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revision 1.618 by jmc, Thu Mar 2 22:52:09 2006 UTC revision 1.885 by jmc, Sat Sep 29 21:37:19 2007 UTC
# Line 4  $Name$ Line 4  $Name$
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    checkpoint59h
8    o pkg/exf:
9      - improve vectorization by moving if-statement out of loops in
10        exf_mapfields, exf_radiation
11      - exf_bulkformulae.F: introduce 2D fields and vectorize code
12    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
13    o testreport:
14      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
15        monitor & update offline_exf_seaice exp. output.
16      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
17    o pkg/seaice:
18      - bug fix in the evp solver: boundary conditions were affected be
19        masking of zMax/zMin (changes results)
20      - minor bug fix in boundary conditions in seaice_calc_strainrates
21        (changes results for no_slip)
22      - seaice_lsr.F: make interpolation of eta dependent on boundaries
23      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
24      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
25        stress formulation and no-slip boundary conditions
26    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
27      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
28    o pkg/seaice: a first HSALT time stepping equation has been checked in
29    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
30      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
31      without requiring DO-IF statements
32    o pkg/thsice:
33      use continuous power-law function for partition of energy between lateral
34      melting/freezing and thinning/thickening ; old code using step function
35      still available with #undef THSICE_FRACEN_POWERLAW
36      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
37    o testreport: change AD testing : check against results/output_adm.txt
38      using same scripts as for forward test.
39    
40    checkpoint59g
41    o adjoint testing: in preparation for changing testreport:
42      - output format: cost and grad written on separated lines
43      - ad output results in directory "results" (instead of "results_ad")
44    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
45    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
46    o pkg/ecco: allow user defined cost function contributions
47    o testreport:
48      Allow to choose (per experiment) the list of tested output variables
49       and the main variable (used to issue a pass/FAIL ) ;
50      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
51      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
52      Also modify printing of summary:
53       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
54       b) echo the list of tested variables in the individual summary.txt of
55          each experiment.
56    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
57      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
58      (but still depend on the tile decompostion of the domain).
59    o pkg/seaice: change a discretization detail to make the B-grid code
60      "more symmetric". This change is likely to remove all "ridges/leads" that
61      where quasi-aligned with the grid in B-grid solutions. It may also be
62      the solution to the stress coupling issues with the B-grid.
63    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
64      remove .cvsignore from input dir. (since testreport no longer run here).
65    o pkg/thsice:
66     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
67     - fix reshaping of sea-ice just after advection:
68       melt all the ice only if ice-volume is too small.
69     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
70       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
71     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
72    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
73      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
74    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
75      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
76      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
77      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
78      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
79      -> update output.txt
80    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
81     this affects truncation error: -> update output.txt of exp:
82      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
83      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
84    
85    checkpoint59f
86    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
87    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
88      a bounded range (in forward mode)
89    o pkg/ecco, ctrl, autodiff and mom_common:
90     internal parameter controls, completements of implementations
91    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
92    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
93      (not seem any difference in testing results).
94    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
95       at face corners.
96    o pkg/generic_advdiff:
97     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
98      loop range indices for computing vertical advection tendency
99      and do the calculation in the interior only (no overlap) ;
100      for now, only implemented for SOM advection (to save CPU time).
101     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
102    o exch2 adjoint
103      First set of changes:
104      - add exch2 hand-written adjoint templates
105      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
106        This will require cleanup in pkg/autodiff/*.F
107        (changed routines currently kept separate in verif. code/)
108      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
109        that used to hide exch2 or cubed-sphere specific code
110        (commented via 'cph-exch2')
111    o pkg/seaice
112      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
113    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
114       output of global_ocean.cs32x15.thsice .
115    
116    checkpoint59e
117    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
118      for B-grid vector (not yet tested) and C-grid vector (<- only used
119      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
120    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
121      (#ifdef ALLOW_SALT_PLUME)
122    o gather_2d/scatter_2d: removed halo regions
123    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
124      scheme and the corresponding test case (under front_relax dir). For now,
125      only available with Skew-flux form and not yet tested in realistic set-up.
126      adjoint: store directives updated, but gradient checks deteriorated,
127      so maybe GM/Redi adjoint is now broken.
