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revision 1.8 by adcroft, Wed Jul 1 22:49:29 1998 UTC revision 1.712 by jmc, Wed Aug 9 16:02:19 2006 UTC
# Line 1  Line 1 
1  $Header$  $Header$
2    $Name$
3    
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
8      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
9      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
10        to work with SingleCpuIO.
11    o add "_d 0" to real constant of pkg/cfc subroutines ;
12       update exp. cfc_exemple & tutorial_cfc_offline output files.
13    o multi-threading and IO:
14      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
15        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
16      - barrier before and after reading.
17      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
18      - avoid using MDS_WRITELOCAL for LAND pkg output.
19      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
20        common-block variables ; Allows multi-threading with master-thread IO.
21    o change default MAX_NO_THREADS from 32 to 4 ;
22      and stop cleanly when MAX_NO_THREADS is too small.
23    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
24    
25    checkpoint58m_post
26    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
27       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
28    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
29       keep global_ocean.90x40x15 (for AD testing) with former secondary test
30       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
31    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
32        add MITgcm_tutorials (= code + all the tutorials)
33    o ecco, option to compute cost for total ssh (mean+anom)
34    o consistent with addition of ptracer and ssh in pkg/profiles
35    o profiles: adding ptracer and ssh
36    o testreport: change multi-test output-file name
37      (from output.txt.{name} to output.{name}.txt)
38    o profiles: now ok for mutli-tiles case
39    o seaice: add 4 parameters for different advection schemes for area,
40      (effective) seaice thickness, enthalphy, and snow height. Their default
41      is the standard parameter SEAICEadvScheme
42    o calc_gw:
43     - add cosFacU in zonal viscous flux (harmonic.visc.).
44     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
45       of tutorial_plume_on_slope.
46    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
47    o calc_gw: true flux-form, account for horizontal grid spacing.
48      update rotating_tank results, but not plume_on_slope (affected at
49      truncation level, 11 digits).
50    
51    checkpoint58l_post
52    o calc_gw:
53     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
54     - remove side-drag for now (need to fix it); update plume_on_slope results.
55     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
56    o commit code to make SST/SSS weights spatially variable
57      (based on either variable in-situ or variable initial T/S weights)
58    o pkg/ecco:
59      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
60        now based on horizontally varying weights wthetaLev, wsaltLev
61      * cost_averagesflags now returns year indices in addition to day, month
62      * sflux balance is performed on annual basis
63        (sflxumm, sfluxmm2, bal_sfluxmm)
64      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
65        including separate counting and multipliers
66    o pkg/rbcs
67      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
68    
69    checkpoint58k_post
70    o testreport:
71     - always build in dir. "build" (if not there, mkdir build instead of building
72       & running in input)
73     - run in dir run (if it exists), in build otherwise.
74     - call prepare_run (if input/prepare_run exists)
75     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
76    o pkg/exf modifications to interpolation and rotation routines for more
77       reasonable treatment of North Pole singularity: for tracers North Pole
78       value is set to northernmost zonal-mean value, for zonal velocity it is
79       set to zero, and for meridional velocity it is set to northernmost value.
80    o pkg/exf/exf_check_range.F
81     - add tile index to diagnostics and move stop statement to the very
82       end of the routine.
83    o pkg/diagnostics: (diagnostics_main_init.F)
84      define title of isomorphic variables according to the current config.
85    o pkg/thsice with pkg/seaice dynamics:
86    - fix domain of computation (interior only, required for exf) and do exchanges
87    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
88    o towards a standard way of dealing with multi-threading in MONITOR
89      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
90    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
91       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
92    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
93    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
94    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
95       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
96    o tracer advection:
97     - clean-up and simplify calc_common_factors.F
98     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
99       advection subroutine (but still not used within DST advection S/R)
100    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
101    
102    checkpoint58j_post
103    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
104      from file (collects calls previously in FORWARD_STEP)
105    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
106    o adjoint store dir. adjusted accordingly
107    o genmake2
108      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
109    
110    checkpoint58i_post
111    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
112      on wind stress (SEAICEstressFactor defaults to 1.)
113    o Total number of Timers is finite (<=40): comment out 2 non-essential one
114      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
115    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
116      on CS-grid: no longer loosing mass.
117    o exf & curvilinear-grid: no longer modify longitude xC & xG.
118    o pkg/ggl90: fix sloppy output and fix a bug
119    o pkg/seaice: added SEAICEuseEVPpickup parameter
120      - Set to false in order to start EVP solver with
121        non-EVP pickup files when using SEAICEuseEVP
122      - fix sign error in diffusion in seaice_calc_rhs
123    
124    checkpoint58h_post
125    * Modifications for bottom topography control
126      o replace hFacC by _hFacC at various places
127      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
128      o add non-self-adjoint cg2d_nsa
129      o update autodiff support routines
130      o re-initialise hfac after ctrl_depth_ini
131      o works for 5x5 box, doesnt work for global_ocean.90x40x15
132    * Adding verification for 5x5 box (4-layer) bottom topography control
133    
134    checkpoint58g_post
135    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
136       used for mean seasonal cycle, mean diurnal cycle); add an example
137       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
138    o pkg/ggl90:
139      - add parameter (minimum surface kinetic energy)
140      - fix bug (avoiding division by zero)
141    o couple pkg/thsice to pkg/seaice:
142      - modify advection in seaice to accomodate new scalar fields to be advected
143      - only muliDimAdection scheme work with seaice/thsice
144      - mapping of thsice-variables to seaice-variables, back and forth
145      - does not break the verification experiments, but does not give the
146        desired results either
147    o pkg/seaice
148      - make (default) second order advection a bit less confusing?
149    
150    checkpoint58f_post
151    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
152      to pkg/seaice):
153      - new routines thsice_map_exf and thsice_get_exf provide the interface
154      - add an additional formal parameter to thsice_solve4temp
155    o pkg/exf:
156      - add new fields wspeed, snowprecip (to be able to couple to thsice)
157      - correct Stefan-Boltzmann constant
158      - new parameter for longwave surface emittance
159      - separate some stuff from exf_bulkformulae into new routines  
160        exf_radiation, exf_wind
161      - add new parameters and constants: longwave emissivity for ocean, ice
162        and snow, evaporation parameters over ice
163      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
164        either wind from stress or stress from wind
165    o pkg/thSIce:
166    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
167    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
168       and THSICE_CALC_THICKN
169    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
170    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
171      to make debugging easier.
172    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
173    o pkg/bulk_force:
174      - clean-up comments and parameters ;
175      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
176    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
177      generate new output for test-experiment: aim.5l_cs.thSI
178    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
179      testreport accordingly
180    
181    checkpoint58e_post
182    o SEAICE_CGRID adjoint done
183    o R_STAR adjoint implemented.
184      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
185      * need to sort out init. of h0facc, etc.
186    o Make pkg/profile fully independent of ecco,cost, etc. stuff
187      to be able to use it in pure forward.
188    
189    checkpoint58d_post
190    o upgrade simple test-experiment to tutorial example:
191     step.1: duplicate the experiment and (step.2) will remove the old copy.
192      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
193      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
194      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
195      tutorial_global_oce_biogeo    <- copy of dic_example
196      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
197      tutorial_plume_on_slope       <- copy of plume_on_slope
198      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
199      tutorial_global_oce_optim     <- empty for now (David ?)
200      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
201     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
202    o correct a sign problem in cost_scat.F
203    o obcs and ptracers: fix boundary conditions for advections schemes
204      with larger stencil
205    o thsice adjoint: start
206    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
207      completeness
208    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
209      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
210    o ptracers adjoint:
211      * avoid extensive recomputatations
212      * fix missing re-init. of gptr (missed by TAF)
213    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
214      me to turn off the excessive output to STDOUT that this package produces
215    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
216      and add those terms in Vector-Invariant formulation.
217    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
218      if the control period (xx_hfluxperiod etc) is 0
219    o in profiles pkg, clean routines and fix details
220    o in ecco pkg, reading ssh data:
221      fix problem in case the model does not start at iter0=0
222    o fix mnc-pickup/restart for ptracers
223    o new package prifiles:
224      code to compute profile-based cost by Gael Forget
225      (modifs in ecco, ctrl, autodiff)
226    o Benign bug fix in initialization (spotted by M. Mazloff) of
227      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
228    
229    checkpoint58c_post
230    o adjoint: finish NLFS adjoint and provide reference output in
231      verification/global_ocean.90x40x15/results_ad_nlfs
232    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
233      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
234      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
235      with SEAICE_CGRID defined.
236    o move calendarDumps from "data" to "data.cal" and clean-up the code
237      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
238    o add useEXF & useCAL flags (for now, set in hard-coded way)
239    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
240      (were missing in NH mode, and wrong in quasihydrostatic mode).
241      waiting for Chris updated version of calc_gw to add those CALLs.
242    o fix bug in quasihydrostatic S/R ;
243      add a test for this option: global_ocean.90x40x15.qshyd
244    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
245      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
246    o add on/off flag useOffLine for package OFFLINE
247    o seaice:
248      - modify advection so that it works also on the C-grid
249      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
250        problem in multi-tile runs with C-grid
251      - add flags for clipping ice velocities and/or masking solver forcing
252      - fix drag (ocean on ice) formulation and a bug that caused noise in the
253        C-grid solver
254      - added a few comments to seaice_diffusion.F
255      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
256        are now exclusive)
257      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
258        required re-ordering the code a little:
259       + make DAIRN global variable (defined in SEAICE)
260       + move computation of the viscosities eta and zeta into a new separate
261         routine (because I need to recompute them in seaice_ocean_stress.F)
262    
263    checkpoint58b_post
264    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
265      update output.txt of exp. aim.5l_cs.thSI
266    o various mnc cleanups and improvements:
267      + shrink lookup tables by factor of ~4
268      + better error reporting when running out of lookup space
269      + able to handle longer path/file names (up to 500 chars)
270    o adjoint:
271      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
272      - TBD: "hidden" mom_vecinv recomp. in dynamics
273    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
274     (allow to differentiate between forcing components using new integer flags:
275      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
276     and add new flag to put Dissipation tendency out of Adams-Bashforth.
277    o ecco
278      - enable trend removal from SSH anomaly obs.
279    o adjoint
280      - a fix for PmEpR when #undef EXACT_CONSERV
281      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
282      - try to fix "hidden" recomp. in forward_step for NLFS
283        (NLFS seems broken sometimes after I checked it in)
284    o seaice:
285     - add c-grid version of the dynamic solver:
286       + three new routines that are the c-grid substitute lsr, dynsolver
287         and ostres
288       + put a few fields that were local to dynsolver into global common
289         blocks, so that I can move the computation of stresses etc into
290         seaice_lsr (saves coding but may break the adjoint).
291     - replace more hardwired parameters by runtime parameters
292     - add ice masks that mask the rhs of the implicit solvers where there
293       is no ice (commented out in seaice_dynsolver, because i am not sure
294       if this works properly), eventually this should replace the clipping
295       of ice velocities in seaice_dynsolver to +/-40cm/s.
296    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
297      include it only where its needed
298    o move balancing of fluxes before the call of external_forcing_surf
299    o seaice:
300      - correct units of turning angles (now they are really in degrees)
301      - move computation of GWATX/Y out of main routine into dynsolver
302      - initialize GWATX/Y in seaice_init
303    o Apply mask on Fresh-Water flux (needed for SSH forcing).
304      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
305    o seaice: add runtime flags for turning angles (default to zero)
306    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
307      and trend from exf forcing and ctrl control adjustments
308    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
309      (since checkpoint57x_post)
310    o change the default rotation period to 86164.s = the Earth rotation
311    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
312      and based on a reference stratification. Tested within hs94.cs-32x32x5.
313    o seaice advection: add code for choosing between the default (2nd order
314      central differences) and multiDim advection schemes provided by
315      pkg/generic_advdiff
316    o seaice:
317      - removed all references to SEAICE_GRID.h fields from
318        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
319        (cubed-sphere configuration will change a little)
320      - grid computations in seaice_init are obsolete now.
321      - cleaned up code a little so that is easier to read (hopefully).
322      - added new (better?) discretizations of default advection and diffusion
323        (turn on with SEAICEuseFluxForm)
324      - replace 1 in 3d global fields by kSurface in growth.F
325      
326    checkpoint58a_post
327    o seaice:
328      - bug fix in advect.F
329    o shelfice:
330      - separate shelfice load anomaly from pload (breaks with time
331        dependent forcing), => introduce constant field shelficeLoadAnomaly.
332        Its default is 0., but it may be computed more cleverly from (unknown)
333        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
334        done offline. A good approximation of the pressure load anomaly is
335        necessary to avoid large initial adjustment processes underneath
336        deep-reaching shelfice.
337      - small fix in ISOMIP shelfice_thermodynamics
338      - add more sophisticated thermodynamics of Hellmer (1989), this is
339        now the default
340      - give a few constants more intuitive names
341    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
342      if bulk formulae are used in long integration (especially EmPmR). Turn
343      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
344      if balancePrintMean, the imbalance that is substracted is printed to
345      STDOUT.
346    o fix bug (typo) in obcs_apply_eta.F
347    o add a new package shelfice which enables us to model the circulation
348      underneath shelf-ice with draughts of hundreds of meters.
349     - works
350     - to do: + include improved thermodynamics
351              + check whether kSurfC (from model/inc/SURFACE.h) can be used
352                instead of new field kTopC
353              + can we use topoFile, Ro_surf and existing code in ini_depth.F
354                instead of new field R_shelfIce and new code in ini_depth.F
355                and ini_mask_etc.F?
356              + adjust vertical mixing schemes?
357    o seaice pkg:
358     - add a cpp-flag to include a simple formula for a salinity dependent
359       freezing point of sea water at the surface
360     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
361       meridional stresses are now different (and hopefully correct)
362    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
363       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
364       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
365    o pkg/diagnostics: add options and parameters for regional-statistics
366       diagnostics ; define regions by reading a region-mask from a file
367       (might add other options later)
368    o pkg/bulk_force:
369     - add option and parameters to use AIM surface-flux formulae.
370     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
371       others forcing fields (defined in PARM05, parameter file "data") are loaded
372       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
373     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
374     - use the right EXCH call for uwind,vwind (to work on CS-grid).
375     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
376       and parameters (note: calcWindStress replaces .NOT.readwindstress).
377     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
378    
379    checkpoint58
380    o add "--embed-source" option to genmake2 which, when the supporting
381      tools can be compiled (as determined by genmake2) will turn on the
382      embed_files package which then embeds the entire MITgcm source code
383      (*.[fFhc] + Makefile) used for the build within the executable
384      - requested by CNH but off by default
385      - adds a paltry <9MB to the mitgcmuv executable in most cases
386      - only writes the output when useEMBEDSRC in eedata is true
387    o clean up 3-dim. relaxation codes:
388      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
389      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
390      * Thanks to Tom Haine for testing!
391    
392    checkpoint57z_post
393    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
394      affects output (@ truncation level) of exp. plume_on_slope ; updated.
395    o fix the pickup behavior for obcs in combination with ptracers
396    o fix a bug in ptracers_external_fields_load
397    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
398      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
399    o transfered surface NH pressure to eta field (if exactConserv).
