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revision 1.76 by jmc, Fri Jul 12 14:52:08 2002 UTC revision 1.281 by mlosch, Mon Apr 19 23:25:15 2004 UTC
# Line 2  $Header$ Line 2  $Header$
2    
3      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
4      ==============================      ==============================
5    
6    o small fixes in the cal-package:
7      - set reference date to first of January for the 'model'-calendar
8      - failing of cal_CheckDate in cal_FullDate now actually results in a
9        warning
10    o small modifications in exf-package to increase flexibility:
11      - change climtempfreeze from a constant to a runtime parameter that
12        is specified in data.exf_clim (default = -1.9)
13      - introduce runtime parameter windstressmax (default = 2.0) that is
14        specified in data.exf
15    o fix in pkg/thsice:
16      - update Evap (Tsf changes) to be consistent with Latent heat flux
17      - maintain snow precipitation unchanged (even if Tsf >=0).
18     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
19    
20    checkpoint52m_post
21    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
22      this does not change any of the results, because myIter=0 in swfrac always
23      lead to jwtype=2 (the default anyway), but the call makes little sense
24      as a default
25    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
26    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
27      atmospheric model (AIM) to use it ; add a "slab ocean" component.
28    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
29    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
30    o extending useSingleCpuIO option to work with new exch2 I/O format
31      - old-style, missing-tile I/O is still accessible by defining CPP
32        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
33    o monitor package can write to NetCDF files and/or STDOUT
34    o fix re-definition bug in MNC_GRID_INIT_ALL()
35    o doc/api_reference added
36      - a framework for building an API Reference Manual using all
37        the "protex" comments embedded in the code
38      - see pkg/generic_advdiff, pkg/mnc for examples
39    o MNC:
40      - make myThid the last argument for all subroutines
41      - new default for the grid files: NO halos
42      - add useMNC and other run-time flags
43      - separate per-file-group handling of the unlimited dimension
44      - early initialization of MNC w/ flags read at the eeboot stage
45        and lookup tables set in initialize_fixed
46      - write all MNC output to a freshly-created directory
47    o thermodynamics sea-ice (thsice) is now tested with testreport.
48    o test exp. advect_cs: use the standard cs32 grid ; update output.
49    o Added functionality to grdchk:
50      pick global i,j,k position (or nearest wet) where to perform check.
51    
52    checkpoint52l_post
53    o new land formulation:
54      a) use ground enthalpy as prognostic variable to ensure exact
55         energy conservation.
56      b) account for water temperature and for latent heat of freezing
57         in all processes (rain, run-off, ground storage)
58      c) compute surface and ground temperature implicitly.
59    o aim_v23 modification for new land model:
60      a) Treat separately land / ocean / sea-ice surface fluxes
61         to allow implicit computation of land & sea-ice surface temp.
62      b) add snow precipitation.
63    checkpoint52l_pre
64    
65    o fix problem (when 1 tile is empty) in min/max monitor.
66    o fix bug in timeAve (u,vZetatave in common block)
67    o no restoring terms under ice for pkg/seaice
68    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
69    o bug fix for pkg/seaice pickups
70    o change MNC call locations and add coordinate attributes
71    o mask vorticity at the corner ; affects global_ocean.cs output
72    o fix ini_curvilinear_grid ; test CS experiments with mpi
73    o aim.5l_cs: modify sea-ice fraction input file ; update output
74    o exf: Adding simple range check routine for exf fields after read
75    
76    checkpoint52k_post
77    o removed top-level directory "diags"
78      - we migrated these functions to pkg/timeave a long time ago
79    o fixed bug introduced in pkg/monitor
80    o accuracy ctrlprec = 32 insuffient for gradient checks using
81      averaged fields (I/O via cost_averages)
82      -> use ctrl.h in active_file*.F to control I/O precision.
83    o paramter list of CALL ADTHE_MAIN_LOOP
84    o added initial do_the_model_io to ecco
85    o set all ...Freq to zero after cost_final
86      taveFreq, dumpFreq, pChkptFreq
87    o MAIN and ECCO differentiability restored
88    
89    checkpoint52j_post
90    o fix nchklev in tamc.h for global_ocean...
91    o Bringing flow and store directives up-to-date
92    o Really weird thing!
93      call do_the_model_io from the_main_loop with parameters
94      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
95      TAF places a faulty re-call of initialise_varia
96      after cost_final call which should not be there!
97    checkpoint52j_pre
98    
99    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
100      error messages
101    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
102    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
103      debug output
104    o modfied mdsio_writefield.F to handle non-global files under exch2
105    o update AIM Cubed-Sphere exp (aim.5l_cs):
106      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
107    o update AIM Equatorial Channel exp:
108      use standard aim_v23 pkg and change the SST fields to be more realistic.
109    o globalFile now works with exch2
110    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
111      mon_vort3.F to make exch2 friendly with >1 tile per cube face
112    o limit timeave output for hi-res integrations
113    
114    checkpoint52i_post
115    o removed CPP_EEOPTIONS.h from verification/*/code
116    o updated the tiling for global_ocean_pressure
117    checkpoint52i_pre
118    
119    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
120      the old pkg/aim).
121    
122    checkpoint52h_pre
123    o shortened offending lines in exch2_send_rx?.template
124    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
125    o genmake2: add build & execute test for NetCDF code
126    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
127      old grid files, moved CPP_EEMACROS.h to pkg/exch2
128    o added useSingleCPUIO flag to monitor.F and mon_out.F
129    o added temporary hack for sea-ice dynamics on the cube:
130      metric terms are ignored and it is assumed that
131      there is no sea-ice on cube faces 1, 2, 4, and 5.