128    o seaice adjoint
129      * add AREA, HEFF, HSNOW as control variable
130        (should not change lab_sea results)
131      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
132    o pkg/seaice:
133      * added computation of saltFlux in seaice_growth;
134        For time being, sea ice salinity is assumed constant
135        contribution of snow flooding to freshening of sea ice is neglected.
136        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
137        defaults to 0.0 in order to maintain backward compatibility.
138        Typical values for SEAICE_salinity are 4 to 10 g/kg.
139      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
140      * added SEAICE_availHeatFrac, which specifies fraction of surface level
141        heat content used to melt or grow ice
142      * commented out cap of HICE: it helps keep ice thinner
143      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
144      * applied OBCS T/S mask to HEFFM sea ice mask
145    
146    checkpoint59d
147    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
148     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
149     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
150    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
151     and change default value of parameter "GM_Small_Number";
152     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
153       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
154       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
155    o pkg/ecco: cost function when applying pkg/smooth to controls
156    o pkg/ctrl: add forcingPrecond run time parameter
157    o pkg/seaice:
158     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
159     - fix bug in metric terms of u-equation in LSR solver (implicit part),
160       changes verification/lab_sea
161     - rearrange implicit part of u-equation in LSR solver to make it easier to
162       read, understand, and debug. This causes changes at the truncation level.
163     - fix (serious) bug in the boundary conditions (sign error in the implicit
164       part) of the LSR solver. Changes all LSR results.
165     - fixed problem with HSNOW initialization to avoid thick snow when AREA
166       is initilized with small values - does not change lab_sea results.
167     - added HsnowFile initialization capability
168    o pkg/smooth: addition to model/src and pkg/ctrl so allow
169     initialization of pkg/smooth and application to control vector
170    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
171    o dependencies: pkg/profiles requires pkg/cal
172    o pkg/profiles:
173     - added option ALLOW_PROFILES_GENERICGRID
174         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
175         that interpolation information (grid points and coefficients) is provided
176         within the netcdf input files.
177         -> sample matlab scripts can be found in MITgcm_contrib/gael
178         that allow you to prepare netcdf input files.
179     - also modified: cleaner include statements, cleaner error print statements,
180       cleaner stops when error, and more tests of the netcdf input files consistency.
181    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
182    o pkg/seaice:
183     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
184       requires a new routine: seaice_diagnostics_fill.F
185     - make sure that seaice does not move if not forced (pressure replacement
186       method, Hibler and Ip, 1995), changes results
187     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
188     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
189       It is turned off by default (=-1.), because it changes the results.
190     - make it possible to read AREA from a file, too.
191    
192    checkpoint59c
193    o add S/R and diagnostics for oceanic mixed-layer depth
194    o move GMRedi call after all vertical mixing schemes (including KPP)
195    o pkg/thsice:
196     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
197      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
198    o pkg/obcs:
199     - bug fix for balance code
200    o pkg/seaice:
201      - allow values of SEAICE_elasticParm > 1
202      - add new parameter SEAICE_evpTauRelax as an alternative
203        to SEAICE_elasticParm
204      - make lsr boundary conditions free slip (by default), changes result
205      - add code for no slip boundary conditions for lsr
206      - set minimum of zeta to zero (and not 4e8) (changes results)
207      - add a cap on AREA after advecting AREA if seaice_growth is not called
208    o change calculation of Visbeck K:
209      - no longer depend on tapering scheme; instead, compute slope (limited
210        by GM_maxSlope). this is equivalent to what was comuted before with
211        clipping or linear tappering.
212      - fix vertical averaging (wrong by 1/2 level)
213      - leave the old version (but will not be maintained) within
214        #ifdef OLD_VISBECK_CALC / #endif
215      - update output of exp. ideal_2D_oce
216    o change error catch in calc_r_star to improve vectorization
217    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
218      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
219    o adjoint:
220      Re-organized adjoint checkpointing according to Matt Mazloff
221      (but with modifs/completions/cleanups)
222      Storing is now bundled into large arrays to optimized I/O
223      (and second step in cleanup of the_main_loop)
224    
225    checkpoint59b
226    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
227      - export/import (between ocean & coupler) fields needed for ocean DIC.
