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revision 1.1442 by gforget, Wed May 25 23:56:29 2011 UTC revision 1.1694 by jmc, Mon Jul 23 23:27:10 2012 UTC
# Line 4  $Name$ Line 4  $Name$
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    o verification (adjoint exp):
8      - reduce length of simulation by half for experiment global_ocean.cs32x15
9        (std, seaice & seaice_dynmix) and exp tutorial_dic_adjoffline; update output.
10    o pkg/mom_common (mom_u/v_bottomdrag), pkg/shelfice (shelfice_u/v_drag)
11      - replace if statements KE.ne.0 with KE.gt.0 to avoid sqrt of negative numbers
12        of KE that can occur with aggressive optimization
13      + put quadratic bottom drag calculation in separated loops (only done if
14        using bottomDragQuadratic)
15    o model/src: CG2D_NSA
16      - clean-up:  stop if cg2dNormaliseRHS=T and AUTODIFF
17         and replace GLOBAL_SUM calls with GLOBAL_SUM_TILE.
18      - in test-exp that uses CG2D_NSA (bottom_ctrl & tutorial_tracer_adjsens),
19         change cg2d residual target to be expressed in Wunits (=> do not normalise
20         RHS ; this fix global_max Pb with TAF); update output.
21    o verification/tutorial_tracer_adjsens:
22       improve parameter consistency (and get rid of warnings):
23       - use deltaTFreeSurf=deltaTtracer (better with NonLin FreeSurf);
24       - switch Temp Adv Scheme from 81 to 80 (no limiter since theta < 0 is physical)
25       - use staggerTimeStep (for stability) in som81; use default rotation period.
26    o pkg/exch2:
27      - with empty facet: fix compact-format (W2_mapIO=1) definition (was previously
28        reset to 0 = 1 long line in X)
29    o pkg/mdsio:
30      - fix reading of dimensions from meta file for large-size domain
31    o model/src:
32      - fix saltIsActiveTr setting for IdealGas eosType (eosType is 6 character long);
33      - to refine CS-grid check, add logical flag "hasWetCSCorners": true if using
34        Cubed-Sphere Exch with CS-corners inside the domain;
35        make new S/R INI_GLOBAL_DOMAIN from code in ini_linear_phisurf.F to calculate
36        globalArea and to set hasWetCSCorners.
37      - add warning if usingCurvilinearGrid and momAdvection in flux-form (missing
38        metric terms); stop if hasWetCSCorners=T and momAdvection in flux-form.
39      - re-activate the stop if useCDscheme and hasWetCSCorners=T (previously if
40        useCDscheme and useCubedSphereExchange).
41    o pkg/seaice/seaice_growth.F :
42      - compute the SEAICE_DISABLE_HEATCONSFIX term accordingly
43        for the (.NOT.useRealFreshWaterFlux).OR.(nonlinFreeSurf.EQ.0)
44        when the previous code was not correct.
45      - in all cases diagnoze the boundary condition mismatch to SIaaflux
46      - in the case of useRealFreshWaterFlux.AND.(nonlinFreeSurf.GT.0) add
47        that term to QNET (essentially to set the melt/freeze water to 0degC).
48        when SEAICEheatConsFix is true, so that the ocean+ice budget heat is closed.
49    o verification/global_ocean.cs32x15/input.seaice :
50      - add SEAICEheatConsFix in data.seaice, ensuring closed ocean+ice heat budget.
51      - add diagnostics (commented out) for budget test using my matlab codes (gcmfaces).
52      - update results (output.seaice.txt) accordingly.
53    o verification/lab_sea/input/data.seaice :
54      - remove SEAICEheatConsFix, which is now be tested
55        in global_ocean.cs32x15. The presently coded fix
56        is only consistent with real fresh water + nlfs.
57      - update results (output.txt) accordingly.
58    o pkg/salt_plume: added diagnotic for salt tendency (oceSPtnd).
59    o AD_CONFIG.h file:
60      - in genmake2: remove "#undef ALLOW_ECCO_OPTIMIZATION" from AD_CONFIG.h;
61      - remove #include "AD_CONFIG.h" from all included OPTIONS files and
62        add it explicitly in each fortran src file where it is needed.
63        motivation: header file AD_CONFIG.h is generated/modified after "make depend"
64        thus introducing potentially wrong dependency; therefore, better to include
65        it only where it's really needed, and after any other included OPTIONS file
66        (less tempting to bring conditional includes according to ALLOW_ADJOINT_RUN
67        or ALLOW_TANGENTLINEAR_RUN).
68    
69    checkpoint63p (2012/07/06)
70    o pkg/autodiff:
71      - rename S/R INI_AUTODIFF to AUTODIFF_INIT_VARIA ;
72      - create new header file "AUTODIFF_PARAMS.h" for pkg/autodiff parameters
73        which are now read from new parameter file "data.autodiff" (inAdExact
74        previously in "data", use{KPP/GMRedi/SEAICE}inAdMode previously in data.pkg)
75      - add file "data.autodiff" in all verification/*/input_ad/ directories.
76      - add run-time parameter to turn On/Off SEAICEuseFREEDRIFT in adjoint/forward
77        mode (used in global_ocean.cs32x15.seaice_dynmix test exp.)
78    o verification/tutorial_tracer_adjsens/
79      - add extra sub-verification which uses "SOM" advection scheme
80        (2nd Order-Moment Advection Scheme, Prather Limiter) with
81          #define GAD_ALLOW_TS_SOM_ADV in GAD_OPTIONS.h
82        and in data:
83          multiDimAdvection=.TRUE.,
84          tempAdvScheme=81,
85          saltAdvScheme=81,
86    o model/src:
87      - introduce ALLOW_BALANCE_RELAX which allow the removal
88       of the global mean of relaxation terms by setting
89       balanceThetaClimRelax and balanceSaltClimRelax
90      - disable balanceEmPmR and balanceQnet in the case when useSeaice.
91       This case is now treated appropriately in seaice_growth.F
92    o pkg/seaice:
93      - do balanceEmPmR and balanceQnet based on the net fluxes
94        (SItflux) that enter the ocean+ice system rather than QNET
95        and EMPMR. Works best in real fresh water.
96      - SIatmFW, SIatmQnet, and SItflux computations had to be moved
97        out of the diagnotics bloc, and stored in global arrays.
98    
99    checkpoint63o (2012/06/29)
100    o vertical mixing schemes:
101      - remove unused S/R CALC_BUOYANCY (left from branch-atmos merging)
102      - replace computation of density (in Function STATE1, opps_calc.F) by a call
103        to S/R FIND_RHO_SCALAR
104      - pass sigmaR to S/R PP81_CALC, MY82_CALC (but not yet used) and to GGL90_CALC
105        and use it for N^2 calculation in ggl90_calc.F (save 2 density computations);
106        affects output (vermix.ggl90) at truncation level.
107    o testreport:
108      - change adjustment of SIZE.h for mpi+mth testing: preserve enough tiles
109        (nSx,nSy) for the number of threads (from eedata.mth)
110    o model/src:
111      - remove 2nd set of calls at the top of initialise_varia.F (Adjoint part)
112        related to Non_Lin Free-Surf or Bottom-Control (but not longer necessary).
113    o verification/tutorial_tracer_adjsens/
114      - compile with ALLOW_CG2D_NSA
115      - run with nonlinFreeSurf=3
116      - update reference output_adm.txt
117    o tools/genmake2:
118      - add "-DHAVE_NETCDF" to the DEFINES list when NetCDF is available ;
119        refine usePROFILES switching off (only when NetCDF is not available).
120    o verification (atmospheric set-up):
121      - change eosType='IDEALGAS' to eosType='IDEALG' to match variable declaration
122    o pkg/profiles : refine profiles and files handling.
123    o model/src and pkg/ecco : introduce run-time switch usePROFILES.
124    o model/src/the_main_loop.F, forward_step.F and pkg/exf/EXF_OPTIONS.h :
125      - changes to use model/src/the_main_loop.F rather than the ecco version
126        in ecco type adjoint runs.
127    o model/src:
128      - move computation of recip of grid distance & area from INI_MASKS_ETC to INI_GRID
129      - move setting of h0Fac[C,W,S] from INI_LINEAR_PHISURF to INI_MASKS_ETC
130      - update_masks_etc.F: rename SMOOTH*_R4,R8 function to the corresponding type (RS,RL)
131    o model/src:
132      - fix S/R UPDATE_CG2D for ALLOW_DEPTH_CONTROL case (was empty before);
133        update output of test experiment bottom_ctrl_5x5.
134    o pkg/generic_advdiff:
135      - implement vertical bi-harmonic diffusion (for now, only for T & S and
136        only explicitly).
137    o verification/bottom_ctrl_5x5/
138      update reference output (results changed quite some time ago,
139      not sure when; but new reference results look ok in terms of grdchk)
140    o verification/1D_ocean_ice_column/
141      For verification purposes, the exact adjoint rather than an approx.
142      should be used (e.g., to comare against F.D. or TLM).
143      removed autodiff_inadmode*_ad.F routines in code_ad/
144      Update results/ accordingly.
145    o pkg/cal:
146      - change cal_getdate.F so that output date is function of input time only
147        (less ambiguous, not mixed up with input iteration number).
148      - fix calendarDumps for non-zero phase-lag (S/R CAL_TIME2DUMP).
149    o pkg/diagnostics:
150      - implement calendarDumps also for stats-diags
151      - implement calendarDumps also for snap-shot output (negative freq)
152      - for now, ignores calendarDumps if non-zero phase-lag.
153    
154    checkpoint63n (2012/06/04)
155    o model/src:
156      - recompute rSurfW & S to ensure consistent column thickness (needed for rStar)
157        between Sum_k(hFac*drF) and rSurf-rLow, for now only when using pkg/shelfice;
158      - use h0FacC, W & S to compute hFac_surfC, W & S in calc_surf_dr.F (more
159        similar to calc_r_star.F); update results of experiment internal_wave and
160        tutorial_global_oce_in_p (affected @ truncation level).
161    o pkg/shelfice:
162      - add parameterisation of advective-diffusive flux into the ice shelf
163        according to Holland and Jenkins (1999), eq.22-33, as suggested by Jan De Ryd
164      - simply eps3/3a computation
165    o eesupp:
166     - add new CPP option (DISCONNECTED_TILES) to disconnect tiles (no exchange
167       between tiles, just fill-in edges assuming locally periodic subdomain) and
168       add corresponding exchange subroutines (EXCH0);
169     - new CG-solver version (_EX0) for disconnected-tiles special case.
170    o model/src (CG-solvers):
171     - modify Single-Reduction version (CG2D_SR) in case cg2dMaxIters is reached
172       (similar final residual output and max-Iter number as with standard version);
173     - allows to store and use lowest-residual solution (standard & _SR versions);
174     - cleaning up (remove old, commented out code, LETS_MAKE_JAM ...).
