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-revision 1.1062 by mlosch,
Mon Feb  9 17:16:39 2009 UTC
+revision 1.1263 by jmc,
Thu May  6 23:42:56 2010 UTC
 Line 4 
 $Name$
      Notes on tags used in MITgcmUV
      ==============================
+ 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 (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)
+. do not use levels 2 and 3 anymore (but keep them)
+. replace 3D versions of UICE,VICE,HEFF,AREA by 2D versions. This
+      includes changes to pkg/thsice/thsice_get_velocity.F,
+      model/src/external_forcing_surf.F, pkg/obcs/obcs_apply_seaice.F, and
+      pkg/obcs/obcs_apply_uvice.F.
+  - completely remove code for leap-frog time stepping for second order
+    advection
+  - adjusted adjoint accordingly;
+    gradient checks have improved by an order of magnitude!
+ 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
+    applying the slip-boundary conditions.
+  - move initialisation of grid variables from seaice_init_varia to _fixed
+ o adding doc/diags_changes.txt
+ o model/src:
+   do_the_model_io: rename few pkg S/R which are called from do_the_model_io,
+    to avoid "_diags" naming if no relation to pkg/diagnostics.
+   ini_theta,ini_salt: fix (at least compile the code) reading from NetCDF
+    file and only call PLOT_FIELD_XYZ if debugMode=T.
+   remove few PLOT_FIELD_XY calls outside initialisation.
+   remove few unnecessary BARRIER.
+ o pkg/salt_plume: add SaltPlumeSouthernOcean to allow disabling
+   of salt_plume package in Southern Ocean
+ o pkg/thsice:
+  - fix hOceMxL in overlap (needed for sea-ice advection);
+    update output of experiment global_ocean.cs32x15.icedyn.
+ o pkg/seaice:
+  - make the (placeholder-)tracer IceAge a little more meaningful
+   by avoiding ridging of age due to convergent ice flow
+  - add diagnostics for surface temperature, atmospheric and oceanic
+    heat flux, and atmospheric and oceanic ice growth
+ 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)
+ o pkg/mdsio, writelocal:
+    works also in multi-threaded when LOCBIN_IO_THREAD_SAFE is undefined
+    (remove the STOP): uses shared buffer IO to store data from all threads
+    and then let master-thread write nThreads tiles.
+ o pkg/mdsio (read/write field):
+  - tiled IO done in 1 piece (all levels at a time);
+  - new header file "MDSIO_BUFF_3D.h" with 3-D buffers.
+  - multi-threaded: allow to read/write local (non-shared) array
+    (was already working with singleCpuIO ; now works also without);
+    => no longer needs barrier call after reading a file (added inside
+    mds_read/write field).
+  - move barrier calls outside gather/scatter_2d to mds_read/write_field
+ o pkg/obcs/exf
+   - exf_getffieldrec.F: add a few ". _d 0" and
+                         add code to catch the case fldperiod = 0.
+   - obcs_precribe_read.F: change if statements so that they match
+                           the variable type (_RL)
+   - add a separate exf_iprec_obcs to exf_set_obcs (by default equal to
+     exf_iprec) as part of namelist EXF_NML_01
+ o pkg/mdsio:
+   - read/write tiled (local) files: read/write 1-level tile chunk at a time
+     (instead of segment of length sNx); expected to speed up tiled IO.
+ o pkg/exch2:
+   - take buffer copy from/to array out of S/R exch2_send/recv into new
+     S/R exch2_put/get ; Exch of local variable now works with MPI+MTH
+     (tested by removing commom block statement in SOLVE_FOR_PRESSURE.h).
+   - ad version of send/recv no longer needed (but needs exch2_ad_put/ad_get)
+   - simplify argument list of S/R exch2_get_uv_bounds and exch2_get_scal_bounds
+     (which replaces exch2_get_recv_bounds & exch2_get_send_bounds) by
+     including Topology header file (and common blocks).
+   - implement EXCH_IGNORE_CORNERS in scalar exchange (rx1);
+     remove 2nd exch call in exch2_s3d_rx (no longer needed).
