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revision 1.637 by mlosch, Tue Mar 21 13:00:33 2006 UTC revision 1.873 by jmc, Mon Sep 17 03:47:07 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 adjoint testing: in preparation for changing testreport:
8      - output format: cost and grad written on separated lines
9      - ad output results in directory "results" (instead of "results_ad")
10    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
11    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
12    o pkg/ecco: allow user defined cost function contributions
13    o testreport:
14      Allow to choose (per experiment) the list of tested output variables
15       and the main variable (used to issue a pass/FAIL ) ;
16      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
17      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
18      Also modify printing of summary:
19       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
20       b) echo the list of tested variables in the individual summary.txt of
21          each experiment.
22    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
23      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
24      (but still depend on the tile decompostion of the domain).
25    o pkg/seaice: change a discretization detail to make the B-grid code
26      "more symmetric". This change is likely to remove all "ridges/leads" that
27      where quasi-aligned with the grid in B-grid solutions. It may also be
28      the solution to the stress coupling issues with the B-grid.
29    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
30      remove .cvsignore from input dir. (since testreport no longer run here).
31    o pkg/thsice:
32     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
33     - fix reshaping of sea-ice just after advection:
34       melt all the ice only if ice-volume is too small.
35     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
36       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
37     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
38    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
39      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
40    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
41      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
42      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
43      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
44      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
45      -> update output.txt
46    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
47     this affects truncation error: -> update output.txt of exp:
48      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
49      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
50    
51    checkpoint59f
52    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
53    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
54      a bounded range (in forward mode)
55    o pkg/ecco, ctrl, autodiff and mom_common:
56     internal parameter controls, completements of implementations
57    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
58    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
59      (not seem any difference in testing results).
60    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
61       at face corners.
62    o pkg/generic_advdiff:
63     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
64      loop range indices for computing vertical advection tendency
65      and do the calculation in the interior only (no overlap) ;
66      for now, only implemented for SOM advection (to save CPU time).
67     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
68    o exch2 adjoint
69      First set of changes:
70      - add exch2 hand-written adjoint templates
71      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
72        This will require cleanup in pkg/autodiff/*.F
73        (changed routines currently kept separate in verif. code/)
74      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
75        that used to hide exch2 or cubed-sphere specific code
76        (commented via 'cph-exch2')
77    o pkg/seaice
78      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
79    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
80       output of global_ocean.cs32x15.thsice .
81    
82    checkpoint59e
83    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
84      for B-grid vector (not yet tested) and C-grid vector (<- only used
85      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
86    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
87      (#ifdef ALLOW_SALT_PLUME)
88    o gather_2d/scatter_2d: removed halo regions
89    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
90      scheme and the corresponding test case (under front_relax dir). For now,
91      only available with Skew-flux form and not yet tested in realistic set-up.
92      adjoint: store directives updated, but gradient checks deteriorated,
93      so maybe GM/Redi adjoint is now broken.
94    o seaice adjoint
95      * add AREA, HEFF, HSNOW as control variable
96        (should not change lab_sea results)
97      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
98    o pkg/seaice:
99      * added computation of saltFlux in seaice_growth;
100        For time being, sea ice salinity is assumed constant
101        contribution of snow flooding to freshening of sea ice is neglected.
102        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
103        defaults to 0.0 in order to maintain backward compatibility.
104        Typical values for SEAICE_salinity are 4 to 10 g/kg.
105      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
106      * added SEAICE_availHeatFrac, which specifies fraction of surface level
107        heat content used to melt or grow ice
108      * commented out cap of HICE: it helps keep ice thinner
109      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
110      * applied OBCS T/S mask to HEFFM sea ice mask
111    
112    checkpoint59d
113    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
114     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
115     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
116    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
117     and change default value of parameter "GM_Small_Number";
118     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
119       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
120       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
121    o pkg/ecco: cost function when applying pkg/smooth to controls
122    o pkg/ctrl: add forcingPrecond run time parameter
123    o pkg/seaice:
124     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
125     - fix bug in metric terms of u-equation in LSR solver (implicit part),
126       changes verification/lab_sea
127     - rearrange implicit part of u-equation in LSR solver to make it easier to
128       read, understand, and debug. This causes changes at the truncation level.