228    o pkg/seaice:
229      - get rid of three more exchanges seaice_calc_viscosities (required
230        different loop boundaries in seaice_lsr and seaice_ocean_stress)
231      - bug fix in seaice_ocean_stress (update of lab_sea required)
232      - reduce loop boundaries to necessary minimum also in seaice_evp
233      - go back to the old way of computing deltaC/Z as the adjoint likes that
234        better
235    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
236      passive tracer to an Age Tracer) + update output.txt
237    o pkg/exf:
238      - implement A-grid / C-grid selection for wind-stress input files.
239      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
240      for now, in exf_bulk_largeyeager04.F only :
241      - change implementation for case where windspeed + 2. components wind-stress
242        are read-in. AND use rhoConstFresh to convert evap.
243    o pkg/seaice:
244      - use correct EXCH_UV for wind-forcing (on A-grid).
245      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
246        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
247    o pkg/exf:
248      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
249      EXF_INTERPOLATION:
250      - merge global_with_exf/code version of exf_interp_read.F
251        to the main code ;
252      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
253        reading the file ; Important: This options needs to be defined to recover
254        previous code.
255        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
256      - no longer loose real*8 precision along the way when using exf_iprec=64.
257    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
258      - change discretisation of evp-solver in order to avoid another exchange
259        (changes lab_sea) and clean up a little
260      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
261        help the adjoint (this also changes the results slightly)
262      - add a few "_d 0" where they had been missing in seaice_evp.F
263      - cleaning up: remove unused seaice_calc_rhs.F
264    o pkg/exf: some cleaning-up:
265      - change various "constants" into runtime parameters
266      - cleaned-up Large&Yeager04 routine which should eventually
267        replace exf_bulkformulae.F (changed names of S/R and CPP)
268        and merged various ALLOW_ATM_WIND options
269     only used with thsice pkg (in thsice_get_exf.F):
270      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
271        which are used when useStabilityFct_overIce=TRUE (= the default)
272      - change default values of ice & snow emissivity and scale downward LW
273        by ice & snow emissivity.
274    o pkg/thsice:
275     fix few little problems, in thsice_calc_thickn.F:
276      - growth vertically (and not laterally) if iceFrac == iceMaskMax
277      - melt only laterally if hIce < hThinIce (as the comments say)
278      and in thsice_extend.F:
279      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
280      - start to form ice as soon as the minimum ice-volume is reachable.
281     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
282      and cpl_aim+ocn
283    o pkg/kpp
284     - move computation of surface related input fields to KPP into a new
285       subroutine kpp_forcing_surf.F
286     - remove wrong (within bi,bj loops) EXCH calls.
287     - little cleaning (add argument myThid in last position, cvs header ...)
288     - for now, fix conservation problem by exchanging KPPviscAz (may not
289       be the best fix)
290    o pkg/seaice
291     - check for inconsistent evp parameter/cpp-flag combination
292     - remove leftover errIO flat for obsolete name list error handling
293    o OpenAD
294     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
295    
296    checkpoint59a
297    o pkg/seaice: some parameter clarifications and a little bit of clean up
298    o pkg/thsice: rename run-time parameters:
299       himin       -> hIceMin
300       himin0      -> hThinIce
301       hihig       -> hThickIce
302       i0          -> i0swFrac
303       transCoef   -> bMeltCoef
304       frac_energy -> fracMelting
305      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
306       with default values (for now) that do not change the results.
307      remove old version of thsice vars advection in pkg/seaice.
308    o in FFIELDS.h:
309      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
310      - make pLoad & sIceLoad always available (but still only used if
311         ATMOSPHERIC_LOADING is #define).
312    o pkg/kpp: replaced _KPP_RL with _RL
313    o bug fixes for vertical diffusivity computations when both KPP and
314        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
315        are no longer updating the vertical diffusivity array
316        (passed as argument) but are (re-) setting those arrays.
317    o pkg/seaice: fix bug in evp solver, while doing that
318      - change (improve?) discretization of stress computations for both
319        cgrid-lsr and evp solver
320      - add a new routine to compute strain rates
321      - the above changes lab_sea results
322      - add no slip conditions for evp solver (off by default), lsr-version
323        may follow
324      - fix exchange for shear at Z-points (does not change lab_sea)
325      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
326        (to force the user to pick a time step since there is not "safe" way
327        of choosing it)
328      - add principal stress diagnostics
329      - rearrange fields for evp a little to avoid having to call a: too many
330        exchanges and b: exchanges for stress trensor components which we do
331        not have.
