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revision 1.75 by jmc, Thu Jun 20 23:52:03 2002 UTC revision 1.314 by jmc, Sat Jun 26 02:41:46 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 new parameter "nShapS": allow to treat differently S from T (nShapT)
7    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
8    
9    checkpoint53f_post
10    o modifications that affect AIM experiment results (update output.txt):
11      - no advection of S at top interface Nr (pkg/generic_advdiff)
12      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
13    o AIM pkg:
14      - include stability function into surf.Flux derivative relative to Tsurf
15      - calculate clear-sky radiation & surface temp. change (for diagnostics)
16    
17    checkpoint53e_post
18    o merged cylindrical coord configuration
19    o added rotating_tank experiment
20    checkpoint53e_pre
21    
22    checkpoint53d_post
23    o faulks upgraded: re-generate output.txt that have changed:
24       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
25    o Added Bryan and Lewis, 1979, vertical diffusivity profile
26    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
27    o added Sadourny discretization of Coriolis
28      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
29      - re-enabled use of omega3 (useAbsVorticity)
30    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
31      vector-invariant equations
32      - note: does *NOT* yet use same variable visc. for no-slip BC's.
33    o recoded the lateral boundary conditions for non-hydrostatic w, this time
34      hopefully without new bugs
35      - still to do: biharmonic friction for non-hydrostatic w
36    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
37    o regenerated output for global_ocean_ebm (using -ieee)
38    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
39      of mom_common/
40      - simple re-arrangement of instructions within computing loop
41    checkpoint53d_pre
42    
43    checkpoint53c_post
44    o new version of coupler for AIM+thSIce and Ocean models
45     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
46     - land: change Evaporation of snow
47     - aim with thSIce: fix bug in snow-precip.
48    o changes to calc_gw.F
49     - bug fix for w^2 term near the bottom boundary
50     - (hopefully) improve the lateral slip boundary condtions for use with
51        partial/looped cells
52      - because the bug fix changes two verification experiments anyway (exp5
53        and plume on slope), change the lateral boundary condition from half slip
54        to the value of no_slip_sides
55    o ebm package wasnt quite up to the parallel task. Fixed that.
56    o Adjoint of EBM package + verification
57      * TLM OK
58      * ADM not sufficient accuracy yet (needs further testing)
59    
60    checkpoint53b_post
61    o Commiting new energy balance model to repository
62      * package is pkg/ebm
63      * verif. is verification/global_ocean_ebm
64      * references are in ebm_driver.F
65    C      * X. Wang, P. Stone and J. Marotzke, 1999:
66    C        Global thermohaline circulation. Part I:
67    C        Sensitivity to atmospheric moisture transport.
68    C        J. Climate 12(1), 71-82
69    C      * X. Wang, P. Stone and J. Marotzke, 1999:
70    C        Global thermohaline circulation. Part II:
71    C        Sensitivity with interactive transport.
72    C        J. Climate 12(1), 83-91
73    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
74    C        Destabilization of the thermohaline circulation
75    C        by atmospheric eddy transports.
76    C        J. Climate 7(12), 1870-1882
77    o Will need long integration testing.
78    checkpoint53b_pre
79    
80    o created pkg/mom_common in preparation for variable viscosity code
81    o renamed and split ini_mnc_io
82    o pkg/land: only liquid water can diffuse or run-off
83    o AIM using land: soil wetness availability account for snow
84    o added printMapIncludesZeros to EEPARMS namelist
85    
86    checkpoint53a_post
87    o restore TAMC compatiility for exf_constants.h
88      (no usage of _d in .h)
89    o Additional storing in KPP in an attempt to fix
90      TAMC problem with adjoint of KPP code.
91      (no success...)
92      Identical code works fine with TAF.
93    o Fixed verification/natl_box_adjoint experiments.
94      Initial conditions for Experiments 4 and 5 are now
95      set to "SEAICE_initialHEFF=0", which is more reasonable,
96      and hence gives results closer to that of Experiment 2.
97      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
98    
99    checkpoint53
100    o stable checkpoint with up to date adjoint
101      TLM tests only run for 1st grdchk at the moment. Its unclear if
102      this is a code problem or a problem with resetting code for g_
103      variables that is being autogenerated wrong.
104      Otherwise:
105       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
106       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
107         are both still in chaos following their security messes.
108    
109    checkpoint52n_post
110    o various build (mostly genmake2) changes including:
111      - ability to build/run more easily within Cygwin and MacOS X
112      - more complicated Makefiles with a stronger dependence on Gnu Make
113    o pkg/seaice modifications
114      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
115        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
116        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
117      - changed proxy for geostrophic velocity and updated
118        verification/lab_sea/results/* accordingly
119      - removed ADI dynamic solver from pkg/seaice
120      - replaced all occurrences of 1/CSTICE or 1/CSUICE
121        they caused a segmentation fault under certain circumstances
122      - removed unused field WATR
123    o bug fix in exf-package:
124      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
125         now reflect that.
126    o small fixes in the cal-package:
127      - set reference date to first of January for the 'model'-calendar
128      - failing of cal_CheckDate in cal_FullDate now actually results in a
129        warning
130    o small modifications in exf-package to increase flexibility:
131      - change climtempfreeze from a constant to a runtime parameter that
132        is specified in data.exf_clim (default = -1.9)
133      - introduce runtime parameter windstressmax (default = 2.0) that is
134        specified in data.exf
135    o fix in pkg/thsice:
136      - update Evap (Tsf changes) to be consistent with Latent heat flux
137      - maintain snow precipitation unchanged (even if Tsf >=0).
138     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
139    
140    checkpoint52m_post
141    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
142      this does not change any of the results, because myIter=0 in swfrac always
143      lead to jwtype=2 (the default anyway), but the call makes little sense
144      as a default
145    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
146    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
147      atmospheric model (AIM) to use it ; add a "slab ocean" component.
