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revision 1.618 by jmc, Thu Mar 2 22:52:09 2006 UTC revision 1.884 by mlosch, Fri Sep 28 07:46:13 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 pkg/exf:
8      - improve vectorization by moving if-statement out of loops in
9        exf_mapfields, exf_radiation
10      - exf_bulkformulae.F: introduce 2D fields and vectorize code
11    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
12    o testreport:
13      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
14        monitor & update offline_exf_seaice exp. output.
15      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
16    o pkg/seaice:
17      - bug fix in the evp solver: boundary conditions were affected be
18        masking of zMax/zMin (changes results)
19      - minor bug fix in boundary conditions in seaice_calc_strainrates
20        (changes results for no_slip)
21      - seaice_lsr.F: make interpolation of eta dependent on boundaries
22      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
23      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
24        stress formulation and no-slip boundary conditions
25    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
26      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
27    o pkg/seaice: a first HSALT time stepping equation has been checked in
28    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
29      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
30      without requiring DO-IF statements
31    o pkg/thsice:
32      use continuous power-law function for partition of energy between lateral
33      melting/freezing and thinning/thickening ; old code using step function
34      still available with #undef THSICE_FRACEN_POWERLAW
35      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
36    o testreport: change AD testing : check against results/output_adm.txt
37      using same scripts as for forward test.
38    
39    checkpoint59g
40    o adjoint testing: in preparation for changing testreport:
41      - output format: cost and grad written on separated lines
42      - ad output results in directory "results" (instead of "results_ad")
43    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
44    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
45    o pkg/ecco: allow user defined cost function contributions
46    o testreport:
47      Allow to choose (per experiment) the list of tested output variables
48       and the main variable (used to issue a pass/FAIL ) ;
49      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
50      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
51      Also modify printing of summary:
52       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
53       b) echo the list of tested variables in the individual summary.txt of
54          each experiment.
55    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
56      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
57      (but still depend on the tile decompostion of the domain).
58    o pkg/seaice: change a discretization detail to make the B-grid code
59      "more symmetric". This change is likely to remove all "ridges/leads" that
60      where quasi-aligned with the grid in B-grid solutions. It may also be
61      the solution to the stress coupling issues with the B-grid.
62    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
63      remove .cvsignore from input dir. (since testreport no longer run here).
64    o pkg/thsice:
65     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
66     - fix reshaping of sea-ice just after advection:
67       melt all the ice only if ice-volume is too small.
68     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
69       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
70     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
71    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
72      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
73    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
74      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
75      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
76      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
77      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
78      -> update output.txt
79    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
80     this affects truncation error: -> update output.txt of exp:
81      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
82      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
83    
84    checkpoint59f
85    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
86    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
87      a bounded range (in forward mode)
88    o pkg/ecco, ctrl, autodiff and mom_common:
89     internal parameter controls, completements of implementations
90    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
91    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
92      (not seem any difference in testing results).
93    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
94       at face corners.
95    o pkg/generic_advdiff:
96     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
97      loop range indices for computing vertical advection tendency
98      and do the calculation in the interior only (no overlap) ;
99      for now, only implemented for SOM advection (to save CPU time).
100     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
101    o exch2 adjoint
102      First set of changes:
103      - add exch2 hand-written adjoint templates
104      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
105        This will require cleanup in pkg/autodiff/*.F
106        (changed routines currently kept separate in verif. code/)
107      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
108        that used to hide exch2 or cubed-sphere specific code
109        (commented via 'cph-exch2')
110    o pkg/seaice
111      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
112    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
113       output of global_ocean.cs32x15.thsice .
114    
115    checkpoint59e
116    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
117      for B-grid vector (not yet tested) and C-grid vector (<- only used
118      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
119    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
120      (#ifdef ALLOW_SALT_PLUME)
121    o gather_2d/scatter_2d: removed halo regions
122    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
123      scheme and the corresponding test case (under front_relax dir). For now,
124      only available with Skew-flux form and not yet tested in realistic set-up.
125      adjoint: store directives updated, but gradient checks deteriorated,
126      so maybe GM/Redi adjoint is now broken.