132    
133    checkpoint52f_post
134    o added exch2 cube routines to pkg/exch2
135    o modified hs94.cs-32x32x5 to use it
136    o added new grid files to hs94.cs-32x32x5
137    checkpoint52f_pre
138    
139    checkpoint52e_post
140    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
141      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
142    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
143      to work with implicit vertical advection and AB ;
144    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
145    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
146     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
147    checkpoint52e_pre
148    
149    o fix bug in impldiff when Nr=1 or Nr=2.
150    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
151    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
152    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
153      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
154    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
155    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
156    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
157    
158    checkpoint52d_post
159    o re-tiled many expts to allow comparison in multi-processor mode
160      - updated output accordingly
161      - changed hs94.128x64x5 to use intial T from file rather than use the
162        random number generator
163    o add infrastructure in model routines for fizhi and gridalt packages
164    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
165    o changes to permit hi-res, cubed-sphere, configuration
166      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
167      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
168      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
169        of surface winds for the cube
170      (A verification experiment, based on global_ocean.cs32x15, but with
171       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
172       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
173       complete with example surface forcing files and matlab scripts to look
174       at the output and compare it with that of global_ocean.cs32x15.)
175    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
176       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
177       to conform to the common rule.
178    o check-in the first version of the coupler + interfaces for multi-components
179       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
180       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
181       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
182       - ocean and atmos. share the same horizontal grid (no interpolation).
183       - exchanges between component and coupler is done in forward_step
184    o new verification experiment, cpl_aim+ocn:
185       coupled ocean - AIM atmosphere on cs32 grid.
186    
187    checkpoint52d_pre
188    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
189    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
190    
191    checkpoint52c_post
192    o Fixing OPTIONS files for use of exf:
193      - ALLOW_ECCO not needed
194      - ECCO_CPPOPTIONS.h should not be included from
195        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
196        as has been the case in the past
197      - All cal/exf related options are currently set in
198        single header file. Should remain so until we
199        agree on a consistent new policy.
200    o Removed all CPP options for cal package.
201      cal has no more CPP options.
202    o modified STOREs in GAD_ADVECTION
203    o corrected key comp. for passkey
204    
205    checkpoint52b_post
206    o new version: "thsice" of thermodynamic sea-ice pkg:
207     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
208     - modify fluxes but do not change theta directly;
209     - light cleaning of bulk_force pkg (still needed with thsice).
210     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
211       + output_thsice.txt to test thsice & bulk_force pkgs.
212    o put back grid & coriolis monitor output.
213    checkpoint52b_pre
214    
215    o call "do_the_model_io" at the beginning (=> dump initial state)
216    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
217    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
218      (need info on NUMBER_OF_PTRACERS)
219    o missing PTRACERS headers in some routines
220    o default tamc.h in pkg/autodiff supposed to crash
221      to ensure proper customization
222    
223    checkpoint52a_post
224    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
225      - moved surfaceTendencyTice from pkg/seaice to main code
226      - subroutine FREEZE_SURFACE now limits only surface temperature
227        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
228        => new output.txt for global_ocean.cs32x15 & global_with_exf
229      - keep the old version of FREEZE for backward compatibility;
230        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
231      - corresponding modifs for TAF directives
232    o added surface flux output variables to TIMEAVE_STATVARS
233    o time-averaged output for pkg/ptracers
234    o fix problem with ECCO-related divided adjoint
235      snapshot file was missing some ad-variables,
236      but no warning issued by TAF
237    
238    checkpoint52a_pre
239    o some bug fixes for #undef REAL4_IS_SLOW
240    
241    checkpoint52 = ecco_c52_e35
242    o after testing adjoints of checkpoint51u_post
243    
244    checkpoint51u_post
245    o this is the post-merge tag of the ecco-branch
246      (needs another clean checkout and re-testing)
247    o various natl_box_adjoint configs and results
248      but no input fields
249    o obcs adjoint not yet merged!
250    o adding ECCO global 1x1 and 2x2 degree configs
251    o updated/extended some store directives for seaice
252    o pkg/ecco now containes ecco-specific part of cost function
253    o top level routines the_main_loop, forward_step
254      supersede those in model/src/
255      previous input data.cost now in data.ecco
256      (new namelist ecco_cost_nml)
257    o in ctrl/ cleaned some cross-dependencies and updated CPP options
258    
259    checkpoint51t_post
260    o this is the pre-merge tag of the ecco-branch
261    
262    checkpoint51s_post
263    o cleanup: removed various obsolete #define-s
264    o pkg/grdchk
265      - renamed 'ph-grd 3' to 'grad-res'
266      - merged from ecco-branch
267        (remaining bug fixes for obcs gradient checks)
268      - additional high-precision output for testreport
269        (grep for 'precision_grdchk_result')
270    
271    checkpoint51r_post
272    o cleaned up or removed CPP_OPTIONS.h files
273    o updated results for some of the tests to reflect the new
274      optfiles (-ieee: -O0 instead of -O3)
275    
276    checkpoint51q_post
277    o cd_code:
278      - moved cd_scheme.F -> cd_code_scheme.F
279      - separate read_checkpoint from cd_code_ini_vars.F
280      - separated cd_code part from write_checkpoint
281      - updated AD_SOURCE, generated .flow
282      - added CD_CODE_VARS.h to the_main_loop
283      - Moving cd_code specific store dir.s to pkg/cd_code
284    o ctrl package totally restructured
285      - pack/unpack now optional and decoupled from
286        xx_/adxx_ I/O
287      - ctrl_pack/unpack cleaned
288        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
289      - confined inclusion of AD_CONFIG.h to where necessary.
