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revision 1.638 by heimbach, Thu Mar 23 19:59:59 2006 UTC revision 1.887 by mlosch, Wed Oct 3 19:42:16 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 add new diagnostics to seaice: advective, diffusive fluxes (only for
8      multidim-advection, for scheme 2 they are not filled) and transports,
9      thermodynamic growth rates
10    o change units of EmPmR (inside the code) from m/s to kg/m2/s (mass flux) but
11      leave input file unchanged. Affects results @ truncation level (cg2d match)
12      and update output of experiments: lab_sea(6), global_ocean.90x40x15(10),
13      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
14      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
15      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
16    
17    checkpoint59h
18    o pkg/exf:
19      - improve vectorization by moving if-statement out of loops in
20        exf_mapfields, exf_radiation
21      - exf_bulkformulae.F: introduce 2D fields and vectorize code
22    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
23    o testreport:
24      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
25        monitor & update offline_exf_seaice exp. output.
26      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
27    o pkg/seaice:
28      - bug fix in the evp solver: boundary conditions were affected be
29        masking of zMax/zMin (changes results)
30      - minor bug fix in boundary conditions in seaice_calc_strainrates
31        (changes results for no_slip)
32      - seaice_lsr.F: make interpolation of eta dependent on boundaries
33      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
34      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
35        stress formulation and no-slip boundary conditions
36    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
37      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
38    o pkg/seaice: a first HSALT time stepping equation has been checked in
39    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
40      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
41      without requiring DO-IF statements
42    o pkg/thsice:
43      use continuous power-law function for partition of energy between lateral
44      melting/freezing and thinning/thickening ; old code using step function
45      still available with #undef THSICE_FRACEN_POWERLAW
46      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
47    o testreport: change AD testing : check against results/output_adm.txt
48      using same scripts as for forward test.
49    
50    checkpoint59g
51    o adjoint testing: in preparation for changing testreport:
52      - output format: cost and grad written on separated lines
53      - ad output results in directory "results" (instead of "results_ad")
54    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
55    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
56    o pkg/ecco: allow user defined cost function contributions
57    o testreport:
58      Allow to choose (per experiment) the list of tested output variables
59       and the main variable (used to issue a pass/FAIL ) ;
60      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
61      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
62      Also modify printing of summary:
63       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
64       b) echo the list of tested variables in the individual summary.txt of
65          each experiment.
66    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
67      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
68      (but still depend on the tile decompostion of the domain).
69    o pkg/seaice: change a discretization detail to make the B-grid code
70      "more symmetric". This change is likely to remove all "ridges/leads" that
71      where quasi-aligned with the grid in B-grid solutions. It may also be
72      the solution to the stress coupling issues with the B-grid.
73    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
74      remove .cvsignore from input dir. (since testreport no longer run here).
75    o pkg/thsice:
76     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
77     - fix reshaping of sea-ice just after advection:
78       melt all the ice only if ice-volume is too small.
79     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
80       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
81     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
82    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
83      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
84    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
85      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
86      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
87      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
88      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
89      -> update output.txt
90    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
91     this affects truncation error: -> update output.txt of exp:
92      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
93      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
94    
95    checkpoint59f
96    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
97    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
98      a bounded range (in forward mode)
99    o pkg/ecco, ctrl, autodiff and mom_common:
100     internal parameter controls, completements of implementations
101    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
102    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
103      (not seem any difference in testing results).
104    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
105       at face corners.
106    o pkg/generic_advdiff:
107     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
108      loop range indices for computing vertical advection tendency
109      and do the calculation in the interior only (no overlap) ;
110      for now, only implemented for SOM advection (to save CPU time).
111     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
112    o exch2 adjoint
113      First set of changes:
114      - add exch2 hand-written adjoint templates
115      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
116        This will require cleanup in pkg/autodiff/*.F
117        (changed routines currently kept separate in verif. code/)
118      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
119        that used to hide exch2 or cubed-sphere specific code
120        (commented via 'cph-exch2')
121    o pkg/seaice
122      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
123    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
124       output of global_ocean.cs32x15.thsice .