400    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
401         and update lab_sea output.txt file.
402    o completing 3-dim. relaxation code: additional term
403         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
404      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
405      * At compile time, in "EXF_OPTIONS.h" set
406          #define  ALLOW_CLIMTEMP_RELAXATION
407          #define  ALLOW_CLIMSALT_RELAXATION
408      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
409          tauThetaClimRelax3Dim = 15552000.0,
410          tauSaltClimRelax3Dim  = 15552000.0,
411      * 3 cases:
412          1) Use a constant-in-time 3-dim. field
413          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
414          3) Real-time relax. to time-evolving prescribed field
415    o Adding Laplacian-type smoothness constraint on
416      initial and boundary (forcing) controls (ic, bc)
417      * enable at compile-time via
418        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
419      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
420      * Absolute scale somewhat unclear so far
421      * no area weighting was included since no other cost term does so far
422    
423    checkpoint57y_post
424    First step for a NLFS adjoint
425    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
426    o new init. routines for calc_r_star, calc_surf_dr
427    o still need to deal with ini_masks_etc
428    o testreport seemed happy
429    checkpoint57y_pre
430    
431    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
432    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
433    o add new offset feature to offline pkg (plus minor cleanup)
434    o cfc fixes for final year of integration
435    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
436      be in GCHEM_OPTIONS).
437    
438    checkpoint57x_post
439    o fix testreport Pb in multiple test experiment.
440    o cleanup our namelist syntax in verification:
441      - make it more F95 standards compliant (some work still needed)
442      - allows the vast majority of our tests to work with gfortran
443    o Non-Hydrostatic:
444     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
445     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
446    o Allow to apply AB on T,S rather than on AB(gT,gS):
447     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
448     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
449       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
450     - need a "clever" read_pickup to restart from the other AB formulation
451    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
452    o remove some unused variables (reduces number of compiler warnings)
453    o adjoint
454      * Disable useVariableViscosity for adjoint for time being
455        (there are a number of extensive recomputations)
456      * Initialize certain variables needed for adjoint
457    
458    checkpoint57w_post
459    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
460                 fix the singleCpuIO RS version of MDSWRITEFIELD
461       and add a WARNING if using globalFiles=T with multi-processors.
462    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
463      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
464    o tracer advection scheme:
465      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
466       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
467       was not very convenient).
468      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
469       (further tests needed for the implicit DST & Flux-Limiter schemes).
470    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
471      and sRef for convenience, handy, when you want to initialize
472      ptracers in a large domain with a constant non-zero value. Also,
473      untangle ptracers_init.F a little.
474    
475    checkpoint57v_post
476    o change dome exp. to use variable viscosity in side-drag terms.
477    o remove all the files from the cfc_offline test since they are now
478      incorporated into tutorial_cfc_offline which has been producing
479      identical results for a few days of testing
480    o add new parameter: sideDragFactor to enable half-slip-side BC
481      and change side-drag S/R to use viscosity from mom_calc_visc
482      (can switch back by setting sideDragFactor=0.); affects results at
483      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
484       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
485    o vorticity & strain are now computed without masking, to account for
486      no-slip-side BC in variable viscosity calculation ; mask is applied
487      anyway later on, before computing advection/coriolis terms.
488    o modify exp4 to test new obcs support for reading from external files
489      and for passive tracers
490    o fix behavior of ptracers_monitor when monitor output is written to a
491      netcdf-file; still not independent of monitor.F (writes in the same
492      file).
493    o change default value of tRef (put a uniform, meaningful value for ocean
494      & atmos) and initialize sRef (was missing, as Martin mentioned).
495    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
496      to be proportional to enstrophy dissipation length.  Thus,
497       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
498      This is now consistent with Smagorinsky and with the manual.
499    
500    checkpoint57u_post
501    o OBCS and PTRACERS: add open boundary support for passive tracers
502      - either use homogenous (pseudo) v.Neumann conditions or prescribe
503        OB-values from file; this is not different from the way theta and salinity
504        are treated
505      - however, Orlanski-radiation conditions are not supported, and the model
506        will stop if you use pTracers and Orlanski at the same time.
507      - beefed up the rountine obcs_external_fields_load: now only those open
508        boundary values are overwritten with values from files for which there
509        are really files, otherwise the OB-fields remain untouched. This makes
510        it possible to use different OBs at different ends of the domain (as
511        with EXF)
512    o reduce number of exch calls in shap_filt (s2).
513    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
514      truncation level) 4/5 MLAdjust test results (11&12 digits match).
515    
516    checkpoint57t_post
517    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
518    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
519      same truncation, independent of the face number: affects affects several
520      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
521    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
522      note that biharmonic viscosity + no-slip was not tested in any experiment.
523    o fix bug in non-linear free-surf side-drag ; generate new output for
524      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
525    o make mnc honor the writeBinaryPrec flag for most kinds of output
526    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
527    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
528      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
529    o add brackets in multi-terms sum to get same truncation, independent of
530      the face number (manage to get exactly same value of gU,gV at the cs-edge)
531      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
532    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
533      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
534      a maximum grid-scale Reynolds number.  Also, changes all length calculations
535      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
536      Suggested values of viscosity parameters found in mom_calc_visc.
537      Many new viscosity diagnostics available.
538    
539    checkpoint57s_post
540    o Add clearing-house for viscosity calculations, mom_calc_visc and
541      correct numerous bugs in LeithD and Smagorinsky discretizations.  
542      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
543      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
544      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
545      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
546      The Strain-Tension form is now called with useStrainTensonVisc=.true.
547      ViscAhStrain and viscAhTension are now retired.
548    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
549    o In response to JMC's bug report, genmake2 now ignores any soft-links
550      that it finds in the *current* directory when searching for files.
551      Soft-links found in any other source directories will still work as
552      they did before.
553    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
554      a C routine to unlimit the stack size
555    o mnc-ify pkg/aim snapshot vars
556    o mnc-ify pkg/land as requested by Daniel
557    o various changes to mnc including:
558      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
559      - output can now be grouped so that all files within a group
560          change the ITER portion of their names in lock-step together
561      - can now read ("global") PER-FACE (in addition to PER-TILE) files
562          and works with both EXCH1 and EXCH2 (but needs more testing)
563      - writing works for all verification test cases w/ g77 on Linux
564    
565    checkpoint57r_post
566    o make MNC variable initialization happen earlier
567    o add diagnostics for (almost) each term of the momentum Eq.
568    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
569    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
570    o remove MINIMAL_TAVE_OUTPUT option ;
571      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
572    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
573      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
574    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
575    o add time-dependent SST, SSS control
576    o cost terms in ecco/ modularized (new cost_generic.F)
577    o cost_averages routines are modularized (new cost_averagesgeneric.F)
578    o new infrastructure for seaice model vs. obs misfits in seaice/
579      * driver from the_main_loop.F is seaice_cost_driver.F
580      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
581      * gradient check in Exp. 6a of natl_box_adjoint/
582    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
583      (see README file)
584    
585    checkpoint57q_post
586    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
587    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
588      - bug was reported by Jean-Michel and Ian Fenty
589    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
590      update exp. cpl_aim+ocn output.
591    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
592      Needed for high-res. runs with large global files
593      to be able to limit tapelev size
594    o Changed some tests for adjoint:
595      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
596      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
597      * global_ocean.90x40x15/ back to default 3-level checkpointing
598    o Modifications to enable scripted COMMON to MODULE conversion
599      * verification/OpenAD/code/ has necessary scripts and description;
600      * converts, compiles and runs successfully;
601    
602    checkpoint57p_post
603    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
604    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
605      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
606    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
607    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
608      (was already the case for dissipation with mom_vecinv,
609       and also the case for grad.PhiHyd when staggered-timeStep)
610      This will allow to put dissipation out-off the AB time-stepping.
611     Unfortunately, affects truncation error. Update output of exp. that "fails"
612      (cg2d matching number) and leave the others for later: front_relax(10),
613      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
614      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
615    
616    checkpoint57o_post
617    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
618      (2) its ready to be documented during the 20050801 DocFest
619    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
620      for ideal_2D_oce and lab_sea on linux_ia32_g77
621    o set to #undef CTRL_SET_OLD_MAXCVARS_30
622      in global1x1_tot/code_seaice_adj to access indices 32, 33
623      (worth another tag)
624    
625    checkpoint57n_post
626    o adding precip control xx_precip 32
627    o adding swflux control xx_swflux 33
628    o Replacing 10 forcing penalty cost routines by 1 generic.
629    o Implementing partitioning in time-mean and variable adjustment
630      for atmos. state.
631    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
632    o in natl_box_adjoint:
633      * updated exp 1 to 10
634        (but does not have time-mean vs. variable split results yet)
635    o updated global1x1/*_seaice_adj/
636      to incorporate latest changes
637    o enable useSingleCpuIO for mdsio vector routines
638      (applies in particular to tapelev I/O)
639    o removed inefficient K-loop in all active_file*control*.F
640    
641    checkpoint57m_post
642    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
643      and advect_cs (use EXCH-2 and standard cs-32 grid files).
644    o pkg/exch2: filling of face-corner halo regions is optional
645      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
646    
647    checkpoint57l_post
648     tag before updating tutorials (pre-release-2)
649    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
650       for output and interpolation of input fields onto model grid)
651    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
652       Affects results of exp. rotating_tank ; update output.txt.
653    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
654          and taking the square quantity and/or using a fraction-weight field.
655    o fix aim_diagnostics_init.F mate numbers.
656    o add mnc output capability to diagnostics/diagstat and update
657      our cvsignore files for the ACSII output generated
658    
659    checkpoint57k_post
660    o lab_sea now uses diagnostics package and provides a suite of
661      new EXF diagnostics output.
662    
663    checkpoint57j_post
664    o exf
665      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
666        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
667        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
668      * extended diagnostics output
669        - now includes all EXF variables
670        - hs, hl moved to common block
671        - separate S/R for diagnostics, called after ctrl vector is added
672        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
673        - EXFqnet contains true Qnet (i.e. includes qsw)
674      * updated verif. lab_sea, global_with_exf
675      * Rearranging hflux (exf_mapfields -> exf_getforcing)
676        to ensure that diagnostics sees a true EXFqnet
677    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
678    o diagnostics pkg: change pointers so that 1 diagnostic can be used
679      several times with different frequencies.
680    o mnc-ify the thsice package as requested by Daniel Enderton
681      - the monitor--MNC output needs work
682      - many attributes need to be added (most are currently blank)
683    o mnc-ify theaim_v23 package as requested by Daniel Enderton
684      - many attributes need to be added (most are currently blank)
685    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
686    o add Sadourny like discretization to the 4th.O vorticity advection scheme
687    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
688      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
689         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
690    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
691     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
692    
693    checkpoint57i_post
694    o Diagnostics package was changed: diagnostic allocation is now deactivated
695      by setting an empty file name in the namelist (used to be by setting 0 frequency)
696    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
697      add 1rst Order upwind vertical Shear.
698    o add a quick fix for A/B checkpointing in OFFLINE mode
699    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
700      end-run around the C/Fortran linking horror in eesup/src/timers.F
701    o added pkg/runclock: allows user to terminate run based on wall clock
702    o added non-hydrostatic scaling parameter: nh_am2
703    o pkg/my82: futile attempt to make results compiler-independent by adding
704      some "_d 0", etc. no effect.
705    o for mnc output, fill the 'T' coordinate var with myTime and create a
706      separate 'iter' variable for iteration count
707    o pkg/diagnostics:
708      add new capability: output of Global/Regional & per-level statistics ;
709      tested against monitor output (including land & thSIce) on various exp.
710    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
711    
712    checkpoint57h_done
713      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
714      data.diagnostics, data.gchem, data.ptracers) is done.
715    
716    o pkg/diagnostics: prepare for Global/Regional statistics.
717      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
718    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
719      and rename it: DIFFERENT_MULTIPLE
720    
721    checkpoint57h_post
722    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
723    o pkg/diagnostics: change output frequency, now in seconds (instead
724      of Nb of iterations). This requires to change data.diagnostics.
725    checkpoint57h_pre
726    
727    o in mnc, let the user create the output dir if both mnc_outdir_date
728      and mnc_outdir_num are false
729    o add fflags() to pkg/diagnostics which allows one to specify, on a
730      per-file basis, the file precision [default behavior is unchanged]
731    o added diagnostics to pkg/kpp, including computation of mixed layer
732      depth based on a temperature/density criterion
733    o updated verification/natl_box to test the new pkg/kpp diagnostics
734    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
735    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
736    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
737      not mnc -- this mistake was found by JMC and is now corrected
738    
739    checkpoint57g_post
740    o add Adams-Bashforth 3rd Order time stepping:
741      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
742      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
743    checkpoint57g_pre
744    
745    o make lambda[Theta,Salt]ClimRelax spatially varying
746      (default remains spatially uniform constant based on tau)
747    o added new control variables
748      * init. uVel, vVel, etanN
749      * lambda[Theta,Salt]ClimRelax
750    o separate masks used for ctrl_pack/unpack 'from write_grid' output
751      (suggested by G. Forget)
752    
753    checkpoint57f_post
754    o add parameter "baseTime" = model base time = time at iteration zero
755      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
756      account for baseTime shift
757    o move Coriolis arrays from PARAMS.h to GRID.h
758    checkpoint57f_pre
759    
760    o mnc-ifying the seaice package
761    o introduced an alternative length scale calculation for use in the limiting
762      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
763    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
764    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
765      as well as grad(vort3).  Made it compatible with both approximate form
766      for the cubed sphere and full form of these gradients.  Added flag
767      useFullLeith to select between approximate and full form.  
768    o add "d0" in getcon.F to reduce differences between compilers/platforms
769      update output.txt of exp. fizhi-gridalt-hs
770    o change port_rand funtion to allow to set the seed.
771    o fix obscure MNC bug involving conversion between reals and integers
772      - it caused no problems with certain (eg. gcc, ifc) compilers but the
773        new version is now more standards-compliant
774    o adjoint-related modifications
775      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
776      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
777      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
778    
779    checkpoint57e_post
780    o Adding eddy stress controls a la Ferreira et al.
781    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
782    
783    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
784      update output.txt of exp. fizhi-gridalt-hs
785    o add more "Z" dimensions and associated coordinate vars to MNC
786    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
787    o parameter calendarDumps: when set, approximate months (30-31 days) and years
788      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
789      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
790      months and years.  Requires pkg/cal.
791    o diagnostics: add pickup functionality
792      - off by default for backwards compatibility
793      - current version only uses MDSIO -- MNC will be added
794    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
795    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
796    
797    checkpoint57d_post
798    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
799    o modify verification/ideal_2D_oce so that it tests the creation of mnc
800      output from the diagnostics package
801    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
802    o make genmake2 more portable by using ".$FS" instead of ".f" for more
803      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
804    o add coordinate variables to the MNC output from the diagnostics package
805    o change MNC-flags default value: true when useMNC=TRUE
806    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
807      the ability (off by default) to read the grid information using MNC
808    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
809    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
810    o do snap-shot diagnostics at the middle of the time-interval (instead of
811      at the end).
