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revision 1.69 by heimbach, Sun Mar 24 02:44:49 2002 UTC revision 1.268 by jmc, Fri Mar 12 20:57:21 2004 UTC
# Line 2  $Header$ Line 2  $Header$
2    
3      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
4      ==============================      ==============================
5    o thermodynamics sea-ice (thsice) is now tested with testreport.
6    o test exp. advect_cs: use the standard cs32 grid ; update output.
7    
8    checkpoint52l_post
9    o new land formulation:
10      a) use ground enthalpy as prognostic variable to ensure exact
11         energy conservation.
12      b) account for water temperature and for latent heat of freezing
13         in all processes (rain, run-off, ground storage)
14      c) compute surface and ground temperature implicitly.
15    o aim_v23 modification for new land model:
16      a) Treat separately land / ocean / sea-ice surface fluxes
17         to allow implicit computation of land & sea-ice surface temp.
18      b) add snow precipitation.
19    checkpoint52l_pre
20    
21    o fix problem (when 1 tile is empty) in min/max monitor.
22    o fix bug in timeAve (u,vZetatave in common block)
23    o no restoring terms under ice for pkg/seaice
24    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
25    o bug fix for pkg/seaice pickups
26    o change MNC call locations and add coordinate attributes
27    o mask vorticity at the corner ; affects global_ocean.cs output
28    o fix ini_curvilinear_grid ; test CS experiments with mpi
29    o aim.5l_cs: modify sea-ice fraction input file ; update output
30    o exf: Adding simple range check routine for exf fields after read
31    
32    checkpoint52k_post
33    o removed top-level directory "diags"
34      - we migrated these functions to pkg/timeave a long time ago
35    o fixed bug introduced in pkg/monitor
36    o accuracy ctrlprec = 32 insuffient for gradient checks using
37      averaged fields (I/O via cost_averages)
38      -> use ctrl.h in active_file*.F to control I/O precision.
39    o paramter list of CALL ADTHE_MAIN_LOOP
40    o added initial do_the_model_io to ecco
41    o set all ...Freq to zero after cost_final
42      taveFreq, dumpFreq, pChkptFreq
43    o MAIN and ECCO differentiability restored
44    
45    checkpoint52j_post
46    o fix nchklev in tamc.h for global_ocean...
47    o Bringing flow and store directives up-to-date
48    o Really weird thing!
49      call do_the_model_io from the_main_loop with parameters
50      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
51      TAF places a faulty re-call of initialise_varia
52      after cost_final call which should not be there!
53    checkpoint52j_pre
54    
55    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
56      error messages
57    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
58    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
59      debug output
60    o modfied mdsio_writefield.F to handle non-global files under exch2
61    o update AIM Cubed-Sphere exp (aim.5l_cs):
62      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
63    o update AIM Equatorial Channel exp:
64      use standard aim_v23 pkg and change the SST fields to be more realistic.
65    o globalFile now works with exch2
66    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
67      mon_vort3.F to make exch2 friendly with >1 tile per cube face
68    o limit timeave output for hi-res integrations
69    
70    checkpoint52i_post
71    o removed CPP_EEOPTIONS.h from verification/*/code
72    o updated the tiling for global_ocean_pressure
73    checkpoint52i_pre
74    
75    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
76      the old pkg/aim).
77    
78    checkpoint52h_pre
79    o shortened offending lines in exch2_send_rx?.template
80    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
81    o genmake2: add build & execute test for NetCDF code
82    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
83      old grid files, moved CPP_EEMACROS.h to pkg/exch2
84    o added useSingleCPUIO flag to monitor.F and mon_out.F
85    o added temporary hack for sea-ice dynamics on the cube:
86      metric terms are ignored and it is assumed that
87      there is no sea-ice on cube faces 1, 2, 4, and 5.
88    
89    checkpoint52f_post
90    o added exch2 cube routines to pkg/exch2
91    o modified hs94.cs-32x32x5 to use it
92    o added new grid files to hs94.cs-32x32x5
93    checkpoint52f_pre
94    
95    checkpoint52e_post
96    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
97      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
98    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
99      to work with implicit vertical advection and AB ;
100    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
101    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
102     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
103    checkpoint52e_pre
104    
105    o fix bug in impldiff when Nr=1 or Nr=2.
106    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
107    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
108    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
109      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
110    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
111    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
112    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
113    
114    checkpoint52d_post
115    o re-tiled many expts to allow comparison in multi-processor mode
116      - updated output accordingly
117      - changed hs94.128x64x5 to use intial T from file rather than use the
118        random number generator
119    o add infrastructure in model routines for fizhi and gridalt packages
120    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
121    o changes to permit hi-res, cubed-sphere, configuration
122      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
123      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
124      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
125        of surface winds for the cube
126      (A verification experiment, based on global_ocean.cs32x15, but with
127       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
128       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
129       complete with example surface forcing files and matlab scripts to look
130       at the output and compare it with that of global_ocean.cs32x15.)
131    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
132       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
133       to conform to the common rule.
134    o check-in the first version of the coupler + interfaces for multi-components
135       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
136       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
137       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
138       - ocean and atmos. share the same horizontal grid (no interpolation).
139       - exchanges between component and coupler is done in forward_step
140    o new verification experiment, cpl_aim+ocn:
141       coupled ocean - AIM atmosphere on cs32 grid.
142    
143    checkpoint52d_pre
144    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
145    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
146    
147    checkpoint52c_post
148    o Fixing OPTIONS files for use of exf:
149      - ALLOW_ECCO not needed
150      - ECCO_CPPOPTIONS.h should not be included from
151        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
152        as has been the case in the past
153      - All cal/exf related options are currently set in
154        single header file. Should remain so until we
155        agree on a consistent new policy.
