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revision 1.1295 by jmc, Sat Sep 11 21:39:13 2010 UTC revision 1.1687 by gforget, Wed Jul 11 21:51:27 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/global_ocean.cs32x15/input.seaice :
8     - add SEAICEheatConsFix in data.seaice, ensuring closed ocean+ice heat budget.
9     - add diagnostics (commented out) for budget test using my matlab codes (gcmfaces).
10     - update results (output.seaice.txt) accordingly.
11    o verification/lab_sea/input/data.seaice :
12     - remove SEAICEheatConsFix, which is now be tested
13       in global_ocean.cs32x15. The presently coded fix
14       is only consistent with real fresh water + nlfs.
15     - update results (output.txt) accordingly.
16    o pkg/salt_plume: added diagnotic for salt tendency (oceSPtnd).
17    o AD_CONFIG.h file:
18     - in genmake2: remove "#undef ALLOW_ECCO_OPTIMIZATION" from AD_CONFIG.h;
19     - remove #include "AD_CONFIG.h" from all included OPTIONS files and
20       add it explicitly in each fortran src file where it is needed.
21       motivation: header file AD_CONFIG.h is generated/modified after "make depend"
22       thus introducing potentially wrong dependency; therefore, better to include
23       it only where it's really needed, and after any other included OPTIONS file
24       (less tempting to bring conditional includes according to ALLOW_ADJOINT_RUN
25       or ALLOW_TANGENTLINEAR_RUN).
26    
27    checkpoint63p (2012/07/06)
28    o pkg/autodiff:
29      - rename S/R INI_AUTODIFF to AUTODIFF_INIT_VARIA ;
30      - create new header file "AUTODIFF_PARAMS.h" for pkg/autodiff parameters
31        which are now read from new parameter file "data.autodiff" (inAdExact
32        previously in "data", use{KPP/GMRedi/SEAICE}inAdMode previously in data.pkg)
33      - add file "data.autodiff" in all verification/*/input_ad/ directories.
34      - add run-time parameter to turn On/Off SEAICEuseFREEDRIFT in adjoint/forward
35        mode (used in global_ocean.cs32x15.seaice_dynmix test exp.)
36    o verification/tutorial_tracer_adjsens/
37      - add extra sub-verification which uses "SOM" advection scheme
38        (2nd Order-Moment Advection Scheme, Prather Limiter) with
39          #define GAD_ALLOW_TS_SOM_ADV in GAD_OPTIONS.h
40        and in data:
41          multiDimAdvection=.TRUE.,
42          tempAdvScheme=81,
43          saltAdvScheme=81,
44    o model/src:
45      - introduce ALLOW_BALANCE_RELAX which allow the removal
46       of the global mean of relaxation terms by setting
47       balanceThetaClimRelax and balanceSaltClimRelax
48      - disable balanceEmPmR and balanceQnet in the case when useSeaice.
49       This case is now treated appropriately in seaice_growth.F
50    o pkg/seaice:
51      - do balanceEmPmR and balanceQnet based on the net fluxes
52        (SItflux) that enter the ocean+ice system rather than QNET
53        and EMPMR. Works best in real fresh water.
54      - SIatmFW, SIatmQnet, and SItflux computations had to be moved
55        out of the diagnotics bloc, and stored in global arrays.
56    
57    checkpoint63o (2012/06/29)
58    o vertical mixing schemes:
59      - remove unused S/R CALC_BUOYANCY (left from branch-atmos merging)
60      - replace computation of density (in Function STATE1, opps_calc.F) by a call
61        to S/R FIND_RHO_SCALAR
62      - pass sigmaR to S/R PP81_CALC, MY82_CALC (but not yet used) and to GGL90_CALC
63        and use it for N^2 calculation in ggl90_calc.F (save 2 density computations);
64        affects output (vermix.ggl90) at truncation level.
65    o testreport:
66      - change adjustment of SIZE.h for mpi+mth testing: preserve enough tiles
67        (nSx,nSy) for the number of threads (from eedata.mth)
68    o model/src:
69      - remove 2nd set of calls at the top of initialise_varia.F (Adjoint part)
70        related to Non_Lin Free-Surf or Bottom-Control (but not longer necessary).
71    o verification/tutorial_tracer_adjsens/
72      - compile with ALLOW_CG2D_NSA
73      - run with nonlinFreeSurf=3
74      - update reference output_adm.txt
75    o tools/genmake2:
76      - add "-DHAVE_NETCDF" to the DEFINES list when NetCDF is available ;
77        refine usePROFILES switching off (only when NetCDF is not available).
78    o verification (atmospheric set-up):
79      - change eosType='IDEALGAS' to eosType='IDEALG' to match variable declaration
80    o pkg/profiles : refine profiles and files handling.
81    o model/src and pkg/ecco : introduce run-time switch usePROFILES.
82    o model/src/the_main_loop.F, forward_step.F and pkg/exf/EXF_OPTIONS.h :
83      - changes to use model/src/the_main_loop.F rather than the ecco version
84        in ecco type adjoint runs.
85    o model/src:
86      - move computation of recip of grid distance & area from INI_MASKS_ETC to INI_GRID
87      - move setting of h0Fac[C,W,S] from INI_LINEAR_PHISURF to INI_MASKS_ETC
88      - update_masks_etc.F: rename SMOOTH*_R4,R8 function to the corresponding type (RS,RL)
89    o model/src:
90      - fix S/R UPDATE_CG2D for ALLOW_DEPTH_CONTROL case (was empty before);
91        update output of test experiment bottom_ctrl_5x5.
92    o pkg/generic_advdiff:
93      - implement vertical bi-harmonic diffusion (for now, only for T & S and
94        only explicitly).
95    o verification/bottom_ctrl_5x5/
96      update reference output (results changed quite some time ago,
97      not sure when; but new reference results look ok in terms of grdchk)
98    o verification/1D_ocean_ice_column/
99      For verification purposes, the exact adjoint rather than an approx.
100      should be used (e.g., to comare against F.D. or TLM).
101      removed autodiff_inadmode*_ad.F routines in code_ad/
102      Update results/ accordingly.
103    o pkg/cal:
104      - change cal_getdate.F so that output date is function of input time only
105        (less ambiguous, not mixed up with input iteration number).
106      - fix calendarDumps for non-zero phase-lag (S/R CAL_TIME2DUMP).
107    o pkg/diagnostics:
108      - implement calendarDumps also for stats-diags
109      - implement calendarDumps also for snap-shot output (negative freq)
110      - for now, ignores calendarDumps if non-zero phase-lag.
111    
112    checkpoint63n (2012/06/04)
113    o model/src:
114      - recompute rSurfW & S to ensure consistent column thickness (needed for rStar)
115        between Sum_k(hFac*drF) and rSurf-rLow, for now only when using pkg/shelfice;
116      - use h0FacC, W & S to compute hFac_surfC, W & S in calc_surf_dr.F (more
117        similar to calc_r_star.F); update results of experiment internal_wave and
118        tutorial_global_oce_in_p (affected @ truncation level).
119    o pkg/shelfice:
120      - add parameterisation of advective-diffusive flux into the ice shelf
121        according to Holland and Jenkins (1999), eq.22-33, as suggested by Jan De Ryd
122      - simply eps3/3a computation
123    o eesupp:
124     - add new CPP option (DISCONNECTED_TILES) to disconnect tiles (no exchange
125       between tiles, just fill-in edges assuming locally periodic subdomain) and
126       add corresponding exchange subroutines (EXCH0);
127     - new CG-solver version (_EX0) for disconnected-tiles special case.
128    o model/src (CG-solvers):
129     - modify Single-Reduction version (CG2D_SR) in case cg2dMaxIters is reached
130       (similar final residual output and max-Iter number as with standard version);
131     - allows to store and use lowest-residual solution (standard & _SR versions);
132     - cleaning up (remove old, commented out code, LETS_MAKE_JAM ...).
133     - by default, also compile CG2D_SR version (define ALLOW_SRCG in CPP_OPTIONS.h)
134    o eesup/src:
135     - global_vec_sum.F cleaning: add a BARRIER ; update comments ; remove ndef
136       ALWAYS_USE_MPI (no longer needed after fixing usingMPI settings - March 2012)
137    o pkg/salt_plume added to lab_sea/input_ad.noseaicedyn
138    
139    checkpoint63m (2012/04/27)
140    o pkg/shelfice:
141     - account for partical cells in surface level below ice-shelf for hydrostatic
142       pressure calculion (set uniformFreeSurfLev to F); update isomip experiments.
143    o ad test experiments:
144     - update and rename to "ad_optfile.local" local AD-optfile specific to a
145       particular adjoint verification experiment (in verification/*/code_ad/)
146    o pkg/seaice & pkg/exf:
147     - Part two of ECCO-CLIVAR code merges.
148       Completes merge of seaice area relax. code.
149       Requires unified CPP option EXF_ALLOW_SEAICE_RELAX
150       to be set in EXF_OPTIONS.h since this pkg controls its I/O
151       (and avoids second CPP option in SEAICE_OPTIONS.h)
152     - change default value of costIceStart & costIceEnd to a valid date.
153     - add snowPrecip to HSNOW in seaice_growth
154    o pkg/ptracers:
155     - move ptracers summary and setup check into separated S/R ; add a check for
156       valid PTRACERS_Iter0 value (error+stop or just warning).
157    o pkg/cal (+ pkg/ecco):
158     - avoid calling a S/R with 2 times the same arg (FWD: unless both are only used
159       as input; and for AD, unless both are not differentiable (e.g., k index)).
160    o model/src:
161     - define internal flag "uniformFreeSurfLev" (=T when free-surface level-index
162       is everywhere k=1) to speed-up some calculations (by pass kSurf reference);
163       temporary set to usingZCoords value (to be changed to F when using shelfice).
164     - hydrostatic pressure: implement partial cell near the surface also for
165       Z-coordinates (for the case where uniformFreeSurfLev=F); replace test on
166       usingZCoords with test on uniformFreeSurfLev where needed (in NonHyd code).
167    o pkg/ctrl/ctrl_init.F:
168     - add a formal parameter to s/r ctrl_init_rec to print
169       xx_$(ctrl_valiable)_file for easier debugging
170     - move call of cal_* routines into the if-block where they are really
171       needed so that xx_$(ctrl_variable)_period can be 0 or -12 without having
172       to specify a startdate
173    o pkg/seaice:
174     - update comments in SEAICE_OPTIONS.h (+ similar update of lab_sea/code and
175       global_ocean.cs32x15/code versions).
176     - turn on seaice Multi-category (in data.seaice, SEAICE_multDim=7) for
177       verification experiment global_ocean.cs32x15.seaice and update results.
178    o pkg/exf:
179     - new S/R EXF_GETFIELD_START to return starting-time of a forcing field
180       (according to useExfYearlyFields).
181    o pkg/cal:
182     - move calendar setting & summary (previously in cal_readparams.F) into new
183       S/R CAL_INIT_FIXED to be called later in the initialisation process, once
184       length of the simulation is set (after SET_PARMS call); This is an attempt
185       to fix Pb when, e.g.: pkg/longstep, modifies the length of the run.
186     - For safety: keep a record of pkg/cal parameter settings status
187               to allow to STOP if one pkg/cal S/R is called too early.
188     - add a stop in all basic pkg/cal subroutines if called before setting is done.
189     - modify cal_getdate.F: stop when nothing was returned;
190       if called with myIter=-1, simply retrun modelBaseDate (1,2 = startDate_1,_2);
191       this allows to remove "cal.h" from seaice_read_parms.F & init_mnc_vars.F.
192    
193    checkpoint63l (2012/04/04)
194    o pkg/bbl:
195      - fix call to FIND_RHO_2D in bbl_calc_rho.F (case multi-tiles per proc);
196        update global_with_exf output.yearly.txt file.
197    o pkg/cal:
198      - start to clean-up cal_set.F ; fix for the case where baseTime is non-zero.
199      - remove 2 unsused and very short (1 line only) functions ;
200      - remove unsused subroutines from AD-Diff list.
201    o model/src:
202      - start to implement clean wait to stop in initialization S/R (config_check.F,
203         packages_check.F, ini_parms.F and pkg/obcs/obcs_check.F + pkg/mypackage)
204    o folowing PRINT_MESSAGE changes:
205      - remove reminder multiple print to the same file (STDOUT) when multi-threads.
206    o pkg/bbl:
207      - modification so it can work with z*
208      - replace deltaT with dTtracerLev(k) for asynchronous time stepping
209      - global_with_exf/input.yearly verification; changes output.yearly.txt
210    o eesupp/src:
211      - PRINT_MESSAGE: use OpenMP critical instruction (similar to PRINT_ERROR);
212        writing to unit 0 (if unit=errorMessageUnit) extended to the case myThid=1
213      - CHECK_THREADS: specific code if using OpenMP threading: improve checking of
214        # of threads across processors (e.g., different env OMP_NUM_THREADS setting)
215      - improve special preliminary call to EESET_PARMS (if eedata is read 2 times).
