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-revision 1.1133 by jmc,
Fri Jun 26 16:19:12 2009 UTC
+revision 1.2342 by jmc,
Wed Jul 26 21:24:31 2017 UTC
 Line 4 
 $Name$
      Notes on tags used in MITgcmUV
      ==============================
+ o eesupp/src:
+   - add argument "procId" to S/R EESET_PARMS to fix  scratchFile1 & 2 setting
+     (case TARGET_BGL or TARGET_CRAYXT) for early call (from eeboot_minimal.F):
+     called with myProcId in eeboot.F and with mpiMyWId in eeboot_minimal.F
+ o pkg/streamice:
+   - remove blank between _EXCH_XY_RL and "()", which my Apple Xcode
+     preprocessor /usr/bin/cpp cannot interpret; 3 instances in total in
+     streamice_driving_stress_fd.F and streamice_advect_2dtracer.F
+ o pkg/diagnostics:
+   - new option to allow to cumulate thickness-factor (hFac) weighted field
+     (if field permitted); implemented by changing sign of "jdiag" pointer
+     (> 0: cumlulate field, < 0: cumulate hFac weighted field).
+     a) restricted to 3-d (Nr levels), level centered diagnostics at U,V or Cell
+        center position (gcode(2)='U','V','M' & gcode(3,5,9:10)='R',' ','MR')
+     b) for now, activated by setting fileFlags 3rd character to 'h'.
+ checkpoint66i (2017/07/18)
+ o pkg/cheapaml:
+   - add parameter "useRelativeWind", default set to False; this change the
+     previous setting which was always using relative wind.
+ o add hooks for the Parallel Data Assimilation Framework PDAF
+     (http://pdaf.awi.de/) in eeboot_minimal.F and the_main_loop.F;
+     to use set CPP-flag USE_PDAF in CPP_EEOPTIONS.h
+ o pkg/exf:
+   - interpolation of vector fields (exf_interp_uv.F): fix bug in calculation
+     of South-Pole mean value.
+   - interpolation near the poles, case where second additional row is at the
+     pole (or beyond the pole and moved to the pole): change first addition row
+     value to a linear interpolation between pole and 1rst (S.pole)/last (N.pole)
+     row (instead of just a copy of it).
+ o pkg/seaice:
+   - prevent JFNK and KRYLOV solvers from trying to reduce a residual of 0
+   - add the option to compute no-slip du/dy, dv/dx (i.e.
+     the offdiagonal strain rate e12) by a second order approximation
+     on the boundary; works only with JFNK, KRYLOV, or EVP solvers, because
+     it is too messy to implement for the implicit LSR matrix.
+     SEAICE_2ndOrderBC = .FALSE. by default
+ checkpoint66h (2017/06/02)
+ o pkg/seaice:
+   - add new routines to compute stress tensor components and stress tensor
+     divergence to be reused in s/r seaice_lsr and s/r seaice_calc_lhs
+   - change names of diagnostics SIsigI/II (commonly used for invariants)
+     to SIsig1/sig2 (more common for principal components) to avoid confusion
+ o pkf/exf:
+   - add a stop if useRelativeWind with un-updated uwind/vwind (e.g., constant);
+     similarly, stop if rotateStressOnAgrid with constant wind-stress.
+ o pkg/seaice:
+   - remove (comment out) diagnostics SIuwind,SIvwind,SIfu,SIfv (duplicate of
+     EXFuwind,EXFvwind,oceTAUX,oceTAUY) and point them to their equivalent.
+   - add diagnostics of wind-stress over seaice (SItaux,SItauy) and seaice
+     fraction weighted wind stress over ocean+seaice (SIatmTx,SIatmTy).
+ o pkg/diagnostics:
+   - small piece of code to rename (old) diagnostics, when namelist is processed.
+ o model/src:
+   - new run-time param (useMin4hFacEdges) to select method for setting hFacW,S:
+     originally, set as minimum of adjacent hFacC factor ; now (new default)
+     computed from rSurfW,S and rLowW,S by applying same rules as for hFacC.
+     Only matters when useShelfIce=T with particular ice-shelf cavity geometry.
+ o pkg/seaice:
+   - add momemtum advection, off by default, still in test phase
+     most of the momentum advection code is adapted and reused from mom_vecinv
+ o pkg/mom_vecinv:
+   - pass these runtime flags:
+     selectVortScheme, highOrderVorticity, upwindVorticity, useJamartMomAdv
+     as formal parameters to s/r mom_vi_u/v_coriolis, mom_vi_u/v_coriolis_c4,
+     so that these routines can also be used in pkg/seaice.
+ checkpoint66g (2017/04/24)
+ o model/src:
+   - more robust ordering of column thickness integral (=Sum_k(drF*hFac) )
+     to get same expression (regarding machine truncation) in different places
+     in ini_masks_etc.F (e.g., rSurfC,W,S is now exactly zero when it should).
+     Update forward output of experiments: global_ocean.cs32x15 (all 5 except
+     viscA4), isomip (x3), tutorial_global_oce_in_p & tutorial_plume_on_slope.
+ o pkg/shelfice:
+   - ALLOW_SHIFWFLX_CONTROL: move setting of maskSHI from shelfice_update_masks.F
+     to shelfice_init_fixed.F
+   - change S/R SHELFICE_UPDATE_MASKS to SHELFICE_INIT_DEPTHS (still called from
+     ini_masks_etc.F for now) to update ocean upper boundary position according
+     to ice-shelf topography (instead of directly updating hFacC).
+ o model/src:
+   - move call to CTRL_INIT & CTRL_ADMTLM from the middle to the bottom of
+     packages_init_fixed.F to allow other pkgs to set mask and weight fields.
+ checkpoint66f (2017/04/06)
+ o model/src:
+   - add specific run-time param to select level of printed plot-field-maps,
+     set by default to debugLevel. Remove internal param "printDomain".
+ o pkg/seaice:
+   - add flag to add snow mass to seaiceMassC/U/V, the default is
+     SEAICEaddSnowMass=.FALSE., not to change previous results
+ o pkg/bling
+   - Bug fix in bling_production regarding unit conversion for diagnostics
+     being put in the wrong place
+ o model/src:
+   - add back recomputation of rSurfW & S to ensure consistent column thickness
+     (needed for rStar) between Sum_k(hFac*drF) and rSurf-rLow, for now only
+     when using pkg/shelfice; was initially added on 2012/06/01 (ini_masks_etc.F
+     revision 1.51) but was removed accidentally on 2014/02/08 (v1.53).
+ o pkg/autodiff:
+   - clean-up "checkpoint.flow"
+ o pkg/rw (Contribution from Jody Klymak):
+     option to set mds file suffix as function of time in simulation:
+     *) new input parameter "rwSuffixType" (read from PARM03 namelist)
+        to select file suffix format; by default (=0), use iteration number;
+     *) add simple routine to return file suffix according to rwSuffixType;
+     *) in model/src and in most pkgs (except: atm2d, fizhi, regrid & streamice),
+        use new S/R to get file suffix, except for debug output file (diagFreq)
+        and pkgs offline & rbcs input files.
+ o pkg/rw:
+   - uniform processing of "I10" suffix across writing fld routines; used to
+     simplify debug writing of cg2/3d_b/x in solve_for_pressure.F & post_cg3d.F
+     (similar to cg3d.F, cg3d_ex0.F)
+ o pkg/mom_vecinv:
+   - highOrderVorticity in selectVortScheme=2 case: fix c4 coeff in splitted
+     vorticity flux (keep same sum in case vBarXm=vBaXp, uBarYm=uBarYp).
+ o pkg/bling:
+   - Many small changes intended to clean the code.
+     Unnecessary ADJOINT_SAFEs removed ;
+     removed BLING_COST.h BLING_CTRL.h bling_cost.F ;
+     diagnostics added.
+ checkpoint66e (2017/03/14)
+ o pkg/exf:
+   - interpolation with #undef EXF_INTERP_USE_DYNALLOC: move buffer size
+     definition outside EXF_PARAM.h in new header file: EXF_INTERP_SIZE.h;
+     use fixed size buffer (passed to S/R EXF_INTERP & EXF_INTERP_UV) to
+     avoid any dynamic allocation ;
+   - S/R EXF_CHECK: add new check & stop when file-name is defined but not
+     read-in ; add warning when file is read-in but not used within pkg/exf ;
+     + check for buffer-size (if #undef EXF_INTERP_USE_DYNALLOC).
+   - update exf_summary.F (print {FLD}RepCycle).
+ o verification/global_with_exf:
+   - switch on exf interpolation in AD test (just like the forward test)
+ o pkg/mom_vecinv:
+   - add storage directives to avoid recomputations within mom_vecinv.F
+     which were generating seg. fault with gfortran -devel
+ o pkg/ctrl, pkg/smooth:
+   - initialize array halos which were generating seg. fault with
+     gfortran -devel in adjoint mode
+ o pkg/exf:
+   - for each input field, enable to specify a field specific repeat-cycle
+     ({FLD}RepCycle) which defaults to pkg/exf main "repeatPeriod".
+ o verification/lab_sea:
+   - update AD results of primary test and noseaicedyn test after switching
+     to new version of TAF (5.3.13 vs 5.3.2 before); agreement with gradient
+     check stays about the same.
+ o pkg/exf:
+   - fix bug in exf_zenithangle.F for cases select_ZenAlbedo > 0 with useCAL=T.
+   - exf_check: MAX_LAT_INC need only be "loc_nlat-1", not equal to loc_nlat
+ o pkg/bling, USE_EXFCO2 code:
+   - add parameter "apco2RepCycle" (set to pkg/exf "repeatPeriod" by default);
+   - update calls to EXF S/R (use new version: EXF_INIT_FLD & EXF_SET_FLD).
+ o pkg/exf:
+   - rename S/R EXF_INIT to EXF_INIT_VARIA ;
+   - add arguments: fldName (for debug msg) and fldRepeatCycle (set to
+     repeatPeriod) to S/R EXF_SET_UV and to S/R EXF_SET_GEN (renamed EXF_SET_FLD)
+     and update calls in pkg/exf calling S/R (exf_getffields.F & exf_getclim.F) ;
+   - add argument: fldName (for debug msg) to S/R EXF_INIT_GEN (renamed
+     EXF_INIT_FLD) and update calls in exf_init_varia.F
+   - For now, for backward compatibility, keep a simplified version of S/Rs
+     EXF_SET_GEN & EXF_INIT_GEN in file exf_set_gen.F
+   - add and pass new arguments: fldName (for debug msg) and fldRepeatCycle
+     to S/R EXF_GetFFieldRec ; update calls in pkg/obcs/obcs_exf_load.F
+ o tools/genmake2:
+   - replace "bc -l" (only used once) by "expr" (already used).
+ o verification/global_ocean.cs32x15:
+   - turn off pkg/cal (useCAL=F) in secondary FWD exp. "icedyn".
+     Note: exf setting (data.exf) can be compared to other exf secondary exp
+     "seaice" (kept with useCAL=T) which has same time dependent forcing.
+ checkpoint66d (2017/02/13)
+ o pkg/exf:
+   - remove setting of useCAL=T when using pkg/exf (useEXF=T); add warning
+     early on (in packages_boot.F) to stress this change in pkg setting.
+   - In (most) verification exp. that use pkg/exf, add useCAL=.TRUE. to data.pkg
+ o model/src:
+   - move call to ecco_phys to end of time step; this may induce minor
+     cost function changes by shifting time averages by one time step
+     for some variables; this revision resulted in changed adjoint results
+     in MITgcm_contrib/verification_other/global_oce_cs32
+ o pkg/exf:
+   - Change EXF_READ_EVAP to only activate code within #ifdef ALLOW_ATM_TEMP ;
+     this prevents to read evap when ALLOW_ATM_TEMP is undef and other fields,
+     e.g. precip, are not available.
+ o pkg/flt:
+   - flt_init_varia.F: use pickupSuff if specified
+   - add code (within #ifdef DEVEL_FLT_EXCH2) and test case as a first,
+     intermediate, step towards completing pkg/exch2 support within pkg/flt;
+     ifdef DEVEL_FLT_EXCH2 then:
+     - flt_init_fixed.F: comment out stop
+     - flt_exch2.F: conserve ipart, jpart (grid coordinates)
+     - exch2_recv_get_vec.F: transform ipart, jpart (grid coordinates)
+     - flt_mapping.F: attempt to fix longitude diagnostic near date-line
+     - flt_init_varia.F: hack initialization (for testing purposes w. LLC90)
+ o tools/genmake2 & pkg/pkg_depend:
+   - define new type of pkg dependency rule ("=pkg_x"), less strict than
+     the "+" rule, that add the dependent pkg (pkg_x) unless it's disabled
+     (-pkg_x in packages.conf).
+   - change pkg/exf dependency rule from "exf +cal" to "exf =cal";
+   - add "+cal" to dependency list of pkg/ecco (needed to compile).
+   - simplify FWD experiment "offline_exf_seaice" by removing pkg/cal.
+ o utils/matlab:
+   - adding ocean_basin routines for defining basin masks.
+ o pkg/exf:
+   - new S/R EXF_GETFFIELD_START replacing EXF_GETFIELD_START, but with more
+     arguments, allowing to check (and stop) if parameter setting of
+      {FLD}startdate1 & date2 and of {FLD}StartTime are consistent with
+     useCAL= T or F. For now, kept a simplified version of EXF_GETFIELD_START
+     for backward compatibility.
+   - change accordingly calls in exf_init_fixed.F + default {FLD}StartTime in
+     exf_readparms.F ; apply same changes to pkg/icefront (for SGRunOff field).
+ o pkg/bling (USE_EXFCO2 code):
+   - fix missing setting of apco2StartTime according to apco2startdate1 & date2
+     by adding a call to S/R EXF_GETFFIELD_START.
+ o pkg/exf:
+   - allows to compile without pkg/cal (but disabled by current dependency
+     rules, i.e., default "pkg/pkg_depend"). Minimal changes to enable to
+     run with useCAL=F ; this involves setting directly {FLD}StartTime instead
+     of {FLD}startdate1 & date2 ; consistency check not yet coded.
+ o verification/global_ocean.cs32x15:
+   - fix all data.exf for a shift of 1 day in all field startdate1 so that it now
+     corresponds to middle of 1rst month; update outputs (2 fwd + 3 adm + 3 tlm).
+ o pkg/exf:
+   - allow to use EXF_ZENITHANGLE without pkg/cal + simplify (saving some
+     calculations); change FWD experiment global_ocean.cs32x15
+     (#define ALLOW_ZENITHANGLE) to test/check that this code compiles.
+ o pkg/exf:
+   - In preparation for addition to NAMELIST, rename internal (_RL) parameter
+      {FIELD}startdate to {FIELD}StartTime
+     Note: new name also fit better the content, i.e, a start time in second.
+ o eesupp/src:
+   - add 1 argument to S/R EEBOOT & EEBOOT_MINIMAL for interface with ESMF
+ o pkg/exf:
+   - add option ALLOW_READ_TURBFLUXES (and corresponding set of parameters)
+     to allow to read-in Sensible & Latent Heat flux ;
+   - simplify pkg/exf main options:
+) move small piece of code (case ALLOW_ATM_TEMP undef) out of
+        exf_bulkformulae.F into exf_wind.F so that exf_bulkformulae.F is
+        compiled only when both ALLOW_ATM_TEMP & ALLOW_BULKFORMULAE are defined;
+) make call to EXF_RADIATION and to EXF_WIND independent of CPP option
+        ALLOW_BULKFORMULAE which now only applies to S/R EXF_BULKFORMULAE ;
+) improve options documentation in EXF_OPTIONS.h.
+ o pkg/ecco:
+   - cost_gencost_customize.F,ecco.h,ecco_phys.F,ecco_readparms.F, and
+     ecco_summary.F: add passive tracer cost functions to gencost;
+     m_ptracer and m_boxmean_ptracer
+ o pkg/ctrl:
+   - ctrl_map_forcing.F: pass myIter and myTime to ctrl_map_forcing as input
+     parameters; move myIter .EQ. nIter0 inside ctrl_map_forcing; add to list
+     of implemented gentim2d contol parameters: xx_qnet, xx_empmr, xx_qsw,
+     xx_sst, xx_sss, xx_pload, xx_saltflux, xx_fu, xx_fv, xx_fe, xx_fn
+ o model/src:
+   - forward_step.F: pass myIter and myTime to ctrl_map_forcing as input
+     parameters; move myIter .EQ. nIter0 inside ctrl_map_forcing
+ o pkg/exf:
+   - exf_getffields.F: add to list of implemented gentim2d contol parameters:
+     xx_lwflux, xx_swflux, xx_evap, xx_apressure, xx_areamask
+ checkpoint66c (2017/01/19)
+ o verification:
+   - add new option "-src" to testreport to only produce source code (*.f),
+     including taf output src code (if using '-adm'/'-tlm' option).
+ o pkg/exf:
+   - add saltflx :: Net upward salt flux in psu.kg/m^2/s
+ o pkg/diagnostics:
+   - add run-time variable diagMdsDir to specify a subdirectory for
+     diagnostic output when mds is being used and mdsioLocalDir is not.
+ o pkg/mnc:
+   - mnc_utils.F: edit stop message
+ o pkg/autodiff:
+   - autodiff_ini_model_io.F: PRINT_MESSAGE, clean-up comments, add _*_MASTER,
+     add HAVE_SYSTEM bracket around system call to mkdir
+ o pkg/profiles:
+   - profiles_findunit.F, profiles_init_fixed.F, profiles_interp.F,
+     profiles_readparms.F: call ALL_PROC_DIE before 'stop'
+   - profiles_ini_io.F: use PRINT_MESSAGE, clean-up comments, add _*_MASTER,
+     add HAVE_SYSTEM bracket around system call to mkdir
+ o pkg/smooth:
+   - smooth_filtervar2d.F, smooth_filtervar3d.F: call ALL_PROC_DIE before 'stop'
+   - smooth_init2d.F, smooth_init3d.F: move print statements to readparms
+   - smooth_readparms.F: add cleaner print statements from smooth_init?d.F
+ o pkg/exf:
+   - check: count errors and stop cleanly at the end (call to ALL_PROC_DIE);
+     issue error message when climsst_interpMethod.GT.0 and climsst_lon_inc > 500
+     generalize tests on interpMethod, nlat, and lon_inc to all exf variables.
+   - summary: skip detailed field report if not used (empty file-name).
+ o tools/xmakedepend:
+   - In case line editor "ed" is missing, switch to "sed" command to clean-up
+     Makefile from previous dependencies (anything after "# DO NOT DELETE" line).
+ o pkg/exf:
+   - change definition of "hflux" input file to always include Short-Wave;
+     this is now consistent with hflux computation (if using bulk-formulae)
+     and hflux diagnostic & documentation (in EXF_FIELDS.h).
+ checkpoint66b (2016/12/01)
+ o model & momentum pkgs:
+   - implement fully implicit bottom friction combined with implicit surf.
+     pressure, for now, only in hydrostic formulation:
+     + to use: compile with #define ALLOW_SOLVE4_PS_AND_DRAG in CPP_OPTIONS.h
+       and run with selectImplicitDrag=2 ;
+     + currently missing diagnostics of bottom drag and vert. viscosity tendency;
+   - partial implicit time-stepping (bot. friction + vert. visc first, then
+     surf. press) corresponding to selectImplicitDrag=1 should be applicable
+     to NH formulation but not available until we solve for surf. pressure
+     increment (instead of full etaN).
+   - change exp. global_ocean.cs32x15.thsice to test implicit bottom drag
+     with implicit vertical viscosity.
+ o pkg/seaice: add linear remapping scheme (Lipscomb 2001) to ITD model
+   - this is a first version that includes many regularisations that may
+     not all be necessary, to be sorted out,
+   - turned on by runtime parameter SEAICEuseLinRemapITD (true by default)
+   - change one verification experiment in seaice_itd to use and test new code
+   - seaice_growth: catch a case where the argument of log can be zero
+     or smaller (important for code stability)
+ o model/src:
+   - modify SOLVE_DIAGONAL_LOWMEMORY version of solve_tridiagonal.F
+     & solve_pentadiagonal.F to enable to re-used inverse matrix for solving
+     similar A.X'=Y' system (with same matrix A) in subsequent calls;
+     switch based on errCode (In/Out) argument value; in calling routines,
+     initialise errCode before first call.
+ checkpoint66a (2016/10/18)
+ o pkg/bling:
+   - BLING package now loads in atmospheric pCO2 file using exf package routines
+     Enable with #define USE_EXFCO2 in BLING_OPTIONS.h
+ o model/src & pkg/ptracers:
+   - with INCLUDE_IMPLVERTADV_CODE defined, also call MOM_U,V_IMPLICIT_R &
+     GAD_IMPLICIT_R (instead of IMPLDIFF) when just implicitViscosity and
+     implicitDiffusion (respectively) are used (even without momImplVertAdv
+     or temp,salt,PTRACERS_ImplVertAdv).
+ o model/src & generic_advdiff:
+   - add parenthesis in main diagonal calculation of implicit vertical
+     diffusion matrix (impldiff.F & gad_implicit_r.F).
+     This affects results at machine truncation level; update output of many
+     verification experiments (31 fwd ; 10 adm ; 8 tlm ; 3 oad).
+ o pkg/mom_commom & generic_advdiff:
+   - add deep atmosphere and anelastic scaling factor in implicit vertical
+     advection routines (mom_u,v_implicit_r.F & gad*_impl*_r.F).
+ o model/src:
+   - remove few unnecessary temp array copies in solve_tridiagonal.F
+     & solve_pentadiagonal.F
+ checkpoint65z (2016/09/28)
+ o pkg/seaice: fix multithreading for seaice_fgmres.F
+   - remove unecessary variables from common blocks
+   - use extra dimension MAX_NO_THREADS for all variables of the Krylov space
+     basis, that are stored in commom blocks (including integer variable i1)
+   - clean up code a little by removing commented lines that refer to
+     original code
+   - turn on multi-threaded test for experiment offline_exf_seaice.dyn_jfnk.
+ o MITgcm manual:
+   - add uptodate pkg/ecco documentation to the manual (section 8.1; ecco.tex),
+     preliminary documentation for generic controls (8.3; ctrl.tex),
+     a placeholder for smooth (8.4; smooth.tex), and comment out the deprecated
+     ecco_costfunction.tex
+ o pkg/ecco:
+   - update and cleanup list of CCP options
+   - re-assign gencost_mask to specify masks rather than gencost_errfile; 'c'
+     is now always passed to cost_generic; gencost_mask is now MAX_LEN_FNAM
+   - add checks that retired run-time options are not used, and in relation
+     to gencost_mask and gencost_errfile
+   - finish deprecating gencost_scalefile, gencost_smooth2Ddiffnbt, and
+     gencost_nrecperiod
+   - fix m_eta computation for virtual salt flux case
+   - add m_horflux_vol case (selected via gencost_barfile) that computes
+     transports via cost_gencost_boxmean (gencost_flag=-3)
+   - use gencost_flag more systematically (i.e., avoid using gencost_name)
+     for code switches (aside from physical variable selection)
+ o pkg/seaice: make seaice_fgmres.F fit for multithreading; this first
+   attempt appears to be a bit of a hack and my need some repair down the road
+ o pkg/exf:
+   - interpolation near South Pole: fix criteria on input field latitude.
+ o pkg/icefront & pkg/exf:
+   - move setting of icefront Sub-Glacial RunOff forcing (currently unused)
+     from pkg/exf (read from data.exf) to pkg/icefront (read from data.icefront)
+ o pkg/exf:
+   - replace CPP option ALLOW_EXF_OUTPUT_INTERP with run-time parameter
+     "exf_output_interp" (in namelist: EXF_NML_04); change output file name
+     (add suffix "_out" instead of a prefix); keep same record number as in
+     input file but always write record 1 first (to avoid a STOP in I/O S/R).
+     Change output file content by writing interpolated field before applying
+     land-sea mask (helpful for debug).
+   - 2 compon. vector interpolation with rotation: apply scaling factor on
+     each compon. (Eastward and Northward) just before rotation.
+ o pkg/bling:
+   - Cleaned package. Removed not needed code and comments.
+   - adjoint example now works
+     (MITgcm_contrib/verification_other/global_oce_biogeo_bling/code_ad)
+ o pkg/ptracers:
+   - add Bruno Deremble's code to complete the linear surface correction
+     for tracer conservation;
+   - enabled for individual ptracers by PTRACERS_linFSConserve(iTr)=.TRUE.
+ checkpoint65y (2016/07/29)
+ o pkg/debug (stats):
+   - change GLOBAL_SUM to GLOBAL_SUM_TILE (result independent of tile to
+     proc/thread mapping);
+   - fix Min & Max for case where 1 thread has only empty tiles;
+   - use RL variable to count number of wet grid points (with big domain,
+     can be too large to fit into integer*4).
+ o pkg/monitor:
+   - use RL variable to count number of wet grid points (but used only for del2)
+   - add new routine to compute Advective CFL within tracer time-stepping with
+     writing delayed until next monitor output.
+ o pkg/obcs:
+   - fix bug in OBCS_BALANCE_FLOW (OBCS_balanceFacN misspelled OBCS_balanceFacW)
+ o pkg/cal:
+   - calandar-dump: treat case myTime < timePhase in the same way as in
+     eesupp/src/diff_phase_multiple.F (when not using calandar-dump).
+ o pkg/dic & seaice:
+   - fix compilation of ocean component for coupled atm+ocn model with
+     seaice dynamics & dic.
+ checkpoint65x (2016/06/11)
+ o add a license text file in main MITgcm tree.
+ o added pkg/bling:
+   - intermediate complexity biogeochemical model
+   - see bling_description.txt for details
+   - verification experiment is global_oce_biogeo_bling (for now, in
+     Contrib/verification_other/); tested daily on baudelaire with gfortran.
+   - add entry point in pkg/gchem for new pkg "bling".
+ o pkg/seaice: fix tensile stength computation
+   - replace global field tensileStrength by tensileStrFac
+   - tensileStrFac can be computed once in S/R seaice_init_varia
+   - fortunately that does not affect any verification results
+ checkpoint65w (2016/05/12)
+ o pkg/ctrl/ctrl.h: fix a comma in common block list, so that code compiles
+      with ECCO_CTRL_DEPRECATED defined
+ o verification/global_ocean.cs32x15:
+   - change secondary test "viscA4" to also test "selectP_inEOS_Zc=3"
+     with "selectNHfreeSurf=1".
+ o model/src (non-hydrostatic free-surface):
+   - More "natural" expression of NH free-surface term (case selectNHfreeSurf=1):
+     was: tmpSurf/(1+tmpSurf); changed to: 1/(1+Gamma) with Gamma=1/tmpSurf.
+   - Calculate surface vertical velocity after 2-D solver adjustment (accounts
+     for EmPmR if RealFreshWaterFlux); used in RHS (cg3d_b) if exactConserv
+     and used to compute dPhiNH (in post_cg3d.F) if selectNHfreeSurf=1.
+     This fixes EmPmR contribution when selectNHfreeSurf=1 & RealFreshWaterFlux.
+   - Update output (changes at machine truncation level) of verification exp:
+     exp4 (11 digits for cg2d), global_ocean.cs32x15.viscA4 (11.d),
+     short_surf_wave (13.d) and tutorial_deep_convection.smag3d (12.d).
+ o pkg/seaice: ITD code
+   - fix picking up from a single category model by initialising
+     heff/area/hsnowITD = 0. in seaice_itd_pickup.F
+   - split a long warning message in seaice_check_pickup.F into two lines,
+     because NEC SX-ACE cannot deal with the long line.
+ o model/src:
+   - fix missing dPhiNH in pressure_for_eos.F (case: selectP_inEOS_Zc=3)
+ o pkg/seaice:
+   - add missing checks for SEAICE_ALLOW_KRYLOV and SEAICE_ALLOW_BOTTOMDRAG
+ o pkg/seaice:
+   - add basal stress as parameterisation for grounding ice
+     following Lemieux et al. (2015)
+   - turn on by setting new parameter SEAICEbasalDragK2 to a value
+     larger than 0. Lemieux et al. (2015) recommend 15.
+   - The adjoint complains with extra recomputations so there is also a
+     new cpp-flag SEAICE_ALLOW_BOTTOMDRAG that is undefined by default in
+     order to postpone the problem
+   - compile the new code in lab_sea
+ o verification/halfpipe_streamice:
+   - update both TAF and OpenAD adm output (machine truncation differences)
+ checkpoint65v (2016/04/08)
+ o verification/advect_xz:
+   - increase overlap size from 3 to 4 and add new secondary test for PQM
+     advection scheme (with mono & wino limiter).
+   - change main exp. to test PPM (with weno limiter) adv.scheme on Temp.
+ o model/src:
+   - new parameters "top_Pres" & "seaLev_Z" (replacing Ro_SeaLevel and recently
+     added phi0Ref) to set vertical axis origin and phiRef origin;
+     keep Ro_SeaLevel for backward compatibility (with a warning).
+    According to coordinate and fluid type:
+     OCN in Z: top_Pres(Ref) (=rhoConst*PhiRef(1)), seaLev_Z (=rF(1), @ the top)
+     ATM in Z: top_Pres(Ref) (=rhoConst*PhiRef(1)), seaLev_Z (=rF(Nr+1) @ bottom)
+     OCN in P: top_Pres (=rF(Nr+1)), seaLev_Z (= PhiRef(Nr+1)/g, @ the top)
+     ATM in P: top_Pres (=rF(Nr+1)), seaLev_Z (= PhiRef(1)/g, @ the bottom)
+   - remove Ro_SeaLevel from ATM experiment parameter files;
+   - in tutorial_global_oce_in_p, remove Ro_SeaLevel and set top_Pres to the
+     complement; update output.txt (changes at machine truncation level).
+ o pkg/seaice/seaice_evp.F
+   - simplify computation of deltaZ and zetaZ to simple averaging following
+     Bouillon et al. (2013). This removes a lot of code, but also changes
+     verification experiment lab_sea.hb87 -> updated
+ checkpoint65u (2016/03/14)
+ o pkg/generic_advdiff:
+   - from Darren: add PPM and PQM advection schemes (number 40-42 and 50-52)
+     with 2 types of limiter (see: Engwirda & Kelley, submit. to JCP);
+     Note (from Darren): unlimited PPM/PQM scheme (40 & 50) are just for
+     testing and not for actual use.
+ o model/src:
+   - add parameter "phi0Ref" to specify reference [pressure/geo] potential at
+     origin r = rF(1);
+   - add options (parameter selectP_inEOS_Zc) to select which pressure to use
+     in EOS for height coordinate: enable to include NH Pressure or to use
+     more accurate pressure vertical profile; options not linked to EOS type
+     (as previously, e.g., JMD95P/JMD95Z) but set default according to EOS type;
+   - start to implement variable gravity (along vertical): for now, only with
+     z-coords (not even z*).
+   - add Ideal Gas equation of state for height coordinate.
+   - update OpenAD output (affected at machine truncation level) of exp:
+     global_ocean.90x40x15, OpenAD (std) and tutorial_global_oce_biogeo.
+ o pkg/exf:
+   - add ALLOW_EXF_OUTPUT_INTERP cpp switch to output the result
+     of exf interpolation (before any rescaling, rotation or interpolation
+     to velocity point) for each field that gets loaded from file. This option
+     identically mimics the input file organization (e.g. record numbers in year
+     by year input files) besides the change in horizontal grid.
+   - add rotateStressOnAgrid run-time switch so that wind stress fields
+     can be provided on the A-grid in zonal/meridional direction and
+     rotated on the fly. This only applies to the case when the exf
+     interpolation is off and rotateStressOnAgrid is false by default.
+ o model/src:
+   - rename internal parameter "useDynP_inEos_Zc" to "storePhiHyd4Phys" (since
+     it's also used with pkg/atm_phys) and add few more parameters (but still
+     inactive, src code yet to come)
+ checkpoint65t (2016/02/10)
+ o pkg/atm_phys:
+   - from Ruth Geen: add optical depth dependence on CO2 concentration.
+ o model/src:
+   - fix vertical inter/extra-polation of density factor rhoFacF (for anelastic)
+     for the case setCenterDr=T (delRc set from "data"); add output of rhoFacC&F.
+     Update output of exp. deep_anelastic (changes at truncation level).
+ o tools:
+   - add a hack in "remove_comments_sed" (used only with TAF) for recent
+     version of OpenMPI (shipped with FC.23): comment out the new header
+     file "mpif-sizeof.h" which causes problems to TAF.
+ o pkg/seaice:
+   - change the termination criterion so that maxits (SEAICElinearIterMax)
+     has an effect
+   - unify iteration parameters for implicit solvers (JFNK and Picard)
+     SEAICEnonLinIterMax replaces SEAICEnewtonIterMax/NPSEUDOTIMESTEPS
+     SEAICElinearIterMax replaces SEAICEkrylovIterMax/SOLV_MAX_ITER
+     SEAICEpreLinIterMax replaces SOLV_MAX_ITER in preconditioner
+     SEAICEpreNL_IterMax replaces NPSEUDOTIMESTEPS in preconditioner
+     SEAICEnonLinTol     replaces JFNKgamma_nonlin
+   - remove S/R SEAICE_FGMRES_DRIVER and put content into S/R SEAICE_JFKN
+   - add new Picard-Krylov solver, compile with SEAICE_ALLOW_KRYLOV and
+     use with SEAICEuseKrylov
+ o pkg/seaice/seaice_lsr.F
+     fix small bug: replace zetaZ by zetaZloc in S/R seaice_lsr_rhsu/v; only
+     relevant if SEAICEuseStrImpCpl=T, and even then it does not seem to have
+     an effect.
+ o pkg/seaice: add two new parameters
+   - SEAICEuseLSR to simplify the logic in seaice_dynsolver (this
+     parameter is not in any namelist)
+   - SEAICEusrPicardAsPrecon to allow s/r seaice_lsr to be used as
+     a preconditioner for the non-linear Newton iteration of the JFNK
+     solver
+ o pkg/seaice/seaice_lsr.F: replace 1./SEAICE_deltaTdyn with recip_deltaT,
+   affects some experiments at truncation level:
+   - global_ocean.cs32x15.icedyn (11 digits),
+   - global_ocean.cs32x15.seaice (11 digits),
+   - seaice_itd (12 digits), seaice_itd.lipscomb07 (12 digits) -> update
+   - also update global_ocean.cs32x15 adjoint and tangent-linear results
+ o pkg/salt_plume & pkg/thsice:
+   - for coupled  set-up with pkg/thsice in ATM and pkg/salt_plume in OCN,
+     connect salt_plume flux to ATM-OCN coupling pkgs interface:
+    a) in ATM: also cumulate salt-plume flux in S/R THSICE_SALT_PLUME (for
+      export to coupler interface) even without compiling pkg/salt_plume ;
+    b) in OCN: apply coupler salt-plume flux to pkg/salt_plume field
+      (saltPlumeFlux) just before exch call, in S/R SALT_PLUME_DO_EXCH.
+ o pkg/dic:
+   - use the updated seaice fraction (from seaice pkgs) for DIC forcing
+     instead of the previous time-step value ; done in new S/R DIC_FIELDS_UPDATE
+     called from the top of dic_biotic_forcing.F (instead of in DIC_FIELDS_LOAD);
+   - move also update with values from ATM-OCN Coupler in the same new S/R
+     (previously done in ocn_apply_import.F).
+ o tools/adjoint_options:
+   - specify explicitly "-f77" or "-f90" in default ad-optfile since TAF (default)
+     has been changed on Jan 14, 2016.
+ o pkg/ggl90:
+   - add alternative discretisation of vertical shear (off by default), to
+     compute the mean (@ grid-cell center) of vertical shear compon instead of
+     vertical shear of mean flow (@ grid-cell center).
+   - add correct parenthesis in ALLOW_GGL90_SMOOTH code to get the same truncated
+     results on adjacent faces of cubed-sphere grids; this fix the restart.
+ o pkg/atm_compon_interf:
+   - skip time-ave over cpl_atmSendFrq of Sea-Level Pressure (atmSLPr) and just
+     pass last value, stored directly before export to CPL ;
+     Note: this affects results of Coupled set-up where OCN uses useImportSLP=T
+   - remove atmSLPr from pickup files (no longer needed for restart)
+ checkpoint65s (2016/01/13)
+ o eesupp & genmake2:
+    - first check for Function ETIME and, if it fails, then check for subroutine
+      ETIME and consistent output; use the appropriate version in timers.F
+ o model/src:
+   - to check restart test, add option to apply EXCH to U,V earlier, just before
+     integr_continuity; turned off by default.
+ o pkg/dic:
+   - remove CPP option USE_ATMOSCO2 (not needed)
+ o tools/tst_2+2:
+   - try to ignore difference between +0 and -0 in binary file, causing test
+     to fail for no good reason.
+ o eesupp & genmake2:
+   - put back modif from Jinxuan Zhu - change etime fct call to S/R call -
+     but also check (in genmake2) that test runs and returns meaningful results.
+ o coupler pkgs:
+   Finish implementation of optionally-exchanged variable switches (started on
+    Nov 12) with addition of few more exchanged fields, including 2-way exchange
+    of pkg/thsice vars to allow to use seaice dynamics (from pkg/seaice) & seaice
+    advection in OCN component; this requires sequential coupling.
+   coupler (pkg/atm_ocn_coupler):
+   - add argument msgUnit and iter number to CPL_SEND/RECV_ATM/OCN_FIELDS
+     routines (useful for debug).
+   - only export/import optionally exchanged fields (RunOff, seaice, Salt-Plume
+      flux, DIC fields) if corresponding switch is ON.
+   - add option to export RunOff to OCN (to use for DIC river input)
+   - add 2-way thSIce vars exchange; check for consistent cpl_sequential setting.
+   components (pkg/atm_ & ocn_compon_interf):
+   - to save memory space in ATM & OCN comp: add some #ifdef ALLOW_${PKG} around
+     optionally exchanged fields; add a check & stop in cpl_readparms.F.
+     ATMCPL.h: ALLOW_LAND for RunOff, ALLOW_THSICE for seaice, ALLOW_AIM for CO2;
+     OCNCPL.h: ALLOW_SALT_PLUME, ALLOW_DIC for DIC, ALLOW_THSICE for 2-W thsice.
+   - rename:   fracIce     -> sIceFrac_cpl (<- match coupler var name)
+     + in ATM: fracIceTime -> sIceFracTime ; seaIceTime -> sIceMassTime.
+   - add 2-way thSIce vars exchange ; add Salt-Plume flux ; add RunOff in OCN.
+   - hold in common block coupler optionally-exchanged variable switch
+     and set default "useImportXXX" accordingly; + check & stop if inconsistent.
+   - add diagnostics for all imported fields from coupler (in both OCN & ATM);
+     this is intended to replace the OCN cplFldtave.* output files (not updated
+     to contain new additional exchanged fields).
+ o pkg/dic:
+   - fix an other bug (also from 2014/08/30) in dic_atmos.F, in dic_int1=3 code.
+ o pkg/thsice:
+   - when coupled to ATM (useCoupler) with thSIce_skipThermo=T, skip reading
+     and writing of thsice pickup files.
+ o pkg/atm_compon_interf:
+   - move all field individual export-call out of cpl_export_import_data.F
+     into new S/R ATM_EXPORT_FIELDS
+ o pkg/atm_compon_interf:
+   - store state variables (for now, only thSIce fields) just before beeing
+     exported (in cpl_export_import_data.F, like on ocean side) instead of from
+     atm_store_my_data.F like all exported fluxes.
+   - new version of pickup_cpl: write field names into meta file and read meta
+     file to find field postion in pickup. Also only write/read fields meeded for
+     restart (same logic as main pickup file ; also using pickupStrictlyMatch)
+ o pkg/dic:
+   - fix bug (added on 2014/08/30) in dic_atmos.F for the case dic_int1= 2 or 3.
+ o pkg/seaice: add new parameter SEAICEpressReplFac to choose between
+     pressure replacement method (=1., default) or original Hibler (1979) (=0.)
+     value can be from domain [0,1] to average between the two methods
+ o pkg/atm_phys:
+   - allow to provide 2-d map of albedo and mixed-layer depth from files (but
+     hold fixed in time).
+ checkpoint65r (2015/12/21)
+ o pkg/seaice:
+     fix bug in tridiagonal solvers for SEAICE_OLx/y>0, this affects the JFNK
+     solver (offline.dyn_jfnk) and global_ocean.cs32x15.seaice -> updated
+ o pkg/seaice:
+   - fix a bug in computing areaS in (J-J -> J-1) that affects runs
+     when SEAICEscaleSurfStress=.TRUE.,
+   - apply areaW and areaS in S/R seaice_calc_lhs
+ o pkg/atm_phys:
+   - add diagnostics for 3-D, Nr+1 levels diagnostics of radiative fluxes
+     (shortwave & longwave, net & downward) and diagnostics of temp. tendency
+     for individual contribution (convection, LSC cond, radiation)
+   - add Ruth Geen etal, GRL 2016, radiation options (see paper supp.
+     information); activated with: solar_exponent=0. and wv_exponent=-1.
+ o pkg/ggl90:
+   - within IDEMIX add upper limit for horizontal group velocity to
+     avoid instability problems in the explicit horizontal diffusion term for
+     long time steps or high resolution
+ o pkg/diagnostics:
+   - simplify setting of local-array size in diagstats_output.F: uses "numLevels"
+     (from DIAGNOSTICS_SIZE.h) to allow to write out more than Nr levels.
+ o testreport:
+   - remove "-v" (verbose option) in default mpirun command.
+ o pkg/seaice/seaice_growth:
+   - catch potential division by zero in ITD code, does not change
+     verification results
+ o pkg/ecco:
+   - retire old codes to the Attic. The calls to retired functions are
+     left in a commented form in case they ever need to be re-activated.
+   - ecco_check.F: issue warning if any old CPP option is
+     defined that corresponds to retired codes -- then stop.
+ o pkg/atm_compon_interf:
+   - change seaice fraction (use for OCN dic surf.flux) stored and sent to
+     coupler: use last time-step value instead of average over cplSendFrq_iter
+     time-step, similar to what is done for seaIceMass.
+     This will affect results (pkg/dic) of coupled ATM-OCN+dic set-up.
+ o eesupp & genmake2:
+   - from Jinxuan Zhu: change etime fct call to S/R call (fix gfortran ETIME);
+     <= remove until a fix is found for some ifort version on ia32 machine.
+ o pkg/seaice/seaice_evp:
+   - refine residual computation
+ checkpoint65q (2015/11/18)
+ o pkg/seaice/seaice_evp:
+   - fix residual computations so that they no longer affect the actual
+     simulation code
+   - fix seaice_readparams to be able to actually set new parameters
+     SEAICEaEVPcStar and SEAICEaEVPalphaMin, also fix logic a little
+ o model/src:
+   - fix wrong truncation (single prec) from "FLOAT" function in expressions
+     like: deltaT*FLOAT(myIter) when myIter is large:
+      a) replaced by DFLOAT (if not seen by TAF);
+      b) remove "FLOAT" and use implicit type conversion (if seen by TAF).
+ o pkg/aim_v23:
+   - write/read the expected CO2 pickups (from S/R AIM_DO_CO2): fix reading
+     when pickupSuff is set ; do write rolling pickups + at the end of the run.
+ o pkg/atm_ocn_coupler + ocn_compon_interf:
+   - in prep for using pkg/seaice Dyn in coupled set-up, implement sequential
+     coupling option-1: ATM -(cpl)-> OCN and then OCN -(cpl)-> ATM ;
+     add corresponding call in DO_OCEANIC_PHYS.
+ o coupler pkgs:
+   Start a new way to set-up optionally-exchanged variables (previously, only
+    there for exchange_DIC): switch on/off from 1 place, at run-time, in coupler
+    data.cpl (new) instead of at compile time in ATMIDS.h & OCNIDS.h ;
+    send switch to ATM & OCN compon before reading their own "data.cpl" (so that
+    compononent param default can be set accordingly).
+   Note: this new switch (cpl_exchange_[xxx]) is not a per variable switch
+    but rather applies to a group a fields (going both ways like for DIC)
+    and corresponds to an option of coupling config.
+   coupler (pkg/atm_ocn_coupler):
+   - change parameter file from "data" to "data.cpl" (in cpl_read_params.F),
+     and read namelist directly (without eessup S/R calls) instead of
+     in the very un-flexible old way, 1 param per line, in fixed order;
+   - add error-counter to track errors (e.g., missing "data.cpl") and to stop
+     cleanly in CPL_CHECK_CPLCONFIG
+   - add new coupling-exchange selectors (some not yet active) including
+     cpl_exchange_DIC (to set to 3 to replace atmCpl_exchange_DIC=T in ATMIDS.h
+                                          and ocnCpl_exchange_DIC=T in OCNIDS.h);
+   - add 2 new S/R (CPL_SEND_ATM/OCN_CPLPARMS) to send coupler-params to each
+     component ; called directly from coupler.F, after comp. registrations;
+   - rename few variable-ID names (in ATMIDS.h & OCNIDS.h):
+      atm/ocnSeaIceName --> atm/ocnSIceMassName ; atm/ocnFCO2Name ->
+       -> atm/ocnCO2FluxName ; atm/ocnWSpdName --> atm/ocnWindSpdName
+   components (pkg/atm_ & ocn_compon_interf):
+   - add ATM/OCN_CPL_OPTIONS.h in component pkgs and include the corresponding
+     CPP header file in all pkg source files.
+   - move checking of comp. configs out of cpl_exch_configs.F into new S/R
+     ATM/OCN_CHECK_CPLCONFIG;
+   - add error-counter to track errors (e.g., in "data.cpl") and to stop
+     cleanly in ATM/OCN_CHECK_CPLCONFIG;
+   - add new S/R CPL_IMPORT_CPLPARMS to import coupling-exchange selectors
+     from coupler ; called from initialise_fixed.F, after PACKAGES_BOOT and
+     before PACKAGES_READPARMS;
+   verification/cpl_aim+ocn/:
+   - update ATMIDS.h & OCNIDS.h (in shared_code) and use new parameter file
+     "data.cpl" for coupler (in input_cpl).
+ o eesupp/inc:
+   - change the MPI-global-sum default (in CPP_EEOPTIONS.h) to:
+     #define GLOBAL_SUM_ORDER_TILES (only affects MPI built of global_sum_tile.F)
+     to always cumulate tile local-sum in the same order (still uses
+     MPI_Allreduce like standard code).
+   - in verification experiment code, remove local CPP_EEOPTIONS.h_mpi files
+     that are now identical to standard version (in eesupp/inc).
+ o pkg/shelfice:
+   - add SHELFICETransCoeffTFile for initializing spatially varying
+     heat and salt transfer coefficients
+ o pkg/atm_compon_interf & ocn_compon_interf:
+   - combine into 1 (new) S/R CPL_EXPORT_IMPORT_DATA the two previous
+     S/R CPL_EXPORT_MY_DATA & CPL_IMPORT_EXTERNAL_DATA
+   - move bi,bj loops inside S/R OCN_STORE_MY_DATA
+ o pkg/atm_ocn_coupler:
+   - initialise to zero ATMVARS.h & OCNVARS.h arrays.
+ o pkg/rbcs:
+   - select RBCS-mask for Temp & Salt the same way as for pTracer ; this allows
+     to compile with maskLEN=1 when all tracers use the same RBCS-mask.
+   - add a short report (to STDOUT) about RBCS-mask settings.
+ checkpoint65p (2015/10/23)
+ o pkg/seaice/seaice_evp.F: fix store directives and key computations, since
+     there is no adjoint test for EVP, we don't know what it does to the adjoint
+     solution, but at least there are no more recomputation warnings left
+ o pkg/seaice/seaice_evp.F: slight modification of averaging so that EVP stands
+     a chance of giving the same results as a fully converged VP (JFNK) solver
+ o tools/adjoint_options/adjoint_diva:
+   - fix bug (typo) in Tang-Linear FLAGS setting for MPI + DIVA
+ o pkg/streamice:
+   - spotted bug in streamice_driving_stress using dyG where should have been dxG
+ o pkg/exf:
+   - remove STOP statement that prevented to use wind or (wind-)stress
+     interpolation for constant-in-time forcing fields (wind/stress period = 0).
+ o pkg/seaice:
+   - replace SEAICE_EVP_USE_ADAPTATION by run time parameters, requires
+additionals 2D fields and 6 new store directives
+   - change logic in seaice_readparms.F: EVP code can now be turned on in
+     various ways, setting SEAICE_deltaTev is no longer required,
+     alternatively set SEAICE_evpAlpha/Beta, SEAICEuseEVPstar, SEAICEuseEVPrev,
+     or SEAICEaEVPcoeff
+ o pkg/shelfice/shelfice_thermodynamics.F
+   - redefining uLoc/vLoc to u/v, instead of 2u/v
+ o pkg/seaice/seaice_evp.F: introduce "adaptive EVP" by Madlen Kimmritz
+   - this is an intermediate state of a truely converging EVP that has
+     the potential of outperforming implicit VP methods, I do not recommend
+     using it yet.
+   - for now, "adaptive EVP" is turned on by setting SEAICE_EVP_USE_ADAPTATION
+     and all parameters are hardwired
+   - for convergence it still requires very smooth regularisations, that means,
+     if SEAICE_DELTA_SMOOTHREG is defined, deltaCreg=deltaC+deltaMin, which is
+     different from the VP case with deltaCreg=sqrt(deltaC**2+deltaMin**2); also
+     specific averaging appears to be required, still subject to tuning
+   - still needs cleaning and I need to turn parameter into runtime parameters
+   - add code to compute and print residuals of iteration, compile with
+     defining ALLOW_SEAICE_EVP_RESIDUAL to enable it
+ o pkg/seaice/seaice_evp.F: fix a bug (factor of four in front of e12Csq)
+   that entered with r1.54 on Sep04, 2015, -> update results
+ checkpoint65o (2015/09/14)
+ o pkg/mom_vecinv & mom_common:
+   - add deep-atmosphere geometry factor in mom_calc_visc.F + in routines
+     called from there.
+   - add anelastic and deep-atmosphere geometry factor in pkg/mom_vecinv ; this
+     allows to use Vector-Invariant form in deep atmos and anelastic formulation
+ o pkg/seaice: introduce fast ice parameterisation following Itkin et al. (2015)
+   and Koenig-Beatty+Holland (2012)
+   - two new parameters SEAICE_tensilFac and SEAICE_tensilDepth
+   - global 2D field tensileStrength, computed in seaice_calc_ice_strength
+   - requires an extra input argument for S/R seaice_calc_viscosities
+   - tensileStrength's depth dependence is different from Itkin et al. (2015)
+     (to be changed and played with, for now exponential)
+ o pkg/seaice: introduce new parameter SEAICEscaleSurfStress (default = .FALSE.)
+   - if TRUE scale ice-ocean and ice-atmosphere stress acting on sea ice
+     by AREA according to Connelly et al. (2004), JPO.
+   - For EVP and the LSR solver, the implicit part of the drag term is
+     the only non-zero term in the denominator when there is no ice (which
+     prevented running the model with zero ice-ocean drag). If
+     SEAICEscaleSurfStress = .TRUE., this results in a division by zero
+     (or zero main diagonals BU/BV) which need to be caught. A practical
+     consequence is that for open water, the momentum equation reduce
+     to trivially 0 = 0 + 0 (for EVP). For LSR, BU/BV are reset to 1, if
+     they happen to be zero, often leading to a non-zero solution over
+     open water.
+ o pkg/seaice: revise EVP code (seaice_evp.F) in preparation for a more
+     efficient EVP method.
+   - introduce area-weighted averages for e12 (analogously to
+     seaice_calc_viscosities.F); this totally changes lab_sea.hb87 (2 digits
+     remain, but also changing the order of terms in the previous average
+     changed the results as much) -> update experiment
+   - add SEAICE_DELTA_SMOOTHREG code
+   - disentangle computation of zetaC/deltaC and zetaZ/deltaZ, also for
+     TEM-code
+   - adjust loop bounds so that only required fields are computed
+   - add new averaging code for zetaZ/deltaZ (again similar to
+     seaice_calc_viscosities.F), inactive by default for now (will change
+     results again), but will replace old code eventually
+ o eesupp/src:
+   - add an other alternative for multi-proc GLOBAL_SUM (in global_sum_tile.F)
+     to always cumulate tile local-sum in the same order
+     (option #define GLOBAL_SUM_ORDER_TILES in CPP_EEOPTIONS.h).
+     Still uses MPI_Allreduce (like standard code) but on array of tiles
+     and should be faster than GLOBAL_SUM_SEND_RECV code.
+   - switch almost all verification experiments that use GLOBAL_SUM_SEND_RECV
+     (defined in CPP_EEOPTIONS.h_mpi) to GLOBAL_SUM_ORDER_TILES instead.
+   - add CPP_EEOPTIONS.h_mpi with GLOBAL_SUM_ORDER_TILES defined in 14 more exp.:
+      aim.5l_cs, cheapAML_box, deep_anelastic, dome, fizhi-cs-32x32x40,
+      fizhi-cs-aqualev20, fizhi-gridalt-hs, global_ocean_ebm, matrix_example,
+      natl_box, solid-body.cs-32x32x1, tutorial_advection_in_gyre,
+      tutorial_baroclinic_gyre and tutorial_held_suarez_cs.
+ checkpoint65n (2015/07/29)
+ o pkg/thsice:
+   - add a warning when used with pkg/aim but without updating SST
+     (stepFwd_oceMxL=F & useCoupler=F & tauRelax_MxL<>-1 ).
+ o pkg/offline:
+   - change where Offline-Fields are loaded, from load_fields_driver.F to
+     directly within FORWARD_STEP, just after updating iter number and time;
+   - move setting of GM and KPP diffusivity out of OFFLINE_FIELDS_LOAD into new
+     S/R OFFLINE_GET_DIFFUS that is called towards the end of DO_OCEANIC_PHYS;
+    These changes allow:
+     a) to recover exactly on-line results using deltaToffline=deltaTClock,
+     tested (using offlineIter0= nIter0 -1 and offlineTimeOffset= -deltaT/2)
+     both with Lin & Non-Lin Free-Surf, both with staggerTimeStep & synchronous
+     time-step, both with GM & KPP files and with recomputing these fields;
+     b) no needs to switch on staggerTimeStep anymore;
+     c) simplify rescaling of offline horiz. velocity with Non-Lin Free-Surf.
+   - update output of experiment tutorial_dic_adjoffline (only 3 digits left).
+ o pkg/offline:
+   - change (rarely used) offset-iteration parameter to an offset time (in s):
+     can easily recover previous offset-iter effect by setting offset-time
+     (offlineTimeOffset) to offset-iter x deltaToffline;
+   - do not turn-off Temp & Salinity surface relaxation when using KPP (used
+     in KPP as part of surface buoyancy forcing) in offline run.
+   - fix ptracers KPP non-local term in the case where KPP is re-computed.
+ o OpenAD
+   - Adding preliminary ggl90 test to OpenAD verification.
+     Config. with ggl90 currently diverges after 64 time steps
+     so will need more work to become more stable
+   - Adding preliminary kpp test to OpenAD verification.
+     required small tweakes in kpp_routines.F
+   - Merge and update from Krishna Narayanan's contrib area:
+     * Add one variable for preliminary OpenAD DIVA
+     * Add replacement time-stepping for OpenAD DIVA
+     * genmake2 flag -diva (but only for OpenAD; preliminary)
+     * required modifs for OAD_support
+     successful preliminary test for tutorial_global_oce_biogeo/
+ o pkg/seaice:
+   - initialise deltaC in seaice_lsr, cosmetic changes in seaice_lsr
+   - add cpp-flag SEAICE_DELTA_SMOOTHREG for option of regularising
+     delta with a smooth function in s/r seaice_calc_viscosity
+     (no effect on EVP)
+   - rename local suffix "sqr" into "sq" for more consistent variable names
+ o pkg/seaice:
+     add new parameter SEAICE_deltaMin that is used ***only***
+     for regularizing Delta (and nothing else, like the parameter
+     which is also used for all sorts of things SEAICE_EPS).
+     Defaults to SEAICE_EPS for backward compatibility only.
+ o pkg/seaice: replace erroneously storing e12Csqr on the wrong tape with
+     the wrong key by inialising it before use -> fixes a recomputation
+     problem but does not fix the gradient
+ o pkg/layers:
+   - move resetting of flux arrays to outside the iLa loop
+     (this caused layers_diapycnal to not work with more than one layer coord.)
+   - fix bug in calculation of layers_recip_delta in layers_init_fixed.F
+ o pkg/layers:
+   - remove from common block 3D layers fields (used to diagnose transport
+     in tracer coords) and declare them as local arrays in layers_calc.F
+ o pkg/seaice:
+   - Rename SEAICE_VECTORIZE_LSR_ZEBRA to SEAICE_LSR_ZEBRA and define it
+     in lab_sea forward experiment (changes results -> updated)
+   - update adjoint experiment lab_sea after cleaning up seaice_lsr_tridiagu/v
+ o pkg/seaice: modify seaice_lsr.F in order to improve the gradient
+    computations; for SEAICE_VECTORIZE_LSR
+   - move the loops over which the tridiagonal solvers (seaice_lsr_tridiagu/v)
+     sweep to the outside,
+   - remove store directives and add "CADJ loop sequential" directives
+     in analogy to model/src/solve_tridiagonal.F
+   - replace many "#ifdef SEAICE_VECTORIZE_LSR_ZEBRA" by variable loop
+     boundaries to yield more readable code. This has also the charming side
+     effect that your can use SEAICE_VECTORIZE_LSR_ZEBRA without
+     SEAICE_VECTORIZE_LSR (i.e. adjoint without recomputations in
+     seaice_lsr_tridiagu/v now requires either of these flags, vectorization
+     still requires SEAICE_VECTORIZE_LSR with SEAICE_VECTORIZE_LSR_ZEBRA as
+     an additional option)
+    The tridiagonal solvers are now completely analoguous to solve_tridiagonal.F
+    but the adjoint gradients (which are affected by this change) still explode.
+ o coupler (atm & ocn _compon_interf):
+   - avoid using Exch2 IO mapping if not suitable.
+ checkpoint65m (2015/06/15)
+ o pkg/layers:
+   - clean-up old parameters setting (from Sep 2012):
+     + remove old parameters setting from common block (declared locally);
+     + stop if any old parameter is mixed with new parameters;
+     + check for valid or consistent parameter setting (e.g., layers_name)
+   - check that layers_bounds for Pot.Density are in the right range;
+     this is supposed to catch un-updated setting after recently shifting
+     potential density field "prho" by -1000 (now in "sigma" scale).
+ o pkg/layers:
+   - Added missing call to layers_fill for keeping track of tottend in
+     pkg/diagnostics/diagnostics_fill_state.F
+ o pkg/layers:
+   - added CPP flux LAYERS_FINEGRID_DIAPYCNAL to disable fine-grid binning
+     of diapycnal fluxes
+ o pkg/layers:
+   - reverted changes to interpolation to previous treatment; there
+     was never actually a problem
+ o pkg/layers:
+   - fix interpolation of layers tracers in the presence of partial cells
+   - add lots of new functionality to compute water mass transformation
+     (enabled by CPP flag LAYERS_THERMODYNAMICS)
+   - add new calls from main code (diags_oceanic_surf_flux.F,
+     thermodynamics.F, impldiff.F) and gad to save the necessary fields
+     for layers_thermodynamics calculations
+ o pkg/ptracers:
+   - add capability of stepping a passive tracer forward without advection
+     by setting PTRACERS_advScheme to 0.
+ o pkg/diagnostics:
+   - add few (threads) _BARRIER around any update of "diag_pkgStatus".
+ o pkg/layers:
+   - shift potential density field "prho" by -1000 for density layer averaging so
+     that it corresponds to usual "sigma" definition (i.e., rho(p=const)-1000);
+     Note that density bin boundaries (layers_bounds in data.layers) have
+     to be set accordingly (i.e., shifted, in sigma scale).
+ o pkg/layers:
+   - fix snap-shot output of layer thickness @ V.pt and output of pot.density
+   - fix calculation of layer non-weighted velocity and layer probability
+   - add diagnostics for pot.density used for layer averaging
+ o pkg/seaice:
+   - seaice_calc_viscosity.F: change computation of deltaC**2 to ensure
+     positiveness, modify a few comments and improve variable names,
+   - the changed computation of deltaC affects most seaice-related
+     experiments at the truncation level.
+     seaice_itd.thermo is affected by far the most, with
+     only 7 digits of agreement remaining; update experiments.