+   - document S/R arg. list (+ update some comments)
+ o pkg/seaice:
+   - added SEAICE_CLIM_AIR code, which permits modulation of surface air
+     temperature and humidity over sea ice based on climatological values.
+   - clean up computation of Hibler+Bryan (1987) stress coupling for the case
+     of LSR (this change is expected to change the results slightly because now
+     it uses slightly difference moduli from the second last LSR solution, but
+     that is more consistent with the stress computations; this part of the code
+     is not tested in the verification experiments)
+   - fix diagnostics for flux of ice in case of B-grid
+   - turn strain rates eij and press into global fields within global
+     common block in SEAICE.h for more straighforward diagnostics
+   - fix diagnostics for principal stress components, press, zeta, eta
+     to give something meaning full
+ o change tiling of global_ocean.cs32x15 (12 tiles, 32x16) and generate
+   new output (all 4 tests) using default rotationPeriod.
+ o pkg KPP:
+   - add flag (LimitHblStable) to avoid limiting BL depth under stable conditions
+   - fix vertical indices in RI_IWMIX (match between KPP grid from 0 to Nr+1
+     and normal grid from 1 to Nr)
+ o Fix computations of L4rdt in mom_calc_visc.F
+ o eesupp:
+   new S/R ALL_PROC_DIE (like EEDIE, without irrelevant threads err msg):
+   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 (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
+ o pkg/seaice:
+    add pseudo time stepping for LSOR
+ o pkg/exch2:
+    temporary fix for exch2_s3d_rx; update results of exp. hs94.cs-32x32x5.impIGW
+ o pkg/seaice:
+    Adding separate sea ice albedo, drag coefficients, and HO in Southern
+    Ocean from those in Arctic Ocean.  See *_south in SEAICE_PARAMS.h
+ o SingleCpuIO:
+    fix bug put before chkp61n (May 11), when more than 2 MPI cpu are used.
+ o pkg/seaice:
+    put exchanged variable in (local) common block for MPI+Multi-Threads
+    to work (necessary with exch1, and for now with exch2 too).
+ o verification: to get more experiments tested with mpi, mth and mpi+mth,
+   change tiling of:
+    aim.5l_Equatorial_Channel, aim.5l_LatLon, dome, exp4, global_ocean.90x40x15,
+    hs94.cs-32x32x5, MLAdjust, offline_exf_seaice & tutorial_plume_on_slope
+   update output of exp:
+    exp4, global_ocean.90x40x15(+.dwslp), MLAdjust(all 5),
+    tutorial_plume_on_slope and hs94.cs-32x32x5 (use default rotationPeriod)
+   + ideal_2D_ocean: use default rotation period + test Global_Sum_SINGLECPU
+                    (note: output.txt generated on faulks using only 1 tile)
+ o eesupp & mdsio (SingleCpuIO):
+  - remove MISSING_TILE_IO (from MDSIO_OPTIONS.h), replaced by run-time
+    parameter "W2_useE2ioLayOut" (read from file "data.exch2").
+    Note: was not effective for globalFile & useSingleCpuIO=F; now fixed.
+  - move MDSIO_SCPU.h (pkg/mdsio) to EEBUFF_SCPU.h (eesupp/inc).
+  - fix GLOBAL_SUM_SINGLECPU when using Exch2; re-use same buffers and same
+    gather/scatter S/R as with SingleCpuIO (=> 1 less 2D global RL array).
+ o pkg/exch2:
+  - new code to set-up W2-Exch2 topology (replace matlab-topology-generator):
+    read parameter file "data.exch2" if it exists; otherwise try default regular
+    cube without blank-tile; new header file "W2_EXCH2_SIZE.h";
+  - update matlab-topology-generator (exch2_setup_cs6_print.m) to be compatible
+    with new code (not to be used, just as a backup solution).
+  - add examples (e.g., for lat-lon-cap_120) of parameter file "data.exch2"
+    in utils/exch2/input.
+ 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/
+     receive real*4 array (instead of real*8) to read/write 32.bit files.