216      - when using MPI, always set usingMPI=T ; set default accordingly and stop
217        if not consistent.
218      - ALL_PROC_DIE: add a BARRIER after MPI_FINALIZE call ; skip this when thread
219        argument is zero (in case called within single-thread section).
220    o pkg/fizhi:
221        clean-up turbulence cold-start switch: decided in fizhi_init_vars.F, stored
222        in common bloc (fizhi_coms.h) and then passed as argument up to S/R TURBIO.
223    o pkg/exch2:
224      - add argument "updateCorners" to S/R exch2_get_uv_bounds (enable to
225        activate EXCH_IGNORE_CORNERS in vector EXCH S/R).
226      - switch 1rst EXCH call to IGNORE_CORNERS (instead of UPDATE_CORNERS)
227        but keep the 2nd with UPDATE_CORNERS: this prevents overwriting good data
228        with bad ones coming from a not-yet-updated halo.
229        This should fix the problem when sNx <> sNy and GCD(sNx,sNy) < 2*Olx.
230    o pkg/frazil:
231        move FrzForcT diag from frazil_diagnostics_state.F to frazil_calc_rhs.F
232        http://mitgcm.org/pipermail/mitgcm-devel/2012-March/005384.html
233    o model/src/config_check.F: add a check for OLx>sNx/OLy>sNy
234    o verification/lab_sea
235      * #undef SEAICE_EXCLUDE_FOR_EXACT_AD_TESTING
236      * #define ALLOW_SST_CONTROL & ALLOW_SST_CONTROL
237      * nTimeSteps 3 -> 4
238      * changed reference output accordingly
239    o pkg/ctrl:
240      * fix ctrl_get_gen for xx_sst, xx_sss
241    o pkg/fizhi:
242      - fix 2 calls to S/R GRD2MSC (argument igrd) in update_earth_exports.F
243        update results of exp. fizhi-cs-32x32x40 (fail with only 6 digits for cg2d)
244      - by default, use new version of S/R GETPWHERE (#define TRY_NEW_GETPWHERE);
245        fix few out-of-bounds indices in referencing vars (initialise igrd to 1);
246        clean-up fizhi_turb.F (remove unused & uninitialised qdiaglsm array).
247    o pkg/gmredi:
248      - add diagnostic of Redi (main diagnonal) vertical diffusive flux of Temp
249    o pkg/fizhi:
250      - fix few initialisation and multi-tile Pb: aqualev & gridalt now pass the
251        (old)aces open64 tuv test.
252    o pkg/icefront: fix bug and reorder loop in icefront_init_varia.F
253    o pkg/mom_vecinv:
254      - fix 1 loop range in mom_vecinv.F to be like all the other loops which
255        set/update gu,gv/Diss (fix Pb of uninitialised fVerUkp in admom_vecinv
256        with non-lin free-surf).
257    o model/src: move k-loop outside of i/j-loops when (re-)computing R_low
258      in ini/update_masks_etc.F in order to avoid -O3 optimization problems with
259      some compilers (gfortran 4.6.0 on MacOS)
260    o momentum:
261      - separate fVer?(:,:,kUp) & fVer?(:,:,kDown) in argument list of MOM_FLUXFORM
262        & MOM_VECINV subroutines (to help TAF). This fixes Pb of uninitialised
263        fVer?(kUp) in admom_fluxform with non-lin free-surf or bottom control.
264    
265    checkpoint63k (2012/03/17)
266    o model/src:
267       - selectAddFluid (ALLOW_ADDFLUID): add missing term in horizontal momentum
268         flux-form (mom_fluxform.F) and vertical momentum (calc_gw.F) equations.
269       - SOLVE_DIAGONAL: switch default to use adjoinable & vectorized version
270         (#undef SOLVE_DIAGONAL_LOWMEMORY); update output of exp. front_relax.bvp.
271    o model/src: solve_*diagonal.F
272       - replace division with multiplication by inverse (similar to original version)
273         update output of AD exp. global_ocean.90x40x15.
274       - fix pkg/gmredi/gmredi_calc_psi_bvp.F & pkg/ggl90/ggl90_calc.F
275         to enable the use of the vectorized & differentiable solve_tridiagonal.F
276       - test exp. global_ocean.90x40x15/input_ad: switch to advection scheme 20 for
277         vertical advection (to get solve_tridiagonal tested in AD mode).
278    o pkg/seaice: ECCO-CLIVAR merge:
279      1. seaice AREA relaxation
280         * CPP option: SEAICE_ALLOW_AREA_RELAXATION
281         * runtime flag: SEAICE_tauAreaObsRelax
282      2. modified global mean cost imbalance code: CPP option
283          ALLOW_SSH_GLOBMEAN_COST_CONTRIBUTION
284    o another iteration on solve_*diagonal.F
285       Make choices independent of AUTODIFF
286       Default will be the adjoinable vectorized version.
287       Alternative choices are:
288       * non-adjoinable original version with low memory footprint:
289         #define SOLVE_DIAGONAL_LOWMEMORY
290       * still adjoinable but does not vectorize (k as inner-most loop):
291         #define SOLVE_DIAGONAL_KINNER (keeping SOLVE_DIAGONAL_LOWMEMORY undef)
292    o testreport
293     - add option to use a home made wrapper around "make"
294     - remove MITGCM_IEEE env. variable (no longer active)
295    o pkg/shelfice
296     - improve computation of friction velocity for velocity dependent
297       exchange coefficients: include velocities into SHELFICEBoundaryLayer
298       block to average velocities vertically
299     - add TAF store directives for SHI_ALLOW_GAMMAFRICT
300    o Modify diagonal solvers, now three versions (upon request):
301      #ifndef SOLVE_DIAGONAL_AUTODIFF
302        1. default version (dating back a while ago)
303      #else /* def SOLVE_DIAGONAL_AUTODIFF */
304      # ifdef SOLVE_DIAGONAL_KINNER
305        2. adjoinable version with k-innermost loop (G. Forget)
306      # else
307        3. adjoinable vectorized version of 2.
308      # endif
309      #endif /* SOLVE_DIAGONAL_AUTODIFF */
310      All flags are currently set within routines, but could/should be moved to CPP-options.
311      Array bounds for 1. are as before, for 2.,3. cover the entire domain
312      (could be changed for 1. too).
313    o verification/lab_sea (fwd):
314      - update the 4 fwd lab_sea test experiment: no longer SEAICE_GROWTH_LEGACY,
315        use 7 categories (except hb87), new solve4temp params (except salt_plume),
316        constant salinity (=4) or variable salinity (salt_plume) done through
317        SItracer.
318    o pkg/seaice:
319      - rename parameters: SIsalFrac to SEAICE_saltFrac & SIsal0 to SEAICE_salt0;
320      - remove old parameters ( SEAICE_freeze, SEAICEturbFluxFormula, SEAICE_gamma_t,
321         SEAICE_gamma_t_frz, SEAICE_availHeatTaper & SEAICE_availHeatFracFrz)
322        from SEAICE_PARMS.h ; still need to fix seaice_cost_sst.F (broken when
323        SEAICE_freeze got retired) but already better than previously with
324        SEAICE_freeze=123456.7 deg.C;
325      - move setting of facOpenGrow/Melt from SEAICE_INIT_FIXED to SEAICE_READPARMS
326        (safer multi-threaded setting); always set SEAICEuseEVP;
327      - setting of ocean-ice turb. flux coeff: moved from SEAICE_CHECK to
328        SEAICE_READPARMS & SEAICE_INIT_FIXED (this fixes wrong summary report);
329        stop if multiple specifications for the same coeff; make sure default
330        SEAICE_mcPheePiston is compatible with drF(1) & deltaT.
331    o pkg/obcs:
332      - allow to switch to upwind 1rst order advection scheme for the advective
333        flux computation at the open-boundary; disabled for adjoint built.
334    o pkg/ptracers:
335      - rename PTRACERS_RESTART.h -> PTRACERS_START.h
336      - rename ptracers_fields_blocking_exchanges.F -> ptracers_fields_blocking_exch.F
337      - add parameter to decide when to start a tracer; use internal flag to
338        know which tracer to step-forward; switch this internal flag at the top
339        of forward_step.F (new S/R PTRACERS_SWITCH_ONOFF); for now, not enabled
340        for adjoint built.
341    o pkg/seaice:
342      - add SEAICE_SIZE.h anywhere in the code where SEAICE.h is included ;
343      - move MULTDIM declaration and setting from SEAICE.h to SEAICE_SIZE.h ;
344      - keep experiment offline_exf_seaice truly single category (set MULTDIM=1).
345    o pkg/ecco:
346      - fix writing of output file DiagnosCost_ClimSalt/Theta
347        and DiagnosCost_DriftSalt/Theta (if multi-tiles per proc).
348    o pkg/seaice:
349      - add missing initialisation of COR_ICE array in dynsolver.F
350      - merging SEAICE_MULTICATEGORY define and undef cases. Now the same code is
351        compiled either way, and is tested in all exps (multidim was only tested
352        in lab_sea ad before).
353      - cosmetic change to prepare for future addition of ITD. no change to results.
354        no defaults change.
355      - added run time param SEAICE_multDim (7 for SEAICE_MULTICATEGORY, 1 otherwise).
356      - by lack of adequate verification experiments, I further used custom versions
357        of global_ocean.cs32x15 to test multicat or not, with pickup or not. All
358        should be correct.
359      - avoid recomputations in ad.
360    o array initialisation in adjoint mode:
361      1) pkg/mom_common/mom_calc_ke.F:
362        add full array initialisation of KE inside mom_calc_ke.F (ALLOW_AUTODIFF_TAMC):
363        The S/R which calls MOM_CALC_KE initialises KE but in some recomputation
364        part this initialisation is gone, resulting in Floating Point Exception
365        (caught by open64 compiler with debug option).
366      2) model/src/convective_weights.F
367        set output convectCount over the full array range (instead of doing
368        an update): this fix a similar issue when called within recomputation (adjoint)
369        which could by-pass the initialisation (normally done in the caller S/R).
370    o pkg/seaice:
371      - final version of turbulent flux params, as agreed at MIT ice meet:
372           SEAICE_mcPheePiston (default is ~ 0.000875)
373           SEAICE_mcPheeTaper (default is 0.)
374           SEAICE_frazilFrac (defualt is 1.)
375           SEAICE_mcPheeStepFunc (default is false)
376      - changes results at trunction error level
377      - ifdef SEAICE_EXTERNAL_FLUXES, disallow SEAICE_waterAlbedo
378    o added pkg/frazil:
379      - see frazil_description.tex for details
380      - verification experiment is global_with_exf/input.yearly; changes output.yearly.txt
381    o pkg/shelfice/shelfice_thermodynamics.F
382      - fix exponents for velocity dependent exchange coefficients: change
383        from 2/3(=0) to 0.66666666666666667
384      - move computation of velocity dependent exchange coefficients into
385        separate loop, so that it applies to both thermodynamics
386      - move some divisions by constants out of loops
387    
388    checkpoint63j (2012/02/16)
389    o pkg/seaice:
390      - overhaul of seaice_summary.F after feb 2012 clean-up of seaice_growth.F etc.
391      - SItracer:  added run time params, and allow coupling to ocn salinity.
392    o pkg/seaice: remove (almost) all divisions by constants within loops
393      in seaice_growth.F and seaice_solve4temp.F, this changes (only) the cg2d
394      results of global_ocean.cs32x15.seaice from 16 to 11 digits (but only
395      those, caused by 1/QI -> recip_QI) -> update output.seaice.txt,
396      output_adm.seaice_dynmix.txt and also lab_sea: output_adm.evp.txt
397    o pkg/seaice :
398      - simplify McPhee tapering, and allow to use it with SEAICEturbFluxFormula
399        = 1 or 2, using newly added run time parameter SEAICE_availHeatTaper.
400      - fix d_AREAbyATM, d_AREAbyOCN, d_AREAbyICE diags I broke in r1.148.
401      - add permanent SItflux diag that corresponds to TFLUX but includes
402        ice+snow. Hence SItflux-TFLUX should match the ice+snow heat budget.
403      - allow activation/testing of a fix for suspected missing term in
404        ocn-ice heat budget (to be confirmed). To test this, you want to
405        undef SEAICE_DISABLE_HEATCONSFIX, and then set the run time param
406        SEAICEheatConsFix to .TRUE. that also allows the 'SIaaflux' diagnostic.
407      - no change in results, fwd or ad.
408    o global_ocean.cs32x15/results: 3 changes following from the pkg/seaice commit below:
409      - switch to variable freezing point.
