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revision 1.689 by jmc, Mon Jun 26 00:16:54 2006 UTC revision 1.927 by dimitri, Tue Dec 18 05:34:41 2007 UTC
# Line 4  $Name$ Line 4  $Name$
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    checkpoint59l
8    o pkg/salt_plume: added various options for salt plume depth
9      criterion and for vertical distribution of the salt
10    o pkg/ptracers: new version of ptracers pickup:
11      read meta file and write only fields which are needed to restart.
12      ( same logic as main pickup file ; also using pickupStrictlyMatch )
13    o pkg/seaice:
14      - add timescale for melting due to warm mixed layer as a means of
15        setting SEAICE_availHeatFrac more conveniently
16      - add a CPP-flag/runtime parameter check for flooding algorithm
17      - reformulated availHeat in seaice_growth.F to be independent of AREA
18    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
19      unit changes
20    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
21    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
22      SX vector computer.
23    o pkg/seaice:
24      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
25        seaice forcing fields can now be read only through pkg/exf
26      - removed some unused halos
27    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
28    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
29      or U/VICE from U/VWIND before computing U/VSTRESS
30    
31    checkpoint59k
32    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
33      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
34    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
35      all experiments pass when compile with un-initialised var. checking option.
36    o added pkg/salt_plume
37    o script to test restart (for now, in MITgcm_contrib/jmc_script)
38    o pkg/seaice: new read/write pickup version.
39      read meta file and write only fields which are needed to restart.
40      ( same logic as main pickup file ; also using pickupStrictlyMatch )
41    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
42    o lab_sea.hb87: modify the domain & update output.hb87.txt :
43      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
44      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
45      process. Fixed here by closing the domain at the Northern boundary.
46    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
47    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
48      a set of consecutive levels in/from a 3-D array.
49    o pkg/ptracers:
50      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
51      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
52    
53    checkpoint59j
54    o in pkgs: dic, obcs, offline, rbcs:
55      standard way to compute coeff. for time interpolation between 2 time reccords
56      which retains full precision (& make results less dependent on compiler).
57      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
58    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
59      packages instead of reading ice cover and wind speed separately
60    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
61     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
62      to allow to compile customized code before the update)
63    o cleaning-up:
64      - fix CPP instruction syntax in pkg/obcs
65      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
66        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
67      - fix some threads issue in IO parts.
68    o pkg/dic:
69      - add tons of "_d 0" (--> much better testreports !)
70       and then update outputs of tutorial_global_oce_biogeo
71    o pkg/mom_fluxform:
72      add a special version of momentum advection intended to conserve momentum
73      next to a bathymetry step or a coastline edge. (default = off = #undef)
74    o new read/write pickup version:
75      - for now, only implemented for main (mdsio) pickup file.
76      - write out only what is needed to restart; merge pickup_nh , pickup_ph
77        and main pickup together.
78      - read meta file; read only what is needed to restart; stop if a field
79        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
80        if it make sense (even if the restart is not perfect).
81      - if no meta file, assume that pickup to read corresponds exactly to
82        a pickup that would currently be written.
83      - read pickup written in the old format (until checkpoint59i) if it
84        recognizes an old meta file (no field-list).
85      - add a meta file in exp. which starts from a pickup: 2 cases:
86        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
87         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
88        b) a meta file describing the content of the associated pickup file
89         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
90    o pkg/mdsio & pkg/rw:
91      - new routine to read a meta file ; new set of routine to read
92        Multiple-fields file (with meta file).
93    o added open boundary conditions capability for seaice
94        HSNOW, HSALT, UICE, and VICE
95    
96    checkpoint59i
97    o adjoint:
98      * fix multiDimAdvection adjoint
99        (partial recomputation problem by TAF for fVerT(:,:,kDown)
100        and comlev1 size definition (maxpass vs. max. number of tracers)
101      * verification/global_ocean.90x45x15 adjoint now tests
102        NLFS and multiDimAdvection using DST3 (=30)
103      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
104    o pkg/kpp: add "_d 0" to real constant (if missing);
105      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
106      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
107    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
108      for internal parameters related to restart process (formerly from PARAMS.h)
109      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
110    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
111      as argument. (only atm2d & obcs write_pickup have not yet been updated)
112    o pkg/monitor:
113      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
114      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
115      - account for deep Atmosphere factor and density factor (anelastic)
116    o added open boundary conditions capability for seaice HEFF and AREA
117    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
118      thermodynamics
119      - requires a little reorganization, which affects the testreport results
120        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
121        so that now the conservative form is tested
122      - add a few comments
123    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
124    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
125    o add new diagnostics to seaice: advective, diffusive fluxes (only for
126      multidim-advection, for scheme 2 they are not filled) and transports,
127      thermodynamic growth rates
128    o change units of EmPmR (inside the code, + within coupling interface)
129      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
130      Affects results @ truncation level (cg2d match) and update output of
131       experiments: lab_sea(6), global_ocean.90x40x15(10),
132      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
133      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
134      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
135      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
136    
137    checkpoint59h
138    o pkg/exf:
139      - improve vectorization by moving if-statement out of loops in
140        exf_mapfields, exf_radiation
141      - exf_bulkformulae.F: introduce 2D fields and vectorize code
142    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
143    o testreport:
144      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
145        monitor & update offline_exf_seaice exp. output.
146      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
147    o pkg/seaice:
148      - bug fix in the evp solver: boundary conditions were affected be
149        masking of zMax/zMin (changes results)
150      - minor bug fix in boundary conditions in seaice_calc_strainrates
151        (changes results for no_slip)
152      - seaice_lsr.F: make interpolation of eta dependent on boundaries
153      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
154      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
155        stress formulation and no-slip boundary conditions
156    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
157      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
158    o pkg/seaice: a first HSALT time stepping equation has been checked in
159    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
160      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
161      without requiring DO-IF statements
162    o pkg/thsice:
163      use continuous power-law function for partition of energy between lateral
164      melting/freezing and thinning/thickening ; old code using step function
165      still available with #undef THSICE_FRACEN_POWERLAW
166      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
167    o testreport: change AD testing : check against results/output_adm.txt
168      using same scripts as for forward test.
169    
170    checkpoint59g
171    o adjoint testing: in preparation for changing testreport:
172      - output format: cost and grad written on separated lines
173      - ad output results in directory "results" (instead of "results_ad")
174    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
175    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
176    o pkg/ecco: allow user defined cost function contributions
177    o testreport:
178      Allow to choose (per experiment) the list of tested output variables
179       and the main variable (used to issue a pass/FAIL ) ;
180      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
181      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
182      Also modify printing of summary:
183       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
184       b) echo the list of tested variables in the individual summary.txt of
185          each experiment.
186    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
187      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
188      (but still depend on the tile decompostion of the domain).
189    o pkg/seaice: change a discretization detail to make the B-grid code
190      "more symmetric". This change is likely to remove all "ridges/leads" that
191      where quasi-aligned with the grid in B-grid solutions. It may also be
192      the solution to the stress coupling issues with the B-grid.
193    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
194      remove .cvsignore from input dir. (since testreport no longer run here).
195    o pkg/thsice:
196     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
197     - fix reshaping of sea-ice just after advection:
198       melt all the ice only if ice-volume is too small.
199     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
200       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
201     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
202    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
203      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
204    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
205      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
206      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
207      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
208      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
209      -> update output.txt
210    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
211     this affects truncation error: -> update output.txt of exp:
212      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
213      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
214    
215    checkpoint59f
216    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
217    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
218      a bounded range (in forward mode)
219    o pkg/ecco, ctrl, autodiff and mom_common:
220     internal parameter controls, completements of implementations
221    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
222    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
223      (not seem any difference in testing results).
224    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
225       at face corners.
226    o pkg/generic_advdiff:
227     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
228      loop range indices for computing vertical advection tendency
229      and do the calculation in the interior only (no overlap) ;
230      for now, only implemented for SOM advection (to save CPU time).
231     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
232    o exch2 adjoint
233      First set of changes:
234      - add exch2 hand-written adjoint templates
235      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
236        This will require cleanup in pkg/autodiff/*.F
237        (changed routines currently kept separate in verif. code/)
238      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
239        that used to hide exch2 or cubed-sphere specific code
240        (commented via 'cph-exch2')
241    o pkg/seaice
242      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
243    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
244       output of global_ocean.cs32x15.thsice .
245    
246    checkpoint59e
247    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
248      for B-grid vector (not yet tested) and C-grid vector (<- only used
249      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
250    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
251      (#ifdef ALLOW_SALT_PLUME)
252    o gather_2d/scatter_2d: removed halo regions
253    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
254      scheme and the corresponding test case (under front_relax dir). For now,
255      only available with Skew-flux form and not yet tested in realistic set-up.