175     - by default, also compile CG2D_SR version (define ALLOW_SRCG in CPP_OPTIONS.h)
176    o eesup/src:
177     - global_vec_sum.F cleaning: add a BARRIER ; update comments ; remove ndef
178       ALWAYS_USE_MPI (no longer needed after fixing usingMPI settings - March 2012)
179    o pkg/salt_plume added to lab_sea/input_ad.noseaicedyn
180    
181    checkpoint63m (2012/04/27)
182    o pkg/shelfice:
183     - account for partical cells in surface level below ice-shelf for hydrostatic
184       pressure calculion (set uniformFreeSurfLev to F); update isomip experiments.
185    o ad test experiments:
186     - update and rename to "ad_optfile.local" local AD-optfile specific to a
187       particular adjoint verification experiment (in verification/*/code_ad/)
188    o pkg/seaice & pkg/exf:
189     - Part two of ECCO-CLIVAR code merges.
190       Completes merge of seaice area relax. code.
191       Requires unified CPP option EXF_ALLOW_SEAICE_RELAX
192       to be set in EXF_OPTIONS.h since this pkg controls its I/O
193       (and avoids second CPP option in SEAICE_OPTIONS.h)
194     - change default value of costIceStart & costIceEnd to a valid date.
195     - add snowPrecip to HSNOW in seaice_growth
196    o pkg/ptracers:
197     - move ptracers summary and setup check into separated S/R ; add a check for
198       valid PTRACERS_Iter0 value (error+stop or just warning).
199    o pkg/cal (+ pkg/ecco):
200     - avoid calling a S/R with 2 times the same arg (FWD: unless both are only used
201       as input; and for AD, unless both are not differentiable (e.g., k index)).
202    o model/src:
203     - define internal flag "uniformFreeSurfLev" (=T when free-surface level-index
204       is everywhere k=1) to speed-up some calculations (by pass kSurf reference);
205       temporary set to usingZCoords value (to be changed to F when using shelfice).
206     - hydrostatic pressure: implement partial cell near the surface also for
207       Z-coordinates (for the case where uniformFreeSurfLev=F); replace test on
208       usingZCoords with test on uniformFreeSurfLev where needed (in NonHyd code).
209    o pkg/ctrl/ctrl_init.F:
210     - add a formal parameter to s/r ctrl_init_rec to print
211       xx_$(ctrl_valiable)_file for easier debugging
212     - move call of cal_* routines into the if-block where they are really
213       needed so that xx_$(ctrl_variable)_period can be 0 or -12 without having
214       to specify a startdate
215    o pkg/seaice:
216     - update comments in SEAICE_OPTIONS.h (+ similar update of lab_sea/code and
217       global_ocean.cs32x15/code versions).
218     - turn on seaice Multi-category (in data.seaice, SEAICE_multDim=7) for
219       verification experiment global_ocean.cs32x15.seaice and update results.
220    o pkg/exf:
221     - new S/R EXF_GETFIELD_START to return starting-time of a forcing field
222       (according to useExfYearlyFields).
223    o pkg/cal:
224     - move calendar setting & summary (previously in cal_readparams.F) into new
225       S/R CAL_INIT_FIXED to be called later in the initialisation process, once
226       length of the simulation is set (after SET_PARMS call); This is an attempt
227       to fix Pb when, e.g.: pkg/longstep, modifies the length of the run.
228     - For safety: keep a record of pkg/cal parameter settings status
229               to allow to STOP if one pkg/cal S/R is called too early.
230     - add a stop in all basic pkg/cal subroutines if called before setting is done.
231     - modify cal_getdate.F: stop when nothing was returned;
232       if called with myIter=-1, simply retrun modelBaseDate (1,2 = startDate_1,_2);
233       this allows to remove "cal.h" from seaice_read_parms.F & init_mnc_vars.F.
234    
235    checkpoint63l (2012/04/04)
236    o pkg/bbl:
237      - fix call to FIND_RHO_2D in bbl_calc_rho.F (case multi-tiles per proc);
238        update global_with_exf output.yearly.txt file.
239    o pkg/cal:
240      - start to clean-up cal_set.F ; fix for the case where baseTime is non-zero.
241      - remove 2 unsused and very short (1 line only) functions ;
242      - remove unsused subroutines from AD-Diff list.
243    o model/src:
244      - start to implement clean wait to stop in initialization S/R (config_check.F,
245         packages_check.F, ini_parms.F and pkg/obcs/obcs_check.F + pkg/mypackage)
246    o folowing PRINT_MESSAGE changes:
247      - remove reminder multiple print to the same file (STDOUT) when multi-threads.
248    o pkg/bbl:
249      - modification so it can work with z*
250      - replace deltaT with dTtracerLev(k) for asynchronous time stepping
251      - global_with_exf/input.yearly verification; changes output.yearly.txt
252    o eesupp/src:
253      - PRINT_MESSAGE: use OpenMP critical instruction (similar to PRINT_ERROR);
254        writing to unit 0 (if unit=errorMessageUnit) extended to the case myThid=1
255      - CHECK_THREADS: specific code if using OpenMP threading: improve checking of
256        # of threads across processors (e.g., different env OMP_NUM_THREADS setting)
257      - improve special preliminary call to EESET_PARMS (if eedata is read 2 times).
258      - when using MPI, always set usingMPI=T ; set default accordingly and stop
259        if not consistent.
260      - ALL_PROC_DIE: add a BARRIER after MPI_FINALIZE call ; skip this when thread
261        argument is zero (in case called within single-thread section).
262    o pkg/fizhi:
263        clean-up turbulence cold-start switch: decided in fizhi_init_vars.F, stored
264        in common bloc (fizhi_coms.h) and then passed as argument up to S/R TURBIO.
265    o pkg/exch2:
266      - add argument "updateCorners" to S/R exch2_get_uv_bounds (enable to
267        activate EXCH_IGNORE_CORNERS in vector EXCH S/R).
268      - switch 1rst EXCH call to IGNORE_CORNERS (instead of UPDATE_CORNERS)
269        but keep the 2nd with UPDATE_CORNERS: this prevents overwriting good data
270        with bad ones coming from a not-yet-updated halo.
271        This should fix the problem when sNx <> sNy and GCD(sNx,sNy) < 2*Olx.
272    o pkg/frazil:
273        move FrzForcT diag from frazil_diagnostics_state.F to frazil_calc_rhs.F
274        http://mitgcm.org/pipermail/mitgcm-devel/2012-March/005384.html
275    o model/src/config_check.F: add a check for OLx>sNx/OLy>sNy
276    o verification/lab_sea
277      * #undef SEAICE_EXCLUDE_FOR_EXACT_AD_TESTING
278      * #define ALLOW_SST_CONTROL & ALLOW_SST_CONTROL
279      * nTimeSteps 3 -> 4
280      * changed reference output accordingly
281    o pkg/ctrl:
282      * fix ctrl_get_gen for xx_sst, xx_sss
283    o pkg/fizhi:
284      - fix 2 calls to S/R GRD2MSC (argument igrd) in update_earth_exports.F
285        update results of exp. fizhi-cs-32x32x40 (fail with only 6 digits for cg2d)
286      - by default, use new version of S/R GETPWHERE (#define TRY_NEW_GETPWHERE);
287        fix few out-of-bounds indices in referencing vars (initialise igrd to 1);
288        clean-up fizhi_turb.F (remove unused & uninitialised qdiaglsm array).
289    o pkg/gmredi:
290      - add diagnostic of Redi (main diagnonal) vertical diffusive flux of Temp
291    o pkg/fizhi:
292      - fix few initialisation and multi-tile Pb: aqualev & gridalt now pass the
293        (old)aces open64 tuv test.
294    o pkg/icefront: fix bug and reorder loop in icefront_init_varia.F
295    o pkg/mom_vecinv:
296      - fix 1 loop range in mom_vecinv.F to be like all the other loops which
297        set/update gu,gv/Diss (fix Pb of uninitialised fVerUkp in admom_vecinv
298        with non-lin free-surf).
299    o model/src: move k-loop outside of i/j-loops when (re-)computing R_low
300      in ini/update_masks_etc.F in order to avoid -O3 optimization problems with
301      some compilers (gfortran 4.6.0 on MacOS)
302    o momentum:
303      - separate fVer?(:,:,kUp) & fVer?(:,:,kDown) in argument list of MOM_FLUXFORM
304        & MOM_VECINV subroutines (to help TAF). This fixes Pb of uninitialised
305        fVer?(kUp) in admom_fluxform with non-lin free-surf or bottom control.
306    
307    checkpoint63k (2012/03/17)
308    o model/src:
309       - selectAddFluid (ALLOW_ADDFLUID): add missing term in horizontal momentum
310         flux-form (mom_fluxform.F) and vertical momentum (calc_gw.F) equations.
311       - SOLVE_DIAGONAL: switch default to use adjoinable & vectorized version
312         (#undef SOLVE_DIAGONAL_LOWMEMORY); update output of exp. front_relax.bvp.
313    o model/src: solve_*diagonal.F
314       - replace division with multiplication by inverse (similar to original version)
315         update output of AD exp. global_ocean.90x40x15.
316       - fix pkg/gmredi/gmredi_calc_psi_bvp.F & pkg/ggl90/ggl90_calc.F
317         to enable the use of the vectorized & differentiable solve_tridiagonal.F
318       - test exp. global_ocean.90x40x15/input_ad: switch to advection scheme 20 for
319         vertical advection (to get solve_tridiagonal tested in AD mode).
320    o pkg/seaice: ECCO-CLIVAR merge:
321      1. seaice AREA relaxation
322         * CPP option: SEAICE_ALLOW_AREA_RELAXATION
323         * runtime flag: SEAICE_tauAreaObsRelax
324      2. modified global mean cost imbalance code: CPP option
325          ALLOW_SSH_GLOBMEAN_COST_CONTRIBUTION
326    o another iteration on solve_*diagonal.F
327       Make choices independent of AUTODIFF
328       Default will be the adjoinable vectorized version.
329       Alternative choices are:
330       * non-adjoinable original version with low memory footprint:
331         #define SOLVE_DIAGONAL_LOWMEMORY
332       * still adjoinable but does not vectorize (k as inner-most loop):
333         #define SOLVE_DIAGONAL_KINNER (keeping SOLVE_DIAGONAL_LOWMEMORY undef)
334    o testreport
335     - add option to use a home made wrapper around "make"
336     - remove MITGCM_IEEE env. variable (no longer active)
337    o pkg/shelfice
338     - improve computation of friction velocity for velocity dependent
339       exchange coefficients: include velocities into SHELFICEBoundaryLayer
340       block to average velocities vertically
341     - add TAF store directives for SHI_ALLOW_GAMMAFRICT
342    o Modify diagonal solvers, now three versions (upon request):
343      #ifndef SOLVE_DIAGONAL_AUTODIFF
344        1. default version (dating back a while ago)
345      #else /* def SOLVE_DIAGONAL_AUTODIFF */
346      # ifdef SOLVE_DIAGONAL_KINNER
347        2. adjoinable version with k-innermost loop (G. Forget)
348      # else
349        3. adjoinable vectorized version of 2.
350      # endif
351      #endif /* SOLVE_DIAGONAL_AUTODIFF */
352      All flags are currently set within routines, but could/should be moved to CPP-options.
353      Array bounds for 1. are as before, for 2.,3. cover the entire domain
354      (could be changed for 1. too).