410           Results change : cg2d -> 1 digits; ad -> 3-6-6 digits.
411      - bug fix : the sublimation term that was missing is now activated.
412           Results change : cg2d -> 2 digits; ad -> 8-6-6 digits.
413      - bug fix : flooding sign term for SIsal0.NE.0.
414           Result change : cg2d -> 8 digits; ad -> 11-12-9 digits.
415    o pkg/seaice:
416      - unified freezing point treatment : the old SEAICE_VARIABLE_FREEZING_POINT
417        is now the default, and the old default constant freezing point is recovered
418        with SEAICE_tempFrz0    = -1.96,
419             SEAICE_dTempFrz_dS = 0.,
420      - retire SEAICE_freeze (= the old way of specifycing the constant freezing point)
421      - remove ALLOW_SEAICE_FLOODING brackets; run time switch is already there.
422      - bug fix (thanks to M. Losch) : the sublimation term that was missing is now
423        activated. To reproduce old results with this bug define SEAICE_DISABLE_SUBLIM.
424      - bug fix (silly me) : flooding sign term (seaice_growth.F r 1.149line 1211)
425        was wrong for SIsal0.NE.0. Changes cs32x15 results (see above item for detail).
426      - bug fix (thanks to O. Jahn) : area loss for melting  got messed up in
427        seaice_growth r149 for legacy branch (no results change).
428      - introduce SEAICE_CAP_SUBLIM : caps sublimation heat flux in solve4temp (code
429        from I. Fenty).
430      - results did not change except for global_ocean.cs32x15, mostly due to the
431        switch to variable freezing point (see above item for detail).
432    o pkg/thsice:
433      - fix and simplify interface to salt_plume pkg ; diagnose directly amount of
434        seawater freezing in thsice_calc_thickn (not used).
435    o pkg/seaice: turbulent flux term specification via run time params.
436      - replace CPP switches with run time switches to facilitate testing
437      - retired CPPs : MCPHEE_OCEAN_ICE_HEAT_FLUX,
438                       GRADIENT_MIXED_LAYER_TURBULENCE_FACTOR
439      - added runtime parameter : SEAICEturbFluxFormula
440      - move Mcphee constants to SEAICE_PARAMS.h
441      - seaice_readparms.F : read turbulent flux term params (SEAICEturbFluxFormula;
442                 SEAICE_availHeatFrac/Frz, or SEAICE_gamma_t/_frz if apply);
443                 remove seaice_summary call (moved to seaice_init_fixed)
444      - seaice_init_fixed.F : set SEAICE_availHeatFrac/Frz depending on
445        SEAICEturbFluxFormula, and seaice_summary call (moved from seaice_readparms)
446      - seaice_summary.F : add missing report of read turbulent flux term set up
447                           and SITRACER.
448      - seaice_check.F : check range; inform and stop if retired CPPs are used
449                         (incl. SEAICE_AGE).
450      - seaice_growth.F : unified use of SEAICE_availHeatFrac/Frz, without
451             CPP switch, same computation as before for the different options.
452      - change results at the truncation level.
453    o pkg/seaice:
454      - remove un-used parameters LAD & MAX_TICE ; add new run-time parameters:
455        useMaykutSatVapPoly (default=F), postSolvTempIter (default=2) and
456        SEAICE_wetAlbTemp (default=-1e-3). Remove option SEAICE_SOLVE4TEMP_LEGACY.
457      - update verification/*/input*/data.seaice:
458        to reproduce previous results with former #defined SEAICE_SOLVE4TEMP_LEGACY
459        code, set useMaykutSatVapPoly=T & postSolvTempIter=0 ;
460        and to reproduce previous results with former non-SOLVE4TEMP_LEGACY code,
461        set SEAICE_wetAlbTemp=0 & SEAICE_snowThick=0.
462    o pkg/seaice/seaice_solve4temp.F (SOLVE4TEMP_LEGACY):
463      - remove LEGACY code for solving for tsurf (A1,A2,A3) but maintain the same
464        algorithm (same choice: useMaykutPolySatVap=T, postSolvTempIter=0);
465        difference in results only due to machine truncation.
466      - remove MAX_TICE (tsurf is always =< TMELT anyway); keep MIN_TICE if using
467        MaykutPolySatVap; keep MIN_LWDOWN.
468      - adapt SEAICE_MODIFY_GROWTH_ADJ code (untested) to non-legacy formulation.
469      - update output of verification exp. lab_sea (4 fwd: 11 cg2d digits except hb87,
470        + 3 AD: 6 digits except evp) and offline_exf_seaice.seaice (12 digits).
471    o pkg/salt_plume:
472      - isolate saltPlumeFlux array exch into a specific S/R called from
473        do_oceanic_phys.F
474      - add interface to pkg/salt_plume (filling of saltPlumeFlux) in pkg/thsice.
475    o verification:
476      - move untested set-up to MITgcm_contrib/verification_other.
477    o pkg/seaice:
478      - retire old way of SEAICE_AGE. Now replaced with ALLOW_SITRACER.
479    o pkg/seaice:
480      - seaice_solve4temp.F (keeping results unchanged):
481        * add 2 future run-time params to select which saturation vapor pressure
482          formula is used and how post-iteration fluxes are set.
483          Temporary set these 2 params according to option SOLVE4TEMP_LEGACY;
484        * New piece of code (not used) to update surf. atmos. heat flux F_ia using
485          the linearized expression to stay consistent with tsurf finding.
486      - seaice_freedrift.F avoid floating exception in sqrt(y) since y=sqrt(x*x)-x
487        can be < 0.
488    o pkg/seaice/seaice_solve4temp.F (SOLVE4TEMP_LEGACY undef):
489      - remove from F_ia (and from it's derivative dFiDTs1) the contribution of
490        conductive heat flux F_c , and add it explicitly when updating tsurf as
491        solution of: Fc = Fia + d/dT(Fia - Fc) *delta.tsurf
492        so that now F_ia has a consistent meaning through the entire routine.
493        This causes differences at truncation level: update output of fwd exp.
494        global_ocean.cs32x15.seaice.
495    o pkg/seaice:
496      - lots of editing/cleaning in seaice_solve4temp.F + better documentation
497        of arrays, sign/direction of fluxes; no effect on results.
498      - replace hard coded 273.16 (=previous value of celsius2K) by celsius2K
499        in seaice_budget_ocean.F & seaice_solve4temp.F (SOLVE4TEMP_LEGACY part);
500        note: this should have been done before changing celsius2K default.
501      - to keep results unchanged, add back old value of celsius2K in verification
502        exp. input*/data : lab_sea (AD), offline_exf_seaice (fwd+AD) & seaice_obcs
503      - replace hard coded seawater freezing temp in seaice_solve4temp.F (part
504        SOLVE4TEMP_LEGACY) of 271.20 (=previous value of celsius2K + default
505        value of SEAICE_freeze) by celsius2K+SEAICE_freeze so that seawater
506        freezing temp is consistent with value in seaice_growth.F ; this causes
507        differences at machine truncation level: update lab_sea AD output (3/4).
508    o pkg/seaice:
509      - mask (in exf_init_fixed.F) atemp,aqh,evap,precip,runoff,lwflx,areamask
510        and climsst/sss even when using seaice (to prevent calculation that might
511        use SST on land); does not affect any verification exp.
512      - apply mask to taux,tauy (in seaice_get_dynforcing.F); update output
513        of lab_sea.fd & lab_sea.hb87 and global_ocean.cs32x15.seaice_dynmix.
514    o pkg/seaice/seaice_growth.F: add mask to avoid non-zero ice thickness
515      over land (non-legacy code)
516    o vectorize salt_plume package:
517      - add extra code to salt_plume_frac and salt_plume_tendency_apply_s
518      - this code computes plumebk everywhere (also over land), thus requires
519        code to avoid divisions by zero and catch the case of kLev=Nr.
520      - efficiency of salt_plume_frac is still sub-optimal
521    o tools (genmake2):
522      - fix makefile NAME specification (option: -makefile NAME) by adding
523        "-f $MAKEFILE" in few places where it was missing including makedepend
524        command (contribution from Paul).
525    
526    checkpoint63i (2012/01/24)
527    o model/src:
528      - add factorized versions of some EOS code to find_rho.F,
529        define USE_FACTORIZED_EOS to turn it on (default for TARGET_NEC_SX)
530    o model/src:
531      - add celsius2K to namelist PARM01; remove unused recip_rhoNil from PARAMS.h;
532      - change default celsius2K from 273.16 to 273.15
533      - to keep results unchanged, add back old value of celsius2K in verification
534        exp. input*/data : aim.5l_cs, 1D_ocean_ice_column, lab_sea (fwd),
535         global_ocean.cs32x15(seaice) & cpl_aim+ocn(input_atm).
536    o model/src: add a little initialisation trick to find_rho.F and find_alpha.F
537      to make TAF generate vectorizable code
538    o pkg/seaice/seaice_evp.F: add code (copied from CICE) that avoids underflows.
539       Turn on by defining SEAICE_EVP_ELIMINATE_UNDERFLOWS. Most compilers
540       have flags that do this more efficiently.
541    o pkg/diagnostics/diagstats_calc.F
542      - for TARGET_NEC_SX fix the treatment of the scaling factor tmpFac=scaleFact
543    o pkg/obcs (with exch2):
544      - derive OB indices in overlap region from OB-InsideMask (in obcs_init_fixed.F)
545        and remove code (in obcs_readparms.F) which was based on EXCH of indices
546        (through buffer) and did not account for exch2 (e.g., CS-grid) topology.
547    o pkg/exf and seaice exp:
548      - change offline_exf_seaice.seaicetd test exp. to use default DIFF1 value (=0)
549        so that switching off area & heff advection flags does not affect results.
550      - change default EXF_LWDOWN_WITH_EMISSIVITY to #define in EXF_OPTIONS.h
551      - keep exp. seaice_obcs & 1D_ocean_ice_column(ad) unchanged (using #undef
552        EXF_LWDOWN_WITH_EMISSIVITY) and, using pkg/exf default emissivities, update
553        results of verification experiments: 1D_ocean_ice_column(fwd),
554        global_ocean.cs32x15.seaice(fwd+ad) & seaice_dynmix(ad), lab_sea (all 8)
555        and offline_exf_seaice (all 4).
556    o pkg/seaice:
557      - remove array YNEG, RIVER, TMIX (replaced by local var) from common block;
558        remove also areaNm1 & hEffNm1 when SEAICE_GROWTH_LEGACY is undef.
559      - fix bug: areaNm1 & hEffNm1 are needed in seaice_growth (SEAICE_GROWTH_LEGACY)
560        but were not filled when resp. SEAICEadvArea=F & SEAICEadvHeff=F and
561        not multi-dim advection;
562      - fix seaice_growth.F to compile with both SEAICE_GROWTH_LEGACY and
563        SHORTWAVE_HEATING #undef.
564    o optim: make Makefile more robust (?)
565    o pkg/obcs:
566      * fix treatment of obcs_read_pickup for TAF
567    o pkg/shelfice:
568      * add missing initialisation of num_shifwflx
569      * new adjoint verification exp. for isomip
570      * change Prandtl and Schmidt numbers from generic formulations
571        (in terms of model diffus. and visc.) to separate runtime
572        parameters, with Holland and Jenkins (1999) default values.
573    o pkg/exf (interpolation):
574      - extended input field (2 rows) near the N & S poles:
575        * fill in with the symetric value (when even Nb of data in longitude)
576        * add average value at the poles only for scalar quantities ; for vector
577          component interpolation, skip the averaging and keep duplicated values,
578          unless the 2 components have same location (uvInterp=T) in which case
579          interpolate the 2 components together using S/R EXF_INTERP_UV.
580      - new S/R EXF_INTERP_UV to interpolate the 2 components of a vector field
581        together: this allows to account properly for local orientation when
582        averaging at N & S pole.
583      - add CPP option EXF_USE_OLD_INTERP_POLE to recover old results regarding
584        exf-interpolation near N & S poles. Undef by default.
585      - add debug check/print on 1rst iter if debugLevel >=2.
586    o pkg/exf:
587      - change masking flags definition (no longer "parameter"), put them in
588        common block and set them in S/R EXF_INIT_FIXED.
589      - change recognized masking flag from s,u,v to c,w,s since the mask
590        to use (maskC,W,S) depends on position on model grid and has little to
591        do with scalar/vector difference; fix masking if using P-coordinates.
592      - fix masking of wind-stress (was wrong if interpolated or read on A-grid)
593        and update results of exp. global_with_exf (x2).
594      - fix setting of zenith-angle table when SHORTWAVE_HEATING is undef.
595    o pkg/obcs
596      - S/R obcs_calc_stevens: fix a small bug (gammat -> gammas where appropriate)
597    o pkg/exf (interpolation):
598      - assume periodicity in X only if input field cover full longitude range.
