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revision 1.60 by jmc, Sun Feb 10 20:07:14 2002 UTC revision 1.478 by jmc, Mon Apr 25 23:25:54 2005 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 test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
8    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
9      not mnc -- this mistake was found by JMC and is now corrected
10    
11    checkpoint57g_post
12    o add Adams-Bashforth 3rd Order time stepping:
13      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
14      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
15    checkpoint57g_pre
16    
17    o make lambda[Theta,Salt]ClimRelax spatially varying
18      (default remains spatially uniform constant based on tau)
19    o added new control variables
20      * init. uVel, vVel, etanN
21      * lambda[Theta,Salt]ClimRelax
22    o separate masks used for ctrl_pack/unpack 'from write_grid' output
23      (suggested by G. Forget)
24    
25    checkpoint57f_post
26    o add parameter "baseTime" = model base time = time at iteration zero
27      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
28      account for baseTime shift
29    o move Coriolis arrays from PARAMS.h to GRID.h
30    checkpoint57f_pre
31    
32    o mnc-ifying the seaice package
33    o introduced an alternative length scale calculation for use in the limiting
34      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
35    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
36    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
37      as well as grad(vort3).  Made it compatible with both approximate form
38      for the cubed sphere and full form of these gradients.  Added flag
39      useFullLeith to select between approximate and full form.  
40    o add "d0" in getcon.F to reduce differences between compilers/platforms
41      update output.txt of exp. fizhi-gridalt-hs
42    o change port_rand funtion to allow to set the seed.
43    o fix obscure MNC bug involving conversion between reals and integers
44      - it caused no problems with certain (eg. gcc, ifc) compilers but the
45        new version is now more standards-compliant
46    o adjoint-related modifications
47      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
48      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
49      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
50    
51    checkpoint57e_post
52    o Adding eddy stress controls a la Ferreira et al.
53    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
54    
55    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
56      update output.txt of exp. fizhi-gridalt-hs
57    o add more "Z" dimensions and associated coordinate vars to MNC
58    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
59    o parameter calendarDumps: when set, approximate months (30-31 days) and years
60      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
61      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
62      months and years.  Requires pkg/cal.
63    o diagnostics: add pickup functionality
64      - off by default for backwards compatibility
65      - current version only uses MDSIO -- MNC will be added
66    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
67    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
68    
69    checkpoint57d_post
70    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
71    o modify verification/ideal_2D_oce so that it tests the creation of mnc
72      output from the diagnostics package
73    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
74    o make genmake2 more portable by using ".$FS" instead of ".f" for more
75      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
76    o add coordinate variables to the MNC output from the diagnostics package
77    o change MNC-flags default value: true when useMNC=TRUE
78    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
79      the ability (off by default) to read the grid information using MNC
80    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
81    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
82    o do snap-shot diagnostics at the middle of the time-interval (instead of
83      at the end).
84    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
85      new test for AIM with thSIce + slab-ocean
86    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
87    o move state variable diagnostics to the beginning of the time step ;
88      (note: still needs some work specially for snap-shot diagnostics)
89      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
90    
91    checkpoint57c_post
92    o Change testing option (-ieee) to get closer agreement between g77 & ifort
93    o generate new output.txt files on faulks with g77 & the new -ieee option
94    checkpoint57c_pre
95    
96    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
97      update output.txt of exp. global_ocean.90x40x15
98    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
99      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
100    o add saltFlux(+File) forcing capability with periodicExternalForcing
101    o allow to use pkg diagnostics for GM-Redi & ThSIce output
102    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
103    o improvements for the MNC output from DIAGNOSTICS:
104      - correct handling of the unlimitied dimension
105      - all dims now have associated coordinate variables
106      - variables located at U, V, and Corner ("Z") points are now written
107        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
108        *all* data points are output
109    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
110    o added pkg/seaice/seaice_monitor.F
111    o mdsio_readfield.F can now read files visible only to master MPI process.
112    o pkg/seaice: some test code for ice-modified ocean stress
113    o exf_getffields interpolation defaults to bilinear for all scalar forcing
114      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
115      spurious negative numbers for precipitation and humidity.  Will cause
116      some small numerical differences for integrations using pkg/exf/exf_interp.F.
117    o pkg/ctrl/
118      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
119        May be enabled via doPackDiag
120      *  introduce z-scaling of
121         + gradient (doZscalePack) and
122         + control (doZscaleUnpack)
123    o pkg/mdsio/
124      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
125      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
126    
127    checkpoint57b_post
128    o simplify options in diagnostics_fill arguments (remove weird combinations)
129    o fix MNC coordinate variables so that they now contain per-face index
130      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
131      general, EXCH2 grids are only aligned to a "local" coordinate system
132    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
133    o Implement instantaneous output within pkg diagnostics:
134      setting a negative frequency in data.diagnostics produces
135     "snap-shot" output (as opposed to time-average if freq > 0)
136    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
137      NOTE: change ptracer diagnostics name: use 2 characters to work with
138            more than 9 tracers. Add also diagnostics of advect & diffus flux.
139    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
140      becomes the coordinate variable for the 'T' dimension
141    o add CF-style coordinate variables to MNC
142      - just a first cut:  numbers are meaningless on the cubesphere and
143        missing along the T axis but otherwise it works!
144    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
145    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
146    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
147      this is based directly on what the model compute, so that the content of
148      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
149    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
150    o clean up build options files for SunOS, in particular
151      - remove -traditional from xmakedepend
152      - change -xarch=v9 to -xarch=native for f77
153      - restore use of make (not gmake)
154      - add CC=gcc if using g77
155    o changes per discussion of AM, JMC, & EH3 today:
156      - move redundant "grid" variables out of "state" -- in preparation of
157        creating proper CF-style coordinate variables and in recognition
158        that any/all grid variables can be easily copied (eg. w/NCO) from
159        the grid files into any of the other NetCDF files
160      - *always* output grid variables with MDSIO (this will eventually be
161        changed)
162      - output MNC grid file if useMNC is true
163    o every instance of _END_MASTER() has been found and replaced with
164      _END_MASTER( myThid ) in order to satisfy certain picky Sun
165      preprocessors
166    o re-arrange diagnostics pkg initialisation:
167     - allow each package to extend the available diagnostics list
168     - add some checking and fix small problems (multi-threaded, ...)
169     - new S/R diagnostics_fill (replace fill_diagnostics):
170       look through the short list of active diag. (instead of the long list)
171       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
172    
173    checkpoint57a_post
174    o this set of changes restores TAMC compatibility
175      tested for global_ocean.90x40x15 adjoint on trough
176      (what a pain)
177    
178    checkpoint57a_pre
179    o some modifs in tools/build_options for sunos
180    o call ctrl_pack for ctrl at end for optimcycle=0
181    
182    checkpoint57
183    o add horizontal bi-harmonic viscosity for vertical velocity
184      - new parameter viscA4W (defaults to viscA4)
185      - affects only non-hydrostatic code
186      - to be done: no-slip lateral boundary conditions
187    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
188    o implement Implicit Vertical advection for pTracers
189    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
190      (implemented also for implicit vertical diffusion & advection)
191    o OBCS: extend application of tracer open boundary conditions
192      to a strip beyond the boundary of width Olx/Oly
193    o add call monitor to TAF set of required calls (flow directives)
194      and include in natl_box_adjoint
195    o untangle a few ifdefs related to cost, ctrl, autodiff
196      untangel a few ALLOW_ECCO_OPTIMIZATION
197    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
198      (theta2, salt2 in ecco_cost_weights)
199    
200    checkpoint56c_post
201    o OBCS as control variables
202      - update ctrl_ad_diff.list, obcs_ad_diff.list
203      - remove balance of obcs controls from default
204      - fix index bug nobcs in ctrl_init
205      - fix dummy fields filen in ctrl_pack
206      - add dummy weights for obcs
207    o lsopt: comment out fort.94 output
208    o optim:
209      - remove unnecessary header files
210      - adjusted namelists
211      - add xerbla.F to Makefile
212    o exf:
213      - multiple modifications of exf_check_range
214      - unit change in exf_init_runoff from [m/year] to [m/s]
215    o mdsio:
216      - i/o-vector change debugLevel from debLevA to debLevB
217    
218    checkpoint56b_post
219    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
220      is called from DO_THE_MODEL_IO
221      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
222      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
223      - clean up PTRACERS_WRITE_TIMEAVE a little
224    o add another verification experiment that tests both the cfc-pkg and
225      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
226      reactive tendencies treated inline with regular timestepping
227    o testreport previously did a lousy job of comparing small numbers, so
228      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
229      implemented in the little c-progam tmp_cmpnum.c which is embedded in
230      testreport.
231    o ptracers_monitor: bug fix for MPI
232    
233    checkpoint56a_post
234    o GCHEM: finish reorganizating the package
235      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
236        (introduces another 3D-array for each passive tracer, but only if
237        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
238        gchemTendency is not needed because the timestep is done separately)
239      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
240      - GCHEM is now---more or less cleanly---separate from PTRACERS
241      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
242        so clear to me how that should be done in a general way.
243    o CFC: improve formatting of output in CFC_ATMOS
244    o PTRACERS:
245      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
246        that ALL experiments with ptracers enable can be checked. This makes
247        GCHEM_MONITOR obsolete.
248      - include a runtime parameter PTRACERS_monitorFreq that defaults to
249        monitorFreq
250      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
251    o add PTRACERS (PTR0[1-5]) to testreport output
252    o exf_check_range:
253      * default changed to .TRUE.