127    o seaice adjoint
128      * add AREA, HEFF, HSNOW as control variable
129        (should not change lab_sea results)
130      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
131    o pkg/seaice:
132      * added computation of saltFlux in seaice_growth;
133        For time being, sea ice salinity is assumed constant
134        contribution of snow flooding to freshening of sea ice is neglected.
135        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
136        defaults to 0.0 in order to maintain backward compatibility.
137        Typical values for SEAICE_salinity are 4 to 10 g/kg.
138      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
139      * added SEAICE_availHeatFrac, which specifies fraction of surface level
140        heat content used to melt or grow ice
141      * commented out cap of HICE: it helps keep ice thinner
142      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
143      * applied OBCS T/S mask to HEFFM sea ice mask
144    
145    checkpoint59d
146    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
147     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
148     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
149    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
150     and change default value of parameter "GM_Small_Number";
151     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
152       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
153       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
154    o pkg/ecco: cost function when applying pkg/smooth to controls
155    o pkg/ctrl: add forcingPrecond run time parameter
156    o pkg/seaice:
157     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
158     - fix bug in metric terms of u-equation in LSR solver (implicit part),
159       changes verification/lab_sea
160     - rearrange implicit part of u-equation in LSR solver to make it easier to
161       read, understand, and debug. This causes changes at the truncation level.
162     - fix (serious) bug in the boundary conditions (sign error in the implicit
163       part) of the LSR solver. Changes all LSR results.
164     - fixed problem with HSNOW initialization to avoid thick snow when AREA
165       is initilized with small values - does not change lab_sea results.
166     - added HsnowFile initialization capability
167    o pkg/smooth: addition to model/src and pkg/ctrl so allow
168     initialization of pkg/smooth and application to control vector
169    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
170    o dependencies: pkg/profiles requires pkg/cal
171    o pkg/profiles:
172     - added option ALLOW_PROFILES_GENERICGRID
173         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
174         that interpolation information (grid points and coefficients) is provided
175         within the netcdf input files.
176         -> sample matlab scripts can be found in MITgcm_contrib/gael
177         that allow you to prepare netcdf input files.
178     - also modified: cleaner include statements, cleaner error print statements,
179       cleaner stops when error, and more tests of the netcdf input files consistency.
180    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
181    o pkg/seaice:
182     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
183       requires a new routine: seaice_diagnostics_fill.F
184     - make sure that seaice does not move if not forced (pressure replacement
185       method, Hibler and Ip, 1995), changes results
186     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
187     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
188       It is turned off by default (=-1.), because it changes the results.
189     - make it possible to read AREA from a file, too.
190    
191    checkpoint59c
192    o add S/R and diagnostics for oceanic mixed-layer depth
193    o move GMRedi call after all vertical mixing schemes (including KPP)
194    o pkg/thsice:
195     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
196      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
197    o pkg/obcs:
198     - bug fix for balance code
199    o pkg/seaice:
200      - allow values of SEAICE_elasticParm > 1
201      - add new parameter SEAICE_evpTauRelax as an alternative
202        to SEAICE_elasticParm
203      - make lsr boundary conditions free slip (by default), changes result
204      - add code for no slip boundary conditions for lsr
205      - set minimum of zeta to zero (and not 4e8) (changes results)
206      - add a cap on AREA after advecting AREA if seaice_growth is not called
207    o change calculation of Visbeck K:
208      - no longer depend on tapering scheme; instead, compute slope (limited
209        by GM_maxSlope). this is equivalent to what was comuted before with
210        clipping or linear tappering.
211      - fix vertical averaging (wrong by 1/2 level)
212      - leave the old version (but will not be maintained) within
213        #ifdef OLD_VISBECK_CALC / #endif
214      - update output of exp. ideal_2D_oce
215    o change error catch in calc_r_star to improve vectorization
216    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
217      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
218    o adjoint:
219      Re-organized adjoint checkpointing according to Matt Mazloff
220      (but with modifs/completions/cleanups)
221      Storing is now bundled into large arrays to optimized I/O
222      (and second step in cleanup of the_main_loop)
223    
224    checkpoint59b
225    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
226      - export/import (between ocean & coupler) fields needed for ocean DIC.