156    o Removed all CPP options for cal package.
157      cal has no more CPP options.
158    o modified STOREs in GAD_ADVECTION
159    o corrected key comp. for passkey
160    
161    checkpoint52b_post
162    o new version: "thsice" of thermodynamic sea-ice pkg:
163     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
164     - modify fluxes but do not change theta directly;
165     - light cleaning of bulk_force pkg (still needed with thsice).
166     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
167       + output_thsice.txt to test thsice & bulk_force pkgs.
168    o put back grid & coriolis monitor output.
169    checkpoint52b_pre
170    
171    o call "do_the_model_io" at the beginning (=> dump initial state)
172    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
173    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
174      (need info on NUMBER_OF_PTRACERS)
175    o missing PTRACERS headers in some routines
176    o default tamc.h in pkg/autodiff supposed to crash
177      to ensure proper customization
178    
179    checkpoint52a_post
180    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
181      - moved surfaceTendencyTice from pkg/seaice to main code
182      - subroutine FREEZE_SURFACE now limits only surface temperature
183        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
184        => new output.txt for global_ocean.cs32x15 & global_with_exf
185      - keep the old version of FREEZE for backward compatibility;
186        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
187      - corresponding modifs for TAF directives
188    o added surface flux output variables to TIMEAVE_STATVARS
189    o time-averaged output for pkg/ptracers
190    o fix problem with ECCO-related divided adjoint
191      snapshot file was missing some ad-variables,
192      but no warning issued by TAF
193    
194    checkpoint52a_pre
195    o some bug fixes for #undef REAL4_IS_SLOW
196    
197    checkpoint52 = ecco_c52_e35
198    o after testing adjoints of checkpoint51u_post
199    
200    checkpoint51u_post
201    o this is the post-merge tag of the ecco-branch
202      (needs another clean checkout and re-testing)
203    o various natl_box_adjoint configs and results
204      but no input fields
205    o obcs adjoint not yet merged!
206    o adding ECCO global 1x1 and 2x2 degree configs
207    o updated/extended some store directives for seaice
208    o pkg/ecco now containes ecco-specific part of cost function
209    o top level routines the_main_loop, forward_step
210      supersede those in model/src/
211      previous input data.cost now in data.ecco
212      (new namelist ecco_cost_nml)
213    o in ctrl/ cleaned some cross-dependencies and updated CPP options
214    
215    checkpoint51t_post
216    o this is the pre-merge tag of the ecco-branch
217    
218    checkpoint51s_post
219    o cleanup: removed various obsolete #define-s
220    o pkg/grdchk
221      - renamed 'ph-grd 3' to 'grad-res'
222      - merged from ecco-branch
223        (remaining bug fixes for obcs gradient checks)
224      - additional high-precision output for testreport
225        (grep for 'precision_grdchk_result')
226    
227    checkpoint51r_post
228    o cleaned up or removed CPP_OPTIONS.h files
229    o updated results for some of the tests to reflect the new
230      optfiles (-ieee: -O0 instead of -O3)
231    
232    checkpoint51q_post
233    o cd_code:
234      - moved cd_scheme.F -> cd_code_scheme.F
235      - separate read_checkpoint from cd_code_ini_vars.F
236      - separated cd_code part from write_checkpoint
237      - updated AD_SOURCE, generated .flow
238      - added CD_CODE_VARS.h to the_main_loop
239      - Moving cd_code specific store dir.s to pkg/cd_code
240    o ctrl package totally restructured
241      - pack/unpack now optional and decoupled from
242        xx_/adxx_ I/O
243      - ctrl_pack/unpack cleaned
244        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
245      - confined inclusion of AD_CONFIG.h to where necessary.
246    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
247    
248    checkpoint51p_post
249    o create initial cd_code package
250      - WARNING: the initialization of fields within packages
251        is broken because INI_FIELDS (where READ_CHECKPOINT is
252        called) is called *before* PACKAGES_INIT_VARIABLES.
253        This seems to be backwards since
254        1) its important to initially zero the entire field including
255           the "halo" region
256        2) zeroing needs to be done *before* reading pickup info
257           and the pickup call might or might not happen in any
258           particular run
259      - this needs an overhaul for R2
260    o cleanup verification/*/code/GMREDI_OPTIONS.h
261    o cleanup testreport
262    
263    checkpoint51o_post
264    o bringing AD-related verif's up to date with genmake2
265      - carbon/
266      - global_ocean.90x40x15/
267      - hs.94.1x64x5/
268      - (front_relax/ )
269    o (more) consistent directory structure for AD-related verif.'s
270    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
271    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
272    o bug fix in find_alpha.F for MDJWF:
273      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
274        change rho -> rho-rhoConst
275      - replace call find_rho to find_rhonum
276    o initialisation of rFlx extended to full array (required by TAF)
277      and shifted to thermodynamics
278    o removed PTRACERS.h in ptracers routine
279    o added surfacetendencyPtr to S/R parameter list pracers_forcing
280    o Correcting initialisations for fVerU, fVerV.