332      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
333        of evp, complete rewrite for lsr case (latter is does not yet work
334        in all cases)
335    o pkg/kpp: add code to have mixing in shelf ice caverns
336      - add myThid to all kpp routines (long overdue)
337    
338    checkpoint59
339    o pkg/exf:
340      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
341        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
342      - move exf header files from lower_case.h to UPPER_CASE.h ;
343        add missing cvs Header & Name
344      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
345      - add namelist param. selectStressGridPosition, exf_monFreq
346      - retire many _CLIM routines, and remove data.exf_clim
347        + params moved to data.exf
348        + climsst, climsss now handled by exf_set_gen, i.e.
349          climss?period=0 refers to constant field,
350          climss?period=-12 to monthly forcing
351      - split up namelists in data.exf
352    o pkg/seaice:
353      - remove seaice_exch and seaice_exch_uv
354      - remove superfluous exchange of theta
355      - add myThid to seaice_budget_ocean/ice
356      - add new interface for atmospheric wind forcing (C-grid only)
357        + new routine
358        + two new field (taux, tauy for stress over ice)
359        + removed one global field (DAIRN) for C-grid case only
360    o pkg/thsise
361      - 2nd set of modifs for thsice adjoint in conjunction with exf
362    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
363    
364    checkpoint58y_post
365    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
366      vertical diffusivity, similar to that in MOM4; turned on using
367      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
368      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
369    o Added capability for 3D specification of background vertical diffusion
370      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
371      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
372      "data" file that contains the 3D vertical diffusivity coefficients.
373    o ice dynamics (pkg/seaice) with thsice thermodynamics:
374      - add code within pkg thsice to advect & diffuse sea-ice fields
375      similar to (and will replace) what has been added in  seaice_advdiff.F,
376      but: - conserving Mass, Heat & Salt.
377           - better when using non-linear advection scheme (not yet fully tested)
378           - can also be used in atmospheric set-up (for now, only the diffusion).
379    
380    checkpoint58x_post
381    o IO option for global-file compact format:
382      - add options when generating topology (utils/exch2/matlab-topology-generator)
383      - add I/O capability (pkg/mdsio).
384      - adapt utils/matlab/rdmds.m to read this format.
385      for now long-line format not yet supported by pkg/mdsio (& exch2).
386    o shelfice: add a few diagnostics
387    
388    checkpoint58w_post
389    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
390      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
391      (and replace horiVertRatio in NH code).
392      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
393                         and tutorial_plume_on_slope (sensitive to truncation)
394    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
395      directly to drive seaice model (C-grid only)
396    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
397     - reintroduce computation of wind from stress,
398     - compute tau (in exf_bulkformulae.F) from windstress averaged to
399       mass points to avoid tau = 0
400     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
401    o rdmnc.m: make it work with "global" files created with gluemnc
402    o rdmnc.m : some improvements in dealing with singleton dimension
403      (tested on all testreport mnc output files).
404    o genmake2: disable pkg/profiles if netcdf test fails.
405    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
406    o move call to cal_readparms up to make calendar parameters/variable available
407      to all packages
408    
409    checkpoint58v_post
410    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
411      useDynP_inEos_Zc tested.
412    o pkg/exf: changes to properly interpolate/mask/scale initial fields
413    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
414      and portions thereof.  See read_cs.txt for description and examples.
415    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
416      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
417      following the great-circle arc between those 2 points.
418    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
419      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
420    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
421     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
422     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
423     - still needs work (not working with some options ; efficiency to improve)
424       and serious testing.
425     - use this scheme for temperature & salinity in 2 advection test exp.:
426       advect_xy & advect_xz, respectively.
427    
428    checkpoint58u_post
429    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
430    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
431    o testreport: add option "-skipdir" to skip some test.
432    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
433      momentum calculation.
434    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
435    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
436      remove checkpoint.F and the_correction_step.F (no longer used);
437      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
438    o add option (linFSConserveTr) to correct for tracer source/sink due to
439      Linear Free surface
440    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
441    o pkg/thsice: fix reading mnc-pickups
442    
443    checkpoint58t_post
444    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
445    o pkg/mdsio:
446     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
447       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
448       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
449     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
450     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
451       either MDS_READ_FIELD or MDS_WRITE_FIELD )
452     - new S/R (to replace MDSWRITEMETA), which allows to write more
453       informations (variable names, time ...) to meta files.
