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revision 1.26 by adcroft, Mon Apr 10 14:41:52 2000 UTC revision 1.308 by jmc, Sat Jun 12 21:18:11 2004 UTC
# Line 2  $Header$ Line 2  $Header$
2    
3      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
4      ==============================      ==============================
5    o faulks upgraded: re-generate output.txt that have changed:
6       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
7    o Added Bryan and Lewis, 1979, vertical diffusivity profile
8    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
9    o added Sadourny discretization of Coriolis
10      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
11      - re-enabled use of omega3 (useAbsVorticity)
12    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
13      vector-invarianet equations
14      - note: does *NOT* yet use same variable visc. for no-slip BC's.
15    o recoded the lateral boundary conditions for non-hydrostatic w, this time
16      hopefully without new bugs
17      - still to do: biharmonic friction for non-hydrostatic w
18    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
19    o regenerated output for global_ocean_ebm (using -ieee)
20    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
21      of mom_common/
22      - simple re-arrangement of instructions within computing loop
23    checkpoint53d_pre
24    
25    checkpoint53c_post
26    o new version of coupler for AIM+thSIce and Ocean models
27     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
28     - land: change Evaporation of snow
29     - aim with thSIce: fix bug in snow-precip.
30    o changes to calc_gw.F
31     - bug fix for w^2 term near the bottom boundary
32     - (hopefully) improve the lateral slip boundary condtions for use with
33        partial/looped cells
34      - because the bug fix changes two verification experiments anyway (exp5
35        and plume on slope), change the lateral boundary condition from half slip
36        to the value of no_slip_sides
37    o ebm package wasnt quite up to the parallel task. Fixed that.
38    o Adjoint of EBM package + verification
39      * TLM OK
40      * ADM not sufficient accuracy yet (needs further testing)
41    
42    checkpoint53b_post
43    o Commiting new energy balance model to repository
44      * package is pkg/ebm
45      * verif. is verification/global_ocean_ebm
46      * references are in ebm_driver.F
47    C      * X. Wang, P. Stone and J. Marotzke, 1999:
48    C        Global thermohaline circulation. Part I:
49    C        Sensitivity to atmospheric moisture transport.
50    C        J. Climate 12(1), 71-82
51    C      * X. Wang, P. Stone and J. Marotzke, 1999:
52    C        Global thermohaline circulation. Part II:
53    C        Sensitivity with interactive transport.
54    C        J. Climate 12(1), 83-91
55    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
56    C        Destabilization of the thermohaline circulation
57    C        by atmospheric eddy transports.
58    C        J. Climate 7(12), 1870-1882
59    o Will need long integration testing.
60    checkpoint53b_pre
61    
62    o created pkg/mom_common in preparation for variable viscosity code
63    o renamed and split ini_mnc_io
64    o pkg/land: only liquid water can diffuse or run-off
65    o AIM using land: soil wetness availability account for snow
66    o added printMapIncludesZeros to EEPARMS namelist
67    
68    checkpoint53a_post
69    o restore TAMC compatiility for exf_constants.h
70      (no usage of _d in .h)
71    o Additional storing in KPP in an attempt to fix
72      TAMC problem with adjoint of KPP code.
73      (no success...)
74      Identical code works fine with TAF.
75    o Fixed verification/natl_box_adjoint experiments.
76      Initial conditions for Experiments 4 and 5 are now
77      set to "SEAICE_initialHEFF=0", which is more reasonable,
78      and hence gives results closer to that of Experiment 2.
79      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
80    
81    checkpoint53
82    o stable checkpoint with up to date adjoint
83      TLM tests only run for 1st grdchk at the moment. Its unclear if
84      this is a code problem or a problem with resetting code for g_
85      variables that is being autogenerated wrong.
86      Otherwise:
87       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
88       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
89         are both still in chaos following their security messes.
90    
91    checkpoint52n_post
92    o various build (mostly genmake2) changes including:
93      - ability to build/run more easily within Cygwin and MacOS X
94      - more complicated Makefiles with a stronger dependence on Gnu Make
95    o pkg/seaice modifications
96      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
97        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
98        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
99      - changed proxy for geostrophic velocity and updated
100        verification/lab_sea/results/* accordingly
101      - removed ADI dynamic solver from pkg/seaice
102      - replaced all occurrences of 1/CSTICE or 1/CSUICE
103        they caused a segmentation fault under certain circumstances
104      - removed unused field WATR
105    o bug fix in exf-package:
106      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
107         now reflect that.
108    o small fixes in the cal-package:
109      - set reference date to first of January for the 'model'-calendar
110      - failing of cal_CheckDate in cal_FullDate now actually results in a
111        warning
112    o small modifications in exf-package to increase flexibility:
113      - change climtempfreeze from a constant to a runtime parameter that
114        is specified in data.exf_clim (default = -1.9)
115      - introduce runtime parameter windstressmax (default = 2.0) that is
116        specified in data.exf
117    o fix in pkg/thsice:
118      - update Evap (Tsf changes) to be consistent with Latent heat flux
119      - maintain snow precipitation unchanged (even if Tsf >=0).
120     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
121    
122    checkpoint52m_post
123    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
124      this does not change any of the results, because myIter=0 in swfrac always
125      lead to jwtype=2 (the default anyway), but the call makes little sense
126      as a default
127    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
128    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
129      atmospheric model (AIM) to use it ; add a "slab ocean" component.
130    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
131    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
132    o extending useSingleCpuIO option to work with new exch2 I/O format
133      - old-style, missing-tile I/O is still accessible by defining CPP
134        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
135    o monitor package can write to NetCDF files and/or STDOUT
136    o fix re-definition bug in MNC_GRID_INIT_ALL()
137    o doc/api_reference added
138      - a framework for building an API Reference Manual using all
139        the "protex" comments embedded in the code
140      - see pkg/generic_advdiff, pkg/mnc for examples
141    o MNC:
142      - make myThid the last argument for all subroutines
143      - new default for the grid files: NO halos
144      - add useMNC and other run-time flags
145      - separate per-file-group handling of the unlimited dimension
146      - early initialization of MNC w/ flags read at the eeboot stage
147        and lookup tables set in initialize_fixed
148      - write all MNC output to a freshly-created directory
149    o thermodynamics sea-ice (thsice) is now tested with testreport.
150    o test exp. advect_cs: use the standard cs32 grid ; update output.
151    o Added functionality to grdchk:
152      pick global i,j,k position (or nearest wet) where to perform check.
153    
154    checkpoint52l_post
155    o new land formulation:
156      a) use ground enthalpy as prognostic variable to ensure exact
157         energy conservation.
158      b) account for water temperature and for latent heat of freezing
159         in all processes (rain, run-off, ground storage)
160      c) compute surface and ground temperature implicitly.
161    o aim_v23 modification for new land model:
162      a) Treat separately land / ocean / sea-ice surface fluxes
163         to allow implicit computation of land & sea-ice surface temp.
164      b) add snow precipitation.
165    checkpoint52l_pre
166    
167    o fix problem (when 1 tile is empty) in min/max monitor.
168    o fix bug in timeAve (u,vZetatave in common block)
169    o no restoring terms under ice for pkg/seaice
170    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
171    o bug fix for pkg/seaice pickups
172    o change MNC call locations and add coordinate attributes
173    o mask vorticity at the corner ; affects global_ocean.cs output
174    o fix ini_curvilinear_grid ; test CS experiments with mpi
175    o aim.5l_cs: modify sea-ice fraction input file ; update output
176    o exf: Adding simple range check routine for exf fields after read
177    
178    checkpoint52k_post
179    o removed top-level directory "diags"
180      - we migrated these functions to pkg/timeave a long time ago
181    o fixed bug introduced in pkg/monitor
182    o accuracy ctrlprec = 32 insuffient for gradient checks using
183      averaged fields (I/O via cost_averages)
184      -> use ctrl.h in active_file*.F to control I/O precision.
185    o paramter list of CALL ADTHE_MAIN_LOOP
186    o added initial do_the_model_io to ecco
187    o set all ...Freq to zero after cost_final
188      taveFreq, dumpFreq, pChkptFreq
189    o MAIN and ECCO differentiability restored
190    
191    checkpoint52j_post
192    o fix nchklev in tamc.h for global_ocean...