355    o verification/lab_sea (fwd):
356      - update the 4 fwd lab_sea test experiment: no longer SEAICE_GROWTH_LEGACY,
357        use 7 categories (except hb87), new solve4temp params (except salt_plume),
358        constant salinity (=4) or variable salinity (salt_plume) done through
359        SItracer.
360    o pkg/seaice:
361      - rename parameters: SIsalFrac to SEAICE_saltFrac & SIsal0 to SEAICE_salt0;
362      - remove old parameters ( SEAICE_freeze, SEAICEturbFluxFormula, SEAICE_gamma_t,
363         SEAICE_gamma_t_frz, SEAICE_availHeatTaper & SEAICE_availHeatFracFrz)
364        from SEAICE_PARMS.h ; still need to fix seaice_cost_sst.F (broken when
365        SEAICE_freeze got retired) but already better than previously with
366        SEAICE_freeze=123456.7 deg.C;
367      - move setting of facOpenGrow/Melt from SEAICE_INIT_FIXED to SEAICE_READPARMS
368        (safer multi-threaded setting); always set SEAICEuseEVP;
369      - setting of ocean-ice turb. flux coeff: moved from SEAICE_CHECK to
370        SEAICE_READPARMS & SEAICE_INIT_FIXED (this fixes wrong summary report);
371        stop if multiple specifications for the same coeff; make sure default
372        SEAICE_mcPheePiston is compatible with drF(1) & deltaT.
373    o pkg/obcs:
374      - allow to switch to upwind 1rst order advection scheme for the advective
375        flux computation at the open-boundary; disabled for adjoint built.
376    o pkg/ptracers:
377      - rename PTRACERS_RESTART.h -> PTRACERS_START.h
378      - rename ptracers_fields_blocking_exchanges.F -> ptracers_fields_blocking_exch.F
379      - add parameter to decide when to start a tracer; use internal flag to
380        know which tracer to step-forward; switch this internal flag at the top
381        of forward_step.F (new S/R PTRACERS_SWITCH_ONOFF); for now, not enabled
382        for adjoint built.
383    o pkg/seaice:
384      - add SEAICE_SIZE.h anywhere in the code where SEAICE.h is included ;
385      - move MULTDIM declaration and setting from SEAICE.h to SEAICE_SIZE.h ;
386      - keep experiment offline_exf_seaice truly single category (set MULTDIM=1).
387    o pkg/ecco:
388      - fix writing of output file DiagnosCost_ClimSalt/Theta
389        and DiagnosCost_DriftSalt/Theta (if multi-tiles per proc).
390    o pkg/seaice:
391      - add missing initialisation of COR_ICE array in dynsolver.F
392      - merging SEAICE_MULTICATEGORY define and undef cases. Now the same code is
393        compiled either way, and is tested in all exps (multidim was only tested
394        in lab_sea ad before).
395      - cosmetic change to prepare for future addition of ITD. no change to results.
396        no defaults change.
397      - added run time param SEAICE_multDim (7 for SEAICE_MULTICATEGORY, 1 otherwise).
398      - by lack of adequate verification experiments, I further used custom versions
399        of global_ocean.cs32x15 to test multicat or not, with pickup or not. All
400        should be correct.
401      - avoid recomputations in ad.
402    o array initialisation in adjoint mode:
403      1) pkg/mom_common/mom_calc_ke.F:
404        add full array initialisation of KE inside mom_calc_ke.F (ALLOW_AUTODIFF_TAMC):
405        The S/R which calls MOM_CALC_KE initialises KE but in some recomputation
406        part this initialisation is gone, resulting in Floating Point Exception
407        (caught by open64 compiler with debug option).
408      2) model/src/convective_weights.F
409        set output convectCount over the full array range (instead of doing
410        an update): this fix a similar issue when called within recomputation (adjoint)
411        which could by-pass the initialisation (normally done in the caller S/R).
412    o pkg/seaice:
413      - final version of turbulent flux params, as agreed at MIT ice meet:
414           SEAICE_mcPheePiston (default is ~ 0.000875)
415           SEAICE_mcPheeTaper (default is 0.)
416           SEAICE_frazilFrac (defualt is 1.)
417           SEAICE_mcPheeStepFunc (default is false)
418      - changes results at trunction error level
419      - ifdef SEAICE_EXTERNAL_FLUXES, disallow SEAICE_waterAlbedo
420    o added pkg/frazil:
421      - see frazil_description.tex for details
422      - verification experiment is global_with_exf/input.yearly; changes output.yearly.txt
423    o pkg/shelfice/shelfice_thermodynamics.F
424      - fix exponents for velocity dependent exchange coefficients: change
425        from 2/3(=0) to 0.66666666666666667
426      - move computation of velocity dependent exchange coefficients into
427        separate loop, so that it applies to both thermodynamics
428      - move some divisions by constants out of loops
429    
430    checkpoint63j (2012/02/16)
431    o pkg/seaice:
432      - overhaul of seaice_summary.F after feb 2012 clean-up of seaice_growth.F etc.
433      - SItracer:  added run time params, and allow coupling to ocn salinity.
434    o pkg/seaice: remove (almost) all divisions by constants within loops
435      in seaice_growth.F and seaice_solve4temp.F, this changes (only) the cg2d
436      results of global_ocean.cs32x15.seaice from 16 to 11 digits (but only
437      those, caused by 1/QI -> recip_QI) -> update output.seaice.txt,
438      output_adm.seaice_dynmix.txt and also lab_sea: output_adm.evp.txt
439    o pkg/seaice :
440      - simplify McPhee tapering, and allow to use it with SEAICEturbFluxFormula
441        = 1 or 2, using newly added run time parameter SEAICE_availHeatTaper.
442      - fix d_AREAbyATM, d_AREAbyOCN, d_AREAbyICE diags I broke in r1.148.
443      - add permanent SItflux diag that corresponds to TFLUX but includes
444        ice+snow. Hence SItflux-TFLUX should match the ice+snow heat budget.
445      - allow activation/testing of a fix for suspected missing term in
446        ocn-ice heat budget (to be confirmed). To test this, you want to
447        undef SEAICE_DISABLE_HEATCONSFIX, and then set the run time param
448        SEAICEheatConsFix to .TRUE. that also allows the 'SIaaflux' diagnostic.
449      - no change in results, fwd or ad.
450    o global_ocean.cs32x15/results: 3 changes following from the pkg/seaice commit below:
451      - switch to variable freezing point.
452           Results change : cg2d -> 1 digits; ad -> 3-6-6 digits.
453      - bug fix : the sublimation term that was missing is now activated.
454           Results change : cg2d -> 2 digits; ad -> 8-6-6 digits.
455      - bug fix : flooding sign term for SIsal0.NE.0.
456           Result change : cg2d -> 8 digits; ad -> 11-12-9 digits.
457    o pkg/seaice:
458      - unified freezing point treatment : the old SEAICE_VARIABLE_FREEZING_POINT
459        is now the default, and the old default constant freezing point is recovered
460        with SEAICE_tempFrz0    = -1.96,
461             SEAICE_dTempFrz_dS = 0.,
462      - retire SEAICE_freeze (= the old way of specifycing the constant freezing point)
463      - remove ALLOW_SEAICE_FLOODING brackets; run time switch is already there.
464      - bug fix (thanks to M. Losch) : the sublimation term that was missing is now
465        activated. To reproduce old results with this bug define SEAICE_DISABLE_SUBLIM.
466      - bug fix (silly me) : flooding sign term (seaice_growth.F r 1.149line 1211)
467        was wrong for SIsal0.NE.0. Changes cs32x15 results (see above item for detail).
468      - bug fix (thanks to O. Jahn) : area loss for melting  got messed up in
469        seaice_growth r149 for legacy branch (no results change).
470      - introduce SEAICE_CAP_SUBLIM : caps sublimation heat flux in solve4temp (code
471        from I. Fenty).
472      - results did not change except for global_ocean.cs32x15, mostly due to the
473        switch to variable freezing point (see above item for detail).
474    o pkg/thsice:
475      - fix and simplify interface to salt_plume pkg ; diagnose directly amount of
476        seawater freezing in thsice_calc_thickn (not used).
477    o pkg/seaice: turbulent flux term specification via run time params.
478      - replace CPP switches with run time switches to facilitate testing
479      - retired CPPs : MCPHEE_OCEAN_ICE_HEAT_FLUX,
480                       GRADIENT_MIXED_LAYER_TURBULENCE_FACTOR
481      - added runtime parameter : SEAICEturbFluxFormula
482      - move Mcphee constants to SEAICE_PARAMS.h
483      - seaice_readparms.F : read turbulent flux term params (SEAICEturbFluxFormula;
484                 SEAICE_availHeatFrac/Frz, or SEAICE_gamma_t/_frz if apply);
485                 remove seaice_summary call (moved to seaice_init_fixed)
486      - seaice_init_fixed.F : set SEAICE_availHeatFrac/Frz depending on
487        SEAICEturbFluxFormula, and seaice_summary call (moved from seaice_readparms)
488      - seaice_summary.F : add missing report of read turbulent flux term set up
489                           and SITRACER.
490      - seaice_check.F : check range; inform and stop if retired CPPs are used
491                         (incl. SEAICE_AGE).
492      - seaice_growth.F : unified use of SEAICE_availHeatFrac/Frz, without
493             CPP switch, same computation as before for the different options.
494      - change results at the truncation level.
495    o pkg/seaice:
496      - remove un-used parameters LAD & MAX_TICE ; add new run-time parameters:
497        useMaykutSatVapPoly (default=F), postSolvTempIter (default=2) and
498        SEAICE_wetAlbTemp (default=-1e-3). Remove option SEAICE_SOLVE4TEMP_LEGACY.
499      - update verification/*/input*/data.seaice:
500        to reproduce previous results with former #defined SEAICE_SOLVE4TEMP_LEGACY
501        code, set useMaykutSatVapPoly=T & postSolvTempIter=0 ;
502        and to reproduce previous results with former non-SOLVE4TEMP_LEGACY code,
503        set SEAICE_wetAlbTemp=0 & SEAICE_snowThick=0.
504    o pkg/seaice/seaice_solve4temp.F (SOLVE4TEMP_LEGACY):
505      - remove LEGACY code for solving for tsurf (A1,A2,A3) but maintain the same
506        algorithm (same choice: useMaykutPolySatVap=T, postSolvTempIter=0);
507        difference in results only due to machine truncation.
508      - remove MAX_TICE (tsurf is always =< TMELT anyway); keep MIN_TICE if using
509        MaykutPolySatVap; keep MIN_LWDOWN.
510      - adapt SEAICE_MODIFY_GROWTH_ADJ code (untested) to non-legacy formulation.
511      - update output of verification exp. lab_sea (4 fwd: 11 cg2d digits except hb87,
512        + 3 AD: 6 digits except evp) and offline_exf_seaice.seaice (12 digits).
513    o pkg/salt_plume:
514      - isolate saltPlumeFlux array exch into a specific S/R called from
515        do_oceanic_phys.F
516      - add interface to pkg/salt_plume (filling of saltPlumeFlux) in pkg/thsice.
517    o verification:
518      - move untested set-up to MITgcm_contrib/verification_other.