812    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
813      new test for AIM with thSIce + slab-ocean
814    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
815    o move state variable diagnostics to the beginning of the time step ;
816      (note: still needs some work specially for snap-shot diagnostics)
817      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
818    
819    checkpoint57c_post
820    o Change testing option (-ieee) to get closer agreement between g77 & ifort
821    o generate new output.txt files on faulks with g77 & the new -ieee option
822    checkpoint57c_pre
823    
824    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
825      update output.txt of exp. global_ocean.90x40x15
826    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
827      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
828    o add saltFlux(+File) forcing capability with periodicExternalForcing
829    o allow to use pkg diagnostics for GM-Redi & ThSIce output
830    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
831    o improvements for the MNC output from DIAGNOSTICS:
832      - correct handling of the unlimitied dimension
833      - all dims now have associated coordinate variables
834      - variables located at U, V, and Corner ("Z") points are now written
835        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
836        *all* data points are output
837    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
838    o added pkg/seaice/seaice_monitor.F
839    o mdsio_readfield.F can now read files visible only to master MPI process.
840    o pkg/seaice: some test code for ice-modified ocean stress
841    o exf_getffields interpolation defaults to bilinear for all scalar forcing
842      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
843      spurious negative numbers for precipitation and humidity.  Will cause
844      some small numerical differences for integrations using pkg/exf/exf_interp.F.
845    o pkg/ctrl/
846      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
847        May be enabled via doPackDiag
848      *  introduce z-scaling of
849         + gradient (doZscalePack) and
850         + control (doZscaleUnpack)
851    o pkg/mdsio/
852      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
853      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
854    
855    checkpoint57b_post
856    o simplify options in diagnostics_fill arguments (remove weird combinations)
857    o fix MNC coordinate variables so that they now contain per-face index
858      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
859      general, EXCH2 grids are only aligned to a "local" coordinate system
860    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
861    o Implement instantaneous output within pkg diagnostics:
862      setting a negative frequency in data.diagnostics produces
863     "snap-shot" output (as opposed to time-average if freq > 0)
864    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
865      NOTE: change ptracer diagnostics name: use 2 characters to work with
866            more than 9 tracers. Add also diagnostics of advect & diffus flux.
867    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
868      becomes the coordinate variable for the 'T' dimension
869    o add CF-style coordinate variables to MNC
870      - just a first cut:  numbers are meaningless on the cubesphere and
871        missing along the T axis but otherwise it works!
872    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
873    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
874    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
875      this is based directly on what the model compute, so that the content of
876      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
877    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
878    o clean up build options files for SunOS, in particular
879      - remove -traditional from xmakedepend
880      - change -xarch=v9 to -xarch=native for f77
881      - restore use of make (not gmake)
882      - add CC=gcc if using g77
883    o changes per discussion of AM, JMC, & EH3 today:
884      - move redundant "grid" variables out of "state" -- in preparation of
885        creating proper CF-style coordinate variables and in recognition
886        that any/all grid variables can be easily copied (eg. w/NCO) from
887        the grid files into any of the other NetCDF files
888      - *always* output grid variables with MDSIO (this will eventually be
889        changed)
890      - output MNC grid file if useMNC is true
891    o every instance of _END_MASTER() has been found and replaced with
892      _END_MASTER( myThid ) in order to satisfy certain picky Sun
893      preprocessors
894    o re-arrange diagnostics pkg initialisation:
895     - allow each package to extend the available diagnostics list
896     - add some checking and fix small problems (multi-threaded, ...)
897     - new S/R diagnostics_fill (replace fill_diagnostics):
898       look through the short list of active diag. (instead of the long list)
899       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
900    
901    checkpoint57a_post
902    o this set of changes restores TAMC compatibility
903      tested for global_ocean.90x40x15 adjoint on trough
904      (what a pain)
905    
906    checkpoint57a_pre
907    o some modifs in tools/build_options for sunos
908    o call ctrl_pack for ctrl at end for optimcycle=0
909    
910    checkpoint57
911    o add horizontal bi-harmonic viscosity for vertical velocity
912      - new parameter viscA4W (defaults to viscA4)
913      - affects only non-hydrostatic code
914      - to be done: no-slip lateral boundary conditions
915    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
916    o implement Implicit Vertical advection for pTracers
917    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
918      (implemented also for implicit vertical diffusion & advection)
919    o OBCS: extend application of tracer open boundary conditions
920      to a strip beyond the boundary of width Olx/Oly
921    o add call monitor to TAF set of required calls (flow directives)
922      and include in natl_box_adjoint
923    o untangle a few ifdefs related to cost, ctrl, autodiff
924      untangel a few ALLOW_ECCO_OPTIMIZATION
925    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
926      (theta2, salt2 in ecco_cost_weights)
927    
928    checkpoint56c_post
929    o OBCS as control variables
930      - update ctrl_ad_diff.list, obcs_ad_diff.list
931      - remove balance of obcs controls from default
932      - fix index bug nobcs in ctrl_init
933      - fix dummy fields filen in ctrl_pack
934      - add dummy weights for obcs
935    o lsopt: comment out fort.94 output
936    o optim:
937      - remove unnecessary header files
938      - adjusted namelists
939      - add xerbla.F to Makefile
940    o exf:
941      - multiple modifications of exf_check_range
942      - unit change in exf_init_runoff from [m/year] to [m/s]
943    o mdsio:
944      - i/o-vector change debugLevel from debLevA to debLevB
945    
946    checkpoint56b_post
947    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
948      is called from DO_THE_MODEL_IO
949      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
950      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
951      - clean up PTRACERS_WRITE_TIMEAVE a little
952    o add another verification experiment that tests both the cfc-pkg and
953      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
954      reactive tendencies treated inline with regular timestepping
955    o testreport previously did a lousy job of comparing small numbers, so
956      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
957      implemented in the little c-progam tmp_cmpnum.c which is embedded in
958      testreport.
959    o ptracers_monitor: bug fix for MPI
960    
961    checkpoint56a_post
962    o GCHEM: finish reorganizating the package
963      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
964        (introduces another 3D-array for each passive tracer, but only if
965        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
966        gchemTendency is not needed because the timestep is done separately)
967      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
968      - GCHEM is now---more or less cleanly---separate from PTRACERS
969      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
970        so clear to me how that should be done in a general way.
971    o CFC: improve formatting of output in CFC_ATMOS
972    o PTRACERS:
973      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
974        that ALL experiments with ptracers enable can be checked. This makes
975        GCHEM_MONITOR obsolete.
976      - include a runtime parameter PTRACERS_monitorFreq that defaults to
977        monitorFreq
978      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
979    o add PTRACERS (PTR0[1-5]) to testreport output
980    o exf_check_range:
981      * default changed to .TRUE.
982      * will check values for niter0 if debLevA, every timestep if debLevB
983      * STOP in exf_check_range if 'out of range'
984      * range chosen generous to allow for potential extema
985      TBD: a version with stricter range
986           permitted range would be runtime parameters
987    o GMredi:
988      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
989      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
990      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
991    o GCHEM:
992      - move call to GCHEM_FORCING_SEP, so that it is now called before
993        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
994      - introduced a useGCHEM runtime flag and applied it everywhere.
995      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
996        this flag is now only visible within GCHEM-pkg routines.
997      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
998        be replaced by a 3D array that is computed before thermodynamics; for
999        this, the tracer ID iTracer had to be included into the parameter list
1000        of ptracers_forcing
1001      - set up forward_step to call gchem_forcing, that will replace
1002        gchem_forcing_int in ptracers_forcing
1003      - cleaning up
1004    o small cleaning of exch2: remove files that are also in eesupp/src
1005    
1006    checkpoint56
1007    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
1008    o mnc: cleanup "full" files--fixes out-of-memory problem
1009    o ECCO-GODAE
1010      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
1011      * fully merged and updated from SIO code
1012        windstress sign change affects
1013        - exf_inscal_[u/v]stress
1014        - sign of xx_tau[u/v] adjustments
1015        - signs in cost_scat
1016      * ctrl_get_gen: avoid update of tau[u/v] for first few days
1017      * natl_box_adjoint updated and compressed
1018      * 2-level checkpoint switch added
1019        (tested in EXP. 1 of natl_box_adjoint)
1020      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
1021    o SVD
1022      * first complete, non-hacked version for SVD calculations
1023      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
1024        performed via direct access files admtlm_vector.it????
1025        (via ctrl_[un]pack)
1026      * optimcycle is used for ARPACK iteration counter
1027        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
1028      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
1029        and add linear transforms where necessary
1030      * controls are initial/final SST, SSS (can be extended; need to check
1031        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
1032    o mdsio: filename info to both stderr, stdout
1033    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
1034      from sign change
1035    
1036    checkpoint55j_post
1037    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
1038      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1039    o add consistent build directories and .cvsignore files to verification
1040    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
1041    o make all subroutines 30 or less characters in length for certain older
1042      compilers to work (a thorough search only turns up two routines in
1043      pkg/ptracers)
1044    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
1045      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1046    
1047    checkpoint55i_post
1048    o change arrays for total vertical diffusivity (2.D if explicit,
1049      3.D if implicit) ; each ptracer uses its own background value.
1050    o added mnc/NetCDF output capability to ocn_compon_interf
1051      - added bits to verification/cpl_aim+ocn so that it can run on
1052        ITRDA and other clusters without the mpirun "-wd" option
1053    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
1054      configuration
1055    o give MNC the ability to create additional files rather than
1056      exceeding a specified file size limit "MNC_MAX_FILESIZE"
1057      - the default is just less than 2GB which is a practical limit
1058        on many systems
1059    o Compute the non-local term using either KPP vertical diffusivity (=default)
1060       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
1061    
1062    checkpoint55h_post
1063    o add verification test "vermix"
1064    o remove all the *_ioinc flags and replace with the single global
1065      outputTypesInclusive flag
1066    o allow to set a vertical profile of vertical diffusivity for T & S
1067    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
1068    o useMNC moved from data.mnc to data.pkg
1069    
1070    checkpoint55g_post
1071    o Renaming carbon AD experiments to comply with testreport conventions
1072    o Updating adjoint of Held-Suarez hs94.1x64x5
1073    o Fixing directives for non-ECCO forward_step, after ECCO directives
1074      have been fixed to avoid recomp. of do_oceanic_phys
1075      Works well for global_ocean.90x40x15,
1076      but recomp. issue remains for carbon
1077    o Updating adjoint output for natl_box_adjoint after
1078      pkg/ecco has been modified (see taga c55d_post)
1079    
1080    checkpoint55f_post
1081    o rename to timeave_init_fixed
1082    
1083    checkpoint55e_post
1084    o some delicate re-shuffle of store directives to avoid one
1085      extra call of do_oceanic_physics
1086      affects ecco_the_main_loop.F, do_oceanic_physics.F
1087      checkpoint_lev1_directives.h
1088    o NB: this may break global_ocean adjoint temporarily,
1089      but it is clear how to fix it. Will do later, need this now.
1090    
1091    checkpoint55d_post
1092    o ECCO specific cost function terms (up-to-date with 1x1 runs)
1093    o ecco_cost_weights is modified to 1x1 runs
1094    o modifs to allow observations to be read in as
1095      single file or yearly files
1096    o enable to read exf forcing fields as either
1097      single file or yearly files (flag useExfYearlyFields)
1098    checkpoint55d_pre
1099    
1100    o switch between 2-level and 3-level checkpointing
1101    o add ability of MNC to write local and "partial" (eg. 2D slices where
1102      the full 3D field is never actually stored) arrays to NetCDF files
1103      with the correct (that is, the complete multi-dimensional) set of
1104      array indicies
1105      - used in mom_vecinv() to write the diagFreq output
1106      - tested (demonstrated) in verification/aim.5l_cs
1107    o further mnc-ification
1108      - add verification/lab_sea to the list with mnc setups
1109      - fix undefined mnc v-names in cd_code
1110      - add kpp to mnc output (both snapshot and timeave)
1111    o non-hydrostatic code
1112      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
1113        in calc_gw.F
1114      - defaults to viscAh
1115      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
1116        friction or Leith) in non-hydrostatic mode, as long as there is
1117        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
1118    o pkg/cost
1119      extend simple cost functions to treat time mean quantities
1120      (T,U,V) via cost_accumulate_state from cost_tile
1121    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
1122        be 2 times larger than the minimum size the advection scheme requires.
1123        now get a perfect conservation of salt in advect_cs test-exp (updated)
1124    o GGL90 (Gaspar's TKE mixed layer)
1125      - add horizontal diffusion of TKE, requires exchanges in
1126        do_fields_blocking_exchanges, horizontal diffusivity is zero by
1127        default. In OPA there is no horizontal diffusion of TKE but the
1128        mixing coefficients are computed from a horizontal average of TKE of
1129        6 points or so. I think that diffusion has a little more physical
1130        justification.
1131      - clean up ggl90_calc in the hope of reducing memory usage (this hope
1132        was in vain)
1133      - mask tke-variable in ggl90_init
1134    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
1135    o fix biharmonic diffusion on CS-grid.
1136    o more obcs stuff
1137      - added obcs_external_fields_load as an alternative to the EXF-pkg option
1138        for reading boundary values. This routine is called from
1139        obcs_prescribe_read
1140      - updated obcs_check
1141      - changed sponge layer relaxation parameter units for days to seconds
1142      - turned off sponge layer by default
1143      - changed argument list of OBCS_CALC to myTime+deltaTclock
1144      - fixed about 35 bugs in obcs_external_fields_load
1145    
1146    checkpoint55c_post
1147    o obcs stuff
1148      - new runtime flags useOBCSprescribe, useOBCSbalance
1149      - re-arranged obcs_calc
1150      - moved exf_getobcs to obcs_prescibe_read
1151        obcs_prescibe_read is called after ORLANSKI stuff
1152        and independent of it (executable can contain all).
1153      - updated obcs_check
1154      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
1155        These may be necessary only if tangential velocities are
1156        prescribed at OB, not sure, needs testing.
1157    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
1158      which simplifies the calls and passes the ifc check-bounds test
1159    
1160    checkpoint55b_post
1161    o add a 2D scalar, Z location, exchange_2 routine.
1162    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
1163      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
1164      affects advect_cs results (for the wrong reason): update output.txt
1165    o use a more standard discretization for biharmonic viscosity ;
1166     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
1167      affects results of dome set-up: update output.txt
1168    o fix gad_advection.F (CubedSphere part), back to version 1.23
1169    o fix bug in mom_vi_del2uv.F (CubedSphere part).
