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revision 1.43 by heimbach, Mon Jul 30 20:47:52 2001 UTC revision 1.347 by heimbach, Mon Sep 20 23:22:57 2004 UTC
# Line 3  $Header$ Line 3  $Header$
3      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
4      ==============================      ==============================
5    
6    checkpoint55a_post
7    o merged code to
8      * prescribe/read time-dependent open boundaries
9        (works in conjunction with exf, cal)
10      * sponge layer code for open boundaries
11      * each boundary N/S/E/W now has its own CPP option
12        (healthy for the adjoint)
13    
14    checkpoint55
15    o up-to-date adjoint of previous breaks
16      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
17      - global_ocean_ebm: adjoint still needs fix (TLM ok)
18      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
19      - carbon: * remove tr1-related adjoint verification
20                * add ptracer as control variable
21    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
22      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
23    
24    checkpoint54f_post
25    o in verification/carbin/ remove experiment related to
26      ALLOW_PASSIVE_TRACER (array tr1 etc)
27      code_ad/ input_ad/ results_ad
28    
29    o add two new packages
30      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
31        + subject to optimization (memory)
32      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
33        + subject to reordering (many GOTOs in the original code)
34        + so far opps is called for every (i,j) point, and then operates in
35          the vertical; one may want to reorder the scheme in order operate in
36          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
37          fields)
38    o overhaul of IO so that we now have flags for MDSIO and/or MNC
39      - all verification tests compile and run with linux_ia32_g77
40      - defaults are compatible with current input files--nothing
41        should change if you were not previously using MNC
42      - MNC output has been added in numerous places (eg. timeave)
43        but there are still a few writes not yet do-able with MNC
44        (this is in progress)
45      - flags now allow for either/or/both use of MDSIO and MNC and
46        documentation will soon follow
47      - numerous small formatting cleanups for ProTeX
48    o add version info (via BUILD_INFO.h) to MNC and stdout
49    
50    checkpoint54e_post
51    o add two new packages
52      - pp81 (Packanowski and Philander, 1981), Richardson number and
53        stratification dependent mixing
54      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
55      - these scheme operate in a similar manner as KPP (without ghat, of
56        course), however there is only one diffusivity that is used for both
57        temperature and salinity (and passive tracers)ç
58    o add offline package
59    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
60      provided by Stephanie Dutkiewicz
61    o genmake2: add ability to search for C compilers and cleanup test output
62      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
63    
64    checkpoint54d_post
65    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
66    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
67      leading to additional shift by 5 days each year of integration
68       (i.e. leading to considerable offset over the years)
69    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
70    o start with no AB and no initial filtering (staggerTimeStep):
71      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
72    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
73      (external loading & cpl import/export stay in forward_step.F)
74    o update coupling interface to work with new staggerTimeStep
75    o change MDSIO ptracers_pickup.
76    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
77    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
78    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
79    
80    checkpoint54c_post
81    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
82      this affects (truncation error) output.txt of test-exp:
83       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
84    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
85    o change Qnet to always be the net heat flux, (+upward).
86      affects (truncation error) output of natl_box exp.: updated
87    o define the max number of passive tracers in PTRACERS_SIZE.h
88    o start to test mnc routinely in exp0
89    o add sea-ice loading (sIceLoad) as a new forcing field.
90    
91    checkpoint54b_post
92    o add testreport "-j JOBS" option for parallel builds (tested and pretty
93       impressive on Altix and Opteron systems)
94    o diagnostics can now write NetCDF files through the mnc package
95    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
96    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
97    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
98      affects (truncation error) output of lab_sea & natl_box exp.: updated
99    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
100    
101    checkpoint54a_post
102    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
103    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
104    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
105    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
106      + internal_wave (shift in writing cg2d_ini_res)
107    checkpoint54a_pre
108    
109    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
110      - modified verification/lab_sea and natl_box_adjoint accordingly
111    
112    checkpoint54
113    checkpoint53g_post
114    o prepare splitting of thermodynamics: store convect.counter in common block
115    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
116      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
117    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
118    o new parameter "nShapS": allow to treat differently S from T (nShapT)
119    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
120    o restore adjointability
121    
122    checkpoint53f_post
123    o modifications that affect AIM experiment results (update output.txt):
124      - no advection of S at top interface Nr (pkg/generic_advdiff)
125      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
126    o AIM pkg:
127      - include stability function into surf.Flux derivative relative to Tsurf
128      - calculate clear-sky radiation & surface temp. change (for diagnostics)
129    
130    checkpoint53e_post
131    o merged cylindrical coord configuration
132    o added rotating_tank experiment
133    checkpoint53e_pre
134    
135    checkpoint53d_post
136    o faulks upgraded: re-generate output.txt that have changed:
137       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
138    o Added Bryan and Lewis, 1979, vertical diffusivity profile
139    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
140    o added Sadourny discretization of Coriolis
141      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
142      - re-enabled use of omega3 (useAbsVorticity)
143    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
144      vector-invariant equations
145      - note: does *NOT* yet use same variable visc. for no-slip BC's.
146    o recoded the lateral boundary conditions for non-hydrostatic w, this time
147      hopefully without new bugs
148      - still to do: biharmonic friction for non-hydrostatic w
149    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
150    o regenerated output for global_ocean_ebm (using -ieee)
151    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
152      of mom_common/
153      - simple re-arrangement of instructions within computing loop
154    checkpoint53d_pre
155    
156    checkpoint53c_post
157    o new version of coupler for AIM+thSIce and Ocean models
158     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
159     - land: change Evaporation of snow
160     - aim with thSIce: fix bug in snow-precip.
161    o changes to calc_gw.F
162     - bug fix for w^2 term near the bottom boundary
163     - (hopefully) improve the lateral slip boundary condtions for use with
164        partial/looped cells
165      - because the bug fix changes two verification experiments anyway (exp5
166        and plume on slope), change the lateral boundary condition from half slip
167        to the value of no_slip_sides
168    o ebm package wasnt quite up to the parallel task. Fixed that.
169    o Adjoint of EBM package + verification
170      * TLM OK
171      * ADM not sufficient accuracy yet (needs further testing)
172    
173    checkpoint53b_post
174    o Commiting new energy balance model to repository
175      * package is pkg/ebm
176      * verif. is verification/global_ocean_ebm
177      * references are in ebm_driver.F
178    C      * X. Wang, P. Stone and J. Marotzke, 1999:
179    C        Global thermohaline circulation. Part I:
180    C        Sensitivity to atmospheric moisture transport.
181    C        J. Climate 12(1), 71-82
182    C      * X. Wang, P. Stone and J. Marotzke, 1999:
183    C        Global thermohaline circulation. Part II:
184    C        Sensitivity with interactive transport.
185    C        J. Climate 12(1), 83-91
186    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
187    C        Destabilization of the thermohaline circulation
188    C        by atmospheric eddy transports.
189    C        J. Climate 7(12), 1870-1882
190    o Will need long integration testing.
191    checkpoint53b_pre
192    
193    o created pkg/mom_common in preparation for variable viscosity code
194    o renamed and split ini_mnc_io
195    o pkg/land: only liquid water can diffuse or run-off
196    o AIM using land: soil wetness availability account for snow
197    o added printMapIncludesZeros to EEPARMS namelist
198    
199    checkpoint53a_post
200    o restore TAMC compatiility for exf_constants.h
201      (no usage of _d in .h)
202    o Additional storing in KPP in an attempt to fix
203      TAMC problem with adjoint of KPP code.
204      (no success...)
205      Identical code works fine with TAF.
206    o Fixed verification/natl_box_adjoint experiments.
207      Initial conditions for Experiments 4 and 5 are now
208      set to "SEAICE_initialHEFF=0", which is more reasonable,
209      and hence gives results closer to that of Experiment 2.
210      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
211    
212    checkpoint53
213    o stable checkpoint with up to date adjoint
214      TLM tests only run for 1st grdchk at the moment. Its unclear if
215      this is a code problem or a problem with resetting code for g_
216      variables that is being autogenerated wrong.