519    o pkg/seaice:
520      - retire old way of SEAICE_AGE. Now replaced with ALLOW_SITRACER.
521    o pkg/seaice:
522      - seaice_solve4temp.F (keeping results unchanged):
523        * add 2 future run-time params to select which saturation vapor pressure
524          formula is used and how post-iteration fluxes are set.
525          Temporary set these 2 params according to option SOLVE4TEMP_LEGACY;
526        * New piece of code (not used) to update surf. atmos. heat flux F_ia using
527          the linearized expression to stay consistent with tsurf finding.
528      - seaice_freedrift.F avoid floating exception in sqrt(y) since y=sqrt(x*x)-x
529        can be < 0.
530    o pkg/seaice/seaice_solve4temp.F (SOLVE4TEMP_LEGACY undef):
531      - remove from F_ia (and from it's derivative dFiDTs1) the contribution of
532        conductive heat flux F_c , and add it explicitly when updating tsurf as
533        solution of: Fc = Fia + d/dT(Fia - Fc) *delta.tsurf
534        so that now F_ia has a consistent meaning through the entire routine.
535        This causes differences at truncation level: update output of fwd exp.
536        global_ocean.cs32x15.seaice.
537    o pkg/seaice:
538      - lots of editing/cleaning in seaice_solve4temp.F + better documentation
539        of arrays, sign/direction of fluxes; no effect on results.
540      - replace hard coded 273.16 (=previous value of celsius2K) by celsius2K
541        in seaice_budget_ocean.F & seaice_solve4temp.F (SOLVE4TEMP_LEGACY part);
542        note: this should have been done before changing celsius2K default.
543      - to keep results unchanged, add back old value of celsius2K in verification
544        exp. input*/data : lab_sea (AD), offline_exf_seaice (fwd+AD) & seaice_obcs
545      - replace hard coded seawater freezing temp in seaice_solve4temp.F (part
546        SOLVE4TEMP_LEGACY) of 271.20 (=previous value of celsius2K + default
547        value of SEAICE_freeze) by celsius2K+SEAICE_freeze so that seawater
548        freezing temp is consistent with value in seaice_growth.F ; this causes
549        differences at machine truncation level: update lab_sea AD output (3/4).
550    o pkg/seaice:
551      - mask (in exf_init_fixed.F) atemp,aqh,evap,precip,runoff,lwflx,areamask
552        and climsst/sss even when using seaice (to prevent calculation that might
553        use SST on land); does not affect any verification exp.
554      - apply mask to taux,tauy (in seaice_get_dynforcing.F); update output
555        of lab_sea.fd & lab_sea.hb87 and global_ocean.cs32x15.seaice_dynmix.
556    o pkg/seaice/seaice_growth.F: add mask to avoid non-zero ice thickness
557      over land (non-legacy code)
558    o vectorize salt_plume package:
559      - add extra code to salt_plume_frac and salt_plume_tendency_apply_s
560      - this code computes plumebk everywhere (also over land), thus requires
561        code to avoid divisions by zero and catch the case of kLev=Nr.
562      - efficiency of salt_plume_frac is still sub-optimal
563    o tools (genmake2):
564      - fix makefile NAME specification (option: -makefile NAME) by adding
565        "-f $MAKEFILE" in few places where it was missing including makedepend
566        command (contribution from Paul).
567    
568    checkpoint63i (2012/01/24)
569    o model/src:
570      - add factorized versions of some EOS code to find_rho.F,
571        define USE_FACTORIZED_EOS to turn it on (default for TARGET_NEC_SX)
572    o model/src:
573      - add celsius2K to namelist PARM01; remove unused recip_rhoNil from PARAMS.h;
574      - change default celsius2K from 273.16 to 273.15
575      - to keep results unchanged, add back old value of celsius2K in verification
576        exp. input*/data : aim.5l_cs, 1D_ocean_ice_column, lab_sea (fwd),
577         global_ocean.cs32x15(seaice) & cpl_aim+ocn(input_atm).
578    o model/src: add a little initialisation trick to find_rho.F and find_alpha.F
579      to make TAF generate vectorizable code
580    o pkg/seaice/seaice_evp.F: add code (copied from CICE) that avoids underflows.
581       Turn on by defining SEAICE_EVP_ELIMINATE_UNDERFLOWS. Most compilers
582       have flags that do this more efficiently.
583    o pkg/diagnostics/diagstats_calc.F
584      - for TARGET_NEC_SX fix the treatment of the scaling factor tmpFac=scaleFact
585    o pkg/obcs (with exch2):
586      - derive OB indices in overlap region from OB-InsideMask (in obcs_init_fixed.F)
587        and remove code (in obcs_readparms.F) which was based on EXCH of indices
588        (through buffer) and did not account for exch2 (e.g., CS-grid) topology.
589    o pkg/exf and seaice exp:
590      - change offline_exf_seaice.seaicetd test exp. to use default DIFF1 value (=0)
591        so that switching off area & heff advection flags does not affect results.
592      - change default EXF_LWDOWN_WITH_EMISSIVITY to #define in EXF_OPTIONS.h
593      - keep exp. seaice_obcs & 1D_ocean_ice_column(ad) unchanged (using #undef
594        EXF_LWDOWN_WITH_EMISSIVITY) and, using pkg/exf default emissivities, update
595        results of verification experiments: 1D_ocean_ice_column(fwd),
596        global_ocean.cs32x15.seaice(fwd+ad) & seaice_dynmix(ad), lab_sea (all 8)
597        and offline_exf_seaice (all 4).
598    o pkg/seaice:
599      - remove array YNEG, RIVER, TMIX (replaced by local var) from common block;
600        remove also areaNm1 & hEffNm1 when SEAICE_GROWTH_LEGACY is undef.
601      - fix bug: areaNm1 & hEffNm1 are needed in seaice_growth (SEAICE_GROWTH_LEGACY)
602        but were not filled when resp. SEAICEadvArea=F & SEAICEadvHeff=F and
603        not multi-dim advection;
604      - fix seaice_growth.F to compile with both SEAICE_GROWTH_LEGACY and
605        SHORTWAVE_HEATING #undef.
606    o optim: make Makefile more robust (?)
607    o pkg/obcs:
608      * fix treatment of obcs_read_pickup for TAF
609    o pkg/shelfice:
610      * add missing initialisation of num_shifwflx
611      * new adjoint verification exp. for isomip
612      * change Prandtl and Schmidt numbers from generic formulations
613        (in terms of model diffus. and visc.) to separate runtime
614        parameters, with Holland and Jenkins (1999) default values.
615    o pkg/exf (interpolation):
616      - extended input field (2 rows) near the N & S poles:
617        * fill in with the symetric value (when even Nb of data in longitude)
618        * add average value at the poles only for scalar quantities ; for vector
619          component interpolation, skip the averaging and keep duplicated values,
620          unless the 2 components have same location (uvInterp=T) in which case
621          interpolate the 2 components together using S/R EXF_INTERP_UV.
622      - new S/R EXF_INTERP_UV to interpolate the 2 components of a vector field
623        together: this allows to account properly for local orientation when
624        averaging at N & S pole.
625      - add CPP option EXF_USE_OLD_INTERP_POLE to recover old results regarding
626        exf-interpolation near N & S poles. Undef by default.
627      - add debug check/print on 1rst iter if debugLevel >=2.
628    o pkg/exf:
629      - change masking flags definition (no longer "parameter"), put them in
630        common block and set them in S/R EXF_INIT_FIXED.
631      - change recognized masking flag from s,u,v to c,w,s since the mask
632        to use (maskC,W,S) depends on position on model grid and has little to
633        do with scalar/vector difference; fix masking if using P-coordinates.
634      - fix masking of wind-stress (was wrong if interpolated or read on A-grid)
635        and update results of exp. global_with_exf (x2).
636      - fix setting of zenith-angle table when SHORTWAVE_HEATING is undef.
637    o pkg/obcs
638      - S/R obcs_calc_stevens: fix a small bug (gammat -> gammas where appropriate)
639    o pkg/exf (interpolation):
640      - assume periodicity in X only if input field cover full longitude range.
641      - improve search for lat. index (supposed to be faster, in ~log2(ny) steps,
642        and should vectorise).
643      - fix input lat of the 2 added row (in case we provide N.pole data).
644    
645    checkpoint63h (2011/12/30)
646    o pkg/seaice:
647      - change declaration of UVM from _RL to _RS in order to get B-grid
648        uIce,vIce monitor when _RS = real*4
649    o pkg/offline:
650      - new S/R OFFLINE_RESET_PARMS for resetting main-model params (switch off flags);
651      - compute vertical velocity if not read from file (switch on exactConserv
652        & staggerTimeStep);
653      - fix output of ptracer monitor iter & time for default PTRACERS_monitorFreq.
654    o verification:
655      - update grid-files (in tutorial_held_suarez_cs/input and fizhi-cs-32x32x40/input)
656        with grid-angle generated using "utils/matlab/cs_grid/cubeCalcAngle.m":
657        fix Pb in yG definition @ 2 missing corners (previously yG was averaged);
658      - update output of exp. global_ocean.cs32x15.viscA4 after changing
659        grid-file angles (used here for coriolis-3d);
660      - remove (or gzip) few files not needed to run fizhi-cs experiments.
661    o pkg/exf (vector interpolation):
662      - rotate vector component toward local grid-axis orientation using grid-angles
663        (stored in GRID.h) instead of locally computed rotation angle; keep old code
664        available with exf option EXF_USE_OLD_VEC_ROTATION (undef by default).
665    o pkg/seaice:
666      - allow to compile with exf options ALLOW_ATM_TEMP or ALLOW_DOWNWARD_RADIATION
667        undefined. Fix and remove the stop when ALLOW_RUNOFF is undefined.
668    o pkg/PKG_OPTIONS.h files:
669      - move #include "CPP_OPTIONS.h" just after #include "PACKAGES_CONFIG.h",
670        outside of the #ifdef ALLOW_THISPKG / #endif block.
671      - update verification/*/code/PKG_OPTIONS.h files.
672    o add a verification experiment (offline_exf_seaice/input.seaice) that test
673      the B-grid LSOR solver
674    o pkg/seaice: sort out emissivity and long wave radiation step 2:
675      - add emissivity for snow and ice as new run-time parameters
676        (unfortunately) that default to the corresponding exf values; this
677        changes results in most verification experiments so that for backward
678        compatibility these parameter have to be set explicitly to inconsistent
679        values (ugly);
680      - the exf-flag EXF_LWDOWN_WITH_EMISSIVITY then gets rid off the hard-wired
681        emissivities of 0.97 associated with lwdownloc in S/R seaice_solve4temp
682        until we agree how to handle this bug properly
683    o pkg/exf (interpolation):
684      - add a set of run-time param ({inputfield}_interpMethod), one for
685        each interpolated input field, to select the interpolation method
686        with a value of zero switching off the interpolation;
687      - print interpolation parameters to standard output;
688      - refine exf_check.F accordingly ; stop if USE_NO_INTERP_RUNOFF is defined
689        (to use instead runoff_interpMethod=0 in data.exf).
