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revision 1.26 by adcroft, Mon Apr 10 14:41:52 2000 UTC revision 1.296 by heimbach, Fri May 14 21:15:08 2004 UTC
# Line 3  $Header$ Line 3  $Header$
3      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
4      ==============================      ==============================
5    
6    checkpoint53b_post
7    o Commiting new energy balance model to repository
8      * package is pkg/ebm
9      * verif. is verification/global_ocean_ebm
10      * references are in ebm_driver.F
11    C      * X. Wang, P. Stone and J. Marotzke, 1999:
12    C        Global thermohaline circulation. Part I:
13    C        Sensitivity to atmospheric moisture transport.
14    C        J. Climate 12(1), 71-82
15    C      * X. Wang, P. Stone and J. Marotzke, 1999:
16    C        Global thermohaline circulation. Part II:
17    C        Sensitivity with interactive transport.
18    C        J. Climate 12(1), 83-91
19    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
20    C        Destabilization of the thermohaline circulation
21    C        by atmospheric eddy transports.
22    C        J. Climate 7(12), 1870-1882
23    o Will need long integration testing.
24    checkpoint53b_pre
25    
26    o created pkg/mom_common in preparation for variable viscosity code
27    o renamed and split ini_mnc_io
28    o pkg/land: only liquid water can diffuse or run-off
29    o AIM using land: soil wetness availability account for snow
30    o added printMapIncludesZeros to EEPARMS namelist
31    
32    checkpoint53a_post
33    o restore TAMC compatiility for exf_constants.h
34      (no usage of _d in .h)
35    o Additional storing in KPP in an attempt to fix
36      TAMC problem with adjoint of KPP code.
37      (no success...)
38      Identical code works fine with TAF.
39    o Fixed verification/natl_box_adjoint experiments.
40      Initial conditions for Experiments 4 and 5 are now
41      set to "SEAICE_initialHEFF=0", which is more reasonable,
42      and hence gives results closer to that of Experiment 2.
43      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
44    
45    checkpoint53
46    o stable checkpoint with up to date adjoint
47      TLM tests only run for 1st grdchk at the moment. Its unclear if
48      this is a code problem or a problem with resetting code for g_
49      variables that is being autogenerated wrong.
50      Otherwise:
51       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
52       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
53         are both still in chaos following their security messes.
54    
55    checkpoint52n_post
56    o various build (mostly genmake2) changes including:
57      - ability to build/run more easily within Cygwin and MacOS X
58      - more complicated Makefiles with a stronger dependence on Gnu Make
59    o pkg/seaice modifications
60      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
61        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
62        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
63      - changed proxy for geostrophic velocity and updated
64        verification/lab_sea/results/* accordingly
65      - removed ADI dynamic solver from pkg/seaice
66      - replaced all occurrences of 1/CSTICE or 1/CSUICE
67        they caused a segmentation fault under certain circumstances
68      - removed unused field WATR
69    o bug fix in exf-package:
70      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
71         now reflect that.
72    o small fixes in the cal-package:
73      - set reference date to first of January for the 'model'-calendar
74      - failing of cal_CheckDate in cal_FullDate now actually results in a
75        warning
76    o small modifications in exf-package to increase flexibility:
77      - change climtempfreeze from a constant to a runtime parameter that
78        is specified in data.exf_clim (default = -1.9)
79      - introduce runtime parameter windstressmax (default = 2.0) that is
80        specified in data.exf
81    o fix in pkg/thsice:
82      - update Evap (Tsf changes) to be consistent with Latent heat flux
83      - maintain snow precipitation unchanged (even if Tsf >=0).
84     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
85    
86    checkpoint52m_post
87    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
88      this does not change any of the results, because myIter=0 in swfrac always
89      lead to jwtype=2 (the default anyway), but the call makes little sense
90      as a default
91    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
92    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
93      atmospheric model (AIM) to use it ; add a "slab ocean" component.
94    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
95    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
96    o extending useSingleCpuIO option to work with new exch2 I/O format
97      - old-style, missing-tile I/O is still accessible by defining CPP
98        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
99    o monitor package can write to NetCDF files and/or STDOUT
100    o fix re-definition bug in MNC_GRID_INIT_ALL()
101    o doc/api_reference added
102      - a framework for building an API Reference Manual using all
103        the "protex" comments embedded in the code
104      - see pkg/generic_advdiff, pkg/mnc for examples
105    o MNC:
106      - make myThid the last argument for all subroutines
107      - new default for the grid files: NO halos
108      - add useMNC and other run-time flags
109      - separate per-file-group handling of the unlimited dimension
110      - early initialization of MNC w/ flags read at the eeboot stage
111        and lookup tables set in initialize_fixed
112      - write all MNC output to a freshly-created directory
113    o thermodynamics sea-ice (thsice) is now tested with testreport.
114    o test exp. advect_cs: use the standard cs32 grid ; update output.
115    o Added functionality to grdchk:
116      pick global i,j,k position (or nearest wet) where to perform check.
117    
118    checkpoint52l_post
119    o new land formulation:
120      a) use ground enthalpy as prognostic variable to ensure exact
121         energy conservation.
122      b) account for water temperature and for latent heat of freezing
123         in all processes (rain, run-off, ground storage)
124      c) compute surface and ground temperature implicitly.
125    o aim_v23 modification for new land model:
126      a) Treat separately land / ocean / sea-ice surface fluxes
127         to allow implicit computation of land & sea-ice surface temp.
128      b) add snow precipitation.
129    checkpoint52l_pre
130    
131    o fix problem (when 1 tile is empty) in min/max monitor.
132    o fix bug in timeAve (u,vZetatave in common block)
133    o no restoring terms under ice for pkg/seaice
134    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
135    o bug fix for pkg/seaice pickups
136    o change MNC call locations and add coordinate attributes
137    o mask vorticity at the corner ; affects global_ocean.cs output
138    o fix ini_curvilinear_grid ; test CS experiments with mpi
139    o aim.5l_cs: modify sea-ice fraction input file ; update output
140    o exf: Adding simple range check routine for exf fields after read
141    
142    checkpoint52k_post
143    o removed top-level directory "diags"
144      - we migrated these functions to pkg/timeave a long time ago
145    o fixed bug introduced in pkg/monitor
146    o accuracy ctrlprec = 32 insuffient for gradient checks using
147      averaged fields (I/O via cost_averages)
148      -> use ctrl.h in active_file*.F to control I/O precision.
149    o paramter list of CALL ADTHE_MAIN_LOOP
150    o added initial do_the_model_io to ecco
151    o set all ...Freq to zero after cost_final
152      taveFreq, dumpFreq, pChkptFreq
153    o MAIN and ECCO differentiability restored
154    
155    checkpoint52j_post
156    o fix nchklev in tamc.h for global_ocean...
157    o Bringing flow and store directives up-to-date
158    o Really weird thing!
159      call do_the_model_io from the_main_loop with parameters
160      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
161      TAF places a faulty re-call of initialise_varia
162      after cost_final call which should not be there!
163    checkpoint52j_pre
164    
165    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
166      error messages
167    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
168    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
169      debug output
170    o modfied mdsio_writefield.F to handle non-global files under exch2
171    o update AIM Cubed-Sphere exp (aim.5l_cs):
172      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
173    o update AIM Equatorial Channel exp:
174      use standard aim_v23 pkg and change the SST fields to be more realistic.
175    o globalFile now works with exch2
176    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
177      mon_vort3.F to make exch2 friendly with >1 tile per cube face
178    o limit timeave output for hi-res integrations
179    
180    checkpoint52i_post
181    o removed CPP_EEOPTIONS.h from verification/*/code
182    o updated the tiling for global_ocean_pressure
183    checkpoint52i_pre
184    
185    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
186      the old pkg/aim).
187    
188    checkpoint52h_pre
189    o shortened offending lines in exch2_send_rx?.template
190    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
191    o genmake2: add build & execute test for NetCDF code
192    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
193      old grid files, moved CPP_EEMACROS.h to pkg/exch2
194    o added useSingleCPUIO flag to monitor.F and mon_out.F
195    o added temporary hack for sea-ice dynamics on the cube:
196      metric terms are ignored and it is assumed that
197      there is no sea-ice on cube faces 1, 2, 4, and 5.