148    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
149    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
150    o extending useSingleCpuIO option to work with new exch2 I/O format
151      - old-style, missing-tile I/O is still accessible by defining CPP
152        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
153    o monitor package can write to NetCDF files and/or STDOUT
154    o fix re-definition bug in MNC_GRID_INIT_ALL()
155    o doc/api_reference added
156      - a framework for building an API Reference Manual using all
157        the "protex" comments embedded in the code
158      - see pkg/generic_advdiff, pkg/mnc for examples
159    o MNC:
160      - make myThid the last argument for all subroutines
161      - new default for the grid files: NO halos
162      - add useMNC and other run-time flags
163      - separate per-file-group handling of the unlimited dimension
164      - early initialization of MNC w/ flags read at the eeboot stage
165        and lookup tables set in initialize_fixed
166      - write all MNC output to a freshly-created directory
167    o thermodynamics sea-ice (thsice) is now tested with testreport.
168    o test exp. advect_cs: use the standard cs32 grid ; update output.
169    o Added functionality to grdchk:
170      pick global i,j,k position (or nearest wet) where to perform check.
171    
172    checkpoint52l_post
173    o new land formulation:
174      a) use ground enthalpy as prognostic variable to ensure exact
175         energy conservation.
176      b) account for water temperature and for latent heat of freezing
177         in all processes (rain, run-off, ground storage)
178      c) compute surface and ground temperature implicitly.
179    o aim_v23 modification for new land model:
180      a) Treat separately land / ocean / sea-ice surface fluxes
181         to allow implicit computation of land & sea-ice surface temp.
182      b) add snow precipitation.
183    checkpoint52l_pre
184    
185    o fix problem (when 1 tile is empty) in min/max monitor.
186    o fix bug in timeAve (u,vZetatave in common block)
187    o no restoring terms under ice for pkg/seaice
188    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
189    o bug fix for pkg/seaice pickups
190    o change MNC call locations and add coordinate attributes
191    o mask vorticity at the corner ; affects global_ocean.cs output
192    o fix ini_curvilinear_grid ; test CS experiments with mpi
193    o aim.5l_cs: modify sea-ice fraction input file ; update output
194    o exf: Adding simple range check routine for exf fields after read
195    
196    checkpoint52k_post
197    o removed top-level directory "diags"
198      - we migrated these functions to pkg/timeave a long time ago
199    o fixed bug introduced in pkg/monitor
200    o accuracy ctrlprec = 32 insuffient for gradient checks using
201      averaged fields (I/O via cost_averages)
202      -> use ctrl.h in active_file*.F to control I/O precision.
203    o paramter list of CALL ADTHE_MAIN_LOOP
204    o added initial do_the_model_io to ecco
205    o set all ...Freq to zero after cost_final
206      taveFreq, dumpFreq, pChkptFreq
207    o MAIN and ECCO differentiability restored
208    
209    checkpoint52j_post
210    o fix nchklev in tamc.h for global_ocean...
211    o Bringing flow and store directives up-to-date
212    o Really weird thing!
213      call do_the_model_io from the_main_loop with parameters
214      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
215      TAF places a faulty re-call of initialise_varia
216      after cost_final call which should not be there!
217    checkpoint52j_pre
218    
219    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
220      error messages
221    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
222    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
223      debug output
224    o modfied mdsio_writefield.F to handle non-global files under exch2
225    o update AIM Cubed-Sphere exp (aim.5l_cs):
226      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
227    o update AIM Equatorial Channel exp:
228      use standard aim_v23 pkg and change the SST fields to be more realistic.
229    o globalFile now works with exch2
230    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
231      mon_vort3.F to make exch2 friendly with >1 tile per cube face
232    o limit timeave output for hi-res integrations
233    
234    checkpoint52i_post
235    o removed CPP_EEOPTIONS.h from verification/*/code
236    o updated the tiling for global_ocean_pressure
237    checkpoint52i_pre
238    
239    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
240      the old pkg/aim).
241    
242    checkpoint52h_pre
243    o shortened offending lines in exch2_send_rx?.template
244    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
245    o genmake2: add build & execute test for NetCDF code
246    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
247      old grid files, moved CPP_EEMACROS.h to pkg/exch2
248    o added useSingleCPUIO flag to monitor.F and mon_out.F
249    o added temporary hack for sea-ice dynamics on the cube:
250      metric terms are ignored and it is assumed that
251      there is no sea-ice on cube faces 1, 2, 4, and 5.
252    
253    checkpoint52f_post
254    o added exch2 cube routines to pkg/exch2
255    o modified hs94.cs-32x32x5 to use it
256    o added new grid files to hs94.cs-32x32x5
257    checkpoint52f_pre
258    
259    checkpoint52e_post
260    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
261      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
262    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
263      to work with implicit vertical advection and AB ;
264    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
265    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
266     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
267    checkpoint52e_pre
268    
269    o fix bug in impldiff when Nr=1 or Nr=2.
270    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
271    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
272    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
273      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
274    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
275    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
276    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
277    
278    checkpoint52d_post
279    o re-tiled many expts to allow comparison in multi-processor mode
280      - updated output accordingly
281      - changed hs94.128x64x5 to use intial T from file rather than use the
282        random number generator
283    o add infrastructure in model routines for fizhi and gridalt packages
284    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
285    o changes to permit hi-res, cubed-sphere, configuration
286      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
287      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
288      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
289        of surface winds for the cube
290      (A verification experiment, based on global_ocean.cs32x15, but with
291       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
292       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
293       complete with example surface forcing files and matlab scripts to look
294       at the output and compare it with that of global_ocean.cs32x15.)
295    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
296       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
297       to conform to the common rule.
298    o check-in the first version of the coupler + interfaces for multi-components
299       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
300       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
301       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
302       - ocean and atmos. share the same horizontal grid (no interpolation).
303       - exchanges between component and coupler is done in forward_step
304    o new verification experiment, cpl_aim+ocn:
305       coupled ocean - AIM atmosphere on cs32 grid.
306    
307    checkpoint52d_pre
308    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
309    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
310    
311    checkpoint52c_post
312    o Fixing OPTIONS files for use of exf:
313      - ALLOW_ECCO not needed
314      - ECCO_CPPOPTIONS.h should not be included from
315        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
316        as has been the case in the past
317      - All cal/exf related options are currently set in
318        single header file. Should remain so until we
319        agree on a consistent new policy.
320    o Removed all CPP options for cal package.
321      cal has no more CPP options.