217      Otherwise:
218       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
219       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
220         are both still in chaos following their security messes.
221    
222    checkpoint52n_post
223    o various build (mostly genmake2) changes including:
224      - ability to build/run more easily within Cygwin and MacOS X
225      - more complicated Makefiles with a stronger dependence on Gnu Make
226    o pkg/seaice modifications
227      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
228        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
229        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
230      - changed proxy for geostrophic velocity and updated
231        verification/lab_sea/results/* accordingly
232      - removed ADI dynamic solver from pkg/seaice
233      - replaced all occurrences of 1/CSTICE or 1/CSUICE
234        they caused a segmentation fault under certain circumstances
235      - removed unused field WATR
236    o bug fix in exf-package:
237      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
238         now reflect that.
239    o small fixes in the cal-package:
240      - set reference date to first of January for the 'model'-calendar
241      - failing of cal_CheckDate in cal_FullDate now actually results in a
242        warning
243    o small modifications in exf-package to increase flexibility:
244      - change climtempfreeze from a constant to a runtime parameter that
245        is specified in data.exf_clim (default = -1.9)
246      - introduce runtime parameter windstressmax (default = 2.0) that is
247        specified in data.exf
248    o fix in pkg/thsice:
249      - update Evap (Tsf changes) to be consistent with Latent heat flux
250      - maintain snow precipitation unchanged (even if Tsf >=0).
251     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
252    
253    checkpoint52m_post
254    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
255      this does not change any of the results, because myIter=0 in swfrac always
256      lead to jwtype=2 (the default anyway), but the call makes little sense
257      as a default
258    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
259    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
260      atmospheric model (AIM) to use it ; add a "slab ocean" component.
261    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
262    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
263    o extending useSingleCpuIO option to work with new exch2 I/O format
264      - old-style, missing-tile I/O is still accessible by defining CPP
265        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
266    o monitor package can write to NetCDF files and/or STDOUT
267    o fix re-definition bug in MNC_GRID_INIT_ALL()
268    o doc/api_reference added
269      - a framework for building an API Reference Manual using all
270        the "protex" comments embedded in the code
271      - see pkg/generic_advdiff, pkg/mnc for examples
272    o MNC:
273      - make myThid the last argument for all subroutines
274      - new default for the grid files: NO halos
275      - add useMNC and other run-time flags
276      - separate per-file-group handling of the unlimited dimension
277      - early initialization of MNC w/ flags read at the eeboot stage
278        and lookup tables set in initialize_fixed
279      - write all MNC output to a freshly-created directory
280    o thermodynamics sea-ice (thsice) is now tested with testreport.
281    o test exp. advect_cs: use the standard cs32 grid ; update output.
282    o Added functionality to grdchk:
283      pick global i,j,k position (or nearest wet) where to perform check.
284    
285    checkpoint52l_post
286    o new land formulation:
287      a) use ground enthalpy as prognostic variable to ensure exact
288         energy conservation.
289      b) account for water temperature and for latent heat of freezing
290         in all processes (rain, run-off, ground storage)
291      c) compute surface and ground temperature implicitly.
292    o aim_v23 modification for new land model:
293      a) Treat separately land / ocean / sea-ice surface fluxes
294         to allow implicit computation of land & sea-ice surface temp.
295      b) add snow precipitation.
296    checkpoint52l_pre
297    
298    o fix problem (when 1 tile is empty) in min/max monitor.
299    o fix bug in timeAve (u,vZetatave in common block)
300    o no restoring terms under ice for pkg/seaice
301    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
302    o bug fix for pkg/seaice pickups
303    o change MNC call locations and add coordinate attributes
304    o mask vorticity at the corner ; affects global_ocean.cs output
305    o fix ini_curvilinear_grid ; test CS experiments with mpi
306    o aim.5l_cs: modify sea-ice fraction input file ; update output
307    o exf: Adding simple range check routine for exf fields after read
308    
309    checkpoint52k_post
310    o removed top-level directory "diags"
311      - we migrated these functions to pkg/timeave a long time ago
312    o fixed bug introduced in pkg/monitor
313    o accuracy ctrlprec = 32 insuffient for gradient checks using
314      averaged fields (I/O via cost_averages)
315      -> use ctrl.h in active_file*.F to control I/O precision.
316    o paramter list of CALL ADTHE_MAIN_LOOP
317    o added initial do_the_model_io to ecco
318    o set all ...Freq to zero after cost_final
319      taveFreq, dumpFreq, pChkptFreq
320    o MAIN and ECCO differentiability restored
321    
322    checkpoint52j_post
323    o fix nchklev in tamc.h for global_ocean...
324    o Bringing flow and store directives up-to-date
325    o Really weird thing!
326      call do_the_model_io from the_main_loop with parameters
327      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
328      TAF places a faulty re-call of initialise_varia
329      after cost_final call which should not be there!
330    checkpoint52j_pre
331    
332    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
333      error messages
334    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
335    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
336      debug output
337    o modfied mdsio_writefield.F to handle non-global files under exch2
338    o update AIM Cubed-Sphere exp (aim.5l_cs):
339      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
340    o update AIM Equatorial Channel exp:
341      use standard aim_v23 pkg and change the SST fields to be more realistic.
342    o globalFile now works with exch2
343    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
344      mon_vort3.F to make exch2 friendly with >1 tile per cube face
345    o limit timeave output for hi-res integrations
346    
347    checkpoint52i_post
348    o removed CPP_EEOPTIONS.h from verification/*/code
349    o updated the tiling for global_ocean_pressure
350    checkpoint52i_pre
351    
352    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
353      the old pkg/aim).
354    
355    checkpoint52h_pre
356    o shortened offending lines in exch2_send_rx?.template
357    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
358    o genmake2: add build & execute test for NetCDF code
359    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
360      old grid files, moved CPP_EEMACROS.h to pkg/exch2
361    o added useSingleCPUIO flag to monitor.F and mon_out.F
362    o added temporary hack for sea-ice dynamics on the cube:
363      metric terms are ignored and it is assumed that
364      there is no sea-ice on cube faces 1, 2, 4, and 5.
365    
366    checkpoint52f_post
367    o added exch2 cube routines to pkg/exch2
368    o modified hs94.cs-32x32x5 to use it
369    o added new grid files to hs94.cs-32x32x5
370    checkpoint52f_pre
371    
372    checkpoint52e_post
373    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
374      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
375    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
376      to work with implicit vertical advection and AB ;
377    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
378    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
379     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
380    checkpoint52e_pre
381    
382    o fix bug in impldiff when Nr=1 or Nr=2.
383    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
384    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
385    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
386      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
387    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
388    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
389    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
390    
391    checkpoint52d_post
392    o re-tiled many expts to allow comparison in multi-processor mode
393      - updated output accordingly
394      - changed hs94.128x64x5 to use intial T from file rather than use the
395        random number generator
396    o add infrastructure in model routines for fizhi and gridalt packages
397    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
398    o changes to permit hi-res, cubed-sphere, configuration
399      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
400      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
401      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
402        of surface winds for the cube
403      (A verification experiment, based on global_ocean.cs32x15, but with
404       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
405       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
406       complete with example surface forcing files and matlab scripts to look
407       at the output and compare it with that of global_ocean.cs32x15.)
408    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
409       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
410       to conform to the common rule.
411    o check-in the first version of the coupler + interfaces for multi-components
412       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
413       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
414       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
415       - ocean and atmos. share the same horizontal grid (no interpolation).
416       - exchanges between component and coupler is done in forward_step
417    o new verification experiment, cpl_aim+ocn:
418       coupled ocean - AIM atmosphere on cs32 grid.