290    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
291    
292    checkpoint51p_post
293    o create initial cd_code package
294      - WARNING: the initialization of fields within packages
295        is broken because INI_FIELDS (where READ_CHECKPOINT is
296        called) is called *before* PACKAGES_INIT_VARIABLES.
297        This seems to be backwards since
298        1) its important to initially zero the entire field including
299           the "halo" region
300        2) zeroing needs to be done *before* reading pickup info
301           and the pickup call might or might not happen in any
302           particular run
303      - this needs an overhaul for R2
304    o cleanup verification/*/code/GMREDI_OPTIONS.h
305    o cleanup testreport
306    
307    checkpoint51o_post
308    o bringing AD-related verif's up to date with genmake2
309      - carbon/
310      - global_ocean.90x40x15/
311      - hs.94.1x64x5/
312      - (front_relax/ )
313    o (more) consistent directory structure for AD-related verif.'s
314    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
315    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
316    o bug fix in find_alpha.F for MDJWF:
317      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
318        change rho -> rho-rhoConst
319      - replace call find_rho to find_rhonum
320    o initialisation of rFlx extended to full array (required by TAF)
321      and shifted to thermodynamics
322    o removed PTRACERS.h in ptracers routine
323    o added surfacetendencyPtr to S/R parameter list pracers_forcing
324    o Correcting initialisations for fVerU, fVerV.
325    o helping TAF to recognize dependency on kUp for
326      fVerU, fVerV
327    o Replacing delZ by delR in pkg/ctrl/
328    checkpoint51o_pre
329    
330    o undid all of cp51 pending some cleanups and discussion
331    o added the [#include "AD_CONFIG.h"] statement to all files that need
332       it for adjoint/tl #defines
333     o re-worked the build logic in genmake2 to support AD_CONFIG.h
334     o removed tools/genmake since it no longer works
335    
336    checkpoint51n_post
337    o modifications to make FREEZE flux visible to pkg/kpp
338      - moved surfaceTendencyTice from pkg/seaice to main code
339      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
340      - subroutine FREEZE now limits only surface temperature
341        (this means new output.txt for global_ocean.90x40x15,
342         global_ocean.cs32x15, and global_with_exf)
343    o added surface flux output variables to TIMEAVE_STATVARS
344    
345    checkpoint51n_pre
346    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
347    o added [#include "AD_CONFIG.h"] to all files that use the following
348      defines:
349      - ALLOW_ADJOINT_RUN
350      - ALLOW_TANGENTLINEAR_RUN
351      - ALLOW_ECCO_OPTIMIZATION
352    
353    checkpoint51m_post
354    o incorporating changes to get TAMC/TAF working in genmake2
355      - added new TAMC/TAF targets to the Makefile
356      - various cleanups related to package handling
357      - these changes should have no impact on the forward model
358    
359    checkpoint51l_post
360    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
361     - faster algorithm for cal_addtime.F
362     - higher precision arithmetic, where needed
363     - pkg/exf *startdate variables changed from calendar date to
364       model integration time
365    
366    checkpoint51l_pre
367    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
368    o enable to apply restoring on S & T only in a latitude band.
369    o update output (external_forcing_surf modif. change truncation errors)
370       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
371    
372    checkpoint51k_post
373    o change default to: useNHMTerms=.FALSE.
374     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
375       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
376     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
377        exp1, ideal_2D_oce
378     - change data file of oceanic exp (leave the results unchanged for now)
379       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
380    o set gravitySign automatically according to the vertical coordinate used
381      (and change sign: back to "logical" value: +1 when R increases downward)
382    o added an include barrier to the default CPP_OPTIONS.h and
383      removed the #include "PACKAGES_CONFIG.h" from it
384    o fix a bug in mom_fluxform (from chk51j_post)
385    
386    checkpoint51j_post
387    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
388    o adjusted some flow directives (dynamics, thermodynamics)
389    o added cubed-sphere case to test cost function
390    o heckpoint_lev?_directives.h now include
391      pkg-specific directives, whenever those are enabled.
392    o Moving pkg-specific flow directives to corresponding pkg
393      Moving pkg-specific differentiation list to corresponding pkg
394      Moving pkg-specific checkpoint-lev storing to corresponding pkg
395      ---> conventions are
396           - pkg_ad.flow
397           - pkg_ad_diff.list
398           - pkg_ad_check_lev?_dir.h
399    
400    checkpoint51i_post
401    o merge of the branch-genmake2
402      - knowingly breaks the older genmake
403      - automatic generation of all ALLOW_${PKG_NAME} defines
404      - new testreport supersedes older testscript
405    o large number of package inclusion and header cleanups
406    checkpoint51i_pre
407    
408    o new output for adjoin of global ocean vector invariant
409    o fix for checkpoint of thermodynamic seaice and bulk_force
410    o Steph gchem various cleanups
411    
412    checkpoint 51h_pre
413    o fixed some single quotes
414    o modify gchem pkg to be more versatile
415    o modifications to clean up dic pkg
416    o add pkg/cfc
417    
418    checkpoint51g_post
419    o provide links for ARPACK and ADM*TLM
420    o start removing verification/vero/
421    o update AD-related stuff
422      (in particular some IF-statements in model/src/ routines)
423    o adding to verification/global_ocean.90x40x15/ adjoint of
424      vector invariant setup
425    
426    checkpoint51f_post
427    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
428    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
429      of tracer Green's fucntions for ocean inversion project.
430    
431    checkpoint51f_pre
432    o Added on-the-fly spatial interpolation capability
433        "USE_EXF_INTERPOLATION" to pkg/exf.
434      - This is a temporary Cartesian-grid hack until
435        the super-duper ESMF coupler becomes available.