+     (new template for gather_2d/scater_2d, new set of S/R MDS_PASS_R4,8toRL,S
+      and remove new mapping S/R)
+ o pkg/mdsio: in preparation for topology-generator within pkg/exch2:
+   - Change declaration of SingleCpuIO buffer, reduced to only 1 dim.:
+     xyBuffer_size, which is set to W2_ioBufferSize from W2_EXCH2_PARAMS.h
+     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 (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.
+ o eesupp/inc/CPP_EEMACROS.h (EXCH & GLOBAL_SUM/MAX macros):
+  - ensure suffix (_R4,_R8,_RS,_RL) correspondance between macro and S/R ;
+  - reduce number of macro definitions (keep only those which are used);
+    can always call directly the corrresponding S/R if needed.
+  - everywhere in the code: change macros (EXCH & GLOBAL_SUM/MAX) suffix
+    _R4/_R8 to _RS/_RL when applied to _RS/_RL variable.
+  Fixed wrong type of arg in:
+    atm2d/put_ocnvars.F cheapaml/cheapaml.F ocn_compon_interf/ocn_apply_import.F
+    ctrl/ctrl_map_ini_ecco.F seaice/seaice_do_diags.F seaice/seaice_model.F
+  To fix: global_sum of var in common block is wrong (multi-threaded) in:
+    dic/dic_atmos.F ebm/ebm_area_t.F ebm/ebm_zonalmean.F sbo/sbo_calc.F
+  To fix: aim_v23/aim_do_co2.F (BARRIER & GLOBAL_SUM within bi,bj loops)
+ o adjustment.cs-32x32x1: test "blank tiles" when compiling with mpi; 2nd
+   "nlfs" mpi test is going to stop when checking for unconnected tile egdes.
+ o eesupp/src: new S/R to stop everyone when 1 (or more) Proc. find an error
+ o pkg/exch2: new S/R EXCH2_CHECK_DEPTHS to check that unconnected tile
+   edges are closed (zero depth); might happen with "blank tiles";
+   for now, disabled if using OBCS.
+ o tools/gemake2: delete modifs from March 27-29 2009 (with option "-mpi":
+   link *_mpi files from "MODS" dir) to return to a strait-forward behavior.
+ o move read_write.F to write_utils.F ; new parameter (maxLengthPrt1D)
+   to reduce length of 1.D array print in STDOUT.
+ o adjustment.cs-32x32x1: changed to oceanic test with 1 continent
+   + use 48 tiles (16x8): this will allow to test "blank tiles".
+ o start to test MPI + multi-threaded (change testreport to skip tests
+   where number of tiles do not match).
+ o genmake2: add option "-omp" to turn on Open-MP ;
+   passed to testreport (if using -mth) ; merge few (*+mth) optfiles.
+ o pkg/exch2 (+ utils/exch2): ignore blank tiles (instead of removing them)
+   and keep the original tile numbering. Note: compatible with old
+   W2_EXCH2_TOPOLOGY.h & w2_e2setup.F topology files.
+ 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:
+   switching to new version of S/R GETPWHERE (#define TRY_NEW_GETPWHERE)
+   and generate new output. Note: new output is much closer to the old
+   one (v1.8) generated with pgf77 -O2 on Mar 14 2007 than it is from
+   the previous one (v1.9) generated with pgf77 -O0 on Jun 13 2007.
+ o pkg/fizhi:
+  - change to avoid indices going deliberately over array-bounds
+  - remove unnecessary MPI stuff
+  - perpetual spring equinox with "#define FIZHI_USE_FIXED_DAY"
+  - new version of S/R GETPWHERE available with #define TRY_NEW_GETPWHERE:
+    does not go over array-bounds and therefore returns reliable output.
+  - in fizhi_driver.F & fizhi_turb.F, fix "get_alarm" calls:
+    this S/R has 4 output arguments, which are used inside "get_alarm";
+    when it is called with the same variable "ndum" in place of several
+    output arguments, this produces weird side effect inside "get_alarm"
+   (e.g., datein=dates(n) is overwritten by timein=times(n) since both
+    datein & timein, resp. 2nd and 3rd arg., are pointed to the same "ndum"
+    address) and produces error.