256      adjoint: store directives updated, but gradient checks deteriorated,
257      so maybe GM/Redi adjoint is now broken.
258    o seaice adjoint
259      * add AREA, HEFF, HSNOW as control variable
260        (should not change lab_sea results)
261      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
262    o pkg/seaice:
263      * added computation of saltFlux in seaice_growth;
264        For time being, sea ice salinity is assumed constant
265        contribution of snow flooding to freshening of sea ice is neglected.
266        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
267        defaults to 0.0 in order to maintain backward compatibility.
268        Typical values for SEAICE_salinity are 4 to 10 g/kg.
269      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
270      * added SEAICE_availHeatFrac, which specifies fraction of surface level
271        heat content used to melt or grow ice
272      * commented out cap of HICE: it helps keep ice thinner
273      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
274      * applied OBCS T/S mask to HEFFM sea ice mask
275    
276    checkpoint59d
277    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
278     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
279     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
280    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
281     and change default value of parameter "GM_Small_Number";
282     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
283       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
284       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
285    o pkg/ecco: cost function when applying pkg/smooth to controls
286    o pkg/ctrl: add forcingPrecond run time parameter
287    o pkg/seaice:
288     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
289     - fix bug in metric terms of u-equation in LSR solver (implicit part),
290       changes verification/lab_sea
291     - rearrange implicit part of u-equation in LSR solver to make it easier to
292       read, understand, and debug. This causes changes at the truncation level.
293     - fix (serious) bug in the boundary conditions (sign error in the implicit
294       part) of the LSR solver. Changes all LSR results.
295     - fixed problem with HSNOW initialization to avoid thick snow when AREA
296       is initilized with small values - does not change lab_sea results.
297     - added HsnowFile initialization capability
298    o pkg/smooth: addition to model/src and pkg/ctrl so allow
299     initialization of pkg/smooth and application to control vector
300    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
301    o dependencies: pkg/profiles requires pkg/cal
302    o pkg/profiles:
303     - added option ALLOW_PROFILES_GENERICGRID
304         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
305         that interpolation information (grid points and coefficients) is provided
306         within the netcdf input files.
307         -> sample matlab scripts can be found in MITgcm_contrib/gael
308         that allow you to prepare netcdf input files.
309     - also modified: cleaner include statements, cleaner error print statements,
310       cleaner stops when error, and more tests of the netcdf input files consistency.
311    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
312    o pkg/seaice:
313     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
314       requires a new routine: seaice_diagnostics_fill.F
315     - make sure that seaice does not move if not forced (pressure replacement
316       method, Hibler and Ip, 1995), changes results
317     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
318     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
319       It is turned off by default (=-1.), because it changes the results.
320     - make it possible to read AREA from a file, too.
321    
322    checkpoint59c
323    o add S/R and diagnostics for oceanic mixed-layer depth
324    o move GMRedi call after all vertical mixing schemes (including KPP)
325    o pkg/thsice:
326     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
327      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
328    o pkg/obcs:
329     - bug fix for balance code
330    o pkg/seaice:
331      - allow values of SEAICE_elasticParm > 1
332      - add new parameter SEAICE_evpTauRelax as an alternative
333        to SEAICE_elasticParm
334      - make lsr boundary conditions free slip (by default), changes result
335      - add code for no slip boundary conditions for lsr
336      - set minimum of zeta to zero (and not 4e8) (changes results)
337      - add a cap on AREA after advecting AREA if seaice_growth is not called
338    o change calculation of Visbeck K:
339      - no longer depend on tapering scheme; instead, compute slope (limited
340        by GM_maxSlope). this is equivalent to what was comuted before with
341        clipping or linear tappering.
342      - fix vertical averaging (wrong by 1/2 level)
343      - leave the old version (but will not be maintained) within
344        #ifdef OLD_VISBECK_CALC / #endif
345      - update output of exp. ideal_2D_oce
346    o change error catch in calc_r_star to improve vectorization
347    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
348      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
349    o adjoint:
350      Re-organized adjoint checkpointing according to Matt Mazloff
351      (but with modifs/completions/cleanups)
352      Storing is now bundled into large arrays to optimized I/O
353      (and second step in cleanup of the_main_loop)
354    
355    checkpoint59b
356    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
357      - export/import (between ocean & coupler) fields needed for ocean DIC.
