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revision 1.671 by jmc, Thu Jun 8 01:13:52 2006 UTC revision 1.899 by dimitri, Fri Oct 26 02:00:47 2007 UTC
# Line 4  $Name$ Line 4  $Name$
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    o new read/write pickup version:
8      - for now, only implemented for main (mdsio) pickup file.
9      - write out only what is needed to restart; merge pickup_nh , pickup_ph
10        and main pickup together.
11      - read meta file; read only what is needed to restart; stop if a field
12        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
13        if it make sense (even if the restart is not perfect).
14      - if no meta file, assume that pickup to read corresponds exactly to
15        a pickup that would currently be written.
16      - read pickup written in the old format (until checkpoint59i) if it
17        recognizes an old meta file (no field-list).
18      - add a meta file in exp. which starts from a pickup: 2 cases:
19        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
20         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
21        b) a meta file describing the content of the associated pickup file
22         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
23    o pkg/mdsio & pkg/rw:
24      - new routine to read a meta file ; new set of routine to read
25        Multiple-fields file (with meta file).
26    o added open boundary conditions capability for seaice
27        HSNOW, HSALT, UICE, and VICE
28    
29    checkpoint59i
30    o adjoint:
31      * fix multiDimAdvection adjoint
32        (partial recomputation problem by TAF for fVerT(:,:,kDown)
33        and comlev1 size definition (maxpass vs. max. number of tracers)
34      * verification/global_ocean.90x45x15 adjoint now tests
35        NLFS and multiDimAdvection using DST3 (=30)
36      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
37    o pkg/kpp: add "_d 0" to real constant (if missing);
38      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
39      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
40    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
41      for internal parameters related to restart process (formerly from PARAMS.h)
42      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
43    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
44      as argument. (only atm2d & obcs write_pickup have not yet been updated)
45    o pkg/monitor:
46      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
47      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
48      - account for deep Atmosphere factor and density factor (anelastic)
49    o added open boundary conditions capability for seaice HEFF and AREA
50    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
51      thermodynamics
52      - requires a little reorganization, which affects the testreport results
53        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
54        so that now the conservative form is tested
55      - add a few comments
56    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
57    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
58    o add new diagnostics to seaice: advective, diffusive fluxes (only for
59      multidim-advection, for scheme 2 they are not filled) and transports,
60      thermodynamic growth rates
61    o change units of EmPmR (inside the code) from m/s to kg/m2/s (mass flux) but
62      leave input file unchanged. Affects results @ truncation level (cg2d match)
63      and update output of experiments: lab_sea(6), global_ocean.90x40x15(10),
64      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
65      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
66      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
67    
68    checkpoint59h
69    o pkg/exf:
70      - improve vectorization by moving if-statement out of loops in
71        exf_mapfields, exf_radiation
72      - exf_bulkformulae.F: introduce 2D fields and vectorize code
73    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
74    o testreport:
75      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
76        monitor & update offline_exf_seaice exp. output.
77      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
78    o pkg/seaice:
79      - bug fix in the evp solver: boundary conditions were affected be
80        masking of zMax/zMin (changes results)
81      - minor bug fix in boundary conditions in seaice_calc_strainrates
82        (changes results for no_slip)
83      - seaice_lsr.F: make interpolation of eta dependent on boundaries
84      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
85      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
86        stress formulation and no-slip boundary conditions
87    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
88      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
89    o pkg/seaice: a first HSALT time stepping equation has been checked in
90    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
91      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
92      without requiring DO-IF statements
93    o pkg/thsice:
94      use continuous power-law function for partition of energy between lateral
95      melting/freezing and thinning/thickening ; old code using step function
96      still available with #undef THSICE_FRACEN_POWERLAW
97      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
98    o testreport: change AD testing : check against results/output_adm.txt
99      using same scripts as for forward test.
100    
101    checkpoint59g
102    o adjoint testing: in preparation for changing testreport:
103      - output format: cost and grad written on separated lines
104      - ad output results in directory "results" (instead of "results_ad")
105    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
106    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
107    o pkg/ecco: allow user defined cost function contributions
108    o testreport:
109      Allow to choose (per experiment) the list of tested output variables
110       and the main variable (used to issue a pass/FAIL ) ;
111      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
112      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
113      Also modify printing of summary:
114       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
115       b) echo the list of tested variables in the individual summary.txt of
116          each experiment.
