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revision 1.158 by heimbach, Fri May 23 18:24:17 2003 UTC revision 1.315 by dimitri, Mon Jun 28 21:10:55 2004 UTC
# Line 3  $Header$ Line 3  $Header$
3      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
4      ==============================      ==============================
5    
6    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
7    o new parameter "nShapS": allow to treat differently S from T (nShapT)
8    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
9    
10    checkpoint53f_post
11    o modifications that affect AIM experiment results (update output.txt):
12      - no advection of S at top interface Nr (pkg/generic_advdiff)
13      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
14    o AIM pkg:
15      - include stability function into surf.Flux derivative relative to Tsurf
16      - calculate clear-sky radiation & surface temp. change (for diagnostics)
17    
18    checkpoint53e_post
19    o merged cylindrical coord configuration
20    o added rotating_tank experiment
21    checkpoint53e_pre
22    
23    checkpoint53d_post
24    o faulks upgraded: re-generate output.txt that have changed:
25       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
26    o Added Bryan and Lewis, 1979, vertical diffusivity profile
27    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
28    o added Sadourny discretization of Coriolis
29      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
30      - re-enabled use of omega3 (useAbsVorticity)
31    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
32      vector-invariant equations
33      - note: does *NOT* yet use same variable visc. for no-slip BC's.
34    o recoded the lateral boundary conditions for non-hydrostatic w, this time
35      hopefully without new bugs
36      - still to do: biharmonic friction for non-hydrostatic w
37    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
38    o regenerated output for global_ocean_ebm (using -ieee)
39    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
40      of mom_common/
41      - simple re-arrangement of instructions within computing loop
42    checkpoint53d_pre
43    
44    checkpoint53c_post
45    o new version of coupler for AIM+thSIce and Ocean models
46     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
47     - land: change Evaporation of snow
48     - aim with thSIce: fix bug in snow-precip.
49    o changes to calc_gw.F
50     - bug fix for w^2 term near the bottom boundary
51     - (hopefully) improve the lateral slip boundary condtions for use with
52        partial/looped cells
53      - because the bug fix changes two verification experiments anyway (exp5
54        and plume on slope), change the lateral boundary condition from half slip
55        to the value of no_slip_sides
56    o ebm package wasnt quite up to the parallel task. Fixed that.
57    o Adjoint of EBM package + verification
58      * TLM OK
59      * ADM not sufficient accuracy yet (needs further testing)
60    
61    checkpoint53b_post
62    o Commiting new energy balance model to repository
63      * package is pkg/ebm
64      * verif. is verification/global_ocean_ebm
65      * references are in ebm_driver.F
66    C      * X. Wang, P. Stone and J. Marotzke, 1999:
67    C        Global thermohaline circulation. Part I:
68    C        Sensitivity to atmospheric moisture transport.
69    C        J. Climate 12(1), 71-82
70    C      * X. Wang, P. Stone and J. Marotzke, 1999:
71    C        Global thermohaline circulation. Part II:
72    C        Sensitivity with interactive transport.
73    C        J. Climate 12(1), 83-91
74    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
75    C        Destabilization of the thermohaline circulation
76    C        by atmospheric eddy transports.
77    C        J. Climate 7(12), 1870-1882
78    o Will need long integration testing.
79    checkpoint53b_pre
80    
81    o created pkg/mom_common in preparation for variable viscosity code
82    o renamed and split ini_mnc_io
83    o pkg/land: only liquid water can diffuse or run-off
84    o AIM using land: soil wetness availability account for snow
85    o added printMapIncludesZeros to EEPARMS namelist
86    
87    checkpoint53a_post
88    o restore TAMC compatiility for exf_constants.h
89      (no usage of _d in .h)
90    o Additional storing in KPP in an attempt to fix
91      TAMC problem with adjoint of KPP code.
92      (no success...)
93      Identical code works fine with TAF.
94    o Fixed verification/natl_box_adjoint experiments.
95      Initial conditions for Experiments 4 and 5 are now
96      set to "SEAICE_initialHEFF=0", which is more reasonable,
97      and hence gives results closer to that of Experiment 2.
98      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
99    
100    checkpoint53
101    o stable checkpoint with up to date adjoint
102      TLM tests only run for 1st grdchk at the moment. Its unclear if
103      this is a code problem or a problem with resetting code for g_
104      variables that is being autogenerated wrong.