419    
420    checkpoint52d_pre
421    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
422    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
423    
424    checkpoint52c_post
425    o Fixing OPTIONS files for use of exf:
426      - ALLOW_ECCO not needed
427      - ECCO_CPPOPTIONS.h should not be included from
428        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
429        as has been the case in the past
430      - All cal/exf related options are currently set in
431        single header file. Should remain so until we
432        agree on a consistent new policy.
433    o Removed all CPP options for cal package.
434      cal has no more CPP options.
435    o modified STOREs in GAD_ADVECTION
436    o corrected key comp. for passkey
437    
438    checkpoint52b_post
439    o new version: "thsice" of thermodynamic sea-ice pkg:
440     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
441     - modify fluxes but do not change theta directly;
442     - light cleaning of bulk_force pkg (still needed with thsice).
443     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
444       + output_thsice.txt to test thsice & bulk_force pkgs.
445    o put back grid & coriolis monitor output.
446    checkpoint52b_pre
447    
448    o call "do_the_model_io" at the beginning (=> dump initial state)
449    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
450    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
451      (need info on NUMBER_OF_PTRACERS)
452    o missing PTRACERS headers in some routines
453    o default tamc.h in pkg/autodiff supposed to crash
454      to ensure proper customization
455    
456    checkpoint52a_post
457    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
458      - moved surfaceTendencyTice from pkg/seaice to main code
459      - subroutine FREEZE_SURFACE now limits only surface temperature
460        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
461        => new output.txt for global_ocean.cs32x15 & global_with_exf
462      - keep the old version of FREEZE for backward compatibility;
463        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
464      - corresponding modifs for TAF directives
465    o added surface flux output variables to TIMEAVE_STATVARS
466    o time-averaged output for pkg/ptracers
467    o fix problem with ECCO-related divided adjoint
468      snapshot file was missing some ad-variables,
469      but no warning issued by TAF
470    
471    checkpoint52a_pre
472    o some bug fixes for #undef REAL4_IS_SLOW
473    
474    checkpoint52 = ecco_c52_e35
475    o after testing adjoints of checkpoint51u_post
476    
477    checkpoint51u_post
478    o this is the post-merge tag of the ecco-branch
479      (needs another clean checkout and re-testing)
480    o various natl_box_adjoint configs and results
481      but no input fields
482    o obcs adjoint not yet merged!
483    o adding ECCO global 1x1 and 2x2 degree configs
484    o updated/extended some store directives for seaice
485    o pkg/ecco now containes ecco-specific part of cost function
486    o top level routines the_main_loop, forward_step
487      supersede those in model/src/
488      previous input data.cost now in data.ecco
489      (new namelist ecco_cost_nml)
490    o in ctrl/ cleaned some cross-dependencies and updated CPP options
491    
492    checkpoint51t_post
493    o this is the pre-merge tag of the ecco-branch
494    
495    checkpoint51s_post
496    o cleanup: removed various obsolete #define-s
497    o pkg/grdchk
498      - renamed 'ph-grd 3' to 'grad-res'
499      - merged from ecco-branch
500        (remaining bug fixes for obcs gradient checks)
501      - additional high-precision output for testreport
502        (grep for 'precision_grdchk_result')
503    
504    checkpoint51r_post
505    o cleaned up or removed CPP_OPTIONS.h files
506    o updated results for some of the tests to reflect the new
507      optfiles (-ieee: -O0 instead of -O3)
508    
509    checkpoint51q_post
510    o cd_code:
511      - moved cd_scheme.F -> cd_code_scheme.F
512      - separate read_checkpoint from cd_code_ini_vars.F
513      - separated cd_code part from write_checkpoint
514      - updated AD_SOURCE, generated .flow
515      - added CD_CODE_VARS.h to the_main_loop
516      - Moving cd_code specific store dir.s to pkg/cd_code
517    o ctrl package totally restructured
518      - pack/unpack now optional and decoupled from
519        xx_/adxx_ I/O
520      - ctrl_pack/unpack cleaned
521        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
522      - confined inclusion of AD_CONFIG.h to where necessary.
523    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
524    
525    checkpoint51p_post
526    o create initial cd_code package
527      - WARNING: the initialization of fields within packages
528        is broken because INI_FIELDS (where READ_CHECKPOINT is
529        called) is called *before* PACKAGES_INIT_VARIABLES.
530        This seems to be backwards since
531        1) its important to initially zero the entire field including
532           the "halo" region
533        2) zeroing needs to be done *before* reading pickup info
534           and the pickup call might or might not happen in any
535           particular run
536      - this needs an overhaul for R2
537    o cleanup verification/*/code/GMREDI_OPTIONS.h
538    o cleanup testreport
539    
540    checkpoint51o_post
541    o bringing AD-related verif's up to date with genmake2
542      - carbon/
543      - global_ocean.90x40x15/
544      - hs.94.1x64x5/
545      - (front_relax/ )
546    o (more) consistent directory structure for AD-related verif.'s
547    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
548    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
549    o bug fix in find_alpha.F for MDJWF:
550      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
551        change rho -> rho-rhoConst
552      - replace call find_rho to find_rhonum
553    o initialisation of rFlx extended to full array (required by TAF)
554      and shifted to thermodynamics
555    o removed PTRACERS.h in ptracers routine
556    o added surfacetendencyPtr to S/R parameter list pracers_forcing
557    o Correcting initialisations for fVerU, fVerV.
558    o helping TAF to recognize dependency on kUp for
559      fVerU, fVerV
560    o Replacing delZ by delR in pkg/ctrl/
561    checkpoint51o_pre
562    
563    o undid all of cp51 pending some cleanups and discussion
564    o added the [#include "AD_CONFIG.h"] statement to all files that need
565       it for adjoint/tl #defines
566     o re-worked the build logic in genmake2 to support AD_CONFIG.h
567     o removed tools/genmake since it no longer works
568    
569    checkpoint51n_post
570    o modifications to make FREEZE flux visible to pkg/kpp
571      - moved surfaceTendencyTice from pkg/seaice to main code
572      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
573      - subroutine FREEZE now limits only surface temperature
574        (this means new output.txt for global_ocean.90x40x15,
575         global_ocean.cs32x15, and global_with_exf)
576    o added surface flux output variables to TIMEAVE_STATVARS
577    
578    checkpoint51n_pre
579    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
580    o added [#include "AD_CONFIG.h"] to all files that use the following
581      defines:
582      - ALLOW_ADJOINT_RUN
583      - ALLOW_TANGENTLINEAR_RUN
584      - ALLOW_ECCO_OPTIMIZATION
585    
586    checkpoint51m_post
587    o incorporating changes to get TAMC/TAF working in genmake2
588      - added new TAMC/TAF targets to the Makefile
589      - various cleanups related to package handling
590      - these changes should have no impact on the forward model
591    
592    checkpoint51l_post
593    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
594     - faster algorithm for cal_addtime.F
595     - higher precision arithmetic, where needed
596     - pkg/exf *startdate variables changed from calendar date to
597       model integration time
598    
599    checkpoint51l_pre
600    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
601    o enable to apply restoring on S & T only in a latitude band.
602    o update output (external_forcing_surf modif. change truncation errors)
603       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
604    
605    checkpoint51k_post
606    o change default to: useNHMTerms=.FALSE.
607     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
608       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
609     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
610        exp1, ideal_2D_oce
611     - change data file of oceanic exp (leave the results unchanged for now)
612       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
613    o set gravitySign automatically according to the vertical coordinate used
614      (and change sign: back to "logical" value: +1 when R increases downward)
615    o added an include barrier to the default CPP_OPTIONS.h and
616      removed the #include "PACKAGES_CONFIG.h" from it
617    o fix a bug in mom_fluxform (from chk51j_post)
618    
619    checkpoint51j_post
620    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
621    o adjusted some flow directives (dynamics, thermodynamics)
622    o added cubed-sphere case to test cost function
623    o heckpoint_lev?_directives.h now include
624      pkg-specific directives, whenever those are enabled.