1170    
1171    checkpoint55a_post
1172    o merged code to
1173      * prescribe/read time-dependent open boundaries
1174        (works in conjunction with exf, cal)
1175      * sponge layer code for open boundaries
1176      * each boundary N/S/E/W now has its own CPP option
1177        (healthy for the adjoint)
1178    
1179    checkpoint55
1180    o up-to-date adjoint of previous breaks
1181      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
1182      - global_ocean_ebm: adjoint still needs fix (TLM ok)
1183      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
1184      - carbon: * remove tr1-related adjoint verification
1185                * add ptracer as control variable
1186    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
1187      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
1188    
1189    checkpoint54f_post
1190    o in verification/carbin/ remove experiment related to
1191      ALLOW_PASSIVE_TRACER (array tr1 etc)
1192      code_ad/ input_ad/ results_ad
1193    
1194    o add two new packages
1195      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
1196        + subject to optimization (memory)
1197      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
1198        + subject to reordering (many GOTOs in the original code)
1199        + so far opps is called for every (i,j) point, and then operates in
1200          the vertical; one may want to reorder the scheme in order operate in
1201          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
1202          fields)
1203    o overhaul of IO so that we now have flags for MDSIO and/or MNC
1204      - all verification tests compile and run with linux_ia32_g77
1205      - defaults are compatible with current input files--nothing
1206        should change if you were not previously using MNC
1207      - MNC output has been added in numerous places (eg. timeave)
1208        but there are still a few writes not yet do-able with MNC
1209        (this is in progress)
1210      - flags now allow for either/or/both use of MDSIO and MNC and
1211        documentation will soon follow
1212      - numerous small formatting cleanups for ProTeX
1213    o add version info (via BUILD_INFO.h) to MNC and stdout
1214    
1215    checkpoint54e_post
1216    o add two new packages
1217      - pp81 (Packanowski and Philander, 1981), Richardson number and
1218        stratification dependent mixing
1219      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
1220      - these scheme operate in a similar manner as KPP (without ghat, of
1221        course), however there is only one diffusivity that is used for both
1222        temperature and salinity (and passive tracers)ç
1223    o add offline package
1224    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
1225      provided by Stephanie Dutkiewicz
1226    o genmake2: add ability to search for C compilers and cleanup test output
1227      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
1228    
1229    checkpoint54d_post
1230    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
1231    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
1232      leading to additional shift by 5 days each year of integration
1233       (i.e. leading to considerable offset over the years)
1234    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
1235    o start with no AB and no initial filtering (staggerTimeStep):
1236      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
1237    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
1238      (external loading & cpl import/export stay in forward_step.F)
1239    o update coupling interface to work with new staggerTimeStep
1240    o change MDSIO ptracers_pickup.
1241    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
1242    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
1243    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
1244    
1245    checkpoint54c_post
1246    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
1247      this affects (truncation error) output.txt of test-exp:
1248       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
1249    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
1250    o change Qnet to always be the net heat flux, (+upward).
1251      affects (truncation error) output of natl_box exp.: updated
1252    o define the max number of passive tracers in PTRACERS_SIZE.h
1253    o start to test mnc routinely in exp0
1254    o add sea-ice loading (sIceLoad) as a new forcing field.
1255    
1256    checkpoint54b_post
1257    o add testreport "-j JOBS" option for parallel builds (tested and pretty
1258       impressive on Altix and Opteron systems)
1259    o diagnostics can now write NetCDF files through the mnc package
1260    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
1261    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
1262    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
1263      affects (truncation error) output of lab_sea & natl_box exp.: updated
1264    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
1265    
1266    checkpoint54a_post
1267    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
1268    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
1269    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
1270    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
1271      + internal_wave (shift in writing cg2d_ini_res)
1272    checkpoint54a_pre
1273    
1274    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
1275      - modified verification/lab_sea and natl_box_adjoint accordingly
1276    
1277    checkpoint54
1278    checkpoint53g_post
1279    o prepare splitting of thermodynamics: store convect.counter in common block
1280    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
1281      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
1282    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
1283    o new parameter "nShapS": allow to treat differently S from T (nShapT)
1284    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
1285    o restore adjointability
1286    
1287    checkpoint53f_post
1288    o modifications that affect AIM experiment results (update output.txt):
1289      - no advection of S at top interface Nr (pkg/generic_advdiff)
1290      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
1291    o AIM pkg:
1292      - include stability function into surf.Flux derivative relative to Tsurf
1293      - calculate clear-sky radiation & surface temp. change (for diagnostics)
1294    
1295    checkpoint53e_post
1296    o merged cylindrical coord configuration
1297    o added rotating_tank experiment
1298    checkpoint53e_pre
1299    
1300    checkpoint53d_post
1301    o faulks upgraded: re-generate output.txt that have changed:
1302       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
1303    o Added Bryan and Lewis, 1979, vertical diffusivity profile
1304    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
1305    o added Sadourny discretization of Coriolis
1306      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
1307      - re-enabled use of omega3 (useAbsVorticity)
1308    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
1309      vector-invariant equations
1310      - note: does *NOT* yet use same variable visc. for no-slip BC's.
1311    o recoded the lateral boundary conditions for non-hydrostatic w, this time
1312      hopefully without new bugs
1313      - still to do: biharmonic friction for non-hydrostatic w
1314    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
1315    o regenerated output for global_ocean_ebm (using -ieee)
1316    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
1317      of mom_common/
1318      - simple re-arrangement of instructions within computing loop
1319    checkpoint53d_pre
1320    
1321    checkpoint53c_post
1322    o new version of coupler for AIM+thSIce and Ocean models
1323     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
1324     - land: change Evaporation of snow
1325     - aim with thSIce: fix bug in snow-precip.
1326    o changes to calc_gw.F
1327     - bug fix for w^2 term near the bottom boundary
1328     - (hopefully) improve the lateral slip boundary condtions for use with
1329        partial/looped cells
1330      - because the bug fix changes two verification experiments anyway (exp5
1331        and plume on slope), change the lateral boundary condition from half slip
1332        to the value of no_slip_sides
1333    o ebm package wasnt quite up to the parallel task. Fixed that.
1334    o Adjoint of EBM package + verification
1335      * TLM OK
1336      * ADM not sufficient accuracy yet (needs further testing)
1337    
1338    checkpoint53b_post
1339    o Commiting new energy balance model to repository
1340      * package is pkg/ebm
1341      * verif. is verification/global_ocean_ebm
1342      * references are in ebm_driver.F
1343    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1344    C        Global thermohaline circulation. Part I:
1345    C        Sensitivity to atmospheric moisture transport.
1346    C        J. Climate 12(1), 71-82
1347    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1348    C        Global thermohaline circulation. Part II:
1349    C        Sensitivity with interactive transport.
1350    C        J. Climate 12(1), 83-91
1351    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
1352    C        Destabilization of the thermohaline circulation
1353    C        by atmospheric eddy transports.
1354    C        J. Climate 7(12), 1870-1882
1355    o Will need long integration testing.
1356    checkpoint53b_pre
1357    
1358    o created pkg/mom_common in preparation for variable viscosity code
1359    o renamed and split ini_mnc_io
1360    o pkg/land: only liquid water can diffuse or run-off
1361    o AIM using land: soil wetness availability account for snow
1362    o added printMapIncludesZeros to EEPARMS namelist
1363    
1364    checkpoint53a_post
1365    o restore TAMC compatiility for exf_constants.h
1366      (no usage of _d in .h)
1367    o Additional storing in KPP in an attempt to fix
1368      TAMC problem with adjoint of KPP code.
1369      (no success...)
1370      Identical code works fine with TAF.
1371    o Fixed verification/natl_box_adjoint experiments.
1372      Initial conditions for Experiments 4 and 5 are now
1373      set to "SEAICE_initialHEFF=0", which is more reasonable,
1374      and hence gives results closer to that of Experiment 2.
1375      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
1376    
1377    checkpoint53
1378    o stable checkpoint with up to date adjoint
1379      TLM tests only run for 1st grdchk at the moment. Its unclear if
1380      this is a code problem or a problem with resetting code for g_
1381      variables that is being autogenerated wrong.
1382      Otherwise:
1383       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
1384       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
1385         are both still in chaos following their security messes.
1386    
1387    checkpoint52n_post
1388    o various build (mostly genmake2) changes including:
1389      - ability to build/run more easily within Cygwin and MacOS X
1390      - more complicated Makefiles with a stronger dependence on Gnu Make
1391    o pkg/seaice modifications
1392      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
1393        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
1394        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
1395      - changed proxy for geostrophic velocity and updated
1396        verification/lab_sea/results/* accordingly
1397      - removed ADI dynamic solver from pkg/seaice
1398      - replaced all occurrences of 1/CSTICE or 1/CSUICE
1399        they caused a segmentation fault under certain circumstances
1400      - removed unused field WATR
1401    o bug fix in exf-package:
1402      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
1403         now reflect that.
1404    o small fixes in the cal-package:
1405      - set reference date to first of January for the 'model'-calendar
1406      - failing of cal_CheckDate in cal_FullDate now actually results in a
1407        warning
1408    o small modifications in exf-package to increase flexibility:
1409      - change climtempfreeze from a constant to a runtime parameter that
1410        is specified in data.exf_clim (default = -1.9)
1411      - introduce runtime parameter windstressmax (default = 2.0) that is
1412        specified in data.exf
1413    o fix in pkg/thsice:
1414      - update Evap (Tsf changes) to be consistent with Latent heat flux
1415      - maintain snow precipitation unchanged (even if Tsf >=0).
1416     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
1417    
1418    checkpoint52m_post
1419    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
1420      this does not change any of the results, because myIter=0 in swfrac always
1421      lead to jwtype=2 (the default anyway), but the call makes little sense
1422      as a default
1423    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
1424    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
1425      atmospheric model (AIM) to use it ; add a "slab ocean" component.
1426    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
1427    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
1428    o extending useSingleCpuIO option to work with new exch2 I/O format
1429      - old-style, missing-tile I/O is still accessible by defining CPP
1430        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
1431    o monitor package can write to NetCDF files and/or STDOUT
1432    o fix re-definition bug in MNC_GRID_INIT_ALL()
1433    o doc/api_reference added
1434      - a framework for building an API Reference Manual using all
1435        the "protex" comments embedded in the code
1436      - see pkg/generic_advdiff, pkg/mnc for examples
1437    o MNC:
1438      - make myThid the last argument for all subroutines
1439      - new default for the grid files: NO halos
1440      - add useMNC and other run-time flags
1441      - separate per-file-group handling of the unlimited dimension
1442      - early initialization of MNC w/ flags read at the eeboot stage
1443        and lookup tables set in initialize_fixed
1444      - write all MNC output to a freshly-created directory
1445    o thermodynamics sea-ice (thsice) is now tested with testreport.
1446    o test exp. advect_cs: use the standard cs32 grid ; update output.
1447    o Added functionality to grdchk:
1448      pick global i,j,k position (or nearest wet) where to perform check.
1449    
1450    checkpoint52l_post
1451    o new land formulation:
1452      a) use ground enthalpy as prognostic variable to ensure exact
1453         energy conservation.
1454      b) account for water temperature and for latent heat of freezing
1455         in all processes (rain, run-off, ground storage)
1456      c) compute surface and ground temperature implicitly.
1457    o aim_v23 modification for new land model:
1458      a) Treat separately land / ocean / sea-ice surface fluxes
1459         to allow implicit computation of land & sea-ice surface temp.
1460      b) add snow precipitation.
1461    checkpoint52l_pre
1462    
1463    o fix problem (when 1 tile is empty) in min/max monitor.
1464    o fix bug in timeAve (u,vZetatave in common block)
1465    o no restoring terms under ice for pkg/seaice
1466    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
1467    o bug fix for pkg/seaice pickups
1468    o change MNC call locations and add coordinate attributes
1469    o mask vorticity at the corner ; affects global_ocean.cs output
1470    o fix ini_curvilinear_grid ; test CS experiments with mpi
1471    o aim.5l_cs: modify sea-ice fraction input file ; update output
1472    o exf: Adding simple range check routine for exf fields after read
1473    
1474    checkpoint52k_post
1475    o removed top-level directory "diags"
1476      - we migrated these functions to pkg/timeave a long time ago
1477    o fixed bug introduced in pkg/monitor
1478    o accuracy ctrlprec = 32 insuffient for gradient checks using
1479      averaged fields (I/O via cost_averages)
1480      -> use ctrl.h in active_file*.F to control I/O precision.
1481    o paramter list of CALL ADTHE_MAIN_LOOP
1482    o added initial do_the_model_io to ecco
1483    o set all ...Freq to zero after cost_final
1484      taveFreq, dumpFreq, pChkptFreq
1485    o MAIN and ECCO differentiability restored
1486    
1487    checkpoint52j_post
1488    o fix nchklev in tamc.h for global_ocean...
1489    o Bringing flow and store directives up-to-date
1490    o Really weird thing!
1491      call do_the_model_io from the_main_loop with parameters
1492      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
1493      TAF places a faulty re-call of initialise_varia
1494      after cost_final call which should not be there!
1495    checkpoint52j_pre
1496    
1497    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
1498      error messages
1499    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
1500    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
1501      debug output
1502    o modfied mdsio_writefield.F to handle non-global files under exch2
1503    o update AIM Cubed-Sphere exp (aim.5l_cs):
1504      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
1505    o update AIM Equatorial Channel exp:
1506      use standard aim_v23 pkg and change the SST fields to be more realistic.
1507    o globalFile now works with exch2
1508    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
1509      mon_vort3.F to make exch2 friendly with >1 tile per cube face
1510    o limit timeave output for hi-res integrations
1511    
1512    checkpoint52i_post
1513    o removed CPP_EEOPTIONS.h from verification/*/code
1514    o updated the tiling for global_ocean_pressure
1515    checkpoint52i_pre
1516    
1517    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
1518      the old pkg/aim).
1519    
1520    checkpoint52h_pre
1521    o shortened offending lines in exch2_send_rx?.template
1522    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
1523    o genmake2: add build & execute test for NetCDF code
1524    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
1525      old grid files, moved CPP_EEMACROS.h to pkg/exch2
1526    o added useSingleCPUIO flag to monitor.F and mon_out.F
1527    o added temporary hack for sea-ice dynamics on the cube:
1528      metric terms are ignored and it is assumed that
1529      there is no sea-ice on cube faces 1, 2, 4, and 5.
1530    
1531    checkpoint52f_post
1532    o added exch2 cube routines to pkg/exch2
1533    o modified hs94.cs-32x32x5 to use it
1534    o added new grid files to hs94.cs-32x32x5
1535    checkpoint52f_pre
1536    
1537    checkpoint52e_post
1538    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
1539      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
1540    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
1541      to work with implicit vertical advection and AB ;
1542    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
1543    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
1544     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
1545    checkpoint52e_pre
1546    
1547    o fix bug in impldiff when Nr=1 or Nr=2.
1548    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
1549    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
1550    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
1551      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
1552    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
1553    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
1554    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
1555    
1556    checkpoint52d_post
1557    o re-tiled many expts to allow comparison in multi-processor mode
1558      - updated output accordingly
1559      - changed hs94.128x64x5 to use intial T from file rather than use the
1560        random number generator
1561    o add infrastructure in model routines for fizhi and gridalt packages
1562    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
1563    o changes to permit hi-res, cubed-sphere, configuration
1564      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
1565      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
1566      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
1567        of surface winds for the cube
1568      (A verification experiment, based on global_ocean.cs32x15, but with
1569       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
1570       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
1571       complete with example surface forcing files and matlab scripts to look
1572       at the output and compare it with that of global_ocean.cs32x15.)
1573    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
1574       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
1575       to conform to the common rule.
1576    o check-in the first version of the coupler + interfaces for multi-components
1577       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
1578       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
1579       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
1580       - ocean and atmos. share the same horizontal grid (no interpolation).
1581       - exchanges between component and coupler is done in forward_step
1582    o new verification experiment, cpl_aim+ocn:
1583       coupled ocean - AIM atmosphere on cs32 grid.
