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revision 1.125 by jmc, Mon Jan 27 21:42:19 2003 UTC revision 1.384 by edhill, Sun Nov 14 03:36:51 2004 UTC
# Line 3  $Header$ Line 3  $Header$
3      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
4      ==============================      ==============================
5    
6    o mnc: cleanup "full" files--fixes out-of-memory problem
7    
8    checkpoint55j_post
9    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
10      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
11    o add consistent build directories and .cvsignore files to verification
12    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
13    o make all subroutines 30 or less characters in length for certain older
14      compilers to work (a thorough search only turns up two routines in
15      pkg/ptracers)
16    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
17      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
18    
19    checkpoint55i_post
20    o change arrays for total vertical diffusivity (2.D if explicit,
21      3.D if implicit) ; each ptracer uses its own background value.
22    o added mnc/NetCDF output capability to ocn_compon_interf
23      - added bits to verification/cpl_aim+ocn so that it can run on
24        ITRDA and other clusters without the mpirun "-wd" option
25    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
26      configuration
27    o give MNC the ability to create additional files rather than
28      exceeding a specified file size limit "MNC_MAX_FILESIZE"
29      - the default is just less than 2GB which is a practical limit
30        on many systems
31    o Compute the non-local term using either KPP vertical diffusivity (=default)
32       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
33    
34    checkpoint55h_post
35    o add verification test "vermix"
36    o remove all the *_ioinc flags and replace with the single global
37      outputTypesInclusive flag
38    o allow to set a vertical profile of vertical diffusivity for T & S
39    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
40    o useMNC moved from data.mnc to data.pkg
41    
42    checkpoint55g_post
43    o Renaming carbon AD experiments to comply with testreport conventions
44    o Updating adjoint of Held-Suarez hs94.1x64x5
45    o Fixing directives for non-ECCO forward_step, after ECCO directives
46      have been fixed to avoid recomp. of do_oceanic_phys
47      Works well for global_ocean.90x40x15,
48      but recomp. issue remains for carbon
49    o Updating adjoint output for natl_box_adjoint after
50      pkg/ecco has been modified (see taga c55d_post)
51    
52    checkpoint55f_post
53    o rename to timeave_init_fixed
54    
55    checkpoint55e_post
56    o some delicate re-shuffle of store directives to avoid one
57      extra call of do_oceanic_physics
58      affects ecco_the_main_loop.F, do_oceanic_physics.F
59      checkpoint_lev1_directives.h
60    o NB: this may break global_ocean adjoint temporarily,
61      but it is clear how to fix it. Will do later, need this now.
62    
63    checkpoint55d_post
64    o ECCO specific cost function terms (up-to-date with 1x1 runs)
65    o ecco_cost_weights is modified to 1x1 runs
66    o modifs to allow observations to be read in as
67      single file or yearly files
68    o enable to read exf forcing fields as either
69      single file or yearly files (flag useExfYearlyFields)
70    checkpoint55d_pre
71    
72    o switch between 2-level and 3-level checkpointing
73    o add ability of MNC to write local and "partial" (eg. 2D slices where
74      the full 3D field is never actually stored) arrays to NetCDF files
75      with the correct (that is, the complete multi-dimensional) set of
76      array indicies
77      - used in mom_vecinv() to write the diagFreq output
78      - tested (demonstrated) in verification/aim.5l_cs
79    o further mnc-ification
80      - add verification/lab_sea to the list with mnc setups
81      - fix undefined mnc v-names in cd_code
82      - add kpp to mnc output (both snapshot and timeave)
83    o non-hydrostatic code
84      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
85        in calc_gw.F
86      - defaults to viscAh
87      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
88        friction or Leith) in non-hydrostatic mode, as long as there is
89        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
90    o pkg/cost
91      extend simple cost functions to treat time mean quantities
92      (T,U,V) via cost_accumulate_state from cost_tile
93    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
94        be 2 times larger than the minimum size the advection scheme requires.
95        now get a perfect conservation of salt in advect_cs test-exp (updated)
96    o GGL90 (Gaspar's TKE mixed layer)
97      - add horizontal diffusion of TKE, requires exchanges in
98        do_fields_blocking_exchanges, horizontal diffusivity is zero by
99        default. In OPA there is no horizontal diffusion of TKE but the
100        mixing coefficients are computed from a horizontal average of TKE of
101        6 points or so. I think that diffusion has a little more physical
102        justification.
103      - clean up ggl90_calc in the hope of reducing memory usage (this hope
104        was in vain)
105      - mask tke-variable in ggl90_init
106    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
107    o fix biharmonic diffusion on CS-grid.
108    o more obcs stuff
109      - added obcs_external_fields_load as an alternative to the EXF-pkg option
110        for reading boundary values. This routine is called from
111        obcs_prescribe_read
112      - updated obcs_check
113      - changed sponge layer relaxation parameter units for days to seconds
114      - turned off sponge layer by default
115      - changed argument list of OBCS_CALC to myTime+deltaTclock
116      - fixed about 35 bugs in obcs_external_fields_load
117    
118    checkpoint55c_post
119    o obcs stuff
120      - new runtime flags useOBCSprescribe, useOBCSbalance
121      - re-arranged obcs_calc
122      - moved exf_getobcs to obcs_prescibe_read
123        obcs_prescibe_read is called after ORLANSKI stuff
124        and independent of it (executable can contain all).