193    o Bringing flow and store directives up-to-date
194    o Really weird thing!
195      call do_the_model_io from the_main_loop with parameters
196      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
197      TAF places a faulty re-call of initialise_varia
198      after cost_final call which should not be there!
199    checkpoint52j_pre
200    
201    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
202      error messages
203    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
204    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
205      debug output
206    o modfied mdsio_writefield.F to handle non-global files under exch2
207    o update AIM Cubed-Sphere exp (aim.5l_cs):
208      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
209    o update AIM Equatorial Channel exp:
210      use standard aim_v23 pkg and change the SST fields to be more realistic.
211    o globalFile now works with exch2
212    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
213      mon_vort3.F to make exch2 friendly with >1 tile per cube face
214    o limit timeave output for hi-res integrations
215    
216    checkpoint52i_post
217    o removed CPP_EEOPTIONS.h from verification/*/code
218    o updated the tiling for global_ocean_pressure
219    checkpoint52i_pre
220    
221    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
222      the old pkg/aim).
223    
224    checkpoint52h_pre
225    o shortened offending lines in exch2_send_rx?.template
226    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
227    o genmake2: add build & execute test for NetCDF code
228    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
229      old grid files, moved CPP_EEMACROS.h to pkg/exch2
230    o added useSingleCPUIO flag to monitor.F and mon_out.F
231    o added temporary hack for sea-ice dynamics on the cube:
232      metric terms are ignored and it is assumed that
233      there is no sea-ice on cube faces 1, 2, 4, and 5.
234    
235    checkpoint52f_post
236    o added exch2 cube routines to pkg/exch2
237    o modified hs94.cs-32x32x5 to use it
238    o added new grid files to hs94.cs-32x32x5
239    checkpoint52f_pre
240    
241    checkpoint52e_post
242    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
243      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
244    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
245      to work with implicit vertical advection and AB ;
246    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
247    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
248     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
249    checkpoint52e_pre
250    
251    o fix bug in impldiff when Nr=1 or Nr=2.
252    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
253    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
254    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
255      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
256    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
257    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
258    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
259    
260    checkpoint52d_post
261    o re-tiled many expts to allow comparison in multi-processor mode
262      - updated output accordingly
263      - changed hs94.128x64x5 to use intial T from file rather than use the
264        random number generator
265    o add infrastructure in model routines for fizhi and gridalt packages
266    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
267    o changes to permit hi-res, cubed-sphere, configuration
268      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
269      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
270      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
271        of surface winds for the cube
272      (A verification experiment, based on global_ocean.cs32x15, but with
273       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
274       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
275       complete with example surface forcing files and matlab scripts to look
276       at the output and compare it with that of global_ocean.cs32x15.)
277    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
278       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
279       to conform to the common rule.
280    o check-in the first version of the coupler + interfaces for multi-components
281       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
282       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
283       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
284       - ocean and atmos. share the same horizontal grid (no interpolation).
285       - exchanges between component and coupler is done in forward_step
286    o new verification experiment, cpl_aim+ocn:
287       coupled ocean - AIM atmosphere on cs32 grid.
288    
289    checkpoint52d_pre
290    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
291    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
292    
293    checkpoint52c_post
294    o Fixing OPTIONS files for use of exf:
295      - ALLOW_ECCO not needed
296      - ECCO_CPPOPTIONS.h should not be included from
297        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
298        as has been the case in the past
299      - All cal/exf related options are currently set in
300        single header file. Should remain so until we
301        agree on a consistent new policy.
302    o Removed all CPP options for cal package.
303      cal has no more CPP options.
304    o modified STOREs in GAD_ADVECTION
305    o corrected key comp. for passkey
306    
307    checkpoint52b_post
308    o new version: "thsice" of thermodynamic sea-ice pkg:
309     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
310     - modify fluxes but do not change theta directly;
311     - light cleaning of bulk_force pkg (still needed with thsice).
312     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
313       + output_thsice.txt to test thsice & bulk_force pkgs.
314    o put back grid & coriolis monitor output.
315    checkpoint52b_pre
316    
317    o call "do_the_model_io" at the beginning (=> dump initial state)
318    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
319    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
320      (need info on NUMBER_OF_PTRACERS)
321    o missing PTRACERS headers in some routines
322    o default tamc.h in pkg/autodiff supposed to crash
323      to ensure proper customization
324    
325    checkpoint52a_post
326    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
327      - moved surfaceTendencyTice from pkg/seaice to main code
328      - subroutine FREEZE_SURFACE now limits only surface temperature
329        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
330        => new output.txt for global_ocean.cs32x15 & global_with_exf
331      - keep the old version of FREEZE for backward compatibility;
332        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
333      - corresponding modifs for TAF directives
334    o added surface flux output variables to TIMEAVE_STATVARS
335    o time-averaged output for pkg/ptracers
336    o fix problem with ECCO-related divided adjoint
337      snapshot file was missing some ad-variables,
338      but no warning issued by TAF
339    
340    checkpoint52a_pre
341    o some bug fixes for #undef REAL4_IS_SLOW
342    
343    checkpoint52 = ecco_c52_e35
344    o after testing adjoints of checkpoint51u_post
345    
346    checkpoint51u_post
347    o this is the post-merge tag of the ecco-branch
348      (needs another clean checkout and re-testing)
349    o various natl_box_adjoint configs and results
350      but no input fields
351    o obcs adjoint not yet merged!
352    o adding ECCO global 1x1 and 2x2 degree configs
353    o updated/extended some store directives for seaice
354    o pkg/ecco now containes ecco-specific part of cost function
355    o top level routines the_main_loop, forward_step
356      supersede those in model/src/
357      previous input data.cost now in data.ecco
358      (new namelist ecco_cost_nml)
359    o in ctrl/ cleaned some cross-dependencies and updated CPP options
360    
361    checkpoint51t_post
362    o this is the pre-merge tag of the ecco-branch
363    
364    checkpoint51s_post
365    o cleanup: removed various obsolete #define-s
366    o pkg/grdchk
367      - renamed 'ph-grd 3' to 'grad-res'
368      - merged from ecco-branch
369        (remaining bug fixes for obcs gradient checks)
370      - additional high-precision output for testreport
371        (grep for 'precision_grdchk_result')
372    
373    checkpoint51r_post
374    o cleaned up or removed CPP_OPTIONS.h files
375    o updated results for some of the tests to reflect the new
376      optfiles (-ieee: -O0 instead of -O3)
377    
378    checkpoint51q_post
379    o cd_code:
380      - moved cd_scheme.F -> cd_code_scheme.F
381      - separate read_checkpoint from cd_code_ini_vars.F
382      - separated cd_code part from write_checkpoint
383      - updated AD_SOURCE, generated .flow
384      - added CD_CODE_VARS.h to the_main_loop
385      - Moving cd_code specific store dir.s to pkg/cd_code
386    o ctrl package totally restructured
387      - pack/unpack now optional and decoupled from
388        xx_/adxx_ I/O
389      - ctrl_pack/unpack cleaned
390        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
391      - confined inclusion of AD_CONFIG.h to where necessary.
392    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
393    
394    checkpoint51p_post
395    o create initial cd_code package
396      - WARNING: the initialization of fields within packages
397        is broken because INI_FIELDS (where READ_CHECKPOINT is
398        called) is called *before* PACKAGES_INIT_VARIABLES.
399        This seems to be backwards since
400        1) its important to initially zero the entire field including
401           the "halo" region
402        2) zeroing needs to be done *before* reading pickup info
403           and the pickup call might or might not happen in any
404           particular run
405      - this needs an overhaul for R2
406    o cleanup verification/*/code/GMREDI_OPTIONS.h
407    o cleanup testreport
408    
409    checkpoint51o_post
410    o bringing AD-related verif's up to date with genmake2
411      - carbon/
412      - global_ocean.90x40x15/
413      - hs.94.1x64x5/
414      - (front_relax/ )
415    o (more) consistent directory structure for AD-related verif.'s
416    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
417    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
418    o bug fix in find_alpha.F for MDJWF:
419      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
420        change rho -> rho-rhoConst
421      - replace call find_rho to find_rhonum
422    o initialisation of rFlx extended to full array (required by TAF)
423      and shifted to thermodynamics
424    o removed PTRACERS.h in ptracers routine
425    o added surfacetendencyPtr to S/R parameter list pracers_forcing
426    o Correcting initialisations for fVerU, fVerV.