254      * will check values for niter0 if debLevA, every timestep if debLevB
255      * STOP in exf_check_range if 'out of range'
256      * range chosen generous to allow for potential extema
257      TBD: a version with stricter range
258           permitted range would be runtime parameters
259    o GMredi:
260      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
261      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
262      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
263    o GCHEM:
264      - move call to GCHEM_FORCING_SEP, so that it is now called before
265        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
266      - introduced a useGCHEM runtime flag and applied it everywhere.
267      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
268        this flag is now only visible within GCHEM-pkg routines.
269      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
270        be replaced by a 3D array that is computed before thermodynamics; for
271        this, the tracer ID iTracer had to be included into the parameter list
272        of ptracers_forcing
273      - set up forward_step to call gchem_forcing, that will replace
274        gchem_forcing_int in ptracers_forcing
275      - cleaning up
276    o small cleaning of exch2: remove files that are also in eesupp/src
277    
278    checkpoint56
279    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
280    o mnc: cleanup "full" files--fixes out-of-memory problem
281    o ECCO-GODAE
282      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
283      * fully merged and updated from SIO code
284        windstress sign change affects
285        - exf_inscal_[u/v]stress
286        - sign of xx_tau[u/v] adjustments
287        - signs in cost_scat
288      * ctrl_get_gen: avoid update of tau[u/v] for first few days
289      * natl_box_adjoint updated and compressed
290      * 2-level checkpoint switch added
291        (tested in EXP. 1 of natl_box_adjoint)
292      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
293    o SVD
294      * first complete, non-hacked version for SVD calculations
295      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
296        performed via direct access files admtlm_vector.it????
297        (via ctrl_[un]pack)
298      * optimcycle is used for ARPACK iteration counter
299        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
300      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
301        and add linear transforms where necessary
302      * controls are initial/final SST, SSS (can be extended; need to check
303        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
304    o mdsio: filename info to both stderr, stdout
305    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
306      from sign change
307    
308    checkpoint55j_post
309    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
310      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
311    o add consistent build directories and .cvsignore files to verification
312    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
313    o make all subroutines 30 or less characters in length for certain older
314      compilers to work (a thorough search only turns up two routines in
315      pkg/ptracers)
316    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
317      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
318    
319    checkpoint55i_post
320    o change arrays for total vertical diffusivity (2.D if explicit,
321      3.D if implicit) ; each ptracer uses its own background value.
322    o added mnc/NetCDF output capability to ocn_compon_interf
323      - added bits to verification/cpl_aim+ocn so that it can run on
324        ITRDA and other clusters without the mpirun "-wd" option
325    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
326      configuration
327    o give MNC the ability to create additional files rather than
328      exceeding a specified file size limit "MNC_MAX_FILESIZE"
329      - the default is just less than 2GB which is a practical limit
330        on many systems
331    o Compute the non-local term using either KPP vertical diffusivity (=default)
332       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
333    
334    checkpoint55h_post
335    o add verification test "vermix"
336    o remove all the *_ioinc flags and replace with the single global
337      outputTypesInclusive flag
338    o allow to set a vertical profile of vertical diffusivity for T & S
339    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
340    o useMNC moved from data.mnc to data.pkg
341    
342    checkpoint55g_post
343    o Renaming carbon AD experiments to comply with testreport conventions
344    o Updating adjoint of Held-Suarez hs94.1x64x5
345    o Fixing directives for non-ECCO forward_step, after ECCO directives
346      have been fixed to avoid recomp. of do_oceanic_phys
347      Works well for global_ocean.90x40x15,
348      but recomp. issue remains for carbon
349    o Updating adjoint output for natl_box_adjoint after
350      pkg/ecco has been modified (see taga c55d_post)
351    
352    checkpoint55f_post
353    o rename to timeave_init_fixed
354    
355    checkpoint55e_post
356    o some delicate re-shuffle of store directives to avoid one
357      extra call of do_oceanic_physics
358      affects ecco_the_main_loop.F, do_oceanic_physics.F
359      checkpoint_lev1_directives.h
360    o NB: this may break global_ocean adjoint temporarily,
361      but it is clear how to fix it. Will do later, need this now.
362    
363    checkpoint55d_post
364    o ECCO specific cost function terms (up-to-date with 1x1 runs)
365    o ecco_cost_weights is modified to 1x1 runs
366    o modifs to allow observations to be read in as
367      single file or yearly files
368    o enable to read exf forcing fields as either
369      single file or yearly files (flag useExfYearlyFields)
370    checkpoint55d_pre
371    
372    o switch between 2-level and 3-level checkpointing
373    o add ability of MNC to write local and "partial" (eg. 2D slices where
374      the full 3D field is never actually stored) arrays to NetCDF files
375      with the correct (that is, the complete multi-dimensional) set of
376      array indicies
377      - used in mom_vecinv() to write the diagFreq output
378      - tested (demonstrated) in verification/aim.5l_cs
379    o further mnc-ification
380      - add verification/lab_sea to the list with mnc setups
381      - fix undefined mnc v-names in cd_code
382      - add kpp to mnc output (both snapshot and timeave)
383    o non-hydrostatic code
384      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
385        in calc_gw.F
386      - defaults to viscAh
387      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
388        friction or Leith) in non-hydrostatic mode, as long as there is
389        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
390    o pkg/cost
391      extend simple cost functions to treat time mean quantities
392      (T,U,V) via cost_accumulate_state from cost_tile
393    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
394        be 2 times larger than the minimum size the advection scheme requires.
395        now get a perfect conservation of salt in advect_cs test-exp (updated)
396    o GGL90 (Gaspar's TKE mixed layer)
397      - add horizontal diffusion of TKE, requires exchanges in
398        do_fields_blocking_exchanges, horizontal diffusivity is zero by
399        default. In OPA there is no horizontal diffusion of TKE but the
400        mixing coefficients are computed from a horizontal average of TKE of
401        6 points or so. I think that diffusion has a little more physical
402        justification.
403      - clean up ggl90_calc in the hope of reducing memory usage (this hope
404        was in vain)
405      - mask tke-variable in ggl90_init
406    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
407    o fix biharmonic diffusion on CS-grid.
408    o more obcs stuff
409      - added obcs_external_fields_load as an alternative to the EXF-pkg option
410        for reading boundary values. This routine is called from
411        obcs_prescribe_read
412      - updated obcs_check
413      - changed sponge layer relaxation parameter units for days to seconds
414      - turned off sponge layer by default
415      - changed argument list of OBCS_CALC to myTime+deltaTclock
416      - fixed about 35 bugs in obcs_external_fields_load
417    
418    checkpoint55c_post
419    o obcs stuff
420      - new runtime flags useOBCSprescribe, useOBCSbalance
421      - re-arranged obcs_calc
422      - moved exf_getobcs to obcs_prescibe_read
423        obcs_prescibe_read is called after ORLANSKI stuff
424        and independent of it (executable can contain all).
425      - updated obcs_check
426      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
427        These may be necessary only if tangential velocities are
428        prescribed at OB, not sure, needs testing.
429    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
430      which simplifies the calls and passes the ifc check-bounds test
431    
432    checkpoint55b_post
433    o add a 2D scalar, Z location, exchange_2 routine.
434    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
435      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
436      affects advect_cs results (for the wrong reason): update output.txt
437    o use a more standard discretization for biharmonic viscosity ;
438     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
439      affects results of dome set-up: update output.txt
440    o fix gad_advection.F (CubedSphere part), back to version 1.23
441    o fix bug in mom_vi_del2uv.F (CubedSphere part).
442    
443    checkpoint55a_post
444    o merged code to
445      * prescribe/read time-dependent open boundaries
446        (works in conjunction with exf, cal)
447      * sponge layer code for open boundaries
448      * each boundary N/S/E/W now has its own CPP option
449        (healthy for the adjoint)
450    
451    checkpoint55
452    o up-to-date adjoint of previous breaks
453      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
454      - global_ocean_ebm: adjoint still needs fix (TLM ok)
455      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
456      - carbon: * remove tr1-related adjoint verification
457                * add ptracer as control variable
458    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
459      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
460    
461    checkpoint54f_post
462    o in verification/carbin/ remove experiment related to
463      ALLOW_PASSIVE_TRACER (array tr1 etc)
464      code_ad/ input_ad/ results_ad
465    
466    o add two new packages
467      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
468        + subject to optimization (memory)
469      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
470        + subject to reordering (many GOTOs in the original code)
471        + so far opps is called for every (i,j) point, and then operates in
472          the vertical; one may want to reorder the scheme in order operate in
473          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
474          fields)
475    o overhaul of IO so that we now have flags for MDSIO and/or MNC
476      - all verification tests compile and run with linux_ia32_g77
477      - defaults are compatible with current input files--nothing
478        should change if you were not previously using MNC
479      - MNC output has been added in numerous places (eg. timeave)
480        but there are still a few writes not yet do-able with MNC
481        (this is in progress)
482      - flags now allow for either/or/both use of MDSIO and MNC and
483        documentation will soon follow
484      - numerous small formatting cleanups for ProTeX
485    o add version info (via BUILD_INFO.h) to MNC and stdout
486    
487    checkpoint54e_post
488    o add two new packages
489      - pp81 (Packanowski and Philander, 1981), Richardson number and
490        stratification dependent mixing
491      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
492      - these scheme operate in a similar manner as KPP (without ghat, of
493        course), however there is only one diffusivity that is used for both
494        temperature and salinity (and passive tracers)ç
495    o add offline package
496    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
497      provided by Stephanie Dutkiewicz
498    o genmake2: add ability to search for C compilers and cleanup test output
499      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
500    
501    checkpoint54d_post
502    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
503    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
504      leading to additional shift by 5 days each year of integration
505       (i.e. leading to considerable offset over the years)
506    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
507    o start with no AB and no initial filtering (staggerTimeStep):
508      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
509    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
510      (external loading & cpl import/export stay in forward_step.F)
511    o update coupling interface to work with new staggerTimeStep
512    o change MDSIO ptracers_pickup.