+ checkpoint65l (2015/05/04)
+ o pkg/shelfice:
+   - in shelfice_thermodynamics.F, if SHELFICEBoundaryLayer=.true., then set
+     factor drKp1 to zero where it is negative (ie. do not use
+     SHELFICEBoundaryLayer if hFacC>1)
+   - the same for factor drLoc in shelfice_forcing.F
+ o tools/genmake2: move FEXTRAFLAGS from FFLAGS to FOPTIM to avoid a problem
+     with modules in ptracers, when using testreport option "-small_f"
+ o pkg/seaice/seaice_growth.F (in case of SEAICE_ITD)
+   - replace tmpscal1**1.36 by faster exp(1.36*log(tmpscal1))
+ o verification/testreport
+   - add new option -small_f
+     with this option testreport first makes the target small_f (*.f files)
+     before running make (all). This is useful for explicit inlining when
+     all sources need to be full available.
+ o pkg/exf/exf_interp.F:
+     remove previous changes related to reverse (decreasing) input grids latitude
+ checkpoint65k (2015/04/01)
+ o pkg/ecco:
+     fix missing cosphi initialization; use eccoiter in place of optimcycle;
+     if autodiff is not compiled then use READ_REC_XY_RL/READ_REC_XYZ_RL
+     instead of active read/write
+ o pkg/ctrl:
+     if autodiff is not compiled then use READ_REC_XY_RL/READ_REC_XYZ_RL
+     instead of active read/write.
+ o pkg/autodiff: make autodiff_readparms.F and autodiff_whtapeio_sync.F
+     return if .NOT.useAUTODIFF
+ o pkg/seaice: add CPP brackets (cost function related).
+ o model/src:
+     add useAUTODIFF run time switch.
+ o pkg/exf/exf_interp.F:
+     add code to allow input grids with latitude starting in the north (i.e. when
+     j=1 corresponds to northern edge of field); modify global_with_exf to test
+     this feature.
+ o verification/testreport:
+   - replace "grep -A3" with POSIX conformal sed command, because there are
+     implementations of grep that cannot do contextual searches
+   - replace "cat -n" by "nl" (two occurrences), because not all implementations
+     of "cat" have the option "-n"
+ o model/src:
+     add new file gsw_teos10.F that contains 3 functions, more or less a copy
+     of the gsw_toolbox.f90 of the TEOS-10 fortran interface, that are used to
+     convert from conservative to potential temperature. For now they are not
+     called anywhere.
+ o pkg/ggl90: make "useIDEMIX" useful
+   - re-organize code in s/r ggl90_calc a little to move computations that
+     are different for idemix into separate loops (changes verification
+     experiment idemix at truncation level, 12 digits remain -> updated)
+   - requires 2 new 2D fields KappaM, verticalShear
+   - make hFacI and recip_hFacI local 3D variables that are passed to
+     s/r ggl90_idemix
+   - fix and improve some comments
+ checkpoint65j (2015/02/25)
+ o pkg/openad
+   - synchronize seawater.F with version in model/src: replace routine
+     body of sw_temp by calling sw_ptmp and fix/add a few comments.
+ o pkg/mnc:
+   - change default value of pickup_read/write_mnc params to FALSE
+     (since few features are missing in reading MNC pickup files).
+ o model/src:
+   - change default (background) vertical diffusivity for salt to be the
+     temperature (background) vertical diffusivity.
+   - change background vertical diffusivity in vertical mixing pkgs ggl90,
+     kl10, my82 and pp81 from temperature diffusivity to salinity diffusivity.
+     This makes ptracers default diffusivity (that uses salt diffKr) more
+     consistent with vertical mixing schemes.
+ o verification/testreport:
+   - fix typo in "-pcls" option ;
+   - put temp files in /tmp (instead of in local dir)
+   - add option "-ncad" to use genmake2 new option "-nocat4ad"
+   - allow to use "-j" option (for multi-procs make) for AD, OAD and TLM.
+ o pkg/ggl90 (idemix code):
+   - apply few fixes ; add some missing "_d 0" ; update output of exp.
+     global_ocean.90x40x15.idemix
+ o OpenAD
+   - enable active file I/O and begin removal of work-around code
+     for OpenAD for handling control variables (memory vs. active files)
+   - new CPP options file OPENAD_OPTIONS.h
+   - revert to genarr2d gradient check for hs94.1x64x5
+   - (genarr3d tested by tutorial_global_oce_biogeo, tutorial_tracer_adjsens)
+   - gentim2d works for halfpipe_streamice but not yet hs94.1x64x5
+ o tools/genmake2:
+   - add option for an alternative Makefile (from Martin) where multiple
+     source files are sent to TAF (instead of all in one file).
+ o pkg/ggl90: add IDEMIX (Olbers and Eden, 2013)
+   - code provided by Carsten Eden as an extension of ggl90
+   - so far the code is turned on within ggl90 by setting a CPP-flag at
+     compile time; a runtime flag implementation is not yet complete
+   - tested in new verification experiment global_ocean.90x40x15.idemix
+ o verification:
+   - reduce length of the AD test run by half for experiments
+     global_ocean.cs32x15 (std + thsice) and isomip
+   - enable active file I/O for OpenAD, adjust verifications accordingly
+   - halfpipe_streamice: change gradient check from genarr2d to gentim2d
+ o verification/testreport:
+   - fix two non-POSIX sed statements so that there are no error messages
+     on Mac OS X
+   - replace hostname -s with hostname | sed 's/\..*$//'
+ o model/src/seawater.F:
+   - simplify SW_TEMP to just calling SW_PTMP with P and PR exchanged
+     (following the matlab code), which would have avoided the bug caught
+     by Matt (see below) in the first place
+ o pkg/shelfice:
+   - implement alternative discretisation of quadratic drag (selectBotDragQuadr)
+     and true distance in no-slip BC (bottomVisc_pCell) similar to bottom-drag.
+   - fix sign of friction tendency (no-slip BC) and fix u,v drag for thin
+     ice-shelf case (i.e., within surface level).
+   - add config summary in shelfice_check.F
+   - remove global variable recip_SHELFICElatentHeat and replace by a local
+     variable recip_latentHeat
+   - introduce diagnostics for friction velocity uStar (in case of
+     SHELFICEuseGammaFrict)
+   - change verification experiment isomip.htd:
+     + start from pickup (as input_ad at nIter0=8640)
+     + start from SHELFICEmassFile instead of SHELFICEloadAnomaly file
+     + test SHELFICEuseGammaFrict = .TRUE.
+     + test SHELFICEadvDiffHeatFlux = .TRUE.
+ o model/src:
+   - fix bug (Thanks to Matt) in function SW_TEMP (to convert Pot.Temp to
+     in-situ Temp) and in routine SW_TEMP (in pkg/openad);
+     update output of experiments global_with_exf.yearly and isomip (all 6).
+ o pkg/shelfice:
+   - change setting of kTopC to also be zero where there is no ice-shelf.
+   - zero out surface forcing arrays (for now, for T & S + EmPmR) where
+     ice-shelf is.
+   - first attempt to get RealFreshWaterFlux effects: for now, only without
+     SHELFICEboundaryLayer ; not consistent if using synchronous time-stepping.
+ o pkg/seaice: add the option to prescribe a fixed thickness PDF
+   for thermodynamic calculations
+   - because of divisions of the type 7/7 not exactly equal to 1, this change
+     affects results of some verification experiments by up to 4 digits:
+     global_ocean.cs32x15.seaice, lab_sea, lab_sea.fd, lab_sea.salt_plume,
+     seaice_obcs, seaice_obcs.seaiceSponge, seaice_obcs.tides
+     adjoint: lab_sea, lab_sea.noseaicedyn
+     -> updated
+ checkpoint65i (2015/01/23)
+ o model/src:
+   - change units of frictionHeating field from W to W/m^2
+   - fix bug in frictional heating from stratospheric drag in
+     S/R ATM_PHYS_TENDENCY_APPLY_V
+   - with synchronous time-stepping: move resetting to zero of frictionHeating
+     field from load_fields_driver.F to thermodynamics.F ;
+   - add diagnostics for frictional heating.
+ o model/src & gmredi K3D:
+   - add frictionHeating field to pickup-files (for synchronous time-stepping)
+   - move ALLOW_EDDYPSI block out of DYNVARS.h and merge it into FFIELDS.h
+   - rename uMean,vMean --> uEulerMean,vEulerMean (+ change diagnostics name
+     and name in pickup file).
+   - fix arguments of few DIAGNOSTICS_FILL calls in gmredi_k3d.F
+ o model/src:
+   - move (from ini_forcing.F) initialisation of all arrays in header file
+     FFIELDS.h into new S/R ini_ffields.F ; this fix broken restart
+     (since Nov 2012) with option selectAddFluid=1.
+ o pkg/shelfice:
+   - change units (+ document) of newly added field "shelfIceMassDynTendency"
+   - upgrade from _RS to _RL shelficeMass & shelficeLoadAnomaly arrays.
+ o pkg/obcs: re-organize obcs_calc_stevens.F to prepare for passive tracers
+ o pkg/seaice: two new runtime parameters:
+   - SEAICE_cStar replaces the hard wired "20" in the strength formulation,
+     long overdue
+   - SEAICE_tensilFac: preparation for Koenig-Beatty+Holland (2012)
+     parameterization of tensil stress for fast ice (does not do anything yet)
+ o pkg/seaice/seaice_check.F: left over from restricted addtive Schwarz method
+     for LSR: move checking overlaps out of JFNK-if-block
+ o pkg/atm_phys:
+   - move copy of grid and dynamical fields out of atm_phys_driver.F into
+     new S/R ATM_PHYS_DYN2PHYS.
+   - fix level height for Linear Free-Surf case (to be consistent with
+     fixed-in-time pressure levels).
+ o pkg/mom_common (bottomdrag):
+   - average bottomDragFld (ALLOW_BOTTOMDRAG_CONTROL) from grid-cell center
+     to correct location (U & V point) in S/R MOM_U/V_BOTTOMDRAG;
+     update output (adm & tlm) of experiment global_ocean.90x40x15.bottomdrag.
+ o pkg/shelfice (u/v_drag):
+   - add one argument (the other velocity component) to S/R SHELFICE_U/V_DRAG;
+   - use SHELFICEDragLinear & SHELFICEDragQuadratic in shelfice_v_drag.F
+     (now similar to shelfice_u_drag.F)
+   - remove condition on bottomDragTerms when calling SHELFICE_U/V_DRAG
+     from mom_vecinv.F (similar to mom_fluxform calls).
+ o pkg/mom_common (bottomdrag):
+   - add one argument (the other velocity component) to S/R MOM_U/V_BOTTOMDRAG;
+   - add options for alternative discretisation of velocity norm in quadratic
+     bottom drag: averaging of grid-cell-center KE to U.point and V.point
+     (selectBotDragQuadr=0, original code) can produce noisy patterns; this
+     improves when averaging only the other component (e.g. vVel for U bottom
+     drag) using wet-point method (selectBotDragQuadr=2) or not (=1).
+   - add options (bottomVisc_pCell) to account for partial-cell in bottom
+     friction (no-slip BC) thus getting the true distance from the bottom;
+     off by default since this also reduces model stability (explicit bottom
+     friction). Changes produce different machine truncation with linear-drag
+     + no-slip BC: update output of experiments exp4.stevens (10 digits) and
+     front_relax (bvp & mxl, 10 & 11 digits).
+ o model/src & mom pkgs:
+   - add one more level to vertical viscosity local arrays (Nr+1, previously Nr)
+     since no-slip bottom BC uses viscosity @ k+1 to update velocity @ level k
+   - for now and until vertical mixing scheme are updated to fill up level Nr+1,
+     just copy level Nr value to level Nr+1.
+ o doc:
+   - add notes form Abhisek Chakraborty on how to close Heat & Salt budgets.
+ o pkg/shelfice:
+   - shelfice_init_varia.F, shelfice_init_fixed.F, shelfice_readparms.F,
+     SHELFICE.h: move array shelficemass to init_varia, initialise
+     from array shelficemassinit, which is set in init_fixed and
+     has option to be set from file; introduce array
+     shelficeMassDynTend array, set thru file in init_fixed
+   - NEW FILE: shelfice_step_icemass.F: update shelficemass from either
+     shelfIceFreshWaterFlux and shelficeMassDynTend or H_streamice in
+     pkg/streamice
+   - shelfice_thermodynamics.F: call shelfice_step_icemass if
+     SHELFICEMassStepping = .true.
+   - shelfice_ad_diff.list: add new subroutine shelfice_step_icemass.f
+ checkpoint65h (2014/12/17)
+ o verification/global_ocean.90x40x15, global_ocean_ebm:
+   - update to generic controls.
+ o pkg/ctrl:
+   - ctrl_map_ini_genarr.F: test for igen>0
+   - ctrl_init_variables.F: add call to CTRL_MAP_INI_GENTIM2D.
+   - move gentim2d part of ctrl_map_ini_genarr.F to
+     new separate routine : ctrl_map_ini_gentim2d.F
+   - ctrl_cost_driver.F,ctrl_init.F ctrl_map_ini_genarr.F:
+     add time variable weights and cyclic controls (time mean,
+     seasonal cycle, etc) capabilities to gentim2d
+ o pkg/ecco:
+   - move reading of error, conversion to weights from
+     ecco_cost_init_fixed.F to ecco_toolbox.F (ecco_readwei)
+ o global_oce_llc90, cs32:
+   - activte sbo.
+   - CTRL_SIZE.h : add maxCtrlProc.
+   - activate the new genctrl capabilities.
+   - update following reorganization of global_oce_input_fields.tar.gz
+ o pkg/ctrl/ctrl_ad_diff.list:
+   - add missing ctrl_init_rec.f
+ o tools/OAD_support/keepOriginal:
+   - add ctrl_init_rec.F
+ o model/src/the_main_loop.F, pkg/ctrl/ctrl_map_ini_genarr.F:
+   - avoid recomputations of xx_gentim2d_dummy.
+ o momentum diagnostics:
+   - move filling of diagnostics Um_Diss & Vm_Diss from mom_fluxform.F and
+     mom_vecinv.F to timestep.F (to include Smag-3D contribution).
+ o pkg/seaice/seaice_lsr.F:
+   - fix computation of BU/BV, make sure they are non-zero, only necessary
+     for cubed sphere exchanges and SEAICE_OLx/y>0.
+     This makes calling s/r fill_cs_corner_rl obsolete (removed).
+ o verification/global_ocean.cs32x15/input.seaice
+   - add test for strong implicit coupling and restricted addtive Schwarz
+     methods for LSR
+   - update results/output.seaice.txt
+ o verification/tutorial_global_oce_biogeo:
+   - AD & OAD set-up: switch off ALLOW_OLD_VIRTUALFLUX (like in fwd set-up)
+     and set PTRACERS_EvPrRn(1,2) to zero (for DIC & ALK);
+     update output_adm,_oadm,_tlm.txt
+ o pkg/dic:
+   - change default to "#undef ALLOW_OLD_VIRTUALFLUX" in DIC_OPTIONS.h
+   - add a stop when ALLOW_OLD_VIRTUALFLUX is defined and PTRACERS_EvPrRn
+     for tracer 1 & 2 is set (to avoid double counting of dilution effect).
+ o verification/tutorial_global_oce_biogeo:
+   - AD & OAD set-up: do not set PTRACERS_EvPrRn for tracer 1 & 2 since
+     dilution is already added by pkg/dic ALLOW_OLD_VIRTUALFLUX ;
+     update output_adm,_oadm,_tlm.txt
+ o eesupp/src:
+   - add fill_cs_corner_rl.F (_RL-copy of fill_cs_corner_rs.F)
+     and call it in seaice_lsr when using nonzero SEAICE_OLx/y
+ o pkg/seaice: introduce strongly implicit coupling, intended for stabilizing
+   LSR (following Hutchings et al. 2004)
+   - introduce zetaZ as a global variable (requires adjustments in
+     seaice_evp.F and seaice_jfnk.F) and compute analoguously to etaZ
+     in seaice_calc_viscosities.F
+   - new flag SEAICEuseStrImpCpl (default off)
+   - add new terms zetaZ*du/dy and zetaZ*dv/dx on both sides of the
+     momentum equations
+   - JFNK-solver (preconditioner) adjusted to allow using this method
+     (where it does not have any positive effect)
+ o pkg/seaice
+   - add overlap for restrictive additive Schwartz method also to LSR, but
+     turn it off by default (because it only seems to work for non-cubed
+     sphere/llc topologies)
+ o pkg/autodiff
+   - add extra exchanges in addummy_in_steppging also for mnc output
+ o pkg/seaice:
+   - add extra exchanges before dumping adjoint fields in seaice_ad_dump.F
+     to avoid stripes in the adjoint output (similar to addummy_in_stepping.F)
+ o pkg/obcs:
+   - add option to specify domain-connected piece Id along OB though files
+     (for now, only used to diagnose PhiVel; default =1 -> global correction)
+   - modify obcs_diag_balance.F to process each connected-part separately;
+     exclude OB where Id = 0 but keep the full divergence there (-> constant
+     Psi along this portion of OB and all inflow derived from grad(Phi))
+   - add example of OB-conect files in verification/so_box_biogeo/input.
+ o pkg/diagnostics:
+   - improve treatment of Open-Boundaries in Velocity-Potential calculation:
+   a) use non zero matrix element across OB and solve for Phi 1 grid point
+      outside OB (i.e, where tracer OBCS are applied).
+   b) global imbalance of inFlow/outFlow across OB: instead of modifying
+      velocity across OB, spread it uniformly along the OB in the RHS.
+ checkpoint65g (2014/11/19)
+ o pkg/diagnostcis:
+   - add preconditioner off-diagonal factor (diagCG_pcOffDFac) as run-time param
+ o pkg/my82,pp81,kl10:
+   - fix ALLOW_3D_DIFFKR implementation (previously had no effect): use 3-D
+     field diffKr as background diffusivity to set minimum diffusivity value.
+ o pkg/seaice:
+   - add new parameter SEAICEuseEVPrev (for revisited EVP by
+     Bouillon et al 2013)
+   - add SEAICE_evpAlpha/Beta to namelist
+   - modify seaice_evp code to able to use SEAICEuseEVPrev. These changes
+     involve trivial re-ordering of divisions/multiplications that should not
+     have any effects, but ... they do change the results of lab_sea.hb87 so
+     that only 2 digits of agreement remain, in line with the general
+     instability/fragility of the evp-code. For now, I do not care and just
+     update the verification experiment
+ o pkg/ctrl : add generic pre-processing (xx_genarr2d_preproc etc)
+   - remove xx_genarr2d_numsmooth etc
+   - use xx_genarr2d_preproc etc instead
+   - carry out smooth_correl2D at initialization stage rather than during
+     time stepping.
+   - get smoothOpNb from xx_gentim2d_preproc
+ o global_oce_cs32 :
+   - add test of generic ecco capabilities.
+ o pkg/exf/exf_getsurfacefluxes.F :
+   - add to tmpUE/tmpVN rather than re-initializing them (conventional behavior).
+ o pkg/ctrl,ecco :
+   - omit un-necessary arguments to ctrl_cost_gen.F unless ECCO_CTRL_DEPRECATED
+     is defined.
+ o pkg/seaice: add diagnostics for Delta (deformation parameter)
+ o model/src:
+   - when ALLOW_3D_DIFFKR is defined, add a Warning if any of the vertical
+     diffusivity (background) is specified but ignored.
+ o verification:
+   - in testreport, convert hostname to lower case for default output dir name
+ o model, pkg : add useCTRL, useECCO parameters (on/off run time switch).
+ o pkg/dic: add modifications from Hajoon:
+   - add iron sedimentation flux function of the flux of PO4 out of bottom layer
+   - light attenuation: add self-shading effect by climatological Chlorophyll
+     (read from file).
+ o pkg/seaice/seaice_preconditioner.F : fix cpp flags, so that code also
+     compiles when SEAICE_ALLOW_DYNAMICS is undefined
+ o global_oce_llc90,cs32 : ecco_v4 verification exps now use separate
+     AUTODIFF_OPTIONS.h, CTRL_OPTIONS.h, ECCO_OPTIONS.h rather than
+     ECCO_CPPOPTIONS.h (i.e. replacing the deprecated, circumvoluted,
+     approach where CPP_OPTIONS.h includes an omnipotent
+     ECCO_CPPOPTIONS.h that superseeds pkgs '_OPTIONS.h').
+ o pkg/ctrl/ctrl_map_ini_genarr.F : include GMREDI_OPTIONS.h where
+     ALLOW_3D_KAPGM, ALLOW_3D_KAPREDI (to be added later) belong.
+ o pkg/seaice/SEAICE_SIZE.h : replace ALLOW_AUTODIFF_TAMC with ALLOW_AUTODIFF
+     to avoid needing AUTODIFF_OPTIONS.h anytime SEAICE_SIZE.h is included
+     (it seems that THSICE_SIZE.h, PTRACERS_SIZE.h have the same issue...)
+ o model/src, pkg/smooth, profiles, salt_plume, seaice, exf, ecco, ctrl :
+   add ECCO_OPTIONS.h, AUTODIFF_OPTIONS.h, CTRL_OPTIONS.h when needed
+   - ECCO_OPTIONS.h is needed when including ecco_cost.h, ecco.h
+   - AUTODIFF_OPTIONS.h is needed when including tamc.h, tamc_keys.h
+   - CTRL_OPTIONS.h is needed when including ctrl.h, optim.h, etc
+ o pkg/ctrl,ecco,exf :
+   - remove variables associated with NON-generic costs,
+     unless ECCO_CTRL_DEPRECATED is defined.
+   - remove NON-generic NON-obcs controls,
+     unless ECCO_CTRL_DEPRECATED is defined.
+ o pkg/ctrl : added ctrl_local_params.h
+ o pkg/ecco : added ecco_local_params.h
+ o verification : added ECCO_CTRL_DEPRECATED to most as and oad
+     experiments, which will progressively be removed once the
+     experiments are revised to use only generic controls/costs.
+ checkpoint65f (2014/10/13)
+ o pkg/ctrl, ecco, seaice : minor changes in headers
+ o global_oce_llc90,cs32 : ecco_v4 verification exps now test generic
+     cost function and control capabilities added since checkpoint65c.
+ o pkg/ctrl: regroup all obcs ctrl variables in CTRL_OBCS.h.
+ o pkg/ecco: increase modularity and improve logic
+   - ecco_toolbox.F (new) : basic operations that are often used,
+     including ecco_zero, ecco_cp, ecco_cprsrl, ecco_diffmsk,
+     ecco_addcost, ecco_add, ecco_div, ecco_readbar.
+   - cost_gencal.F (new) : determine filnames and records.
+   - cost_genread.F, cost_generic.F : condense code using ecco_toolbox.
+   - cost_generic.F : use spzeroloc rather than hard-coded -9999,
+     and exploit the above functions leading to more compact code.
+   - cost_genread.F : rm un-necessary arguments, re-arrange args order.
+   - ecco_check.F, ecco_readparms.F : bring logic up to date (using_tpj,
+     using_ers, using_gfo, using_mdt is now only defined within gencost)
+ o pkg/ecco: extend generic cost capabilities
+   - pkg/ecco : added 3D gencost (ALLOW_GENCOST3D), added gencost
+     capabilities via gencost_preproc (+ _c,_i,_r related params),
+     gencost_posproc (+ _c,_i,_r related params), gencost_nrecperiod,
+     gencost_outputlevel arguments to cost_generic
+   - pkg/ecco/cost_genread.F (new) : interface between cost_generic
+     and active_read, making room for gencost_preproc to take effect.
+     Added preproc code ('climmon') to replace GENERIC_BAR_MONTH.
+   - pkg/ecco/cost_generic.F :
+     compute and store misfit maks*(model-data) in localdif that is
+     then used in cost and for output, output misfit if outlev.GT.0
+   - pkg/ecco/cost_averagesfields.F : depend on gencost_barskip
+     rather gencost_barfile for deciding whether to write barfile
+   - pkg/ecco/ecco_cost_driver.F : extract call to cost_profiles from cost_hyd
+   - pkg/ecco/ecco_cost_init_fixed.F : extract gencost weights from
+     ecco_cost_weights, re-activate ecco_summary, determine gencost_barskip
+   - pkg/ecco/ecco_summary.F : report gencost variables
+   - pkg/ecco/cost_gencost_customize.F : treat case of scatterometer costs
+ o pkg/sea/SEAICE_OPTIONS.h : add ALLOW_COST_ICE, ALLOW_SEAICE_COST_SMR_AREA
+ o pkg/ecco: internal re-organization
+   - resolve un-necessary dependancies within pkg/ecco and to pkg/ctrl
+     (rm includes of optim.h and ctrl.h, replace optimcycle with eccoiter,
+     mv relevant variables definition from ecco_cost.h to ecco.h,
+     make sure gencost routines only include ecco.h)
+   - throughout : add missing CCP switches, rm unused variables,
+     and rm un-necessary CPP switches
+   - throughout gencost routines : replace modelstartdate with
+     gencost_startdate when needed
+   - cost_bp_read.F : use arguments, instead of common blocs
+     so that it can be used also by (new) cost_gencost_bpv4.F
+   - ecco_init_varia.F : initialize RHOsumGlob_0, VOLsumGlob_0
+   - ecco_phys.F : compute etanFull
+   - ecco_readparms.F : rename using_topex as using_tpj, add
+     bpv4-grace to gencost list, initialize added parameters
+   - ecco_summary.F : include SIZE.h needed for augmented ecco.h
+ checkpoint65e (2014/09/28)
+ o pkg/obcs:
+   - replaced the just-added CPP options with run-time variables
+     (see pkg/obcs/OBCS_PARAMS.h for details)
+ o pkg/obcs:
+   - add additional CPP options for sponge boundary layers
+     (see pkg/obcs/OBCS_OPTIONS.h for details)
+ o pkg/atm_phys:
+   - implement simple (obliquity only, assuming circular planet orbit)
+     seasonal cycle for incoming insolation ; used when run-time parameter
+     "select_incSW" is set to 1 ; by default (=0), uses old unchanged formula.
+ o pkg/exf, pkg/ecco, pkg/ctrl:
+   - add ctrlUseGen and .NOT.ctrlUseGen exclusive brackets
+   - activate gentim2d for xx_atemp,xx_aqh,xx_swdown,xx_lwdown,xx_precip
+   - implement gentim2d for xx_tauu, xx_tauv
+ o pkg/ctrl, pkg/ecco :
+   - fix and complement the generic controls implementation
+ o pkg/exf/exf_getclim.F, exf_getffields.F, exf_getsurfacefluxes.F,
+     pkg/shelfice/shelfice_thermodynamics.F,
+     verification/hs94.1x64x5/code_ad/ctrl_map_gentim2d.F,
+     verification/hs94.1x64x5/code_oad/ctrl_map_gentim2d.F :
+   - add weight in CTRL_GET_GEN calls
+ o pkg/ctrl :
+   - ctrl_get_gen.F : add weight as input parameter, and apply
+     it directly rather than using smooth_correl2Dw (to be retired).
+   - ctrl_map_gentim2d.F : add wgentim2d in CTRL_GET_GEN call
+ o pkg/ctrl :
+   - introduce run time switch ctrlUseGen (in ctrl.h, ctrl_check.F,
+     ctrl_init_variables.F, ctrl_readparms.F, ctrl_summary.F)
+   - re-activate ctrl_summary (call in ctrl_init.F)
+ o pkg/ctrl/ctrl_cost_gen.F :
+   - fix CCP brackets, remove un-necessary myiter, mytime
+ o pkg/ecco, pkg/ctrl :
+   - remove cost_genctrl.F (now pkg/ctrl/ctrl_cost_driver.F)
+   - remove cost_forcing_gen.F (now pkg/ctrl/ctrl_cost_gen2d.F)
+   - add ctrl_cost_driver.F (replaces pkg/ecco/cost_genctrl.F)
+   - add ctrl_cost_gen2d.F (replaces pkg/ecco/cost_forcing_gen.F)
+ checkpoint65d (2014/09/15)
+ o pkg/ctrl/CTRL_GENARR.h, ctrl_readparms.F :
+   - add xx_genarr2d_bounds,xx_genarr3d_bounds,
+     xx_genarr2d_numsmooth, xx_genarr3d_numsmooth
+ o pkg/ctrl/ctrl_map_ini_genarr.F :
+   - remove compilation failure
+   - replace hard coded example
+   - use ctrl_map_ini_gen2D, 3D
+ o pkg/ctrl/ctrl_pack.F, ctrl_unpack.F :
+   - on/off switch based upon xx_genarr2d_weight,3d
+ o src/packages_init_variables.F :
+   - regroup pkg/estimation calls
+   - remove CTRL_MAP_INI, CTRL_MAP_INI_ECCO
+     (moved to ctrl_init_variables)
+ o cost/cost_init_varia.F :
+   - remove ecco_cost_init_varia
+     (moved to ecco_init_varia)
+ o ctrl/ctrl_init_variables.F :
+   - add CTRL_MAP_INI, CTRL_MAP_INI_ECCO
+   - add CTRL_MAP_INI_GENARR, SEAICE_CTRL_MAP_INI
+ o ctrl/ctrl_map_ini.F :
+   - remove ctrl_map_ini_genarr, seaice_ctrl_map_ini
+     (moved to ctrl_init_variables)
+ o ctrl/ctrl_map_ini_ecco.F :
+   - remove ECCO_PHYS (mv to ecco_init_varia)
+   - remove seaice_ctrl_map_ini (mv to ctrl_init_variables)
+ o ecco/ecco_ad_diff.list :
+   - add ecco_init_varia.f
+ o ecco/ecco_init_varia.F
+   - new routine
+ o pkg/streamice:
+   - move call to STREAMICE_INITIALIZE_PETSC from the_model_main.F
+     to streamice_init_fixed.F ; fix setting of STREAMICEisOn.
+   - from model/src, only call pkg/streamice routines if useStreamIce is TRUE.
+ o pkg/generic_advdiff:
+   - fix bug causing negatives in GAD_SMOLARKIEWICZ_HACK, introduced 8/8/2014.
+ o pkg/exf:
+   - exf_getffields.F : add xxg_atemp, xxg_aqh, xxg_swdown, xxg_lwdown,
+      xxg_precip capability
+   - exf_wind.F : no need for ALLOW_WSPEED_CONTROL cpp switch
+ o pkg/ctrl:
+   - ctrl_pack.F, ctrl_unpack.F : omit (un)packing of undefined xx_gentim2d
+ o model/src/load_fields_driver.F :
+   - move call to CTRL_MAP_GENTIM2D ahead of BULKF_FIELDS_LOAD, EXF_GETFORCING
+     so xx_gentim2d can be applied to e.g. exf fields in a timely manner.
+ o OpenAD verification experiments:
+   - Include explicitly AUTODIFF_OPTIONS.h, COST_OPTIONS.h, and CTRL_OPTIONS.h
+     in src files (to enable to skip the ECCO_CPPOPTIONS.h);
+     for now, only in pkgs used in OpenAD verification experiments.
+   - Change all except one (halfpipe_streamice) OpenAD experiments to use pkg
+     specific option file (AUTODIFF_OPTIONS.h, COST_OPTIONS.h & CTRL_OPTIONS.h)
+     instead of using ECCO_CPPOPTIONS.h (with all relevant options in it).
+     This applies to both TAF (*/code_ad/) and OpenAD (*/code_oad/) tests.
+ o OpenAD verification tests:
+   - finish removing ALLOW_AUTODIFF_OPENAD (replaced by ALLOW_OPENAD);
+   - finish replacing ALLOW_AUTODIFF_TAMC by ALLOW_AUTODIFF (except for
+     tape/storage which are specific to TAF/TAMC) in pkgs used in OpenAD exp.
+   - leave ALLOW_AUTODIFF_TAMC undef in OpenAD verification tests (*/code_oad/)
+     and remove local copy of "tamc.h" (needed only if ALLOW_AUTODIFF_TAMC).
+ o model/src & generic_advdiff:
+   - change hard-coded loop-range in S/R APPLY_FORCING_T/S to set T & S
+     forcing over 0:sNx+1, 0:sNy=1 (instead of just 1:sNx,1:sNy): Model
+     dynamics requires valid tracer forcing only over tile interior but, for
+     some diagnostics, may need to extend it over 1 point in tile halo region.
+   - in gad_calc_rhs.F, update calls to gmredi_x/ytransport to get valid
+     tendency over i,j_Min,Max range. This allows to simplfy i,j_Min,Max
+     setting in temp/salt/ptracer_integrate.F
+ o pkg/dic:
+   - multiply tracer tendencies by maskInC (if ussing OBCS) before updating
+     gchem tracers: this allows to skip the 2nd call to OBCS_APPLY_PTRACER
+     in gchem_forcing_sep.F
+ o pkg/autodiff & obcs:
+   - add storage of current OB values for U & V (was already done for T & S).
+ checkpoint65c (2014/08/30)
+ o pkg/dic:
+   - take out of dic_atmos.F the initialisation part (corresponding to istate=0)
+     and move it to new S/R DIC_INI_ATMOS ; also simplify the dependencies for
+     AD compilers (but still a Pb with multi-threading and Ajoint dependencies).
+ o verification:
+   - new experiment testing OBCS and DIC pkgs, using params & output from
+     tutorial_global_oce_biogeo but limited to a sub-domain around Drake
+     passage: take OBCS from the last year of a 2 yrs simulation and initial
+     conditions from t=1.yr while keeping the same forcing.
+ o model/src:
+   - when allowFreezing=T, only reset below freezing initial Temp to Tfreezing
+     (at any k) if checkIniTemp is not set to FALSE (default checkIniTemp=T).
+ o pkg/diagnostics (Stats-Diags):
+   - re-write S/R DIAGSTATS_CALC (more similar to TARGET_NEC_SX part) to:
+     a) refine region where stats are computed, excluding where arrhFac=0 ;
+     b) fix missing interior mask (use with OBCS) in 3-D fields statistics;
+     c) extend regional stats over the region edges (for U or V pt location).
+ o pkg/gchem:
+   - add a (2nd) call to OBCS_APPLY_PTRACER in gchem_forcing_sep.F (needed since
+     pkg/dic is currently changing/updating ptracers values beyond the OB).
+ o verification (hs94):
+   - convert Held & Suarez external_forcing.F (from hs94.cs, with Sigma-coords
+     bits) to apply_forcing.F and undef USE_OLD_EXTERNAL_FORCING in experiments
+     hs94.cs-32x32x5 and tutorial_held_suarez_cs ; also use the same version of
+     apply_forcing.F in 2D hs94 (fwd, ad & oad) but keep LatLon hs94 unchanged.
+ o pkg/ptracers:
+   - implement Adams-Bashforth on pTracers (instead of on tracer tendency),
+     switched on by setting PTRACERS_doAB_onGpTr=F (default set to doAB_onGtGs)
+   - change exp4 secondary test (input.nlfs) to test AB on T & S & pTracer
+     with AB-2 code (so that it get tested).
+ o model/src:
+   - allow to apply Adams-Bashforth on Temp & Salt (instead of on gT,gS)
+     with AB-2 code (previously only available with AB-3 code).
+     Also move the code (call to ADAMS_BASHFORTH S/R) form thermodynamics.F
+     to temp/salt_integrate.F (since the 2nd part of gt/sNm1 update is done
+     there, by calling CYCLE_AB_TRACER).
+ o pkg/generic_advdiff:
+   - change Tracer argument (drop bi,bj indices) in S/R GAD_CALC_RHS,
+     GAD_C2_ADV_R, GAD_U3_ADV_R, GAD_C4_ADV_R, GAD_DIFF_R, GAD_BIHARM_R
+     + also in GMREDI_X/Y/RTRANSPORT ; and update corresponding calls in
+     S/R temp/salt/ptracers_integrate.F
+ o model/src & pkg/ptracers:
+   - remove common block variables gT,gS (in DYNVARS.h), except when
+      USE_OLD_EXTERNAL_FORCING is defined; update TAF storage accordingly.
+   - remove common block variable gPtr.
+ o model/src & pkgs:
+   - change gTracer (and/or tracer) argument (drop bi,bj indices) in S/R
+      ADAMS_BASHFORTH(2&3), CYCLE_(AB_)TRACER, FREESURF_RESCALE_G,
+      IMPLDIFF, SOLVE_TRIDIAGONAL & _PENTADIAGONAL, GAD_SOM_ADVECT,
+      GAD_ADVECTION, GAD_CALC_RHS, GAD_IMPLICIT_R, TIMEAVE_CUMUL_DIF_1T
+   + change accordingly all calling S/R.
+   - use local temperature/salinity/ptracer tendency array (without bi,bj)
+     in S/R temp/salt/ptracers_integrate.F
+ o pkg/seaice:
+   - move computation of stress contributions to rhsU/V in s/r seaice_lsr
+     to separate s/r seaice_lsr_rhsu/v in order to be able to re-use code
+   - make u/vIceC local variables if SEAICE_CGRID is defined only to be used
+     in seaice_lsr
+   - seaice_lsr.F: make local 4D arrays UXX, VYY, etc 2D
+     in s/r seaice_lsr_calc_coeffs
+ o pkg/mdsio:
+   - in MDS_READ/WRITE_FIELD, stop if file-name (+prefix) is too long
+     (e.g., > MAX_LEN_MBUF -90 ) or, in INI_MODEL_IO, if mdsioLocalDir is
+     too long (e.g., > MAX_LEN_FNAM/2 )
+ checkpoint65b (2014/08/12)
+ o pkg/matrix:
+   - pass, as argument, updated tracer field to S/R MATRIX_STORE_TENDENCY_EXP
+ o model/src:
+   - fix initialisation of geothermalFile; compile geothermal-flux code in
+     natl_box verification experiment.
+ o model/src & pkg/down_slope:
+   - push the k loop inside S/R TIMESTEP_TRACER (now called outside the k loop).
+   - in dwnslp_apply.F, update tracer tendency instead of the future tracer
+     field and call S/R DWNSLP_APPLY before TIMESTEP_TRACER; this affects
+     results at machine truncation level: update output of experiments
+     global_ocean.90x40x15.dwnslp (FWD) and lab_sea.noseaicedyn (AD).
+ o pkg/diagnostics (Stats-Diags):
+   - do not cumulate the full volume when DIAGNOSTICS_FILL is
+     called with bibjFlg < 0 (no increment of the counter for 2D/3D diag);
+     This fix the mean statistics when DIAGNOSTICS_FILL is called multiple
+     times (but Min,Max and StD are still wrong).
+ o model/src:
+   - add geothermal flux forcing: read in ini_forcing.F as time-constant
+     field "geothermalFlux" applied in S/R APPLY_FORCING_T (apply_forcing.F)
+ o model/src:
+   - move CYCLE_TRACER calls from tracers_correction_step.F to temp/salt/ptracer
+     _integrate.F so that, when leaving S/R THERMODYANMICS, theta,salt and pTrac
+     arrays are already updated while adjustments (filters, conv.adjustment) are
+     still applied later, in S/R TRACERS_CORRECTION_STEP.
+ o model/src:
+   - store in common bloc array "rhoInSitu" the virtual potential temperature
+     anomaly that is used to compute geopotential: this make the atmos code
+     more similar to ocean code which already uses rhoInSitu in calc_phi_hyd.F
+ o pkg/seaice/seaice_lsr.F
+   - rename integer variable ilcall to ipass (that's what it is called
+     in the residual diagnostics
+   - change time stepping for NPSEUDOTIMESTEP > 2 (does not change the
+     default) for improved non-linear convergence of the first few steps
+   - adjust a few comments and add new ones to explain some of the store
+     directives
+ o pkg/generic_advdiff (& ptracers):
+   - re-work the code to check for valid advection scheme and for minimum
+     size of overlap (now stored in local common bloc in gad_advscheme.F)
+ o pkg/seaice: another attempt to make the adjoint work for sea ice dynamics
+   - re-initialize more variables in seaice_lsr: u/vIceC, u/vIceNm1
+   - add an auxilliary variable "bet" and fix store directives and keys in
+     seaice_lsr_tridiagu/v, this seems to do the trick (i.e. more or
+     less exact gradients in my tests); but there are still
+     recomputation warning (although gradients are sort of OK), when
+     SEAICE_LSR_VECTORIZE is not defined, so this flag and
+     SEAICE_LSR_VECTORIZE_ZEBRA are recommended for efficiency.
+   - update verification experiments lab_sea.
+   - change some comments in S/R seaice_calc_viscosities
+ o model/src:
+   - if staggerTimeStep=T, always apply exchange to velocity field in
+     do_stagger_fields_exchanges.F instead of in do_fields_blocking_exchanges.F
+     (independent of using multi-dim advection or not); no effect on FWD run
+     but affects AD results (at machine truncation level): update output of
+     experiment 1D_ocean_ice_column (ad: 12 digits), hs94.1x64x5 (ad,oad: 13.d)
+     and isomip (oad: 12.d).
+ o pkg/generic_advdiff:
+   - stop if doAB_onGtGs is set to FALSE but ignored
+   - refine warning related to stability of tracer time-stepping
+     regarding internal wave dynamics.
+   - setting of AdamsBashforth_T,S when doAB_onGtGs=F: remove condition
+     on staggerTimeStep & implicitIntGravWave (will now get a warning
+     if potentially unstable).
+ o pkg/kl10:
+   - add new pkg "kl10" for mixing due to internal wave breaking, from
+     http://www.sciencedirect.com/science/article/pii/S1463500310000144
+     (contribution from Jody Klymak), tested in verification experiment
+     verification/internal_wave/input.kl10/
+ o isomip experiment:
+   - test pkg/shelfice with Non-Lin Free-Surf in one of the FWD set-up
+     (input.htd) and update the output.
+ o cd_code experiments:
+   - use default cd_code options (#undef CD_CODE_NO_AB_MOMENTUM &
+     #undef CD_CODE_NO_AB_CORIOLIS) in experiments: cfc_example (fwd)
+     global_ocean.90x40x15 (ad & oad) and OpenAD (ad & oad) and
+     update the corresponding output.
+ o pkg/seaice:
+   - reduce the number of include files and store directives in
+     S/R seaice_lsr_tridiagu/v
+   - change the order of loops in one case in S/R seaice_lsr_tridiagv
+     (only for SEAICE_VECTORIZE_LSR_ZEBRA defined), which allows me to
+     get rid off one store directive (a TAF bug?)
+   - add one more instance of ifdef SEAICE_VECTORIZE_LSR_ZEBRA in
+     S/R seaice_lsr_tridiagv to change the loop range for consistency
+   - remove ilcall, m from parameter list of S/R seaice_lsr_tridiagu/v
+   - fix a bug that affects the JFNK solver: replace sNx/y by i/jMax in
+     S/R seaice_lsr_tridiagu/v (requires update of
+     offline_exf_seaice/input.dyn_jfnk)
+ checkpoint65a (2014/07/27)
+ o model/src:
+   - Non-Lin Free-Surf in p/z coords: allows hFacW,S to be larger than
+     surrounding hFacC=1 @ edge of a step with different kSurfC on either side
+     (topo in p-coords, ice-shelf in z-coords); update output of experiments
+     tutorial_global_oce_in_p and isomip (both AD and OpenAD output).
+ o model/src:
+   - collect momentum forcing tendency into local 2-D array (passed as argument
+     to apply_forcing S/R); this simplifies mom. Forcing diagnostics and CD_CODE
+     parts in timestep.F (without CD_CODE_NO_AB_MOMENTUM defined = the default);
+     affects results at machine truncation level (e.g., if using OBCS_SPONGE).
+   - collect T & S forcing tendency into local 2-D array (passed as argument to
+     apply_forcing S/R); add 3-D diagnostics for temp & salt forcing tendency.
+     affects results at machine truncation level (e.g., ocean: if using
+     SHORTWAVE_HEATING ; atmos: if using FrictionHeating or (atm_Rq<>0) moist
+     correction due to vertical advection).
+   - update output of experiments: fizhi-cs-32x32x40 (13 digits),
+     global_ocean.cs32x15 (fwd: icedyn, seaice, thsice, all 3 @ 11d; adm & tml:
+     seaice_dynmix & thsice, fwd grd @ 3 & 8), hs94.1x64x5 (ad grd @ 13),
+     obcs_ctrl (ad & fwd grd @ 12 & 7).
+ o pkg/ptracers & diagnostics:
+   - use ptracers (short) name (instead of long one) to make ptracers diagnostics
+     title (to avoid some unexpected truncation); sort out ptracers diags units.
+   - collect ptracer forcing tendency into local 2-D array (passed as argument
+     to apply_forcing S/R); add 3-D diagnostics for ptracers forcing tendency.
+ checkpoint65 (2014/07/18)
+ o pkg/fizhi:
+   - add parenthesis around fizhi tendencies in fizhi_tendency_apply.F: this
+     affects results at machine truncation level. Update output of experiments
+     fizhi-cs-32x32x40 (12 digits for cg2d) & fizhi-cs-aqualev20 (13 digits).
+ o pkg/seaice: more clean up
+   - rename TAF common block tapes to be more consistent and remove
+     unnecessary duplicates
+   - add store directives to remove more recomputations, but use smaller
+     tapes (and adjust keys) when SEAICE_LSR_ADJOINT_ITER is undefined.
+     The idea behind this flag is to reduce the memory footprint when the
+     adjoint of the LSR is not required. As of now, defining the flag
+     SEAICE_LSR_ADJOINT_ITER increases 4 common block tapes for 2D field by
+     a factor of SOLV_MAX_FIXED (=500 by default in SEAICE_SIZE.h).
+     For experiment offline_exf_seaice, this means on a linux box with gfortran
+     nearly a factor of 10 (but keep in mind there is mostly seaice code in
+     this experiment):
+     > size mitgcmuv_ad
+     text    data        bss     dec        hex
+     5100659 1216  220458952  225560827  d71c8fb
+     5339425 1200 1868783272 1874123897 6fb4dc79 (SEAICE_LSR_ADJOINT_ITER)
+     but only a moderate increase of 36% for global_ocean.cs32x15:
+     text    data        bss     dec        hex
+     6695027 1648 1014578664 1021275339 3cdf6ccb
+     6695203 1648 1382505320 1389202171 52cd8afb (SEAICE_LSR_ADJOINT_ITER)
+   - note: there are still recomputations in global_ocean.cs32x15 and
+     offline_exf_seaice and the gradient agreement changes (gets a
+     little worse) for global_ocean.cs32x15 (-> update output_adm.seaice.txt)
+   - in general, the AD gradients still are wrong
+ o OpenAD
+   - clean up code_oad/ directories somewhat by moving files
+     dontCompile, dontTransform, keepOriginal to OAD_support/
+ o model/src:
+   - using MOM fluxform and Non-Lin Free-Surf with momDissip_In_AB=F
+     (not currently tested): add dissipation terms before NLFS rescaling of
+     tendencies (previously done after).
+ o pkg/diagnostics:
+   - write stats-diags in ascii file with more digits (same as in monitor).
+ o pkg/down_slope:
+   - drop the bi,bj dimension of argument recip_hFac in S/R DWNSLP_APPLY; with
+     NLFS (not tested), use new recip_hFac value in order to conserve tracer.
+ o model/src:
+   - new file "apply_forcing.F" containing all the code previously in
+     external_forcing.F, but with new argument list: pass, as new argument,
+     the current level tendency array to update (instead of a direct update
+     of the common bloc array). Change the corresponding calls.
+   - add CPP option USE_OLD_EXTERNAL_FORCING (default is undef) to use
+     EXTERNAL_FORCING_U,V,T,S subroutines (for backward compatibility).
+ o pkg/seaice/seaice_lsr, a little bit of clean up
+   - rearrange some code blocks, so that now all calculations for
+     setting up the right-hand-sides done within one single block
+     (I find that easier to read and understand)
+   - rearrange freedrift-code to reduce the number of ifdefs
+   - adjust some indentations and comments
+ checkpoint64z (2014/07/10)
+ o model/src and several pkgs:
+   - change argument list of all S/R called from external_forcing.F and
+     called from ptracers_forcing.F (renamed to ptracers_apply_forcing.F)
+     to pass, as argument, the current level tendency array to update
+     (instead of a direct update of the common bloc array).
+   - change also (in the same way) argument list of PTRACERS_APPLY_FORCING;
+   - rename taueddy_external_forcing.f to taueddy_tendency_apply.F
+ o pkg/seaice/seaice_lsr.F
+   - always initialize local arrays in seaice_lsr_tridiagu/v
+   - add more local tapes to seaice_lsr_tridiagu/v
+   - move storing u/vice(:,:,bi,bj) out of seaice_lsr_tridiagu/v, but
+     keep it in bi/bj loop; this seems to be essential
+   - gradients are still wrong but only by 4-7 orders of magnitude
+     instead of 15 orders of magnitude, lab_sea improves a little
+ o pkg/seaice
+   - (pkg/autodiff) remove storing/restoring of seaiceMaskU/V that
+     generates unnecessary code in seaice_lsr_ad
+   - add more store directives in seaice_lsr to avoid unnecessary code
+     in seaice_lsr_ad
+   - exclude some residual computations in seaice_lsr when
+     ALLOW_AUTODIFF_TAMC is defined in order to avoid unnecessary code
+     in seaice_lsr_ad
+   - add more storing, a new tape (model/src/the_main_loop.F) and
+     another key for SEAICE_LSR_VECTORIZE_ZEBRA (the local keys ilockey
+     and klockey should be checked by a specialist)
+   - modify ( define SEAICE_VECTORIZE_LSR and SEAICE_LSR_ADJOINT_ITER )
+     and update lab_sea after previous changes in pkg/seaice below
+ o pkg/autodiff:
+   - introduce useSmoothCorrel2DinAdMode, SEAICEapproxLevInAd, and
+     viscFacInAd : run time parameters allowing for adjoint switches
+     note : logic for useSmoothCorrel2DinAdMode is in ctrl_readparms.F
+ o pkg/ecco:
+   - introduce cost_gencost_boxmean.F that computes a box mean
+     temperature (for use in adjoint sensitivity studies).
+ o model/src/set_defaults.F : initialize viscFacAdj to 1.
+ o pkg/mom_common/mom_calc_visc.F:
+   - ifdef ALLOW_AUTODIFF then include viscFacAdj factor.
+ o pkg/seaice/seaice_summary.F:
+   - statement for SEAICEadjMODE now in autodiff_readparms.F
+ o pkg/seaice:
+   - remove some store directives and add new ones in an effort to get
+     finally rid off the recomputation warnings. This is successful
+     when SEAICE_VECTORIZE_LSR ***and*** SEAICE_LSR_ADJOINT_ITER are
+     defined (i.e. no extensive recomputation warnings left), but there
+     are still too many recomputations on the solver iteration level
+   - define SEAICE_VECTORISZE_LSR in offline_exf_seaice/code_ad/SEAICE_OPTIONS.h
+   - move definition of MPSEUDOTIMESTEPS into TAMC-block in
+     SEAICE_SIZE.h
+   - add a store directive in S/R seaice_calc_viscosities
+ o pkg/seaice (ITD code):
+   - fix definition of Hlimit for multi-threaded case
+   - use double precision arithmetic to compute Hlimit: this affects results;
+     update output of experiment seaice_itd.
+ o replace content of verification/seaice_itd
+   - instead of a 1D column use the configuration of offline_exf_seaice
+     to test the ice thickness distribution code with ridging
+   - this is a first shot at this experiment
+   - change of some defaults of ridging parameters SEAICEhStar (from
+to 25) and SEAICEmuRidging (from 5 to 3) in seaice_readparms.F
+     and lot of new comments.
+ checkpoint64y (2014/06/20)
+ o pkg/seaice/seaice_reg_ridge.F:
+   - modify the regularization of very small volumes of ice; only check
+     total volume HEFF, and do not apply correction to individual ice
+     classes because that leads to funny patterns in the heat and fw-fluxes
+     into the ocean. Adjust seaice_itd/results/output.txt
+   - replace nITD by SEAICE_multDim in loop-ranges
+ o pkg/exf:
+   - add code to process the case field period = -12. with UV interpolation.
+   - move debug print (formerly active when exf_verbose=T) from EXF_getFFieldRec
+     into S/R that calls it (i.e., exf_set_gen.F, exf_set_uv.F & obcs_exf_load.F)
+ o verification/global_with_exf:
+   - switch all fields period to -12. (was previously untested) in input/data.exf
+     (but keep secondary test ".yearly" unchanged); update the reference output.
+ o pkg/cal:
+   - new calendar type "noLeapYear" for 365 days calendar without any leap year.
+ o pkg/exf:
+   - new integer parameter "exf_debugLev" (default set to main model debugLevel)
+     to replace logical switch "exf_verbose"
+   - report in STDOUT when loading a new record (if exf_debugLev >= 3)
+ o pkg/sbo:
+   - update from Katherine Quinn: evaluate mass directly from density and SSH
+     (budget using Finite Volume method) instead of from bottom pressure.
+   - allow testreport to collect few selected SBO output ; tested in exp.
+     global_ocean.90x40x15 (after updating the results, to include SBO output).
+   - fix some multi-threading issues (in output part).
+ o model/src & most packages:
+   - always call {PKG}_READPARMS even if corresponding use{PKG}=F;
+   - in {PKG}_READPARMS, in case use{PKG}=F: add a call to new S/R
+     PACKAGES_UNUSED_MSG to print a weak warning when parameter file
+     "data.{pkg}" exist ; and leave the S/R (return) just after.
+   - more standard LAND pkg interface (land_init_fixed.F, land_check.F).
+     + call LAND_READPARMS from packages_readparms.F
+ o pkg/seaice:
+   - remove code that resets useThSice in S/R seaice_readparms and
+     replace it by a warning in S/R seaice_check
+   - remove parameter MULTDIM, replace with nITD and runtime
+     parameter SEAICE_multDim (still hard-wired to nITD if
+     SEAICE_ITD is defined)
+ checkpoint64x (2014/05/24)
+ o verification/lab_sea:
+   - update adjoint and TLM output following changes to pkg/salt_plume
+   - un-do the update after putting back local recip_Cp in few places.
+ o pkg/salt_plume: modifications by An Nguyen:
+   - add capability to do brine rejection (salt-plume) as function of
+     volume+tracers (instead of only salinity tracer).
+   - conserve volume by exchanging volume from each kLev to above to
+     accommodate in-coming brine volume
+   - store surface and klev exchanged fraction + volume in 4 new 3-d arrays
+   - switch KPP surf buoyancy due to brine forcing to 3-d
+     (3 more 3-d arrays, 2 for SPforcing[T,S], 1 for boplume)
+   - add salt_plume_volfrac, salt_plume_apply, salt_plume_tendency_apply_t
+   - unrelatedly, also add ad-hoc capability to vary salt_plume scheme
+     in East/West Arctic.
+ o pkg/sbo:
+   - incorporate modifications from Katherine Quinn to enable the use of sbo
+     pkg in ECCO-v4 set-up ; remove SBO-TimeAve output ; add monitor-like
+     output for future testreport verification (unfinished).
+ o pkg/atm_phys:
+   - change diagnostics (AtPh_Trf & AtPh_Qrf) of DARGAN_BETTSMILLER S/R:
+     skip the reseting of t_ref & q_ref to initial t & q ; this preserve the
+     output of S/R CAPECALCNEW (Parcel temp & q) for diagnostics.
+ o pkg/seaice
+   seaice_calc_ice_strength.F: modify expression to avoid divisions
+     (affects truncation)
+   seaice_do_ridging.F: clean up the insectarium
+   - fix a bug that was compensated by areaScaling (-> remove areaScaling code)
+   - added SEAICEsnowFracRidge to redistributed snow (2nd bug)
+   - set closing/openingRate to zero where no extra iteration is need (3rd bug)
+   - add some debugging information and error messages (warnings)
+ o model/src: modifications relatd to atmosphere p*:
+   - Switch to more accurate p* coordinate slope term (calc_grad_phi_hyd.F)
+   - With p* or Sigma-P, use constant reference Pot.Temp (thetaConst) instead
+     of vertical profile tRef in geopotential background and anomaly.
+   - Acount for true p* correction in theta <-> T conversion in pkg/aim_v23
+     and pkg/atm_phys.
+   - Update FWD output of experiments: aim.5l_cs (x2), fizhi-cs-32x32x40,
+     fizhi-cs-aqualev20, fizhi-gridalt-hs, tutorial_held_suarez_cs, cpl_aim+ocn.
+ o pkg/seaice: fix a bug in seaice_prepare_ridging.F, forgot a sqrt
+ o pkg/ptracers: compute ptracer source/sink due to linear free surface.
+     not used right now, but can be used in BGC packages to fix conservation.
+ o pkg/dic, pkg/gchem: move tracer_meanarea to gchem, so it can be used by
+     other packages too.
+ o pkg/seaice/seaice_calc_ice_strength.F: replace SEAICE_rhoSnow by
+     SEAICE_rhoIce in the Rothrock (1975)-type strength calculations (bug fix)
+ o model/src:
+   - since we have several heat capacity (even in model/src), define "recip_Cp"
+     as local variable (no longer in common block) to avoid any confusion.
+   - add thetaConst in PARAMS.h (to be used with pStar or sigma-P coords).
+ o pkg/exf:
+   - from Jeff Scott: add option (#define EXF_CALC_ATMRHO) to calculate local
+     air density as function of air Temp, Humidity and atm pressure.
+ checkpoint64w (2014/05/02)
+ o verification:
+   - update output_adm.txt files for experiment global_ocean.cs32x15 (seaice &
+     seaice_dynmix) and lab_sea (primary test & noseaicedyn): moving/changing
+     code from seaice_growth.F & seaice_advdiff.F to new ridging routines
+     seaice_reg_ridge.F seaice_do_ridging.F affects AD gradient
+     (down to 8-7 matching digits for global_ocean and 5-6 for lab_sea).
+ o model/src: for atmosphere in p* coords:
+   - store factor rStarFacC**atm_kappa (= pStarFacK) in common block
+   - implement more accurate p* coordinate slope term (in calc_grad_phi_hyd.F),
+     but not yet activated.
+ o pkg/seaice: fix restart problem for ITD with new ice strength parameterisation:
+   - move computation of opnWtrFrac = 1-AREA to before computing ice strength
+   - this changes the results (but not for any verification experiment, because
+     none tests this), but avoids having an extra field in the restart files
+ o pkg/seaice: remove global variable TICE (not needed)
+   - replace by TICES or local variable where necessary (cost_seaice_test,
+     seaice_diagnostics_state)
+   - move copying TICE to TICES from seaice_check_pickup to seaice_read_pickup
+   - use specific read/write routines for reading and writing individual leves
+     of a multilevel field
+ o pkg/ctrl & model/inc:
+   - move additional anomaly fields of control vars (related to options:
+      ALLOW_KAPGM_CONTROL, ALLOW_KAPREDI_CONTROL and ALLOW_BOTTOMDRAG_CONTROL)
+     from DYNVARS.h into new header file: CTRL_FIELDS.h
+ o pkg/seaice: some small modifications to the ridging code
+   - make fw2ObyRidge a global variable and add the freshwater flux to
+     seaice_growth
+   - pass actual thickness from seaice_prepare_ridging, so that it is
+     computed only in one place and compute it in the same way as in
+     seaice_growth
+   - initialise more fields in seaice_do_ridging that where cause floating
+     point exceptions over land
+ o pkg/seaice: preparations for ridging code and first real ridging code
+   - move most of "PART 1" of S/R seaice_growth into a new and separate
+     S/R seaice_reg_ridge that will both regularize the state variable after
+     advection call the actual ridging routine;
+   - requires to make 5 fields global fields: d_HEFFbyNEG,d_HSNWbyNEG,
+     d_AREAbyRLX,d_HEFFbyRLX,saltFluxAdjust;
+   - remove ridging code from seaice_advdiff
+   - clean up remaining part 1 of seaice_growth in an attempt to make it
+     more readable (this is probably subjective)
+   - call seaice_itd_redist once in the initialisation phase to have the initial
+     conditions in the correct category
+   - finally: add new ridging routine for ITD code
+ checkpoint64v (2014/04/11)
+ o pkg/ecco:
+   - add runtime parameters mdt[start,end]date[1,2]
+   - rename variable "tpmean" as "mdt" and "topexmeanfile" as "mdtdatfile"
+ o pkg/seaice:
+   - make deltaC a global variable, so that it can be used in ridging code
+   - first step towards ridging: introduce new routines that compute
+     ice strength based on ridging parameters
+   - add diagnostic for HSNOWITD
+   - add opnWtrFrac as a global variable (required for ridging scheme)
+ o pkg/salt_plume + pkg/seaice/seaice_growth.F
+   - add SALT_PLUME_IN_LEADS flag to activate pkg/salt_plume only when ice
+     AREA exceeds a threshold (code contributed by I.Fenty in 2011)
+ o verification/hs94.1x64x5:
+   - leave ALLOW_AUTODIFF_TAMC undefined in code_oad/AUTODIFF_OPTIONS.h
+   - do not use ECCO_CPPOPTIONS.h anymore for TAF & OpenAD Adjoint tests.
+ o autodiff:
+   - Start to include explicitly AUTODIFF_OPTIONS.h, COST_OPTIONS.h,
+     and CTRL_OPTIONS.h in src files (to enable to skip the ECCO_CPPOPTIONS.h)
+     For now, only in pkgs used in verification/hs94.1x64x5.