358    o pkg/seaice:
359      - get rid of three more exchanges seaice_calc_viscosities (required
360        different loop boundaries in seaice_lsr and seaice_ocean_stress)
361      - bug fix in seaice_ocean_stress (update of lab_sea required)
362      - reduce loop boundaries to necessary minimum also in seaice_evp
363      - go back to the old way of computing deltaC/Z as the adjoint likes that
364        better
365    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
366      passive tracer to an Age Tracer) + update output.txt
367    o pkg/exf:
368      - implement A-grid / C-grid selection for wind-stress input files.
369      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
370      for now, in exf_bulk_largeyeager04.F only :
371      - change implementation for case where windspeed + 2. components wind-stress
372        are read-in. AND use rhoConstFresh to convert evap.
373    o pkg/seaice:
374      - use correct EXCH_UV for wind-forcing (on A-grid).
375      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
376        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
377    o pkg/exf:
378      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
379      EXF_INTERPOLATION:
380      - merge global_with_exf/code version of exf_interp_read.F
381        to the main code ;
382      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
383        reading the file ; Important: This options needs to be defined to recover
384        previous code.
385        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
386      - no longer loose real*8 precision along the way when using exf_iprec=64.
387    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
388      - change discretisation of evp-solver in order to avoid another exchange
389        (changes lab_sea) and clean up a little
390      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
391        help the adjoint (this also changes the results slightly)
392      - add a few "_d 0" where they had been missing in seaice_evp.F
393      - cleaning up: remove unused seaice_calc_rhs.F
394    o pkg/exf: some cleaning-up:
395      - change various "constants" into runtime parameters
396      - cleaned-up Large&Yeager04 routine which should eventually
397        replace exf_bulkformulae.F (changed names of S/R and CPP)
398        and merged various ALLOW_ATM_WIND options
399     only used with thsice pkg (in thsice_get_exf.F):
400      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
401        which are used when useStabilityFct_overIce=TRUE (= the default)
402      - change default values of ice & snow emissivity and scale downward LW
403        by ice & snow emissivity.
404    o pkg/thsice:
405     fix few little problems, in thsice_calc_thickn.F:
406      - growth vertically (and not laterally) if iceFrac == iceMaskMax
407      - melt only laterally if hIce < hThinIce (as the comments say)
408      and in thsice_extend.F:
409      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
410      - start to form ice as soon as the minimum ice-volume is reachable.
411     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
412      and cpl_aim+ocn
413    o pkg/kpp
414     - move computation of surface related input fields to KPP into a new
415       subroutine kpp_forcing_surf.F
416     - remove wrong (within bi,bj loops) EXCH calls.
417     - little cleaning (add argument myThid in last position, cvs header ...)
418     - for now, fix conservation problem by exchanging KPPviscAz (may not
419       be the best fix)
420    o pkg/seaice
421     - check for inconsistent evp parameter/cpp-flag combination
422     - remove leftover errIO flat for obsolete name list error handling
423    o OpenAD
424     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
425    
426    checkpoint59a
427    o pkg/seaice: some parameter clarifications and a little bit of clean up
428    o pkg/thsice: rename run-time parameters:
429       himin       -> hIceMin
430       himin0      -> hThinIce
431       hihig       -> hThickIce
432       i0          -> i0swFrac
433       transCoef   -> bMeltCoef
434       frac_energy -> fracMelting
435      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
436       with default values (for now) that do not change the results.
437      remove old version of thsice vars advection in pkg/seaice.
438    o in FFIELDS.h:
439      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
440      - make pLoad & sIceLoad always available (but still only used if
441         ATMOSPHERIC_LOADING is #define).
442    o pkg/kpp: replaced _KPP_RL with _RL
443    o bug fixes for vertical diffusivity computations when both KPP and
444        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
445        are no longer updating the vertical diffusivity array
446        (passed as argument) but are (re-) setting those arrays.
447    o pkg/seaice: fix bug in evp solver, while doing that
448      - change (improve?) discretization of stress computations for both
449        cgrid-lsr and evp solver
450      - add a new routine to compute strain rates
451      - the above changes lab_sea results
452      - add no slip conditions for evp solver (off by default), lsr-version
453        may follow
454      - fix exchange for shear at Z-points (does not change lab_sea)
455      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
456        (to force the user to pick a time step since there is not "safe" way
457        of choosing it)
458      - add principal stress diagnostics
459      - rearrange fields for evp a little to avoid having to call a: too many
460        exchanges and b: exchanges for stress trensor components which we do
461        not have.