198    
199    checkpoint52f_post
200    o added exch2 cube routines to pkg/exch2
201    o modified hs94.cs-32x32x5 to use it
202    o added new grid files to hs94.cs-32x32x5
203    checkpoint52f_pre
204    
205    checkpoint52e_post
206    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
207      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
208    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
209      to work with implicit vertical advection and AB ;
210    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
211    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
212     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
213    checkpoint52e_pre
214    
215    o fix bug in impldiff when Nr=1 or Nr=2.
216    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
217    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
218    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
219      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
220    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
221    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
222    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
223    
224    checkpoint52d_post
225    o re-tiled many expts to allow comparison in multi-processor mode
226      - updated output accordingly
227      - changed hs94.128x64x5 to use intial T from file rather than use the
228        random number generator
229    o add infrastructure in model routines for fizhi and gridalt packages
230    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
231    o changes to permit hi-res, cubed-sphere, configuration
232      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
233      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
234      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
235        of surface winds for the cube
236      (A verification experiment, based on global_ocean.cs32x15, but with
237       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
238       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
239       complete with example surface forcing files and matlab scripts to look
240       at the output and compare it with that of global_ocean.cs32x15.)
241    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
242       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
243       to conform to the common rule.
244    o check-in the first version of the coupler + interfaces for multi-components
245       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
246       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
247       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
248       - ocean and atmos. share the same horizontal grid (no interpolation).
249       - exchanges between component and coupler is done in forward_step
250    o new verification experiment, cpl_aim+ocn:
251       coupled ocean - AIM atmosphere on cs32 grid.
252    
253    checkpoint52d_pre
254    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
255    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
256    
257    checkpoint52c_post
258    o Fixing OPTIONS files for use of exf:
259      - ALLOW_ECCO not needed
260      - ECCO_CPPOPTIONS.h should not be included from
261        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
262        as has been the case in the past
263      - All cal/exf related options are currently set in
264        single header file. Should remain so until we
265        agree on a consistent new policy.
266    o Removed all CPP options for cal package.
267      cal has no more CPP options.
268    o modified STOREs in GAD_ADVECTION
269    o corrected key comp. for passkey
270    
271    checkpoint52b_post
272    o new version: "thsice" of thermodynamic sea-ice pkg:
273     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
274     - modify fluxes but do not change theta directly;
275     - light cleaning of bulk_force pkg (still needed with thsice).
276     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
277       + output_thsice.txt to test thsice & bulk_force pkgs.
278    o put back grid & coriolis monitor output.
279    checkpoint52b_pre
280    
281    o call "do_the_model_io" at the beginning (=> dump initial state)
282    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
283    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
284      (need info on NUMBER_OF_PTRACERS)
285    o missing PTRACERS headers in some routines
286    o default tamc.h in pkg/autodiff supposed to crash
287      to ensure proper customization
288    
289    checkpoint52a_post
290    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
291      - moved surfaceTendencyTice from pkg/seaice to main code
292      - subroutine FREEZE_SURFACE now limits only surface temperature
293        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
294        => new output.txt for global_ocean.cs32x15 & global_with_exf
295      - keep the old version of FREEZE for backward compatibility;
296        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
297      - corresponding modifs for TAF directives
298    o added surface flux output variables to TIMEAVE_STATVARS
299    o time-averaged output for pkg/ptracers
300    o fix problem with ECCO-related divided adjoint
301      snapshot file was missing some ad-variables,
302      but no warning issued by TAF
303    
304    checkpoint52a_pre
305    o some bug fixes for #undef REAL4_IS_SLOW
306    
307    checkpoint52 = ecco_c52_e35
308    o after testing adjoints of checkpoint51u_post
309    
310    checkpoint51u_post
311    o this is the post-merge tag of the ecco-branch
312      (needs another clean checkout and re-testing)
313    o various natl_box_adjoint configs and results
314      but no input fields
315    o obcs adjoint not yet merged!
316    o adding ECCO global 1x1 and 2x2 degree configs
317    o updated/extended some store directives for seaice
318    o pkg/ecco now containes ecco-specific part of cost function
319    o top level routines the_main_loop, forward_step
320      supersede those in model/src/
321      previous input data.cost now in data.ecco
322      (new namelist ecco_cost_nml)
323    o in ctrl/ cleaned some cross-dependencies and updated CPP options
324    
325    checkpoint51t_post
326    o this is the pre-merge tag of the ecco-branch
327    
328    checkpoint51s_post
329    o cleanup: removed various obsolete #define-s
330    o pkg/grdchk
331      - renamed 'ph-grd 3' to 'grad-res'
332      - merged from ecco-branch
333        (remaining bug fixes for obcs gradient checks)
334      - additional high-precision output for testreport
335        (grep for 'precision_grdchk_result')
336    
337    checkpoint51r_post
338    o cleaned up or removed CPP_OPTIONS.h files
339    o updated results for some of the tests to reflect the new
340      optfiles (-ieee: -O0 instead of -O3)
341    
342    checkpoint51q_post
343    o cd_code:
344      - moved cd_scheme.F -> cd_code_scheme.F
345      - separate read_checkpoint from cd_code_ini_vars.F
346      - separated cd_code part from write_checkpoint
347      - updated AD_SOURCE, generated .flow
348      - added CD_CODE_VARS.h to the_main_loop
349      - Moving cd_code specific store dir.s to pkg/cd_code
350    o ctrl package totally restructured
351      - pack/unpack now optional and decoupled from
352        xx_/adxx_ I/O
353      - ctrl_pack/unpack cleaned
354        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
355      - confined inclusion of AD_CONFIG.h to where necessary.
356    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
357    
358    checkpoint51p_post
359    o create initial cd_code package
360      - WARNING: the initialization of fields within packages
361        is broken because INI_FIELDS (where READ_CHECKPOINT is
362        called) is called *before* PACKAGES_INIT_VARIABLES.
363        This seems to be backwards since
364        1) its important to initially zero the entire field including
365           the "halo" region
366        2) zeroing needs to be done *before* reading pickup info
367           and the pickup call might or might not happen in any
368           particular run
369      - this needs an overhaul for R2
370    o cleanup verification/*/code/GMREDI_OPTIONS.h
371    o cleanup testreport
372    
373    checkpoint51o_post
374    o bringing AD-related verif's up to date with genmake2
375      - carbon/
376      - global_ocean.90x40x15/
377      - hs.94.1x64x5/
378      - (front_relax/ )
379    o (more) consistent directory structure for AD-related verif.'s
380    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
381    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
382    o bug fix in find_alpha.F for MDJWF:
383      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
384        change rho -> rho-rhoConst
385      - replace call find_rho to find_rhonum
386    o initialisation of rFlx extended to full array (required by TAF)
387      and shifted to thermodynamics
388    o removed PTRACERS.h in ptracers routine
389    o added surfacetendencyPtr to S/R parameter list pracers_forcing
390    o Correcting initialisations for fVerU, fVerV.
391    o helping TAF to recognize dependency on kUp for
392      fVerU, fVerV
393    o Replacing delZ by delR in pkg/ctrl/
394    checkpoint51o_pre
395    
396    o undid all of cp51 pending some cleanups and discussion
397    o added the [#include "AD_CONFIG.h"] statement to all files that need
398       it for adjoint/tl #defines
399     o re-worked the build logic in genmake2 to support AD_CONFIG.h
400     o removed tools/genmake since it no longer works
401    
402    checkpoint51n_post
403    o modifications to make FREEZE flux visible to pkg/kpp
404      - moved surfaceTendencyTice from pkg/seaice to main code
405      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
406      - subroutine FREEZE now limits only surface temperature
407        (this means new output.txt for global_ocean.90x40x15,
408         global_ocean.cs32x15, and global_with_exf)
409    o added surface flux output variables to TIMEAVE_STATVARS
410    
411    checkpoint51n_pre
412    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
413    o added [#include "AD_CONFIG.h"] to all files that use the following
414      defines:
415      - ALLOW_ADJOINT_RUN
416      - ALLOW_TANGENTLINEAR_RUN
417      - ALLOW_ECCO_OPTIMIZATION
418    
419    checkpoint51m_post
420    o incorporating changes to get TAMC/TAF working in genmake2
421      - added new TAMC/TAF targets to the Makefile
422      - various cleanups related to package handling
423      - these changes should have no impact on the forward model
424    
425    checkpoint51l_post
426    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
427     - faster algorithm for cal_addtime.F
428     - higher precision arithmetic, where needed
429     - pkg/exf *startdate variables changed from calendar date to
430       model integration time
431    
432    checkpoint51l_pre
433    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
434    o enable to apply restoring on S & T only in a latitude band.