129     - fix (serious) bug in the boundary conditions (sign error in the implicit
130       part) of the LSR solver. Changes all LSR results.
131     - fixed problem with HSNOW initialization to avoid thick snow when AREA
132       is initilized with small values - does not change lab_sea results.
133     - added HsnowFile initialization capability
134    o pkg/smooth: addition to model/src and pkg/ctrl so allow
135     initialization of pkg/smooth and application to control vector
136    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
137    o dependencies: pkg/profiles requires pkg/cal
138    o pkg/profiles:
139     - added option ALLOW_PROFILES_GENERICGRID
140         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
141         that interpolation information (grid points and coefficients) is provided
142         within the netcdf input files.
143         -> sample matlab scripts can be found in MITgcm_contrib/gael
144         that allow you to prepare netcdf input files.
145     - also modified: cleaner include statements, cleaner error print statements,
146       cleaner stops when error, and more tests of the netcdf input files consistency.
147    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
148    o pkg/seaice:
149     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
150       requires a new routine: seaice_diagnostics_fill.F
151     - make sure that seaice does not move if not forced (pressure replacement
152       method, Hibler and Ip, 1995), changes results
153     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
154     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
155       It is turned off by default (=-1.), because it changes the results.
156     - make it possible to read AREA from a file, too.
157    
158    checkpoint59c
159    o add S/R and diagnostics for oceanic mixed-layer depth
160    o move GMRedi call after all vertical mixing schemes (including KPP)
161    o pkg/thsice:
162     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
163      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
164    o pkg/obcs:
165     - bug fix for balance code
166    o pkg/seaice:
167      - allow values of SEAICE_elasticParm > 1
168      - add new parameter SEAICE_evpTauRelax as an alternative
169        to SEAICE_elasticParm
170      - make lsr boundary conditions free slip (by default), changes result
171      - add code for no slip boundary conditions for lsr
172      - set minimum of zeta to zero (and not 4e8) (changes results)
173      - add a cap on AREA after advecting AREA if seaice_growth is not called
174    o change calculation of Visbeck K:
175      - no longer depend on tapering scheme; instead, compute slope (limited
176        by GM_maxSlope). this is equivalent to what was comuted before with
177        clipping or linear tappering.
178      - fix vertical averaging (wrong by 1/2 level)
179      - leave the old version (but will not be maintained) within
180        #ifdef OLD_VISBECK_CALC / #endif
181      - update output of exp. ideal_2D_oce
182    o change error catch in calc_r_star to improve vectorization
183    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
184      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
185    o adjoint:
186      Re-organized adjoint checkpointing according to Matt Mazloff
187      (but with modifs/completions/cleanups)
188      Storing is now bundled into large arrays to optimized I/O
189      (and second step in cleanup of the_main_loop)
190    
191    checkpoint59b
192    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
193      - export/import (between ocean & coupler) fields needed for ocean DIC.
194    o pkg/seaice:
195      - get rid of three more exchanges seaice_calc_viscosities (required
196        different loop boundaries in seaice_lsr and seaice_ocean_stress)
197      - bug fix in seaice_ocean_stress (update of lab_sea required)
198      - reduce loop boundaries to necessary minimum also in seaice_evp
199      - go back to the old way of computing deltaC/Z as the adjoint likes that
200        better
201    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
202      passive tracer to an Age Tracer) + update output.txt
203    o pkg/exf:
204      - implement A-grid / C-grid selection for wind-stress input files.
205      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
206      for now, in exf_bulk_largeyeager04.F only :
207      - change implementation for case where windspeed + 2. components wind-stress
208        are read-in. AND use rhoConstFresh to convert evap.
209    o pkg/seaice:
210      - use correct EXCH_UV for wind-forcing (on A-grid).
211      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
212        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
213    o pkg/exf:
214      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
215      EXF_INTERPOLATION:
216      - merge global_with_exf/code version of exf_interp_read.F
217        to the main code ;
218      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
219        reading the file ; Important: This options needs to be defined to recover
220        previous code.
221        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
222      - no longer loose real*8 precision along the way when using exf_iprec=64.