436      - See verification/global_with_exf/README for usage example.
437      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
438        flags and modified pkg/seaice accordingly.
439    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
440        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
441        non-local transport term.
442    
443    checkpoint51e_post
444    o pkg/mom_vecinv:
445      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
446      - add time-ave diagnostic of vorticity advection.
447    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
448    o atmospheric geopotential: - include water vapor effect;
449                                - use p^kappa in p* scaling.
450    o land pkg: read initial state from files.
451    o AIM : add stratospheric drag in the upper level
452    
453    checkpoint51d_post
454    o change function ILNBLNK (=> last non-blank char.) to return zero
455      (instead of the string length) when the string. char is empty
456    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
457    o modif's to restore TAMC compatibility
458      - avoid "_d" constructs in PARAMETER declarations
459      - avoid interrupting lines by comment lines
460    o Use cluster local disks for purely local I/O
461      vs. globally visible disks needed for ctrl stuff
462      (merged from ecco-branch)
463      - new active_file_loc... and mdsio_..._loc routines
464      - affected packages: autodiff, ctrl, grdchk, mdsio
465    
466    checkpoint51c_post
467    o introducing integer flag debugLevel
468      - debLevZero: suppress all output
469      - debLevA: standard
470      - debLevB: equivalent to current debugMode=.TRUE.
471    o introducing pathname variable mdsioLocalDir for mdsio
472      that can be specified at runtime
473      (relevant for cluster I/O to local disk)
474    `
475    >>>checkpoint51b_post
476    adjoint of ptracers
477    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
478    o extended state in checkpoint_lev?, etc.
479    o alternative ctrl/cost with tr1 or ptracer
480    o new comlev1_bibj_ptracers
481    o new ptracers.flow
482    o made ptracers_forcing same as external_forcing_s
483    o added verification for adjoint with ptracers
484      - adm. grdchk fail so far
485      - tlm. grdchk OK
486      - checked tapelev/comlev recomputations: OK
487    <<<checkpoint51b_pre
488    
489    checkpoint51a_post
490    o added code for biogeochemistry package
491      - new pkgs: dic, gchem
492      - new subroutine in ptracers
493    o modify code for biogeo packages
494      - in model/src and pkg/ptracers
495    
496    checkpoint51
497    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
498      - autodiff, ctrl, exf, grdchk, seaice
499      kept separate packages
500      - cost, ecco, obcs
501    o updating verification/internal_wave, verification/lab_sea
502      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
503    
504    checkpoint50i_post
505    o Preparing next differentiable checkpoint and sync
506      of MAIN vs. ecco-branch
507      - 1st step: this one is differentiable
508      - 2nd step: next(! not this) checkpoint will have updated packages
509                  from ecco-branch)
510    
511    checkpoint50h_post
512    o new package "land": provide surface BC for AIM.
513    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
514    o AIM: use true log-P extrapolation for near surface temp (= as in
515        F.Molteni paper) ; update aim.5l_cs output.
516    o New variable in PARM03 for more flexible pickups
517    o somewhat cleaned package initialisation sequence for
518      ctrl/ cost/ ecco/ in packages_... routines
519    
520    checkpoint50g_post
521    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
522      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
523      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
524        made the default because of faster convergence than ADI
525    
526    checkpoint50f_post
527    o exf totally restructured
528      - replaced all exf_set_ routines by one generic exf_set_gen.F
529        and made sure it's still differentiable
530      - split exf_getffields.F into new exf_bulkformulae.F
531      - exf_inscal_/exf_outscal_ suffixes consistent with field names
532      - updated adjoint/makefile and relevant verif. accordingly
533    
534    checkpoint50f_pre
535     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
536          + change Evap over land. (update aim.5l_cs output)
537     o added missing .cvsignores and made uniform across expts
538     o changed configuration of tidal_basin_2d expt
539     o added pkg/debug functions for tracing code in fatal crashes
540     o tidied pkg/monitor to use MONITOR_OPTIONS.h
541     o new fn in pkg/monitor to stop model if solution grows too big
542     o removed lots of single quotes from comments
543    
544    checkpoint50e_post
545    o make KPP work with PTRACERS
546     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
547       nearly a copy of kpp_transport_s
548     - there is no analogue to SurfaceTendencyS, so I have to use
549       gPtr(of the surface layer) instead
550    o add a new platform SunFire+mpi (SunFire 15000) to genmake
551    checkpoint50e_pre
552    
553    checkpoint50d_post
554    o change kpp output from multiple-record state files to single-record state
555      files analogous to write_state.F
556    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
557      analogous to the cg2d-related output.
558    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
559      so that writing to internal file fn (with length 512) fails.
560    checkpoint50d_pre
561    
562    checkpoint50c_post
563    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
564    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
565    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
566    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
567    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
568    
569    checkpoint50c_pre
570    Merging from release1_p13:
571    o bug fix for pkg/seaice dynamic solver
572    o Added SEAICE_initialHEFF to pkg/seaice
573    
574    checkpoint50b_post
575    o store u*,v* in gU,V instead of in guNm1,gvNm1
576    o in order to put the momForcing out of the Adams-Bashforth:
577      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
578      to timestep.F
579    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
580    o re-generate output for highly sensitive test-exp:
581       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
582    
583    checkpoint50b_pre
584    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
585    o corrected CPP option mismatch in exf_Bulk... functions for case
586      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
587    
588    checkpoint50a_post
589    o Bug fix for merging between c50 and KPP.
590      ikey was passed from thermodynamics to kpp_calc via
591      common block rather than being recomputed in kpp_calc,
592      in contradiction with new key itdkey.