435    o update output (external_forcing_surf modif. change truncation errors)
436       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
437    
438    checkpoint51k_post
439    o change default to: useNHMTerms=.FALSE.
440     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
441       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
442     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
443        exp1, ideal_2D_oce
444     - change data file of oceanic exp (leave the results unchanged for now)
445       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
446    o set gravitySign automatically according to the vertical coordinate used
447      (and change sign: back to "logical" value: +1 when R increases downward)
448    o added an include barrier to the default CPP_OPTIONS.h and
449      removed the #include "PACKAGES_CONFIG.h" from it
450    o fix a bug in mom_fluxform (from chk51j_post)
451    
452    checkpoint51j_post
453    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
454    o adjusted some flow directives (dynamics, thermodynamics)
455    o added cubed-sphere case to test cost function
456    o heckpoint_lev?_directives.h now include
457      pkg-specific directives, whenever those are enabled.
458    o Moving pkg-specific flow directives to corresponding pkg
459      Moving pkg-specific differentiation list to corresponding pkg
460      Moving pkg-specific checkpoint-lev storing to corresponding pkg
461      ---> conventions are
462           - pkg_ad.flow
463           - pkg_ad_diff.list
464           - pkg_ad_check_lev?_dir.h
465    
466    checkpoint51i_post
467    o merge of the branch-genmake2
468      - knowingly breaks the older genmake
469      - automatic generation of all ALLOW_${PKG_NAME} defines
470      - new testreport supersedes older testscript
471    o large number of package inclusion and header cleanups
472    checkpoint51i_pre
473    
474    o new output for adjoin of global ocean vector invariant
475    o fix for checkpoint of thermodynamic seaice and bulk_force
476    o Steph gchem various cleanups
477    
478    checkpoint 51h_pre
479    o fixed some single quotes
480    o modify gchem pkg to be more versatile
481    o modifications to clean up dic pkg
482    o add pkg/cfc
483    
484    checkpoint51g_post
485    o provide links for ARPACK and ADM*TLM
486    o start removing verification/vero/
487    o update AD-related stuff
488      (in particular some IF-statements in model/src/ routines)
489    o adding to verification/global_ocean.90x40x15/ adjoint of
490      vector invariant setup
491    
492    checkpoint51f_post
493    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
494    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
495      of tracer Green's fucntions for ocean inversion project.
496    
497    checkpoint51f_pre
498    o Added on-the-fly spatial interpolation capability
499        "USE_EXF_INTERPOLATION" to pkg/exf.
500      - This is a temporary Cartesian-grid hack until
501        the super-duper ESMF coupler becomes available.
502      - See verification/global_with_exf/README for usage example.
503      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
504        flags and modified pkg/seaice accordingly.
505    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
506        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
507        non-local transport term.
508    
509    checkpoint51e_post
510    o pkg/mom_vecinv:
511      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
512      - add time-ave diagnostic of vorticity advection.
513    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
514    o atmospheric geopotential: - include water vapor effect;
515                                - use p^kappa in p* scaling.
516    o land pkg: read initial state from files.
517    o AIM : add stratospheric drag in the upper level
518    
519    checkpoint51d_post
520    o change function ILNBLNK (=> last non-blank char.) to return zero
521      (instead of the string length) when the string. char is empty
522    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
523    o modif's to restore TAMC compatibility
524      - avoid "_d" constructs in PARAMETER declarations
525      - avoid interrupting lines by comment lines
526    o Use cluster local disks for purely local I/O
527      vs. globally visible disks needed for ctrl stuff
528      (merged from ecco-branch)
529      - new active_file_loc... and mdsio_..._loc routines
530      - affected packages: autodiff, ctrl, grdchk, mdsio
531    
532    checkpoint51c_post
533    o introducing integer flag debugLevel
534      - debLevZero: suppress all output
535      - debLevA: standard
536      - debLevB: equivalent to current debugMode=.TRUE.
537    o introducing pathname variable mdsioLocalDir for mdsio
538      that can be specified at runtime
539      (relevant for cluster I/O to local disk)
540    `
541    >>>checkpoint51b_post
542    adjoint of ptracers
543    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
544    o extended state in checkpoint_lev?, etc.
545    o alternative ctrl/cost with tr1 or ptracer
546    o new comlev1_bibj_ptracers
547    o new ptracers.flow
548    o made ptracers_forcing same as external_forcing_s
549    o added verification for adjoint with ptracers
550      - adm. grdchk fail so far
551      - tlm. grdchk OK
552      - checked tapelev/comlev recomputations: OK
553    <<<checkpoint51b_pre
554    
555    checkpoint51a_post
556    o added code for biogeochemistry package
557      - new pkgs: dic, gchem
558      - new subroutine in ptracers
559    o modify code for biogeo packages
560      - in model/src and pkg/ptracers
561    
562    checkpoint51
563    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
564      - autodiff, ctrl, exf, grdchk, seaice
565      kept separate packages
566      - cost, ecco, obcs
567    o updating verification/internal_wave, verification/lab_sea
568      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
569    
570    checkpoint50i_post
571    o Preparing next differentiable checkpoint and sync
572      of MAIN vs. ecco-branch
573      - 1st step: this one is differentiable
574      - 2nd step: next(! not this) checkpoint will have updated packages
575                  from ecco-branch)
576    
577    checkpoint50h_post
578    o new package "land": provide surface BC for AIM.
579    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
580    o AIM: use true log-P extrapolation for near surface temp (= as in
581        F.Molteni paper) ; update aim.5l_cs output.
582    o New variable in PARM03 for more flexible pickups
583    o somewhat cleaned package initialisation sequence for
584      ctrl/ cost/ ecco/ in packages_... routines
585    
586    checkpoint50g_post
587    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
588      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
589      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
590        made the default because of faster convergence than ADI
591    
592    checkpoint50f_post
593    o exf totally restructured
594      - replaced all exf_set_ routines by one generic exf_set_gen.F
595        and made sure it's still differentiable
596      - split exf_getffields.F into new exf_bulkformulae.F
597      - exf_inscal_/exf_outscal_ suffixes consistent with field names
598      - updated adjoint/makefile and relevant verif. accordingly
599    
600    checkpoint50f_pre
601     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
602          + change Evap over land. (update aim.5l_cs output)
603     o added missing .cvsignores and made uniform across expts
604     o changed configuration of tidal_basin_2d expt
605     o added pkg/debug functions for tracing code in fatal crashes
606     o tidied pkg/monitor to use MONITOR_OPTIONS.h
607     o new fn in pkg/monitor to stop model if solution grows too big
608     o removed lots of single quotes from comments
609    
610    checkpoint50e_post
611    o make KPP work with PTRACERS
612     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
613       nearly a copy of kpp_transport_s
614     - there is no analogue to SurfaceTendencyS, so I have to use
615       gPtr(of the surface layer) instead
616    o add a new platform SunFire+mpi (SunFire 15000) to genmake
617    checkpoint50e_pre
618    
619    checkpoint50d_post
620    o change kpp output from multiple-record state files to single-record state
621      files analogous to write_state.F
622    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
623      analogous to the cg2d-related output.
624    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
625      so that writing to internal file fn (with length 512) fails.