125      - updated obcs_check
126      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
127        These may be necessary only if tangential velocities are
128        prescribed at OB, not sure, needs testing.
129    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
130      which simplifies the calls and passes the ifc check-bounds test
131    
132    checkpoint55b_post
133    o add a 2D scalar, Z location, exchange_2 routine.
134    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
135      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
136      affects advect_cs results (for the wrong reason): update output.txt
137    o use a more standard discretization for biharmonic viscosity ;
138     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
139      affects results of dome set-up: update output.txt
140    o fix gad_advection.F (CubedSphere part), back to version 1.23
141    o fix bug in mom_vi_del2uv.F (CubedSphere part).
142    
143    checkpoint55a_post
144    o merged code to
145      * prescribe/read time-dependent open boundaries
146        (works in conjunction with exf, cal)
147      * sponge layer code for open boundaries
148      * each boundary N/S/E/W now has its own CPP option
149        (healthy for the adjoint)
150    
151    checkpoint55
152    o up-to-date adjoint of previous breaks
153      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
154      - global_ocean_ebm: adjoint still needs fix (TLM ok)
155      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
156      - carbon: * remove tr1-related adjoint verification
157                * add ptracer as control variable
158    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
159      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
160    
161    checkpoint54f_post
162    o in verification/carbin/ remove experiment related to
163      ALLOW_PASSIVE_TRACER (array tr1 etc)
164      code_ad/ input_ad/ results_ad
165    
166    o add two new packages
167      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
168        + subject to optimization (memory)
169      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
170        + subject to reordering (many GOTOs in the original code)
171        + so far opps is called for every (i,j) point, and then operates in
172          the vertical; one may want to reorder the scheme in order operate in
173          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
174          fields)
175    o overhaul of IO so that we now have flags for MDSIO and/or MNC
176      - all verification tests compile and run with linux_ia32_g77
177      - defaults are compatible with current input files--nothing
178        should change if you were not previously using MNC
179      - MNC output has been added in numerous places (eg. timeave)
180        but there are still a few writes not yet do-able with MNC
181        (this is in progress)
182      - flags now allow for either/or/both use of MDSIO and MNC and
183        documentation will soon follow
184      - numerous small formatting cleanups for ProTeX
185    o add version info (via BUILD_INFO.h) to MNC and stdout
186    
187    checkpoint54e_post
188    o add two new packages
189      - pp81 (Packanowski and Philander, 1981), Richardson number and
190        stratification dependent mixing
191      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
192      - these scheme operate in a similar manner as KPP (without ghat, of
193        course), however there is only one diffusivity that is used for both
194        temperature and salinity (and passive tracers)ç
195    o add offline package
196    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
197      provided by Stephanie Dutkiewicz
198    o genmake2: add ability to search for C compilers and cleanup test output
199      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
200    
201    checkpoint54d_post
202    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
203    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
204      leading to additional shift by 5 days each year of integration
205       (i.e. leading to considerable offset over the years)
206    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
207    o start with no AB and no initial filtering (staggerTimeStep):
208      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
209    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
210      (external loading & cpl import/export stay in forward_step.F)
211    o update coupling interface to work with new staggerTimeStep
212    o change MDSIO ptracers_pickup.
213    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
214    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
215    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
216    
217    checkpoint54c_post
218    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
219      this affects (truncation error) output.txt of test-exp:
220       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
221    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
222    o change Qnet to always be the net heat flux, (+upward).
223      affects (truncation error) output of natl_box exp.: updated
224    o define the max number of passive tracers in PTRACERS_SIZE.h
225    o start to test mnc routinely in exp0
226    o add sea-ice loading (sIceLoad) as a new forcing field.
227    
228    checkpoint54b_post
229    o add testreport "-j JOBS" option for parallel builds (tested and pretty
230       impressive on Altix and Opteron systems)
231    o diagnostics can now write NetCDF files through the mnc package
232    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
233    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
234    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
235      affects (truncation error) output of lab_sea & natl_box exp.: updated
236    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
237    
238    checkpoint54a_post
239    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
240    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
241    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
242    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
243      + internal_wave (shift in writing cg2d_ini_res)
244    checkpoint54a_pre
245    
246    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
247      - modified verification/lab_sea and natl_box_adjoint accordingly
248    
249    checkpoint54
250    checkpoint53g_post
251    o prepare splitting of thermodynamics: store convect.counter in common block
252    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
253      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
254    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
255    o new parameter "nShapS": allow to treat differently S from T (nShapT)
256    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
257    o restore adjointability
258    
259    checkpoint53f_post
260    o modifications that affect AIM experiment results (update output.txt):
261      - no advection of S at top interface Nr (pkg/generic_advdiff)
262      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
263    o AIM pkg:
264      - include stability function into surf.Flux derivative relative to Tsurf
265      - calculate clear-sky radiation & surface temp. change (for diagnostics)
266    
267    checkpoint53e_post
268    o merged cylindrical coord configuration
269    o added rotating_tank experiment
270    checkpoint53e_pre
271    
272    checkpoint53d_post
273    o faulks upgraded: re-generate output.txt that have changed:
274       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
275    o Added Bryan and Lewis, 1979, vertical diffusivity profile
276    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
277    o added Sadourny discretization of Coriolis
278      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
279      - re-enabled use of omega3 (useAbsVorticity)
280    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
281      vector-invariant equations
282      - note: does *NOT* yet use same variable visc. for no-slip BC's.