454     - modify rdmds.m to give back the meta file content.
455    o pkg/diagnostics: change vertical interpolation to be safer, and more
456       flexible (define p-levels to interpolate to in data.diagnostics);
457      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
458       diagnostic pointer.
459    o pkg/seaice: more cleaning up of seaice_growth, added many comments
460    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
461    o fix multi-category seaice:
462     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
463       SEAICE_MULTICATEGORY
464     - fix short wave heat flux
465    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
466       and allow to use EVP solver. Change forward lab_sea: test both EVP
467       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
468    o Initial check-in of lab_sea adjoint
469      (very similar to natl_box_adjoint/code_seaice)
470      * used C-grid and EVP solver
471      * used KPP, GM/Redi
472      * uses inAdExact=.TRUE.
473      * gradient checks fail for both ADM and TLM
474        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
475        f.d. gradients actually seem more problematic than ADM, TLM gradients;
476        issue is related to forward mismatch between g77 an ifort
477    o pkg/seaice: overhaul of thermodynamics
478     - growth.F and groatb.F are replaced by new routine seaice_growth.F
479     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
480     - move a few global fields out of SEAICE.h into seaice_growth.F and
481       make them 2D (FICE/QNETO/ ...)
482     - remove FO (it is the same as QNETO)
483     - introduce a few local fields to avoid modifying external fields such
484       as atemp, etc.
485    
486    checkpoint58s_post
487    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
488      changed exf_set_gen.F so that
489        genperiod=0 means input file is one time-constant field and
490        genperiod=-12 means input file contains 12 monthly means
491    o CG2D: use pre-computed solver main-diagonal (stored in common block);
492      this affects truncation error ; generate new output file for exp. which
493      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
494        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
495        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
496        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
497        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
498        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
499    o start implementation of deep-atmosphere and anelastic formulation
500    o verification: remove 2nd copy of input files and use script "prepare_run"
501      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
502    o mom_common/vecinv/fluxform: fix a few initialisation isssues
503    o profiles: fix for multithreaded case
504    
505    o diagnostics: rename few diags:
506      s/'PRESSURE'/'RCENTER '/g
507      s/'TICE    '/'oceFreez'/g
508      s/'TAUX    '/'oceTAUX '/g
509      s/'TAUY    '/'oceTAUY '/g
510      s/'SWFLUX  '/'oceQsw  '/g
511      s/DIFx/DFxE/g
512      s/DIFy/DFyE/g
513      and add few ocean-forcing diagnostics:
514      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
515    o modifications to pkg/seaice/growth.F and budget.F, which change results of
516      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
517      as actual snow thickness.  It now refers everywhere to effective snow
518      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
519    
520    checkpoint58r_post
521    o modifications to pkg/seaice/growth.F, which change results of
522      lab_sea experiment: fixes pertain to melting snow over open water, to
523      masking EVAP under sea ice, and to using the correct AREA variable for
524      computations of EVAP, PRECIP, HSNOW, and GHEFF
525    o add ability to read bathy, salt, and theta using MNC (off by def)
526    o add flooding algorithm and advection of HSNOW for pkg/seaice;
527      both are turned off by default and do no change any results
528    o seaice advection with pkg/thsice: a step toward the use of non-linear
529      advection scheme, but #ifdef or commented out for now (requires more EXCH).
530    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
531      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
532      in natl_box (affects results @ truncation level: update output.txt)
533    o multi-threading and IO:
534      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
535      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
536        (needed to work with SingleCpuIO): tested in all verif. exp.
537    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
538      affects the results (but none of the verification test uses this scheme).
539    o Adding some pkg/diagnostics capability to pkg/seaice
540      (will certainly be subject to changes)
541    o ctrl: adding new control variables:
542      lwflux, lwdown, evap, snowprecip, apressure, runoff
543    
544    checkpoint58q_post
545    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
546      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
547      high_res_cube configuration by 4% on Columbia.
548    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
549      add (in global_with_exf/code) a version of EXF_INTERP_READ without
550      dynamical allocation (seems to work in multi-threaded).