223    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
224      - change discretisation of evp-solver in order to avoid another exchange
225        (changes lab_sea) and clean up a little
226      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
227        help the adjoint (this also changes the results slightly)
228      - add a few "_d 0" where they had been missing in seaice_evp.F
229      - cleaning up: remove unused seaice_calc_rhs.F
230    o pkg/exf: some cleaning-up:
231      - change various "constants" into runtime parameters
232      - cleaned-up Large&Yeager04 routine which should eventually
233        replace exf_bulkformulae.F (changed names of S/R and CPP)
234        and merged various ALLOW_ATM_WIND options
235     only used with thsice pkg (in thsice_get_exf.F):
236      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
237        which are used when useStabilityFct_overIce=TRUE (= the default)
238      - change default values of ice & snow emissivity and scale downward LW
239        by ice & snow emissivity.
240    o pkg/thsice:
241     fix few little problems, in thsice_calc_thickn.F:
242      - growth vertically (and not laterally) if iceFrac == iceMaskMax
243      - melt only laterally if hIce < hThinIce (as the comments say)
244      and in thsice_extend.F:
245      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
246      - start to form ice as soon as the minimum ice-volume is reachable.
247     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
248      and cpl_aim+ocn
249    o pkg/kpp
250     - move computation of surface related input fields to KPP into a new
251       subroutine kpp_forcing_surf.F
252     - remove wrong (within bi,bj loops) EXCH calls.
253     - little cleaning (add argument myThid in last position, cvs header ...)
254     - for now, fix conservation problem by exchanging KPPviscAz (may not
255       be the best fix)
256    o pkg/seaice
257     - check for inconsistent evp parameter/cpp-flag combination
258     - remove leftover errIO flat for obsolete name list error handling
259    o OpenAD
260     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
261    
262    checkpoint59a
263    o pkg/seaice: some parameter clarifications and a little bit of clean up
264    o pkg/thsice: rename run-time parameters:
265       himin       -> hIceMin
266       himin0      -> hThinIce
267       hihig       -> hThickIce
268       i0          -> i0swFrac
269       transCoef   -> bMeltCoef
270       frac_energy -> fracMelting
271      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
272       with default values (for now) that do not change the results.
273      remove old version of thsice vars advection in pkg/seaice.
274    o in FFIELDS.h:
275      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
276      - make pLoad & sIceLoad always available (but still only used if
277         ATMOSPHERIC_LOADING is #define).
278    o pkg/kpp: replaced _KPP_RL with _RL
279    o bug fixes for vertical diffusivity computations when both KPP and
280        3D diffusivity arrays are used.
281    o pkg/seaice: fix bug in evp solver, while doing that
282      - change (improve?) discretization of stress computations for both
283        cgrid-lsr and evp solver
284      - add a new routine to compute strain rates
285      - the above changes lab_sea results
286      - add no slip conditions for evp solver (off by default), lsr-version
287        may follow
288      - fix exchange for shear at Z-points (does not change lab_sea)
289      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
290        (to force the user to pick a time step since there is not "safe" way
291        of choosing it)
292      - add principal stress diagnostics
293      - rearrange fields for evp a little to avoid having to call a: too many
294        exchanges and b: exchanges for stress trensor components which we do
295        not have.
296      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
297        of evp, complete rewrite for lsr case (latter is does not yet work
298        in all cases)
299    o pkg/kpp: add code to have mixing in shelf ice caverns
300      - add myThid to all kpp routines (long overdue)
301    
302    checkpoint59
303    o pkg/exf:
304      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
305        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
306      - move exf header files from lower_case.h to UPPER_CASE.h ;
307        add missing cvs Header & Name
308      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
309      - add namelist param. selectStressGridPosition, exf_monFreq
310      - retire many _CLIM routines, and remove data.exf_clim
311        + params moved to data.exf
312        + climsst, climsss now handled by exf_set_gen, i.e.