105      Otherwise:
106       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
107       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
108         are both still in chaos following their security messes.
109    
110    checkpoint52n_post
111    o various build (mostly genmake2) changes including:
112      - ability to build/run more easily within Cygwin and MacOS X
113      - more complicated Makefiles with a stronger dependence on Gnu Make
114    o pkg/seaice modifications
115      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
116        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
117        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
118      - changed proxy for geostrophic velocity and updated
119        verification/lab_sea/results/* accordingly
120      - removed ADI dynamic solver from pkg/seaice
121      - replaced all occurrences of 1/CSTICE or 1/CSUICE
122        they caused a segmentation fault under certain circumstances
123      - removed unused field WATR
124    o bug fix in exf-package:
125      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
126         now reflect that.
127    o small fixes in the cal-package:
128      - set reference date to first of January for the 'model'-calendar
129      - failing of cal_CheckDate in cal_FullDate now actually results in a
130        warning
131    o small modifications in exf-package to increase flexibility:
132      - change climtempfreeze from a constant to a runtime parameter that
133        is specified in data.exf_clim (default = -1.9)
134      - introduce runtime parameter windstressmax (default = 2.0) that is
135        specified in data.exf
136    o fix in pkg/thsice:
137      - update Evap (Tsf changes) to be consistent with Latent heat flux
138      - maintain snow precipitation unchanged (even if Tsf >=0).
139     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
140    
141    checkpoint52m_post
142    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
143      this does not change any of the results, because myIter=0 in swfrac always
144      lead to jwtype=2 (the default anyway), but the call makes little sense
145      as a default
146    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
147    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
148      atmospheric model (AIM) to use it ; add a "slab ocean" component.
149    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
150    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
151    o extending useSingleCpuIO option to work with new exch2 I/O format
152      - old-style, missing-tile I/O is still accessible by defining CPP
153        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
154    o monitor package can write to NetCDF files and/or STDOUT
155    o fix re-definition bug in MNC_GRID_INIT_ALL()
156    o doc/api_reference added
157      - a framework for building an API Reference Manual using all
158        the "protex" comments embedded in the code
159      - see pkg/generic_advdiff, pkg/mnc for examples
160    o MNC:
161      - make myThid the last argument for all subroutines
162      - new default for the grid files: NO halos
163      - add useMNC and other run-time flags
164      - separate per-file-group handling of the unlimited dimension
165      - early initialization of MNC w/ flags read at the eeboot stage
166        and lookup tables set in initialize_fixed
167      - write all MNC output to a freshly-created directory
168    o thermodynamics sea-ice (thsice) is now tested with testreport.
169    o test exp. advect_cs: use the standard cs32 grid ; update output.
170    o Added functionality to grdchk:
171      pick global i,j,k position (or nearest wet) where to perform check.
172    
173    checkpoint52l_post
174    o new land formulation:
175      a) use ground enthalpy as prognostic variable to ensure exact
176         energy conservation.
177      b) account for water temperature and for latent heat of freezing
178         in all processes (rain, run-off, ground storage)
179      c) compute surface and ground temperature implicitly.
180    o aim_v23 modification for new land model:
181      a) Treat separately land / ocean / sea-ice surface fluxes
182         to allow implicit computation of land & sea-ice surface temp.
183      b) add snow precipitation.
184    checkpoint52l_pre
185    
186    o fix problem (when 1 tile is empty) in min/max monitor.
187    o fix bug in timeAve (u,vZetatave in common block)
188    o no restoring terms under ice for pkg/seaice
189    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
190    o bug fix for pkg/seaice pickups
191    o change MNC call locations and add coordinate attributes
192    o mask vorticity at the corner ; affects global_ocean.cs output
193    o fix ini_curvilinear_grid ; test CS experiments with mpi
194    o aim.5l_cs: modify sea-ice fraction input file ; update output
195    o exf: Adding simple range check routine for exf fields after read
196    
197    checkpoint52k_post
198    o removed top-level directory "diags"
199      - we migrated these functions to pkg/timeave a long time ago
200    o fixed bug introduced in pkg/monitor
201    o accuracy ctrlprec = 32 insuffient for gradient checks using
202      averaged fields (I/O via cost_averages)
203      -> use ctrl.h in active_file*.F to control I/O precision.
