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revision 1.27 by heimbach, Fri Jun 9 03:13:39 2000 UTC revision 1.311 by afe, Thu Jun 24 20:27:32 2004 UTC
# Line 3  $Header$ Line 3  $Header$
3      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
4      ==============================      ==============================
5    
6    checkpoint53e_post
7    o merged cylindrical coord configuration
8    o added rotating_tank experiment
9    checkpoint53e_pre
10    
11    checkpoint53d_post
12    o faulks upgraded: re-generate output.txt that have changed:
13       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
14    o Added Bryan and Lewis, 1979, vertical diffusivity profile
15    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
16    o added Sadourny discretization of Coriolis
17      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
18      - re-enabled use of omega3 (useAbsVorticity)
19    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
20      vector-invariant equations
21      - note: does *NOT* yet use same variable visc. for no-slip BC's.
22    o recoded the lateral boundary conditions for non-hydrostatic w, this time
23      hopefully without new bugs
24      - still to do: biharmonic friction for non-hydrostatic w
25    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
26    o regenerated output for global_ocean_ebm (using -ieee)
27    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
28      of mom_common/
29      - simple re-arrangement of instructions within computing loop
30    checkpoint53d_pre
31    
32    checkpoint53c_post
33    o new version of coupler for AIM+thSIce and Ocean models
34     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
35     - land: change Evaporation of snow
36     - aim with thSIce: fix bug in snow-precip.
37    o changes to calc_gw.F
38     - bug fix for w^2 term near the bottom boundary
39     - (hopefully) improve the lateral slip boundary condtions for use with
40        partial/looped cells
41      - because the bug fix changes two verification experiments anyway (exp5
42        and plume on slope), change the lateral boundary condition from half slip
43        to the value of no_slip_sides
44    o ebm package wasnt quite up to the parallel task. Fixed that.
45    o Adjoint of EBM package + verification
46      * TLM OK
47      * ADM not sufficient accuracy yet (needs further testing)
48    
49    checkpoint53b_post
50    o Commiting new energy balance model to repository
51      * package is pkg/ebm
52      * verif. is verification/global_ocean_ebm
53      * references are in ebm_driver.F
54    C      * X. Wang, P. Stone and J. Marotzke, 1999:
55    C        Global thermohaline circulation. Part I:
56    C        Sensitivity to atmospheric moisture transport.
57    C        J. Climate 12(1), 71-82
58    C      * X. Wang, P. Stone and J. Marotzke, 1999:
59    C        Global thermohaline circulation. Part II:
60    C        Sensitivity with interactive transport.
61    C        J. Climate 12(1), 83-91
62    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
63    C        Destabilization of the thermohaline circulation
64    C        by atmospheric eddy transports.
65    C        J. Climate 7(12), 1870-1882
66    o Will need long integration testing.
67    checkpoint53b_pre
68    
69    o created pkg/mom_common in preparation for variable viscosity code
70    o renamed and split ini_mnc_io
71    o pkg/land: only liquid water can diffuse or run-off
72    o AIM using land: soil wetness availability account for snow
73    o added printMapIncludesZeros to EEPARMS namelist
74    
75    checkpoint53a_post
76    o restore TAMC compatiility for exf_constants.h
77      (no usage of _d in .h)
78    o Additional storing in KPP in an attempt to fix
79      TAMC problem with adjoint of KPP code.
80      (no success...)
81      Identical code works fine with TAF.
82    o Fixed verification/natl_box_adjoint experiments.
83      Initial conditions for Experiments 4 and 5 are now
84      set to "SEAICE_initialHEFF=0", which is more reasonable,
85      and hence gives results closer to that of Experiment 2.
86      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
87    
88    checkpoint53
89    o stable checkpoint with up to date adjoint
90      TLM tests only run for 1st grdchk at the moment. Its unclear if
91      this is a code problem or a problem with resetting code for g_
92      variables that is being autogenerated wrong.
93      Otherwise:
94       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
95       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
96         are both still in chaos following their security messes.
97    
98    checkpoint52n_post
99    o various build (mostly genmake2) changes including:
100      - ability to build/run more easily within Cygwin and MacOS X
101      - more complicated Makefiles with a stronger dependence on Gnu Make
102    o pkg/seaice modifications
103      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
104        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
105        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
106      - changed proxy for geostrophic velocity and updated
107        verification/lab_sea/results/* accordingly
108      - removed ADI dynamic solver from pkg/seaice
109      - replaced all occurrences of 1/CSTICE or 1/CSUICE
110        they caused a segmentation fault under certain circumstances
111      - removed unused field WATR
112    o bug fix in exf-package:
113      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
114         now reflect that.
115    o small fixes in the cal-package:
116      - set reference date to first of January for the 'model'-calendar
117      - failing of cal_CheckDate in cal_FullDate now actually results in a
118        warning
119    o small modifications in exf-package to increase flexibility:
120      - change climtempfreeze from a constant to a runtime parameter that
121        is specified in data.exf_clim (default = -1.9)
122      - introduce runtime parameter windstressmax (default = 2.0) that is
123        specified in data.exf
124    o fix in pkg/thsice:
125      - update Evap (Tsf changes) to be consistent with Latent heat flux
126      - maintain snow precipitation unchanged (even if Tsf >=0).
127     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
128    
129    checkpoint52m_post
130    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
131      this does not change any of the results, because myIter=0 in swfrac always
132      lead to jwtype=2 (the default anyway), but the call makes little sense
133      as a default
134    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
135    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
136      atmospheric model (AIM) to use it ; add a "slab ocean" component.
137    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
138    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
139    o extending useSingleCpuIO option to work with new exch2 I/O format
140      - old-style, missing-tile I/O is still accessible by defining CPP
141        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
142    o monitor package can write to NetCDF files and/or STDOUT
143    o fix re-definition bug in MNC_GRID_INIT_ALL()
144    o doc/api_reference added
145      - a framework for building an API Reference Manual using all
146        the "protex" comments embedded in the code
147      - see pkg/generic_advdiff, pkg/mnc for examples
148    o MNC:
149      - make myThid the last argument for all subroutines
150      - new default for the grid files: NO halos
151      - add useMNC and other run-time flags
152      - separate per-file-group handling of the unlimited dimension
153      - early initialization of MNC w/ flags read at the eeboot stage
154        and lookup tables set in initialize_fixed
155      - write all MNC output to a freshly-created directory
156    o thermodynamics sea-ice (thsice) is now tested with testreport.
157    o test exp. advect_cs: use the standard cs32 grid ; update output.
158    o Added functionality to grdchk:
159      pick global i,j,k position (or nearest wet) where to perform check.
160    
161    checkpoint52l_post
162    o new land formulation:
163      a) use ground enthalpy as prognostic variable to ensure exact
164         energy conservation.
165      b) account for water temperature and for latent heat of freezing
166         in all processes (rain, run-off, ground storage)
167      c) compute surface and ground temperature implicitly.
168    o aim_v23 modification for new land model:
169      a) Treat separately land / ocean / sea-ice surface fluxes
170         to allow implicit computation of land & sea-ice surface temp.
171      b) add snow precipitation.
172    checkpoint52l_pre
173    
174    o fix problem (when 1 tile is empty) in min/max monitor.
175    o fix bug in timeAve (u,vZetatave in common block)
176    o no restoring terms under ice for pkg/seaice
177    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
178    o bug fix for pkg/seaice pickups
179    o change MNC call locations and add coordinate attributes
180    o mask vorticity at the corner ; affects global_ocean.cs output
181    o fix ini_curvilinear_grid ; test CS experiments with mpi
182    o aim.5l_cs: modify sea-ice fraction input file ; update output
183    o exf: Adding simple range check routine for exf fields after read
184    
185    checkpoint52k_post
186    o removed top-level directory "diags"
187      - we migrated these functions to pkg/timeave a long time ago
188    o fixed bug introduced in pkg/monitor
189    o accuracy ctrlprec = 32 insuffient for gradient checks using
190      averaged fields (I/O via cost_averages)
191      -> use ctrl.h in active_file*.F to control I/O precision.