427    o helping TAF to recognize dependency on kUp for
428      fVerU, fVerV
429    o Replacing delZ by delR in pkg/ctrl/
430    checkpoint51o_pre
431    
432    o undid all of cp51 pending some cleanups and discussion
433    o added the [#include "AD_CONFIG.h"] statement to all files that need
434       it for adjoint/tl #defines
435     o re-worked the build logic in genmake2 to support AD_CONFIG.h
436     o removed tools/genmake since it no longer works
437    
438    checkpoint51n_post
439    o modifications to make FREEZE flux visible to pkg/kpp
440      - moved surfaceTendencyTice from pkg/seaice to main code
441      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
442      - subroutine FREEZE now limits only surface temperature
443        (this means new output.txt for global_ocean.90x40x15,
444         global_ocean.cs32x15, and global_with_exf)
445    o added surface flux output variables to TIMEAVE_STATVARS
446    
447    checkpoint51n_pre
448    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
449    o added [#include "AD_CONFIG.h"] to all files that use the following
450      defines:
451      - ALLOW_ADJOINT_RUN
452      - ALLOW_TANGENTLINEAR_RUN
453      - ALLOW_ECCO_OPTIMIZATION
454    
455    checkpoint51m_post
456    o incorporating changes to get TAMC/TAF working in genmake2
457      - added new TAMC/TAF targets to the Makefile
458      - various cleanups related to package handling
459      - these changes should have no impact on the forward model
460    
461    checkpoint51l_post
462    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
463     - faster algorithm for cal_addtime.F
464     - higher precision arithmetic, where needed
465     - pkg/exf *startdate variables changed from calendar date to
466       model integration time
467    
468    checkpoint51l_pre
469    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
470    o enable to apply restoring on S & T only in a latitude band.
471    o update output (external_forcing_surf modif. change truncation errors)
472       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
473    
474    checkpoint51k_post
475    o change default to: useNHMTerms=.FALSE.
476     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
477       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
478     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
479        exp1, ideal_2D_oce
480     - change data file of oceanic exp (leave the results unchanged for now)
481       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
482    o set gravitySign automatically according to the vertical coordinate used
483      (and change sign: back to "logical" value: +1 when R increases downward)
484    o added an include barrier to the default CPP_OPTIONS.h and
485      removed the #include "PACKAGES_CONFIG.h" from it
486    o fix a bug in mom_fluxform (from chk51j_post)
487    
488    checkpoint51j_post
489    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
490    o adjusted some flow directives (dynamics, thermodynamics)
491    o added cubed-sphere case to test cost function
492    o heckpoint_lev?_directives.h now include
493      pkg-specific directives, whenever those are enabled.
494    o Moving pkg-specific flow directives to corresponding pkg
495      Moving pkg-specific differentiation list to corresponding pkg
496      Moving pkg-specific checkpoint-lev storing to corresponding pkg
497      ---> conventions are
498           - pkg_ad.flow
499           - pkg_ad_diff.list
500           - pkg_ad_check_lev?_dir.h
501    
502    checkpoint51i_post
503    o merge of the branch-genmake2
504      - knowingly breaks the older genmake
505      - automatic generation of all ALLOW_${PKG_NAME} defines
506      - new testreport supersedes older testscript
507    o large number of package inclusion and header cleanups
508    checkpoint51i_pre
509    
510    o new output for adjoin of global ocean vector invariant
511    o fix for checkpoint of thermodynamic seaice and bulk_force
512    o Steph gchem various cleanups
513    
514    checkpoint 51h_pre
515    o fixed some single quotes
516    o modify gchem pkg to be more versatile
517    o modifications to clean up dic pkg
518    o add pkg/cfc
519    
520    checkpoint51g_post
521    o provide links for ARPACK and ADM*TLM
522    o start removing verification/vero/
523    o update AD-related stuff
524      (in particular some IF-statements in model/src/ routines)
525    o adding to verification/global_ocean.90x40x15/ adjoint of
526      vector invariant setup
527    
528    checkpoint51f_post
529    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
530    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
531      of tracer Green's fucntions for ocean inversion project.
532    
533    checkpoint51f_pre
534    o Added on-the-fly spatial interpolation capability
535        "USE_EXF_INTERPOLATION" to pkg/exf.
536      - This is a temporary Cartesian-grid hack until
537        the super-duper ESMF coupler becomes available.
538      - See verification/global_with_exf/README for usage example.
539      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
540        flags and modified pkg/seaice accordingly.
541    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
542        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
543        non-local transport term.
544    
545    checkpoint51e_post
546    o pkg/mom_vecinv:
547      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
548      - add time-ave diagnostic of vorticity advection.
549    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
550    o atmospheric geopotential: - include water vapor effect;
551                                - use p^kappa in p* scaling.
552    o land pkg: read initial state from files.
553    o AIM : add stratospheric drag in the upper level
554    
555    checkpoint51d_post
556    o change function ILNBLNK (=> last non-blank char.) to return zero
557      (instead of the string length) when the string. char is empty
558    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
559    o modif's to restore TAMC compatibility
560      - avoid "_d" constructs in PARAMETER declarations
561      - avoid interrupting lines by comment lines
562    o Use cluster local disks for purely local I/O
563      vs. globally visible disks needed for ctrl stuff
564      (merged from ecco-branch)
565      - new active_file_loc... and mdsio_..._loc routines
566      - affected packages: autodiff, ctrl, grdchk, mdsio
567    
568    checkpoint51c_post
569    o introducing integer flag debugLevel
570      - debLevZero: suppress all output
571      - debLevA: standard
572      - debLevB: equivalent to current debugMode=.TRUE.
573    o introducing pathname variable mdsioLocalDir for mdsio
574      that can be specified at runtime
575      (relevant for cluster I/O to local disk)
576    `
577    >>>checkpoint51b_post
578    adjoint of ptracers
579    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
580    o extended state in checkpoint_lev?, etc.
581    o alternative ctrl/cost with tr1 or ptracer
582    o new comlev1_bibj_ptracers
583    o new ptracers.flow
584    o made ptracers_forcing same as external_forcing_s
585    o added verification for adjoint with ptracers
586      - adm. grdchk fail so far
587      - tlm. grdchk OK
588      - checked tapelev/comlev recomputations: OK
589    <<<checkpoint51b_pre
590    
591    checkpoint51a_post
592    o added code for biogeochemistry package
593      - new pkgs: dic, gchem
594      - new subroutine in ptracers
595    o modify code for biogeo packages
596      - in model/src and pkg/ptracers
597    
598    checkpoint51
599    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
600      - autodiff, ctrl, exf, grdchk, seaice
601      kept separate packages
602      - cost, ecco, obcs
603    o updating verification/internal_wave, verification/lab_sea
604      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
605    
606    checkpoint50i_post
607    o Preparing next differentiable checkpoint and sync
608      of MAIN vs. ecco-branch
609      - 1st step: this one is differentiable
610      - 2nd step: next(! not this) checkpoint will have updated packages
611                  from ecco-branch)
612    
613    checkpoint50h_post
614    o new package "land": provide surface BC for AIM.
615    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
616    o AIM: use true log-P extrapolation for near surface temp (= as in
617        F.Molteni paper) ; update aim.5l_cs output.
618    o New variable in PARM03 for more flexible pickups
619    o somewhat cleaned package initialisation sequence for
620      ctrl/ cost/ ecco/ in packages_... routines
621    
622    checkpoint50g_post
623    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
624      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
625      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
626        made the default because of faster convergence than ADI
627    
628    checkpoint50f_post
629    o exf totally restructured
630      - replaced all exf_set_ routines by one generic exf_set_gen.F
631        and made sure it's still differentiable
632      - split exf_getffields.F into new exf_bulkformulae.F
633      - exf_inscal_/exf_outscal_ suffixes consistent with field names
634      - updated adjoint/makefile and relevant verif. accordingly
635    
636    checkpoint50f_pre
637     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
638          + change Evap over land. (update aim.5l_cs output)
639     o added missing .cvsignores and made uniform across expts
640     o changed configuration of tidal_basin_2d expt
641     o added pkg/debug functions for tracing code in fatal crashes
642     o tidied pkg/monitor to use MONITOR_OPTIONS.h
643     o new fn in pkg/monitor to stop model if solution grows too big
644     o removed lots of single quotes from comments
645    
646    checkpoint50e_post
647    o make KPP work with PTRACERS
648     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
649       nearly a copy of kpp_transport_s
650     - there is no analogue to SurfaceTendencyS, so I have to use
651       gPtr(of the surface layer) instead
652    o add a new platform SunFire+mpi (SunFire 15000) to genmake
653    checkpoint50e_pre
654    
655    checkpoint50d_post
656    o change kpp output from multiple-record state files to single-record state
657      files analogous to write_state.F
658    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
659      analogous to the cg2d-related output.