599      - improve search for lat. index (supposed to be faster, in ~log2(ny) steps,
600        and should vectorise).
601      - fix input lat of the 2 added row (in case we provide N.pole data).
602    
603    checkpoint63h (2011/12/30)
604    o pkg/seaice:
605      - change declaration of UVM from _RL to _RS in order to get B-grid
606        uIce,vIce monitor when _RS = real*4
607    o pkg/offline:
608      - new S/R OFFLINE_RESET_PARMS for resetting main-model params (switch off flags);
609      - compute vertical velocity if not read from file (switch on exactConserv
610        & staggerTimeStep);
611      - fix output of ptracer monitor iter & time for default PTRACERS_monitorFreq.
612    o verification:
613      - update grid-files (in tutorial_held_suarez_cs/input and fizhi-cs-32x32x40/input)
614        with grid-angle generated using "utils/matlab/cs_grid/cubeCalcAngle.m":
615        fix Pb in yG definition @ 2 missing corners (previously yG was averaged);
616      - update output of exp. global_ocean.cs32x15.viscA4 after changing
617        grid-file angles (used here for coriolis-3d);
618      - remove (or gzip) few files not needed to run fizhi-cs experiments.
619    o pkg/exf (vector interpolation):
620      - rotate vector component toward local grid-axis orientation using grid-angles
621        (stored in GRID.h) instead of locally computed rotation angle; keep old code
622        available with exf option EXF_USE_OLD_VEC_ROTATION (undef by default).
623    o pkg/seaice:
624      - allow to compile with exf options ALLOW_ATM_TEMP or ALLOW_DOWNWARD_RADIATION
625        undefined. Fix and remove the stop when ALLOW_RUNOFF is undefined.
626    o pkg/PKG_OPTIONS.h files:
627      - move #include "CPP_OPTIONS.h" just after #include "PACKAGES_CONFIG.h",
628        outside of the #ifdef ALLOW_THISPKG / #endif block.
629      - update verification/*/code/PKG_OPTIONS.h files.
630    o add a verification experiment (offline_exf_seaice/input.seaice) that test
631      the B-grid LSOR solver
632    o pkg/seaice: sort out emissivity and long wave radiation step 2:
633      - add emissivity for snow and ice as new run-time parameters
634        (unfortunately) that default to the corresponding exf values; this
635        changes results in most verification experiments so that for backward
636        compatibility these parameter have to be set explicitly to inconsistent
637        values (ugly);
638      - the exf-flag EXF_LWDOWN_WITH_EMISSIVITY then gets rid off the hard-wired
639        emissivities of 0.97 associated with lwdownloc in S/R seaice_solve4temp
640        until we agree how to handle this bug properly
641    o pkg/exf (interpolation):
642      - add a set of run-time param ({inputfield}_interpMethod), one for
643        each interpolated input field, to select the interpolation method
644        with a value of zero switching off the interpolation;
645      - print interpolation parameters to standard output;
646      - refine exf_check.F accordingly ; stop if USE_NO_INTERP_RUNOFF is defined
647        (to use instead runoff_interpMethod=0 in data.exf).
648      - simplify default setting of interpolation parameters (for all fields,
649        set position to match model grid cell-center position, leading to trivial
650        interpolation in case of regular Lat-Lon grid) and fix for the case of
651        non-uniform delY.
652    o pkg/exf/exf_radiation.F: add the factor ocean_emissivity to lwdown, for
653       within #ifdef EXF_LWDOWN_WITH_EMISSIVITY/#endif. Unless ocean_emissivity=1.
654       this factor is absolutely required, because the lw exitance (= out-going
655       long wave radiation) is emissivity*stefanBoltzmann*T^4 + rho*lwdown,
656       where the reflectivity rho = 1-emissivity for conservation reasons. Once
657       this is established, we can remove the CPP-Flag (if we want to).
658    o pkg/seaice:
659      - qualify a stop statement in S/R seaice_check: EXF_READ_EVAP and
660        ALLOW_BULKFORMULAE are only required if SEAICE_EXTERNAL_FLUXES is defined
661      - sort out emissivity and long wave radiation, step 1: make SEAICE_emissivity
662        what the name implies (and not emissivity*BoltzmannConstant), this means
663        the old default value of 5.5e-8 now means
664        5.5e-8/5.670e-8 = 0.97001763668430343479 as ocean_emissivity in
665        S/R exf_readparms
666      - FV-discretization of the B-grid LSOR solver, turn on with
667        SEAICE_LSRBNEW. This new solver also involves a slight re-organization
668        of the calling routine dynsolver, so that B and C-grid code look a
669        little more alike.
670      - fix index bugs in ostres.F (B-grid code)
671    o pkg/seaice/seaice_ocean_budget.F: change (unused) code to make it look better
672    o pkg/seaice/seaice_readparms.F: make ocean_emissivity*stefanBoltzmann the
673      default for SEAICE_emissivity, if useEXF; requires setting a wrong
674      parameter value in global_ocean.cs32x15/input.seaice/data.seaice for
675      backward compatiblity
676    o model/src: use sigmaR in calc_ivdc
677    
678    checkpoint63g (2011/12/16)
679    o pkg/seaice/seaice_growth.F:
680      fix heat conservation of the coupled ocean-seaice system.
681      when SEAICE_HEAT_CONSERV_FIX is defined, the mismatch of
682      solid vs liquid water treatment is resolved via QNET.
683    o pkg/seaice/seaice_growth.F:
684      add missing term for sublimation in saltFlux, which was breaking conservation.
685    o pkg/seaice/seaice_model.F:
686      Remove this patholigical case treatment in evolution branch,
687      where it is un-necessary and breaks conservation.
688      Update global_ocean.cs32x15/results accordingly for
689      output.seaice.txt output_adm.seaice.txt and output_adm.seaice_dynmix.txt
690    o model/src:
691      useRealFreshWaterFlux: remove masking of EmPmP (using maskInC) in
692      external_forcing_surf.F and apply mask directly in S/R SOLVE_FOR_PRESSURE.
693    o pkg/obcs:
694      modify Stevens boundary conditions so that S/R obcs_calc_stevens computes
695      tendency for temperature and salinity that is then applied to update
696      theta and salt in S/R obcs_apply_ts; this requires proper masking of all
697      horizontal advection and diffusion contributions on the boundary (in
698      S/Rs gad_advection, gad_calc_rhs, gmredi_rtransport, gmredi_calc_diff), and
699      removing the mask in S/R timestep_tracer. The advantage of this approach is
700      that the updated tracer values include contributions from the surface
701      forcing and vertical diffusion.
702      This modification changes exp4.stevens because of vertical diffusion.
703    o model/src:
704      change non-curvilinear grid setting to also work with exch2 + blank tiles:
705      - move delX,delY to new header file (SET_GRID.h) and adjust length to 1rst
706        face dimensions.
707      - new S/R INI_LOCAL_GRID to define model tile-local grid (using same units
708        as delX,delY) and called from S/R INI_CARTESIAN_GRID, INI_CYLINDER_GRID
709        and INI_SPHERICAL_POLAR_GRID.
710      change test-experiment global_ocean.90x40x15:
711      - split the domain in many more tiles (9x4 tiles of 10x10 each);
712      - switch to exch2 and remove 1 blank-tile (but only for MPI test).
713      - update results of both test (std & dwnslp).
714    o pkg/diagnostics/diagstat_calc.F: fix problem with non-initialised halos in
715       tmp-fields for TARGET_NEC_SX at the cost of extra loops and less vectorisation
716    o model/src:
717      - take sigma-coords related code out of update_etah.F into new S/R UPDATE_ETAWS
718        and fix initialisation when using sigma-coords.
719    o model/src:
720     - improve Gael's changes from Jan 14, 2011 "addition of an 'update' of hfacc etc.
721       to their current value at the beginning of forward_step.F": add a new run-time
722       switch "doResetHFactors" (default=false) and use it to do (or not) the resetting.
723     - set doResetHFactors=T in the following test exp:
724        global_ocean.90x40x15/input (rStar) & input.dwnslp (linFS),
725        global_ocean.cs32x15/input.seaice (rStar), hs94.cs-32x32x5/input.impIGW (linFS)
726        and tutorial_global_oce_in_p (nonLinFS in p)
727    o pkg/ecco
728      - added IES cost term
729    o verification/advect_xz
730      - scale down the depth by 1/100 (from 200 km to just 2.km)
731      - add secondary test using divergent flow, r-star and implicit vertical advection.
732      - add note (check_conserve_TS.txt) and matlab script to check global
733        conservation of T & S with NonLin-FreeSurf and Adams-Bashforth.
734    o pkg/rbcs:
735      - add missing relaxUFile & relaxVFile in namelist (in rbcs_readparms.F).
736    o pkg/obcs (Stevens BCs):
737      - fix various problems in the phase speed computations of the Stevens
738        boundary conditions:
739        - sign error for western and southern boundaries,
740        - time tendencies were underestimated by factor of dTracerLev and some just
741          zero (for multidim advection schemes) -> now estimate time tendencies
742          from difference between previous (n) time level and the one before (n-1);
743          this requires storing a field per tracer per boundary, also in the pickup
744          files.
745        - replace deltaTmom in cflMer/Zon computation with dTracerLev
746        - set default phase velocity to cflMer/Zon
747      - update verification experiment exp4.stevens
748    o pkg/generic_advdiff (implicit_r):
749      - fix implicit vertical advection conservation with AB and/or NonLin-FreeSurf
750        (remove Tr*d/dz(w) in gad_implicit_r.F and add it in gad_calc_rhs.F);
751      - fix implicit vertical diffusion or advection with NonLin FreeSurf
752        (was using current recip_hFacC instead of future recip_hFacC): set future
753        recip_hFac in thermodynamics.F and pass & use it in all vertical implicit
754        solver S/R ;
755      - fill diagnostics of vertical advective fluxes (computed from tendency)
756        when using implicit vert. advection;
757      - update output of exp that uses NonLin-FreeSurf & implicit vertical diffusion:
758         global_ocean.90x40x15 (fwd+AD), global_ocean.cs32x15 (4 fwd +4 AD),
759         tutorial_global_oce_in_p (fwd), tutorial_tracer_adjsens (AD)
760         and cpl_aim+ocn (used in ocean); to be fixed: bottom_ctrl_5x5.
761    o pkg/diagnostics:
762      - add diags for T & S tendency which goes through Adams-Bashforth.
763    
764    checkpoint63f (2011/11/30)
765    o pkg/obcs/obcs_calc_stevens.F:
766      - join some loops to reduce number of if-statements
767      - fix a bug in code for northern and southern boundaries.
768    o pkg/seaice/seaice_init_varia.F
769      - undo resetting UVM=0 that has slipped in unnoticed in r1.49 and
770        caused zero ice-velocities for the B-grid code
771    o pkg/seaice/seaice_init_fixed.F
772      - fix a bug in the initialisation of the second metric terms
773        k2AtC and k2AtZ: k2AtC was set to the value of k2AtZ and k2AtZ was 0.
774      - this affects all seaice configurations with useCurviLinearGrid = .true.
775        and SEAICEuseDynamics = .true. (default) and SEAICEuseMetricTerms
776        = .true. (default)
777      - the only verification experiment affected is global_ocean.cs32x15:
778        icedyn, seaice, and seaice_dynmix (AD)
779    o pkg/thsice/thsice_diagnostics_state.F
780      - only for TARGET_NEC_SX: initialise all of tmpFld, so that overlap does
781        not contain garbage that can lead to surprises in diagstats_calc.F
782    o model/src:
783      - move bi,bj loops inside INTEGR_CONTINUITY ;
784      - call INTEGR_CONTINUITY directly from forward_step.F
785        (previously called from momentum_correction_step.F)
786      - call UPDATE_ETAH from integr_continuity.F and update initialise_varia.F,
787        forward_step.F and pkg/ecco/the_main_loop.F
788    o model/src/do_oceanic_phys.F:
789      - reset addMass to zero only if useICEFRONT ;
790      - separated k-loop for rhoInSitu calculation ;
791      - add 2 diagnostics for wVel*delta^k(Rho) at constant pressure (= WdRHO_P)
792        and at constant T,S (= WdRHOdP);
793      NOTE: change diagnostics WRHOMASS : this is now simply the Vertical transport
794        of In-Situ Density (Anomaly) (=wVel*rho^bar-k) (previously was Vertical
795        transport of locally-referenced potential density);
796        to recover old diag: (WRHOMASS)_old = (WRHOMASS)_new -1/2 * (WdRHOdP)
797    o gluemnc:
798      - replace ncrcat with ncks when adding variables to *.glob.nc
799      - change the way variables without record dimensions are handled so that
800        files that have variables with and without record variables can be glued:
801        add a record dimension with a new unique name to be able to differentiate
802        between variable with and without a-prior record dimensions. Remove
803        this record dimension before adding the variable to the *.glob.nc file.