117    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
118      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
119      (but still depend on the tile decompostion of the domain).
120    o pkg/seaice: change a discretization detail to make the B-grid code
121      "more symmetric". This change is likely to remove all "ridges/leads" that
122      where quasi-aligned with the grid in B-grid solutions. It may also be
123      the solution to the stress coupling issues with the B-grid.
124    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
125      remove .cvsignore from input dir. (since testreport no longer run here).
126    o pkg/thsice:
127     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
128     - fix reshaping of sea-ice just after advection:
129       melt all the ice only if ice-volume is too small.
130     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
131       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
132     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
133    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
134      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
135    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
136      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
137      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
138      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
139      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
140      -> update output.txt
141    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
142     this affects truncation error: -> update output.txt of exp:
143      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
144      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
145    
146    checkpoint59f
147    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
148    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
149      a bounded range (in forward mode)
150    o pkg/ecco, ctrl, autodiff and mom_common:
151     internal parameter controls, completements of implementations
152    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
153    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
154      (not seem any difference in testing results).
155    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
156       at face corners.
157    o pkg/generic_advdiff:
158     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
159      loop range indices for computing vertical advection tendency
160      and do the calculation in the interior only (no overlap) ;
161      for now, only implemented for SOM advection (to save CPU time).
162     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
163    o exch2 adjoint
164      First set of changes:
165      - add exch2 hand-written adjoint templates
166      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
167        This will require cleanup in pkg/autodiff/*.F
168        (changed routines currently kept separate in verif. code/)
169      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
170        that used to hide exch2 or cubed-sphere specific code
171        (commented via 'cph-exch2')
172    o pkg/seaice
173      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
174    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
175       output of global_ocean.cs32x15.thsice .
176    
177    checkpoint59e
178    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
179      for B-grid vector (not yet tested) and C-grid vector (<- only used
180      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
181    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
182      (#ifdef ALLOW_SALT_PLUME)
183    o gather_2d/scatter_2d: removed halo regions
184    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
185      scheme and the corresponding test case (under front_relax dir). For now,
186      only available with Skew-flux form and not yet tested in realistic set-up.
187      adjoint: store directives updated, but gradient checks deteriorated,
188      so maybe GM/Redi adjoint is now broken.
189    o seaice adjoint
190      * add AREA, HEFF, HSNOW as control variable
191        (should not change lab_sea results)
192      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
193    o pkg/seaice:
194      * added computation of saltFlux in seaice_growth;
195        For time being, sea ice salinity is assumed constant
196        contribution of snow flooding to freshening of sea ice is neglected.
197        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
198        defaults to 0.0 in order to maintain backward compatibility.
199        Typical values for SEAICE_salinity are 4 to 10 g/kg.
200      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
201      * added SEAICE_availHeatFrac, which specifies fraction of surface level
202        heat content used to melt or grow ice
203      * commented out cap of HICE: it helps keep ice thinner
204      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
205      * applied OBCS T/S mask to HEFFM sea ice mask
206    
207    checkpoint59d
208    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
209     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
210     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
211    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
212     and change default value of parameter "GM_Small_Number";
213     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
214       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
215       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
216    o pkg/ecco: cost function when applying pkg/smooth to controls
217    o pkg/ctrl: add forcingPrecond run time parameter
218    o pkg/seaice:
219     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
220     - fix bug in metric terms of u-equation in LSR solver (implicit part),
221       changes verification/lab_sea
222     - rearrange implicit part of u-equation in LSR solver to make it easier to
223       read, understand, and debug. This causes changes at the truncation level.
224     - fix (serious) bug in the boundary conditions (sign error in the implicit
225       part) of the LSR solver. Changes all LSR results.
226     - fixed problem with HSNOW initialization to avoid thick snow when AREA
227       is initilized with small values - does not change lab_sea results.