626    checkpoint50d_pre
627    
628    checkpoint50c_post
629    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
630    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
631    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
632    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
633    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
634    
635    checkpoint50c_pre
636    Merging from release1_p13:
637    o bug fix for pkg/seaice dynamic solver
638    o Added SEAICE_initialHEFF to pkg/seaice
639    
640    checkpoint50b_post
641    o store u*,v* in gU,V instead of in guNm1,gvNm1
642    o in order to put the momForcing out of the Adams-Bashforth:
643      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
644      to timestep.F
645    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
646    o re-generate output for highly sensitive test-exp:
647       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
648    
649    checkpoint50b_pre
650    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
651    o corrected CPP option mismatch in exf_Bulk... functions for case
652      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
653    
654    checkpoint50a_post
655    o Bug fix for merging between c50 and KPP.
656      ikey was passed from thermodynamics to kpp_calc via
657      common block rather than being recomputed in kpp_calc,
658      in contradiction with new key itdkey.
659      New key ikppkey created, and tamc.h headers updated.
660    
661    checkpoint50
662    - 2nd step of merge with ecco-branch:
663      merge changes in ecco-branch back into main trunk
664    - bug fix in find_alpha
665    - more storing in gmredi_calc_tensor.F, kpp_routines.F
666    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
667    - merged some sliced AD support routines
668    
669    checkpoint49
670    merged from ecco-branch:
671    o exf:
672      - Enable initialisation of forcing fields to constant
673        (runtime) values.
674      - in exf_getffields.F
675        Reduce i-/j-loop to interior domain, discarding overlaps.
676        That also fixes wrong TAF-key computations for key_1, key_2
677        with bulf formulae.
678      - exf_init.F modify #ifdef for exf_init_evap
679      - exf_getffieldrec.F, ctrl_getrec.F
680        The following INT-usages are not safe:
681          fldsecs  = int(fldsecs/fldperiod)*fldperiod
682          fldcount = int(fldsecs/fldperiod) + 1
683        and were modified.
684    o autodiff: checkpoint_lev...
685      - updated storing for bulk formulae (some arrays were missing)
686      - added state for seaice package
687      - synchronized with main branch
688    o DIVA:
689      Modif.s in
690      - the_main_loop.F
691      - the_model_main.F
692      and added cost_final_restore.F cost_final_store.F
693      o With these changes, it is possible to fully separate
694        the first forward run to compute the cost function (mdthe_main_loop)
695        and adjoint runs over individual DIVA intervals (adthe_main_loop)
696        into separate model executions.
697        This enables better tuning of DIVA to given queue sizes.
698      o Loss of cost function value in consecutive DIVA runs is
699        fixed by storing to 'costfinal' file.
700      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
701        beginning/end of adjoint integration is accounted for.
702      The current changes apply to TAF-1.4.26.
703      TAF has one remaining bug, requiring one manual change
704      (see MITgcm manual).
705    o cal: synchronized between MAIN and ecco-branch
706    
707    checkpoint48i_post
708    o Changes to restore differentiability of code w.r.t. previous tag
709      (mostly adding new routines to make list and replacing
710      pressure by totPhiHyd).
711    o Updated and merged grdchk package
712      - has both ADM and TLM checks
713      - works for single- and multi-proc.
714      - output cleaned
715      - worked successfully for parallel DIVA
716    o genmake:
717      - Adding -platform=SP4
718      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
719    o Modif. for DIVA:
720      ctrl_unpack should not be called in intermediate DIVA interval.
721      (similar thing would apply for active files such as
722      tbar, sbar, psbar, which should not be reinitialised;
723      only relevant for ecco-branch)
724    
725    checkpoint48h_post
726    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
727    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
728    o Added SEAICE_initialHEFF to pkg/seaice
729    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
730    
731    checkpoint48g_post
732    --- EOS:
733    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
734      store total Potential in totPhyHyd for diagnostics & EOS.
735    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
736    --- Pressure/geopotential gradient:
737    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
738    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
739      ( changes results of global_ocean_pressure )
740    o NLFS + z-coord.: add eta*Rho' contribution.
741    o accurate phiHyd when using interface-W at the middle between 2 centers
742     ( changes results of ideal_2D_oce )
743    o includes r* 2nd term in potential gradient.
744    
745    checkpoint48f_post
746    Merging from release1_p12:
747    o Modifications for using pkg/exf with pkg/seaice
748      - improved description of the various forcing configurations
749      - added basic radiation bulk formulae to pkg/exf
750      - units/sign fix for evap computation in exf_getffields.F
751      - updated verification/global_with_exf/results/output.txt
752    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
753      (SBO) core products, including oceanic mass, center-of-mass,
754      angular, and bottom pressure (see pkg/sbo/README.sbo).
755    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
756      to avoid negative values in shallow regions.
757      - updated verification/natl_box/results/output.txt
758      - updated verification/lab_sea/results/output.txt
759    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
760    o Added useSingleCpuIO option (see PARAMS.h).
761    o Updated useSingleCpuIO option in mdsio_writefield.F to
762      work with multi-field files, e.g., for single-file pickup.
763    o pkg/seaice:
764      - bug fix in growth.F: QNET for no shortwave case
765      - added HeffFile for specifying initial sea-ice thickness
766      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
767    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
768      kpp_transport_t.F, forward_step.F, and the_main_loop.F
769    o pkg/seaice:
770      - adjoint-friendly modifications
771      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
772    
773    checkpoint48e_post
774    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
775    o dynamics: change definition of computational domain & adapt mom_fluxform
776      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
777    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
778        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
779        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
780        global_ocean.90x40x15 global_with_exf global_ocean_pressure
781        inverted_barometer solid-body.cs-32x32x1
782      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
783    
784    checkpoint48d_post
785    o in preparation for r*:
786     a) use pre-computed gradient of hydrostatic potential:
787        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
788     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
789        => affects results of glob_oce_pressure (different truncation error)  
790      update output.txt of ideal_2D_oce & global_ocean_pressure
791    
792    checkpoint48d_pre
793    o in preparation for r*:
794      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
795      pass the 2 comp. of the grad. as arguments to momentum S/R.
796      but for the moment, only used if it does not change the results.
797    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
798    
799    checkpoint48c_post
800    Modifications in treatment of initial flux forcing controls
801    to avoid extra storing of flux fields.
802    
803    checkpoint48c_pre
804    o Added tidal_basin_2d experiment (currently 1D!)
805    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
806    
807    checkpoint48b_post
808    o r* coordinate added in #ifdef NONLIN_FRSURF block.
809     (modification to pressure gradient not yet implemented)
810    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
811      (for U & V) that are used for vertical advection of momentum.
812    
813    checkpoint48a_post
814    o In preparation for r*, use temp. array to compute vertical transport
815       in flux-form momentum pkg. => change results of few test-exp.
816      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
817                        lab_sea, natl_box & plume_on_slope
818    
819    checkpoint48
820    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
821    
822    checkpoint47j_post
823    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
824    o moved adexch from forward_step to addummy_in_stepping
825    o added exch in ctrl_map_...
826    o aveFreq.=0. at end of cost_final to avoid overwrite in
827      reverse checkpointing loop
828    o Yet more changes in gmredi:
829      * adgmredi_calc_tensor
830        avoiding all recomputation of gmredi_slope_limit
831      * adgmredi_x/y/rtransport
832        added flag for excessive storing to avoid recomp. of
833        u/v/rtans, dTdx/y/z
834        -> this is not really necessary and very memory-consuming
835      * adgmredi_slope_psi:
836        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
837      * gmredi_slope_limit
838        re-activated full calculation of taperfct for case 'ac02'
839    o updating verification/ adjoints of carbon, global_ocean.90x40x15
840    
841    checkpoint47i_post
842    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
843    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
844      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
845    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
846    o gmredi: fix few bugs.
847    
848    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
849    This will be a good checkpoint to plug into the ecco-branch.
850    o few modif.'s to get latest version adjointed
851      (mainly kick out code in ini_linear_phisurf)
852    o modif's to run adjoint with exactConserv
853    o case GM_BOLUS_ADVEC should be cleaned
854      S/R gmredi_slope_psi should be cleaned
855    o verification/carbon now has exactConserv=.TRUE.