125    
126    checkpoint59e
127    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
128      for B-grid vector (not yet tested) and C-grid vector (<- only used
129      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
130    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
131      (#ifdef ALLOW_SALT_PLUME)
132    o gather_2d/scatter_2d: removed halo regions
133    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
134      scheme and the corresponding test case (under front_relax dir). For now,
135      only available with Skew-flux form and not yet tested in realistic set-up.
136      adjoint: store directives updated, but gradient checks deteriorated,
137      so maybe GM/Redi adjoint is now broken.
138    o seaice adjoint
139      * add AREA, HEFF, HSNOW as control variable
140        (should not change lab_sea results)
141      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
142    o pkg/seaice:
143      * added computation of saltFlux in seaice_growth;
144        For time being, sea ice salinity is assumed constant
145        contribution of snow flooding to freshening of sea ice is neglected.
146        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
147        defaults to 0.0 in order to maintain backward compatibility.
148        Typical values for SEAICE_salinity are 4 to 10 g/kg.
149      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
150      * added SEAICE_availHeatFrac, which specifies fraction of surface level
151        heat content used to melt or grow ice
152      * commented out cap of HICE: it helps keep ice thinner
153      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
154      * applied OBCS T/S mask to HEFFM sea ice mask
155    
156    checkpoint59d
157    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
158     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
159     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
160    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
161     and change default value of parameter "GM_Small_Number";
162     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
163       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
164       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
165    o pkg/ecco: cost function when applying pkg/smooth to controls
166    o pkg/ctrl: add forcingPrecond run time parameter
167    o pkg/seaice:
168     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
169     - fix bug in metric terms of u-equation in LSR solver (implicit part),
170       changes verification/lab_sea
171     - rearrange implicit part of u-equation in LSR solver to make it easier to
172       read, understand, and debug. This causes changes at the truncation level.
173     - fix (serious) bug in the boundary conditions (sign error in the implicit
174       part) of the LSR solver. Changes all LSR results.
175     - fixed problem with HSNOW initialization to avoid thick snow when AREA
176       is initilized with small values - does not change lab_sea results.
177     - added HsnowFile initialization capability
178    o pkg/smooth: addition to model/src and pkg/ctrl so allow
179     initialization of pkg/smooth and application to control vector
180    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
181    o dependencies: pkg/profiles requires pkg/cal
182    o pkg/profiles:
183     - added option ALLOW_PROFILES_GENERICGRID
184         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
185         that interpolation information (grid points and coefficients) is provided
186         within the netcdf input files.
187         -> sample matlab scripts can be found in MITgcm_contrib/gael
188         that allow you to prepare netcdf input files.
189     - also modified: cleaner include statements, cleaner error print statements,
190       cleaner stops when error, and more tests of the netcdf input files consistency.
191    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
192    o pkg/seaice:
193     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
194       requires a new routine: seaice_diagnostics_fill.F
195     - make sure that seaice does not move if not forced (pressure replacement
196       method, Hibler and Ip, 1995), changes results
197     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
198     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
199       It is turned off by default (=-1.), because it changes the results.
200     - make it possible to read AREA from a file, too.
201    
202    checkpoint59c
203    o add S/R and diagnostics for oceanic mixed-layer depth
204    o move GMRedi call after all vertical mixing schemes (including KPP)
205    o pkg/thsice:
206     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
207      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
208    o pkg/obcs:
209     - bug fix for balance code
210    o pkg/seaice:
211      - allow values of SEAICE_elasticParm > 1
212      - add new parameter SEAICE_evpTauRelax as an alternative
213        to SEAICE_elasticParm
214      - make lsr boundary conditions free slip (by default), changes result
215      - add code for no slip boundary conditions for lsr
216      - set minimum of zeta to zero (and not 4e8) (changes results)
217      - add a cap on AREA after advecting AREA if seaice_growth is not called
218    o change calculation of Visbeck K:
219      - no longer depend on tapering scheme; instead, compute slope (limited
220        by GM_maxSlope). this is equivalent to what was comuted before with
221        clipping or linear tappering.