322    o modified STOREs in GAD_ADVECTION
323    o corrected key comp. for passkey
324    
325    checkpoint52b_post
326    o new version: "thsice" of thermodynamic sea-ice pkg:
327     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
328     - modify fluxes but do not change theta directly;
329     - light cleaning of bulk_force pkg (still needed with thsice).
330     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
331       + output_thsice.txt to test thsice & bulk_force pkgs.
332    o put back grid & coriolis monitor output.
333    checkpoint52b_pre
334    
335    o call "do_the_model_io" at the beginning (=> dump initial state)
336    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
337    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
338      (need info on NUMBER_OF_PTRACERS)
339    o missing PTRACERS headers in some routines
340    o default tamc.h in pkg/autodiff supposed to crash
341      to ensure proper customization
342    
343    checkpoint52a_post
344    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
345      - moved surfaceTendencyTice from pkg/seaice to main code
346      - subroutine FREEZE_SURFACE now limits only surface temperature
347        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
348        => new output.txt for global_ocean.cs32x15 & global_with_exf
349      - keep the old version of FREEZE for backward compatibility;
350        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
351      - corresponding modifs for TAF directives
352    o added surface flux output variables to TIMEAVE_STATVARS
353    o time-averaged output for pkg/ptracers
354    o fix problem with ECCO-related divided adjoint
355      snapshot file was missing some ad-variables,
356      but no warning issued by TAF
357    
358    checkpoint52a_pre
359    o some bug fixes for #undef REAL4_IS_SLOW
360    
361    checkpoint52 = ecco_c52_e35
362    o after testing adjoints of checkpoint51u_post
363    
364    checkpoint51u_post
365    o this is the post-merge tag of the ecco-branch
366      (needs another clean checkout and re-testing)
367    o various natl_box_adjoint configs and results
368      but no input fields
369    o obcs adjoint not yet merged!
370    o adding ECCO global 1x1 and 2x2 degree configs
371    o updated/extended some store directives for seaice
372    o pkg/ecco now containes ecco-specific part of cost function
373    o top level routines the_main_loop, forward_step
374      supersede those in model/src/
375      previous input data.cost now in data.ecco
376      (new namelist ecco_cost_nml)
377    o in ctrl/ cleaned some cross-dependencies and updated CPP options
378    
379    checkpoint51t_post
380    o this is the pre-merge tag of the ecco-branch
381    
382    checkpoint51s_post
383    o cleanup: removed various obsolete #define-s
384    o pkg/grdchk
385      - renamed 'ph-grd 3' to 'grad-res'
386      - merged from ecco-branch
387        (remaining bug fixes for obcs gradient checks)
388      - additional high-precision output for testreport
389        (grep for 'precision_grdchk_result')
390    
391    checkpoint51r_post
392    o cleaned up or removed CPP_OPTIONS.h files
393    o updated results for some of the tests to reflect the new
394      optfiles (-ieee: -O0 instead of -O3)
395    
396    checkpoint51q_post
397    o cd_code:
398      - moved cd_scheme.F -> cd_code_scheme.F
399      - separate read_checkpoint from cd_code_ini_vars.F
400      - separated cd_code part from write_checkpoint
401      - updated AD_SOURCE, generated .flow
402      - added CD_CODE_VARS.h to the_main_loop
403      - Moving cd_code specific store dir.s to pkg/cd_code
404    o ctrl package totally restructured
405      - pack/unpack now optional and decoupled from
406        xx_/adxx_ I/O
407      - ctrl_pack/unpack cleaned
408        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
409      - confined inclusion of AD_CONFIG.h to where necessary.
410    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
411    
412    checkpoint51p_post
413    o create initial cd_code package
414      - WARNING: the initialization of fields within packages
415        is broken because INI_FIELDS (where READ_CHECKPOINT is
416        called) is called *before* PACKAGES_INIT_VARIABLES.
417        This seems to be backwards since
418        1) its important to initially zero the entire field including
419           the "halo" region
420        2) zeroing needs to be done *before* reading pickup info
421           and the pickup call might or might not happen in any
422           particular run
423      - this needs an overhaul for R2
424    o cleanup verification/*/code/GMREDI_OPTIONS.h
425    o cleanup testreport
426    
427    checkpoint51o_post
428    o bringing AD-related verif's up to date with genmake2
429      - carbon/
430      - global_ocean.90x40x15/
431      - hs.94.1x64x5/
432      - (front_relax/ )
433    o (more) consistent directory structure for AD-related verif.'s
434    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
435    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
436    o bug fix in find_alpha.F for MDJWF:
437      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
438        change rho -> rho-rhoConst
439      - replace call find_rho to find_rhonum
440    o initialisation of rFlx extended to full array (required by TAF)
441      and shifted to thermodynamics
442    o removed PTRACERS.h in ptracers routine
443    o added surfacetendencyPtr to S/R parameter list pracers_forcing
444    o Correcting initialisations for fVerU, fVerV.
445    o helping TAF to recognize dependency on kUp for
446      fVerU, fVerV
447    o Replacing delZ by delR in pkg/ctrl/
448    checkpoint51o_pre
449    
450    o undid all of cp51 pending some cleanups and discussion
451    o added the [#include "AD_CONFIG.h"] statement to all files that need
452       it for adjoint/tl #defines
453     o re-worked the build logic in genmake2 to support AD_CONFIG.h
454     o removed tools/genmake since it no longer works
455    
456    checkpoint51n_post
457    o modifications to make FREEZE flux visible to pkg/kpp
458      - moved surfaceTendencyTice from pkg/seaice to main code
459      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
460      - subroutine FREEZE now limits only surface temperature
461        (this means new output.txt for global_ocean.90x40x15,
462         global_ocean.cs32x15, and global_with_exf)
463    o added surface flux output variables to TIMEAVE_STATVARS
464    
465    checkpoint51n_pre
466    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
467    o added [#include "AD_CONFIG.h"] to all files that use the following
468      defines:
469      - ALLOW_ADJOINT_RUN
470      - ALLOW_TANGENTLINEAR_RUN
471      - ALLOW_ECCO_OPTIMIZATION
472    
473    checkpoint51m_post
474    o incorporating changes to get TAMC/TAF working in genmake2
475      - added new TAMC/TAF targets to the Makefile
476      - various cleanups related to package handling
477      - these changes should have no impact on the forward model
478    
479    checkpoint51l_post
480    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
481     - faster algorithm for cal_addtime.F
482     - higher precision arithmetic, where needed
483     - pkg/exf *startdate variables changed from calendar date to
484       model integration time
485    
486    checkpoint51l_pre
487    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
488    o enable to apply restoring on S & T only in a latitude band.