551    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
552      single CPU io) so that TAF does not have to see EESUPPORT.h
553    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
554    
555    checkpoint58p_post
556    o obcs: stop if obcs is used with useCDscheme = .true.
557    o shelfice:
558     - fix a sign error so that no slip at shelfice interface works
559     - remove stop for combination non-hydrostatic code and shelfice. That does
560       not mean, that the results are correct, but at least they are numerically
561       stable
562    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
563    o added adjoint exch routined for all exch*3d* routines
564      and updated flow directives
565    
566    checkpoint58o_post
567    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
568      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
569    o change controling S/R for writing pickup file (new S/R do_write_pickup)
570      and clean-up reading/writing of pickup files.
571    o fix local version of read/write pickup (NH part) in rotating_tank/code
572    o simplify EXCH interface:
573     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
574     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
575    o added the regrid package
576    o shelfice:
577     - add a simple boundary layer scheme to reduce noise
578     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
579    
580    checkpoint58n_post
581    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
582       local variable (not in common block).
583    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
584      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
585      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
586        to work with SingleCpuIO.
587    o add "_d 0" to real constant of pkg/cfc subroutines ;
588       update exp. cfc_exemple & tutorial_cfc_offline output files.
589    o multi-threading and IO:
590      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
591        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
592      - barrier before and after reading.
593      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
594      - avoid using MDS_WRITELOCAL for LAND pkg output.
595      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
596        common-block variables ; Allows multi-threading with master-thread IO.
597    o change default MAX_NO_THREADS from 32 to 4 ;
598      and stop cleanly when MAX_NO_THREADS is too small.
599    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
600    
601    checkpoint58m_post
602    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
603       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
604    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
605       keep global_ocean.90x40x15 (for AD testing) with former secondary test
606       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
607    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
608        add MITgcm_tutorials (= code + all the tutorials)
609    o ecco, option to compute cost for total ssh (mean+anom)
610    o consistent with addition of ptracer and ssh in pkg/profiles
611    o profiles: adding ptracer and ssh
612    o testreport: change multi-test output-file name
613      (from output.txt.{name} to output.{name}.txt)
614    o profiles: now ok for mutli-tiles case
615    o seaice: add 4 parameters for different advection schemes for area,
616      (effective) seaice thickness, enthalphy, and snow height. Their default
617      is the standard parameter SEAICEadvScheme
618    o calc_gw:
619     - add cosFacU in zonal viscous flux (harmonic.visc.).
620     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
621       of tutorial_plume_on_slope.
622    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
623    o calc_gw: true flux-form, account for horizontal grid spacing.
624      update rotating_tank results, but not plume_on_slope (affected at
625      truncation level, 11 digits).
626    
627    checkpoint58l_post
628    o calc_gw:
629     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
630     - remove side-drag for now (need to fix it); update plume_on_slope results.
631     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
632    o commit code to make SST/SSS weights spatially variable
633      (based on either variable in-situ or variable initial T/S weights)
634    o pkg/ecco:
635      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
636        now based on horizontally varying weights wthetaLev, wsaltLev
637      * cost_averagesflags now returns year indices in addition to day, month
638      * sflux balance is performed on annual basis
639        (sflxumm, sfluxmm2, bal_sfluxmm)
640      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
641        including separate counting and multipliers
642    o pkg/rbcs
643      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
644    
645    checkpoint58k_post
646    o testreport:
647     - always build in dir. "build" (if not there, mkdir build instead of building
648       & running in input)
649     - run in dir run (if it exists), in build otherwise.
650     - call prepare_run (if input/prepare_run exists)
651     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
652    o pkg/exf modifications to interpolation and rotation routines for more
653       reasonable treatment of North Pole singularity: for tracers North Pole
654       value is set to northernmost zonal-mean value, for zonal velocity it is
655       set to zero, and for meridional velocity it is set to northernmost value.
656    o pkg/exf/exf_check_range.F
657     - add tile index to diagnostics and move stop statement to the very
658       end of the routine.
659    o pkg/diagnostics: (diagnostics_main_init.F)
660      define title of isomorphic variables according to the current config.