283    o recoded the lateral boundary conditions for non-hydrostatic w, this time
284      hopefully without new bugs
285      - still to do: biharmonic friction for non-hydrostatic w
286    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
287    o regenerated output for global_ocean_ebm (using -ieee)
288    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
289      of mom_common/
290      - simple re-arrangement of instructions within computing loop
291    checkpoint53d_pre
292    
293    checkpoint53c_post
294    o new version of coupler for AIM+thSIce and Ocean models
295     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
296     - land: change Evaporation of snow
297     - aim with thSIce: fix bug in snow-precip.
298    o changes to calc_gw.F
299     - bug fix for w^2 term near the bottom boundary
300     - (hopefully) improve the lateral slip boundary condtions for use with
301        partial/looped cells
302      - because the bug fix changes two verification experiments anyway (exp5
303        and plume on slope), change the lateral boundary condition from half slip
304        to the value of no_slip_sides
305    o ebm package wasnt quite up to the parallel task. Fixed that.
306    o Adjoint of EBM package + verification
307      * TLM OK
308      * ADM not sufficient accuracy yet (needs further testing)
309    
310    checkpoint53b_post
311    o Commiting new energy balance model to repository
312      * package is pkg/ebm
313      * verif. is verification/global_ocean_ebm
314      * references are in ebm_driver.F
315    C      * X. Wang, P. Stone and J. Marotzke, 1999:
316    C        Global thermohaline circulation. Part I:
317    C        Sensitivity to atmospheric moisture transport.
318    C        J. Climate 12(1), 71-82
319    C      * X. Wang, P. Stone and J. Marotzke, 1999:
320    C        Global thermohaline circulation. Part II:
321    C        Sensitivity with interactive transport.
322    C        J. Climate 12(1), 83-91
323    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
324    C        Destabilization of the thermohaline circulation
325    C        by atmospheric eddy transports.
326    C        J. Climate 7(12), 1870-1882
327    o Will need long integration testing.
328    checkpoint53b_pre
329    
330    o created pkg/mom_common in preparation for variable viscosity code
331    o renamed and split ini_mnc_io
332    o pkg/land: only liquid water can diffuse or run-off
333    o AIM using land: soil wetness availability account for snow
334    o added printMapIncludesZeros to EEPARMS namelist
335    
336    checkpoint53a_post
337    o restore TAMC compatiility for exf_constants.h
338      (no usage of _d in .h)
339    o Additional storing in KPP in an attempt to fix
340      TAMC problem with adjoint of KPP code.
341      (no success...)
342      Identical code works fine with TAF.
343    o Fixed verification/natl_box_adjoint experiments.
344      Initial conditions for Experiments 4 and 5 are now
345      set to "SEAICE_initialHEFF=0", which is more reasonable,
346      and hence gives results closer to that of Experiment 2.
347      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
348    
349    checkpoint53
350    o stable checkpoint with up to date adjoint
351      TLM tests only run for 1st grdchk at the moment. Its unclear if
352      this is a code problem or a problem with resetting code for g_
353      variables that is being autogenerated wrong.
354      Otherwise:
355       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
356       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
357         are both still in chaos following their security messes.
358    
359    checkpoint52n_post
360    o various build (mostly genmake2) changes including:
361      - ability to build/run more easily within Cygwin and MacOS X
362      - more complicated Makefiles with a stronger dependence on Gnu Make
363    o pkg/seaice modifications
364      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
365        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
366        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
367      - changed proxy for geostrophic velocity and updated
368        verification/lab_sea/results/* accordingly
369      - removed ADI dynamic solver from pkg/seaice
370      - replaced all occurrences of 1/CSTICE or 1/CSUICE
371        they caused a segmentation fault under certain circumstances
372      - removed unused field WATR
373    o bug fix in exf-package:
374      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
375         now reflect that.
376    o small fixes in the cal-package:
377      - set reference date to first of January for the 'model'-calendar
378      - failing of cal_CheckDate in cal_FullDate now actually results in a
379        warning
380    o small modifications in exf-package to increase flexibility:
381      - change climtempfreeze from a constant to a runtime parameter that
382        is specified in data.exf_clim (default = -1.9)
383      - introduce runtime parameter windstressmax (default = 2.0) that is
384        specified in data.exf
385    o fix in pkg/thsice:
386      - update Evap (Tsf changes) to be consistent with Latent heat flux
387      - maintain snow precipitation unchanged (even if Tsf >=0).
388     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
389    
390    checkpoint52m_post
391    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
392      this does not change any of the results, because myIter=0 in swfrac always
393      lead to jwtype=2 (the default anyway), but the call makes little sense
394      as a default
395    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
396    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
397      atmospheric model (AIM) to use it ; add a "slab ocean" component.
398    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
399    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
400    o extending useSingleCpuIO option to work with new exch2 I/O format
401      - old-style, missing-tile I/O is still accessible by defining CPP
402        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
403    o monitor package can write to NetCDF files and/or STDOUT
404    o fix re-definition bug in MNC_GRID_INIT_ALL()
405    o doc/api_reference added
406      - a framework for building an API Reference Manual using all
407        the "protex" comments embedded in the code
408      - see pkg/generic_advdiff, pkg/mnc for examples
409    o MNC:
410      - make myThid the last argument for all subroutines
411      - new default for the grid files: NO halos
412      - add useMNC and other run-time flags
413      - separate per-file-group handling of the unlimited dimension
414      - early initialization of MNC w/ flags read at the eeboot stage
415        and lookup tables set in initialize_fixed
416      - write all MNC output to a freshly-created directory
417    o thermodynamics sea-ice (thsice) is now tested with testreport.