489    o update output (external_forcing_surf modif. change truncation errors)
490       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
491    
492    checkpoint51k_post
493    o change default to: useNHMTerms=.FALSE.
494     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
495       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
496     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
497        exp1, ideal_2D_oce
498     - change data file of oceanic exp (leave the results unchanged for now)
499       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
500    o set gravitySign automatically according to the vertical coordinate used
501      (and change sign: back to "logical" value: +1 when R increases downward)
502    o added an include barrier to the default CPP_OPTIONS.h and
503      removed the #include "PACKAGES_CONFIG.h" from it
504    o fix a bug in mom_fluxform (from chk51j_post)
505    
506    checkpoint51j_post
507    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
508    o adjusted some flow directives (dynamics, thermodynamics)
509    o added cubed-sphere case to test cost function
510    o heckpoint_lev?_directives.h now include
511      pkg-specific directives, whenever those are enabled.
512    o Moving pkg-specific flow directives to corresponding pkg
513      Moving pkg-specific differentiation list to corresponding pkg
514      Moving pkg-specific checkpoint-lev storing to corresponding pkg
515      ---> conventions are
516           - pkg_ad.flow
517           - pkg_ad_diff.list
518           - pkg_ad_check_lev?_dir.h
519    
520    checkpoint51i_post
521    o merge of the branch-genmake2
522      - knowingly breaks the older genmake
523      - automatic generation of all ALLOW_${PKG_NAME} defines
524      - new testreport supersedes older testscript
525    o large number of package inclusion and header cleanups
526    checkpoint51i_pre
527    
528    o new output for adjoin of global ocean vector invariant
529    o fix for checkpoint of thermodynamic seaice and bulk_force
530    o Steph gchem various cleanups
531    
532    checkpoint 51h_pre
533    o fixed some single quotes
534    o modify gchem pkg to be more versatile
535    o modifications to clean up dic pkg
536    o add pkg/cfc
537    
538    checkpoint51g_post
539    o provide links for ARPACK and ADM*TLM
540    o start removing verification/vero/
541    o update AD-related stuff
542      (in particular some IF-statements in model/src/ routines)
543    o adding to verification/global_ocean.90x40x15/ adjoint of
544      vector invariant setup
545    
546    checkpoint51f_post
547    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
548    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
549      of tracer Green's fucntions for ocean inversion project.
550    
551    checkpoint51f_pre
552    o Added on-the-fly spatial interpolation capability
553        "USE_EXF_INTERPOLATION" to pkg/exf.
554      - This is a temporary Cartesian-grid hack until
555        the super-duper ESMF coupler becomes available.
556      - See verification/global_with_exf/README for usage example.
557      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
558        flags and modified pkg/seaice accordingly.
559    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
560        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
561        non-local transport term.
562    
563    checkpoint51e_post
564    o pkg/mom_vecinv:
565      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
566      - add time-ave diagnostic of vorticity advection.
567    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
568    o atmospheric geopotential: - include water vapor effect;
569                                - use p^kappa in p* scaling.
570    o land pkg: read initial state from files.
571    o AIM : add stratospheric drag in the upper level
572    
573    checkpoint51d_post
574    o change function ILNBLNK (=> last non-blank char.) to return zero
575      (instead of the string length) when the string. char is empty
576    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
577    o modif's to restore TAMC compatibility
578      - avoid "_d" constructs in PARAMETER declarations
579      - avoid interrupting lines by comment lines
580    o Use cluster local disks for purely local I/O
581      vs. globally visible disks needed for ctrl stuff
582      (merged from ecco-branch)
583      - new active_file_loc... and mdsio_..._loc routines
584      - affected packages: autodiff, ctrl, grdchk, mdsio
585    
586    checkpoint51c_post
587    o introducing integer flag debugLevel
588      - debLevZero: suppress all output
589      - debLevA: standard
590      - debLevB: equivalent to current debugMode=.TRUE.
591    o introducing pathname variable mdsioLocalDir for mdsio
592      that can be specified at runtime
593      (relevant for cluster I/O to local disk)
594    `
595    >>>checkpoint51b_post
596    adjoint of ptracers
597    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
598    o extended state in checkpoint_lev?, etc.
599    o alternative ctrl/cost with tr1 or ptracer
600    o new comlev1_bibj_ptracers
601    o new ptracers.flow
602    o made ptracers_forcing same as external_forcing_s
603    o added verification for adjoint with ptracers
604      - adm. grdchk fail so far
605      - tlm. grdchk OK
606      - checked tapelev/comlev recomputations: OK
607    <<<checkpoint51b_pre
608    
609    checkpoint51a_post
610    o added code for biogeochemistry package
611      - new pkgs: dic, gchem
612      - new subroutine in ptracers
613    o modify code for biogeo packages
614      - in model/src and pkg/ptracers
615    
616    checkpoint51
617    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
618      - autodiff, ctrl, exf, grdchk, seaice
619      kept separate packages
620      - cost, ecco, obcs
621    o updating verification/internal_wave, verification/lab_sea
622      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
623    
624    checkpoint50i_post
625    o Preparing next differentiable checkpoint and sync
626      of MAIN vs. ecco-branch
627      - 1st step: this one is differentiable
628      - 2nd step: next(! not this) checkpoint will have updated packages
629                  from ecco-branch)
630    
631    checkpoint50h_post
632    o new package "land": provide surface BC for AIM.