192    o paramter list of CALL ADTHE_MAIN_LOOP
193    o added initial do_the_model_io to ecco
194    o set all ...Freq to zero after cost_final
195      taveFreq, dumpFreq, pChkptFreq
196    o MAIN and ECCO differentiability restored
197    
198    checkpoint52j_post
199    o fix nchklev in tamc.h for global_ocean...
200    o Bringing flow and store directives up-to-date
201    o Really weird thing!
202      call do_the_model_io from the_main_loop with parameters
203      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
204      TAF places a faulty re-call of initialise_varia
205      after cost_final call which should not be there!
206    checkpoint52j_pre
207    
208    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
209      error messages
210    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
211    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
212      debug output
213    o modfied mdsio_writefield.F to handle non-global files under exch2
214    o update AIM Cubed-Sphere exp (aim.5l_cs):
215      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
216    o update AIM Equatorial Channel exp:
217      use standard aim_v23 pkg and change the SST fields to be more realistic.
218    o globalFile now works with exch2
219    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
220      mon_vort3.F to make exch2 friendly with >1 tile per cube face
221    o limit timeave output for hi-res integrations
222    
223    checkpoint52i_post
224    o removed CPP_EEOPTIONS.h from verification/*/code
225    o updated the tiling for global_ocean_pressure
226    checkpoint52i_pre
227    
228    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
229      the old pkg/aim).
230    
231    checkpoint52h_pre
232    o shortened offending lines in exch2_send_rx?.template
233    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
234    o genmake2: add build & execute test for NetCDF code
235    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
236      old grid files, moved CPP_EEMACROS.h to pkg/exch2
237    o added useSingleCPUIO flag to monitor.F and mon_out.F
238    o added temporary hack for sea-ice dynamics on the cube:
239      metric terms are ignored and it is assumed that
240      there is no sea-ice on cube faces 1, 2, 4, and 5.
241    
242    checkpoint52f_post
243    o added exch2 cube routines to pkg/exch2
244    o modified hs94.cs-32x32x5 to use it
245    o added new grid files to hs94.cs-32x32x5
246    checkpoint52f_pre
247    
248    checkpoint52e_post
249    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
250      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
251    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
252      to work with implicit vertical advection and AB ;
253    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
254    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
255     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
256    checkpoint52e_pre
257    
258    o fix bug in impldiff when Nr=1 or Nr=2.
259    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
260    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
261    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
262      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
263    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
264    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
265    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
266    
267    checkpoint52d_post
268    o re-tiled many expts to allow comparison in multi-processor mode
269      - updated output accordingly
270      - changed hs94.128x64x5 to use intial T from file rather than use the
271        random number generator
272    o add infrastructure in model routines for fizhi and gridalt packages
273    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
274    o changes to permit hi-res, cubed-sphere, configuration
275      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
276      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
277      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
278        of surface winds for the cube
279      (A verification experiment, based on global_ocean.cs32x15, but with
280       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
281       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
282       complete with example surface forcing files and matlab scripts to look
283       at the output and compare it with that of global_ocean.cs32x15.)
284    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
285       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
286       to conform to the common rule.
287    o check-in the first version of the coupler + interfaces for multi-components
288       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
289       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
290       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
291       - ocean and atmos. share the same horizontal grid (no interpolation).
292       - exchanges between component and coupler is done in forward_step
293    o new verification experiment, cpl_aim+ocn:
294       coupled ocean - AIM atmosphere on cs32 grid.
295    
296    checkpoint52d_pre
297    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
298    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
299    
300    checkpoint52c_post
301    o Fixing OPTIONS files for use of exf:
302      - ALLOW_ECCO not needed
303      - ECCO_CPPOPTIONS.h should not be included from
304        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
305        as has been the case in the past
306      - All cal/exf related options are currently set in
307        single header file. Should remain so until we
308        agree on a consistent new policy.
309    o Removed all CPP options for cal package.
310      cal has no more CPP options.
311    o modified STOREs in GAD_ADVECTION
312    o corrected key comp. for passkey
313    
314    checkpoint52b_post
315    o new version: "thsice" of thermodynamic sea-ice pkg:
316     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
317     - modify fluxes but do not change theta directly;
318     - light cleaning of bulk_force pkg (still needed with thsice).
319     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
320       + output_thsice.txt to test thsice & bulk_force pkgs.
321    o put back grid & coriolis monitor output.
322    checkpoint52b_pre
323    
324    o call "do_the_model_io" at the beginning (=> dump initial state)
325    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
326    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
327      (need info on NUMBER_OF_PTRACERS)
328    o missing PTRACERS headers in some routines
329    o default tamc.h in pkg/autodiff supposed to crash
330      to ensure proper customization
331    
332    checkpoint52a_post
333    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
334      - moved surfaceTendencyTice from pkg/seaice to main code
335      - subroutine FREEZE_SURFACE now limits only surface temperature
336        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
337        => new output.txt for global_ocean.cs32x15 & global_with_exf
338      - keep the old version of FREEZE for backward compatibility;
339        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
340      - corresponding modifs for TAF directives
341    o added surface flux output variables to TIMEAVE_STATVARS
342    o time-averaged output for pkg/ptracers
343    o fix problem with ECCO-related divided adjoint
344      snapshot file was missing some ad-variables,
345      but no warning issued by TAF
346    
347    checkpoint52a_pre
348    o some bug fixes for #undef REAL4_IS_SLOW
349    
350    checkpoint52 = ecco_c52_e35
351    o after testing adjoints of checkpoint51u_post
352    
353    checkpoint51u_post
354    o this is the post-merge tag of the ecco-branch
355      (needs another clean checkout and re-testing)
356    o various natl_box_adjoint configs and results
357      but no input fields
358    o obcs adjoint not yet merged!
359    o adding ECCO global 1x1 and 2x2 degree configs
360    o updated/extended some store directives for seaice
361    o pkg/ecco now containes ecco-specific part of cost function
362    o top level routines the_main_loop, forward_step
363      supersede those in model/src/
364      previous input data.cost now in data.ecco
365      (new namelist ecco_cost_nml)
366    o in ctrl/ cleaned some cross-dependencies and updated CPP options
367    
368    checkpoint51t_post
369    o this is the pre-merge tag of the ecco-branch
370    
371    checkpoint51s_post
372    o cleanup: removed various obsolete #define-s
373    o pkg/grdchk
374      - renamed 'ph-grd 3' to 'grad-res'
375      - merged from ecco-branch
376        (remaining bug fixes for obcs gradient checks)
377      - additional high-precision output for testreport
378        (grep for 'precision_grdchk_result')
379    
380    checkpoint51r_post
381    o cleaned up or removed CPP_OPTIONS.h files
382    o updated results for some of the tests to reflect the new
383      optfiles (-ieee: -O0 instead of -O3)
384    
385    checkpoint51q_post
386    o cd_code:
387      - moved cd_scheme.F -> cd_code_scheme.F
388      - separate read_checkpoint from cd_code_ini_vars.F
389      - separated cd_code part from write_checkpoint
390      - updated AD_SOURCE, generated .flow
391      - added CD_CODE_VARS.h to the_main_loop
392      - Moving cd_code specific store dir.s to pkg/cd_code
393    o ctrl package totally restructured
394      - pack/unpack now optional and decoupled from
395        xx_/adxx_ I/O
396      - ctrl_pack/unpack cleaned
397        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
398      - confined inclusion of AD_CONFIG.h to where necessary.
399    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
400    
401    checkpoint51p_post
402    o create initial cd_code package
403      - WARNING: the initialization of fields within packages
404        is broken because INI_FIELDS (where READ_CHECKPOINT is
405        called) is called *before* PACKAGES_INIT_VARIABLES.
406        This seems to be backwards since
407        1) its important to initially zero the entire field including
408           the "halo" region
409        2) zeroing needs to be done *before* reading pickup info
410           and the pickup call might or might not happen in any
411           particular run
412      - this needs an overhaul for R2
413    o cleanup verification/*/code/GMREDI_OPTIONS.h
414    o cleanup testreport
415    
416    checkpoint51o_post
417    o bringing AD-related verif's up to date with genmake2
418      - carbon/
419      - global_ocean.90x40x15/
420      - hs.94.1x64x5/
421      - (front_relax/ )
422    o (more) consistent directory structure for AD-related verif.'s
423    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
424    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
425    o bug fix in find_alpha.F for MDJWF:
426      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
427        change rho -> rho-rhoConst
428      - replace call find_rho to find_rhonum
429    o initialisation of rFlx extended to full array (required by TAF)
430      and shifted to thermodynamics
431    o removed PTRACERS.h in ptracers routine
432    o added surfacetendencyPtr to S/R parameter list pracers_forcing
433    o Correcting initialisations for fVerU, fVerV.