313          climss?period=0 refers to constant field,
314          climss?period=-12 to monthly forcing
315      - split up namelists in data.exf
316    o pkg/seaice:
317      - remove seaice_exch and seaice_exch_uv
318      - remove superfluous exchange of theta
319      - add myThid to seaice_budget_ocean/ice
320      - add new interface for atmospheric wind forcing (C-grid only)
321        + new routine
322        + two new field (taux, tauy for stress over ice)
323        + removed one global field (DAIRN) for C-grid case only
324    o pkg/thsise
325      - 2nd set of modifs for thsice adjoint in conjunction with exf
326    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
327    
328    checkpoint58y_post
329    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
330      vertical diffusivity, similar to that in MOM4; turned on using
331      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
332      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
333    o Added capability for 3D specification of background vertical diffusion
334      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
335      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
336      "data" file that contains the 3D vertical diffusivity coefficients.
337    o ice dynamics (pkg/seaice) with thsice thermodynamics:
338      - add code within pkg thsice to advect & diffuse sea-ice fields
339      similar to (and will replace) what has been added in  seaice_advdiff.F,
340      but: - conserving Mass, Heat & Salt.
341           - better when using non-linear advection scheme (not yet fully tested)
342           - can also be used in atmospheric set-up (for now, only the diffusion).
343    
344    checkpoint58x_post
345    o IO option for global-file compact format:
346      - add options when generating topology (utils/exch2/matlab-topology-generator)
347      - add I/O capability (pkg/mdsio).
348      - adapt utils/matlab/rdmds.m to read this format.
349      for now long-line format not yet supported by pkg/mdsio (& exch2).
350    o shelfice: add a few diagnostics
351    
352    checkpoint58w_post
353    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
354      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
355      (and replace horiVertRatio in NH code).
356      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
357                         and tutorial_plume_on_slope (sensitive to truncation)
358    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
359      directly to drive seaice model (C-grid only)
360    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
361     - reintroduce computation of wind from stress,
362     - compute tau (in exf_bulkformulae.F) from windstress averaged to
363       mass points to avoid tau = 0
364     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
365    o rdmnc.m: make it work with "global" files created with gluemnc
366    o rdmnc.m : some improvements in dealing with singleton dimension
367      (tested on all testreport mnc output files).
368    o genmake2: disable pkg/profiles if netcdf test fails.
369    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
370    o move call to cal_readparms up to make calendar parameters/variable available
371      to all packages
372    
373    checkpoint58v_post
374    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
375      useDynP_inEos_Zc tested.
376    o pkg/exf: changes to properly interpolate/mask/scale initial fields
377    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
378      and portions thereof.  See read_cs.txt for description and examples.
379    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
380      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
381      following the great-circle arc between those 2 points.
382    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
383      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
384    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
385     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
386     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
387     - still needs work (not working with some options ; efficiency to improve)
388       and serious testing.
389     - use this scheme for temperature & salinity in 2 advection test exp.:
390       advect_xy & advect_xz, respectively.
391    
392    checkpoint58u_post
393    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
394    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
395    o testreport: add option "-skipdir" to skip some test.
396    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
397      momentum calculation.
398    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
399    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
400      remove checkpoint.F and the_correction_step.F (no longer used);
401      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
402    o add option (linFSConserveTr) to correct for tracer source/sink due to
403      Linear Free surface
404    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
405    o pkg/thsice: fix reading mnc-pickups
406    
407    checkpoint58t_post
408    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
409    o pkg/mdsio:
410     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
411       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
412       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
413     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
414     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
415       either MDS_READ_FIELD or MDS_WRITE_FIELD )
416     - new S/R (to replace MDSWRITEMETA), which allows to write more
417       informations (variable names, time ...) to meta files.
418     - modify rdmds.m to give back the meta file content.
419    o pkg/diagnostics: change vertical interpolation to be safer, and more
420       flexible (define p-levels to interpolate to in data.diagnostics);
421      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
422       diagnostic pointer.
423    o pkg/seaice: more cleaning up of seaice_growth, added many comments
424    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
425    o fix multi-category seaice:
426     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
427       SEAICE_MULTICATEGORY
428     - fix short wave heat flux
429    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
430       and allow to use EVP solver. Change forward lab_sea: test both EVP
431       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
432    o Initial check-in of lab_sea adjoint
433      (very similar to natl_box_adjoint/code_seaice)
434      * used C-grid and EVP solver
435      * used KPP, GM/Redi
436      * uses inAdExact=.TRUE.