633    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
634    o AIM: use true log-P extrapolation for near surface temp (= as in
635        F.Molteni paper) ; update aim.5l_cs output.
636    o New variable in PARM03 for more flexible pickups
637    o somewhat cleaned package initialisation sequence for
638      ctrl/ cost/ ecco/ in packages_... routines
639    
640    checkpoint50g_post
641    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
642      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
643      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
644        made the default because of faster convergence than ADI
645    
646    checkpoint50f_post
647    o exf totally restructured
648      - replaced all exf_set_ routines by one generic exf_set_gen.F
649        and made sure it's still differentiable
650      - split exf_getffields.F into new exf_bulkformulae.F
651      - exf_inscal_/exf_outscal_ suffixes consistent with field names
652      - updated adjoint/makefile and relevant verif. accordingly
653    
654    checkpoint50f_pre
655     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
656          + change Evap over land. (update aim.5l_cs output)
657     o added missing .cvsignores and made uniform across expts
658     o changed configuration of tidal_basin_2d expt
659     o added pkg/debug functions for tracing code in fatal crashes
660     o tidied pkg/monitor to use MONITOR_OPTIONS.h
661     o new fn in pkg/monitor to stop model if solution grows too big
662     o removed lots of single quotes from comments
663    
664    checkpoint50e_post
665    o make KPP work with PTRACERS
666     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
667       nearly a copy of kpp_transport_s
668     - there is no analogue to SurfaceTendencyS, so I have to use
669       gPtr(of the surface layer) instead
670    o add a new platform SunFire+mpi (SunFire 15000) to genmake
671    checkpoint50e_pre
672    
673    checkpoint50d_post
674    o change kpp output from multiple-record state files to single-record state
675      files analogous to write_state.F
676    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
677      analogous to the cg2d-related output.
678    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
679      so that writing to internal file fn (with length 512) fails.
680    checkpoint50d_pre
681    
682    checkpoint50c_post
683    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
684    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
685    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
686    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
687    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
688    
689    checkpoint50c_pre
690    Merging from release1_p13:
691    o bug fix for pkg/seaice dynamic solver
692    o Added SEAICE_initialHEFF to pkg/seaice
693    
694    checkpoint50b_post
695    o store u*,v* in gU,V instead of in guNm1,gvNm1
696    o in order to put the momForcing out of the Adams-Bashforth:
697      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
698      to timestep.F
699    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
700    o re-generate output for highly sensitive test-exp:
701       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
702    
703    checkpoint50b_pre
704    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
705    o corrected CPP option mismatch in exf_Bulk... functions for case
706      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
707    
708    checkpoint50a_post
709    o Bug fix for merging between c50 and KPP.
710      ikey was passed from thermodynamics to kpp_calc via
711      common block rather than being recomputed in kpp_calc,
712      in contradiction with new key itdkey.
713      New key ikppkey created, and tamc.h headers updated.
714    
715    checkpoint50
716    - 2nd step of merge with ecco-branch:
717      merge changes in ecco-branch back into main trunk
718    - bug fix in find_alpha
719    - more storing in gmredi_calc_tensor.F, kpp_routines.F
720    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
721    - merged some sliced AD support routines
722    
723    checkpoint49
724    merged from ecco-branch:
725    o exf:
726      - Enable initialisation of forcing fields to constant
727        (runtime) values.
728      - in exf_getffields.F
729        Reduce i-/j-loop to interior domain, discarding overlaps.
730        That also fixes wrong TAF-key computations for key_1, key_2
731        with bulf formulae.
732      - exf_init.F modify #ifdef for exf_init_evap
733      - exf_getffieldrec.F, ctrl_getrec.F
734        The following INT-usages are not safe:
735          fldsecs  = int(fldsecs/fldperiod)*fldperiod
736          fldcount = int(fldsecs/fldperiod) + 1
737        and were modified.
738    o autodiff: checkpoint_lev...
739      - updated storing for bulk formulae (some arrays were missing)
740      - added state for seaice package
741      - synchronized with main branch
742    o DIVA:
743      Modif.s in
744      - the_main_loop.F
745      - the_model_main.F
746      and added cost_final_restore.F cost_final_store.F
747      o With these changes, it is possible to fully separate
748        the first forward run to compute the cost function (mdthe_main_loop)
749        and adjoint runs over individual DIVA intervals (adthe_main_loop)
750        into separate model executions.
751        This enables better tuning of DIVA to given queue sizes.
752      o Loss of cost function value in consecutive DIVA runs is
753        fixed by storing to 'costfinal' file.
754      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
755        beginning/end of adjoint integration is accounted for.
756      The current changes apply to TAF-1.4.26.
757      TAF has one remaining bug, requiring one manual change
758      (see MITgcm manual).
759    o cal: synchronized between MAIN and ecco-branch
760    
761    checkpoint48i_post
762    o Changes to restore differentiability of code w.r.t. previous tag
763      (mostly adding new routines to make list and replacing
764      pressure by totPhiHyd).
765    o Updated and merged grdchk package
766      - has both ADM and TLM checks
767      - works for single- and multi-proc.
768      - output cleaned
769      - worked successfully for parallel DIVA
770    o genmake:
771      - Adding -platform=SP4
772      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
773    o Modif. for DIVA:
774      ctrl_unpack should not be called in intermediate DIVA interval.
775      (similar thing would apply for active files such as
776      tbar, sbar, psbar, which should not be reinitialised;
777      only relevant for ecco-branch)
778    
779    checkpoint48h_post
780    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
781    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
782    o Added SEAICE_initialHEFF to pkg/seaice
783    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
784    
785    checkpoint48g_post
786    --- EOS:
787    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
788      store total Potential in totPhyHyd for diagnostics & EOS.
789    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
790    --- Pressure/geopotential gradient:
791    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
792    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
793      ( changes results of global_ocean_pressure )
794    o NLFS + z-coord.: add eta*Rho' contribution.
795    o accurate phiHyd when using interface-W at the middle between 2 centers
796     ( changes results of ideal_2D_oce )
797    o includes r* 2nd term in potential gradient.
798    
799    checkpoint48f_post
800    Merging from release1_p12:
801    o Modifications for using pkg/exf with pkg/seaice
802      - improved description of the various forcing configurations
803      - added basic radiation bulk formulae to pkg/exf
804      - units/sign fix for evap computation in exf_getffields.F
805      - updated verification/global_with_exf/results/output.txt
806    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
807      (SBO) core products, including oceanic mass, center-of-mass,
808      angular, and bottom pressure (see pkg/sbo/README.sbo).
809    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
810      to avoid negative values in shallow regions.
811      - updated verification/natl_box/results/output.txt
812      - updated verification/lab_sea/results/output.txt
813    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
814    o Added useSingleCpuIO option (see PARAMS.h).