434    o helping TAF to recognize dependency on kUp for
435      fVerU, fVerV
436    o Replacing delZ by delR in pkg/ctrl/
437    checkpoint51o_pre
438    
439    o undid all of cp51 pending some cleanups and discussion
440    o added the [#include "AD_CONFIG.h"] statement to all files that need
441       it for adjoint/tl #defines
442     o re-worked the build logic in genmake2 to support AD_CONFIG.h
443     o removed tools/genmake since it no longer works
444    
445    checkpoint51n_post
446    o modifications to make FREEZE flux visible to pkg/kpp
447      - moved surfaceTendencyTice from pkg/seaice to main code
448      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
449      - subroutine FREEZE now limits only surface temperature
450        (this means new output.txt for global_ocean.90x40x15,
451         global_ocean.cs32x15, and global_with_exf)
452    o added surface flux output variables to TIMEAVE_STATVARS
453    
454    checkpoint51n_pre
455    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
456    o added [#include "AD_CONFIG.h"] to all files that use the following
457      defines:
458      - ALLOW_ADJOINT_RUN
459      - ALLOW_TANGENTLINEAR_RUN
460      - ALLOW_ECCO_OPTIMIZATION
461    
462    checkpoint51m_post
463    o incorporating changes to get TAMC/TAF working in genmake2
464      - added new TAMC/TAF targets to the Makefile
465      - various cleanups related to package handling
466      - these changes should have no impact on the forward model
467    
468    checkpoint51l_post
469    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
470     - faster algorithm for cal_addtime.F
471     - higher precision arithmetic, where needed
472     - pkg/exf *startdate variables changed from calendar date to
473       model integration time
474    
475    checkpoint51l_pre
476    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
477    o enable to apply restoring on S & T only in a latitude band.
478    o update output (external_forcing_surf modif. change truncation errors)
479       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
480    
481    checkpoint51k_post
482    o change default to: useNHMTerms=.FALSE.
483     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
484       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
485     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
486        exp1, ideal_2D_oce
487     - change data file of oceanic exp (leave the results unchanged for now)
488       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
489    o set gravitySign automatically according to the vertical coordinate used
490      (and change sign: back to "logical" value: +1 when R increases downward)
491    o added an include barrier to the default CPP_OPTIONS.h and
492      removed the #include "PACKAGES_CONFIG.h" from it
493    o fix a bug in mom_fluxform (from chk51j_post)
494    
495    checkpoint51j_post
496    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
497    o adjusted some flow directives (dynamics, thermodynamics)
498    o added cubed-sphere case to test cost function
499    o heckpoint_lev?_directives.h now include
500      pkg-specific directives, whenever those are enabled.
501    o Moving pkg-specific flow directives to corresponding pkg
502      Moving pkg-specific differentiation list to corresponding pkg
503      Moving pkg-specific checkpoint-lev storing to corresponding pkg
504      ---> conventions are
505           - pkg_ad.flow
506           - pkg_ad_diff.list
507           - pkg_ad_check_lev?_dir.h
508    
509    checkpoint51i_post
510    o merge of the branch-genmake2
511      - knowingly breaks the older genmake
512      - automatic generation of all ALLOW_${PKG_NAME} defines
513      - new testreport supersedes older testscript
514    o large number of package inclusion and header cleanups
515    checkpoint51i_pre
516    
517    o new output for adjoin of global ocean vector invariant
518    o fix for checkpoint of thermodynamic seaice and bulk_force
519    o Steph gchem various cleanups
520    
521    checkpoint 51h_pre
522    o fixed some single quotes
523    o modify gchem pkg to be more versatile
524    o modifications to clean up dic pkg
525    o add pkg/cfc
526    
527    checkpoint51g_post
528    o provide links for ARPACK and ADM*TLM
529    o start removing verification/vero/
530    o update AD-related stuff
531      (in particular some IF-statements in model/src/ routines)
532    o adding to verification/global_ocean.90x40x15/ adjoint of
533      vector invariant setup
534    
535    checkpoint51f_post
536    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
537    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
538      of tracer Green's fucntions for ocean inversion project.
539    
540    checkpoint51f_pre
541    o Added on-the-fly spatial interpolation capability
542        "USE_EXF_INTERPOLATION" to pkg/exf.
543      - This is a temporary Cartesian-grid hack until
544        the super-duper ESMF coupler becomes available.
545      - See verification/global_with_exf/README for usage example.
546      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
547        flags and modified pkg/seaice accordingly.
548    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
549        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
550        non-local transport term.
551    
552    checkpoint51e_post
553    o pkg/mom_vecinv:
554      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
555      - add time-ave diagnostic of vorticity advection.
556    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
557    o atmospheric geopotential: - include water vapor effect;
558                                - use p^kappa in p* scaling.
559    o land pkg: read initial state from files.
560    o AIM : add stratospheric drag in the upper level
561    
562    checkpoint51d_post
563    o change function ILNBLNK (=> last non-blank char.) to return zero
564      (instead of the string length) when the string. char is empty
565    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
566    o modif's to restore TAMC compatibility
567      - avoid "_d" constructs in PARAMETER declarations
568      - avoid interrupting lines by comment lines
569    o Use cluster local disks for purely local I/O
570      vs. globally visible disks needed for ctrl stuff
571      (merged from ecco-branch)
572      - new active_file_loc... and mdsio_..._loc routines
573      - affected packages: autodiff, ctrl, grdchk, mdsio
574    
575    checkpoint51c_post
576    o introducing integer flag debugLevel
577      - debLevZero: suppress all output
578      - debLevA: standard
579      - debLevB: equivalent to current debugMode=.TRUE.
580    o introducing pathname variable mdsioLocalDir for mdsio
581      that can be specified at runtime
582      (relevant for cluster I/O to local disk)
583    `
584    >>>checkpoint51b_post
585    adjoint of ptracers
586    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
587    o extended state in checkpoint_lev?, etc.
588    o alternative ctrl/cost with tr1 or ptracer
589    o new comlev1_bibj_ptracers
590    o new ptracers.flow
591    o made ptracers_forcing same as external_forcing_s
592    o added verification for adjoint with ptracers
593      - adm. grdchk fail so far
594      - tlm. grdchk OK
595      - checked tapelev/comlev recomputations: OK
596    <<<checkpoint51b_pre
597    
598    checkpoint51a_post
599    o added code for biogeochemistry package
600      - new pkgs: dic, gchem
601      - new subroutine in ptracers
602    o modify code for biogeo packages
603      - in model/src and pkg/ptracers
604    
605    checkpoint51
606    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
607      - autodiff, ctrl, exf, grdchk, seaice
608      kept separate packages
609      - cost, ecco, obcs
610    o updating verification/internal_wave, verification/lab_sea
611      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
612    
613    checkpoint50i_post
614    o Preparing next differentiable checkpoint and sync
615      of MAIN vs. ecco-branch
616      - 1st step: this one is differentiable
617      - 2nd step: next(! not this) checkpoint will have updated packages
618                  from ecco-branch)
619    
620    checkpoint50h_post
621    o new package "land": provide surface BC for AIM.