437      * gradient checks fail for both ADM and TLM
438        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
439        f.d. gradients actually seem more problematic than ADM, TLM gradients;
440        issue is related to forward mismatch between g77 an ifort
441    o pkg/seaice: overhaul of thermodynamics
442     - growth.F and groatb.F are replaced by new routine seaice_growth.F
443     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
444     - move a few global fields out of SEAICE.h into seaice_growth.F and
445       make them 2D (FICE/QNETO/ ...)
446     - remove FO (it is the same as QNETO)
447     - introduce a few local fields to avoid modifying external fields such
448       as atemp, etc.
449    
450    checkpoint58s_post
451    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
452      changed exf_set_gen.F so that
453        genperiod=0 means input file is one time-constant field and
454        genperiod=-12 means input file contains 12 monthly means
455    o CG2D: use pre-computed solver main-diagonal (stored in common block);
456      this affects truncation error ; generate new output file for exp. which
457      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
458        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
459        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
460        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
461        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
462        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
463    o start implementation of deep-atmosphere and anelastic formulation
464    o verification: remove 2nd copy of input files and use script "prepare_run"
465      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
466    o mom_common/vecinv/fluxform: fix a few initialisation isssues
467    o profiles: fix for multithreaded case
468    
469    o diagnostics: rename few diags:
470      s/'PRESSURE'/'RCENTER '/g
471      s/'TICE    '/'oceFreez'/g
472      s/'TAUX    '/'oceTAUX '/g
473      s/'TAUY    '/'oceTAUY '/g
474      s/'SWFLUX  '/'oceQsw  '/g
475      s/DIFx/DFxE/g
476      s/DIFy/DFyE/g
477      and add few ocean-forcing diagnostics:
478      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
479    o modifications to pkg/seaice/growth.F and budget.F, which change results of
480      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
481      as actual snow thickness.  It now refers everywhere to effective snow
482      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
483    
484    checkpoint58r_post
485    o modifications to pkg/seaice/growth.F, which change results of
486      lab_sea experiment: fixes pertain to melting snow over open water, to
487      masking EVAP under sea ice, and to using the correct AREA variable for
488      computations of EVAP, PRECIP, HSNOW, and GHEFF
489    o add ability to read bathy, salt, and theta using MNC (off by def)
490    o add flooding algorithm and advection of HSNOW for pkg/seaice;
491      both are turned off by default and do no change any results
492    o seaice advection with pkg/thsice: a step toward the use of non-linear
493      advection scheme, but #ifdef or commented out for now (requires more EXCH).
494    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
495      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
496      in natl_box (affects results @ truncation level: update output.txt)
497    o multi-threading and IO:
498      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
499      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
500        (needed to work with SingleCpuIO): tested in all verif. exp.
501    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
502      affects the results (but none of the verification test uses this scheme).
503    o Adding some pkg/diagnostics capability to pkg/seaice
504      (will certainly be subject to changes)
505    o ctrl: adding new control variables:
506      lwflux, lwdown, evap, snowprecip, apressure, runoff
507    
508    checkpoint58q_post
509    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
510      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
511      high_res_cube configuration by 4% on Columbia.
512    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
513      add (in global_with_exf/code) a version of EXF_INTERP_READ without
514      dynamical allocation (seems to work in multi-threaded).
515    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
516      single CPU io) so that TAF does not have to see EESUPPORT.h
517    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
518    
519    checkpoint58p_post
520    o obcs: stop if obcs is used with useCDscheme = .true.
521    o shelfice:
522     - fix a sign error so that no slip at shelfice interface works
523     - remove stop for combination non-hydrostatic code and shelfice. That does
524       not mean, that the results are correct, but at least they are numerically
525       stable
526    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
527    o added adjoint exch routined for all exch*3d* routines
528      and updated flow directives
529    
530    checkpoint58o_post
531    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
532      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
533    o change controling S/R for writing pickup file (new S/R do_write_pickup)
534      and clean-up reading/writing of pickup files.
535    o fix local version of read/write pickup (NH part) in rotating_tank/code
536    o simplify EXCH interface:
537     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
538     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
539    o added the regrid package
540    o shelfice:
541     - add a simple boundary layer scheme to reduce noise
542     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
543    
544    checkpoint58n_post
545    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
546       local variable (not in common block).