804        This procedure automatically works also for grid.*.nc files that do not
805        have any record dimension.
806    o verification/cpl_aim+ocn:
807      - generate new reference output on baudelaire (gfortran, mpich2) (previously
808        from old aces-grid cluster, ao + ifort) and update 'run_cpl_test' script.
809    o pkg/obcs/obcs_calc_stevens.F:
810      - add code for northern and southern boundaries.
811      - reorder some loops to save some operations and so that drFBar can be scalar
812    o model/src:
813      - re-arrange extrapolation calculation in Adams-Bashforth S/R (affects machine
814        truncation) and add diagnostics for Adams-Bashforth tendency increment.
815      - update test-exp. AD output:
816        1D_ocean_ice_column, bottom_ctrl_5x5, lab_sea.noseaicedyn, obcs_ctrl;
817      and FWD output: exp4 (x3), fizhi-cs-32x32x40, fizhi-cs-aqualev20,
818        front_relax (x3), global_ocean.90x40x15 (x2), global_ocean.cs32x15 (x5),
819        global_ocean_ebm, ideal_2D_oce, internal_wave, isomip (x3), lab_sea (x4),
820        matrix_example, MLAdjust (x5), natl_box (x2), tutorial_advection_in_gyre,
821        tutorial_global_oce_in_p, tutorial_global_oce_latlon and
822        tutorial_plume_on_slope.
823    o pkg/diagnostics/diagstats_calc.F: add special code for TARGET_NEC_SX
824      that vectorises. This code uses 3 extra 2D fields, F90 array assignments
825      and F90 intrinsic routines SUM, MINVAL, MAXVAL, but since TARGET_NEC_SX
826      does not even come with an F77 compiler anymore, this should not be
827      a limitation
828    
829    checkpoint63e (2011/11/06)
830    o pkg/seaice adjoint of LSR:
831      - substantially rework STORE dirs.
832      - add new flag SEAICE_LSR_ADJOINT_ITER and parameter SOLV_MAX_FIXED
833        this flag will do SOLV_MAX_ITERS but only store SOLV_MAX_FIXED fields
834        and only perform SOLV_MAX_FIXED adjoint iters.
835        If flag SEAICE_LSR_ADJOINT_ITER is undef-ined, the store in the iteration
836        always goes to same record, meaning that the last forward field will be
837        the one used in the adjoint - an approximation.
838      - now produces non-zero LSR-related gradients, and acceptable gradients for
839        An's zonal (x-z) test case (to be checked in)
840      - lab_sea: produces acceptable gradients for lab_sea with forward/backward LSR
841        (but these are screwed up by the thermodynamics in the first place);
842        reduce from 4 to 3 timesteps to avoid t.d. issue as temporary solution;
843        output_adm.txt also reflects changes to seaice_lsr
844      - global_ocean.cs32x15:
845        * the "default" input_ad.seaice has been re-defined to always exclude dynamics
846          (output_adm.seaice.txt was updated)
847        * new input_ad.seaice_dynmix tests a forward LSR / backward free-drift
848          (output_adm.seaice_dynmix.txt)
849    o test-exp. exp4+stevens:
850      - switch off pTracers and nonHydrostatic (restart problems with NH); update output
851    o pkg/seaice (lsr solver):
852      - put coriolis term into FORCEX,Y (as in seaice_evp.F; previously in rhsU,V only);
853        update output (change truncation) of FWD test exp lab_sea & global_ocean.cs32x15
854      - fix SEAICEuseFREEDRIFT for new OBCS version (ndef OBCS_UVICE_OLD)
855      - new parameter "LSR_mixIniGuess" allows (if=2,4) to mix free-drift solution
856        into initial guess for linearised solver; use weight ~ (1/err)^2,4.
857      - compute (with new S/R) and print initial (+ free-driff sol. if available)
858        and final residual of linearised system.
859    o pkg/pp81: add diagnostics for vertical eddy viscosity and diffusivity
860      (requires new subroutines pp81_init_fixed.F/pp81_diagnostics_init.F)
861    o pkg/obcs: Stevens BCs (still only for east and west)
862      - fix Stevens BCs by using intermediate velocities of previous
863        time step as "baroclinic" contribution rather velocity of one grid cell
864        inside the boundaries; more consistent but makes the entire treatment
865        more complicated, requires new pickup files and two new S/Rs:
866        obcs_copy_uv_n and obcs_save_uv_n
867        keep old version with flag OBCS_STEVENS_USE_INTERIOR_VELOCITY
868        (undefined by default)
869      - silently move computation of some grid factors into separate loops to
870        save some recomputations
871      - add a hack for non-linear free surface
872      - add a verification experiment to exp4 that tests this code
873    o make gluemnc/xplodemnc work with (moron) non-GNU shell tools
874    
875    checkpoint63d (2011/10/25)
876    o pkg/obcs + seaice-dynamics:
877      - new implementation calls OBCS_APPLY_UVICE (in seaice_dynsolver.F) before
878        solving for uIce,vIce and prevent SEAICE_LSR or SEAICE_EVP to modify OB
879        values (consistent with an implicit method).
880      - add option OBCS_UVICE_OLD (in OBCS_OPTIONS.h, defined by default) to
881        return to older implementation (same results as before); note that none of
882        the "experimental" OBCS_SEAICE options are implemented in the new version.
883      - switch test exp. seaice_obcs to use new version (update output).
884    o pkg/seaice:
885      - add few stop (B-grid & CS-exch, B-grid & obcs, AUTODIFF & SEAICE_maskRHS)
886      - add parenthesis in Water-Ice drag calculations (evp & lsr);
887      - in seaice_lsr.F, simplify and fix AA3 setting in case sNx or sNy=1;
888        and fix case SEAICE_waterDrag=0 (but unstable if no or little seaice)
889      - update output of test exp lab_sea that uses evp or lsr (fwd+ad)
890        and global_ocean.cs32x15 (icedyn & seaice fwd+ad).
891    o pkg/layers:
892      - Include potential density as new coordinate (Thanks to David Munday)
893    o pkg/dic:
894      - Remove subroutine CALC_PCO2_APPROX_CO3 from carbon_chem.F and add
895        carbonate computation/output to CALC_PCO2_APPROX
896    o pkg/generic_advdiff
897      - make TAF generate code that vectorizes:
898        gad_dst3fl_adv_*.F, gad_u3c4_impl_r.F
899    o model/src:
900      - improve vectorization also for adjoint code of
901        solve_tridiagonal and solve_pentadiagonal. As this requires up to
902        5 new 3D-fields, this code is only turned on for the combination of
903        ALLOW_AUTODIFF_TAMC and TARGET_NEC_SX. Also remove error message
904        for singular matrix check (only for TARGET_NEC_SX).
905      - remove hard-wiring of CPP-flag ALLOW_SOLVERS_KLOOPINSIDE to
906        ALLOW_AUTODIFF. This flag now needs to be set outside of
907        solve_tri/pentadiagonal.F
908    o pkg/exf:
909      - fix previous modif in exf_readparms.F (revision 1.66: treatment of
910        optional namelist EXF_NML_OBCS).
911      - add many debug-print (to trace down where pkg/cal error msg comes from)
912    o pkg/mom_vecinv/mom_vi_hdissip.F
913      - rearrange loops so that vectorization is improved and in particular
914        the adjoint routine vectorizes. The code is a little longer now, but I
915        think easier to read.
916        Note: CPP-flag MOM_VI_ORIGINAL_VISCA4 is not tested.
917    o pkg/seaice:
918      - allow to specify initial seaice velocity from files (uIceFile,vIceFile)
919    o pkg/exch2:
920      - alternative code (without tile x tile matrix) for cumulated (global) sum;
921        used as default; keep using matrix version in adjustment.cs-32x32x1.
922    o tools/build_options:
923      - after merging some MPI and/or multi-threads specific optfiles so that
924        the modified default optfile support both built (using genmake2 -mpi
925        for the MPI built, using genmake2 -omp for OpenMP built),
926        move now obsolete optfiles to tools/build_options/unsupported/
927       (add copy of email sent to support list in doc/optfiles_changes.txt)
928    
929    checkpoint63c (2011/09/28)
930    o pkg/ebm:
931      - fix ebm_zonalmean.F for several procs in Ydir (nPy > 1); update output of
932        test exp. global_ocean_ebm (affects machine truncation, 12 digits for cg2d)
933    o pkg/seaice (SItracer pickup)
934    * Simple code for pickup of SItracer fields (#define ALLOW_SITRACER)
935      To be done:
936      - thorough testing of missing fields in S/R seaice_read_pickup
937      - thorough matching between generic tracers and specific fields used
938        (e.g. volume-weighted age, area-weighted age, salinity, ...)
939    o pkg/grdchk:
940      - all procs calculate and print finite-difference gradient (for testreport)
941      - change description output used by testreport;
942      - AD testing: also compare and report Finite-difference gradient;
943        => update all output_adm*.txt
944    o test exp. global_ocean_ebm:
945      - switch back useRealFreshWaterFlux (no problem anymore with run-off);
946        and turn on exactConserve; update (fwd) output.
947    o pkg/seaice (LSR):
948      - print to STDOUT number of solver iterations at SEAICE_monFreq interval.
949      - modify solver to deal cleanly with u/v switch at face edges (CS-grid):
950        * identical results with non-CS topology (but save up to half of EXCH calls)
951        * no much changes in cs-32 verification tests since no ice at face edges
952         (differences due to convergence criteria, since nb of iterations changed)
953        * expect some differences on lat-lon-cap grid.
954        update FWD results of global_ocean.cs32x15 test exp. (icedyn & seaice)
955    o pkg/exch2:
956      - add new CPP option to disable Cumul-Sum matrix (to save storage when using
957        many tiles); until alternative coding is added, just add a stop.
958    o pkg/kpp:
959      - move ptracer/salt correction to KPP diffusivity from calc_3d_diffusivity.F
960        to S/R KPP_CALC_DIFF_PTR (+ add tracer-index to argument list).
961    o optfiles:
962      - merged few MPI specific (*+mpi*) and multi-threads specific (*+mth) optfiles
963        into corresponding standard one, which now support different build:
964        (when using "genmake2 -mpi" for MPI built, "genmake2 -omp" for OpenMP built)
965      - add "darwin_amd64_gfortran" optfile (initially from Constantinos, tested by Gael)
966    o pkg/obcs (seaice):
967      - add missing EXCH for uIce,vIce after applying OBCS;
968      - remove S/R EXF_SWAPFFIELDS_X/Y , disable S/R EXF_SET_OBCS_X/Y by adding
969        argument = number of levels to S/R EXF_SWAPFFIELDS_XZ/YZ and S/R
970        EXF_SET_OBCS_XZ/YZ ; update obcs_exf_load.F;
971      - fix EXF_SET_OBCS_XZ/YZ for multi-threaded (assuming loaded arrays are shared)
972      - verification exp. seaice_obcs: split domain in 2 tiles ; add SIZE.h_mpi
973        and eedata.mth for MPI and mutlti-threaded testing.
974    o pkg/flt:
975      - make FLT EXCH working with multi-threads (and MPI + multi-threads);
976      - use buffer for floats IO (trajectories & profiles); size set in FLT_SIZE.h;
977      - fix pickup and trajectories + profiles output with multi-threads;
978      - add parameter to select group of fields to write along trajectory and
979        profile (default unchanged);
980      - only call PORT_RAND* function when flt_noise <> 0;
981      - add multi-threaded test for verification exp. flt_example.
982    o eesupp/src:
983      - fix S/R ALL_PROC_DIE for MPI+multi-threads.
984      - USE_OMP_THREADING: check that number of threads (from eedata) matches
985        actual number (from env.var. setting).
986    o pkg/ebm:
987      - fix multi-threading in ebm_area_t.F ; clean-up EBM.h header file.
988      - add multi-threaded test for verification exp. global_ocean_ebm
989    
990    checkpoint63b (2011/08/29)
991    o pkg/ebm:
992      - fix sign of runoff;
993      - update directly forcing fields (Qnet,EmPmR) to use standard
994        external_forcing_surf.F (remove ebm_forcing_surf.F);
995      - avoid loading forcing fields a 2nd time (1rst time from ini_forcing.F);
996      - set either tauThetaClimRelax (in data) or tauThetaZonRelax (in data.ebm)
997        and apply relaxation towards corresponding SST field (2-D map or ZonAver).
998      - update global_ocean_ebm parameters file data and update output (fwd+ad).