622    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
623    o AIM: use true log-P extrapolation for near surface temp (= as in
624        F.Molteni paper) ; update aim.5l_cs output.
625    o New variable in PARM03 for more flexible pickups
626    o somewhat cleaned package initialisation sequence for
627      ctrl/ cost/ ecco/ in packages_... routines
628    
629    checkpoint50g_post
630    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
631      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
632      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
633        made the default because of faster convergence than ADI
634    
635    checkpoint50f_post
636    o exf totally restructured
637      - replaced all exf_set_ routines by one generic exf_set_gen.F
638        and made sure it's still differentiable
639      - split exf_getffields.F into new exf_bulkformulae.F
640      - exf_inscal_/exf_outscal_ suffixes consistent with field names
641      - updated adjoint/makefile and relevant verif. accordingly
642    
643    checkpoint50f_pre
644     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
645          + change Evap over land. (update aim.5l_cs output)
646     o added missing .cvsignores and made uniform across expts
647     o changed configuration of tidal_basin_2d expt
648     o added pkg/debug functions for tracing code in fatal crashes
649     o tidied pkg/monitor to use MONITOR_OPTIONS.h
650     o new fn in pkg/monitor to stop model if solution grows too big
651     o removed lots of single quotes from comments
652    
653    checkpoint50e_post
654    o make KPP work with PTRACERS
655     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
656       nearly a copy of kpp_transport_s
657     - there is no analogue to SurfaceTendencyS, so I have to use
658       gPtr(of the surface layer) instead
659    o add a new platform SunFire+mpi (SunFire 15000) to genmake
660    checkpoint50e_pre
661    
662    checkpoint50d_post
663    o change kpp output from multiple-record state files to single-record state
664      files analogous to write_state.F
665    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
666      analogous to the cg2d-related output.
667    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
668      so that writing to internal file fn (with length 512) fails.
669    checkpoint50d_pre
670    
671    checkpoint50c_post
672    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
673    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
674    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
675    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
676    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
677    
678    checkpoint50c_pre
679    Merging from release1_p13:
680    o bug fix for pkg/seaice dynamic solver
681    o Added SEAICE_initialHEFF to pkg/seaice
682    
683    checkpoint50b_post
684    o store u*,v* in gU,V instead of in guNm1,gvNm1
685    o in order to put the momForcing out of the Adams-Bashforth:
686      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
687      to timestep.F
688    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
689    o re-generate output for highly sensitive test-exp:
690       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
691    
692    checkpoint50b_pre
693    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
694    o corrected CPP option mismatch in exf_Bulk... functions for case
695      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
696    
697    checkpoint50a_post
698    o Bug fix for merging between c50 and KPP.
699      ikey was passed from thermodynamics to kpp_calc via
700      common block rather than being recomputed in kpp_calc,
701      in contradiction with new key itdkey.
702      New key ikppkey created, and tamc.h headers updated.
703    
704    checkpoint50
705    - 2nd step of merge with ecco-branch:
706      merge changes in ecco-branch back into main trunk
707    - bug fix in find_alpha
708    - more storing in gmredi_calc_tensor.F, kpp_routines.F
709    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
710    - merged some sliced AD support routines
711    
712    checkpoint49
713    merged from ecco-branch:
714    o exf:
715      - Enable initialisation of forcing fields to constant
716        (runtime) values.
717      - in exf_getffields.F
718        Reduce i-/j-loop to interior domain, discarding overlaps.
719        That also fixes wrong TAF-key computations for key_1, key_2
720        with bulf formulae.
721      - exf_init.F modify #ifdef for exf_init_evap
722      - exf_getffieldrec.F, ctrl_getrec.F
723        The following INT-usages are not safe:
724          fldsecs  = int(fldsecs/fldperiod)*fldperiod
725          fldcount = int(fldsecs/fldperiod) + 1
726        and were modified.
727    o autodiff: checkpoint_lev...
728      - updated storing for bulk formulae (some arrays were missing)
729      - added state for seaice package
730      - synchronized with main branch
731    o DIVA:
732      Modif.s in
733      - the_main_loop.F
734      - the_model_main.F
735      and added cost_final_restore.F cost_final_store.F
736      o With these changes, it is possible to fully separate
737        the first forward run to compute the cost function (mdthe_main_loop)
738        and adjoint runs over individual DIVA intervals (adthe_main_loop)
739        into separate model executions.
740        This enables better tuning of DIVA to given queue sizes.
741      o Loss of cost function value in consecutive DIVA runs is
742        fixed by storing to 'costfinal' file.
743      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
744        beginning/end of adjoint integration is accounted for.
745      The current changes apply to TAF-1.4.26.
746      TAF has one remaining bug, requiring one manual change
747      (see MITgcm manual).
748    o cal: synchronized between MAIN and ecco-branch
749    
750    checkpoint48i_post
751    o Changes to restore differentiability of code w.r.t. previous tag
752      (mostly adding new routines to make list and replacing
753      pressure by totPhiHyd).
754    o Updated and merged grdchk package
755      - has both ADM and TLM checks
756      - works for single- and multi-proc.
757      - output cleaned
758      - worked successfully for parallel DIVA
759    o genmake:
760      - Adding -platform=SP4
761      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
762    o Modif. for DIVA:
763      ctrl_unpack should not be called in intermediate DIVA interval.
764      (similar thing would apply for active files such as
765      tbar, sbar, psbar, which should not be reinitialised;
766      only relevant for ecco-branch)
767    
768    checkpoint48h_post
769    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
770    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
771    o Added SEAICE_initialHEFF to pkg/seaice
772    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
773    
774    checkpoint48g_post
775    --- EOS:
776    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
777      store total Potential in totPhyHyd for diagnostics & EOS.
778    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
779    --- Pressure/geopotential gradient:
780    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
781    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
782      ( changes results of global_ocean_pressure )
783    o NLFS + z-coord.: add eta*Rho' contribution.
784    o accurate phiHyd when using interface-W at the middle between 2 centers
785     ( changes results of ideal_2D_oce )
786    o includes r* 2nd term in potential gradient.
787    
788    checkpoint48f_post
789    Merging from release1_p12:
790    o Modifications for using pkg/exf with pkg/seaice
791      - improved description of the various forcing configurations
792      - added basic radiation bulk formulae to pkg/exf
793      - units/sign fix for evap computation in exf_getffields.F
794      - updated verification/global_with_exf/results/output.txt
795    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
796      (SBO) core products, including oceanic mass, center-of-mass,
797      angular, and bottom pressure (see pkg/sbo/README.sbo).
798    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
799      to avoid negative values in shallow regions.
800      - updated verification/natl_box/results/output.txt
801      - updated verification/lab_sea/results/output.txt
802    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
803    o Added useSingleCpuIO option (see PARAMS.h).
804    o Updated useSingleCpuIO option in mdsio_writefield.F to
805      work with multi-field files, e.g., for single-file pickup.
806    o pkg/seaice:
807      - bug fix in growth.F: QNET for no shortwave case
808      - added HeffFile for specifying initial sea-ice thickness
809      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
810    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
811      kpp_transport_t.F, forward_step.F, and the_main_loop.F
812    o pkg/seaice:
813      - adjoint-friendly modifications
814      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
815    
816    checkpoint48e_post
817    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
818    o dynamics: change definition of computational domain & adapt mom_fluxform
819      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
820    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
821        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
822        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
823        global_ocean.90x40x15 global_with_exf global_ocean_pressure
824        inverted_barometer solid-body.cs-32x32x1
825      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
826    
827    checkpoint48d_post
828    o in preparation for r*:
829     a) use pre-computed gradient of hydrostatic potential:
830        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
831     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
832        => affects results of glob_oce_pressure (different truncation error)  
833      update output.txt of ideal_2D_oce & global_ocean_pressure
834    
835    checkpoint48d_pre
836    o in preparation for r*:
837      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
838      pass the 2 comp. of the grad. as arguments to momentum S/R.
839      but for the moment, only used if it does not change the results.
840    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
841    
842    checkpoint48c_post
843    Modifications in treatment of initial flux forcing controls
844    to avoid extra storing of flux fields.
845    
846    checkpoint48c_pre
847    o Added tidal_basin_2d experiment (currently 1D!)
848    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
849    
850    checkpoint48b_post
851    o r* coordinate added in #ifdef NONLIN_FRSURF block.
852     (modification to pressure gradient not yet implemented)
853    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
854      (for U & V) that are used for vertical advection of momentum.
855    
856    checkpoint48a_post
857    o In preparation for r*, use temp. array to compute vertical transport
858       in flux-form momentum pkg. => change results of few test-exp.
859      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
860                        lab_sea, natl_box & plume_on_slope
861    
862    checkpoint48
863    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
864    
865    checkpoint47j_post
866    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
867    o moved adexch from forward_step to addummy_in_stepping
868    o added exch in ctrl_map_...