418    o test exp. advect_cs: use the standard cs32 grid ; update output.
419    o Added functionality to grdchk:
420      pick global i,j,k position (or nearest wet) where to perform check.
421    
422    checkpoint52l_post
423    o new land formulation:
424      a) use ground enthalpy as prognostic variable to ensure exact
425         energy conservation.
426      b) account for water temperature and for latent heat of freezing
427         in all processes (rain, run-off, ground storage)
428      c) compute surface and ground temperature implicitly.
429    o aim_v23 modification for new land model:
430      a) Treat separately land / ocean / sea-ice surface fluxes
431         to allow implicit computation of land & sea-ice surface temp.
432      b) add snow precipitation.
433    checkpoint52l_pre
434    
435    o fix problem (when 1 tile is empty) in min/max monitor.
436    o fix bug in timeAve (u,vZetatave in common block)
437    o no restoring terms under ice for pkg/seaice
438    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
439    o bug fix for pkg/seaice pickups
440    o change MNC call locations and add coordinate attributes
441    o mask vorticity at the corner ; affects global_ocean.cs output
442    o fix ini_curvilinear_grid ; test CS experiments with mpi
443    o aim.5l_cs: modify sea-ice fraction input file ; update output
444    o exf: Adding simple range check routine for exf fields after read
445    
446    checkpoint52k_post
447    o removed top-level directory "diags"
448      - we migrated these functions to pkg/timeave a long time ago
449    o fixed bug introduced in pkg/monitor
450    o accuracy ctrlprec = 32 insuffient for gradient checks using
451      averaged fields (I/O via cost_averages)
452      -> use ctrl.h in active_file*.F to control I/O precision.
453    o paramter list of CALL ADTHE_MAIN_LOOP
454    o added initial do_the_model_io to ecco
455    o set all ...Freq to zero after cost_final
456      taveFreq, dumpFreq, pChkptFreq
457    o MAIN and ECCO differentiability restored
458    
459    checkpoint52j_post
460    o fix nchklev in tamc.h for global_ocean...
461    o Bringing flow and store directives up-to-date
462    o Really weird thing!
463      call do_the_model_io from the_main_loop with parameters
464      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
465      TAF places a faulty re-call of initialise_varia
466      after cost_final call which should not be there!
467    checkpoint52j_pre
468    
469    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
470      error messages
471    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
472    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
473      debug output
474    o modfied mdsio_writefield.F to handle non-global files under exch2
475    o update AIM Cubed-Sphere exp (aim.5l_cs):
476      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
477    o update AIM Equatorial Channel exp:
478      use standard aim_v23 pkg and change the SST fields to be more realistic.
479    o globalFile now works with exch2
480    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
481      mon_vort3.F to make exch2 friendly with >1 tile per cube face
482    o limit timeave output for hi-res integrations
483    
484    checkpoint52i_post
485    o removed CPP_EEOPTIONS.h from verification/*/code
486    o updated the tiling for global_ocean_pressure
487    checkpoint52i_pre
488    
489    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
490      the old pkg/aim).
491    
492    checkpoint52h_pre
493    o shortened offending lines in exch2_send_rx?.template
494    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
495    o genmake2: add build & execute test for NetCDF code
496    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
497      old grid files, moved CPP_EEMACROS.h to pkg/exch2
498    o added useSingleCPUIO flag to monitor.F and mon_out.F
499    o added temporary hack for sea-ice dynamics on the cube:
500      metric terms are ignored and it is assumed that
501      there is no sea-ice on cube faces 1, 2, 4, and 5.
502    
503    checkpoint52f_post
504    o added exch2 cube routines to pkg/exch2
505    o modified hs94.cs-32x32x5 to use it
506    o added new grid files to hs94.cs-32x32x5
507    checkpoint52f_pre
508    
509    checkpoint52e_post
510    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
511      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
512    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
513      to work with implicit vertical advection and AB ;
514    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
515    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
516     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
517    checkpoint52e_pre
518    
519    o fix bug in impldiff when Nr=1 or Nr=2.
520    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
521    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
522    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
523      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
524    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
525    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
526    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
527    
528    checkpoint52d_post
529    o re-tiled many expts to allow comparison in multi-processor mode
530      - updated output accordingly
531      - changed hs94.128x64x5 to use intial T from file rather than use the
532        random number generator
533    o add infrastructure in model routines for fizhi and gridalt packages
534    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
535    o changes to permit hi-res, cubed-sphere, configuration
536      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
537      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
538      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
539        of surface winds for the cube
540      (A verification experiment, based on global_ocean.cs32x15, but with
541       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
542       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
543       complete with example surface forcing files and matlab scripts to look
544       at the output and compare it with that of global_ocean.cs32x15.)
545    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
546       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
547       to conform to the common rule.
548    o check-in the first version of the coupler + interfaces for multi-components
549       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
550       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
551       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
552       - ocean and atmos. share the same horizontal grid (no interpolation).
553       - exchanges between component and coupler is done in forward_step
554    o new verification experiment, cpl_aim+ocn:
555       coupled ocean - AIM atmosphere on cs32 grid.