660    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
661      so that writing to internal file fn (with length 512) fails.
662    checkpoint50d_pre
663    
664    checkpoint50c_post
665    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
666    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
667    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
668    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
669    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
670    
671    checkpoint50c_pre
672    Merging from release1_p13:
673    o bug fix for pkg/seaice dynamic solver
674    o Added SEAICE_initialHEFF to pkg/seaice
675    
676    checkpoint50b_post
677    o store u*,v* in gU,V instead of in guNm1,gvNm1
678    o in order to put the momForcing out of the Adams-Bashforth:
679      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
680      to timestep.F
681    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
682    o re-generate output for highly sensitive test-exp:
683       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
684    
685    checkpoint50b_pre
686    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
687    o corrected CPP option mismatch in exf_Bulk... functions for case
688      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
689    
690    checkpoint50a_post
691    o Bug fix for merging between c50 and KPP.
692      ikey was passed from thermodynamics to kpp_calc via
693      common block rather than being recomputed in kpp_calc,
694      in contradiction with new key itdkey.
695      New key ikppkey created, and tamc.h headers updated.
696    
697    checkpoint50
698    - 2nd step of merge with ecco-branch:
699      merge changes in ecco-branch back into main trunk
700    - bug fix in find_alpha
701    - more storing in gmredi_calc_tensor.F, kpp_routines.F
702    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
703    - merged some sliced AD support routines
704    
705    checkpoint49
706    merged from ecco-branch:
707    o exf:
708      - Enable initialisation of forcing fields to constant
709        (runtime) values.
710      - in exf_getffields.F
711        Reduce i-/j-loop to interior domain, discarding overlaps.
712        That also fixes wrong TAF-key computations for key_1, key_2
713        with bulf formulae.
714      - exf_init.F modify #ifdef for exf_init_evap
715      - exf_getffieldrec.F, ctrl_getrec.F
716        The following INT-usages are not safe:
717          fldsecs  = int(fldsecs/fldperiod)*fldperiod
718          fldcount = int(fldsecs/fldperiod) + 1
719        and were modified.
720    o autodiff: checkpoint_lev...
721      - updated storing for bulk formulae (some arrays were missing)
722      - added state for seaice package
723      - synchronized with main branch
724    o DIVA:
725      Modif.s in
726      - the_main_loop.F
727      - the_model_main.F
728      and added cost_final_restore.F cost_final_store.F
729      o With these changes, it is possible to fully separate
730        the first forward run to compute the cost function (mdthe_main_loop)
731        and adjoint runs over individual DIVA intervals (adthe_main_loop)
732        into separate model executions.
733        This enables better tuning of DIVA to given queue sizes.
734      o Loss of cost function value in consecutive DIVA runs is
735        fixed by storing to 'costfinal' file.
736      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
737        beginning/end of adjoint integration is accounted for.
738      The current changes apply to TAF-1.4.26.
739      TAF has one remaining bug, requiring one manual change
740      (see MITgcm manual).
741    o cal: synchronized between MAIN and ecco-branch
742    
743    checkpoint48i_post
744    o Changes to restore differentiability of code w.r.t. previous tag
745      (mostly adding new routines to make list and replacing
746      pressure by totPhiHyd).
747    o Updated and merged grdchk package
748      - has both ADM and TLM checks
749      - works for single- and multi-proc.
750      - output cleaned
751      - worked successfully for parallel DIVA
752    o genmake:
753      - Adding -platform=SP4
754      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
755    o Modif. for DIVA:
756      ctrl_unpack should not be called in intermediate DIVA interval.
757      (similar thing would apply for active files such as
758      tbar, sbar, psbar, which should not be reinitialised;
759      only relevant for ecco-branch)
760    
761    checkpoint48h_post
762    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
763    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
764    o Added SEAICE_initialHEFF to pkg/seaice
765    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
766    
767    checkpoint48g_post
768    --- EOS:
769    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
770      store total Potential in totPhyHyd for diagnostics & EOS.
771    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
772    --- Pressure/geopotential gradient:
773    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
774    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
775      ( changes results of global_ocean_pressure )
776    o NLFS + z-coord.: add eta*Rho' contribution.
777    o accurate phiHyd when using interface-W at the middle between 2 centers
778     ( changes results of ideal_2D_oce )
779    o includes r* 2nd term in potential gradient.
780    
781    checkpoint48f_post
782    Merging from release1_p12:
783    o Modifications for using pkg/exf with pkg/seaice
784      - improved description of the various forcing configurations
785      - added basic radiation bulk formulae to pkg/exf
786      - units/sign fix for evap computation in exf_getffields.F
787      - updated verification/global_with_exf/results/output.txt
788    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
789      (SBO) core products, including oceanic mass, center-of-mass,
790      angular, and bottom pressure (see pkg/sbo/README.sbo).
791    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
792      to avoid negative values in shallow regions.
793      - updated verification/natl_box/results/output.txt
794      - updated verification/lab_sea/results/output.txt
795    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
796    o Added useSingleCpuIO option (see PARAMS.h).
797    o Updated useSingleCpuIO option in mdsio_writefield.F to
798      work with multi-field files, e.g., for single-file pickup.
799    o pkg/seaice:
800      - bug fix in growth.F: QNET for no shortwave case
801      - added HeffFile for specifying initial sea-ice thickness
802      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
803    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
804      kpp_transport_t.F, forward_step.F, and the_main_loop.F
805    o pkg/seaice:
806      - adjoint-friendly modifications
807      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
808    
809    checkpoint48e_post
810    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
811    o dynamics: change definition of computational domain & adapt mom_fluxform
812      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
813    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
814        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
815        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
816        global_ocean.90x40x15 global_with_exf global_ocean_pressure
817        inverted_barometer solid-body.cs-32x32x1
818      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
819    
820    checkpoint48d_post
821    o in preparation for r*:
822     a) use pre-computed gradient of hydrostatic potential:
823        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
824     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
825        => affects results of glob_oce_pressure (different truncation error)  
826      update output.txt of ideal_2D_oce & global_ocean_pressure
827    
828    checkpoint48d_pre
829    o in preparation for r*:
830      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
831      pass the 2 comp. of the grad. as arguments to momentum S/R.
832      but for the moment, only used if it does not change the results.
833    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
834    
835    checkpoint48c_post
836    Modifications in treatment of initial flux forcing controls
837    to avoid extra storing of flux fields.
838    
839    checkpoint48c_pre
840    o Added tidal_basin_2d experiment (currently 1D!)
841    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
842    
843    checkpoint48b_post
844    o r* coordinate added in #ifdef NONLIN_FRSURF block.
845     (modification to pressure gradient not yet implemented)
846    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
847      (for U & V) that are used for vertical advection of momentum.
848    
849    checkpoint48a_post
850    o In preparation for r*, use temp. array to compute vertical transport
851       in flux-form momentum pkg. => change results of few test-exp.
852      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
853                        lab_sea, natl_box & plume_on_slope
854    
855    checkpoint48
856    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
857    
858    checkpoint47j_post
859    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
860    o moved adexch from forward_step to addummy_in_stepping
861    o added exch in ctrl_map_...
862    o aveFreq.=0. at end of cost_final to avoid overwrite in
863      reverse checkpointing loop
864    o Yet more changes in gmredi:
865      * adgmredi_calc_tensor
866        avoiding all recomputation of gmredi_slope_limit
867      * adgmredi_x/y/rtransport
868        added flag for excessive storing to avoid recomp. of
869        u/v/rtans, dTdx/y/z
870        -> this is not really necessary and very memory-consuming
871      * adgmredi_slope_psi:
872        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
873      * gmredi_slope_limit
874        re-activated full calculation of taperfct for case 'ac02'
875    o updating verification/ adjoints of carbon, global_ocean.90x40x15
876    
877    checkpoint47i_post
878    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
879    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
880      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
881    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
882    o gmredi: fix few bugs.