690      - simplify default setting of interpolation parameters (for all fields,
691        set position to match model grid cell-center position, leading to trivial
692        interpolation in case of regular Lat-Lon grid) and fix for the case of
693        non-uniform delY.
694    o pkg/exf/exf_radiation.F: add the factor ocean_emissivity to lwdown, for
695       within #ifdef EXF_LWDOWN_WITH_EMISSIVITY/#endif. Unless ocean_emissivity=1.
696       this factor is absolutely required, because the lw exitance (= out-going
697       long wave radiation) is emissivity*stefanBoltzmann*T^4 + rho*lwdown,
698       where the reflectivity rho = 1-emissivity for conservation reasons. Once
699       this is established, we can remove the CPP-Flag (if we want to).
700    o pkg/seaice:
701      - qualify a stop statement in S/R seaice_check: EXF_READ_EVAP and
702        ALLOW_BULKFORMULAE are only required if SEAICE_EXTERNAL_FLUXES is defined
703      - sort out emissivity and long wave radiation, step 1: make SEAICE_emissivity
704        what the name implies (and not emissivity*BoltzmannConstant), this means
705        the old default value of 5.5e-8 now means
706        5.5e-8/5.670e-8 = 0.97001763668430343479 as ocean_emissivity in
707        S/R exf_readparms
708      - FV-discretization of the B-grid LSOR solver, turn on with
709        SEAICE_LSRBNEW. This new solver also involves a slight re-organization
710        of the calling routine dynsolver, so that B and C-grid code look a
711        little more alike.
712      - fix index bugs in ostres.F (B-grid code)
713    o pkg/seaice/seaice_ocean_budget.F: change (unused) code to make it look better
714    o pkg/seaice/seaice_readparms.F: make ocean_emissivity*stefanBoltzmann the
715      default for SEAICE_emissivity, if useEXF; requires setting a wrong
716      parameter value in global_ocean.cs32x15/input.seaice/data.seaice for
717      backward compatiblity
718    o model/src: use sigmaR in calc_ivdc
719    
720    checkpoint63g (2011/12/16)
721    o pkg/seaice/seaice_growth.F:
722      fix heat conservation of the coupled ocean-seaice system.
723      when SEAICE_HEAT_CONSERV_FIX is defined, the mismatch of
724      solid vs liquid water treatment is resolved via QNET.
725    o pkg/seaice/seaice_growth.F:
726      add missing term for sublimation in saltFlux, which was breaking conservation.
727    o pkg/seaice/seaice_model.F:
728      Remove this patholigical case treatment in evolution branch,
729      where it is un-necessary and breaks conservation.
730      Update global_ocean.cs32x15/results accordingly for
731      output.seaice.txt output_adm.seaice.txt and output_adm.seaice_dynmix.txt
732    o model/src:
733      useRealFreshWaterFlux: remove masking of EmPmP (using maskInC) in
734      external_forcing_surf.F and apply mask directly in S/R SOLVE_FOR_PRESSURE.
735    o pkg/obcs:
736      modify Stevens boundary conditions so that S/R obcs_calc_stevens computes
737      tendency for temperature and salinity that is then applied to update
738      theta and salt in S/R obcs_apply_ts; this requires proper masking of all
739      horizontal advection and diffusion contributions on the boundary (in
740      S/Rs gad_advection, gad_calc_rhs, gmredi_rtransport, gmredi_calc_diff), and
741      removing the mask in S/R timestep_tracer. The advantage of this approach is
742      that the updated tracer values include contributions from the surface
743      forcing and vertical diffusion.
744      This modification changes exp4.stevens because of vertical diffusion.
745    o model/src:
746      change non-curvilinear grid setting to also work with exch2 + blank tiles:
747      - move delX,delY to new header file (SET_GRID.h) and adjust length to 1rst
748        face dimensions.
749      - new S/R INI_LOCAL_GRID to define model tile-local grid (using same units
750        as delX,delY) and called from S/R INI_CARTESIAN_GRID, INI_CYLINDER_GRID
751        and INI_SPHERICAL_POLAR_GRID.
752      change test-experiment global_ocean.90x40x15:
753      - split the domain in many more tiles (9x4 tiles of 10x10 each);
754      - switch to exch2 and remove 1 blank-tile (but only for MPI test).
755      - update results of both test (std & dwnslp).
756    o pkg/diagnostics/diagstat_calc.F: fix problem with non-initialised halos in
757       tmp-fields for TARGET_NEC_SX at the cost of extra loops and less vectorisation
758    o model/src:
759      - take sigma-coords related code out of update_etah.F into new S/R UPDATE_ETAWS
760        and fix initialisation when using sigma-coords.
761    o model/src:
762     - improve Gael's changes from Jan 14, 2011 "addition of an 'update' of hfacc etc.
763       to their current value at the beginning of forward_step.F": add a new run-time
764       switch "doResetHFactors" (default=false) and use it to do (or not) the resetting.
765     - set doResetHFactors=T in the following test exp:
766        global_ocean.90x40x15/input (rStar) & input.dwnslp (linFS),
767        global_ocean.cs32x15/input.seaice (rStar), hs94.cs-32x32x5/input.impIGW (linFS)
768        and tutorial_global_oce_in_p (nonLinFS in p)
769    o pkg/ecco
770      - added IES cost term
771    o verification/advect_xz
772      - scale down the depth by 1/100 (from 200 km to just 2.km)
773      - add secondary test using divergent flow, r-star and implicit vertical advection.
774      - add note (check_conserve_TS.txt) and matlab script to check global
775        conservation of T & S with NonLin-FreeSurf and Adams-Bashforth.
776    o pkg/rbcs:
777      - add missing relaxUFile & relaxVFile in namelist (in rbcs_readparms.F).
778    o pkg/obcs (Stevens BCs):
779      - fix various problems in the phase speed computations of the Stevens
780        boundary conditions:
781        - sign error for western and southern boundaries,
782        - time tendencies were underestimated by factor of dTracerLev and some just
783          zero (for multidim advection schemes) -> now estimate time tendencies
784          from difference between previous (n) time level and the one before (n-1);
785          this requires storing a field per tracer per boundary, also in the pickup
786          files.
787        - replace deltaTmom in cflMer/Zon computation with dTracerLev
788        - set default phase velocity to cflMer/Zon
789      - update verification experiment exp4.stevens
790    o pkg/generic_advdiff (implicit_r):
791      - fix implicit vertical advection conservation with AB and/or NonLin-FreeSurf
792        (remove Tr*d/dz(w) in gad_implicit_r.F and add it in gad_calc_rhs.F);
793      - fix implicit vertical diffusion or advection with NonLin FreeSurf
794        (was using current recip_hFacC instead of future recip_hFacC): set future
795        recip_hFac in thermodynamics.F and pass & use it in all vertical implicit
796        solver S/R ;
797      - fill diagnostics of vertical advective fluxes (computed from tendency)
798        when using implicit vert. advection;
799      - update output of exp that uses NonLin-FreeSurf & implicit vertical diffusion:
800         global_ocean.90x40x15 (fwd+AD), global_ocean.cs32x15 (4 fwd +4 AD),
801         tutorial_global_oce_in_p (fwd), tutorial_tracer_adjsens (AD)
802         and cpl_aim+ocn (used in ocean); to be fixed: bottom_ctrl_5x5.
803    o pkg/diagnostics:
804      - add diags for T & S tendency which goes through Adams-Bashforth.
805    
806    checkpoint63f (2011/11/30)
807    o pkg/obcs/obcs_calc_stevens.F:
808      - join some loops to reduce number of if-statements
809      - fix a bug in code for northern and southern boundaries.
810    o pkg/seaice/seaice_init_varia.F
811      - undo resetting UVM=0 that has slipped in unnoticed in r1.49 and
812        caused zero ice-velocities for the B-grid code
813    o pkg/seaice/seaice_init_fixed.F
814      - fix a bug in the initialisation of the second metric terms
815        k2AtC and k2AtZ: k2AtC was set to the value of k2AtZ and k2AtZ was 0.
816      - this affects all seaice configurations with useCurviLinearGrid = .true.
817        and SEAICEuseDynamics = .true. (default) and SEAICEuseMetricTerms
818        = .true. (default)
819      - the only verification experiment affected is global_ocean.cs32x15:
820        icedyn, seaice, and seaice_dynmix (AD)
821    o pkg/thsice/thsice_diagnostics_state.F
822      - only for TARGET_NEC_SX: initialise all of tmpFld, so that overlap does
823        not contain garbage that can lead to surprises in diagstats_calc.F
824    o model/src:
825      - move bi,bj loops inside INTEGR_CONTINUITY ;
826      - call INTEGR_CONTINUITY directly from forward_step.F
827        (previously called from momentum_correction_step.F)
828      - call UPDATE_ETAH from integr_continuity.F and update initialise_varia.F,
829        forward_step.F and pkg/ecco/the_main_loop.F
830    o model/src/do_oceanic_phys.F:
831      - reset addMass to zero only if useICEFRONT ;
832      - separated k-loop for rhoInSitu calculation ;
833      - add 2 diagnostics for wVel*delta^k(Rho) at constant pressure (= WdRHO_P)
834        and at constant T,S (= WdRHOdP);
835      NOTE: change diagnostics WRHOMASS : this is now simply the Vertical transport
836        of In-Situ Density (Anomaly) (=wVel*rho^bar-k) (previously was Vertical
837        transport of locally-referenced potential density);
838        to recover old diag: (WRHOMASS)_old = (WRHOMASS)_new -1/2 * (WdRHOdP)
839    o gluemnc:
840      - replace ncrcat with ncks when adding variables to *.glob.nc
841      - change the way variables without record dimensions are handled so that
842        files that have variables with and without record variables can be glued:
843        add a record dimension with a new unique name to be able to differentiate
844        between variable with and without a-prior record dimensions. Remove
845        this record dimension before adding the variable to the *.glob.nc file.
846        This procedure automatically works also for grid.*.nc files that do not
847        have any record dimension.
848    o verification/cpl_aim+ocn:
849      - generate new reference output on baudelaire (gfortran, mpich2) (previously
850        from old aces-grid cluster, ao + ifort) and update 'run_cpl_test' script.
851    o pkg/obcs/obcs_calc_stevens.F:
852      - add code for northern and southern boundaries.
853      - reorder some loops to save some operations and so that drFBar can be scalar
854    o model/src:
855      - re-arrange extrapolation calculation in Adams-Bashforth S/R (affects machine
856        truncation) and add diagnostics for Adams-Bashforth tendency increment.
857      - update test-exp. AD output:
858        1D_ocean_ice_column, bottom_ctrl_5x5, lab_sea.noseaicedyn, obcs_ctrl;
859      and FWD output: exp4 (x3), fizhi-cs-32x32x40, fizhi-cs-aqualev20,
860        front_relax (x3), global_ocean.90x40x15 (x2), global_ocean.cs32x15 (x5),
861        global_ocean_ebm, ideal_2D_oce, internal_wave, isomip (x3), lab_sea (x4),
862        matrix_example, MLAdjust (x5), natl_box (x2), tutorial_advection_in_gyre,
863        tutorial_global_oce_in_p, tutorial_global_oce_latlon and
864        tutorial_plume_on_slope.