625    o Moving pkg-specific flow directives to corresponding pkg
626      Moving pkg-specific differentiation list to corresponding pkg
627      Moving pkg-specific checkpoint-lev storing to corresponding pkg
628      ---> conventions are
629           - pkg_ad.flow
630           - pkg_ad_diff.list
631           - pkg_ad_check_lev?_dir.h
632    
633    checkpoint51i_post
634    o merge of the branch-genmake2
635      - knowingly breaks the older genmake
636      - automatic generation of all ALLOW_${PKG_NAME} defines
637      - new testreport supersedes older testscript
638    o large number of package inclusion and header cleanups
639    checkpoint51i_pre
640    
641    o new output for adjoin of global ocean vector invariant
642    o fix for checkpoint of thermodynamic seaice and bulk_force
643    o Steph gchem various cleanups
644    
645    checkpoint 51h_pre
646    o fixed some single quotes
647    o modify gchem pkg to be more versatile
648    o modifications to clean up dic pkg
649    o add pkg/cfc
650    
651    checkpoint51g_post
652    o provide links for ARPACK and ADM*TLM
653    o start removing verification/vero/
654    o update AD-related stuff
655      (in particular some IF-statements in model/src/ routines)
656    o adding to verification/global_ocean.90x40x15/ adjoint of
657      vector invariant setup
658    
659    checkpoint51f_post
660    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
661    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
662      of tracer Green's fucntions for ocean inversion project.
663    
664    checkpoint51f_pre
665    o Added on-the-fly spatial interpolation capability
666        "USE_EXF_INTERPOLATION" to pkg/exf.
667      - This is a temporary Cartesian-grid hack until
668        the super-duper ESMF coupler becomes available.
669      - See verification/global_with_exf/README for usage example.
670      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
671        flags and modified pkg/seaice accordingly.
672    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
673        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
674        non-local transport term.
675    
676    checkpoint51e_post
677    o pkg/mom_vecinv:
678      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
679      - add time-ave diagnostic of vorticity advection.
680    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
681    o atmospheric geopotential: - include water vapor effect;
682                                - use p^kappa in p* scaling.
683    o land pkg: read initial state from files.
684    o AIM : add stratospheric drag in the upper level
685    
686    checkpoint51d_post
687    o change function ILNBLNK (=> last non-blank char.) to return zero
688      (instead of the string length) when the string. char is empty
689    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
690    o modif's to restore TAMC compatibility
691      - avoid "_d" constructs in PARAMETER declarations
692      - avoid interrupting lines by comment lines
693    o Use cluster local disks for purely local I/O
694      vs. globally visible disks needed for ctrl stuff
695      (merged from ecco-branch)
696      - new active_file_loc... and mdsio_..._loc routines
697      - affected packages: autodiff, ctrl, grdchk, mdsio
698    
699    checkpoint51c_post
700    o introducing integer flag debugLevel
701      - debLevZero: suppress all output
702      - debLevA: standard
703      - debLevB: equivalent to current debugMode=.TRUE.
704    o introducing pathname variable mdsioLocalDir for mdsio
705      that can be specified at runtime
706      (relevant for cluster I/O to local disk)
707    `
708    >>>checkpoint51b_post
709    adjoint of ptracers
710    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
711    o extended state in checkpoint_lev?, etc.
712    o alternative ctrl/cost with tr1 or ptracer
713    o new comlev1_bibj_ptracers
714    o new ptracers.flow
715    o made ptracers_forcing same as external_forcing_s
716    o added verification for adjoint with ptracers
717      - adm. grdchk fail so far
718      - tlm. grdchk OK
719      - checked tapelev/comlev recomputations: OK
720    <<<checkpoint51b_pre
721    
722    checkpoint51a_post
723    o added code for biogeochemistry package
724      - new pkgs: dic, gchem
725      - new subroutine in ptracers
726    o modify code for biogeo packages
727      - in model/src and pkg/ptracers
728    
729    checkpoint51
730    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
731      - autodiff, ctrl, exf, grdchk, seaice
732      kept separate packages
733      - cost, ecco, obcs
734    o updating verification/internal_wave, verification/lab_sea
735      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
736    
737    checkpoint50i_post
738    o Preparing next differentiable checkpoint and sync
739      of MAIN vs. ecco-branch
740      - 1st step: this one is differentiable
741      - 2nd step: next(! not this) checkpoint will have updated packages
742                  from ecco-branch)
743    
744    checkpoint50h_post
745    o new package "land": provide surface BC for AIM.
746    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
747    o AIM: use true log-P extrapolation for near surface temp (= as in
748        F.Molteni paper) ; update aim.5l_cs output.
749    o New variable in PARM03 for more flexible pickups
750    o somewhat cleaned package initialisation sequence for
751      ctrl/ cost/ ecco/ in packages_... routines
752    
753    checkpoint50g_post
754    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
755      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
756      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
757        made the default because of faster convergence than ADI
758    
759    checkpoint50f_post
760    o exf totally restructured
761      - replaced all exf_set_ routines by one generic exf_set_gen.F
762        and made sure it's still differentiable
763      - split exf_getffields.F into new exf_bulkformulae.F
764      - exf_inscal_/exf_outscal_ suffixes consistent with field names
765      - updated adjoint/makefile and relevant verif. accordingly
766    
767    checkpoint50f_pre
768     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
769          + change Evap over land. (update aim.5l_cs output)
770     o added missing .cvsignores and made uniform across expts
771     o changed configuration of tidal_basin_2d expt
772     o added pkg/debug functions for tracing code in fatal crashes
773     o tidied pkg/monitor to use MONITOR_OPTIONS.h
774     o new fn in pkg/monitor to stop model if solution grows too big
775     o removed lots of single quotes from comments
776    
777    checkpoint50e_post
778    o make KPP work with PTRACERS
779     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
780       nearly a copy of kpp_transport_s
781     - there is no analogue to SurfaceTendencyS, so I have to use
782       gPtr(of the surface layer) instead
783    o add a new platform SunFire+mpi (SunFire 15000) to genmake
784    checkpoint50e_pre
785    
786    checkpoint50d_post
787    o change kpp output from multiple-record state files to single-record state
788      files analogous to write_state.F
789    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
790      analogous to the cg2d-related output.
791    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
792      so that writing to internal file fn (with length 512) fails.
793    checkpoint50d_pre
794    
795    checkpoint50c_post
796    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
797    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
798    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
799    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
800    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
801    
802    checkpoint50c_pre
803    Merging from release1_p13:
804    o bug fix for pkg/seaice dynamic solver
805    o Added SEAICE_initialHEFF to pkg/seaice
806    
807    checkpoint50b_post
808    o store u*,v* in gU,V instead of in guNm1,gvNm1
809    o in order to put the momForcing out of the Adams-Bashforth:
810      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
811      to timestep.F
812    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
813    o re-generate output for highly sensitive test-exp:
814       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
815    
816    checkpoint50b_pre
817    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
818    o corrected CPP option mismatch in exf_Bulk... functions for case
819      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
820    
821    checkpoint50a_post
822    o Bug fix for merging between c50 and KPP.
823      ikey was passed from thermodynamics to kpp_calc via
824      common block rather than being recomputed in kpp_calc,
825      in contradiction with new key itdkey.
826      New key ikppkey created, and tamc.h headers updated.
827    
828    checkpoint50
829    - 2nd step of merge with ecco-branch:
830      merge changes in ecco-branch back into main trunk
831    - bug fix in find_alpha
832    - more storing in gmredi_calc_tensor.F, kpp_routines.F
833    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
834    - merged some sliced AD support routines
835    
836    checkpoint49
837    merged from ecco-branch:
838    o exf:
839      - Enable initialisation of forcing fields to constant
840        (runtime) values.
841      - in exf_getffields.F
842        Reduce i-/j-loop to interior domain, discarding overlaps.
843        That also fixes wrong TAF-key computations for key_1, key_2
844        with bulf formulae.