+ o tools/gemake2: (March 27-29 2009)
+   with option "-mpi": link *_mpi files from "MODS" dir (this is what
+   testreport does).
+ o lab_sea experiment: change from 2x1 tiles to 2x2 tiles and regenerate output
+ o pkg/seaice: fix bug in new version of S/R SEAICE_LSR.F:
+    update lab_sea.lsr & lab_sea.salt_plume results
+ o pkg/seaice:
+   Major overhaul of the LSOR solver: change discretization from original
+   finite differences to finite volume. The old routine is still in the
+   file seaice_lsr.F and can be turned on with the CPP-flag
+   SEAICE_OLD_AND_BAD_DISCRETIZATION
+   Along with this change, the discretization of the strain rates is changed.
+   The same flag turns on the old discretization in seaice_calc_strainrates.F
+   All verification experiments with seaice are affected (except for
+   seaice_exf_offline); global_ocean.cs32x15/input.icedyn recovers the old
+   results by setting the above flag.
+   Further changes involve changes in defaults:
+   - ALLOW_FLOODING is defined and turned on by default
+   - SEAICEadvSnow = .true. is now the default
+   - SEAICEadvSalt = .true. is now the default
+   - SEAICEadvAge  = .true. is now the default
+   - SEAICE_clipVelocities  = .false. is now the default
+                                      (as per J. Zhang's recommendation)
+   - B-grid, and thus not tested: SEAICE_TEST_ICE_STRESS_1/EXPLICIT_SSH_SLOPE
+     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 (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
+               add more debugging diagnostics
+   seaice_evp: removed superfluous many metric terms of FV discretization
+               of stress divergence
+               affects lab_sea, lab_sea.hb87
+   seaice_ocean_stress: removed superfluous many metric terms of FV discretization
+               of stress divergence for non-evp solver
+               (this part is not tested anywhere)
+   seaice_calc_strainrates: fixed a bug in no-slip boundary conditions,
+               they were effectively only half slip
+               affects lab_sea.hb87
+   updated all relevant verification experiments (except lab_sea//output_adm.txt
+     which was left over, but fails at level 7 & 6)
+ 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
+ o pkg/mnc: fix the coordinate variables for multi-tile curvi-linear grids
+   that are not cubed-sphere grids
+ o pkg/seaice: fix a bug for the rare case of SEAICE_VECTORIZE_LSR
+ o pkg/ctrl:
+   fix bug in ctrl_depth_ini.F (EXCH_XYZ was applied to 2-D field xx_r_low)
+ o non-hydrostatic (calc_gw.F):
+   fix viscA4 on CS-grid + fix diagnostics: Wm_Diss & Wm_Advec
+   update output of exp. global_ocean.cs32x15.viscA4
+ o remove backward compatibility for thetaMin,phiMin
+   (replaced by xgOrigin,ygOrigin on Jan 27, 2009)
+ o pkg/exf: fix a serious bug in exf_set_uv.F: do a rotation of the
+   interpolated wind field not only for curvilineargrid=.true., but also
+   for a rotated grid (rotateGrid=.true.)
+ o pkg/exf: add capability to bypass interpolation for runoff
+   by setting yet another CPP-flag
+ o eesupp/src, B-grid exchange:
+   add simple (6 tiles, non MPI) CS exch + standard interface S/R.
+ o autodiff
+   new CPP option ALLOW_TAMC_SINGLEPREC_COMLEV
+   allows to switch to single-prec common blocks;
+   corresponding switch occurs in tamc.h, integer isbyte
+   TAF store directivs "byte" and "kind" seem equivalent;
+   Most tamc.h have been updated correspondingly.
+ checkpoint61i (2009/02/13)
+ o autodiff:
+   fix autodiff_sore/_restore indices for obcs
+   (spotted by I. Hoteit, M. Mazloff)
+ o pkg/autodiff, pkg/ctrl:
+   Add flag to reduce all tapelev I/O to single-prec.
+   In data.ctrl set
+     doSinglePrecTapelev = .TRUE.