856    
857    checkpoint47g_post
858    o time-average AIM output: becomes independent from statvars time-average
859      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
860    o After TAF bug fix:
861      Tested adjoint of gmredi package.
862      Tests were done with checkpoint47 rather than with latest
863      checkpoint47f_post since the latter is broken for the adjoint
864      verification/carbon/ contains both ADM and TLM gradient checks.
865    Here they are, before they get changed/lost/stolen.
866    Mostly modif.'s to fix numerical sensitivities.
867    Gradient checks OK for
868    - GM_taper_scheme:
869      * clipping
870      * ac02
871      * linear
872      * glw91
873      * dm95
874      * ldd97
875    - GMREDI_OPTIONS:
876      * GM_VISBECK_VARIABLE_K
877      * GM_NON_UNITY_DIAGONAL
878      * GM_EXTRA_DIAGONAL
879      * GM_BOLUS_ADVEC
880    in conjunction with data.gmredi parameters to be checked in
881    in a few minutes under verification/carbon/code/
882    
883    checkpoint47f_post
884    Merging from release1_p10:
885    o modifications for using pkg/exf with pkg/seaice
886      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
887        and SEAICE_EXTERNAL_FLUXES
888      - pkg/exf CPP options EXF_READ_EVAP and
889        EXF_NO_BULK_COMPUTATIONS
890      - usage examples are Experiments 8 and 9 in
891        verification/lab_sea/README
892      - verification/lab_sea default experiment now uses
893        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
894    
895    checkpoint47e_post
896    o created a tag prior to creating a branch
897    
898    checkpoint47d_post
899    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
900      at the bottom boundary had an erroneous half slip boundary condition
901    o added bottom drag and no slip boundary condition capabilities to
902      oceanic pressure coordinates code
903    o added new verification experiment global_ocean_pressure, this experiment is
904      also described in the tutorial section of the manual
905    checkpoint47d_pre
906    
907    checkpoint47c_post
908    o Added a verification experiment for a global cubed-sphere ocean run
909      -  verification/global_ocean.cubed32x32x30
910      -  uses pkg/therm_seaice and pkg/bulk_forcing
911    
912    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
913    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
914      when using P-coordinate; only implemented for atmospheric config.
915    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
916      NOTES: requires option NONLIN_FRSURF to be "#define".
917    o update advect_xz/results/output.txt (left from checkpoint44g_post)
918    
919    checkpoint47b_post
920    Merging from release1_p9:
921    o pkg/seaice
922      - removed GOTO's and added taf directives
923      - double precision constants to reduce the g77 (Linux)
924        to F77 (SGI) differences reported in release1_p8
925    o tools/genmake
926      - added SGI options
927    o verification/testscript
928      - updated to that of checkpoint47a_post
929    o verification/global_ocean.90x40x15/input/eedata
930      - modified for SGI f77 compatibility
931    o verification/lab_sea
932      - added description of sea-ice model
933      - added missing matlab routines
934      - added test of thermodynamics parallelization
935    
936    checkpoint47a_post
937    o new pkg: aim_v23
938     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
939       for now, keep the same surface forcing as before.
940     - Part-Cell implemented into AIM; check that Heat & Water are conserved
941     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
942     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
943    o add diagnostic of surface correction term in monitor output
944    
945    o bulk_force and therm_seaice
946    - Two packages:  bulk_force (Bulk forcing)
947      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
948    - Earlier integration from Stephaine Dutkiewicz
949      and Patrick Heimbach.
950    - Two ifdef statements for compile time,
951       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
952    
953    checkpoint47
954    differentiable version of checkpoint46n_post
955    o bug fix in quasihydrostaticterms
956    o * "clean" adjoint code (in terms of extensive recomputations)
957        can now be obtained for all GMREDI options (i.e. for
958        - GM_VISBECK_VARIABLE_K
959        - GM_NON_UNITY_DIAGONAL
960        - GM_EXTRA_DIAGONAL
961        - GM_BOLUS_ADVEC )
962      * However, wrong gradient check problem remains unsolved.
963      * New CPP options have been introduced for different
964        tapering schemes
965    o external_fields_load now part of differentiation list
966    o pressure needs multiple storing;
967      would be nice to have store_pressure at beginning or
968      end of forward_step, e.g. by having phiHyd global (5-dim.)
969      (NB: pressure is needed for certain cases in find_rho,
970      which is also invoked through convective_adjustment).
971    o recomputations in find_rho for cases
972     'JMD95'/'UNESCO' or 'MDJWF' are OK.
973    o #define ATMOSPHERIC_LOADING should be differentiable
974    o ini_forcing shifted to begining of initialise_varia
975    o Incorporating QNVS line search routines into MITgcm
976      (this is separate code, and therefore not under pkg)
977      lsopt/, optim/
978    o Updated verification/carbon/
979      - #define GM_VISBECK_VARIABLE_K
980      - GM_taper_scheme    = 'ldd97'    
981    
982    checkpoint46n_post
983    Merging from release1_p8:
984    o verification/natl_box:
985      updating new external_fields_load routine
986    o New package: pkg/seaice
987      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
988      The sea-ice code is based on Hibler (1979-1980).
989      Two sea-ice dynamic solvers, ADI and LSR, are included.
990      In addition to computing prognostic sea-ice variables and diagnosing
991      the forcing/external data fields that drive the ocean model,
992      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
993      The implied surface heat flux is then stored in variable
994      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
995      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
996      non-local transport term.  Because this call precedes model
997      thermodynamics, temperature under sea-ice may not be "exactly" at
998      the freezing point by the time theta is dumped or time-averaged.
999      N.B.: fairly large differences in accuracy occur across
1000            different platforms/compilers; comparison between
1001            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
1002            generated output gives:
1003       T           S           U           V
1004      C D M    c        m  s        m  s        m  s        m  s
1005      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
1006      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
1007      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
1008    
1009      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
1010    o GAD:
1011      - generated new common blocks to account for call of
1012        same gad routines with differing traceridentities
1013        (needed to modify tracerIdentity indices in GAD.h)
1014      - generated separate common blocks for case useCubedSphereExchange
1015        (Department of Futurology)
1016      - parameter lists to gmredi_?transport: added tracerIdentity
1017      - added new key indices to tamc.h
1018    o external_fields_load:
1019      - added this routine to TAF list
1020      - needed to make some common blocks global and additional storing
1021        along the same lines as exf package (checkpoint_lev?_directives.h)
1022    o exf:
1023      updated external forcing package
1024      - bug fixes carried over from ecco-branch
1025        (missing OBCS_OPTIONS.h in two routines)
1026      - enable easy to use "no forcing".
1027      - added exf I/O for atmospheric loading
1028      - added exf I/O for runoff data
1029      - transfered scaling between exf <-> MITgcm to exf namelist
1030    o Adding new verification experiment global_with_exf.
1031      This verification experiment is almost identical to the
1032      global_ocean.90x40x15 experiment, except that it uses
1033      the exf (and cal) package instead of the
1034      external_fields_load routine (cf README file).
1035    
1036    checkpoint46m_post
1037    o modified testscript to return -- when there are no lines of "%MON" output
1038    o added new flag "quasiHydrostatic" for QH mode
1039      and new routine quasihydrostaticterms()
1040    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
1041      New routine: mom_u_coriolis_nh()
1042    o fixed sign of non-hydrostatic metric terms in u and v equations.
1043      Depend on correct sign of gravitySign.
1044    o added work.pc* to .cvsignore in aim directories using ifc
1045    o introduced flag for controllin non-hydrostatic metric terms
1046    o removed gravitySign from PARM04
1047    o switched to g77/ifc from pgf77 in aim experiments
1048    
1049    checkpoint46l_post
1050    o made convective adjustment work with pressure coordinates:
1051     - changed the direction of k-loop in convective_adjustment.F for the
1052       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
1053     - adjusted the reference pressure k-index in convective_adjustment.F
1054     - adjusted the convection condition in convect.F (in analogy to
1055       calc_ivdc.F)
1056     - convective_adjustment no longer computes anything on the halos
1057     - removed the warnings about negative salinity from find_rho.F and
1058       find_alpha.F; instead the new routine look_for_neg_salinity, called
1059       at the beginning of find_rho, find_alpha, and find_beta, does a
1060       check of the entire slice, if CPP-option
1061       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
1062    checkpoint46l_pre
1063    
1064    checkpoint46k_post
1065    o fixed the verification/global_ocean.90x40x15 experiment:
1066     - new bathymetry (the world according to A., JMC, and M.)