1584    
1585    checkpoint52d_pre
1586    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
1587    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
1588    
1589    checkpoint52c_post
1590    o Fixing OPTIONS files for use of exf:
1591      - ALLOW_ECCO not needed
1592      - ECCO_CPPOPTIONS.h should not be included from
1593        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
1594        as has been the case in the past
1595      - All cal/exf related options are currently set in
1596        single header file. Should remain so until we
1597        agree on a consistent new policy.
1598    o Removed all CPP options for cal package.
1599      cal has no more CPP options.
1600    o modified STOREs in GAD_ADVECTION
1601    o corrected key comp. for passkey
1602    
1603    checkpoint52b_post
1604    o new version: "thsice" of thermodynamic sea-ice pkg:
1605     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
1606     - modify fluxes but do not change theta directly;
1607     - light cleaning of bulk_force pkg (still needed with thsice).
1608     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
1609       + output_thsice.txt to test thsice & bulk_force pkgs.
1610    o put back grid & coriolis monitor output.
1611    checkpoint52b_pre
1612    
1613    o call "do_the_model_io" at the beginning (=> dump initial state)
1614    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
1615    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
1616      (need info on NUMBER_OF_PTRACERS)
1617    o missing PTRACERS headers in some routines
1618    o default tamc.h in pkg/autodiff supposed to crash
1619      to ensure proper customization
1620    
1621    checkpoint52a_post
1622    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
1623      - moved surfaceTendencyTice from pkg/seaice to main code
1624      - subroutine FREEZE_SURFACE now limits only surface temperature
1625        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
1626        => new output.txt for global_ocean.cs32x15 & global_with_exf
1627      - keep the old version of FREEZE for backward compatibility;
1628        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
1629      - corresponding modifs for TAF directives
1630    o added surface flux output variables to TIMEAVE_STATVARS
1631    o time-averaged output for pkg/ptracers
1632    o fix problem with ECCO-related divided adjoint
1633      snapshot file was missing some ad-variables,
1634      but no warning issued by TAF
1635    
1636    checkpoint52a_pre
1637    o some bug fixes for #undef REAL4_IS_SLOW
1638    
1639    checkpoint52 = ecco_c52_e35
1640    o after testing adjoints of checkpoint51u_post
1641    
1642    checkpoint51u_post
1643    o this is the post-merge tag of the ecco-branch
1644      (needs another clean checkout and re-testing)
1645    o various natl_box_adjoint configs and results
1646      but no input fields
1647    o obcs adjoint not yet merged!
1648    o adding ECCO global 1x1 and 2x2 degree configs
1649    o updated/extended some store directives for seaice
1650    o pkg/ecco now containes ecco-specific part of cost function
1651    o top level routines the_main_loop, forward_step
1652      supersede those in model/src/
1653      previous input data.cost now in data.ecco
1654      (new namelist ecco_cost_nml)
1655    o in ctrl/ cleaned some cross-dependencies and updated CPP options
1656    
1657    checkpoint51t_post
1658    o this is the pre-merge tag of the ecco-branch
1659    
1660    checkpoint51s_post
1661    o cleanup: removed various obsolete #define-s
1662    o pkg/grdchk
1663      - renamed 'ph-grd 3' to 'grad-res'
1664      - merged from ecco-branch
1665        (remaining bug fixes for obcs gradient checks)
1666      - additional high-precision output for testreport
1667        (grep for 'precision_grdchk_result')
1668    
1669    checkpoint51r_post
1670    o cleaned up or removed CPP_OPTIONS.h files
1671    o updated results for some of the tests to reflect the new
1672      optfiles (-ieee: -O0 instead of -O3)
1673    
1674    checkpoint51q_post
1675    o cd_code:
1676      - moved cd_scheme.F -> cd_code_scheme.F
1677      - separate read_checkpoint from cd_code_ini_vars.F
1678      - separated cd_code part from write_checkpoint
1679      - updated AD_SOURCE, generated .flow
1680      - added CD_CODE_VARS.h to the_main_loop
1681      - Moving cd_code specific store dir.s to pkg/cd_code
1682    o ctrl package totally restructured
1683      - pack/unpack now optional and decoupled from
1684        xx_/adxx_ I/O
1685      - ctrl_pack/unpack cleaned
1686        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
1687      - confined inclusion of AD_CONFIG.h to where necessary.
1688    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
1689    
1690    checkpoint51p_post
1691    o create initial cd_code package
1692      - WARNING: the initialization of fields within packages
1693        is broken because INI_FIELDS (where READ_CHECKPOINT is
1694        called) is called *before* PACKAGES_INIT_VARIABLES.
1695        This seems to be backwards since
1696        1) its important to initially zero the entire field including
1697           the "halo" region
1698        2) zeroing needs to be done *before* reading pickup info
1699           and the pickup call might or might not happen in any
1700           particular run
1701      - this needs an overhaul for R2
1702    o cleanup verification/*/code/GMREDI_OPTIONS.h
1703    o cleanup testreport
1704    
1705    checkpoint51o_post
1706    o bringing AD-related verif's up to date with genmake2
1707      - carbon/
1708      - global_ocean.90x40x15/
1709      - hs.94.1x64x5/
1710      - (front_relax/ )
1711    o (more) consistent directory structure for AD-related verif.'s
1712    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
1713    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
1714    o bug fix in find_alpha.F for MDJWF:
1715      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
1716        change rho -> rho-rhoConst
1717      - replace call find_rho to find_rhonum
1718    o initialisation of rFlx extended to full array (required by TAF)
1719      and shifted to thermodynamics
1720    o removed PTRACERS.h in ptracers routine
1721    o added surfacetendencyPtr to S/R parameter list pracers_forcing
1722    o Correcting initialisations for fVerU, fVerV.
1723    o helping TAF to recognize dependency on kUp for
1724      fVerU, fVerV
1725    o Replacing delZ by delR in pkg/ctrl/
1726    checkpoint51o_pre
1727    
1728    o undid all of cp51 pending some cleanups and discussion
1729    o added the [#include "AD_CONFIG.h"] statement to all files that need
1730       it for adjoint/tl #defines
1731     o re-worked the build logic in genmake2 to support AD_CONFIG.h
1732     o removed tools/genmake since it no longer works
1733    
1734    checkpoint51n_post
1735    o modifications to make FREEZE flux visible to pkg/kpp
1736      - moved surfaceTendencyTice from pkg/seaice to main code
1737      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
1738      - subroutine FREEZE now limits only surface temperature
1739        (this means new output.txt for global_ocean.90x40x15,
1740         global_ocean.cs32x15, and global_with_exf)
1741    o added surface flux output variables to TIMEAVE_STATVARS
1742    
1743    checkpoint51n_pre
1744    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
1745    o added [#include "AD_CONFIG.h"] to all files that use the following
1746      defines:
1747      - ALLOW_ADJOINT_RUN
1748      - ALLOW_TANGENTLINEAR_RUN
1749      - ALLOW_ECCO_OPTIMIZATION
1750    
1751    checkpoint51m_post
1752    o incorporating changes to get TAMC/TAF working in genmake2
1753      - added new TAMC/TAF targets to the Makefile
1754      - various cleanups related to package handling
1755      - these changes should have no impact on the forward model
1756    
1757    checkpoint51l_post
1758    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
1759     - faster algorithm for cal_addtime.F
1760     - higher precision arithmetic, where needed
1761     - pkg/exf *startdate variables changed from calendar date to
1762       model integration time
1763    
1764    checkpoint51l_pre
1765    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
1766    o enable to apply restoring on S & T only in a latitude band.
1767    o update output (external_forcing_surf modif. change truncation errors)
1768       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
1769    
1770    checkpoint51k_post
1771    o change default to: useNHMTerms=.FALSE.
1772     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
1773       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
1774     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
1775        exp1, ideal_2D_oce
1776     - change data file of oceanic exp (leave the results unchanged for now)
1777       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
1778    o set gravitySign automatically according to the vertical coordinate used
1779      (and change sign: back to "logical" value: +1 when R increases downward)
1780    o added an include barrier to the default CPP_OPTIONS.h and
1781      removed the #include "PACKAGES_CONFIG.h" from it
1782    o fix a bug in mom_fluxform (from chk51j_post)
1783    
1784    checkpoint51j_post
1785    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
1786    o adjusted some flow directives (dynamics, thermodynamics)
1787    o added cubed-sphere case to test cost function
1788    o heckpoint_lev?_directives.h now include
1789      pkg-specific directives, whenever those are enabled.
1790    o Moving pkg-specific flow directives to corresponding pkg
1791      Moving pkg-specific differentiation list to corresponding pkg
1792      Moving pkg-specific checkpoint-lev storing to corresponding pkg
1793      ---> conventions are
1794           - pkg_ad.flow
1795           - pkg_ad_diff.list
1796           - pkg_ad_check_lev?_dir.h
1797    
1798    checkpoint51i_post
1799    o merge of the branch-genmake2
1800      - knowingly breaks the older genmake
1801      - automatic generation of all ALLOW_${PKG_NAME} defines
1802      - new testreport supersedes older testscript
1803    o large number of package inclusion and header cleanups
1804    checkpoint51i_pre
1805    
1806    o new output for adjoin of global ocean vector invariant
1807    o fix for checkpoint of thermodynamic seaice and bulk_force
1808    o Steph gchem various cleanups
1809    
1810    checkpoint 51h_pre
1811    o fixed some single quotes
1812    o modify gchem pkg to be more versatile
1813    o modifications to clean up dic pkg
1814    o add pkg/cfc
1815    
1816    checkpoint51g_post
1817    o provide links for ARPACK and ADM*TLM
1818    o start removing verification/vero/
1819    o update AD-related stuff
1820      (in particular some IF-statements in model/src/ routines)
1821    o adding to verification/global_ocean.90x40x15/ adjoint of
1822      vector invariant setup
1823    
1824    checkpoint51f_post
1825    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
1826    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
1827      of tracer Green's fucntions for ocean inversion project.
1828    
1829    checkpoint51f_pre
1830    o Added on-the-fly spatial interpolation capability
1831        "USE_EXF_INTERPOLATION" to pkg/exf.
1832      - This is a temporary Cartesian-grid hack until
1833        the super-duper ESMF coupler becomes available.
1834      - See verification/global_with_exf/README for usage example.
1835      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
1836        flags and modified pkg/seaice accordingly.
1837    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
1838        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
1839        non-local transport term.
1840    
1841    checkpoint51e_post
1842    o pkg/mom_vecinv:
1843      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
1844      - add time-ave diagnostic of vorticity advection.
1845    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
1846    o atmospheric geopotential: - include water vapor effect;
1847                                - use p^kappa in p* scaling.
1848    o land pkg: read initial state from files.
1849    o AIM : add stratospheric drag in the upper level
1850    
1851    checkpoint51d_post
1852    o change function ILNBLNK (=> last non-blank char.) to return zero
1853      (instead of the string length) when the string. char is empty
1854    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
1855    o modif's to restore TAMC compatibility
1856      - avoid "_d" constructs in PARAMETER declarations
1857      - avoid interrupting lines by comment lines
1858    o Use cluster local disks for purely local I/O
1859      vs. globally visible disks needed for ctrl stuff
1860      (merged from ecco-branch)
1861      - new active_file_loc... and mdsio_..._loc routines
1862      - affected packages: autodiff, ctrl, grdchk, mdsio
1863    
1864    checkpoint51c_post
1865    o introducing integer flag debugLevel
1866      - debLevZero: suppress all output
1867      - debLevA: standard
1868      - debLevB: equivalent to current debugMode=.TRUE.
1869    o introducing pathname variable mdsioLocalDir for mdsio
1870      that can be specified at runtime
1871      (relevant for cluster I/O to local disk)
1872    `
1873    >>>checkpoint51b_post
1874    adjoint of ptracers
1875    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
1876    o extended state in checkpoint_lev?, etc.
1877    o alternative ctrl/cost with tr1 or ptracer
1878    o new comlev1_bibj_ptracers
1879    o new ptracers.flow
1880    o made ptracers_forcing same as external_forcing_s
1881    o added verification for adjoint with ptracers
1882      - adm. grdchk fail so far
1883      - tlm. grdchk OK
1884      - checked tapelev/comlev recomputations: OK
1885    <<<checkpoint51b_pre
1886    
1887    checkpoint51a_post
1888    o added code for biogeochemistry package
1889      - new pkgs: dic, gchem
1890      - new subroutine in ptracers
1891    o modify code for biogeo packages
1892      - in model/src and pkg/ptracers
1893    
1894    checkpoint51
1895    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
1896      - autodiff, ctrl, exf, grdchk, seaice
1897      kept separate packages
1898      - cost, ecco, obcs
1899    o updating verification/internal_wave, verification/lab_sea
1900      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
1901    
1902    checkpoint50i_post
1903    o Preparing next differentiable checkpoint and sync
1904      of MAIN vs. ecco-branch
1905      - 1st step: this one is differentiable
1906      - 2nd step: next(! not this) checkpoint will have updated packages
1907                  from ecco-branch)
1908    
1909    checkpoint50h_post
1910    o new package "land": provide surface BC for AIM.
1911    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
1912    o AIM: use true log-P extrapolation for near surface temp (= as in
1913        F.Molteni paper) ; update aim.5l_cs output.
1914    o New variable in PARM03 for more flexible pickups
1915    o somewhat cleaned package initialisation sequence for
1916      ctrl/ cost/ ecco/ in packages_... routines
1917    
1918    checkpoint50g_post
1919    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
1920      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
1921      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
1922        made the default because of faster convergence than ADI
1923    
1924    checkpoint50f_post
1925    o exf totally restructured
1926      - replaced all exf_set_ routines by one generic exf_set_gen.F
1927        and made sure it's still differentiable
1928      - split exf_getffields.F into new exf_bulkformulae.F
1929      - exf_inscal_/exf_outscal_ suffixes consistent with field names
1930      - updated adjoint/makefile and relevant verif. accordingly
1931    
1932    checkpoint50f_pre
1933     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
1934          + change Evap over land. (update aim.5l_cs output)
1935     o added missing .cvsignores and made uniform across expts
1936     o changed configuration of tidal_basin_2d expt
1937     o added pkg/debug functions for tracing code in fatal crashes
1938     o tidied pkg/monitor to use MONITOR_OPTIONS.h
1939     o new fn in pkg/monitor to stop model if solution grows too big
1940     o removed lots of single quotes from comments
1941    
1942    checkpoint50e_post
1943    o make KPP work with PTRACERS
1944     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
1945       nearly a copy of kpp_transport_s
1946     - there is no analogue to SurfaceTendencyS, so I have to use
1947       gPtr(of the surface layer) instead
1948    o add a new platform SunFire+mpi (SunFire 15000) to genmake
1949    checkpoint50e_pre
1950    
1951    checkpoint50d_post
1952    o change kpp output from multiple-record state files to single-record state
1953      files analogous to write_state.F
1954    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
1955      analogous to the cg2d-related output.
1956    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
1957      so that writing to internal file fn (with length 512) fails.