999    o verification/matrix_example:
1000      - split domain in 8 tiles (2x4); add SIZE.h_mpi and eedata.mth for
1001        MPI and mutlti-threaded testing.
1002    o pkg/matrix:
1003      - change name of S/R MATRIX_INIT to S/R MATRIX_INIT_VARIA ;
1004      - fix for multi-tiles (add bi,bj indices to exp/impMatrixCounter);
1005      - fix for multi-threaded (remove DATA statement);
1006      - use standard DIFFERENT_MULTIPLE function;
1007      - add MATRIX_OPTIONS.h
1008    o verification/matrix_example:
1009       To allow to split the domain in several tiles, change the domain size
1010        from 31x31 to 32x32 by adding 1 row (on Southern side) + 1 column (on
1011        Western side) of land points.
1012    o (*_)write_pickup:
1013      - fix few bugs in mypackage_read/write_pickup.F
1014      - in MDS_WR_METAFILES calls, replace "myTime" by a local copy into
1015        array of length 1 (was caught by compiler syntax-check).
1016    o pkg/diagnostics (velocity potential solver):
1017      - fix initialisation of main diagonal matrix (for overlap values)
1018    o tools/build_options:
1019      - towards single optfile for MPI and non-MPI built: merge few +mpi optfile
1020        into previously non MPI one (linux_am64 pgf77,open64,pathf90,ifort11)
1021      - linux_amd64_gfortran: merge +mpi_generic version into standard optfile:
1022        * move IEEE flags to DEVEL section; take IEEE flags from +mpi_generic ;
1023        * FAST case: for now, keep -O3 with ini_masks_etc.F in NOOPTFILES list;
1024        and use "-devel" testreport option for standard testing on baudelaire.
1025    o pkg/grdchk:
1026      - Assume that all gradient-check position are within the same tile
1027        corresponding to global indices (iGloTile,jGloTile) and that
1028        positions (i,j indices or nbeg) are local to this tile;
1029      - set tile local-indices and proc. number according to tile global-indices;
1030      - remove grdchkwhichproc from namelist (retired param);
1031      - send adjoint gradient to all procs so that all procs print it to STDOUT;
1032      - switch on MPI test for global_ocean.90x40x15 AD test experiment.
1033    o adding package bbl (Bottom Boundary Layer)
1034      description in MITgcm/pkg/bbl/bbl_description.tex
1035      example/test experiment in MITgcm_contrib/bbl
1036    o adjoint verifications
1037      - changed 5 experiments to multi-tiles
1038        * global_ocean.90x40x15
1039        * obcs_ctrl
1040        * offline_exf_seaice
1041        * tutorial_dic_adjoffline
1042        * tutorial_tracer_adjsens
1043        changed reference output for those that crossed tile boundaries
1044        (changed choices of gradient check positions)
1045      - with same tiling, switch on MPI test for the last 4 (add SIZE.h_mpi)
1046      - temporary bug fix in grdchk_loc.F for obcs
1047    o genmake2 & testreport
1048      - add target "obj" (just for OBJFILES files) to Makefile;
1049      - add option to specify FEXTRAFLAGS on command line.
1050    o pkg/mypackage:
1051      - remove bi,bj arguments from argument list of S/R MYPACKAGE_CALC_RHS
1052    
1053    checkpoint63a (2011/08/02)
1054    o pkg/diagnostics (velocity potential):
1055      - fix velocity-potential calculation when using OBCS: balance net inflow
1056        at each level (new S/R OBCS_DIAG_BALANCE).
1057      - fix some of the problems with OBCS in stream-function calculation.
1058    o pkg/exf/exf_readparms.F
1059      - make treatment of optional namelists (EXF_NML_04, EXF_NML_SGRUNOFF,
1060        EXF_NML_OBCS) more consistent, so that you need not have these lists
1061        in data.exf when they are not used.
1062    o optim/optim_readdata.F:
1063      - add some output about obcs variables that might help debugging
1064      - add a check about nvarlength
1065    o pkg/ctrl: once again, fix computation of endrec in s/r ctrl_init_rec
1066    o pkg/diagnostics (velocity potential):
1067      - fix mask for OBCS (still problems in stream-function with OBCS);
1068      - add specific parameter (default = main code CG2D params) for solver;
1069      - in case of poor convergence, use solution corresponding to lowest residual.
1070    o pkg/seaice/seaice_growth.F: small changes that permit vectorizable
1071      adjoint code. In general statements like tmpscal=fld(i,j) are problematic
1072      and should be avoided where possible.
1073    o model/src (rStar):
1074      - include r* effect on reference-state (PhiRef) in totPhiHyd
1075        (so that it's really the potential anomaly at the cell center);
1076        affect solution only if z* with full pressure in EOS.
1077      - test-exp global_ocean.90x40x15: reduce viscA4 (was not stable) and
1078        update output (because of z* in totPhiHyd and viscA4 changes);
1079      - keep the previous diagnostics as "PHIHYDcR" (closer to potential anomaly
1080        @ constant r) until interpolation at constant r is implemented.
1081    o pkg/diagnostics
1082      - fix RCENTER diagnostics in case cell center is not at interface middle
1083    o add code for TEOS-10 (www.teos-10.org, McDougall et al. 2011). Use
1084      this eos with eosType = 'TEOS10', in data (PARM01). This eos implies
1085      that THETA and SALT are "conservative temperature" and "absolute
1086      salinity"
1087    o pkg/ctrl
1088      - fix computation of endrec in s/r ctrl_init_rec
1089      - ctrl_pack/unpack_*: remove unused variables and some obsolete code
1090    o pkg/seaice/seaice_growth.F
1091      - fix recomputation with FENTY_AREA_EXPANSION_CONTRACTION code,
1092        remove then obsolete STORE directives
1093      - fix STORE directives for tice and tices, so that only the
1094        appropriate part of the fields are stored (and not the entire
1095        field); update global_ocean.cs32x15.seaice AD output.
1096      - cosmetic changes: adjust CPP flags and indentation for better
1097        legibilty
1098    o pkg/autodiff: add mnc-output of adBottomDragFld (code contributed by
1099      Chris Wilson)
1100    o pkg/gmredi:
1101       Add Sub-Meso Eddies parameterisation from Baylor (for now, disabled with TAF),
1102       and test it in verification exp. "front_relax.bvp" (update output.bvp.txt)
1103    
1104    checkpoint63  (2011/07/11)
1105    o pkg/exch2:
1106     - rename+move: nTiles in W2_EXCH2_PARAMS.h --> exch2_nTiles in W2_EXCH2_TOPOLOGY.h
1107     - exch2 version of Cumul-Sum routine: S/R W2_SET_MAP_CUMSUM set up the
1108       (2*nTiles)x(nTiles) Cumul-Sum matrix and Master Proc collects all tiles X,Y
1109       increments, calculates Cumul-Sum @ tile origin and sends results to each tile.
1110    o pkg/diagnostics:
1111     - deal with pairs of post-processed diags which are computed together; in
1112       particular, re-order list of diags within 1 file to save 2nd computation.
1113     - add S/R to compute velocity stream-function (called after velocity-potential
1114       calculation) from divergence free transport -> new diagnostics "PsiVEL".
1115     - add parameter to select grid-point location where PsiVEL == 0.
1116    o eesupp/src:
1117       new S/R to calculate cumulated sum on tiled array, corner grid-cell location
1118       (specific S/R needed with exch2 topology - for now, just print an error msg)
1119    o pkg/shelfice
1120     - Implement friction velocity-dependent transfer coefficients following
1121       Holland and Jenkins, JPO, 1999
1122       Original code by M. Losch with small modifs.
1123       Enable with CPP option SHI_ALLOW_GAMMAFRICT
1124       and runtime flag SHELFICEuseGammaFrict
1125    o verification lab_sea & global_ocean.cs32x15:
1126     - use tools/xmakedepend (instead of cyrus_makedepend, in genmake_local):
1127       does not miss some dependencies (but is slower) and also works with many files
1128       (default makedepend limitation for AD built).
1129     - use cyrus_makedepend in adjustment.128x64x1 (so that it still tested).
1130    o pkg/diagnostics:
1131     - add run-time parameter "useMissingValue" (def=False) to fill land-point
1132        (i.e., where mask=0) with MissingValue ; used only in MNC output file.
1133       This replaces CPP-option DIAGNOSTICS_MISSING_VALUE.
1134     - Extend the use of "missing_value" setting from data.diagnostics for the case
1135       of counter-diagnostics (where fraction-weight is zero). This applies both to
1136       MNC and MDS output files.
1137    o pkg/seaice/seaice_growth.F:
1138      - add 'a priori' cap of latent heat flux based on actual mass considerations
1139        when SEAICE_ADD_SUBLIMATION_TO_FWBUDGET is used in conjunction with the
1140        non-legacy seaice_solve4temp.
1141      - add diagnostic of the residual sublimation freshwater flux (the freshwater
1142        flux taken from the ocean if the total actual latent heat fluxes exceed
1143        the maximum)
1144      - remove the CPP switch around the *_FWbySublim unit change and move diagnostic
1145       fill for SIatmQnt, SIfwSubl, SIatmFW to the end of seaice_growth.F.
1146      - add diagnostic of the actual sublimation freshwater flux (that is 0. ifndef
1147       SEAICE_ADD_SUBLIMATION_TO_FWBUDGET) and of the latent heat flux (evap+sublim).
1148      - bug fix : frWtrAtm needs a_FWbySublim ifdef SEAICE_ADD_SUBLIMATION_TO_FWBUDGET.
1149      - bug fix : missing part to Martin's r_FWbySublim pathological case fix.
1150    o verification 1D_ocean_ice_column:
1151       made model domain truly 1x1x23 instead of 5x5x23 with only center cell (3,3,:) wet
1152       update results
1153    o pkg/diagnostics:
1154     - Implement setting of "Post-Processed" diagnostics (corresponding to gdiag(5)='P')
1155       which are not filled-up but computed from other diags ; In this case, the mate
1156       diag points to the primary (filled-up) diag to used for post processing.
1157     - Update Velocity-potential computation using post-processed diag framework.
1158     ==> Change the ordering of fields and time-periods in MDS output file
1159       when using periodic averaging: now writes one time record with the full set
1160       of fields for this time period, then the next time reccord (it used to be
1161       one field with the full set of time records then the next field).
1162         Note: this is now similar to NetCDF (MNC) output file. <==
1163    
1164    checkpoint62z (2011/06/21)
1165    o adjoint monitor:
1166     - Add adjoint monitor output for packages exf, seaice
1167       and update relevant testreport output
1168    o pkg/seaice:
1169     - re-order diags inits so that they appear in order in available_diagnostics.log
1170     - added diags: hsnow thermo. rates of change, area preceeding ridiging process,
1171       area/heff/hsnow preceeding thermodynamic growth/melt.
1172     - modified diag: SIdA; output actual effect, as the description states.
1173     - modified description: SIqneti, SIqneto, SIuheff, SIvheff, SIdAb*, HSNOW.
1174     - retired redundant diags: SIyneg, SIfice, SIsnwice, SIthdgrh.
1175       (SIyneg->SIdHbOCN; SIfice->SIdHbATC; SIsnwice->SIdHbFLO;
1176        and SIthdgrh->SIdHbOCN+SIdHbATC+SIdHbATO)
1177     - modified diags (2) : switch all SIdA*, SIdH*, SIdS* from delta to rates.
1178     - added diagnostics for seaice generic tracers (SItr*).
1179     - added SItrUnit and SItrNameLong run time param (for SItr* diags).
1180     - in diag names, replaced 'PrTh' abbrev. of 'preceeding thermo' with 'PT'.
1181     I. Fenty: 18-Jun-2011:
1182     Minor changes to seaice package:
1183     1) Retired old variables (A22, SEAICE_lhsublim, areaMax, areaMin, hiceMin) and
1184        added some new ones (SEAICE_area_reg, SEAICE_hice_reg, SEAICE_area_floor)
1185       - Differentiated "regularization variables" from "floor variables"
1186        * areaMin became SEAICE_area_reg (old A22) and SEAICE_area_floor
1187        * hiceMin became SEAICE_hice_reg (old hiceMin)
1188          (with _reg meaning regularization variable)
1189       - SEAICE_lhSublim becomes lhSublim, the sum of SEAICE_lhEvap and SEAICE_lhFusion
1190        so as to ensure energy conservation when going between phases
1191      - A22 was not used anywhere
1192     2) Changed regularization procedure for heffActual and hsnowActual to ensure
1193        well-boundedness and smooth adjoint in seaice_growth.F
1194     3) Fixed a bug where seaice_solve4temp would not recognize ice-free grid cells
1195        because the old regularization always set heffActual >= 0.05 cm
1196     4) Changed the model so that the default behavior is to put a small (10^-5) "floor"
1197        on AREA when HEFF > 0.