869    o aveFreq.=0. at end of cost_final to avoid overwrite in
870      reverse checkpointing loop
871    o Yet more changes in gmredi:
872      * adgmredi_calc_tensor
873        avoiding all recomputation of gmredi_slope_limit
874      * adgmredi_x/y/rtransport
875        added flag for excessive storing to avoid recomp. of
876        u/v/rtans, dTdx/y/z
877        -> this is not really necessary and very memory-consuming
878      * adgmredi_slope_psi:
879        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
880      * gmredi_slope_limit
881        re-activated full calculation of taperfct for case 'ac02'
882    o updating verification/ adjoints of carbon, global_ocean.90x40x15
883    
884    checkpoint47i_post
885    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
886    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
887      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
888    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
889    o gmredi: fix few bugs.
890    
891    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
892    This will be a good checkpoint to plug into the ecco-branch.
893    o few modif.'s to get latest version adjointed
894      (mainly kick out code in ini_linear_phisurf)
895    o modif's to run adjoint with exactConserv
896    o case GM_BOLUS_ADVEC should be cleaned
897      S/R gmredi_slope_psi should be cleaned
898    o verification/carbon now has exactConserv=.TRUE.
899    
900    checkpoint47g_post
901    o time-average AIM output: becomes independent from statvars time-average
902      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
903    o After TAF bug fix:
904      Tested adjoint of gmredi package.
905      Tests were done with checkpoint47 rather than with latest
906      checkpoint47f_post since the latter is broken for the adjoint
907      verification/carbon/ contains both ADM and TLM gradient checks.
908    Here they are, before they get changed/lost/stolen.
909    Mostly modif.'s to fix numerical sensitivities.
910    Gradient checks OK for
911    - GM_taper_scheme:
912      * clipping
913      * ac02
914      * linear
915      * glw91
916      * dm95
917      * ldd97
918    - GMREDI_OPTIONS:
919      * GM_VISBECK_VARIABLE_K
920      * GM_NON_UNITY_DIAGONAL
921      * GM_EXTRA_DIAGONAL
922      * GM_BOLUS_ADVEC
923    in conjunction with data.gmredi parameters to be checked in
924    in a few minutes under verification/carbon/code/
925    
926    checkpoint47f_post
927    Merging from release1_p10:
928    o modifications for using pkg/exf with pkg/seaice
929      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
930        and SEAICE_EXTERNAL_FLUXES
931      - pkg/exf CPP options EXF_READ_EVAP and
932        EXF_NO_BULK_COMPUTATIONS
933      - usage examples are Experiments 8 and 9 in
934        verification/lab_sea/README
935      - verification/lab_sea default experiment now uses
936        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
937    
938    checkpoint47e_post
939    o created a tag prior to creating a branch
940    
941    checkpoint47d_post
942    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
943      at the bottom boundary had an erroneous half slip boundary condition
944    o added bottom drag and no slip boundary condition capabilities to
945      oceanic pressure coordinates code
946    o added new verification experiment global_ocean_pressure, this experiment is
947      also described in the tutorial section of the manual
948    checkpoint47d_pre
949    
950    checkpoint47c_post
951    o Added a verification experiment for a global cubed-sphere ocean run
952      -  verification/global_ocean.cubed32x32x30
953      -  uses pkg/therm_seaice and pkg/bulk_forcing
954    
955    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
956    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
957      when using P-coordinate; only implemented for atmospheric config.
958    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
959      NOTES: requires option NONLIN_FRSURF to be "#define".
960    o update advect_xz/results/output.txt (left from checkpoint44g_post)
961    
962    checkpoint47b_post
963    Merging from release1_p9:
964    o pkg/seaice
965      - removed GOTO's and added taf directives
966      - double precision constants to reduce the g77 (Linux)
967        to F77 (SGI) differences reported in release1_p8
968    o tools/genmake
969      - added SGI options
970    o verification/testscript
971      - updated to that of checkpoint47a_post
972    o verification/global_ocean.90x40x15/input/eedata
973      - modified for SGI f77 compatibility
974    o verification/lab_sea
975      - added description of sea-ice model
976      - added missing matlab routines
977      - added test of thermodynamics parallelization
978    
979    checkpoint47a_post
980    o new pkg: aim_v23
981     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
982       for now, keep the same surface forcing as before.
983     - Part-Cell implemented into AIM; check that Heat & Water are conserved
984     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
985     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
986    o add diagnostic of surface correction term in monitor output
987    
988    o bulk_force and therm_seaice
989    - Two packages:  bulk_force (Bulk forcing)
990      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
991    - Earlier integration from Stephaine Dutkiewicz
992      and Patrick Heimbach.
993    - Two ifdef statements for compile time,
994       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
995    
996    checkpoint47
997    differentiable version of checkpoint46n_post
998    o bug fix in quasihydrostaticterms
999    o * "clean" adjoint code (in terms of extensive recomputations)
1000        can now be obtained for all GMREDI options (i.e. for
1001        - GM_VISBECK_VARIABLE_K
1002        - GM_NON_UNITY_DIAGONAL
1003        - GM_EXTRA_DIAGONAL
1004        - GM_BOLUS_ADVEC )
1005      * However, wrong gradient check problem remains unsolved.
1006      * New CPP options have been introduced for different
1007        tapering schemes
1008    o external_fields_load now part of differentiation list
1009    o pressure needs multiple storing;
1010      would be nice to have store_pressure at beginning or
1011      end of forward_step, e.g. by having phiHyd global (5-dim.)
1012      (NB: pressure is needed for certain cases in find_rho,
1013      which is also invoked through convective_adjustment).
1014    o recomputations in find_rho for cases
1015     'JMD95'/'UNESCO' or 'MDJWF' are OK.
1016    o #define ATMOSPHERIC_LOADING should be differentiable
1017    o ini_forcing shifted to begining of initialise_varia
1018    o Incorporating QNVS line search routines into MITgcm
1019      (this is separate code, and therefore not under pkg)
1020      lsopt/, optim/
1021    o Updated verification/carbon/
1022      - #define GM_VISBECK_VARIABLE_K
1023      - GM_taper_scheme    = 'ldd97'    
1024    
1025    checkpoint46n_post
1026    Merging from release1_p8:
1027    o verification/natl_box:
1028      updating new external_fields_load routine
1029    o New package: pkg/seaice
1030      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
1031      The sea-ice code is based on Hibler (1979-1980).
1032      Two sea-ice dynamic solvers, ADI and LSR, are included.
1033      In addition to computing prognostic sea-ice variables and diagnosing
1034      the forcing/external data fields that drive the ocean model,
1035      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
1036      The implied surface heat flux is then stored in variable
1037      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
1038      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
1039      non-local transport term.  Because this call precedes model
1040      thermodynamics, temperature under sea-ice may not be "exactly" at
1041      the freezing point by the time theta is dumped or time-averaged.
1042      N.B.: fairly large differences in accuracy occur across
1043            different platforms/compilers; comparison between
1044            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
1045            generated output gives:
1046       T           S           U           V
1047      C D M    c        m  s        m  s        m  s        m  s
1048      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
1049      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
1050      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
1051    
1052      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
1053    o GAD:
1054      - generated new common blocks to account for call of
1055        same gad routines with differing traceridentities
1056        (needed to modify tracerIdentity indices in GAD.h)
1057      - generated separate common blocks for case useCubedSphereExchange
1058        (Department of Futurology)
1059      - parameter lists to gmredi_?transport: added tracerIdentity
1060      - added new key indices to tamc.h
1061    o external_fields_load:
1062      - added this routine to TAF list
1063      - needed to make some common blocks global and additional storing
1064        along the same lines as exf package (checkpoint_lev?_directives.h)
1065    o exf:
1066      updated external forcing package
1067      - bug fixes carried over from ecco-branch
1068        (missing OBCS_OPTIONS.h in two routines)
1069      - enable easy to use "no forcing".
1070      - added exf I/O for atmospheric loading
1071      - added exf I/O for runoff data
1072      - transfered scaling between exf <-> MITgcm to exf namelist
1073    o Adding new verification experiment global_with_exf.
1074      This verification experiment is almost identical to the
1075      global_ocean.90x40x15 experiment, except that it uses
1076      the exf (and cal) package instead of the
1077      external_fields_load routine (cf README file).