513    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
514    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
515    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
516    
517    checkpoint54c_post
518    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
519      this affects (truncation error) output.txt of test-exp:
520       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
521    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
522    o change Qnet to always be the net heat flux, (+upward).
523      affects (truncation error) output of natl_box exp.: updated
524    o define the max number of passive tracers in PTRACERS_SIZE.h
525    o start to test mnc routinely in exp0
526    o add sea-ice loading (sIceLoad) as a new forcing field.
527    
528    checkpoint54b_post
529    o add testreport "-j JOBS" option for parallel builds (tested and pretty
530       impressive on Altix and Opteron systems)
531    o diagnostics can now write NetCDF files through the mnc package
532    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
533    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
534    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
535      affects (truncation error) output of lab_sea & natl_box exp.: updated
536    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
537    
538    checkpoint54a_post
539    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
540    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
541    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
542    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
543      + internal_wave (shift in writing cg2d_ini_res)
544    checkpoint54a_pre
545    
546    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
547      - modified verification/lab_sea and natl_box_adjoint accordingly
548    
549    checkpoint54
550    checkpoint53g_post
551    o prepare splitting of thermodynamics: store convect.counter in common block
552    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
553      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
554    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
555    o new parameter "nShapS": allow to treat differently S from T (nShapT)
556    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
557    o restore adjointability
558    
559    checkpoint53f_post
560    o modifications that affect AIM experiment results (update output.txt):
561      - no advection of S at top interface Nr (pkg/generic_advdiff)
562      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
563    o AIM pkg:
564      - include stability function into surf.Flux derivative relative to Tsurf
565      - calculate clear-sky radiation & surface temp. change (for diagnostics)
566    
567    checkpoint53e_post
568    o merged cylindrical coord configuration
569    o added rotating_tank experiment
570    checkpoint53e_pre
571    
572    checkpoint53d_post
573    o faulks upgraded: re-generate output.txt that have changed:
574       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
575    o Added Bryan and Lewis, 1979, vertical diffusivity profile
576    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
577    o added Sadourny discretization of Coriolis
578      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
579      - re-enabled use of omega3 (useAbsVorticity)
580    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
581      vector-invariant equations
582      - note: does *NOT* yet use same variable visc. for no-slip BC's.
583    o recoded the lateral boundary conditions for non-hydrostatic w, this time
584      hopefully without new bugs
585      - still to do: biharmonic friction for non-hydrostatic w
586    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
587    o regenerated output for global_ocean_ebm (using -ieee)
588    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
589      of mom_common/
590      - simple re-arrangement of instructions within computing loop
591    checkpoint53d_pre
592    
593    checkpoint53c_post
594    o new version of coupler for AIM+thSIce and Ocean models
595     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
596     - land: change Evaporation of snow
597     - aim with thSIce: fix bug in snow-precip.
598    o changes to calc_gw.F
599     - bug fix for w^2 term near the bottom boundary
600     - (hopefully) improve the lateral slip boundary condtions for use with
601        partial/looped cells
602      - because the bug fix changes two verification experiments anyway (exp5
603        and plume on slope), change the lateral boundary condition from half slip
604        to the value of no_slip_sides
605    o ebm package wasnt quite up to the parallel task. Fixed that.
606    o Adjoint of EBM package + verification
607      * TLM OK
608      * ADM not sufficient accuracy yet (needs further testing)
609    
610    checkpoint53b_post
611    o Commiting new energy balance model to repository
612      * package is pkg/ebm
613      * verif. is verification/global_ocean_ebm
614      * references are in ebm_driver.F
615    C      * X. Wang, P. Stone and J. Marotzke, 1999:
616    C        Global thermohaline circulation. Part I:
617    C        Sensitivity to atmospheric moisture transport.
618    C        J. Climate 12(1), 71-82
619    C      * X. Wang, P. Stone and J. Marotzke, 1999:
620    C        Global thermohaline circulation. Part II:
621    C        Sensitivity with interactive transport.
622    C        J. Climate 12(1), 83-91
623    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
624    C        Destabilization of the thermohaline circulation
625    C        by atmospheric eddy transports.
626    C        J. Climate 7(12), 1870-1882
627    o Will need long integration testing.
628    checkpoint53b_pre
629    
630    o created pkg/mom_common in preparation for variable viscosity code
631    o renamed and split ini_mnc_io
632    o pkg/land: only liquid water can diffuse or run-off
633    o AIM using land: soil wetness availability account for snow
634    o added printMapIncludesZeros to EEPARMS namelist
635    
636    checkpoint53a_post
637    o restore TAMC compatiility for exf_constants.h
638      (no usage of _d in .h)
639    o Additional storing in KPP in an attempt to fix
640      TAMC problem with adjoint of KPP code.
641      (no success...)
642      Identical code works fine with TAF.
643    o Fixed verification/natl_box_adjoint experiments.
644      Initial conditions for Experiments 4 and 5 are now
645      set to "SEAICE_initialHEFF=0", which is more reasonable,
646      and hence gives results closer to that of Experiment 2.
647      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
648    
649    checkpoint53
650    o stable checkpoint with up to date adjoint
651      TLM tests only run for 1st grdchk at the moment. Its unclear if
652      this is a code problem or a problem with resetting code for g_
653      variables that is being autogenerated wrong.
654      Otherwise:
655       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
656       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
657         are both still in chaos following their security messes.
658    
659    checkpoint52n_post
660    o various build (mostly genmake2) changes including:
661      - ability to build/run more easily within Cygwin and MacOS X
662      - more complicated Makefiles with a stronger dependence on Gnu Make
663    o pkg/seaice modifications
664      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
665        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
666        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
667      - changed proxy for geostrophic velocity and updated
668        verification/lab_sea/results/* accordingly
669      - removed ADI dynamic solver from pkg/seaice
670      - replaced all occurrences of 1/CSTICE or 1/CSUICE
671        they caused a segmentation fault under certain circumstances
672      - removed unused field WATR
673    o bug fix in exf-package:
674      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
675         now reflect that.
676    o small fixes in the cal-package:
677      - set reference date to first of January for the 'model'-calendar
678      - failing of cal_CheckDate in cal_FullDate now actually results in a
679        warning
680    o small modifications in exf-package to increase flexibility:
681      - change climtempfreeze from a constant to a runtime parameter that
682        is specified in data.exf_clim (default = -1.9)
683      - introduce runtime parameter windstressmax (default = 2.0) that is
684        specified in data.exf
685    o fix in pkg/thsice:
686      - update Evap (Tsf changes) to be consistent with Latent heat flux
687      - maintain snow precipitation unchanged (even if Tsf >=0).
688     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
689    
690    checkpoint52m_post
691    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
692      this does not change any of the results, because myIter=0 in swfrac always
693      lead to jwtype=2 (the default anyway), but the call makes little sense
694      as a default
695    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
696    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
697      atmospheric model (AIM) to use it ; add a "slab ocean" component.
698    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
699    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
700    o extending useSingleCpuIO option to work with new exch2 I/O format
701      - old-style, missing-tile I/O is still accessible by defining CPP
702        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
703    o monitor package can write to NetCDF files and/or STDOUT
704    o fix re-definition bug in MNC_GRID_INIT_ALL()
705    o doc/api_reference added
706      - a framework for building an API Reference Manual using all
707        the "protex" comments embedded in the code
708      - see pkg/generic_advdiff, pkg/mnc for examples
709    o MNC:
710      - make myThid the last argument for all subroutines
711      - new default for the grid files: NO halos
712      - add useMNC and other run-time flags
713      - separate per-file-group handling of the unlimited dimension
714      - early initialization of MNC w/ flags read at the eeboot stage
715        and lookup tables set in initialize_fixed
716      - write all MNC output to a freshly-created directory
717    o thermodynamics sea-ice (thsice) is now tested with testreport.
718    o test exp. advect_cs: use the standard cs32 grid ; update output.
719    o Added functionality to grdchk:
720      pick global i,j,k position (or nearest wet) where to perform check.
721    
722    checkpoint52l_post
723    o new land formulation:
724      a) use ground enthalpy as prognostic variable to ensure exact
725         energy conservation.
726      b) account for water temperature and for latent heat of freezing
727         in all processes (rain, run-off, ground storage)
728      c) compute surface and ground temperature implicitly.
729    o aim_v23 modification for new land model:
730      a) Treat separately land / ocean / sea-ice surface fluxes
731         to allow implicit computation of land & sea-ice surface temp.
732      b) add snow precipitation.
733    checkpoint52l_pre
734    
735    o fix problem (when 1 tile is empty) in min/max monitor.