547    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
548      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
549      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
550        to work with SingleCpuIO.
551    o add "_d 0" to real constant of pkg/cfc subroutines ;
552       update exp. cfc_exemple & tutorial_cfc_offline output files.
553    o multi-threading and IO:
554      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
555        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
556      - barrier before and after reading.
557      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
558      - avoid using MDS_WRITELOCAL for LAND pkg output.
559      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
560        common-block variables ; Allows multi-threading with master-thread IO.
561    o change default MAX_NO_THREADS from 32 to 4 ;
562      and stop cleanly when MAX_NO_THREADS is too small.
563    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
564    
565    checkpoint58m_post
566    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
567       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
568    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
569       keep global_ocean.90x40x15 (for AD testing) with former secondary test
570       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
571    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
572        add MITgcm_tutorials (= code + all the tutorials)
573    o ecco, option to compute cost for total ssh (mean+anom)
574    o consistent with addition of ptracer and ssh in pkg/profiles
575    o profiles: adding ptracer and ssh
576    o testreport: change multi-test output-file name
577      (from output.txt.{name} to output.{name}.txt)
578    o profiles: now ok for mutli-tiles case
579    o seaice: add 4 parameters for different advection schemes for area,
580      (effective) seaice thickness, enthalphy, and snow height. Their default
581      is the standard parameter SEAICEadvScheme
582    o calc_gw:
583     - add cosFacU in zonal viscous flux (harmonic.visc.).
584     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
585       of tutorial_plume_on_slope.
586    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
587    o calc_gw: true flux-form, account for horizontal grid spacing.
588      update rotating_tank results, but not plume_on_slope (affected at
589      truncation level, 11 digits).
590    
591    checkpoint58l_post
592    o calc_gw:
593     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
594     - remove side-drag for now (need to fix it); update plume_on_slope results.
595     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
596    o commit code to make SST/SSS weights spatially variable
597      (based on either variable in-situ or variable initial T/S weights)
598    o pkg/ecco:
599      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
600        now based on horizontally varying weights wthetaLev, wsaltLev
601      * cost_averagesflags now returns year indices in addition to day, month
602      * sflux balance is performed on annual basis
603        (sflxumm, sfluxmm2, bal_sfluxmm)
604      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
605        including separate counting and multipliers
606    o pkg/rbcs
607      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
608    
609    checkpoint58k_post
610    o testreport:
611     - always build in dir. "build" (if not there, mkdir build instead of building
612       & running in input)
613     - run in dir run (if it exists), in build otherwise.
614     - call prepare_run (if input/prepare_run exists)
615     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
616    o pkg/exf modifications to interpolation and rotation routines for more
617       reasonable treatment of North Pole singularity: for tracers North Pole
618       value is set to northernmost zonal-mean value, for zonal velocity it is
619       set to zero, and for meridional velocity it is set to northernmost value.
620    o pkg/exf/exf_check_range.F
621     - add tile index to diagnostics and move stop statement to the very
622       end of the routine.
623    o pkg/diagnostics: (diagnostics_main_init.F)
624      define title of isomorphic variables according to the current config.
625    o pkg/thsice with pkg/seaice dynamics:
626    - fix domain of computation (interior only, required for exf) and do exchanges
627    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
628    o towards a standard way of dealing with multi-threading in MONITOR
629      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
630    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
631       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
632    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
633    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
634    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
635       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
636    o tracer advection:
637     - clean-up and simplify calc_common_factors.F
638     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
639       advection subroutine (but still not used within DST advection S/R)
640    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
641    
642    checkpoint58j_post
643    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
644      from file (collects calls previously in FORWARD_STEP)
645    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
646    o adjoint store dir. adjusted accordingly
647    o genmake2
648      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
649    
650    checkpoint58i_post
651    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
652      on wind stress (SEAICEstressFactor defaults to 1.)
653    o Total number of Timers is finite (<=40): comment out 2 non-essential one
654      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
655    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
656      on CS-grid: no longer loosing mass.
657    o exf & curvilinear-grid: no longer modify longitude xC & xG.