281    o helping TAF to recognize dependency on kUp for
282      fVerU, fVerV
283    o Replacing delZ by delR in pkg/ctrl/
284    checkpoint51o_pre
285    
286    o undid all of cp51 pending some cleanups and discussion
287    o added the [#include "AD_CONFIG.h"] statement to all files that need
288       it for adjoint/tl #defines
289     o re-worked the build logic in genmake2 to support AD_CONFIG.h
290     o removed tools/genmake since it no longer works
291    
292    checkpoint51n_post
293    o modifications to make FREEZE flux visible to pkg/kpp
294      - moved surfaceTendencyTice from pkg/seaice to main code
295      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
296      - subroutine FREEZE now limits only surface temperature
297        (this means new output.txt for global_ocean.90x40x15,
298         global_ocean.cs32x15, and global_with_exf)
299    o added surface flux output variables to TIMEAVE_STATVARS
300    
301    checkpoint51n_pre
302    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
303    o added [#include "AD_CONFIG.h"] to all files that use the following
304      defines:
305      - ALLOW_ADJOINT_RUN
306      - ALLOW_TANGENTLINEAR_RUN
307      - ALLOW_ECCO_OPTIMIZATION
308    
309    checkpoint51m_post
310    o incorporating changes to get TAMC/TAF working in genmake2
311      - added new TAMC/TAF targets to the Makefile
312      - various cleanups related to package handling
313      - these changes should have no impact on the forward model
314    
315    checkpoint51l_post
316    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
317     - faster algorithm for cal_addtime.F
318     - higher precision arithmetic, where needed
319     - pkg/exf *startdate variables changed from calendar date to
320       model integration time
321    
322    checkpoint51l_pre
323    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
324    o enable to apply restoring on S & T only in a latitude band.
325    o update output (external_forcing_surf modif. change truncation errors)
326       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
327    
328    checkpoint51k_post
329    o change default to: useNHMTerms=.FALSE.
330     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
331       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
332     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
333        exp1, ideal_2D_oce
334     - change data file of oceanic exp (leave the results unchanged for now)
335       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
336    o set gravitySign automatically according to the vertical coordinate used
337      (and change sign: back to "logical" value: +1 when R increases downward)
338    o added an include barrier to the default CPP_OPTIONS.h and
339      removed the #include "PACKAGES_CONFIG.h" from it
340    o fix a bug in mom_fluxform (from chk51j_post)
341    
342    checkpoint51j_post
343    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
344    o adjusted some flow directives (dynamics, thermodynamics)
345    o added cubed-sphere case to test cost function
346    o heckpoint_lev?_directives.h now include
347      pkg-specific directives, whenever those are enabled.
348    o Moving pkg-specific flow directives to corresponding pkg
349      Moving pkg-specific differentiation list to corresponding pkg
350      Moving pkg-specific checkpoint-lev storing to corresponding pkg
351      ---> conventions are
352           - pkg_ad.flow
353           - pkg_ad_diff.list
354           - pkg_ad_check_lev?_dir.h
355    
356    checkpoint51i_post
357    o merge of the branch-genmake2
358      - knowingly breaks the older genmake
359      - automatic generation of all ALLOW_${PKG_NAME} defines
360      - new testreport supersedes older testscript
361    o large number of package inclusion and header cleanups
362    checkpoint51i_pre
363    
364    o new output for adjoin of global ocean vector invariant
365    o fix for checkpoint of thermodynamic seaice and bulk_force
366    o Steph gchem various cleanups
367    
368    checkpoint 51h_pre
369    o fixed some single quotes
370    o modify gchem pkg to be more versatile
371    o modifications to clean up dic pkg
372    o add pkg/cfc
373    
374    checkpoint51g_post
375    o provide links for ARPACK and ADM*TLM
376    o start removing verification/vero/
377    o update AD-related stuff
378      (in particular some IF-statements in model/src/ routines)
379    o adding to verification/global_ocean.90x40x15/ adjoint of
380      vector invariant setup
381    
382    checkpoint51f_post
383    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
384    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
385      of tracer Green's fucntions for ocean inversion project.
386    
387    checkpoint51f_pre
388    o Added on-the-fly spatial interpolation capability
389        "USE_EXF_INTERPOLATION" to pkg/exf.
390      - This is a temporary Cartesian-grid hack until
391        the super-duper ESMF coupler becomes available.
392      - See verification/global_with_exf/README for usage example.
393      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
394        flags and modified pkg/seaice accordingly.
395    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
396        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
397        non-local transport term.
398    
399    checkpoint51e_post
400    o pkg/mom_vecinv:
401      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
402      - add time-ave diagnostic of vorticity advection.
403    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
404    o atmospheric geopotential: - include water vapor effect;
405                                - use p^kappa in p* scaling.
406    o land pkg: read initial state from files.
407    o AIM : add stratospheric drag in the upper level
408    
409    checkpoint51d_post
410    o change function ILNBLNK (=> last non-blank char.) to return zero
411      (instead of the string length) when the string. char is empty
412    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
413    o modif's to restore TAMC compatibility
414      - avoid "_d" constructs in PARAMETER declarations
415      - avoid interrupting lines by comment lines
416    o Use cluster local disks for purely local I/O
417      vs. globally visible disks needed for ctrl stuff
418      (merged from ecco-branch)
419      - new active_file_loc... and mdsio_..._loc routines
420      - affected packages: autodiff, ctrl, grdchk, mdsio
421    
422    checkpoint51c_post
423    o introducing integer flag debugLevel
424      - debLevZero: suppress all output
425      - debLevA: standard
426      - debLevB: equivalent to current debugMode=.TRUE.
427    o introducing pathname variable mdsioLocalDir for mdsio
428      that can be specified at runtime
429      (relevant for cluster I/O to local disk)
430    `
431    >>>checkpoint51b_post
432    adjoint of ptracers
433    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
434    o extended state in checkpoint_lev?, etc.