222      - fix vertical averaging (wrong by 1/2 level)
223      - leave the old version (but will not be maintained) within
224        #ifdef OLD_VISBECK_CALC / #endif
225      - update output of exp. ideal_2D_oce
226    o change error catch in calc_r_star to improve vectorization
227    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
228      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
229    o adjoint:
230      Re-organized adjoint checkpointing according to Matt Mazloff
231      (but with modifs/completions/cleanups)
232      Storing is now bundled into large arrays to optimized I/O
233      (and second step in cleanup of the_main_loop)
234    
235    checkpoint59b
236    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
237      - export/import (between ocean & coupler) fields needed for ocean DIC.
238    o pkg/seaice:
239      - get rid of three more exchanges seaice_calc_viscosities (required
240        different loop boundaries in seaice_lsr and seaice_ocean_stress)
241      - bug fix in seaice_ocean_stress (update of lab_sea required)
242      - reduce loop boundaries to necessary minimum also in seaice_evp
243      - go back to the old way of computing deltaC/Z as the adjoint likes that
244        better
245    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
246      passive tracer to an Age Tracer) + update output.txt
247    o pkg/exf:
248      - implement A-grid / C-grid selection for wind-stress input files.
249      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
250      for now, in exf_bulk_largeyeager04.F only :
251      - change implementation for case where windspeed + 2. components wind-stress
252        are read-in. AND use rhoConstFresh to convert evap.
253    o pkg/seaice:
254      - use correct EXCH_UV for wind-forcing (on A-grid).
255      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
256        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
257    o pkg/exf:
258      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
259      EXF_INTERPOLATION:
260      - merge global_with_exf/code version of exf_interp_read.F
261        to the main code ;
262      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
263        reading the file ; Important: This options needs to be defined to recover
264        previous code.
265        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
266      - no longer loose real*8 precision along the way when using exf_iprec=64.
267    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
268      - change discretisation of evp-solver in order to avoid another exchange
269        (changes lab_sea) and clean up a little
270      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
271        help the adjoint (this also changes the results slightly)
272      - add a few "_d 0" where they had been missing in seaice_evp.F
273      - cleaning up: remove unused seaice_calc_rhs.F
274    o pkg/exf: some cleaning-up:
275      - change various "constants" into runtime parameters
276      - cleaned-up Large&Yeager04 routine which should eventually
277        replace exf_bulkformulae.F (changed names of S/R and CPP)
278        and merged various ALLOW_ATM_WIND options
279     only used with thsice pkg (in thsice_get_exf.F):
280      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
281        which are used when useStabilityFct_overIce=TRUE (= the default)
282      - change default values of ice & snow emissivity and scale downward LW
283        by ice & snow emissivity.
284    o pkg/thsice:
285     fix few little problems, in thsice_calc_thickn.F:
286      - growth vertically (and not laterally) if iceFrac == iceMaskMax
287      - melt only laterally if hIce < hThinIce (as the comments say)
288      and in thsice_extend.F:
289      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
290      - start to form ice as soon as the minimum ice-volume is reachable.
291     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
292      and cpl_aim+ocn
293    o pkg/kpp
294     - move computation of surface related input fields to KPP into a new
295       subroutine kpp_forcing_surf.F
296     - remove wrong (within bi,bj loops) EXCH calls.
297     - little cleaning (add argument myThid in last position, cvs header ...)