556    
557    checkpoint52d_pre
558    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
559    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
560    
561    checkpoint52c_post
562    o Fixing OPTIONS files for use of exf:
563      - ALLOW_ECCO not needed
564      - ECCO_CPPOPTIONS.h should not be included from
565        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
566        as has been the case in the past
567      - All cal/exf related options are currently set in
568        single header file. Should remain so until we
569        agree on a consistent new policy.
570    o Removed all CPP options for cal package.
571      cal has no more CPP options.
572    o modified STOREs in GAD_ADVECTION
573    o corrected key comp. for passkey
574    
575    checkpoint52b_post
576    o new version: "thsice" of thermodynamic sea-ice pkg:
577     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
578     - modify fluxes but do not change theta directly;
579     - light cleaning of bulk_force pkg (still needed with thsice).
580     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
581       + output_thsice.txt to test thsice & bulk_force pkgs.
582    o put back grid & coriolis monitor output.
583    checkpoint52b_pre
584    
585    o call "do_the_model_io" at the beginning (=> dump initial state)
586    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
587    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
588      (need info on NUMBER_OF_PTRACERS)
589    o missing PTRACERS headers in some routines
590    o default tamc.h in pkg/autodiff supposed to crash
591      to ensure proper customization
592    
593    checkpoint52a_post
594    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
595      - moved surfaceTendencyTice from pkg/seaice to main code
596      - subroutine FREEZE_SURFACE now limits only surface temperature
597        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
598        => new output.txt for global_ocean.cs32x15 & global_with_exf
599      - keep the old version of FREEZE for backward compatibility;
600        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
601      - corresponding modifs for TAF directives
602    o added surface flux output variables to TIMEAVE_STATVARS
603    o time-averaged output for pkg/ptracers
604    o fix problem with ECCO-related divided adjoint
605      snapshot file was missing some ad-variables,
606      but no warning issued by TAF
607    
608    checkpoint52a_pre
609    o some bug fixes for #undef REAL4_IS_SLOW
610    
611    checkpoint52 = ecco_c52_e35
612    o after testing adjoints of checkpoint51u_post
613    
614    checkpoint51u_post
615    o this is the post-merge tag of the ecco-branch
616      (needs another clean checkout and re-testing)
617    o various natl_box_adjoint configs and results
618      but no input fields
619    o obcs adjoint not yet merged!
620    o adding ECCO global 1x1 and 2x2 degree configs
621    o updated/extended some store directives for seaice
622    o pkg/ecco now containes ecco-specific part of cost function
623    o top level routines the_main_loop, forward_step
624      supersede those in model/src/
625      previous input data.cost now in data.ecco
626      (new namelist ecco_cost_nml)
627    o in ctrl/ cleaned some cross-dependencies and updated CPP options
628    
629    checkpoint51t_post
630    o this is the pre-merge tag of the ecco-branch
631    
632    checkpoint51s_post
633    o cleanup: removed various obsolete #define-s
634    o pkg/grdchk
635      - renamed 'ph-grd 3' to 'grad-res'
636      - merged from ecco-branch
637        (remaining bug fixes for obcs gradient checks)
638      - additional high-precision output for testreport
639        (grep for 'precision_grdchk_result')
640    
641    checkpoint51r_post
642    o cleaned up or removed CPP_OPTIONS.h files
643    o updated results for some of the tests to reflect the new
644      optfiles (-ieee: -O0 instead of -O3)
645    
646    checkpoint51q_post
647    o cd_code:
648      - moved cd_scheme.F -> cd_code_scheme.F
649      - separate read_checkpoint from cd_code_ini_vars.F
650      - separated cd_code part from write_checkpoint
651      - updated AD_SOURCE, generated .flow
652      - added CD_CODE_VARS.h to the_main_loop
653      - Moving cd_code specific store dir.s to pkg/cd_code
654    o ctrl package totally restructured
655      - pack/unpack now optional and decoupled from
656        xx_/adxx_ I/O
657      - ctrl_pack/unpack cleaned
658        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
659      - confined inclusion of AD_CONFIG.h to where necessary.
660    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
661    
662    checkpoint51p_post
663    o create initial cd_code package
664      - WARNING: the initialization of fields within packages
665        is broken because INI_FIELDS (where READ_CHECKPOINT is
666        called) is called *before* PACKAGES_INIT_VARIABLES.
667        This seems to be backwards since
668        1) its important to initially zero the entire field including
669           the "halo" region
670        2) zeroing needs to be done *before* reading pickup info
671           and the pickup call might or might not happen in any
672           particular run
673      - this needs an overhaul for R2
674    o cleanup verification/*/code/GMREDI_OPTIONS.h
675    o cleanup testreport
676    
677    checkpoint51o_post
678    o bringing AD-related verif's up to date with genmake2
679      - carbon/
680      - global_ocean.90x40x15/
681      - hs.94.1x64x5/
682      - (front_relax/ )
683    o (more) consistent directory structure for AD-related verif.'s
684    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
685    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
686    o bug fix in find_alpha.F for MDJWF:
687      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
688        change rho -> rho-rhoConst
689      - replace call find_rho to find_rhonum
690    o initialisation of rFlx extended to full array (required by TAF)
691      and shifted to thermodynamics
692    o removed PTRACERS.h in ptracers routine
693    o added surfacetendencyPtr to S/R parameter list pracers_forcing
694    o Correcting initialisations for fVerU, fVerV.