462      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
463        of evp, complete rewrite for lsr case (latter is does not yet work
464        in all cases)
465    o pkg/kpp: add code to have mixing in shelf ice caverns
466      - add myThid to all kpp routines (long overdue)
467    
468    checkpoint59
469    o pkg/exf:
470      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
471        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
472      - move exf header files from lower_case.h to UPPER_CASE.h ;
473        add missing cvs Header & Name
474      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
475      - add namelist param. selectStressGridPosition, exf_monFreq
476      - retire many _CLIM routines, and remove data.exf_clim
477        + params moved to data.exf
478        + climsst, climsss now handled by exf_set_gen, i.e.
479          climss?period=0 refers to constant field,
480          climss?period=-12 to monthly forcing
481      - split up namelists in data.exf
482    o pkg/seaice:
483      - remove seaice_exch and seaice_exch_uv
484      - remove superfluous exchange of theta
485      - add myThid to seaice_budget_ocean/ice
486      - add new interface for atmospheric wind forcing (C-grid only)
487        + new routine
488        + two new field (taux, tauy for stress over ice)
489        + removed one global field (DAIRN) for C-grid case only
490    o pkg/thsise
491      - 2nd set of modifs for thsice adjoint in conjunction with exf
492    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
493    
494    checkpoint58y_post
495    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
496      vertical diffusivity, similar to that in MOM4; turned on using
497      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
498      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
499    o Added capability for 3D specification of background vertical diffusion
500      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
501      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
502      "data" file that contains the 3D vertical diffusivity coefficients.
503    o ice dynamics (pkg/seaice) with thsice thermodynamics:
504      - add code within pkg thsice to advect & diffuse sea-ice fields
505      similar to (and will replace) what has been added in  seaice_advdiff.F,
506      but: - conserving Mass, Heat & Salt.
507           - better when using non-linear advection scheme (not yet fully tested)
508           - can also be used in atmospheric set-up (for now, only the diffusion).
509    
510    checkpoint58x_post
511    o IO option for global-file compact format:
512      - add options when generating topology (utils/exch2/matlab-topology-generator)
513      - add I/O capability (pkg/mdsio).
514      - adapt utils/matlab/rdmds.m to read this format.
515      for now long-line format not yet supported by pkg/mdsio (& exch2).
516    o shelfice: add a few diagnostics
517    
518    checkpoint58w_post
519    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
520      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
521      (and replace horiVertRatio in NH code).
522      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
523                         and tutorial_plume_on_slope (sensitive to truncation)
524    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
525      directly to drive seaice model (C-grid only)
526    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
527     - reintroduce computation of wind from stress,
528     - compute tau (in exf_bulkformulae.F) from windstress averaged to
529       mass points to avoid tau = 0
530     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
531    o rdmnc.m: make it work with "global" files created with gluemnc
532    o rdmnc.m : some improvements in dealing with singleton dimension
533      (tested on all testreport mnc output files).
534    o genmake2: disable pkg/profiles if netcdf test fails.
535    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
536    o move call to cal_readparms up to make calendar parameters/variable available
537      to all packages
538    
539    checkpoint58v_post
540    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
541      useDynP_inEos_Zc tested.
542    o pkg/exf: changes to properly interpolate/mask/scale initial fields
543    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
544      and portions thereof.  See read_cs.txt for description and examples.
545    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
546      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
547      following the great-circle arc between those 2 points.
548    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
549      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
550    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
551     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
552     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
553     - still needs work (not working with some options ; efficiency to improve)
554       and serious testing.
555     - use this scheme for temperature & salinity in 2 advection test exp.:
556       advect_xy & advect_xz, respectively.
557    
558    checkpoint58u_post
559    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
560    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
561    o testreport: add option "-skipdir" to skip some test.
562    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
563      momentum calculation.