204    o paramter list of CALL ADTHE_MAIN_LOOP
205    o added initial do_the_model_io to ecco
206    o set all ...Freq to zero after cost_final
207      taveFreq, dumpFreq, pChkptFreq
208    o MAIN and ECCO differentiability restored
209    
210    checkpoint52j_post
211    o fix nchklev in tamc.h for global_ocean...
212    o Bringing flow and store directives up-to-date
213    o Really weird thing!
214      call do_the_model_io from the_main_loop with parameters
215      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
216      TAF places a faulty re-call of initialise_varia
217      after cost_final call which should not be there!
218    checkpoint52j_pre
219    
220    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
221      error messages
222    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
223    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
224      debug output
225    o modfied mdsio_writefield.F to handle non-global files under exch2
226    o update AIM Cubed-Sphere exp (aim.5l_cs):
227      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
228    o update AIM Equatorial Channel exp:
229      use standard aim_v23 pkg and change the SST fields to be more realistic.
230    o globalFile now works with exch2
231    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
232      mon_vort3.F to make exch2 friendly with >1 tile per cube face
233    o limit timeave output for hi-res integrations
234    
235    checkpoint52i_post
236    o removed CPP_EEOPTIONS.h from verification/*/code
237    o updated the tiling for global_ocean_pressure
238    checkpoint52i_pre
239    
240    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
241      the old pkg/aim).
242    
243    checkpoint52h_pre
244    o shortened offending lines in exch2_send_rx?.template
245    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
246    o genmake2: add build & execute test for NetCDF code
247    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
248      old grid files, moved CPP_EEMACROS.h to pkg/exch2
249    o added useSingleCPUIO flag to monitor.F and mon_out.F
250    o added temporary hack for sea-ice dynamics on the cube:
251      metric terms are ignored and it is assumed that
252      there is no sea-ice on cube faces 1, 2, 4, and 5.
253    
254    checkpoint52f_post
255    o added exch2 cube routines to pkg/exch2
256    o modified hs94.cs-32x32x5 to use it
257    o added new grid files to hs94.cs-32x32x5
258    checkpoint52f_pre
259    
260    checkpoint52e_post
261    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
262      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
263    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
264      to work with implicit vertical advection and AB ;
265    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
266    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
267     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
268    checkpoint52e_pre
269    
270    o fix bug in impldiff when Nr=1 or Nr=2.
271    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
272    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
273    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
274      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
275    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
276    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
277    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
278    
279    checkpoint52d_post
280    o re-tiled many expts to allow comparison in multi-processor mode
281      - updated output accordingly
282      - changed hs94.128x64x5 to use intial T from file rather than use the
283        random number generator
284    o add infrastructure in model routines for fizhi and gridalt packages
285    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
286    o changes to permit hi-res, cubed-sphere, configuration
287      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
288      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
289      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
290        of surface winds for the cube
291      (A verification experiment, based on global_ocean.cs32x15, but with
292       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
293       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
294       complete with example surface forcing files and matlab scripts to look
295       at the output and compare it with that of global_ocean.cs32x15.)
296    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
297       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
298       to conform to the common rule.
299    o check-in the first version of the coupler + interfaces for multi-components
300       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
301       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
302       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
303       - ocean and atmos. share the same horizontal grid (no interpolation).
304       - exchanges between component and coupler is done in forward_step
305    o new verification experiment, cpl_aim+ocn:
306       coupled ocean - AIM atmosphere on cs32 grid.
307    
308    checkpoint52d_pre
309    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
310    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
311    
312    checkpoint52c_post
313    o Fixing OPTIONS files for use of exf:
314      - ALLOW_ECCO not needed
315      - ECCO_CPPOPTIONS.h should not be included from
316        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
317        as has been the case in the past
318      - All cal/exf related options are currently set in
319        single header file. Should remain so until we
320        agree on a consistent new policy.
321    o Removed all CPP options for cal package.
322      cal has no more CPP options.
323    o modified STOREs in GAD_ADVECTION
324    o corrected key comp. for passkey
325    
326    checkpoint52b_post
327    o new version: "thsice" of thermodynamic sea-ice pkg:
328     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
329     - modify fluxes but do not change theta directly;
330     - light cleaning of bulk_force pkg (still needed with thsice).