435    o alternative ctrl/cost with tr1 or ptracer
436    o new comlev1_bibj_ptracers
437    o new ptracers.flow
438    o made ptracers_forcing same as external_forcing_s
439    o added verification for adjoint with ptracers
440      - adm. grdchk fail so far
441      - tlm. grdchk OK
442      - checked tapelev/comlev recomputations: OK
443    <<<checkpoint51b_pre
444    
445    checkpoint51a_post
446    o added code for biogeochemistry package
447      - new pkgs: dic, gchem
448      - new subroutine in ptracers
449    o modify code for biogeo packages
450      - in model/src and pkg/ptracers
451    
452    checkpoint51
453    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
454      - autodiff, ctrl, exf, grdchk, seaice
455      kept separate packages
456      - cost, ecco, obcs
457    o updating verification/internal_wave, verification/lab_sea
458      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
459    
460    checkpoint50i_post
461    o Preparing next differentiable checkpoint and sync
462      of MAIN vs. ecco-branch
463      - 1st step: this one is differentiable
464      - 2nd step: next(! not this) checkpoint will have updated packages
465                  from ecco-branch)
466    
467    checkpoint50h_post
468    o new package "land": provide surface BC for AIM.
469    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
470    o AIM: use true log-P extrapolation for near surface temp (= as in
471        F.Molteni paper) ; update aim.5l_cs output.
472    o New variable in PARM03 for more flexible pickups
473    o somewhat cleaned package initialisation sequence for
474      ctrl/ cost/ ecco/ in packages_... routines
475    
476    checkpoint50g_post
477    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
478      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
479      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
480        made the default because of faster convergence than ADI
481    
482    checkpoint50f_post
483    o exf totally restructured
484      - replaced all exf_set_ routines by one generic exf_set_gen.F
485        and made sure it's still differentiable
486      - split exf_getffields.F into new exf_bulkformulae.F
487      - exf_inscal_/exf_outscal_ suffixes consistent with field names
488      - updated adjoint/makefile and relevant verif. accordingly
489    
490    checkpoint50f_pre
491     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
492          + change Evap over land. (update aim.5l_cs output)
493     o added missing .cvsignores and made uniform across expts
494     o changed configuration of tidal_basin_2d expt
495     o added pkg/debug functions for tracing code in fatal crashes
496     o tidied pkg/monitor to use MONITOR_OPTIONS.h
497     o new fn in pkg/monitor to stop model if solution grows too big
498     o removed lots of single quotes from comments
499    
500    checkpoint50e_post
501    o make KPP work with PTRACERS
502     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
503       nearly a copy of kpp_transport_s
504     - there is no analogue to SurfaceTendencyS, so I have to use
505       gPtr(of the surface layer) instead
506    o add a new platform SunFire+mpi (SunFire 15000) to genmake
507    checkpoint50e_pre
508    
509    checkpoint50d_post
510    o change kpp output from multiple-record state files to single-record state
511      files analogous to write_state.F
512    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
513      analogous to the cg2d-related output.
514    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
515      so that writing to internal file fn (with length 512) fails.
516    checkpoint50d_pre
517    
518    checkpoint50c_post
519    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
520    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
521    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
522    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
523    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
524    
525    checkpoint50c_pre
526    Merging from release1_p13:
527    o bug fix for pkg/seaice dynamic solver
528    o Added SEAICE_initialHEFF to pkg/seaice
529    
530    checkpoint50b_post
531    o store u*,v* in gU,V instead of in guNm1,gvNm1
532    o in order to put the momForcing out of the Adams-Bashforth:
533      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
534      to timestep.F
535    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
536    o re-generate output for highly sensitive test-exp:
537       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
538    
539    checkpoint50b_pre
540    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
541    o corrected CPP option mismatch in exf_Bulk... functions for case
542      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
543    
544    checkpoint50a_post
545    o Bug fix for merging between c50 and KPP.
546      ikey was passed from thermodynamics to kpp_calc via
547      common block rather than being recomputed in kpp_calc,
548      in contradiction with new key itdkey.
549      New key ikppkey created, and tamc.h headers updated.
550    
551    checkpoint50
552    - 2nd step of merge with ecco-branch:
553      merge changes in ecco-branch back into main trunk
554    - bug fix in find_alpha
555    - more storing in gmredi_calc_tensor.F, kpp_routines.F
556    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
557    - merged some sliced AD support routines
558    
559    checkpoint49
560    merged from ecco-branch:
561    o exf:
562      - Enable initialisation of forcing fields to constant
563        (runtime) values.
564      - in exf_getffields.F
565        Reduce i-/j-loop to interior domain, discarding overlaps.
566        That also fixes wrong TAF-key computations for key_1, key_2
567        with bulf formulae.
568      - exf_init.F modify #ifdef for exf_init_evap
569      - exf_getffieldrec.F, ctrl_getrec.F
570        The following INT-usages are not safe:
571          fldsecs  = int(fldsecs/fldperiod)*fldperiod
572          fldcount = int(fldsecs/fldperiod) + 1
573        and were modified.
574    o autodiff: checkpoint_lev...
575      - updated storing for bulk formulae (some arrays were missing)
576      - added state for seaice package
577      - synchronized with main branch
578    o DIVA:
579      Modif.s in
580      - the_main_loop.F
581      - the_model_main.F
582      and added cost_final_restore.F cost_final_store.F
583      o With these changes, it is possible to fully separate
584        the first forward run to compute the cost function (mdthe_main_loop)
585        and adjoint runs over individual DIVA intervals (adthe_main_loop)
586        into separate model executions.