+ o model/src/ini_curvilinear_grid.F, new grid-file format without EXCH2:
+   check in hack for SX8 compiler (for dxV, dyU); remove it afterwards.
  o pkg/shelfice: fix bug with SHELFICEconserve flag, prepare for
    real fresh water flux (not yet)
  o pkg/mdsio & rw:
-Line 18 
 o pkg/flt:
+Line 819 
 o pkg/flt:
   - more efficient I/O, using new options of MDS_WRITEVEC_LOC S/R.
   - add vert. coordinate & horiz. indices to output files.
   - change vertical position in initial condition, from index to depth [m].
+  - store horizontal (decimal) indices i,j in common block (instead of coord. x,y)
+    (easier to get to a curvilinear grid) ; delX,delY no longer used.
  o pkg/ggl90: a few modifications:
   - fix bottom boundary condition, and interpolation of KappaE
     near top and bottom
-Line 27 
 o pkg/ggl90: a few modifications:
+Line 830 
 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 51 
 o pkg/mdsio: read/write vector:
+Line 854 
 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 64 
 o pkg/obcs: fix a CPP-flag, bug reported
+Line 867 
 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 93 
 o fix CPP-flag REAL4_IS_SLOW, when _RS e
+Line 896 
 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 118 
 o pkg ggl90:
+Line 921 
 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 145 
 o add initialisation of deepFac if using
+Line 948 
 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 163 
 o change FIND_RHO to FIND_RHO_2D :
+Line 966 
 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 178 
 o exch2:
+Line 981 
 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 187 
 o pkg/mnc: small fix in mnc_handle_err:
+Line 990 
 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 198 
 o autodiff
+Line 1001 
 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 223 
 o bridging the gap between eddy stress a
+Line 1026 
 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 254 
 o pkg/ptracers: add second-order moment
+Line 1057 
 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 289 
 o thsice pkg:
+Line 1092 
 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 315 
 o in mom_calc_visc, fix average value of
+Line 1118 
 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 356 
 o pkg/ctrl:
+Line 1159 
 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 410 
 o pkg/seaice: add a new flag SEAICEuseTE
+Line 1213 
 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 428 
 o pkg/obcs and pkg/seaice:
+Line 1231 
 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 450 
 o no longer write pickup from THE_MODEL_
+Line 1253 
 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 472 
 o pkg/ptracers:
+Line 1275 
 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 515 
 o pkg/mdsio & pkg/rw:
+Line 1318 
 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 556 
 o change units of EmPmR (inside the code
+Line 1359 
 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 589 
 o pkg/thsice:
+Line 1392 
 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 634 
 o pkg/cd_code: add brackets in multiple
+Line 1437 
 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 665 
 o pkg/seaice
+Line 1468 
 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 695 
 o pkg/seaice:
+Line 1498 
 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 741 
 o pkg/seaice:
+Line 1544 
 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 774 
 o adjoint:
+Line 1577 
 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 845 
 o pkg/seaice
+Line 1648 
 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 887 
 o pkg/seaice: fix bug in evp solver, whi
+Line 1690 
 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 913 
 o pkg/thsise
+Line 1716 
 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 929 
 o ice dynamics (pkg/seaice) with thsice
+Line 1732 
 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 937 
 o IO option for global-file compact form
+Line 1740 
 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 958 
 o cpl_aim+ocn exp.: use consistent rhoCo
+Line 1761 
 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 977 
 o 2nd-Order Moment Advection Scheme (Pra
+Line 1780 
 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 992 
 o add option (linFSConserveTr) to correc
+Line 1795 
 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 1035 
 o pkg/seaice: overhaul of thermodynamics
+Line 1838 
 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 1069 
 o modifications to pkg/seaice/growth.F a
+Line 1872 
 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 1093 
 o Adding some pkg/diagnostics capability
+Line 1896 
 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 1104 
 o new function "MASTER_CPU_IO" (=T if ma
+Line 1907 
 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 1115 
 o diagnoctics: modify UVELPHI and VVELPH
+Line 1918 
 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 1129 
 o shelfice:
+Line 1932 
 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 1150 
 o change default MAX_NO_THREADS from 32
+Line 1953 
 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 1176 
 o calc_gw: true flux-form, account for h
+Line 1979 
 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 1194 
 o pkg/ecco:
+Line 1997 
 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 1227 
 o tracer advection:
+Line 2030 
 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 1235 
 o adjoint store dir. adjusted accordingl
+Line 2038 
 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 1249 
 o pkg/seaice: added SEAICEuseEVPpickup p
+Line 2052 
 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 1259 
 checkpoint58h_post
+Line 2062 
 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 1275 
 o couple pkg/thsice to pkg/seaice:
+Line 2078 
 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 1306 
 o fix bug in aim+thsice albedo: snow & i
+Line 2109 
 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 1314 
 o R_STAR adjoint implemented.