815    o Updated useSingleCpuIO option in mdsio_writefield.F to
816      work with multi-field files, e.g., for single-file pickup.
817    o pkg/seaice:
818      - bug fix in growth.F: QNET for no shortwave case
819      - added HeffFile for specifying initial sea-ice thickness
820      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
821    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
822      kpp_transport_t.F, forward_step.F, and the_main_loop.F
823    o pkg/seaice:
824      - adjoint-friendly modifications
825      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
826    
827    checkpoint48e_post
828    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
829    o dynamics: change definition of computational domain & adapt mom_fluxform
830      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
831    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
832        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
833        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
834        global_ocean.90x40x15 global_with_exf global_ocean_pressure
835        inverted_barometer solid-body.cs-32x32x1
836      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
837    
838    checkpoint48d_post
839    o in preparation for r*:
840     a) use pre-computed gradient of hydrostatic potential:
841        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
842     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
843        => affects results of glob_oce_pressure (different truncation error)  
844      update output.txt of ideal_2D_oce & global_ocean_pressure
845    
846    checkpoint48d_pre
847    o in preparation for r*:
848      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
849      pass the 2 comp. of the grad. as arguments to momentum S/R.
850      but for the moment, only used if it does not change the results.
851    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
852    
853    checkpoint48c_post
854    Modifications in treatment of initial flux forcing controls
855    to avoid extra storing of flux fields.
856    
857    checkpoint48c_pre
858    o Added tidal_basin_2d experiment (currently 1D!)
859    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
860    
861    checkpoint48b_post
862    o r* coordinate added in #ifdef NONLIN_FRSURF block.
863     (modification to pressure gradient not yet implemented)
864    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
865      (for U & V) that are used for vertical advection of momentum.
866    
867    checkpoint48a_post
868    o In preparation for r*, use temp. array to compute vertical transport
869       in flux-form momentum pkg. => change results of few test-exp.
870      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
871                        lab_sea, natl_box & plume_on_slope
872    
873    checkpoint48
874    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
875    
876    checkpoint47j_post
877    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
878    o moved adexch from forward_step to addummy_in_stepping
879    o added exch in ctrl_map_...
880    o aveFreq.=0. at end of cost_final to avoid overwrite in
881      reverse checkpointing loop
882    o Yet more changes in gmredi:
883      * adgmredi_calc_tensor
884        avoiding all recomputation of gmredi_slope_limit
885      * adgmredi_x/y/rtransport
886        added flag for excessive storing to avoid recomp. of
887        u/v/rtans, dTdx/y/z
888        -> this is not really necessary and very memory-consuming
889      * adgmredi_slope_psi:
890        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
891      * gmredi_slope_limit
892        re-activated full calculation of taperfct for case 'ac02'
893    o updating verification/ adjoints of carbon, global_ocean.90x40x15
894    
895    checkpoint47i_post
896    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
897    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
898      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
899    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
900    o gmredi: fix few bugs.
901    
902    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
903    This will be a good checkpoint to plug into the ecco-branch.
904    o few modif.'s to get latest version adjointed
905      (mainly kick out code in ini_linear_phisurf)
906    o modif's to run adjoint with exactConserv
907    o case GM_BOLUS_ADVEC should be cleaned
908      S/R gmredi_slope_psi should be cleaned
909    o verification/carbon now has exactConserv=.TRUE.
910    
911    checkpoint47g_post
912    o time-average AIM output: becomes independent from statvars time-average
913      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
914    o After TAF bug fix:
915      Tested adjoint of gmredi package.
916      Tests were done with checkpoint47 rather than with latest
917      checkpoint47f_post since the latter is broken for the adjoint
918      verification/carbon/ contains both ADM and TLM gradient checks.
919    Here they are, before they get changed/lost/stolen.
920    Mostly modif.'s to fix numerical sensitivities.
921    Gradient checks OK for
922    - GM_taper_scheme:
923      * clipping
924      * ac02
925      * linear
926      * glw91
927      * dm95
928      * ldd97
929    - GMREDI_OPTIONS:
930      * GM_VISBECK_VARIABLE_K
931      * GM_NON_UNITY_DIAGONAL
932      * GM_EXTRA_DIAGONAL
933      * GM_BOLUS_ADVEC
934    in conjunction with data.gmredi parameters to be checked in
935    in a few minutes under verification/carbon/code/
936    
937    checkpoint47f_post
938    Merging from release1_p10:
939    o modifications for using pkg/exf with pkg/seaice
940      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
941        and SEAICE_EXTERNAL_FLUXES
942      - pkg/exf CPP options EXF_READ_EVAP and
943        EXF_NO_BULK_COMPUTATIONS
944      - usage examples are Experiments 8 and 9 in
945        verification/lab_sea/README
946      - verification/lab_sea default experiment now uses
947        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
948    
949    checkpoint47e_post
950    o created a tag prior to creating a branch
951    
952    checkpoint47d_post
953    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
954      at the bottom boundary had an erroneous half slip boundary condition
955    o added bottom drag and no slip boundary condition capabilities to
956      oceanic pressure coordinates code
957    o added new verification experiment global_ocean_pressure, this experiment is
958      also described in the tutorial section of the manual
959    checkpoint47d_pre
960    
961    checkpoint47c_post
962    o Added a verification experiment for a global cubed-sphere ocean run
963      -  verification/global_ocean.cubed32x32x30
964      -  uses pkg/therm_seaice and pkg/bulk_forcing
965    
966    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
967    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
968      when using P-coordinate; only implemented for atmospheric config.
969    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
970      NOTES: requires option NONLIN_FRSURF to be "#define".
971    o update advect_xz/results/output.txt (left from checkpoint44g_post)
972    
973    checkpoint47b_post
974    Merging from release1_p9:
975    o pkg/seaice
976      - removed GOTO's and added taf directives
977      - double precision constants to reduce the g77 (Linux)
978        to F77 (SGI) differences reported in release1_p8
979    o tools/genmake
980      - added SGI options
981    o verification/testscript
982      - updated to that of checkpoint47a_post
983    o verification/global_ocean.90x40x15/input/eedata
984      - modified for SGI f77 compatibility
985    o verification/lab_sea
986      - added description of sea-ice model
987      - added missing matlab routines
988      - added test of thermodynamics parallelization
989    
990    checkpoint47a_post
991    o new pkg: aim_v23
992     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
993       for now, keep the same surface forcing as before.