883    
884    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
885    This will be a good checkpoint to plug into the ecco-branch.
886    o few modif.'s to get latest version adjointed
887      (mainly kick out code in ini_linear_phisurf)
888    o modif's to run adjoint with exactConserv
889    o case GM_BOLUS_ADVEC should be cleaned
890      S/R gmredi_slope_psi should be cleaned
891    o verification/carbon now has exactConserv=.TRUE.
892    
893    checkpoint47g_post
894    o time-average AIM output: becomes independent from statvars time-average
895      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
896    o After TAF bug fix:
897      Tested adjoint of gmredi package.
898      Tests were done with checkpoint47 rather than with latest
899      checkpoint47f_post since the latter is broken for the adjoint
900      verification/carbon/ contains both ADM and TLM gradient checks.
901    Here they are, before they get changed/lost/stolen.
902    Mostly modif.'s to fix numerical sensitivities.
903    Gradient checks OK for
904    - GM_taper_scheme:
905      * clipping
906      * ac02
907      * linear
908      * glw91
909      * dm95
910      * ldd97
911    - GMREDI_OPTIONS:
912      * GM_VISBECK_VARIABLE_K
913      * GM_NON_UNITY_DIAGONAL
914      * GM_EXTRA_DIAGONAL
915      * GM_BOLUS_ADVEC
916    in conjunction with data.gmredi parameters to be checked in
917    in a few minutes under verification/carbon/code/
918    
919    checkpoint47f_post
920    Merging from release1_p10:
921    o modifications for using pkg/exf with pkg/seaice
922      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
923        and SEAICE_EXTERNAL_FLUXES
924      - pkg/exf CPP options EXF_READ_EVAP and
925        EXF_NO_BULK_COMPUTATIONS
926      - usage examples are Experiments 8 and 9 in
927        verification/lab_sea/README
928      - verification/lab_sea default experiment now uses
929        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
930    
931    checkpoint47e_post
932    o created a tag prior to creating a branch
933    
934    checkpoint47d_post
935    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
936      at the bottom boundary had an erroneous half slip boundary condition
937    o added bottom drag and no slip boundary condition capabilities to
938      oceanic pressure coordinates code
939    o added new verification experiment global_ocean_pressure, this experiment is
940      also described in the tutorial section of the manual
941    checkpoint47d_pre
942    
943    checkpoint47c_post
944    o Added a verification experiment for a global cubed-sphere ocean run
945      -  verification/global_ocean.cubed32x32x30
946      -  uses pkg/therm_seaice and pkg/bulk_forcing
947    
948    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
949    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
950      when using P-coordinate; only implemented for atmospheric config.
951    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
952      NOTES: requires option NONLIN_FRSURF to be "#define".
953    o update advect_xz/results/output.txt (left from checkpoint44g_post)
954    
955    checkpoint47b_post
956    Merging from release1_p9:
957    o pkg/seaice
958      - removed GOTO's and added taf directives
959      - double precision constants to reduce the g77 (Linux)
960        to F77 (SGI) differences reported in release1_p8
961    o tools/genmake
962      - added SGI options
963    o verification/testscript
964      - updated to that of checkpoint47a_post
965    o verification/global_ocean.90x40x15/input/eedata
966      - modified for SGI f77 compatibility
967    o verification/lab_sea
968      - added description of sea-ice model
969      - added missing matlab routines
970      - added test of thermodynamics parallelization
971    
972    checkpoint47a_post
973    o new pkg: aim_v23
974     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
975       for now, keep the same surface forcing as before.
976     - Part-Cell implemented into AIM; check that Heat & Water are conserved
977     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
978     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
979    o add diagnostic of surface correction term in monitor output
980    
981    o bulk_force and therm_seaice
982    - Two packages:  bulk_force (Bulk forcing)
983      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
984    - Earlier integration from Stephaine Dutkiewicz
985      and Patrick Heimbach.
986    - Two ifdef statements for compile time,
987       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
988    
989    checkpoint47
990    differentiable version of checkpoint46n_post
991    o bug fix in quasihydrostaticterms
992    o * "clean" adjoint code (in terms of extensive recomputations)
993        can now be obtained for all GMREDI options (i.e. for
994        - GM_VISBECK_VARIABLE_K
995        - GM_NON_UNITY_DIAGONAL
996        - GM_EXTRA_DIAGONAL
997        - GM_BOLUS_ADVEC )
998      * However, wrong gradient check problem remains unsolved.
999      * New CPP options have been introduced for different
1000        tapering schemes
1001    o external_fields_load now part of differentiation list
1002    o pressure needs multiple storing;
1003      would be nice to have store_pressure at beginning or
1004      end of forward_step, e.g. by having phiHyd global (5-dim.)
1005      (NB: pressure is needed for certain cases in find_rho,
1006      which is also invoked through convective_adjustment).
1007    o recomputations in find_rho for cases
1008     'JMD95'/'UNESCO' or 'MDJWF' are OK.
1009    o #define ATMOSPHERIC_LOADING should be differentiable
1010    o ini_forcing shifted to begining of initialise_varia
1011    o Incorporating QNVS line search routines into MITgcm
1012      (this is separate code, and therefore not under pkg)
1013      lsopt/, optim/
1014    o Updated verification/carbon/
1015      - #define GM_VISBECK_VARIABLE_K
1016      - GM_taper_scheme    = 'ldd97'    
1017    
1018    checkpoint46n_post
1019    Merging from release1_p8:
1020    o verification/natl_box:
1021      updating new external_fields_load routine
1022    o New package: pkg/seaice
1023      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
1024      The sea-ice code is based on Hibler (1979-1980).
1025      Two sea-ice dynamic solvers, ADI and LSR, are included.
1026      In addition to computing prognostic sea-ice variables and diagnosing
1027      the forcing/external data fields that drive the ocean model,
1028      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
1029      The implied surface heat flux is then stored in variable
1030      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
1031      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
1032      non-local transport term.  Because this call precedes model
1033      thermodynamics, temperature under sea-ice may not be "exactly" at
1034      the freezing point by the time theta is dumped or time-averaged.
1035      N.B.: fairly large differences in accuracy occur across
1036            different platforms/compilers; comparison between
1037            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
1038            generated output gives:
1039       T           S           U           V
1040      C D M    c        m  s        m  s        m  s        m  s
1041      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
1042      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
1043      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
1044    
1045      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
1046    o GAD:
1047      - generated new common blocks to account for call of
1048        same gad routines with differing traceridentities
1049        (needed to modify tracerIdentity indices in GAD.h)
1050      - generated separate common blocks for case useCubedSphereExchange
1051        (Department of Futurology)
1052      - parameter lists to gmredi_?transport: added tracerIdentity
1053      - added new key indices to tamc.h
1054    o external_fields_load:
1055      - added this routine to TAF list
1056      - needed to make some common blocks global and additional storing
1057        along the same lines as exf package (checkpoint_lev?_directives.h)
1058    o exf:
1059      updated external forcing package
1060      - bug fixes carried over from ecco-branch
1061        (missing OBCS_OPTIONS.h in two routines)
1062      - enable easy to use "no forcing".
1063      - added exf I/O for atmospheric loading
1064      - added exf I/O for runoff data
1065      - transfered scaling between exf <-> MITgcm to exf namelist
1066    o Adding new verification experiment global_with_exf.
1067      This verification experiment is almost identical to the
1068      global_ocean.90x40x15 experiment, except that it uses
1069      the exf (and cal) package instead of the
1070      external_fields_load routine (cf README file).
1071    
1072    checkpoint46m_post
1073    o modified testscript to return -- when there are no lines of "%MON" output
1074    o added new flag "quasiHydrostatic" for QH mode
1075      and new routine quasihydrostaticterms()
1076    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
1077      New routine: mom_u_coriolis_nh()
1078    o fixed sign of non-hydrostatic metric terms in u and v equations.