1958    checkpoint50d_pre
1959    
1960    checkpoint50c_post
1961    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
1962    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
1963    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
1964    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
1965    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
1966    
1967    checkpoint50c_pre
1968    Merging from release1_p13:
1969    o bug fix for pkg/seaice dynamic solver
1970    o Added SEAICE_initialHEFF to pkg/seaice
1971    
1972    checkpoint50b_post
1973    o store u*,v* in gU,V instead of in guNm1,gvNm1
1974    o in order to put the momForcing out of the Adams-Bashforth:
1975      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
1976      to timestep.F
1977    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
1978    o re-generate output for highly sensitive test-exp:
1979       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
1980    
1981    checkpoint50b_pre
1982    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
1983    o corrected CPP option mismatch in exf_Bulk... functions for case
1984      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
1985    
1986    checkpoint50a_post
1987    o Bug fix for merging between c50 and KPP.
1988      ikey was passed from thermodynamics to kpp_calc via
1989      common block rather than being recomputed in kpp_calc,
1990      in contradiction with new key itdkey.
1991      New key ikppkey created, and tamc.h headers updated.
1992    
1993    checkpoint50
1994    - 2nd step of merge with ecco-branch:
1995      merge changes in ecco-branch back into main trunk
1996    - bug fix in find_alpha
1997    - more storing in gmredi_calc_tensor.F, kpp_routines.F
1998    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
1999    - merged some sliced AD support routines
2000    
2001    checkpoint49
2002    merged from ecco-branch:
2003    o exf:
2004      - Enable initialisation of forcing fields to constant
2005        (runtime) values.
2006      - in exf_getffields.F
2007        Reduce i-/j-loop to interior domain, discarding overlaps.
2008        That also fixes wrong TAF-key computations for key_1, key_2
2009        with bulf formulae.
2010      - exf_init.F modify #ifdef for exf_init_evap
2011      - exf_getffieldrec.F, ctrl_getrec.F
2012        The following INT-usages are not safe:
2013          fldsecs  = int(fldsecs/fldperiod)*fldperiod
2014          fldcount = int(fldsecs/fldperiod) + 1
2015        and were modified.
2016    o autodiff: checkpoint_lev...
2017      - updated storing for bulk formulae (some arrays were missing)
2018      - added state for seaice package
2019      - synchronized with main branch
2020    o DIVA:
2021      Modif.s in
2022      - the_main_loop.F
2023      - the_model_main.F
2024      and added cost_final_restore.F cost_final_store.F
2025      o With these changes, it is possible to fully separate
2026        the first forward run to compute the cost function (mdthe_main_loop)
2027        and adjoint runs over individual DIVA intervals (adthe_main_loop)
2028        into separate model executions.
2029        This enables better tuning of DIVA to given queue sizes.
2030      o Loss of cost function value in consecutive DIVA runs is
2031        fixed by storing to 'costfinal' file.
2032      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
2033        beginning/end of adjoint integration is accounted for.
2034      The current changes apply to TAF-1.4.26.
2035      TAF has one remaining bug, requiring one manual change
2036      (see MITgcm manual).
2037    o cal: synchronized between MAIN and ecco-branch
2038    
2039    checkpoint48i_post
2040    o Changes to restore differentiability of code w.r.t. previous tag
2041      (mostly adding new routines to make list and replacing
2042      pressure by totPhiHyd).
2043    o Updated and merged grdchk package
2044      - has both ADM and TLM checks
2045      - works for single- and multi-proc.
2046      - output cleaned
2047      - worked successfully for parallel DIVA
2048    o genmake:
2049      - Adding -platform=SP4
2050      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
2051    o Modif. for DIVA:
2052      ctrl_unpack should not be called in intermediate DIVA interval.
2053      (similar thing would apply for active files such as
2054      tbar, sbar, psbar, which should not be reinitialised;
2055      only relevant for ecco-branch)
2056    
2057    checkpoint48h_post
2058    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
2059    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
2060    o Added SEAICE_initialHEFF to pkg/seaice
2061    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
2062    
2063    checkpoint48g_post
2064    --- EOS:
2065    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
2066      store total Potential in totPhyHyd for diagnostics & EOS.
2067    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
2068    --- Pressure/geopotential gradient:
2069    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
2070    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
2071      ( changes results of global_ocean_pressure )
2072    o NLFS + z-coord.: add eta*Rho' contribution.
2073    o accurate phiHyd when using interface-W at the middle between 2 centers
2074     ( changes results of ideal_2D_oce )
2075    o includes r* 2nd term in potential gradient.
2076    
2077    checkpoint48f_post
2078    Merging from release1_p12:
2079    o Modifications for using pkg/exf with pkg/seaice
2080      - improved description of the various forcing configurations
2081      - added basic radiation bulk formulae to pkg/exf
2082      - units/sign fix for evap computation in exf_getffields.F
2083      - updated verification/global_with_exf/results/output.txt
2084    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
2085      (SBO) core products, including oceanic mass, center-of-mass,
2086      angular, and bottom pressure (see pkg/sbo/README.sbo).
2087    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
2088      to avoid negative values in shallow regions.
2089      - updated verification/natl_box/results/output.txt
2090      - updated verification/lab_sea/results/output.txt
2091    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
2092    o Added useSingleCpuIO option (see PARAMS.h).
2093    o Updated useSingleCpuIO option in mdsio_writefield.F to
2094      work with multi-field files, e.g., for single-file pickup.
2095    o pkg/seaice:
2096      - bug fix in growth.F: QNET for no shortwave case
2097      - added HeffFile for specifying initial sea-ice thickness
2098      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
2099    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
2100      kpp_transport_t.F, forward_step.F, and the_main_loop.F
2101    o pkg/seaice:
2102      - adjoint-friendly modifications
2103      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
2104    
2105    checkpoint48e_post
2106    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
2107    o dynamics: change definition of computational domain & adapt mom_fluxform
2108      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
2109    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
2110        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
2111        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
2112        global_ocean.90x40x15 global_with_exf global_ocean_pressure
2113        inverted_barometer solid-body.cs-32x32x1
2114      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
2115    
2116    checkpoint48d_post
2117    o in preparation for r*:
2118     a) use pre-computed gradient of hydrostatic potential:
2119        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
2120     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
2121        => affects results of glob_oce_pressure (different truncation error)  
2122      update output.txt of ideal_2D_oce & global_ocean_pressure
2123    
2124    checkpoint48d_pre
2125    o in preparation for r*:
2126      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
2127      pass the 2 comp. of the grad. as arguments to momentum S/R.
2128      but for the moment, only used if it does not change the results.
2129    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
2130    
2131    checkpoint48c_post
2132    Modifications in treatment of initial flux forcing controls
2133    to avoid extra storing of flux fields.
2134    
2135    checkpoint48c_pre
2136    o Added tidal_basin_2d experiment (currently 1D!)
2137    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
2138    
2139    checkpoint48b_post
2140    o r* coordinate added in #ifdef NONLIN_FRSURF block.
2141     (modification to pressure gradient not yet implemented)
2142    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
2143      (for U & V) that are used for vertical advection of momentum.
2144    
2145    checkpoint48a_post
2146    o In preparation for r*, use temp. array to compute vertical transport
2147       in flux-form momentum pkg. => change results of few test-exp.
2148      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
2149                        lab_sea, natl_box & plume_on_slope
2150    
2151    checkpoint48
2152    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
2153    
2154    checkpoint47j_post
2155    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
2156    o moved adexch from forward_step to addummy_in_stepping
2157    o added exch in ctrl_map_...
2158    o aveFreq.=0. at end of cost_final to avoid overwrite in
2159      reverse checkpointing loop
2160    o Yet more changes in gmredi:
2161      * adgmredi_calc_tensor
2162        avoiding all recomputation of gmredi_slope_limit
2163      * adgmredi_x/y/rtransport
2164        added flag for excessive storing to avoid recomp. of
2165        u/v/rtans, dTdx/y/z
2166        -> this is not really necessary and very memory-consuming
2167      * adgmredi_slope_psi:
2168        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
2169      * gmredi_slope_limit
2170        re-activated full calculation of taperfct for case 'ac02'
2171    o updating verification/ adjoints of carbon, global_ocean.90x40x15
2172    
2173    checkpoint47i_post
2174    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
2175    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
2176      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
2177    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
2178    o gmredi: fix few bugs.
2179    
2180    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
2181    This will be a good checkpoint to plug into the ecco-branch.
2182    o few modif.'s to get latest version adjointed
2183      (mainly kick out code in ini_linear_phisurf)
2184    o modif's to run adjoint with exactConserv
2185    o case GM_BOLUS_ADVEC should be cleaned
2186      S/R gmredi_slope_psi should be cleaned
2187    o verification/carbon now has exactConserv=.TRUE.
2188    
2189    checkpoint47g_post
2190    o time-average AIM output: becomes independent from statvars time-average
2191      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
2192    o After TAF bug fix:
2193      Tested adjoint of gmredi package.
2194      Tests were done with checkpoint47 rather than with latest
2195      checkpoint47f_post since the latter is broken for the adjoint
2196      verification/carbon/ contains both ADM and TLM gradient checks.
2197    Here they are, before they get changed/lost/stolen.
2198    Mostly modif.'s to fix numerical sensitivities.
2199    Gradient checks OK for
2200    - GM_taper_scheme:
2201      * clipping
2202      * ac02
2203      * linear
2204      * glw91
2205      * dm95
2206      * ldd97
2207    - GMREDI_OPTIONS:
2208      * GM_VISBECK_VARIABLE_K
2209      * GM_NON_UNITY_DIAGONAL
2210      * GM_EXTRA_DIAGONAL
2211      * GM_BOLUS_ADVEC
2212    in conjunction with data.gmredi parameters to be checked in
2213    in a few minutes under verification/carbon/code/
2214    
2215    checkpoint47f_post
2216    Merging from release1_p10:
2217    o modifications for using pkg/exf with pkg/seaice
2218      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
2219        and SEAICE_EXTERNAL_FLUXES
2220      - pkg/exf CPP options EXF_READ_EVAP and
2221        EXF_NO_BULK_COMPUTATIONS
2222      - usage examples are Experiments 8 and 9 in
2223        verification/lab_sea/README
2224      - verification/lab_sea default experiment now uses
2225        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
2226    
2227    checkpoint47e_post
2228    o created a tag prior to creating a branch
2229    
2230    checkpoint47d_post
2231    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
2232      at the bottom boundary had an erroneous half slip boundary condition
2233    o added bottom drag and no slip boundary condition capabilities to
2234      oceanic pressure coordinates code
2235    o added new verification experiment global_ocean_pressure, this experiment is
2236      also described in the tutorial section of the manual
2237    checkpoint47d_pre
2238    
2239    checkpoint47c_post
2240    o Added a verification experiment for a global cubed-sphere ocean run
2241      -  verification/global_ocean.cubed32x32x30
2242      -  uses pkg/therm_seaice and pkg/bulk_forcing
2243    
2244    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
2245    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
2246      when using P-coordinate; only implemented for atmospheric config.
2247    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
2248      NOTES: requires option NONLIN_FRSURF to be "#define".
2249    o update advect_xz/results/output.txt (left from checkpoint44g_post)
2250    
2251    checkpoint47b_post
2252    Merging from release1_p9:
2253    o pkg/seaice
2254      - removed GOTO's and added taf directives
2255      - double precision constants to reduce the g77 (Linux)
2256        to F77 (SGI) differences reported in release1_p8
2257    o tools/genmake
2258      - added SGI options
2259    o verification/testscript
2260      - updated to that of checkpoint47a_post
2261    o verification/global_ocean.90x40x15/input/eedata
2262      - modified for SGI f77 compatibility
2263    o verification/lab_sea
2264      - added description of sea-ice model
2265      - added missing matlab routines
2266      - added test of thermodynamics parallelization
2267    
2268    checkpoint47a_post
2269    o new pkg: aim_v23
2270     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
2271       for now, keep the same surface forcing as before.
2272     - Part-Cell implemented into AIM; check that Heat & Water are conserved
2273     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
2274     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
2275    o add diagnostic of surface correction term in monitor output
2276    
2277    o bulk_force and therm_seaice
2278    - Two packages:  bulk_force (Bulk forcing)
2279      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
2280    - Earlier integration from Stephaine Dutkiewicz
2281      and Patrick Heimbach.
2282    - Two ifdef statements for compile time,
2283       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
2284    
2285    checkpoint47
2286    differentiable version of checkpoint46n_post
2287    o bug fix in quasihydrostaticterms
2288    o * "clean" adjoint code (in terms of extensive recomputations)
2289        can now be obtained for all GMREDI options (i.e. for
2290        - GM_VISBECK_VARIABLE_K
2291        - GM_NON_UNITY_DIAGONAL
2292        - GM_EXTRA_DIAGONAL
2293        - GM_BOLUS_ADVEC )
2294      * However, wrong gradient check problem remains unsolved.
2295      * New CPP options have been introduced for different
2296        tapering schemes
2297    o external_fields_load now part of differentiation list
2298    o pressure needs multiple storing;
2299      would be nice to have store_pressure at beginning or
2300      end of forward_step, e.g. by having phiHyd global (5-dim.)
2301      (NB: pressure is needed for certain cases in find_rho,
2302      which is also invoked through convective_adjustment).
2303    o recomputations in find_rho for cases
2304     'JMD95'/'UNESCO' or 'MDJWF' are OK.
2305    o #define ATMOSPHERIC_LOADING should be differentiable
2306    o ini_forcing shifted to begining of initialise_varia
2307    o Incorporating QNVS line search routines into MITgcm
2308      (this is separate code, and therefore not under pkg)
2309      lsopt/, optim/
2310    o Updated verification/carbon/
2311      - #define GM_VISBECK_VARIABLE_K
2312      - GM_taper_scheme    = 'ldd97'    
2313    
2314    checkpoint46n_post
2315    Merging from release1_p8:
2316    o verification/natl_box:
2317      updating new external_fields_load routine
2318    o New package: pkg/seaice
2319      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
2320      The sea-ice code is based on Hibler (1979-1980).
2321      Two sea-ice dynamic solvers, ADI and LSR, are included.
2322      In addition to computing prognostic sea-ice variables and diagnosing
2323      the forcing/external data fields that drive the ocean model,
2324      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
2325      The implied surface heat flux is then stored in variable
2326      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
2327      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
2328      non-local transport term.  Because this call precedes model
2329      thermodynamics, temperature under sea-ice may not be "exactly" at
2330      the freezing point by the time theta is dumped or time-averaged.
2331      N.B.: fairly large differences in accuracy occur across
2332            different platforms/compilers; comparison between
2333            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
2334            generated output gives:
2335       T           S           U           V
2336      C D M    c        m  s        m  s        m  s        m  s
2337      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
2338      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
2339      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
2340    
2341      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
2342    o GAD:
2343      - generated new common blocks to account for call of
2344        same gad routines with differing traceridentities
2345        (needed to modify tracerIdentity indices in GAD.h)
2346      - generated separate common blocks for case useCubedSphereExchange
2347        (Department of Futurology)
2348      - parameter lists to gmredi_?transport: added tracerIdentity
2349      - added new key indices to tamc.h
2350    o external_fields_load:
2351      - added this routine to TAF list
2352      - needed to make some common blocks global and additional storing
2353        along the same lines as exf package (checkpoint_lev?_directives.h)
2354    o exf:
2355      updated external forcing package
2356      - bug fixes carried over from ecco-branch
2357        (missing OBCS_OPTIONS.h in two routines)
2358      - enable easy to use "no forcing".