+Line 2117 
 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 1354 
 o new package prifiles:
+Line 2157 
 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 1388 
 o seaice:
+Line 2191 
 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 1451 
 o seaice:
+Line 2254 
 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 1504 
 o pkg/bulk_force:
+Line 2307 
 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 1517 
 o clean up 3-dim. relaxation codes:
+Line 2320 
 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 1548 
 o Adding Laplacian-type smoothness const
+Line 2351 
 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 1563 
 o cfc fixes for final year of integratio
+Line 2366 
 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 1583 
 o adjoint
+Line 2386 
 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 1600 
 o PTRACERS: added namelist parameter PTR
+Line 2403 
 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 1641 
 o reduce number of exch calls in shap_fi
+Line 2444 
 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 1664 
 o Clean, new version of mom_calc_visc.
+Line 2467 
 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 1690 
 o various changes to mnc including:
+Line 2493 
 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 1710 
 o new infrastructure for seaice model vs
+Line 2513 
 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 1727 
 o Modifications to enable scripted COMMO
+Line 2530 
 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 1741 
 o Dissipation & phiHyd gradient are alwa
+Line 2544 
 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 1750 
 o set to #undef CTRL_SET_OLD_MAXCVARS_30
+Line 2553 
 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 1766 
 o enable useSingleCpuIO for mdsio vector
+Line 2569 
 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 1784 
 o fix aim_diagnostics_init.F mate number
+Line 2587 
 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 1818 
 o fix bug in rStar code (calc_r_star.F)
+Line 2621 
 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 1837 
 o pkg/diagnostics:
+Line 2640 
 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 1846 
 o pkg/diagnostics: prepare for Global/Re
+Line 2649 
 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 1864 
 o test AB-3 code with 4th.Order advectio
+Line 2667 
 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 1878 
 o added new control variables
+Line 2681 
 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 1904 
 o adjoint-related modifications
+Line 2707 
 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 1922 
 o diagnostics: add pickup functionality
+Line 2725 
 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 1944 
 o move state variable diagnostics to the
+Line 2747 
 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 1980 
 o pkg/mdsio/
+Line 2783 
 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 2026 
 o re-arrange diagnostics pkg initialisat
+Line 2829 
 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 2053 
 o untangle a few ifdefs related to cost,
+Line 2856 
 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 2071 
 o exf:
+Line 2874 
 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 2086 
 o testreport previously did a lousy job
+Line 2889 
 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 2131 
 o GCHEM:
+Line 2934 
 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 2161 
 o mdsio: filename info to both stderr, s
+Line 2964 
 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 2172 
 o make all subroutines 30 or less charac
+Line 2975 
 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 2187 
 o give MNC the ability to create additio
+Line 2990 
 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 2195 
 o allow to set a vertical profile of ver
+Line 2998 
 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 2205 
 o Fixing directives for non-ECCO forward
+Line 3008 
 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 2216 
 o some delicate re-shuffle of store dire
+Line 3019 
 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 2271 
 o more obcs stuff
+Line 3074 
 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 2285 
 o obcs stuff
+Line 3088 
 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 2296 
 o use a more standard discretization for
+Line 3099 
 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 2304 
 o merged code to
+Line 3107 
 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 2314 
 o up-to-date adjoint of previous breaks
+Line 3117 
 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 2340 
 o overhaul of IO so that we now have fla
+Line 3143 
 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
    - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
    - these scheme operate in a similar manner as KPP (without ghat, of
      course), however there is only one diffusivity that is used for both
-     temperature and salinity (and passive tracers)�
+     temperature and salinity (and passive tracers)
  o add offline package
  o add "verification/dic_example" which contains a dic-gchem-ptracer setup
    provided by Stephanie Dutkiewicz
  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 2370 
 o fix a bug in Flux deriv. vs Ts (pkg/ai
+Line 3173 
 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 2381 
 o define the max number of passive trace