587        This enables better tuning of DIVA to given queue sizes.
588      o Loss of cost function value in consecutive DIVA runs is
589        fixed by storing to 'costfinal' file.
590      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
591        beginning/end of adjoint integration is accounted for.
592      The current changes apply to TAF-1.4.26.
593      TAF has one remaining bug, requiring one manual change
594      (see MITgcm manual).
595    o cal: synchronized between MAIN and ecco-branch
596    
597    checkpoint48i_post
598    o Changes to restore differentiability of code w.r.t. previous tag
599      (mostly adding new routines to make list and replacing
600      pressure by totPhiHyd).
601    o Updated and merged grdchk package
602      - has both ADM and TLM checks
603      - works for single- and multi-proc.
604      - output cleaned
605      - worked successfully for parallel DIVA
606    o genmake:
607      - Adding -platform=SP4
608      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
609    o Modif. for DIVA:
610      ctrl_unpack should not be called in intermediate DIVA interval.
611      (similar thing would apply for active files such as
612      tbar, sbar, psbar, which should not be reinitialised;
613      only relevant for ecco-branch)
614    
615    checkpoint48h_post
616    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
617    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
618    o Added SEAICE_initialHEFF to pkg/seaice
619    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
620    
621    checkpoint48g_post
622    --- EOS:
623    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
624      store total Potential in totPhyHyd for diagnostics & EOS.
625    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
626    --- Pressure/geopotential gradient:
627    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
628    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
629      ( changes results of global_ocean_pressure )
630    o NLFS + z-coord.: add eta*Rho' contribution.
631    o accurate phiHyd when using interface-W at the middle between 2 centers
632     ( changes results of ideal_2D_oce )
633    o includes r* 2nd term in potential gradient.
634    
635    checkpoint48f_post
636    Merging from release1_p12:
637    o Modifications for using pkg/exf with pkg/seaice
638      - improved description of the various forcing configurations
639      - added basic radiation bulk formulae to pkg/exf
640      - units/sign fix for evap computation in exf_getffields.F
641      - updated verification/global_with_exf/results/output.txt
642    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
643      (SBO) core products, including oceanic mass, center-of-mass,
644      angular, and bottom pressure (see pkg/sbo/README.sbo).
645    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
646      to avoid negative values in shallow regions.
647      - updated verification/natl_box/results/output.txt
648      - updated verification/lab_sea/results/output.txt
649    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
650    o Added useSingleCpuIO option (see PARAMS.h).
651    o Updated useSingleCpuIO option in mdsio_writefield.F to
652      work with multi-field files, e.g., for single-file pickup.
653    o pkg/seaice:
654      - bug fix in growth.F: QNET for no shortwave case
655      - added HeffFile for specifying initial sea-ice thickness
656      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
657    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
658      kpp_transport_t.F, forward_step.F, and the_main_loop.F
659    o pkg/seaice:
660      - adjoint-friendly modifications
661      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
662    
663    checkpoint48e_post
664    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
665    o dynamics: change definition of computational domain & adapt mom_fluxform
666      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
667    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
668        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
669        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
670        global_ocean.90x40x15 global_with_exf global_ocean_pressure
671        inverted_barometer solid-body.cs-32x32x1
672      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
673    
674    checkpoint48d_post
675    o in preparation for r*:
676     a) use pre-computed gradient of hydrostatic potential:
677        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
678     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
679        => affects results of glob_oce_pressure (different truncation error)  
680      update output.txt of ideal_2D_oce & global_ocean_pressure
681    
682    checkpoint48d_pre
683    o in preparation for r*:
684      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
685      pass the 2 comp. of the grad. as arguments to momentum S/R.
686      but for the moment, only used if it does not change the results.
687    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
688    
689    checkpoint48c_post
690    Modifications in treatment of initial flux forcing controls
691    to avoid extra storing of flux fields.
692    
693    checkpoint48c_pre
694    o Added tidal_basin_2d experiment (currently 1D!)
695    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
696    
697    checkpoint48b_post
698    o r* coordinate added in #ifdef NONLIN_FRSURF block.
699     (modification to pressure gradient not yet implemented)
700    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
701      (for U & V) that are used for vertical advection of momentum.
702    
703    checkpoint48a_post
704    o In preparation for r*, use temp. array to compute vertical transport
705       in flux-form momentum pkg. => change results of few test-exp.
706      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
707                        lab_sea, natl_box & plume_on_slope
708    
709    checkpoint48
710    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
711    
712    checkpoint47j_post
713    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
714    o moved adexch from forward_step to addummy_in_stepping
715    o added exch in ctrl_map_...
716    o aveFreq.=0. at end of cost_final to avoid overwrite in
717      reverse checkpointing loop
718    o Yet more changes in gmredi:
719      * adgmredi_calc_tensor
720        avoiding all recomputation of gmredi_slope_limit
721      * adgmredi_x/y/rtransport
722        added flag for excessive storing to avoid recomp. of
723        u/v/rtans, dTdx/y/z
724        -> this is not really necessary and very memory-consuming
725      * adgmredi_slope_psi:
726        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
727      * gmredi_slope_limit
728        re-activated full calculation of taperfct for case 'ac02'
729    o updating verification/ adjoints of carbon, global_ocean.90x40x15
730    
731    checkpoint47i_post
732    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
733    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
734      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
735    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
736    o gmredi: fix few bugs.