331     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
332       + output_thsice.txt to test thsice & bulk_force pkgs.
333    o put back grid & coriolis monitor output.
334    checkpoint52b_pre
335    
336    o call "do_the_model_io" at the beginning (=> dump initial state)
337    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
338    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
339      (need info on NUMBER_OF_PTRACERS)
340    o missing PTRACERS headers in some routines
341    o default tamc.h in pkg/autodiff supposed to crash
342      to ensure proper customization
343    
344    checkpoint52a_post
345    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
346      - moved surfaceTendencyTice from pkg/seaice to main code
347      - subroutine FREEZE_SURFACE now limits only surface temperature
348        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
349        => new output.txt for global_ocean.cs32x15 & global_with_exf
350      - keep the old version of FREEZE for backward compatibility;
351        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
352      - corresponding modifs for TAF directives
353    o added surface flux output variables to TIMEAVE_STATVARS
354    o time-averaged output for pkg/ptracers
355    o fix problem with ECCO-related divided adjoint
356      snapshot file was missing some ad-variables,
357      but no warning issued by TAF
358    
359    checkpoint52a_pre
360    o some bug fixes for #undef REAL4_IS_SLOW
361    
362    checkpoint52 = ecco_c52_e35
363    o after testing adjoints of checkpoint51u_post
364    
365    checkpoint51u_post
366    o this is the post-merge tag of the ecco-branch
367      (needs another clean checkout and re-testing)
368    o various natl_box_adjoint configs and results
369      but no input fields
370    o obcs adjoint not yet merged!
371    o adding ECCO global 1x1 and 2x2 degree configs
372    o updated/extended some store directives for seaice
373    o pkg/ecco now containes ecco-specific part of cost function
374    o top level routines the_main_loop, forward_step
375      supersede those in model/src/
376      previous input data.cost now in data.ecco
377      (new namelist ecco_cost_nml)
378    o in ctrl/ cleaned some cross-dependencies and updated CPP options
379    
380    checkpoint51t_post
381    o this is the pre-merge tag of the ecco-branch
382    
383    checkpoint51s_post
384    o cleanup: removed various obsolete #define-s
385    o pkg/grdchk
386      - renamed 'ph-grd 3' to 'grad-res'
387      - merged from ecco-branch
388        (remaining bug fixes for obcs gradient checks)
389      - additional high-precision output for testreport
390        (grep for 'precision_grdchk_result')
391    
392    checkpoint51r_post
393    o cleaned up or removed CPP_OPTIONS.h files
394    o updated results for some of the tests to reflect the new
395      optfiles (-ieee: -O0 instead of -O3)
396    
397    checkpoint51q_post
398    o cd_code:
399      - moved cd_scheme.F -> cd_code_scheme.F
400      - separate read_checkpoint from cd_code_ini_vars.F
401      - separated cd_code part from write_checkpoint
402      - updated AD_SOURCE, generated .flow
403      - added CD_CODE_VARS.h to the_main_loop
404      - Moving cd_code specific store dir.s to pkg/cd_code
405    o ctrl package totally restructured
406      - pack/unpack now optional and decoupled from
407        xx_/adxx_ I/O
408      - ctrl_pack/unpack cleaned
409        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
410      - confined inclusion of AD_CONFIG.h to where necessary.
411    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
412    
413    checkpoint51p_post
414    o create initial cd_code package
415      - WARNING: the initialization of fields within packages
416        is broken because INI_FIELDS (where READ_CHECKPOINT is
417        called) is called *before* PACKAGES_INIT_VARIABLES.
418        This seems to be backwards since
419        1) its important to initially zero the entire field including
420           the "halo" region
421        2) zeroing needs to be done *before* reading pickup info
422           and the pickup call might or might not happen in any
423           particular run
424      - this needs an overhaul for R2
425    o cleanup verification/*/code/GMREDI_OPTIONS.h
426    o cleanup testreport
427    
428    checkpoint51o_post
429    o bringing AD-related verif's up to date with genmake2
430      - carbon/
431      - global_ocean.90x40x15/
432      - hs.94.1x64x5/
433      - (front_relax/ )
434    o (more) consistent directory structure for AD-related verif.'s
435    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
436    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
437    o bug fix in find_alpha.F for MDJWF:
438      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
439        change rho -> rho-rhoConst
440      - replace call find_rho to find_rhonum
441    o initialisation of rFlx extended to full array (required by TAF)
442      and shifted to thermodynamics
443    o removed PTRACERS.h in ptracers routine
444    o added surfacetendencyPtr to S/R parameter list pracers_forcing
445    o Correcting initialisations for fVerU, fVerV.