1198      - went from requiring ALLOW_PRECLUDE_INFINITESIMAL_AREA to be defined to
1199        requiring that DISABLE_AREA_FLOOR *not* be defined
1200     Affected verifications:
1201      - 1D_ocean_ice_column (output.txt output_adm.txt)
1202      - global_ocean.cs32x15 (output.seaice.txt output_adm.seaice.txt)
1203    o pkg/diagnostics:
1204      - move MNC code from diagnostics_out.F into new diagnostics_mnc_out.F (2 S/R).
1205      - rename S/R GETDIAG to DIAGNOSTICS_GET_DIAG and change type of 1rst argument
1206        (was _RL, now integer) with option = 0 to retrieve all levels.
1207      - add pieces of code to compute velocity potential at each level (new diagnostics
1208        PhiVEL, works only when UVELMASS & VVELMASS are also turned on);
1209        for now, using same params as CG2D (target-resisual, max Nb of iter ...).
1210      - fix few issues with counter diagnostics in diagnostics_setdiag.F &
1211        diagstats_setdiag.F (if diagnostic counter is itself a counter diag)
1212        and in diagnostics_fract_fill.F (do not need a valid pointer for the
1213        diagnostics counter-mate); check that definition of counter-diagnostic
1214        includes a valid counter-mate (in diagnostics_set_levels.F).
1215    o model/src (rStar):
1216      - add rStar scaling factor in diags_phi_hyd.F (similar to calc_grad_phi_hyd.F);
1217        affect solution only if z* with full pressure in EOS;
1218        update output of test-exp global_ocean.90x40x15.
1219    o pkg/seaice:
1220      - introduce siEps=1e-5 parameter
1221      - use areaMax in AREA update (part 4), consistent with ridging step (part 2.5).
1222      - re-organize SEAICE_ADD_SUBLIMATION_TO_FWBUDGET code.
1223      - introduce ALLOW_SITRACER and seaice_tracer_phys.F to handle generic seaice tracer.
1224        For now it covers, and was tested for, ice salinity and age (attached to HEFF),
1225        as well as ice cover age and ridging index (attached to AREA).
1226        For now the run time parameters (in data.seaice/SEAICE_PARM03) are
1227        SItrName (e.g. 'age') and SItrMate ('HEFF', which is the default, or 'AREA').
1228        Up to SItrMaxNum=3 tracers can be used simultaneously.
1229    o pkg/salt_plume:
1230      -introduce SPsalFRAC run time parameter that sets the fraction of the
1231       salt by-product of ice growth (SPsalFRAC*(1-SIsalFRAC)*salt typically)
1232       that gets vertically redistributed (fluxed down) by pkg/salt_plume.
1233    o model debug options:
1234      - Switch reading of debugMode from S/R INI_PARMS (parameter file "data", stored
1235        in PARAMS.h) to S/R EESET_PARMS (parameter file "eedata", stored in EEPARAMS.h).
1236      - Refine debug-msg printing selection (3 new levels):
1237        debugMode  : controls printing of debug messages (sequence of S/R calls).
1238        debugLevel : controls printing of algorithm-relevant auxiliary/debug messages
1239         debLevZero =  0 ; /* level of disabled aux. msg printing */
1240         debLevA =  1 ; /* level of minimum  aux. msg printing */
1241         debLevB =  2 ; /* level of low aux. print (report read-file opening)*/
1242         debLevC =  3 ; /* level of moderate debug prt (most pkgs debug msg) */
1243         debLevD =  4 ; /* level of enhanced debug prt (add DEBUG_STATS prt) */
1244         debLevE =  5 ; /* level of extensive debug printing */
1245        New debugLevel default: with default debugMode value (=F),
1246          = 2 (debLevB) or = 1 (debLevA) in case ALLOW_AUTODIFF is defined.;
1247          and if debugMode=T, default debugLevel = 4 (debLevD).
1248        Relation with previous settings:
1249         debLevB (=2) corresponds to former debLevA (=1)
1250         debLevD (=4) corresponds to former debLevB (=2)
1251        Note:
1252         a) if debugLevel=0, skip WRITE_GRID call when nIter0 > 0 (same as before);
1253         b) default debugLevel=1 is convenient in AD runs (avoid many file opening msgs);
1254            to recover previous default, set debugLevel=2 (e.g. AD-test hs94.1x64x5)
1255      - Add new parameter (printResidualFreq, read from PARM02 namelist) to print
1256        detailed CG solvers convergence; off (=0) by default, except if debugLevel=5.
1257    o pkg/obcs:
1258      - change OBCSfixTopo default from True to False (should not change the results);
1259        keep OBCSfixTopo=T in verification-exp. seaice_obcs.
1260    o pkg/thsice:
1261      - fix bug in thsice_calc_thickn.F (was introduced in version 1.18) in
1262        2nd layer seaice sublimation (unlikely to happen)
1263      - use Interior mask for OBCS in thsice_advection.F (similar to what is
1264        done in gad_advection & seaice_advection).
1265    o adjoint:
1266      bug fix spotted by Gael Forget:
1267      seaice_advection and thsice_advection still had
1268      legacy CPP options to avoid CS corner updates for adjoint
1269    o pkg/seaice:
1270      => Change some of the defaults (2011/05/29):
1271         - change SEAICEuseFluxForm default (from False to True)
1272         - change DIFF1 default (from 0.004 m/s to 0. m/s)
1273         And print warnings if DIFF1 is not set in data.seaice and centered
1274          avection scheme is used without any diffusion.
1275      also:
1276      - fix seaice_diffusion calls in default AdvScheme part of seaice_advdiff.F;
1277      - set SEAICEdiffKh[] default in the same way as SEAICEadvSch[]
1278      - stop if DIFF1<>0 with SEAICEadvScheme <> 2, if DIFF1<>0 with any
1279        other non-zero SEAICEdiffKh[] diffusivity, if SEAICEadvSalt=T with
1280        #undef SEAICE_VARIABLE_SALINITY, if SEAICEadvAge=T with #undef SEAICE_AGE.
1281      update results of test exp.:
1282         lab_sea: output.fd (switch to AdvScheme=33 with diffKh=20)
1283             output.hb87, output_adm.evp (SEAICEuseFluxForm=T and diffKh=200)
1284             output_adm.noseaicedyn (SEAICEuseFluxForm=T)
1285         offline_exf_seaice: output.seaicetd, output_adm (SEAICEuseFluxForm=T)
1286         seaice_obcs: output (SEAICEuseFluxForm=T)
1287      and prescribe old default for SEAICEuseFluxForm (=F) and DIFF1 (=0.004)
1288          for standard fwd & AD lab_sea tests (to keep the same output).
1289    o pkg/seaice/seaice_growth.F:
1290      - use Ian Fenty's capping formulas for actual ice
1291      thickness thoughout EVOLUTION branch.
1292      - put treatment pathological case #2) in CPP brackets
1293      (ALLOW_AVOID_INFINITESIMAL_AREA, undef by default).
1294      - update global_ocean.cs32x15 and 1D_ocean_ice_colum results accordingly.
1295    o pkg/seaice:
1296      - seaice_diffusion.F : remove the min(DX,DY) factor permanently;
1297      pass the Laplacian diffusivity (in m^2/s) diffKh as a parameter;
1298      also pass fac as a param, which can be 1. (to update the tendency
1299      field) or the time step (to update the field itself).
1300      - seaice_advdiff.F: for multidim, call seaice_diffusion with
1301      e.g. SEAICEdiffKhHeff and with fac=1; for single-dim, call
1302      seaice_diffusion with e.g. SEAICEdiffKhHeff and with fac=time step.
1303      - SEAICE_PARAMS.h, seaice_readparms.F, seaice_check.F :
1304      hooks to handle SEAICEdiffKhHeff, SEAICEdiffKhArea, etc.
1305    o pkg/seaice:
1306      diffusion with centered advection scheme (diffus.F & advect.F):
1307      - simplify S/R DIFFUS (put deltaT & DIFF1 factor outside, move EXCH outside)
1308        to just compute the laplacian of input-field.
1309      - unroll k loop (harmonic,biharmonic diff) in advect.F to save 1 exch call.
1310      - fix flux-form version in diffus.F to conserve tracer.
1311      update output of lab_sea.fd & lab_sea.hb87 (1rst set of modif affects
1312       machine truncation) and lab_sea.salt_plume (conservative flux-form modif)
1313    
1314    checkpoint62y (2011/05/26)
1315    o pkg/seaice:
1316     - seaice_growth.F : in EVOLUTION branch, always include
1317       a_QSWbyATM_cover in qnet (as it should be).
1318     - verification/global_ocean.cs32x15 : update results accordingly
1319       (output.seaice.txt output_adm.seaice.txt).
1320    o pkg/seaice + obcs:
1321     - use maskInW & maskInS in multi-dim advection and biharmonic diffusion:
1322       equivalent of assuming no tracer gradient outside the OB region.
1323       update output of seaice_obcs (uses DIFF1 <>0 => biharmonic diffusion)
1324     - remove calls to OBCS_COPY_TRACER after EXCH calls (no longer needed
1325       after changes above);
1326     - obcs+seaice cleaning: apply seaice-tracer OB values to tracer field
1327       only at OB location (instead of over a band of OLx width).
1328    o pkg/seaice:
1329     - fix wrong indices in old (non Flux-Form) diffusion default S/R diffus.F
1330       (dxG(I+1, ...) changed to dxG(I, ...), no impact on Lat-Lon grid)
1331    o pkg/obcs:
1332      - split header file "OBCS.h" into 4 separated files:
1333        OBCS_PARAMS.h, OBCS_GRID.h, OBCS_FIELDS.h & OBCS_SEAICE.h
1334       Note: OBCS_PARAMS.h & OBCS_GRID.h can be included without OBCS_OPTIONS.h
1335         (contain no conditional statement which depends on OBCS options).
1336      - move "useOBCSYearlyFields" from "data.obcs" (hold in OBCS_PARAMS.h)
1337        to parameter file "data.exf", namelist EXF_NML_OBCS (in EXF_PARAM.h).
1338    o ctrl, cost, grdchk & autodiff pkgs:
1339      - make options file more standard (like other {PKG}_OPTIONS.h file but
1340        with AD_CONFIG.h); clean-up some of the included header files.
1341    o pkg/obcs:
1342      - do not mask tracer when applying OB (tracer == 0 could generate problems)
1343      - apply tracer OB values to tracer field only at OB location (instead of
1344        over a band of OLx width)
1345      - clean-up obcs_apply_w.F & obcs_apply_eta.F (since less calls to these S/R)
1346      - remove OBCS_MULTIDIM_OLD_VERSION code in gad_advection.F and remove
1347        obcs_apply_tloc.F & obcs_apply_sloc.F
1348    o obcs in model/src:
1349      - call OBCS_APPLY_W only if NonHydrostatic.
1350      - call OBCS_APPLY_ETA only if NonLinFreeSurf.
1351      - reset dEtaHdt and wVel to zero outside OB interior region ;
1352      - leave tracer unchanged outside OB interior region: This has no effect
1353        on the solution but just to prevent unrealistic tracer value outside OB.
1354      - zero out velocity outside OB interior region: This has no effect on
1355        the solution but just to prevent unrealistic velocity outside OB.
1356    o obcs and non-lin free-surf:
1357       move call to OBCS_APPLY_R_STAR from update_r_star.F to calc_r_star.F
1358       and call to OBCS_APPLY_SURF_DR from update_surf_dr.F to calc_surf_dr.F
1359       + add argument "etaFld" to OBCS_APPLY_R_STAR & OBCS_APPLY_SURF_DR:
1360       this fixes missing EXCH + get consistent eta OB value (+ fix restart).
1361       update results of test-exp. exp4(nlfs).
1362    o exp4 (nlfs) test-exp:
1363       use OBC for Eta at Western & Eastern OB (to test prescribing Eta
1364       with NonLin-FreeSurf); update output.nlfs.txt
1365    o obcs and 2d/3d solver norm:
1366       use interior masks (maskInC) to cancel out cg2d & cg3d matrix coeff at OB
1367       and outside OB interior region (will allow to place OB further inside the
1368       domain). Depending on the domain, can affects cg2d-Norm (previous
1369       cancellation outside OB was only partial), e.g. in exp4 & obcs_ctrl,
1370       and cg3d-Norm (previous Norm was computed before canceling OB terms),
1371       e.g. in tutorial_plume_on_slope.
1372      - update output of exp.: exp4 (x2), obcs_ctrl and tutorial_plume_on_slope.
1373    o pkg rbcs:
1374      - split RBCS.h into 3 files: RBCS_SIZE.h, RBCS_PARAMS.h & RBCS_FIELDS.h
1375      - add capability to apply relaxation to horizontal velocity uVel & vVel.