736    o fix bug in timeAve (u,vZetatave in common block)
737    o no restoring terms under ice for pkg/seaice
738    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
739    o bug fix for pkg/seaice pickups
740    o change MNC call locations and add coordinate attributes
741    o mask vorticity at the corner ; affects global_ocean.cs output
742    o fix ini_curvilinear_grid ; test CS experiments with mpi
743    o aim.5l_cs: modify sea-ice fraction input file ; update output
744    o exf: Adding simple range check routine for exf fields after read
745    
746    checkpoint52k_post
747    o removed top-level directory "diags"
748      - we migrated these functions to pkg/timeave a long time ago
749    o fixed bug introduced in pkg/monitor
750    o accuracy ctrlprec = 32 insuffient for gradient checks using
751      averaged fields (I/O via cost_averages)
752      -> use ctrl.h in active_file*.F to control I/O precision.
753    o paramter list of CALL ADTHE_MAIN_LOOP
754    o added initial do_the_model_io to ecco
755    o set all ...Freq to zero after cost_final
756      taveFreq, dumpFreq, pChkptFreq
757    o MAIN and ECCO differentiability restored
758    
759    checkpoint52j_post
760    o fix nchklev in tamc.h for global_ocean...
761    o Bringing flow and store directives up-to-date
762    o Really weird thing!
763      call do_the_model_io from the_main_loop with parameters
764      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
765      TAF places a faulty re-call of initialise_varia
766      after cost_final call which should not be there!
767    checkpoint52j_pre
768    
769    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
770      error messages
771    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
772    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
773      debug output
774    o modfied mdsio_writefield.F to handle non-global files under exch2
775    o update AIM Cubed-Sphere exp (aim.5l_cs):
776      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
777    o update AIM Equatorial Channel exp:
778      use standard aim_v23 pkg and change the SST fields to be more realistic.
779    o globalFile now works with exch2
780    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
781      mon_vort3.F to make exch2 friendly with >1 tile per cube face
782    o limit timeave output for hi-res integrations
783    
784    checkpoint52i_post
785    o removed CPP_EEOPTIONS.h from verification/*/code
786    o updated the tiling for global_ocean_pressure
787    checkpoint52i_pre
788    
789    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
790      the old pkg/aim).
791    
792    checkpoint52h_pre
793    o shortened offending lines in exch2_send_rx?.template
794    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
795    o genmake2: add build & execute test for NetCDF code
796    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
797      old grid files, moved CPP_EEMACROS.h to pkg/exch2
798    o added useSingleCPUIO flag to monitor.F and mon_out.F
799    o added temporary hack for sea-ice dynamics on the cube:
800      metric terms are ignored and it is assumed that
801      there is no sea-ice on cube faces 1, 2, 4, and 5.
802    
803    checkpoint52f_post
804    o added exch2 cube routines to pkg/exch2
805    o modified hs94.cs-32x32x5 to use it
806    o added new grid files to hs94.cs-32x32x5
807    checkpoint52f_pre
808    
809    checkpoint52e_post
810    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
811      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
812    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
813      to work with implicit vertical advection and AB ;
814    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
815    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
816     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
817    checkpoint52e_pre
818    
819    o fix bug in impldiff when Nr=1 or Nr=2.
820    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
821    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
822    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
823      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
824    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
825    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
826    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
827    
828    checkpoint52d_post
829    o re-tiled many expts to allow comparison in multi-processor mode
830      - updated output accordingly
831      - changed hs94.128x64x5 to use intial T from file rather than use the
832        random number generator
833    o add infrastructure in model routines for fizhi and gridalt packages
834    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
835    o changes to permit hi-res, cubed-sphere, configuration
836      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
837      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
838      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
839        of surface winds for the cube
840      (A verification experiment, based on global_ocean.cs32x15, but with
841       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
842       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
843       complete with example surface forcing files and matlab scripts to look
844       at the output and compare it with that of global_ocean.cs32x15.)
845    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
846       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
847       to conform to the common rule.
848    o check-in the first version of the coupler + interfaces for multi-components
849       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
850       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
851       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
852       - ocean and atmos. share the same horizontal grid (no interpolation).
853       - exchanges between component and coupler is done in forward_step
854    o new verification experiment, cpl_aim+ocn:
855       coupled ocean - AIM atmosphere on cs32 grid.
856    
857    checkpoint52d_pre
858    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
859    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
860    
861    checkpoint52c_post
862    o Fixing OPTIONS files for use of exf:
863      - ALLOW_ECCO not needed
864      - ECCO_CPPOPTIONS.h should not be included from
865        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
866        as has been the case in the past
867      - All cal/exf related options are currently set in
868        single header file. Should remain so until we
869        agree on a consistent new policy.
870    o Removed all CPP options for cal package.
871      cal has no more CPP options.
872    o modified STOREs in GAD_ADVECTION
873    o corrected key comp. for passkey
874    
875    checkpoint52b_post
876    o new version: "thsice" of thermodynamic sea-ice pkg:
877     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
878     - modify fluxes but do not change theta directly;
879     - light cleaning of bulk_force pkg (still needed with thsice).
880     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
881       + output_thsice.txt to test thsice & bulk_force pkgs.
882    o put back grid & coriolis monitor output.
883    checkpoint52b_pre
884    
885    o call "do_the_model_io" at the beginning (=> dump initial state)
886    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
887    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
888      (need info on NUMBER_OF_PTRACERS)
889    o missing PTRACERS headers in some routines
890    o default tamc.h in pkg/autodiff supposed to crash
891      to ensure proper customization
892    
893    checkpoint52a_post
894    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
895      - moved surfaceTendencyTice from pkg/seaice to main code
896      - subroutine FREEZE_SURFACE now limits only surface temperature
897        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
898        => new output.txt for global_ocean.cs32x15 & global_with_exf
899      - keep the old version of FREEZE for backward compatibility;
900        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
901      - corresponding modifs for TAF directives
902    o added surface flux output variables to TIMEAVE_STATVARS
903    o time-averaged output for pkg/ptracers
904    o fix problem with ECCO-related divided adjoint
905      snapshot file was missing some ad-variables,
906      but no warning issued by TAF
907    
908    checkpoint52a_pre
909    o some bug fixes for #undef REAL4_IS_SLOW
910    
911    checkpoint52 = ecco_c52_e35
912    o after testing adjoints of checkpoint51u_post
913    
914    checkpoint51u_post
915    o this is the post-merge tag of the ecco-branch
916      (needs another clean checkout and re-testing)
917    o various natl_box_adjoint configs and results
918      but no input fields
919    o obcs adjoint not yet merged!
920    o adding ECCO global 1x1 and 2x2 degree configs
921    o updated/extended some store directives for seaice
922    o pkg/ecco now containes ecco-specific part of cost function
923    o top level routines the_main_loop, forward_step
924      supersede those in model/src/
925      previous input data.cost now in data.ecco
926      (new namelist ecco_cost_nml)
927    o in ctrl/ cleaned some cross-dependencies and updated CPP options
928    
929    checkpoint51t_post
930    o this is the pre-merge tag of the ecco-branch
931    
932    checkpoint51s_post
933    o cleanup: removed various obsolete #define-s
934    o pkg/grdchk
935      - renamed 'ph-grd 3' to 'grad-res'
936      - merged from ecco-branch
937        (remaining bug fixes for obcs gradient checks)
938      - additional high-precision output for testreport
939        (grep for 'precision_grdchk_result')
940    
941    checkpoint51r_post
942    o cleaned up or removed CPP_OPTIONS.h files
943    o updated results for some of the tests to reflect the new
944      optfiles (-ieee: -O0 instead of -O3)
945    
946    checkpoint51q_post
947    o cd_code:
948      - moved cd_scheme.F -> cd_code_scheme.F
949      - separate read_checkpoint from cd_code_ini_vars.F
950      - separated cd_code part from write_checkpoint
951      - updated AD_SOURCE, generated .flow
952      - added CD_CODE_VARS.h to the_main_loop
953      - Moving cd_code specific store dir.s to pkg/cd_code
954    o ctrl package totally restructured
955      - pack/unpack now optional and decoupled from
956        xx_/adxx_ I/O
957      - ctrl_pack/unpack cleaned
958        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
959      - confined inclusion of AD_CONFIG.h to where necessary.
960    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
961    
962    checkpoint51p_post
963    o create initial cd_code package
964      - WARNING: the initialization of fields within packages
965        is broken because INI_FIELDS (where READ_CHECKPOINT is
966        called) is called *before* PACKAGES_INIT_VARIABLES.
967        This seems to be backwards since
968        1) its important to initially zero the entire field including
969           the "halo" region
970        2) zeroing needs to be done *before* reading pickup info
971           and the pickup call might or might not happen in any
972           particular run
973      - this needs an overhaul for R2
974    o cleanup verification/*/code/GMREDI_OPTIONS.h
975    o cleanup testreport
976    
977    checkpoint51o_post
978    o bringing AD-related verif's up to date with genmake2
979      - carbon/
980      - global_ocean.90x40x15/
981      - hs.94.1x64x5/
982      - (front_relax/ )
983    o (more) consistent directory structure for AD-related verif.'s
984    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
985    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
986    o bug fix in find_alpha.F for MDJWF:
987      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
988        change rho -> rho-rhoConst
989      - replace call find_rho to find_rhonum
990    o initialisation of rFlx extended to full array (required by TAF)
991      and shifted to thermodynamics
992    o removed PTRACERS.h in ptracers routine
993    o added surfacetendencyPtr to S/R parameter list pracers_forcing
994    o Correcting initialisations for fVerU, fVerV.