1079      Depend on correct sign of gravitySign.
1080    o added work.pc* to .cvsignore in aim directories using ifc
1081    o introduced flag for controllin non-hydrostatic metric terms
1082    o removed gravitySign from PARM04
1083    o switched to g77/ifc from pgf77 in aim experiments
1084    
1085    checkpoint46l_post
1086    o made convective adjustment work with pressure coordinates:
1087     - changed the direction of k-loop in convective_adjustment.F for the
1088       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
1089     - adjusted the reference pressure k-index in convective_adjustment.F
1090     - adjusted the convection condition in convect.F (in analogy to
1091       calc_ivdc.F)
1092     - convective_adjustment no longer computes anything on the halos
1093     - removed the warnings about negative salinity from find_rho.F and
1094       find_alpha.F; instead the new routine look_for_neg_salinity, called
1095       at the beginning of find_rho, find_alpha, and find_beta, does a
1096       check of the entire slice, if CPP-option
1097       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
1098    checkpoint46l_pre
1099    
1100    checkpoint46k_post
1101    o fixed the verification/global_ocean.90x40x15 experiment:
1102     - new bathymetry (the world according to A., JMC, and M.)
1103     - new initial fields and forcing fields (*.bin files)
1104     - new POLY3.COEFFS (for the next release one should switch to a full
1105       equation of state: JMD95P or MDJWF)
1106     - fixed several errors and redundancies in the data file
1107     - experiment uses looped cells
1108     - added matlab directory with diagnostic scripts for plotting of output
1109    
1110    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
1111     - read AIM physics parameters from a file (data.aimphys)
1112     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
1113    
1114    checkpoint46j_post
1115    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
1116    o move wVel computation at the end of the time step, in S/R integr_continuity
1117    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
1118    o update timeave pkg for wVel diagnostic.
1119    checkpoint46j_pre
1120    
1121    checkpoint46i_post
1122    o Clean up AIM package (and keep the results unchanged):
1123      include CPP_OPTION and use IMPLICT NONE in all routines ;
1124      declare all the variables _RL ; use _d 0 for all numerical constants.
1125      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
1126    
1127    checkpoint46h_post
1128    o cleaned up the use of rhoNil and rhoConst.
1129      - rhoNil should only appear in the LINEAR equation of state, everywhere
1130        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
1131        and the dynamical equations are all divided by rhoConst
1132    o introduced new parameter rhoConstFresh, a reference density of fresh
1133      water, to remove the fresh water flux's dependence on rhoNil. The default
1134      value is 999.8 kg/m^3
1135    o cleanup up external_forcing.F and external_forcing_surf.F
1136      - can now be used by both OCEANIC and OCEANICP
1137    checkpoint46h_pre
1138    
1139     Added code to convert surface volume flux (fresh water) into
1140     a mass flux when using P coordinates in the ocean (OCEANICP).
1141     Note: It assumes you have set rho0=rhoConst=density of fresh water.
1142    
1143    checkpoint46g_post
1144    o Include a new diagnostic variable phiHydLow for the ocean model
1145      - in z-coordinates, it is the bottom pressure anomaly
1146      - in p-coordinates, it is the sea surface elevation
1147      - in both cases, these variable have global drift, reflecting the mass
1148        drift in z-coordinates and the volume drift in p-coordinates
1149      - included time averaging for phiHydLow, be aware of the drift!
1150    o depth-dependent computation of Bo_surf for pressure coordinates
1151      in the ocean (buoyancyRelation='OCEANICP')
1152      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
1153        Theta, Salinity, and Pressure in the parameter list. This routine is
1154        presently contained in find_rho.F. This routine does not give the
1155        correct density for 'POLY3', which would be a z-dependent reference
1156        density.
1157    o cleaned up find_rho
1158      - removed obsolete 'eqn' from the parameter list.
1159    o added two new verification experiments: gop and goz
1160      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
1161    checkpoint46g_pre
1162    
1163    checkpoint46f_post
1164    o Enable tangent linear (forward mode) gradient checks:
1165      - extended active file handling to g_... files
1166      - added TANGENT_SIMULATION to theSimulationMode
1167      - extended grdchk package accordingly
1168    o added tangent linear setup in verification/carbon/code_ftl
1169    o added adjoint setup in verification/front_relax/code_ad
1170    
1171    checkpoint46e_post
1172    o Added new equation of state -> MDJWF
1173      - EOS of McDougall et al., 2002, JAOT, submitted
1174      - caveat: the equation of state is only valid for a smaller (more
1175        realistic?) range of values than JMD95P/Z and UNESCO
1176      - added masks to the calculation of pressure in store_pressure
1177      - added more check values for density in check_eos (ini_eos.F), some of
1178        the old check values are out of the range of the MDJWF-eos, so don't
1179        expect perfect matches for those
1180    checkpoint46e_pre
1181    
1182    checkpoint46d_post
1183    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
1184      'OCEANICP', also initialised field pressure correctly in ini_eos in the
1185      case of pressure coordinates. eosType='JMD95Z' in
1186      combination with buoyancyRelation='OCEANICP' now causes an error.
1187    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
1188      in find_alpha/beta.
1189    checkpoint46d_pre
1190    
1191    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
1192      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
1193    
1194    checkpoint46c_post
1195    o Changes necessary for ocean in p-coordinates
1196     -  Added new buoyancy relation = 'OCEANICP'
1197     -  Added new parameters = gravitySign (this used to be contained inside
1198        the factor dRdZ which I added when we first switched to R coordinates).
1199     X GM/Redi is not compatible (yet)
1200     X bottom drag and no-slip need to be debugged.
1201    checkpoint46c_pre
1202    
1203    checkpoint46b_post
1204    o Added new equation of state -> JMD95Z and JMD95P
1205      - EOS of Jackett and McDougall, 1995, JAOT
1206      - moved all EOS parameters into EOS.h
1207      - new routines ini_eos.F, store_pressure.F
1208    o Added UNESCO EOS, but not recommended because it requires
1209      in-situ temperature (see JMD95)
1210    o Modified formatting for knudsen2.f in utils/knudsen2 and added
1211      unesco.f to be used with POLY3
1212    checkpoint46b_pre
1213    
1214    checkpoint46a_post
1215    o Added (atmospheric) pressure loading
1216      - new field in FFIELDS.h, etc...
1217      - new cpp flag ATMOSPHERIC_LOADING
1218    o Changed hFacC to _hFacC in calc_phi_hyd.F
1219    o Added SHORTWAVE_HEATING to some files for consistency
1220    checkpoint46a_pre
1221    
1222    checkpoint46
1223    further merges from release1_p5
1224    o new ctrl package
1225      - adopted from ECCO environment to enable optimization
1226      - added Eliassen Palm fluxes to controls
1227    o added Eliassen Palm flux controls to gradient check package
1228    o cost package
1229      - Compatible with new ctrl package
1230      - added Eliassen Palm cost hooks
1231      - modif's of existing cost functions
1232    o Adjoint-related bug fixes in kpp:
1233      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
1234      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
1235    o autodiff package
1236      - flow directives:
1237        + new for S/R do_the_model_io
1238        + enhanced for S/R checkpoint
1239        + new gmredi.flow
1240      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
1241        disable adcommon.h/g_common.h by default.
1242      - fixed problem for adjoint of global_max
1243    o modified verification/carbon/
1244    o New setup for adjoint of global_ocean
1245    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
1246    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
1247    o incorporated hooks for sponge layer code (external_forcing.F)
1248    
1249    checkpoint45d_post
1250    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
1251    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
1252      (affects plume_on_slope "cg2d" output)
1253    o add new parameter deltaTfreesurf for free-surface time stepping
1254    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
1255    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
1256    o change phiMin in exp1 (to agree with documentation)
1257    o add new flags:
1258     - T,S forcing inside/outside Adams-Bashforth
1259     - turn off temp,salt advection and/or forcing
1260     - for each tracer, define internal flag for multiDimAdvection & A-B
1261    o monitor: change definition of KE to check conservation of Energy
1262    
1263    checkpoint45c_post
1264    o Removed f90 comments ("!")
1265    o Modified initialisations to enable exf package for MITgcm
1266      (without invoking ECCO_PACKAGE).