737    
738    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
739    This will be a good checkpoint to plug into the ecco-branch.
740    o few modif.'s to get latest version adjointed
741      (mainly kick out code in ini_linear_phisurf)
742    o modif's to run adjoint with exactConserv
743    o case GM_BOLUS_ADVEC should be cleaned
744      S/R gmredi_slope_psi should be cleaned
745    o verification/carbon now has exactConserv=.TRUE.
746    
747    checkpoint47g_post
748    o time-average AIM output: becomes independent from statvars time-average
749      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
750    o After TAF bug fix:
751      Tested adjoint of gmredi package.
752      Tests were done with checkpoint47 rather than with latest
753      checkpoint47f_post since the latter is broken for the adjoint
754      verification/carbon/ contains both ADM and TLM gradient checks.
755    Here they are, before they get changed/lost/stolen.
756    Mostly modif.'s to fix numerical sensitivities.
757    Gradient checks OK for
758    - GM_taper_scheme:
759      * clipping
760      * ac02
761      * linear
762      * glw91
763      * dm95
764      * ldd97
765    - GMREDI_OPTIONS:
766      * GM_VISBECK_VARIABLE_K
767      * GM_NON_UNITY_DIAGONAL
768      * GM_EXTRA_DIAGONAL
769      * GM_BOLUS_ADVEC
770    in conjunction with data.gmredi parameters to be checked in
771    in a few minutes under verification/carbon/code/
772    
773    checkpoint47f_post
774    Merging from release1_p10:
775    o modifications for using pkg/exf with pkg/seaice
776      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
777        and SEAICE_EXTERNAL_FLUXES
778      - pkg/exf CPP options EXF_READ_EVAP and
779        EXF_NO_BULK_COMPUTATIONS
780      - usage examples are Experiments 8 and 9 in
781        verification/lab_sea/README
782      - verification/lab_sea default experiment now uses
783        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
784    
785    checkpoint47e_post
786    o created a tag prior to creating a branch
787    
788    checkpoint47d_post
789    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
790      at the bottom boundary had an erroneous half slip boundary condition
791    o added bottom drag and no slip boundary condition capabilities to
792      oceanic pressure coordinates code
793    o added new verification experiment global_ocean_pressure, this experiment is
794      also described in the tutorial section of the manual
795    checkpoint47d_pre
796    
797    checkpoint47c_post
798    o Added a verification experiment for a global cubed-sphere ocean run
799      -  verification/global_ocean.cubed32x32x30
800      -  uses pkg/therm_seaice and pkg/bulk_forcing
801    
802    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
803    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
804      when using P-coordinate; only implemented for atmospheric config.
805    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
806      NOTES: requires option NONLIN_FRSURF to be "#define".
807    o update advect_xz/results/output.txt (left from checkpoint44g_post)
808    
809    checkpoint47b_post
810    Merging from release1_p9:
811    o pkg/seaice
812      - removed GOTO's and added taf directives
813      - double precision constants to reduce the g77 (Linux)
814        to F77 (SGI) differences reported in release1_p8
815    o tools/genmake
816      - added SGI options
817    o verification/testscript
818      - updated to that of checkpoint47a_post
819    o verification/global_ocean.90x40x15/input/eedata
820      - modified for SGI f77 compatibility
821    o verification/lab_sea
822      - added description of sea-ice model
823      - added missing matlab routines
824      - added test of thermodynamics parallelization
825    
826    checkpoint47a_post
827    o new pkg: aim_v23
828     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
829       for now, keep the same surface forcing as before.
830     - Part-Cell implemented into AIM; check that Heat & Water are conserved
831     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
832     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
833    o add diagnostic of surface correction term in monitor output
834    
835    o bulk_force and therm_seaice
836    - Two packages:  bulk_force (Bulk forcing)
837      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
838    - Earlier integration from Stephaine Dutkiewicz
839      and Patrick Heimbach.
840    - Two ifdef statements for compile time,
841       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
842    
843    checkpoint47
844    differentiable version of checkpoint46n_post
845    o bug fix in quasihydrostaticterms
846    o * "clean" adjoint code (in terms of extensive recomputations)
847        can now be obtained for all GMREDI options (i.e. for
848        - GM_VISBECK_VARIABLE_K
849        - GM_NON_UNITY_DIAGONAL
850        - GM_EXTRA_DIAGONAL
851        - GM_BOLUS_ADVEC )
852      * However, wrong gradient check problem remains unsolved.
853      * New CPP options have been introduced for different
854        tapering schemes
855    o external_fields_load now part of differentiation list
856    o pressure needs multiple storing;
857      would be nice to have store_pressure at beginning or
858      end of forward_step, e.g. by having phiHyd global (5-dim.)
859      (NB: pressure is needed for certain cases in find_rho,
860      which is also invoked through convective_adjustment).
861    o recomputations in find_rho for cases
862     'JMD95'/'UNESCO' or 'MDJWF' are OK.
863    o #define ATMOSPHERIC_LOADING should be differentiable
864    o ini_forcing shifted to begining of initialise_varia
865    o Incorporating QNVS line search routines into MITgcm
866      (this is separate code, and therefore not under pkg)
867      lsopt/, optim/
868    o Updated verification/carbon/
869      - #define GM_VISBECK_VARIABLE_K
870      - GM_taper_scheme    = 'ldd97'    
871    
872    checkpoint46n_post
873    Merging from release1_p8:
874    o verification/natl_box:
875      updating new external_fields_load routine
876    o New package: pkg/seaice
877      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
878      The sea-ice code is based on Hibler (1979-1980).
879      Two sea-ice dynamic solvers, ADI and LSR, are included.
880      In addition to computing prognostic sea-ice variables and diagnosing
881      the forcing/external data fields that drive the ocean model,
882      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
883      The implied surface heat flux is then stored in variable
884      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
885      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
886      non-local transport term.  Because this call precedes model
887      thermodynamics, temperature under sea-ice may not be "exactly" at
888      the freezing point by the time theta is dumped or time-averaged.