661    o pkg/thsice with pkg/seaice dynamics:
662    - fix domain of computation (interior only, required for exf) and do exchanges
663    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
664    o towards a standard way of dealing with multi-threading in MONITOR
665      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
666    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
667       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
668    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
669    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
670    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
671       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
672    o tracer advection:
673     - clean-up and simplify calc_common_factors.F
674     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
675       advection subroutine (but still not used within DST advection S/R)
676    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
677    
678    checkpoint58j_post
679    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
680      from file (collects calls previously in FORWARD_STEP)
681    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
682    o adjoint store dir. adjusted accordingly
683    o genmake2
684      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
685    
686    checkpoint58i_post
687    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
688      on wind stress (SEAICEstressFactor defaults to 1.)
689    o Total number of Timers is finite (<=40): comment out 2 non-essential one
690      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
691    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
692      on CS-grid: no longer loosing mass.
693    o exf & curvilinear-grid: no longer modify longitude xC & xG.
694    o pkg/ggl90: fix sloppy output and fix a bug
695    o pkg/seaice: added SEAICEuseEVPpickup parameter
696      - Set to false in order to start EVP solver with
697        non-EVP pickup files when using SEAICEuseEVP
698      - fix sign error in diffusion in seaice_calc_rhs
699    
700    checkpoint58h_post
701    * Modifications for bottom topography control
702      o replace hFacC by _hFacC at various places
703      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
704      o add non-self-adjoint cg2d_nsa
705      o update autodiff support routines
706      o re-initialise hfac after ctrl_depth_ini
707      o works for 5x5 box, doesnt work for global_ocean.90x40x15
708    * Adding verification for 5x5 box (4-layer) bottom topography control
709    
710    checkpoint58g_post
711    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
712       used for mean seasonal cycle, mean diurnal cycle); add an example
713       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
714    o pkg/ggl90:
715      - add parameter (minimum surface kinetic energy)
716      - fix bug (avoiding division by zero)
717    o couple pkg/thsice to pkg/seaice:
718      - modify advection in seaice to accomodate new scalar fields to be advected
719      - only muliDimAdection scheme work with seaice/thsice
720      - mapping of thsice-variables to seaice-variables, back and forth
721      - does not break the verification experiments, but does not give the
722        desired results either
723    o pkg/seaice
724      - make (default) second order advection a bit less confusing?
725    
726    checkpoint58f_post
727    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
728      to pkg/seaice):
729      - new routines thsice_map_exf and thsice_get_exf provide the interface
730      - add an additional formal parameter to thsice_solve4temp
731    o pkg/exf:
732      - add new fields wspeed, snowprecip (to be able to couple to thsice)
733      - correct Stefan-Boltzmann constant
734      - new parameter for longwave surface emittance
735      - separate some stuff from exf_bulkformulae into new routines  
736        exf_radiation, exf_wind
737      - add new parameters and constants: longwave emissivity for ocean, ice
738        and snow, evaporation parameters over ice
739      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
740        either wind from stress or stress from wind
741    o pkg/thSIce:
742    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
743    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
744       and THSICE_CALC_THICKN
745    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
746    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
747      to make debugging easier.
748    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
749    o pkg/bulk_force:
750      - clean-up comments and parameters ;
751      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
752    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
753      generate new output for test-experiment: aim.5l_cs.thSI
754    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
755      testreport accordingly
756    
757    checkpoint58e_post
758    o SEAICE_CGRID adjoint done
759    o R_STAR adjoint implemented.
760      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
761      * need to sort out init. of h0facc, etc.
762    o Make pkg/profile fully independent of ecco,cost, etc. stuff
763      to be able to use it in pure forward.
764    
765    checkpoint58d_post
766    o upgrade simple test-experiment to tutorial example:
767     step.1: duplicate the experiment and (step.2) will remove the old copy.
768      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
769      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
770      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
771      tutorial_global_oce_biogeo    <- copy of dic_example
772      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
773      tutorial_plume_on_slope       <- copy of plume_on_slope
774      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
775      tutorial_global_oce_optim     <- empty for now (David ?)
776      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
777     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
778    o correct a sign problem in cost_scat.F
779    o obcs and ptracers: fix boundary conditions for advections schemes
780      with larger stencil
781    o thsice adjoint: start
782    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
783      completeness
784    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
785      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
786    o ptracers adjoint:
787      * avoid extensive recomputatations
788      * fix missing re-init. of gptr (missed by TAF)
789    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
790      me to turn off the excessive output to STDOUT that this package produces
791    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
792      and add those terms in Vector-Invariant formulation.