695    o helping TAF to recognize dependency on kUp for
696      fVerU, fVerV
697    o Replacing delZ by delR in pkg/ctrl/
698    checkpoint51o_pre
699    
700    o undid all of cp51 pending some cleanups and discussion
701    o added the [#include "AD_CONFIG.h"] statement to all files that need
702       it for adjoint/tl #defines
703     o re-worked the build logic in genmake2 to support AD_CONFIG.h
704     o removed tools/genmake since it no longer works
705    
706    checkpoint51n_post
707    o modifications to make FREEZE flux visible to pkg/kpp
708      - moved surfaceTendencyTice from pkg/seaice to main code
709      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
710      - subroutine FREEZE now limits only surface temperature
711        (this means new output.txt for global_ocean.90x40x15,
712         global_ocean.cs32x15, and global_with_exf)
713    o added surface flux output variables to TIMEAVE_STATVARS
714    
715    checkpoint51n_pre
716    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
717    o added [#include "AD_CONFIG.h"] to all files that use the following
718      defines:
719      - ALLOW_ADJOINT_RUN
720      - ALLOW_TANGENTLINEAR_RUN
721      - ALLOW_ECCO_OPTIMIZATION
722    
723    checkpoint51m_post
724    o incorporating changes to get TAMC/TAF working in genmake2
725      - added new TAMC/TAF targets to the Makefile
726      - various cleanups related to package handling
727      - these changes should have no impact on the forward model
728    
729    checkpoint51l_post
730    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
731     - faster algorithm for cal_addtime.F
732     - higher precision arithmetic, where needed
733     - pkg/exf *startdate variables changed from calendar date to
734       model integration time
735    
736    checkpoint51l_pre
737    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
738    o enable to apply restoring on S & T only in a latitude band.
739    o update output (external_forcing_surf modif. change truncation errors)
740       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
741    
742    checkpoint51k_post
743    o change default to: useNHMTerms=.FALSE.
744     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
745       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
746     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
747        exp1, ideal_2D_oce
748     - change data file of oceanic exp (leave the results unchanged for now)
749       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
750    o set gravitySign automatically according to the vertical coordinate used
751      (and change sign: back to "logical" value: +1 when R increases downward)
752    o added an include barrier to the default CPP_OPTIONS.h and
753      removed the #include "PACKAGES_CONFIG.h" from it
754    o fix a bug in mom_fluxform (from chk51j_post)
755    
756    checkpoint51j_post
757    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
758    o adjusted some flow directives (dynamics, thermodynamics)
759    o added cubed-sphere case to test cost function
760    o heckpoint_lev?_directives.h now include
761      pkg-specific directives, whenever those are enabled.
762    o Moving pkg-specific flow directives to corresponding pkg
763      Moving pkg-specific differentiation list to corresponding pkg
764      Moving pkg-specific checkpoint-lev storing to corresponding pkg
765      ---> conventions are
766           - pkg_ad.flow
767           - pkg_ad_diff.list
768           - pkg_ad_check_lev?_dir.h
769    
770    checkpoint51i_post
771    o merge of the branch-genmake2
772      - knowingly breaks the older genmake
773      - automatic generation of all ALLOW_${PKG_NAME} defines
774      - new testreport supersedes older testscript
775    o large number of package inclusion and header cleanups
776    checkpoint51i_pre
777    
778    o new output for adjoin of global ocean vector invariant
779    o fix for checkpoint of thermodynamic seaice and bulk_force
780    o Steph gchem various cleanups
781    
782    checkpoint 51h_pre
783    o fixed some single quotes
784    o modify gchem pkg to be more versatile
785    o modifications to clean up dic pkg
786    o add pkg/cfc
787    
788    checkpoint51g_post
789    o provide links for ARPACK and ADM*TLM
790    o start removing verification/vero/
791    o update AD-related stuff
792      (in particular some IF-statements in model/src/ routines)
793    o adding to verification/global_ocean.90x40x15/ adjoint of
794      vector invariant setup
795    
796    checkpoint51f_post
797    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
798    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
799      of tracer Green's fucntions for ocean inversion project.
800    
801    checkpoint51f_pre
802    o Added on-the-fly spatial interpolation capability
803        "USE_EXF_INTERPOLATION" to pkg/exf.
804      - This is a temporary Cartesian-grid hack until
805        the super-duper ESMF coupler becomes available.
806      - See verification/global_with_exf/README for usage example.
807      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
808        flags and modified pkg/seaice accordingly.
809    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
810        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
811        non-local transport term.
812    
813    checkpoint51e_post
814    o pkg/mom_vecinv:
815      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
816      - add time-ave diagnostic of vorticity advection.
817    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
818    o atmospheric geopotential: - include water vapor effect;
819                                - use p^kappa in p* scaling.
820    o land pkg: read initial state from files.
821    o AIM : add stratospheric drag in the upper level
822    
823    checkpoint51d_post
824    o change function ILNBLNK (=> last non-blank char.) to return zero
825      (instead of the string length) when the string. char is empty
826    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
827    o modif's to restore TAMC compatibility
828      - avoid "_d" constructs in PARAMETER declarations
829      - avoid interrupting lines by comment lines
830    o Use cluster local disks for purely local I/O
831      vs. globally visible disks needed for ctrl stuff
832      (merged from ecco-branch)
833      - new active_file_loc... and mdsio_..._loc routines
834      - affected packages: autodiff, ctrl, grdchk, mdsio
835    
836    checkpoint51c_post
837    o introducing integer flag debugLevel
838      - debLevZero: suppress all output
839      - debLevA: standard
840      - debLevB: equivalent to current debugMode=.TRUE.