298     - for now, fix conservation problem by exchanging KPPviscAz (may not
299       be the best fix)
300    o pkg/seaice
301     - check for inconsistent evp parameter/cpp-flag combination
302     - remove leftover errIO flat for obsolete name list error handling
303    o OpenAD
304     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
305    
306    checkpoint59a
307    o pkg/seaice: some parameter clarifications and a little bit of clean up
308    o pkg/thsice: rename run-time parameters:
309       himin       -> hIceMin
310       himin0      -> hThinIce
311       hihig       -> hThickIce
312       i0          -> i0swFrac
313       transCoef   -> bMeltCoef
314       frac_energy -> fracMelting
315      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
316       with default values (for now) that do not change the results.
317      remove old version of thsice vars advection in pkg/seaice.
318    o in FFIELDS.h:
319      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
320      - make pLoad & sIceLoad always available (but still only used if
321         ATMOSPHERIC_LOADING is #define).
322    o pkg/kpp: replaced _KPP_RL with _RL
323    o bug fixes for vertical diffusivity computations when both KPP and
324        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
325        are no longer updating the vertical diffusivity array
326        (passed as argument) but are (re-) setting those arrays.
327    o pkg/seaice: fix bug in evp solver, while doing that
328      - change (improve?) discretization of stress computations for both
329        cgrid-lsr and evp solver
330      - add a new routine to compute strain rates
331      - the above changes lab_sea results
332      - add no slip conditions for evp solver (off by default), lsr-version
333        may follow
334      - fix exchange for shear at Z-points (does not change lab_sea)
335      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
336        (to force the user to pick a time step since there is not "safe" way
337        of choosing it)
338      - add principal stress diagnostics
339      - rearrange fields for evp a little to avoid having to call a: too many
340        exchanges and b: exchanges for stress trensor components which we do
341        not have.
342      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
343        of evp, complete rewrite for lsr case (latter is does not yet work
344        in all cases)
345    o pkg/kpp: add code to have mixing in shelf ice caverns
346      - add myThid to all kpp routines (long overdue)
347    
348    checkpoint59
349    o pkg/exf:
350      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
351        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
352      - move exf header files from lower_case.h to UPPER_CASE.h ;
353        add missing cvs Header & Name
354      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
355      - add namelist param. selectStressGridPosition, exf_monFreq
356      - retire many _CLIM routines, and remove data.exf_clim
357        + params moved to data.exf
358        + climsst, climsss now handled by exf_set_gen, i.e.
359          climss?period=0 refers to constant field,
360          climss?period=-12 to monthly forcing
361      - split up namelists in data.exf
362    o pkg/seaice:
363      - remove seaice_exch and seaice_exch_uv
364      - remove superfluous exchange of theta
365      - add myThid to seaice_budget_ocean/ice
366      - add new interface for atmospheric wind forcing (C-grid only)
367        + new routine
368        + two new field (taux, tauy for stress over ice)
369        + removed one global field (DAIRN) for C-grid case only
370    o pkg/thsise
371      - 2nd set of modifs for thsice adjoint in conjunction with exf
372    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
373    
374    checkpoint58y_post
375    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
376      vertical diffusivity, similar to that in MOM4; turned on using
377      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
378      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
379    o Added capability for 3D specification of background vertical diffusion
380      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
381      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
382      "data" file that contains the 3D vertical diffusivity coefficients.
383    o ice dynamics (pkg/seaice) with thsice thermodynamics:
384      - add code within pkg thsice to advect & diffuse sea-ice fields
385      similar to (and will replace) what has been added in  seaice_advdiff.F,
386      but: - conserving Mass, Heat & Salt.
387           - better when using non-linear advection scheme (not yet fully tested)
388           - can also be used in atmospheric set-up (for now, only the diffusion).
389    
390    checkpoint58x_post
391    o IO option for global-file compact format:
392      - add options when generating topology (utils/exch2/matlab-topology-generator)
393      - add I/O capability (pkg/mdsio).
394      - adapt utils/matlab/rdmds.m to read this format.
395      for now long-line format not yet supported by pkg/mdsio (& exch2).