845      - exf_init.F modify #ifdef for exf_init_evap
846      - exf_getffieldrec.F, ctrl_getrec.F
847        The following INT-usages are not safe:
848          fldsecs  = int(fldsecs/fldperiod)*fldperiod
849          fldcount = int(fldsecs/fldperiod) + 1
850        and were modified.
851    o autodiff: checkpoint_lev...
852      - updated storing for bulk formulae (some arrays were missing)
853      - added state for seaice package
854      - synchronized with main branch
855    o DIVA:
856      Modif.s in
857      - the_main_loop.F
858      - the_model_main.F
859      and added cost_final_restore.F cost_final_store.F
860      o With these changes, it is possible to fully separate
861        the first forward run to compute the cost function (mdthe_main_loop)
862        and adjoint runs over individual DIVA intervals (adthe_main_loop)
863        into separate model executions.
864        This enables better tuning of DIVA to given queue sizes.
865      o Loss of cost function value in consecutive DIVA runs is
866        fixed by storing to 'costfinal' file.
867      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
868        beginning/end of adjoint integration is accounted for.
869      The current changes apply to TAF-1.4.26.
870      TAF has one remaining bug, requiring one manual change
871      (see MITgcm manual).
872    o cal: synchronized between MAIN and ecco-branch
873    
874    checkpoint48i_post
875    o Changes to restore differentiability of code w.r.t. previous tag
876      (mostly adding new routines to make list and replacing
877      pressure by totPhiHyd).
878    o Updated and merged grdchk package
879      - has both ADM and TLM checks
880      - works for single- and multi-proc.
881      - output cleaned
882      - worked successfully for parallel DIVA
883    o genmake:
884      - Adding -platform=SP4
885      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
886    o Modif. for DIVA:
887      ctrl_unpack should not be called in intermediate DIVA interval.
888      (similar thing would apply for active files such as
889      tbar, sbar, psbar, which should not be reinitialised;
890      only relevant for ecco-branch)
891    
892    checkpoint48h_post
893    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
894    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
895    o Added SEAICE_initialHEFF to pkg/seaice
896    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
897    
898    checkpoint48g_post
899    --- EOS:
900    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
901      store total Potential in totPhyHyd for diagnostics & EOS.
902    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
903    --- Pressure/geopotential gradient:
904    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
905    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
906      ( changes results of global_ocean_pressure )
907    o NLFS + z-coord.: add eta*Rho' contribution.
908    o accurate phiHyd when using interface-W at the middle between 2 centers
909     ( changes results of ideal_2D_oce )
910    o includes r* 2nd term in potential gradient.
911    
912    checkpoint48f_post
913    Merging from release1_p12:
914    o Modifications for using pkg/exf with pkg/seaice
915      - improved description of the various forcing configurations
916      - added basic radiation bulk formulae to pkg/exf
917      - units/sign fix for evap computation in exf_getffields.F
918      - updated verification/global_with_exf/results/output.txt
919    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
920      (SBO) core products, including oceanic mass, center-of-mass,
921      angular, and bottom pressure (see pkg/sbo/README.sbo).
922    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
923      to avoid negative values in shallow regions.
924      - updated verification/natl_box/results/output.txt
925      - updated verification/lab_sea/results/output.txt
926    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
927    o Added useSingleCpuIO option (see PARAMS.h).
928    o Updated useSingleCpuIO option in mdsio_writefield.F to
929      work with multi-field files, e.g., for single-file pickup.
930    o pkg/seaice:
931      - bug fix in growth.F: QNET for no shortwave case
932      - added HeffFile for specifying initial sea-ice thickness
933      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
934    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
935      kpp_transport_t.F, forward_step.F, and the_main_loop.F
936    o pkg/seaice:
937      - adjoint-friendly modifications
938      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
939    
940    checkpoint48e_post
941    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
942    o dynamics: change definition of computational domain & adapt mom_fluxform
943      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
944    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
945        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
946        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
947        global_ocean.90x40x15 global_with_exf global_ocean_pressure
948        inverted_barometer solid-body.cs-32x32x1
949      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
950    
951    checkpoint48d_post
952    o in preparation for r*:
953     a) use pre-computed gradient of hydrostatic potential:
954        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
955     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
956        => affects results of glob_oce_pressure (different truncation error)  
957      update output.txt of ideal_2D_oce & global_ocean_pressure
958    
959    checkpoint48d_pre
960    o in preparation for r*:
961      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
962      pass the 2 comp. of the grad. as arguments to momentum S/R.
963      but for the moment, only used if it does not change the results.
964    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
965    
966    checkpoint48c_post
967    Modifications in treatment of initial flux forcing controls
968    to avoid extra storing of flux fields.
969    
970    checkpoint48c_pre
971    o Added tidal_basin_2d experiment (currently 1D!)
972    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
973    
974    checkpoint48b_post
975    o r* coordinate added in #ifdef NONLIN_FRSURF block.
976     (modification to pressure gradient not yet implemented)
977    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
978      (for U & V) that are used for vertical advection of momentum.
979    
980    checkpoint48a_post
981    o In preparation for r*, use temp. array to compute vertical transport
982       in flux-form momentum pkg. => change results of few test-exp.
983      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
984                        lab_sea, natl_box & plume_on_slope
985    
986    checkpoint48
987    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
988    
989    checkpoint47j_post
990    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
991    o moved adexch from forward_step to addummy_in_stepping
992    o added exch in ctrl_map_...
993    o aveFreq.=0. at end of cost_final to avoid overwrite in
994      reverse checkpointing loop
995    o Yet more changes in gmredi:
996      * adgmredi_calc_tensor
997        avoiding all recomputation of gmredi_slope_limit
998      * adgmredi_x/y/rtransport
999        added flag for excessive storing to avoid recomp. of
1000        u/v/rtans, dTdx/y/z
1001        -> this is not really necessary and very memory-consuming
1002      * adgmredi_slope_psi:
1003        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
1004      * gmredi_slope_limit
1005        re-activated full calculation of taperfct for case 'ac02'
1006    o updating verification/ adjoints of carbon, global_ocean.90x40x15
1007    
1008    checkpoint47i_post
1009    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
1010    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
1011      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
1012    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
1013    o gmredi: fix few bugs.
1014    
1015    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
1016    This will be a good checkpoint to plug into the ecco-branch.
1017    o few modif.'s to get latest version adjointed
1018      (mainly kick out code in ini_linear_phisurf)
1019    o modif's to run adjoint with exactConserv
1020    o case GM_BOLUS_ADVEC should be cleaned
1021      S/R gmredi_slope_psi should be cleaned
1022    o verification/carbon now has exactConserv=.TRUE.
1023    
1024    checkpoint47g_post
1025    o time-average AIM output: becomes independent from statvars time-average
1026      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
1027    o After TAF bug fix:
1028      Tested adjoint of gmredi package.
1029      Tests were done with checkpoint47 rather than with latest
1030      checkpoint47f_post since the latter is broken for the adjoint
1031      verification/carbon/ contains both ADM and TLM gradient checks.
1032    Here they are, before they get changed/lost/stolen.
1033    Mostly modif.'s to fix numerical sensitivities.
1034    Gradient checks OK for
1035    - GM_taper_scheme:
1036      * clipping
1037      * ac02
1038      * linear
1039      * glw91
1040      * dm95
1041      * ldd97
1042    - GMREDI_OPTIONS:
1043      * GM_VISBECK_VARIABLE_K
1044      * GM_NON_UNITY_DIAGONAL
1045      * GM_EXTRA_DIAGONAL
1046      * GM_BOLUS_ADVEC
1047    in conjunction with data.gmredi parameters to be checked in
1048    in a few minutes under verification/carbon/code/
1049    
1050    checkpoint47f_post
1051    Merging from release1_p10:
1052    o modifications for using pkg/exf with pkg/seaice
1053      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
1054        and SEAICE_EXTERNAL_FLUXES
1055      - pkg/exf CPP options EXF_READ_EVAP and
1056        EXF_NO_BULK_COMPUTATIONS
1057      - usage examples are Experiments 8 and 9 in
1058        verification/lab_sea/README
1059      - verification/lab_sea default experiment now uses
1060        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
1061    
1062    checkpoint47e_post
1063    o created a tag prior to creating a branch
1064    
1065    checkpoint47d_post
1066    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
1067      at the bottom boundary had an erroneous half slip boundary condition
1068    o added bottom drag and no slip boundary condition capabilities to
1069      oceanic pressure coordinates code
1070    o added new verification experiment global_ocean_pressure, this experiment is
1071      also described in the tutorial section of the manual
1072    checkpoint47d_pre
1073    
1074    checkpoint47c_post
1075    o Added a verification experiment for a global cubed-sphere ocean run
1076      -  verification/global_ocean.cubed32x32x30
1077      -  uses pkg/therm_seaice and pkg/bulk_forcing
1078    
1079    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
1080    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
1081      when using P-coordinate; only implemented for atmospheric config.