865    o pkg/diagnostics/diagstats_calc.F: add special code for TARGET_NEC_SX
866      that vectorises. This code uses 3 extra 2D fields, F90 array assignments
867      and F90 intrinsic routines SUM, MINVAL, MAXVAL, but since TARGET_NEC_SX
868      does not even come with an F77 compiler anymore, this should not be
869      a limitation
870    
871    checkpoint63e (2011/11/06)
872    o pkg/seaice adjoint of LSR:
873      - substantially rework STORE dirs.
874      - add new flag SEAICE_LSR_ADJOINT_ITER and parameter SOLV_MAX_FIXED
875        this flag will do SOLV_MAX_ITERS but only store SOLV_MAX_FIXED fields
876        and only perform SOLV_MAX_FIXED adjoint iters.
877        If flag SEAICE_LSR_ADJOINT_ITER is undef-ined, the store in the iteration
878        always goes to same record, meaning that the last forward field will be
879        the one used in the adjoint - an approximation.
880      - now produces non-zero LSR-related gradients, and acceptable gradients for
881        An's zonal (x-z) test case (to be checked in)
882      - lab_sea: produces acceptable gradients for lab_sea with forward/backward LSR
883        (but these are screwed up by the thermodynamics in the first place);
884        reduce from 4 to 3 timesteps to avoid t.d. issue as temporary solution;
885        output_adm.txt also reflects changes to seaice_lsr
886      - global_ocean.cs32x15:
887        * the "default" input_ad.seaice has been re-defined to always exclude dynamics
888          (output_adm.seaice.txt was updated)
889        * new input_ad.seaice_dynmix tests a forward LSR / backward free-drift
890          (output_adm.seaice_dynmix.txt)
891    o test-exp. exp4+stevens:
892      - switch off pTracers and nonHydrostatic (restart problems with NH); update output
893    o pkg/seaice (lsr solver):
894      - put coriolis term into FORCEX,Y (as in seaice_evp.F; previously in rhsU,V only);
895        update output (change truncation) of FWD test exp lab_sea & global_ocean.cs32x15
896      - fix SEAICEuseFREEDRIFT for new OBCS version (ndef OBCS_UVICE_OLD)
897      - new parameter "LSR_mixIniGuess" allows (if=2,4) to mix free-drift solution
898        into initial guess for linearised solver; use weight ~ (1/err)^2,4.
899      - compute (with new S/R) and print initial (+ free-driff sol. if available)
900        and final residual of linearised system.
901    o pkg/pp81: add diagnostics for vertical eddy viscosity and diffusivity
902      (requires new subroutines pp81_init_fixed.F/pp81_diagnostics_init.F)
903    o pkg/obcs: Stevens BCs (still only for east and west)
904      - fix Stevens BCs by using intermediate velocities of previous
905        time step as "baroclinic" contribution rather velocity of one grid cell
906        inside the boundaries; more consistent but makes the entire treatment
907        more complicated, requires new pickup files and two new S/Rs:
908        obcs_copy_uv_n and obcs_save_uv_n
909        keep old version with flag OBCS_STEVENS_USE_INTERIOR_VELOCITY
910        (undefined by default)
911      - silently move computation of some grid factors into separate loops to
912        save some recomputations
913      - add a hack for non-linear free surface
914      - add a verification experiment to exp4 that tests this code
915    o make gluemnc/xplodemnc work with (moron) non-GNU shell tools
916    
917    checkpoint63d (2011/10/25)
918    o pkg/obcs + seaice-dynamics:
919      - new implementation calls OBCS_APPLY_UVICE (in seaice_dynsolver.F) before
920        solving for uIce,vIce and prevent SEAICE_LSR or SEAICE_EVP to modify OB
921        values (consistent with an implicit method).
922      - add option OBCS_UVICE_OLD (in OBCS_OPTIONS.h, defined by default) to
923        return to older implementation (same results as before); note that none of
924        the "experimental" OBCS_SEAICE options are implemented in the new version.
925      - switch test exp. seaice_obcs to use new version (update output).
926    o pkg/seaice:
927      - add few stop (B-grid & CS-exch, B-grid & obcs, AUTODIFF & SEAICE_maskRHS)
928      - add parenthesis in Water-Ice drag calculations (evp & lsr);
929      - in seaice_lsr.F, simplify and fix AA3 setting in case sNx or sNy=1;
930        and fix case SEAICE_waterDrag=0 (but unstable if no or little seaice)
931      - update output of test exp lab_sea that uses evp or lsr (fwd+ad)
932        and global_ocean.cs32x15 (icedyn & seaice fwd+ad).
933    o pkg/layers:
934      - Include potential density as new coordinate (Thanks to David Munday)
935    o pkg/dic:
936      - Remove subroutine CALC_PCO2_APPROX_CO3 from carbon_chem.F and add
937        carbonate computation/output to CALC_PCO2_APPROX
938    o pkg/generic_advdiff
939      - make TAF generate code that vectorizes:
940        gad_dst3fl_adv_*.F, gad_u3c4_impl_r.F
941    o model/src:
942      - improve vectorization also for adjoint code of
943        solve_tridiagonal and solve_pentadiagonal. As this requires up to
944        5 new 3D-fields, this code is only turned on for the combination of
945        ALLOW_AUTODIFF_TAMC and TARGET_NEC_SX. Also remove error message
946        for singular matrix check (only for TARGET_NEC_SX).
947      - remove hard-wiring of CPP-flag ALLOW_SOLVERS_KLOOPINSIDE to
948        ALLOW_AUTODIFF. This flag now needs to be set outside of
949        solve_tri/pentadiagonal.F
950    o pkg/exf:
951      - fix previous modif in exf_readparms.F (revision 1.66: treatment of
952        optional namelist EXF_NML_OBCS).
953      - add many debug-print (to trace down where pkg/cal error msg comes from)
954    o pkg/mom_vecinv/mom_vi_hdissip.F
955      - rearrange loops so that vectorization is improved and in particular
956        the adjoint routine vectorizes. The code is a little longer now, but I
957        think easier to read.
958        Note: CPP-flag MOM_VI_ORIGINAL_VISCA4 is not tested.
959    o pkg/seaice:
960      - allow to specify initial seaice velocity from files (uIceFile,vIceFile)
961    o pkg/exch2:
962      - alternative code (without tile x tile matrix) for cumulated (global) sum;
963        used as default; keep using matrix version in adjustment.cs-32x32x1.
964    o tools/build_options:
965      - after merging some MPI and/or multi-threads specific optfiles so that
966        the modified default optfile support both built (using genmake2 -mpi
967        for the MPI built, using genmake2 -omp for OpenMP built),
968        move now obsolete optfiles to tools/build_options/unsupported/
969       (add copy of email sent to support list in doc/optfiles_changes.txt)
970    
971    checkpoint63c (2011/09/28)
972    o pkg/ebm:
973      - fix ebm_zonalmean.F for several procs in Ydir (nPy > 1); update output of
974        test exp. global_ocean_ebm (affects machine truncation, 12 digits for cg2d)
975    o pkg/seaice (SItracer pickup)
976    * Simple code for pickup of SItracer fields (#define ALLOW_SITRACER)
977      To be done:
978      - thorough testing of missing fields in S/R seaice_read_pickup
979      - thorough matching between generic tracers and specific fields used
980        (e.g. volume-weighted age, area-weighted age, salinity, ...)
981    o pkg/grdchk:
982      - all procs calculate and print finite-difference gradient (for testreport)
983      - change description output used by testreport;
984      - AD testing: also compare and report Finite-difference gradient;
985        => update all output_adm*.txt
986    o test exp. global_ocean_ebm:
987      - switch back useRealFreshWaterFlux (no problem anymore with run-off);
988        and turn on exactConserve; update (fwd) output.
989    o pkg/seaice (LSR):
990      - print to STDOUT number of solver iterations at SEAICE_monFreq interval.
991      - modify solver to deal cleanly with u/v switch at face edges (CS-grid):
992        * identical results with non-CS topology (but save up to half of EXCH calls)
993        * no much changes in cs-32 verification tests since no ice at face edges
994         (differences due to convergence criteria, since nb of iterations changed)
995        * expect some differences on lat-lon-cap grid.
996        update FWD results of global_ocean.cs32x15 test exp. (icedyn & seaice)
997    o pkg/exch2:
998      - add new CPP option to disable Cumul-Sum matrix (to save storage when using
999        many tiles); until alternative coding is added, just add a stop.
1000    o pkg/kpp:
1001      - move ptracer/salt correction to KPP diffusivity from calc_3d_diffusivity.F
1002        to S/R KPP_CALC_DIFF_PTR (+ add tracer-index to argument list).
1003    o optfiles:
1004      - merged few MPI specific (*+mpi*) and multi-threads specific (*+mth) optfiles
1005        into corresponding standard one, which now support different build:
1006        (when using "genmake2 -mpi" for MPI built, "genmake2 -omp" for OpenMP built)
1007      - add "darwin_amd64_gfortran" optfile (initially from Constantinos, tested by Gael)
1008    o pkg/obcs (seaice):
1009      - add missing EXCH for uIce,vIce after applying OBCS;
1010      - remove S/R EXF_SWAPFFIELDS_X/Y , disable S/R EXF_SET_OBCS_X/Y by adding
1011        argument = number of levels to S/R EXF_SWAPFFIELDS_XZ/YZ and S/R
1012        EXF_SET_OBCS_XZ/YZ ; update obcs_exf_load.F;
1013      - fix EXF_SET_OBCS_XZ/YZ for multi-threaded (assuming loaded arrays are shared)
1014      - verification exp. seaice_obcs: split domain in 2 tiles ; add SIZE.h_mpi
1015        and eedata.mth for MPI and mutlti-threaded testing.
1016    o pkg/flt:
1017      - make FLT EXCH working with multi-threads (and MPI + multi-threads);
1018      - use buffer for floats IO (trajectories & profiles); size set in FLT_SIZE.h;
1019      - fix pickup and trajectories + profiles output with multi-threads;
1020      - add parameter to select group of fields to write along trajectory and
1021        profile (default unchanged);
1022      - only call PORT_RAND* function when flt_noise <> 0;
1023      - add multi-threaded test for verification exp. flt_example.
1024    o eesupp/src:
1025      - fix S/R ALL_PROC_DIE for MPI+multi-threads.
1026      - USE_OMP_THREADING: check that number of threads (from eedata) matches
1027        actual number (from env.var. setting).
1028    o pkg/ebm:
1029      - fix multi-threading in ebm_area_t.F ; clean-up EBM.h header file.
1030      - add multi-threaded test for verification exp. global_ocean_ebm
1031    
1032    checkpoint63b (2011/08/29)
1033    o pkg/ebm:
1034      - fix sign of runoff;
1035      - update directly forcing fields (Qnet,EmPmR) to use standard
1036        external_forcing_surf.F (remove ebm_forcing_surf.F);
1037      - avoid loading forcing fields a 2nd time (1rst time from ini_forcing.F);
1038      - set either tauThetaClimRelax (in data) or tauThetaZonRelax (in data.ebm)
1039        and apply relaxation towards corresponding SST field (2-D map or ZonAver).