841    o introducing pathname variable mdsioLocalDir for mdsio
842      that can be specified at runtime
843      (relevant for cluster I/O to local disk)
844    `
845    >>>checkpoint51b_post
846    adjoint of ptracers
847    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
848    o extended state in checkpoint_lev?, etc.
849    o alternative ctrl/cost with tr1 or ptracer
850    o new comlev1_bibj_ptracers
851    o new ptracers.flow
852    o made ptracers_forcing same as external_forcing_s
853    o added verification for adjoint with ptracers
854      - adm. grdchk fail so far
855      - tlm. grdchk OK
856      - checked tapelev/comlev recomputations: OK
857    <<<checkpoint51b_pre
858    
859    checkpoint51a_post
860    o added code for biogeochemistry package
861      - new pkgs: dic, gchem
862      - new subroutine in ptracers
863    o modify code for biogeo packages
864      - in model/src and pkg/ptracers
865    
866    checkpoint51
867    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
868      - autodiff, ctrl, exf, grdchk, seaice
869      kept separate packages
870      - cost, ecco, obcs
871    o updating verification/internal_wave, verification/lab_sea
872      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
873    
874    checkpoint50i_post
875    o Preparing next differentiable checkpoint and sync
876      of MAIN vs. ecco-branch
877      - 1st step: this one is differentiable
878      - 2nd step: next(! not this) checkpoint will have updated packages
879                  from ecco-branch)
880    
881    checkpoint50h_post
882    o new package "land": provide surface BC for AIM.
883    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
884    o AIM: use true log-P extrapolation for near surface temp (= as in
885        F.Molteni paper) ; update aim.5l_cs output.
886    o New variable in PARM03 for more flexible pickups
887    o somewhat cleaned package initialisation sequence for
888      ctrl/ cost/ ecco/ in packages_... routines
889    
890    checkpoint50g_post
891    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
892      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
893      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
894        made the default because of faster convergence than ADI
895    
896    checkpoint50f_post
897    o exf totally restructured
898      - replaced all exf_set_ routines by one generic exf_set_gen.F
899        and made sure it's still differentiable
900      - split exf_getffields.F into new exf_bulkformulae.F
901      - exf_inscal_/exf_outscal_ suffixes consistent with field names
902      - updated adjoint/makefile and relevant verif. accordingly
903    
904    checkpoint50f_pre
905     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
906          + change Evap over land. (update aim.5l_cs output)
907     o added missing .cvsignores and made uniform across expts
908     o changed configuration of tidal_basin_2d expt
909     o added pkg/debug functions for tracing code in fatal crashes
910     o tidied pkg/monitor to use MONITOR_OPTIONS.h
911     o new fn in pkg/monitor to stop model if solution grows too big
912     o removed lots of single quotes from comments
913    
914    checkpoint50e_post
915    o make KPP work with PTRACERS
916     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
917       nearly a copy of kpp_transport_s
918     - there is no analogue to SurfaceTendencyS, so I have to use
919       gPtr(of the surface layer) instead
920    o add a new platform SunFire+mpi (SunFire 15000) to genmake
921    checkpoint50e_pre
922    
923    checkpoint50d_post
924    o change kpp output from multiple-record state files to single-record state
925      files analogous to write_state.F
926    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
927      analogous to the cg2d-related output.
928    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
929      so that writing to internal file fn (with length 512) fails.
930    checkpoint50d_pre
931    
932    checkpoint50c_post
933    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
934    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
935    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
936    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
937    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
938    
939    checkpoint50c_pre
940    Merging from release1_p13:
941    o bug fix for pkg/seaice dynamic solver
942    o Added SEAICE_initialHEFF to pkg/seaice
943    
944    checkpoint50b_post
945    o store u*,v* in gU,V instead of in guNm1,gvNm1
946    o in order to put the momForcing out of the Adams-Bashforth:
947      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
948      to timestep.F
949    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
950    o re-generate output for highly sensitive test-exp:
951       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
952    
953    checkpoint50b_pre
954    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
955    o corrected CPP option mismatch in exf_Bulk... functions for case
956      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
957    
958    checkpoint50a_post
959    o Bug fix for merging between c50 and KPP.
960      ikey was passed from thermodynamics to kpp_calc via
961      common block rather than being recomputed in kpp_calc,
962      in contradiction with new key itdkey.
963      New key ikppkey created, and tamc.h headers updated.
964    
965    checkpoint50
966    - 2nd step of merge with ecco-branch:
967      merge changes in ecco-branch back into main trunk
968    - bug fix in find_alpha
969    - more storing in gmredi_calc_tensor.F, kpp_routines.F
970    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
971    - merged some sliced AD support routines
972    
973    checkpoint49
974    merged from ecco-branch:
975    o exf:
976      - Enable initialisation of forcing fields to constant
977        (runtime) values.
978      - in exf_getffields.F
979        Reduce i-/j-loop to interior domain, discarding overlaps.
980        That also fixes wrong TAF-key computations for key_1, key_2
981        with bulf formulae.