+   - Replace ALLOW_AUTODIFF_TAMC by ALLOW_AUTODIFF (except for tape/storage
+     which are specific to TAF/TAMC).
+   - Replace ALLOW_AUTODIFF_OPENAD by ALLOW_OPENAD:
+     since ALLOW_OPENAD is defined in PACKAGES_CONFIG.h (any time pkg/openad
+     is compiled), this simplifies/reduces which *_OPTIONS.h file to include.
+   - OpenAD: change Makefile to generate the appropriate AD_CONFIG.h when
+     building mitgcmuv_ad (make adAll).
+ o pkg/ecco:
+   - cost_gencost_seaicev4.F:
+      reformulate proxy cost as function of sst and local param SEAICE_freeze
+      change cost names from siv4-[sst,vol] to siv4-[deconc,exconc]
+   - add stop statement if old names siv4-[sst,vol] are used
+   - add snapshots + cost reports for atmospheric longwave
+   - remove factor 0.1 in front of wtau[u,v]
+   - replace never used flag ALLOW_TMI_COST_CONTRIBUTION with
+      ALLOW_TMI_SST_COST_CONTRIBUTION
+ o pkg/atm_phys:
+   - add some diagnostics for Short-wave and for convection S/R.
+ o pkg/seaice/seaice_growth:
+   - fix a bug in the lateral melt parameterization for SEAICE_ITD
+     in seaice_growth; tempFrz needs to be computed inside the i/j-loop
+   - rearrange loop order for better vector code in the same code block
+   - rewrite the floeDiameter formula to have fewer divisions
+   -  (miraculously) none of this changes the results of seaice_itd
+ o pkg/smooth:
+   - move param smooth2Ddiffnbt to pkg/ecco
+ o pkg/salt_plume:
+   - salt_plume_frac.F:
+      clean up local param names
+      reformulate (1-frac) to frac; original 1-frac was based on swfrac code
+ o pkg/rw:
+   - add RS version of S/R READ_MFLDS_LEV.
+ o pkg/streamice:
+   - fix the restart test by writing/reading pickup_streamice files.
+ o pkg/seaice:
+   - refine checks for jfnk-related parameters
+   - comment out if statement with SEAICEuseIMEX parameter as long as there
+     is no IMEX code to avoid confusion and surprises
+ checkpoint64u (2014/03/07)
+ o verification/MLAdjust:
+   - rename secondary test suffix:
+.leith  -> A4FlxF  + switch to flux-form & add side-drag
+.leithD -> AhFlxF  + switch to flux-form
+.smag   -> AhVrDv  (use Vorticity-Div. visc form) + add side-drag
+.leith  -> AhStTn  (use Strain-Tension visc form) + add side-drag
+ o pkg/mom_vecinv:
+   - remove unused arguments from S/R MOM_VI_HDISSIP & MOM_HDISSIP (as it used
+     to be before mom_calc_visc.F)
+   - skip the call to MOM_CALC_TENSION & MOM_CALC_STRAIN if not needed.
+   - add 2nd copy of vort3 & strain that knows about lateral BC (free/no slip):
+     this is simpler for the adjoint and for diagnostics.
+ o model/src + pkg/momentum:
+   - add input files for  2-D additional Western and Southern cell-edge wall
+      (e.g., to add "thin-wall" where it is =1).
+   - fix sideDrag option for thin-walls with Non-Lin Free-Surf
+     using 2nd hFacZ that is computed from initial (fix domain) hFac
+   - known limitations of thin wall implementation: not yet coded for sigma
+     coords; not working with CD-scheme neither.
+ o pkg/seaice:
+   - rename recently introduced parameters from (wrong name) AB to
+     BDF (backward difference time discretisation)
+   - retire runtime parameters SEAICEuseAB2, SEAICE_abEps
+ o tools/adjoint_options:
+   - remove setting of "OPENAD=true" (now set by command line "genmake2 -oad")
+ checkpoint64t (2014/02/01)
+ o pkg/ecco
+   - add compile flag ALLOW_GENCOST_TIMEVARY_WEIGHT in ECCO_OPTIONS.h and
+     runtime logical flag gencost_timevaryweight to read daily sea-ice sigma
+   - replace hard-coded record number and period which only work for monthly
+     with read-in runtime param that works for other periods (month,day,year)
+ o pkg/thsice
+   - corrected store directive fixes thsice adjoint gradient checks
+ o genmake2 & testreport:
+   - add genmake2 option "-oad" to generate a Makefile for OpenAD built and
+     in this case, use tools/adjoint_options/adjoint_oad as default AD optfile.
+     Update testreport accordingly. No need to set "export OPENAD=true"
+     in adjoint_options/adjoint_oad anymore (will be removed later).
+ o pkg/shelfice:
+   - put T & S shelfice forcing into model surfaceForcing_T,_S (for now,
+     only if SHELFICEboundaryLayer=F); Change model/src/external_forcing.F
+     so that surface forcing applies to k=kSurf if using pkg/shelfice.
+ o pkg/ctrl, pkg/grdchk, pkg/ecco:
+   - Changes to make GENARR more modular (i.e. invisible if not used)
+ o model/src/temp_integrate.F and salt_integrate.F
+   - re-include store directives that were removed on Dec 27th.
+ o model/src/external_forcing_surf.F
+   - add storage directives for EmPmR and PmEpR to avoid recomputation of
+     seaice_model in the adjoint that is problematic when seaice_model is
+     turned off in the adjoint. The resolved issue dated back to July when
+     EXTERNAL_FORCING_SURF call was moved.
+     Update global_ocean.cs32x15/*/output_adm.seaice_dynmix.txt accordingly.
+ o pkg/exf/exf_check.F
+   - fix a small bug again (originally found by Wentao Liu, now found again)
+   - streamline error output
+ o pkg/streamice and aim_v23:
+   - replace a few "_EXCH_XY_RL (" with "_EXCH_XY_RL(", so that
+     Apple's /usr/bin/cpp knows what to do:
+     Apple LLVM version 5.0 (clang-500.2.79) (based on LLVM 3.3svn)
+     Target: x86_64-apple-darwin13.0.0
+ checkpoint64s (2014/01/05)
+ o tools/adjoint_options:
+   - switch to fastopt.net TAF server (instead of default fastopt.de) for
+     AD optfiles adjoint_diva & adjoint_f95 (similar to adjoint_default).
+ o model/src:
+   - remove some unnecessary TAF storage directives in forward_step.F and
+     in dynamics.F (note: not always removed by TAF, e.g., double storage
+     of kappaRU,kappaRV in former version of dynamics.F).
+ o model/src & pkg/ptracers:
+   - call directly GAD_IMPLICIT_R & IMPLDIFF + DWNSLP_APPLY from temp_integrate.F
+     salt_integrate.F and ptracers_integrate.F (instead of from thermodynamics.F)
+     and remove ptracers_dwnslp_apply.F & ptracers_implicit.F
+   - call MATRIX_STORE_TENDENCY_EXP for each tracer (in ptracers_integrate.F)
+   - add fZon & fMer as output argument of S/R GAD_CALC_RHS.
+   - update TAF AD-output of experiments global_ocean.90x40x15 (13 for AD-grad).
+ o useSingleCpuInput separates single-CPU input from single-CPU output;
+     for now only implemented for in exf_interp_read.F
+ o verification/advect_xy:
+   - fix missing EXCH call in local version of ini_salt.F and update output.
+ o momentum diagnostics:
+   - fix which deltaT is used in Total-Tendency diagnostics.
+   - fix typo in diagnostics for momentum tendency from AB.
+ o pkg/seaice/seaice_lsr.F: fix an initialisation bug for the
+     SEAICE_VECTORIZE_LSR_ZEBRA option that lead to NaNs on a NEC-SX8
+ checkpoint64r (2013/12/08)
+ o verification/*/results:
+   - Update reference output of experiments that were passing with just 13 digits
+      (make it easier to detect future changes in results)
+ o model/src & pkg/ptracers:
+   - move calls to GAD_ADVECTION (Multi-Dim advection) from thermodynamics.F to
+     inside temp_integrate.F and salt_integrate.F and from ptracers_advection.F
+     to inside ptracers_integrate.F ; remove ptracers_advection.F
+ o coupling interface pkgs:
+     [atm_compon_interf, ocn_compon_interf & atm_ocn_coupler]
+   - change the config check to test the agreement of Ocean Depth
+     with ATM land/sea mask (instead of ATM orography);
+   - send to coupler the number of coupler time-steps to do for this run:
+     this allows to check for consistency and don't need anymore to be
+     specified in parameter file "data";
+   in coupler:
+   - check consistency of RunOff map versus Ocean Depth and ATM land/sea mask.
+   - improve report to log-file of config setting (pass log-file unit to few S/R)
+ o pkg/compon_communic:
+   - add coupling send/receive for non-tiled integer vector;
+   - add S/R to check and stop if any proc has an error (similar to
+     eesupp/src/stop_if_error.F but single thread and across Comm_World).
+ o pkg/exch2:
+   - in exch2*_get_rx[1,2]: use new list "W2_tileIndex" to replace search
+     through list of all tiles my proc owns.
+ o model/src:
+   - AUTODIFF only: in calc_adv_flow.F, recompute rTransKp (instead of copying
+     from rTrans) to simplify dependencies (no need to store rTrans anymore in
+     calling S/R); this affects AD results at machine truncation level:
+     update AD-output (TAF) of experiments: 1D_ocean_ice_column,
+     bottom_ctrl_5x5 & obcs_ctrl (12 digits for AD grad, same FWD grad).
+ o tools/build_options:
+   - simplify Warnings options (-ieee & -devel cases) in linux_amd64_gfortran
+ o coupling interface pkgs:
+     [compon_communic, atm_compon_interf & ocn_compon_interf]
+   - move declaration of local array "ibuf" out of header file "CPLR_SIG.h"
+     to each S/R that needs it; remove un-used variables.
+   - change component tile registration (cpl_register.F in both compon_interf
+     and mitcomponent_tile_register.F) to pass the full list of tiles
+     information (including bi,bj) in 1 vector (instead of in a bi,bj matrix).
+   - with pkg/exch2: adopt the same convention used for I/O to define mapping
+     towards coupler global array (unless W2_useE2ioLayOut=F):
+      a) can now use different tiling between atm & ocn comp.
+      b) no needs to modify the run-Off map when changing tiling (was needed
+         even if using the same tiling between atm & ocn).
+      c) will allow to run with blank-tiles in 1 component (e.g., for ocean
+         full land tiles); not yet tested.
+   - check for valid mapping from comp. tile to coupler global array
+   - improve report of tile registration results to log file.
+ o pkg/exch2:
+   - in eesupp/src/eeboot.F: move call to W2_EEBOOT before Coupler
+     tile-registration (CPL_REGISTER);
+   - activate (un-comment) definition and setting of "W2_tileIndex" list to
+     store the local bi,bj indices of each tile;
+   - also print bi,bj in local report to log file;
+   - fix pkg/debug/debug_cs_corner_uv.F for the case nSy > 1 (left from
+     Jun 2009 modif of pkg/exch2).
+ o testing on baudelaire:
+   - run 2 tests at a time: no significant slow down (since enough cpu) and
+     get the full set of test done earlier
+   - switch the ifort test to "-devel" ; run the OpenAD test everyday.
+ o model/src/thermodynamics.F and routines called from it:
+   - pkg/gmredi: gmredi_residual_flow.F (replacing gmredi_calc_uvflow.F &
+     gmredi_calc_wflow.F) to update eulerian velocity (input) into residual
+     velocity (outp) by adding bolus velocity.
+   - model/src: calc_adv_flow.F (replacing calc_common_factors.F) to compute
+     mass transport from velocity + lateral grid cell area
+   - rename calc_gt.F to temp_integrate.F (includes call to TIMESTEP_TRACER)
+   - rename calc_gs.F to salt_integrate.F (includes call to TIMESTEP_TRACER)
+  in thermodynamics.F
+   - remove k from thermodynamics.F and move it to temp_integrate.F
+     salt_integrate.F and ptracers_integrate.F (now done inside the tracer
+     loop).
+   - compute locally (in thermodynamics.F) 3-D velocity field that is used to
+     advect tracers; pass it as argument to GAD_ADVECTION, GAD_SOM_ADVECT,
+     PTRACERS_ADVECTION, TEMP_INTEGRATE, SALT_INTEGRATE, PTRACERS_INTEGRATE,
+     GAD_IMPLICIT_R and PTRACERS_IMPLICIT
+   - update AD-output (TAF & OAD) of experiments: 1D_ocean_ice_column,
+     global_ocean.90x40x15, tutorial_global_oce_biogeo and
+     tutorial_tracer_adjsens (+ TLM output).
+ o tools/OAD_support and (verification/*/) code_oad:
+   - OAD_support/cb2mGetModules.csh: add PACKAGES_CONFIG.h in header file to
+     module conversion ; remove unneeded CPP_EEOPTIONS.h.
+   - code_oad/CPP_OPTIONS.h: remove PACKAGES_CONFIG.h and use a more standard
+     version (closer to model/inc/CPP_OPTIONS.h).
+ o model/src:
+   - remove parameter "useOldFreezing" from PARAMS.h and push it to the
+     retired list of parameters (routine FREEZE has been replace by surface
+     freezing (10.yrs ago) and by pkg/frazil (interior freezing).
+ o pkg/gmredi:
+   - add option (GM_CALC_TRANSP_FROM_VEL) to compute transport directly from
+     velocity (same scheme but affects machine truncation) for GM_AdvForm.
+   - update output of FWD experiments: front_relax.bvp,
+     global_ocean.90x40x15.dwnslp, global_ocean.cs32x15 and ideal_2D_oce.
+ checkpoint64q (2013/11/17)
+ o verification:
+   - generate new output on baudelaire (gfortran, -ieee) for OpenAD experiments
+     tutorial_global_oce_biogeo and global_ocean.90x40x15.
+   - generate new output (growth & melt) for seaice_itd experiment after
+     updating the input pickup_seaice files (previously wrong).
+ o pkg/cost:
+   - define a "final cost function" for each tile, and use GLOBAL_SUM_TILE_RL
+     (instead of _GLOBAL_SUM_RL) to get the final cost from all procs & threads:
+     o this fixes global-sum value if multi-threads (since GLOBAL_SUM_RL
+       cannot be applied to var in common block).
+     o allows to get results independent of tile-per-proc setting (if using
+       slower GLOBAL_SUM_SEND_RECV option).
+   - update accordingly: seaice_cost_final.F, shelfice_cost_final.F,
+     thsice_cost_final.F and ecco_cost_final.F (this one affects lab_sea
+     forward gradients: update output).
+   - update */code_oad/externalDummies.F by adding dummy GLOBAL_SUM_TILE_RL
+     S/R and, for most exp., also comment out GLOBAL_SUM_R8.
+ o pkg/mom_common:
+   - move to pkg/mom_common and model/src (previously in tutorial_deep_convection
+     code) 2nd version of isotropic 3-D Smagorinsky code interface: strain and
+     viscosity are locally declared in dynmics.F and pass as argument to CALC_GW;
+     ensure that all field value that are used are set.
+ o tutorial_deep_convection (smag3d):
+   - add missing scaling in mom_calc_smag_3d.F;
+   - set smag3D_coeff in input.smag3d such that results do not change.
+ o pkg/dic:
+   - change dic_cost.F to compute cost on each tile first and then apply
+     GLOBAL_SUM_TILE_RL: this affects forward gradient of AD experiments
+     tutorial_dic_adjoffline & tutorial_global_oce_biogeo; update output.
+   - remove kLev argument and use GLOBAL_SUM_TILE_RL in tracer_meanarea.
+ o eesupp/src & pkg/mdsio:
+   - remove gather/scatter_vector.F (from eesupp) and mdsio_read/writevector.F
+     (from pkg/mdsio) since they are no longer used for tape IO.
+   - move simple C subroutine "setdir.c" from pkg/compon_communic to eesupp/src
+     (+ keep a copy in pkg/atm_ocn_coupler).
+ o verification/isomip:
+   - split domain in 8 squared tiles (instead of just 2) for FWD, AD & OAD tests.
+ o tools/build_options:
+   - optfile linux_amd64_ifort11, fast (no ieee) case:
+     to get a working restart for all experiments, add "-fp-model source"
+     to FOPTIM (also remove "-opt-streaming-stores auto" <- this is the default).
+ checkpoint64p (2013/10/20)
+ o pkg/autodiff:
+   - adread_adwrite.F: when type and length do not match ALLOW_AUTODIFF_WHTAPEIO
+     criteria, return to simple (default) tape IO format.
+ o pkg/mdsio (+ eesupp/src):
+   - rewrite/simplify tape-IO S/R (new S/R MDS_READ/WRITE_TAPE replace
+     previous MDSREAD/WRITEVECTOR) with 2 array argument from each type (R4/R8);
+   - fix globalFile and singleCpuIO options using simpler global mapping.
+   - new pairs of scatter/gather vector S/R (one for each type, generated from
+     template) corresponding to simpler global mapping.
+   - adread_write.F: switch to new S/R (but leave old calls commented) and write
+     to globalFile when parameter globalFiles is set to True.
+   - switch on useSingleCpuIO in AD experiments: global_ocean.90x40x15 & isomip.
+ o pkg/autodiff:
+   - adread_adwrite.F: add a hack for RS arrays (when RS=real*4);
+     with ALLOW_AUTODIFF_WHTAPEIO defined, since corresponding (real*4) is
+     missing, just add a STOP if array type do not match.
+ o pkg/exf:
+   - to allow to use seaice-fraction from pkg/exf in other pkgs than pkg/seaice:
+      rename CPP option EXF_ALLOW_SEAICE_RELAX to EXF_SEAICE_FRACTION
+      and rename array obsSIce to exf_iceFraction.
+ o tutorial_deep_convection:
+   - add 1rst version of isotropic 3-D Smagorinsky code (from Louis-Philippe),
+     for now all in this exp. code dir.
+   - add secondary test using Smag-3D viscosity (keep very low backgroud visc for
+     testing) and flux-limter advection scheme for Temp. (no explicit diffusion).
+ o eesupp/src:
+   - added SINGLE_DISK_IO option because reading of parameter files on
+     very large number of processors did not work with existing set-up
+ checkpoint64o (2013/09/25)
+ o pkg/atm_phys & atm_compon_interf:
+   - allows for coupling of gray-atmosphere (atm_phys) with ocean.
+ o tools/build_options:
+   - switch from "-fPIC" to "-mcmodel=medium" in optfiles: linux_amd64_gfortran
+     & linux_amd64_ifort11 and in linux_amd64_g77 & linux_amd64_open64 also
+     remove CPP setting (was identical to genmake2 default).
+ o pkg/gmredi & model/src: Some updating and work done on the residual model.
+   - created new file model/src/calc_eddy_stress.F to calculate the eddy stress.
+   - fixed up the calculation of the eddy stress and how it is added to the
+     external forcing via taueddy_external_forcing.F
+   - at the moment, it is very experimental and only works with the variable eddy
+     diffusivity calculated in gmredi_k3d.F
+ o pkg/seaice/seaice_check.F: add a check to catch the case of specifying
+     lw/swfluxfile instead of lw/swdownfile in data.exf together with pkg/seaice
+ o testreport (& tools/do_tst_2+2):
+   - for MPI test, set default COMMAND to 'mpirun -v -np TR_NPROC ./{executable}'
+ o tools/build_options: linux_amd64_gfortran & linux_amd64_ifort11:
+   - remove CPP='cpp -traditional -P' (this is genmake2 default)
+   - add switch (for big setups) to use 'medium' memory-model (but leave it
+     commented out for now). Note: needed with FC 19 to compile big setups.
+ o pkg/atm_compon_interf:
+   - regroup per field origin (model & pkgs) the coupling storage routines
+      (which accumalate in time each coupling field)
+   - move bi,bj loops inside atm_store_my_data.F and store also wind-stress;
+     update accordingly + simplify aim_do_physics.F
+ checkpoint64n (2013/08/26)
+ o pkg/bbl:
+   - update formulation to reduce dispersion of tracer properties in bbl
+   - replaced horizontal and vertical transport parameters with velocities
+   - changes results for verification/global_with_exf.yearly
+ o verification/halfpipe_streamice:
+   - change to matrix construction; update both Fwd & AD output.
+ o verification/tutorial_tracer_adjsens:
+   - OpenAD test: switch to vector-invariant momentum since fluxform with
+     rStar causes problems with OpenAD; update output.
+ o tools:
+   - genmake2: define a common prefix for all temp-file names ; move them
+     to local /tmp disk (but would be easy to move them back);
+   - xmakedepend: apply the same switch for temp-files.
+ o pkg/offline:
+   - changes for use with rStar (NLFS): assume that we continue to provide
+     UVELMASS/hFacW_ini & VVELMASS/hFacS_ini (hFacWi,S_ini as written in grid
+     output files) and apply r* scaling at each time-step (function of the time
+     varying Eta field); use normal pickup files (needed for restart with NLFS).
+ o adjoint with OpenAD:
+   - move OpenAD-specific files from verification/OpenAD/code_oad_all to a new
+     package openad.  This package has to be compiled for all runs with OpenAD
+     instead of specifying code_oad_all as a modification directory.
+   - link the fortran templates from tools/OAD_support to the build directory
+     for preprocessing to avoid conflicts between different setups compiled
+     simultaneously and simplify cleanup.
+ o pkg/exf:
+   - in exf_getforcing.F: comment out most of the EXCH calls (fields used by
+     main model or other pkgs are exchanged in EXF_MAPFIELDS).
+ o model/src:
+   - do_stagger_fields_exchanges.F: skip EXCH calls when using pkg/offline
+     (similar to do_fields_blocking_exchanges.F).
+ o tools/genmake2:
+   - remove TAF output src code just before calling staf (when not doing a fresh
+     built, will stop if things go wrong with staf).
+   - fix target "adobj" (left from TAF version-2 transition)
+ o pkg/diagnostics:
+   - add a parameter to track the status of pkg/diagnostics activation;
+     this replace/extend the use of logical param "settingDiags" (to check
+     when adding diag to the list) to also check any DIAGNOSTICS_[]FILL* call.
+     New S/R to print error message and stop when pkgStatus is not right.
+   - to try: add a warning when "data.diagnostics" exist but useDiagnostics=F.
+ checkpoint64m (2013/08/13)
+ o model/inc:
+   - move FCORI_MACROS.h from PARAMS(_MACROS).h to GRID_MACROS.h (left from
+yrs ago modif when Coriolis arrays were moved from PARAMS.h to GRID.h)
+ o pkg/kpp & aim_v23:
+   - only call DIAGNOSTICS_FILL when useDiagnostics=TRUE.
+ o pkg/seaice:
+   - restore (last time on 2011/12/24) ability to compile pkg/seaice with
+     undefined pkg/exf ALLOW_ATM_TEMP or ALLOW_RUNOFF CPP-options.
+   - only call DIAGNOSTICS_FILL when useDiagnostics=TRUE.
+ o eesupp/src:
+   - fix check for overlap-size argument (myOLn.GT.MAX_OLY_EXCH)
+     in exch1_rx[_ad].template (thanks to Francois Lefeuvre report).
+ o switch to TAF version-2:
+   - add flow directives to "freeze" naming convention for ad-routines that
+     are used in I/O routines of adjoint state and associated common blocks
+     that are used in adcommon.h (backward compatible with version-1)
+   - update all ad-optfiles (in tools/adjoint_options + few local to some
+     verification exp) to switch to latest TAF version (currently 2.5.5);
+     merge "*_mpi" adoptfiles into the corresponding non-mpi (but commented
+     out except for diva).
+   - the major change with TAF version-2 is that both the differentiated
+     routines and the forward routines (new) are returned as part of the TAF
+     output source code. Update genmake2 accordingly.
+   - new output for AD experiment tutorial_global_oce_biogeo (better AD gradient
+     with version-2 when compared to TLM or FWD gradient); other experiments
+     output show minor changes (machine truncation level); update the few AD &
+     TLM output with 12 matching digits only (some prior to version-2 switch).
+ checkpoint64l (2013/08/05)
+ o model/src:
+   - in dynamics.F, skip the call to CALC_VISCOSITY if momViscosity=F
+   - main_do_loop.F: no longer includes additional (AUTODIFF) header files
+     when using TAF but only if using OpenAD.
+ o pkg/mom_common+fluxform+vecinv:
+   - always set horiz. viscosity arrays to background value before calling
+     MOM_CALC_VISC (in MOM_FLUXFORM & MOM_VECINV) and call S/R MOM_CALC_VISC
+     only when using variable horiz. viscosity (useVariableVisc=T);
+   - simplify mom_vecinv.F (only 1 block for momViscosity).
+ o pkg/mom_common: variable horiz. viscosity in NH code
+   - move horiz-viscosity 3-D arrays viscAh_W & viscA4_W (used in calc_gw.F)
+     from model/inc/NH_VARS.h to pkg/mom_common/MOM_VISC.h
+   - store in common block (in MOM_VISC.h) logical parameters: useHarmonicVisc,
+     useBiharmonicVisc & useVariableVisc.
+   - fix old bug (already in 1rst implementation of variable horizontal viscosity
+     in calc_gw.F, version 1.27, 2006/06/20):
+     horizontal bi-harmonic viscosity in gW was missing when wiscA4W=0
+     even if variable bi-harmonic viscosity (e.g., viscA4Grid) was non-zero.
+   - change background horiz viscosity in vertical momentum (gW) to always be
+     viscAhW,viscA4W (instead of switching to viscAhD, viscA4D when using
+     any type of variable viscosity, e.g., viscAh/4Grid)
+   - change default value of viscAhW,viscA4W to viscAhD,viscA4D (instead of
+     viscAh,viscA4) which default to viscAh,viscA4 :  this avoid missing
+     horiz. viscosity in W eq when just setting viscAhD/Z,viscA4D/Z (since
+     default viscAh,viscA4 is zero).
+ o model/src:
+   - extend length of drC & recip_drC from Nr to Nr+1.
+ o Divided Adjoint (DIVA) with MPI:
+   - genmake2: do not create local ./mpi_headers dir when no file to copy into.
+   - remove option ALLOW_DIVIDED_ADJOINT_MPI (replaced by ALLOW_DIVIDED_ADJOINT
+     and ALLOW_USE_MPI) from model/src code and from ECCO_CPPOPTIONS.h.
+ checkpoint64k (2013/07/23)
+ o tools/OAD_support:
+   - avoid the need for file "oadtempflile" in insertTemplateDir.bash
+     and remove it from genmake2.
+ o tools/build_options:
+   - remove MPI_HEADER_FILES_INC setting (no longer used) and comment out
+     MPI_HEADER_FILES list (let genmake2 find the missing headers)
+ o verification/halfpipe_streamice:
+   - change to driving stress formulation; update both Fwd & AD output.
+ o tools/genmake2 and Divided Adjoint with MPI:
+   - remove default setting of MPIINCLUDEDIR from $MPIHOME (always been broken);
+   - only create local ./mpi_headers dir if using MPI and MPIINCLUDEDIR is set;
+   - add new variable (LOCAL_MPI_HEADERS, replace MPI_HEADER_FILES_INC) in
+     Makefile, which is set by genmake2, and check which mpi-headers are needed.
+     Note: need to update adjoint_options/adjoint_diva_mpi accordingly.
+   - update target "CLEAN" (to also remove ./mpi_headers/ dir).
+ o testreport:
+   - changes for Divided Adjoint Run: when file "run_ADM_DIVA" is present,
+     perform additional runs (number of additional runs is "add_DIVA_runs" taken
+     from file run_ADM_DIVA ; should match "nchklev_3" in file "code_ad/tamc.h").
+ o verification/lab_sea (AD test):
+   - change to test Divided Adjoint Run in this set-up (both standard AD test
+     and 2 secondary AD test: noseaice + noseaicedyn); drop the evp AD test.
+ o pkg atm_ & ocn_compon_interf:
+   - remove cpl_earlyExpImpCall=F option (was mainly a hack added for the old
+     staggerTimeStep implementation) and disable (retired) corresponding
+     parameter.
+ o pkg/offline:
+   - comment out unused field-array: ICEM, ConvectCount, hflx[01], icem[01];
+   - add S/R OFFLINE_CHECK to print offline parameter summary
+     and stop if loading a file that is not used;
+   - enable to calculate GMRedi tensor, KPP mixing and convective index
+     when the corresponding file(s) is/are not specified (but pkg is used).
+   - comment out resetting of monitorFreq (to endTime) since it still useful
+     for monitoring CFL numbers and checking offline fields.
+ o OpenAD:
+   - do not define OAD_DEBUG (in tools/adjoint_options/adjoint_oad) to get
+     smaller standard output) and generate new (smaller) output (on baudelaire
+     using gfortran with -ieee) for exp. tutorial_tracer_adjsens
+ o model/src:
+   - call EXTERNAL_FORCING_SURF outside bi,bj loops (in do_oceanic_phys.F),
+     (where external_forcing_adjust was called) and change list of arguments;
+   - merge external_forcing_adjust.F into external_forcing_surf.F
+   - put surface relaxation of SST & SSS in new S/R (forcing_surf_relax.F)
+     which also contains balancing surface relaxation (ALLOW_BALANCE_RELAX,
+     previously in file "balance_relax.F", now removed); remove corresponding
+     arrays in FFIELDS.h.
+   - EXTERNAL_FORCING_SURF is now called when using pkg/offline; implement
+     a hack for getting back surfaceForcingS (loaded from file) when using
+     ALLOW_OLD_VIRTUALFLUX (pkg/dic, in DIC_OPTIONS.h) in offline set-up.
+   - update output of AD test experiment global_ocean.cs32x15.seaice_dynmix
+     (was getting only 11 digits for AD-grad, due to different truncation
+      error in AD code).
+ checkpoint64j (2013/07/04)
+ o pkg/offline:
+   - to enable the use of other features with pkg offline (e.g., obcs),
+     also call S/R DO_OCEANIC_PHYS in offline run - more modifs to come.
+   - comment out "allowFreezing" (now active) in 2 offline testing exp.
+ o pkg/exf ALLOW_RUNOFTEMP
+   - fix sign and make compatible with temp_EvPrRn .NE. UNSET_RL
+   - ahdded RUNOFTEMP test to verification/global_ocean.cs32x15/input.seaice
+   - changes verification/global_ocean.cs32x15/results/output.seaice.txt
+ o pkg/atm_phys:
+   - allows to add some damping on uVel,vVel (strength only function of k).
+ o verification, ad-tests:
+   - reduce length of the simulation for AD test: global_ocean.cs32x15.seaice,
+     global_ocean_ebm and offline_exf_seaice.thsice.
+ o verification/halfpipe_streamice:
+   - found a bug in s/r pkg/streamice/streamice_advect_thickness which caused
+     flux input boundary conditions to be ignored; a fix for this bug changed
+     verification results for forward test.
+   - add adjoint test.
+ o pkg/ptracers:
+   - allow to restart without SOM pickup (resetting SOM to zero).
+ o pkg/gmredi:
+   - New parameterisation for the calculation of K and (GM_PsiX,GM_PsiY) added.
+   - It uses mixing length theory and suppression by steering level effects to
+     calculate a diffusivity used in the Redi tensor (see Bates et al., submitted
+     to JPO, for more details).
+   - It also uses the diffusivity to calculate an eddy induced streamfunction
+     based on a PV closure (rather than a buoyancy closure as in GM).
+   - New files added to pkg/gmredi:
+     gmredi_k3d.F calculates the diffusivity for the Redi tensor and the eddy
+       induced overturning streamfunction (called from gmredi_calc_tensor)
+     gmredi_calc_eigs.F calculates the eigenvalues and eigenvectors required
+       for use in gmredi_k3d
+     gmredi_calc_urms.F calculates the the rms eddy velocity used to calculate
+       the eddy diffusivity
+ checkpoint64i (2013/06/18)
+ o pkg/cheapaml:
+   - take src files from MITgcm_contrib/verification_other/offline_cheapaml/code
+     that enable the use of seaice (pkg/thsice thermo & pkg/seaice dynamics)
+     with pkg/cheapaml.
+ o utils/python: add subpackage for cubed sphere function, first example is
+     simple cs.pcol to plot 2D fields on a map
+ o pkg/streamice:
+   - This is a new package in MITgcm, which solves dynamic equations for ice
+      sheets and ice streams
+   - At the moment it is independent of atmosphere/ocean dynamics, or any
+     other physical packages in MITgcm, even ShelfIce (although it is anticipat-
+     ed that this will change)
+   - There is a new verification exercise that tests it, halfpipe_streamice,
+     evolves a 40x80 km ice stream/ice shelf (at coarse resolution) in a
+     rectangular embayment
+   - halfpipe_streamice is forward-only for now, will have TAF test soon
+   - for questions, email dgoldber@mit.edu
+ o pkg/thsice:
+   - fix filling of snow-precip diagnostic (SIsnwPrc) (left from the removing
+     of snowPrc from common bloc, on May 2nd, thsice_step_fwd.F revision 1.40);
+   - remove diagnostics 'SI_FrcFx' ( now identical to 'SI_Fract' with new
+      call sequence: ice-Thermo(thsice),ice-Dyn,ice-Advect );
+   - allow precip from pkg/cheapaml to make snow over seaice.
+ o pkg/cfc:
+   - move in separated header file (CFC_ATMOS.h) time-serie arrays of Atmos CFC
+   - remove atmos CFC 2-D arrays from common bloc (now local variables)
+   - change some hard-coded constant to run time parameter for reading and
+     and interpolating atmospheric CFC ; keep same default as previously.
+   - more flexible reading of Atmos CFC (number of records no longer hard-coded)
+   - put arguments in standard order: myTime, myIter, myThid
+   - use standard S/R GET_PERIODIC_INTERVAL for time interpolation of
+     atmospheric CFC ; fix for the case myIter < PTRACERS_iter0.
+   - fix calculation of surf tendencys for partial-cell and/or Non-Lin Free-Surf
+   - new routine to print summary of CFC params and check for consistency.
+ o pkg/seaice: add uice/vice to the parameter list of s/r seaice_advdiff,
+   similar to thsice_advdiff.
+   Note that for the B-grid case the routine parameters uc/vc are overwritten.
+ o pkg/cfc:
+   - change time interpolation for atmospheric CFC-11 (now same as for CFC-12);
+     update output (CFC-11) of experiment cfc_example and tutorial_cfc_offline.
+   - fix interpolation of atmphspheric CFC between Sorthern and Northern
+     hemisphere value.
+ o pkg/seaice:
+   - allow to use seaice dynamics without pkg/exf (e.g., using pkg/cheapaml)
+ o pkg/seaice: add Adams-Bashforth2 time discretization for ice dynamics;
+               so far only for JFNK-solver, turn on with SEAICEuseAB2 = .TRUE.
+   - requires an additional time level that is stored in the pickup
+   - you can start with AB2 from a pickup without this time level with
+     pickupStrictlyMatch = .false.
+ checkpoint64h (2013/05/26)
+ o pkg/cheapaml:
+   - replace one ()**.5 with SQRT + use temp var "cdu = tau/Du" (coare3_flux);
+     affect machine truncation (but exp cheapAML_box still pass with 13 digits).
+   - consistent treatment of uWind,vWind location: assume everywhere in
+     pkg/cheapaml that they are on C-grid (@ uVel,vVel location)
+     (Note: was already the case for Tair,Qair advection);
+     add option (INCONSISTENT_WIND_LOCATION) to recover old results.
+   - compute diabatic forcing only in the interior (excluding overlap regions)
+   - fill in array "Qsw" (for short-wave heating);
+   - add diagnostic for precip ; fill-in diagnostics for cheapAML state vars
+     before any update (consistent with MITgcm state var diagnostics);
+   - cheapaml_fields_load.F & cheapaml_init_varia.F : only fill outer edges if
+     non periodic ; + adjusted for uWind,vWind (C-grid).
+ o pkg/seaice:
+   - remove dependence of pkg/seaice versus pkg/exf (file: pkg/pkg_depend) and
+     add explicitly pkg/exf in experiments that currently use pkg/seaice.
+   - allows to compile pkg/seaice without pkg/exf.
+ o tools/OAD_support:
+   - use a local copy (ourRWCPinBd) to ensure index ourRWCP stays within bounds
+     of array "ourStepOf" in function rvNextAction (revolve.F90).
+ o pkg/aim_compon_interf renamed to pkg/atm_compon_interf
+   - change pkg name (to be used with other atmospheric physics pkg)
+     but by-pass CVS when making the new pkg so that we keep the CVS history.
+ o pkg/offline:
+   - call OFFLINE_FIELDS_LOAD from pkg/offline/offline_init_varia.F
+     (previously called from pkg/dic_surfforcing_init.F)
+ o model/src:
+   - re-order sequence of calls within packages_init_variables.F, using
+     standard order, except for:
+      DIAGNOSTICS_INIT_VARIA and OFFLINE_INIT_VARIA (called @ the top),
+      CTRL_MAP_INI and OBCS_INIT_VARIABLES (called @ the bottom)
+ o new pkg: atm_phys
+   - add entry point and source code (previously in contrib
+       verification_other/atm_gray/code_gray/) for new pkg "atm_phys"
+     (atmospheric physics pkg from P. O'Gorman and T. Schneider, JCl, 2008).
+   - re-order sequence of calls within packages_readparms.F,
+      packages_init_fixed.F and packages_write_pickup.F
+     (but skip packages_init_variables.F because of TAF issues).
+   - update contrib/*/atm_gray/ experiment.
+ o pkg/seaice (ITD code):
+   - simplify and fix the writing of pickup-files for ITD case
+ o pkg/seaice (ITD code):
+   - introduce floe size dependent lateral melt for ITD case;
+   - cleaning (avoid division by zero, change to f77 syntax, remove tabs)
+   - update seaice_itd experiment main output.
+ o pkg/thsice:
+   - remove snowPrc from common block THSICE_FLUX, in THSICE_VARS.h and
+     declared it locally (without bi,bj) in thsice_main.F & aim_do_physics.F;
+     changed accordingly pkg/atm2d.
+ checkpoint64g (2013/05/01)
+ o pkg/exf ALLOW_RUNOFTEMP
+   - if defined,  river and glacier runoff temperature can be read-in from
+     runoftempfile; runoftempfile needs to have same format as runofffile
+ o pkg/thsice (& pkg/bulk_force):
+   - In case Energy-Reference-Level (ERL) is used (temp_EvPrRn=0), account
+     for energy content of Precip + RunOff & Evap (like with pkg/exf).
+   - change computation domain to always be the interior (without overlap).
+   - fix bug (wrong overlap) when using EXF and stressReduction > 0.
+ o verification/tutorial_global_oce_biogeo:
+   - add preliminary OpenAD setup (still has problems)
+ o pkg/seaice:
+   - turn some parameters for choosing the convergence criterion of
+     the inexact Newton method (JFNK) into runtime parameters for convenience
+   - clean up seaice_calc_viscosities.F: remove/retire two options for
+     SEAICetaZmethod (1,2), introduce area weighting for method 3; this changes
+     the results of lab_sea/input because a division has been replaced by
+     a multiplication with the reciprocal (sumNorm)
+   - modify offline_exf_seaice/input.dyn_jfnk/data.seaice to improve
+     convergence of solver (changes results, of course), and to test some
+     new features
+ o model/src:
+   - remove unused (since Aug 2006) S/R SET_WRITE_GLOBAL_PICKUP and its call.
+   - remove unused forcing field "dQdT" and associated parameter "dQdTFile".
+   - move forcing adjustment (balancing surface forcing) in specific S/R
+     where might also be applied exchanges (if needed) to forcing arrays.
+ o pkg/shelfice:
+   - allow to specify the Ice-Shelf mass per unit area (instead of
+     shelficeLoadAnomaly) and do the conversion from one to the other
+   - move loading from file of shelficeLoadAnomaly from SHELFICE_INIT_VARIA
+     to SHELFICE_INIT_FIXED: (a) avoid some TAF recompution issues and
+     (b) will be loaded in time (before calling INI_PRESSURE) in case it is
+     needed in phi0surf for initial pressure calculation when useDynP_inEos_Zc
+   - update isomip experiment forward output (get machine truncation error
+     from conversion shelficeLoadAnomaly -> shelficeMass -> shelficeLoadAnomaly)
+ o verification/offline_exf_seaice:
+   revise data.seaice in input.thermo and input_ad and update results accordingly
+     HO = 0.2, SEAICE_areaLossFormula = 2,
+     SEAICE_growMeltByConv = .TRUE.,
+     SEAICE_doOpenWaterMelt = .TRUE.,
+   Improve consistency with input.thsice and fix the spurious 500m ice corners
+ o verification/global_ocean.cs32x15:
+   - set Energy Reference Level to liq. water @ 0 degC: temp_EvPrRn=0.,
+     in icedyn (thsice+seaice-dyn) test and update output.
+ o verification/offline_exf_seaice:
+   - adjust list of tested variables (with testreport) and update
+     standard test output with better slection of monitored fields.
+ o pkg/cd_code:
+   - swtich off Adams-Bashforth on the 1rst iteration. Update output of
+     experiment lab_sea.hb87
+ o tools/genmake2:
+   - change default makedepend from the system default to tools/xmakedepend:
+     When no makedepend is specified, select tools/xmakedepend it the test pass,
+     otherwise select the system default (if exist and pass the test) or
+     try to build cyrus-makedepend ; stop if none of the 3 works.
+ o pkg/exf & pkg/thsice:
+   - In case Energy-Reference-Level (ERL) is used (temp_EvPrRn=0), account
+     for energy content of Precip + RunOff & Evap. Assumes:
+) Rain has same temp as Air.
+) Snow has no heat capacity (consistent with seaice & thsice pkgs)
+) Run-Off comes at the temp of surface water (with same Cp)
+) Evap over ocean is released to the Atmos @ surf-temp (=SST); should be
+     put directly into Latent Heat flux & should use water-vapor heat capacity.
+) Evap over snow/seaice (pkg/thsice) assumes constant Lf+Lv (consistent
+     with snow having no Cp) => water vapor is released to Atmos @ 0^oC (=ERL).
+ o pkg/seaice: simplify the use of CPP flags in JFNK-related files
+     (compile when SEAICE_ALLOW_JFNK is defined)
+ o pkg/thsice:
+   - fix oceanic flux diagnostics & timeave (left from new sequence of calls
+     implementation): move THSICE_AVE call after the advection (called directly
+     from thsice_do_advect.F).
+ o verification/global_ocean.90x40x15 and OpenAD:
+   New experiment for OpenAD is identical to the one in input_ad except that
+     multiDimAdvection=.FALSE.,
+   There is still an issue with this.
+ o pkg/thsice:
+   - account for ice velocity (ocean relative velocity) in turbulent heat flux
+     at the base of the ice; update output of global_ocean.cs32x15 (icedyn)
+     and offline_exf_seaice (main test).
+ checkpoint64f (2013/03/31)
+ o verification/OpenAD:
+   - new (smaller, without OAD_DEBUG) output_oadm.txt generated using gfortran.
+ o verification/isomip, pkg/shelfice and OpenAD:
+   - add OpenAD setup to this exp and make shelfice package work with OpenAD
+ o verification/tutorial_global_oce_biogeo:
+   - update AD and TLM output after turning off ALLOW_FE (in DIC_OPTIONS.h)
+ o verification/offline_exf_seaice:
+   - replace adjoint experiment (now similar to fwd input.thermo/ setup).
+ o verification/tutorial_tracer_adjsens, pkg/ptracers and OpenAD:
+   - add OpenAD setup to this exp and make ptracers package work with OpenAD
+ o pkg/seaice/seaice_evp.F:
+    mask the asymmetric contribution of the ice-ocean stress (when
+    the turningAngle is non-zero) over open water to avoid stripes
+    in the EVP-solutions after many EVP-substeps. This does not change
+    the verification experiment (because turningAngle=0 in that experiment),
+    but will affect other EVP solutions with turningAngle.ne.0
+ o verification, AD & TLM output:
+   - new TAF version 2.3.10 (previously 2.3.8) add more parenthesis in multiple
+     additions and multiplications which affect results at machine truncation
+     level. Update few AD output (1D_ocean_ice_column, bottom_ctrl_5x5,
+     lab_sea.noseaicedyn & offline_exf_seaice) and TLM output
+     (1D_ocean_ice_column & tutorial_tracer_adjsens.som81) which had only 12
+     digits of matching.
+ o pkg/seaice:
+    modify lsr-algorithm so that it vectorizes AND converges by using a
+    "zebra" method: split vector loop into two with step size 2; this
+    solves a general convergence problem for the JFNK solver on a vector
+    computer. It has the potential to even improve convergence for
+    non-vector machines, but it does change the results so it is turned
+    off by default. To turn on define CPP-flags SEAICE_VECTORIZE_LSR and
+    SEAICE_VECTORIZE_LSR_ZEBRA in SEAICE_OPTIONS.h
+ checkpoint64e (2013/03/05)
+ o pkg/ecco and several verification experiments:
+    Remove special versions of the_model_main.F, the_main_loop.F, forward_step.F
+    from ecco package, and revert to unified routine in model/src/
+    Adjust verification experiments accordingly, especially gloal_oce_llc90
+    Should conclude long-standing work by Gael to reconsile the_main_loop with
+    ECCO and will enable OpenAD's revolve loop in ECCO setup.
+ o pkg/generic_advdiff:
+   - implement compressible flow method for multi-dim advection (similar to
+     gad_som_advect.F); add new option "GAD_MULTIDIM_COMPRESSIBLE" (since
+     TAF generates many recomputations) to use it; no yet coded with implicit
+     vertical advection.
+   - change experiment advect_cs (new output) and advect_xy (same output)
+     to test compressible flow multi-dim advection.
+ o pkg/generic_advdiff:
+   - fix SOM advection for unusual cases (linear Free-Surf in r*, other
+     cases where linear Free-Surf is not @ k=1, e.g., useShelfIce)
+ o pkg/seaice:
+   - fix bug in the no-slip implementation in seaice_calc_strainrates.F, this
+     bug affects two verification experiments (lab_sea and lab_sea.hb87),
+     recover old (wrong) results by setting noSlipFac = 2. in
+     seaice_calc_strainrates.F;
+   - add another averaging method for etaZ (etaZmethod=3), a mix of 2 and 0
+   - add runtime parameter SEAICE_JFNKepsilon for that finite difference
+     gradient in the Jacobian times vector operation (s/r seaice_jacvec)
+   - fix line search in seaice_jfnk.F (s/r seaice_jfnk_update)
+ o pkg/seaice: reorganize seaice_lsr.F to be able to reuse more code:
+   - new subroutines seaice_lsr_tridiagu/v
+   - introduce loop bounds i/jmin/max to be able to use a restricted
+     additive Schwarz method, but not used for now.
+   - rename SEAICE_CALC_LSR_COEFFS into SEAICE_LSR_CALC_COEFFS
+   - use new subroutines seaice_lsr_tridiagu/v in s/r seaice_preconditioner
+ o OpenAD support
+    Reorganize S/R call for overall time-stepping loop to facilitate
+    OpenAD revolve loop replacement
+    (new S/R main_do_loop.F)
+ o model/src:
+   - add 3-D array 3rd dimension to argument list of S/R ADAMS_BASHFORTH2/3;
+   - pkg/cheapaml: remove local S/R ADAMS2d and use instead standard S/R
+     ADAMS_BASHFORTH2.
+ o pkg/cheapaml:
+   - add new parameter (default=F, same as before) to disable full domain
+     (including land) periodicity in X & Y dir.
+   - new S/R CHEAPAML_COPY_EDGES to copy relaxation field into edges of
+     prognostics field ; merge the 2 S/R cycle_2d_tracer and timestep_2d_tracer
+     into single S/R CHEAPAML_TIMESTEP.
+ checkpoint64d (2013/02/17)
+ o pkg/monitor (angular momentum):
+   - do not add Eta contribution to the total AM if using rigid-lid;
+   - correct for Adams-Bashforth in zonal-wind part (instead of in AM_eta).
+   - horizontal discretisation: compute Zonal wind contribution separately for
+     each component (instead of from cell centered averaged) and use the 4
+     grid-cell corner averaged value of Omega*(R*cos_Phi)^2 in AM_eta part.
+   - Check that AM is conserved with linear dynamics (momAdvection=F and linear
+     FreeSurf) if using vectorInvariant momentum.
+ o model/src (horizontal grid):
+   - move initialisation of all horizontal grid arrays to null value
+     from specific horizontal grid S/R to main S/R INI_GRID;
+   - add 2 new arrays to project model C-grid velocity on to zonal direction
+     (similar to AngleCosC & -AngleSinC but at U and V point location) and
+     compute them in S/R CALC_GRID_ANGLES.
+ o pkg/seaice: replace a hard coded parameter by a runtime parameter
+     SEAICE_JFNK_tolIter
+ o pkg/seaice: introduce a restricted additive Schwarz (RAS) method in
+     preconditioner for JFNK (run LSR into the overlaps as far as possible,
+     i.e OLx/y-2, but overwrite the solution in the overlaps)
+   - extend loop range in seaice_calc_viscosity
+   - add new parameters SEAICE_OLx/y (default = OLx/y-2)
+   - add flexible loop ranges to seaice_preconditioner, seaice_calc_lsr_coeffs
+   - slightly modify loops in tridiagonal solver lsr-preconditioner
+   - by default remove the extra exchange in seaice_preconditioner with a
+     replacement of an undocumented CPP flag by SEAICE_PRECOND_EXTRA_EXCHANGE
+   - modify offline_exf_seaice so that old results without RAS are reproduced
+     for output.dyn_jfnk.txt
+   in seaice_fgmres.F (unrelated to RAS)
+   - add a cpp-flag option for a re-ordered mapping (potentially more
+     efficient), but because this changes the results, turn it off by
+     default
+   - replace the save statement by local common blocks
+ o utils/matlab:
+   - fix tile-offset in rdmnc.m when output was produced using EXCH2.
+   - update cs_grid/bk_line scripts to use load_grid.m (in utils/matlab)
+     instead of local script "load_cs.m".
+ o pkg/seaice:
+   - fix a serious bug in seaice_fgmres.F, s/r seaice_scalprod, connected
+     to the scalarProductMetric and the unrolling. By chance this does not
+     change the verification experiment, because of the particular domain
+     decomposition
+ o pkg/diagnostics:
+   - change default missing_value from UNSET_RL to -999.
+ o pkg/layers: improve vectorization of layers_fluxcalc.F
+   - step 1: split loops, make TatU/V 2D arrays. This alone reduces the cpu
+     time spent in this routine by more than a factor of 3 on an NEC-SX8
+   - step 2: replace search algorithm by a bisection algorithm found in
+     Press et al. Numerical Recipes in Fortran. This algorithm can be
+     vectorized and finds the correct bin in approx. log2(Nlayers) steps.
+     For now, use this algorithm only for TARGET_NEC_SX defined.
+   - moved the search algorithm into a separate subroutine, that is kept
+     within the same file for automatic inlining.
+   - modified catching potential errors
+ o pkg/ecco:
+   - add compile switches ALLOW_SHALLOW_ALTIMETRY and ALLOW_HIGHLAT_ALTIMETRY.
+ o model/src, pkg/autodiff, pkg/ctrl, pkg/grdchk :
+   - modifications for ALLOW_GENTIM2D_CONTROL
+   -- forward_step.F, the_main_loop.F : pass options and arrays for adjoint tapes.
+   -- load_fields_driver.F : add call to CTRL_MAP_GENTIM2D( myTime, myIter, myThid )
+   -- add xx_gentim2d0/1 in ctrl_ad_check_lev1_dir.h checkpoint_lev1_directives.h etc
+   -- use ctrl_swapffields.F (new) instead of exf_SwapFFields.F in ctrl_get_gen.F
+ o model/src:
+   - account for moist thermodynamics in (dry) potential temperature equation;
+     update results of experiments: aim.5l_cs (x2), fizhi-cs (std + aqualev)
+     and cpl_aim+ocn.
+   - also switch to standard compiler (gfortran, was using ifort previously)
+     for fizhi-cs experiments reference output.
+ o pkg/ctrl:
+   - 1st step toward generic time-varying control variable (2D) via CPP option
+     ALLOW_GENTIM2D_CONTROL
+   - note new namelist ctrl_nml_genarr in data.ctrl
+ o verification/global_ocean.cs32x15:
+   - switch off OLD_THSICE_CALL_SEQUENCE (both forward and AD code) to use new
+     thsice calling sequence and update "output.icedyn.txt" output file.
+ o pkg/ptracers:
+   - from Ryan A.: code to allow to restart a tracer at regular time interval
+     specifying a reset frequency and a reset-phase (for each tracers).
+ o pkg/thsice:
+   - implement new sequence of calls for thsice+seaice:
+       previously:   ice-Dyn,ice-Advect,ice-Thermo(thsice)
+       new sequence: ice-Thermo(thsice),ice-Dyn,ice-Advect
+   - allows (with temporary CPP option "#define OLD_THSICE_CALL_SEQUENCE"
+     in CPP_OPTIONS.h) to recover old sequence;
+   - update diagnostics for Intermediate State thsice diagnostics: now filled
+     just before advection (instead of just after advection in old sequence);
+   - update output of experiment offline_exf_seaice (standard test);
+   - in global_ocean.cs32x15 exp., postpone output.icedyn.txt update
+     by setting #define OLD_THSICE_CALL_SEQUENCE in CPP_OPTIONS.h
+ o pkg/aim_v23:
+   - use tiled array for aim_CO2 and surface wind speed for export to coupler;
+   - use standard pkg/mdsio routines to read & write CO2 pickup file;
+   - in-line S/R AIM_AIM2DYN_EXCHANGES in aim_do_physics.F;
+   - Implement new sequence of calls for seaice advection (with thsice and
+     seaice diffusion): do ice advection after ice-Thermodynamic (previously
+     was done before); change aim_do_physics.F (split the bi,bj loops block);
+   - use same CPP option (OLD_THSICE_CALL_SEQUENCE) to recover old sequence;
+ o pkg/thsice:
+   - add a missing EXCH of sIceLoad in thsice_main.F (ocean set-up) for the case
+     where just seaice diffusion is used without seaice-dynamics.
+ checkpoint64c (2013/01/18)
+ o pkg/seaice:
+   - add a parameter JFNKres_tFac that can replace JFNKres_t
+     (= JFNKres_tFac*JFNKresidual before JFNK solver)
+   - add a line search option to the JFNK solver
+   - move update of u/vIce and computation of initial residual into a separate
+     routine (same file); makes the code a little easier to read (?)
+   - the line search requires computation of the residual and for some reason
+     I cannot do the update of u/vIce at the beginning of the Newton loop
+     without changing the results, so we move computation of the new residual
+     also to the end of the Newton loop, even without the line search
+ o pkg/mdsio:
+   - write missing value (corresponding to undefined array value) to meta files;
+     skip this if missing value is one (UNSET_RL would be a better value for the
+     case of undefined missing value but it's current the default missing-value);
+     Also update mdsio_read_meta.F (reading timeInterval & missing-value).
+ o pkg/exf & thsice:
+   - for diagnostics purpose, fill-up and update Qsw array (+ fill the
+     diagnostics) even when SHORTWAVE_HEATING is #undef;
+ o verification/cfc_example:
+   - turn on pkg/layers with pkg/diagnostics (to test pkg/layers and to
+     illustrate how to use it).
+ o verification/offline_exf_seaice:
+   in input: add SEAICErestoreUnderIce=.TRUE., and reduce size of forcing
+     files to only one time-record.
+   in input.thermo: narrow the 2 bands of low initial ice-concentration near
+     N & S edges; switch on SEAICErestoreUnderIce=T; use pkg/diagnostics for
+     snapshot output; same mcPheePiston value as in thsice with
+     surf-current=0.2m/s.
+   in input.thsice: similar set-up as in input.thermo (channel with same seaice
+     initial conditions).
+ o verification/cfc_example:
+   - update file "data" with more standard choice (default rotationPeriod,
+     exactConserv=T, reduce ivdc_kappa to 10, remove multiDimAdvection=F,
+     set deltaTFreeSurf to deltaTtracer) and update the output.
+ o pkg/layers:
+   - fix bolus part so that it compiles with #undef GM_BOLUS_ADVEC;
+   - ensure that "layers_bolus" is switched to False when useGMRedi=False.
+ o verification/offline_exf_seaice:
+   - set all {field}period to zero for constant-in-time forcing (not tested
+     anywhere else).
+ o verification/offline_exf_seaice:
+   - dyn_lsr  : use pkg/seaice S/R (instead of pkg/thsice) to advect sea-ice;
+   - dyn_jfnk : use pkg/thsice S/R (instead of pkg/seaice) to advect sea-ice.
+ o model/src:
+   - implement Finite-Volume method for (hydrostatic) presure gradient
+     from S.-J. Lin (QJRMS 1997), for atmosphere using sigma-coordinate.
+ o pkg/seaice: implement EVP* by Lemieux et al. (2012).
+   - In order to be compatible with the default EVP code, this requires changing
+     the EVP code around a little; and because any small change immediately
+     breaks the lab_sea.hb87 verification experiment, the reference output is
+     updated two times (each time the remaining aggrement was only 2 digits):
+     - after replacing 1/dt by 1*recip_dt with a precomputed recip_dt
+     - after replacing 1/(1+0.5*dt/tau) by a/(a+1), with a=2*tau/dt
+     The adjoint test lab_sea.evp also needed to be updated.
+   - Turn on EVP* by setting SEAICE_deltaTevp as before, and setting
+     SEAICEuseEVPstar=.true.; for EVP* SEAICE_deltaTevp does not need to be
+     a factor of SEAICE_deltaTdyn, and you can set the number of EVP steps
+     explicitly with SEAICEnEVPstarSteps (thereby overriding the default of
+     INT(SEAICE_deltaTdyn/SEAICE_deltaTevp)). Controlling EVP* is deliberately
+     kept obscure, because I need to test it a little more.
+ o pkg/cheapaml:
+   - fix few incorrect type (_RL/_RS) in subroutine calls.
+ o pkg/seaice:
+   - new S/R SEAICE_MAP_RS2VEC (similar to SEAICE_MAP2VEC) to map _RS arrays
+     to _RL vector; this fixes JFNK code when compiling with "-use_r4" option.
+ o model/src:
+   - add a warning if using select_rStar=2 with nonlinFreeSurf <> 4;
+     change (in input_ad*/data) select_rStar from 2 to 1 for AD verification
+     experiments global_ocean.cs32x15 & tutorial_tracer_adjsens (+ update output)
+ o pkg/cheapaml:
+   - replace "273.1 _d 0" by celsius2K in pkg/cheapaml/cheapaml.F and
+     update output of experiment cheapAML_box.
+   - store in CHEAPAML.h coeffs ssq[0:2] for saturation specific humidity,
+     and set them only in one place (cheapaml_readparms.F).
+   - replace "273.16 _d 0" by celsius2K & replace "3.14159 _d 0" by constant "PI"
+   - remove re-setting of main-model parameter "celsius2K" (in cheapaml_readparms)
+     and re-setting of cheapAML params "lath" & "p0" (in cheapaml_init_varia).
+ o model/src/the_main_loop.F:
+   - fix revision 129 : need both ALLOW_ECCO and ALLOW_ECCO_EVOLUTION.
+ o pkg/seaice:
+   - remove legacy branch code.
+   - retire SEAICE_GROWTH_LEGACY and SEAICE_CAP_HEFF accordingly.
+ o verification/*/code*/SEAICE_OPTIONS.h:
+   - remove documentation for retired CPP flags (SEAICE_GROWTH_LEGACY,
+     SEAICE_CAP_HEFF).
+ o pkg/cheapaml:
+   - use standard routine (S/R GET_PERIODIC_INTERVAL) to decide when it is time
+     to load new forcing fields.
+   - add missing "_d 0" where it's needed; + some editing (improve indentation).
+   - remove switch to "-r8" compiler option (no longer needed) in verification
+     cheapAML_box, keep same output (small trucation error differences).
+ o verification/offline_exf_seaice:
+   - add thermodynamics only test.
+ o verification/cheapAML_box:
+   - split the domain in 8 (2x4) tiles; add MPI and multi-threaded test;
+     keep same output (same 14 digits for cg2d).
+   - switch on "-r8" compiler option (some numerical values are missing
+     the "_d 0") and update output (only 6 digits for cg2d were preserved).
+ checkpoint64b (2012/12/24)
+ o pkg/cheapaml:
+   - remove un-used variables (Qnet,EmPmR) from pickup files.
+   - store tendency of advected variables into cheapaml pickup file
+     and fix the AB-2 restart.
+ o verification/offline_exf_seaice and lab_sea adjoint:
+   - switch to new code (#undef SEAICE_GROWTH_LEGACY).
+   - switch to 4 time steps in offline, consistent with lab_sea.
+   - match parameters from SEAICE_GROWTH_LEGACY branch in data.seaice.
+   - update results after change of experiment seaice.