1082    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
1083      NOTES: requires option NONLIN_FRSURF to be "#define".
1084    o update advect_xz/results/output.txt (left from checkpoint44g_post)
1085    
1086    checkpoint47b_post
1087    Merging from release1_p9:
1088    o pkg/seaice
1089      - removed GOTO's and added taf directives
1090      - double precision constants to reduce the g77 (Linux)
1091        to F77 (SGI) differences reported in release1_p8
1092    o tools/genmake
1093      - added SGI options
1094    o verification/testscript
1095      - updated to that of checkpoint47a_post
1096    o verification/global_ocean.90x40x15/input/eedata
1097      - modified for SGI f77 compatibility
1098    o verification/lab_sea
1099      - added description of sea-ice model
1100      - added missing matlab routines
1101      - added test of thermodynamics parallelization
1102    
1103    checkpoint47a_post
1104    o new pkg: aim_v23
1105     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
1106       for now, keep the same surface forcing as before.
1107     - Part-Cell implemented into AIM; check that Heat & Water are conserved
1108     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
1109     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
1110    o add diagnostic of surface correction term in monitor output
1111    
1112    o bulk_force and therm_seaice
1113    - Two packages:  bulk_force (Bulk forcing)
1114      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
1115    - Earlier integration from Stephaine Dutkiewicz
1116      and Patrick Heimbach.
1117    - Two ifdef statements for compile time,
1118       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
1119    
1120    checkpoint47
1121    differentiable version of checkpoint46n_post
1122    o bug fix in quasihydrostaticterms
1123    o * "clean" adjoint code (in terms of extensive recomputations)
1124        can now be obtained for all GMREDI options (i.e. for
1125        - GM_VISBECK_VARIABLE_K
1126        - GM_NON_UNITY_DIAGONAL
1127        - GM_EXTRA_DIAGONAL
1128        - GM_BOLUS_ADVEC )
1129      * However, wrong gradient check problem remains unsolved.
1130      * New CPP options have been introduced for different
1131        tapering schemes
1132    o external_fields_load now part of differentiation list
1133    o pressure needs multiple storing;
1134      would be nice to have store_pressure at beginning or
1135      end of forward_step, e.g. by having phiHyd global (5-dim.)
1136      (NB: pressure is needed for certain cases in find_rho,
1137      which is also invoked through convective_adjustment).
1138    o recomputations in find_rho for cases
1139     'JMD95'/'UNESCO' or 'MDJWF' are OK.
1140    o #define ATMOSPHERIC_LOADING should be differentiable
1141    o ini_forcing shifted to begining of initialise_varia
1142    o Incorporating QNVS line search routines into MITgcm
1143      (this is separate code, and therefore not under pkg)
1144      lsopt/, optim/
1145    o Updated verification/carbon/
1146      - #define GM_VISBECK_VARIABLE_K
1147      - GM_taper_scheme    = 'ldd97'    
1148    
1149    checkpoint46n_post
1150    Merging from release1_p8:
1151    o verification/natl_box:
1152      updating new external_fields_load routine
1153    o New package: pkg/seaice
1154      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
1155      The sea-ice code is based on Hibler (1979-1980).
1156      Two sea-ice dynamic solvers, ADI and LSR, are included.
1157      In addition to computing prognostic sea-ice variables and diagnosing
1158      the forcing/external data fields that drive the ocean model,
1159      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
1160      The implied surface heat flux is then stored in variable
1161      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
1162      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
1163      non-local transport term.  Because this call precedes model
1164      thermodynamics, temperature under sea-ice may not be "exactly" at
1165      the freezing point by the time theta is dumped or time-averaged.
1166      N.B.: fairly large differences in accuracy occur across
1167            different platforms/compilers; comparison between
1168            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
1169            generated output gives:
1170       T           S           U           V
1171      C D M    c        m  s        m  s        m  s        m  s
1172      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
1173      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
1174      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
1175    
1176      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
1177    o GAD:
1178      - generated new common blocks to account for call of
1179        same gad routines with differing traceridentities
1180        (needed to modify tracerIdentity indices in GAD.h)
1181      - generated separate common blocks for case useCubedSphereExchange
1182        (Department of Futurology)
1183      - parameter lists to gmredi_?transport: added tracerIdentity
1184      - added new key indices to tamc.h
1185    o external_fields_load:
1186      - added this routine to TAF list
1187      - needed to make some common blocks global and additional storing
1188        along the same lines as exf package (checkpoint_lev?_directives.h)
1189    o exf:
1190      updated external forcing package
1191      - bug fixes carried over from ecco-branch
1192        (missing OBCS_OPTIONS.h in two routines)
1193      - enable easy to use "no forcing".
1194      - added exf I/O for atmospheric loading
1195      - added exf I/O for runoff data
1196      - transfered scaling between exf <-> MITgcm to exf namelist
1197    o Adding new verification experiment global_with_exf.
1198      This verification experiment is almost identical to the
1199      global_ocean.90x40x15 experiment, except that it uses
1200      the exf (and cal) package instead of the
1201      external_fields_load routine (cf README file).
1202    
1203    checkpoint46m_post
1204    o modified testscript to return -- when there are no lines of "%MON" output
1205    o added new flag "quasiHydrostatic" for QH mode
1206      and new routine quasihydrostaticterms()
1207    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
1208      New routine: mom_u_coriolis_nh()
1209    o fixed sign of non-hydrostatic metric terms in u and v equations.
1210      Depend on correct sign of gravitySign.
1211    o added work.pc* to .cvsignore in aim directories using ifc
1212    o introduced flag for controllin non-hydrostatic metric terms
1213    o removed gravitySign from PARM04
1214    o switched to g77/ifc from pgf77 in aim experiments
1215    
1216    checkpoint46l_post
1217    o made convective adjustment work with pressure coordinates:
1218     - changed the direction of k-loop in convective_adjustment.F for the
1219       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
1220     - adjusted the reference pressure k-index in convective_adjustment.F
1221     - adjusted the convection condition in convect.F (in analogy to
1222       calc_ivdc.F)
1223     - convective_adjustment no longer computes anything on the halos
1224     - removed the warnings about negative salinity from find_rho.F and
1225       find_alpha.F; instead the new routine look_for_neg_salinity, called
1226       at the beginning of find_rho, find_alpha, and find_beta, does a
1227       check of the entire slice, if CPP-option
1228       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
1229    checkpoint46l_pre
1230    
1231    checkpoint46k_post
1232    o fixed the verification/global_ocean.90x40x15 experiment:
1233     - new bathymetry (the world according to A., JMC, and M.)
1234     - new initial fields and forcing fields (*.bin files)
1235     - new POLY3.COEFFS (for the next release one should switch to a full
1236       equation of state: JMD95P or MDJWF)
1237     - fixed several errors and redundancies in the data file
1238     - experiment uses looped cells
1239     - added matlab directory with diagnostic scripts for plotting of output
1240    
1241    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
1242     - read AIM physics parameters from a file (data.aimphys)
1243     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
1244    
1245    checkpoint46j_post
1246    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
1247    o move wVel computation at the end of the time step, in S/R integr_continuity
1248    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
1249    o update timeave pkg for wVel diagnostic.