396    o shelfice: add a few diagnostics
397    
398    checkpoint58w_post
399    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
400      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
401      (and replace horiVertRatio in NH code).
402      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
403                         and tutorial_plume_on_slope (sensitive to truncation)
404    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
405      directly to drive seaice model (C-grid only)
406    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
407     - reintroduce computation of wind from stress,
408     - compute tau (in exf_bulkformulae.F) from windstress averaged to
409       mass points to avoid tau = 0
410     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
411    o rdmnc.m: make it work with "global" files created with gluemnc
412    o rdmnc.m : some improvements in dealing with singleton dimension
413      (tested on all testreport mnc output files).
414    o genmake2: disable pkg/profiles if netcdf test fails.
415    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
416    o move call to cal_readparms up to make calendar parameters/variable available
417      to all packages
418    
419    checkpoint58v_post
420    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
421      useDynP_inEos_Zc tested.
422    o pkg/exf: changes to properly interpolate/mask/scale initial fields
423    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
424      and portions thereof.  See read_cs.txt for description and examples.
425    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
426      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
427      following the great-circle arc between those 2 points.
428    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
429      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
430    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
431     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
432     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
433     - still needs work (not working with some options ; efficiency to improve)
434       and serious testing.
435     - use this scheme for temperature & salinity in 2 advection test exp.:
436       advect_xy & advect_xz, respectively.
437    
438    checkpoint58u_post
439    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
440    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
441    o testreport: add option "-skipdir" to skip some test.
442    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
443      momentum calculation.
444    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
445    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
446      remove checkpoint.F and the_correction_step.F (no longer used);
447      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
448    o add option (linFSConserveTr) to correct for tracer source/sink due to
449      Linear Free surface
450    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
451    o pkg/thsice: fix reading mnc-pickups
452    
453    checkpoint58t_post
454    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
455    o pkg/mdsio:
456     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
457       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
458       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
459     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
460     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
461       either MDS_READ_FIELD or MDS_WRITE_FIELD )
462     - new S/R (to replace MDSWRITEMETA), which allows to write more
463       informations (variable names, time ...) to meta files.
464     - modify rdmds.m to give back the meta file content.
465    o pkg/diagnostics: change vertical interpolation to be safer, and more
466       flexible (define p-levels to interpolate to in data.diagnostics);
467      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
468       diagnostic pointer.
469    o pkg/seaice: more cleaning up of seaice_growth, added many comments
470    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
471    o fix multi-category seaice:
472     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
473       SEAICE_MULTICATEGORY
474     - fix short wave heat flux
475    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
476       and allow to use EVP solver. Change forward lab_sea: test both EVP
477       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
478    o Initial check-in of lab_sea adjoint
479      (very similar to natl_box_adjoint/code_seaice)
480      * used C-grid and EVP solver
481      * used KPP, GM/Redi
482      * uses inAdExact=.TRUE.
483      * gradient checks fail for both ADM and TLM
484        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
485        f.d. gradients actually seem more problematic than ADM, TLM gradients;
486        issue is related to forward mismatch between g77 an ifort
487    o pkg/seaice: overhaul of thermodynamics
488     - growth.F and groatb.F are replaced by new routine seaice_growth.F
489     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
490     - move a few global fields out of SEAICE.h into seaice_growth.F and
491       make them 2D (FICE/QNETO/ ...)
492     - remove FO (it is the same as QNETO)
493     - introduce a few local fields to avoid modifying external fields such
494       as atemp, etc.