227    o pkg/seaice:
228      - get rid of three more exchanges seaice_calc_viscosities (required
229        different loop boundaries in seaice_lsr and seaice_ocean_stress)
230      - bug fix in seaice_ocean_stress (update of lab_sea required)
231      - reduce loop boundaries to necessary minimum also in seaice_evp
232      - go back to the old way of computing deltaC/Z as the adjoint likes that
233        better
234    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
235      passive tracer to an Age Tracer) + update output.txt
236    o pkg/exf:
237      - implement A-grid / C-grid selection for wind-stress input files.
238      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
239      for now, in exf_bulk_largeyeager04.F only :
240      - change implementation for case where windspeed + 2. components wind-stress
241        are read-in. AND use rhoConstFresh to convert evap.
242    o pkg/seaice:
243      - use correct EXCH_UV for wind-forcing (on A-grid).
244      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
245        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
246    o pkg/exf:
247      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
248      EXF_INTERPOLATION:
249      - merge global_with_exf/code version of exf_interp_read.F
250        to the main code ;
251      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
252        reading the file ; Important: This options needs to be defined to recover
253        previous code.
254        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
255      - no longer loose real*8 precision along the way when using exf_iprec=64.
256    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
257      - change discretisation of evp-solver in order to avoid another exchange
258        (changes lab_sea) and clean up a little
259      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
260        help the adjoint (this also changes the results slightly)
261      - add a few "_d 0" where they had been missing in seaice_evp.F
262      - cleaning up: remove unused seaice_calc_rhs.F
263    o pkg/exf: some cleaning-up:
264      - change various "constants" into runtime parameters
265      - cleaned-up Large&Yeager04 routine which should eventually
266        replace exf_bulkformulae.F (changed names of S/R and CPP)
267        and merged various ALLOW_ATM_WIND options
268     only used with thsice pkg (in thsice_get_exf.F):
269      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
270        which are used when useStabilityFct_overIce=TRUE (= the default)
271      - change default values of ice & snow emissivity and scale downward LW
272        by ice & snow emissivity.
273    o pkg/thsice:
274     fix few little problems, in thsice_calc_thickn.F:
275      - growth vertically (and not laterally) if iceFrac == iceMaskMax
276      - melt only laterally if hIce < hThinIce (as the comments say)
277      and in thsice_extend.F:
278      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
279      - start to form ice as soon as the minimum ice-volume is reachable.
280     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
281      and cpl_aim+ocn
282    o pkg/kpp
283     - move computation of surface related input fields to KPP into a new
284       subroutine kpp_forcing_surf.F
285     - remove wrong (within bi,bj loops) EXCH calls.
286     - little cleaning (add argument myThid in last position, cvs header ...)
287     - for now, fix conservation problem by exchanging KPPviscAz (may not
288       be the best fix)
289    o pkg/seaice
290     - check for inconsistent evp parameter/cpp-flag combination
291     - remove leftover errIO flat for obsolete name list error handling
292    o OpenAD
293     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
294    
295    checkpoint59a
296    o pkg/seaice: some parameter clarifications and a little bit of clean up
297    o pkg/thsice: rename run-time parameters:
298       himin       -> hIceMin
299       himin0      -> hThinIce
300       hihig       -> hThickIce
301       i0          -> i0swFrac
302       transCoef   -> bMeltCoef
303       frac_energy -> fracMelting
304      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
305       with default values (for now) that do not change the results.
306      remove old version of thsice vars advection in pkg/seaice.
307    o in FFIELDS.h:
308      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
309      - make pLoad & sIceLoad always available (but still only used if
310         ATMOSPHERIC_LOADING is #define).
311    o pkg/kpp: replaced _KPP_RL with _RL
312    o bug fixes for vertical diffusivity computations when both KPP and
313        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
314        are no longer updating the vertical diffusivity array
315        (passed as argument) but are (re-) setting those arrays.
316    o pkg/seaice: fix bug in evp solver, while doing that
317      - change (improve?) discretization of stress computations for both
318        cgrid-lsr and evp solver
319      - add a new routine to compute strain rates
320      - the above changes lab_sea results
321      - add no slip conditions for evp solver (off by default), lsr-version
322        may follow
323      - fix exchange for shear at Z-points (does not change lab_sea)
324      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
325        (to force the user to pick a time step since there is not "safe" way
326        of choosing it)
327      - add principal stress diagnostics
328      - rearrange fields for evp a little to avoid having to call a: too many
329        exchanges and b: exchanges for stress trensor components which we do
330        not have.