658    o pkg/ggl90: fix sloppy output and fix a bug
659    o pkg/seaice: added SEAICEuseEVPpickup parameter
660      - Set to false in order to start EVP solver with
661        non-EVP pickup files when using SEAICEuseEVP
662      - fix sign error in diffusion in seaice_calc_rhs
663    
664    checkpoint58h_post
665    * Modifications for bottom topography control
666      o replace hFacC by _hFacC at various places
667      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
668      o add non-self-adjoint cg2d_nsa
669      o update autodiff support routines
670      o re-initialise hfac after ctrl_depth_ini
671      o works for 5x5 box, doesnt work for global_ocean.90x40x15
672    * Adding verification for 5x5 box (4-layer) bottom topography control
673    
674    checkpoint58g_post
675    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
676       used for mean seasonal cycle, mean diurnal cycle); add an example
677       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
678    o pkg/ggl90:
679      - add parameter (minimum surface kinetic energy)
680      - fix bug (avoiding division by zero)
681    o couple pkg/thsice to pkg/seaice:
682      - modify advection in seaice to accomodate new scalar fields to be advected
683      - only muliDimAdection scheme work with seaice/thsice
684      - mapping of thsice-variables to seaice-variables, back and forth
685      - does not break the verification experiments, but does not give the
686        desired results either
687    o pkg/seaice
688      - make (default) second order advection a bit less confusing?
689    
690    checkpoint58f_post
691    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
692      to pkg/seaice):
693      - new routines thsice_map_exf and thsice_get_exf provide the interface
694      - add an additional formal parameter to thsice_solve4temp
695    o pkg/exf:
696      - add new fields wspeed, snowprecip (to be able to couple to thsice)
697      - correct Stefan-Boltzmann constant
698      - new parameter for longwave surface emittance
699      - separate some stuff from exf_bulkformulae into new routines  
700        exf_radiation, exf_wind
701      - add new parameters and constants: longwave emissivity for ocean, ice
702        and snow, evaporation parameters over ice
703      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
704        either wind from stress or stress from wind
705    o pkg/thSIce:
706    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
707    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
708       and THSICE_CALC_THICKN
709    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
710    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
711      to make debugging easier.
712    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
713    o pkg/bulk_force:
714      - clean-up comments and parameters ;
715      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
716    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
717      generate new output for test-experiment: aim.5l_cs.thSI
718    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
719      testreport accordingly
720    
721    checkpoint58e_post
722    o SEAICE_CGRID adjoint done
723    o R_STAR adjoint implemented.
724      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
725      * need to sort out init. of h0facc, etc.
726    o Make pkg/profile fully independent of ecco,cost, etc. stuff
727      to be able to use it in pure forward.
728    
729    checkpoint58d_post
730    o upgrade simple test-experiment to tutorial example:
731     step.1: duplicate the experiment and (step.2) will remove the old copy.
732      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
733      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
734      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
735      tutorial_global_oce_biogeo    <- copy of dic_example
736      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
737      tutorial_plume_on_slope       <- copy of plume_on_slope
738      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
739      tutorial_global_oce_optim     <- empty for now (David ?)
740      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
741     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
742    o correct a sign problem in cost_scat.F
743    o obcs and ptracers: fix boundary conditions for advections schemes
744      with larger stencil
745    o thsice adjoint: start
746    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
747      completeness
748    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
749      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
750    o ptracers adjoint:
751      * avoid extensive recomputatations
752      * fix missing re-init. of gptr (missed by TAF)
753    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
754      me to turn off the excessive output to STDOUT that this package produces
755    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
756      and add those terms in Vector-Invariant formulation.
757    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
758      if the control period (xx_hfluxperiod etc) is 0
759    o in profiles pkg, clean routines and fix details
760    o in ecco pkg, reading ssh data:
761      fix problem in case the model does not start at iter0=0
762    o fix mnc-pickup/restart for ptracers
763    o new package prifiles:
764      code to compute profile-based cost by Gael Forget
765      (modifs in ecco, ctrl, autodiff)
766    o Benign bug fix in initialization (spotted by M. Mazloff) of
767      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
768    
769    checkpoint58c_post
770    o adjoint: finish NLFS adjoint and provide reference output in
771      verification/global_ocean.90x40x15/results_ad_nlfs
772  o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the  o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
773    documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in    documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
774    SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only    SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only

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