982      - exf_init.F modify #ifdef for exf_init_evap
983      - exf_getffieldrec.F, ctrl_getrec.F
984        The following INT-usages are not safe:
985          fldsecs  = int(fldsecs/fldperiod)*fldperiod
986          fldcount = int(fldsecs/fldperiod) + 1
987        and were modified.
988    o autodiff: checkpoint_lev...
989      - updated storing for bulk formulae (some arrays were missing)
990      - added state for seaice package
991      - synchronized with main branch
992    o DIVA:
993      Modif.s in
994      - the_main_loop.F
995      - the_model_main.F
996      and added cost_final_restore.F cost_final_store.F
997      o With these changes, it is possible to fully separate
998        the first forward run to compute the cost function (mdthe_main_loop)
999        and adjoint runs over individual DIVA intervals (adthe_main_loop)
1000        into separate model executions.
1001        This enables better tuning of DIVA to given queue sizes.
1002      o Loss of cost function value in consecutive DIVA runs is
1003        fixed by storing to 'costfinal' file.
1004      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
1005        beginning/end of adjoint integration is accounted for.
1006      The current changes apply to TAF-1.4.26.
1007      TAF has one remaining bug, requiring one manual change
1008      (see MITgcm manual).
1009    o cal: synchronized between MAIN and ecco-branch
1010    
1011    checkpoint48i_post
1012    o Changes to restore differentiability of code w.r.t. previous tag
1013      (mostly adding new routines to make list and replacing
1014      pressure by totPhiHyd).
1015    o Updated and merged grdchk package
1016      - has both ADM and TLM checks
1017      - works for single- and multi-proc.
1018      - output cleaned
1019      - worked successfully for parallel DIVA
1020    o genmake:
1021      - Adding -platform=SP4
1022      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
1023    o Modif. for DIVA:
1024      ctrl_unpack should not be called in intermediate DIVA interval.
1025      (similar thing would apply for active files such as
1026      tbar, sbar, psbar, which should not be reinitialised;
1027      only relevant for ecco-branch)
1028    
1029    checkpoint48h_post
1030    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
1031    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
1032    o Added SEAICE_initialHEFF to pkg/seaice
1033    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
1034    
1035    checkpoint48g_post
1036    --- EOS:
1037    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
1038      store total Potential in totPhyHyd for diagnostics & EOS.
1039    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
1040    --- Pressure/geopotential gradient:
1041    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
1042    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
1043      ( changes results of global_ocean_pressure )
1044    o NLFS + z-coord.: add eta*Rho' contribution.
1045    o accurate phiHyd when using interface-W at the middle between 2 centers
1046     ( changes results of ideal_2D_oce )
1047    o includes r* 2nd term in potential gradient.
1048    
1049    checkpoint48f_post
1050    Merging from release1_p12:
1051    o Modifications for using pkg/exf with pkg/seaice
1052      - improved description of the various forcing configurations
1053      - added basic radiation bulk formulae to pkg/exf
1054      - units/sign fix for evap computation in exf_getffields.F
1055      - updated verification/global_with_exf/results/output.txt
1056    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
1057      (SBO) core products, including oceanic mass, center-of-mass,
1058      angular, and bottom pressure (see pkg/sbo/README.sbo).
1059    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
1060      to avoid negative values in shallow regions.
1061      - updated verification/natl_box/results/output.txt
1062      - updated verification/lab_sea/results/output.txt
1063    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
1064    o Added useSingleCpuIO option (see PARAMS.h).
1065    o Updated useSingleCpuIO option in mdsio_writefield.F to
1066      work with multi-field files, e.g., for single-file pickup.
1067    o pkg/seaice:
1068      - bug fix in growth.F: QNET for no shortwave case
1069      - added HeffFile for specifying initial sea-ice thickness
1070      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
1071    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
1072      kpp_transport_t.F, forward_step.F, and the_main_loop.F
1073    o pkg/seaice:
1074      - adjoint-friendly modifications
1075      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
1076    
1077    checkpoint48e_post
1078    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
1079    o dynamics: change definition of computational domain & adapt mom_fluxform
1080      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
1081    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
1082        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
1083        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
1084        global_ocean.90x40x15 global_with_exf global_ocean_pressure
1085        inverted_barometer solid-body.cs-32x32x1
1086      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
1087    
1088    checkpoint48d_post
1089    o in preparation for r*:
1090     a) use pre-computed gradient of hydrostatic potential:
1091        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
1092     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
1093        => affects results of glob_oce_pressure (different truncation error)  
1094      update output.txt of ideal_2D_oce & global_ocean_pressure
1095    
1096    checkpoint48d_pre
1097    o in preparation for r*:
1098      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
1099      pass the 2 comp. of the grad. as arguments to momentum S/R.
1100      but for the moment, only used if it does not change the results.
1101    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
1102    
1103    checkpoint48c_post
1104    Modifications in treatment of initial flux forcing controls
1105    to avoid extra storing of flux fields.
1106    
1107    checkpoint48c_pre
1108    o Added tidal_basin_2d experiment (currently 1D!)
1109    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
1110    
1111  checkpoint48b_post  checkpoint48b_post
1112  o r* coordinate added in #ifdef NONLIN_FRSURF block.  o r* coordinate added in #ifdef NONLIN_FRSURF block.
1113   (modification to pressure gradient not yet implemented)   (modification to pressure gradient not yet implemented)

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