+Line 3184 
 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 2391 
 o staggerTimeStep & NLFS: rescale T & S
+Line 3194 
 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 2412 
 o new parameter "nShapS": allow to treat
+Line 3215 
 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 2425 
 o merged cylindrical coord configuration
+Line 3228 
 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 2444 
 o regenerated output for global_ocean_eb
+Line 3247 
 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 2463 
 o Adjoint of EBM package + verification
+Line 3266 
 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 2481 
 C        Destabilization of the thermoha
+Line 3284 
 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 2489 
 o pkg/land: only liquid water can diffus
+Line 3292 
 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 2502 
 o Fixed verification/natl_box_adjoint ex
+Line 3305 
 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 2512 
 o stable checkpoint with up to date adjo
+Line 3315 
 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 2543 
 o fix in pkg/thsice:
+Line 3346 
 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 2575 
 o test exp. advect_cs: use the standard
+Line 3378 
 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 2586 
 o aim_v23 modification for new land mode
+Line 3389 
 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 2599 
 o fix ini_curvilinear_grid ; test CS exp
+Line 3402 
 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 2612 
 o set all ...Freq to zero after cost_fin
+Line 3415 
 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 2620 
 o Really weird thing!
+Line 3423 
 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 2637 
 o merged mom_vi_calc_relvort3.F, mom_vi_
+Line 3440 
 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 2656 
 o added temporary hack for sea-ice dynam
+Line 3459 
 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 2670 
 o step.1 : rewrite (as in MultiDimAdvec)
+Line 3473 
 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 2681 
 o added exf_offset_atemp for Celsius to
+Line 3484 
 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 2710 
 o check-in the first version of the coup
+Line 3513 
 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 2728 
 o Removed all CPP options for cal packag
+Line 3531 
 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 2736 
 o new version: "thsice" of thermodynamic
+Line 3539 
 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 2746 
 o missing PTRACERS headers in some routi
+Line 3549 
 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 2761 
 o fix problem with ECCO-related divided
+Line 3564 
 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 2782 
 o top level routines the_main_loop, forw
+Line 3585 
 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 2794 
 o pkg/grdchk
+Line 3597 
 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 2815 
 o ctrl package totally restructured
+Line 3618 
 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 2830 
 o create initial cd_code package
+Line 3633 
 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 2851 
 o Correcting initialisations for fVerU,
+Line 3654 
 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 2859 
 o added the [#include "AD_CONFIG.h"] sta
+Line 3662 
 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 2868 
 o modifications to make FREEZE flux visi
+Line 3671 
 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 2876 
 o added [#include "AD_CONFIG.h"] to all
+Line 3679 
 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 2909 
 o added an include barrier to the defaul
+Line 3712 
 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 2923 
 o Moving pkg-specific flow directives to
+Line 3726 
 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 2941 
 o modify gchem pkg to be more versatile
+Line 3744 
 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 2949 
 o update AD-related stuff
+Line 3752 
 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 2966 
 o Bug fix to pkg/ptracers, pkg/generic_a
+Line 3769 
 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 2976 
 o atmospheric geopotential: - include wa
+Line 3779 
 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 2989 
 o Use cluster local disks for purely loc
+Line 3792 
 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 3012 
 o added verification for adjoint with pt
+Line 3815 
 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 3027 
 o merged improved packages from ecco-bra
+Line 3830 
 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 3043 
 o New variable in PARM03 for more flexib
+Line 3846 
 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 3057 
 o exf totally restructured
+Line 3860 
 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 3067 
 checkpoint50f_pre
+Line 3870 
 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 3106 
 o new flag "useCDscheme" (default=F); re
+Line 3909 
 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 3126 
 checkpoint50
+Line 3929 
 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 3164 
 o DIVA:
+Line 3967 
 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 3182 
 o Modif. for DIVA:
+Line 3985 
 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 3202 
 o accurate phiHyd when using interface-W
+Line 4005 