331      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
332        of evp, complete rewrite for lsr case (latter is does not yet work
333        in all cases)
334    o pkg/kpp: add code to have mixing in shelf ice caverns
335      - add myThid to all kpp routines (long overdue)
336    
337    checkpoint59
338    o pkg/exf:
339      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
340        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
341      - move exf header files from lower_case.h to UPPER_CASE.h ;
342        add missing cvs Header & Name
343      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
344      - add namelist param. selectStressGridPosition, exf_monFreq
345      - retire many _CLIM routines, and remove data.exf_clim
346        + params moved to data.exf
347        + climsst, climsss now handled by exf_set_gen, i.e.
348          climss?period=0 refers to constant field,
349          climss?period=-12 to monthly forcing
350      - split up namelists in data.exf
351    o pkg/seaice:
352      - remove seaice_exch and seaice_exch_uv
353      - remove superfluous exchange of theta
354      - add myThid to seaice_budget_ocean/ice
355      - add new interface for atmospheric wind forcing (C-grid only)
356        + new routine
357        + two new field (taux, tauy for stress over ice)
358        + removed one global field (DAIRN) for C-grid case only
359    o pkg/thsise
360      - 2nd set of modifs for thsice adjoint in conjunction with exf
361    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
362    
363    checkpoint58y_post
364    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
365      vertical diffusivity, similar to that in MOM4; turned on using
366      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
367      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
368    o Added capability for 3D specification of background vertical diffusion
369      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
370      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
371      "data" file that contains the 3D vertical diffusivity coefficients.
372    o ice dynamics (pkg/seaice) with thsice thermodynamics:
373      - add code within pkg thsice to advect & diffuse sea-ice fields
374      similar to (and will replace) what has been added in  seaice_advdiff.F,
375      but: - conserving Mass, Heat & Salt.
376           - better when using non-linear advection scheme (not yet fully tested)
377           - can also be used in atmospheric set-up (for now, only the diffusion).
378    
379    checkpoint58x_post
380    o IO option for global-file compact format:
381      - add options when generating topology (utils/exch2/matlab-topology-generator)
382      - add I/O capability (pkg/mdsio).
383      - adapt utils/matlab/rdmds.m to read this format.
384      for now long-line format not yet supported by pkg/mdsio (& exch2).
385    o shelfice: add a few diagnostics
386    
387    checkpoint58w_post
388    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
389      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
390      (and replace horiVertRatio in NH code).
391      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
392                         and tutorial_plume_on_slope (sensitive to truncation)
393    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
394      directly to drive seaice model (C-grid only)
395    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
396     - reintroduce computation of wind from stress,
397     - compute tau (in exf_bulkformulae.F) from windstress averaged to
398       mass points to avoid tau = 0
399     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
400    o rdmnc.m: make it work with "global" files created with gluemnc
401    o rdmnc.m : some improvements in dealing with singleton dimension
402      (tested on all testreport mnc output files).
403    o genmake2: disable pkg/profiles if netcdf test fails.
404    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
405    o move call to cal_readparms up to make calendar parameters/variable available
406      to all packages
407    
408    checkpoint58v_post
409    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
410      useDynP_inEos_Zc tested.
411    o pkg/exf: changes to properly interpolate/mask/scale initial fields
412    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
413      and portions thereof.  See read_cs.txt for description and examples.
414    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
415      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
416      following the great-circle arc between those 2 points.
417    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
418      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
419    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
420     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
421     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
422     - still needs work (not working with some options ; efficiency to improve)
423       and serious testing.
424     - use this scheme for temperature & salinity in 2 advection test exp.:
425       advect_xy & advect_xz, respectively.
426    
427    checkpoint58u_post
428    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
429    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
430    o testreport: add option "-skipdir" to skip some test.
431    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
432      momentum calculation.
433    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
434    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
435      remove checkpoint.F and the_correction_step.F (no longer used);
436      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
437    o add option (linFSConserveTr) to correct for tracer source/sink due to
438      Linear Free surface
439    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
440    o pkg/thsice: fix reading mnc-pickups
441    
442    checkpoint58t_post
443    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
444    o pkg/mdsio:
445     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
446       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
447       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
448     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
449     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
450       either MDS_READ_FIELD or MDS_WRITE_FIELD )
451     - new S/R (to replace MDSWRITEMETA), which allows to write more
452       informations (variable names, time ...) to meta files.