994     - Part-Cell implemented into AIM; check that Heat & Water are conserved
995     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
996     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
997    o add diagnostic of surface correction term in monitor output
998    
999    o bulk_force and therm_seaice
1000    - Two packages:  bulk_force (Bulk forcing)
1001      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
1002    - Earlier integration from Stephaine Dutkiewicz
1003      and Patrick Heimbach.
1004    - Two ifdef statements for compile time,
1005       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
1006    
1007    checkpoint47
1008    differentiable version of checkpoint46n_post
1009    o bug fix in quasihydrostaticterms
1010    o * "clean" adjoint code (in terms of extensive recomputations)
1011        can now be obtained for all GMREDI options (i.e. for
1012        - GM_VISBECK_VARIABLE_K
1013        - GM_NON_UNITY_DIAGONAL
1014        - GM_EXTRA_DIAGONAL
1015        - GM_BOLUS_ADVEC )
1016      * However, wrong gradient check problem remains unsolved.
1017      * New CPP options have been introduced for different
1018        tapering schemes
1019    o external_fields_load now part of differentiation list
1020    o pressure needs multiple storing;
1021      would be nice to have store_pressure at beginning or
1022      end of forward_step, e.g. by having phiHyd global (5-dim.)
1023      (NB: pressure is needed for certain cases in find_rho,
1024      which is also invoked through convective_adjustment).
1025    o recomputations in find_rho for cases
1026     'JMD95'/'UNESCO' or 'MDJWF' are OK.
1027    o #define ATMOSPHERIC_LOADING should be differentiable
1028    o ini_forcing shifted to begining of initialise_varia
1029    o Incorporating QNVS line search routines into MITgcm
1030      (this is separate code, and therefore not under pkg)
1031      lsopt/, optim/
1032    o Updated verification/carbon/
1033      - #define GM_VISBECK_VARIABLE_K
1034      - GM_taper_scheme    = 'ldd97'    
1035    
1036    checkpoint46n_post
1037    Merging from release1_p8:
1038    o verification/natl_box:
1039      updating new external_fields_load routine
1040    o New package: pkg/seaice
1041      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
1042      The sea-ice code is based on Hibler (1979-1980).
1043      Two sea-ice dynamic solvers, ADI and LSR, are included.
1044      In addition to computing prognostic sea-ice variables and diagnosing
1045      the forcing/external data fields that drive the ocean model,
1046      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
1047      The implied surface heat flux is then stored in variable
1048      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
1049      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
1050      non-local transport term.  Because this call precedes model
1051      thermodynamics, temperature under sea-ice may not be "exactly" at
1052      the freezing point by the time theta is dumped or time-averaged.
1053      N.B.: fairly large differences in accuracy occur across
1054            different platforms/compilers; comparison between
1055            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
1056            generated output gives:
1057       T           S           U           V
1058      C D M    c        m  s        m  s        m  s        m  s
1059      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
1060      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
1061      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
1062    
1063      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
1064    o GAD:
1065      - generated new common blocks to account for call of
1066        same gad routines with differing traceridentities
1067        (needed to modify tracerIdentity indices in GAD.h)
1068      - generated separate common blocks for case useCubedSphereExchange
1069        (Department of Futurology)
1070      - parameter lists to gmredi_?transport: added tracerIdentity
1071      - added new key indices to tamc.h
1072    o external_fields_load:
1073      - added this routine to TAF list
1074      - needed to make some common blocks global and additional storing
1075        along the same lines as exf package (checkpoint_lev?_directives.h)
1076    o exf:
1077      updated external forcing package
1078      - bug fixes carried over from ecco-branch
1079        (missing OBCS_OPTIONS.h in two routines)
1080      - enable easy to use "no forcing".
1081      - added exf I/O for atmospheric loading
1082      - added exf I/O for runoff data
1083      - transfered scaling between exf <-> MITgcm to exf namelist
1084    o Adding new verification experiment global_with_exf.
1085      This verification experiment is almost identical to the
1086      global_ocean.90x40x15 experiment, except that it uses
1087      the exf (and cal) package instead of the
1088      external_fields_load routine (cf README file).
1089    
1090    checkpoint46m_post
1091    o modified testscript to return -- when there are no lines of "%MON" output
1092    o added new flag "quasiHydrostatic" for QH mode
1093      and new routine quasihydrostaticterms()
1094    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
1095      New routine: mom_u_coriolis_nh()
1096    o fixed sign of non-hydrostatic metric terms in u and v equations.
1097      Depend on correct sign of gravitySign.
1098    o added work.pc* to .cvsignore in aim directories using ifc
1099    o introduced flag for controllin non-hydrostatic metric terms
1100    o removed gravitySign from PARM04
1101    o switched to g77/ifc from pgf77 in aim experiments
1102    
1103    checkpoint46l_post
1104    o made convective adjustment work with pressure coordinates:
1105     - changed the direction of k-loop in convective_adjustment.F for the
1106       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
1107     - adjusted the reference pressure k-index in convective_adjustment.F
1108     - adjusted the convection condition in convect.F (in analogy to
1109       calc_ivdc.F)
1110     - convective_adjustment no longer computes anything on the halos
1111     - removed the warnings about negative salinity from find_rho.F and
1112       find_alpha.F; instead the new routine look_for_neg_salinity, called
1113       at the beginning of find_rho, find_alpha, and find_beta, does a
1114       check of the entire slice, if CPP-option
1115       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
1116    checkpoint46l_pre
1117    
1118    checkpoint46k_post
1119    o fixed the verification/global_ocean.90x40x15 experiment:
1120     - new bathymetry (the world according to A., JMC, and M.)
1121     - new initial fields and forcing fields (*.bin files)
1122     - new POLY3.COEFFS (for the next release one should switch to a full
1123       equation of state: JMD95P or MDJWF)
1124     - fixed several errors and redundancies in the data file
1125     - experiment uses looped cells
1126     - added matlab directory with diagnostic scripts for plotting of output
1127    
1128    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
1129     - read AIM physics parameters from a file (data.aimphys)
1130     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
1131    
1132    checkpoint46j_post
1133    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
1134    o move wVel computation at the end of the time step, in S/R integr_continuity
1135    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
1136    o update timeave pkg for wVel diagnostic.