889      N.B.: fairly large differences in accuracy occur across
890            different platforms/compilers; comparison between
891            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
892            generated output gives:
893       T           S           U           V
894      C D M    c        m  s        m  s        m  s        m  s
895      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
896      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
897      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
898    
899      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
900    o GAD:
901      - generated new common blocks to account for call of
902        same gad routines with differing traceridentities
903        (needed to modify tracerIdentity indices in GAD.h)
904      - generated separate common blocks for case useCubedSphereExchange
905        (Department of Futurology)
906      - parameter lists to gmredi_?transport: added tracerIdentity
907      - added new key indices to tamc.h
908    o external_fields_load:
909      - added this routine to TAF list
910      - needed to make some common blocks global and additional storing
911        along the same lines as exf package (checkpoint_lev?_directives.h)
912    o exf:
913      updated external forcing package
914      - bug fixes carried over from ecco-branch
915        (missing OBCS_OPTIONS.h in two routines)
916      - enable easy to use "no forcing".
917      - added exf I/O for atmospheric loading
918      - added exf I/O for runoff data
919      - transfered scaling between exf <-> MITgcm to exf namelist
920    o Adding new verification experiment global_with_exf.
921      This verification experiment is almost identical to the
922      global_ocean.90x40x15 experiment, except that it uses
923      the exf (and cal) package instead of the
924      external_fields_load routine (cf README file).
925    
926    checkpoint46m_post
927    o modified testscript to return -- when there are no lines of "%MON" output
928    o added new flag "quasiHydrostatic" for QH mode
929      and new routine quasihydrostaticterms()
930    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
931      New routine: mom_u_coriolis_nh()
932    o fixed sign of non-hydrostatic metric terms in u and v equations.
933      Depend on correct sign of gravitySign.
934    o added work.pc* to .cvsignore in aim directories using ifc
935    o introduced flag for controllin non-hydrostatic metric terms
936    o removed gravitySign from PARM04
937    o switched to g77/ifc from pgf77 in aim experiments
938    
939    checkpoint46l_post
940    o made convective adjustment work with pressure coordinates:
941     - changed the direction of k-loop in convective_adjustment.F for the
942       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
943     - adjusted the reference pressure k-index in convective_adjustment.F
944     - adjusted the convection condition in convect.F (in analogy to
945       calc_ivdc.F)
946     - convective_adjustment no longer computes anything on the halos
947     - removed the warnings about negative salinity from find_rho.F and
948       find_alpha.F; instead the new routine look_for_neg_salinity, called
949       at the beginning of find_rho, find_alpha, and find_beta, does a
950       check of the entire slice, if CPP-option
951       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
952    checkpoint46l_pre
953    
954    checkpoint46k_post
955    o fixed the verification/global_ocean.90x40x15 experiment:
956     - new bathymetry (the world according to A., JMC, and M.)
957     - new initial fields and forcing fields (*.bin files)
958     - new POLY3.COEFFS (for the next release one should switch to a full
959       equation of state: JMD95P or MDJWF)
960     - fixed several errors and redundancies in the data file
961     - experiment uses looped cells
962     - added matlab directory with diagnostic scripts for plotting of output
963    
964    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
965     - read AIM physics parameters from a file (data.aimphys)
966     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
967    
968    checkpoint46j_post
969    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
970    o move wVel computation at the end of the time step, in S/R integr_continuity
971    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
972    o update timeave pkg for wVel diagnostic.
973    checkpoint46j_pre
974    
975    checkpoint46i_post
976    o Clean up AIM package (and keep the results unchanged):
977      include CPP_OPTION and use IMPLICT NONE in all routines ;
978      declare all the variables _RL ; use _d 0 for all numerical constants.
979      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
980    
981    checkpoint46h_post
982    o cleaned up the use of rhoNil and rhoConst.
983      - rhoNil should only appear in the LINEAR equation of state, everywhere
984        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
985        and the dynamical equations are all divided by rhoConst
986    o introduced new parameter rhoConstFresh, a reference density of fresh
987      water, to remove the fresh water flux's dependence on rhoNil. The default
988      value is 999.8 kg/m^3
989    o cleanup up external_forcing.F and external_forcing_surf.F
990      - can now be used by both OCEANIC and OCEANICP
991    checkpoint46h_pre
992    
993     Added code to convert surface volume flux (fresh water) into
994     a mass flux when using P coordinates in the ocean (OCEANICP).
995     Note: It assumes you have set rho0=rhoConst=density of fresh water.
996    
997    checkpoint46g_post
998    o Include a new diagnostic variable phiHydLow for the ocean model
999      - in z-coordinates, it is the bottom pressure anomaly
1000      - in p-coordinates, it is the sea surface elevation
1001      - in both cases, these variable have global drift, reflecting the mass
1002        drift in z-coordinates and the volume drift in p-coordinates
1003      - included time averaging for phiHydLow, be aware of the drift!
1004    o depth-dependent computation of Bo_surf for pressure coordinates
1005      in the ocean (buoyancyRelation='OCEANICP')
1006      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
1007        Theta, Salinity, and Pressure in the parameter list. This routine is
1008        presently contained in find_rho.F. This routine does not give the
1009        correct density for 'POLY3', which would be a z-dependent reference
1010        density.