446    o helping TAF to recognize dependency on kUp for
447      fVerU, fVerV
448    o Replacing delZ by delR in pkg/ctrl/
449    checkpoint51o_pre
450    
451    o undid all of cp51 pending some cleanups and discussion
452    o added the [#include "AD_CONFIG.h"] statement to all files that need
453       it for adjoint/tl #defines
454     o re-worked the build logic in genmake2 to support AD_CONFIG.h
455     o removed tools/genmake since it no longer works
456    
457    checkpoint51n_post
458    o modifications to make FREEZE flux visible to pkg/kpp
459      - moved surfaceTendencyTice from pkg/seaice to main code
460      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
461      - subroutine FREEZE now limits only surface temperature
462        (this means new output.txt for global_ocean.90x40x15,
463         global_ocean.cs32x15, and global_with_exf)
464    o added surface flux output variables to TIMEAVE_STATVARS
465    
466    checkpoint51n_pre
467    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
468    o added [#include "AD_CONFIG.h"] to all files that use the following
469      defines:
470      - ALLOW_ADJOINT_RUN
471      - ALLOW_TANGENTLINEAR_RUN
472      - ALLOW_ECCO_OPTIMIZATION
473    
474    checkpoint51m_post
475    o incorporating changes to get TAMC/TAF working in genmake2
476      - added new TAMC/TAF targets to the Makefile
477      - various cleanups related to package handling
478      - these changes should have no impact on the forward model
479    
480    checkpoint51l_post
481    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
482     - faster algorithm for cal_addtime.F
483     - higher precision arithmetic, where needed
484     - pkg/exf *startdate variables changed from calendar date to
485       model integration time
486    
487    checkpoint51l_pre
488    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
489    o enable to apply restoring on S & T only in a latitude band.
490    o update output (external_forcing_surf modif. change truncation errors)
491       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
492    
493    checkpoint51k_post
494    o change default to: useNHMTerms=.FALSE.
495     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
496       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
497     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
498        exp1, ideal_2D_oce
499     - change data file of oceanic exp (leave the results unchanged for now)
500       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
501    o set gravitySign automatically according to the vertical coordinate used
502      (and change sign: back to "logical" value: +1 when R increases downward)
503    o added an include barrier to the default CPP_OPTIONS.h and
504      removed the #include "PACKAGES_CONFIG.h" from it
505    o fix a bug in mom_fluxform (from chk51j_post)
506    
507    checkpoint51j_post
508    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
509    o adjusted some flow directives (dynamics, thermodynamics)
510    o added cubed-sphere case to test cost function
511    o heckpoint_lev?_directives.h now include
512      pkg-specific directives, whenever those are enabled.
513    o Moving pkg-specific flow directives to corresponding pkg
514      Moving pkg-specific differentiation list to corresponding pkg
515      Moving pkg-specific checkpoint-lev storing to corresponding pkg
516      ---> conventions are
517           - pkg_ad.flow
518           - pkg_ad_diff.list
519           - pkg_ad_check_lev?_dir.h
520    
521    checkpoint51i_post
522    o merge of the branch-genmake2
523      - knowingly breaks the older genmake
524      - automatic generation of all ALLOW_${PKG_NAME} defines
525      - new testreport supersedes older testscript
526    o large number of package inclusion and header cleanups
527    checkpoint51i_pre
528    
529    o new output for adjoin of global ocean vector invariant
530    o fix for checkpoint of thermodynamic seaice and bulk_force
531    o Steph gchem various cleanups
532    
533    checkpoint 51h_pre
534    o fixed some single quotes
535    o modify gchem pkg to be more versatile
536    o modifications to clean up dic pkg
537    o add pkg/cfc
538    
539    checkpoint51g_post
540    o provide links for ARPACK and ADM*TLM
541    o start removing verification/vero/
542    o update AD-related stuff
543      (in particular some IF-statements in model/src/ routines)
544    o adding to verification/global_ocean.90x40x15/ adjoint of
545      vector invariant setup
546    
547    checkpoint51f_post
548    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
549    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
550      of tracer Green's fucntions for ocean inversion project.