593      New key ikppkey created, and tamc.h headers updated.
594    
595    checkpoint50
596    - 2nd step of merge with ecco-branch:
597      merge changes in ecco-branch back into main trunk
598    - bug fix in find_alpha
599    - more storing in gmredi_calc_tensor.F, kpp_routines.F
600    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
601    - merged some sliced AD support routines
602    
603    checkpoint49
604    merged from ecco-branch:
605    o exf:
606      - Enable initialisation of forcing fields to constant
607        (runtime) values.
608      - in exf_getffields.F
609        Reduce i-/j-loop to interior domain, discarding overlaps.
610        That also fixes wrong TAF-key computations for key_1, key_2
611        with bulf formulae.
612      - exf_init.F modify #ifdef for exf_init_evap
613      - exf_getffieldrec.F, ctrl_getrec.F
614        The following INT-usages are not safe:
615          fldsecs  = int(fldsecs/fldperiod)*fldperiod
616          fldcount = int(fldsecs/fldperiod) + 1
617        and were modified.
618    o autodiff: checkpoint_lev...
619      - updated storing for bulk formulae (some arrays were missing)
620      - added state for seaice package
621      - synchronized with main branch
622    o DIVA:
623      Modif.s in
624      - the_main_loop.F
625      - the_model_main.F
626      and added cost_final_restore.F cost_final_store.F
627      o With these changes, it is possible to fully separate
628        the first forward run to compute the cost function (mdthe_main_loop)
629        and adjoint runs over individual DIVA intervals (adthe_main_loop)
630        into separate model executions.
631        This enables better tuning of DIVA to given queue sizes.
632      o Loss of cost function value in consecutive DIVA runs is
633        fixed by storing to 'costfinal' file.
634      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
635        beginning/end of adjoint integration is accounted for.
636      The current changes apply to TAF-1.4.26.
637      TAF has one remaining bug, requiring one manual change
638      (see MITgcm manual).
639    o cal: synchronized between MAIN and ecco-branch
640    
641    checkpoint48i_post
642    o Changes to restore differentiability of code w.r.t. previous tag
643      (mostly adding new routines to make list and replacing
644      pressure by totPhiHyd).
645    o Updated and merged grdchk package
646      - has both ADM and TLM checks
647      - works for single- and multi-proc.
648      - output cleaned
649      - worked successfully for parallel DIVA
650    o genmake:
651      - Adding -platform=SP4
652      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
653    o Modif. for DIVA:
654      ctrl_unpack should not be called in intermediate DIVA interval.
655      (similar thing would apply for active files such as
656      tbar, sbar, psbar, which should not be reinitialised;
657      only relevant for ecco-branch)
658    
659    checkpoint48h_post
660    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
661    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
662    o Added SEAICE_initialHEFF to pkg/seaice
663    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
664    
665    checkpoint48g_post
666    --- EOS:
667    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
668      store total Potential in totPhyHyd for diagnostics & EOS.
669    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
670    --- Pressure/geopotential gradient:
671    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
672    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
673      ( changes results of global_ocean_pressure )
674    o NLFS + z-coord.: add eta*Rho' contribution.
675    o accurate phiHyd when using interface-W at the middle between 2 centers
676     ( changes results of ideal_2D_oce )
677    o includes r* 2nd term in potential gradient.
678    
679    checkpoint48f_post
680    Merging from release1_p12:
681    o Modifications for using pkg/exf with pkg/seaice
682      - improved description of the various forcing configurations
683      - added basic radiation bulk formulae to pkg/exf
684      - units/sign fix for evap computation in exf_getffields.F
685      - updated verification/global_with_exf/results/output.txt
686    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
687      (SBO) core products, including oceanic mass, center-of-mass,
688      angular, and bottom pressure (see pkg/sbo/README.sbo).
689    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
690      to avoid negative values in shallow regions.
691      - updated verification/natl_box/results/output.txt
692      - updated verification/lab_sea/results/output.txt
693    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
694    o Added useSingleCpuIO option (see PARAMS.h).
695    o Updated useSingleCpuIO option in mdsio_writefield.F to
696      work with multi-field files, e.g., for single-file pickup.
697    o pkg/seaice:
698      - bug fix in growth.F: QNET for no shortwave case
699      - added HeffFile for specifying initial sea-ice thickness
700      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
701    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
702      kpp_transport_t.F, forward_step.F, and the_main_loop.F
703    o pkg/seaice:
704      - adjoint-friendly modifications
705      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
706    
707    checkpoint48e_post
708    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
709    o dynamics: change definition of computational domain & adapt mom_fluxform
710      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
711    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
712        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
713        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
714        global_ocean.90x40x15 global_with_exf global_ocean_pressure
715        inverted_barometer solid-body.cs-32x32x1
716      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
717    
718    checkpoint48d_post
719    o in preparation for r*:
720     a) use pre-computed gradient of hydrostatic potential:
721        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
722     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
723        => affects results of glob_oce_pressure (different truncation error)  
724      update output.txt of ideal_2D_oce & global_ocean_pressure
725    
726    checkpoint48d_pre
727    o in preparation for r*:
728      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
729      pass the 2 comp. of the grad. as arguments to momentum S/R.
730      but for the moment, only used if it does not change the results.
731    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
732    
733    checkpoint48c_post
734    Modifications in treatment of initial flux forcing controls
735    to avoid extra storing of flux fields.
736    
737    checkpoint48c_pre
738    o Added tidal_basin_2d experiment (currently 1D!)
739    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
740    
741    checkpoint48b_post
742    o r* coordinate added in #ifdef NONLIN_FRSURF block.