1267    o modifications to gradient check package (Martin Losch)
1268      - enable centered differences
1269      - modified format of standard output
1270    
1271    checkpoint45b_post
1272    o cleaned exchange calls in cg2d
1273    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
1274    o included CPP option SINGLE_LAYER_MODE in thermodynamics
1275      to configure barotropic setup (Martin Losch)
1276    o moved some initialisations within bi,bj loop in dynamics
1277      (TAF flow dependency)
1278    o in initialise_varia, moved call packages_init_variables
1279      before convective_adjustment_init
1280      (corresponding adjustment of TAF tape initialisation).
1281    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
1282    
1283    checkpoint45a_post
1284    o compute Rho over the whole domain (extend iMin,jMin indices)
1285    o specific exchange for X-slice domain (case Ny=1)
1286    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
1287    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
1288    
1289    checkpoint44h_post = checkpoint45
1290    o Fix to restore differentiability:
1291      place at which packages_init_variables is called in
1292      initialise_varia is crucial for reverse control flow.
1293    o modifications in GMRedi to enable stable adjoint
1294      (corresponding modif's in thermodynamics, dynamics)
1295    o added missing hook for sponge layer code in external_forcing
1296    o modified test cost functions
1297    o storing in gad_advection (plus removal of write(0,*)!
1298    o missing headers TR1.h added in convective_adjustment routines
1299    o errorMessageUnit set non-equal zero in eeboot
1300      (conflict on some platforms, e.g. IBM SP3)
1301    o modified carbon verif.
1302    
1303    checkpoint44h_pre
1304    o vertical grid option: allow to put the Interface at the middle between
1305      2 cell-centers ; replace delZ in pkg/kpp by drF.
1306    o GM Advective form: Tracers are advected using the residual transport (=
1307      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
1308    
1309    checkpoint44g_post
1310    o fix surface correction term in multiDimAdvection (affects plume_on_slope
1311      results) ; ifdef missing in thermodynamics.F
1312    
1313    checkpoint44f_pre,checkpoint44f_post
1314    o added PTRACERS package
1315      This allows an arbitrary number of passive tracers to be integrated
1316      forward simultaneously with the dynamicaly model.
1317      + Implemented so far:
1318        - basic forward algorithm (time-stepping, advection, diffusion, convection)
1319        - I/O and checkpointing
1320        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
1321      + Not implemented so far:
1322        - KPP
1323        - OBCS
1324      + No specific example supplied (yet) but global_ocean.90x40x15 has the
1325        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
1326        line in data.pkg.
1327      + This package is disabled by default since it increases storage.
1328    
1329    
1330    o testscript: added -cleanup option
1331    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
1332                 b) enable to filter 2D fields.
1333    
1334    checkpoint44e_pre,post
1335    o re-wrote convective adjustment to use pre-calculated weights
1336      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
1337      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
1338      Original calls to convect() still in place.
1339    
1340    chkpt44d_pre,post
1341    o added missing EXCLUDE_MONITOR flags
1342    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
1343      (incompatible typ in MIN/MAX expressions caused problems
1344      on IBM SP3)
1345    o in genmake added variable MAKEDEPEND
1346      plus resetting for case SunOS
1347    o added timer_stats.c routine for IBM SP3
1348    o removed variables in dynamics
1349    !!! I forgot to create tag chkpt44d_pre !!!
1350    !!! But chkpt44d_pre = chkpt44c_post    !!!
1351    
1352    o real fresh water flux implemented with non-linear free-surface.
1353    
1354    chkpt44c_pre,post
1355    o few fix (mask in shap_s2, EmPmR in external_field_load,
1356      USE_NATURAL_BCS in solve_for_P);
1357    o add arguments myIter & myTime to S/R obcs_calc & solve_for_P
1358    
1359    checkpoint44b_pre/_post
1360    o merge of relevant stuff from the ecco-branch:
1361      - genmake: removed $S64 overwrite for case SunOS
1362      - pkg/exf: update and corrections for field swapping and obcs
1363      - pkg/ecco: parameter lists for the_model_main, the_main_loop
1364                  harmonized between ECCO and MITgcm
1365      - pkg/autodiff: added flow directives for obcs, mdsio_gl_slice
1366                      updated checkpointing_lev... lists for obcs
1367      - model/src: minor changes in forward_step, plot_field
1368                   added directive for divided adjoint in the_main_loop
1369      - pkg/mdsio: added mdsio_gl_slice
1370    
1371    o check parameters & config (chkpt44a_pre,post)
1372    o OBC and NonLin_FrSurf.
1373    
1374    checkpoint44
1375    o fix bug in mom_vi_del2uv
1376    o select when filters are applied ; add options to zonal_filter (data.zonfilt)
1377    o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
1378    o update AIM experiments (NCEP input files)
1379    o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
1380    o added some stuff for AD
1381    
1382    checkpoint43
1383    o added two new advection tests
1384    o added global 4x4 degree ocean test
1385    o added test of H&S94 with free surface on cube
1386    o some final mods for gradient check, adjoint,...
1387    
1388    checkpoint42
1389      Fixed AD-related problems:
1390    o Store directives up-to-date with re-arranged Adams-Bashforth
1391      (mainly thermodynamics.F)
1392    o New store directives for multi-dim. advection schemes
1393      * new CPP flag ALLOW_MULTI_DIM_ADVECTION
1394      * new common block and key passkey
1395      (mainly gad_advection.F)
1396    o Modified store directives for split of dynamics/thermodynamics
1397      for the case ALLOW_KPP
1398    o Cleaned argument list for timestep_tracer.F
1399    
1400    checkpoint41
1401    o re-formatted/added comments in prologues of key subroutines
1402      to work with protex
1403    
1404    checkpoint40
1405    o moved calc_gs, calc_gt and calc_tr1 back to model/src
1406    o added FLT (floats) package from Arne along with demo. experiment
1407    o re-arranged Adams-Bashforth scheme for tracers to allow easier
1408      implementation of forward-in-time forcing terms
1409    o more mods for non-linear free-surface including new variable
1410    o modified multi-dim method to work on cube
1411    o bug fix in KPP (from DM)
1412    
1413    checkpoint40pre9
1414    o added DST advection schemes
1415    o fix MPI bug on SGI's
1416    o modifications for non-linear free-surface
1417    o fixed conditionals for fixed flow/passive tracer only mode
1418    o added tension/strain form of stress tensor
1419    o changes to commenting of arguments for TAF/TAMC
1420    o added/updated many matlab scripts
1421    o added multi-dimensional advection method for tracers
1422      
1423    checkpoint40pre8
1424    o new package rw/
1425      Added method for dumping intermediate local arrays:
1426      mdsio_writetile - same as mdsio_writefield except works from inside
1427                        bi,bj loop
1428      mdsio_writelocal - same as mdsio_writetile except works for local
1429                         arrays
1430      write_local_r? - higher-level wrapper for mdsio_writelocal
1431      Controlled by diagFreq. Defaults to zero (ie. no dumps)
1432      Example given at end of mom_vecinv.F that dumps some local arrays.
1433    o replaced calc_mom_rhs.F by mom_fluxform.F/mom_vecinc.F to
1434      control flux-form versus vector invariant code.
1435      Switch is runtime flag vectorInvariantMomentum (defaults to false)
1436      or genmake -DISABLE ...
1437    o TAMC-related update to cope with mom_fluxform.F/mom_vecinc.F
1438      (additional storing is now needed for case vecinv;
1439      currently nothing implemented to switch this storing off
1440      in case fluxform is used since no CPP flag available).
1441    
1442    checkpoint40pre7
1443    o bug fix in dynamics.F
1444      calc_viscosity called before k=1,Nr loop.
1445    o added some #ifdef's ALLOW_PASSIVE_TRACER
1446    o cleaned initialisations in ctrl_map_ini
1447      related to TAF
1448    
1449    checkpoint40pre6
1450    o split dynamics into thermodynamics & dynamics
1451    o corresponding split of calc_diffusivity into
1452      calc_diffusivity, calc_viscosity
1453      (kpp_calc_diff, kpp_calc_visc).
1454    o Added diffkr, kapgm to control variables
1455    o bug fix in gmredi_slope_limit for ldd97
1456    
1457    checkpoint40pre5
1458    o proper initialization of Adams-Bashforth time stepping
1459      + uses forward step for very first step of model (iter=0)
1460    o re-generated *all* output since almost all output is modified by this
1461      change (sorry but we've been putting this one off for about 2 years)
1462      + natl_box, aim.5l_Equatorial_Channel and aim.5l_zon-ave were
1463        *not* regenerated since they are already out of date and I don't
1464        want to create the impression that they are suddenly working.