+ o pkg/seaice:
+   - remove option SEAICE_MULTICATEGORY; has been replaced with run-time
+     parameter SEAICE_multDim. Issue a warning if SEAICE_MULTICATEGORY is
+     still defined since SEAICE_multDim needs to be set to MULTDIM value (from
+     SEAICE_SIZE.h) to recover previous #define SEAICE_MULTICATEGORY default.
+ o model/src:
+   - add run-time parameter to select CG2D solver minimum-residual solution
+     (in case of a poor convergence).
+ o pkg/seaice/seaice_lsr.F
+   - move calculation of matrix coefficients into new
+     S/R SEAICE_CALC_LSR_COEFFS; for now this routine remains in the same
+     file; the main purpose of this change is to be able to reuse the code
+     in S/R SEAICE_PRECONDITIONER
+   - modify the computation of the residual so that the mass of sea-ice
+     is not used twice; this simplifies the calculations, but since
+     the residual is never used except when LSR_mixIniGuess.ge.4---and this is
+     not tested in testreport---this does not affect the testreport results.
+ o verification/seaice_obcs:
+   - disable SEAICE_GROWTH_LEGACY; reset input files to match those of
+     verification/lab_sea/input.salt_plume; changes results/output.txt*
+ o model/src:
+   - adapt quasi-hydrostatic formulation to work with p or p* coordinate.
+ o pkg/seaice:
+   - improve description of parameters in seaice_fgmres.F and start
+     cleaning up the code
+   - change name of SCALPROD to SEAICE_SCALPROD and modify meaning of
+     second argument
+   - add a metric based on grid cell area to SEAICE_SCALPROD; update
+     results of offline_exf_seaice.dyn_jfnk
+   - compute initial residual norm in seaice_jfnk based on SEAICE_SCALPROD
+ o pkg/aim_v23:
+   - fix an other bug in dissipation heating (grid-cell area was missing).
+ o model/src + pkg/seaice:
+   - add global (multi-tile) linear solver for pair of tri-diagonal system
+     along X and Y lines, respectively for U and V component.
+     Note: 1) MPI and cube-exchange not yet coded.
+) probably not accurate for poorly conditioned / large size problem.
+   - add option for SEAICE_LSR to use global (multi-tile) tri-diagonal solver;
+     default: not compiled and not used.
+ o pkg/seaice:
+   - first attempt at a multi-threaded fgmres solver for the JFNK solver:
+     introduce bi/bj loops and use global_sum_tile_rl instead of
+     mpi_allreduce in seaice_fgmres.F
+   - improve diagnostics output for fgmres solver (seaice_fgmres.F)
+   - replace a few unnecessary goto statements by if-blocks  (seaice_fgmres.F)
+   - add a verification experiment for JFNK in offline_exf_seaice
+ o verification:
+   - change (for now, only fwd test) offline_exf_seaice experiment:
+     use a re-entrant channel with idealized coastline (trapezoidal shape)
+     at southern boundary to explore seaice dynamics and thermodynamics
+     with simple forcing. Main set-up has dynamics+thermo and SST relaxation;
+     secondary test (input.thsice) use thermodynamics only with SST relaxation.
+   - add seaice-dynamics only secondary test using LSR and pkg/thsice advection.
+ o pkg/exf:
+   - disable "sstExtrapol" when Nr=1
+ o verification:
+   - add new experiment "cheapAML_box" (simple 1 layer set-up from Bruno Deremble)
+     to test pkg/cheapaml.
+ o pkg/aim_v23 & pkg/shap_filt:
+   - fix dissipation heating (erroneous gravity multiplication factor).
+ o pkg/seaice:
+   - remove unused field pressPre from jfnk solver
+   - rename two subroutines in seaice_preconditioner.F
+ o eesupp/src:
+    - S/R MDSFINDUNIT avoids reserved unit numbers (scrUnit1, eeDataUnit ...)
+ o pkg/seaice/seaice_preconditioner.F: fix preconditioner once again
+    - remove wrong parts of the rhs and the lhs (were in there
+      because I did not understand the concept of this preconditioner)
+    - add an exchange between u- and v-sweep. This increases communication
+      by a factor of two but improves the convergence of jfnk. Ideally,
+      one would like the u- and v-sweep to be independent. So far within
+      undocumented ifdefs
+    - reorganize the extra computations for printing the residuals
+ o tools/genmake2:
+   - comment out the "mpif.h" include in NetCDF test programm (for MPI built)
+     since it's not necessary (and was preventing to use MNC in some cases).
+ checkpoint64a (2012/11/16)
+ o pkg/autodiff:
+   - improve pkg-internal logical parameter switch (inAd/inFwd mode) so that
+     autodiff_readparms.F no longer depends on calling order (within
+     packages_readparms.F) and no longer requires to include ${PKG}_PARMS.h):
+     rename param turnFreeDriftInAdMode to SEAICEuseFREEDRIFTswitchInAd
+     and change param SEAICEuseDYNAMICSinAdMode to SEAICEuseDYNAMICSswitchInAd.
+ o pkg/obcs:
+   - adding tidal velocity forcing capability to obcs
+     for usage example, see verification/seaice_obcs/input.tides
+ o pkg/seaice:
+   - turn the LSR-relaxation parameters WFAU/V into runtime parameters
+     SEAICE_LSRrelaxU/V
+   - introduce runtime parameter SEAICEetaZmethod (=0 by default)
+ o pkg/aim_v23:
+   - implement heating from friction (bottom friction and stratospheric drag).
+ o pkg/shap_filt:
+   - fix diagnostic "SHAP_dKE" (was 2 time smaller); implement heating from
+     dissipation but only for Shap_funct=2, active when addFrictionHeating=T.
+ o model/src:
+   - move AddMass common block from DYNVARS.h to FFIELDS.h; allow to read-in
+     time-constant addMass field from file (addMassFile);
+   - support for heating due to friction (and Kinetic Energy dissipation):
+     add option, run-time switch and 3-D field array + support code ; each pkg
+     or S/R can add heating contribution (if there is a sink of KE); the sum is
+     accounted for as a Temperature tendency term (EXTERNAL_FORCING_T).
+ o pkg/seaice:
+   - complete merge of ITD code into seaice_growth.F
+     from MITgcm_contrib/torge/itd/code/
+     no verification so far, but Torge Martin tested
+     "1-D test case and Beaufort set up;
+     deliver okay results after 1 model year."
+   - complete merge of SEAICE_SIZE.h into all relevant routines
+   - move computation of eta at Z-points into calc_viscosities
+     + introduce global field etaZ
+     + add different methods for computing etaZ, for now the old
+       method (simple averages of eta to Z-points) is hardwired
+     + replace etaMeanZ by etaZ in seaice_lsr, seaice_calc_residual,
+       seaice_preconditioner
+   - simplify computations for SEAICE_ZETA_SMOOTHREG
+   - seaice_preconditioner:
+     + replace one remaining press by pressLoc (mistake)
+     + adjust printing of residuals
+   - improve I/O of diagnostics of JFNK in seaice_jfnk.F:
+     + add (SEAICE.h) and rename some counters (initiliased in
+       seaice_init_fixed.F)
+     + add _BEGIN/END_MASTER (myThid)  around print statements
+     + print total number of iterations and failures over SEAICE_monFreq
+       interval to STDOUT
+   - move control over output-messages by fgmres to seaice_jfnk to save
+     some operations
+   - move resetting initial guess for fgmres outside of seaice_fgmres_driver
+     in order to make restarts with sol .ne. zero (fgmres with restarts)
+     (seaice_jfnk.F, seaice_fgmres.F)
+   - seaice_calc_l/rhs.F: replace maskW/S by maskInW/S; this fixes
+     a serious convergence problem when open boundaries are involved
+ o pkg/ggl90: fix computation of control volumes for the case of
+   ALLOW_GGL90_HORIZDIFF (probably not used very often): move control volumes
+   up half a grid cell from C-centered to W-centered (pointed out by C. Eden)
+ o pkg/seaice: simplify seaice_evp by avoiding use of extra fields u/vIceC
+ o pkg/autodiff
+   - Add inAdMode switch for SEAICEuseDYNAMICS:
+     SEAICEuseDYNAMICSinAdMode
+     (extend logic in ADAUTODIFF_INADMODE_SET)
+ o pkg/seaice
+   - Step 1 of merging ice-thickness distribution (ITD) code from
+     MITgcm_contrib/torge/itd/ (author: Torge Martin)
+     The code implements concept laid out in Thorndike et al. (1975);
+     code is enabled via CPP flag SEAICE_ITD
+     nITD (in SEAICE_SIZE.h) defines number of ice thickness categories;
+     code is not complete yet!!
+   - SEAICE_SIZE.h now included in almost all seaice routines
+ o verification (using seaice):
+   - switch back seaice-dynamics (+ lower SOLV_MAX_ITERS) in ADM exp.
+     global_ocean.cs32x15.seaice ; update results.
+   - compile B-grid dynamics in FW test exp 1D_ocean_ice_column ;
+   - compile C-grid dynamics with #define SEAICE_ALLOW_JFNK in FW test exp
+     offline_exf_seaice (previously compiling B-grid).
+ o pkg/exf:
+   - fix some STOP conditions in exf_check.F (from Aug 28, modifs did not allow
+     to specify neither just 1 comp of wind or wind-stress, nor no surface momentum
+     forcing): just replace CPP option ALLOW_ATM_WIND with run-time param useAtmWind.
+ o pkg/layers (adjust changes from Sept 19):
+   - do snap-shot output and fill diagnostics from inside iLa loop (layers_calc.F)
+     this allows to remove "layers_maxNum" dimension from all layers arrays.
+ o pkg/layers (adjust changes from Sept 19):
+   - remove ALLOW_LAYERS_OUTPUT ; fix snap-shot and time-ave output ;
+   - snap-shot extended to all type of layers (not just the 1rst type);
+   - remove layers variables when corresponding CPP option is undef.
+ o pkg/layers:
+   - rename pkg/layers variable and add new output (layer exist & un-weighted
+     velocity in layer)
+ o pkg/seaice:
+   - simplify (?) ocean-drag coefficent computations by using
+     the same routine in all three solvers (saves some code lines)
+   - remove global fields DRAGA and DRAGS from C-grid code and
+     declare them locally in lsr.F (the only place where they are
+     still used)
+   - update AD output of lab_sea.evp (very sensitive anyway).
+ o pkg/seaice: add Jacobian-free Newton Krylov solver for ice dynamics
+   (Lemieux et al. 2010, 2012). Turn on with the usual SEAICE_ALLOW_JFNK
+   and SEAICEuseJFNK=.true. A few things to note:
+   - involves a FGMRES, that is parallel but very inefficient,
+     because of many scalar products (global sums) in the Gram-Schmidt
+     orthogonalization method. Needs to be replaced. Original code
+     from J.-F. Lemieux
+   - preconditioner for FGMRES is a stripped down version of LSOR
+   - SOLV_MAX_ITERS is now used for LSOR as a solver and as a
+     preconditioner. For the preconditioner, the default is set to 10.
+   - Jacobian times vector is computed with finite differences
+   - marginally related to JFNK-solver: add a smooth regularization for
+     zeta with tanh that will improve convergence (Lemieux and Tremblay,
+) for any implicit solver (not implemented for EVP because EVP
+     does not need this regularization in the first place). Define
+     SEAICE_ZETA_SMOOTHREG in SEAICE_OPTIONS.h to use.
+ o eesupp/src:
+   - check in genmake2 that intrinsic S/R flush is available.
+   - add S/R to flush IO unit (if intrinsic S/R flush is available)
+   - flush standard & error msg unit before MPI termination
+   - if debugMode, flush IO unit after printing msg
+ o pkg/ctrl:
+   - ctrl_unpack.F, ALLOW_GENARR3D_CONTROL code: fix missing argument in call
+     to ctrl_set_unpack_xyz.
+ checkpoint64 (2012/10/09)
+ o pkg/shelfice
+   - in mom_fluxform.F, mom_vecinv.F:
+     CALL SHELFICE_V_DRAG(bi,bj,k,vFld,KE,KappaRU,vF,myThid)
+     Bug fix KappaRU -> KappaRV
+     does not change verification/isomip but may change other setups
+     (presumably constant KappaRU=KappaRV)
+   - fix diagnostics SHIU/Vdrag (thanks to Tom Millgate)
+ o pkg/obcs:
+   - fixed some indexing bugs in obcs_seaice_sponge.F
+   - added obcs relaxation subroutines for HSALT and HSNOW
+   - changes verification/seaice_obcs/results/obcs_seaice_sponge.F
+ o pkg/seaice:
+   - add "multicategory" parameterization for snow in analogy to ice,
+     default is off for now.
+ o pkg/obcs:
+   - added obcs_seaice_sponge.F for obcs relaxation of seaice variables;
+     see verification/seaice_obcs/input.seaiceSponge for example application.
+   - remove local commom bloc "OBCS_GLOBAL" in obcs_readparms.F and do all the OB
+     index setting by master-thread. This fix multi-threads Pb in previous modifs.
+ o pkg/layers :
+   - add diagnostics to pkg/layers
+   - move the meat of pkg/layers from layers_calc.F to layers_fluxcalc.F
+     (from R.Tulloch). Layers_calc.F now calls layers_fluxcalc.F accordingly.
+ o pkg/generic_advdiff/gad_implicit_r.F :
+   - fix ADVr diagnostics in case of both implicit vertical advection and diffusion.
+ o pkg/seaice/seaice_growth.F:
+   - fix SItflux diagnostics in virtual salt flux + balanceEmpmr case.
+ o pkg/obcs:
+   - change default setting of OBCS_UVICE_OLD from defined to undef;
+   - use new parameter OB_indexNone for null index value (instead of hard-coded 0)
+     in all pkg/obcs code and in other pkgs; remove k loop in obcs_check_depths.F;
+   - pass OB_indexNone as (new) argument to S/R CTRL_MASK_SET_[X,Y]Z;
+   - change OB null index value (OB_indexNone) to -99 ; this fix the problem
+     with Southern & Western OB at a tile edge (at least in a simple set-up).
+ o pkg/obcs:
+   - change settings of OB index in case OB coincides with tile edge (shared by
+tiles), so that common OB location is registered by both tiles (instead of
+     only 1). However, for Southern and Western OB, index value = 0 is not
+     recognized as valid OB index (=default null value) and needs to be fixed.
+   - modify accordingly OBCS_BALANCE_FLOW and OBCS_MONITOR (avoid double counting)
+   - new parameter "OB_indexNone" for null index value (for now, still zero)
+     to replace hard-coded null index value of zero.
+ o pkg/exch2:
+   - improve W2_USE_E2_SAFEMODE (faster) and W2_E2_DEBUG_ON:
+     always check buffer-size (but outside the loop); move checking for valid
+     index from W2_USE_E2_SAFEMODE to W2_E2_DEBUG_ON; in W2_E2_DEBUG_ON,
+     print each tile and point connection only if |W2_printMsg|>= 2 and 3.
+ o pkg/ctrl (pack & unpack):
+   - in ctrl_pack.F & ctrl_unpack.F, use the same local file-name variable
+     (locally defined) for different variables (+ remove the variable-specific
+     file name in CTRL_GENARR.h). For now, only implemented for GENARR2/3D_CONTROL
+     (to be extended to other local file names in ctrl.h).
+ o pkg/flt:
+   - add a FLT_Iter0 option (similar to PTRACERS_Iter0).
+ o pkg/mdsio:
+   - fix missing STOP in mdsio_readvec_loc.F (case ioUnit=0) when file is missing
+ o tools/genmake2:
+   - add similar dependences for target EXE_AD & EXE_FTL as we have for EXECUTABLE
+     (added by Alistair in version 1.51 for building without make depend);
+   - remove Header files list (H_SRC_FILES) from the dependence of targets
+      ad_input_code.f & ftl_input_code.f (not clear why it was added in the first
+     place in version 1.23): this save going through staf when unrelated header
+     file has been modified.
+    Note: for an intermediate target (e.g., ad_input_code.f or adtaf) without
+     "make depend" step, still need to do "make links" before "make adtaf".
+ o eesupp/src (+ few pkg src files) & genmake2:
+   - finish to remove ALWAYS_USE_MPI in source code that TAF does not see;
+   - no longer set ALWAYS_USE_MPI in Makefile (was done by genmake2).
+   - improve genmake2 checking for ALLOW_${PKG} in CPP_OPTIONS.h files (distinguish
+      upper/lower case ; account for space between "#" and undef/define)
+ o pkg/flt (with exch2):
+   - cleaning: fix so that it compiles; move remaining MPI calls out of flt_exch2.F;
+   - simplify threads synchronisation; fix (many issues) multi-threaded with MPI.
+ checkpoint63s (2012/09/05)
+ o pkg/ecco:
+   - remove #ifdef ALLOW_SMOOTH_CORREL3D brackets.
+   - add more relevant #ifdef ALLOW_SMOOTH ones.
+   - sort out useAtmWind, useSMOOTH, ctrlSmoothCorrel2D.
+ o pkg/ctrl:
+   - CTRL_OPTIONS.h : document CPPs related to smoothing; ALLOW_SMOOTH_CORREL2D/3D,
+     ALLOW_CTRL_SMOOTH, ALLOW_SMOOTH_CTRL2D, ALLOW_SMOOTH_CTRL3D.
+   - ctrl.h : document run time params doInitXX, doMainPack, doMainUnpack, doPackDiag,
+     doSinglePrecTapelev (audodiff param!), ctrlSmoothCorrel2D (new) and
+     ctrlSmoothCorrel3D (new).
+     The added ctrlSmoothCorrel2D/3D replace the old ALLOW_SMOOTH_CORREL2D/3D CPP.
+   - ctrl_readparms.F : initialise ctrlSmoothCorrel2D/3D and read from namelist.
+   - ctrl_init.F ctrl_pack.F ctrl_unpack.F : switch off ustress/vstress
+     controls when useAtmWind, and vice versa.
+   - ctrl_map_ini_ecco.F : UVEL0, VVEL0, edtaux, edtauy cannot be smoothed as tracers.
+   - ctrl_get_gen.F : replace #ifdef ALLOW_SMOOTH_CORREL2D with
+       #ifdef ALLOW_SMOOTH, IF ctrlSmoothCorrel2D, IF useSMOOTH.
+   - ctrl_map_ini_gen.F : replace #ifdef ALLOW_SMOOTH_CORREL3D with
+       #ifdef ALLOW_SMOOTH, IF ctrlSmoothCorrel3D, IF useSMOOTH.
+   - ctrl_set_pack_xy[z].F, ctrl_set_unpack_xy[z].F:
+     replace ALLOW_SMOOTH_CORREL2D/3D brackets with ctrlSmoothCorrel2D/3D.
+ o pkg/smooth:
+   - remove un-necessary includes.
+   - remove ALLOW_SMOOTH*D and ALLOW_SMOOTH_CORREL*D brakets.
+     Those CPP options were never defined, and not necessary.
+ o model/src:
+   - fix CPP brackets in ini_mixing.F (GM_background_K belongs to gmredi).
+   - standard treatment of useSMOOTH.
+ o pkg/autodiff:
+   - add LOGICAL useGGL90inAdMode, useGGL90inFwdMode, useSALT_PLUMEinAdMode,
+     useSALT_PLUMEInFwdMode allowing to switch off ggl90 and salt_plume adjoint.
+ o pkg/exch2:
+   - add "if usingMPI" where it was missing (in exch2_rx?_cube*.template)
+     + start to remove ALWAYS_USE_MPI in source code that TAF does not see.
+   - make new S/R W2_MAP_PROCS out of w2_eeboot.F to setup exch2 CommonFlag
+     and tiles to process mapping.
+   - re-arrange 3 header files (W2_EXCH2_PARAMS.h, _BUFFER.h & _TOPOLOGY.h)
+     moving /EXCH2_FILLVAL_RX/ & /W2_EXCH2_COMMFLAG/ to W2_EXCH2_TOPOLOGY.h;
+     rename "exch2_tProc" to "W2_tileProc" and move seting of e2FillValue_RX
+     from w2_eeboot.F to w2_readparms.F.
+ o eesupp/src:
+   - set exchNeedsMemsync & exchUsesBarrier according to "usingMPI" (instead of
+     ALWAYS_USE_MPI) + moved from ini_communication_patterns.F to eeset_parms.F;
+     also move setting of exchCollectStatistics from exch_init.F to eeset_parms.F
+   - in eedie.F and all_proc_die.F, always call MPI_FINALIZE when ALLOW_USE_MPI
+     is defined (remove condition on usingMPI) to match cases where MPI_INIT
+     has been called.
+   - fix bug I put in previous modif of exch_sm_3d_rx.template (not much used);
+   - change default (non-MPI) value of myPid (from 1 to 0) to match MPI settings
+     (so that on 1 proc, get same myPid independently of usingMPI)
+   - add a stop if multi-procs but usingMPI=F ; stop also if usingMPI=T and
+     useCubedSphereExchange with EXCH-1 (safer).
+   - add "if usingMPI" where it was missing (+ start to remove ALWAYS_USE_MPI).
+ o pkg/ggl90:
+   - fix bug in filling corner mask array "mskCor" (FILL_CS_CORNER_TR_RL call)
+     used in ALLOW_GGL90_SMOOTH code.
+ o pkg/flt:
+   - fix typo in FLT_WITHOUT_Y_PERIODICITY (the effect was to ignore stopping
+     floats at the Southern end of the domain).
+ o eesupp/inc:
+   - add a list of CPP-options which can be set by Makefile (DEF_IN_MAKEFILE.h);
+     but not used (and not to be used) anywhere, just for documentation.
+ o pkg/autodiff, exf, ptracers & seaice (AD & TL output):
+   - comment out the very nasty "writeBinaryPrec = writeStatePrec" line, since:
+     a) can damage previously written records in any other multi-record files.
+     b) if needed, can easily do it cleanly, by calling S/R WRITE_REC_3D_RL/S.
+ o tools/genmake2:
+   - define variable MAKE within Makefile and use it in place of 'make';
+   - update AD_CONFIG.h (if needed) before building any of the executable
+     (forward, adjoint or tangent-lin); this involves a 2nd invocation of make;
+     and add the usual #ifndef/#define AD_CONFIG_H in AD_CONFIG.h;
+   - always print usual warning comment 'this file is automatically generated'
+     from script convert_cpp_cmd2defines (+ remove this warning from genmake2).
+ o pkg/cheapaml:
+   - updated to correspond to the code used in accepted paper (Nico Wienders).
+ o pkg/exf:
+     added run time switch useAtmWind to replace ALLOW_ATM_WIND cpp switch.
+     ALLOW_ATM_WIND now just sets the useAtmWind default (see exf_readparms.F)
+     and force defines ALLOW_BULKFORMULAE (EXF_OPTIONS.h).
+ o pkg/exf, autodiff, ctrl, ecco and seaice:
+     remove ALLOW_ATM_WIND brackets, or replace them with useAtmWind ones.
+ o pkg/ctrl, ecco:
+     allow to compile both ALLOW_U/VSTRESS_CONTROL and ALLOW_U/VWIND_CONTROL.
+     Depending on useAtmWind, one is inactive, and the other is active (see
+     exf_getffields.F/exf_getsurfacefluxes.F).
+ o tools/genmake2:
+   - improve error msg when failing in 2nd test of check_for_broken_Ff
+   - fix option '-makefile' short-name (-mf according to genmake2 -help)
+   - source local config file "genmake_local" just after processing the genmake2
+     command arguments (previously done before processing arg).
+ o pkg/grdchk:
+   - add a call to TURNOFF_MODEL_IO for Tangent-Linear run (in this case, call
+     to this routine from cost_final has been dropped in g_cost_final)
+   - improve printed information (more explicit msg, no longer using "print *,"
+      fix fcpertminus printed value).
+ o model/src:
+   - move call to COST_INIT_VARIA out of packages_init_variables.F directly
+     into initialise_varia.F (just after calling PACKAGES_INIT_VARIABLES):
+     this prevents getting cost-funct reset in adinitialise_varia recomputations.
+ o pkg/dic:
+   - move initialisation of "freefe" array from from dic_biotic_forcing.F to
+     fe_chem.F: this prevents TAF from dropping this initialisation in TLM code.
+ o pkg/grdchk:
+   - grdchk_main.F : added CALL GLOBAL_SUM_INT( ierr , myThid )
+   - grdchk_getadxx.F etc. : omit I/O if ierr.EQ.0
+ o pkg/autodiff/ctrl/grdchk :
+   - attempt to sort out what works and what does not,
+     with regard to I/O, and to warn/stop accordingly.
+ o pkg/grdchk:
+   - attempt to fix grdchk in the case of useSingleCpuIO.
+   - "if ( myProcId .EQ. grdchkwhichproc .AND. ierr .EQ. 0 )"
+    statements were moved from grdchk_main.F and into
+    grdchk_getadxx.F grdchk_getxx.F grdchk_setxx.F.
+   - a global sum is applied to record numbers icvrec/layer
+    out of grdchk_loc so that they be passed to I/O routines.
+ o pkg/smooth:
+   - fix recomputation that appeared with nlfs : use smooth_recip_hFacC,
+     smooth_hFacW, smooth_hFacS (copied at init_fixed) in 3d case.
+ o verification/testreport:
+   - add option '-tlm' for Tangent-Linear test (-adm,-oad,-tlm are all exclusive);
+   - can also use compressed (gzip) reference output file;
+   - change format (in pkg/grdchk) of TLM output (+ add forward gradient)
+     to be easier to collect by testreport.
+   - update existing TLM output (half out-of-date by more than 3 yrs).
+   - report NETCDF & LAPACK settings (from genmake2) in output dir.
+   - report run-time in each individual summary (previously only for AD test);
+     for TLM test, add also TAF version.
+   - add daily TLM test on (old) aces cluster + weekly test on baudelaire.
+ checkpoint63r (2012/08/15)
+ o tools/genmake2:
+   - fix Makefile for target ftlall (+ update files to clean after make ftlall)
+ o pkg/ecco/ecco_cost_final.F :
+   - fix fc print statements (to stdout and costfunction0000) so
+     that the printed value is always after the global sum.
+ o pkg/seaice/seaice_dynsolver.F :
+   - fix ice strength assymptote at SEAICE_area_max<1
+     (no change for the standard case of SEAICE_area_max=1)
+ o some cleaning:
+   - pkg source files: ensure that all *.F files from each pkg included the
+     corresponding ${PKG}_OPTIONS.h file (except stand-alone src file which
+     only includes CPP_EEOPTIONS.h); fix S/R CTRL_SMOOTH ; update AD experiment
+     code_ad/*.F src files; add new option-file in pkg/admtlm + corresponding
+     includes;
+   - model/src: add PACKAGES_CONFIG.h wherever ALLOW_AUTODIFF[_TAMC] is used.
+   - ALLOW_DIFFKR_CONTROL: add a stop in S/R CTRL_CHECK in case ALLOW_3D_DIFFKR
+     is undef; also define /DYNVARS_DIFFKR/ common block in DYNVARS.h when
+     ALLOW_DIFFKR_CONTROL is defined, to allow to compile and reach this stop.
+   - update option-file CPP_OPTIONS.h of all AD experiments:
+     * no longer include PACKAGES_CONFIG.h ;
+     * includes ECCO_CPPOPTIONS.h if PACKAGES_CONFIG.h has been included ;
+     * def/undef ALLOW_3D_DIFFKR independently of ALLOW_DIFFKR_CONTROL (before
+       including ECCO_CPPOPTIONS.h).
+ o pkg/cost, pkg/ctrl, pkg/ecco option-file:
+   - clean-up and split content of old pkg/ecco/ECCO_CPPOPTIONS.h file into
+     separated pkg option-file (done according to old doc from ECCO_CPPOPTIONS.h,
+     not necessary accurate).
+   - add a template for option-file ECCO_CPPOPTIONS.h, mostly empty, in
+     pkg/autodiff, i.e., the 1rst pkg to compile for adjoint built, with lines to
+     deliberately break compilation (a remainder that it needs to be customized)
+   - in pkg/ecco, includes ECCO_OPTIONS.h instead of COST_OPTIONS.h
+   - rename COST_CPPOPTIONS.h to COST_OPTIONS.h
+   - rename CTRL_CPPOPTIONS.h to CTRL_OPTIONS.h
+ o tools/genamke2:
+   - check for lapack.
+ o pkg/cost and pkg/ecco : attempt to sort out some of the limiting intricacies.
+   - pkg/cost.cost_final.F : allow for use of pkg/ecco and pkg/cost cost functions
+     jointly. The exclusive ifdefs were removed, to add costs terms (when defined)
+     from both packages.
+   - the fc global sum in pkg/ecco/ecco_cost_final.F was removed accordingly.
+   - for objf_atl we use either the pkg/ecco or the pkg/cost term depending on CPPs.
+   - pkg/ecco and model/src : add CPP brackets around pkg/cost and pkg/ctrl includes
+     of "CTRL_SIZE.h" "ctrl.h" "ctrl_dummy.h" "optim.h" / "cost.h" accordingly.
+ o pkg/cost : add comments to explain special and/or untested setups.
+ o pkg/exf:
+   - use EXF_OPTIONS.h to set pkg/exf options except if done in ECCO_CPPOPTIONS.h
+     (previously, ALLOW_AUTODIFF_TAMC was controling this switch).
+ o verification/*/code_ad:
+   mimimal cleaning of AD experiments ECCO_CPPOPTIONS.h option-file:
+   - reccord when this file is included (define ECCO_CPPOPTIONS_H)
+   - remove the most obvious obsolete features (e.g., #define ALLOW_COST not
+     allowed since Oct 2003 in any option-file except in PACKAGES_CONFIG.h)
+ o pkg/seaice :
+   - added possibility to change ice strength/PRESS0 relationship to
+     HEFF, according to the following run time parameters
+     SEAICEpresPow0 :: HEFF exponent for ice strength below SEAICEpresH0 (integer, >0)
+     SEAICEpresPow1 :: HEFF exponent for ice strength above SEAICEpresH0 (integer, >0)
+     SEAICEpresH0   :: HEFF threshold for ice strength            (m)
+ o pkg/ggl90 :
+   - added run time flag mxlSurfFlag to include the code that ensure
+     mixing between first and second level (previously included as a comment)
+ o verification/1D_ocean_ice_column/input_ad/data.autodiff :
+   - add test of newly added dumpAdByRec=T option where
+     we write all records to one file per variable.
+ o verification/global_ocean.cs32x15/code_ad/CPP_OPTIONS.h :
+   - switch to #define ALLOW_BALANCE_RELAX and ALLOW_BALANCE_FLUXES
+     to check that this code is ok with taf and compiles in adjoint.
+ o pkg/autodiff :
+   - added run time param dumpAdByRec : ad dump format switch.
+     If true then write all records to one file per variable.
+     Else write one file per record (remains the default).
+   - revise seaice_ad_dump.F and exf_adjoint_snapshots_ad.F accordingly.
+ o pkg/seaice:
+  - Added SEAICEuseTILT run time switch : if set to
+    false then omit the tilt term in seaice dynamics.
+  - Fix free drift calculation.
+ o pkg/shelfice:
+   When initializing SHELFICEDragQuadratic, set default to be
+   consistent with shiCdrag in case SHELFICEuseGammaFrict is used,
+   but retain option to set it independently
+   (inconsistenty spotted by Veronique Dansereau)
+ o eesupp/inc:
+   - in EEPARAMS.h, add real-type constant for some frequently used simple number
+      (0,1,2,1/2), with name explicitly referring to RS/RL type.
+ o model/src:
+   - move balancing of relaxation terms to new S/R balance_relax.F.
+ o pkg/autodiff:
+   re-write active I/O high-level (control) S/R:
+   - rename  S/R ACTIVE_READ/WRITE_RL to ACTIVE_READ/WRITE_3D_RL
+   - add 1 more argument (useCurrentDir) to replace the "_LOC" 2nd set of S/R.
+   - use standard pkg/mdsio I/O routines (MDS_READ/WRITE_SEC_XZ/YZ  and
+     MDS_READ/WRITE_FIELD); change loops to multi-threads.
+   - update and merge active_file_control_slice.flow into active_file_control.flow
+   - update the calls in lower level S/R (active_file.F, active_file_g.F and
+     active_file_ad.F) keeping the argument list and function unchanged.
+   - also update lower-level "_LOC" version (call same S/R with "useCurrentDir
+     =.TRUE.") and remove high-level (control) _loc version (not called anymore).
+   - new low-level active I/O routines, one for each type (RL/RS), for active var
+     of various (XY,XZ,YZ) shape and level number (arguments: arrShape, myNr);
+     fix ctrl_init_wet.F & ecco_cost_weights.F by calling the new S/R with the
+     right type.
+ o autodiff and RS=real*4:
+   - call the right type (_RS instead of _RL) of S/R in few output S/R (pkg/exf
+     ad-monitor and snapshots); disable arrType='RS' in mdsio_gl*.F ;
+   - change argument type of 3-D mask argument to _RS to match type in the call
+     (in seaice_cost*.F, ctrl_*_gen.F and *ctrl_bound.F); to be continued.
+ o pkg/thsice:
+   - re-anable balanceEmPmR when useSEAICE=T with useThSIce=T.
+   - option to correct ocean fresh-water flux for imbalance of Atmos+Land
+     fresh-water flux: uniform correction or proportional to local precip.
+ o pkg/ctrl:
+   - new header file CTRL_SIZE.h for parameters maxCtrlArr2D, maxCtrlArr3D
+   - redefine CPP option ALLOW_BOTTOMDRAG_CONTROL to
+                         ALLOW_BOTTOMDRAG_CONTROL_NONGENERIC
+   - verification/hs94.1x64x5/ tests ALLOW_GENARR{2D,3D}_CONTROL
+ checkpoint63q (2012/07/30)
+ o pkg/autodiff:
+   note about monitor and snap-shot of ad-variables:
+   a) need to apply ADEXCH before monitor or output of ad-vars to include
+    overlap contributions (was done for adjDump but missing for monitor).
+   b) since ADEXCH implies adding overlap values to interior array, machine
+    truncation error is expected when adding an ADEXCH call in the middle of
+    the time-stepping (although mathematically identical).
+   modifs:
+   - fix some incorrect type (RL/RS, UV/scalar) in ADEXCH calls and ad-vars
+     declaration (adEddyPsiX,adEddyPsiY in adcommon.h).
+   - add new run-time params (dumpAdVarExch & mon_AdVarExch) to select how  to
+     apply ADEXCH before monitor or snap-shot of ad-variables:
+        =0 : no ADEXCH ; =1 : do ADEXCH ; =2 : apply ADEXCH on a local copy.
+   - implement new method (copy+adexch) for snap-shot and monitor of main model
+     ad-vars (initially not used by default -> output unchanged).
+   - change default (set to 2) to use new method and update few output_adm.txt
+     with accurate ad-monitor (global_ocean.90x40x15, tutorial_global_oce_biogeo
+     and both tutorial_tracer_adjsens tests).
+   - switch 2 global_ocean.cs32x15 AD-tests to AB-2 (seaice_dynmix & thsice)
+     and turn off momDissip_In_AB in the 2 other (needed for stable AB-3).
+ o pkg/ctrl:
+   enable the use of a variable number (maxCtrlArr2D, maxCtrlArr3D) of
+   generic control variables via
+   #define ALLOW_GENARR2D_CONTROL and/or #define ALLOW_GENARR3D_CONTROL
+   Only required customization should be S/R ctrl_map_ini_genarr.F
+   (routine in repository contains example)
+ o pkg/exf:
+   - fix and refine checking of surface-relaxation setting when using EXF
+ o verification (adjoint exp):
+   - reduce length of simulation by half for experiment global_ocean.cs32x15
+     (std, seaice & seaice_dynmix) and exp tutorial_dic_adjoffline; update output.
+ o pkg/mom_common (mom_u/v_bottomdrag), pkg/shelfice (shelfice_u/v_drag)
+   - replace if statements KE.ne.0 with KE.gt.0 to avoid sqrt of negative numbers
+     of KE that can occur with aggressive optimization
+   + put quadratic bottom drag calculation in separated loops (only done if
+     using bottomDragQuadratic)
+ o model/src: CG2D_NSA
+   - clean-up:  stop if cg2dNormaliseRHS=T and AUTODIFF
+      and replace GLOBAL_SUM calls with GLOBAL_SUM_TILE.
+   - in test-exp that uses CG2D_NSA (bottom_ctrl & tutorial_tracer_adjsens),
+      change cg2d residual target to be expressed in Wunits (=> do not normalise
+      RHS ; this fix global_max Pb with TAF); update output.
+ o verification/tutorial_tracer_adjsens:
+    improve parameter consistency (and get rid of warnings):
+    - use deltaTFreeSurf=deltaTtracer (better with NonLin FreeSurf);
+    - switch Temp Adv Scheme from 81 to 80 (no limiter since theta < 0 is physical)
+    - use staggerTimeStep (for stability) in som81; use default rotation period.
+ o pkg/exch2:
+   - with empty facet: fix compact-format (W2_mapIO=1) definition (was previously
+     reset to 0 = 1 long line in X)
+ o pkg/mdsio:
+   - fix reading of dimensions from meta file for large-size domain
+ o model/src:
+   - fix saltIsActiveTr setting for IdealGas eosType (eosType is 6 character long);
+   - to refine CS-grid check, add logical flag "hasWetCSCorners": true if using
+     Cubed-Sphere Exch with CS-corners inside the domain;
+     make new S/R INI_GLOBAL_DOMAIN from code in ini_linear_phisurf.F to calculate
+     globalArea and to set hasWetCSCorners.
+   - add warning if usingCurvilinearGrid and momAdvection in flux-form (missing
+     metric terms); stop if hasWetCSCorners=T and momAdvection in flux-form.
+   - re-activate the stop if useCDscheme and hasWetCSCorners=T (previously if
+     useCDscheme and useCubedSphereExchange).
+ o pkg/seaice/seaice_growth.F :
+   - compute the SEAICE_DISABLE_HEATCONSFIX term accordingly
+     for the (.NOT.useRealFreshWaterFlux).OR.(nonlinFreeSurf.EQ.0)
+     when the previous code was not correct.
+   - in all cases diagnoze the boundary condition mismatch to SIaaflux
+   - in the case of useRealFreshWaterFlux.AND.(nonlinFreeSurf.GT.0) add
+     that term to QNET (essentially to set the melt/freeze water to 0degC).
+     when SEAICEheatConsFix is true, so that the ocean+ice budget heat is closed.
+ o verification/global_ocean.cs32x15/input.seaice :
+   - add SEAICEheatConsFix in data.seaice, ensuring closed ocean+ice heat budget.
+   - add diagnostics (commented out) for budget test using my matlab codes (gcmfaces).
+   - update results (output.seaice.txt) accordingly.
+ o verification/lab_sea/input/data.seaice :
+   - remove SEAICEheatConsFix, which is now be tested
+     in global_ocean.cs32x15. The presently coded fix
+     is only consistent with real fresh water + nlfs.
+   - update results (output.txt) accordingly.
+ o pkg/salt_plume: added diagnotic for salt tendency (oceSPtnd).
+ o AD_CONFIG.h file:
+   - in genmake2: remove "#undef ALLOW_ECCO_OPTIMIZATION" from AD_CONFIG.h;
+   - remove #include "AD_CONFIG.h" from all included OPTIONS files and
+     add it explicitly in each fortran src file where it is needed.
+     motivation: header file AD_CONFIG.h is generated/modified after "make depend"
+     thus introducing potentially wrong dependency; therefore, better to include
+     it only where it's really needed, and after any other included OPTIONS file
+     (less tempting to bring conditional includes according to ALLOW_ADJOINT_RUN
+     or ALLOW_TANGENTLINEAR_RUN).
+ checkpoint63p (2012/07/06)
+ o pkg/autodiff:
+   - rename S/R INI_AUTODIFF to AUTODIFF_INIT_VARIA ;
+   - create new header file "AUTODIFF_PARAMS.h" for pkg/autodiff parameters
+     which are now read from new parameter file "data.autodiff" (inAdExact
+     previously in "data", use{KPP/GMRedi/SEAICE}inAdMode previously in data.pkg)
+   - add file "data.autodiff" in all verification/*/input_ad/ directories.
+   - add run-time parameter to turn On/Off SEAICEuseFREEDRIFT in adjoint/forward
+     mode (used in global_ocean.cs32x15.seaice_dynmix test exp.)
+ o verification/tutorial_tracer_adjsens/
+   - add extra sub-verification which uses "SOM" advection scheme
+     (2nd Order-Moment Advection Scheme, Prather Limiter) with
+       #define GAD_ALLOW_TS_SOM_ADV in GAD_OPTIONS.h
+     and in data:
+       multiDimAdvection=.TRUE.,
+       tempAdvScheme=81,
+       saltAdvScheme=81,
+ o model/src:
+   - introduce ALLOW_BALANCE_RELAX which allow the removal
+    of the global mean of relaxation terms by setting
+    balanceThetaClimRelax and balanceSaltClimRelax
+   - disable balanceEmPmR and balanceQnet in the case when useSeaice.
+    This case is now treated appropriately in seaice_growth.F
+ o pkg/seaice:
+   - do balanceEmPmR and balanceQnet based on the net fluxes
+     (SItflux) that enter the ocean+ice system rather than QNET
+     and EMPMR. Works best in real fresh water.
+   - SIatmFW, SIatmQnet, and SItflux computations had to be moved
+     out of the diagnotics bloc, and stored in global arrays.
+ checkpoint63o (2012/06/29)
+ o vertical mixing schemes:
+   - remove unused S/R CALC_BUOYANCY (left from branch-atmos merging)
+   - replace computation of density (in Function STATE1, opps_calc.F) by a call
+     to S/R FIND_RHO_SCALAR
+   - pass sigmaR to S/R PP81_CALC, MY82_CALC (but not yet used) and to GGL90_CALC
+     and use it for N^2 calculation in ggl90_calc.F (save 2 density computations);
+     affects output (vermix.ggl90) at truncation level.
+ o testreport:
+   - change adjustment of SIZE.h for mpi+mth testing: preserve enough tiles
+     (nSx,nSy) for the number of threads (from eedata.mth)
+ o model/src:
+   - remove 2nd set of calls at the top of initialise_varia.F (Adjoint part)
+     related to Non_Lin Free-Surf or Bottom-Control (but not longer necessary).
+ o verification/tutorial_tracer_adjsens/
+   - compile with ALLOW_CG2D_NSA
+   - run with nonlinFreeSurf=3
+   - update reference output_adm.txt
+ o tools/genmake2:
+   - add "-DHAVE_NETCDF" to the DEFINES list when NetCDF is available ;
+     refine usePROFILES switching off (only when NetCDF is not available).
+ o verification (atmospheric set-up):
+   - change eosType='IDEALGAS' to eosType='IDEALG' to match variable declaration
+ o pkg/profiles : refine profiles and files handling.
+ o model/src and pkg/ecco : introduce run-time switch usePROFILES.
+ o model/src/the_main_loop.F, forward_step.F and pkg/exf/EXF_OPTIONS.h :
+   - changes to use model/src/the_main_loop.F rather than the ecco version
+     in ecco type adjoint runs.
+ o model/src:
+   - move computation of recip of grid distance & area from INI_MASKS_ETC to INI_GRID
+   - move setting of h0Fac[C,W,S] from INI_LINEAR_PHISURF to INI_MASKS_ETC
+   - update_masks_etc.F: rename SMOOTH*_R4,R8 function to the corresponding type (RS,RL)
+ o model/src:
+   - fix S/R UPDATE_CG2D for ALLOW_DEPTH_CONTROL case (was empty before);
+     update output of test experiment bottom_ctrl_5x5.
+ o pkg/generic_advdiff:
+   - implement vertical bi-harmonic diffusion (for now, only for T & S and
+     only explicitly).
+ o verification/bottom_ctrl_5x5/
+   update reference output (results changed quite some time ago,
+   not sure when; but new reference results look ok in terms of grdchk)
+ o verification/1D_ocean_ice_column/
+   For verification purposes, the exact adjoint rather than an approx.
+   should be used (e.g., to comare against F.D. or TLM).
+   removed autodiff_inadmode*_ad.F routines in code_ad/
+   Update results/ accordingly.
+ o pkg/cal:
+   - change cal_getdate.F so that output date is function of input time only
+     (less ambiguous, not mixed up with input iteration number).
+   - fix calendarDumps for non-zero phase-lag (S/R CAL_TIME2DUMP).
+ o pkg/diagnostics:
+   - implement calendarDumps also for stats-diags
+   - implement calendarDumps also for snap-shot output (negative freq)
+   - for now, ignores calendarDumps if non-zero phase-lag.
+ checkpoint63n (2012/06/04)
+ o model/src:
+   - recompute rSurfW & S to ensure consistent column thickness (needed for rStar)
+     between Sum_k(hFac*drF) and rSurf-rLow, for now only when using pkg/shelfice;
+   - use h0FacC, W & S to compute hFac_surfC, W & S in calc_surf_dr.F (more
+     similar to calc_r_star.F); update results of experiment internal_wave and
+     tutorial_global_oce_in_p (affected @ truncation level).
+ o pkg/shelfice:
+   - add parameterisation of advective-diffusive flux into the ice shelf
+     according to Holland and Jenkins (1999), eq.22-33, as suggested by Jan De Ryd
+   - simply eps3/3a computation
+ o eesupp:
+  - add new CPP option (DISCONNECTED_TILES) to disconnect tiles (no exchange
+    between tiles, just fill-in edges assuming locally periodic subdomain) and
+    add corresponding exchange subroutines (EXCH0);
+  - new CG-solver version (_EX0) for disconnected-tiles special case.
+ o model/src (CG-solvers):
+  - modify Single-Reduction version (CG2D_SR) in case cg2dMaxIters is reached
+    (similar final residual output and max-Iter number as with standard version);
+  - allows to store and use lowest-residual solution (standard & _SR versions);
+  - cleaning up (remove old, commented out code, LETS_MAKE_JAM ...).
+  - by default, also compile CG2D_SR version (define ALLOW_SRCG in CPP_OPTIONS.h)
+ o eesup/src:
+  - global_vec_sum.F cleaning: add a BARRIER ; update comments ; remove ndef
+    ALWAYS_USE_MPI (no longer needed after fixing usingMPI settings - March 2012)
+ o pkg/salt_plume added to lab_sea/input_ad.noseaicedyn
+ checkpoint63m (2012/04/27)
+ o pkg/shelfice:
+  - account for partical cells in surface level below ice-shelf for hydrostatic
+    pressure calculion (set uniformFreeSurfLev to F); update isomip experiments.
+ o ad test experiments:
+  - update and rename to "ad_optfile.local" local AD-optfile specific to a
+    particular adjoint verification experiment (in verification/*/code_ad/)
+ o pkg/seaice & pkg/exf:
+  - Part two of ECCO-CLIVAR code merges.
+    Completes merge of seaice area relax. code.
+    Requires unified CPP option EXF_ALLOW_SEAICE_RELAX
+    to be set in EXF_OPTIONS.h since this pkg controls its I/O
+    (and avoids second CPP option in SEAICE_OPTIONS.h)
+  - change default value of costIceStart & costIceEnd to a valid date.
+  - add snowPrecip to HSNOW in seaice_growth
+ o pkg/ptracers:
+  - move ptracers summary and setup check into separated S/R ; add a check for
+    valid PTRACERS_Iter0 value (error+stop or just warning).
+ o pkg/cal (+ pkg/ecco):
+  - avoid calling a S/R with 2 times the same arg (FWD: unless both are only used
+    as input; and for AD, unless both are not differentiable (e.g., k index)).
+ o model/src:
+  - define internal flag "uniformFreeSurfLev" (=T when free-surface level-index
+    is everywhere k=1) to speed-up some calculations (by pass kSurf reference);
+    temporary set to usingZCoords value (to be changed to F when using shelfice).
+  - hydrostatic pressure: implement partial cell near the surface also for
+    Z-coordinates (for the case where uniformFreeSurfLev=F); replace test on
+    usingZCoords with test on uniformFreeSurfLev where needed (in NonHyd code).
+ o pkg/ctrl/ctrl_init.F:
+  - add a formal parameter to s/r ctrl_init_rec to print
+    xx_$(ctrl_valiable)_file for easier debugging
+  - move call of cal_* routines into the if-block where they are really
+    needed so that xx_$(ctrl_variable)_period can be 0 or -12 without having
+    to specify a startdate
+ o pkg/seaice:
+  - update comments in SEAICE_OPTIONS.h (+ similar update of lab_sea/code and
+    global_ocean.cs32x15/code versions).
+  - turn on seaice Multi-category (in data.seaice, SEAICE_multDim=7) for
+    verification experiment global_ocean.cs32x15.seaice and update results.
+ o pkg/exf:
+  - new S/R EXF_GETFIELD_START to return starting-time of a forcing field
+    (according to useExfYearlyFields).
+ o pkg/cal:
+  - move calendar setting & summary (previously in cal_readparams.F) into new
+    S/R CAL_INIT_FIXED to be called later in the initialisation process, once
+    length of the simulation is set (after SET_PARMS call); This is an attempt
+    to fix Pb when, e.g.: pkg/longstep, modifies the length of the run.
+  - For safety: keep a record of pkg/cal parameter settings status
+            to allow to STOP if one pkg/cal S/R is called too early.
+  - add a stop in all basic pkg/cal subroutines if called before setting is done.
+  - modify cal_getdate.F: stop when nothing was returned;
+    if called with myIter=-1, simply retrun modelBaseDate (1,2 = startDate_1,_2);
+    this allows to remove "cal.h" from seaice_read_parms.F & init_mnc_vars.F.
+ checkpoint63l (2012/04/04)
+ o pkg/bbl:
+   - fix call to FIND_RHO_2D in bbl_calc_rho.F (case multi-tiles per proc);
+     update global_with_exf output.yearly.txt file.
+ o pkg/cal:
+   - start to clean-up cal_set.F ; fix for the case where baseTime is non-zero.
+   - remove 2 unsused and very short (1 line only) functions ;
+   - remove unsused subroutines from AD-Diff list.
+ o model/src:
+   - start to implement clean wait to stop in initialization S/R (config_check.F,
+      packages_check.F, ini_parms.F and pkg/obcs/obcs_check.F + pkg/mypackage)
+ o folowing PRINT_MESSAGE changes:
+   - remove reminder multiple print to the same file (STDOUT) when multi-threads.
+ o pkg/bbl:
+   - modification so it can work with z*
+   - replace deltaT with dTtracerLev(k) for asynchronous time stepping
+   - global_with_exf/input.yearly verification; changes output.yearly.txt
+ o eesupp/src:
+   - PRINT_MESSAGE: use OpenMP critical instruction (similar to PRINT_ERROR);
+     writing to unit 0 (if unit=errorMessageUnit) extended to the case myThid=1
+   - CHECK_THREADS: specific code if using OpenMP threading: improve checking of
+     # of threads across processors (e.g., different env OMP_NUM_THREADS setting)
+   - improve special preliminary call to EESET_PARMS (if eedata is read 2 times).
+   - when using MPI, always set usingMPI=T ; set default accordingly and stop
+     if not consistent.
+   - ALL_PROC_DIE: add a BARRIER after MPI_FINALIZE call ; skip this when thread
+     argument is zero (in case called within single-thread section).
+ o pkg/fizhi:
+     clean-up turbulence cold-start switch: decided in fizhi_init_vars.F, stored
+     in common bloc (fizhi_coms.h) and then passed as argument up to S/R TURBIO.
+ o pkg/exch2:
+   - add argument "updateCorners" to S/R exch2_get_uv_bounds (enable to
+     activate EXCH_IGNORE_CORNERS in vector EXCH S/R).
+   - switch 1rst EXCH call to IGNORE_CORNERS (instead of UPDATE_CORNERS)
+     but keep the 2nd with UPDATE_CORNERS: this prevents overwriting good data
+     with bad ones coming from a not-yet-updated halo.
+     This should fix the problem when sNx <> sNy and GCD(sNx,sNy) < 2*Olx.
+ o pkg/frazil:
+     move FrzForcT diag from frazil_diagnostics_state.F to frazil_calc_rhs.F
+     http://mitgcm.org/pipermail/mitgcm-devel/2012-March/005384.html
+ o model/src/config_check.F: add a check for OLx>sNx/OLy>sNy
+ o verification/lab_sea
+   * #undef SEAICE_EXCLUDE_FOR_EXACT_AD_TESTING
+   * #define ALLOW_SST_CONTROL & ALLOW_SST_CONTROL
+   * nTimeSteps 3 -> 4
+   * changed reference output accordingly
+ o pkg/ctrl:
+   * fix ctrl_get_gen for xx_sst, xx_sss
+ o pkg/fizhi:
+   - fix 2 calls to S/R GRD2MSC (argument igrd) in update_earth_exports.F
+     update results of exp. fizhi-cs-32x32x40 (fail with only 6 digits for cg2d)
+   - by default, use new version of S/R GETPWHERE (#define TRY_NEW_GETPWHERE);
+     fix few out-of-bounds indices in referencing vars (initialise igrd to 1);
+     clean-up fizhi_turb.F (remove unused & uninitialised qdiaglsm array).
+ o pkg/gmredi:
+   - add diagnostic of Redi (main diagnonal) vertical diffusive flux of Temp
+ o pkg/fizhi:
+   - fix few initialisation and multi-tile Pb: aqualev & gridalt now pass the
+     (old)aces open64 tuv test.
+ o pkg/icefront: fix bug and reorder loop in icefront_init_varia.F
+ o pkg/mom_vecinv:
+   - fix 1 loop range in mom_vecinv.F to be like all the other loops which
+     set/update gu,gv/Diss (fix Pb of uninitialised fVerUkp in admom_vecinv
+     with non-lin free-surf).
+ o model/src: move k-loop outside of i/j-loops when (re-)computing R_low
+   in ini/update_masks_etc.F in order to avoid -O3 optimization problems with
+   some compilers (gfortran 4.6.0 on MacOS)
+ o momentum:
+   - separate fVer?(:,:,kUp) & fVer?(:,:,kDown) in argument list of MOM_FLUXFORM
+     & MOM_VECINV subroutines (to help TAF). This fixes Pb of uninitialised
+     fVer?(kUp) in admom_fluxform with non-lin free-surf or bottom control.
+ checkpoint63k (2012/03/17)
+ o model/src:
+    - selectAddFluid (ALLOW_ADDFLUID): add missing term in horizontal momentum
+      flux-form (mom_fluxform.F) and vertical momentum (calc_gw.F) equations.
+    - SOLVE_DIAGONAL: switch default to use adjoinable & vectorized version
+      (#undef SOLVE_DIAGONAL_LOWMEMORY); update output of exp. front_relax.bvp.
+ o model/src: solve_*diagonal.F
+    - replace division with multiplication by inverse (similar to original version)
+      update output of AD exp. global_ocean.90x40x15.
+    - fix pkg/gmredi/gmredi_calc_psi_bvp.F & pkg/ggl90/ggl90_calc.F
+      to enable the use of the vectorized & differentiable solve_tridiagonal.F
+    - test exp. global_ocean.90x40x15/input_ad: switch to advection scheme 20 for
+      vertical advection (to get solve_tridiagonal tested in AD mode).
+ o pkg/seaice: ECCO-CLIVAR merge:
+. seaice AREA relaxation
+      * CPP option: SEAICE_ALLOW_AREA_RELAXATION
+      * runtime flag: SEAICE_tauAreaObsRelax
+. modified global mean cost imbalance code: CPP option
+       ALLOW_SSH_GLOBMEAN_COST_CONTRIBUTION
+ o another iteration on solve_*diagonal.F
+    Make choices independent of AUTODIFF
+    Default will be the adjoinable vectorized version.
+    Alternative choices are:
+    * non-adjoinable original version with low memory footprint:
+      #define SOLVE_DIAGONAL_LOWMEMORY
+    * still adjoinable but does not vectorize (k as inner-most loop):
+      #define SOLVE_DIAGONAL_KINNER (keeping SOLVE_DIAGONAL_LOWMEMORY undef)
+ o testreport
+  - add option to use a home made wrapper around "make"
+  - remove MITGCM_IEEE env. variable (no longer active)
+ o pkg/shelfice
+  - improve computation of friction velocity for velocity dependent
+    exchange coefficients: include velocities into SHELFICEBoundaryLayer
+    block to average velocities vertically
+  - add TAF store directives for SHI_ALLOW_GAMMAFRICT
+ o Modify diagonal solvers, now three versions (upon request):
+   #ifndef SOLVE_DIAGONAL_AUTODIFF
+. default version (dating back a while ago)
+   #else /* def SOLVE_DIAGONAL_AUTODIFF */
+   # ifdef SOLVE_DIAGONAL_KINNER
+. adjoinable version with k-innermost loop (G. Forget)
+   # else
+. adjoinable vectorized version of 2.
+   # endif
+   #endif /* SOLVE_DIAGONAL_AUTODIFF */
+   All flags are currently set within routines, but could/should be moved to CPP-options.
+   Array bounds for 1. are as before, for 2.,3. cover the entire domain
+   (could be changed for 1. too).
+ o verification/lab_sea (fwd):
+   - update the 4 fwd lab_sea test experiment: no longer SEAICE_GROWTH_LEGACY,
+     use 7 categories (except hb87), new solve4temp params (except salt_plume),
+     constant salinity (=4) or variable salinity (salt_plume) done through
+     SItracer.
+ o pkg/seaice:
+   - rename parameters: SIsalFrac to SEAICE_saltFrac & SIsal0 to SEAICE_salt0;
+   - remove old parameters ( SEAICE_freeze, SEAICEturbFluxFormula, SEAICE_gamma_t,
+      SEAICE_gamma_t_frz, SEAICE_availHeatTaper & SEAICE_availHeatFracFrz)
+     from SEAICE_PARMS.h ; still need to fix seaice_cost_sst.F (broken when
+     SEAICE_freeze got retired) but already better than previously with
+     SEAICE_freeze=123456.7 deg.C;
+   - move setting of facOpenGrow/Melt from SEAICE_INIT_FIXED to SEAICE_READPARMS
+     (safer multi-threaded setting); always set SEAICEuseEVP;
+   - setting of ocean-ice turb. flux coeff: moved from SEAICE_CHECK to
+     SEAICE_READPARMS & SEAICE_INIT_FIXED (this fixes wrong summary report);
+     stop if multiple specifications for the same coeff; make sure default
+     SEAICE_mcPheePiston is compatible with drF(1) & deltaT.
+ o pkg/obcs:
+   - allow to switch to upwind 1rst order advection scheme for the advective
+     flux computation at the open-boundary; disabled for adjoint built.
+ o pkg/ptracers:
+   - rename PTRACERS_RESTART.h -> PTRACERS_START.h
+   - rename ptracers_fields_blocking_exchanges.F -> ptracers_fields_blocking_exch.F
+   - add parameter to decide when to start a tracer; use internal flag to
+     know which tracer to step-forward; switch this internal flag at the top
+     of forward_step.F (new S/R PTRACERS_SWITCH_ONOFF); for now, not enabled
+     for adjoint built.
+ o pkg/seaice:
+   - add SEAICE_SIZE.h anywhere in the code where SEAICE.h is included ;
+   - move MULTDIM declaration and setting from SEAICE.h to SEAICE_SIZE.h ;
+   - keep experiment offline_exf_seaice truly single category (set MULTDIM=1).
+ o pkg/ecco:
+   - fix writing of output file DiagnosCost_ClimSalt/Theta
+     and DiagnosCost_DriftSalt/Theta (if multi-tiles per proc).
+ o pkg/seaice:
+   - add missing initialisation of COR_ICE array in dynsolver.F
+   - merging SEAICE_MULTICATEGORY define and undef cases. Now the same code is
+     compiled either way, and is tested in all exps (multidim was only tested
+     in lab_sea ad before).
+   - cosmetic change to prepare for future addition of ITD. no change to results.
+     no defaults change.
+   - added run time param SEAICE_multDim (7 for SEAICE_MULTICATEGORY, 1 otherwise).
+   - by lack of adequate verification experiments, I further used custom versions
+     of global_ocean.cs32x15 to test multicat or not, with pickup or not. All
+     should be correct.
+   - avoid recomputations in ad.
+ o array initialisation in adjoint mode:
+) pkg/mom_common/mom_calc_ke.F:
+     add full array initialisation of KE inside mom_calc_ke.F (ALLOW_AUTODIFF_TAMC):
+     The S/R which calls MOM_CALC_KE initialises KE but in some recomputation
+     part this initialisation is gone, resulting in Floating Point Exception
+     (caught by open64 compiler with debug option).
+) model/src/convective_weights.F
+     set output convectCount over the full array range (instead of doing
+     an update): this fix a similar issue when called within recomputation (adjoint)
+     which could by-pass the initialisation (normally done in the caller S/R).
+ o pkg/seaice:
+   - final version of turbulent flux params, as agreed at MIT ice meet:
+        SEAICE_mcPheePiston (default is ~ 0.000875)
+        SEAICE_mcPheeTaper (default is 0.)
+        SEAICE_frazilFrac (defualt is 1.)