2359      - added exf I/O for atmospheric loading
2360      - added exf I/O for runoff data
2361      - transfered scaling between exf <-> MITgcm to exf namelist
2362    o Adding new verification experiment global_with_exf.
2363      This verification experiment is almost identical to the
2364      global_ocean.90x40x15 experiment, except that it uses
2365      the exf (and cal) package instead of the
2366      external_fields_load routine (cf README file).
2367    
2368    checkpoint46m_post
2369    o modified testscript to return -- when there are no lines of "%MON" output
2370    o added new flag "quasiHydrostatic" for QH mode
2371      and new routine quasihydrostaticterms()
2372    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
2373      New routine: mom_u_coriolis_nh()
2374    o fixed sign of non-hydrostatic metric terms in u and v equations.
2375      Depend on correct sign of gravitySign.
2376    o added work.pc* to .cvsignore in aim directories using ifc
2377    o introduced flag for controllin non-hydrostatic metric terms
2378    o removed gravitySign from PARM04
2379    o switched to g77/ifc from pgf77 in aim experiments
2380    
2381    checkpoint46l_post
2382    o made convective adjustment work with pressure coordinates:
2383     - changed the direction of k-loop in convective_adjustment.F for the
2384       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
2385     - adjusted the reference pressure k-index in convective_adjustment.F
2386     - adjusted the convection condition in convect.F (in analogy to
2387       calc_ivdc.F)
2388     - convective_adjustment no longer computes anything on the halos
2389     - removed the warnings about negative salinity from find_rho.F and
2390       find_alpha.F; instead the new routine look_for_neg_salinity, called
2391       at the beginning of find_rho, find_alpha, and find_beta, does a
2392       check of the entire slice, if CPP-option
2393       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
2394    checkpoint46l_pre
2395    
2396    checkpoint46k_post
2397    o fixed the verification/global_ocean.90x40x15 experiment:
2398     - new bathymetry (the world according to A., JMC, and M.)
2399     - new initial fields and forcing fields (*.bin files)
2400     - new POLY3.COEFFS (for the next release one should switch to a full
2401       equation of state: JMD95P or MDJWF)
2402     - fixed several errors and redundancies in the data file
2403     - experiment uses looped cells
2404     - added matlab directory with diagnostic scripts for plotting of output
2405    
2406    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
2407     - read AIM physics parameters from a file (data.aimphys)
2408     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
2409    
2410    checkpoint46j_post
2411    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
2412    o move wVel computation at the end of the time step, in S/R integr_continuity
2413    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
2414    o update timeave pkg for wVel diagnostic.
2415    checkpoint46j_pre
2416    
2417    checkpoint46i_post
2418    o Clean up AIM package (and keep the results unchanged):
2419      include CPP_OPTION and use IMPLICT NONE in all routines ;
2420      declare all the variables _RL ; use _d 0 for all numerical constants.
2421      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
2422    
2423    checkpoint46h_post
2424    o cleaned up the use of rhoNil and rhoConst.
2425      - rhoNil should only appear in the LINEAR equation of state, everywhere
2426        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
2427        and the dynamical equations are all divided by rhoConst
2428    o introduced new parameter rhoConstFresh, a reference density of fresh
2429      water, to remove the fresh water flux's dependence on rhoNil. The default
2430      value is 999.8 kg/m^3
2431    o cleanup up external_forcing.F and external_forcing_surf.F
2432      - can now be used by both OCEANIC and OCEANICP
2433    checkpoint46h_pre
2434    
2435     Added code to convert surface volume flux (fresh water) into
2436     a mass flux when using P coordinates in the ocean (OCEANICP).
2437     Note: It assumes you have set rho0=rhoConst=density of fresh water.
2438    
2439    checkpoint46g_post
2440    o Include a new diagnostic variable phiHydLow for the ocean model
2441      - in z-coordinates, it is the bottom pressure anomaly
2442      - in p-coordinates, it is the sea surface elevation
2443      - in both cases, these variable have global drift, reflecting the mass
2444        drift in z-coordinates and the volume drift in p-coordinates
2445      - included time averaging for phiHydLow, be aware of the drift!
2446    o depth-dependent computation of Bo_surf for pressure coordinates
2447      in the ocean (buoyancyRelation='OCEANICP')
2448      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
2449        Theta, Salinity, and Pressure in the parameter list. This routine is
2450        presently contained in find_rho.F. This routine does not give the
2451        correct density for 'POLY3', which would be a z-dependent reference
2452        density.
2453    o cleaned up find_rho
2454      - removed obsolete 'eqn' from the parameter list.
2455    o added two new verification experiments: gop and goz
2456      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
2457    checkpoint46g_pre
2458    
2459    checkpoint46f_post
2460    o Enable tangent linear (forward mode) gradient checks:
2461      - extended active file handling to g_... files
2462      - added TANGENT_SIMULATION to theSimulationMode
2463      - extended grdchk package accordingly
2464    o added tangent linear setup in verification/carbon/code_ftl
2465    o added adjoint setup in verification/front_relax/code_ad
2466    
2467    checkpoint46e_post
2468    o Added new equation of state -> MDJWF
2469      - EOS of McDougall et al., 2002, JAOT, submitted
2470      - caveat: the equation of state is only valid for a smaller (more
2471        realistic?) range of values than JMD95P/Z and UNESCO
2472      - added masks to the calculation of pressure in store_pressure
2473      - added more check values for density in check_eos (ini_eos.F), some of
2474        the old check values are out of the range of the MDJWF-eos, so don't
2475        expect perfect matches for those
2476    checkpoint46e_pre
2477    
2478    checkpoint46d_post
2479    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
2480      'OCEANICP', also initialised field pressure correctly in ini_eos in the
2481      case of pressure coordinates. eosType='JMD95Z' in
2482      combination with buoyancyRelation='OCEANICP' now causes an error.
2483    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
2484      in find_alpha/beta.
2485    checkpoint46d_pre
2486    
2487    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
2488      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
2489    
2490    checkpoint46c_post
2491    o Changes necessary for ocean in p-coordinates
2492     -  Added new buoyancy relation = 'OCEANICP'
2493     -  Added new parameters = gravitySign (this used to be contained inside
2494        the factor dRdZ which I added when we first switched to R coordinates).
2495     X GM/Redi is not compatible (yet)
2496     X bottom drag and no-slip need to be debugged.
2497    checkpoint46c_pre
2498    
2499    checkpoint46b_post
2500    o Added new equation of state -> JMD95Z and JMD95P
2501      - EOS of Jackett and McDougall, 1995, JAOT
2502      - moved all EOS parameters into EOS.h
2503      - new routines ini_eos.F, store_pressure.F
2504    o Added UNESCO EOS, but not recommended because it requires
2505      in-situ temperature (see JMD95)
2506    o Modified formatting for knudsen2.f in utils/knudsen2 and added
2507      unesco.f to be used with POLY3
2508    checkpoint46b_pre
2509    
2510    checkpoint46a_post
2511    o Added (atmospheric) pressure loading
2512      - new field in FFIELDS.h, etc...
2513      - new cpp flag ATMOSPHERIC_LOADING
2514    o Changed hFacC to _hFacC in calc_phi_hyd.F
2515    o Added SHORTWAVE_HEATING to some files for consistency
2516    checkpoint46a_pre
2517    
2518    checkpoint46
2519    further merges from release1_p5
2520    o new ctrl package
2521      - adopted from ECCO environment to enable optimization
2522      - added Eliassen Palm fluxes to controls
2523    o added Eliassen Palm flux controls to gradient check package
2524    o cost package
2525      - Compatible with new ctrl package
2526      - added Eliassen Palm cost hooks
2527      - modif's of existing cost functions
2528    o Adjoint-related bug fixes in kpp:
2529      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
2530      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
2531    o autodiff package
2532      - flow directives:
2533        + new for S/R do_the_model_io
2534        + enhanced for S/R checkpoint
2535        + new gmredi.flow
2536      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
2537        disable adcommon.h/g_common.h by default.
2538      - fixed problem for adjoint of global_max
2539    o modified verification/carbon/
2540    o New setup for adjoint of global_ocean
2541    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
2542    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
2543    o incorporated hooks for sponge layer code (external_forcing.F)
2544    
2545    checkpoint45d_post
2546    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
2547    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
2548      (affects plume_on_slope "cg2d" output)
2549    o add new parameter deltaTfreesurf for free-surface time stepping
2550    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
2551    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
2552    o change phiMin in exp1 (to agree with documentation)
2553    o add new flags:
2554     - T,S forcing inside/outside Adams-Bashforth
2555     - turn off temp,salt advection and/or forcing
2556     - for each tracer, define internal flag for multiDimAdvection & A-B
2557    o monitor: change definition of KE to check conservation of Energy
2558    
2559    checkpoint45c_post
2560    o Removed f90 comments ("!")
2561    o Modified initialisations to enable exf package for MITgcm
2562      (without invoking ECCO_PACKAGE).
2563    o modifications to gradient check package (Martin Losch)
2564      - enable centered differences
2565      - modified format of standard output
2566    
2567    checkpoint45b_post
2568    o cleaned exchange calls in cg2d
2569    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
2570    o included CPP option SINGLE_LAYER_MODE in thermodynamics
2571      to configure barotropic setup (Martin Losch)
2572    o moved some initialisations within bi,bj loop in dynamics
2573      (TAF flow dependency)
2574    o in initialise_varia, moved call packages_init_variables
2575      before convective_adjustment_init
2576      (corresponding adjustment of TAF tape initialisation).
2577    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
2578    
2579    checkpoint45a_post
2580    o compute Rho over the whole domain (extend iMin,jMin indices)
2581    o specific exchange for X-slice domain (case Ny=1)
2582    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
2583    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
2584    
2585    checkpoint44h_post = checkpoint45
2586    o Fix to restore differentiability:
2587      place at which packages_init_variables is called in
2588      initialise_varia is crucial for reverse control flow.
2589    o modifications in GMRedi to enable stable adjoint
2590      (corresponding modif's in thermodynamics, dynamics)
2591    o added missing hook for sponge layer code in external_forcing
2592    o modified test cost functions
2593    o storing in gad_advection (plus removal of write(0,*)!
2594    o missing headers TR1.h added in convective_adjustment routines
2595    o errorMessageUnit set non-equal zero in eeboot
2596      (conflict on some platforms, e.g. IBM SP3)
2597    o modified carbon verif.
2598    
2599    checkpoint44h_pre
2600    o vertical grid option: allow to put the Interface at the middle between
2601      2 cell-centers ; replace delZ in pkg/kpp by drF.
2602    o GM Advective form: Tracers are advected using the residual transport (=
2603      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
2604    
2605    checkpoint44g_post
2606    o fix surface correction term in multiDimAdvection (affects plume_on_slope
2607      results) ; ifdef missing in thermodynamics.F
2608    
2609    checkpoint44f_pre,checkpoint44f_post
2610    o added PTRACERS package
2611      This allows an arbitrary number of passive tracers to be integrated
2612      forward simultaneously with the dynamicaly model.
2613      + Implemented so far:
2614        - basic forward algorithm (time-stepping, advection, diffusion, convection)
2615        - I/O and checkpointing
2616        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
2617      + Not implemented so far:
2618        - KPP
2619        - OBCS
2620      + No specific example supplied (yet) but global_ocean.90x40x15 has the
2621        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
2622        line in data.pkg.
2623      + This package is disabled by default since it increases storage.
2624    
2625    
2626    o testscript: added -cleanup option
2627    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
2628                 b) enable to filter 2D fields.
2629    
2630    checkpoint44e_pre,post
2631    o re-wrote convective adjustment to use pre-calculated weights
2632      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
2633      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
2634      Original calls to convect() still in place.
2635    
2636    chkpt44d_pre,post
2637    o added missing EXCLUDE_MONITOR flags
2638    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
2639      (incompatible typ in MIN/MAX expressions caused problems
2640      on IBM SP3)
2641    o in genmake added variable MAKEDEPEND
2642      plus resetting for case SunOS
2643    o added timer_stats.c routine for IBM SP3
2644    o removed variables in dynamics
2645    !!! I forgot to create tag chkpt44d_pre !!!
2646    !!! But chkpt44d_pre = chkpt44c_post    !!!
2647    
2648    o real fresh water flux implemented with non-linear free-surface.
2649    
2650    chkpt44c_pre,post
2651    o few fix (mask in shap_s2, EmPmR in external_field_load,
2652      USE_NATURAL_BCS in solve_for_P);
2653    o add arguments myIter & myTime to S/R obcs_calc & solve_for_P
2654    
2655    checkpoint44b_pre/_post
2656    o merge of relevant stuff from the ecco-branch:
2657      - genmake: removed $S64 overwrite for case SunOS
2658      - pkg/exf: update and corrections for field swapping and obcs
2659      - pkg/ecco: parameter lists for the_model_main, the_main_loop
2660                  harmonized between ECCO and MITgcm
2661      - pkg/autodiff: added flow directives for obcs, mdsio_gl_slice
2662                      updated checkpointing_lev... lists for obcs
2663      - model/src: minor changes in forward_step, plot_field
2664                   added directive for divided adjoint in the_main_loop
2665      - pkg/mdsio: added mdsio_gl_slice
2666    
2667    o check parameters & config (chkpt44a_pre,post)
2668    o OBC and NonLin_FrSurf.
2669    
2670    checkpoint44
2671    o fix bug in mom_vi_del2uv
2672    o select when filters are applied ; add options to zonal_filter (data.zonfilt)
2673    o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
2674    o update AIM experiments (NCEP input files)
2675    o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
2676    o added some stuff for AD
2677    
2678    checkpoint43
2679    o added two new advection tests
2680    o added global 4x4 degree ocean test
2681    o added test of H&S94 with free surface on cube
2682    o some final mods for gradient check, adjoint,...
2683    
2684    checkpoint42
2685      Fixed AD-related problems:
2686    o Store directives up-to-date with re-arranged Adams-Bashforth
2687      (mainly thermodynamics.F)
2688    o New store directives for multi-dim. advection schemes
2689      * new CPP flag ALLOW_MULTI_DIM_ADVECTION
2690      * new common block and key passkey
2691      (mainly gad_advection.F)
2692    o Modified store directives for split of dynamics/thermodynamics
2693      for the case ALLOW_KPP
2694    o Cleaned argument list for timestep_tracer.F
2695    
2696    checkpoint41
2697    o re-formatted/added comments in prologues of key subroutines
2698      to work with protex
2699    
2700    checkpoint40
2701    o moved calc_gs, calc_gt and calc_tr1 back to model/src
2702    o added FLT (floats) package from Arne along with demo. experiment
2703    o re-arranged Adams-Bashforth scheme for tracers to allow easier
2704      implementation of forward-in-time forcing terms
2705    o more mods for non-linear free-surface including new variable
2706    o modified multi-dim method to work on cube
2707    o bug fix in KPP (from DM)
2708    
2709    checkpoint40pre9
2710    o added DST advection schemes
2711    o fix MPI bug on SGI's
2712    o modifications for non-linear free-surface
2713    o fixed conditionals for fixed flow/passive tracer only mode
2714    o added tension/strain form of stress tensor
2715    o changes to commenting of arguments for TAF/TAMC
2716    o added/updated many matlab scripts
2717    o added multi-dimensional advection method for tracers
2718      
2719    checkpoint40pre8
2720    o new package rw/
2721      Added method for dumping intermediate local arrays:
2722      mdsio_writetile - same as mdsio_writefield except works from inside
2723                        bi,bj loop
2724      mdsio_writelocal - same as mdsio_writetile except works for local
2725                         arrays
2726      write_local_r? - higher-level wrapper for mdsio_writelocal
2727      Controlled by diagFreq. Defaults to zero (ie. no dumps)
2728      Example given at end of mom_vecinv.F that dumps some local arrays.
2729    o replaced calc_mom_rhs.F by mom_fluxform.F/mom_vecinc.F to
2730      control flux-form versus vector invariant code.