743     (modification to pressure gradient not yet implemented)
744    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
745      (for U & V) that are used for vertical advection of momentum.
746    
747    checkpoint48a_post
748    o In preparation for r*, use temp. array to compute vertical transport
749       in flux-form momentum pkg. => change results of few test-exp.
750      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
751                        lab_sea, natl_box & plume_on_slope
752    
753    checkpoint48
754    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
755    
756    checkpoint47j_post
757    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
758    o moved adexch from forward_step to addummy_in_stepping
759    o added exch in ctrl_map_...
760    o aveFreq.=0. at end of cost_final to avoid overwrite in
761      reverse checkpointing loop
762    o Yet more changes in gmredi:
763      * adgmredi_calc_tensor
764        avoiding all recomputation of gmredi_slope_limit
765      * adgmredi_x/y/rtransport
766        added flag for excessive storing to avoid recomp. of
767        u/v/rtans, dTdx/y/z
768        -> this is not really necessary and very memory-consuming
769      * adgmredi_slope_psi:
770        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
771      * gmredi_slope_limit
772        re-activated full calculation of taperfct for case 'ac02'
773    o updating verification/ adjoints of carbon, global_ocean.90x40x15
774    
775    checkpoint47i_post
776    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
777    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
778      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
779    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
780    o gmredi: fix few bugs.
781    
782    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
783    This will be a good checkpoint to plug into the ecco-branch.
784    o few modif.'s to get latest version adjointed
785      (mainly kick out code in ini_linear_phisurf)
786    o modif's to run adjoint with exactConserv
787    o case GM_BOLUS_ADVEC should be cleaned
788      S/R gmredi_slope_psi should be cleaned
789    o verification/carbon now has exactConserv=.TRUE.
790    
791    checkpoint47g_post
792    o time-average AIM output: becomes independent from statvars time-average
793      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
794    o After TAF bug fix:
795      Tested adjoint of gmredi package.
796      Tests were done with checkpoint47 rather than with latest
797      checkpoint47f_post since the latter is broken for the adjoint
798      verification/carbon/ contains both ADM and TLM gradient checks.
799    Here they are, before they get changed/lost/stolen.
800    Mostly modif.'s to fix numerical sensitivities.
801    Gradient checks OK for
802    - GM_taper_scheme:
803      * clipping
804      * ac02
805      * linear
806      * glw91
807      * dm95
808      * ldd97
809    - GMREDI_OPTIONS:
810      * GM_VISBECK_VARIABLE_K
811      * GM_NON_UNITY_DIAGONAL
812      * GM_EXTRA_DIAGONAL
813      * GM_BOLUS_ADVEC
814    in conjunction with data.gmredi parameters to be checked in
815    in a few minutes under verification/carbon/code/
816    
817    checkpoint47f_post
818    Merging from release1_p10:
819    o modifications for using pkg/exf with pkg/seaice
820      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
821        and SEAICE_EXTERNAL_FLUXES
822      - pkg/exf CPP options EXF_READ_EVAP and
823        EXF_NO_BULK_COMPUTATIONS
824      - usage examples are Experiments 8 and 9 in
825        verification/lab_sea/README
826      - verification/lab_sea default experiment now uses
827        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
828    
829    checkpoint47e_post
830    o created a tag prior to creating a branch
831    
832    checkpoint47d_post
833    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
834      at the bottom boundary had an erroneous half slip boundary condition
835    o added bottom drag and no slip boundary condition capabilities to
836      oceanic pressure coordinates code
837    o added new verification experiment global_ocean_pressure, this experiment is
838      also described in the tutorial section of the manual
839    checkpoint47d_pre
840    
841    checkpoint47c_post
842    o Added a verification experiment for a global cubed-sphere ocean run
843      -  verification/global_ocean.cubed32x32x30
844      -  uses pkg/therm_seaice and pkg/bulk_forcing
845    
846    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
847    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
848      when using P-coordinate; only implemented for atmospheric config.
849    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
850      NOTES: requires option NONLIN_FRSURF to be "#define".
851    o update advect_xz/results/output.txt (left from checkpoint44g_post)
852    
853    checkpoint47b_post
854    Merging from release1_p9:
855    o pkg/seaice
856      - removed GOTO's and added taf directives
857      - double precision constants to reduce the g77 (Linux)
858        to F77 (SGI) differences reported in release1_p8
859    o tools/genmake
860      - added SGI options
861    o verification/testscript
862      - updated to that of checkpoint47a_post
863    o verification/global_ocean.90x40x15/input/eedata
864      - modified for SGI f77 compatibility
865    o verification/lab_sea
866      - added description of sea-ice model
867      - added missing matlab routines
868      - added test of thermodynamics parallelization
869    
870    checkpoint47a_post
871    o new pkg: aim_v23
872     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
873       for now, keep the same surface forcing as before.
874     - Part-Cell implemented into AIM; check that Heat & Water are conserved
875     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
876     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
877    o add diagnostic of surface correction term in monitor output
878    
879    o bulk_force and therm_seaice
880    - Two packages:  bulk_force (Bulk forcing)
881      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
882    - Earlier integration from Stephaine Dutkiewicz
883      and Patrick Heimbach.
884    - Two ifdef statements for compile time,
885       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
886    
887    checkpoint47
888    differentiable version of checkpoint46n_post
889    o bug fix in quasihydrostaticterms
890    o * "clean" adjoint code (in terms of extensive recomputations)
891        can now be obtained for all GMREDI options (i.e. for
892        - GM_VISBECK_VARIABLE_K
893        - GM_NON_UNITY_DIAGONAL
894        - GM_EXTRA_DIAGONAL
895        - GM_BOLUS_ADVEC )
896      * However, wrong gradient check problem remains unsolved.