564    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
565    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
566      remove checkpoint.F and the_correction_step.F (no longer used);
567      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
568    o add option (linFSConserveTr) to correct for tracer source/sink due to
569      Linear Free surface
570    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
571    o pkg/thsice: fix reading mnc-pickups
572    
573    checkpoint58t_post
574    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
575    o pkg/mdsio:
576     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
577       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
578       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
579     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
580     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
581       either MDS_READ_FIELD or MDS_WRITE_FIELD )
582     - new S/R (to replace MDSWRITEMETA), which allows to write more
583       informations (variable names, time ...) to meta files.
584     - modify rdmds.m to give back the meta file content.
585    o pkg/diagnostics: change vertical interpolation to be safer, and more
586       flexible (define p-levels to interpolate to in data.diagnostics);
587      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
588       diagnostic pointer.
589    o pkg/seaice: more cleaning up of seaice_growth, added many comments
590    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
591    o fix multi-category seaice:
592     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
593       SEAICE_MULTICATEGORY
594     - fix short wave heat flux
595    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
596       and allow to use EVP solver. Change forward lab_sea: test both EVP
597       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
598    o Initial check-in of lab_sea adjoint
599      (very similar to natl_box_adjoint/code_seaice)
600      * used C-grid and EVP solver
601      * used KPP, GM/Redi
602      * uses inAdExact=.TRUE.
603      * gradient checks fail for both ADM and TLM
604        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
605        f.d. gradients actually seem more problematic than ADM, TLM gradients;
606        issue is related to forward mismatch between g77 an ifort
607    o pkg/seaice: overhaul of thermodynamics
608     - growth.F and groatb.F are replaced by new routine seaice_growth.F
609     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
610     - move a few global fields out of SEAICE.h into seaice_growth.F and
611       make them 2D (FICE/QNETO/ ...)
612     - remove FO (it is the same as QNETO)
613     - introduce a few local fields to avoid modifying external fields such
614       as atemp, etc.
615    
616    checkpoint58s_post
617    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
618      changed exf_set_gen.F so that
619        genperiod=0 means input file is one time-constant field and
620        genperiod=-12 means input file contains 12 monthly means
621    o CG2D: use pre-computed solver main-diagonal (stored in common block);
622      this affects truncation error ; generate new output file for exp. which
623      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
624        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
625        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
626        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
627        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
628        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
629    o start implementation of deep-atmosphere and anelastic formulation
630    o verification: remove 2nd copy of input files and use script "prepare_run"
631      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
632    o mom_common/vecinv/fluxform: fix a few initialisation isssues
633    o profiles: fix for multithreaded case
634    
635    o diagnostics: rename few diags:
636      s/'PRESSURE'/'RCENTER '/g
637      s/'TICE    '/'oceFreez'/g
638      s/'TAUX    '/'oceTAUX '/g
639      s/'TAUY    '/'oceTAUY '/g
640      s/'SWFLUX  '/'oceQsw  '/g
641      s/DIFx/DFxE/g
642      s/DIFy/DFyE/g
643      and add few ocean-forcing diagnostics:
644      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
645    o modifications to pkg/seaice/growth.F and budget.F, which change results of
646      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
647      as actual snow thickness.  It now refers everywhere to effective snow
648      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
649    
650    checkpoint58r_post
651    o modifications to pkg/seaice/growth.F, which change results of
652      lab_sea experiment: fixes pertain to melting snow over open water, to
653      masking EVAP under sea ice, and to using the correct AREA variable for
654      computations of EVAP, PRECIP, HSNOW, and GHEFF
655    o add ability to read bathy, salt, and theta using MNC (off by def)
656    o add flooding algorithm and advection of HSNOW for pkg/seaice;
657      both are turned off by default and do no change any results
658    o seaice advection with pkg/thsice: a step toward the use of non-linear
659      advection scheme, but #ifdef or commented out for now (requires more EXCH).
660    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
661      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
662      in natl_box (affects results @ truncation level: update output.txt)
663    o multi-threading and IO:
664      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
665      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
666        (needed to work with SingleCpuIO): tested in all verif. exp.
667    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
668      affects the results (but none of the verification test uses this scheme).
669    o Adding some pkg/diagnostics capability to pkg/seaice
670      (will certainly be subject to changes)
671    o ctrl: adding new control variables:
672      lwflux, lwdown, evap, snowprecip, apressure, runoff
673    
674    checkpoint58q_post
675    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
676      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
677      high_res_cube configuration by 4% on Columbia.
678    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
679      add (in global_with_exf/code) a version of EXF_INTERP_READ without
680      dynamical allocation (seems to work in multi-threaded).