2731      Switch is runtime flag vectorInvariantMomentum (defaults to false)
2732      or genmake -DISABLE ...
2733    o TAMC-related update to cope with mom_fluxform.F/mom_vecinc.F
2734      (additional storing is now needed for case vecinv;
2735      currently nothing implemented to switch this storing off
2736      in case fluxform is used since no CPP flag available).
2737    
2738    checkpoint40pre7
2739    o bug fix in dynamics.F
2740      calc_viscosity called before k=1,Nr loop.
2741    o added some #ifdef's ALLOW_PASSIVE_TRACER
2742    o cleaned initialisations in ctrl_map_ini
2743      related to TAF
2744    
2745    checkpoint40pre6
2746    o split dynamics into thermodynamics & dynamics
2747    o corresponding split of calc_diffusivity into
2748      calc_diffusivity, calc_viscosity
2749      (kpp_calc_diff, kpp_calc_visc).
2750    o Added diffkr, kapgm to control variables
2751    o bug fix in gmredi_slope_limit for ldd97
2752    
2753    checkpoint40pre5
2754    o proper initialization of Adams-Bashforth time stepping
2755      + uses forward step for very first step of model (iter=0)
2756    o re-generated *all* output since almost all output is modified by this
2757      change (sorry but we've been putting this one off for about 2 years)
2758      + natl_box, aim.5l_Equatorial_Channel and aim.5l_zon-ave were
2759        *not* regenerated since they are already out of date and I don't
2760        want to create the impression that they are suddenly working.
2761    o removed KAP stuff for DEC's
2762    o modified/added many .cvsignore files in */code and */input
2763    o added new expt "solid-body.cs-32x32x1"
2764      + this uses an alternative form of ini_curvilinear_grid.F which
2765        is not necessarily any better than the current one...
2766    
2767    checkpoint40pre4
2768    o added re-initialisations of utrans,vtrans,rtrans in
2769      calc_common_factors which are crucial for TAF.
2770    o extended iMin,jMin range for calc_common_factors,
2771      calc_diffusivity
2772    o added option ALLOW_PASSIVE_TRACER
2773    o a few minor updates and fixes
2774    
2775    checkpoint40pre3
2776    o created calc_gtr1.F for gad package
2777    o split the_main_loop and re-introduced forward_step
2778    o some recomputations of nIter0 for TAMC
2779    
2780    checkpoint40pre2
2781    o Updated to latest branch of AJA, JMC
2782    o Added gradient check package
2783    o Added routines for passive tracer handling
2784    o Added carbon sequestration sensitivity experiment
2785    
2786    checkpoint39
2787     o Modifications and fixes to support TAMC
2788       (mainly missing or wrong directives)
2789     o Corrected common blocks when fooling TAMC to produce adjoint I/O
2790       in addummy_in_stepping
2791     o Updated verification/vero/ (bug fixes in code/, correct pickups in input/)
2792     o Enabled "sliced" (xz-,yz-) exchanges, needed for obcs.
2793     o Included following packages:
2794       cal: calendar
2795       exf: external forcing
2796       ecco: essential routines to control use of cal, exf
2797             (NB: this is not the full ECCO environment)
2798     o disabled some packages by default in genmake
2799    
2800    checkpoint38
2801     o see notes_c37_adj.txt
2802     o corrected wrong layer index in external_forcing_t
2803     o replaced the_main_loop/forward_step by the_main_loop
2804     o removed forceoutput from write_state
2805       (replaced criteria for initial/final state)
2806     o added runtime flag for pre-C35 pickups: usePickupBeforeC35
2807    
2808    checkpoint37
2809     o mdsio.F routine split and packaged in pkg/mdsio
2810       (mdsio.F and mdsio_gl.F still exist in eesupp/src but are not
2811        used unless genmake -disable=mdsio)
2812     o allow a more precise surface-geopotential gradient for the atmosphere
2813       taking into account the change in space of Alpha (=1/rho) at the surface.
2814     o variable "etaN" (replace cg2d_x) is the surface R-anomaly [r unit]
2815       (ocean: sea surface height [m] / atmos: surface pressure anomaly [Pa])
2816     o Change units: Phi_Hydrostatic (=phiHyd), Phi_Surface(=cg2d_x) and
2817       Phi_NonHydrostatic (=cg3d_x), all have now the dimension of a potential
2818       [m2/s2] (pressure/rhoConst in the ocean ; Geo-Potential in the atmosphere).
2819     o Time-Average diagnostics defined as a pseudo package "timeave".
2820     o pickup files : old pickup (before c35) did not work with new code (c35
2821       and after) unless activating 2 commented lines in initialise-varia.
2822     o Non-Hydrostatic pickup file Pb fixed.
2823     o bug with Rigid-lid version (since c35) fixed.  
2824    
2825    checkpoint36
2826     o implement Crank-Nickelson barotropic time-stepping
2827     o recover Time-Average diagnostics
2828     o fix Pb in checkpoint (PR#19)
2829     o AIM become a standard package ; clean unused CPP_kees
2830    
2831    checkpoint35
2832     o subtantial rewrite of dynamics.f
2833     o allows staggered time-stepping
2834     o packaged obcs, aim (Atmospheric Physics), zonal_filt, shap_filt
2835     o added bottom drag (linear + quadratic)
2836    
2837    checkpoint34
2838     o Modified exchange routines for correct reverse simulation.
2839     o Added verification output to comply with bug fix in impldiff.F
2840       as of c33 (exp2, natl_box).
2841     o Corrected store directives in dynamics.F
2842     o Corrected array boundaries in impldiff.F
2843     o Corrected array dimensions in gmredi.
2844       Added temporary scalars to avoid storage by TAMC (gmredi, kpp).
2845     o Added routine GLOBAL_SUM_INT to global_sum.F
2846     o Added mdsio_gl.F for ECCO purposes.
2847    
2848    checkpoint33
2849     o Fixed bug in lower BC in impldiff.F
2850     o Fixed confusion about units of forcing arrays in FFIELDS.h
2851       namely Fu,Fv,Qnet,Qsw,EmPmR:
2852       - Removed verification/natl_box/code/external_fields_scale.F
2853         (did not differ from that in model/src)
2854       - Changed units of fu,fv,Qnet,Qsw,EmPmR back to proper units
2855         (see FFIELDS.h for description)
2856       - Scale fu,fv,Qnet,Qsw,EmPmR when used in external_forcing_surf.F,
2857         kpp_calc.F and kpp_transport_t.F
2858       - Removed model/src/external_fields_scale.F and calls to it
2859       - verification/natl_box uses flux data with "atmospheric" sign so
2860         a special version of external_fields_load.F is used to
2861         change the data as it's read in. This way, the arrays
2862         have the right units and signs at all times tha a user could
2863         possibly use them.
2864     o Corrected genmake to delete a temporary file during configuration
2865    
2866    checkpoint32
2867     o Scaling of forcing fields moved from external_forcing.F to
2868       external_fields_scale.F, called directly after loading fields.
2869     o Surface relaxation terms added to surface tendency fields in
2870       extra subroutine.
2871     o impldiff.F changed to avoid storing by TAMC of huge intermediate
2872       fields.
2873     o Changes in GMRedi to comply with packaging structure.
2874     o Modifications and bug fixes in KPP package.
2875     o Verification experiment for KPP added (verification/nat_box/)
2876    
2877    checkpoint31
2878     o Packages interface brought in line with defined standard
2879       -> new routines packages_...F
2880       -> changes in initialise_fixed.F, initialise_varia.F
2881       -> enables initialisation interface for ECCO package
2882     o Rescaling of external forcing fields immediately after read
2883       (removed from external_forcing.F)
2884       -> new: surface_fields_scale.F
2885       -> affects ini_foorcing.F, external_fields_load.F
2886     o Computation of surface tendencies before tendency updates.
2887       -> new: external_forcing_surf.F
2888     o Change of variable names useGMRedi, useKPP, useECCO
2889     o Further changes in dynamics.F, impldiff.F for TAMC
2890     o Tested for experiments 0, 2, 4.
2891       - not yet tested for GMRedi.
2892       - not yet tested for KPP.
2893    
2894    checkpoint30
2895     o Updates for OBCs
2896     o New experiment for test OBCs (internal_wave)
2897     o New output.txt in verification/exp4/results/
2898     o Updates for KPP: calculation of viscosity corrected, new variables
2899       kpp_dumpFreq and kpp_taveFreq
2900     o CPP'd calls to system routines for TARGET_CRAY_VECTOR (P.H.)
2901       and entry for T90 in genmake
2902    
2903    checkpoint29
2904     o packaged KPP and GM/Redi
2905    
2906    checkpoint28
2907     o Corrected initialization of hFacMin for difference vertical coordinates
2908     o Modified calculation of partial cell thickness to more robust algorithm
2909     o config_summary.F: replaced write_1D_... by write_0D_...
2910       read_write.F: added subroutines write_0D_...
2911     o routines calc_common_factors, calc_gs, calc_gt, calc_phi_hyd, find_rho:
2912       included some initialisations required for TAMC.
2913     o routine calc_isoslopes: modified sqrt computation to make it
2914       differentiable for zero argument.
2915     o routines dynamics, impldiff:
2916       included store directives and tape key computations required for TAMC.
2917     o ALL TAMC related changes are between ifdef ALLOW_AUTODIFF_TAMC
2918    
2919    checkpoint27
2920     o fixed calc_isoslopes() to so that cancellation of terms in tensor
2921       formulation works properly with variable resolution.
2922     o restructured the calling tree between the_model_main() and dynamics()
2923     o split initialise() into initialise_fixed() and initialise_varia()
2924     o introduced initialization file pSurfInitFile for free surface (cg2d_x)
2925       in new routine ini_psurf()
2926    
2927    checkpoint26
2928     o moved some #ifdef in optional routines to encompass everything
2929       except the argument declarations. This was using up some memory.
2930     o fixed macros like _ADT to work with both versions of Linux cpp
2931     o cleaned up some unused and uninitialized variables
2932       (helps when debugging with strict compile options)
2933     o split up CPP_EEOPTIONS.h into options and macros
2934       (macros are now in eesupp/inc/CPP_EEMACROS.h)
2935     o patch for 2 processor JAM mode
2936    
2937    checkpoint25
2938     o updates for OBCs and NH
2939     o dramatically reduced memory usage
2940     o added "JAM" routines for use on Artic network
2941     o parameterization of convection by implicit vertical diffusion
2942     o added a diagnostic of convective index
2943     o moved call to calc_divg_hat() from dynamics() to solve_for_pressure()
2944       (this is was partly for OBCs and NH but also in anticipation of
2945        an explicit free-surface option)
2946     o initial state input files for U and V
2947    
2948    checkpoint24
2949     o Removed some spurious "REAL"s
2950     o Updated KPP to latest version from JPL
2951     o Added a COS(latitude) in horizontal viscosity
2952    
2953    checkpoint23
2954     o Added del^4 diffusion for salt and temperature
2955     o Multiple minor fixes (implicit none's, arguments to global_sum, etc.)
2956    
2957    checkpoint22
2958     o Made many small changes: implicit none, format(i5), etc...
2959     o Introduced KPP mixing scheme (compiles and runs but *not* tested)
2960    
2961    checkpoint21
2962     o Introduced new I/O package that supports direct-access records (mdsio.F)
2963     o Split-up mid-level I/O routines
2964     o Updated input data for experiments 0,1,2,4 and 5
2965     o Finally removed the genmake.* scripts (everyone seems happy with genmake)
2966    
2967    checkpoint20
2968     o Tidied up open-boundaries some more
2969     o Added non-hydrostatic code
2970     o Fixed some input data
2971     o Modified MPI start-up to work in "coupled" context.
2972    
2973    checkpoint19
2974     o Tidied up directory structure for verification experiments.
2975     o Added new code for open boundaries.
2976     o Corrected advective terms near boundaries.
2977     o Added CPP flag for "old UV" geometry and corrected spherical geometry.
2978     o Implemented free-slip/no-slip BCs and del^4 dissipation.
2979     o Split default parameters out of ini_parms.F into set_defaults.F.
2980    
2981    checkpoint18
2982     o Further changes for optional code generation with
2983       CPP - ugh!
2984    
2985    checkpoint17
2986     o Beginning to incorporating modularity
2987       for supporting atmos. and ocean configs.
2988     o Small changes for TAMC complinace
2989     o New ultra simple test case. Barotropic box
2990       configuration "exp0".
2991    
2992    checkpoint16
2993     o Minor changes to exchange routines to support
2994       accumulation in reverse mode. Adjoint of an
2995       assignment is an addition.
2996     o Changes to support compilation by TAMC (LR(1)
2997       syntax) and by g77 under Linux ( 72 character
2998       limit ).
2999    
3000    checkpoint15
3001     Rewrote exchange routines to allow
3002     o General tile <-> tile connectivity.
3003     o TAMC reverse mode flag ( is this really needed? )
3004     o Variable width overlap and exchange region widths.
3005     o Hooks for sharing data via DMA, Arctic, Memory Channel,
3006       shmput/shmget, VIA, SYSV shmem and every other cool
3007       communication method.
3008    
3009    checkpoint14
3010     Consistent isomorphism chages made. These allow dynamical core
3011     to support both pressure and meters as a vertical coordinate.
3012    
3013    checkpoint13
3014     Release which corrects global_max problem and a couple
3015     of KGM time-averaging diagnostic errors. Also contains
3016     a double-gyre experiment setup as well as the baseline
3017     4 degree global template. The double gyre template is
3018     organised to allow it to be applied automatically to
3019     the baseline configuration.
3020    
3021    branch-point-rdot
3022     A few tidy-ups have been made bt the real point of this
3023     check-point (excuse the pun) is to allow a branch to be
3024     made for the purposes of adding the rDot alterations.
3025     I don't want to commit the rDot to the main-trunk until
3026     we've actually tested it...
3027    
3028    checkpoint12
3029     Tidy up and added generic genmake script (formerly
3030     configure script).
3031     Released to testers.
3032    
3033    checkpoint11
3034     Re-arranged initialise() and introduced ini_vertical_grid()
3035     and ini_masks_etc().
3036    
3037  checkpoint10  checkpoint10
3038   Introduced the configure script.   Introduced the configure script.
3039   Separated out the diags package.   Separated out the diags package.

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