228     - added HsnowFile initialization capability
229    o pkg/smooth: addition to model/src and pkg/ctrl so allow
230     initialization of pkg/smooth and application to control vector
231    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
232    o dependencies: pkg/profiles requires pkg/cal
233    o pkg/profiles:
234     - added option ALLOW_PROFILES_GENERICGRID
235         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
236         that interpolation information (grid points and coefficients) is provided
237         within the netcdf input files.
238         -> sample matlab scripts can be found in MITgcm_contrib/gael
239         that allow you to prepare netcdf input files.
240     - also modified: cleaner include statements, cleaner error print statements,
241       cleaner stops when error, and more tests of the netcdf input files consistency.
242    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
243    o pkg/seaice:
244     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
245       requires a new routine: seaice_diagnostics_fill.F
246     - make sure that seaice does not move if not forced (pressure replacement
247       method, Hibler and Ip, 1995), changes results
248     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
249     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
250       It is turned off by default (=-1.), because it changes the results.
251     - make it possible to read AREA from a file, too.
252    
253    checkpoint59c
254    o add S/R and diagnostics for oceanic mixed-layer depth
255    o move GMRedi call after all vertical mixing schemes (including KPP)
256    o pkg/thsice:
257     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
258      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
259    o pkg/obcs:
260     - bug fix for balance code
261    o pkg/seaice:
262      - allow values of SEAICE_elasticParm > 1
263      - add new parameter SEAICE_evpTauRelax as an alternative
264        to SEAICE_elasticParm
265      - make lsr boundary conditions free slip (by default), changes result
266      - add code for no slip boundary conditions for lsr
267      - set minimum of zeta to zero (and not 4e8) (changes results)
268      - add a cap on AREA after advecting AREA if seaice_growth is not called
269    o change calculation of Visbeck K:
270      - no longer depend on tapering scheme; instead, compute slope (limited
271        by GM_maxSlope). this is equivalent to what was comuted before with
272        clipping or linear tappering.
273      - fix vertical averaging (wrong by 1/2 level)
274      - leave the old version (but will not be maintained) within
275        #ifdef OLD_VISBECK_CALC / #endif
276      - update output of exp. ideal_2D_oce
277    o change error catch in calc_r_star to improve vectorization
278    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
279      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
280    o adjoint:
281      Re-organized adjoint checkpointing according to Matt Mazloff
282      (but with modifs/completions/cleanups)
283      Storing is now bundled into large arrays to optimized I/O
284      (and second step in cleanup of the_main_loop)
285    
286    checkpoint59b
287    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
288      - export/import (between ocean & coupler) fields needed for ocean DIC.
289    o pkg/seaice:
290      - get rid of three more exchanges seaice_calc_viscosities (required
291        different loop boundaries in seaice_lsr and seaice_ocean_stress)
292      - bug fix in seaice_ocean_stress (update of lab_sea required)
293      - reduce loop boundaries to necessary minimum also in seaice_evp
294      - go back to the old way of computing deltaC/Z as the adjoint likes that
295        better
296    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
297      passive tracer to an Age Tracer) + update output.txt
298    o pkg/exf:
299      - implement A-grid / C-grid selection for wind-stress input files.
300      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
301      for now, in exf_bulk_largeyeager04.F only :
302      - change implementation for case where windspeed + 2. components wind-stress
303        are read-in. AND use rhoConstFresh to convert evap.
304    o pkg/seaice:
305      - use correct EXCH_UV for wind-forcing (on A-grid).
306      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
307        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
308    o pkg/exf:
309      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
310      EXF_INTERPOLATION:
311      - merge global_with_exf/code version of exf_interp_read.F
312        to the main code ;
313      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
314        reading the file ; Important: This options needs to be defined to recover
315        previous code.
316        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
317      - no longer loose real*8 precision along the way when using exf_iprec=64.
318    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
319      - change discretisation of evp-solver in order to avoid another exchange
320        (changes lab_sea) and clean up a little
321      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
322        help the adjoint (this also changes the results slightly)
323      - add a few "_d 0" where they had been missing in seaice_evp.F
324      - cleaning up: remove unused seaice_calc_rhs.F
325    o pkg/exf: some cleaning-up:
326      - change various "constants" into runtime parameters
327      - cleaned-up Large&Yeager04 routine which should eventually
328        replace exf_bulkformulae.F (changed names of S/R and CPP)
329        and merged various ALLOW_ATM_WIND options
330     only used with thsice pkg (in thsice_get_exf.F):
331      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
332        which are used when useStabilityFct_overIce=TRUE (= the default)
333      - change default values of ice & snow emissivity and scale downward LW
334        by ice & snow emissivity.