995    o helping TAF to recognize dependency on kUp for
996      fVerU, fVerV
997    o Replacing delZ by delR in pkg/ctrl/
998    checkpoint51o_pre
999    
1000    o undid all of cp51 pending some cleanups and discussion
1001    o added the [#include "AD_CONFIG.h"] statement to all files that need
1002       it for adjoint/tl #defines
1003     o re-worked the build logic in genmake2 to support AD_CONFIG.h
1004     o removed tools/genmake since it no longer works
1005    
1006    checkpoint51n_post
1007    o modifications to make FREEZE flux visible to pkg/kpp
1008      - moved surfaceTendencyTice from pkg/seaice to main code
1009      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
1010      - subroutine FREEZE now limits only surface temperature
1011        (this means new output.txt for global_ocean.90x40x15,
1012         global_ocean.cs32x15, and global_with_exf)
1013    o added surface flux output variables to TIMEAVE_STATVARS
1014    
1015    checkpoint51n_pre
1016    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
1017    o added [#include "AD_CONFIG.h"] to all files that use the following
1018      defines:
1019      - ALLOW_ADJOINT_RUN
1020      - ALLOW_TANGENTLINEAR_RUN
1021      - ALLOW_ECCO_OPTIMIZATION
1022    
1023    checkpoint51m_post
1024    o incorporating changes to get TAMC/TAF working in genmake2
1025      - added new TAMC/TAF targets to the Makefile
1026      - various cleanups related to package handling
1027      - these changes should have no impact on the forward model
1028    
1029    checkpoint51l_post
1030    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
1031     - faster algorithm for cal_addtime.F
1032     - higher precision arithmetic, where needed
1033     - pkg/exf *startdate variables changed from calendar date to
1034       model integration time
1035    
1036    checkpoint51l_pre
1037    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
1038    o enable to apply restoring on S & T only in a latitude band.
1039    o update output (external_forcing_surf modif. change truncation errors)
1040       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
1041    
1042    checkpoint51k_post
1043    o change default to: useNHMTerms=.FALSE.
1044     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
1045       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
1046     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
1047        exp1, ideal_2D_oce
1048     - change data file of oceanic exp (leave the results unchanged for now)
1049       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
1050    o set gravitySign automatically according to the vertical coordinate used
1051      (and change sign: back to "logical" value: +1 when R increases downward)
1052    o added an include barrier to the default CPP_OPTIONS.h and
1053      removed the #include "PACKAGES_CONFIG.h" from it
1054    o fix a bug in mom_fluxform (from chk51j_post)
1055    
1056    checkpoint51j_post
1057    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
1058    o adjusted some flow directives (dynamics, thermodynamics)
1059    o added cubed-sphere case to test cost function
1060    o heckpoint_lev?_directives.h now include
1061      pkg-specific directives, whenever those are enabled.
1062    o Moving pkg-specific flow directives to corresponding pkg
1063      Moving pkg-specific differentiation list to corresponding pkg
1064      Moving pkg-specific checkpoint-lev storing to corresponding pkg
1065      ---> conventions are
1066           - pkg_ad.flow
1067           - pkg_ad_diff.list
1068           - pkg_ad_check_lev?_dir.h
1069    
1070    checkpoint51i_post
1071    o merge of the branch-genmake2
1072      - knowingly breaks the older genmake
1073      - automatic generation of all ALLOW_${PKG_NAME} defines
1074      - new testreport supersedes older testscript
1075    o large number of package inclusion and header cleanups
1076    checkpoint51i_pre
1077    
1078    o new output for adjoin of global ocean vector invariant
1079    o fix for checkpoint of thermodynamic seaice and bulk_force
1080    o Steph gchem various cleanups
1081    
1082    checkpoint 51h_pre
1083    o fixed some single quotes
1084    o modify gchem pkg to be more versatile
1085    o modifications to clean up dic pkg
1086    o add pkg/cfc
1087    
1088    checkpoint51g_post
1089    o provide links for ARPACK and ADM*TLM
1090    o start removing verification/vero/
1091    o update AD-related stuff
1092      (in particular some IF-statements in model/src/ routines)
1093    o adding to verification/global_ocean.90x40x15/ adjoint of
1094      vector invariant setup
1095    
1096    checkpoint51f_post
1097    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
1098    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
1099      of tracer Green's fucntions for ocean inversion project.
1100    
1101    checkpoint51f_pre
1102    o Added on-the-fly spatial interpolation capability
1103        "USE_EXF_INTERPOLATION" to pkg/exf.
1104      - This is a temporary Cartesian-grid hack until
1105        the super-duper ESMF coupler becomes available.
1106      - See verification/global_with_exf/README for usage example.
1107      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
1108        flags and modified pkg/seaice accordingly.
1109    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
1110        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
1111        non-local transport term.
1112    
1113    checkpoint51e_post
1114    o pkg/mom_vecinv:
1115      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
1116      - add time-ave diagnostic of vorticity advection.
1117    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
1118    o atmospheric geopotential: - include water vapor effect;
1119                                - use p^kappa in p* scaling.
1120    o land pkg: read initial state from files.
1121    o AIM : add stratospheric drag in the upper level
1122    
1123    checkpoint51d_post
1124    o change function ILNBLNK (=> last non-blank char.) to return zero
1125      (instead of the string length) when the string. char is empty
1126    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
1127    o modif's to restore TAMC compatibility
1128      - avoid "_d" constructs in PARAMETER declarations
1129      - avoid interrupting lines by comment lines
1130    o Use cluster local disks for purely local I/O
1131      vs. globally visible disks needed for ctrl stuff
1132      (merged from ecco-branch)
1133      - new active_file_loc... and mdsio_..._loc routines
1134      - affected packages: autodiff, ctrl, grdchk, mdsio
1135    
1136    checkpoint51c_post
1137    o introducing integer flag debugLevel
1138      - debLevZero: suppress all output
1139      - debLevA: standard
1140      - debLevB: equivalent to current debugMode=.TRUE.
1141    o introducing pathname variable mdsioLocalDir for mdsio
1142      that can be specified at runtime
1143      (relevant for cluster I/O to local disk)
1144    `
1145    >>>checkpoint51b_post
1146    adjoint of ptracers
1147    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
1148    o extended state in checkpoint_lev?, etc.
1149    o alternative ctrl/cost with tr1 or ptracer
1150    o new comlev1_bibj_ptracers
1151    o new ptracers.flow
1152    o made ptracers_forcing same as external_forcing_s
1153    o added verification for adjoint with ptracers
1154      - adm. grdchk fail so far
1155      - tlm. grdchk OK
1156      - checked tapelev/comlev recomputations: OK
1157    <<<checkpoint51b_pre
1158    
1159    checkpoint51a_post
1160    o added code for biogeochemistry package
1161      - new pkgs: dic, gchem
1162      - new subroutine in ptracers
1163    o modify code for biogeo packages
1164      - in model/src and pkg/ptracers
1165    
1166    checkpoint51
1167    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
1168      - autodiff, ctrl, exf, grdchk, seaice
1169      kept separate packages
1170      - cost, ecco, obcs
1171    o updating verification/internal_wave, verification/lab_sea
1172      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
1173    
1174    checkpoint50i_post
1175    o Preparing next differentiable checkpoint and sync
1176      of MAIN vs. ecco-branch
1177      - 1st step: this one is differentiable
1178      - 2nd step: next(! not this) checkpoint will have updated packages
1179                  from ecco-branch)
1180    
1181    checkpoint50h_post
1182    o new package "land": provide surface BC for AIM.
1183    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
1184    o AIM: use true log-P extrapolation for near surface temp (= as in
1185        F.Molteni paper) ; update aim.5l_cs output.
1186    o New variable in PARM03 for more flexible pickups
1187    o somewhat cleaned package initialisation sequence for
1188      ctrl/ cost/ ecco/ in packages_... routines
1189    
1190    checkpoint50g_post
1191    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
1192      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
1193      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
1194        made the default because of faster convergence than ADI
1195    
1196    checkpoint50f_post
1197    o exf totally restructured
1198      - replaced all exf_set_ routines by one generic exf_set_gen.F
1199        and made sure it's still differentiable
1200      - split exf_getffields.F into new exf_bulkformulae.F
1201      - exf_inscal_/exf_outscal_ suffixes consistent with field names
1202      - updated adjoint/makefile and relevant verif. accordingly
1203    
1204    checkpoint50f_pre
1205     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
1206          + change Evap over land. (update aim.5l_cs output)
1207     o added missing .cvsignores and made uniform across expts
1208     o changed configuration of tidal_basin_2d expt
1209     o added pkg/debug functions for tracing code in fatal crashes
1210     o tidied pkg/monitor to use MONITOR_OPTIONS.h
1211     o new fn in pkg/monitor to stop model if solution grows too big
1212     o removed lots of single quotes from comments
1213    
1214    checkpoint50e_post
1215    o make KPP work with PTRACERS
1216     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
1217       nearly a copy of kpp_transport_s
1218     - there is no analogue to SurfaceTendencyS, so I have to use
1219       gPtr(of the surface layer) instead
1220    o add a new platform SunFire+mpi (SunFire 15000) to genmake
1221    checkpoint50e_pre
1222    
1223    checkpoint50d_post
1224    o change kpp output from multiple-record state files to single-record state
1225      files analogous to write_state.F
1226    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
1227      analogous to the cg2d-related output.