1067     - new initial fields and forcing fields (*.bin files)
1068     - new POLY3.COEFFS (for the next release one should switch to a full
1069       equation of state: JMD95P or MDJWF)
1070     - fixed several errors and redundancies in the data file
1071     - experiment uses looped cells
1072     - added matlab directory with diagnostic scripts for plotting of output
1073    
1074    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
1075     - read AIM physics parameters from a file (data.aimphys)
1076     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
1077    
1078    checkpoint46j_post
1079    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
1080    o move wVel computation at the end of the time step, in S/R integr_continuity
1081    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
1082    o update timeave pkg for wVel diagnostic.
1083    checkpoint46j_pre
1084    
1085    checkpoint46i_post
1086    o Clean up AIM package (and keep the results unchanged):
1087      include CPP_OPTION and use IMPLICT NONE in all routines ;
1088      declare all the variables _RL ; use _d 0 for all numerical constants.
1089      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
1090    
1091    checkpoint46h_post
1092    o cleaned up the use of rhoNil and rhoConst.
1093      - rhoNil should only appear in the LINEAR equation of state, everywhere
1094        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
1095        and the dynamical equations are all divided by rhoConst
1096    o introduced new parameter rhoConstFresh, a reference density of fresh
1097      water, to remove the fresh water flux's dependence on rhoNil. The default
1098      value is 999.8 kg/m^3
1099    o cleanup up external_forcing.F and external_forcing_surf.F
1100      - can now be used by both OCEANIC and OCEANICP
1101    checkpoint46h_pre
1102    
1103     Added code to convert surface volume flux (fresh water) into
1104     a mass flux when using P coordinates in the ocean (OCEANICP).
1105     Note: It assumes you have set rho0=rhoConst=density of fresh water.
1106    
1107    checkpoint46g_post
1108    o Include a new diagnostic variable phiHydLow for the ocean model
1109      - in z-coordinates, it is the bottom pressure anomaly
1110      - in p-coordinates, it is the sea surface elevation
1111      - in both cases, these variable have global drift, reflecting the mass
1112        drift in z-coordinates and the volume drift in p-coordinates
1113      - included time averaging for phiHydLow, be aware of the drift!
1114    o depth-dependent computation of Bo_surf for pressure coordinates
1115      in the ocean (buoyancyRelation='OCEANICP')
1116      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
1117        Theta, Salinity, and Pressure in the parameter list. This routine is
1118        presently contained in find_rho.F. This routine does not give the
1119        correct density for 'POLY3', which would be a z-dependent reference
1120        density.
1121    o cleaned up find_rho
1122      - removed obsolete 'eqn' from the parameter list.
1123    o added two new verification experiments: gop and goz
1124      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
1125    checkpoint46g_pre
1126    
1127    checkpoint46f_post
1128    o Enable tangent linear (forward mode) gradient checks:
1129      - extended active file handling to g_... files
1130      - added TANGENT_SIMULATION to theSimulationMode
1131      - extended grdchk package accordingly
1132    o added tangent linear setup in verification/carbon/code_ftl
1133    o added adjoint setup in verification/front_relax/code_ad
1134    
1135    checkpoint46e_post
1136    o Added new equation of state -> MDJWF
1137      - EOS of McDougall et al., 2002, JAOT, submitted
1138      - caveat: the equation of state is only valid for a smaller (more
1139        realistic?) range of values than JMD95P/Z and UNESCO
1140      - added masks to the calculation of pressure in store_pressure
1141      - added more check values for density in check_eos (ini_eos.F), some of
1142        the old check values are out of the range of the MDJWF-eos, so don't
1143        expect perfect matches for those
1144    checkpoint46e_pre
1145    
1146    checkpoint46d_post
1147    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
1148      'OCEANICP', also initialised field pressure correctly in ini_eos in the
1149      case of pressure coordinates. eosType='JMD95Z' in
1150      combination with buoyancyRelation='OCEANICP' now causes an error.
1151    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
1152      in find_alpha/beta.
1153    checkpoint46d_pre
1154    
1155    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
1156      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
1157    
1158    checkpoint46c_post
1159    o Changes necessary for ocean in p-coordinates
1160     -  Added new buoyancy relation = 'OCEANICP'
1161     -  Added new parameters = gravitySign (this used to be contained inside
1162        the factor dRdZ which I added when we first switched to R coordinates).
1163     X GM/Redi is not compatible (yet)
1164     X bottom drag and no-slip need to be debugged.
1165    checkpoint46c_pre
1166    
1167    checkpoint46b_post
1168    o Added new equation of state -> JMD95Z and JMD95P
1169      - EOS of Jackett and McDougall, 1995, JAOT
1170      - moved all EOS parameters into EOS.h
1171      - new routines ini_eos.F, store_pressure.F
1172    o Added UNESCO EOS, but not recommended because it requires
1173      in-situ temperature (see JMD95)
1174    o Modified formatting for knudsen2.f in utils/knudsen2 and added
1175      unesco.f to be used with POLY3
1176    checkpoint46b_pre
1177    
1178    checkpoint46a_post
1179    o Added (atmospheric) pressure loading
1180      - new field in FFIELDS.h, etc...
1181      - new cpp flag ATMOSPHERIC_LOADING
1182    o Changed hFacC to _hFacC in calc_phi_hyd.F
1183    o Added SHORTWAVE_HEATING to some files for consistency
1184    checkpoint46a_pre
1185    
1186    checkpoint46
1187    further merges from release1_p5
1188    o new ctrl package
1189      - adopted from ECCO environment to enable optimization
1190      - added Eliassen Palm fluxes to controls
1191    o added Eliassen Palm flux controls to gradient check package
1192    o cost package
1193      - Compatible with new ctrl package
1194      - added Eliassen Palm cost hooks
1195      - modif's of existing cost functions
1196    o Adjoint-related bug fixes in kpp:
1197      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
1198      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
1199    o autodiff package
1200      - flow directives:
1201        + new for S/R do_the_model_io
1202        + enhanced for S/R checkpoint
1203        + new gmredi.flow
1204      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
1205        disable adcommon.h/g_common.h by default.
1206      - fixed problem for adjoint of global_max
1207    o modified verification/carbon/
1208    o New setup for adjoint of global_ocean
1209    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
1210    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
1211    o incorporated hooks for sponge layer code (external_forcing.F)
1212    
1213    checkpoint45d_post
1214    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
1215    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
1216      (affects plume_on_slope "cg2d" output)
1217    o add new parameter deltaTfreesurf for free-surface time stepping
1218    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
1219    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
1220    o change phiMin in exp1 (to agree with documentation)
1221    o add new flags:
1222     - T,S forcing inside/outside Adams-Bashforth
1223     - turn off temp,salt advection and/or forcing
1224     - for each tracer, define internal flag for multiDimAdvection & A-B
1225    o monitor: change definition of KE to check conservation of Energy
1226    
1227    checkpoint45c_post
1228    o Removed f90 comments ("!")
1229    o Modified initialisations to enable exf package for MITgcm
1230      (without invoking ECCO_PACKAGE).
1231    o modifications to gradient check package (Martin Losch)
1232      - enable centered differences
1233      - modified format of standard output
1234    
1235    checkpoint45b_post
1236    o cleaned exchange calls in cg2d
1237    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
1238    o included CPP option SINGLE_LAYER_MODE in thermodynamics
1239      to configure barotropic setup (Martin Losch)
1240    o moved some initialisations within bi,bj loop in dynamics
1241      (TAF flow dependency)
1242    o in initialise_varia, moved call packages_init_variables
1243      before convective_adjustment_init
1244      (corresponding adjustment of TAF tape initialisation).