1011    o cleaned up find_rho
1012      - removed obsolete 'eqn' from the parameter list.
1013    o added two new verification experiments: gop and goz
1014      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
1015    checkpoint46g_pre
1016    
1017    checkpoint46f_post
1018    o Enable tangent linear (forward mode) gradient checks:
1019      - extended active file handling to g_... files
1020      - added TANGENT_SIMULATION to theSimulationMode
1021      - extended grdchk package accordingly
1022    o added tangent linear setup in verification/carbon/code_ftl
1023    o added adjoint setup in verification/front_relax/code_ad
1024    
1025    checkpoint46e_post
1026    o Added new equation of state -> MDJWF
1027      - EOS of McDougall et al., 2002, JAOT, submitted
1028      - caveat: the equation of state is only valid for a smaller (more
1029        realistic?) range of values than JMD95P/Z and UNESCO
1030      - added masks to the calculation of pressure in store_pressure
1031      - added more check values for density in check_eos (ini_eos.F), some of
1032        the old check values are out of the range of the MDJWF-eos, so don't
1033        expect perfect matches for those
1034    checkpoint46e_pre
1035    
1036    checkpoint46d_post
1037    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
1038      'OCEANICP', also initialised field pressure correctly in ini_eos in the
1039      case of pressure coordinates. eosType='JMD95Z' in
1040      combination with buoyancyRelation='OCEANICP' now causes an error.
1041    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
1042      in find_alpha/beta.
1043    checkpoint46d_pre
1044    
1045    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
1046      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
1047    
1048    checkpoint46c_post
1049    o Changes necessary for ocean in p-coordinates
1050     -  Added new buoyancy relation = 'OCEANICP'
1051     -  Added new parameters = gravitySign (this used to be contained inside
1052        the factor dRdZ which I added when we first switched to R coordinates).
1053     X GM/Redi is not compatible (yet)
1054     X bottom drag and no-slip need to be debugged.
1055    checkpoint46c_pre
1056    
1057    checkpoint46b_post
1058    o Added new equation of state -> JMD95Z and JMD95P
1059      - EOS of Jackett and McDougall, 1995, JAOT
1060      - moved all EOS parameters into EOS.h
1061      - new routines ini_eos.F, store_pressure.F
1062    o Added UNESCO EOS, but not recommended because it requires
1063      in-situ temperature (see JMD95)
1064    o Modified formatting for knudsen2.f in utils/knudsen2 and added
1065      unesco.f to be used with POLY3
1066    checkpoint46b_pre
1067    
1068    checkpoint46a_post
1069    o Added (atmospheric) pressure loading
1070      - new field in FFIELDS.h, etc...
1071      - new cpp flag ATMOSPHERIC_LOADING
1072    o Changed hFacC to _hFacC in calc_phi_hyd.F
1073    o Added SHORTWAVE_HEATING to some files for consistency
1074    checkpoint46a_pre
1075    
1076    checkpoint46
1077    further merges from release1_p5
1078    o new ctrl package
1079      - adopted from ECCO environment to enable optimization
1080      - added Eliassen Palm fluxes to controls
1081    o added Eliassen Palm flux controls to gradient check package
1082    o cost package
1083      - Compatible with new ctrl package
1084      - added Eliassen Palm cost hooks
1085      - modif's of existing cost functions
1086    o Adjoint-related bug fixes in kpp:
1087      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
1088      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
1089    o autodiff package
1090      - flow directives:
1091        + new for S/R do_the_model_io
1092        + enhanced for S/R checkpoint
1093        + new gmredi.flow
1094      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
1095        disable adcommon.h/g_common.h by default.
1096      - fixed problem for adjoint of global_max
1097    o modified verification/carbon/
1098    o New setup for adjoint of global_ocean
1099    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
1100    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
1101    o incorporated hooks for sponge layer code (external_forcing.F)
1102    
1103    checkpoint45d_post
1104    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
1105    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
1106      (affects plume_on_slope "cg2d" output)
1107    o add new parameter deltaTfreesurf for free-surface time stepping
1108    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
1109    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
1110    o change phiMin in exp1 (to agree with documentation)
1111    o add new flags:
1112     - T,S forcing inside/outside Adams-Bashforth
1113     - turn off temp,salt advection and/or forcing
1114     - for each tracer, define internal flag for multiDimAdvection & A-B
1115    o monitor: change definition of KE to check conservation of Energy
1116    
1117    checkpoint45c_post
1118    o Removed f90 comments ("!")
1119    o Modified initialisations to enable exf package for MITgcm
1120      (without invoking ECCO_PACKAGE).
1121    o modifications to gradient check package (Martin Losch)
1122      - enable centered differences
1123      - modified format of standard output
1124    
1125    checkpoint45b_post
1126    o cleaned exchange calls in cg2d
1127    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
1128    o included CPP option SINGLE_LAYER_MODE in thermodynamics
1129      to configure barotropic setup (Martin Losch)
1130    o moved some initialisations within bi,bj loop in dynamics
1131      (TAF flow dependency)
1132    o in initialise_varia, moved call packages_init_variables
1133      before convective_adjustment_init
1134      (corresponding adjustment of TAF tape initialisation).
1135    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
1136    
1137    checkpoint45a_post
1138    o compute Rho over the whole domain (extend iMin,jMin indices)
1139    o specific exchange for X-slice domain (case Ny=1)
1140    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
1141    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
1142    
1143  checkpoint44h_post = checkpoint45  checkpoint44h_post = checkpoint45
1144  o Fix to restore differentiability:  o Fix to restore differentiability:

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