1228    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
1229      so that writing to internal file fn (with length 512) fails.
1230    checkpoint50d_pre
1231    
1232    checkpoint50c_post
1233    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
1234    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
1235    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
1236    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
1237    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
1238    
1239    checkpoint50c_pre
1240    Merging from release1_p13:
1241    o bug fix for pkg/seaice dynamic solver
1242    o Added SEAICE_initialHEFF to pkg/seaice
1243    
1244    checkpoint50b_post
1245    o store u*,v* in gU,V instead of in guNm1,gvNm1
1246    o in order to put the momForcing out of the Adams-Bashforth:
1247      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
1248      to timestep.F
1249    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
1250    o re-generate output for highly sensitive test-exp:
1251       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
1252    
1253    checkpoint50b_pre
1254    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
1255    o corrected CPP option mismatch in exf_Bulk... functions for case
1256      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
1257    
1258    checkpoint50a_post
1259    o Bug fix for merging between c50 and KPP.
1260      ikey was passed from thermodynamics to kpp_calc via
1261      common block rather than being recomputed in kpp_calc,
1262      in contradiction with new key itdkey.
1263      New key ikppkey created, and tamc.h headers updated.
1264    
1265    checkpoint50
1266    - 2nd step of merge with ecco-branch:
1267      merge changes in ecco-branch back into main trunk
1268    - bug fix in find_alpha
1269    - more storing in gmredi_calc_tensor.F, kpp_routines.F
1270    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
1271    - merged some sliced AD support routines
1272    
1273    checkpoint49
1274    merged from ecco-branch:
1275    o exf:
1276      - Enable initialisation of forcing fields to constant
1277        (runtime) values.
1278      - in exf_getffields.F
1279        Reduce i-/j-loop to interior domain, discarding overlaps.
1280        That also fixes wrong TAF-key computations for key_1, key_2
1281        with bulf formulae.
1282      - exf_init.F modify #ifdef for exf_init_evap
1283      - exf_getffieldrec.F, ctrl_getrec.F
1284        The following INT-usages are not safe:
1285          fldsecs  = int(fldsecs/fldperiod)*fldperiod
1286          fldcount = int(fldsecs/fldperiod) + 1
1287        and were modified.
1288    o autodiff: checkpoint_lev...
1289      - updated storing for bulk formulae (some arrays were missing)
1290      - added state for seaice package
1291      - synchronized with main branch
1292    o DIVA:
1293      Modif.s in
1294      - the_main_loop.F
1295      - the_model_main.F
1296      and added cost_final_restore.F cost_final_store.F
1297      o With these changes, it is possible to fully separate
1298        the first forward run to compute the cost function (mdthe_main_loop)
1299        and adjoint runs over individual DIVA intervals (adthe_main_loop)
1300        into separate model executions.
1301        This enables better tuning of DIVA to given queue sizes.
1302      o Loss of cost function value in consecutive DIVA runs is
1303        fixed by storing to 'costfinal' file.
1304      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
1305        beginning/end of adjoint integration is accounted for.
1306      The current changes apply to TAF-1.4.26.
1307      TAF has one remaining bug, requiring one manual change
1308      (see MITgcm manual).
1309    o cal: synchronized between MAIN and ecco-branch
1310    
1311    checkpoint48i_post
1312    o Changes to restore differentiability of code w.r.t. previous tag
1313      (mostly adding new routines to make list and replacing
1314      pressure by totPhiHyd).
1315    o Updated and merged grdchk package
1316      - has both ADM and TLM checks
1317      - works for single- and multi-proc.
1318      - output cleaned
1319      - worked successfully for parallel DIVA
1320    o genmake:
1321      - Adding -platform=SP4
1322      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
1323    o Modif. for DIVA:
1324      ctrl_unpack should not be called in intermediate DIVA interval.
1325      (similar thing would apply for active files such as
1326      tbar, sbar, psbar, which should not be reinitialised;
1327      only relevant for ecco-branch)
1328    
1329    checkpoint48h_post
1330    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
1331    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
1332    o Added SEAICE_initialHEFF to pkg/seaice
1333    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
1334    
1335    checkpoint48g_post
1336    --- EOS:
1337    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
1338      store total Potential in totPhyHyd for diagnostics & EOS.
1339    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
1340    --- Pressure/geopotential gradient:
1341    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
1342    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
1343      ( changes results of global_ocean_pressure )
1344    o NLFS + z-coord.: add eta*Rho' contribution.
1345    o accurate phiHyd when using interface-W at the middle between 2 centers
1346     ( changes results of ideal_2D_oce )
1347    o includes r* 2nd term in potential gradient.
1348    
1349    checkpoint48f_post
1350    Merging from release1_p12:
1351    o Modifications for using pkg/exf with pkg/seaice
1352      - improved description of the various forcing configurations
1353      - added basic radiation bulk formulae to pkg/exf
1354      - units/sign fix for evap computation in exf_getffields.F
1355      - updated verification/global_with_exf/results/output.txt
1356    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
1357      (SBO) core products, including oceanic mass, center-of-mass,
1358      angular, and bottom pressure (see pkg/sbo/README.sbo).
1359    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
1360      to avoid negative values in shallow regions.
1361      - updated verification/natl_box/results/output.txt
1362      - updated verification/lab_sea/results/output.txt
1363    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
1364    o Added useSingleCpuIO option (see PARAMS.h).
1365    o Updated useSingleCpuIO option in mdsio_writefield.F to
1366      work with multi-field files, e.g., for single-file pickup.
1367    o pkg/seaice:
1368      - bug fix in growth.F: QNET for no shortwave case
1369      - added HeffFile for specifying initial sea-ice thickness
1370      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
1371    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
1372      kpp_transport_t.F, forward_step.F, and the_main_loop.F
1373    o pkg/seaice:
1374      - adjoint-friendly modifications
1375      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
1376    
1377    checkpoint48e_post
1378    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
1379    o dynamics: change definition of computational domain & adapt mom_fluxform
1380      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
1381    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
1382        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
1383        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
1384        global_ocean.90x40x15 global_with_exf global_ocean_pressure
1385        inverted_barometer solid-body.cs-32x32x1
1386      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
1387    
1388    checkpoint48d_post
1389    o in preparation for r*:
1390     a) use pre-computed gradient of hydrostatic potential:
1391        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
1392     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
1393        => affects results of glob_oce_pressure (different truncation error)  
1394      update output.txt of ideal_2D_oce & global_ocean_pressure
1395    
1396    checkpoint48d_pre
1397    o in preparation for r*:
1398      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
1399      pass the 2 comp. of the grad. as arguments to momentum S/R.
1400      but for the moment, only used if it does not change the results.
1401    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
1402    
1403    checkpoint48c_post
1404    Modifications in treatment of initial flux forcing controls
1405    to avoid extra storing of flux fields.
1406    
1407    checkpoint48c_pre
1408    o Added tidal_basin_2d experiment (currently 1D!)
1409    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
1410    
1411    checkpoint48b_post
1412    o r* coordinate added in #ifdef NONLIN_FRSURF block.
1413     (modification to pressure gradient not yet implemented)
1414    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
1415      (for U & V) that are used for vertical advection of momentum.
1416    
1417    checkpoint48a_post
1418    o In preparation for r*, use temp. array to compute vertical transport
1419       in flux-form momentum pkg. => change results of few test-exp.
1420      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
1421                        lab_sea, natl_box & plume_on_slope
1422    
1423    checkpoint48
1424    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
1425    
1426    checkpoint47j_post
1427    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
1428    o moved adexch from forward_step to addummy_in_stepping
1429    o added exch in ctrl_map_...
1430    o aveFreq.=0. at end of cost_final to avoid overwrite in
1431      reverse checkpointing loop
1432    o Yet more changes in gmredi:
1433      * adgmredi_calc_tensor
1434        avoiding all recomputation of gmredi_slope_limit
1435      * adgmredi_x/y/rtransport
1436        added flag for excessive storing to avoid recomp. of
1437        u/v/rtans, dTdx/y/z
1438        -> this is not really necessary and very memory-consuming
1439      * adgmredi_slope_psi:
1440        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
1441      * gmredi_slope_limit
1442        re-activated full calculation of taperfct for case 'ac02'
1443    o updating verification/ adjoints of carbon, global_ocean.90x40x15
1444    
1445    checkpoint47i_post
1446    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
1447    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
1448      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
1449    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
1450    o gmredi: fix few bugs.
1451    
1452    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
1453    This will be a good checkpoint to plug into the ecco-branch.
1454    o few modif.'s to get latest version adjointed
1455      (mainly kick out code in ini_linear_phisurf)
1456    o modif's to run adjoint with exactConserv
1457    o case GM_BOLUS_ADVEC should be cleaned
1458      S/R gmredi_slope_psi should be cleaned
1459    o verification/carbon now has exactConserv=.TRUE.
1460    
1461    checkpoint47g_post
1462    o time-average AIM output: becomes independent from statvars time-average
1463      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
1464    o After TAF bug fix:
1465      Tested adjoint of gmredi package.
1466      Tests were done with checkpoint47 rather than with latest
1467      checkpoint47f_post since the latter is broken for the adjoint
1468      verification/carbon/ contains both ADM and TLM gradient checks.