1245    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
1246    
1247    checkpoint45a_post
1248    o compute Rho over the whole domain (extend iMin,jMin indices)
1249    o specific exchange for X-slice domain (case Ny=1)
1250    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
1251    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
1252    
1253    checkpoint44h_post = checkpoint45
1254    o Fix to restore differentiability:
1255      place at which packages_init_variables is called in
1256      initialise_varia is crucial for reverse control flow.
1257    o modifications in GMRedi to enable stable adjoint
1258      (corresponding modif's in thermodynamics, dynamics)
1259    o added missing hook for sponge layer code in external_forcing
1260    o modified test cost functions
1261    o storing in gad_advection (plus removal of write(0,*)!
1262    o missing headers TR1.h added in convective_adjustment routines
1263    o errorMessageUnit set non-equal zero in eeboot
1264      (conflict on some platforms, e.g. IBM SP3)
1265    o modified carbon verif.
1266    
1267    checkpoint44h_pre
1268    o vertical grid option: allow to put the Interface at the middle between
1269      2 cell-centers ; replace delZ in pkg/kpp by drF.
1270    o GM Advective form: Tracers are advected using the residual transport (=
1271      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
1272    
1273    checkpoint44g_post
1274    o fix surface correction term in multiDimAdvection (affects plume_on_slope
1275      results) ; ifdef missing in thermodynamics.F
1276    
1277    checkpoint44f_pre,checkpoint44f_post
1278    o added PTRACERS package
1279      This allows an arbitrary number of passive tracers to be integrated
1280      forward simultaneously with the dynamicaly model.
1281      + Implemented so far:
1282        - basic forward algorithm (time-stepping, advection, diffusion, convection)
1283        - I/O and checkpointing
1284        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
1285      + Not implemented so far:
1286        - KPP
1287        - OBCS
1288      + No specific example supplied (yet) but global_ocean.90x40x15 has the
1289        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
1290        line in data.pkg.
1291      + This package is disabled by default since it increases storage.
1292    
1293    
1294    o testscript: added -cleanup option
1295    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
1296                 b) enable to filter 2D fields.
1297    
1298    checkpoint44e_pre,post
1299    o re-wrote convective adjustment to use pre-calculated weights
1300      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
1301      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
1302      Original calls to convect() still in place.
1303    
1304    chkpt44d_pre,post
1305    o added missing EXCLUDE_MONITOR flags
1306    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
1307      (incompatible typ in MIN/MAX expressions caused problems
1308      on IBM SP3)
1309    o in genmake added variable MAKEDEPEND
1310      plus resetting for case SunOS
1311    o added timer_stats.c routine for IBM SP3
1312    o removed variables in dynamics
1313    !!! I forgot to create tag chkpt44d_pre !!!
1314    !!! But chkpt44d_pre = chkpt44c_post    !!!
1315    
1316    o real fresh water flux implemented with non-linear free-surface.
1317    
1318    chkpt44c_pre,post
1319    o few fix (mask in shap_s2, EmPmR in external_field_load,
1320      USE_NATURAL_BCS in solve_for_P);
1321    o add arguments myIter & myTime to S/R obcs_calc & solve_for_P
1322    
1323    checkpoint44b_pre/_post
1324    o merge of relevant stuff from the ecco-branch:
1325      - genmake: removed $S64 overwrite for case SunOS
1326      - pkg/exf: update and corrections for field swapping and obcs
1327      - pkg/ecco: parameter lists for the_model_main, the_main_loop
1328                  harmonized between ECCO and MITgcm
1329      - pkg/autodiff: added flow directives for obcs, mdsio_gl_slice
1330                      updated checkpointing_lev... lists for obcs
1331      - model/src: minor changes in forward_step, plot_field
1332                   added directive for divided adjoint in the_main_loop
1333      - pkg/mdsio: added mdsio_gl_slice
1334    
1335    o check parameters & config (chkpt44a_pre,post)
1336    o OBC and NonLin_FrSurf.
1337    
1338    checkpoint44
1339    o fix bug in mom_vi_del2uv
1340    o select when filters are applied ; add options to zonal_filter (data.zonfilt)
1341    o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
1342    o update AIM experiments (NCEP input files)
1343    o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
1344    o added some stuff for AD
1345    
1346    checkpoint43
1347    o added two new advection tests
1348    o added global 4x4 degree ocean test
1349    o added test of H&S94 with free surface on cube
1350    o some final mods for gradient check, adjoint,...
1351    
1352    checkpoint42
1353      Fixed AD-related problems:
1354    o Store directives up-to-date with re-arranged Adams-Bashforth
1355      (mainly thermodynamics.F)
1356    o New store directives for multi-dim. advection schemes
1357      * new CPP flag ALLOW_MULTI_DIM_ADVECTION
1358      * new common block and key passkey
1359      (mainly gad_advection.F)
1360    o Modified store directives for split of dynamics/thermodynamics
1361      for the case ALLOW_KPP
1362    o Cleaned argument list for timestep_tracer.F
1363    
1364    checkpoint41
1365    o re-formatted/added comments in prologues of key subroutines
1366      to work with protex
1367    
1368    checkpoint40
1369    o moved calc_gs, calc_gt and calc_tr1 back to model/src
1370    o added FLT (floats) package from Arne along with demo. experiment
1371    o re-arranged Adams-Bashforth scheme for tracers to allow easier
1372      implementation of forward-in-time forcing terms
1373    o more mods for non-linear free-surface including new variable
1374    o modified multi-dim method to work on cube
1375    o bug fix in KPP (from DM)
1376    
1377    checkpoint40pre9
1378    o added DST advection schemes
1379    o fix MPI bug on SGI's
1380    o modifications for non-linear free-surface
1381    o fixed conditionals for fixed flow/passive tracer only mode
1382    o added tension/strain form of stress tensor
1383    o changes to commenting of arguments for TAF/TAMC
1384    o added/updated many matlab scripts
1385    o added multi-dimensional advection method for tracers
1386      
1387    checkpoint40pre8
1388    o new package rw/
1389      Added method for dumping intermediate local arrays:
1390      mdsio_writetile - same as mdsio_writefield except works from inside
1391                        bi,bj loop
1392      mdsio_writelocal - same as mdsio_writetile except works for local
1393                         arrays
1394      write_local_r? - higher-level wrapper for mdsio_writelocal
1395      Controlled by diagFreq. Defaults to zero (ie. no dumps)
1396      Example given at end of mom_vecinv.F that dumps some local arrays.
1397    o replaced calc_mom_rhs.F by mom_fluxform.F/mom_vecinc.F to
1398      control flux-form versus vector invariant code.
1399      Switch is runtime flag vectorInvariantMomentum (defaults to false)
1400      or genmake -DISABLE ...
1401    o TAMC-related update to cope with mom_fluxform.F/mom_vecinc.F
1402      (additional storing is now needed for case vecinv;
1403      currently nothing implemented to switch this storing off
1404      in case fluxform is used since no CPP flag available).
1405    
1406    checkpoint40pre7
1407    o bug fix in dynamics.F
1408      calc_viscosity called before k=1,Nr loop.
1409    o added some #ifdef's ALLOW_PASSIVE_TRACER
1410    o cleaned initialisations in ctrl_map_ini
1411      related to TAF
1412    
1413    checkpoint40pre6
1414    o split dynamics into thermodynamics & dynamics
1415    o corresponding split of calc_diffusivity into
1416      calc_diffusivity, calc_viscosity
1417      (kpp_calc_diff, kpp_calc_visc).
1418    o Added diffkr, kapgm to control variables
1419    o bug fix in gmredi_slope_limit for ldd97
1420    
1421    checkpoint40pre5
1422    o proper initialization of Adams-Bashforth time stepping
1423      + uses forward step for very first step of model (iter=0)
1424    o re-generated *all* output since almost all output is modified by this
1425      change (sorry but we've been putting this one off for about 2 years)
1426      + natl_box, aim.5l_Equatorial_Channel and aim.5l_zon-ave were
1427        *not* regenerated since they are already out of date and I don't
1428        want to create the impression that they are suddenly working.