335    o pkg/thsice:
336     fix few little problems, in thsice_calc_thickn.F:
337      - growth vertically (and not laterally) if iceFrac == iceMaskMax
338      - melt only laterally if hIce < hThinIce (as the comments say)
339      and in thsice_extend.F:
340      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
341      - start to form ice as soon as the minimum ice-volume is reachable.
342     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
343      and cpl_aim+ocn
344    o pkg/kpp
345     - move computation of surface related input fields to KPP into a new
346       subroutine kpp_forcing_surf.F
347     - remove wrong (within bi,bj loops) EXCH calls.
348     - little cleaning (add argument myThid in last position, cvs header ...)
349     - for now, fix conservation problem by exchanging KPPviscAz (may not
350       be the best fix)
351    o pkg/seaice
352     - check for inconsistent evp parameter/cpp-flag combination
353     - remove leftover errIO flat for obsolete name list error handling
354    o OpenAD
355     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
356    
357    checkpoint59a
358    o pkg/seaice: some parameter clarifications and a little bit of clean up
359    o pkg/thsice: rename run-time parameters:
360       himin       -> hIceMin
361       himin0      -> hThinIce
362       hihig       -> hThickIce
363       i0          -> i0swFrac
364       transCoef   -> bMeltCoef
365       frac_energy -> fracMelting
366      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
367       with default values (for now) that do not change the results.
368      remove old version of thsice vars advection in pkg/seaice.
369    o in FFIELDS.h:
370      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
371      - make pLoad & sIceLoad always available (but still only used if
372         ATMOSPHERIC_LOADING is #define).
373    o pkg/kpp: replaced _KPP_RL with _RL
374    o bug fixes for vertical diffusivity computations when both KPP and
375        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
376        are no longer updating the vertical diffusivity array
377        (passed as argument) but are (re-) setting those arrays.
378    o pkg/seaice: fix bug in evp solver, while doing that
379      - change (improve?) discretization of stress computations for both
380        cgrid-lsr and evp solver
381      - add a new routine to compute strain rates
382      - the above changes lab_sea results
383      - add no slip conditions for evp solver (off by default), lsr-version
384        may follow
385      - fix exchange for shear at Z-points (does not change lab_sea)
386      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
387        (to force the user to pick a time step since there is not "safe" way
388        of choosing it)
389      - add principal stress diagnostics
390      - rearrange fields for evp a little to avoid having to call a: too many
391        exchanges and b: exchanges for stress trensor components which we do
392        not have.
393      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
394        of evp, complete rewrite for lsr case (latter is does not yet work
395        in all cases)
396    o pkg/kpp: add code to have mixing in shelf ice caverns
397      - add myThid to all kpp routines (long overdue)
398    
399    checkpoint59
400    o pkg/exf:
401      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
402        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
403      - move exf header files from lower_case.h to UPPER_CASE.h ;
404        add missing cvs Header & Name
405      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
406      - add namelist param. selectStressGridPosition, exf_monFreq
407      - retire many _CLIM routines, and remove data.exf_clim
408        + params moved to data.exf
409        + climsst, climsss now handled by exf_set_gen, i.e.
410          climss?period=0 refers to constant field,
411          climss?period=-12 to monthly forcing
412      - split up namelists in data.exf
413    o pkg/seaice:
414      - remove seaice_exch and seaice_exch_uv
415      - remove superfluous exchange of theta
416      - add myThid to seaice_budget_ocean/ice
417      - add new interface for atmospheric wind forcing (C-grid only)
418        + new routine
419        + two new field (taux, tauy for stress over ice)
420        + removed one global field (DAIRN) for C-grid case only
421    o pkg/thsise
422      - 2nd set of modifs for thsice adjoint in conjunction with exf
423    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
424    
425    checkpoint58y_post
426    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
427      vertical diffusivity, similar to that in MOM4; turned on using
428      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
429      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
430    o Added capability for 3D specification of background vertical diffusion
431      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
432      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
433      "data" file that contains the 3D vertical diffusivity coefficients.