1465    o removed KAP stuff for DEC's
1466    o modified/added many .cvsignore files in */code and */input
1467    o added new expt "solid-body.cs-32x32x1"
1468      + this uses an alternative form of ini_curvilinear_grid.F which
1469        is not necessarily any better than the current one...
1470    
1471    checkpoint40pre4
1472    o added re-initialisations of utrans,vtrans,rtrans in
1473      calc_common_factors which are crucial for TAF.
1474    o extended iMin,jMin range for calc_common_factors,
1475      calc_diffusivity
1476    o added option ALLOW_PASSIVE_TRACER
1477    o a few minor updates and fixes
1478    
1479    checkpoint40pre3
1480    o created calc_gtr1.F for gad package
1481    o split the_main_loop and re-introduced forward_step
1482    o some recomputations of nIter0 for TAMC
1483    
1484    checkpoint40pre2
1485    o Updated to latest branch of AJA, JMC
1486    o Added gradient check package
1487    o Added routines for passive tracer handling
1488    o Added carbon sequestration sensitivity experiment
1489    
1490    checkpoint39
1491     o Modifications and fixes to support TAMC
1492       (mainly missing or wrong directives)
1493     o Corrected common blocks when fooling TAMC to produce adjoint I/O
1494       in addummy_in_stepping
1495     o Updated verification/vero/ (bug fixes in code/, correct pickups in input/)
1496     o Enabled "sliced" (xz-,yz-) exchanges, needed for obcs.
1497     o Included following packages:
1498       cal: calendar
1499       exf: external forcing
1500       ecco: essential routines to control use of cal, exf
1501             (NB: this is not the full ECCO environment)
1502     o disabled some packages by default in genmake
1503    
1504    checkpoint38
1505     o see notes_c37_adj.txt
1506     o corrected wrong layer index in external_forcing_t
1507     o replaced the_main_loop/forward_step by the_main_loop
1508     o removed forceoutput from write_state
1509       (replaced criteria for initial/final state)
1510     o added runtime flag for pre-C35 pickups: usePickupBeforeC35
1511    
1512    checkpoint37
1513     o mdsio.F routine split and packaged in pkg/mdsio
1514       (mdsio.F and mdsio_gl.F still exist in eesupp/src but are not
1515        used unless genmake -disable=mdsio)
1516     o allow a more precise surface-geopotential gradient for the atmosphere
1517       taking into account the change in space of Alpha (=1/rho) at the surface.
1518     o variable "etaN" (replace cg2d_x) is the surface R-anomaly [r unit]
1519       (ocean: sea surface height [m] / atmos: surface pressure anomaly [Pa])
1520     o Change units: Phi_Hydrostatic (=phiHyd), Phi_Surface(=cg2d_x) and
1521       Phi_NonHydrostatic (=cg3d_x), all have now the dimension of a potential
1522       [m2/s2] (pressure/rhoConst in the ocean ; Geo-Potential in the atmosphere).
1523     o Time-Average diagnostics defined as a pseudo package "timeave".
1524     o pickup files : old pickup (before c35) did not work with new code (c35
1525       and after) unless activating 2 commented lines in initialise-varia.
1526     o Non-Hydrostatic pickup file Pb fixed.
1527     o bug with Rigid-lid version (since c35) fixed.  
1528    
1529    checkpoint36
1530     o implement Crank-Nickelson barotropic time-stepping
1531     o recover Time-Average diagnostics
1532     o fix Pb in checkpoint (PR#19)
1533     o AIM become a standard package ; clean unused CPP_kees
1534    
1535    checkpoint35
1536     o subtantial rewrite of dynamics.f
1537     o allows staggered time-stepping
1538     o packaged obcs, aim (Atmospheric Physics), zonal_filt, shap_filt
1539     o added bottom drag (linear + quadratic)
1540    
1541    checkpoint34
1542     o Modified exchange routines for correct reverse simulation.
1543     o Added verification output to comply with bug fix in impldiff.F
1544       as of c33 (exp2, natl_box).
1545     o Corrected store directives in dynamics.F
1546     o Corrected array boundaries in impldiff.F
1547     o Corrected array dimensions in gmredi.
1548       Added temporary scalars to avoid storage by TAMC (gmredi, kpp).
1549     o Added routine GLOBAL_SUM_INT to global_sum.F
1550     o Added mdsio_gl.F for ECCO purposes.
1551    
1552    checkpoint33
1553     o Fixed bug in lower BC in impldiff.F
1554     o Fixed confusion about units of forcing arrays in FFIELDS.h
1555       namely Fu,Fv,Qnet,Qsw,EmPmR:
1556       - Removed verification/natl_box/code/external_fields_scale.F
1557         (did not differ from that in model/src)
1558       - Changed units of fu,fv,Qnet,Qsw,EmPmR back to proper units
1559         (see FFIELDS.h for description)
1560       - Scale fu,fv,Qnet,Qsw,EmPmR when used in external_forcing_surf.F,
1561         kpp_calc.F and kpp_transport_t.F
1562       - Removed model/src/external_fields_scale.F and calls to it
1563       - verification/natl_box uses flux data with "atmospheric" sign so
1564         a special version of external_fields_load.F is used to
1565         change the data as it's read in. This way, the arrays
1566         have the right units and signs at all times tha a user could
1567         possibly use them.
1568     o Corrected genmake to delete a temporary file during configuration
1569    
1570    checkpoint32
1571     o Scaling of forcing fields moved from external_forcing.F to
1572       external_fields_scale.F, called directly after loading fields.
1573     o Surface relaxation terms added to surface tendency fields in
1574       extra subroutine.
1575     o impldiff.F changed to avoid storing by TAMC of huge intermediate
1576       fields.
1577     o Changes in GMRedi to comply with packaging structure.
1578     o Modifications and bug fixes in KPP package.
1579     o Verification experiment for KPP added (verification/nat_box/)
1580    
1581    checkpoint31
1582     o Packages interface brought in line with defined standard
1583       -> new routines packages_...F
1584       -> changes in initialise_fixed.F, initialise_varia.F
1585       -> enables initialisation interface for ECCO package
1586     o Rescaling of external forcing fields immediately after read
1587       (removed from external_forcing.F)
1588       -> new: surface_fields_scale.F
1589       -> affects ini_foorcing.F, external_fields_load.F
1590     o Computation of surface tendencies before tendency updates.
1591       -> new: external_forcing_surf.F
1592     o Change of variable names useGMRedi, useKPP, useECCO
1593     o Further changes in dynamics.F, impldiff.F for TAMC
1594     o Tested for experiments 0, 2, 4.
1595       - not yet tested for GMRedi.
1596       - not yet tested for KPP.
1597    
1598    checkpoint30
1599     o Updates for OBCs
1600     o New experiment for test OBCs (internal_wave)
1601     o New output.txt in verification/exp4/results/
1602     o Updates for KPP: calculation of viscosity corrected, new variables
1603       kpp_dumpFreq and kpp_taveFreq
1604     o CPP'd calls to system routines for TARGET_CRAY_VECTOR (P.H.)
1605       and entry for T90 in genmake
1606    
1607    checkpoint29
1608     o packaged KPP and GM/Redi
1609    
1610    checkpoint28
1611     o Corrected initialization of hFacMin for difference vertical coordinates
1612     o Modified calculation of partial cell thickness to more robust algorithm
1613     o config_summary.F: replaced write_1D_... by write_0D_...
1614       read_write.F: added subroutines write_0D_...
1615     o routines calc_common_factors, calc_gs, calc_gt, calc_phi_hyd, find_rho:
1616       included some initialisations required for TAMC.
1617     o routine calc_isoslopes: modified sqrt computation to make it
1618       differentiable for zero argument.
1619     o routines dynamics, impldiff:
1620       included store directives and tape key computations required for TAMC.
1621     o ALL TAMC related changes are between ifdef ALLOW_AUTODIFF_TAMC
1622    
1623  checkpoint27  checkpoint27
1624   o fixed calc_isoslopes() to so that cancellation of terms in tensor   o fixed calc_isoslopes() to so that cancellation of terms in tensor

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