1429    o removed KAP stuff for DEC's
1430    o modified/added many .cvsignore files in */code and */input
1431    o added new expt "solid-body.cs-32x32x1"
1432      + this uses an alternative form of ini_curvilinear_grid.F which
1433        is not necessarily any better than the current one...
1434    
1435    checkpoint40pre4
1436    o added re-initialisations of utrans,vtrans,rtrans in
1437      calc_common_factors which are crucial for TAF.
1438    o extended iMin,jMin range for calc_common_factors,
1439      calc_diffusivity
1440    o added option ALLOW_PASSIVE_TRACER
1441    o a few minor updates and fixes
1442    
1443    checkpoint40pre3
1444    o created calc_gtr1.F for gad package
1445    o split the_main_loop and re-introduced forward_step
1446    o some recomputations of nIter0 for TAMC
1447    
1448    checkpoint40pre2
1449    o Updated to latest branch of AJA, JMC
1450    o Added gradient check package
1451    o Added routines for passive tracer handling
1452    o Added carbon sequestration sensitivity experiment
1453    
1454    checkpoint39
1455     o Modifications and fixes to support TAMC
1456       (mainly missing or wrong directives)
1457     o Corrected common blocks when fooling TAMC to produce adjoint I/O
1458       in addummy_in_stepping
1459     o Updated verification/vero/ (bug fixes in code/, correct pickups in input/)
1460     o Enabled "sliced" (xz-,yz-) exchanges, needed for obcs.
1461     o Included following packages:
1462       cal: calendar
1463       exf: external forcing
1464       ecco: essential routines to control use of cal, exf
1465             (NB: this is not the full ECCO environment)
1466     o disabled some packages by default in genmake
1467    
1468    checkpoint38
1469     o see notes_c37_adj.txt
1470     o corrected wrong layer index in external_forcing_t
1471     o replaced the_main_loop/forward_step by the_main_loop
1472     o removed forceoutput from write_state
1473       (replaced criteria for initial/final state)
1474     o added runtime flag for pre-C35 pickups: usePickupBeforeC35
1475    
1476    checkpoint37
1477     o mdsio.F routine split and packaged in pkg/mdsio
1478       (mdsio.F and mdsio_gl.F still exist in eesupp/src but are not
1479        used unless genmake -disable=mdsio)
1480     o allow a more precise surface-geopotential gradient for the atmosphere
1481       taking into account the change in space of Alpha (=1/rho) at the surface.
1482     o variable "etaN" (replace cg2d_x) is the surface R-anomaly [r unit]
1483       (ocean: sea surface height [m] / atmos: surface pressure anomaly [Pa])
1484     o Change units: Phi_Hydrostatic (=phiHyd), Phi_Surface(=cg2d_x) and
1485       Phi_NonHydrostatic (=cg3d_x), all have now the dimension of a potential
1486       [m2/s2] (pressure/rhoConst in the ocean ; Geo-Potential in the atmosphere).
1487     o Time-Average diagnostics defined as a pseudo package "timeave".
1488     o pickup files : old pickup (before c35) did not work with new code (c35
1489       and after) unless activating 2 commented lines in initialise-varia.
1490     o Non-Hydrostatic pickup file Pb fixed.
1491     o bug with Rigid-lid version (since c35) fixed.  
1492    
1493    checkpoint36
1494     o implement Crank-Nickelson barotropic time-stepping
1495     o recover Time-Average diagnostics
1496     o fix Pb in checkpoint (PR#19)
1497     o AIM become a standard package ; clean unused CPP_kees
1498    
1499    checkpoint35
1500     o subtantial rewrite of dynamics.f
1501     o allows staggered time-stepping
1502     o packaged obcs, aim (Atmospheric Physics), zonal_filt, shap_filt
1503     o added bottom drag (linear + quadratic)
1504    
1505    checkpoint34
1506     o Modified exchange routines for correct reverse simulation.
1507     o Added verification output to comply with bug fix in impldiff.F
1508       as of c33 (exp2, natl_box).
1509     o Corrected store directives in dynamics.F
1510     o Corrected array boundaries in impldiff.F
1511     o Corrected array dimensions in gmredi.
1512       Added temporary scalars to avoid storage by TAMC (gmredi, kpp).
1513     o Added routine GLOBAL_SUM_INT to global_sum.F
1514     o Added mdsio_gl.F for ECCO purposes.
1515    
1516    checkpoint33
1517     o Fixed bug in lower BC in impldiff.F
1518     o Fixed confusion about units of forcing arrays in FFIELDS.h
1519       namely Fu,Fv,Qnet,Qsw,EmPmR:
1520       - Removed verification/natl_box/code/external_fields_scale.F
1521         (did not differ from that in model/src)
1522       - Changed units of fu,fv,Qnet,Qsw,EmPmR back to proper units
1523         (see FFIELDS.h for description)
1524       - Scale fu,fv,Qnet,Qsw,EmPmR when used in external_forcing_surf.F,
1525         kpp_calc.F and kpp_transport_t.F
1526       - Removed model/src/external_fields_scale.F and calls to it
1527       - verification/natl_box uses flux data with "atmospheric" sign so
1528         a special version of external_fields_load.F is used to
1529         change the data as it's read in. This way, the arrays
1530         have the right units and signs at all times tha a user could
1531         possibly use them.
1532     o Corrected genmake to delete a temporary file during configuration
1533    
1534    checkpoint32
1535     o Scaling of forcing fields moved from external_forcing.F to
1536       external_fields_scale.F, called directly after loading fields.
1537     o Surface relaxation terms added to surface tendency fields in
1538       extra subroutine.
1539     o impldiff.F changed to avoid storing by TAMC of huge intermediate
1540       fields.
1541     o Changes in GMRedi to comply with packaging structure.
1542     o Modifications and bug fixes in KPP package.
1543     o Verification experiment for KPP added (verification/nat_box/)
1544    
1545    checkpoint31
1546     o Packages interface brought in line with defined standard
1547       -> new routines packages_...F
1548       -> changes in initialise_fixed.F, initialise_varia.F
1549       -> enables initialisation interface for ECCO package
1550     o Rescaling of external forcing fields immediately after read
1551       (removed from external_forcing.F)
1552       -> new: surface_fields_scale.F
1553       -> affects ini_foorcing.F, external_fields_load.F
1554     o Computation of surface tendencies before tendency updates.
1555       -> new: external_forcing_surf.F
1556     o Change of variable names useGMRedi, useKPP, useECCO
1557     o Further changes in dynamics.F, impldiff.F for TAMC
1558     o Tested for experiments 0, 2, 4.
1559       - not yet tested for GMRedi.
1560       - not yet tested for KPP.
1561    
1562    checkpoint30
1563     o Updates for OBCs
1564     o New experiment for test OBCs (internal_wave)
1565     o New output.txt in verification/exp4/results/
1566     o Updates for KPP: calculation of viscosity corrected, new variables
1567       kpp_dumpFreq and kpp_taveFreq
1568     o CPP'd calls to system routines for TARGET_CRAY_VECTOR (P.H.)
1569       and entry for T90 in genmake
1570    
1571    checkpoint29
1572     o packaged KPP and GM/Redi
1573    
1574    checkpoint28
1575     o Corrected initialization of hFacMin for difference vertical coordinates
1576     o Modified calculation of partial cell thickness to more robust algorithm
1577     o config_summary.F: replaced write_1D_... by write_0D_...
1578       read_write.F: added subroutines write_0D_...
1579     o routines calc_common_factors, calc_gs, calc_gt, calc_phi_hyd, find_rho:
1580       included some initialisations required for TAMC.
1581     o routine calc_isoslopes: modified sqrt computation to make it
1582       differentiable for zero argument.
1583     o routines dynamics, impldiff:
1584       included store directives and tape key computations required for TAMC.
1585     o ALL TAMC related changes are between ifdef ALLOW_AUTODIFF_TAMC
1586    
1587  checkpoint27  checkpoint27
1588   o fixed calc_isoslopes() to so that cancellation of terms in tensor   o fixed calc_isoslopes() to so that cancellation of terms in tensor
1589     formulation works properly with variable resolution.     formulation works properly with variable resolution.

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