793    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
794      if the control period (xx_hfluxperiod etc) is 0
795    o in profiles pkg, clean routines and fix details
796    o in ecco pkg, reading ssh data:
797      fix problem in case the model does not start at iter0=0
798    o fix mnc-pickup/restart for ptracers
799    o new package prifiles:
800      code to compute profile-based cost by Gael Forget
801      (modifs in ecco, ctrl, autodiff)
802    o Benign bug fix in initialization (spotted by M. Mazloff) of
803      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
804    
805    checkpoint58c_post
806    o adjoint: finish NLFS adjoint and provide reference output in
807      verification/global_ocean.90x40x15/results_ad_nlfs
808    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
809      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
810      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
811      with SEAICE_CGRID defined.
812    o move calendarDumps from "data" to "data.cal" and clean-up the code
813      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
814    o add useEXF & useCAL flags (for now, set in hard-coded way)
815    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
816      (were missing in NH mode, and wrong in quasihydrostatic mode).
817      waiting for Chris updated version of calc_gw to add those CALLs.
818    o fix bug in quasihydrostatic S/R ;
819      add a test for this option: global_ocean.90x40x15.qshyd
820    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
821      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
822    o add on/off flag useOffLine for package OFFLINE
823    o seaice:
824      - modify advection so that it works also on the C-grid
825      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
826        problem in multi-tile runs with C-grid
827      - add flags for clipping ice velocities and/or masking solver forcing
828      - fix drag (ocean on ice) formulation and a bug that caused noise in the
829        C-grid solver
830      - added a few comments to seaice_diffusion.F
831      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
832        are now exclusive)
833      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
834        required re-ordering the code a little:
835       + make DAIRN global variable (defined in SEAICE)
836       + move computation of the viscosities eta and zeta into a new separate
837         routine (because I need to recompute them in seaice_ocean_stress.F)
838    
839    checkpoint58b_post
840    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
841      update output.txt of exp. aim.5l_cs.thSI
842    o various mnc cleanups and improvements:
843      + shrink lookup tables by factor of ~4
844      + better error reporting when running out of lookup space
845      + able to handle longer path/file names (up to 500 chars)
846    o adjoint:
847      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
848      - TBD: "hidden" mom_vecinv recomp. in dynamics
849    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
850     (allow to differentiate between forcing components using new integer flags:
851      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
852     and add new flag to put Dissipation tendency out of Adams-Bashforth.
853    o ecco
854      - enable trend removal from SSH anomaly obs.
855    o adjoint
856      - a fix for PmEpR when #undef EXACT_CONSERV
857      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
858      - try to fix "hidden" recomp. in forward_step for NLFS
859        (NLFS seems broken sometimes after I checked it in)
860    o seaice:
861     - add c-grid version of the dynamic solver:
862       + three new routines that are the c-grid substitute lsr, dynsolver
863         and ostres
864       + put a few fields that were local to dynsolver into global common
865         blocks, so that I can move the computation of stresses etc into
866         seaice_lsr (saves coding but may break the adjoint).
867     - replace more hardwired parameters by runtime parameters
868     - add ice masks that mask the rhs of the implicit solvers where there
869       is no ice (commented out in seaice_dynsolver, because i am not sure
870       if this works properly), eventually this should replace the clipping
871       of ice velocities in seaice_dynsolver to +/-40cm/s.
872    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
873      include it only where its needed
874    o move balancing of fluxes before the call of external_forcing_surf
875    o seaice:
876      - correct units of turning angles (now they are really in degrees)
877      - move computation of GWATX/Y out of main routine into dynsolver
878      - initialize GWATX/Y in seaice_init
879  o Apply mask on Fresh-Water flux (needed for SSH forcing).  o Apply mask on Fresh-Water flux (needed for SSH forcing).
880    update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)    update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
881  o seaice: add runtime flags for turning angles (default to zero)  o seaice: add runtime flags for turning angles (default to zero)
882  o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean  o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
883    and trend from exf forcing and ctrl control adjustments    and trend from exf forcing and ctrl control adjustments

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