1078    
1079    checkpoint46m_post
1080    o modified testscript to return -- when there are no lines of "%MON" output
1081    o added new flag "quasiHydrostatic" for QH mode
1082      and new routine quasihydrostaticterms()
1083    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
1084      New routine: mom_u_coriolis_nh()
1085    o fixed sign of non-hydrostatic metric terms in u and v equations.
1086      Depend on correct sign of gravitySign.
1087    o added work.pc* to .cvsignore in aim directories using ifc
1088    o introduced flag for controllin non-hydrostatic metric terms
1089    o removed gravitySign from PARM04
1090    o switched to g77/ifc from pgf77 in aim experiments
1091    
1092    checkpoint46l_post
1093    o made convective adjustment work with pressure coordinates:
1094     - changed the direction of k-loop in convective_adjustment.F for the
1095       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
1096     - adjusted the reference pressure k-index in convective_adjustment.F
1097     - adjusted the convection condition in convect.F (in analogy to
1098       calc_ivdc.F)
1099     - convective_adjustment no longer computes anything on the halos
1100     - removed the warnings about negative salinity from find_rho.F and
1101       find_alpha.F; instead the new routine look_for_neg_salinity, called
1102       at the beginning of find_rho, find_alpha, and find_beta, does a
1103       check of the entire slice, if CPP-option
1104       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
1105    checkpoint46l_pre
1106    
1107    checkpoint46k_post
1108    o fixed the verification/global_ocean.90x40x15 experiment:
1109     - new bathymetry (the world according to A., JMC, and M.)
1110     - new initial fields and forcing fields (*.bin files)
1111     - new POLY3.COEFFS (for the next release one should switch to a full
1112       equation of state: JMD95P or MDJWF)
1113     - fixed several errors and redundancies in the data file
1114     - experiment uses looped cells
1115     - added matlab directory with diagnostic scripts for plotting of output
1116    
1117    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
1118     - read AIM physics parameters from a file (data.aimphys)
1119     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
1120    
1121    checkpoint46j_post
1122    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
1123    o move wVel computation at the end of the time step, in S/R integr_continuity
1124    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
1125    o update timeave pkg for wVel diagnostic.
1126    checkpoint46j_pre
1127    
1128    checkpoint46i_post
1129    o Clean up AIM package (and keep the results unchanged):
1130      include CPP_OPTION and use IMPLICT NONE in all routines ;
1131      declare all the variables _RL ; use _d 0 for all numerical constants.
1132      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
1133    
1134    checkpoint46h_post
1135    o cleaned up the use of rhoNil and rhoConst.
1136      - rhoNil should only appear in the LINEAR equation of state, everywhere
1137        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
1138        and the dynamical equations are all divided by rhoConst
1139    o introduced new parameter rhoConstFresh, a reference density of fresh
1140      water, to remove the fresh water flux's dependence on rhoNil. The default
1141      value is 999.8 kg/m^3
1142    o cleanup up external_forcing.F and external_forcing_surf.F
1143      - can now be used by both OCEANIC and OCEANICP
1144    checkpoint46h_pre
1145    
1146     Added code to convert surface volume flux (fresh water) into
1147     a mass flux when using P coordinates in the ocean (OCEANICP).
1148     Note: It assumes you have set rho0=rhoConst=density of fresh water.
1149    
1150    checkpoint46g_post
1151    o Include a new diagnostic variable phiHydLow for the ocean model
1152      - in z-coordinates, it is the bottom pressure anomaly
1153      - in p-coordinates, it is the sea surface elevation
1154      - in both cases, these variable have global drift, reflecting the mass
1155        drift in z-coordinates and the volume drift in p-coordinates
1156      - included time averaging for phiHydLow, be aware of the drift!
1157    o depth-dependent computation of Bo_surf for pressure coordinates
1158      in the ocean (buoyancyRelation='OCEANICP')
1159      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
1160        Theta, Salinity, and Pressure in the parameter list. This routine is
1161        presently contained in find_rho.F. This routine does not give the
1162        correct density for 'POLY3', which would be a z-dependent reference
1163        density.
1164    o cleaned up find_rho
1165      - removed obsolete 'eqn' from the parameter list.
1166    o added two new verification experiments: gop and goz
1167      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
1168    checkpoint46g_pre
1169    
1170    checkpoint46f_post
1171    o Enable tangent linear (forward mode) gradient checks:
1172      - extended active file handling to g_... files
1173      - added TANGENT_SIMULATION to theSimulationMode
1174      - extended grdchk package accordingly
1175    o added tangent linear setup in verification/carbon/code_ftl
1176    o added adjoint setup in verification/front_relax/code_ad
1177    
1178    checkpoint46e_post
1179    o Added new equation of state -> MDJWF
1180      - EOS of McDougall et al., 2002, JAOT, submitted
1181      - caveat: the equation of state is only valid for a smaller (more
1182        realistic?) range of values than JMD95P/Z and UNESCO
1183      - added masks to the calculation of pressure in store_pressure
1184      - added more check values for density in check_eos (ini_eos.F), some of
1185        the old check values are out of the range of the MDJWF-eos, so don't
1186        expect perfect matches for those
1187    checkpoint46e_pre
1188    
1189    checkpoint46d_post
1190    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
1191      'OCEANICP', also initialised field pressure correctly in ini_eos in the
1192      case of pressure coordinates. eosType='JMD95Z' in
1193      combination with buoyancyRelation='OCEANICP' now causes an error.
1194    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
1195      in find_alpha/beta.
1196    checkpoint46d_pre
1197    
1198    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
1199      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
1200    
1201    checkpoint46c_post
1202    o Changes necessary for ocean in p-coordinates
1203     -  Added new buoyancy relation = 'OCEANICP'
1204     -  Added new parameters = gravitySign (this used to be contained inside
1205        the factor dRdZ which I added when we first switched to R coordinates).
1206     X GM/Redi is not compatible (yet)
1207     X bottom drag and no-slip need to be debugged.
1208    checkpoint46c_pre
1209    
1210    checkpoint46b_post
1211    o Added new equation of state -> JMD95Z and JMD95P
1212      - EOS of Jackett and McDougall, 1995, JAOT
1213      - moved all EOS parameters into EOS.h
1214      - new routines ini_eos.F, store_pressure.F
1215    o Added UNESCO EOS, but not recommended because it requires
1216      in-situ temperature (see JMD95)
1217    o Modified formatting for knudsen2.f in utils/knudsen2 and added
1218      unesco.f to be used with POLY3
1219    checkpoint46b_pre
1220    
1221    checkpoint46a_post
1222    o Added (atmospheric) pressure loading
1223      - new field in FFIELDS.h, etc...
1224      - new cpp flag ATMOSPHERIC_LOADING
1225    o Changed hFacC to _hFacC in calc_phi_hyd.F
1226    o Added SHORTWAVE_HEATING to some files for consistency
1227    checkpoint46a_pre
1228    
1229    checkpoint46
1230    further merges from release1_p5
1231    o new ctrl package
1232      - adopted from ECCO environment to enable optimization
1233      - added Eliassen Palm fluxes to controls
1234    o added Eliassen Palm flux controls to gradient check package
1235    o cost package
1236      - Compatible with new ctrl package
1237      - added Eliassen Palm cost hooks
1238      - modif's of existing cost functions
1239    o Adjoint-related bug fixes in kpp:
1240      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
1241      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
1242    o autodiff package
1243      - flow directives:
1244        + new for S/R do_the_model_io
1245        + enhanced for S/R checkpoint
1246        + new gmredi.flow
1247      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
1248        disable adcommon.h/g_common.h by default.
1249      - fixed problem for adjoint of global_max
1250    o modified verification/carbon/
1251    o New setup for adjoint of global_ocean
1252    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
1253    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
1254    o incorporated hooks for sponge layer code (external_forcing.F)
1255    
1256    checkpoint45d_post
1257    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
1258    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
1259      (affects plume_on_slope "cg2d" output)
1260    o add new parameter deltaTfreesurf for free-surface time stepping
1261    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
1262    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
1263    o change phiMin in exp1 (to agree with documentation)
1264    o add new flags:
1265     - T,S forcing inside/outside Adams-Bashforth
1266     - turn off temp,salt advection and/or forcing
1267     - for each tracer, define internal flag for multiDimAdvection & A-B
1268    o monitor: change definition of KE to check conservation of Energy
1269    
1270    checkpoint45c_post
1271    o Removed f90 comments ("!")