495    
496    checkpoint58s_post
497    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
498      changed exf_set_gen.F so that
499        genperiod=0 means input file is one time-constant field and
500        genperiod=-12 means input file contains 12 monthly means
501    o CG2D: use pre-computed solver main-diagonal (stored in common block);
502      this affects truncation error ; generate new output file for exp. which
503      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
504        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
505        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
506        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
507        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
508        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
509    o start implementation of deep-atmosphere and anelastic formulation
510    o verification: remove 2nd copy of input files and use script "prepare_run"
511      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
512    o mom_common/vecinv/fluxform: fix a few initialisation isssues
513    o profiles: fix for multithreaded case
514    
515    o diagnostics: rename few diags:
516      s/'PRESSURE'/'RCENTER '/g
517      s/'TICE    '/'oceFreez'/g
518      s/'TAUX    '/'oceTAUX '/g
519      s/'TAUY    '/'oceTAUY '/g
520      s/'SWFLUX  '/'oceQsw  '/g
521      s/DIFx/DFxE/g
522      s/DIFy/DFyE/g
523      and add few ocean-forcing diagnostics:
524      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
525    o modifications to pkg/seaice/growth.F and budget.F, which change results of
526      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
527      as actual snow thickness.  It now refers everywhere to effective snow
528      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
529    
530    checkpoint58r_post
531    o modifications to pkg/seaice/growth.F, which change results of
532      lab_sea experiment: fixes pertain to melting snow over open water, to
533      masking EVAP under sea ice, and to using the correct AREA variable for
534      computations of EVAP, PRECIP, HSNOW, and GHEFF
535    o add ability to read bathy, salt, and theta using MNC (off by def)
536    o add flooding algorithm and advection of HSNOW for pkg/seaice;
537      both are turned off by default and do no change any results
538    o seaice advection with pkg/thsice: a step toward the use of non-linear
539      advection scheme, but #ifdef or commented out for now (requires more EXCH).
540    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
541      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
542      in natl_box (affects results @ truncation level: update output.txt)
543    o multi-threading and IO:
544      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
545      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
546        (needed to work with SingleCpuIO): tested in all verif. exp.
547    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
548      affects the results (but none of the verification test uses this scheme).
549    o Adding some pkg/diagnostics capability to pkg/seaice
550      (will certainly be subject to changes)
551    o ctrl: adding new control variables:
552      lwflux, lwdown, evap, snowprecip, apressure, runoff
553    
554    checkpoint58q_post
555    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
556      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
557      high_res_cube configuration by 4% on Columbia.
558    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
559      add (in global_with_exf/code) a version of EXF_INTERP_READ without
560      dynamical allocation (seems to work in multi-threaded).
561    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
562      single CPU io) so that TAF does not have to see EESUPPORT.h
563    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
564    
565    checkpoint58p_post
566    o obcs: stop if obcs is used with useCDscheme = .true.
567    o shelfice:
568     - fix a sign error so that no slip at shelfice interface works
569     - remove stop for combination non-hydrostatic code and shelfice. That does
570       not mean, that the results are correct, but at least they are numerically
571       stable
572    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
573    o added adjoint exch routined for all exch*3d* routines
574      and updated flow directives
575    
576    checkpoint58o_post
577    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
578      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
579    o change controling S/R for writing pickup file (new S/R do_write_pickup)
580      and clean-up reading/writing of pickup files.
581    o fix local version of read/write pickup (NH part) in rotating_tank/code
582    o simplify EXCH interface:
583     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
584     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
585    o added the regrid package
586    o shelfice:
587     - add a simple boundary layer scheme to reduce noise
588     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
589    
590    checkpoint58n_post
591    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
592       local variable (not in common block).
593    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
594      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
595      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
596        to work with SingleCpuIO.
597    o add "_d 0" to real constant of pkg/cfc subroutines ;
598       update exp. cfc_exemple & tutorial_cfc_offline output files.
599    o multi-threading and IO:
600      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
601        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
602      - barrier before and after reading.
603      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
604      - avoid using MDS_WRITELOCAL for LAND pkg output.
605      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
606        common-block variables ; Allows multi-threading with master-thread IO.
607    o change default MAX_NO_THREADS from 32 to 4 ;
608      and stop cleanly when MAX_NO_THREADS is too small.