+        SEAICE_mcPheeStepFunc (default is false)
+   - changes results at trunction error level
+   - ifdef SEAICE_EXTERNAL_FLUXES, disallow SEAICE_waterAlbedo
+ o added pkg/frazil:
+   - see frazil_description.tex for details
+   - verification experiment is global_with_exf/input.yearly; changes output.yearly.txt
+ o pkg/shelfice/shelfice_thermodynamics.F
+   - fix exponents for velocity dependent exchange coefficients: change
+     from 2/3(=0) to 0.66666666666666667
+   - move computation of velocity dependent exchange coefficients into
+     separate loop, so that it applies to both thermodynamics
+   - move some divisions by constants out of loops
+ checkpoint63j (2012/02/16)
+ o pkg/seaice:
+   - overhaul of seaice_summary.F after feb 2012 clean-up of seaice_growth.F etc.
+   - SItracer:  added run time params, and allow coupling to ocn salinity.
+ o pkg/seaice: remove (almost) all divisions by constants within loops
+   in seaice_growth.F and seaice_solve4temp.F, this changes (only) the cg2d
+   results of global_ocean.cs32x15.seaice from 16 to 11 digits (but only
+   those, caused by 1/QI -> recip_QI) -> update output.seaice.txt,
+   output_adm.seaice_dynmix.txt and also lab_sea: output_adm.evp.txt
+ o pkg/seaice :
+   - simplify McPhee tapering, and allow to use it with SEAICEturbFluxFormula
+     = 1 or 2, using newly added run time parameter SEAICE_availHeatTaper.
+   - fix d_AREAbyATM, d_AREAbyOCN, d_AREAbyICE diags I broke in r1.148.
+   - add permanent SItflux diag that corresponds to TFLUX but includes
+     ice+snow. Hence SItflux-TFLUX should match the ice+snow heat budget.
+   - allow activation/testing of a fix for suspected missing term in
+     ocn-ice heat budget (to be confirmed). To test this, you want to
+     undef SEAICE_DISABLE_HEATCONSFIX, and then set the run time param
+     SEAICEheatConsFix to .TRUE. that also allows the 'SIaaflux' diagnostic.
+   - no change in results, fwd or ad.
+ o global_ocean.cs32x15/results: 3 changes following from the pkg/seaice commit below:
+   - switch to variable freezing point.
+        Results change : cg2d -> 1 digits; ad -> 3-6-6 digits.
+   - bug fix : the sublimation term that was missing is now activated.
+        Results change : cg2d -> 2 digits; ad -> 8-6-6 digits.
+   - bug fix : flooding sign term for SIsal0.NE.0.
+        Result change : cg2d -> 8 digits; ad -> 11-12-9 digits.
+ o pkg/seaice:
+   - unified freezing point treatment : the old SEAICE_VARIABLE_FREEZING_POINT
+     is now the default, and the old default constant freezing point is recovered
+     with SEAICE_tempFrz0    = -1.96,
+          SEAICE_dTempFrz_dS = 0.,
+   - retire SEAICE_freeze (= the old way of specifycing the constant freezing point)
+   - remove ALLOW_SEAICE_FLOODING brackets; run time switch is already there.
+   - bug fix (thanks to M. Losch) : the sublimation term that was missing is now
+     activated. To reproduce old results with this bug define SEAICE_DISABLE_SUBLIM.
+   - bug fix (silly me) : flooding sign term (seaice_growth.F r 1.149line 1211)
+     was wrong for SIsal0.NE.0. Changes cs32x15 results (see above item for detail).
+   - bug fix (thanks to O. Jahn) : area loss for melting  got messed up in
+     seaice_growth r149 for legacy branch (no results change).
+   - introduce SEAICE_CAP_SUBLIM : caps sublimation heat flux in solve4temp (code
+     from I. Fenty).
+   - results did not change except for global_ocean.cs32x15, mostly due to the
+     switch to variable freezing point (see above item for detail).
+ o pkg/thsice:
+   - fix and simplify interface to salt_plume pkg ; diagnose directly amount of
+     seawater freezing in thsice_calc_thickn (not used).
+ o pkg/seaice: turbulent flux term specification via run time params.
+   - replace CPP switches with run time switches to facilitate testing
+   - retired CPPs : MCPHEE_OCEAN_ICE_HEAT_FLUX,
+                    GRADIENT_MIXED_LAYER_TURBULENCE_FACTOR
+   - added runtime parameter : SEAICEturbFluxFormula
+   - move Mcphee constants to SEAICE_PARAMS.h
+   - seaice_readparms.F : read turbulent flux term params (SEAICEturbFluxFormula;
+              SEAICE_availHeatFrac/Frz, or SEAICE_gamma_t/_frz if apply);
+              remove seaice_summary call (moved to seaice_init_fixed)
+   - seaice_init_fixed.F : set SEAICE_availHeatFrac/Frz depending on
+     SEAICEturbFluxFormula, and seaice_summary call (moved from seaice_readparms)
+   - seaice_summary.F : add missing report of read turbulent flux term set up
+                        and SITRACER.
+   - seaice_check.F : check range; inform and stop if retired CPPs are used
+                      (incl. SEAICE_AGE).
+   - seaice_growth.F : unified use of SEAICE_availHeatFrac/Frz, without
+          CPP switch, same computation as before for the different options.
+   - change results at the truncation level.
+ o pkg/seaice:
+   - remove un-used parameters LAD & MAX_TICE ; add new run-time parameters:
+     useMaykutSatVapPoly (default=F), postSolvTempIter (default=2) and
+     SEAICE_wetAlbTemp (default=-1e-3). Remove option SEAICE_SOLVE4TEMP_LEGACY.
+   - update verification/*/input*/data.seaice:
+     to reproduce previous results with former #defined SEAICE_SOLVE4TEMP_LEGACY
+     code, set useMaykutSatVapPoly=T & postSolvTempIter=0 ;
+     and to reproduce previous results with former non-SOLVE4TEMP_LEGACY code,
+     set SEAICE_wetAlbTemp=0 & SEAICE_snowThick=0.
+ o pkg/seaice/seaice_solve4temp.F (SOLVE4TEMP_LEGACY):
+   - remove LEGACY code for solving for tsurf (A1,A2,A3) but maintain the same
+     algorithm (same choice: useMaykutPolySatVap=T, postSolvTempIter=0);
+     difference in results only due to machine truncation.
+   - remove MAX_TICE (tsurf is always =< TMELT anyway); keep MIN_TICE if using
+     MaykutPolySatVap; keep MIN_LWDOWN.
+   - adapt SEAICE_MODIFY_GROWTH_ADJ code (untested) to non-legacy formulation.
+   - update output of verification exp. lab_sea (4 fwd: 11 cg2d digits except hb87,
+     + 3 AD: 6 digits except evp) and offline_exf_seaice.seaice (12 digits).
+ o pkg/salt_plume:
+   - isolate saltPlumeFlux array exch into a specific S/R called from
+     do_oceanic_phys.F
+   - add interface to pkg/salt_plume (filling of saltPlumeFlux) in pkg/thsice.
+ o verification:
+   - move untested set-up to MITgcm_contrib/verification_other.
+ o pkg/seaice:
+   - retire old way of SEAICE_AGE. Now replaced with ALLOW_SITRACER.
+ o pkg/seaice:
+   - seaice_solve4temp.F (keeping results unchanged):
+     * add 2 future run-time params to select which saturation vapor pressure
+       formula is used and how post-iteration fluxes are set.
+       Temporary set these 2 params according to option SOLVE4TEMP_LEGACY;
+     * New piece of code (not used) to update surf. atmos. heat flux F_ia using
+       the linearized expression to stay consistent with tsurf finding.
+   - seaice_freedrift.F avoid floating exception in sqrt(y) since y=sqrt(x*x)-x
+     can be < 0.
+ o pkg/seaice/seaice_solve4temp.F (SOLVE4TEMP_LEGACY undef):
+   - remove from F_ia (and from it's derivative dFiDTs1) the contribution of
+     conductive heat flux F_c , and add it explicitly when updating tsurf as
+     solution of: Fc = Fia + d/dT(Fia - Fc) *delta.tsurf
+     so that now F_ia has a consistent meaning through the entire routine.
+     This causes differences at truncation level: update output of fwd exp.
+     global_ocean.cs32x15.seaice.
+ o pkg/seaice:
+   - lots of editing/cleaning in seaice_solve4temp.F + better documentation
+     of arrays, sign/direction of fluxes; no effect on results.
+   - replace hard coded 273.16 (=previous value of celsius2K) by celsius2K
+     in seaice_budget_ocean.F & seaice_solve4temp.F (SOLVE4TEMP_LEGACY part);
+     note: this should have been done before changing celsius2K default.
+   - to keep results unchanged, add back old value of celsius2K in verification
+     exp. input*/data : lab_sea (AD), offline_exf_seaice (fwd+AD) & seaice_obcs
+   - replace hard coded seawater freezing temp in seaice_solve4temp.F (part
+     SOLVE4TEMP_LEGACY) of 271.20 (=previous value of celsius2K + default
+     value of SEAICE_freeze) by celsius2K+SEAICE_freeze so that seawater
+     freezing temp is consistent with value in seaice_growth.F ; this causes
+     differences at machine truncation level: update lab_sea AD output (3/4).
+ o pkg/seaice:
+   - mask (in exf_init_fixed.F) atemp,aqh,evap,precip,runoff,lwflx,areamask
+     and climsst/sss even when using seaice (to prevent calculation that might
+     use SST on land); does not affect any verification exp.
+   - apply mask to taux,tauy (in seaice_get_dynforcing.F); update output
+     of lab_sea.fd & lab_sea.hb87 and global_ocean.cs32x15.seaice_dynmix.
+ o pkg/seaice/seaice_growth.F: add mask to avoid non-zero ice thickness
+   over land (non-legacy code)
+ o vectorize salt_plume package:
+   - add extra code to salt_plume_frac and salt_plume_tendency_apply_s
+   - this code computes plumebk everywhere (also over land), thus requires
+     code to avoid divisions by zero and catch the case of kLev=Nr.
+   - efficiency of salt_plume_frac is still sub-optimal
+ o tools (genmake2):
+   - fix makefile NAME specification (option: -makefile NAME) by adding
+     "-f $MAKEFILE" in few places where it was missing including makedepend
+     command (contribution from Paul).
+ checkpoint63i (2012/01/24)
+ o model/src:
+   - add factorized versions of some EOS code to find_rho.F,
+     define USE_FACTORIZED_EOS to turn it on (default for TARGET_NEC_SX)
+ o model/src:
+   - add celsius2K to namelist PARM01; remove unused recip_rhoNil from PARAMS.h;
+   - change default celsius2K from 273.16 to 273.15
+   - to keep results unchanged, add back old value of celsius2K in verification
+     exp. input*/data : aim.5l_cs, 1D_ocean_ice_column, lab_sea (fwd),
+      global_ocean.cs32x15(seaice) & cpl_aim+ocn(input_atm).
+ o model/src: add a little initialisation trick to find_rho.F and find_alpha.F
+   to make TAF generate vectorizable code
+ o pkg/seaice/seaice_evp.F: add code (copied from CICE) that avoids underflows.
+    Turn on by defining SEAICE_EVP_ELIMINATE_UNDERFLOWS. Most compilers
+    have flags that do this more efficiently.
+ o pkg/diagnostics/diagstats_calc.F
+   - for TARGET_NEC_SX fix the treatment of the scaling factor tmpFac=scaleFact
+ o pkg/obcs (with exch2):
+   - derive OB indices in overlap region from OB-InsideMask (in obcs_init_fixed.F)
+     and remove code (in obcs_readparms.F) which was based on EXCH of indices
+     (through buffer) and did not account for exch2 (e.g., CS-grid) topology.
+ o pkg/exf and seaice exp:
+   - change offline_exf_seaice.seaicetd test exp. to use default DIFF1 value (=0)
+     so that switching off area & heff advection flags does not affect results.
+   - change default EXF_LWDOWN_WITH_EMISSIVITY to #define in EXF_OPTIONS.h
+   - keep exp. seaice_obcs & 1D_ocean_ice_column(ad) unchanged (using #undef
+     EXF_LWDOWN_WITH_EMISSIVITY) and, using pkg/exf default emissivities, update
+     results of verification experiments: 1D_ocean_ice_column(fwd),
+     global_ocean.cs32x15.seaice(fwd+ad) & seaice_dynmix(ad), lab_sea (all 8)
+     and offline_exf_seaice (all 4).
+ o pkg/seaice:
+   - remove array YNEG, RIVER, TMIX (replaced by local var) from common block;
+     remove also areaNm1 & hEffNm1 when SEAICE_GROWTH_LEGACY is undef.
+   - fix bug: areaNm1 & hEffNm1 are needed in seaice_growth (SEAICE_GROWTH_LEGACY)
+     but were not filled when resp. SEAICEadvArea=F & SEAICEadvHeff=F and
+     not multi-dim advection;
+   - fix seaice_growth.F to compile with both SEAICE_GROWTH_LEGACY and
+     SHORTWAVE_HEATING #undef.
+ o optim: make Makefile more robust (?)
+ o pkg/obcs:
+   * fix treatment of obcs_read_pickup for TAF
+ o pkg/shelfice:
+   * add missing initialisation of num_shifwflx
+   * new adjoint verification exp. for isomip
+   * change Prandtl and Schmidt numbers from generic formulations
+     (in terms of model diffus. and visc.) to separate runtime
+     parameters, with Holland and Jenkins (1999) default values.
+ o pkg/exf (interpolation):
+   - extended input field (2 rows) near the N & S poles:
+     * fill in with the symetric value (when even Nb of data in longitude)
+     * add average value at the poles only for scalar quantities ; for vector
+       component interpolation, skip the averaging and keep duplicated values,
+       unless the 2 components have same location (uvInterp=T) in which case
+       interpolate the 2 components together using S/R EXF_INTERP_UV.
+   - new S/R EXF_INTERP_UV to interpolate the 2 components of a vector field
+     together: this allows to account properly for local orientation when
+     averaging at N & S pole.
+   - add CPP option EXF_USE_OLD_INTERP_POLE to recover old results regarding
+     exf-interpolation near N & S poles. Undef by default.
+   - add debug check/print on 1rst iter if debugLevel >=2.
+ o pkg/exf:
+   - change masking flags definition (no longer "parameter"), put them in
+     common block and set them in S/R EXF_INIT_FIXED.
+   - change recognized masking flag from s,u,v to c,w,s since the mask
+     to use (maskC,W,S) depends on position on model grid and has little to
+     do with scalar/vector difference; fix masking if using P-coordinates.
+   - fix masking of wind-stress (was wrong if interpolated or read on A-grid)
+     and update results of exp. global_with_exf (x2).
+   - fix setting of zenith-angle table when SHORTWAVE_HEATING is undef.
+ o pkg/obcs
+   - S/R obcs_calc_stevens: fix a small bug (gammat -> gammas where appropriate)
+ o pkg/exf (interpolation):
+   - assume periodicity in X only if input field cover full longitude range.
+   - improve search for lat. index (supposed to be faster, in ~log2(ny) steps,
+     and should vectorise).
+   - fix input lat of the 2 added row (in case we provide N.pole data).
+ checkpoint63h (2011/12/30)
+ o pkg/seaice:
+   - change declaration of UVM from _RL to _RS in order to get B-grid
+     uIce,vIce monitor when _RS = real*4
+ o pkg/offline:
+   - new S/R OFFLINE_RESET_PARMS for resetting main-model params (switch off flags);
+   - compute vertical velocity if not read from file (switch on exactConserv
+     & staggerTimeStep);
+   - fix output of ptracer monitor iter & time for default PTRACERS_monitorFreq.
+ o verification:
+   - update grid-files (in tutorial_held_suarez_cs/input and fizhi-cs-32x32x40/input)
+     with grid-angle generated using "utils/matlab/cs_grid/cubeCalcAngle.m":
+     fix Pb in yG definition @ 2 missing corners (previously yG was averaged);
+   - update output of exp. global_ocean.cs32x15.viscA4 after changing
+     grid-file angles (used here for coriolis-3d);
+   - remove (or gzip) few files not needed to run fizhi-cs experiments.
+ o pkg/exf (vector interpolation):
+   - rotate vector component toward local grid-axis orientation using grid-angles
+     (stored in GRID.h) instead of locally computed rotation angle; keep old code
+     available with exf option EXF_USE_OLD_VEC_ROTATION (undef by default).
+ o pkg/seaice:
+   - allow to compile with exf options ALLOW_ATM_TEMP or ALLOW_DOWNWARD_RADIATION
+     undefined. Fix and remove the stop when ALLOW_RUNOFF is undefined.
+ o pkg/PKG_OPTIONS.h files:
+   - move #include "CPP_OPTIONS.h" just after #include "PACKAGES_CONFIG.h",
+     outside of the #ifdef ALLOW_THISPKG / #endif block.
+   - update verification/*/code/PKG_OPTIONS.h files.
+ o add a verification experiment (offline_exf_seaice/input.seaice) that test
+   the B-grid LSOR solver
+ o pkg/seaice: sort out emissivity and long wave radiation step 2:
+   - add emissivity for snow and ice as new run-time parameters
+     (unfortunately) that default to the corresponding exf values; this
+     changes results in most verification experiments so that for backward
+     compatibility these parameter have to be set explicitly to inconsistent
+     values (ugly);
+   - the exf-flag EXF_LWDOWN_WITH_EMISSIVITY then gets rid off the hard-wired
+     emissivities of 0.97 associated with lwdownloc in S/R seaice_solve4temp
+     until we agree how to handle this bug properly
+ o pkg/exf (interpolation):
+   - add a set of run-time param ({inputfield}_interpMethod), one for
+     each interpolated input field, to select the interpolation method
+     with a value of zero switching off the interpolation;
+   - print interpolation parameters to standard output;
+   - refine exf_check.F accordingly ; stop if USE_NO_INTERP_RUNOFF is defined
+     (to use instead runoff_interpMethod=0 in data.exf).
+   - simplify default setting of interpolation parameters (for all fields,
+     set position to match model grid cell-center position, leading to trivial
+     interpolation in case of regular Lat-Lon grid) and fix for the case of
+     non-uniform delY.
+ o pkg/exf/exf_radiation.F: add the factor ocean_emissivity to lwdown, for
+    within #ifdef EXF_LWDOWN_WITH_EMISSIVITY/#endif. Unless ocean_emissivity=1.
+    this factor is absolutely required, because the lw exitance (= out-going
+    long wave radiation) is emissivity*stefanBoltzmann*T^4 + rho*lwdown,
+    where the reflectivity rho = 1-emissivity for conservation reasons. Once
+    this is established, we can remove the CPP-Flag (if we want to).
+ o pkg/seaice:
+   - qualify a stop statement in S/R seaice_check: EXF_READ_EVAP and
+     ALLOW_BULKFORMULAE are only required if SEAICE_EXTERNAL_FLUXES is defined
+   - sort out emissivity and long wave radiation, step 1: make SEAICE_emissivity
+     what the name implies (and not emissivity*BoltzmannConstant), this means
+     the old default value of 5.5e-8 now means
+.5e-8/5.670e-8 = 0.97001763668430343479 as ocean_emissivity in
+     S/R exf_readparms
+   - FV-discretization of the B-grid LSOR solver, turn on with
+     SEAICE_LSRBNEW. This new solver also involves a slight re-organization
+     of the calling routine dynsolver, so that B and C-grid code look a
+     little more alike.
+   - fix index bugs in ostres.F (B-grid code)
+ o pkg/seaice/seaice_ocean_budget.F: change (unused) code to make it look better
+ o pkg/seaice/seaice_readparms.F: make ocean_emissivity*stefanBoltzmann the
+   default for SEAICE_emissivity, if useEXF; requires setting a wrong
+   parameter value in global_ocean.cs32x15/input.seaice/data.seaice for
+   backward compatiblity
+ o model/src: use sigmaR in calc_ivdc
+ checkpoint63g (2011/12/16)
+ o pkg/seaice/seaice_growth.F:
+   fix heat conservation of the coupled ocean-seaice system.
+   when SEAICE_HEAT_CONSERV_FIX is defined, the mismatch of
+   solid vs liquid water treatment is resolved via QNET.
+ o pkg/seaice/seaice_growth.F:
+   add missing term for sublimation in saltFlux, which was breaking conservation.
+ o pkg/seaice/seaice_model.F:
+   Remove this patholigical case treatment in evolution branch,
+   where it is un-necessary and breaks conservation.
+   Update global_ocean.cs32x15/results accordingly for
+   output.seaice.txt output_adm.seaice.txt and output_adm.seaice_dynmix.txt
+ o model/src:
+   useRealFreshWaterFlux: remove masking of EmPmP (using maskInC) in
+   external_forcing_surf.F and apply mask directly in S/R SOLVE_FOR_PRESSURE.
+ o pkg/obcs:
+   modify Stevens boundary conditions so that S/R obcs_calc_stevens computes
+   tendency for temperature and salinity that is then applied to update
+   theta and salt in S/R obcs_apply_ts; this requires proper masking of all
+   horizontal advection and diffusion contributions on the boundary (in
+   S/Rs gad_advection, gad_calc_rhs, gmredi_rtransport, gmredi_calc_diff), and
+   removing the mask in S/R timestep_tracer. The advantage of this approach is
+   that the updated tracer values include contributions from the surface
+   forcing and vertical diffusion.
+   This modification changes exp4.stevens because of vertical diffusion.
+ o model/src:
+   change non-curvilinear grid setting to also work with exch2 + blank tiles:
+   - move delX,delY to new header file (SET_GRID.h) and adjust length to 1rst
+     face dimensions.
+   - new S/R INI_LOCAL_GRID to define model tile-local grid (using same units
+     as delX,delY) and called from S/R INI_CARTESIAN_GRID, INI_CYLINDER_GRID
+     and INI_SPHERICAL_POLAR_GRID.
+   change test-experiment global_ocean.90x40x15:
+   - split the domain in many more tiles (9x4 tiles of 10x10 each);
+   - switch to exch2 and remove 1 blank-tile (but only for MPI test).
+   - update results of both test (std & dwnslp).
+ o pkg/diagnostics/diagstat_calc.F: fix problem with non-initialised halos in
+    tmp-fields for TARGET_NEC_SX at the cost of extra loops and less vectorisation
+ o model/src:
+   - take sigma-coords related code out of update_etah.F into new S/R UPDATE_ETAWS
+     and fix initialisation when using sigma-coords.
+ o model/src:
+  - improve Gael's changes from Jan 14, 2011 "addition of an 'update' of hfacc etc.
+    to their current value at the beginning of forward_step.F": add a new run-time
+    switch "doResetHFactors" (default=false) and use it to do (or not) the resetting.
+  - set doResetHFactors=T in the following test exp:
+     global_ocean.90x40x15/input (rStar) & input.dwnslp (linFS),
+     global_ocean.cs32x15/input.seaice (rStar), hs94.cs-32x32x5/input.impIGW (linFS)
+     and tutorial_global_oce_in_p (nonLinFS in p)
+ o pkg/ecco
+   - added IES cost term
+ o verification/advect_xz
+   - scale down the depth by 1/100 (from 200 km to just 2.km)
+   - add secondary test using divergent flow, r-star and implicit vertical advection.
+   - add note (check_conserve_TS.txt) and matlab script to check global
+     conservation of T & S with NonLin-FreeSurf and Adams-Bashforth.
+ o pkg/rbcs:
+   - add missing relaxUFile & relaxVFile in namelist (in rbcs_readparms.F).
+ o pkg/obcs (Stevens BCs):
+   - fix various problems in the phase speed computations of the Stevens
+     boundary conditions:
+     - sign error for western and southern boundaries,
+     - time tendencies were underestimated by factor of dTracerLev and some just
+       zero (for multidim advection schemes) -> now estimate time tendencies
+       from difference between previous (n) time level and the one before (n-1);
+       this requires storing a field per tracer per boundary, also in the pickup
+       files.
+     - replace deltaTmom in cflMer/Zon computation with dTracerLev
+     - set default phase velocity to cflMer/Zon
+   - update verification experiment exp4.stevens
+ o pkg/generic_advdiff (implicit_r):
+   - fix implicit vertical advection conservation with AB and/or NonLin-FreeSurf
+     (remove Tr*d/dz(w) in gad_implicit_r.F and add it in gad_calc_rhs.F);
+   - fix implicit vertical diffusion or advection with NonLin FreeSurf
+     (was using current recip_hFacC instead of future recip_hFacC): set future
+     recip_hFac in thermodynamics.F and pass & use it in all vertical implicit
+     solver S/R ;
+   - fill diagnostics of vertical advective fluxes (computed from tendency)
+     when using implicit vert. advection;
+   - update output of exp that uses NonLin-FreeSurf & implicit vertical diffusion:
+      global_ocean.90x40x15 (fwd+AD), global_ocean.cs32x15 (4 fwd +4 AD),
+      tutorial_global_oce_in_p (fwd), tutorial_tracer_adjsens (AD)
+      and cpl_aim+ocn (used in ocean); to be fixed: bottom_ctrl_5x5.
+ o pkg/diagnostics:
+   - add diags for T & S tendency which goes through Adams-Bashforth.
+ checkpoint63f (2011/11/30)
+ o pkg/obcs/obcs_calc_stevens.F:
+   - join some loops to reduce number of if-statements
+   - fix a bug in code for northern and southern boundaries.
+ o pkg/seaice/seaice_init_varia.F
+   - undo resetting UVM=0 that has slipped in unnoticed in r1.49 and
+     caused zero ice-velocities for the B-grid code
+ o pkg/seaice/seaice_init_fixed.F
+   - fix a bug in the initialisation of the second metric terms
+     k2AtC and k2AtZ: k2AtC was set to the value of k2AtZ and k2AtZ was 0.
+   - this affects all seaice configurations with useCurviLinearGrid = .true.
+     and SEAICEuseDynamics = .true. (default) and SEAICEuseMetricTerms
+     = .true. (default)
+   - the only verification experiment affected is global_ocean.cs32x15:
+     icedyn, seaice, and seaice_dynmix (AD)
+ o pkg/thsice/thsice_diagnostics_state.F
+   - only for TARGET_NEC_SX: initialise all of tmpFld, so that overlap does
+     not contain garbage that can lead to surprises in diagstats_calc.F
+ o model/src:
+   - move bi,bj loops inside INTEGR_CONTINUITY ;
+   - call INTEGR_CONTINUITY directly from forward_step.F
+     (previously called from momentum_correction_step.F)
+   - call UPDATE_ETAH from integr_continuity.F and update initialise_varia.F,
+     forward_step.F and pkg/ecco/the_main_loop.F
+ o model/src/do_oceanic_phys.F:
+   - reset addMass to zero only if useICEFRONT ;
+   - separated k-loop for rhoInSitu calculation ;
+   - add 2 diagnostics for wVel*delta^k(Rho) at constant pressure (= WdRHO_P)
+     and at constant T,S (= WdRHOdP);
+   NOTE: change diagnostics WRHOMASS : this is now simply the Vertical transport
+     of In-Situ Density (Anomaly) (=wVel*rho^bar-k) (previously was Vertical
+     transport of locally-referenced potential density);
+     to recover old diag: (WRHOMASS)_old = (WRHOMASS)_new -1/2 * (WdRHOdP)
+ o gluemnc:
+   - replace ncrcat with ncks when adding variables to *.glob.nc
+   - change the way variables without record dimensions are handled so that
+     files that have variables with and without record variables can be glued:
+     add a record dimension with a new unique name to be able to differentiate
+     between variable with and without a-prior record dimensions. Remove
+     this record dimension before adding the variable to the *.glob.nc file.
+     This procedure automatically works also for grid.*.nc files that do not
+     have any record dimension.
+ o verification/cpl_aim+ocn:
+   - generate new reference output on baudelaire (gfortran, mpich2) (previously
+     from old aces-grid cluster, ao + ifort) and update 'run_cpl_test' script.
+ o pkg/obcs/obcs_calc_stevens.F:
+   - add code for northern and southern boundaries.
+   - reorder some loops to save some operations and so that drFBar can be scalar
+ o model/src:
+   - re-arrange extrapolation calculation in Adams-Bashforth S/R (affects machine
+     truncation) and add diagnostics for Adams-Bashforth tendency increment.
+   - update test-exp. AD output:
+D_ocean_ice_column, bottom_ctrl_5x5, lab_sea.noseaicedyn, obcs_ctrl;
+   and FWD output: exp4 (x3), fizhi-cs-32x32x40, fizhi-cs-aqualev20,
+     front_relax (x3), global_ocean.90x40x15 (x2), global_ocean.cs32x15 (x5),
+     global_ocean_ebm, ideal_2D_oce, internal_wave, isomip (x3), lab_sea (x4),
+     matrix_example, MLAdjust (x5), natl_box (x2), tutorial_advection_in_gyre,
+     tutorial_global_oce_in_p, tutorial_global_oce_latlon and
+     tutorial_plume_on_slope.
+ o pkg/diagnostics/diagstats_calc.F: add special code for TARGET_NEC_SX
+   that vectorises. This code uses 3 extra 2D fields, F90 array assignments
+   and F90 intrinsic routines SUM, MINVAL, MAXVAL, but since TARGET_NEC_SX
+   does not even come with an F77 compiler anymore, this should not be
+   a limitation
+ checkpoint63e (2011/11/06)
+ o pkg/seaice adjoint of LSR:
+   - substantially rework STORE dirs.
+   - add new flag SEAICE_LSR_ADJOINT_ITER and parameter SOLV_MAX_FIXED
+     this flag will do SOLV_MAX_ITERS but only store SOLV_MAX_FIXED fields
+     and only perform SOLV_MAX_FIXED adjoint iters.
+     If flag SEAICE_LSR_ADJOINT_ITER is undef-ined, the store in the iteration
+     always goes to same record, meaning that the last forward field will be
+     the one used in the adjoint - an approximation.
+   - now produces non-zero LSR-related gradients, and acceptable gradients for
+     An's zonal (x-z) test case (to be checked in)
+   - lab_sea: produces acceptable gradients for lab_sea with forward/backward LSR
+     (but these are screwed up by the thermodynamics in the first place);
+     reduce from 4 to 3 timesteps to avoid t.d. issue as temporary solution;
+     output_adm.txt also reflects changes to seaice_lsr
+   - global_ocean.cs32x15:
+     * the "default" input_ad.seaice has been re-defined to always exclude dynamics
+       (output_adm.seaice.txt was updated)
+     * new input_ad.seaice_dynmix tests a forward LSR / backward free-drift
+       (output_adm.seaice_dynmix.txt)
+ o test-exp. exp4+stevens:
+   - switch off pTracers and nonHydrostatic (restart problems with NH); update output
+ o pkg/seaice (lsr solver):
+   - put coriolis term into FORCEX,Y (as in seaice_evp.F; previously in rhsU,V only);
+     update output (change truncation) of FWD test exp lab_sea & global_ocean.cs32x15
+   - fix SEAICEuseFREEDRIFT for new OBCS version (ndef OBCS_UVICE_OLD)
+   - new parameter "LSR_mixIniGuess" allows (if=2,4) to mix free-drift solution
+     into initial guess for linearised solver; use weight ~ (1/err)^2,4.
+   - compute (with new S/R) and print initial (+ free-driff sol. if available)
+     and final residual of linearised system.
+ o pkg/pp81: add diagnostics for vertical eddy viscosity and diffusivity
+   (requires new subroutines pp81_init_fixed.F/pp81_diagnostics_init.F)
+ o pkg/obcs: Stevens BCs (still only for east and west)
+   - fix Stevens BCs by using intermediate velocities of previous
+     time step as "baroclinic" contribution rather velocity of one grid cell
+     inside the boundaries; more consistent but makes the entire treatment
+     more complicated, requires new pickup files and two new S/Rs:
+     obcs_copy_uv_n and obcs_save_uv_n
+     keep old version with flag OBCS_STEVENS_USE_INTERIOR_VELOCITY
+     (undefined by default)
+   - silently move computation of some grid factors into separate loops to
+     save some recomputations
+   - add a hack for non-linear free surface
+   - add a verification experiment to exp4 that tests this code
+ o make gluemnc/xplodemnc work with (moron) non-GNU shell tools
+ checkpoint63d (2011/10/25)
+ o pkg/obcs + seaice-dynamics:
+   - new implementation calls OBCS_APPLY_UVICE (in seaice_dynsolver.F) before
+     solving for uIce,vIce and prevent SEAICE_LSR or SEAICE_EVP to modify OB
+     values (consistent with an implicit method).
+   - add option OBCS_UVICE_OLD (in OBCS_OPTIONS.h, defined by default) to
+     return to older implementation (same results as before); note that none of
+     the "experimental" OBCS_SEAICE options are implemented in the new version.
+   - switch test exp. seaice_obcs to use new version (update output).
+ o pkg/seaice:
+   - add few stop (B-grid & CS-exch, B-grid & obcs, AUTODIFF & SEAICE_maskRHS)
+   - add parenthesis in Water-Ice drag calculations (evp & lsr);
+   - in seaice_lsr.F, simplify and fix AA3 setting in case sNx or sNy=1;
+     and fix case SEAICE_waterDrag=0 (but unstable if no or little seaice)
+   - update output of test exp lab_sea that uses evp or lsr (fwd+ad)
+     and global_ocean.cs32x15 (icedyn & seaice fwd+ad).
+ o pkg/layers:
+   - Include potential density as new coordinate (Thanks to David Munday)
+ o pkg/dic:
+   - Remove subroutine CALC_PCO2_APPROX_CO3 from carbon_chem.F and add
+     carbonate computation/output to CALC_PCO2_APPROX
+ o pkg/generic_advdiff
+   - make TAF generate code that vectorizes:
+     gad_dst3fl_adv_*.F, gad_u3c4_impl_r.F
+ o model/src:
+   - improve vectorization also for adjoint code of
+     solve_tridiagonal and solve_pentadiagonal. As this requires up to
+new 3D-fields, this code is only turned on for the combination of
+     ALLOW_AUTODIFF_TAMC and TARGET_NEC_SX. Also remove error message
+     for singular matrix check (only for TARGET_NEC_SX).
+   - remove hard-wiring of CPP-flag ALLOW_SOLVERS_KLOOPINSIDE to
+     ALLOW_AUTODIFF. This flag now needs to be set outside of
+     solve_tri/pentadiagonal.F
+ o pkg/exf:
+   - fix previous modif in exf_readparms.F (revision 1.66: treatment of
+     optional namelist EXF_NML_OBCS).
+   - add many debug-print (to trace down where pkg/cal error msg comes from)
+ o pkg/mom_vecinv/mom_vi_hdissip.F
+   - rearrange loops so that vectorization is improved and in particular
+     the adjoint routine vectorizes. The code is a little longer now, but I
+     think easier to read.
+     Note: CPP-flag MOM_VI_ORIGINAL_VISCA4 is not tested.
+ o pkg/seaice:
+   - allow to specify initial seaice velocity from files (uIceFile,vIceFile)
+ o pkg/exch2:
+   - alternative code (without tile x tile matrix) for cumulated (global) sum;
+     used as default; keep using matrix version in adjustment.cs-32x32x1.
+ o tools/build_options:
+   - after merging some MPI and/or multi-threads specific optfiles so that
+     the modified default optfile support both built (using genmake2 -mpi
+     for the MPI built, using genmake2 -omp for OpenMP built),
+     move now obsolete optfiles to tools/build_options/unsupported/
+    (add copy of email sent to support list in doc/optfiles_changes.txt)
+ checkpoint63c (2011/09/28)
+ o pkg/ebm:
+   - fix ebm_zonalmean.F for several procs in Ydir (nPy > 1); update output of
+     test exp. global_ocean_ebm (affects machine truncation, 12 digits for cg2d)
+ o pkg/seaice (SItracer pickup)
+ * Simple code for pickup of SItracer fields (#define ALLOW_SITRACER)
+   To be done:
+   - thorough testing of missing fields in S/R seaice_read_pickup
+   - thorough matching between generic tracers and specific fields used
+     (e.g. volume-weighted age, area-weighted age, salinity, ...)
+ o pkg/grdchk:
+   - all procs calculate and print finite-difference gradient (for testreport)
+   - change description output used by testreport;
+   - AD testing: also compare and report Finite-difference gradient;
+     => update all output_adm*.txt
+ o test exp. global_ocean_ebm:
+   - switch back useRealFreshWaterFlux (no problem anymore with run-off);
+     and turn on exactConserve; update (fwd) output.
+ o pkg/seaice (LSR):
+   - print to STDOUT number of solver iterations at SEAICE_monFreq interval.
+   - modify solver to deal cleanly with u/v switch at face edges (CS-grid):
+     * identical results with non-CS topology (but save up to half of EXCH calls)
+     * no much changes in cs-32 verification tests since no ice at face edges
+      (differences due to convergence criteria, since nb of iterations changed)
+     * expect some differences on lat-lon-cap grid.
+     update FWD results of global_ocean.cs32x15 test exp. (icedyn & seaice)
+ o pkg/exch2:
+   - add new CPP option to disable Cumul-Sum matrix (to save storage when using
+     many tiles); until alternative coding is added, just add a stop.
+ o pkg/kpp:
+   - move ptracer/salt correction to KPP diffusivity from calc_3d_diffusivity.F
+     to S/R KPP_CALC_DIFF_PTR (+ add tracer-index to argument list).
+ o optfiles:
+   - merged few MPI specific (*+mpi*) and multi-threads specific (*+mth) optfiles
+     into corresponding standard one, which now support different build:
+     (when using "genmake2 -mpi" for MPI built, "genmake2 -omp" for OpenMP built)
+   - add "darwin_amd64_gfortran" optfile (initially from Constantinos, tested by Gael)
+ o pkg/obcs (seaice):
+   - add missing EXCH for uIce,vIce after applying OBCS;
+   - remove S/R EXF_SWAPFFIELDS_X/Y , disable S/R EXF_SET_OBCS_X/Y by adding
+     argument = number of levels to S/R EXF_SWAPFFIELDS_XZ/YZ and S/R
+     EXF_SET_OBCS_XZ/YZ ; update obcs_exf_load.F;
+   - fix EXF_SET_OBCS_XZ/YZ for multi-threaded (assuming loaded arrays are shared)
+   - verification exp. seaice_obcs: split domain in 2 tiles ; add SIZE.h_mpi
+     and eedata.mth for MPI and mutlti-threaded testing.
+ o pkg/flt:
+   - make FLT EXCH working with multi-threads (and MPI + multi-threads);
+   - use buffer for floats IO (trajectories & profiles); size set in FLT_SIZE.h;
+   - fix pickup and trajectories + profiles output with multi-threads;
+   - add parameter to select group of fields to write along trajectory and
+     profile (default unchanged);
+   - only call PORT_RAND* function when flt_noise <> 0;
+   - add multi-threaded test for verification exp. flt_example.
+ o eesupp/src:
+   - fix S/R ALL_PROC_DIE for MPI+multi-threads.
+   - USE_OMP_THREADING: check that number of threads (from eedata) matches
+     actual number (from env.var. setting).
+ o pkg/ebm:
+   - fix multi-threading in ebm_area_t.F ; clean-up EBM.h header file.
+   - add multi-threaded test for verification exp. global_ocean_ebm
+ checkpoint63b (2011/08/29)
+ o pkg/ebm:
+   - fix sign of runoff;
+   - update directly forcing fields (Qnet,EmPmR) to use standard
+     external_forcing_surf.F (remove ebm_forcing_surf.F);
+   - avoid loading forcing fields a 2nd time (1rst time from ini_forcing.F);
+   - set either tauThetaClimRelax (in data) or tauThetaZonRelax (in data.ebm)
+     and apply relaxation towards corresponding SST field (2-D map or ZonAver).
+   - update global_ocean_ebm parameters file data and update output (fwd+ad).
+ o verification/matrix_example:
+   - split domain in 8 tiles (2x4); add SIZE.h_mpi and eedata.mth for
+     MPI and mutlti-threaded testing.
+ o pkg/matrix:
+   - change name of S/R MATRIX_INIT to S/R MATRIX_INIT_VARIA ;
+   - fix for multi-tiles (add bi,bj indices to exp/impMatrixCounter);
+   - fix for multi-threaded (remove DATA statement);
+   - use standard DIFFERENT_MULTIPLE function;
+   - add MATRIX_OPTIONS.h
+ o verification/matrix_example:
+    To allow to split the domain in several tiles, change the domain size
+     from 31x31 to 32x32 by adding 1 row (on Southern side) + 1 column (on
+     Western side) of land points.
+ o (*_)write_pickup:
+   - fix few bugs in mypackage_read/write_pickup.F
+   - in MDS_WR_METAFILES calls, replace "myTime" by a local copy into
+     array of length 1 (was caught by compiler syntax-check).
+ o pkg/diagnostics (velocity potential solver):
+   - fix initialisation of main diagonal matrix (for overlap values)
+ o tools/build_options:
+   - towards single optfile for MPI and non-MPI built: merge few +mpi optfile
+     into previously non MPI one (linux_am64 pgf77,open64,pathf90,ifort11)
+   - linux_amd64_gfortran: merge +mpi_generic version into standard optfile:
+     * move IEEE flags to DEVEL section; take IEEE flags from +mpi_generic ;
+     * FAST case: for now, keep -O3 with ini_masks_etc.F in NOOPTFILES list;
+     and use "-devel" testreport option for standard testing on baudelaire.
+ o pkg/grdchk:
+   - Assume that all gradient-check position are within the same tile
+     corresponding to global indices (iGloTile,jGloTile) and that
+     positions (i,j indices or nbeg) are local to this tile;
+   - set tile local-indices and proc. number according to tile global-indices;
+   - remove grdchkwhichproc from namelist (retired param);
+   - send adjoint gradient to all procs so that all procs print it to STDOUT;
+   - switch on MPI test for global_ocean.90x40x15 AD test experiment.
+ o adding package bbl (Bottom Boundary Layer)
+   description in MITgcm/pkg/bbl/bbl_description.tex
+   example/test experiment in MITgcm_contrib/bbl
+ o adjoint verifications
+   - changed 5 experiments to multi-tiles
+     * global_ocean.90x40x15
+     * obcs_ctrl
+     * offline_exf_seaice
+     * tutorial_dic_adjoffline
+     * tutorial_tracer_adjsens
+     changed reference output for those that crossed tile boundaries
+     (changed choices of gradient check positions)
+   - with same tiling, switch on MPI test for the last 4 (add SIZE.h_mpi)
+   - temporary bug fix in grdchk_loc.F for obcs
+ o genmake2 & testreport
+   - add target "obj" (just for OBJFILES files) to Makefile;
+   - add option to specify FEXTRAFLAGS on command line.
+ o pkg/mypackage:
+   - remove bi,bj arguments from argument list of S/R MYPACKAGE_CALC_RHS
+ checkpoint63a (2011/08/02)
+ o pkg/diagnostics (velocity potential):
+   - fix velocity-potential calculation when using OBCS: balance net inflow
+     at each level (new S/R OBCS_DIAG_BALANCE).
+   - fix some of the problems with OBCS in stream-function calculation.
+ o pkg/exf/exf_readparms.F
+   - make treatment of optional namelists (EXF_NML_04, EXF_NML_SGRUNOFF,
+     EXF_NML_OBCS) more consistent, so that you need not have these lists
+     in data.exf when they are not used.
+ o optim/optim_readdata.F:
+   - add some output about obcs variables that might help debugging
+   - add a check about nvarlength
+ o pkg/ctrl: once again, fix computation of endrec in s/r ctrl_init_rec
+ o pkg/diagnostics (velocity potential):
+   - fix mask for OBCS (still problems in stream-function with OBCS);
+   - add specific parameter (default = main code CG2D params) for solver;
+   - in case of poor convergence, use solution corresponding to lowest residual.
+ o pkg/seaice/seaice_growth.F: small changes that permit vectorizable
+   adjoint code. In general statements like tmpscal=fld(i,j) are problematic
+   and should be avoided where possible.
+ o model/src (rStar):
+   - include r* effect on reference-state (PhiRef) in totPhiHyd
+     (so that it's really the potential anomaly at the cell center);
+     affect solution only if z* with full pressure in EOS.
+   - test-exp global_ocean.90x40x15: reduce viscA4 (was not stable) and
+     update output (because of z* in totPhiHyd and viscA4 changes);
+   - keep the previous diagnostics as "PHIHYDcR" (closer to potential anomaly
+     @ constant r) until interpolation at constant r is implemented.
+ o pkg/diagnostics
+   - fix RCENTER diagnostics in case cell center is not at interface middle
+ o add code for TEOS-10 (www.teos-10.org, McDougall et al. 2011). Use
+   this eos with eosType = 'TEOS10', in data (PARM01). This eos implies
+   that THETA and SALT are "conservative temperature" and "absolute
+   salinity"
+ o pkg/ctrl
+   - fix computation of endrec in s/r ctrl_init_rec
+   - ctrl_pack/unpack_*: remove unused variables and some obsolete code
+ o pkg/seaice/seaice_growth.F
+   - fix recomputation with FENTY_AREA_EXPANSION_CONTRACTION code,
+     remove then obsolete STORE directives
+   - fix STORE directives for tice and tices, so that only the
+     appropriate part of the fields are stored (and not the entire
+     field); update global_ocean.cs32x15.seaice AD output.
+   - cosmetic changes: adjust CPP flags and indentation for better
+     legibilty
+ o pkg/autodiff: add mnc-output of adBottomDragFld (code contributed by
+   Chris Wilson)
+ o pkg/gmredi:
+    Add Sub-Meso Eddies parameterisation from Baylor (for now, disabled with TAF),
+    and test it in verification exp. "front_relax.bvp" (update output.bvp.txt)
+ checkpoint63  (2011/07/11)
+ o pkg/exch2:
+  - rename+move: nTiles in W2_EXCH2_PARAMS.h --> exch2_nTiles in W2_EXCH2_TOPOLOGY.h
+  - exch2 version of Cumul-Sum routine: S/R W2_SET_MAP_CUMSUM set up the
+    (2*nTiles)x(nTiles) Cumul-Sum matrix and Master Proc collects all tiles X,Y
+    increments, calculates Cumul-Sum @ tile origin and sends results to each tile.
+ o pkg/diagnostics:
+  - deal with pairs of post-processed diags which are computed together; in
+    particular, re-order list of diags within 1 file to save 2nd computation.
+  - add S/R to compute velocity stream-function (called after velocity-potential
+    calculation) from divergence free transport -> new diagnostics "PsiVEL".
+  - add parameter to select grid-point location where PsiVEL == 0.
+ o eesupp/src:
+    new S/R to calculate cumulated sum on tiled array, corner grid-cell location
+    (specific S/R needed with exch2 topology - for now, just print an error msg)
+ o pkg/shelfice
+  - Implement friction velocity-dependent transfer coefficients following
+    Holland and Jenkins, JPO, 1999
+    Original code by M. Losch with small modifs.
+    Enable with CPP option SHI_ALLOW_GAMMAFRICT
+    and runtime flag SHELFICEuseGammaFrict
+ o verification lab_sea & global_ocean.cs32x15:
+  - use tools/xmakedepend (instead of cyrus_makedepend, in genmake_local):
+    does not miss some dependencies (but is slower) and also works with many files
+    (default makedepend limitation for AD built).
+  - use cyrus_makedepend in adjustment.128x64x1 (so that it still tested).
+ o pkg/diagnostics:
+  - add run-time parameter "useMissingValue" (def=False) to fill land-point
+     (i.e., where mask=0) with MissingValue ; used only in MNC output file.
+    This replaces CPP-option DIAGNOSTICS_MISSING_VALUE.
+  - Extend the use of "missing_value" setting from data.diagnostics for the case
+    of counter-diagnostics (where fraction-weight is zero). This applies both to
+    MNC and MDS output files.
+ o pkg/seaice/seaice_growth.F:
+   - add 'a priori' cap of latent heat flux based on actual mass considerations
+     when SEAICE_ADD_SUBLIMATION_TO_FWBUDGET is used in conjunction with the
+     non-legacy seaice_solve4temp.
+   - add diagnostic of the residual sublimation freshwater flux (the freshwater
+     flux taken from the ocean if the total actual latent heat fluxes exceed
+     the maximum)
+   - remove the CPP switch around the *_FWbySublim unit change and move diagnostic
+    fill for SIatmQnt, SIfwSubl, SIatmFW to the end of seaice_growth.F.
+   - add diagnostic of the actual sublimation freshwater flux (that is 0. ifndef
+    SEAICE_ADD_SUBLIMATION_TO_FWBUDGET) and of the latent heat flux (evap+sublim).
+   - bug fix : frWtrAtm needs a_FWbySublim ifdef SEAICE_ADD_SUBLIMATION_TO_FWBUDGET.
+   - bug fix : missing part to Martin's r_FWbySublim pathological case fix.
+ o verification 1D_ocean_ice_column:
+    made model domain truly 1x1x23 instead of 5x5x23 with only center cell (3,3,:) wet
+    update results
+ o pkg/diagnostics:
+  - Implement setting of "Post-Processed" diagnostics (corresponding to gdiag(5)='P')
+    which are not filled-up but computed from other diags ; In this case, the mate
+    diag points to the primary (filled-up) diag to used for post processing.
+  - Update Velocity-potential computation using post-processed diag framework.
+  ==> Change the ordering of fields and time-periods in MDS output file
+    when using periodic averaging: now writes one time record with the full set
+    of fields for this time period, then the next time reccord (it used to be
+    one field with the full set of time records then the next field).
+      Note: this is now similar to NetCDF (MNC) output file. <==
+ checkpoint62z (2011/06/21)
+ o adjoint monitor:
+  - Add adjoint monitor output for packages exf, seaice
+    and update relevant testreport output
+ o pkg/seaice:
+  - re-order diags inits so that they appear in order in available_diagnostics.log
+  - added diags: hsnow thermo. rates of change, area preceeding ridiging process,
+    area/heff/hsnow preceeding thermodynamic growth/melt.
+  - modified diag: SIdA; output actual effect, as the description states.
+  - modified description: SIqneti, SIqneto, SIuheff, SIvheff, SIdAb*, HSNOW.
+  - retired redundant diags: SIyneg, SIfice, SIsnwice, SIthdgrh.
+    (SIyneg->SIdHbOCN; SIfice->SIdHbATC; SIsnwice->SIdHbFLO;
+     and SIthdgrh->SIdHbOCN+SIdHbATC+SIdHbATO)
+  - modified diags (2) : switch all SIdA*, SIdH*, SIdS* from delta to rates.
+  - added diagnostics for seaice generic tracers (SItr*).
+  - added SItrUnit and SItrNameLong run time param (for SItr* diags).
+  - in diag names, replaced 'PrTh' abbrev. of 'preceeding thermo' with 'PT'.
+  I. Fenty: 18-Jun-2011:
+  Minor changes to seaice package:
+) Retired old variables (A22, SEAICE_lhsublim, areaMax, areaMin, hiceMin) and
+     added some new ones (SEAICE_area_reg, SEAICE_hice_reg, SEAICE_area_floor)
+    - Differentiated "regularization variables" from "floor variables"
+     * areaMin became SEAICE_area_reg (old A22) and SEAICE_area_floor
+     * hiceMin became SEAICE_hice_reg (old hiceMin)
+       (with _reg meaning regularization variable)
+    - SEAICE_lhSublim becomes lhSublim, the sum of SEAICE_lhEvap and SEAICE_lhFusion
+     so as to ensure energy conservation when going between phases
+   - A22 was not used anywhere
+) Changed regularization procedure for heffActual and hsnowActual to ensure
+     well-boundedness and smooth adjoint in seaice_growth.F
+) Fixed a bug where seaice_solve4temp would not recognize ice-free grid cells
+     because the old regularization always set heffActual >= 0.05 cm
+) Changed the model so that the default behavior is to put a small (10^-5) "floor"
+     on AREA when HEFF > 0.
+   - went from requiring ALLOW_PRECLUDE_INFINITESIMAL_AREA to be defined to
+     requiring that DISABLE_AREA_FLOOR *not* be defined
+  Affected verifications:
+   - 1D_ocean_ice_column (output.txt output_adm.txt)
+   - global_ocean.cs32x15 (output.seaice.txt output_adm.seaice.txt)
+ o pkg/diagnostics:
+   - move MNC code from diagnostics_out.F into new diagnostics_mnc_out.F (2 S/R).
+   - rename S/R GETDIAG to DIAGNOSTICS_GET_DIAG and change type of 1rst argument
+     (was _RL, now integer) with option = 0 to retrieve all levels.
+   - add pieces of code to compute velocity potential at each level (new diagnostics
+     PhiVEL, works only when UVELMASS & VVELMASS are also turned on);
+     for now, using same params as CG2D (target-resisual, max Nb of iter ...).
+   - fix few issues with counter diagnostics in diagnostics_setdiag.F &
+     diagstats_setdiag.F (if diagnostic counter is itself a counter diag)
+     and in diagnostics_fract_fill.F (do not need a valid pointer for the
+     diagnostics counter-mate); check that definition of counter-diagnostic
+     includes a valid counter-mate (in diagnostics_set_levels.F).
+ o model/src (rStar):
+   - add rStar scaling factor in diags_phi_hyd.F (similar to calc_grad_phi_hyd.F);
+     affect solution only if z* with full pressure in EOS;
+     update output of test-exp global_ocean.90x40x15.
+ o pkg/seaice:
+   - introduce siEps=1e-5 parameter
+   - use areaMax in AREA update (part 4), consistent with ridging step (part 2.5).
+   - re-organize SEAICE_ADD_SUBLIMATION_TO_FWBUDGET code.
+   - introduce ALLOW_SITRACER and seaice_tracer_phys.F to handle generic seaice tracer.
+     For now it covers, and was tested for, ice salinity and age (attached to HEFF),
+     as well as ice cover age and ridging index (attached to AREA).
+     For now the run time parameters (in data.seaice/SEAICE_PARM03) are
+     SItrName (e.g. 'age') and SItrMate ('HEFF', which is the default, or 'AREA').
+     Up to SItrMaxNum=3 tracers can be used simultaneously.
+ o pkg/salt_plume:
+   -introduce SPsalFRAC run time parameter that sets the fraction of the
+    salt by-product of ice growth (SPsalFRAC*(1-SIsalFRAC)*salt typically)
+    that gets vertically redistributed (fluxed down) by pkg/salt_plume.
+ o model debug options:
+   - Switch reading of debugMode from S/R INI_PARMS (parameter file "data", stored
+     in PARAMS.h) to S/R EESET_PARMS (parameter file "eedata", stored in EEPARAMS.h).
+   - Refine debug-msg printing selection (3 new levels):
+     debugMode  : controls printing of debug messages (sequence of S/R calls).
+     debugLevel : controls printing of algorithm-relevant auxiliary/debug messages
+      debLevZero =  0 ; /* level of disabled aux. msg printing */
+      debLevA =  1 ; /* level of minimum  aux. msg printing */
+      debLevB =  2 ; /* level of low aux. print (report read-file opening)*/
+      debLevC =  3 ; /* level of moderate debug prt (most pkgs debug msg) */
+      debLevD =  4 ; /* level of enhanced debug prt (add DEBUG_STATS prt) */
+      debLevE =  5 ; /* level of extensive debug printing */
+     New debugLevel default: with default debugMode value (=F),
+       = 2 (debLevB) or = 1 (debLevA) in case ALLOW_AUTODIFF is defined.;
+       and if debugMode=T, default debugLevel = 4 (debLevD).
+     Relation with previous settings:
+      debLevB (=2) corresponds to former debLevA (=1)
+      debLevD (=4) corresponds to former debLevB (=2)
+     Note:
+      a) if debugLevel=0, skip WRITE_GRID call when nIter0 > 0 (same as before);
+      b) default debugLevel=1 is convenient in AD runs (avoid many file opening msgs);
+         to recover previous default, set debugLevel=2 (e.g. AD-test hs94.1x64x5)
+   - Add new parameter (printResidualFreq, read from PARM02 namelist) to print
+     detailed CG solvers convergence; off (=0) by default, except if debugLevel=5.
+ o pkg/obcs:
+   - change OBCSfixTopo default from True to False (should not change the results);
+     keep OBCSfixTopo=T in verification-exp. seaice_obcs.
+ o pkg/thsice:
+   - fix bug in thsice_calc_thickn.F (was introduced in version 1.18) in
+nd layer seaice sublimation (unlikely to happen)
+   - use Interior mask for OBCS in thsice_advection.F (similar to what is
+     done in gad_advection & seaice_advection).
+ o adjoint:
+   bug fix spotted by Gael Forget:
+   seaice_advection and thsice_advection still had
+   legacy CPP options to avoid CS corner updates for adjoint
+ o pkg/seaice:
+   => Change some of the defaults (2011/05/29):
+      - change SEAICEuseFluxForm default (from False to True)
+      - change DIFF1 default (from 0.004 m/s to 0. m/s)
+      And print warnings if DIFF1 is not set in data.seaice and centered
+       avection scheme is used without any diffusion.
+   also:
+   - fix seaice_diffusion calls in default AdvScheme part of seaice_advdiff.F;
+   - set SEAICEdiffKh[] default in the same way as SEAICEadvSch[]
+   - stop if DIFF1<>0 with SEAICEadvScheme <> 2, if DIFF1<>0 with any
+     other non-zero SEAICEdiffKh[] diffusivity, if SEAICEadvSalt=T with
+     #undef SEAICE_VARIABLE_SALINITY, if SEAICEadvAge=T with #undef SEAICE_AGE.
+   update results of test exp.:
+      lab_sea: output.fd (switch to AdvScheme=33 with diffKh=20)
+          output.hb87, output_adm.evp (SEAICEuseFluxForm=T and diffKh=200)
+          output_adm.noseaicedyn (SEAICEuseFluxForm=T)
+      offline_exf_seaice: output.seaicetd, output_adm (SEAICEuseFluxForm=T)
+      seaice_obcs: output (SEAICEuseFluxForm=T)
+   and prescribe old default for SEAICEuseFluxForm (=F) and DIFF1 (=0.004)
+       for standard fwd & AD lab_sea tests (to keep the same output).
+ o pkg/seaice/seaice_growth.F:
+   - use Ian Fenty's capping formulas for actual ice
+   thickness thoughout EVOLUTION branch.
+   - put treatment pathological case #2) in CPP brackets
+   (ALLOW_AVOID_INFINITESIMAL_AREA, undef by default).
+   - update global_ocean.cs32x15 and 1D_ocean_ice_colum results accordingly.
+ o pkg/seaice:
+   - seaice_diffusion.F : remove the min(DX,DY) factor permanently;
+   pass the Laplacian diffusivity (in m^2/s) diffKh as a parameter;
+   also pass fac as a param, which can be 1. (to update the tendency
+   field) or the time step (to update the field itself).
+   - seaice_advdiff.F: for multidim, call seaice_diffusion with
+   e.g. SEAICEdiffKhHeff and with fac=1; for single-dim, call
+   seaice_diffusion with e.g. SEAICEdiffKhHeff and with fac=time step.
+   - SEAICE_PARAMS.h, seaice_readparms.F, seaice_check.F :
+   hooks to handle SEAICEdiffKhHeff, SEAICEdiffKhArea, etc.
+ o pkg/seaice:
+   diffusion with centered advection scheme (diffus.F & advect.F):
+   - simplify S/R DIFFUS (put deltaT & DIFF1 factor outside, move EXCH outside)
+     to just compute the laplacian of input-field.
+   - unroll k loop (harmonic,biharmonic diff) in advect.F to save 1 exch call.
+   - fix flux-form version in diffus.F to conserve tracer.
+   update output of lab_sea.fd & lab_sea.hb87 (1rst set of modif affects
+    machine truncation) and lab_sea.salt_plume (conservative flux-form modif)
+ checkpoint62y (2011/05/26)
+ o pkg/seaice:
+  - seaice_growth.F : in EVOLUTION branch, always include
+    a_QSWbyATM_cover in qnet (as it should be).
+  - verification/global_ocean.cs32x15 : update results accordingly
+    (output.seaice.txt output_adm.seaice.txt).
+ o pkg/seaice + obcs:
+  - use maskInW & maskInS in multi-dim advection and biharmonic diffusion:
+    equivalent of assuming no tracer gradient outside the OB region.
+    update output of seaice_obcs (uses DIFF1 <>0 => biharmonic diffusion)
+  - remove calls to OBCS_COPY_TRACER after EXCH calls (no longer needed
+    after changes above);
+  - obcs+seaice cleaning: apply seaice-tracer OB values to tracer field
+    only at OB location (instead of over a band of OLx width).
+ o pkg/seaice:
+  - fix wrong indices in old (non Flux-Form) diffusion default S/R diffus.F
+    (dxG(I+1, ...) changed to dxG(I, ...), no impact on Lat-Lon grid)
+ o pkg/obcs:
+   - split header file "OBCS.h" into 4 separated files:
+     OBCS_PARAMS.h, OBCS_GRID.h, OBCS_FIELDS.h & OBCS_SEAICE.h
+    Note: OBCS_PARAMS.h & OBCS_GRID.h can be included without OBCS_OPTIONS.h
+      (contain no conditional statement which depends on OBCS options).