551    
552    checkpoint51f_pre
553    o Added on-the-fly spatial interpolation capability
554        "USE_EXF_INTERPOLATION" to pkg/exf.
555      - This is a temporary Cartesian-grid hack until
556        the super-duper ESMF coupler becomes available.
557      - See verification/global_with_exf/README for usage example.
558      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
559        flags and modified pkg/seaice accordingly.
560    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
561        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
562        non-local transport term.
563    
564    checkpoint51e_post
565    o pkg/mom_vecinv:
566      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
567      - add time-ave diagnostic of vorticity advection.
568    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
569    o atmospheric geopotential: - include water vapor effect;
570                                - use p^kappa in p* scaling.
571    o land pkg: read initial state from files.
572    o AIM : add stratospheric drag in the upper level
573    
574    checkpoint51d_post
575    o change function ILNBLNK (=> last non-blank char.) to return zero
576      (instead of the string length) when the string. char is empty
577    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
578    o modif's to restore TAMC compatibility
579      - avoid "_d" constructs in PARAMETER declarations
580      - avoid interrupting lines by comment lines
581    o Use cluster local disks for purely local I/O
582      vs. globally visible disks needed for ctrl stuff
583      (merged from ecco-branch)
584      - new active_file_loc... and mdsio_..._loc routines
585      - affected packages: autodiff, ctrl, grdchk, mdsio
586    
587    checkpoint51c_post
588    o introducing integer flag debugLevel
589      - debLevZero: suppress all output
590      - debLevA: standard
591      - debLevB: equivalent to current debugMode=.TRUE.
592    o introducing pathname variable mdsioLocalDir for mdsio
593      that can be specified at runtime
594      (relevant for cluster I/O to local disk)
595    `
596    >>>checkpoint51b_post
597    adjoint of ptracers
598    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
599    o extended state in checkpoint_lev?, etc.
600    o alternative ctrl/cost with tr1 or ptracer
601    o new comlev1_bibj_ptracers
602    o new ptracers.flow
603    o made ptracers_forcing same as external_forcing_s
604    o added verification for adjoint with ptracers
605      - adm. grdchk fail so far
606      - tlm. grdchk OK
607      - checked tapelev/comlev recomputations: OK
608    <<<checkpoint51b_pre
609    
610    checkpoint51a_post
611    o added code for biogeochemistry package
612      - new pkgs: dic, gchem
613      - new subroutine in ptracers
614    o modify code for biogeo packages
615      - in model/src and pkg/ptracers
616    
617    checkpoint51
618    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
619      - autodiff, ctrl, exf, grdchk, seaice
620      kept separate packages
621      - cost, ecco, obcs
622    o updating verification/internal_wave, verification/lab_sea
623      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
624    
625    checkpoint50i_post
626    o Preparing next differentiable checkpoint and sync
627      of MAIN vs. ecco-branch
628      - 1st step: this one is differentiable
629      - 2nd step: next(! not this) checkpoint will have updated packages
630                  from ecco-branch)
631    
632    checkpoint50h_post
633    o new package "land": provide surface BC for AIM.
634    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
635    o AIM: use true log-P extrapolation for near surface temp (= as in
636        F.Molteni paper) ; update aim.5l_cs output.
637    o New variable in PARM03 for more flexible pickups
638    o somewhat cleaned package initialisation sequence for
639      ctrl/ cost/ ecco/ in packages_... routines
640    
641    checkpoint50g_post
642    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
643      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
644      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
645        made the default because of faster convergence than ADI
646    
647    checkpoint50f_post
648    o exf totally restructured
649      - replaced all exf_set_ routines by one generic exf_set_gen.F
650        and made sure it's still differentiable
651      - split exf_getffields.F into new exf_bulkformulae.F
652      - exf_inscal_/exf_outscal_ suffixes consistent with field names
653      - updated adjoint/makefile and relevant verif. accordingly
654    
655  checkpoint50f_pre  checkpoint50f_pre
656   o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;   o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
657        + change Evap over land. (update aim.5l_cs output)        + change Evap over land. (update aim.5l_cs output)

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