1272    o Modified initialisations to enable exf package for MITgcm
1273      (without invoking ECCO_PACKAGE).
1274    o modifications to gradient check package (Martin Losch)
1275      - enable centered differences
1276      - modified format of standard output
1277    
1278    checkpoint45b_post
1279    o cleaned exchange calls in cg2d
1280    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
1281    o included CPP option SINGLE_LAYER_MODE in thermodynamics
1282      to configure barotropic setup (Martin Losch)
1283    o moved some initialisations within bi,bj loop in dynamics
1284      (TAF flow dependency)
1285    o in initialise_varia, moved call packages_init_variables
1286      before convective_adjustment_init
1287      (corresponding adjustment of TAF tape initialisation).
1288    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
1289    
1290    checkpoint45a_post
1291    o compute Rho over the whole domain (extend iMin,jMin indices)
1292    o specific exchange for X-slice domain (case Ny=1)
1293    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
1294    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
1295    
1296    checkpoint44h_post = checkpoint45
1297    o Fix to restore differentiability:
1298      place at which packages_init_variables is called in
1299      initialise_varia is crucial for reverse control flow.
1300    o modifications in GMRedi to enable stable adjoint
1301      (corresponding modif's in thermodynamics, dynamics)
1302    o added missing hook for sponge layer code in external_forcing
1303    o modified test cost functions
1304    o storing in gad_advection (plus removal of write(0,*)!
1305    o missing headers TR1.h added in convective_adjustment routines
1306    o errorMessageUnit set non-equal zero in eeboot
1307      (conflict on some platforms, e.g. IBM SP3)
1308    o modified carbon verif.
1309    
1310    checkpoint44h_pre
1311    o vertical grid option: allow to put the Interface at the middle between
1312      2 cell-centers ; replace delZ in pkg/kpp by drF.
1313    o GM Advective form: Tracers are advected using the residual transport (=
1314      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
1315    
1316    checkpoint44g_post
1317    o fix surface correction term in multiDimAdvection (affects plume_on_slope
1318      results) ; ifdef missing in thermodynamics.F
1319    
1320    checkpoint44f_pre,checkpoint44f_post
1321    o added PTRACERS package
1322      This allows an arbitrary number of passive tracers to be integrated
1323      forward simultaneously with the dynamicaly model.
1324      + Implemented so far:
1325        - basic forward algorithm (time-stepping, advection, diffusion, convection)
1326        - I/O and checkpointing
1327        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
1328      + Not implemented so far:
1329        - KPP
1330        - OBCS
1331      + No specific example supplied (yet) but global_ocean.90x40x15 has the
1332        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
1333        line in data.pkg.
1334      + This package is disabled by default since it increases storage.
1335    
1336    
1337    o testscript: added -cleanup option
1338    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
1339                 b) enable to filter 2D fields.
1340    
1341    checkpoint44e_pre,post
1342    o re-wrote convective adjustment to use pre-calculated weights
1343      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
1344      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
1345      Original calls to convect() still in place.
1346    
1347    chkpt44d_pre,post
1348    o added missing EXCLUDE_MONITOR flags
1349    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
1350      (incompatible typ in MIN/MAX expressions caused problems
1351      on IBM SP3)
1352    o in genmake added variable MAKEDEPEND
1353      plus resetting for case SunOS
1354    o added timer_stats.c routine for IBM SP3
1355    o removed variables in dynamics
1356    !!! I forgot to create tag chkpt44d_pre !!!
1357    !!! But chkpt44d_pre = chkpt44c_post    !!!
1358    
1359    o real fresh water flux implemented with non-linear free-surface.
1360    
1361    chkpt44c_pre,post
1362    o few fix (mask in shap_s2, EmPmR in external_field_load,
1363      USE_NATURAL_BCS in solve_for_P);
1364    o add arguments myIter & myTime to S/R obcs_calc & solve_for_P
1365    
1366    checkpoint44b_pre/_post
1367    o merge of relevant stuff from the ecco-branch:
1368      - genmake: removed $S64 overwrite for case SunOS
1369      - pkg/exf: update and corrections for field swapping and obcs
1370      - pkg/ecco: parameter lists for the_model_main, the_main_loop
1371                  harmonized between ECCO and MITgcm
1372      - pkg/autodiff: added flow directives for obcs, mdsio_gl_slice
1373                      updated checkpointing_lev... lists for obcs
1374      - model/src: minor changes in forward_step, plot_field
1375                   added directive for divided adjoint in the_main_loop
1376      - pkg/mdsio: added mdsio_gl_slice
1377    
1378    o check parameters & config (chkpt44a_pre,post)
1379    o OBC and NonLin_FrSurf.
1380    
1381    checkpoint44
1382    o fix bug in mom_vi_del2uv
1383    o select when filters are applied ; add options to zonal_filter (data.zonfilt)
1384    o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
1385    o update AIM experiments (NCEP input files)
1386    o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
1387    o added some stuff for AD
1388    
1389    checkpoint43
1390    o added two new advection tests
1391    o added global 4x4 degree ocean test
1392    o added test of H&S94 with free surface on cube
1393    o some final mods for gradient check, adjoint,...
1394    
1395    checkpoint42
1396      Fixed AD-related problems:
1397    o Store directives up-to-date with re-arranged Adams-Bashforth
1398      (mainly thermodynamics.F)
1399    o New store directives for multi-dim. advection schemes
1400      * new CPP flag ALLOW_MULTI_DIM_ADVECTION
1401      * new common block and key passkey
1402      (mainly gad_advection.F)
1403    o Modified store directives for split of dynamics/thermodynamics
1404      for the case ALLOW_KPP
1405    o Cleaned argument list for timestep_tracer.F
1406    
1407    checkpoint41
1408    o re-formatted/added comments in prologues of key subroutines
1409      to work with protex
1410    
1411    checkpoint40
1412    o moved calc_gs, calc_gt and calc_tr1 back to model/src
1413    o added FLT (floats) package from Arne along with demo. experiment
1414    o re-arranged Adams-Bashforth scheme for tracers to allow easier
1415      implementation of forward-in-time forcing terms
1416    o more mods for non-linear free-surface including new variable
1417    o modified multi-dim method to work on cube
1418    o bug fix in KPP (from DM)
1419    
1420    checkpoint40pre9
1421    o added DST advection schemes
1422    o fix MPI bug on SGI's
1423    o modifications for non-linear free-surface
1424    o fixed conditionals for fixed flow/passive tracer only mode
1425    o added tension/strain form of stress tensor
1426    o changes to commenting of arguments for TAF/TAMC
1427    o added/updated many matlab scripts
1428    o added multi-dimensional advection method for tracers
1429      
1430    checkpoint40pre8
1431    o new package rw/
1432      Added method for dumping intermediate local arrays:
1433      mdsio_writetile - same as mdsio_writefield except works from inside
1434                        bi,bj loop
1435      mdsio_writelocal - same as mdsio_writetile except works for local
1436                         arrays
1437      write_local_r? - higher-level wrapper for mdsio_writelocal
1438      Controlled by diagFreq. Defaults to zero (ie. no dumps)
1439      Example given at end of mom_vecinv.F that dumps some local arrays.
1440    o replaced calc_mom_rhs.F by mom_fluxform.F/mom_vecinc.F to
1441      control flux-form versus vector invariant code.
1442      Switch is runtime flag vectorInvariantMomentum (defaults to false)
1443      or genmake -DISABLE ...
1444    o TAMC-related update to cope with mom_fluxform.F/mom_vecinc.F
1445      (additional storing is now needed for case vecinv;
1446      currently nothing implemented to switch this storing off
1447      in case fluxform is used since no CPP flag available).
1448    
1449    checkpoint40pre7
1450    o bug fix in dynamics.F
1451      calc_viscosity called before k=1,Nr loop.
1452    o added some #ifdef's ALLOW_PASSIVE_TRACER
1453    o cleaned initialisations in ctrl_map_ini
1454      related to TAF
1455    
1456    checkpoint40pre6
1457    o split dynamics into thermodynamics & dynamics
1458    o corresponding split of calc_diffusivity into
1459      calc_diffusivity, calc_viscosity
1460      (kpp_calc_diff, kpp_calc_visc).