1040      - update global_ocean_ebm parameters file data and update output (fwd+ad).
1041    o verification/matrix_example:
1042      - split domain in 8 tiles (2x4); add SIZE.h_mpi and eedata.mth for
1043        MPI and mutlti-threaded testing.
1044    o pkg/matrix:
1045      - change name of S/R MATRIX_INIT to S/R MATRIX_INIT_VARIA ;
1046      - fix for multi-tiles (add bi,bj indices to exp/impMatrixCounter);
1047      - fix for multi-threaded (remove DATA statement);
1048      - use standard DIFFERENT_MULTIPLE function;
1049      - add MATRIX_OPTIONS.h
1050    o verification/matrix_example:
1051       To allow to split the domain in several tiles, change the domain size
1052        from 31x31 to 32x32 by adding 1 row (on Southern side) + 1 column (on
1053        Western side) of land points.
1054    o (*_)write_pickup:
1055      - fix few bugs in mypackage_read/write_pickup.F
1056      - in MDS_WR_METAFILES calls, replace "myTime" by a local copy into
1057        array of length 1 (was caught by compiler syntax-check).
1058    o pkg/diagnostics (velocity potential solver):
1059      - fix initialisation of main diagonal matrix (for overlap values)
1060    o tools/build_options:
1061      - towards single optfile for MPI and non-MPI built: merge few +mpi optfile
1062        into previously non MPI one (linux_am64 pgf77,open64,pathf90,ifort11)
1063      - linux_amd64_gfortran: merge +mpi_generic version into standard optfile:
1064        * move IEEE flags to DEVEL section; take IEEE flags from +mpi_generic ;
1065        * FAST case: for now, keep -O3 with ini_masks_etc.F in NOOPTFILES list;
1066        and use "-devel" testreport option for standard testing on baudelaire.
1067    o pkg/grdchk:
1068      - Assume that all gradient-check position are within the same tile
1069        corresponding to global indices (iGloTile,jGloTile) and that
1070        positions (i,j indices or nbeg) are local to this tile;
1071      - set tile local-indices and proc. number according to tile global-indices;
1072      - remove grdchkwhichproc from namelist (retired param);
1073      - send adjoint gradient to all procs so that all procs print it to STDOUT;
1074      - switch on MPI test for global_ocean.90x40x15 AD test experiment.
1075    o adding package bbl (Bottom Boundary Layer)
1076      description in MITgcm/pkg/bbl/bbl_description.tex
1077      example/test experiment in MITgcm_contrib/bbl
1078    o adjoint verifications
1079      - changed 5 experiments to multi-tiles
1080        * global_ocean.90x40x15
1081        * obcs_ctrl
1082        * offline_exf_seaice
1083        * tutorial_dic_adjoffline
1084        * tutorial_tracer_adjsens
1085        changed reference output for those that crossed tile boundaries
1086        (changed choices of gradient check positions)
1087      - with same tiling, switch on MPI test for the last 4 (add SIZE.h_mpi)
1088      - temporary bug fix in grdchk_loc.F for obcs
1089    o genmake2 & testreport
1090      - add target "obj" (just for OBJFILES files) to Makefile;
1091      - add option to specify FEXTRAFLAGS on command line.
1092    o pkg/mypackage:
1093      - remove bi,bj arguments from argument list of S/R MYPACKAGE_CALC_RHS
1094    
1095    checkpoint63a (2011/08/02)
1096    o pkg/diagnostics (velocity potential):
1097      - fix velocity-potential calculation when using OBCS: balance net inflow
1098        at each level (new S/R OBCS_DIAG_BALANCE).
1099      - fix some of the problems with OBCS in stream-function calculation.
1100    o pkg/exf/exf_readparms.F
1101      - make treatment of optional namelists (EXF_NML_04, EXF_NML_SGRUNOFF,
1102        EXF_NML_OBCS) more consistent, so that you need not have these lists
1103        in data.exf when they are not used.
1104    o optim/optim_readdata.F:
1105      - add some output about obcs variables that might help debugging
1106      - add a check about nvarlength
1107    o pkg/ctrl: once again, fix computation of endrec in s/r ctrl_init_rec
1108    o pkg/diagnostics (velocity potential):
1109      - fix mask for OBCS (still problems in stream-function with OBCS);
1110      - add specific parameter (default = main code CG2D params) for solver;
1111      - in case of poor convergence, use solution corresponding to lowest residual.
1112    o pkg/seaice/seaice_growth.F: small changes that permit vectorizable
1113      adjoint code. In general statements like tmpscal=fld(i,j) are problematic
1114      and should be avoided where possible.
1115    o model/src (rStar):
1116      - include r* effect on reference-state (PhiRef) in totPhiHyd
1117        (so that it's really the potential anomaly at the cell center);
1118        affect solution only if z* with full pressure in EOS.
1119      - test-exp global_ocean.90x40x15: reduce viscA4 (was not stable) and
1120        update output (because of z* in totPhiHyd and viscA4 changes);
1121      - keep the previous diagnostics as "PHIHYDcR" (closer to potential anomaly
1122        @ constant r) until interpolation at constant r is implemented.
1123    o pkg/diagnostics
1124      - fix RCENTER diagnostics in case cell center is not at interface middle
1125    o add code for TEOS-10 (www.teos-10.org, McDougall et al. 2011). Use
1126      this eos with eosType = 'TEOS10', in data (PARM01). This eos implies
1127      that THETA and SALT are "conservative temperature" and "absolute
1128      salinity"
1129    o pkg/ctrl
1130      - fix computation of endrec in s/r ctrl_init_rec
1131      - ctrl_pack/unpack_*: remove unused variables and some obsolete code
1132    o pkg/seaice/seaice_growth.F
1133      - fix recomputation with FENTY_AREA_EXPANSION_CONTRACTION code,
1134        remove then obsolete STORE directives
1135      - fix STORE directives for tice and tices, so that only the
1136        appropriate part of the fields are stored (and not the entire
1137        field); update global_ocean.cs32x15.seaice AD output.
1138      - cosmetic changes: adjust CPP flags and indentation for better
1139        legibilty
1140    o pkg/autodiff: add mnc-output of adBottomDragFld (code contributed by
1141      Chris Wilson)
1142    o pkg/gmredi:
1143       Add Sub-Meso Eddies parameterisation from Baylor (for now, disabled with TAF),
1144       and test it in verification exp. "front_relax.bvp" (update output.bvp.txt)
1145    
1146    checkpoint63  (2011/07/11)
1147    o pkg/exch2:
1148     - rename+move: nTiles in W2_EXCH2_PARAMS.h --> exch2_nTiles in W2_EXCH2_TOPOLOGY.h
1149     - exch2 version of Cumul-Sum routine: S/R W2_SET_MAP_CUMSUM set up the
1150       (2*nTiles)x(nTiles) Cumul-Sum matrix and Master Proc collects all tiles X,Y
1151       increments, calculates Cumul-Sum @ tile origin and sends results to each tile.
1152    o pkg/diagnostics:
1153     - deal with pairs of post-processed diags which are computed together; in
1154       particular, re-order list of diags within 1 file to save 2nd computation.
1155     - add S/R to compute velocity stream-function (called after velocity-potential
1156       calculation) from divergence free transport -> new diagnostics "PsiVEL".
1157     - add parameter to select grid-point location where PsiVEL == 0.
1158    o eesupp/src:
1159       new S/R to calculate cumulated sum on tiled array, corner grid-cell location
1160       (specific S/R needed with exch2 topology - for now, just print an error msg)
1161    o pkg/shelfice
1162     - Implement friction velocity-dependent transfer coefficients following
1163       Holland and Jenkins, JPO, 1999
1164       Original code by M. Losch with small modifs.
1165       Enable with CPP option SHI_ALLOW_GAMMAFRICT
1166       and runtime flag SHELFICEuseGammaFrict
1167    o verification lab_sea & global_ocean.cs32x15:
1168     - use tools/xmakedepend (instead of cyrus_makedepend, in genmake_local):
1169       does not miss some dependencies (but is slower) and also works with many files
1170       (default makedepend limitation for AD built).
1171     - use cyrus_makedepend in adjustment.128x64x1 (so that it still tested).
1172    o pkg/diagnostics:
1173     - add run-time parameter "useMissingValue" (def=False) to fill land-point
1174        (i.e., where mask=0) with MissingValue ; used only in MNC output file.
1175       This replaces CPP-option DIAGNOSTICS_MISSING_VALUE.
1176     - Extend the use of "missing_value" setting from data.diagnostics for the case
1177       of counter-diagnostics (where fraction-weight is zero). This applies both to
1178       MNC and MDS output files.
1179    o pkg/seaice/seaice_growth.F:
1180      - add 'a priori' cap of latent heat flux based on actual mass considerations
1181        when SEAICE_ADD_SUBLIMATION_TO_FWBUDGET is used in conjunction with the
1182        non-legacy seaice_solve4temp.
1183      - add diagnostic of the residual sublimation freshwater flux (the freshwater
1184        flux taken from the ocean if the total actual latent heat fluxes exceed
1185        the maximum)
1186      - remove the CPP switch around the *_FWbySublim unit change and move diagnostic
1187       fill for SIatmQnt, SIfwSubl, SIatmFW to the end of seaice_growth.F.
1188      - add diagnostic of the actual sublimation freshwater flux (that is 0. ifndef
1189       SEAICE_ADD_SUBLIMATION_TO_FWBUDGET) and of the latent heat flux (evap+sublim).
1190      - bug fix : frWtrAtm needs a_FWbySublim ifdef SEAICE_ADD_SUBLIMATION_TO_FWBUDGET.
1191      - bug fix : missing part to Martin's r_FWbySublim pathological case fix.
1192    o verification 1D_ocean_ice_column:
1193       made model domain truly 1x1x23 instead of 5x5x23 with only center cell (3,3,:) wet
1194       update results
1195    o pkg/diagnostics:
1196     - Implement setting of "Post-Processed" diagnostics (corresponding to gdiag(5)='P')
1197       which are not filled-up but computed from other diags ; In this case, the mate
1198       diag points to the primary (filled-up) diag to used for post processing.
1199     - Update Velocity-potential computation using post-processed diag framework.
1200     ==> Change the ordering of fields and time-periods in MDS output file
1201       when using periodic averaging: now writes one time record with the full set
1202       of fields for this time period, then the next time reccord (it used to be
1203       one field with the full set of time records then the next field).
1204         Note: this is now similar to NetCDF (MNC) output file. <==
1205    
1206    checkpoint62z (2011/06/21)
1207    o adjoint monitor:
1208     - Add adjoint monitor output for packages exf, seaice
1209       and update relevant testreport output
1210    o pkg/seaice:
1211     - re-order diags inits so that they appear in order in available_diagnostics.log
1212     - added diags: hsnow thermo. rates of change, area preceeding ridiging process,
1213       area/heff/hsnow preceeding thermodynamic growth/melt.
1214     - modified diag: SIdA; output actual effect, as the description states.
1215     - modified description: SIqneti, SIqneto, SIuheff, SIvheff, SIdAb*, HSNOW.