681    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
682      single CPU io) so that TAF does not have to see EESUPPORT.h
683    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
684    
685    checkpoint58p_post
686    o obcs: stop if obcs is used with useCDscheme = .true.
687    o shelfice:
688     - fix a sign error so that no slip at shelfice interface works
689     - remove stop for combination non-hydrostatic code and shelfice. That does
690       not mean, that the results are correct, but at least they are numerically
691       stable
692    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
693    o added adjoint exch routined for all exch*3d* routines
694      and updated flow directives
695    
696    checkpoint58o_post
697    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
698      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
699    o change controling S/R for writing pickup file (new S/R do_write_pickup)
700      and clean-up reading/writing of pickup files.
701    o fix local version of read/write pickup (NH part) in rotating_tank/code
702    o simplify EXCH interface:
703     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
704     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
705    o added the regrid package
706    o shelfice:
707     - add a simple boundary layer scheme to reduce noise
708     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
709    
710    checkpoint58n_post
711    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
712       local variable (not in common block).
713    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
714      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
715      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
716        to work with SingleCpuIO.
717    o add "_d 0" to real constant of pkg/cfc subroutines ;
718       update exp. cfc_exemple & tutorial_cfc_offline output files.
719    o multi-threading and IO:
720      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
721        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
722      - barrier before and after reading.
723      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
724      - avoid using MDS_WRITELOCAL for LAND pkg output.
725      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
726        common-block variables ; Allows multi-threading with master-thread IO.
727    o change default MAX_NO_THREADS from 32 to 4 ;
728      and stop cleanly when MAX_NO_THREADS is too small.
729    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
730    
731    checkpoint58m_post
732    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
733       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
734    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
735       keep global_ocean.90x40x15 (for AD testing) with former secondary test
736       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
737    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
738        add MITgcm_tutorials (= code + all the tutorials)
739    o ecco, option to compute cost for total ssh (mean+anom)
740    o consistent with addition of ptracer and ssh in pkg/profiles
741    o profiles: adding ptracer and ssh
742    o testreport: change multi-test output-file name
743      (from output.txt.{name} to output.{name}.txt)
744    o profiles: now ok for mutli-tiles case
745    o seaice: add 4 parameters for different advection schemes for area,
746      (effective) seaice thickness, enthalphy, and snow height. Their default
747      is the standard parameter SEAICEadvScheme
748    o calc_gw:
749     - add cosFacU in zonal viscous flux (harmonic.visc.).
750     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
751       of tutorial_plume_on_slope.
752    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
753    o calc_gw: true flux-form, account for horizontal grid spacing.
754      update rotating_tank results, but not plume_on_slope (affected at
755      truncation level, 11 digits).
756    
757    checkpoint58l_post
758    o calc_gw:
759     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
760     - remove side-drag for now (need to fix it); update plume_on_slope results.
761     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
762    o commit code to make SST/SSS weights spatially variable
763      (based on either variable in-situ or variable initial T/S weights)
764    o pkg/ecco:
765      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
766        now based on horizontally varying weights wthetaLev, wsaltLev
767      * cost_averagesflags now returns year indices in addition to day, month
768      * sflux balance is performed on annual basis
769        (sflxumm, sfluxmm2, bal_sfluxmm)
770      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
771        including separate counting and multipliers
772    o pkg/rbcs
773      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
774    
775    checkpoint58k_post
776    o testreport:
777     - always build in dir. "build" (if not there, mkdir build instead of building
778       & running in input)
779     - run in dir run (if it exists), in build otherwise.
780     - call prepare_run (if input/prepare_run exists)
781     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
782    o pkg/exf modifications to interpolation and rotation routines for more
783       reasonable treatment of North Pole singularity: for tracers North Pole
784       value is set to northernmost zonal-mean value, for zonal velocity it is
785       set to zero, and for meridional velocity it is set to northernmost value.
786    o pkg/exf/exf_check_range.F
787     - add tile index to diagnostics and move stop statement to the very
788       end of the routine.
789  o pkg/diagnostics: (diagnostics_main_init.F)  o pkg/diagnostics: (diagnostics_main_init.F)
790    define title of isomorphic variables according to the current config.    define title of isomorphic variables according to the current config.
791  o pkg/thsice with pkg/seaice dynamics:  o pkg/thsice with pkg/seaice dynamics:

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