1461    o Added diffkr, kapgm to control variables
1462    o bug fix in gmredi_slope_limit for ldd97
1463    
1464    checkpoint40pre5
1465    o proper initialization of Adams-Bashforth time stepping
1466      + uses forward step for very first step of model (iter=0)
1467    o re-generated *all* output since almost all output is modified by this
1468      change (sorry but we've been putting this one off for about 2 years)
1469      + natl_box, aim.5l_Equatorial_Channel and aim.5l_zon-ave were
1470        *not* regenerated since they are already out of date and I don't
1471        want to create the impression that they are suddenly working.
1472    o removed KAP stuff for DEC's
1473    o modified/added many .cvsignore files in */code and */input
1474    o added new expt "solid-body.cs-32x32x1"
1475      + this uses an alternative form of ini_curvilinear_grid.F which
1476        is not necessarily any better than the current one...
1477    
1478    checkpoint40pre4
1479    o added re-initialisations of utrans,vtrans,rtrans in
1480      calc_common_factors which are crucial for TAF.
1481    o extended iMin,jMin range for calc_common_factors,
1482      calc_diffusivity
1483    o added option ALLOW_PASSIVE_TRACER
1484    o a few minor updates and fixes
1485    
1486    checkpoint40pre3
1487    o created calc_gtr1.F for gad package
1488    o split the_main_loop and re-introduced forward_step
1489    o some recomputations of nIter0 for TAMC
1490    
1491    checkpoint40pre2
1492    o Updated to latest branch of AJA, JMC
1493    o Added gradient check package
1494    o Added routines for passive tracer handling
1495    o Added carbon sequestration sensitivity experiment
1496    
1497    checkpoint39
1498     o Modifications and fixes to support TAMC
1499       (mainly missing or wrong directives)
1500     o Corrected common blocks when fooling TAMC to produce adjoint I/O
1501       in addummy_in_stepping
1502     o Updated verification/vero/ (bug fixes in code/, correct pickups in input/)
1503     o Enabled "sliced" (xz-,yz-) exchanges, needed for obcs.
1504     o Included following packages:
1505       cal: calendar
1506       exf: external forcing
1507       ecco: essential routines to control use of cal, exf
1508             (NB: this is not the full ECCO environment)
1509     o disabled some packages by default in genmake
1510    
1511    checkpoint38
1512     o see notes_c37_adj.txt
1513     o corrected wrong layer index in external_forcing_t
1514     o replaced the_main_loop/forward_step by the_main_loop
1515     o removed forceoutput from write_state
1516       (replaced criteria for initial/final state)
1517     o added runtime flag for pre-C35 pickups: usePickupBeforeC35
1518    
1519    checkpoint37
1520     o mdsio.F routine split and packaged in pkg/mdsio
1521       (mdsio.F and mdsio_gl.F still exist in eesupp/src but are not
1522        used unless genmake -disable=mdsio)
1523     o allow a more precise surface-geopotential gradient for the atmosphere
1524       taking into account the change in space of Alpha (=1/rho) at the surface.
1525     o variable "etaN" (replace cg2d_x) is the surface R-anomaly [r unit]
1526       (ocean: sea surface height [m] / atmos: surface pressure anomaly [Pa])
1527     o Change units: Phi_Hydrostatic (=phiHyd), Phi_Surface(=cg2d_x) and
1528       Phi_NonHydrostatic (=cg3d_x), all have now the dimension of a potential
1529       [m2/s2] (pressure/rhoConst in the ocean ; Geo-Potential in the atmosphere).
1530     o Time-Average diagnostics defined as a pseudo package "timeave".
1531     o pickup files : old pickup (before c35) did not work with new code (c35
1532       and after) unless activating 2 commented lines in initialise-varia.
1533     o Non-Hydrostatic pickup file Pb fixed.
1534     o bug with Rigid-lid version (since c35) fixed.  
1535    
1536    checkpoint36
1537     o implement Crank-Nickelson barotropic time-stepping
1538     o recover Time-Average diagnostics
1539     o fix Pb in checkpoint (PR#19)
1540     o AIM become a standard package ; clean unused CPP_kees
1541    
1542    checkpoint35
1543     o subtantial rewrite of dynamics.f
1544     o allows staggered time-stepping
1545     o packaged obcs, aim (Atmospheric Physics), zonal_filt, shap_filt
1546     o added bottom drag (linear + quadratic)
1547    
1548    checkpoint34
1549     o Modified exchange routines for correct reverse simulation.
1550     o Added verification output to comply with bug fix in impldiff.F
1551       as of c33 (exp2, natl_box).
1552     o Corrected store directives in dynamics.F
1553     o Corrected array boundaries in impldiff.F
1554     o Corrected array dimensions in gmredi.
1555       Added temporary scalars to avoid storage by TAMC (gmredi, kpp).
1556     o Added routine GLOBAL_SUM_INT to global_sum.F
1557     o Added mdsio_gl.F for ECCO purposes.
1558    
1559    checkpoint33
1560     o Fixed bug in lower BC in impldiff.F
1561     o Fixed confusion about units of forcing arrays in FFIELDS.h
1562       namely Fu,Fv,Qnet,Qsw,EmPmR:
1563       - Removed verification/natl_box/code/external_fields_scale.F
1564         (did not differ from that in model/src)
1565       - Changed units of fu,fv,Qnet,Qsw,EmPmR back to proper units
1566         (see FFIELDS.h for description)
1567       - Scale fu,fv,Qnet,Qsw,EmPmR when used in external_forcing_surf.F,
1568         kpp_calc.F and kpp_transport_t.F
1569       - Removed model/src/external_fields_scale.F and calls to it
1570       - verification/natl_box uses flux data with "atmospheric" sign so
1571         a special version of external_fields_load.F is used to
1572         change the data as it's read in. This way, the arrays
1573         have the right units and signs at all times tha a user could
1574         possibly use them.
1575     o Corrected genmake to delete a temporary file during configuration
1576    
1577    checkpoint32
1578     o Scaling of forcing fields moved from external_forcing.F to
1579       external_fields_scale.F, called directly after loading fields.
1580     o Surface relaxation terms added to surface tendency fields in
1581       extra subroutine.
1582     o impldiff.F changed to avoid storing by TAMC of huge intermediate
1583       fields.
1584     o Changes in GMRedi to comply with packaging structure.
1585     o Modifications and bug fixes in KPP package.
1586     o Verification experiment for KPP added (verification/nat_box/)
1587    
1588    checkpoint31
1589     o Packages interface brought in line with defined standard
1590       -> new routines packages_...F
1591       -> changes in initialise_fixed.F, initialise_varia.F
1592       -> enables initialisation interface for ECCO package
1593     o Rescaling of external forcing fields immediately after read
1594       (removed from external_forcing.F)
1595       -> new: surface_fields_scale.F
1596       -> affects ini_foorcing.F, external_fields_load.F
1597     o Computation of surface tendencies before tendency updates.
1598       -> new: external_forcing_surf.F
1599     o Change of variable names useGMRedi, useKPP, useECCO
1600     o Further changes in dynamics.F, impldiff.F for TAMC
1601     o Tested for experiments 0, 2, 4.
1602       - not yet tested for GMRedi.
1603       - not yet tested for KPP.
1604    
1605    checkpoint30
1606     o Updates for OBCs
1607     o New experiment for test OBCs (internal_wave)
1608     o New output.txt in verification/exp4/results/
1609     o Updates for KPP: calculation of viscosity corrected, new variables
1610       kpp_dumpFreq and kpp_taveFreq
1611     o CPP'd calls to system routines for TARGET_CRAY_VECTOR (P.H.)
1612       and entry for T90 in genmake
1613    
1614    checkpoint29
1615     o packaged KPP and GM/Redi
1616    
1617  checkpoint28  checkpoint28
1618   o Corrected initialization of hFacMin for difference vertical coordinates   o Corrected initialization of hFacMin for difference vertical coordinates
1619   o Modified calculation of partial cell thickness to more robust algorithm   o Modified calculation of partial cell thickness to more robust algorithm

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