1469    Here they are, before they get changed/lost/stolen.
1470    Mostly modif.'s to fix numerical sensitivities.
1471    Gradient checks OK for
1472    - GM_taper_scheme:
1473      * clipping
1474      * ac02
1475      * linear
1476      * glw91
1477      * dm95
1478      * ldd97
1479    - GMREDI_OPTIONS:
1480      * GM_VISBECK_VARIABLE_K
1481      * GM_NON_UNITY_DIAGONAL
1482      * GM_EXTRA_DIAGONAL
1483      * GM_BOLUS_ADVEC
1484    in conjunction with data.gmredi parameters to be checked in
1485    in a few minutes under verification/carbon/code/
1486    
1487    checkpoint47f_post
1488    Merging from release1_p10:
1489    o modifications for using pkg/exf with pkg/seaice
1490      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
1491        and SEAICE_EXTERNAL_FLUXES
1492      - pkg/exf CPP options EXF_READ_EVAP and
1493        EXF_NO_BULK_COMPUTATIONS
1494      - usage examples are Experiments 8 and 9 in
1495        verification/lab_sea/README
1496      - verification/lab_sea default experiment now uses
1497        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
1498    
1499    checkpoint47e_post
1500    o created a tag prior to creating a branch
1501    
1502    checkpoint47d_post
1503    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
1504      at the bottom boundary had an erroneous half slip boundary condition
1505    o added bottom drag and no slip boundary condition capabilities to
1506      oceanic pressure coordinates code
1507    o added new verification experiment global_ocean_pressure, this experiment is
1508      also described in the tutorial section of the manual
1509    checkpoint47d_pre
1510    
1511    checkpoint47c_post
1512    o Added a verification experiment for a global cubed-sphere ocean run
1513      -  verification/global_ocean.cubed32x32x30
1514      -  uses pkg/therm_seaice and pkg/bulk_forcing
1515    
1516    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
1517    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
1518      when using P-coordinate; only implemented for atmospheric config.
1519    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
1520      NOTES: requires option NONLIN_FRSURF to be "#define".
1521    o update advect_xz/results/output.txt (left from checkpoint44g_post)
1522    
1523    checkpoint47b_post
1524    Merging from release1_p9:
1525    o pkg/seaice
1526      - removed GOTO's and added taf directives
1527      - double precision constants to reduce the g77 (Linux)
1528        to F77 (SGI) differences reported in release1_p8
1529    o tools/genmake
1530      - added SGI options
1531    o verification/testscript
1532      - updated to that of checkpoint47a_post
1533    o verification/global_ocean.90x40x15/input/eedata
1534      - modified for SGI f77 compatibility
1535    o verification/lab_sea
1536      - added description of sea-ice model
1537      - added missing matlab routines
1538      - added test of thermodynamics parallelization
1539    
1540    checkpoint47a_post
1541    o new pkg: aim_v23
1542     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
1543       for now, keep the same surface forcing as before.
1544     - Part-Cell implemented into AIM; check that Heat & Water are conserved
1545     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
1546     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
1547    o add diagnostic of surface correction term in monitor output
1548    
1549    o bulk_force and therm_seaice
1550    - Two packages:  bulk_force (Bulk forcing)
1551      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
1552    - Earlier integration from Stephaine Dutkiewicz
1553      and Patrick Heimbach.
1554    - Two ifdef statements for compile time,
1555       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
1556    
1557    checkpoint47
1558    differentiable version of checkpoint46n_post
1559    o bug fix in quasihydrostaticterms
1560    o * "clean" adjoint code (in terms of extensive recomputations)
1561        can now be obtained for all GMREDI options (i.e. for
1562        - GM_VISBECK_VARIABLE_K
1563        - GM_NON_UNITY_DIAGONAL
1564        - GM_EXTRA_DIAGONAL
1565        - GM_BOLUS_ADVEC )
1566      * However, wrong gradient check problem remains unsolved.
1567      * New CPP options have been introduced for different
1568        tapering schemes
1569    o external_fields_load now part of differentiation list
1570    o pressure needs multiple storing;
1571      would be nice to have store_pressure at beginning or
1572      end of forward_step, e.g. by having phiHyd global (5-dim.)
1573      (NB: pressure is needed for certain cases in find_rho,
1574      which is also invoked through convective_adjustment).
1575    o recomputations in find_rho for cases
1576     'JMD95'/'UNESCO' or 'MDJWF' are OK.
1577    o #define ATMOSPHERIC_LOADING should be differentiable
1578    o ini_forcing shifted to begining of initialise_varia
1579    o Incorporating QNVS line search routines into MITgcm
1580      (this is separate code, and therefore not under pkg)
1581      lsopt/, optim/
1582    o Updated verification/carbon/
1583      - #define GM_VISBECK_VARIABLE_K
1584      - GM_taper_scheme    = 'ldd97'    
1585    
1586    checkpoint46n_post
1587    Merging from release1_p8:
1588    o verification/natl_box:
1589      updating new external_fields_load routine
1590    o New package: pkg/seaice
1591      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
1592      The sea-ice code is based on Hibler (1979-1980).
1593      Two sea-ice dynamic solvers, ADI and LSR, are included.
1594      In addition to computing prognostic sea-ice variables and diagnosing
1595      the forcing/external data fields that drive the ocean model,
1596      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
1597      The implied surface heat flux is then stored in variable
1598      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
1599      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
1600      non-local transport term.  Because this call precedes model
1601      thermodynamics, temperature under sea-ice may not be "exactly" at
1602      the freezing point by the time theta is dumped or time-averaged.
1603      N.B.: fairly large differences in accuracy occur across
1604            different platforms/compilers; comparison between
1605            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
1606            generated output gives:
1607       T           S           U           V
1608      C D M    c        m  s        m  s        m  s        m  s
1609      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
1610      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
1611      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
1612    
1613      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
1614    o GAD:
1615      - generated new common blocks to account for call of
1616        same gad routines with differing traceridentities
1617        (needed to modify tracerIdentity indices in GAD.h)
1618      - generated separate common blocks for case useCubedSphereExchange
1619        (Department of Futurology)
1620      - parameter lists to gmredi_?transport: added tracerIdentity
1621      - added new key indices to tamc.h
1622    o external_fields_load:
1623      - added this routine to TAF list
1624      - needed to make some common blocks global and additional storing
1625        along the same lines as exf package (checkpoint_lev?_directives.h)
1626    o exf:
1627      updated external forcing package
1628      - bug fixes carried over from ecco-branch
1629        (missing OBCS_OPTIONS.h in two routines)
1630      - enable easy to use "no forcing".
1631      - added exf I/O for atmospheric loading
1632      - added exf I/O for runoff data
1633      - transfered scaling between exf <-> MITgcm to exf namelist
1634    o Adding new verification experiment global_with_exf.
1635      This verification experiment is almost identical to the
1636      global_ocean.90x40x15 experiment, except that it uses
1637      the exf (and cal) package instead of the
1638      external_fields_load routine (cf README file).
1639    
1640    checkpoint46m_post
1641    o modified testscript to return -- when there are no lines of "%MON" output
1642    o added new flag "quasiHydrostatic" for QH mode
1643      and new routine quasihydrostaticterms()
1644    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
1645      New routine: mom_u_coriolis_nh()
1646    o fixed sign of non-hydrostatic metric terms in u and v equations.
1647      Depend on correct sign of gravitySign.
1648    o added work.pc* to .cvsignore in aim directories using ifc
1649    o introduced flag for controllin non-hydrostatic metric terms
1650    o removed gravitySign from PARM04
1651    o switched to g77/ifc from pgf77 in aim experiments
1652    
1653    checkpoint46l_post
1654    o made convective adjustment work with pressure coordinates:
1655     - changed the direction of k-loop in convective_adjustment.F for the
1656       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
1657     - adjusted the reference pressure k-index in convective_adjustment.F
1658     - adjusted the convection condition in convect.F (in analogy to
1659       calc_ivdc.F)
1660     - convective_adjustment no longer computes anything on the halos
1661     - removed the warnings about negative salinity from find_rho.F and
1662       find_alpha.F; instead the new routine look_for_neg_salinity, called
1663       at the beginning of find_rho, find_alpha, and find_beta, does a
1664       check of the entire slice, if CPP-option
1665       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
1666    checkpoint46l_pre
1667    
1668    checkpoint46k_post
1669    o fixed the verification/global_ocean.90x40x15 experiment:
1670     - new bathymetry (the world according to A., JMC, and M.)
1671     - new initial fields and forcing fields (*.bin files)
1672     - new POLY3.COEFFS (for the next release one should switch to a full
1673       equation of state: JMD95P or MDJWF)
1674     - fixed several errors and redundancies in the data file
1675     - experiment uses looped cells
1676     - added matlab directory with diagnostic scripts for plotting of output
1677    
1678    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
1679     - read AIM physics parameters from a file (data.aimphys)
1680     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
1681    
1682    checkpoint46j_post
1683    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
1684    o move wVel computation at the end of the time step, in S/R integr_continuity
1685    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
1686    o update timeave pkg for wVel diagnostic.
1687    checkpoint46j_pre
1688    
1689    checkpoint46i_post
1690    o Clean up AIM package (and keep the results unchanged):
1691      include CPP_OPTION and use IMPLICT NONE in all routines ;
1692      declare all the variables _RL ; use _d 0 for all numerical constants.
1693      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
1694    
1695    checkpoint46h_post
1696    o cleaned up the use of rhoNil and rhoConst.