1216     - retired redundant diags: SIyneg, SIfice, SIsnwice, SIthdgrh.
1217       (SIyneg->SIdHbOCN; SIfice->SIdHbATC; SIsnwice->SIdHbFLO;
1218        and SIthdgrh->SIdHbOCN+SIdHbATC+SIdHbATO)
1219     - modified diags (2) : switch all SIdA*, SIdH*, SIdS* from delta to rates.
1220     - added diagnostics for seaice generic tracers (SItr*).
1221     - added SItrUnit and SItrNameLong run time param (for SItr* diags).
1222     - in diag names, replaced 'PrTh' abbrev. of 'preceeding thermo' with 'PT'.
1223     I. Fenty: 18-Jun-2011:
1224     Minor changes to seaice package:
1225     1) Retired old variables (A22, SEAICE_lhsublim, areaMax, areaMin, hiceMin) and
1226        added some new ones (SEAICE_area_reg, SEAICE_hice_reg, SEAICE_area_floor)
1227       - Differentiated "regularization variables" from "floor variables"
1228        * areaMin became SEAICE_area_reg (old A22) and SEAICE_area_floor
1229        * hiceMin became SEAICE_hice_reg (old hiceMin)
1230          (with _reg meaning regularization variable)
1231       - SEAICE_lhSublim becomes lhSublim, the sum of SEAICE_lhEvap and SEAICE_lhFusion
1232        so as to ensure energy conservation when going between phases
1233      - A22 was not used anywhere
1234     2) Changed regularization procedure for heffActual and hsnowActual to ensure
1235        well-boundedness and smooth adjoint in seaice_growth.F
1236     3) Fixed a bug where seaice_solve4temp would not recognize ice-free grid cells
1237        because the old regularization always set heffActual >= 0.05 cm
1238     4) Changed the model so that the default behavior is to put a small (10^-5) "floor"
1239        on AREA when HEFF > 0.
1240      - went from requiring ALLOW_PRECLUDE_INFINITESIMAL_AREA to be defined to
1241        requiring that DISABLE_AREA_FLOOR *not* be defined
1242     Affected verifications:
1243      - 1D_ocean_ice_column (output.txt output_adm.txt)
1244      - global_ocean.cs32x15 (output.seaice.txt output_adm.seaice.txt)
1245    o pkg/diagnostics:
1246      - move MNC code from diagnostics_out.F into new diagnostics_mnc_out.F (2 S/R).
1247      - rename S/R GETDIAG to DIAGNOSTICS_GET_DIAG and change type of 1rst argument
1248        (was _RL, now integer) with option = 0 to retrieve all levels.
1249      - add pieces of code to compute velocity potential at each level (new diagnostics
1250        PhiVEL, works only when UVELMASS & VVELMASS are also turned on);
1251        for now, using same params as CG2D (target-resisual, max Nb of iter ...).
1252      - fix few issues with counter diagnostics in diagnostics_setdiag.F &
1253        diagstats_setdiag.F (if diagnostic counter is itself a counter diag)
1254        and in diagnostics_fract_fill.F (do not need a valid pointer for the
1255        diagnostics counter-mate); check that definition of counter-diagnostic
1256        includes a valid counter-mate (in diagnostics_set_levels.F).
1257    o model/src (rStar):
1258      - add rStar scaling factor in diags_phi_hyd.F (similar to calc_grad_phi_hyd.F);
1259        affect solution only if z* with full pressure in EOS;
1260        update output of test-exp global_ocean.90x40x15.
1261    o pkg/seaice:
1262      - introduce siEps=1e-5 parameter
1263      - use areaMax in AREA update (part 4), consistent with ridging step (part 2.5).
1264      - re-organize SEAICE_ADD_SUBLIMATION_TO_FWBUDGET code.
1265      - introduce ALLOW_SITRACER and seaice_tracer_phys.F to handle generic seaice tracer.
1266        For now it covers, and was tested for, ice salinity and age (attached to HEFF),
1267        as well as ice cover age and ridging index (attached to AREA).
1268        For now the run time parameters (in data.seaice/SEAICE_PARM03) are
1269        SItrName (e.g. 'age') and SItrMate ('HEFF', which is the default, or 'AREA').
1270        Up to SItrMaxNum=3 tracers can be used simultaneously.
1271    o pkg/salt_plume:
1272      -introduce SPsalFRAC run time parameter that sets the fraction of the
1273       salt by-product of ice growth (SPsalFRAC*(1-SIsalFRAC)*salt typically)
1274       that gets vertically redistributed (fluxed down) by pkg/salt_plume.
1275    o model debug options:
1276      - Switch reading of debugMode from S/R INI_PARMS (parameter file "data", stored
1277        in PARAMS.h) to S/R EESET_PARMS (parameter file "eedata", stored in EEPARAMS.h).
1278      - Refine debug-msg printing selection (3 new levels):
1279        debugMode  : controls printing of debug messages (sequence of S/R calls).
1280        debugLevel : controls printing of algorithm-relevant auxiliary/debug messages
1281         debLevZero =  0 ; /* level of disabled aux. msg printing */
1282         debLevA =  1 ; /* level of minimum  aux. msg printing */
1283         debLevB =  2 ; /* level of low aux. print (report read-file opening)*/
1284         debLevC =  3 ; /* level of moderate debug prt (most pkgs debug msg) */
1285         debLevD =  4 ; /* level of enhanced debug prt (add DEBUG_STATS prt) */
1286         debLevE =  5 ; /* level of extensive debug printing */
1287        New debugLevel default: with default debugMode value (=F),
1288          = 2 (debLevB) or = 1 (debLevA) in case ALLOW_AUTODIFF is defined.;
1289          and if debugMode=T, default debugLevel = 4 (debLevD).
1290        Relation with previous settings:
1291         debLevB (=2) corresponds to former debLevA (=1)
1292         debLevD (=4) corresponds to former debLevB (=2)
1293        Note:
1294         a) if debugLevel=0, skip WRITE_GRID call when nIter0 > 0 (same as before);
1295         b) default debugLevel=1 is convenient in AD runs (avoid many file opening msgs);
1296            to recover previous default, set debugLevel=2 (e.g. AD-test hs94.1x64x5)
1297      - Add new parameter (printResidualFreq, read from PARM02 namelist) to print
1298        detailed CG solvers convergence; off (=0) by default, except if debugLevel=5.
1299    o pkg/obcs:
1300      - change OBCSfixTopo default from True to False (should not change the results);
1301        keep OBCSfixTopo=T in verification-exp. seaice_obcs.
1302    o pkg/thsice:
1303      - fix bug in thsice_calc_thickn.F (was introduced in version 1.18) in
1304        2nd layer seaice sublimation (unlikely to happen)
1305      - use Interior mask for OBCS in thsice_advection.F (similar to what is
1306        done in gad_advection & seaice_advection).
1307    o adjoint:
1308      bug fix spotted by Gael Forget:
1309      seaice_advection and thsice_advection still had
1310      legacy CPP options to avoid CS corner updates for adjoint
1311    o pkg/seaice:
1312      => Change some of the defaults (2011/05/29):
1313         - change SEAICEuseFluxForm default (from False to True)
1314         - change DIFF1 default (from 0.004 m/s to 0. m/s)
1315         And print warnings if DIFF1 is not set in data.seaice and centered
1316          avection scheme is used without any diffusion.
1317      also:
1318      - fix seaice_diffusion calls in default AdvScheme part of seaice_advdiff.F;
1319      - set SEAICEdiffKh[] default in the same way as SEAICEadvSch[]
1320      - stop if DIFF1<>0 with SEAICEadvScheme <> 2, if DIFF1<>0 with any
1321        other non-zero SEAICEdiffKh[] diffusivity, if SEAICEadvSalt=T with
1322        #undef SEAICE_VARIABLE_SALINITY, if SEAICEadvAge=T with #undef SEAICE_AGE.
1323      update results of test exp.:
1324         lab_sea: output.fd (switch to AdvScheme=33 with diffKh=20)
1325             output.hb87, output_adm.evp (SEAICEuseFluxForm=T and diffKh=200)
1326             output_adm.noseaicedyn (SEAICEuseFluxForm=T)
1327         offline_exf_seaice: output.seaicetd, output_adm (SEAICEuseFluxForm=T)
1328         seaice_obcs: output (SEAICEuseFluxForm=T)
1329      and prescribe old default for SEAICEuseFluxForm (=F) and DIFF1 (=0.004)
1330          for standard fwd & AD lab_sea tests (to keep the same output).
1331    o pkg/seaice/seaice_growth.F:
1332      - use Ian Fenty's capping formulas for actual ice
1333      thickness thoughout EVOLUTION branch.
1334      - put treatment pathological case #2) in CPP brackets
1335      (ALLOW_AVOID_INFINITESIMAL_AREA, undef by default).
1336      - update global_ocean.cs32x15 and 1D_ocean_ice_colum results accordingly.
1337    o pkg/seaice:
1338      - seaice_diffusion.F : remove the min(DX,DY) factor permanently;
1339      pass the Laplacian diffusivity (in m^2/s) diffKh as a parameter;
1340      also pass fac as a param, which can be 1. (to update the tendency
1341      field) or the time step (to update the field itself).
1342      - seaice_advdiff.F: for multidim, call seaice_diffusion with
1343      e.g. SEAICEdiffKhHeff and with fac=1; for single-dim, call
1344      seaice_diffusion with e.g. SEAICEdiffKhHeff and with fac=time step.
1345      - SEAICE_PARAMS.h, seaice_readparms.F, seaice_check.F :
1346      hooks to handle SEAICEdiffKhHeff, SEAICEdiffKhArea, etc.
1347    o pkg/seaice:
1348      diffusion with centered advection scheme (diffus.F & advect.F):
1349      - simplify S/R DIFFUS (put deltaT & DIFF1 factor outside, move EXCH outside)
1350        to just compute the laplacian of input-field.
1351      - unroll k loop (harmonic,biharmonic diff) in advect.F to save 1 exch call.
1352      - fix flux-form version in diffus.F to conserve tracer.
1353      update output of lab_sea.fd & lab_sea.hb87 (1rst set of modif affects
1354       machine truncation) and lab_sea.salt_plume (conservative flux-form modif)
1355    
1356    checkpoint62y (2011/05/26)
1357  o pkg/seaice:  o pkg/seaice:
1358   - seaice_growth.F : in EVOLUTION branch, always include   - seaice_growth.F : in EVOLUTION branch, always include
1359     a_QSWbyATM_cover in qnet (as it should be).     a_QSWbyATM_cover in qnet (as it should be).
1360   - verification/global_ocean.cs32x15 : update results accordingly   - verification/global_ocean.cs32x15 : update results accordingly
1361     (output.seaice.txt output_adm.seaice.txt).     (output.seaice.txt output_adm.seaice.txt).
1362  o pkg/seaice + obcs:  o pkg/seaice + obcs:
1363   - use maskInW & maskInS in multi-dim advection and biharmonic diffusion:   - use maskInW & maskInS in multi-dim advection and biharmonic diffusion:
1364     equivalent of assuming no tracer gradient outside the OB region.     equivalent of assuming no tracer gradient outside the OB region.

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