453     - modify rdmds.m to give back the meta file content.
454    o pkg/diagnostics: change vertical interpolation to be safer, and more
455       flexible (define p-levels to interpolate to in data.diagnostics);
456      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
457       diagnostic pointer.
458    o pkg/seaice: more cleaning up of seaice_growth, added many comments
459    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
460    o fix multi-category seaice:
461     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
462       SEAICE_MULTICATEGORY
463     - fix short wave heat flux
464    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
465       and allow to use EVP solver. Change forward lab_sea: test both EVP
466       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
467    o Initial check-in of lab_sea adjoint
468      (very similar to natl_box_adjoint/code_seaice)
469      * used C-grid and EVP solver
470      * used KPP, GM/Redi
471      * uses inAdExact=.TRUE.
472      * gradient checks fail for both ADM and TLM
473        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
474        f.d. gradients actually seem more problematic than ADM, TLM gradients;
475        issue is related to forward mismatch between g77 an ifort
476    o pkg/seaice: overhaul of thermodynamics
477     - growth.F and groatb.F are replaced by new routine seaice_growth.F
478     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
479     - move a few global fields out of SEAICE.h into seaice_growth.F and
480       make them 2D (FICE/QNETO/ ...)
481     - remove FO (it is the same as QNETO)
482     - introduce a few local fields to avoid modifying external fields such
483       as atemp, etc.
484    
485    checkpoint58s_post
486    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
487      changed exf_set_gen.F so that
488        genperiod=0 means input file is one time-constant field and
489        genperiod=-12 means input file contains 12 monthly means
490    o CG2D: use pre-computed solver main-diagonal (stored in common block);
491      this affects truncation error ; generate new output file for exp. which
492      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
493        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
494        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
495        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
496        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
497        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
498    o start implementation of deep-atmosphere and anelastic formulation
499    o verification: remove 2nd copy of input files and use script "prepare_run"
500      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
501    o mom_common/vecinv/fluxform: fix a few initialisation isssues
502    o profiles: fix for multithreaded case
503    
504    o diagnostics: rename few diags:
505      s/'PRESSURE'/'RCENTER '/g
506      s/'TICE    '/'oceFreez'/g
507      s/'TAUX    '/'oceTAUX '/g
508      s/'TAUY    '/'oceTAUY '/g
509      s/'SWFLUX  '/'oceQsw  '/g
510      s/DIFx/DFxE/g
511      s/DIFy/DFyE/g
512      and add few ocean-forcing diagnostics:
513      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
514    o modifications to pkg/seaice/growth.F and budget.F, which change results of
515      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
516      as actual snow thickness.  It now refers everywhere to effective snow
517      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
518    
519    checkpoint58r_post
520    o modifications to pkg/seaice/growth.F, which change results of
521      lab_sea experiment: fixes pertain to melting snow over open water, to
522      masking EVAP under sea ice, and to using the correct AREA variable for
523      computations of EVAP, PRECIP, HSNOW, and GHEFF
524    o add ability to read bathy, salt, and theta using MNC (off by def)
525    o add flooding algorithm and advection of HSNOW for pkg/seaice;
526      both are turned off by default and do no change any results
527    o seaice advection with pkg/thsice: a step toward the use of non-linear
528      advection scheme, but #ifdef or commented out for now (requires more EXCH).
529    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
530      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
531      in natl_box (affects results @ truncation level: update output.txt)
532    o multi-threading and IO:
533      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
534      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
535        (needed to work with SingleCpuIO): tested in all verif. exp.
536    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
537      affects the results (but none of the verification test uses this scheme).
538    o Adding some pkg/diagnostics capability to pkg/seaice
539      (will certainly be subject to changes)
540    o ctrl: adding new control variables:
541      lwflux, lwdown, evap, snowprecip, apressure, runoff
542    
543    checkpoint58q_post
544    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
545      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
546      high_res_cube configuration by 4% on Columbia.
547    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
548      add (in global_with_exf/code) a version of EXF_INTERP_READ without
549      dynamical allocation (seems to work in multi-threaded).