1250    checkpoint46j_pre
1251    
1252    checkpoint46i_post
1253    o Clean up AIM package (and keep the results unchanged):
1254      include CPP_OPTION and use IMPLICT NONE in all routines ;
1255      declare all the variables _RL ; use _d 0 for all numerical constants.
1256      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
1257    
1258    checkpoint46h_post
1259    o cleaned up the use of rhoNil and rhoConst.
1260      - rhoNil should only appear in the LINEAR equation of state, everywhere
1261        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
1262        and the dynamical equations are all divided by rhoConst
1263    o introduced new parameter rhoConstFresh, a reference density of fresh
1264      water, to remove the fresh water flux's dependence on rhoNil. The default
1265      value is 999.8 kg/m^3
1266    o cleanup up external_forcing.F and external_forcing_surf.F
1267      - can now be used by both OCEANIC and OCEANICP
1268    checkpoint46h_pre
1269    
1270     Added code to convert surface volume flux (fresh water) into
1271     a mass flux when using P coordinates in the ocean (OCEANICP).
1272     Note: It assumes you have set rho0=rhoConst=density of fresh water.
1273    
1274    checkpoint46g_post
1275    o Include a new diagnostic variable phiHydLow for the ocean model
1276      - in z-coordinates, it is the bottom pressure anomaly
1277      - in p-coordinates, it is the sea surface elevation
1278      - in both cases, these variable have global drift, reflecting the mass
1279        drift in z-coordinates and the volume drift in p-coordinates
1280      - included time averaging for phiHydLow, be aware of the drift!
1281    o depth-dependent computation of Bo_surf for pressure coordinates
1282      in the ocean (buoyancyRelation='OCEANICP')
1283      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
1284        Theta, Salinity, and Pressure in the parameter list. This routine is
1285        presently contained in find_rho.F. This routine does not give the
1286        correct density for 'POLY3', which would be a z-dependent reference
1287        density.
1288    o cleaned up find_rho
1289      - removed obsolete 'eqn' from the parameter list.
1290    o added two new verification experiments: gop and goz
1291      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
1292    checkpoint46g_pre
1293    
1294    checkpoint46f_post
1295    o Enable tangent linear (forward mode) gradient checks:
1296      - extended active file handling to g_... files
1297      - added TANGENT_SIMULATION to theSimulationMode
1298      - extended grdchk package accordingly
1299    o added tangent linear setup in verification/carbon/code_ftl
1300    o added adjoint setup in verification/front_relax/code_ad
1301    
1302    checkpoint46e_post
1303    o Added new equation of state -> MDJWF
1304      - EOS of McDougall et al., 2002, JAOT, submitted
1305      - caveat: the equation of state is only valid for a smaller (more
1306        realistic?) range of values than JMD95P/Z and UNESCO
1307      - added masks to the calculation of pressure in store_pressure
1308      - added more check values for density in check_eos (ini_eos.F), some of
1309        the old check values are out of the range of the MDJWF-eos, so don't
1310        expect perfect matches for those
1311    checkpoint46e_pre
1312    
1313    checkpoint46d_post
1314    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
1315      'OCEANICP', also initialised field pressure correctly in ini_eos in the
1316      case of pressure coordinates. eosType='JMD95Z' in
1317      combination with buoyancyRelation='OCEANICP' now causes an error.
1318    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
1319      in find_alpha/beta.
1320    checkpoint46d_pre
1321    
1322    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
1323      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
1324    
1325    checkpoint46c_post
1326    o Changes necessary for ocean in p-coordinates
1327     -  Added new buoyancy relation = 'OCEANICP'
1328     -  Added new parameters = gravitySign (this used to be contained inside
1329        the factor dRdZ which I added when we first switched to R coordinates).
1330     X GM/Redi is not compatible (yet)
1331     X bottom drag and no-slip need to be debugged.
1332    checkpoint46c_pre
1333    
1334    checkpoint46b_post
1335    o Added new equation of state -> JMD95Z and JMD95P
1336      - EOS of Jackett and McDougall, 1995, JAOT
1337      - moved all EOS parameters into EOS.h
1338      - new routines ini_eos.F, store_pressure.F
1339    o Added UNESCO EOS, but not recommended because it requires
1340      in-situ temperature (see JMD95)
1341    o Modified formatting for knudsen2.f in utils/knudsen2 and added
1342      unesco.f to be used with POLY3
1343    checkpoint46b_pre
1344    
1345    checkpoint46a_post
1346    o Added (atmospheric) pressure loading
1347      - new field in FFIELDS.h, etc...
1348      - new cpp flag ATMOSPHERIC_LOADING
1349    o Changed hFacC to _hFacC in calc_phi_hyd.F
1350    o Added SHORTWAVE_HEATING to some files for consistency
1351    checkpoint46a_pre
1352    
1353    checkpoint46
1354    further merges from release1_p5
1355    o new ctrl package
1356      - adopted from ECCO environment to enable optimization
1357      - added Eliassen Palm fluxes to controls
1358    o added Eliassen Palm flux controls to gradient check package
1359    o cost package
1360      - Compatible with new ctrl package
1361      - added Eliassen Palm cost hooks
1362      - modif's of existing cost functions
1363    o Adjoint-related bug fixes in kpp:
1364      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
1365      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
1366    o autodiff package
1367      - flow directives:
1368        + new for S/R do_the_model_io
1369        + enhanced for S/R checkpoint
1370        + new gmredi.flow
1371      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
1372        disable adcommon.h/g_common.h by default.
1373      - fixed problem for adjoint of global_max
1374    o modified verification/carbon/
1375    o New setup for adjoint of global_ocean
1376    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
1377    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
1378    o incorporated hooks for sponge layer code (external_forcing.F)
1379    
1380    checkpoint45d_post
1381    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
1382    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
1383      (affects plume_on_slope "cg2d" output)
1384    o add new parameter deltaTfreesurf for free-surface time stepping
1385    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
1386    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
1387    o change phiMin in exp1 (to agree with documentation)
1388    o add new flags:
1389     - T,S forcing inside/outside Adams-Bashforth
1390     - turn off temp,salt advection and/or forcing
1391     - for each tracer, define internal flag for multiDimAdvection & A-B
1392    o monitor: change definition of KE to check conservation of Energy
1393    
1394    checkpoint45c_post
1395    o Removed f90 comments ("!")
1396    o Modified initialisations to enable exf package for MITgcm
1397      (without invoking ECCO_PACKAGE).
1398    o modifications to gradient check package (Martin Losch)
1399      - enable centered differences
1400      - modified format of standard output
1401    
1402    checkpoint45b_post
1403    o cleaned exchange calls in cg2d
1404    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
1405    o included CPP option SINGLE_LAYER_MODE in thermodynamics
1406      to configure barotropic setup (Martin Losch)
1407    o moved some initialisations within bi,bj loop in dynamics
1408      (TAF flow dependency)
1409    o in initialise_varia, moved call packages_init_variables
1410      before convective_adjustment_init
1411      (corresponding adjustment of TAF tape initialisation).
1412    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
1413    
1414    checkpoint45a_post
1415    o compute Rho over the whole domain (extend iMin,jMin indices)
1416    o specific exchange for X-slice domain (case Ny=1)
1417    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
1418    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
1419    
1420    checkpoint44h_post = checkpoint45
1421    o Fix to restore differentiability:
1422      place at which packages_init_variables is called in
1423      initialise_varia is crucial for reverse control flow.
1424    o modifications in GMRedi to enable stable adjoint
1425      (corresponding modif's in thermodynamics, dynamics)
1426    o added missing hook for sponge layer code in external_forcing
1427    o modified test cost functions
1428    o storing in gad_advection (plus removal of write(0,*)!