1137    checkpoint46j_pre
1138    
1139    checkpoint46i_post
1140    o Clean up AIM package (and keep the results unchanged):
1141      include CPP_OPTION and use IMPLICT NONE in all routines ;
1142      declare all the variables _RL ; use _d 0 for all numerical constants.
1143      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
1144    
1145    checkpoint46h_post
1146    o cleaned up the use of rhoNil and rhoConst.
1147      - rhoNil should only appear in the LINEAR equation of state, everywhere
1148        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
1149        and the dynamical equations are all divided by rhoConst
1150    o introduced new parameter rhoConstFresh, a reference density of fresh
1151      water, to remove the fresh water flux's dependence on rhoNil. The default
1152      value is 999.8 kg/m^3
1153    o cleanup up external_forcing.F and external_forcing_surf.F
1154      - can now be used by both OCEANIC and OCEANICP
1155    checkpoint46h_pre
1156    
1157     Added code to convert surface volume flux (fresh water) into
1158     a mass flux when using P coordinates in the ocean (OCEANICP).
1159     Note: It assumes you have set rho0=rhoConst=density of fresh water.
1160    
1161    checkpoint46g_post
1162    o Include a new diagnostic variable phiHydLow for the ocean model
1163      - in z-coordinates, it is the bottom pressure anomaly
1164      - in p-coordinates, it is the sea surface elevation
1165      - in both cases, these variable have global drift, reflecting the mass
1166        drift in z-coordinates and the volume drift in p-coordinates
1167      - included time averaging for phiHydLow, be aware of the drift!
1168    o depth-dependent computation of Bo_surf for pressure coordinates
1169      in the ocean (buoyancyRelation='OCEANICP')
1170      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
1171        Theta, Salinity, and Pressure in the parameter list. This routine is
1172        presently contained in find_rho.F. This routine does not give the
1173        correct density for 'POLY3', which would be a z-dependent reference
1174        density.
1175    o cleaned up find_rho
1176      - removed obsolete 'eqn' from the parameter list.
1177    o added two new verification experiments: gop and goz
1178      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
1179    checkpoint46g_pre
1180    
1181    checkpoint46f_post
1182    o Enable tangent linear (forward mode) gradient checks:
1183      - extended active file handling to g_... files
1184      - added TANGENT_SIMULATION to theSimulationMode
1185      - extended grdchk package accordingly
1186    o added tangent linear setup in verification/carbon/code_ftl
1187    o added adjoint setup in verification/front_relax/code_ad
1188    
1189    checkpoint46e_post
1190    o Added new equation of state -> MDJWF
1191      - EOS of McDougall et al., 2002, JAOT, submitted
1192      - caveat: the equation of state is only valid for a smaller (more
1193        realistic?) range of values than JMD95P/Z and UNESCO
1194      - added masks to the calculation of pressure in store_pressure
1195      - added more check values for density in check_eos (ini_eos.F), some of
1196        the old check values are out of the range of the MDJWF-eos, so don't
1197        expect perfect matches for those
1198    checkpoint46e_pre
1199    
1200    checkpoint46d_post
1201    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
1202      'OCEANICP', also initialised field pressure correctly in ini_eos in the
1203      case of pressure coordinates. eosType='JMD95Z' in
1204      combination with buoyancyRelation='OCEANICP' now causes an error.
1205    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
1206      in find_alpha/beta.
1207    checkpoint46d_pre
1208    
1209    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
1210      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
1211    
1212    checkpoint46c_post
1213    o Changes necessary for ocean in p-coordinates
1214     -  Added new buoyancy relation = 'OCEANICP'
1215     -  Added new parameters = gravitySign (this used to be contained inside
1216        the factor dRdZ which I added when we first switched to R coordinates).
1217     X GM/Redi is not compatible (yet)
1218     X bottom drag and no-slip need to be debugged.
1219    checkpoint46c_pre
1220    
1221    checkpoint46b_post
1222    o Added new equation of state -> JMD95Z and JMD95P
1223      - EOS of Jackett and McDougall, 1995, JAOT
1224      - moved all EOS parameters into EOS.h
1225      - new routines ini_eos.F, store_pressure.F
1226    o Added UNESCO EOS, but not recommended because it requires
1227      in-situ temperature (see JMD95)
1228    o Modified formatting for knudsen2.f in utils/knudsen2 and added
1229      unesco.f to be used with POLY3
1230    checkpoint46b_pre
1231    
1232    checkpoint46a_post
1233    o Added (atmospheric) pressure loading
1234      - new field in FFIELDS.h, etc...
1235      - new cpp flag ATMOSPHERIC_LOADING
1236    o Changed hFacC to _hFacC in calc_phi_hyd.F
1237    o Added SHORTWAVE_HEATING to some files for consistency
1238    checkpoint46a_pre
1239    
1240    checkpoint46
1241    further merges from release1_p5
1242    o new ctrl package
1243      - adopted from ECCO environment to enable optimization
1244      - added Eliassen Palm fluxes to controls
1245    o added Eliassen Palm flux controls to gradient check package
1246    o cost package
1247      - Compatible with new ctrl package
1248      - added Eliassen Palm cost hooks
1249      - modif's of existing cost functions
1250    o Adjoint-related bug fixes in kpp:
1251      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
1252      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
1253    o autodiff package
1254      - flow directives:
1255        + new for S/R do_the_model_io
1256        + enhanced for S/R checkpoint
1257        + new gmredi.flow
1258      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
1259        disable adcommon.h/g_common.h by default.
1260      - fixed problem for adjoint of global_max
1261    o modified verification/carbon/
1262    o New setup for adjoint of global_ocean
1263    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
1264    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
1265    o incorporated hooks for sponge layer code (external_forcing.F)
1266    
1267    checkpoint45d_post
1268    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
1269    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
1270      (affects plume_on_slope "cg2d" output)
1271    o add new parameter deltaTfreesurf for free-surface time stepping
1272    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
1273  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
1274  o change phiMin in exp1 (to agree with documentation)  o change phiMin in exp1 (to agree with documentation)
1275  o add new flags:  o add new flags:

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