434    o ice dynamics (pkg/seaice) with thsice thermodynamics:
435      - add code within pkg thsice to advect & diffuse sea-ice fields
436      similar to (and will replace) what has been added in  seaice_advdiff.F,
437      but: - conserving Mass, Heat & Salt.
438           - better when using non-linear advection scheme (not yet fully tested)
439           - can also be used in atmospheric set-up (for now, only the diffusion).
440    
441    checkpoint58x_post
442    o IO option for global-file compact format:
443      - add options when generating topology (utils/exch2/matlab-topology-generator)
444      - add I/O capability (pkg/mdsio).
445      - adapt utils/matlab/rdmds.m to read this format.
446      for now long-line format not yet supported by pkg/mdsio (& exch2).
447    o shelfice: add a few diagnostics
448    
449    checkpoint58w_post
450    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
451      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
452      (and replace horiVertRatio in NH code).
453      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
454                         and tutorial_plume_on_slope (sensitive to truncation)
455    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
456      directly to drive seaice model (C-grid only)
457    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
458     - reintroduce computation of wind from stress,
459     - compute tau (in exf_bulkformulae.F) from windstress averaged to
460       mass points to avoid tau = 0
461     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
462    o rdmnc.m: make it work with "global" files created with gluemnc
463    o rdmnc.m : some improvements in dealing with singleton dimension
464      (tested on all testreport mnc output files).
465    o genmake2: disable pkg/profiles if netcdf test fails.
466    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
467    o move call to cal_readparms up to make calendar parameters/variable available
468      to all packages
469    
470    checkpoint58v_post
471    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
472      useDynP_inEos_Zc tested.
473    o pkg/exf: changes to properly interpolate/mask/scale initial fields
474    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
475      and portions thereof.  See read_cs.txt for description and examples.
476    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
477      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
478      following the great-circle arc between those 2 points.
479    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
480      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
481    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
482     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
483     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
484     - still needs work (not working with some options ; efficiency to improve)
485       and serious testing.
486     - use this scheme for temperature & salinity in 2 advection test exp.:
487       advect_xy & advect_xz, respectively.
488    
489    checkpoint58u_post
490    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
491    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
492    o testreport: add option "-skipdir" to skip some test.
493    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
494      momentum calculation.
495    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
496    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
497      remove checkpoint.F and the_correction_step.F (no longer used);
498      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
499    o add option (linFSConserveTr) to correct for tracer source/sink due to
500      Linear Free surface
501    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
502    o pkg/thsice: fix reading mnc-pickups
503    
504    checkpoint58t_post
505    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
506    o pkg/mdsio:
507     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
508       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
509       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
510     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
511     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
512       either MDS_READ_FIELD or MDS_WRITE_FIELD )
513     - new S/R (to replace MDSWRITEMETA), which allows to write more
514       informations (variable names, time ...) to meta files.
515     - modify rdmds.m to give back the meta file content.
516    o pkg/diagnostics: change vertical interpolation to be safer, and more
517       flexible (define p-levels to interpolate to in data.diagnostics);
518      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
519       diagnostic pointer.
520    o pkg/seaice: more cleaning up of seaice_growth, added many comments
521    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
522    o fix multi-category seaice:
523     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
524       SEAICE_MULTICATEGORY
525     - fix short wave heat flux
526    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
527       and allow to use EVP solver. Change forward lab_sea: test both EVP
528       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
529    o Initial check-in of lab_sea adjoint
530      (very similar to natl_box_adjoint/code_seaice)
531      * used C-grid and EVP solver
532      * used KPP, GM/Redi
533      * uses inAdExact=.TRUE.
534      * gradient checks fail for both ADM and TLM
535        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
536        f.d. gradients actually seem more problematic than ADM, TLM gradients;
537        issue is related to forward mismatch between g77 an ifort
538    o pkg/seaice: overhaul of thermodynamics
539     - growth.F and groatb.F are replaced by new routine seaice_growth.F
540     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
541     - move a few global fields out of SEAICE.h into seaice_growth.F and
542       make them 2D (FICE/QNETO/ ...)