1429    o missing headers TR1.h added in convective_adjustment routines
1430    o errorMessageUnit set non-equal zero in eeboot
1431      (conflict on some platforms, e.g. IBM SP3)
1432    o modified carbon verif.
1433    
1434    checkpoint44h_pre
1435    o vertical grid option: allow to put the Interface at the middle between
1436      2 cell-centers ; replace delZ in pkg/kpp by drF.
1437    o GM Advective form: Tracers are advected using the residual transport (=
1438      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
1439    
1440    checkpoint44g_post
1441    o fix surface correction term in multiDimAdvection (affects plume_on_slope
1442      results) ; ifdef missing in thermodynamics.F
1443    
1444    checkpoint44f_pre,checkpoint44f_post
1445    o added PTRACERS package
1446      This allows an arbitrary number of passive tracers to be integrated
1447      forward simultaneously with the dynamicaly model.
1448      + Implemented so far:
1449        - basic forward algorithm (time-stepping, advection, diffusion, convection)
1450        - I/O and checkpointing
1451        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
1452      + Not implemented so far:
1453        - KPP
1454        - OBCS
1455      + No specific example supplied (yet) but global_ocean.90x40x15 has the
1456        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
1457        line in data.pkg.
1458      + This package is disabled by default since it increases storage.
1459    
1460    
1461    o testscript: added -cleanup option
1462    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
1463                 b) enable to filter 2D fields.
1464    
1465    checkpoint44e_pre,post
1466    o re-wrote convective adjustment to use pre-calculated weights
1467      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
1468      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
1469      Original calls to convect() still in place.
1470    
1471    chkpt44d_pre,post
1472    o added missing EXCLUDE_MONITOR flags
1473    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
1474      (incompatible typ in MIN/MAX expressions caused problems
1475      on IBM SP3)
1476    o in genmake added variable MAKEDEPEND
1477      plus resetting for case SunOS
1478    o added timer_stats.c routine for IBM SP3
1479    o removed variables in dynamics
1480    !!! I forgot to create tag chkpt44d_pre !!!
1481    !!! But chkpt44d_pre = chkpt44c_post    !!!
1482    
1483    o real fresh water flux implemented with non-linear free-surface.
1484    
1485    chkpt44c_pre,post
1486    o few fix (mask in shap_s2, EmPmR in external_field_load,
1487      USE_NATURAL_BCS in solve_for_P);
1488    o add arguments myIter & myTime to S/R obcs_calc & solve_for_P
1489    
1490    checkpoint44b_pre/_post
1491    o merge of relevant stuff from the ecco-branch:
1492      - genmake: removed $S64 overwrite for case SunOS
1493      - pkg/exf: update and corrections for field swapping and obcs
1494      - pkg/ecco: parameter lists for the_model_main, the_main_loop
1495                  harmonized between ECCO and MITgcm
1496      - pkg/autodiff: added flow directives for obcs, mdsio_gl_slice
1497                      updated checkpointing_lev... lists for obcs
1498      - model/src: minor changes in forward_step, plot_field
1499                   added directive for divided adjoint in the_main_loop
1500      - pkg/mdsio: added mdsio_gl_slice
1501    
1502    o check parameters & config (chkpt44a_pre,post)
1503    o OBC and NonLin_FrSurf.
1504    
1505    checkpoint44
1506    o fix bug in mom_vi_del2uv
1507    o select when filters are applied ; add options to zonal_filter (data.zonfilt)
1508    o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
1509    o update AIM experiments (NCEP input files)
1510    o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
1511    o added some stuff for AD
1512    
1513    checkpoint43
1514    o added two new advection tests
1515    o added global 4x4 degree ocean test
1516    o added test of H&S94 with free surface on cube
1517    o some final mods for gradient check, adjoint,...
1518    
1519    checkpoint42
1520      Fixed AD-related problems:
1521    o Store directives up-to-date with re-arranged Adams-Bashforth
1522      (mainly thermodynamics.F)
1523    o New store directives for multi-dim. advection schemes
1524      * new CPP flag ALLOW_MULTI_DIM_ADVECTION
1525      * new common block and key passkey
1526      (mainly gad_advection.F)
1527    o Modified store directives for split of dynamics/thermodynamics
1528      for the case ALLOW_KPP
1529    o Cleaned argument list for timestep_tracer.F
1530    
1531    checkpoint41
1532    o re-formatted/added comments in prologues of key subroutines
1533      to work with protex
1534    
1535    checkpoint40
1536    o moved calc_gs, calc_gt and calc_tr1 back to model/src
1537    o added FLT (floats) package from Arne along with demo. experiment
1538    o re-arranged Adams-Bashforth scheme for tracers to allow easier
1539      implementation of forward-in-time forcing terms
1540    o more mods for non-linear free-surface including new variable
1541    o modified multi-dim method to work on cube
1542    o bug fix in KPP (from DM)
1543    
1544    checkpoint40pre9
1545    o added DST advection schemes
1546    o fix MPI bug on SGI's
1547    o modifications for non-linear free-surface
1548    o fixed conditionals for fixed flow/passive tracer only mode
1549    o added tension/strain form of stress tensor
1550    o changes to commenting of arguments for TAF/TAMC
1551    o added/updated many matlab scripts
1552    o added multi-dimensional advection method for tracers
1553      
1554    checkpoint40pre8
1555    o new package rw/
1556      Added method for dumping intermediate local arrays:
1557      mdsio_writetile - same as mdsio_writefield except works from inside
1558                        bi,bj loop
1559      mdsio_writelocal - same as mdsio_writetile except works for local
1560                         arrays
1561      write_local_r? - higher-level wrapper for mdsio_writelocal
1562      Controlled by diagFreq. Defaults to zero (ie. no dumps)
1563      Example given at end of mom_vecinv.F that dumps some local arrays.
1564    o replaced calc_mom_rhs.F by mom_fluxform.F/mom_vecinc.F to
1565      control flux-form versus vector invariant code.
1566      Switch is runtime flag vectorInvariantMomentum (defaults to false)
1567      or genmake -DISABLE ...
1568    o TAMC-related update to cope with mom_fluxform.F/mom_vecinc.F
1569      (additional storing is now needed for case vecinv;
1570      currently nothing implemented to switch this storing off
1571      in case fluxform is used since no CPP flag available).
1572    
1573    checkpoint40pre7
1574    o bug fix in dynamics.F
1575      calc_viscosity called before k=1,Nr loop.
1576    o added some #ifdef's ALLOW_PASSIVE_TRACER
1577    o cleaned initialisations in ctrl_map_ini
1578      related to TAF
1579    
1580    checkpoint40pre6
1581    o split dynamics into thermodynamics & dynamics
1582    o corresponding split of calc_diffusivity into
1583      calc_diffusivity, calc_viscosity
1584      (kpp_calc_diff, kpp_calc_visc).
1585    o Added diffkr, kapgm to control variables
1586    o bug fix in gmredi_slope_limit for ldd97
1587    
1588    checkpoint40pre5
1589    o proper initialization of Adams-Bashforth time stepping
1590      + uses forward step for very first step of model (iter=0)
1591    o re-generated *all* output since almost all output is modified by this
1592      change (sorry but we've been putting this one off for about 2 years)
1593      + natl_box, aim.5l_Equatorial_Channel and aim.5l_zon-ave were
1594        *not* regenerated since they are already out of date and I don't
1595        want to create the impression that they are suddenly working.
1596    o removed KAP stuff for DEC's
1597    o modified/added many .cvsignore files in */code and */input
1598    o added new expt "solid-body.cs-32x32x1"
1599      + this uses an alternative form of ini_curvilinear_grid.F which
1600        is not necessarily any better than the current one...
1601    
1602  checkpoint40pre4  checkpoint40pre4
1603  o added re-initialisations of utrans,vtrans,rtrans in  o added re-initialisations of utrans,vtrans,rtrans in
1604    calc_common_factors which are crucial for TAF.    calc_common_factors which are crucial for TAF.

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