550    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
551      single CPU io) so that TAF does not have to see EESUPPORT.h
552    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
553    
554    checkpoint58p_post
555    o obcs: stop if obcs is used with useCDscheme = .true.
556    o shelfice:
557     - fix a sign error so that no slip at shelfice interface works
558     - remove stop for combination non-hydrostatic code and shelfice. That does
559       not mean, that the results are correct, but at least they are numerically
560       stable
561    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
562    o added adjoint exch routined for all exch*3d* routines
563      and updated flow directives
564    
565    checkpoint58o_post
566    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
567      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
568    o change controling S/R for writing pickup file (new S/R do_write_pickup)
569      and clean-up reading/writing of pickup files.
570    o fix local version of read/write pickup (NH part) in rotating_tank/code
571    o simplify EXCH interface:
572     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
573     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
574    o added the regrid package
575    o shelfice:
576     - add a simple boundary layer scheme to reduce noise
577     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
578    
579    checkpoint58n_post
580    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
581       local variable (not in common block).
582    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
583      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
584      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
585        to work with SingleCpuIO.
586    o add "_d 0" to real constant of pkg/cfc subroutines ;
587       update exp. cfc_exemple & tutorial_cfc_offline output files.
588    o multi-threading and IO:
589      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
590        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
591      - barrier before and after reading.
592      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
593      - avoid using MDS_WRITELOCAL for LAND pkg output.
594      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
595        common-block variables ; Allows multi-threading with master-thread IO.
596    o change default MAX_NO_THREADS from 32 to 4 ;
597      and stop cleanly when MAX_NO_THREADS is too small.
598    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
599    
600    checkpoint58m_post
601    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
602       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
603    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
604       keep global_ocean.90x40x15 (for AD testing) with former secondary test
605       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
606    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
607        add MITgcm_tutorials (= code + all the tutorials)
608    o ecco, option to compute cost for total ssh (mean+anom)
609    o consistent with addition of ptracer and ssh in pkg/profiles
610    o profiles: adding ptracer and ssh
611    o testreport: change multi-test output-file name
612      (from output.txt.{name} to output.{name}.txt)
613    o profiles: now ok for mutli-tiles case
614    o seaice: add 4 parameters for different advection schemes for area,
615      (effective) seaice thickness, enthalphy, and snow height. Their default
616      is the standard parameter SEAICEadvScheme
617    o calc_gw:
618     - add cosFacU in zonal viscous flux (harmonic.visc.).
619     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
620       of tutorial_plume_on_slope.
621    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
622    o calc_gw: true flux-form, account for horizontal grid spacing.
623      update rotating_tank results, but not plume_on_slope (affected at
624      truncation level, 11 digits).
625    
626    checkpoint58l_post
627    o calc_gw:
628     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
629     - remove side-drag for now (need to fix it); update plume_on_slope results.
630     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
631    o commit code to make SST/SSS weights spatially variable
632      (based on either variable in-situ or variable initial T/S weights)
633    o pkg/ecco:
634      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
635        now based on horizontally varying weights wthetaLev, wsaltLev
636      * cost_averagesflags now returns year indices in addition to day, month
637      * sflux balance is performed on annual basis
638        (sflxumm, sfluxmm2, bal_sfluxmm)
639      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
640        including separate counting and multipliers
641    o pkg/rbcs
642      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
643    
644    checkpoint58k_post
645    o testreport:
646     - always build in dir. "build" (if not there, mkdir build instead of building
647       & running in input)
648     - run in dir run (if it exists), in build otherwise.
649     - call prepare_run (if input/prepare_run exists)
650     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
651    o pkg/exf modifications to interpolation and rotation routines for more
652       reasonable treatment of North Pole singularity: for tracers North Pole
653       value is set to northernmost zonal-mean value, for zonal velocity it is
654       set to zero, and for meridional velocity it is set to northernmost value.
655    o pkg/exf/exf_check_range.F
656     - add tile index to diagnostics and move stop statement to the very
657       end of the routine.
658    o pkg/diagnostics: (diagnostics_main_init.F)
659      define title of isomorphic variables according to the current config.