543     - remove FO (it is the same as QNETO)
544     - introduce a few local fields to avoid modifying external fields such
545       as atemp, etc.
546    
547    checkpoint58s_post
548    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
549      changed exf_set_gen.F so that
550        genperiod=0 means input file is one time-constant field and
551        genperiod=-12 means input file contains 12 monthly means
552    o CG2D: use pre-computed solver main-diagonal (stored in common block);
553      this affects truncation error ; generate new output file for exp. which
554      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
555        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
556        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
557        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
558        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
559        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
560    o start implementation of deep-atmosphere and anelastic formulation
561    o verification: remove 2nd copy of input files and use script "prepare_run"
562      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
563    o mom_common/vecinv/fluxform: fix a few initialisation isssues
564    o profiles: fix for multithreaded case
565    
566    o diagnostics: rename few diags:
567      s/'PRESSURE'/'RCENTER '/g
568      s/'TICE    '/'oceFreez'/g
569      s/'TAUX    '/'oceTAUX '/g
570      s/'TAUY    '/'oceTAUY '/g
571      s/'SWFLUX  '/'oceQsw  '/g
572      s/DIFx/DFxE/g
573      s/DIFy/DFyE/g
574      and add few ocean-forcing diagnostics:
575      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
576    o modifications to pkg/seaice/growth.F and budget.F, which change results of
577      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
578      as actual snow thickness.  It now refers everywhere to effective snow
579      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
580    
581    checkpoint58r_post
582    o modifications to pkg/seaice/growth.F, which change results of
583      lab_sea experiment: fixes pertain to melting snow over open water, to
584      masking EVAP under sea ice, and to using the correct AREA variable for
585      computations of EVAP, PRECIP, HSNOW, and GHEFF
586    o add ability to read bathy, salt, and theta using MNC (off by def)
587    o add flooding algorithm and advection of HSNOW for pkg/seaice;
588      both are turned off by default and do no change any results
589    o seaice advection with pkg/thsice: a step toward the use of non-linear
590      advection scheme, but #ifdef or commented out for now (requires more EXCH).
591    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
592      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
593      in natl_box (affects results @ truncation level: update output.txt)
594    o multi-threading and IO:
595      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
596      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
597        (needed to work with SingleCpuIO): tested in all verif. exp.
598    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
599      affects the results (but none of the verification test uses this scheme).
600    o Adding some pkg/diagnostics capability to pkg/seaice
601      (will certainly be subject to changes)
602    o ctrl: adding new control variables:
603      lwflux, lwdown, evap, snowprecip, apressure, runoff
604    
605    checkpoint58q_post
606    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
607      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
608      high_res_cube configuration by 4% on Columbia.
609    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
610      add (in global_with_exf/code) a version of EXF_INTERP_READ without
611      dynamical allocation (seems to work in multi-threaded).
612    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
613      single CPU io) so that TAF does not have to see EESUPPORT.h
614    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
615    
616    checkpoint58p_post
617    o obcs: stop if obcs is used with useCDscheme = .true.
618    o shelfice:
619     - fix a sign error so that no slip at shelfice interface works
620     - remove stop for combination non-hydrostatic code and shelfice. That does
621       not mean, that the results are correct, but at least they are numerically
622       stable
623    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
624    o added adjoint exch routined for all exch*3d* routines
625      and updated flow directives
626    
627    checkpoint58o_post
628    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
629      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
630    o change controling S/R for writing pickup file (new S/R do_write_pickup)
631      and clean-up reading/writing of pickup files.
632    o fix local version of read/write pickup (NH part) in rotating_tank/code
633    o simplify EXCH interface:
634     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
635     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
636    o added the regrid package
637    o shelfice:
638     - add a simple boundary layer scheme to reduce noise
639     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
640    
641    checkpoint58n_post
642    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
643       local variable (not in common block).
644    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
645      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
646      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
647        to work with SingleCpuIO.
648    o add "_d 0" to real constant of pkg/cfc subroutines ;
649       update exp. cfc_exemple & tutorial_cfc_offline output files.
650    o multi-threading and IO:
651      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
652        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
653      - barrier before and after reading.
654      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
655      - avoid using MDS_WRITELOCAL for LAND pkg output.