609    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
610    
611    checkpoint58m_post
612    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
613       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
614    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
615       keep global_ocean.90x40x15 (for AD testing) with former secondary test
616       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
617    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
618        add MITgcm_tutorials (= code + all the tutorials)
619    o ecco, option to compute cost for total ssh (mean+anom)
620    o consistent with addition of ptracer and ssh in pkg/profiles
621    o profiles: adding ptracer and ssh
622    o testreport: change multi-test output-file name
623      (from output.txt.{name} to output.{name}.txt)
624    o profiles: now ok for mutli-tiles case
625    o seaice: add 4 parameters for different advection schemes for area,
626      (effective) seaice thickness, enthalphy, and snow height. Their default
627      is the standard parameter SEAICEadvScheme
628    o calc_gw:
629     - add cosFacU in zonal viscous flux (harmonic.visc.).
630     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
631       of tutorial_plume_on_slope.
632    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
633    o calc_gw: true flux-form, account for horizontal grid spacing.
634      update rotating_tank results, but not plume_on_slope (affected at
635      truncation level, 11 digits).
636    
637    checkpoint58l_post
638    o calc_gw:
639     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
640     - remove side-drag for now (need to fix it); update plume_on_slope results.
641     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
642    o commit code to make SST/SSS weights spatially variable
643      (based on either variable in-situ or variable initial T/S weights)
644    o pkg/ecco:
645      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
646        now based on horizontally varying weights wthetaLev, wsaltLev
647      * cost_averagesflags now returns year indices in addition to day, month
648      * sflux balance is performed on annual basis
649        (sflxumm, sfluxmm2, bal_sfluxmm)
650      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
651        including separate counting and multipliers
652    o pkg/rbcs
653      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
654    
655    checkpoint58k_post
656    o testreport:
657     - always build in dir. "build" (if not there, mkdir build instead of building
658       & running in input)
659     - run in dir run (if it exists), in build otherwise.
660     - call prepare_run (if input/prepare_run exists)
661     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
662    o pkg/exf modifications to interpolation and rotation routines for more
663       reasonable treatment of North Pole singularity: for tracers North Pole
664       value is set to northernmost zonal-mean value, for zonal velocity it is
665       set to zero, and for meridional velocity it is set to northernmost value.
666    o pkg/exf/exf_check_range.F
667     - add tile index to diagnostics and move stop statement to the very
668       end of the routine.
669    o pkg/diagnostics: (diagnostics_main_init.F)
670      define title of isomorphic variables according to the current config.
671    o pkg/thsice with pkg/seaice dynamics:
672    - fix domain of computation (interior only, required for exf) and do exchanges
673    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
674    o towards a standard way of dealing with multi-threading in MONITOR
675      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
676    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
677       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
678    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
679    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
680    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
681       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
682    o tracer advection:
683     - clean-up and simplify calc_common_factors.F
684     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
685       advection subroutine (but still not used within DST advection S/R)
686    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
687    
688    checkpoint58j_post
689    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
690      from file (collects calls previously in FORWARD_STEP)
691    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
692    o adjoint store dir. adjusted accordingly
693    o genmake2
694      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
695    
696    checkpoint58i_post
697    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
698      on wind stress (SEAICEstressFactor defaults to 1.)
699    o Total number of Timers is finite (<=40): comment out 2 non-essential one
700      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
701    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
702      on CS-grid: no longer loosing mass.
703    o exf & curvilinear-grid: no longer modify longitude xC & xG.