660    o pkg/thsice with pkg/seaice dynamics:
661    - fix domain of computation (interior only, required for exf) and do exchanges
662    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
663    o towards a standard way of dealing with multi-threading in MONITOR
664      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
665    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
666       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
667    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
668    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
669    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
670       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
671    o tracer advection:
672     - clean-up and simplify calc_common_factors.F
673     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
674       advection subroutine (but still not used within DST advection S/R)
675    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
676    
677    checkpoint58j_post
678    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
679      from file (collects calls previously in FORWARD_STEP)
680    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
681    o adjoint store dir. adjusted accordingly
682    o genmake2
683      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
684    
685    checkpoint58i_post
686    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
687      on wind stress (SEAICEstressFactor defaults to 1.)
688    o Total number of Timers is finite (<=40): comment out 2 non-essential one
689      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
690    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
691      on CS-grid: no longer loosing mass.
692    o exf & curvilinear-grid: no longer modify longitude xC & xG.
693    o pkg/ggl90: fix sloppy output and fix a bug
694    o pkg/seaice: added SEAICEuseEVPpickup parameter
695      - Set to false in order to start EVP solver with
696        non-EVP pickup files when using SEAICEuseEVP
697      - fix sign error in diffusion in seaice_calc_rhs
698    
699    checkpoint58h_post
700    * Modifications for bottom topography control
701      o replace hFacC by _hFacC at various places
702      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
703      o add non-self-adjoint cg2d_nsa
704      o update autodiff support routines
705      o re-initialise hfac after ctrl_depth_ini
706      o works for 5x5 box, doesnt work for global_ocean.90x40x15
707    * Adding verification for 5x5 box (4-layer) bottom topography control
708    
709    checkpoint58g_post
710    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
711       used for mean seasonal cycle, mean diurnal cycle); add an example
712       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
713    o pkg/ggl90:
714      - add parameter (minimum surface kinetic energy)
715      - fix bug (avoiding division by zero)
716    o couple pkg/thsice to pkg/seaice:
717      - modify advection in seaice to accomodate new scalar fields to be advected
718      - only muliDimAdection scheme work with seaice/thsice
719      - mapping of thsice-variables to seaice-variables, back and forth
720      - does not break the verification experiments, but does not give the
721        desired results either
722    o pkg/seaice
723      - make (default) second order advection a bit less confusing?
724    
725    checkpoint58f_post
726    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
727      to pkg/seaice):
728      - new routines thsice_map_exf and thsice_get_exf provide the interface
729      - add an additional formal parameter to thsice_solve4temp
730    o pkg/exf:
731      - add new fields wspeed, snowprecip (to be able to couple to thsice)
732      - correct Stefan-Boltzmann constant
733      - new parameter for longwave surface emittance
734      - separate some stuff from exf_bulkformulae into new routines  
735        exf_radiation, exf_wind
736      - add new parameters and constants: longwave emissivity for ocean, ice
737        and snow, evaporation parameters over ice
738      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
739        either wind from stress or stress from wind
740    o pkg/thSIce:
741    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
742    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
743       and THSICE_CALC_THICKN
744    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
745    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
746      to make debugging easier.
747    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
748    o pkg/bulk_force:
749      - clean-up comments and parameters ;
750      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
751    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
752      generate new output for test-experiment: aim.5l_cs.thSI
753    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
754      testreport accordingly
755    
756    checkpoint58e_post
757    o SEAICE_CGRID adjoint done
758    o R_STAR adjoint implemented.
759      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
760      * need to sort out init. of h0facc, etc.
761    o Make pkg/profile fully independent of ecco,cost, etc. stuff
762      to be able to use it in pure forward.
763    
764    checkpoint58d_post
765    o upgrade simple test-experiment to tutorial example:
766     step.1: duplicate the experiment and (step.2) will remove the old copy.
767      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
768      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
769      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
770      tutorial_global_oce_biogeo    <- copy of dic_example
771      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
772      tutorial_plume_on_slope       <- copy of plume_on_slope
773      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
774      tutorial_global_oce_optim     <- empty for now (David ?)
775      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
776     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
777    o correct a sign problem in cost_scat.F
778    o obcs and ptracers: fix boundary conditions for advections schemes
779      with larger stencil
780    o thsice adjoint: start
781    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
782      completeness
783    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
784      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
785    o ptracers adjoint:
786      * avoid extensive recomputatations
787      * fix missing re-init. of gptr (missed by TAF)
788    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
789      me to turn off the excessive output to STDOUT that this package produces
790    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
791      and add those terms in Vector-Invariant formulation.