897      * New CPP options have been introduced for different
898        tapering schemes
899    o external_fields_load now part of differentiation list
900    o pressure needs multiple storing;
901      would be nice to have store_pressure at beginning or
902      end of forward_step, e.g. by having phiHyd global (5-dim.)
903      (NB: pressure is needed for certain cases in find_rho,
904      which is also invoked through convective_adjustment).
905    o recomputations in find_rho for cases
906     'JMD95'/'UNESCO' or 'MDJWF' are OK.
907    o #define ATMOSPHERIC_LOADING should be differentiable
908    o ini_forcing shifted to begining of initialise_varia
909    o Incorporating QNVS line search routines into MITgcm
910      (this is separate code, and therefore not under pkg)
911      lsopt/, optim/
912    o Updated verification/carbon/
913      - #define GM_VISBECK_VARIABLE_K
914      - GM_taper_scheme    = 'ldd97'    
915    
916    checkpoint46n_post
917    Merging from release1_p8:
918    o verification/natl_box:
919      updating new external_fields_load routine
920    o New package: pkg/seaice
921      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
922      The sea-ice code is based on Hibler (1979-1980).
923      Two sea-ice dynamic solvers, ADI and LSR, are included.
924      In addition to computing prognostic sea-ice variables and diagnosing
925      the forcing/external data fields that drive the ocean model,
926      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
927      The implied surface heat flux is then stored in variable
928      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
929      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
930      non-local transport term.  Because this call precedes model
931      thermodynamics, temperature under sea-ice may not be "exactly" at
932      the freezing point by the time theta is dumped or time-averaged.
933      N.B.: fairly large differences in accuracy occur across
934            different platforms/compilers; comparison between
935            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
936            generated output gives:
937       T           S           U           V
938      C D M    c        m  s        m  s        m  s        m  s
939      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
940      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
941      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
942    
943      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
944    o GAD:
945      - generated new common blocks to account for call of
946        same gad routines with differing traceridentities
947        (needed to modify tracerIdentity indices in GAD.h)
948      - generated separate common blocks for case useCubedSphereExchange
949        (Department of Futurology)
950      - parameter lists to gmredi_?transport: added tracerIdentity
951      - added new key indices to tamc.h
952    o external_fields_load:
953      - added this routine to TAF list
954      - needed to make some common blocks global and additional storing
955        along the same lines as exf package (checkpoint_lev?_directives.h)
956    o exf:
957      updated external forcing package
958      - bug fixes carried over from ecco-branch
959        (missing OBCS_OPTIONS.h in two routines)
960      - enable easy to use "no forcing".
961      - added exf I/O for atmospheric loading
962      - added exf I/O for runoff data
963      - transfered scaling between exf <-> MITgcm to exf namelist
964    o Adding new verification experiment global_with_exf.
965      This verification experiment is almost identical to the
966      global_ocean.90x40x15 experiment, except that it uses
967      the exf (and cal) package instead of the
968      external_fields_load routine (cf README file).
969    
970    checkpoint46m_post
971    o modified testscript to return -- when there are no lines of "%MON" output
972    o added new flag "quasiHydrostatic" for QH mode
973      and new routine quasihydrostaticterms()
974    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
975      New routine: mom_u_coriolis_nh()
976    o fixed sign of non-hydrostatic metric terms in u and v equations.
977      Depend on correct sign of gravitySign.
978    o added work.pc* to .cvsignore in aim directories using ifc
979    o introduced flag for controllin non-hydrostatic metric terms
980    o removed gravitySign from PARM04
981    o switched to g77/ifc from pgf77 in aim experiments
982    
983    checkpoint46l_post
984    o made convective adjustment work with pressure coordinates:
985     - changed the direction of k-loop in convective_adjustment.F for the
986       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
987     - adjusted the reference pressure k-index in convective_adjustment.F
988     - adjusted the convection condition in convect.F (in analogy to
989       calc_ivdc.F)
990     - convective_adjustment no longer computes anything on the halos
991     - removed the warnings about negative salinity from find_rho.F and
992       find_alpha.F; instead the new routine look_for_neg_salinity, called
993       at the beginning of find_rho, find_alpha, and find_beta, does a
994       check of the entire slice, if CPP-option
995       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
996    checkpoint46l_pre
997    
998    checkpoint46k_post
999    o fixed the verification/global_ocean.90x40x15 experiment:
1000     - new bathymetry (the world according to A., JMC, and M.)
1001     - new initial fields and forcing fields (*.bin files)
1002     - new POLY3.COEFFS (for the next release one should switch to a full
1003       equation of state: JMD95P or MDJWF)
1004     - fixed several errors and redundancies in the data file
1005     - experiment uses looped cells
1006     - added matlab directory with diagnostic scripts for plotting of output
1007    
1008    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
1009     - read AIM physics parameters from a file (data.aimphys)
1010     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
1011    
1012    checkpoint46j_post
1013    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
1014    o move wVel computation at the end of the time step, in S/R integr_continuity
1015    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
1016    o update timeave pkg for wVel diagnostic.
1017    checkpoint46j_pre
1018    
1019    checkpoint46i_post
1020    o Clean up AIM package (and keep the results unchanged):
1021      include CPP_OPTION and use IMPLICT NONE in all routines ;
1022      declare all the variables _RL ; use _d 0 for all numerical constants.
1023      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
1024    
1025    checkpoint46h_post
1026    o cleaned up the use of rhoNil and rhoConst.