+   - move "useOBCSYearlyFields" from "data.obcs" (hold in OBCS_PARAMS.h)
+     to parameter file "data.exf", namelist EXF_NML_OBCS (in EXF_PARAM.h).
+ o ctrl, cost, grdchk & autodiff pkgs:
+   - make options file more standard (like other {PKG}_OPTIONS.h file but
+     with AD_CONFIG.h); clean-up some of the included header files.
+ o pkg/obcs:
+   - do not mask tracer when applying OB (tracer == 0 could generate problems)
+   - apply tracer OB values to tracer field only at OB location (instead of
+     over a band of OLx width)
+   - clean-up obcs_apply_w.F & obcs_apply_eta.F (since less calls to these S/R)
+   - remove OBCS_MULTIDIM_OLD_VERSION code in gad_advection.F and remove
+     obcs_apply_tloc.F & obcs_apply_sloc.F
+ o obcs in model/src:
+   - call OBCS_APPLY_W only if NonHydrostatic.
+   - call OBCS_APPLY_ETA only if NonLinFreeSurf.
+   - reset dEtaHdt and wVel to zero outside OB interior region ;
+   - leave tracer unchanged outside OB interior region: This has no effect
+     on the solution but just to prevent unrealistic tracer value outside OB.
+   - zero out velocity outside OB interior region: This has no effect on
+     the solution but just to prevent unrealistic velocity outside OB.
+ o obcs and non-lin free-surf:
+    move call to OBCS_APPLY_R_STAR from update_r_star.F to calc_r_star.F
+    and call to OBCS_APPLY_SURF_DR from update_surf_dr.F to calc_surf_dr.F
+    + add argument "etaFld" to OBCS_APPLY_R_STAR & OBCS_APPLY_SURF_DR:
+    this fixes missing EXCH + get consistent eta OB value (+ fix restart).
+    update results of test-exp. exp4(nlfs).
+ o exp4 (nlfs) test-exp:
+    use OBC for Eta at Western & Eastern OB (to test prescribing Eta
+    with NonLin-FreeSurf); update output.nlfs.txt
+ o obcs and 2d/3d solver norm:
+    use interior masks (maskInC) to cancel out cg2d & cg3d matrix coeff at OB
+    and outside OB interior region (will allow to place OB further inside the
+    domain). Depending on the domain, can affects cg2d-Norm (previous
+    cancellation outside OB was only partial), e.g. in exp4 & obcs_ctrl,
+    and cg3d-Norm (previous Norm was computed before canceling OB terms),
+    e.g. in tutorial_plume_on_slope.
+   - update output of exp.: exp4 (x2), obcs_ctrl and tutorial_plume_on_slope.
+ o pkg rbcs:
+   - split RBCS.h into 3 files: RBCS_SIZE.h, RBCS_PARAMS.h & RBCS_FIELDS.h
+   - add capability to apply relaxation to horizontal velocity uVel & vVel.
+ o pkg/grdchk: add gradient check for control variable xx_shifwflx
+ o pkg/shelfice/shelfice_init_fixed.F
+   fix CPP-flag combinations
+ o pkg/seaice: Merge iceage code of Pierre Rampal
+   * update/change/correct ice age calculations
+   * add age updates for pathological cases
+   Probably needs more testing...
+ checkpoint62x (2011/05/13)
+ o pkg/mom_vecinv:
+    high-order vorticity scheme: use interior masks (maskInW & S)
+    to zero-out (outside OB) gradient of vorticity.
+ o verification exp.:
+    turn on "useEnergyConservingCoriolis" (better discretisation) in exp.
+    hs94.128x64x5 and seaice_obcs ; update results.
+ o pkg/obcs:
+   fix bug in OBeta for YZ sections in obcs_exf_load.F
+ o pkg/ctrl, pkg/shelfice, and optim:
+   - add new control variable xx_shifwflx (fresh water flux underneath ice
+     shelves). This is almost as tedious as obcs-ctrl, because the
+     variables needs its own mask.
+   - add a cost function term that penalizes the deviation of xx_shifwflx
+     from the first guess (zero) in analogy to other control variables
+ o pkg/shelfice:
+   - start basic adjoint
+ o pkg/ctrl:
+   - remove extra 2D field "for good measure" when initializing in
+     ctrl_set_globfld_[xy/xz/yz].F
+   - replace hard coded precision 32 (a bug) in ctrl_map_ini_gen by ctrlprec
+   - improve error messages in ctrl_set_unpack_*
+ o OBC implementation in momentum:
+    use interior masks (maskInC,W & S) in momentum S/R:
+    - multiply divergence, tension and some del^i.u or del^j.v by maskInC
+    - multiply del2u,del2v by maskInW/S (biharmonic viscosity)
+    - multiply horiz. grad of vorticity by maskInW/S (in Leith scheme)
+    - multiply gradient of wVel by maskInW/S in del2w calculation (NonHyd)
+    Motivation: fix/clean implementation of OBC with biharmonic-viscosity
+     (and also with Leith/Smagorinsky harmonic-viscosity).
+    Update output of experiment dome and exp4 (+nlfs).
+ o exp4 test-exp:
+   - turn on: nonHydrostatic, exactConserv, viscA4 (with momDissip_In_AB=F)
+     and prescribe time-varying OB (without pkg/exf) for zonal-velocity
+     at Western & Eastern Boundaries (+/- 1 per-cent); Also prescribe
+     time-varying OB at Western-side for wVel (NonHyd); update output.
+   - add secondary set-up (.nlfs) using NonLin FreeSurf (z*) + mom_vecinv
+     and biharmonic-viscosity ; also use prescribed time varying OB.
+ o pkg/obcs:
+   fix bug in OBWeta,OBWeta indices in obcs_apply_r_star.F
+ o model/src:
+   - fix startTime setting when baseTime<>0 & nIter0=0 are specified ;
+   - initialise startTime & nIter0 with unlikely values: allows to set one
+     from the other without ambiguity.
+ o seaice_obcs test-exp.:
+   add small diffK4T,S to test biharmonic diffusivity with OBCS ; update output.
+ o pkg/obcs:
+   - remove calls to OBCS_COPY_TRACER after EXCH for T,S & pTracer:
+     no longer needed with maskInC,W,S in pkg/generic_advdiff.
+ o pkg/seaice:
+   - retired SEAICE_SALINITY and SEAICE_salinity in favor of
+     SEAICE_VARIABLE_SALINITY and SIsalFRAC, respectively.
+   - fixed bug in the initialization of sea ice salinity variable HSALT
+     in seaice_init_varia.F  (removed dependence on ICE2WATR)
+ o fizhi-cs test exp.:
+    switch reference output convention for these 2 non-standard test-exp,
+     from: pgi  6.1-5 on faulks (FC.6, -of linux_ia32_pgf77+authors_fc5)
+       to: ifort 11.1 on baudelaire (FC.13, -of linux_amd64_ifort11)
+    reason: faulks might get retired soon and pkg/fizhi has still Pb with gfortran
+ o model/inc:
+   - change type of PmEpR array (from _RS to _RL) to fix restart (with "-use_r4")
+     of exp. global_ocean.90x40x15 (Suncronous time-stepping + Real-FW + NonLin-FS)
+ o pkg/seaice:
+   - fix calculation of saltFlux and saltPlumeFlux when using SEAICE_SALINITY
+ o verification/lab_sea, 1D_ocean_ice_column, seaice_obcs, global_ocean.cs32x15
+   - updated output*.txt files due to bug fixes in salt, saltPlumeFlux,
+     and initial HSALT
+ checkpoint62w (2011/04/26)
+ o pkg/mom_fluxform:
+   - fix calculation of del2u & del2v (no-slip BC) when using Non-Lin Free-Surf.
+   - use parameter "sideDragFactor" in no-slip BC side-drag part.
+   - update output of exp. global_ocean.90x40x15
+ o pkg/mom_vecinv:
+   mask del2u & del2v (no effect on results, but cleaner & closer to mom_fluxform)
+ o update seaice exp.:
+   use more consistent parameter values (remove "backward compatability only":
+    ICE2WATR, SEAICE_lhSublim, SEAICE_cpAir, SEAICE_rhoAir + set rhoConstFresh)
+   related to thermodynamics seaice. Update output (fwd+AD) of exp.:
+D_ocean_ice_column (x2), lab_sea (x8), ioffline_exf_seaice (x2) & seaice_obcs
+ o update test-exp global_ocean.90x40x15:
+   o use default CD_CODE_OPTIONS file (Adams-Bashforth on CD Mom & Coriolis).
+   o increase Overlap size from 2 to 3 (to allow to test bi-harmonic Visc.)
+   o new pickup-files from a 100.yr run with pkg/down_slope (input.dwnslp params)
+   o turn on zStar & viscA4 in standard set-up (dir input/)
+     and update output files: output.txt & output.dwnslp.txt
+ o new AD-test experiment: obcs_ctrl
+   (From Matt MITgcm_Contrib/SOSE/BoxAdj) to test OBCS as control vector.
+ o pkg/dic:
+   fix two bugs in handling water vapour pressure in carbonate chemistry
+   and air-sea fluxes. Found by Val Bennington and Galen McKinley
+   (add DIC Option = WATERVAP_BUG to recover old results)
+   update output of tutorial_global_oce_biogeo (fwd+AD) & tutorial_dic_adjoffline
+ o adding allowInteriorFreezing option to check for water below freezing point
+   at depth and bring the negative heat anomaly to the surface level
+ o pkgs _fields_load:
+   - extend GET_PERIODIC_INTERVAL to deal with non-periodic case (from pkg/rbcs)
+   - use new S/R GET_PERIODIC_INTERVAL in pkgs:
+     bulk_force, cheapaml, cfc, dic, obcs (+ ctrl/ctrl_get_gen_rec), offline and
+     rbcs to get interpolation weights and time reccord number.
+   - fix multi-threading in aim_fields_load.F
+   - apply EXCH to temp arrays [0,1] after reading in dic_fields_load.F
+ o external_fields_load:
+   new S/R GET_PERIODIC_INTERVAL to calculate which time-record (and linear
+    interpolation weights) to use in a periodic time-series ; do not divide by
+    time-step to convert to integer:
+    - this fixes case where externForcingPeriod is not multiple of time-step
+       (Thanks to Christopher L. Wolfe)
+    - this fixes case where externForcingPeriod is an odd multiple of time-step
+      (was wrong by half of time-step); update results of tutorial_global_oce_in_p.
+   store index of time-record which is currently loaded:
+    - works without any assumption on sequence of calls to EXTERNAL_FIELDS_LOAD ;
+    - needed for the adjoint but not yet used because of extensive recomputations;
+      (to be fixed soon)
+ checkpoint62v (2011/04/02)
+ o verification/1D_ocean_ice_column added to test Ian Fenty's
+   pkg/seaice_growth.F modifications for improving sea ice code differentiability
+ o update output of exp4, internal_wave, seaice_obcs, tutorial_plume_on_slope
+   (new velocity statistics after changing maskInW & maskInS definition)
+ o pkg/generic_advdiff with OBCS:
+   use maksInW & maskInS in advective flux and in biharmonic diffusion calculation:
+   equivalent to assumption of no tracer gradient outside the OB region.
+   This will affect the results if using obcs+biharmonic diffusion.
+   update output_adm.txt of experiment bottom_ctrl_5x5 (not expected since no obc)
+ o pkg/obcs:
+   change definition of maskInW & maskInS: leave OB edges inside (maskIn=1)
+   (e.g., maskInW(OB_Ie)=1 ) so that velocity normal-component at OB is still
+   in Interior region. No impact on solution but affects Velocity monitor stats.
+ o pkg/ptracers (adjoint)
+   New option AUTODIFF_PTRACERS_SPLIT_FILES for writing separate
+   tape file for each tracer
+ o model/inc/src and pkg/autodiff: add parameters that allow to turn
+   of parts of the adjoint code at run time. For now, there are only
+   useKPPinAdMode, useGMrediInAdMode, and useSEAICEinAdMode. These
+   parameters are set in data.pkg.
+   This is the lazy coward's version of doing this, but still useful for
+   debugging. In order to do it right, everything needs to be moved to
+   pkg/autodiff.
+ o pkg/autodiff: fix global_sum_tile_ad.F by resetting adsumPhi at
+   the end; this fixes the adjoint balancing code for open boundaries.
+ o pkg/ctrl:
+   - change behavior of xx_${varname}period to be analogous to exf-conventions:
+     xx_${varname}period =   0.,  means time-independent control part
+     xx_${varname}period = -12., means one-year-periodic monthly control part
+   - introduce helper routine ctrl_init_rec (part of ctrl_init.F) to
+     clean up ctrl_init a little, remove unused variables
+   - ctrl_init: fixed the handling of the start/endrec for obcs-variables
+   - move "call cal_GetMonthsRec" from s/r ctrl_get_gen to s/r ctrl_get_gen_rec
+ checkpoint62u (2011/03/15)
+ o model/src:
+   - for the adjoint, change NonLin-FreeSurf initialisation sequence: fill-in
+     h0Fac from INITIALISE_FIXED and reset hFac to h0Fac in INITIALISE_VARIA ;
+   - in initialise_varia.F (except for ALLOW_DEPTH_CONTROL) remove 2nd call to
+     INI_DEPTHS, INI_MASKS_ETC & INI_LINEAR_PHISURF.
+ o pkg/ctrl/obcs/ecco:
+   - remove obsolete, unused, and partially broken code:
+     ctrl_obcsvol/ctrl_obcsbal/ctrl_volflux and code within
+     ALLOW_CTRL_OBCS_BALANCE
+   - put a stop statement into ecco/cost_obcsvol.F, but also add
+     cost_obcsvol to ecco_ad_diff.list
+ o pkg/ecco: fix counting cost function contributions for obcs (code
+   by Matt M.) and diffkr for diagnostics
+ o pkg/ecco, pkg/ctrl, pkg/grdchk:
+   add cost penalty terms for initial uvel, vvel, eta controls
+   and I/O for prior error files
+ o pkg/mdsio:
+    move mds_check4file.F from eesupp/src to mdsio_check4file.F ; add option
+    (new argument) to check for tiled file in mdsioLocalDir : this fix the
+    restart from pickup_som , pickup_dic (& dic_co2atm) with mdsioLocalDir.
+ o pkg/ctrl:
+  - ctrl_obcsbal.F, ctrl_obcsvol.F: replace last calls of ctrl_getrec by
+    ctrl_get_gen_rec, put a stop statement into ctrl_getrec. Remove
+    unused and superfluous variables
+  - ctrl_get_gen_rec.F: catch the case of xx_genperiod=0.
+ o pkg/ecco
+  - enable adjoint of Stevens OB
+ o pkg/ctrl/ecco/grdchk:
+   - remove global declaration of tmpfldx/yz and tmpfldx/yz2.
+     Fortunately, we do not have any tests for the numerous cpp-flagged
+     option of "obcs as control parameters" so we will never know
+     if this is an improvement (but at least now things compile).
+   - remove an obsolete initialization from ecco_cost_init_barfiles.F
+   - fix some problems within never used ifdefs to make the code compile
+ o pkg/obcs:
+  - Refine Interior mask definition to work with more complex OB (e.g.
+    if OB_Ie < OB_Iw); In case default setting is not sufficient, allows to
+    read in Interior mask from file. Check if Interior mask is consistent
+    with OB list of indices.
+ o pkg/seaice
+  - beginning code for a seaice tracer package,
+    but currently only used for seaice age: SEAICE_AGE
+    SEAICE_num = 4
+    iTracer = 1: area-weighted ice age
+            = 2: volume-weighted ice age
+            = 3, 4: template for one-year vs. multi-year ice
+    data.seaice has new namelist SEAICE_PARM03 for arrays related to
+    SEAICE_num
+ checkpoint62t (2011/03/05)
+ o pkg/obcs:
+  - obcs_apply_uv.F: change to a 2 steps method, first tangential component;
+    then normal component. This ensures that the normal component is set
+    correctly even when it conficts with tangential setting from an other OB.
+    Affects results of test-experiment seaice_obcs: update the output.txt
+ o pkg/obcs:
+  - add code to monitor statistics of dynamical fields at OB.
+  - take OBCS_BALANCE code out of obcs_calc.F into new S/R OBCS_BALANCE_FLOW :
+    - fix to OBCS_BALANCE code (right hFac ; deal with simple OB intersection).
+    - change default: balance the Net inflow through all OB (instead of balancing
+      each OB separately); keep the old method if setting OBC_balanceFacX < 0.
+  - switch on useOBCSbalance in dome experiment: only correct Western OB outflow
+    to match Nortern OB inflow (OBCS_balanceFacN=0).
+ o pkg/seaice:
+  - redefined actual sea ice age to be ICEAGE/HEFF ifdef SEAICE_AGE_VOL
+ o pkg/seaice (seaice_growth v 1.113):
+  - reverting seaice_growth to v 1.111 in order to have code with exact bit
+    compatibility with MITgcm_contrib/ifenty/Fenty_seaice_thermo_code_merge
+    CPP option SEAICE_OCN_MELT_ACT_ON_AREA removed in v 1.112 is reintroduced
+    runtime flag SEAICEareaFormula is kept but is inactive
+ o model/src:
+  - add new param to scale curvilinear grid distance and area when using
+    a different sphere radius from the grid-files.
+  - test/check multi-threads EXCH applied to local variable (cg2d_x)
+ o adjoint:
+  - enable adjoint of Stevens OB
+  - add dummy_in_dynamics to enable extraction of ADJrhoinsitu
+    (a bit delicate because of potentially modified adj. common block structure;
+    current switch is ALLOW_AUTODIFF_MONITOR_DIAG, could be changed later)
+ checkpoint62s (2011/02/15)
+ o pkg/seaice (seaice_growth v 1.112):
+  - introduce SEAICEareaFormula run time parameter, which selects the recipe for
+    computing the ice cover tendency from effective thickness tendencies. Include
+    Ian Fenty's formula.
+  - remove 'undef SEAICE_OCN_MELT_ACT_ON_AREA' which may now be achieved using
+    SEAICEareaFormula.
+  - simplify notations for the various d_HEFF/d_AREA terms.
+ o pkg/gmredi:
+  - add Boundary-Value-Problem bolus transport (Ferrari etal, OM 2010) code
+    from Christopher Wolfe (UCSD); add partial cell factor in vertical derivative;
+    add a verification test-run (front_relax.bvp) to test GM_useBVP.
+ o pkg/seaice (seaice_growth v 1.111):
+  - for SEAICE_DO_OPEN_WATER_GROWTH, replace Gael's implementation with Ian's.
+  - the new SEAICE_DO_OPEN_WATER_MELT allows open-water air-sea heat fluxes to
+    also melt ice.
+ o pkg/seaice:
+  - McPhee formula for Ice-Ocean fluxes (provided by Ian Fenty).
+  - can be used by #define MCPHEE_OCEAN_ICE_HEAT_FLUX in SEAICE_OPTIONS.h
+ o pkg/cheapaml:
+  - from Nico Wienders: New version of this package.
+ o pkg/flt:
+  - add CPP options to prevent floats to re-enter the opposite side of
+    a periodic domain (default: keep periodicity)
+ o pkg/gmredi:
+  - apply exchange to GM_PsiX,GM_PsiY to get valid values near CS-corners
+    (needed for multi-dim advection).
+  - switch on GM Advective form in global_ocean.cs32x15 and update output.txt
+ o model/src:
+  - fix wrong re-setting of addMass array (ALLOW_ADDFLUID) for atmospheric run.
+ o tutorial_tracer_adjsens
+  - extend to NLFS and replace maskC by hFacC
+    (change reference output accordingly)
+ checkpoint62r (2011/01/24)
+ o testreport:
+  - add option -deloutp (-do) to remove output file after successful run
+  - add option -mfile (-mf) for MPI machile-file and for each test-exp,
+    extract exact list of procs from this file ; adjust COMMAND by
+    replacing TR_MFILE & TR_NPROC with local machile-file & Nb of MPI procs.
+ o pkg/ecco: replace old ineffective way of penalizing deviations from
+   first guess (of obcs) with code by Matt Mazloff
+ o pkg/ctrl: add code that allows the use of ALLOW_OBCS?_CONTROL without
+   exf/cal
+   - ctrl_init: fix initialisation (computation of diffrec) for obcs-ctrl
+     and handle case of obcs?period == 0
+     Not affected by these changes: There is still an inconsistency in
+     the computation of start/endrec for the obcs variables for ALLOW_CAL
+     defined (see comment by Menemenlis, 7-Mar-2003)
+   - make S/R ctrl_get_gen_rec return something meaningful even if
+     ALLOW_CAL is not defined
+   - ctrl_getobcs?: simplify code so that it does not need to use
+                    S/R exf_swapfields
+ o testreport:
+    allow to test MPI with different number of processors for each experiment:
+    create file "SIZE.h.mpi" in each build dir.
+    Note: update of "-command" argument not yet implemented.
+ o model/src, pkg/autodiff, pkg/ecco, pkg/seaice:
+   alleviate the need for additional 3D tapes when using
+   the non-inear free surface in the adjoint. This is done
+   by adding an 'update' of hfacc etc. to their current
+   value at the beginning of forward_step.F.
+ o pkg/seaice
+   seaice_lsr: move stress-divergence computations out of outer pseudo-
+   timestepping loop
+ o pkg/obcs/obcs_prescribe_read.F: move 'CALL OBCS_EXTERNAL_FIELDS_LOAD'
+   up, so that the calls of the ctrl_* subroutines are really at the end
+   of the routine.
+ o pkg/gmredi:
+   allow to specify a 2-D horizontal map and a 1-D vertical profil
+   as scaling factor for Isopycnal diffusivity (Redi) and GM diffusivity.
+ o pkg/seaice:
+   move lsr iterations from seaice_dynsolver to seaice_lsr.
+ o pkg/seaice:
+   reduce memory footprint of seaice mutldim advection tapes,
+   by using a 2D tape independent of the generic_advdiff ones,
+   and setting GAD_AREA=1 etc. rather than GAD_AREA=101 etc.
+ checkpoint62q (2010/12/29)
+ o model/src:
+   - check horizontal grid-spacing for unset or zero/negative values.
+   - change AD test hs94.1x64x5 to be truly a 2-D set-up.
+ o pkg/flt:
+   - use (recent) mdsio S/R MDS_READVEC_LOC instead of local FLT_MDSREADVECTOR
+   - precision of input and output files set according to readBinaryPrec
+     and writeBinaryPrec (previously always 64.b), pickup remains at 64 bits.
+   - initial float position from tiled file was not converted to index space
+     (looks like a bug): fixed to make it similar to initial pos. global file.
+ o global_ocean.cs32x15:
+    change SIZE.h of AD set-up to get same tiling as with MPI.
+    Update output_adm, output_adm.thsice (pass@14) & output_adm.seaice (fail@11)
+ o model/src:
+    add flag to control printing of domain fields (bathymetry, hFac ...) in
+    ini_mask_etc (call to plot_fieds_xy*).
+ o pkg/thsice:
+    if useEXF, some forcing fields are not valid in overlap: fixed by computing
+    over the interior only + apply EXCH at the end (like with SEAICE advection).
+ o pkg/mdsio:
+   - add 2 arguments to S/R MDS_PASS_R4/8toRL/S for overlap size of buffer
+     to copy to/from, so that it can be used to replace MDS_PASS_WH_R8toRL/RS.
+   - change barrier call for safe multi-threads access to 3-D shared buffer.
+   - MDS_READ/WRITEVEC_LOC use buffers from MDSIO_BUFF_3D.h (instead of local ones)
+   - replace call to MDS_PASS_WH_R4/8toRL with call to MDS_PASS_R4/8toRL and
+     remove the 4 S/R MDS_PASS_WH_R4/8toRL/S.
+ o pkg/flt:
+   - add fourth-order Runge-Kutta integration
+   - add basic exch2 support (only 1 facet supported so far!)
+ o pkg/mdsio+rw:
+   new S/R to read local (or tile independent) vector (read counterpart of
+    mds_writevec_loc, and front-end write_glvec_rl/rs).
+ o global_ocean.cs32x15: additional input_ad.seaice experiment
+     that uses pkg/seaice rather than pkg/thsice.
+     (using multidim advection for seaice)
+ o towards more F95 syntax for array specification in namelist:
+   - change "data.diagnostics" (data.ptracers was changed before checkpoint62p)
+     of all verification experiments.
+        e.g.:    line: fields(1,3)='ETAN    ','ETANSQ  ',
+       was changed to: fields(1:2,3)='ETAN    ','ETANSQ  ',
+   - finish adding "-DNML_EXTENDED_F77" to DEFINES list in pgf77 and g77 optfiles
+ o global_ocean.cs32x15: additional input.seaice experiment
+     that uses pkg/seaice rather than pkg/thsice.
+ checkpoint62p (2010/12/17)
+ o pkg/thsice: rename (ad tape index) iicekey as ticekey, and move it
+     to THSICE_SIZE.h to avoid conflict with pkg/seaice.
+ o pkg/seaice: add seaice_diffusion.f seaice_map_thsice.f to adjoint.
+     allow for use of multim. advection in seaice adjoint.
+ o pkg/seaice: add diagnostics for snow precipitation and sublimation flux
+   - first attempt to close budgets by taking into account the freshwater
+     flux implied by the sublimation of snow and ice. So far only the
+     volume budget is closed, turn on with soon-to-be-retired-again CPP-Flag
+     SEAICE_ADD_SUBLIMATION_TO_FWBUDGET
+ o eesupp/src:
+   new S/R with new option (NML_EXTENDED_F77) to change array specification
+   from F95 standard to commonly accepted extended F77 form.
+   This would allow to use F95 syntax in namelist (needed with gfortran 4.4.5)
+   and to revert back to the original syntax (with -DNML_EXTENDED_F77)
+   for less tolerant f77 compiler (e.g., pgf77, g77).
+ o globalFiles:
+   commented out in parameter file "data" since it's not safe with MPI
+   (e.g., wrong on aces); keep it if useSingleCpuIO=T (but not doing much
+   in this case); no longer commented out in restart test (tst_2+2).
+ o add adTapeDir to specify a special directory where adjoint tapes are
+   written/read (adread_adwrite.F). adTapeDir is specified in data/PARM05
+   and cannot be used together with mdsioLocalDir.
+ o nesting pkgs:
+   - packages_init_variables : put call to OBCS_INIT_VARIABLES in last position
+   - update Gianmaria's Nesting pkgs (from Contrib/nesting_sannino)
+   - add parameter files + utils dir + output from short run on beagle.
+ o pkg/seaice:
+     fix seaice_growth.F store directives; update results of exp. lab_sea.ad
+ o pkg/seaice: explicitly store tsurfloc in seaice_solve4temp.F to avoid
+   unnecessary copying in adjoint code, requires new parameter NMAX_ITER
+ checkpoint62o (2010/11/25)
+ o pkg/exf:
+   - change CPP option EXF_VERBOSE to run-time logical param exf_verbose.
+ o pkg/seaice:
+   - seaice_ocean_stress: split a loop for better vectorization of the
+     adjoint code
+   - seaice_growth.F: fix bug in conservation of freshwater connected to
+     capping of heff, put contribution into d_HEFFbyNEG
+   - replace irritating parameters SEAICE_latentWater/Ice and SEAICE_sensHeat
+     by something more sensible (parameters that are what their name implies)
+   - change some defaults, so that by default exf-parameters are used for
+     things like rhoAir, cpAir,latent/sensible heat parameters, in order
+     to reproduce the old results, many data.seaice now contain funny values
+     for cpAir and latent heat of sublimation
+ o packages_readparms.F: move exf_readparms up in line so that
+     exf-parameters are visible for other packages (e.g. seaice)
+ o debugMode & debugLevel=2:
+   - differentiate between debugMode & debugLevel=2:
+     debugMode: controls printing of debug messages (sequence of S/R calls).
+     debugLevel: controls printing of algorithm intermediate results and stats.
+   - remove "if debugLevel=2 => debugMode" but keep "debugMode =>  debugLevel=2";
+     => allows to print debug-stats without all sequence of call messages.
+   - switch control of debug print from debugLevel to debugMode in many S/R.
+ o pkg/obcs (obcs-sponge):
+     fix bug that was introduced on Oct 25 (in dynamics.F v1.151): put back the
+     call to OBCS_PRESCRIBE_EXCHANGES (need to exch gU,gV when using obcs-sponge)
+ o pkg/generic_advdiff:
+   - record overlap minimum size for each advection scheme;
+   - refine criteria on overlap minimum size;
+   - check and stop (in gad_check) if overlap size is too small.
+ o pkg/obcs:
+   - with ptracers: remove multiple calls to obcs_apply_ptracer (only done
+     once, in ptracers_implicit.F)
+   - with seaice: remove test on empty file name in obcs_apply_seaice (always
+     apply OB values when tile has OB)
+ o model/src, coriolis setting:
+   - integer parameter "selectCoriMap" (=0,1,2) replaces 3 logical
+     useConstantF, useBetaPlaneF, useSphereF ; can now read coriolis from
+     files (selectCoriMap=3) with any grid.
+   - add parameter "fPrime" for constant second Coriolis coeff (default=0).
+ o pkg/seaice/seaice_growth.F:
+     a few cosmetic changes that reduce the number of lines of code
+ o pkg/obcs: add boundary conditions following Stevens (1990)
+   - the code follows old MOM/NAOSIM code
+   - so far it is only implemented for the eastern and western boundaries
+     and NOT for pTracers
+ o pkg/rbcs:
+   - replace rbcsInIter by rbcsForcingOffset, the time in seconds at the
+     beginning of the first rbcs forcing period.
+   - add option rbcsSingleTimeFiles that makes rbcs read forcing data like the
+     offline package, i.e., one file per time, labeled by iteration number;
+     deltaTrbcs sets the timestep with which the data was generated;
+     rbcsIter0 is the forcing iteration corresponding to rbcsForcingOffset.
+   - rbcsForcingCycle=0 makes forcing non-cyclic.
+   - make arithmetic safe for negative times and odd forcing periods.
+ checkpoint62n (2010/11/09)
+ o pkg/seaice:
+     fix masking in free-drift S/R ; update results of exp. lab_sea.fd
+ o pkg/obcs:
+    New S/R to copy tracer value from the OB location to narrow band region
+     (width = same as overlap) beyond the OB: preserve OB value (needed for
+     high-order scheme) which were overwritten by EXCH call if in overlap
+     region. Applied to theta, salt, ptracer and advected seaice variables.
+    With seaice: use maskInC in similar way as in gad_advection.F,
+     in seaice_advection.F and advect.F.
+    Update output of experiment seaice_obcs and change exp4 to test OBCS with
+th order Adv.Scheme. for pasive salt and ptracer.
+ o tools/genmake2:
+   - when looking for an optfile (not specified), only search for Fortran compiler
+     (remove sym-link test + setting of CPP + makedepend check + C-compiler check)
+   - in get_fortran_c_namemangling: use "$CC $CFLAG" to compile C test programm
+     (instead of "$MAKE genmake_test.o" since an existing Makefile can be wrong)
+   - set default for CPP to "cpp -traditional -P" (was the case without specifying
+     an optfile, but otherwise default was just "cpp".
+   - comment out PLATFORM=$p_PLATFORM (no idea where p_PLATFORM comes from)
+   - when "CC" is not set in the optfile, look for possible C compiler
+     (instead of just setting CC=cc)
+   - put back version v.169 modif (from 2008/02/15), was dropped in v.173 changes:
+     => add a ".F" to ".o" rule for source files with no "#include" (such as
+        port_rand.F); otherwise, default ignores FOPTIM and just uses FFLAGS.
+   - move gfortran before g77 in list of possible Fortran compiler (consistent
+     with reference compiler switch from g77 to gfortran)
+ o pkg/seaice:
+   o remove SEAICE_OLD_AND_BAD_DISCRETIZATION-code, add a test to
+     seaice_check that stops the model, when the CPP flag is used.
+   o seaice_growth.F: make capping of ice volume conserving by returning the
+     capped ice as freshwater to EmPmR. This does not change the verification
+     experiments but will change runs where the capping is acutally active
+ o change reference platform+compiler from faulks+g77 to baudelaire+gfortran
+   (except the 2 fizhi test exp.); update output of exp.: bottom_ctrl_5x5,
+      global_ocean.cs32x15 (icedyn, thsice, AD thsice), global_ocean_ebm (AD),
+      lab_sea (fd, hb87, salt_plume), MLAdjust (3/5) and vermix (dd)
+ o tools/genmake2:
+   - merge genmake_warnings & genmake_errors into 1 log file: "genmake.log")
+   - change DUMPSTATE default to false (can use "-ds" option to switch it to T)
+   - clean previous genmake log files before anything else.
+   - change Makefile to remove testreport log files (*.tr_log) and genmake log
+     files only with "CLEAN" target (instead of "Clean");
+ o pkg/generic_advdiff:
+   Change OBCS in multiDim advection (gad_advection.F):
+    Use maskInC to prevent intermediate update of tracer-field in OB regions,
+    thus keeping current-time-step OB values; and remove the call to OBCS_APPLY
+    which were applying future time-step OB values.
+   This way, all explicit calculations use current-time-step OB values
+    (simpler and more consistent).
+   Affects results when set-up uses time-varying OBC and multi-dim advection;
+    update output of experiment seaice_obcs.
+ o pkg/seaice:
+   move OPTIONS (formerly locally defined) to SEAICE_OPTIONS.h:
+    this includes SEAICE_GROWTH_LEGACY (+ SEAICE_DO_OPEN_WATER_GROWTH &
+      SEAICE_OCN_MELT_ACT_ON_AREA ) and SEAICE_SOLVE4TEMP_LEGACY.
+   Default (pkg/seaice/SEAICE_OPTIONS.h) is to define SEAICE_SOLVE4TEMP_LEGACY
+    but leave SEAICE_GROWTH_LEGACY undef ; For now, keep verification exp
+    unchanged (SEAICE_GROWTH_LEGACY defined in */code*/SEAICE_OPTIONS.h)
+ o pkg aim (2010/10/26):
+   - Introduce ALLOW_INSOLATION, moving toward a more general incoming solar radiation
+     formulation with obliquity, eccentricity, ... as run-time parameters,
+   - Introduce diagnostics for top-of-the-atmaophere incoming solar radiation and
+     upward shortwave radition at the surface (all-sky and clear-sky).
+ o pkg/obcs:
+   - writing sections with globalFiles=T does not work: switch to tiled-files
+     when writing sections for OBCS (change pkg/rw/write_rec.F accordingly).
+   - fix index bug (OB_Ie -> OB_Iw_) in obcs_apply_uvice.F
+   - apply OBCS_SEAICE_COMPUTE_UVICE to both uice and vice at all obcs
+ checkpoint62m (2010/10/21)
+ o pkg/seaice: vectorize seaice_solve4temp.F
+   - move iterations loops outside of i/j-loops
+   - requires 2D arrays for TB and effConduct
+   - add 2D iceOrNot to replace HICE_ACTUAL.GT.0, as HICE_ACTUAL is
+     modified in this routine
+   - a little bit of clean up, adjusting indentation, etc.
+   - replaced a few TEN**a by exp(a*log(10.)) in new code for better
+     performance and '**TWO' by '**2' (because TWO is a float),
+     replaced ONE, ZERO
+ o eesupp/src:
+    fix flow dir for exch1_z_RX_cube, exch1_uv_RX_cube & exch1_bg_RX_cube
+ o pkg/seaice/seaice_growth.F
+   Revision 1.89 of seaice_growth.F completes the overall october 2010 revision and
+   merging process. The merged routine has two branches, and one activates the 'evolution'
+   branch by setting SEAICE_GROWTH_LEGACY to undef (at the top of the routine for now).
+   In summary, here is what the '10/10 revision' did consist of
+     part 1: seaice_growth.F revisions 1.71 to 1.75
+       - Preliminary seaice_growth.F clean-up, keeping test results strictly unchanged.
+         The emphasis here was on improving readability (e.g. by trying to use meaningful
+         variable names) and modularity (e.g. by adding arrays to store heff etc. updates).
+     part 1.5:
+       - revising the lab_sea experiment to make it a more useful (i.e. stable
+         and representative of an actual model run). This was done by generating a
+         (winter) pickup to start from, switching back the main experiment dynamic
+         solver from evp to lsr, having one of the experiments use the free drift solution.
+     part 2: seaice_growth.F revisions 1.76 to 1.85
+       - Sorting out hard-coded constants that prevented heat and fresh water conservation.
+       - Sorting out the various fields units and sign (set early on and reset at the end)
+         to avoid numerous scalings/re-scalings. By v1.85 the basic unit for ice, heat and
+         fresh water stock is 'effective ice meters', and >0 implies more ice/snow.
+       - Using tendency terms arrays (d_HEFF* etc.) to alleviate remaining code locks,
+         and simplifying logical expressions to further improve readibility.
+     part 3: seaice_growth.F revisions 1.86 to 1.89
+       - Re-organize the blocks of code more logically.
+       - Merging the '_if.F' pieces that add something new.
+ o pkg/thsice:
+   - vectorize thsice_solve4temp and thsice_get_exf.
+     Problem: thsice_solve4temp has an unvectorizable statement that
+     might also be problematic for TAF
+   - thsice_get_exf: add the ALLOW_BULK_LARGEYEAGER04 CPP-flag. This
+     does not change the verifcation experiment, but will change all
+     experiments that have this flag undefined (not tested in verification);
+     a little reorganization to save a few 2D fields and recomputations
+   - 1st step of revisiting thsice adjoint (major recomp. sorted out)
+   - 2nd step:  fix some store dirs
+     o seems to work somewhat, i.e. using ifort but not g77
+     o likely cause are incomplete init. or recomputation
+     o start verification/global_ocean.cs32x15/input_ad.thsice
+ o pkg/obcs: add support for exch2
+   - the position of the boundary and prescribed values are specified using
+     a global domain with exch2 facets stacked
+     - in x for N,S boundaries (like W2_mapIO=-1)
+     - in y for E,W boundaries (so E,W boundaries do not overlap)
+ o pkg/mdsio: add support for writing global sections with exch2
+     file layout is as for obcs described above:
+     - for x-z sections, facets are stacked in x (like W2_mapIO=-1)
+     - for y-z sections, facets are stacked in y
+ o pkg/thsice:
+    - change a few routines for better vectorization: thsice_albedo.F,
+      thsice_step_temp.F, and in thsice_calc_thickn.F. Results are
+      not affected, but in particular the latter routine has changed
+      dramatically (not necessarily easier to read now).
+    - re-arrange calculation in THSICE_SOLVE4TEMP: move outside of i,j loops
+    iteration loop and call to S/R THSICE_GET_BULKF & THSICE_GET_EXF.
+ o verification/lab_sea:
+   - overhaul of the forward model experiments. The main motivation
+     for this revision is that lab_sea has proven quite fragile (when
+     changing the sea-ice code, and switching platforms) to a point
+     when failures were very hard to attribute to specific code problems.
+   - the suspected reason for this fragility is noise amplification by evp so,
+     to start with, we decided to replace evp with lsr in the main experiment.
+   - the input.lsr experiment thus became obsolete and was removed.
+   - it was replaced with the input.fd experiment that uses an
+     analytical "free drift" solution as the ice velocity field.
+   - Taken together, input (lsr), input.fd (free drift) and input.hb87 (evp)
+     will hopefully allow us to discriminate problems due to dynamic solvers
+     from problems due to the thermodynamic code. input.salt_plume (lsr) allows
+     us to test additional options, along with the salt plume package.
+   - Finally a pickup was generated (at the end of a one year run) to
+     make the tests more representative of an actual model run. Previously
+     the tests starting point was a 1m thickness of ice everywhere.
+ o pkg/seaice:
+   - introducing S\R seaice_freedrift.F that compute the
+     analytical solution to an approximate ice momentum
+     equation (i.e. the simple stress/coriolis balance).
+   - define SEAICE_ALLOW_FREEDRIFT to trigger the computation
+     of the free drift velocity field, and enable its use.
+     To actually use the free drift solution as the model ice
+     velocity field set SEAICEuseFREEDRIFT to .TRUE. in data.seaice.
+ o move "useOASIS" from PARAMS.h to EEPARAMS.h and read it from "eedata"
+ checkpoint62l (2010/10/04)
+ o pkg/seaice:
+   -fix the USE_ORIGINAL_SBI version (for variable freezing point);
+   -use "celsius2K" in SEAICE_VARIABLE_FREEZING_POINT and in new
+    version (with USE_ORIGINAL_SBI undef);
+ o add hooks for new packages OASIS, the package will follow
+   (hooks exclude the seaice pkg for now)
+ o pkg/autodiff: ALLOW_AUTODIFF_WHTAPEIO
+   Option to use mdsio_read_whalos.F/mdsio_write_whalos.F,
+   rather than mdsio_readvector.F/mdsio_writevector.F, within
+   adread_adwrite.F to read/write adjoint-related tapes to disk.
+ o eesupp and pkg/mdsio: ALLOW_WHIO
+   Option to write/read 2D fields to files including tiles halos.
+   The main purpose is for adjoint related "tape I/O".
+   The secondary purpose is for debugging phases.
+   A word on those rather specifically intended purposes.
+   The code was meant to be stripped down to the bare minimum.
+   Typically, there is a unique and basic mapping to the global
+   buffer (tile by tile, then proc by proc, then level by level), and
+   byteswaps and meta-files are omitted. Indeed the (*_WH*) code is not
+   meant to generate user friendly outputs of various shapes and forms.
+   Rather it is intended, for the knowledgeabale developers,
+   to be largely independent of the many mdsio options, to allow
+   outputs of tiles+halos in debugging phases and in adjoint runs,
+   and to allow some flexibility in tuning (adoint) I/O depending on each
+   file system behavior. With regard to tuning, most of the potential knobs
+   (to leave files open, to allocate the I/O indep. of usesinglecpuio,
+   to specify directories, to specify the typical size of I/O calls, etc.)
+   are not yet included, and will be added if they prove useful.
+ o pkg/seaice:
+    fix uninitialised arrays in USE_ORIGINAL_SBI version of seaice_solve4temp.F
+ o pkg/seaice:
+    new S/R seaice_solve4temp.F: this is the merged version of Ian Fenty
+    code (seaice_budget_ice_if.F) which enable to recover old standard
+    code (seaice_budget_ice.F) when option USE_ORIGINAL_SBI is defined.
+    temporary: add "#define USE_ORIGINAL_SBI" at the top of seaice_solve4temp.F.
+ o model/src (rStar):
+    use simple average (not area weighted) of rStarFac at U,V point when using
+    vectorInvariant and selectKEscheme=1,3 (consistent with mom. vertical advection)
+    update output of exp. fizhi-cs-32x32x40 and fizhi-cs-aqualev20.
+ checkpoint62k (2010/09/17)
+ o adjoint
+    * changed verification/global_ocean.cs32x15 ; adjoint now tests
+      Adams-Bashforth 3 + NLFS + RSTAR
+    * some more modifs required for ECCO-GODAE v4
+ o pkg/seaice
+    add SEAICE_AGE_VOL option to use volume instead of area for
+    integrating SEAICE_AGE
+ o model/src:
+    first check-in of sigma & hybrid-sigma coordinate code ; also includes
+    non-linear free-surface parts ; but pressure-gradient not yet coded.
+ o pkg/ptracers:
+    option for ptracer to convert Salt Relax into additional EmP.
+     tested in exp. global_ocean.90x40x15.dwnslp (update output)
+ checkpoint62j (2010/08/25)
+ o pkg/ggl90:
+    other minor changes: remove 3-D temp array gTKE (+ add argument myIter)
+ o pkg/dic: car_flux.F, phos_flux.F
+   - reduce number of exp-calls in order to improve performance
+   - clean up a little (replace fields by their macros, etc., fix
+     typo in CPP-flag)
+ o pkg/ggl90: minor changes
+   - GGL90diffKrS was removed --> always use GGL90diffKr
+   - GGL90viscAr was removed --> replaced with GGL90viscArU, GGL90viscArV
+   - hack of mxlMaxFlag=2 --> ensure mixing between first and second level
+     (commented out for now)
+   - change in max/min operations to ensure that smoothing is ok
+   - smoothing of GGL90viscAr was moved to ggl90_calc.F (as done for GGL90diffKr)
+   - always use diffKrNrT as background profile (i.e. never use diffKr field)
+ o pkg/cfc: bug fix, AREA(i,j,1,bi,bj) -> AREA(i,j,bi,bj)
+ o pkg/dic:
+   - model/src/impldiff.F: if TARGET_NEC_SX, extend loop ranges for better
+     vectorization
+   - small bug fix in insol for the unlikely case of a cartesian grid
+   - towards vectorizing the dic package: bio_export.F, car_flux.F, phos_flux.F
+     + now vectorize, which also removes adjoint recomputations;
+     + replace integer maksp1 by _RL maskp1
+     + replace a**x by exp(x*log(a)) in phos_flux.F for speed
+ checkpoint62i (2010/07/21)
+ o pkg/flt:
+   - with OBCS: stop floats which enter the OB region
+ o model/src:
+   - use tempVertAdvScheme & saltVertAdvScheme (instead of horizontal ones)
+     for implicit vertical advection.
+ o pkg/seaice:
+  - account for melting in seaice age evolution.
+  - remove double counting of seaice ridging effect on seaice age.
+ checkpoint62h (2010/06/18)
+ o pkg/exch2:
+  - remove exch2_*xy_rx files: call was replaced with exch2_*3d_rx(myNz=1).
+ o tools/genmake2
+   - remove "-pdefault" option: redundant with the use of "packages.conf";
+   - remove file pkg/pkg_default : set the default as a pkg group
+     ("default_pkg_list") defined in pkg/pkg_groups;
+   - fix for case pkg/pkg_depend is missing (was hanging before);
+   - add option "-pgroups" to specify a different pkg_groups than the default.
+ o verification/adjustment.cs-32x32x1:
+    add a "minimal" set-up test (code_min & input_min) which only compiles
+    eesupp/src and the 2 pkgs (exch2 & debug) which don't need model/src & inc.
+ o tools/genmake2
+   - extend pkg_depend rules to model & eesupp (e.g., if model depend on [pkg]))
+   - fix details of checking for mnc & profile pkg when NetCDF is unavailable.
+ o pkg/exf: merge exf_bulk_largeyeager04 into exf_bulkformulae because these
+   files are nearly the same anyway.
+   Step 1: make exf_bulkformulae look like exf_bulk_largeyeager04:
+    - redefinition of tau(i,i) (by a factor of ustar)
+    - 1./exf(Const/T) -> exf(-Const/T) (big change in the results)
+    - replace rhonil by rhoConstFresh in computation of evap (bug fix)
+    - replace u/vstress=tau*rd*ws*cw by tau*rd*u/vwind (changes results)
+    - replace
+      rd(i,j)= rdn(i,j)/(exf_one - rdn(i,j)/karman*psimh )
+      shn    = sh(i,j,bi,bj)*rd(i,j)/rdn(i,j)
+      by
+      shn    = sh(i,j,bi,bj)/(exf_one - rdn(i,j)/karman*psimh )
+      (changes results)
+    -> exf_bulkformulae v1.22,
+       update verification experiments lab_sea, offline_exf_seaice, seaice_obcs
+       (lab_sea: output.hb87.txt 1.11, output.lsr.txt 1.25, output.salt_plume.txt 1.13,
+                 output.txt 1.63
+        offline_exf_seaice: output.seaicetd.txt 1.7
+        seaice_obcs: output.txt 1.10)
+   Step 2: do the actual merge and remove exf_bulk_largeyeager04.F
+    -> exf_bulkformulae v1.23,
+       unfortunately requires updating lab_sea.salt_plume (6 matching digits),
+       and global_ocean.cs32x15.icedyn (only 11 matching digits)
+   Also update output_adm of exp. lab_sea (all 4) and offline_exf_seaice.
+ o adjoint of exch-1:
+  - pass high-level EXCH S/R through TAF (eesupp/src/exch_ad_diff.list)
+    (note: was already like this when using EXCH-2) and remove flow dir
+    and hand-written AD version of high-level EXCH S/R (pkg/autodiff);
+  - provide flow-dir for low-level exch1 S/R (eesupp/src/exch1_ad.flow);
+  - update pkg/exch2 diff list.
+ checkpoint62g (2010/05/19)
+ o eesupp/src (exch-1):
+  - split exch_rx.F into Forward S/R (exch1_rx.F) and Adjoint S/R (exch1_rx_ad.F)
+    and remove argument "simulationMode"; same thing for all exch_*rx_cube.F
+    (renamed to exch1_*rx_cube.F).
+  - change accordingly exch_*_rx.template and AD version in pkg/autodiff
+    to call new exch1 S/R ; update Makefile and .cvsignore.
+  - replace call to exch2_xy_rx S/R with exch2_*3d_rx(myNz=1) (will remove
+    exch2_xy_rx later)
+   Note: after updating your code, need to run "make clean" in eesupp/src
+ o test experiment bottom_ctrl_5x5:
+    new output_adm.txt with fewer grdchk & less monitor output.
+ o model/src:
+   remove the call to ini_cori in initialise_varia.F (just keep the usual one
+    in initialise_fixed.F). More consistent with coriolis & horizontal grid
+    beeing treated in the same way (ini_grid is not called a 2nd time).
+ o pkg/exf:
+   - rewrite exf_bulk_largeyeager04.F for better vectorization, changes
+   global_ocean.cs32x15/input.icedyn (11 digits of agreement), updated
+   - fix adjoint (used worked for ALLOW_ATM_WIND defined, works for this now)
+   - cosmetic changes to exf_bulkformulae.F to make it look more like
+     exf_bulk_largeyeager04.F
+ o eesupp/src (exch-1):
+   - Fix AD EXCH code for 2-D domain special cases (Nx=1 or Ny=1).
+   - Separate buffer filling and MPI sending: allow EXCH-1 to work for local
+     array (non-shared) when using MPI+MTH. Also reduces number of BARRIER
+     (even without using MPI).
+   - Message mode: move RecvAck setting (indicator of buffer being ready)
+     from send_put to recv_get S/R (was useless before, but not sure if
+     it's much more useful now);
+   - Switch the order of sync: MPI-proc 1rst and then threads;
+   - take out spin-waiting code (#undef EXCH_USE_SPINNING), use BARRIER instead.
+   - fix AD code for communication mode ='get' (but not used).
+ o model/src:
+   initialise dPhiHydX,dPhiHydY inside calc_grad_phi_hyd.F (so that TAF does
+   not drop it in S/R mddynamics, producing NaN in hs94.1x64x5 AD-test exp).
+ o utils/matlab/rdmnc.m: adapt to be able to use the generic matlab netcdf API
+ o pkg/ctrl: require a specific set of control variables and exf-flags for
+   adjoint of seaice (stop in ctrl_check.F if conditions are not satisfied)
+ o model/src:
+  a) 1rst version of a new driver S/R to turn-off output freq and flags after the
+rst forward sweep, to avoid over-writing output files during recomputations
+    recomputations (& grdchk); called from cost_final.F (& ctrl_init_ctrlvar.F ?)
+  b) 2nd version:
+   - add specific pkg S/R for seaice & ptracers (called from S/R TURNOFF_MODEL_IO);
+   - switch-off more output flags (exf_monFreq, chkPtFreq, dumpInitAndLast,
+      writePickupAtEnd) + seaice & ptracers output;
+   - do not switch off MNC flags (otherwise, won't get admonitor netcdf file)
+ o model/src:
+   - new S/R rotate_uv2en_rl (..._rs) that rotates vector fields.
+ o pkg/exch2:
+   - remove "simulationMode" from arg. list of S/R EXCH2_RX1,2_CUBE ;
+   - add argument "signOption" to EXCH2_RX1_CUBE (will be needed for SM exch).
+ o pkg/autodiff & exch2:
+   process exch_uv_agrid_3d_rx.f & exch2_uv_agrid_3d_rx.f through TAF
+   (for now, only if ALLOW_EXCH2 is defined).
+ o pkg/autodiff:
+   - include PACKAGES_CONFIG.h in exch*ad.flow & exch*ad.F
+     (not supposed to be in CPP_OPTIONS.h) to get ALLOW_EXCH2 defined correctly.
+    + clean-up comments (_RS is not always real*4)
+   - fix bug in ADEXCH_UV_3D_RX (without EXCH2, was calling the forward exch S/R)
+   - add a stop in ADEXCH_UV_AGRID_3D_RX if trying to use it with EXCH2:
+     was calling a forward exch2, which is wrong ; used in SEAICE & EXF pkgs.
+ o testreport (AD-tests):
+   no longer link files from dir "../input" (1rst link files from
+   "../input_ad.[xx]" if secondary test "xx" and then from "../input_ad")
+ checkpoint62f (2010/04/29)
+ o model/src/the_main_loop.F:
+   adjust store directives for seaice evp and multicategory according to
+   pkg/ecco/the_main_loop.F
+ o adjoint:
+   global_sum_ad was incomplete (noted many times by many people ;)
+   nice description by Jean U. as follows:
+   * allreduce(var) in global_sum.F can be interpreted as
+     reduce(sum) followed by broadcast of sum.
+   * The adjoint of that is
+     sum(adjoint) followed by broadcast(summed adjoint value)
+     or in other words, allreduce(sum, adjoint vars)
+   We were missing the sum(adjoint)!
+   Benign, except(!) for "global" scalars appearing in tile loops (bi,bj)
+   (noted by J.M. Campin, e.g., in cost_ssh_mean, variable offset).
+   The fix should produce 16-digit accuracy between
+   single-CPU multi-tile (e.g. nSx=2, nPx=1) and
+   multi-CPU single-tile (e.g. nSx=1, nPx-2)
+   We'll probably change this yet again shortly
+ o eesupp/src:
+   - fix global_sum_r4 (wrong from previous modif in Jun 2009; ever used ?)
+ o pkg/icefront
+   - ALLOW_SUBGLACIAL_RUNOFF option adds capability for time-evolving
+     specification of addmass array based on a 2D field, which is added
+     at bottommost wet level at each horizontal location.
+ o model/src:
+  horizontal grid initialisation (other than curvilinear): add code for Exch2 IO
+  layout; (not always compatible with delX,delY setting; commented out for now).
+ o pkg/exch2:
+  change tile to processor setting (case nSy*nPy > 1): allows default model mapping
+  (myX and myYGlobalLow) to be used for simple (1 facet, no blank tile) config.
+ checkpoint62e (2010/04/15)
+ o pkg/obcs:
+   - fix wrong index in OBCS_SPONGE_V for Eastern-OB (reported by David Hebert).
+ o pkg/dic:
+   -fix bug in fe_chem.F for multi-tile (nSx*nSy > 1) set-up;
+     (note: not presently tested in any forward verification exp.)
+    update tutorial_global_oce_biogeo AD output file.
+ o pkg/exf:
+   - account for the variation of albedo as a function of zenith angle
+     by defining ALLOW_ZENITHANGLE in EXF_OPTIONS.h
+ o build_options:
+  - rename "linux_ia64_ifort+mpi_ice_nas" to "linux_amd64_ifort+mpi_ice_nas"
+ o pkg/dic:
+   change DIC atmos-CO2 box (method 3, dic_int1=3) initialisation & restart:
+   - use binary pickup file for restart;
+   - initialise atmos-CO2 box from dic_pCO2 parameter;
+   - fix multi-threaded.
+ o pkg/rbcs:
+  - clean-up RBCS code: add RBCS_OPTIONS.h file ; fix multi-threaded ;
+    change (+ fix IO calls) type of array RBC_mask from _RL to _RS.
+  - add RBCS to exp4 passive tracer 01 (rbcs was previously untested)
+    and update output.txt
+ o pkg/kpp:
+  - add diagnostics for KPP non-local flux of Temp, Salinity and pTracers;
+  - change diagnostic of KPP non-local term: output average of KPPghat*KPPdiffKzS
+    (= ratio of KPP non-local (salt) flux relative to surface-flux) when
+    using pkg/timeave & pkg/diagnostics (diag 'KPPghatK' replaces 'KPPghat ');
+  - change pkg/offline to read-in average KPPghat*KPPdiffKzS from file
+    KPP_ghatKFile (instead of the average of KPPghat from file KPP_ghatFile).
+ o pkg/offline:
+   fix bug in S/R OFFLINE_FIELDS_LOAD regarding surfaceForcing conversion factor
+   (bug was added in version 1.10 on 2007-08-23).
+ o pkg/offline:
+   - no need to specify periodicExternalForcing, etc ... to use offline pack
+   - offline input files no longer just single prec --> parameter offlineLoadPrec
+ o verification/lab_sea:
+   change AD test to multi-tile setup and update all 4 AD output.
+   NOTE: while cost function values remain very similar,
+   gradients are very different, although gradient checks are self-consistent
+   Should try to get to the bottom of this (cost function summation order?)
+ o pkg/dic:
+   in carbon_chem.F, replace log10 (AUTODIFF) with explicit form to avoid
+   a weakness of TAF that drops part of double precision in log10 derivative.
+   <= changes removed since problem has been fixed in current TAF version 1.9.71
+   update AD output of exp. tutorial_dic_adjoffline & tutorial_global_oce_biogeo.
+ o pkg/ecco:
+   add missing "_d 0" in cost_readers.F, cost_readtopex.F & cost_readtopexmean.F
+   update all 4 lab_sea AD output.
+ checkpoint62d (2010/03/22)
+ o build_options:
+   remove '-r8' (and '-i4') from linux_*pgf and linux_*ifort optfiles.
+ o remove unbalanced quote (single or double) in commented line of source code
+   (may cause some warning with some preprocessor/makedepend versions).
+ o pkg/seaice:
+   fix seaice_model.F for adjoint (gael) and update AD results of experiments
+    lab_sea (std + evp + noseaicedyn) and offline_exf_seaice.
+ o testreport:
+   add option '-runonly' (short: '-ro') to just do the run part (without make).
+ o eesupp: remove JAM communication code (obsolete).
+ o add option to genmake2 & testreport to switch "_RS" type to "real*4"
+   (if allowed in CPP_EEOPTIONS.h); update default CPP_EEOPTIONS.h and return
+   to default CPP_EEOPTIONS.h for exp. inverted_barometer & solid-body.cs-32x32x1
+   (update also the output).
+ checkpoint62c (2010/03/02)
+ o tools/build_options :
+    move (some) old optfiles from build_options/ to build_options/unsupported/
+ o model/src and pkg/exf
+    surface relaxation -- separating data and data.exf options
+    The point is to ensure that we specify the surface relaxation
+    either in data or in data.exf (but not half and half) and to
+    avoid an accidental relaxation to 0 (which happened if a time
+    scale was specified but the file name was left empty)
+ o model/src model/inc and pkg/mom_common
+    ALLOW_3D_VISCAH/ALLOW_3D_VISCA4 => 3D specification of Viscosity
+    => addition to the viscosity field as computed by others schemes
+ o tools/build_options:
+   - rename "_generic_mpi" -> "+mpi_generic" (like other "+mpi" optfile)
+     but keep the former optfile for few weeks for smooth transition
+ o pkg/ecco
+   - allow user defined cost function contributions
+      CPP: ALLOW_USERCOST_CONTRIBUTION
+      USAGE: compute contributions in cost_usercost_all.F
+   - note: this is identical to what ALLOW_GENCOST_CONTRIBUTION once was.
+       the two options are complementary.
+ o pkg/smooth
+   - migration from contrib to the main repository
+ checkpoint62b (2010/01/26)
+ o pkg/monitor:
+   - change back mon_printstats_rl.F & mon_stats_rl.F and add a stop
+     (in case someone forgot to update customized pieces of code)
+ o nonHydrostatic:
+   - add Non-hydrostatic free-surface form (selectNHfreeSurf=1)(not fully tested);
+   - add a simple 2-D experiment (short_surf_wave) to test it.
+ o pkg/icefront:
+    adding the shell of, and the hooks to, a new package that
+    will model melting and freezing of vertical glacier ice fronts
+ o momentum:
+   add diagnostics of momentum tendency from Hydrostatic pressure gradient
+    (without surf.pressure term: would need a 2nd filling since implicit term).
+ o add 3 "_d 0"s so that fizhi compiles with xlf on iblade, and replace
+   two " &end" by " &" (in fizhi-cs-*) because S/R NML_SET_TERMINATOR
+   cannot deal with the former
+ o cleaning:
+   - remove all (except OpenAD) old TLM output from results_ad dirs.
+   - remove unused S/R (MDSWRITEMETA, DIAGNOSTICS_ADD2LIST, old DFILE IO S/R)
+   - comment out maskH definition (replaced by maskInC)
+ o pkg/monitor:
+   - change mon_printstats_rl.F & mon_stats_rl.F (were similar to mon_writestats_rl
+     & mon_calc_stats_rl) to be the RL equivalent of mon_printstats_rs & mon_stats_rs.