1697      - rhoNil should only appear in the LINEAR equation of state, everywhere
1698        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
1699        and the dynamical equations are all divided by rhoConst
1700    o introduced new parameter rhoConstFresh, a reference density of fresh
1701      water, to remove the fresh water flux's dependence on rhoNil. The default
1702      value is 999.8 kg/m^3
1703    o cleanup up external_forcing.F and external_forcing_surf.F
1704      - can now be used by both OCEANIC and OCEANICP
1705    checkpoint46h_pre
1706    
1707     Added code to convert surface volume flux (fresh water) into
1708     a mass flux when using P coordinates in the ocean (OCEANICP).
1709     Note: It assumes you have set rho0=rhoConst=density of fresh water.
1710    
1711    checkpoint46g_post
1712    o Include a new diagnostic variable phiHydLow for the ocean model
1713      - in z-coordinates, it is the bottom pressure anomaly
1714      - in p-coordinates, it is the sea surface elevation
1715      - in both cases, these variable have global drift, reflecting the mass
1716        drift in z-coordinates and the volume drift in p-coordinates
1717      - included time averaging for phiHydLow, be aware of the drift!
1718    o depth-dependent computation of Bo_surf for pressure coordinates
1719      in the ocean (buoyancyRelation='OCEANICP')
1720      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
1721        Theta, Salinity, and Pressure in the parameter list. This routine is
1722        presently contained in find_rho.F. This routine does not give the
1723        correct density for 'POLY3', which would be a z-dependent reference
1724        density.
1725    o cleaned up find_rho
1726      - removed obsolete 'eqn' from the parameter list.
1727    o added two new verification experiments: gop and goz
1728      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
1729    checkpoint46g_pre
1730    
1731    checkpoint46f_post
1732    o Enable tangent linear (forward mode) gradient checks:
1733      - extended active file handling to g_... files
1734      - added TANGENT_SIMULATION to theSimulationMode
1735      - extended grdchk package accordingly
1736    o added tangent linear setup in verification/carbon/code_ftl
1737    o added adjoint setup in verification/front_relax/code_ad
1738    
1739    checkpoint46e_post
1740    o Added new equation of state -> MDJWF
1741      - EOS of McDougall et al., 2002, JAOT, submitted
1742      - caveat: the equation of state is only valid for a smaller (more
1743        realistic?) range of values than JMD95P/Z and UNESCO
1744      - added masks to the calculation of pressure in store_pressure
1745      - added more check values for density in check_eos (ini_eos.F), some of
1746        the old check values are out of the range of the MDJWF-eos, so don't
1747        expect perfect matches for those
1748    checkpoint46e_pre
1749    
1750    checkpoint46d_post
1751    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
1752      'OCEANICP', also initialised field pressure correctly in ini_eos in the
1753      case of pressure coordinates. eosType='JMD95Z' in
1754      combination with buoyancyRelation='OCEANICP' now causes an error.
1755    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
1756      in find_alpha/beta.
1757    checkpoint46d_pre
1758    
1759    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
1760      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
1761    
1762    checkpoint46c_post
1763    o Changes necessary for ocean in p-coordinates
1764     -  Added new buoyancy relation = 'OCEANICP'
1765     -  Added new parameters = gravitySign (this used to be contained inside
1766        the factor dRdZ which I added when we first switched to R coordinates).
1767     X GM/Redi is not compatible (yet)
1768     X bottom drag and no-slip need to be debugged.
1769    checkpoint46c_pre
1770    
1771    checkpoint46b_post
1772    o Added new equation of state -> JMD95Z and JMD95P
1773      - EOS of Jackett and McDougall, 1995, JAOT
1774      - moved all EOS parameters into EOS.h
1775      - new routines ini_eos.F, store_pressure.F
1776    o Added UNESCO EOS, but not recommended because it requires
1777      in-situ temperature (see JMD95)
1778    o Modified formatting for knudsen2.f in utils/knudsen2 and added
1779      unesco.f to be used with POLY3
1780    checkpoint46b_pre
1781    
1782    checkpoint46a_post
1783    o Added (atmospheric) pressure loading
1784      - new field in FFIELDS.h, etc...
1785      - new cpp flag ATMOSPHERIC_LOADING
1786    o Changed hFacC to _hFacC in calc_phi_hyd.F
1787    o Added SHORTWAVE_HEATING to some files for consistency
1788    checkpoint46a_pre
1789    
1790    checkpoint46
1791    further merges from release1_p5
1792    o new ctrl package
1793      - adopted from ECCO environment to enable optimization
1794      - added Eliassen Palm fluxes to controls
1795    o added Eliassen Palm flux controls to gradient check package
1796    o cost package
1797      - Compatible with new ctrl package
1798      - added Eliassen Palm cost hooks
1799      - modif's of existing cost functions
1800    o Adjoint-related bug fixes in kpp:
1801      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
1802      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
1803    o autodiff package
1804      - flow directives:
1805        + new for S/R do_the_model_io
1806        + enhanced for S/R checkpoint
1807        + new gmredi.flow
1808      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
1809        disable adcommon.h/g_common.h by default.
1810      - fixed problem for adjoint of global_max
1811    o modified verification/carbon/
1812    o New setup for adjoint of global_ocean
1813    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
1814    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
1815    o incorporated hooks for sponge layer code (external_forcing.F)
1816    
1817    checkpoint45d_post
1818    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
1819    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
1820      (affects plume_on_slope "cg2d" output)
1821    o add new parameter deltaTfreesurf for free-surface time stepping
1822    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
1823    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
1824    o change phiMin in exp1 (to agree with documentation)
1825    o add new flags:
1826     - T,S forcing inside/outside Adams-Bashforth
1827     - turn off temp,salt advection and/or forcing
1828     - for each tracer, define internal flag for multiDimAdvection & A-B
1829    o monitor: change definition of KE to check conservation of Energy
1830    
1831    checkpoint45c_post
1832    o Removed f90 comments ("!")
1833    o Modified initialisations to enable exf package for MITgcm
1834      (without invoking ECCO_PACKAGE).
1835    o modifications to gradient check package (Martin Losch)
1836      - enable centered differences
1837      - modified format of standard output
1838    
1839    checkpoint45b_post
1840    o cleaned exchange calls in cg2d
1841    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
1842    o included CPP option SINGLE_LAYER_MODE in thermodynamics
1843      to configure barotropic setup (Martin Losch)
1844    o moved some initialisations within bi,bj loop in dynamics
1845      (TAF flow dependency)
1846    o in initialise_varia, moved call packages_init_variables
1847      before convective_adjustment_init
1848      (corresponding adjustment of TAF tape initialisation).
1849    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
1850    
1851    checkpoint45a_post
1852    o compute Rho over the whole domain (extend iMin,jMin indices)
1853    o specific exchange for X-slice domain (case Ny=1)
1854    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
1855    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
1856    
1857    checkpoint44h_post = checkpoint45
1858    o Fix to restore differentiability:
1859      place at which packages_init_variables is called in
1860      initialise_varia is crucial for reverse control flow.
1861    o modifications in GMRedi to enable stable adjoint
1862      (corresponding modif's in thermodynamics, dynamics)
1863    o added missing hook for sponge layer code in external_forcing
1864    o modified test cost functions
1865    o storing in gad_advection (plus removal of write(0,*)!
1866    o missing headers TR1.h added in convective_adjustment routines
1867    o errorMessageUnit set non-equal zero in eeboot
1868      (conflict on some platforms, e.g. IBM SP3)
1869    o modified carbon verif.
1870    
1871    checkpoint44h_pre
1872    o vertical grid option: allow to put the Interface at the middle between
1873      2 cell-centers ; replace delZ in pkg/kpp by drF.
1874    o GM Advective form: Tracers are advected using the residual transport (=
1875      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
1876    
1877    checkpoint44g_post
1878    o fix surface correction term in multiDimAdvection (affects plume_on_slope
1879      results) ; ifdef missing in thermodynamics.F
1880    
1881    checkpoint44f_pre,checkpoint44f_post
1882    o added PTRACERS package
1883      This allows an arbitrary number of passive tracers to be integrated
1884      forward simultaneously with the dynamicaly model.
1885      + Implemented so far:
1886        - basic forward algorithm (time-stepping, advection, diffusion, convection)
1887        - I/O and checkpointing
1888        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
1889      + Not implemented so far:
1890        - KPP
1891        - OBCS
1892      + No specific example supplied (yet) but global_ocean.90x40x15 has the
1893        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
1894        line in data.pkg.
1895      + This package is disabled by default since it increases storage.
1896    
1897    
1898    o testscript: added -cleanup option
1899    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
1900                 b) enable to filter 2D fields.
1901    
1902    checkpoint44e_pre,post
1903    o re-wrote convective adjustment to use pre-calculated weights
1904      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
1905      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
1906      Original calls to convect() still in place.
1907    
1908    chkpt44d_pre,post
1909    o added missing EXCLUDE_MONITOR flags
1910    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
1911      (incompatible typ in MIN/MAX expressions caused problems
1912      on IBM SP3)
1913    o in genmake added variable MAKEDEPEND
1914      plus resetting for case SunOS
1915    o added timer_stats.c routine for IBM SP3
1916    o removed variables in dynamics
1917    !!! I forgot to create tag chkpt44d_pre !!!
1918    !!! But chkpt44d_pre = chkpt44c_post    !!!
1919    
1920  o real fresh water flux implemented with non-linear free-surface.  o real fresh water flux implemented with non-linear free-surface.
1921    
1922  chkpt44c_pre,post  chkpt44c_pre,post

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