1027      - rhoNil should only appear in the LINEAR equation of state, everywhere
1028        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
1029        and the dynamical equations are all divided by rhoConst
1030    o introduced new parameter rhoConstFresh, a reference density of fresh
1031      water, to remove the fresh water flux's dependence on rhoNil. The default
1032      value is 999.8 kg/m^3
1033    o cleanup up external_forcing.F and external_forcing_surf.F
1034      - can now be used by both OCEANIC and OCEANICP
1035    checkpoint46h_pre
1036    
1037     Added code to convert surface volume flux (fresh water) into
1038     a mass flux when using P coordinates in the ocean (OCEANICP).
1039     Note: It assumes you have set rho0=rhoConst=density of fresh water.
1040    
1041    checkpoint46g_post
1042    o Include a new diagnostic variable phiHydLow for the ocean model
1043      - in z-coordinates, it is the bottom pressure anomaly
1044      - in p-coordinates, it is the sea surface elevation
1045      - in both cases, these variable have global drift, reflecting the mass
1046        drift in z-coordinates and the volume drift in p-coordinates
1047      - included time averaging for phiHydLow, be aware of the drift!
1048    o depth-dependent computation of Bo_surf for pressure coordinates
1049      in the ocean (buoyancyRelation='OCEANICP')
1050      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
1051        Theta, Salinity, and Pressure in the parameter list. This routine is
1052        presently contained in find_rho.F. This routine does not give the
1053        correct density for 'POLY3', which would be a z-dependent reference
1054        density.
1055    o cleaned up find_rho
1056      - removed obsolete 'eqn' from the parameter list.
1057    o added two new verification experiments: gop and goz
1058      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
1059    checkpoint46g_pre
1060    
1061    checkpoint46f_post
1062    o Enable tangent linear (forward mode) gradient checks:
1063      - extended active file handling to g_... files
1064      - added TANGENT_SIMULATION to theSimulationMode
1065      - extended grdchk package accordingly
1066    o added tangent linear setup in verification/carbon/code_ftl
1067    o added adjoint setup in verification/front_relax/code_ad
1068    
1069    checkpoint46e_post
1070    o Added new equation of state -> MDJWF
1071      - EOS of McDougall et al., 2002, JAOT, submitted
1072      - caveat: the equation of state is only valid for a smaller (more
1073        realistic?) range of values than JMD95P/Z and UNESCO
1074      - added masks to the calculation of pressure in store_pressure
1075      - added more check values for density in check_eos (ini_eos.F), some of
1076        the old check values are out of the range of the MDJWF-eos, so don't
1077        expect perfect matches for those
1078    checkpoint46e_pre
1079    
1080    checkpoint46d_post
1081    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
1082      'OCEANICP', also initialised field pressure correctly in ini_eos in the
1083      case of pressure coordinates. eosType='JMD95Z' in
1084      combination with buoyancyRelation='OCEANICP' now causes an error.
1085    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
1086      in find_alpha/beta.
1087    checkpoint46d_pre
1088    
1089    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
1090      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
1091    
1092    checkpoint46c_post
1093    o Changes necessary for ocean in p-coordinates
1094     -  Added new buoyancy relation = 'OCEANICP'
1095     -  Added new parameters = gravitySign (this used to be contained inside
1096        the factor dRdZ which I added when we first switched to R coordinates).
1097     X GM/Redi is not compatible (yet)
1098     X bottom drag and no-slip need to be debugged.
1099    checkpoint46c_pre
1100    
1101    checkpoint46b_post
1102    o Added new equation of state -> JMD95Z and JMD95P
1103      - EOS of Jackett and McDougall, 1995, JAOT
1104      - moved all EOS parameters into EOS.h
1105      - new routines ini_eos.F, store_pressure.F
1106    o Added UNESCO EOS, but not recommended because it requires
1107      in-situ temperature (see JMD95)
1108    o Modified formatting for knudsen2.f in utils/knudsen2 and added
1109      unesco.f to be used with POLY3
1110    checkpoint46b_pre
1111    
1112    checkpoint46a_post
1113    o Added (atmospheric) pressure loading
1114      - new field in FFIELDS.h, etc...
1115      - new cpp flag ATMOSPHERIC_LOADING
1116    o Changed hFacC to _hFacC in calc_phi_hyd.F
1117    o Added SHORTWAVE_HEATING to some files for consistency
1118    checkpoint46a_pre
1119    
1120    checkpoint46
1121    further merges from release1_p5
1122    o new ctrl package
1123      - adopted from ECCO environment to enable optimization
1124      - added Eliassen Palm fluxes to controls
1125    o added Eliassen Palm flux controls to gradient check package
1126    o cost package
1127      - Compatible with new ctrl package
1128      - added Eliassen Palm cost hooks
1129      - modif's of existing cost functions
1130    o Adjoint-related bug fixes in kpp:
1131      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
1132      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
1133    o autodiff package
1134      - flow directives:
1135        + new for S/R do_the_model_io
1136        + enhanced for S/R checkpoint
1137        + new gmredi.flow
1138      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
1139        disable adcommon.h/g_common.h by default.
1140      - fixed problem for adjoint of global_max
1141    o modified verification/carbon/
1142    o New setup for adjoint of global_ocean
1143    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
1144    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
1145    o incorporated hooks for sponge layer code (external_forcing.F)
1146    
1147    checkpoint45d_post
1148    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
1149  o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S  o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
1150    (affects plume_on_slope "cg2d" output)    (affects plume_on_slope "cg2d" output)
1151    o add new parameter deltaTfreesurf for free-surface time stepping
1152    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
1153  o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B  o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
1154  o change phiMin in exp1 (to agree with documentation)  o change phiMin in exp1 (to agree with documentation)
1155  o add new flags:  o add new flags:

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