+ checkpoint62a (2010/01/15)
+ o model/src:
+   - bottom pressure diagnostic: correct for r* (when nonlinFreeSurf >= 4)
+ o pkg/diagnostics:
+   - add optional level number diagnostics (i.e., level number to be define
+     explictly with S/R DIAGNOSTICS_SETKLEV) with parser-code(10)="X".
+   - strictly check for valid parser-code(10) ;
+   - check if adding diag to the list from the right place.
+ o pkg/longstep:
+   - change parameters and fix tracer conservation with rstar/nonlinear free surface
+ o diagnostics:
+  - in all pkgs, replace remaining calls to old S/R DIAGNOSTICS_ADD2LIST with newer
+    S/R DIAGNOSTICS_ADDTOLIST ; fix seaice VICE diagnostics.
+ o pkg/diagnostics:
+  - Add option for writing vertical integral (sum of selected levels) of an output
+     field instead of writing output field levels. Activate this option on a per
+     output-file basis, by setting the 2nd character of fileflag to 'I'.
+  - Add field-specific information relative to level integral in 3rd postion
+     of parser diagnostics code (gdiag): " "=cumulate levels, "R"=integrate
+     vertically (x level-thickness x hFac), "r"=same but without hFac.
+ o do_the_model_io:
+   - pass end-of-model-run flag as argument, from forward_step to diagnostics_write:
+     in case useSIGREG, will write (averaged) diagnostics (if dumpAtLast) before
+     writing pickups and stopping.
+ o pkg/diagnostics (for now, only with mdsio):
+   - write time information to meta file (and modify accordingly rdmds.m) :
+     time-averaged diagnostics output: write starting and ending time of the
+     time-averaging interval ; snap-shot diagnostics output remains unchanged;
+ o pkg/timeave:
+   - S/R TIMEAVE_NORMALIZ: change size of cumulated-time array (was previously
+     always Nr), now assumed to be equal to number of levels of averaged field;
+     only used for DIC_COST monthly mean arrays: this fixes dic_aver_final.F
+ o pkg/sbo:
+   - fix ocean bottom pressure global-average & 2-D time-ave output (was
+     neither initialised nor filled).
+   - add starting iteration in suffix of global-average output file
+     (to avoid over-writing the file after a restart)
+   - use standard MDSIO pkg S/R instead of SBO_WRITEVECTOR (fix byte-swap Pb).
+ o time-average:
+   - use simple cumulative-time array (no k index) in all pkgs: {PKG}_timeAve(bi,bj)
+     (pkgs: aim_v23, bulk_force, dic, gmredi, kpp, land, ocn_compon_interf,
+      ggl90, my82, opps, pp81, ptracers, sbo, seaice, shelfice, thsice)
+     this fix DIC_COST cumulative-time array (previously: bi,bj,k)
+   - fix 1rst call (nIter0) snap-shot output and accumulation (pkg/shelfice)
+   - fix missing accumulation for pkg/opps.
+   - cumulate fields only if doing time-ave output ({PKG}_taveFreq > 0)
+      (pkgs: ptracers, kpp, ocn_compon_interf, ggl90, my82, pp81);
+   - fix initialisation of time-ave vars and do only full time-step increment
+     (i.e.: no first & last "half time-step") (pkgs: ggl90, my82, opps, pp81);
+ o pkg/layers:
+   - use standard RW pkg S/R to write the output
+     and remove local write_fld version (which had a problem).
+   - use simple cumulative-time array (no level index) to fix time-ave S/R calls.
+   - fix LAYERS_CALC argument list.
+ o pkg/timeave:
+   - store cumulative-time in a simple tiled array (drop the level index)
+   - add new S/R (TIMEAVE_NORMALIZE) which uses simple cumulative-time array.
+ o pkg/ocn,aim_compon_interf
+   - changes for multi-threaded coupled run. (tested with ifort-11 on danton)
+ checkpoint62  (2009/12/23)
+ o switch on useOBCSbalance in tutorial_plume_on_slope exp. and update output.
+     (was not previously tested in any other exp.)
+ o pkg/monitor:
+   - clean-up _RL/_RS version: add specific S/R for statistics with mask & volume:
+     mon_writestats_rl/s,F mon_calc_stats_rl/s.F ; will keep the old one
+     (mon_printstats_rl/s,F mon_stats_rl/s.F) just for bare statistics.
+   - use hFac & 2-D mask (instead of 3-D mask + hFac in previous mon_stats_rl.F).
+   - change del2 calculation.
+   - use interior masks (instead of maskH, <- to be remove).
+   - shorter monitor suffix for forcing stats ("forcing" instead of "extforcing").
+ o mask & obcs:
+   - define 2-D "interior" masks (i.e., zero beyond OB) at 3 locations (C, W & S).
+   - move global area computation from ini_masks_etc.F to ini_linear_phisurf.F
+     (called after packages_init_fixed)
+ o pkg/obcs:
+   - move bi,bj loops into obcs_calc, so obcs_prescribe_read is called only once.
+     Fixes bug in obcs+exf with nSx*nSy.GT.1
+   - fix multi-tile handling in obcs balance code
+ o nonHydrostatic:
+   - Implement AB-3 for non-hydrostatic vertical momentum ;
+     (change ordering of var. stored in pickup file when using NH)
+   - move NH code from solve_for_pressure.F to 2 new S/R: PRE_CG3D & POST_CG3D.
+   - add 2-D field to store Hydrostatic Surface Pressure adjusment from cg3d_x
+     (in prep. for new NH free surface form).
+ o pkg/obcs:
+   add files & OB-variables for wVel (Non-Hydrostatic) with useOBCSprescribe
+ o model/src:
+   fix 2-D solver initialisation for deep-atmosphere (p-coord) with topography
+ checkpoint61z (2009/12/01)
+ o nonHydrostatic:
+   Fix missing vertical flux of vert. momentum near surface (k=1). This fixes
+     a spurious source of energy in simple baroclinic adjusment test case.
+   Update all non-hydrostatic exp output.
+ o model/src (3-d solver):
+   Change again 3-D solver free-surface RHS term when exactConserv=T:
+     simpler, consistent with exactConserv, and works with implicDiv2Dflow < 1
+     (which was not the case with previous formulation).
+   To recover previous version, just reset "oldFreeSurfTerm" to previous value.
+   Affects results of exp. global_ocean.cs32x15.viscA4 & hs94.cs-32x32x5.impIGW.
+ o nonHydrostatic:
+   - compatible with implicDiv2Dflow < 1 ; + implement implicit factor
+     for Non-Hydrostatic pressure gradient (similar to implicSurfPress).
+   - change 3-D solver to work with r* (for now, only with linear free-surf.)
+   - add few debug diagnostics (cg3d_x, residual)
+ o model/src:
+   fix missing EmPmR in 3-D solver RHS (was in cg2d_b but missing in cg3d_b).
+     update output of exp. global_ocean.cs32x15.viscA4
+ o update output of exp. global_ocean.cs32x15.icedyn after removing
+   #define SEAICE_OLD_AND_BAD_DISCRETIZATION from SEAICE_OPTIONS.h
+ o add entry points for Gianmaria's Nesting pkgs (from Contrib/nesting_sannino)
+ o mnc: add horizontal grid coordinates (XC,YC) and (XG,YG) to netcdf output
+   for complex grids, for now only to "state", "adstate", "adexf", "adseaice"
+ o model: add Christopher Wolfe's implemetation of the single reduction cg2d
+   (d'Azevedo, Eijkhout, and Romine, 1999) with CPP-flag ALLOW_SRCG and
+   runtime flag useSRCGSolver. Modify verification experiment global_with_exf
+   to test this code
+ o pkg/cd_code:
+   Change defaut D-grid time-stepping to get the same for D-grid momentum as for
+    C-grid momentum. D-grid velocity used to be stepped forward in time with
+    Adams-Bashforth only on surface pressure term. Tests show that using AB on
+    D-grid coriolis term improves stability (as expected from CD-scheme paper).
+   To reproduce old results, add 2 options (in CD_CODE_OPTIONS.h).
+   Update results of exp: global_with_exf (x2), ideal_2D_oce, isomip (x2),
+    lab_sea (3 Fwd +3 AD), natl_box (x2), tutorial_global_oce_biogeo (Fwd+AD),
+    tutorial_global_oce_latlon, tutorial_global_oce_optim & tutorial_tracer_adjsens.
+   Keep old results by adding CD_CODE_OPTIONS.h in exp: cfc_example, exp2,
+        global_ocean.90x40x15(+AD), global_ocean_ebm(+AD) and OpenAD.
+ o pkg/obcs:
+  - fix bug in initialisation (broken since Oct 1rst modification)
+    for useOBCSprescribe without useEXF.
+ checkpoint61y (2009/11/15)
+ o pkg/seaice
+  - change (once again) the discretization for the evp solver: rather than
+    squaring the averages of strain rates, average the squares to give
+    a better approximation to VP behavior (in simple test); this breaks
+    verification experiments that use EVP (lab_sea and lab_sea.hb87)
+     --> update outputs
+ o add CPP-flag (in mom_calc_visc.F) and TAF directive (in gmredi_slope_limit)
+   to improve vectorization of adjoint code on TARGET_NEC_SX
+ o verification/vermix:
+   - change vermix to a more "classical" 1d column with high vertical
+     resolution, seasonal heat flux forcing and constant wind forcing
+     --> update outputs
+ o pkg/seaice
+  - fix diagnostics of principal stress components for EVP
+  - add optional diagnostics of non-linear convergence for LSOR solver
+  - make maximum zeta a runtime parameter
+ o model/src (3-d solver):
+   Undo modif from Dec 12, 2005 (solve_for_pressure.F cvs version v.49),
+    which consisted in removing the Surf. Non-Hydrostatic pressure from the
+    whole column and adding it to Eta (inspired from Casualli, 1999):
+    Only affects 3-D solver initial guess and only if using ExactConserv,
+    but tests did show a degradation of solver convergence. For this reason,
+    decide to disable this piece of code.
+    to recover previous version, just set zeroPsNH = exactConserv (line 78).
+   Update output of exp. global_ocean.cs32x15.viscA4 & hs94.cs-32x32x5.impIGW
+ o pkg/ggl90:
+  - fix previous modif (unfortunatly has not been documented here).
+ o pkg/seaice/autodiff:
+  - add CPP flag to include clipping of zeta in EVP code;
+    although clipping of zeta is not necessary for EVP and not recommended
+    it was done by default, now clipping is disabled by default
+  - modify computation and store zetaC/Z in seaice_evp for TAF
+  - add CPP-flag SEAICE_ALLOW_CLIPVELS (undefined by default)
+  - change seaice_calc_viscosities/strainrates for better
+    vectorization after AD by TAF
+  - rearrange common blocks in SEAICE.h once again for easier dumps of
+    adjoint output, adjust adcommon.h and g_common.h
+  - change flux form of default advection scheme for better vectorization
+    of adjoint code
+  - modify lab_sea/input.lsr to test the flux form of default advection
+    scheme
+ o autodiff: fix seaice fields in g_common.h (left over from 3 to 1 level
+   transition in checkpoint61r)
+ checkpoint61x (2009/10/19)
+ o adjoint: adding two new verification experiments
+   * tutorial_global_biogeo: an online dic sensitivity experiment
+     (work with G. Forget)
+   * tutorial_dic_adjoffline: an offline dic sensitivity experiment
+     (an update of the Dutkiewicz et al., 2006 paper)
+   Both use the same CO2FLUX cost function, but different controls
+   Gradient checks look good, but some recomp. could still be traightened out
+   Should add xx_dic control variable to test at some point
+ o model/src:
+   add run-time parameters to check and/or mask initial Temp & Salt
+ o pkg/ptracers:
+   apply zonal filter (if used) to all passive tracers
+ checkpoint61w (2009/10/12)
+ o adjoint:
+   * update and finish work on adjoint of dic package (G. Forget)
+   * start adjoint of offline package
+   * bug fix for cube-sphere TLM code (active_file_g.F)
+ o tutorial_global_oce_optim:
+   now tested with 4 tiles (change data.grdchk and update output_adm.txt)
+   and add SIZE.h_mpi for MPI testing
+ o pkg autodiff
+  - fix bug in autodiff_restore
+  - make genmake2 remove comments and empty lines from ad_input_code.f in
+    order to reduce file size (new script file remove_comments_sed)
+ o allows to specify vertical profile of vertical viscosity (viscArNr)
+ o pkg autodiff
+   autodiff_ini_model_io: comment out writing of grid information to netcdf
+   files, because at this time the grid fields are a bunch of zeros
+   (this is analogous to ini_mnc_vars.F)
+ o pkg seaice/autodiff:
+  left-over from removing the 3-time-level fields:
+  - small rearrangement of common blocks (SEAICE.h)
+  - fix field declaration in order to get meaningful output in
+    adseaice.*.nc (adcommon.h)
+ o pkg obcs:
+  - go through NH code only if nonHydrostatic=T
+  - fix restart for Orlanski (Hydrostatic; still to fix NH+Orlanski restart)
+  - move call to OBCS_CALC before SEAICE_MODEL which needs seaice-obc fields
+    => Update output of experiment seaice_obcs
+  - useOBCSbalance: code is wrong with multi-tile / proc: add a stop.
+  - fix NH+Orlanski restart (add wvel OBC value in pickup file)
+  - fix restart for useOBCSprescribe + useEXF
+ o pkg ctrl
+  - make obcs as control parameter work also with useSingleCPUio
+  - replace a few sny and snx by Ny and Nx to be consistent with
+    ctrl_set_globfld_x/yz.F
+ o pkg seaice
+  - re-introduce global field frWtrAtm for the case of
+    ALLOW_MEAN_SFLUX_COST_CONTRIBUTION defined (SEAICE.h, seaice_growth.F)
+  - catch the case of an empty filename in seaice_cost_init_fixed.F
+ o pkg ecco:
+  - small bug fixes in the_main_loop
+   . fix order of monitor arguments
+   . change SEAICE_MULTILEVEL to SEAICE_MULTICATEGORY
+   . move include DYNVARS.h up outside the ALLOW_AUTODIFF_TAMC block so
+     that ALLOW_ECCO_FORWARD_RUN works with NONLIN_FRSURF
+  - replace cos(yc*deg2rad) by _rA in cost_mean_heat/saltflux.F, fix the
+    imbalance diagnostics for wmean_h/sflux = 0
+  - add actual values to f_obcsn/s/w/e in ecco_cost_final.F
+  - catch the case of empty filenames in ecco_cost_init_fixed.F
+    and ecco_readparms.F
+  - fix the logic of wsalt=0.and.wsalt2=0 to wsalt=0.or.wsalt2=0 (and theta)
+    to make this statement meaningfull in ecco_cost_weights.F
+ o pkg zonal_filt:
+   - change ZONAL_FILTER S/R interface (allows to filter 2-D fields)
+   - when using rStar, filter uVel*hFacW instead of uVel
+    (tested without topography: fix a Pb of growing instability with NLFS)
+ o pkg/aim/thsice:
+  -Add capacity to read a Q-Flux to be applied in slab-mixed layer thsice_slab_ocean.F
+   (works as SST restoring)
+ o pkg/thsice:
+  -add specific parameter for salt restoring in slab mixed-layer
+    (by default equal to the temperature restoring)
+ checkpoint61v (2009/09/21)
+ o pkg/kpp:
+  -add double diffusive contributions as a hack, turned off by default
+   for now, and the code can be excluded with a CPP-flag
+   EXCLUDE_KPP_DOUBLEDIFF just as EXCLUDE_KPP_SHEAR_MIX
+  -add a verification experiments to "vermix" to test this code
+ o pkg/mom_common:
+   Move computation of length scales to mom_init_fixed.F (avoid recomputation
+   at each time-steps*levels).
+ o pkg/layers:
+   Created a new package for computing volume fluxes in temperature or
+   [not yet implemented] density layers, e.g. for calculating residual
+   overturning circulations.
+ o pkg/diagnostics:
+   implement a RS type version for the set of DIAGNOSTICS-FILL subroutines
+ o fix few RS/RL type mismatch (check with ifort 11.1 "-warn all" option)
+ o pkg/mdsio (& pkg/rw): rework high level S/R interface:
+   To avoid mixing type (RS/RL) of input/output array argument,
+   replace single mixed-type array with a pair from each type (RS/RL).
+ o setting pickupSuff force to start from a pickup (even if nIter0=0): this
+   is now implemented for all pkgs (previously only done for the main pickup)
+ checkpoint61u (2009/08/25)
+ o pkg/obcs:
+   - change OB?eta from _RS to _RL and put them into a separate commen block
+   - add code to read OB?eta from a file via obcs_prescribe_read: the code
+     compiles and does not destroy any other experiments, the data is read
+     properly, but the code is not tested in actual applications
+ o ini_mnc_vars.F: if available (ALLOW_CAL), use startTime_1 and 2 to
+   create a meaningful unit attribute for the time coordinate variable
+ o pkg/ebm: add plenty of missing "_d 0" ;
+    update results of experiment global_ocean_ebm (fwd + adjoint tests)
+   Notes: several pieces of code only works for (very) specific set up
+    (domain size, lat range, etc ...); should be documented & stop if one
+    of those assumptions is not meet.
+ o pkg/seaice: add missing "_d 0" in HSNOW initialisation
+    update results of experiments: lab_sea (3 fwd tests + 2 adjoint tests)
+       and offline_exf_seaice (seaicetd + adjoint).
+ o add missing "_d 0" in ShortWave flux penetration (S/R SWFRAC):
+    update results of experiments: lab_sea (4 fwd tests + 3 adjoint),
+     seaice_obcs, global_ocean.cs32x15 (icedyn & thsice) and natl_box (x2).
+ o few changes to pass when compiling with strick checking of arguments
+    across S/R (allow to find few bugs in S/R calls).
+ o pkg/seaice:
+  - seaice_evp: move if-statement out of loop (TEM) at the cost of 11 new
+d-fields, for slightly better performance
+ checkpoint61t (2009/07/22)
+ o pkg/seaice:
+  - remove unused variables in seaice_evp
+  - reduce number of SQRT in seaice_evp and seaice_calc_viscosities
+ o eeset_parms.F, open_copy_data_file.F & ini_parms.F:
+    named file replacing SCRATCH files (for TARGET_BGL & TARGET_CRAYXT):
+    each processor opens a different file (a fix from Matt).
+ o cg2d:
+    use simple EXCH (overlap size = 1 and ignore corners), like in cg3d.F :
+    this reduces number of EXCH calls by 2 when using exch2.
+    For now, keep previous size array for gc2d_nsa.F to avoid Pb with store
+    directives and missing simple EXCH (exch_s3d_rx) adjoint code.
+ o pkg/thsice:
+    add code for Near Infra-Red albedo (from Jeff)
+    (turned on with run-time flag: thSIce_calc_albNIR, in data.ice).
+ o ini_model_io:
+    move (from packages_readparms.F & initialise_fixed.F) to ini_model_io.F
+    MNC & MONITOR initialisation calls; move MNC calls from {pkg}_readparms.F
+    to {pkg}_init_fixed.F for {pkg}= kpp, seaice & shelfice.
+ checkpoint61s (2009/06/30)
+ o pkg/exch2 (exch2_rxN_cube*):
+    remove last BARRIER (no need to synchronise after getting data from shared
+    buffer (get) as long as any change to buffer (put,recv) is between BARRIER)
+ o change tiling of natl_box (from 2 to 4 tiles) to get it tested with MPI+MTH
+   and generate new output (for the 2 tests) using default rotationPeriod.
+ o pkg/exch2:
+   - always call exch2_*_cube, not exch-1 anymore, if useCubedSphereExchange=F
+     (was already the case with AUTODIFF_EXCH2 defined)
+   - add bj in exch2 arrays and S/R.
+   - can now use pkg/exch2 for regular (non CS) set-up; switch test experiment
+     MLAdjust to exch2 (identical results except with MPI -> truncation diff);
+ o add pkg/longstep for ptracer timestep a multiple of U/V/T/S timestep
+   - adds deltaT argument to the subroutines TIMESTEP_TRACER DWNSLP_APPLY
+     GAD_ADVECTION GAD_CALC_RHS GAD_IMPLICIT_R GAD_SOM_ADVECT
+   - verification experiment natl_box.longstep
  o build_options: ifort+mpi_aces optfile (following Constantinos advise):
    allow different versions of ifort (8 or 9) and different versions
     of mpi (mpich or mpich2) to be used with the same optfile.
    requires to load a netcdf module and set MPI_INC_DIR (see comments inside
     optfile). Change testing scripts (example_scripts/ACESgrid) accordingly.
+ o pkg/seaice:
+   fix previous modif (3-level field removed) for old-pickup reading
- checkpoint61r
+ checkpoint61r (2009/06/25)
  o pkg/seaice:
   - clean up the 3-time levels of UICE,VICE,HEFF,AREA in three steps:
 . introduce fields for time step (N-1)
-Line 24 
 o pkg/seaice:
+Line 6249 
 o pkg/seaice:
   - adjusted adjoint accordingly;
     gradient checks have improved by an order of magnitude!
- checkpoint61q
+ checkpoint61q (2009/06/22)
  o pkg/seaice: fix bug in free slip boundary conditons for LSOR solver
   - the boundary conditions along open boundaries are unclear, because the
     associated masks are set to zero and are thus treated as closed when
-Line 49 
 o pkg/seaice:
+Line 6274 
 o pkg/seaice:
   - add diagnostics for surface temperature, atmospheric and oceanic
     heat flux, and atmospheric and oceanic ice growth
- checkpoint61p
+ checkpoint61p (2009/06/10)
  o eesupp (global_max & global_sum):
   - add one more element to buffer (start at index 0) for GL_MAX/SUM output;
   - remove starting & endding barrier (no longer needed)
-Line 111 
 o eesupp:
+Line 6336 
 o eesupp:
    should be called before a "stop" if we know that all process are going
    to stop; if one Proc does call this S/R, will hang in MPI_FINALISE.
- checkpoint61o
+ checkpoint61o (2009/05/26)
  o pkg/exch2: change check_depths to issue just a warning (instead of error+stop)
  o model/src/ini_curvilinear_grid.F:
     compute angleSin/CosC when they are not read from a file
-Line 152 
 o pkg/exch2:
+Line 6377 
 o pkg/exch2:
   - add examples (e.g., for lat-lon-cap_120) of parameter file "data.exch2"
     in utils/exch2/input.
- checkpoint61n
+ checkpoint61n (2009/05/12)
  o eesupp & mdsio (SingleCpuIO):
    - move mapping to global io-buffer inside gather_2d/scater_2d: this save
      memory (1 less 2D global RL array); skip 1 buffer copy; and only send/
-Line 165 
 o pkg/mdsio: in preparation for topology
+Line 6390 
 o pkg/mdsio: in preparation for topology
      when using exch2. Add S/R to map global io-buffer to global model array.
    - uses exch2_global_Nx,y instead of exch2_domain_nxt,nyt.
- checkpoint61m
+ checkpoint61m (2009/04/29)
  o write_utils : change WRITE_1D_R8 to WRITE_1D_RL
    and add 3 other S/R for other types (R4,R8,RS).
    Change calls to WRITE_0D/1D_R[4,8,S,L] to match the type of argument.
-Line 201 
 o pkg/exch2 (+ utils/exch2): ignore blan
+Line 6426 
 o pkg/exch2 (+ utils/exch2): ignore blan
    and keep the original tile numbering. Note: compatible with old
    W2_EXCH2_TOPOLOGY.h & w2_e2setup.F topology files.
- checkpoint61l
+ checkpoint61l (2009/04/07)
  o Overlaps had been forgotten in calculating ijk keys : fixed
  o fix cyrus makedepend for gcc 4.4
  o experiment fizhi-cs-aqualev20:
-Line 249 
 o pkg/seaice:
+Line 6474 
 o pkg/seaice:
      is defined, SEAICE_TEST_ICE_STRESS_1 is renamed into SEAICE_BICE_STRESS
    - seaice_growth: replace computation of UG by a simple copy from wspeed
- checkpoint61k
+ checkpoint61k (2009/03/18)
  o pkg/seaice: a few bug fixes mostly concerning the metric terms:
    seaice_lsr: fixed a few metric terms,
                affects lab_sea.lsr, lab_sea.salt_plume, seaice_obcs
-Line 266 
 o pkg/seaice: a few bug fixes mostly con
+Line 6491 
 o pkg/seaice: a few bug fixes mostly con
    updated all relevant verification experiments (except lab_sea//output_adm.txt
      which was left over, but fails at level 7 & 6)
- checkpoint61j
+ checkpoint61j (2009/03/17)
  o pkg/seaice: turn a few hard wired parameters into run time parameters
  o pkg/seaice/exf/monitor: turn netcdf coordinate variable T into model
    time in seconds as promised by the usints in seaice_monitor and exf_monitor
-Line 294 
 o autodiff
+Line 6519 
 o autodiff
    TAF store directivs "byte" and "kind" seem equivalent;
    Most tamc.h have been updated correspondingly.
- checkpoint61i
+ checkpoint61i (2009/02/13)
  o autodiff:
    fix autodiff_sore/_restore indices for obcs
    (spotted by I. Hoteit, M. Mazloff)
-Line 329 
 o pkg/ggl90: a few modifications:
+Line 6554 
 o pkg/ggl90: a few modifications:
  o rename thetaMin,phiMin -> xgOrigin,ygOrigin
    (maintain temporary backward compatibility, until next checkpoint)
- checkpoint61h
+ checkpoint61h (2009/01/27)
  o pkg/diagnostics with "periodic averaging diagnostics":
    fix S/R DIAGNOSTICS_COUNT ; hack diagnostics_out.F to get NetCDF output.
  o pkg/my82: add missing "_d 0" ; update output of exp. vermix.my82
-Line 353 
 o pkg/mdsio: read/write vector:
+Line 6578 
 o pkg/mdsio: read/write vector:
    (drop to 4 digits matching for grad). But this test does not look very
    reliable (was already failling on eddy, fc5, at 6.digits). Update output.
- checkpoint61g
+ checkpoint61g (2008/12/29)
  o pkg/flt:
    - move FLT_CPPOPTIONS.h to FLT_OPTIONS.h (standard name)
     + make OPTIONS file more standard.
-Line 366 
 o pkg/obcs: fix a CPP-flag, bug reported
+Line 6591 
 o pkg/obcs: fix a CPP-flag, bug reported
  o gather_2d.F/scatter_2d.F: suppress vectorisation on NEC SX in respond to
    a still unfixed compiler/optimization bug
- checkpoint61f
+ checkpoint61f (2008/11/21)
  o pkg/seaice, LSR solver: fix bug in GLOBAL_MAX calls ;
    update results of global_ocean.cs32x15.icedyn test.
  o move getcon.F from model/src to pkg/fizhi.
-Line 395 
 o fix CPP-flag REAL4_IS_SLOW, when _RS e
+Line 6620 
 o fix CPP-flag REAL4_IS_SLOW, when _RS e
   - tested in 2 experiments: inverted_barometer & solid-body.cs-32x32x1
     (generate new output).
- checkpoint61e
+ checkpoint61e (2008/10/23)
  o gmredi (Visbeck-variable-K):
    - fix the "OLD_VISBECK_CALC" option + move the #undef to GMREDI_OPTIONS.h
    - change computation of Visbeck-K where Slope > Smax :
-Line 420 
 o pkg ggl90:
+Line 6645 
 o pkg ggl90:
          scale in ggl90_calc.F
          (see Eq. (2.35) in Blanke and Delecluse, JPO, 1993)
- checkpoint61d
+ checkpoint61d (2008/09/25)
  o adjoint modifs
    - adapt to new field rhoInSitu
    - allow to revert from StoreDynVars2D, StoreDynVars3D
-Line 447 
 o add initialisation of deepFac if using
+Line 6672 
 o add initialisation of deepFac if using
    ini_reference_state.F --> load_ref_files.F (- set anelastic factors)
  o change FIND_RHO_SCALAR : return rho (instead of rho - rhoConst)
- checkpoint61c
+ checkpoint61c (2008/08/30)
  o add option ALLOW_ADDFLUID and run-time selector "selectAddFluid"
    to add mass source/sink of fluid in the interior (3-D generalisation
    of oceanic real-fresh water flux).
-Line 465 
 o change FIND_RHO to FIND_RHO_2D :
+Line 6690 
 o change FIND_RHO to FIND_RHO_2D :
    pass arguments tFld & sFld as local (tile) 2D-arrays ; +fix EOS_CHECK.
  o new pkg: cheapaml
- checkpoint61b
+ checkpoint61b (2008/08/05)
  o exch2:
    change index bounds in rx2_cube exchanges (new S/R: EXCH2_GET_UV_BOUNDS)
    - no longer depend on the order sequence (N,S,E,W).
-Line 480 
 o exch2:
+Line 6705 
 o exch2:
     more intuitive this way) ; rename/remove some variables.
   - change utils/exch2/matlab-topology-generator & code_mods accordingly.
- checkpoint61a
+ checkpoint61a (2008/07/29)
  o exch2/matlab-topology-generator:
    fix bug in index bounds for N-S internal exchange (hard to tell if this
    had any effect on the solution).
-Line 489 
 o pkg/mnc: small fix in mnc_handle_err:
+Line 6714 
 o pkg/mnc: small fix in mnc_handle_err:
  o testreport: modify syntax of awk, so that it works also with
    awk, and not only with nawk and gawk
- checkpoint61
+ checkpoint61 (2008/06/24)
  o autodiff
    Change default for TAF usage by removing argument '-nonew_arg'
    This changes TAF subroutine argument list (ordering of active var.)
-Line 500 
 o autodiff
+Line 6725 
 o autodiff
    Tested TAF version is 1.9.22
    N.B.: exch2 hand-written adjoint code currently not TAMC compatible
- checkpoint60
+ checkpoint60 (2008/06/19)
  --->>> This is the last checkpoint for which generating the adjoint
  --->>> is done via the TAMC-compatibility TAF-flag "-nonewarg"
  --->>> by default.
-Line 525 
 o bridging the gap between eddy stress a
+Line 6750 
 o bridging the gap between eddy stress a
    The key modifications are in model/src/taueddy_external_forcing.F
    pkg/gmredi/gmredi_calc_*F pkg/gmredi/gmredi_*transport.F
- checkpoint59r
+ checkpoint59r (2008/05/29)
  o new S/R (pkg/mdsio/mdsio_facef_read.F) reading of sNx+1 x sNy+1 array
    from per-face file (take S/R READSYMTILE_RS out of ini_curvilinear_grid.F);
    fix option to read coriolis(@ cell-corner) from files with CS-grid.
-Line 556 
 o pkg/ptracers: add second-order moment
+Line 6781 
 o pkg/ptracers: add second-order moment
    (#define PTRACERS_ALLOW_DYN_STATE in PTRACERS_OPTIONS.h)
    and requires a fortran 90 compiler
- checkpoint59q
+ checkpoint59q (2008/05/06)
  o pkg/mom_vecinv: Add energy & enstrophy conserving scheme (selectVortScheme=3)
     (from Sadourny, described by Burridge & Haseler, ECMWF Rep.4, 1977)
  o Refresh tutorial_global_oce_biogeo, notably:
-Line 591 
 o thsice pkg:
+Line 6816 
 o thsice pkg:
    - Parameter rhowi eliminated to be replaced by floodFac = (rhosw-rhoi)/rhos
    --> changes results of global_ocean.cs32x15.icedyn and global_ocean.cs32x15.thsice
- checkpoint59p
+ checkpoint59p (2008/04/10)
  o gchem / dic / cfc :
    - add useDIC, useCFC , read from "data.gchem" (& hold in GCHEM.h);
    - add new parameter files: "data.dic" & "data.cfc" ;
-Line 617 
 o in mom_calc_visc, fix average value of
+Line 6842 
 o in mom_calc_visc, fix average value of
    bottom ; only used with variable horizontal viscosity and non-hydrostatic.
    also fix diagnostics VISCAHW & VISCA4W.
- checkpoint59o
+ checkpoint59o (2008/03/07)
  o dome/code/obcs_calc.F: avoid division by zero (detected using gfortran).
  o change the loop ordering in most gad_*_adv_x.F to improve vectorization:
    move a few statemens out the main loop into separate loops
-Line 658 
 o pkg/ctrl:
+Line 6883 
 o pkg/ctrl:
      introducing a generic routine (ctrl_map_ini_gen.F).
    - Modification of ctrl_bound/adctrl_bound handling control vector bounds.
- checkpoint59n
+ checkpoint59n (2008/02/09)
  o pkg/diagnostics: for large number of diagnostics, store diagnostic mate
    number in dedicate array "hdiag":
    - new version of S/R DIAGNOSTICS_ADD2LIST : DIAGNOSTICS_ADDTOLIST
-Line 712 
 o pkg/seaice: add a new flag SEAICEuseTE
+Line 6937 
 o pkg/seaice: add a new flag SEAICEuseTE
    for now this is only available for the C-grid code and also within
    #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
- checkpoint59m
+ checkpoint59m (2008/01/14)
  o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
    and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
  o gad_som : fix flux output (& diagnostics) to have same units as other
-Line 730 
 o pkg/obcs and pkg/seaice:
+Line 6955 
 o pkg/obcs and pkg/seaice:
  o pkg/salt_plume: added various options for salt plume depth
    criterion and for vertical distribution of the salt
- checkpoint59l
+ checkpoint59l (2007/12/18)
  o pkg/ptracers: new version of ptracers pickup:
    read meta file and write only fields which are needed to restart.
    ( same logic as main pickup file ; also using pickupStrictlyMatch )
-Line 752 
 o no longer write pickup from THE_MODEL_
+Line 6977 
 o no longer write pickup from THE_MODEL_
  o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
    or U/VICE from U/VWIND before computing U/VSTRESS
- checkpoint59k
+ checkpoint59k (2007/11/30)
  o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
    dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
  o fix un-initialised variable problem (in mom_vecinv & shap_filt):
-Line 774 
 o pkg/ptracers:
+Line 6999 
 o pkg/ptracers:
    use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
    to-do: fix pkg/diagnostics when large number of diagnostics are defined.
- checkpoint59j
+ checkpoint59j (2007/11/09)
  o in pkgs: dic, obcs, offline, rbcs:
    standard way to compute coeff. for time interpolation between 2 time reccords
    which retains full precision (& make results less dependent on compiler).
-Line 817 
 o pkg/mdsio & pkg/rw:
+Line 7042 
 o pkg/mdsio & pkg/rw:
  o added open boundary conditions capability for seaice
      HSNOW, HSALT, UICE, and VICE
- checkpoint59i
+ checkpoint59i (2007/10/21)
  o adjoint:
    * fix multiDimAdvection adjoint
      (partial recomputation problem by TAF for fVerT(:,:,kDown)
-Line 858 
 o change units of EmPmR (inside the code
+Line 7083 
 o change units of EmPmR (inside the code
    Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
    Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
- checkpoint59h
+ checkpoint59h (2007/09/29)
  o pkg/exf:
    - improve vectorization by moving if-statement out of loops in
      exf_mapfields, exf_radiation
-Line 891 
 o pkg/thsice:
+Line 7116 
 o pkg/thsice:
  o testreport: change AD testing : check against results/output_adm.txt
    using same scripts as for forward test.
- checkpoint59g
+ checkpoint59g (2007/09/17)
  o adjoint testing: in preparation for changing testreport:
    - output format: cost and grad written on separated lines
    - ad output results in directory "results" (instead of "results_ad")
-Line 936 
 o pkg/cd_code: add brackets in multiple
+Line 7161 
 o pkg/cd_code: add brackets in multiple
    global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
    ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
- checkpoint59f
+ checkpoint59f (2007/08/21)
  o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
  o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
    a bounded range (in forward mode)
-Line 967 
 o pkg/seaice
+Line 7192 
 o pkg/seaice
  o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
     output of global_ocean.cs32x15.thsice .
- checkpoint59e
+ checkpoint59e (2007/07/26)
  o exch2: new S/R that only use the cube-tracer (center-position) exchange:
    for B-grid vector (not yet tested) and C-grid vector (<- only used
    when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
-Line 997 
 o pkg/seaice:
+Line 7222 
 o pkg/seaice:
    * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
    * applied OBCS T/S mask to HEFFM sea ice mask
- checkpoint59d
+ checkpoint59d (2007/06/21)
  o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
   for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
   (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
-Line 1043 
 o pkg/seaice:
+Line 7268 
 o pkg/seaice:
     It is turned off by default (=-1.), because it changes the results.
   - make it possible to read AREA from a file, too.
- checkpoint59c
+ checkpoint59c (2007/06/04)
  o add S/R and diagnostics for oceanic mixed-layer depth
  o move GMRedi call after all vertical mixing schemes (including KPP)
  o pkg/thsice:
-Line 1076 
 o adjoint:
+Line 7301 
 o adjoint:
    Storing is now bundled into large arrays to optimized I/O
    (and second step in cleanup of the_main_loop)
- checkpoint59b
+ checkpoint59b (2007/05/16)
  o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
    - export/import (between ocean & coupler) fields needed for ocean DIC.
  o pkg/seaice:
-Line 1147 
 o pkg/seaice
+Line 7372 
 o pkg/seaice
  o OpenAD
   - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
- checkpoint59a
+ checkpoint59a (2007/05/01)
  o pkg/seaice: some parameter clarifications and a little bit of clean up
  o pkg/thsice: rename run-time parameters:
     himin       -> hIceMin
-Line 1189 
 o pkg/seaice: fix bug in evp solver, whi
+Line 7414 
 o pkg/seaice: fix bug in evp solver, whi
  o pkg/kpp: add code to have mixing in shelf ice caverns
    - add myThid to all kpp routines (long overdue)
- checkpoint59
+ checkpoint59 (2007/04/19)
  o pkg/exf:
    - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
      ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
-Line 1215 
 o pkg/thsise
+Line 7440 
 o pkg/thsise
    - 2nd set of modifs for thsice adjoint in conjunction with exf
  o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
- checkpoint58y_post
+ checkpoint58y_post (2007/04/15)
  o Added capability for latitudinal dependence of Bryan and Lewis, 1979
    vertical diffusivity, similar to that in MOM4; turned on using
    #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
-Line 1231 
 o ice dynamics (pkg/seaice) with thsice
+Line 7456 
 o ice dynamics (pkg/seaice) with thsice
         - better when using non-linear advection scheme (not yet fully tested)
         - can also be used in atmospheric set-up (for now, only the diffusion).
- checkpoint58x_post
+ checkpoint58x_post (2007/04/04)
  o IO option for global-file compact format:
    - add options when generating topology (utils/exch2/matlab-topology-generator)
    - add I/O capability (pkg/mdsio).
-Line 1239 
 o IO option for global-file compact form
+Line 7464 
 o IO option for global-file compact form
    for now long-line format not yet supported by pkg/mdsio (& exch2).
  o shelfice: add a few diagnostics
- checkpoint58w_post
+ checkpoint58w_post (2007/03/13)
  o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
    rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
    (and replace horiVertRatio in NH code).
-Line 1260 
 o cpl_aim+ocn exp.: use consistent rhoCo
+Line 7485 
 o cpl_aim+ocn exp.: use consistent rhoCo
  o move call to cal_readparms up to make calendar parameters/variable available
    to all packages
- checkpoint58v_post
+ checkpoint58v_post (2007/02/08)
  o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
    useDynP_inEos_Zc tested.
  o pkg/exf: changes to properly interpolate/mask/scale initial fields
-Line 1279 
 o 2nd-Order Moment Advection Scheme (Pra
+Line 7504 
 o 2nd-Order Moment Advection Scheme (Pra
   - use this scheme for temperature & salinity in 2 advection test exp.:
     advect_xy & advect_xz, respectively.
- checkpoint58u_post
+ checkpoint58u_post (2007/01/12)
  o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
  o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
  o testreport: add option "-skipdir" to skip some test.
-Line 1294 
 o add option (linFSConserveTr) to correc
+Line 7519 
 o add option (linFSConserveTr) to correc
  o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
  o pkg/thsice: fix reading mnc-pickups
- checkpoint58t_post
+ checkpoint58t_post (2006/12/30)
  o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
  o pkg/mdsio:
   - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
-Line 1337 
 o pkg/seaice: overhaul of thermodynamics
+Line 7562 
 o pkg/seaice: overhaul of thermodynamics
   - introduce a few local fields to avoid modifying external fields such
     as atemp, etc.
- checkpoint58s_post
+ checkpoint58s_post (2006/12/11)
  o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
    changed exf_set_gen.F so that
      genperiod=0 means input file is one time-constant field and
-Line 1371 
 o modifications to pkg/seaice/growth.F a
+Line 7596 
 o modifications to pkg/seaice/growth.F a
    as actual snow thickness.  It now refers everywhere to effective snow
    thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
- checkpoint58r_post
+ checkpoint58r_post (2006/11/17)
  o modifications to pkg/seaice/growth.F, which change results of
    lab_sea experiment: fixes pertain to melting snow over open water, to
    masking EVAP under sea ice, and to using the correct AREA variable for
-Line 1395 
 o Adding some pkg/diagnostics capability
+Line 7620 
 o Adding some pkg/diagnostics capability
  o ctrl: adding new control variables:
    lwflux, lwdown, evap, snowprecip, apressure, runoff
- checkpoint58q_post
+ checkpoint58q_post (2006/10/20)
  o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
 /6-deg Southern Ocean configuration by 8% on IBM Datastar and
    high_res_cube configuration by 4% on Columbia.
-Line 1406 
 o new function "MASTER_CPU_IO" (=T if ma
+Line 7631 
 o new function "MASTER_CPU_IO" (=T if ma
    single CPU io) so that TAF does not have to see EESUPPORT.h
  o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
- checkpoint58p_post
+ checkpoint58p_post (2006/09/08)
  o obcs: stop if obcs is used with useCDscheme = .true.
  o shelfice:
   - fix a sign error so that no slip at shelfice interface works
-Line 1417 
 o diagnoctics: modify UVELPHI and VVELPH
+Line 7642 
 o diagnoctics: modify UVELPHI and VVELPH
  o added adjoint exch routined for all exch*3d* routines
    and updated flow directives
- checkpoint58o_post
+ checkpoint58o_post (2006/08/28)
  o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
    remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
  o change controling S/R for writing pickup file (new S/R do_write_pickup)
-Line 1431 
 o shelfice:
+Line 7656 
 o shelfice:
   - add a simple boundary layer scheme to reduce noise
   - fix the indexing in shelfice_u/v_drag so that there will be actually drag
- checkpoint58n_post
+ checkpoint58n_post (2006/08/14)
  o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
     local variable (not in common block).
  o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
-Line 1452 
 o change default MAX_NO_THREADS from 32
+Line 7677 
 o change default MAX_NO_THREADS from 32
    and stop cleanly when MAX_NO_THREADS is too small.
  o add S/R BAR_CHECK to check multi-threaded barrier synchronization
- checkpoint58m_post
+ checkpoint58m_post (2006/07/17)
  o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
     and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
  o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
-Line 1478 
 o calc_gw: true flux-form, account for h
+Line 7703 
 o calc_gw: true flux-form, account for h
    update rotating_tank results, but not plume_on_slope (affected at
    truncation level, 11 digits).
- checkpoint58l_post
+ checkpoint58l_post (2006/07/12)
  o calc_gw:
   - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
   - remove side-drag for now (need to fix it); update plume_on_slope results.
-Line 1496 
 o pkg/ecco:
+Line 7721 
 o pkg/ecco:
  o pkg/rbcs
    * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
- checkpoint58k_post
+ checkpoint58k_post (2006/07/06)
  o testreport:
   - always build in dir. "build" (if not there, mkdir build instead of building
     & running in input)
-Line 1529 
 o tracer advection:
+Line 7754 
 o tracer advection:
     advection subroutine (but still not used within DST advection S/R)
  o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
- checkpoint58j_post
+ checkpoint58j_post (2006/06/15)
  o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
    from file (collects calls previously in FORWARD_STEP)
  o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
-Line 1537 
 o adjoint store dir. adjusted accordingl
+Line 7762 
 o adjoint store dir. adjusted accordingl
  o genmake2
    replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
- checkpoint58i_post
+ checkpoint58i_post (2006/06/14)
  o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
    on wind stress (SEAICEstressFactor defaults to 1.)
  o Total number of Timers is finite (<=40): comment out 2 non-essential one
-Line 1551 
 o pkg/seaice: added SEAICEuseEVPpickup p
+Line 7776 
 o pkg/seaice: added SEAICEuseEVPpickup p
      non-EVP pickup files when using SEAICEuseEVP
    - fix sign error in diffusion in seaice_calc_rhs
- checkpoint58h_post
+ checkpoint58h_post (2006/06/07)
  * Modifications for bottom topography control
    o replace hFacC by _hFacC at various places
    o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
-Line 1561 
 checkpoint58h_post
+Line 7786 
 checkpoint58h_post
    o works for 5x5 box, doesnt work for global_ocean.90x40x15
  * Adding verification for 5x5 box (4-layer) bottom topography control
- checkpoint58g_post
+ checkpoint58g_post (2006/06/07)
  o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
     used for mean seasonal cycle, mean diurnal cycle); add an example
     in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
-Line 1577 
 o couple pkg/thsice to pkg/seaice:
+Line 7802 
 o couple pkg/thsice to pkg/seaice:
  o pkg/seaice
    - make (default) second order advection a bit less confusing?
- checkpoint58f_post
+ checkpoint58f_post (2006/06/05)
  o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
    to pkg/seaice):
    - new routines thsice_map_exf and thsice_get_exf provide the interface
-Line 1608 
 o fix bug in aim+thsice albedo: snow & i
+Line 7833 
 o fix bug in aim+thsice albedo: snow & i
  o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
    testreport accordingly
- checkpoint58e_post
+ checkpoint58e_post (2006/05/17)
  o SEAICE_CGRID adjoint done
  o R_STAR adjoint implemented.
    * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
-Line 1616 
 o R_STAR adjoint implemented.
+Line 7841 
 o R_STAR adjoint implemented.
  o Make pkg/profile fully independent of ecco,cost, etc. stuff
    to be able to use it in pure forward.
- checkpoint58d_post
+ checkpoint58d_post (2006/04/21)
  o upgrade simple test-experiment to tutorial example:
   step.1: duplicate the experiment and (step.2) will remove the old copy.
    tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
-Line 1656 
 o new package prifiles:
+Line 7881 
 o new package prifiles:
  o Benign bug fix in initialization (spotted by M. Mazloff) of
    ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
- checkpoint58c_post
+ checkpoint58c_post (2006/03/23)
  o adjoint: finish NLFS adjoint and provide reference output in
    verification/global_ocean.90x40x15/results_ad_nlfs
  o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
-Line 1690 
 o seaice:
+Line 7915 
 o seaice:
     + move computation of the viscosities eta and zeta into a new separate
       routine (because I need to recompute them in seaice_ocean_stress.F)
- checkpoint58b_post
+ checkpoint58b_post (2006/03/13)
  o AIM+thSIce: fix sign of Short-Wave through the Ice ;
    update output.txt of exp. aim.5l_cs.thSI
  o various mnc cleanups and improvements:
-Line 1753 
 o seaice:
+Line 7978 
 o seaice:
      (turn on with SEAICEuseFluxForm)
    - replace 1 in 3d global fields by kSurface in growth.F
- checkpoint58a_post
+ checkpoint58a_post (2006/02/13)
  o seaice:
    - bug fix in advect.F
  o shelfice:
-Line 1806 
 o pkg/bulk_force:
+Line 8031 
 o pkg/bulk_force:
     and parameters (note: calcWindStress replaces .NOT.readwindstress).
   - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
- checkpoint58
+ checkpoint58 (2006/01/12)
  o add "--embed-source" option to genmake2 which, when the supporting
    tools can be compiled (as determined by genmake2) will turn on the
    embed_files package which then embeds the entire MITgcm source code
-Line 1819 
 o clean up 3-dim. relaxation codes:
+Line 8044 
 o clean up 3-dim. relaxation codes:
    * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
    * Thanks to Tom Haine for testing!
- checkpoint57z_post
+ checkpoint57z_post (2005/12/31)
  o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
    affects output (@ truncation level) of exp. plume_on_slope ; updated.
  o fix the pickup behavior for obcs in combination with ptracers
-Line 1850 
 o Adding Laplacian-type smoothness const
+Line 8075 
 o Adding Laplacian-type smoothness const
    * Absolute scale somewhat unclear so far
    * no area weighting was included since no other cost term does so far
- checkpoint57y_post
+ checkpoint57y_post (2005/12/08)
  First step for a NLFS adjoint
  o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
  o new init. routines for calc_r_star, calc_surf_dr
  o still need to deal with ini_masks_etc
  o testreport seemed happy
- checkpoint57y_pre
+ checkpoint57y_pre (2005/12/08)
  o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
  o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
-Line 1865 
 o cfc fixes for final year of integratio
+Line 8090 
 o cfc fixes for final year of integratio
  o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
    be in GCHEM_OPTIONS).
- checkpoint57x_post
+ checkpoint57x_post (2005/12/04)
  o fix testreport Pb in multiple test experiment.
  o cleanup our namelist syntax in verification:
    - make it more F95 standards compliant (some work still needed)
-Line 1885 
 o adjoint
+Line 8110 
 o adjoint
      (there are a number of extensive recomputations)
    * Initialize certain variables needed for adjoint
- checkpoint57w_post
+ checkpoint57w_post (2005/11/03)
  o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
               fix the singleCpuIO RS version of MDSWRITEFIELD
     and add a WARNING if using globalFiles=T with multi-processors.
-Line 1902 
 o PTRACERS: added namelist parameter PTR
+Line 8127 
 o PTRACERS: added namelist parameter PTR
    ptracers in a large domain with a constant non-zero value. Also,
    untangle ptracers_init.F a little.
- checkpoint57v_post
+ checkpoint57v_post (2005/10/13)
  o change dome exp. to use variable viscosity in side-drag terms.
  o remove all the files from the cfc_offline test since they are now
    incorporated into tutorial_cfc_offline which has been producing
-Line 1943 
 o reduce number of exch calls in shap_fi
+Line 8168 
 o reduce number of exch calls in shap_fi
  o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
    truncation level) 4/5 MLAdjust test results (11&12 digits match).
- checkpoint57t_post
+ checkpoint57t_post (2005/10/03)
  o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
  o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
    same truncation, independent of the face number: affects affects several
-Line 1966 
 o Clean, new version of mom_calc_visc.
+Line 8191 
 o Clean, new version of mom_calc_visc.
    Suggested values of viscosity parameters found in mom_calc_visc.
    Many new viscosity diagnostics available.
- checkpoint57s_post
+ checkpoint57s_post (2005/09/20)
  o Add clearing-house for viscosity calculations, mom_calc_visc and
    correct numerous bugs in LeithD and Smagorinsky discretizations.
    mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
-Line 1992 
 o various changes to mnc including:
+Line 8217 
 o various changes to mnc including:
        and works with both EXCH1 and EXCH2 (but needs more testing)
    - writing works for all verification test cases w/ g77 on Linux
- checkpoint57r_post
+ checkpoint57r_post (2005/09/07)
  o make MNC variable initialization happen earlier
  o add diagnostics for (almost) each term of the momentum Eq.
  o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
-Line 2012 
 o new infrastructure for seaice model vs
+Line 8237 
 o new infrastructure for seaice model vs
  o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
    (see README file)
- checkpoint57q_post
+ checkpoint57q_post (2005/08/19)
  o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
  o fix annoying months-old bug in mnc/mdsio output for seaice pkg
    - bug was reported by Jean-Michel and Ian Fenty
-Line 2029 
 o Modifications to enable scripted COMMO
+Line 8254 
 o Modifications to enable scripted COMMO
    * verification/OpenAD/code/ has necessary scripts and description;
    * converts, compiles and runs successfully;
- checkpoint57p_post
+ checkpoint57p_post (2005/08/01)
  o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
  o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
    (already the case for some pkgs, including recent MNC_init, e.g. thsice)
-Line 2043 
 o Dissipation & phiHyd gradient are alwa
+Line 8268 
 o Dissipation & phiHyd gradient are alwa
    global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
    matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
- checkpoint57o_post
+ checkpoint57o_post (2005/07/30)
  o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
    (2) its ready to be documented during the 20050801 DocFest
  o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
-Line 2052 
 o set to #undef CTRL_SET_OLD_MAXCVARS_30
+Line 8277 
 o set to #undef CTRL_SET_OLD_MAXCVARS_30
    in global1x1_tot/code_seaice_adj to access indices 32, 33
    (worth another tag)
- checkpoint57n_post
+ checkpoint57n_post (2005/07/29)
  o adding precip control xx_precip 32
  o adding swflux control xx_swflux 33
  o Replacing 10 forcing penalty cost routines by 1 generic.
-Line 2068 
 o enable useSingleCpuIO for mdsio vector
+Line 8293 
 o enable useSingleCpuIO for mdsio vector
    (applies in particular to tapelev I/O)
  o removed inefficient K-loop in all active_file*control*.F
- checkpoint57m_post
+ checkpoint57m_post (2005/07/28)
  o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
    and advect_cs (use EXCH-2 and standard cs-32 grid files).
  o pkg/exch2: filling of face-corner halo regions is optional
    (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
- checkpoint57l_post
+ checkpoint57l_post (2005/07/14)
   tag before updating tutorials (pre-release-2)
  o add cos & sin of grid-direction orientation angle (curvilinear grid only,
     for output and interpolation of input fields onto model grid)
-Line 2086 
 o fix aim_diagnostics_init.F mate number
+Line 8311 
 o fix aim_diagnostics_init.F mate number
  o add mnc output capability to diagnostics/diagstat and update
    our cvsignore files for the ACSII output generated
- checkpoint57k_post
+ checkpoint57k_post (2005/07/02)
  o lab_sea now uses diagnostics package and provides a suite of
    new EXF diagnostics output.
- checkpoint57j_post
+ checkpoint57j_post (2005/06/30)
  o exf
    * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
      Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
-Line 2120 
 o fix bug in rStar code (calc_r_star.F)
+Line 8345 
 o fix bug in rStar code (calc_r_star.F)
  o fix few little things to avoid floating error with -ftrapuv (ifort v9)
   (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
- checkpoint57i_post
+ checkpoint57i_post (2005/06/19)
  o Diagnostics package was changed: diagnostic allocation is now deactivated
    by setting an empty file name in the namelist (used to be by setting 0 frequency)
  o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
-Line 2139 
 o pkg/diagnostics:
+Line 8364 
 o pkg/diagnostics:
    tested against monitor output (including land & thSIce) on various exp.
  o make seaice-pkg I/O type flags (MNC/MDS) more standard.
- checkpoint57h_done
+ checkpoint57h_done (2005/05/19)
    tag after changing user customized files (DIAGNOSTICS_SIZE.h,
    data.diagnostics, data.gchem, data.ptracers) is done.
-Line 2148 
 o pkg/diagnostics: prepare for Global/Re
+Line 8373 
 o pkg/diagnostics: prepare for Global/Re
  o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
    and rename it: DIFFERENT_MULTIPLE
- checkpoint57h_post
+ checkpoint57h_post (2005/05/14)
  o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
  o pkg/diagnostics: change output frequency, now in seconds (instead
    of Nb of iterations). This requires to change data.diagnostics.
- checkpoint57h_pre
+ checkpoint57h_pre (2005/05/12)
  o in mnc, let the user create the output dir if both mnc_outdir_date
    and mnc_outdir_num are false
-Line 2166 
 o test AB-3 code with 4th.Order advectio
+Line 8391 
 o test AB-3 code with 4th.Order advectio
  o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
    not mnc -- this mistake was found by JMC and is now corrected
- checkpoint57g_post
+ checkpoint57g_post (2005/04/15)
  o add Adams-Bashforth 3rd Order time stepping:
    - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
    - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
- checkpoint57g_pre
+ checkpoint57g_pre (2005/04/15)
  o make lambda[Theta,Salt]ClimRelax spatially varying
    (default remains spatially uniform constant based on tau)
-Line 2180 
 o added new control variables
+Line 8405 
 o added new control variables
  o separate masks used for ctrl_pack/unpack 'from write_grid' output
    (suggested by G. Forget)
- checkpoint57f_post
+ checkpoint57f_post (2005/04/06)
  o add parameter "baseTime" = model base time = time at iteration zero
    new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
    account for baseTime shift
  o move Coriolis arrays from PARAMS.h to GRID.h
- checkpoint57f_pre
+ checkpoint57f_pre (2005/04/06)
  o mnc-ifying the seaice package
  o introduced an alternative length scale calculation for use in the limiting
-Line 2206 
 o adjoint-related modifications
+Line 8431 
 o adjoint-related modifications
    * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
    * mom_vi_hdissip: to be able to use Leith scheme in adjoint
- checkpoint57e_post
+ checkpoint57e_post (2005/02/28)
  o Adding eddy stress controls a la Ferreira et al.
  checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
-Line 2224 
 o diagnostics: add pickup functionality
+Line 8449 
 o diagnostics: add pickup functionality
  o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
  o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
- checkpoint57d_post
+ checkpoint57d_post (2005/02/11)
  o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
  o modify verification/ideal_2D_oce so that it tests the creation of mnc
    output from the diagnostics package
-Line 2246 
 o move state variable diagnostics to the
+Line 8471 
 o move state variable diagnostics to the
    (note: still needs some work specially for snap-shot diagnostics)
    duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
- checkpoint57c_post
+ checkpoint57c_post (2005/01/27)
  o Change testing option (-ieee) to get closer agreement between g77 & ifort
  o generate new output.txt files on faulks with g77 & the new -ieee option
- checkpoint57c_pre
+ checkpoint57c_pre (2005/01/27)
  o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
    update output.txt of exp. global_ocean.90x40x15
-Line 2282 
 o pkg/mdsio/
+Line 8507 
 o pkg/mdsio/
    * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
    * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
- checkpoint57b_post
+ checkpoint57b_post (2004/12/20)
  o simplify options in diagnostics_fill arguments (remove weird combinations)
  o fix MNC coordinate variables so that they now contain per-face index
    values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
-Line 2328 
 o re-arrange diagnostics pkg initialisat
+Line 8553 
 o re-arrange diagnostics pkg initialisat
     look through the short list of active diag. (instead of the long list)
     create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
- checkpoint57a_post
+ checkpoint57a_post (2004/12/10)
  o this set of changes restores TAMC compatibility
    tested for global_ocean.90x40x15 adjoint on trough
    (what a pain)
- checkpoint57a_pre
+ checkpoint57a_pre (2004/12/10)
  o some modifs in tools/build_options for sunos
  o call ctrl_pack for ctrl at end for optimcycle=0
- checkpoint57
+ checkpoint57 (2004/12/09)
  o add horizontal bi-harmonic viscosity for vertical velocity
    - new parameter viscA4W (defaults to viscA4)
    - affects only non-hydrostatic code
-Line 2355 
 o untangle a few ifdefs related to cost,
+Line 8580 
 o untangle a few ifdefs related to cost,
  o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
    (theta2, salt2 in ecco_cost_weights)
- checkpoint56c_post
+ checkpoint56c_post (2004/12/03)
  o OBCS as control variables
    - update ctrl_ad_diff.list, obcs_ad_diff.list
    - remove balance of obcs controls from default
-Line 2373 
 o exf:
+Line 8598 
 o exf:
  o mdsio:
    - i/o-vector change debugLevel from debLevA to debLevB
- checkpoint56b_post
+ checkpoint56b_post (2004/12/01)
  o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
    is called from DO_THE_MODEL_IO
    - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
-Line 2388 
 o testreport previously did a lousy job
+Line 8613 
 o testreport previously did a lousy job
    testreport.
  o ptracers_monitor: bug fix for MPI
- checkpoint56a_post
+ checkpoint56a_post (2004/11/28)
  o GCHEM: finish reorganizating the package
    - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
      (introduces another 3D-array for each passive tracer, but only if
-Line 2433 
 o GCHEM:
+Line 8658 
 o GCHEM:
    - cleaning up
  o small cleaning of exch2: remove files that are also in eesupp/src
- checkpoint56
+ checkpoint56 (2004/11/17)
  o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
  o mnc: cleanup "full" files--fixes out-of-memory problem
  o ECCO-GODAE
-Line 2463 
 o mdsio: filename info to both stderr, s
+Line 8688 
 o mdsio: filename info to both stderr, s
  o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
    from sign change
- checkpoint55j_post
+ checkpoint55j_post (2004/11/10)
  o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
    affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
  o add consistent build directories and .cvsignore files to verification
-Line 2474 
 o make all subroutines 30 or less charac
+Line 8699 
 o make all subroutines 30 or less charac
  o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
    affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
- checkpoint55i_post
+ checkpoint55i_post (2004/10/28)
  o change arrays for total vertical diffusivity (2.D if explicit,
 .D if implicit) ; each ptracer uses its own background value.
  o added mnc/NetCDF output capability to ocn_compon_interf
-Line 2489 
 o give MNC the ability to create additio
+Line 8714 
 o give MNC the ability to create additio
  o Compute the non-local term using either KPP vertical diffusivity (=default)
     or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
- checkpoint55h_post
+ checkpoint55h_post (2004/10/20)
  o add verification test "vermix"
  o remove all the *_ioinc flags and replace with the single global
    outputTypesInclusive flag
-Line 2497 
 o allow to set a vertical profile of ver
+Line 8722 
 o allow to set a vertical profile of ver
  o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
  o useMNC moved from data.mnc to data.pkg
- checkpoint55g_post
+ checkpoint55g_post (2004/10/14)
  o Renaming carbon AD experiments to comply with testreport conventions
  o Updating adjoint of Held-Suarez hs94.1x64x5
  o Fixing directives for non-ECCO forward_step, after ECCO directives
-Line 2507 
 o Fixing directives for non-ECCO forward
+Line 8732 
 o Fixing directives for non-ECCO forward
  o Updating adjoint output for natl_box_adjoint after
    pkg/ecco has been modified (see taga c55d_post)
- checkpoint55f_post
+ checkpoint55f_post (2004/10/13)
  o rename to timeave_init_fixed
- checkpoint55e_post
+ checkpoint55e_post (2004/10/13)
  o some delicate re-shuffle of store directives to avoid one
    extra call of do_oceanic_physics
    affects ecco_the_main_loop.F, do_oceanic_physics.F
-Line 2518 
 o some delicate re-shuffle of store dire
+Line 8743 
 o some delicate re-shuffle of store dire
  o NB: this may break global_ocean adjoint temporarily,
    but it is clear how to fix it. Will do later, need this now.