792    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
793      if the control period (xx_hfluxperiod etc) is 0
794    o in profiles pkg, clean routines and fix details
795    o in ecco pkg, reading ssh data:
796      fix problem in case the model does not start at iter0=0
797    o fix mnc-pickup/restart for ptracers
798    o new package prifiles:
799      code to compute profile-based cost by Gael Forget
800      (modifs in ecco, ctrl, autodiff)
801    o Benign bug fix in initialization (spotted by M. Mazloff) of
802      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
803    
804    checkpoint58c_post
805    o adjoint: finish NLFS adjoint and provide reference output in
806      verification/global_ocean.90x40x15/results_ad_nlfs
807    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
808      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
809      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
810      with SEAICE_CGRID defined.
811    o move calendarDumps from "data" to "data.cal" and clean-up the code
812      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
813    o add useEXF & useCAL flags (for now, set in hard-coded way)
814    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
815      (were missing in NH mode, and wrong in quasihydrostatic mode).
816      waiting for Chris updated version of calc_gw to add those CALLs.
817    o fix bug in quasihydrostatic S/R ;
818      add a test for this option: global_ocean.90x40x15.qshyd
819    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
820      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
821    o add on/off flag useOffLine for package OFFLINE
822    o seaice:
823      - modify advection so that it works also on the C-grid
824      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
825        problem in multi-tile runs with C-grid
826      - add flags for clipping ice velocities and/or masking solver forcing
827      - fix drag (ocean on ice) formulation and a bug that caused noise in the
828        C-grid solver
829      - added a few comments to seaice_diffusion.F
830      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
831        are now exclusive)
832      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
833        required re-ordering the code a little:
834       + make DAIRN global variable (defined in SEAICE)
835       + move computation of the viscosities eta and zeta into a new separate
836         routine (because I need to recompute them in seaice_ocean_stress.F)
837    
838    checkpoint58b_post
839    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
840      update output.txt of exp. aim.5l_cs.thSI
841    o various mnc cleanups and improvements:
842      + shrink lookup tables by factor of ~4
843      + better error reporting when running out of lookup space
844      + able to handle longer path/file names (up to 500 chars)
845    o adjoint:
846      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
847      - TBD: "hidden" mom_vecinv recomp. in dynamics
848    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
849     (allow to differentiate between forcing components using new integer flags:
850      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
851     and add new flag to put Dissipation tendency out of Adams-Bashforth.
852    o ecco
853      - enable trend removal from SSH anomaly obs.
854    o adjoint
855      - a fix for PmEpR when #undef EXACT_CONSERV
856      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
857      - try to fix "hidden" recomp. in forward_step for NLFS
858        (NLFS seems broken sometimes after I checked it in)
859    o seaice:
860     - add c-grid version of the dynamic solver:
861       + three new routines that are the c-grid substitute lsr, dynsolver
862         and ostres
863       + put a few fields that were local to dynsolver into global common
864         blocks, so that I can move the computation of stresses etc into
865         seaice_lsr (saves coding but may break the adjoint).
866     - replace more hardwired parameters by runtime parameters
867     - add ice masks that mask the rhs of the implicit solvers where there
868       is no ice (commented out in seaice_dynsolver, because i am not sure
869       if this works properly), eventually this should replace the clipping
870       of ice velocities in seaice_dynsolver to +/-40cm/s.
871    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
872      include it only where its needed
873    o move balancing of fluxes before the call of external_forcing_surf
874    o seaice:
875      - correct units of turning angles (now they are really in degrees)
876      - move computation of GWATX/Y out of main routine into dynsolver
877      - initialize GWATX/Y in seaice_init
878  o Apply mask on Fresh-Water flux (needed for SSH forcing).  o Apply mask on Fresh-Water flux (needed for SSH forcing).
879    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)
880  o seaice: add runtime flags for turning angles (default to zero)  o seaice: add runtime flags for turning angles (default to zero)
881  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
882    and trend from exf forcing and ctrl control adjustments    and trend from exf forcing and ctrl control adjustments

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