656      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
657        common-block variables ; Allows multi-threading with master-thread IO.
658    o change default MAX_NO_THREADS from 32 to 4 ;
659      and stop cleanly when MAX_NO_THREADS is too small.
660    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
661    
662    checkpoint58m_post
663    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
664       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
665    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
666       keep global_ocean.90x40x15 (for AD testing) with former secondary test
667       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
668    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
669        add MITgcm_tutorials (= code + all the tutorials)
670    o ecco, option to compute cost for total ssh (mean+anom)
671    o consistent with addition of ptracer and ssh in pkg/profiles
672    o profiles: adding ptracer and ssh
673    o testreport: change multi-test output-file name
674      (from output.txt.{name} to output.{name}.txt)
675    o profiles: now ok for mutli-tiles case
676    o seaice: add 4 parameters for different advection schemes for area,
677      (effective) seaice thickness, enthalphy, and snow height. Their default
678      is the standard parameter SEAICEadvScheme
679    o calc_gw:
680     - add cosFacU in zonal viscous flux (harmonic.visc.).
681     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
682       of tutorial_plume_on_slope.
683    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
684    o calc_gw: true flux-form, account for horizontal grid spacing.
685      update rotating_tank results, but not plume_on_slope (affected at
686      truncation level, 11 digits).
687    
688    checkpoint58l_post
689    o calc_gw:
690     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
691     - remove side-drag for now (need to fix it); update plume_on_slope results.
692     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
693    o commit code to make SST/SSS weights spatially variable
694      (based on either variable in-situ or variable initial T/S weights)
695    o pkg/ecco:
696      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
697        now based on horizontally varying weights wthetaLev, wsaltLev
698      * cost_averagesflags now returns year indices in addition to day, month
699      * sflux balance is performed on annual basis
700        (sflxumm, sfluxmm2, bal_sfluxmm)
701      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
702        including separate counting and multipliers
703    o pkg/rbcs
704      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
705    
706    checkpoint58k_post
707    o testreport:
708     - always build in dir. "build" (if not there, mkdir build instead of building
709       & running in input)
710     - run in dir run (if it exists), in build otherwise.
711     - call prepare_run (if input/prepare_run exists)
712     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
713    o pkg/exf modifications to interpolation and rotation routines for more
714       reasonable treatment of North Pole singularity: for tracers North Pole
715       value is set to northernmost zonal-mean value, for zonal velocity it is
716       set to zero, and for meridional velocity it is set to northernmost value.
717    o pkg/exf/exf_check_range.F
718     - add tile index to diagnostics and move stop statement to the very
719       end of the routine.
720    o pkg/diagnostics: (diagnostics_main_init.F)
721      define title of isomorphic variables according to the current config.
722    o pkg/thsice with pkg/seaice dynamics:
723    - fix domain of computation (interior only, required for exf) and do exchanges
724    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
725    o towards a standard way of dealing with multi-threading in MONITOR
726      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
727    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
728       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
729    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
730    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
731    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
732       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
733    o tracer advection:
734     - clean-up and simplify calc_common_factors.F
735     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
736       advection subroutine (but still not used within DST advection S/R)
737    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
738    
739    checkpoint58j_post
740    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
741      from file (collects calls previously in FORWARD_STEP)
742    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
743    o adjoint store dir. adjusted accordingly
744    o genmake2
745      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
746    
747    checkpoint58i_post
748    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
749      on wind stress (SEAICEstressFactor defaults to 1.)
750    o Total number of Timers is finite (<=40): comment out 2 non-essential one
751      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
752    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
753      on CS-grid: no longer loosing mass.
754    o exf & curvilinear-grid: no longer modify longitude xC & xG.
755  o pkg/ggl90: fix sloppy output and fix a bug  o pkg/ggl90: fix sloppy output and fix a bug
756    o pkg/seaice: added SEAICEuseEVPpickup parameter
757      - Set to false in order to start EVP solver with
758        non-EVP pickup files when using SEAICEuseEVP
759      - fix sign error in diffusion in seaice_calc_rhs
760    
761  checkpoint58h_post  checkpoint58h_post
762  * Modifications for bottom topography control  * Modifications for bottom topography control

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