 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 3230 
 o pkg/seaice:
+Line 4033 
 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 3241 
 o following exp works with Olx=Oly=2 (an
+Line 4044 
 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 3249 
 o in preparation for r*:
+Line 4052 
 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 3298 
 o Yet more changes in gmredi:
+Line 4101 
 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 3314 
 o case GM_BOLUS_ADVEC should be cleaned
+Line 4117 
 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 3340 
 Gradient checks OK for
+Line 4143 
 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 3352 
 o modifications for using pkg/exf with p
+Line 4155 
 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 3376 
 o OCEANICP & realFreshWater: include P-E
+Line 4179 
 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 3393 
 o verification/lab_sea
+Line 4196 
 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 3410 
 o bulk_force and therm_seaice
+Line 4213 
 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 3439 
 o Updated verification/carbon/
+Line 4242 
 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 3493 
 o Adding new verification experiment glo
+Line 4296 
 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 3506 
 o introduced flag for controllin non-hyd
+Line 4309 
 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 3519 
 o made convective adjustment work with p
+Line 4322 
 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 3535 
 o S/R aim_initialise.F replace S/R aim_i
+Line 4338 
 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 3558 
 o introduced new parameter rhoConstFresh
+Line 4361 
 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 3582 
 o cleaned up find_rho
+Line 4385 
 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 3592 
 o Enable tangent linear (forward mode) g
+Line 4395 
 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 3601 
 o Added new equation of state -> MDJWF
+Line 4404 
 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 3633 
 o Added UNESCO EOS, but not recommended
+Line 4436 
 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 3670 
 o added hooks for Eliassen Palm fluxes (
+Line 4473 
 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 3684 
 o add new flags:
+Line 4487 
 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 3692 
 o modifications to gradient check packag
+Line 4495 
 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 3704 
 o in initialise_varia, moved call packag
+Line 4507 
 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 3724 
 o errorMessageUnit set non-equal zero in
+Line 4527 
 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 3795 
 o merge of relevant stuff from the ecco-
+Line 4598 
 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 3803 
 o update AIM experiments (NCEP input fil
+Line 4606 
 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 3821 
 o Modified store directives for split of
+Line 4624 
 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 3834 
 o more mods for non-linear free-surface
+Line 4637 
 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 3844 
 o changes to commenting of arguments for
+Line 4647 
 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 3863 
 o TAMC-related update to cope with mom_f
+Line 4666 
 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 3878 
 o corresponding split of calc_diffusivit
+Line 4681 
 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 3892 
 o added new expt "solid-body.cs-32x32x1"
+Line 4695 
 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 3900 
 o extended iMin,jMin range for calc_comm
+Line 4703 
 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 3925 
 checkpoint39
+Line 4728 
 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 3933 
 checkpoint38
+Line 4736 
 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 3950 
 checkpoint37
+Line 4753 
 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 3973 
 checkpoint34
+Line 4776 
 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 3991 
 checkpoint33
+Line 4794 
 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 4002 
 checkpoint32
+Line 4805 
 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 4019 
 checkpoint31
+Line 4822 
 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 4028 
 checkpoint30
+Line 4831 
 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 4044 
 checkpoint28
+Line 4847 
 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 4052 
 checkpoint27
+Line 4855 
 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 4062 
 checkpoint26
+Line 4865 
 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 4073 
 checkpoint25
+Line 4876 
 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 4106 
 checkpoint19
+Line 4909 
 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 4125 
 checkpoint16
+Line 4928 
 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 4134 
 checkpoint15
+Line 4937 
 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 4153 
 branch-point-rdot
+Line 4956 
 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 4183 
 checkpoint7-4degree-ref
+Line 4986 
 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 4191 
 checkpoint7
+Line 4994 
 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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