- checkpoint55d_post
+ checkpoint55d_post (2004/10/11)
  o ECCO specific cost function terms (up-to-date with 1x1 runs)
  o ecco_cost_weights is modified to 1x1 runs
  o modifs to allow observations to be read in as
    single file or yearly files
  o enable to read exf forcing fields as either
    single file or yearly files (flag useExfYearlyFields)
- checkpoint55d_pre
+ checkpoint55d_pre (2004/10/08)
  o switch between 2-level and 3-level checkpointing
  o add ability of MNC to write local and "partial" (eg. 2D slices where
-Line 2573 
 o more obcs stuff
+Line 8798 
 o more obcs stuff
    - changed argument list of OBCS_CALC to myTime+deltaTclock
    - fixed about 35 bugs in obcs_external_fields_load
- checkpoint55c_post
+ checkpoint55c_post (2004/09/23)
  o obcs stuff
    - new runtime flags useOBCSprescribe, useOBCSbalance
    - re-arranged obcs_calc
-Line 2587 
 o obcs stuff
+Line 8812 
 o obcs stuff
  o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
    which simplifies the calls and passes the ifc check-bounds test
- checkpoint55b_post
+ checkpoint55b_post (2004/09/22)
  o add a 2D scalar, Z location, exchange_2 routine.
  o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
    to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
-Line 2598 
 o use a more standard discretization for
+Line 8823 
 o use a more standard discretization for
  o fix gad_advection.F (CubedSphere part), back to version 1.23
  o fix bug in mom_vi_del2uv.F (CubedSphere part).
- checkpoint55a_post
+ checkpoint55a_post (2004/09/20)
  o merged code to
    * prescribe/read time-dependent open boundaries
      (works in conjunction with exf, cal)
-Line 2606 
 o merged code to
+Line 8831 
 o merged code to
    * each boundary N/S/E/W now has its own CPP option
      (healthy for the adjoint)
- checkpoint55
+ checkpoint55 (2004/09/17)
  o up-to-date adjoint of previous breaks
    - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
    - global_ocean_ebm: adjoint still needs fix (TLM ok)
-Line 2616 
 o up-to-date adjoint of previous breaks
+Line 8841 
 o up-to-date adjoint of previous breaks
  o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
    (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
- checkpoint54f_post
+ checkpoint54f_post (2004/09/16)
  o in verification/carbin/ remove experiment related to
    ALLOW_PASSIVE_TRACER (array tr1 etc)
    code_ad/ input_ad/ results_ad
-Line 2642 
 o overhaul of IO so that we now have fla
+Line 8867 
 o overhaul of IO so that we now have fla
    - numerous small formatting cleanups for ProTeX
  o add version info (via BUILD_INFO.h) to MNC and stdout
- checkpoint54e_post
+ checkpoint54e_post (2004/09/02)
  o add two new packages
    - pp81 (Packanowski and Philander, 1981), Richardson number and
      stratification dependent mixing
-Line 2656 
 o add "verification/dic_example" which c
+Line 8881 
 o add "verification/dic_example" which c
  o genmake2: add ability to search for C compilers and cleanup test output
    - fixes recent SX-6 problems and should help with others (eg. HP-UX)
- checkpoint54d_post
+ checkpoint54d_post (2004/07/27)
  o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
  o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
    leading to additional shift by 5 days each year of integration
-Line 2672 
 o fix a bug in Flux deriv. vs Ts (pkg/ai
+Line 8897 
 o fix a bug in Flux deriv. vs Ts (pkg/ai
  o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
  o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
- checkpoint54c_post
+ checkpoint54c_post (2004/07/18)
  o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
    this affects (truncation error) output.txt of test-exp:
     global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
-Line 2683 
 o define the max number of passive trace
+Line 8908 
 o define the max number of passive trace
  o start to test mnc routinely in exp0
  o add sea-ice loading (sIceLoad) as a new forcing field.
- checkpoint54b_post
+ checkpoint54b_post (2004/07/08)
  o add testreport "-j JOBS" option for parallel builds (tested and pretty
     impressive on Altix and Opteron systems)
  o diagnostics can now write NetCDF files through the mnc package
-Line 2693 
 o staggerTimeStep & NLFS: rescale T & S
+Line 8918 
 o staggerTimeStep & NLFS: rescale T & S
    affects (truncation error) output of lab_sea & natl_box exp.: updated
  o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
- checkpoint54a_post
+ checkpoint54a_post (2004/07/06)
  o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
  o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
  o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
  o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
    + internal_wave (shift in writing cg2d_ini_res)
- checkpoint54a_pre
+ checkpoint54a_pre (2004/07/05)
  o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
    - modified verification/lab_sea and natl_box_adjoint accordingly
- checkpoint54
+ checkpoint54 (2004/07/02)
- checkpoint53g_post
+ checkpoint53g_post (2004/07/02)
  o prepare splitting of thermodynamics: store convect.counter in common block
  o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
    output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
-Line 2714 
 o new parameter "nShapS": allow to treat
+Line 8939 
 o new parameter "nShapS": allow to treat
  o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
  o restore adjointability
- checkpoint53f_post
+ checkpoint53f_post (2004/06/25)
  o modifications that affect AIM experiment results (update output.txt):
    - no advection of S at top interface Nr (pkg/generic_advdiff)
    - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
-Line 2727 
 o merged cylindrical coord configuration
+Line 8952 
 o merged cylindrical coord configuration
  o added rotating_tank experiment
  checkpoint53e_pre
- checkpoint53d_post
+ checkpoint53d_post (2004/06/14)
  o faulks upgraded: re-generate output.txt that have changed:
     global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
  o Added Bryan and Lewis, 1979, vertical diffusivity profile
-Line 2746 
 o regenerated output for global_ocean_eb
+Line 8971 
 o regenerated output for global_ocean_eb
  o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
    of mom_common/
    - simple re-arrangement of instructions within computing loop
- checkpoint53d_pre
+ checkpoint53d_pre (2004/05/21)
- checkpoint53c_post
+ checkpoint53c_post (2004/05/21)
  o new version of coupler for AIM+thSIce and Ocean models
   - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
   - land: change Evaporation of snow
-Line 2765 
 o Adjoint of EBM package + verification
+Line 8990 
 o Adjoint of EBM package + verification
    * TLM OK
    * ADM not sufficient accuracy yet (needs further testing)
- checkpoint53b_post
+ checkpoint53b_post (2004/05/14)
  o Commiting new energy balance model to repository
    * package is pkg/ebm
    * verif. is verification/global_ocean_ebm
-Line 2783 
 C        Destabilization of the thermoha
+Line 9008 
 C        Destabilization of the thermoha
  C        by atmospheric eddy transports.
  C        J. Climate 7(12), 1870-1882
  o Will need long integration testing.
- checkpoint53b_pre
+ checkpoint53b_pre (2004/05/14)
  o created pkg/mom_common in preparation for variable viscosity code
  o renamed and split ini_mnc_io
-Line 2791 
 o pkg/land: only liquid water can diffus
+Line 9016 
 o pkg/land: only liquid water can diffus
  o AIM using land: soil wetness availability account for snow
  o added printMapIncludesZeros to EEPARMS namelist
- checkpoint53a_post
+ checkpoint53a_post (2004/05/11)
  o restore TAMC compatiility for exf_constants.h
    (no usage of _d in .h)
  o Additional storing in KPP in an attempt to fix
-Line 2804 
 o Fixed verification/natl_box_adjoint ex
+Line 9029 
 o Fixed verification/natl_box_adjoint ex
    and hence gives results closer to that of Experiment 2.
    Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
- checkpoint53
+ checkpoint53 (2004/05/06)
  o stable checkpoint with up to date adjoint
    TLM tests only run for 1st grdchk at the moment. Its unclear if
    this is a code problem or a problem with resetting code for g_
-Line 2814 
 o stable checkpoint with up to date adjo
+Line 9039 
 o stable checkpoint with up to date adjo
     o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
       are both still in chaos following their security messes.
- checkpoint52n_post
+ checkpoint52n_post (2004/05/06)
  o various build (mostly genmake2) changes including:
    - ability to build/run more easily within Cygwin and MacOS X
    - more complicated Makefiles with a stronger dependence on Gnu Make
-Line 2845 
 o fix in pkg/thsice:
+Line 9070 
 o fix in pkg/thsice:
    - maintain snow precipitation unchanged (even if Tsf >=0).
   both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
- checkpoint52m_post
+ checkpoint52m_post (2004/04/18)
  o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
    this does not change any of the results, because myIter=0 in swfrac always
    lead to jwtype=2 (the default anyway), but the call makes little sense
-Line 2877 
 o test exp. advect_cs: use the standard
+Line 9102 
 o test exp. advect_cs: use the standard
  o Added functionality to grdchk:
    pick global i,j,k position (or nearest wet) where to perform check.
- checkpoint52l_post
+ checkpoint52l_post (2004/03/11)
  o new land formulation:
    a) use ground enthalpy as prognostic variable to ensure exact
       energy conservation.
-Line 2888 
 o aim_v23 modification for new land mode
+Line 9113 
 o aim_v23 modification for new land mode
    a) Treat separately land / ocean / sea-ice surface fluxes
       to allow implicit computation of land & sea-ice surface temp.
    b) add snow precipitation.
- checkpoint52l_pre
+ checkpoint52l_pre (2004/03/11)
  o fix problem (when 1 tile is empty) in min/max monitor.
  o fix bug in timeAve (u,vZetatave in common block)
-Line 2901 
 o fix ini_curvilinear_grid ; test CS exp
+Line 9126 
 o fix ini_curvilinear_grid ; test CS exp
  o aim.5l_cs: modify sea-ice fraction input file ; update output
  o exf: Adding simple range check routine for exf fields after read
- checkpoint52k_post
+ checkpoint52k_post (2004/02/23)
  o removed top-level directory "diags"
    - we migrated these functions to pkg/timeave a long time ago
  o fixed bug introduced in pkg/monitor
-Line 2914 
 o set all ...Freq to zero after cost_fin
+Line 9139 
 o set all ...Freq to zero after cost_fin
    taveFreq, dumpFreq, pChkptFreq
  o MAIN and ECCO differentiability restored
- checkpoint52j_post
+ checkpoint52j_post (2004/02/18)
  o fix nchklev in tamc.h for global_ocean...
  o Bringing flow and store directives up-to-date
  o Really weird thing!
-Line 2922 
 o Really weird thing!
+Line 9147 
 o Really weird thing!
    starttime, niter0, instead of mytime, myiter, screws up the adjoint:
    TAF places a faulty re-call of initialise_varia
    after cost_final call which should not be there!
- checkpoint52j_pre
+ checkpoint52j_pre (2004/02/03)
  o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
    error messages
-Line 2939 
 o merged mom_vi_calc_relvort3.F, mom_vi_
+Line 9164 
 o merged mom_vi_calc_relvort3.F, mom_vi_
    mon_vort3.F to make exch2 friendly with >1 tile per cube face
  o limit timeave output for hi-res integrations
- checkpoint52i_post
+ checkpoint52i_post (2004/01/21)
  o removed CPP_EEOPTIONS.h from verification/*/code
  o updated the tiling for global_ocean_pressure
- checkpoint52i_pre
+ checkpoint52i_pre (2004/01/20)
  o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
    the old pkg/aim).
- checkpoint52h_pre
+ checkpoint52h_pre (2004/01/20)
  o shortened offending lines in exch2_send_rx?.template
  o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
  o genmake2: add build & execute test for NetCDF code
-Line 2958 
 o added temporary hack for sea-ice dynam
+Line 9183 
 o added temporary hack for sea-ice dynam
    metric terms are ignored and it is assumed that
    there is no sea-ice on cube faces 1, 2, 4, and 5.
- checkpoint52f_post
+ checkpoint52f_post (2004/01/09)
  o added exch2 cube routines to pkg/exch2
  o modified hs94.cs-32x32x5 to use it
  o added new grid files to hs94.cs-32x32x5
- checkpoint52f_pre
+ checkpoint52f_pre (2004/01/07)
- checkpoint52e_post
+ checkpoint52e_post (2004/01/07)
  o first attempt to solve vertical advection (momemtum & T,S) Implicitly
    for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
  o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
-Line 2972 
 o step.1 : rewrite (as in MultiDimAdvec)
+Line 9197 
 o step.1 : rewrite (as in MultiDimAdvec)
  o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
  o update output (gad_calc_rhs.F changes affect truncation error) of exp:
   front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
- checkpoint52e_pre
+ checkpoint52e_pre (2004/01/02)
  o fix bug in impldiff when Nr=1 or Nr=2.
  o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
-Line 2983 
 o added exf_offset_atemp for Celsius to
+Line 9208 
 o added exf_offset_atemp for Celsius to
  o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
  o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
- checkpoint52d_post
+ checkpoint52d_post (2003/12/16)
  o re-tiled many expts to allow comparison in multi-processor mode
    - updated output accordingly
    - changed hs94.128x64x5 to use intial T from file rather than use the
-Line 3012 
 o check-in the first version of the coup
+Line 9237 
 o check-in the first version of the coup
  o new verification experiment, cpl_aim+ocn:
     coupled ocean - AIM atmosphere on cs32 grid.
- checkpoint52d_pre
+ checkpoint52d_pre (2003/12/06)
  o surface flux time-av diagnostic modified for NLFS & RealFreshWater
  o add call to AIM pendant S/R in external_forcing & external_fields_load.F
- checkpoint52c_post
+ checkpoint52c_post (2003/11/25)
  o Fixing OPTIONS files for use of exf:
    - ALLOW_ECCO not needed
    - ECCO_CPPOPTIONS.h should not be included from
-Line 3030 
 o Removed all CPP options for cal packag
+Line 9255 
 o Removed all CPP options for cal packag
  o modified STOREs in GAD_ADVECTION
  o corrected key comp. for passkey
- checkpoint52b_post
+ checkpoint52b_post (2003/11/23)
  o new version: "thsice" of thermodynamic sea-ice pkg:
   - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
   - modify fluxes but do not change theta directly;
-Line 3038 
 o new version: "thsice" of thermodynamic
+Line 9263 
 o new version: "thsice" of thermodynamic
   - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
     + output_thsice.txt to test thsice & bulk_force pkgs.
  o put back grid & coriolis monitor output.
- checkpoint52b_pre
+ checkpoint52b_pre (2003/11/23)
  o call "do_the_model_io" at the beginning (=> dump initial state)
  o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
-Line 3048 
 o missing PTRACERS headers in some routi
+Line 9273 
 o missing PTRACERS headers in some routi
  o default tamc.h in pkg/autodiff supposed to crash
    to ensure proper customization
- checkpoint52a_post
+ checkpoint52a_post (2003/11/17)
  o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
    - moved surfaceTendencyTice from pkg/seaice to main code
    - subroutine FREEZE_SURFACE now limits only surface temperature
-Line 3063 
 o fix problem with ECCO-related divided
+Line 9288 
 o fix problem with ECCO-related divided
    snapshot file was missing some ad-variables,
    but no warning issued by TAF
- checkpoint52a_pre
+ checkpoint52a_pre (2003/11/12)
  o some bug fixes for #undef REAL4_IS_SLOW
  checkpoint52 = ecco_c52_e35
  o after testing adjoints of checkpoint51u_post
- checkpoint51u_post
+ checkpoint51u_post (2003/11/06)
  o this is the post-merge tag of the ecco-branch
    (needs another clean checkout and re-testing)
  o various natl_box_adjoint configs and results
-Line 3084 
 o top level routines the_main_loop, forw
+Line 9309 
 o top level routines the_main_loop, forw
    (new namelist ecco_cost_nml)
  o in ctrl/ cleaned some cross-dependencies and updated CPP options
- checkpoint51t_post
+ checkpoint51t_post (2003/11/04)
  o this is the pre-merge tag of the ecco-branch
- checkpoint51s_post
+ checkpoint51s_post (2003/11/04)
  o cleanup: removed various obsolete #define-s
  o pkg/grdchk
    - renamed 'ph-grd 3' to 'grad-res'
-Line 3096 
 o pkg/grdchk
+Line 9321 
 o pkg/grdchk
    - additional high-precision output for testreport
      (grep for 'precision_grdchk_result')
- checkpoint51r_post
+ checkpoint51r_post (2003/11/03)
  o cleaned up or removed CPP_OPTIONS.h files
  o updated results for some of the tests to reflect the new
    optfiles (-ieee: -O0 instead of -O3)
- checkpoint51q_post
+ checkpoint51q_post (2003/10/30)
  o cd_code:
    - moved cd_scheme.F -> cd_code_scheme.F
    - separate read_checkpoint from cd_code_ini_vars.F
-Line 3117 
 o ctrl package totally restructured
+Line 9342 
 o ctrl package totally restructured
    - confined inclusion of AD_CONFIG.h to where necessary.
  o genmake2: changed AD dependencies from SRCFILES to AD_FILES
- checkpoint51p_post
+ checkpoint51p_post (2003/10/30)
  o create initial cd_code package
    - WARNING: the initialization of fields within packages
      is broken because INI_FIELDS (where READ_CHECKPOINT is
-Line 3132 
 o create initial cd_code package
+Line 9357 
 o create initial cd_code package
  o cleanup verification/*/code/GMREDI_OPTIONS.h
  o cleanup testreport
- checkpoint51o_post
+ checkpoint51o_post (2003/10/27)
  o bringing AD-related verif's up to date with genmake2
    - carbon/
    - global_ocean.90x40x15/
-Line 3153 
 o Correcting initialisations for fVerU,
+Line 9378 
 o Correcting initialisations for fVerU,
  o helping TAF to recognize dependency on kUp for
    fVerU, fVerV
  o Replacing delZ by delR in pkg/ctrl/
- checkpoint51o_pre
+ checkpoint51o_pre (2003/10/24)
  o undid all of cp51 pending some cleanups and discussion
  o added the [#include "AD_CONFIG.h"] statement to all files that need
-Line 3161 
 o added the [#include "AD_CONFIG.h"] sta
+Line 9386 
 o added the [#include "AD_CONFIG.h"] sta
   o re-worked the build logic in genmake2 to support AD_CONFIG.h
   o removed tools/genmake since it no longer works
- checkpoint51n_post
+ checkpoint51n_post (2003/10/23)
  o modifications to make FREEZE flux visible to pkg/kpp
    - moved surfaceTendencyTice from pkg/seaice to main code
    - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
-Line 3170 
 o modifications to make FREEZE flux visi
+Line 9395 
 o modifications to make FREEZE flux visi
       global_ocean.cs32x15, and global_with_exf)
  o added surface flux output variables to TIMEAVE_STATVARS
- checkpoint51n_pre
+ checkpoint51n_pre (2003/10/23)
  o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
  o added [#include "AD_CONFIG.h"] to all files that use the following
    defines:
-Line 3178 
 o added [#include "AD_CONFIG.h"] to all
+Line 9403 
 o added [#include "AD_CONFIG.h"] to all
    - ALLOW_TANGENTLINEAR_RUN
    - ALLOW_ECCO_OPTIMIZATION
- checkpoint51m_post
+ checkpoint51m_post (2003/10/21)
  o incorporating changes to get TAMC/TAF working in genmake2
    - added new TAMC/TAF targets to the Makefile
    - various cleanups related to package handling
    - these changes should have no impact on the forward model
- checkpoint51l_post
+ checkpoint51l_post (2003/10/20)
  o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
   - faster algorithm for cal_addtime.F
   - higher precision arithmetic, where needed
   - pkg/exf *startdate variables changed from calendar date to
     model integration time
- checkpoint51l_pre
+ checkpoint51l_pre (2003/10/17)
  o add salt flux to forcing fields (used when salty sea-ice forms or melts)
  o enable to apply restoring on S & T only in a latitude band.
  o update output (external_forcing_surf modif. change truncation errors)
     global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
- checkpoint51k_post
+ checkpoint51k_post (2003/10/16)
  o change default to: useNHMTerms=.FALSE.
   - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
     adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
-Line 3211 
 o added an include barrier to the defaul
+Line 9436 
 o added an include barrier to the defaul
    removed the #include "PACKAGES_CONFIG.h" from it
  o fix a bug in mom_fluxform (from chk51j_post)
- checkpoint51j_post
+ checkpoint51j_post (2003/10/10)
  o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
  o adjusted some flow directives (dynamics, thermodynamics)
  o added cubed-sphere case to test cost function
-Line 3225 
 o Moving pkg-specific flow directives to
+Line 9450 
 o Moving pkg-specific flow directives to
         - pkg_ad_diff.list
         - pkg_ad_check_lev?_dir.h
- checkpoint51i_post
+ checkpoint51i_post (2003/10/09)
  o merge of the branch-genmake2
    - knowingly breaks the older genmake
    - automatic generation of all ALLOW_${PKG_NAME} defines
    - new testreport supersedes older testscript
  o large number of package inclusion and header cleanups
- checkpoint51i_pre
+ checkpoint51i_pre (2003/10/08)
  o new output for adjoin of global ocean vector invariant
  o fix for checkpoint of thermodynamic seaice and bulk_force
-Line 3243 
 o modify gchem pkg to be more versatile
+Line 9468 
 o modify gchem pkg to be more versatile
  o modifications to clean up dic pkg
  o add pkg/cfc
- checkpoint51g_post
+ checkpoint51g_post (2003/10/02)
  o provide links for ARPACK and ADM*TLM
  o start removing verification/vero/
  o update AD-related stuff
-Line 3251 
 o update AD-related stuff
+Line 9476 
 o update AD-related stuff
  o adding to verification/global_ocean.90x40x15/ adjoint of
    vector invariant setup
- checkpoint51f_post
+ checkpoint51f_post (2003/10/02)
  o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
  o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
    of tracer Green's fucntions for ocean inversion project.
- checkpoint51f_pre
+ checkpoint51f_pre (2003/08/07)
  o Added on-the-fly spatial interpolation capability
      "USE_EXF_INTERPOLATION" to pkg/exf.
    - This is a temporary Cartesian-grid hack until
-Line 3268 
 o Bug fix to pkg/ptracers, pkg/generic_a
+Line 9493 
 o Bug fix to pkg/ptracers, pkg/generic_a
      and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
      non-local transport term.
- checkpoint51e_post
+ checkpoint51e_post (2003/08/03)
  o pkg/mom_vecinv:
    - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
    - add time-ave diagnostic of vorticity advection.
-Line 3278 
 o atmospheric geopotential: - include wa
+Line 9503 
 o atmospheric geopotential: - include wa
  o land pkg: read initial state from files.
  o AIM : add stratospheric drag in the upper level
- checkpoint51d_post
+ checkpoint51d_post (2003/07/18)
  o change function ILNBLNK (=> last non-blank char.) to return zero
    (instead of the string length) when the string. char is empty
  o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
-Line 3291 
 o Use cluster local disks for purely loc
+Line 9516 
 o Use cluster local disks for purely loc
    - new active_file_loc... and mdsio_..._loc routines
    - affected packages: autodiff, ctrl, grdchk, mdsio
- checkpoint51c_post
+ checkpoint51c_post (2003/07/08)
  o introducing integer flag debugLevel
    - debLevZero: suppress all output
    - debLevA: standard
-Line 3314 
 o added verification for adjoint with pt
+Line 9539 
 o added verification for adjoint with pt
    - checked tapelev/comlev recomputations: OK
  <<<checkpoint51b_pre
- checkpoint51a_post
+ checkpoint51a_post (2003/06/25)
  o added code for biogeochemistry package
    - new pkgs: dic, gchem
    - new subroutine in ptracers
  o modify code for biogeo packages
    - in model/src and pkg/ptracers
- checkpoint51
+ checkpoint51 (2003/06/24)
  o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
    - autodiff, ctrl, exf, grdchk, seaice
    kept separate packages
-Line 3329 
 o merged improved packages from ecco-bra
+Line 9554 
 o merged improved packages from ecco-bra
  o updating verification/internal_wave, verification/lab_sea
    (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
- checkpoint50i_post
+ checkpoint50i_post (2003/06/23)
  o Preparing next differentiable checkpoint and sync
    of MAIN vs. ecco-branch
    - 1st step: this one is differentiable
    - 2nd step: next(! not this) checkpoint will have updated packages
                from ecco-branch)
- checkpoint50h_post
+ checkpoint50h_post (2003/06/20)
  o new package "land": provide surface BC for AIM.
  o pkg/ptracers: apply exchange to all tracers after reading a pickup.
  o AIM: use true log-P extrapolation for near surface temp (= as in
-Line 3345 
 o New variable in PARM03 for more flexib
+Line 9570 
 o New variable in PARM03 for more flexib
  o somewhat cleaned package initialisation sequence for
    ctrl/ cost/ ecco/ in packages_... routines
- checkpoint50g_post
+ checkpoint50g_post (2003/05/23)
  o merged with release1_p17 (pkg/seaice and verification/lab_sea)
    - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
    - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
      made the default because of faster convergence than ADI
- checkpoint50f_post
+ checkpoint50f_post (2003/05/23)
  o exf totally restructured
    - replaced all exf_set_ routines by one generic exf_set_gen.F
      and made sure it's still differentiable
-Line 3359 
 o exf totally restructured
+Line 9584 
 o exf totally restructured
    - exf_inscal_/exf_outscal_ suffixes consistent with field names
    - updated adjoint/makefile and relevant verif. accordingly
- checkpoint50f_pre
+ checkpoint50f_pre (2003/05/23)
   o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
        + change Evap over land. (update aim.5l_cs output)
   o added missing .cvsignores and made uniform across expts
-Line 3369 
 checkpoint50f_pre
+Line 9594 
 checkpoint50f_pre
   o new fn in pkg/monitor to stop model if solution grows too big
   o removed lots of single quotes from comments
- checkpoint50e_post
+ checkpoint50e_post (2003/05/14)
  o make KPP work with PTRACERS
   - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
     nearly a copy of kpp_transport_s
   - there is no analogue to SurfaceTendencyS, so I have to use
     gPtr(of the surface layer) instead
  o add a new platform SunFire+mpi (SunFire 15000) to genmake
- checkpoint50e_pre
+ checkpoint50e_pre (2003/05/13)
- checkpoint50d_post
+ checkpoint50d_post (2003/05/13)
  o change kpp output from multiple-record state files to single-record state
    files analogous to write_state.F
  o reduce the output frequency of cg3d-related stuff to the monitor frequency,
    analogous to the cg2d-related output.
  o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
    so that writing to internal file fn (with length 512) fails.
- checkpoint50d_pre
+ checkpoint50d_pre (2003/05/12)
- checkpoint50c_post
+ checkpoint50c_post (2003/05/12)
  o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
  o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
  o add time-average diagnostic of U*V and vertical diffusive flux for theta.
  o bug fixed in convective adjustment diagnostic (multi-tile set-up).
  o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
- checkpoint50c_pre
+ checkpoint50c_pre (2003/04/30)
  Merging from release1_p13:
  o bug fix for pkg/seaice dynamic solver
  o Added SEAICE_initialHEFF to pkg/seaice
- checkpoint50b_post
+ checkpoint50b_post (2003/04/17)
  o store u*,v* in gU,V instead of in guNm1,gvNm1
  o in order to put the momForcing out of the Adams-Bashforth:
    move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
-Line 3408 
 o new flag "useCDscheme" (default=F); re
+Line 9633 
 o new flag "useCDscheme" (default=F); re
  o re-generate output for highly sensitive test-exp:
     global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
- checkpoint50b_pre
+ checkpoint50b_pre (2003/04/17)
  o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
  o corrected CPP option mismatch in exf_Bulk... functions for case
    #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
- checkpoint50a_post
+ checkpoint50a_post (2003/03/21)
  o Bug fix for merging between c50 and KPP.
    ikey was passed from thermodynamics to kpp_calc via
    common block rather than being recomputed in kpp_calc,
    in contradiction with new key itdkey.
    New key ikppkey created, and tamc.h headers updated.
- checkpoint50
+ checkpoint50 (2003/03/08)
  - 2nd step of merge with ecco-branch:
    merge changes in ecco-branch back into main trunk
  - bug fix in find_alpha
-Line 3428 
 checkpoint50
+Line 9653 
 checkpoint50
  - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
  - merged some sliced AD support routines
- checkpoint49
+ checkpoint49 (2003/03/06)
  merged from ecco-branch:
  o exf:
    - Enable initialisation of forcing fields to constant
-Line 3466 
 o DIVA:
+Line 9691 
 o DIVA:
    (see MITgcm manual).
  o cal: synchronized between MAIN and ecco-branch
- checkpoint48i_post
+ checkpoint48i_post (2003/03/05)
  o Changes to restore differentiability of code w.r.t. previous tag
    (mostly adding new routines to make list and replacing
    pressure by totPhiHyd).
-Line 3484 
 o Modif. for DIVA:
+Line 9709 
 o Modif. for DIVA:
    tbar, sbar, psbar, which should not be reinitialised;
    only relevant for ecco-branch)
- checkpoint48h_post
+ checkpoint48h_post (2003/02/28)
  o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
  o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
  o Added SEAICE_initialHEFF to pkg/seaice
  o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
- checkpoint48g_post
+ checkpoint48g_post (2003/02/18)
  --- EOS:
  o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
    store total Potential in totPhyHyd for diagnostics & EOS.
-Line 3504 
 o accurate phiHyd when using interface-W
+Line 9729 
 o accurate phiHyd when using interface-W
   ( changes results of ideal_2D_oce )
  o includes r* 2nd term in potential gradient.
- checkpoint48f_post
+ checkpoint48f_post (2003/02/18)
  Merging from release1_p12:
  o Modifications for using pkg/exf with pkg/seaice
    - improved description of the various forcing configurations
-Line 3532 
 o pkg/seaice:
+Line 9757 
 o pkg/seaice:
    - adjoint-friendly modifications
    - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
- checkpoint48e_post
+ checkpoint48e_post (2003/02/12)
  o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
  o dynamics: change definition of computational domain & adapt mom_fluxform
    accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
-Line 3543 
 o following exp works with Olx=Oly=2 (an
+Line 9768 
 o following exp works with Olx=Oly=2 (an
      inverted_barometer solid-body.cs-32x32x1
    (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
- checkpoint48d_post
+ checkpoint48d_post (2003/02/09)
  o in preparation for r*:
   a) use pre-computed gradient of hydrostatic potential:
      changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
-Line 3551 
 o in preparation for r*:
+Line 9776 
 o in preparation for r*:
      => affects results of glob_oce_pressure (different truncation error)
    update output.txt of ideal_2D_oce & global_ocean_pressure
- checkpoint48d_pre
+ checkpoint48d_pre (2003/02/08)
  o in preparation for r*:
    new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
    pass the 2 comp. of the grad. as arguments to momentum S/R.
    but for the moment, only used if it does not change the results.
  o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
- checkpoint48c_post
+ checkpoint48c_post (2003/02/06)
  Modifications in treatment of initial flux forcing controls
  to avoid extra storing of flux fields.
- checkpoint48c_pre
+ checkpoint48c_pre (2003/01/21)
  o Added tidal_basin_2d experiment (currently 1D!)
  o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
- checkpoint48b_post
+ checkpoint48b_post (2003/01/27)
  o r* coordinate added in #ifdef NONLIN_FRSURF block.
   (modification to pressure gradient not yet implemented)
  o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
    (for U & V) that are used for vertical advection of momentum.
- checkpoint48a_post
+ checkpoint48a_post (2003/01/24)
  o In preparation for r*, use temp. array to compute vertical transport
     in flux-form momentum pkg. => change results of few test-exp.
    Update output of: exp4, exp5, front_relax, global_ocean_pressure,
                      lab_sea, natl_box & plume_on_slope
- checkpoint48
+ checkpoint48 (2003/01/23)
  o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
- checkpoint47j_post
+ checkpoint47j_post (2003/01/21)
  o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
  o moved adexch from forward_step to addummy_in_stepping
  o added exch in ctrl_map_...
-Line 3600 
 o Yet more changes in gmredi:
+Line 9825 
 o Yet more changes in gmredi:
      re-activated full calculation of taperfct for case 'ac02'
  o updating verification/ adjoints of carbon, global_ocean.90x40x15
- checkpoint47i_post
+ checkpoint47i_post (2003/01/13)
  o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
  o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
    default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
-Line 3616 
 o case GM_BOLUS_ADVEC should be cleaned
+Line 9841 
 o case GM_BOLUS_ADVEC should be cleaned
    S/R gmredi_slope_psi should be cleaned
  o verification/carbon now has exactConserv=.TRUE.
- checkpoint47g_post
+ checkpoint47g_post (2003/01/10)
  o time-average AIM output: becomes independent from statvars time-average
    (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
  o After TAF bug fix:
-Line 3642 
 Gradient checks OK for
+Line 9867 
 Gradient checks OK for
  in conjunction with data.gmredi parameters to be checked in
  in a few minutes under verification/carbon/code/
- checkpoint47f_post
+ checkpoint47f_post (2002/12/28)
  Merging from release1_p10:
  o modifications for using pkg/exf with pkg/seaice
    - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
-Line 3654 
 o modifications for using pkg/exf with p
+Line 9879 
 o modifications for using pkg/exf with p
    - verification/lab_sea default experiment now uses
      pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
- checkpoint47e_post
+ checkpoint47e_post (2002/12/27)
  o created a tag prior to creating a branch
- checkpoint47d_post
+ checkpoint47d_post (2002/12/16)
  o fixed bug in the oceanic pressure coordinates code: vertical viscosity
    at the bottom boundary had an erroneous half slip boundary condition
  o added bottom drag and no slip boundary condition capabilities to
    oceanic pressure coordinates code
  o added new verification experiment global_ocean_pressure, this experiment is
    also described in the tutorial section of the manual
- checkpoint47d_pre
+ checkpoint47d_pre (2002/12/16)
- checkpoint47c_post
+ checkpoint47c_post (2002/12/16)
  o Added a verification experiment for a global cubed-sphere ocean run
    -  verification/global_ocean.cubed32x32x30
    -  uses pkg/therm_seaice and pkg/bulk_forcing
-Line 3678 
 o OCEANICP & realFreshWater: include P-E
+Line 9903 
 o OCEANICP & realFreshWater: include P-E
    NOTES: requires option NONLIN_FRSURF to be "#define".
  o update advect_xz/results/output.txt (left from checkpoint44g_post)
- checkpoint47b_post
+ checkpoint47b_post (2002/12/05)
  Merging from release1_p9:
  o pkg/seaice
    - removed GOTO's and added taf directives
-Line 3695 
 o verification/lab_sea
+Line 9920 
 o verification/lab_sea
    - added missing matlab routines
    - added test of thermodynamics parallelization
- checkpoint47a_post
+ checkpoint47a_post (2002/11/23)
  o new pkg: aim_v23
   = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
     for now, keep the same surface forcing as before.
-Line 3712 
 o bulk_force and therm_seaice
+Line 9937 
 o bulk_force and therm_seaice
  - Two ifdef statements for compile time,
     ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
- checkpoint47
+ checkpoint47 (2002/11/15)
  differentiable version of checkpoint46n_post
  o bug fix in quasihydrostaticterms
  o * "clean" adjoint code (in terms of extensive recomputations)
-Line 3741 
 o Updated verification/carbon/
+Line 9966 
 o Updated verification/carbon/
    - #define GM_VISBECK_VARIABLE_K
    - GM_taper_scheme    = 'ldd97'
- checkpoint46n_post
+ checkpoint46n_post (2002/11/12)
  Merging from release1_p8:
  o verification/natl_box:
    updating new external_fields_load routine
-Line 3795 
 o Adding new verification experiment glo
+Line 10020 
 o Adding new verification experiment glo
    the exf (and cal) package instead of the
    external_fields_load routine (cf README file).
- checkpoint46m_post
+ checkpoint46m_post (2002/11/07)
  o modified testscript to return -- when there are no lines of "%MON" output
  o added new flag "quasiHydrostatic" for QH mode
    and new routine quasihydrostaticterms()
-Line 3808 
 o introduced flag for controllin non-hyd
+Line 10033 
 o introduced flag for controllin non-hyd
  o removed gravitySign from PARM04
  o switched to g77/ifc from pgf77 in aim experiments
- checkpoint46l_post
+ checkpoint46l_post (2002/11/01)
  o made convective adjustment work with pressure coordinates:
   - changed the direction of k-loop in convective_adjustment.F for the
     case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
-Line 3821 
 o made convective adjustment work with p
+Line 10046 
 o made convective adjustment work with p
     at the beginning of find_rho, find_alpha, and find_beta, does a
     check of the entire slice, if CPP-option
     CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
- checkpoint46l_pre
+ checkpoint46l_pre (2002/10/23)
- checkpoint46k_post
+ checkpoint46k_post (2002/10/23)
  o fixed the verification/global_ocean.90x40x15 experiment:
   - new bathymetry (the world according to A., JMC, and M.)
   - new initial fields and forcing fields (*.bin files)
-Line 3837 
 o S/R aim_initialise.F replace S/R aim_i
+Line 10062 
 o S/R aim_initialise.F replace S/R aim_i
   - read AIM physics parameters from a file (data.aimphys)
   - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
- checkpoint46j_post
+ checkpoint46j_post (2002/10/07)
  o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
  o move wVel computation at the end of the time step, in S/R integr_continuity
  o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
  o update timeave pkg for wVel diagnostic.
- checkpoint46j_pre
+ checkpoint46j_pre (2002/09/27)
- checkpoint46i_post
+ checkpoint46i_post (2002/09/25)
  o Clean up AIM package (and keep the results unchanged):
    include CPP_OPTION and use IMPLICT NONE in all routines ;
    declare all the variables _RL ; use _d 0 for all numerical constants.
    use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
- checkpoint46h_post
+ checkpoint46h_post (2002/09/25)
  o cleaned up the use of rhoNil and rhoConst.
    - rhoNil should only appear in the LINEAR equation of state, everywhere
      else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
-Line 3860 
 o introduced new parameter rhoConstFresh
+Line 10085 
 o introduced new parameter rhoConstFresh
    value is 999.8 kg/m^3
  o cleanup up external_forcing.F and external_forcing_surf.F
    - can now be used by both OCEANIC and OCEANICP
- checkpoint46h_pre
+ checkpoint46h_pre (2002/09/18)
   Added code to convert surface volume flux (fresh water) into
   a mass flux when using P coordinates in the ocean (OCEANICP).
   Note: It assumes you have set rho0=rhoConst=density of fresh water.
- checkpoint46g_post
+ checkpoint46g_post (2002/09/18)
  o Include a new diagnostic variable phiHydLow for the ocean model
    - in z-coordinates, it is the bottom pressure anomaly
    - in p-coordinates, it is the sea surface elevation
-Line 3884 
 o cleaned up find_rho
+Line 10109 
 o cleaned up find_rho
    - removed obsolete 'eqn' from the parameter list.
  o added two new verification experiments: gop and goz
    (4x4 degree global ocean, 15 layers in pressure and height coordinates)
- checkpoint46g_pre
+ checkpoint46g_pre (2002/09/16)
- checkpoint46f_post
+ checkpoint46f_post (2002/09/16)
  o Enable tangent linear (forward mode) gradient checks:
    - extended active file handling to g_... files
    - added TANGENT_SIMULATION to theSimulationMode
-Line 3894 
 o Enable tangent linear (forward mode) g
+Line 10119 
 o Enable tangent linear (forward mode) g
  o added tangent linear setup in verification/carbon/code_ftl
  o added adjoint setup in verification/front_relax/code_ad
- checkpoint46e_post
+ checkpoint46e_post (2002/09/05)
  o Added new equation of state -> MDJWF
    - EOS of McDougall et al., 2002, JAOT, submitted
    - caveat: the equation of state is only valid for a smaller (more
-Line 3903 
 o Added new equation of state -> MDJWF
+Line 10128 
 o Added new equation of state -> MDJWF
    - added more check values for density in check_eos (ini_eos.F), some of
      the old check values are out of the range of the MDJWF-eos, so don't
      expect perfect matches for those
- checkpoint46e_pre
+ checkpoint46e_pre (2002/08/19)
- checkpoint46d_post
+ checkpoint46d_post (2002/08/19)
  o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
    'OCEANICP', also initialised field pressure correctly in ini_eos in the
    case of pressure coordinates. eosType='JMD95Z' in
    combination with buoyancyRelation='OCEANICP' now causes an error.
  o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
    in find_alpha/beta.
- checkpoint46d_pre
+ checkpoint46d_pre (2002/08/15)
  o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
    so that JMD95Z and JMD95P give approptiate static stability in find_rho.
- checkpoint46c_post
+ checkpoint46c_post (2002/08/15)
  o Changes necessary for ocean in p-coordinates
   -  Added new buoyancy relation = 'OCEANICP'
   -  Added new parameters = gravitySign (this used to be contained inside
      the factor dRdZ which I added when we first switched to R coordinates).
   X GM/Redi is not compatible (yet)
   X bottom drag and no-slip need to be debugged.
- checkpoint46c_pre
+ checkpoint46c_pre (2002/08/07)
- checkpoint46b_post
+ checkpoint46b_post (2002/08/07)
  o Added new equation of state -> JMD95Z and JMD95P
    - EOS of Jackett and McDougall, 1995, JAOT
    - moved all EOS parameters into EOS.h
-Line 3935 
 o Added UNESCO EOS, but not recommended
+Line 10160 
 o Added UNESCO EOS, but not recommended
    in-situ temperature (see JMD95)
  o Modified formatting for knudsen2.f in utils/knudsen2 and added
    unesco.f to be used with POLY3
- checkpoint46b_pre
+ checkpoint46b_pre (2002/07/31)
- checkpoint46a_post
+ checkpoint46a_post (2002/07/31)
  o Added (atmospheric) pressure loading
    - new field in FFIELDS.h, etc...
    - new cpp flag ATMOSPHERIC_LOADING
  o Changed hFacC to _hFacC in calc_phi_hyd.F
  o Added SHORTWAVE_HEATING to some files for consistency
- checkpoint46a_pre
+ checkpoint46a_pre (2002/07/13)
- checkpoint46
+ checkpoint46 (2002/07/13)
  further merges from release1_p5
  o new ctrl package
    - adopted from ECCO environment to enable optimization
-Line 3972 
 o added hooks for Eliassen Palm fluxes (
+Line 10197 
 o added hooks for Eliassen Palm fluxes (
  o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
  o incorporated hooks for sponge layer code (external_forcing.F)
- checkpoint45d_post
+ checkpoint45d_post (2002/07/12)
  o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
  o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
    (affects plume_on_slope "cg2d" output)
-Line 3986 
 o add new flags:
+Line 10211 
 o add new flags:
   - for each tracer, define internal flag for multiDimAdvection & A-B
  o monitor: change definition of KE to check conservation of Energy
- checkpoint45c_post
+ checkpoint45c_post (2002/05/30)
  o Removed f90 comments ("!")
  o Modified initialisations to enable exf package for MITgcm
    (without invoking ECCO_PACKAGE).
-Line 3994 
 o modifications to gradient check packag
+Line 10219 
 o modifications to gradient check packag
    - enable centered differences
    - modified format of standard output
- checkpoint45b_post
+ checkpoint45b_post (2002/05/30)
  o cleaned exchange calls in cg2d
  o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
  o included CPP option SINGLE_LAYER_MODE in thermodynamics
-Line 4006 
 o in initialise_varia, moved call packag
+Line 10231 
 o in initialise_varia, moved call packag
    (corresponding adjustment of TAF tape initialisation).
  o in calc_diffusivity/calc_viscosity extended domain to full overlap.
- checkpoint45a_post
+ checkpoint45a_post (2002/05/01)
  o compute Rho over the whole domain (extend iMin,jMin indices)
  o specific exchange for X-slice domain (case Ny=1)
  o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
-Line 4026 
 o errorMessageUnit set non-equal zero in
+Line 10251 
 o errorMessageUnit set non-equal zero in
    (conflict on some platforms, e.g. IBM SP3)
  o modified carbon verif.
- checkpoint44h_pre
+ checkpoint44h_pre (2002/03/14)
  o vertical grid option: allow to put the Interface at the middle between
 cell-centers ; replace delZ in pkg/kpp by drF.
  o GM Advective form: Tracers are advected using the residual transport (=
    Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
- checkpoint44g_post
+ checkpoint44g_post (2002/03/05)
  o fix surface correction term in multiDimAdvection (affects plume_on_slope
    results) ; ifdef missing in thermodynamics.F
-Line 4097 
 o merge of relevant stuff from the ecco-
+Line 10322 
 o merge of relevant stuff from the ecco-
  o check parameters & config (chkpt44a_pre,post)
  o OBC and NonLin_FrSurf.
- checkpoint44
+ checkpoint44 (2002/01/18)
  o fix bug in mom_vi_del2uv
  o select when filters are applied ; add options to zonal_filter (data.zonfilt)
  o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
-Line 4105 
 o update AIM experiments (NCEP input fil
+Line 10330 
 o update AIM experiments (NCEP input fil
  o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
  o added some stuff for AD
- checkpoint43
+ checkpoint43 (2001/09/28)
  o added two new advection tests
  o added global 4x4 degree ocean test
  o added test of H&S94 with free surface on cube
  o some final mods for gradient check, adjoint,...
- checkpoint42
+ checkpoint42 (2001/09/27)
    Fixed AD-related problems:
  o Store directives up-to-date with re-arranged Adams-Bashforth
    (mainly thermodynamics.F)
-Line 4123 
 o Modified store directives for split of
+Line 10348 
 o Modified store directives for split of
    for the case ALLOW_KPP
  o Cleaned argument list for timestep_tracer.F
- checkpoint41
+ checkpoint41 (2001/09/27)
  o re-formatted/added comments in prologues of key subroutines
    to work with protex
- checkpoint40
+ checkpoint40 (2001/09/27)
  o moved calc_gs, calc_gt and calc_tr1 back to model/src
  o added FLT (floats) package from Arne along with demo. experiment
  o re-arranged Adams-Bashforth scheme for tracers to allow easier
-Line 4136 
 o more mods for non-linear free-surface
+Line 10361 
 o more mods for non-linear free-surface
  o modified multi-dim method to work on cube
  o bug fix in KPP (from DM)
- checkpoint40pre9
+ checkpoint40pre9 (2001/09/27)
  o added DST advection schemes
  o fix MPI bug on SGI's
  o modifications for non-linear free-surface
-Line 4146 
 o changes to commenting of arguments for
+Line 10371 
 o changes to commenting of arguments for
  o added/updated many matlab scripts
  o added multi-dimensional advection method for tracers
- checkpoint40pre8
+ checkpoint40pre8 (2001/09/05)
  o new package rw/
    Added method for dumping intermediate local arrays:
    mdsio_writetile - same as mdsio_writefield except works from inside
-Line 4165 
 o TAMC-related update to cope with mom_f
+Line 10390 
 o TAMC-related update to cope with mom_f
    currently nothing implemented to switch this storing off
    in case fluxform is used since no CPP flag available).
- checkpoint40pre7
+ checkpoint40pre7 (2001/08/14)
  o bug fix in dynamics.F
    calc_viscosity called before k=1,Nr loop.
  o added some #ifdef's ALLOW_PASSIVE_TRACER
  o cleaned initialisations in ctrl_map_ini
    related to TAF
- checkpoint40pre6
+ checkpoint40pre6 (2001/08/13)
  o split dynamics into thermodynamics & dynamics
  o corresponding split of calc_diffusivity into
    calc_diffusivity, calc_viscosity
-Line 4180 
 o corresponding split of calc_diffusivit
+Line 10405 
 o corresponding split of calc_diffusivit
  o Added diffkr, kapgm to control variables
  o bug fix in gmredi_slope_limit for ldd97
- checkpoint40pre5
+ checkpoint40pre5 (2001/07/31)
  o proper initialization of Adams-Bashforth time stepping
    + uses forward step for very first step of model (iter=0)
  o re-generated *all* output since almost all output is modified by this
-Line 4194 
 o added new expt "solid-body.cs-32x32x1"
+Line 10419 
 o added new expt "solid-body.cs-32x32x1"
    + this uses an alternative form of ini_curvilinear_grid.F which
      is not necessarily any better than the current one...
- checkpoint40pre4
+ checkpoint40pre4 (2001/07/30)
  o added re-initialisations of utrans,vtrans,rtrans in
    calc_common_factors which are crucial for TAF.
  o extended iMin,jMin range for calc_common_factors,
-Line 4202 
 o extended iMin,jMin range for calc_comm
+Line 10427 
 o extended iMin,jMin range for calc_comm
  o added option ALLOW_PASSIVE_TRACER
  o a few minor updates and fixes
- checkpoint40pre3
+ checkpoint40pre3 (2001/07/13)
  o created calc_gtr1.F for gad package
  o split the_main_loop and re-introduced forward_step
  o some recomputations of nIter0 for TAMC
- checkpoint40pre2
+ checkpoint40pre2 (2001/07/13)
  o Updated to latest branch of AJA, JMC
  o Added gradient check package
  o Added routines for passive tracer handling
  o Added carbon sequestration sensitivity experiment
- checkpoint39
+ checkpoint39 (2001/05/14)
   o Modifications and fixes to support TAMC
     (mainly missing or wrong directives)
   o Corrected common blocks when fooling TAMC to produce adjoint I/O
-Line 4227 
 checkpoint39
+Line 10452 
 checkpoint39
           (NB: this is not the full ECCO environment)
   o disabled some packages by default in genmake
- checkpoint38
+ checkpoint38 (2001/04/10)
   o see notes_c37_adj.txt
   o corrected wrong layer index in external_forcing_t
   o replaced the_main_loop/forward_step by the_main_loop
-Line 4235 
 checkpoint38
+Line 10460 
 checkpoint38
     (replaced criteria for initial/final state)
   o added runtime flag for pre-C35 pickups: usePickupBeforeC35
- checkpoint37
+ checkpoint37 (2001/03/13)
   o mdsio.F routine split and packaged in pkg/mdsio
     (mdsio.F and mdsio_gl.F still exist in eesupp/src but are not
      used unless genmake -disable=mdsio)
-Line 4252 
 checkpoint37
+Line 10477 
 checkpoint37
   o Non-Hydrostatic pickup file Pb fixed.
   o bug with Rigid-lid version (since c35) fixed.
- checkpoint36
+ checkpoint36 (2001/02/20)
   o implement Crank-Nickelson barotropic time-stepping
   o recover Time-Average diagnostics
   o fix Pb in checkpoint (PR#19)
   o AIM become a standard package ; clean unused CPP_kees
- checkpoint35
+ checkpoint35 (2001/02/08)
   o subtantial rewrite of dynamics.f
   o allows staggered time-stepping
   o packaged obcs, aim (Atmospheric Physics), zonal_filt, shap_filt
   o added bottom drag (linear + quadratic)
- checkpoint34
+ checkpoint34 (2001/01/30)
   o Modified exchange routines for correct reverse simulation.
   o Added verification output to comply with bug fix in impldiff.F
     as of c33 (exp2, natl_box).
-Line 4275 
 checkpoint34
+Line 10500 
 checkpoint34
   o Added routine GLOBAL_SUM_INT to global_sum.F
   o Added mdsio_gl.F for ECCO purposes.
- checkpoint33
+ checkpoint33 (2000/11/30)
   o Fixed bug in lower BC in impldiff.F
   o Fixed confusion about units of forcing arrays in FFIELDS.h
     namely Fu,Fv,Qnet,Qsw,EmPmR:
-Line 4293 
 checkpoint33
+Line 10518 
 checkpoint33
       possibly use them.
   o Corrected genmake to delete a temporary file during configuration
- checkpoint32
+ checkpoint32 (2000/11/13)
   o Scaling of forcing fields moved from external_forcing.F to
     external_fields_scale.F, called directly after loading fields.
   o Surface relaxation terms added to surface tendency fields in
-Line 4304 
 checkpoint32
+Line 10529 
 checkpoint32
   o Modifications and bug fixes in KPP package.
   o Verification experiment for KPP added (verification/nat_box/)
- checkpoint31
+ checkpoint31 (2000/09/11)
   o Packages interface brought in line with defined standard
     -> new routines packages_...F
     -> changes in initialise_fixed.F, initialise_varia.F
-Line 4321 
 checkpoint31
+Line 10546 
 checkpoint31
     - not yet tested for GMRedi.
     - not yet tested for KPP.
- checkpoint30
+ checkpoint30 (2000/07/13)
   o Updates for OBCs
   o New experiment for test OBCs (internal_wave)
   o New output.txt in verification/exp4/results/
-Line 4330 
 checkpoint30
+Line 10555 
 checkpoint30
   o CPP'd calls to system routines for TARGET_CRAY_VECTOR (P.H.)
     and entry for T90 in genmake
- checkpoint29
+ checkpoint29 (2000/06/21)
   o packaged KPP and GM/Redi
- checkpoint28
+ checkpoint28 (2000/06/09)
   o Corrected initialization of hFacMin for difference vertical coordinates
   o Modified calculation of partial cell thickness to more robust algorithm
   o config_summary.F: replaced write_1D_... by write_0D_...
-Line 4346 
 checkpoint28
+Line 10571 
 checkpoint28
     included store directives and tape key computations required for TAMC.
   o ALL TAMC related changes are between ifdef ALLOW_AUTODIFF_TAMC
- checkpoint27
+ checkpoint27 (2000/04/10)
   o fixed calc_isoslopes() to so that cancellation of terms in tensor
     formulation works properly with variable resolution.
   o restructured the calling tree between the_model_main() and dynamics()
-Line 4354 
 checkpoint27
+Line 10579 
 checkpoint27
   o introduced initialization file pSurfInitFile for free surface (cg2d_x)
     in new routine ini_psurf()
- checkpoint26
+ checkpoint26 (2000/04/05)
   o moved some #ifdef in optional routines to encompass everything
     except the argument declarations. This was using up some memory.
   o fixed macros like _ADT to work with both versions of Linux cpp
-Line 4364 
 checkpoint26
+Line 10589 
 checkpoint26
     (macros are now in eesupp/inc/CPP_EEMACROS.h)
   o patch for 2 processor JAM mode
- checkpoint25
+ checkpoint25 (2000/03/15)
   o updates for OBCs and NH
   o dramatically reduced memory usage
   o added "JAM" routines for use on Artic network
-Line 4375 
 checkpoint25
+Line 10600 
 checkpoint25
      an explicit free-surface option)
   o initial state input files for U and V
- checkpoint24
+ checkpoint24 (1999/08/02)
   o Removed some spurious "REAL"s
   o Updated KPP to latest version from JPL
   o Added a COS(latitude) in horizontal viscosity
- checkpoint23
+ checkpoint23 (1999/05/26)
   o Added del^4 diffusion for salt and temperature
   o Multiple minor fixes (implicit none's, arguments to global_sum, etc.)
- checkpoint22
+ checkpoint22 (1999/05/18)
   o Made many small changes: implicit none, format(i5), etc...
   o Introduced KPP mixing scheme (compiles and runs but *not* tested)
- checkpoint21
+ checkpoint21 (1999/05/18)
   o Introduced new I/O package that supports direct-access records (mdsio.F)
   o Split-up mid-level I/O routines
   o Updated input data for experiments 0,1,2,4 and 5
   o Finally removed the genmake.* scripts (everyone seems happy with genmake)
- checkpoint20
+ checkpoint20 (1999/03/22)
   o Tidied up open-boundaries some more
   o Added non-hydrostatic code
   o Fixed some input data
   o Modified MPI start-up to work in "coupled" context.
- checkpoint19
+ checkpoint19 (1998/12/15)
   o Tidied up directory structure for verification experiments.
   o Added new code for open boundaries.
   o Corrected advective terms near boundaries.
-Line 4408 
 checkpoint19
+Line 10633 
 checkpoint19
   o Implemented free-slip/no-slip BCs and del^4 dissipation.
   o Split default parameters out of ini_parms.F into set_defaults.F.
- checkpoint18
+ checkpoint18 (1998/11/30)
   o Further changes for optional code generation with
     CPP - ugh!
- checkpoint17
+ checkpoint17 (1998/11/03)
   o Beginning to incorporating modularity
     for supporting atmos. and ocean configs.
   o Small changes for TAMC complinace
   o New ultra simple test case. Barotropic box
     configuration "exp0".
- checkpoint16
+ checkpoint16 (1998/10/28)
   o Minor changes to exchange routines to support
     accumulation in reverse mode. Adjoint of an
     assignment is an addition.
-Line 4427 
 checkpoint16
+Line 10652 
 checkpoint16
     syntax) and by g77 under Linux ( 72 character
     limit ).
- checkpoint15
+ checkpoint15 (1998/09/29)
   Rewrote exchange routines to allow
   o General tile <-> tile connectivity.
   o TAMC reverse mode flag ( is this really needed? )
-Line 4436 
 checkpoint15
+Line 10661 
 checkpoint15
     shmput/shmget, VIA, SYSV shmem and every other cool
     communication method.
- checkpoint14
+ checkpoint14 (1998/09/09)
   Consistent isomorphism chages made. These allow dynamical core
   to support both pressure and meters as a vertical coordinate.
- checkpoint13
+ checkpoint13 (1998/07/17)
   Release which corrects global_max problem and a couple
   of KGM time-averaging diagnostic errors. Also contains
   a double-gyre experiment setup as well as the baseline
-Line 4455 
 branch-point-rdot
+Line 10680 
 branch-point-rdot
   I don't want to commit the rDot to the main-trunk until
   we've actually tested it...
- checkpoint12
+ checkpoint12 (1998/07/08)
   Tidy up and added generic genmake script (formerly
   configure script).
   Released to testers.
- checkpoint11
+ checkpoint11 (1998/07/02)
   Re-arranged initialise() and introduced ini_vertical_grid()
   and ini_masks_etc().
- checkpoint10
+ checkpoint10 (1998/07/01)
   Introduced the configure script.
   Separated out the diags package.
   Added template for writing time-averages of tile/intermediate quantities.
   Updated SIZE.h in exp2 and made the data big-endian.
- checkpoint9
+ checkpoint9 (1998/06/22)
   MPI fix. Filename changes (meta/data). salbin*y stuff.
   General tidy-up.
   SST.bin SSS.bin added to verification/exp2
- checkpoint8
+ checkpoint8 (1998/06/22)
   Inludes time-dependant forcing and time-averaging.
   Works at 4x4 and 2.8125x2.8125 global
-Line 4485 
 checkpoint7-4degree-ref
+Line 10710 
 checkpoint7-4degree-ref
   model etc..
   Configured for verification/exp2 - 4 degree global, two process.
- checkpoint7
+ checkpoint7 (1998/06/15)
   Created by cnh
   Simple 4 degree global simulation
   configuration.
-Line 4493 
 checkpoint7
+Line 10718 
 checkpoint7
   hydrography, bathymetry etc
   Does not include Heat Flux and E-P
- checkpoint6
+ checkpoint6 (1998/06/08)
   Created by cnh
   merged checkpoint5 with CD and
   spherical polar code.
   Still some problems with GM Redi
   abd full topography.
- checkpoint5
+ checkpoint5 (1998/06/08)
   Created by AJA
   contains updates to GM Redi
   and reordered timestepping loop
   for Implicit Diffusion.
- checkpoint4
+ checkpoint4 (1998/05/30)
   Created by cnh
   Contains memory saving macros ( _rdxc etc..) for when
   grid variations are limited.
   Contains polynomial coeffs for EOS and knudsen program
   for generation.
- checkpoint3
+ checkpoint3 (1998/05/26)
   Created by cnh
   Added extra flags for runtime options
   Added this file

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