704    o pkg/ggl90: fix sloppy output and fix a bug
705    o pkg/seaice: added SEAICEuseEVPpickup parameter
706      - Set to false in order to start EVP solver with
707        non-EVP pickup files when using SEAICEuseEVP
708      - fix sign error in diffusion in seaice_calc_rhs
709    
710    checkpoint58h_post
711    * Modifications for bottom topography control
712      o replace hFacC by _hFacC at various places
713      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
714      o add non-self-adjoint cg2d_nsa
715      o update autodiff support routines
716      o re-initialise hfac after ctrl_depth_ini
717      o works for 5x5 box, doesnt work for global_ocean.90x40x15
718    * Adding verification for 5x5 box (4-layer) bottom topography control
719    
720    checkpoint58g_post
721    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
722       used for mean seasonal cycle, mean diurnal cycle); add an example
723       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
724    o pkg/ggl90:
725      - add parameter (minimum surface kinetic energy)
726      - fix bug (avoiding division by zero)
727    o couple pkg/thsice to pkg/seaice:
728      - modify advection in seaice to accomodate new scalar fields to be advected
729      - only muliDimAdection scheme work with seaice/thsice
730      - mapping of thsice-variables to seaice-variables, back and forth
731      - does not break the verification experiments, but does not give the
732        desired results either
733    o pkg/seaice
734      - make (default) second order advection a bit less confusing?
735    
736    checkpoint58f_post
737    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
738      to pkg/seaice):
739      - new routines thsice_map_exf and thsice_get_exf provide the interface
740      - add an additional formal parameter to thsice_solve4temp
741    o pkg/exf:
742      - add new fields wspeed, snowprecip (to be able to couple to thsice)
743      - correct Stefan-Boltzmann constant
744      - new parameter for longwave surface emittance
745      - separate some stuff from exf_bulkformulae into new routines  
746        exf_radiation, exf_wind
747      - add new parameters and constants: longwave emissivity for ocean, ice
748        and snow, evaporation parameters over ice
749      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
750        either wind from stress or stress from wind
751    o pkg/thSIce:
752    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
753    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
754       and THSICE_CALC_THICKN
755    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
756    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
757      to make debugging easier.
758    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
759    o pkg/bulk_force:
760      - clean-up comments and parameters ;
761      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
762    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
763      generate new output for test-experiment: aim.5l_cs.thSI
764    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
765      testreport accordingly
766    
767    checkpoint58e_post
768    o SEAICE_CGRID adjoint done
769    o R_STAR adjoint implemented.
770      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
771      * need to sort out init. of h0facc, etc.
772    o Make pkg/profile fully independent of ecco,cost, etc. stuff
773      to be able to use it in pure forward.
774    
775    checkpoint58d_post
776    o upgrade simple test-experiment to tutorial example:
777     step.1: duplicate the experiment and (step.2) will remove the old copy.
778      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
779      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
780      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
781      tutorial_global_oce_biogeo    <- copy of dic_example
782      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
783      tutorial_plume_on_slope       <- copy of plume_on_slope
784      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
785      tutorial_global_oce_optim     <- empty for now (David ?)
786      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
787     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
788    o correct a sign problem in cost_scat.F
789    o obcs and ptracers: fix boundary conditions for advections schemes
790      with larger stencil
791    o thsice adjoint: start
792    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
793      completeness
794    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
795      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
796    o ptracers adjoint:
797      * avoid extensive recomputatations
798      * fix missing re-init. of gptr (missed by TAF)
799    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
800      me to turn off the excessive output to STDOUT that this package produces
801    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
802      and add those terms in Vector-Invariant formulation.
803    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
804      if the control period (xx_hfluxperiod etc) is 0
805    o in profiles pkg, clean routines and fix details
806    o in ecco pkg, reading ssh data:
807      fix problem in case the model does not start at iter0=0
808    o fix mnc-pickup/restart for ptracers
809    o new package prifiles:
810      code to compute profile-based cost by Gael Forget
811      (modifs in ecco, ctrl, autodiff)
812    o Benign bug fix in initialization (spotted by M. Mazloff) of
813      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
814    
815  checkpoint58c_post  checkpoint58c_post
816  o adjoint: finish NLFS adjoint and provide reference output in  o adjoint: finish NLFS adjoint and provide reference output in
817    verification/global_ocean.90x40x15/results_ad_nlfs    verification/global_ocean.90x40x15/results_ad_nlfs

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