1376    o pkg/grdchk: add gradient check for control variable xx_shifwflx
1377    o pkg/shelfice/shelfice_init_fixed.F
1378      fix CPP-flag combinations
1379    o pkg/seaice: Merge iceage code of Pierre Rampal
1380      * update/change/correct ice age calculations
1381      * add age updates for pathological cases
1382      Probably needs more testing...
1383    
1384    checkpoint62x (2011/05/13)
1385    o pkg/mom_vecinv:
1386       high-order vorticity scheme: use interior masks (maskInW & S)
1387       to zero-out (outside OB) gradient of vorticity.
1388    o verification exp.:
1389       turn on "useEnergyConservingCoriolis" (better discretisation) in exp.
1390       hs94.128x64x5 and seaice_obcs ; update results.
1391    o pkg/obcs:
1392      fix bug in OBeta for YZ sections in obcs_exf_load.F
1393    o pkg/ctrl, pkg/shelfice, and optim:
1394      - add new control variable xx_shifwflx (fresh water flux underneath ice
1395        shelves). This is almost as tedious as obcs-ctrl, because the
1396        variables needs its own mask.
1397      - add a cost function term that penalizes the deviation of xx_shifwflx
1398        from the first guess (zero) in analogy to other control variables
1399    o pkg/shelfice:
1400      - start basic adjoint
1401    o pkg/ctrl:
1402      - remove extra 2D field "for good measure" when initializing in
1403        ctrl_set_globfld_[xy/xz/yz].F
1404      - replace hard coded precision 32 (a bug) in ctrl_map_ini_gen by ctrlprec
1405      - improve error messages in ctrl_set_unpack_*
1406    o OBC implementation in momentum:
1407       use interior masks (maskInC,W & S) in momentum S/R:
1408       - multiply divergence, tension and some del^i.u or del^j.v by maskInC
1409       - multiply del2u,del2v by maskInW/S (biharmonic viscosity)
1410       - multiply horiz. grad of vorticity by maskInW/S (in Leith scheme)
1411       - multiply gradient of wVel by maskInW/S in del2w calculation (NonHyd)
1412       Motivation: fix/clean implementation of OBC with biharmonic-viscosity
1413        (and also with Leith/Smagorinsky harmonic-viscosity).
1414       Update output of experiment dome and exp4 (+nlfs).
1415    o exp4 test-exp:
1416      - turn on: nonHydrostatic, exactConserv, viscA4 (with momDissip_In_AB=F)
1417        and prescribe time-varying OB (without pkg/exf) for zonal-velocity
1418        at Western & Eastern Boundaries (+/- 1 per-cent); Also prescribe
1419        time-varying OB at Western-side for wVel (NonHyd); update output.
1420      - add secondary set-up (.nlfs) using NonLin FreeSurf (z*) + mom_vecinv
1421        and biharmonic-viscosity ; also use prescribed time varying OB.
1422    o pkg/obcs:
1423      fix bug in OBWeta,OBWeta indices in obcs_apply_r_star.F
1424    o model/src:
1425      - fix startTime setting when baseTime<>0 & nIter0=0 are specified ;
1426      - initialise startTime & nIter0 with unlikely values: allows to set one
1427        from the other without ambiguity.
1428    o seaice_obcs test-exp.:
1429      add small diffK4T,S to test biharmonic diffusivity with OBCS ; update output.
1430    o pkg/obcs:
1431      - remove calls to OBCS_COPY_TRACER after EXCH for T,S & pTracer:
1432        no longer needed with maskInC,W,S in pkg/generic_advdiff.
1433    o pkg/seaice:
1434      - retired SEAICE_SALINITY and SEAICE_salinity in favor of
1435        SEAICE_VARIABLE_SALINITY and SIsalFRAC, respectively.
1436      - fixed bug in the initialization of sea ice salinity variable HSALT
1437        in seaice_init_varia.F  (removed dependence on ICE2WATR)
1438    o fizhi-cs test exp.:
1439       switch reference output convention for these 2 non-standard test-exp,
1440        from: pgi  6.1-5 on faulks (FC.6, -of linux_ia32_pgf77+authors_fc5)
1441          to: ifort 11.1 on baudelaire (FC.13, -of linux_amd64_ifort11)
1442       reason: faulks might get retired soon and pkg/fizhi has still Pb with gfortran
1443    o model/inc:
1444      - change type of PmEpR array (from _RS to _RL) to fix restart (with "-use_r4")
1445        of exp. global_ocean.90x40x15 (Suncronous time-stepping + Real-FW + NonLin-FS)
1446    o pkg/seaice:
1447      - fix calculation of saltFlux and saltPlumeFlux when using SEAICE_SALINITY
1448    o verification/lab_sea, 1D_ocean_ice_column, seaice_obcs, global_ocean.cs32x15
1449      - updated output*.txt files due to bug fixes in salt, saltPlumeFlux,
1450        and initial HSALT
1451    
1452    checkpoint62w (2011/04/26)
1453    o pkg/mom_fluxform:
1454      - fix calculation of del2u & del2v (no-slip BC) when using Non-Lin Free-Surf.
1455      - use parameter "sideDragFactor" in no-slip BC side-drag part.
1456      - update output of exp. global_ocean.90x40x15
1457    o pkg/mom_vecinv:
1458      mask del2u & del2v (no effect on results, but cleaner & closer to mom_fluxform)
1459    o update seaice exp.:
1460      use more consistent parameter values (remove "backward compatability only":
1461       ICE2WATR, SEAICE_lhSublim, SEAICE_cpAir, SEAICE_rhoAir + set rhoConstFresh)
1462      related to thermodynamics seaice. Update output (fwd+AD) of exp.:
1463       1D_ocean_ice_column (x2), lab_sea (x8), ioffline_exf_seaice (x2) & seaice_obcs
1464    o update test-exp global_ocean.90x40x15:
1465      o use default CD_CODE_OPTIONS file (Adams-Bashforth on CD Mom & Coriolis).
1466      o increase Overlap size from 2 to 3 (to allow to test bi-harmonic Visc.)
1467      o new pickup-files from a 100.yr run with pkg/down_slope (input.dwnslp params)
1468      o turn on zStar & viscA4 in standard set-up (dir input/)
1469        and update output files: output.txt & output.dwnslp.txt
1470    o new AD-test experiment: obcs_ctrl
1471      (From Matt MITgcm_Contrib/SOSE/BoxAdj) to test OBCS as control vector.
1472    o pkg/dic:
1473      fix two bugs in handling water vapour pressure in carbonate chemistry
1474      and air-sea fluxes. Found by Val Bennington and Galen McKinley
1475      (add DIC Option = WATERVAP_BUG to recover old results)
1476      update output of tutorial_global_oce_biogeo (fwd+AD) & tutorial_dic_adjoffline
1477    o adding allowInteriorFreezing option to check for water below freezing point
1478      at depth and bring the negative heat anomaly to the surface level
1479    o pkgs _fields_load:
1480      - extend GET_PERIODIC_INTERVAL to deal with non-periodic case (from pkg/rbcs)
1481      - use new S/R GET_PERIODIC_INTERVAL in pkgs:
1482        bulk_force, cheapaml, cfc, dic, obcs (+ ctrl/ctrl_get_gen_rec), offline and
1483        rbcs to get interpolation weights and time reccord number.
1484      - fix multi-threading in aim_fields_load.F
1485      - apply EXCH to temp arrays [0,1] after reading in dic_fields_load.F
1486    o external_fields_load:
1487      new S/R GET_PERIODIC_INTERVAL to calculate which time-record (and linear
1488       interpolation weights) to use in a periodic time-series ; do not divide by
1489       time-step to convert to integer:
1490       - this fixes case where externForcingPeriod is not multiple of time-step
1491          (Thanks to Christopher L. Wolfe)
1492       - this fixes case where externForcingPeriod is an odd multiple of time-step
1493         (was wrong by half of time-step); update results of tutorial_global_oce_in_p.
1494      store index of time-record which is currently loaded:
1495       - works without any assumption on sequence of calls to EXTERNAL_FIELDS_LOAD ;
1496       - needed for the adjoint but not yet used because of extensive recomputations;
1497         (to be fixed soon)
1498    
1499    checkpoint62v (2011/04/02)
1500    o verification/1D_ocean_ice_column added to test Ian Fenty's
1501      pkg/seaice_growth.F modifications for improving sea ice code differentiability
1502    o update output of exp4, internal_wave, seaice_obcs, tutorial_plume_on_slope
1503      (new velocity statistics after changing maskInW & maskInS definition)
1504    o pkg/generic_advdiff with OBCS:
1505      use maksInW & maskInS in advective flux and in biharmonic diffusion calculation:
1506      equivalent to assumption of no tracer gradient outside the OB region.
1507      This will affect the results if using obcs+biharmonic diffusion.
1508      update output_adm.txt of experiment bottom_ctrl_5x5 (not expected since no obc)
1509    o pkg/obcs:
1510      change definition of maskInW & maskInS: leave OB edges inside (maskIn=1)
1511      (e.g., maskInW(OB_Ie)=1 ) so that velocity normal-component at OB is still
1512      in Interior region. No impact on solution but affects Velocity monitor stats.
1513    o pkg/ptracers (adjoint)
1514      New option AUTODIFF_PTRACERS_SPLIT_FILES for writing separate
1515      tape file for each tracer
1516    o model/inc/src and pkg/autodiff: add parameters that allow to turn
1517      of parts of the adjoint code at run time. For now, there are only
1518      useKPPinAdMode, useGMrediInAdMode, and useSEAICEinAdMode. These
1519      parameters are set in data.pkg.
1520      This is the lazy coward's version of doing this, but still useful for
1521      debugging. In order to do it right, everything needs to be moved to
1522      pkg/autodiff.
1523    o pkg/autodiff: fix global_sum_tile_ad.F by resetting adsumPhi at
1524      the end; this fixes the adjoint balancing code for open boundaries.
1525    o pkg/ctrl:
1526      - change behavior of xx_${varname}period to be analogous to exf-conventions:
1527        xx_${varname}period =   0.,  means time-independent control part
1528        xx_${varname}period = -12., means one-year-periodic monthly control part
1529      - introduce helper routine ctrl_init_rec (part of ctrl_init.F) to
1530        clean up ctrl_init a little, remove unused variables
1531      - ctrl_init: fixed the handling of the start/endrec for obcs-variables
1532      - move "call cal_GetMonthsRec" from s/r ctrl_get_gen to s/r ctrl_get_gen_rec
1533    
1534    checkpoint62u (2011/03/15)
1535    o model/src:
1536      - for the adjoint, change NonLin-FreeSurf initialisation sequence: fill-in
1537        h0Fac from INITIALISE_FIXED and reset hFac to h0Fac in INITIALISE_VARIA ;
1538      - in initialise_varia.F (except for ALLOW_DEPTH_CONTROL) remove 2nd call to
1539        INI_DEPTHS, INI_MASKS_ETC & INI_LINEAR_PHISURF.
1540    o pkg/ctrl/obcs/ecco:
1541      - remove obsolete, unused, and partially broken code:
1542        ctrl_obcsvol/ctrl_obcsbal/ctrl_volflux and code within
1543        ALLOW_CTRL_OBCS_BALANCE
1544      - put a stop statement into ecco/cost_obcsvol.F, but also add
1545        cost_obcsvol to ecco_ad_diff.list
1546    o pkg/ecco: fix counting cost function contributions for obcs (code
1547      by Matt M.) and diffkr for diagnostics
1548    o pkg/ecco, pkg/ctrl, pkg/grdchk:
1549      add cost penalty terms for initial uvel, vvel, eta controls
1550      and I/O for prior error files
1551    o pkg/mdsio:
1552       move mds_check4file.F from eesupp/src to mdsio_check4file.F ; add option
1553       (new argument) to check for tiled file in mdsioLocalDir : this fix the
1554       restart from pickup_som , pickup_dic (& dic_co2atm) with mdsioLocalDir.
1555    o pkg/ctrl:
1556     - ctrl_obcsbal.F, ctrl_obcsvol.F: replace last calls of ctrl_getrec by
1557       ctrl_get_gen_rec, put a stop statement into ctrl_getrec. Remove
1558       unused and superfluous variables
1559     - ctrl_get_gen_rec.F: catch the case of xx_genperiod=0.
1560    o pkg/ecco
1561     - enable adjoint of Stevens OB
1562    o pkg/ctrl/ecco/grdchk:
1563      - remove global declaration of tmpfldx/yz and tmpfldx/yz2.
1564        Fortunately, we do not have any tests for the numerous cpp-flagged
1565        option of "obcs as control parameters" so we will never know
1566        if this is an improvement (but at least now things compile).
1567      - remove an obsolete initialization from ecco_cost_init_barfiles.F
1568      - fix some problems within never used ifdefs to make the code compile
1569    o pkg/obcs:
1570     - Refine Interior mask definition to work with more complex OB (e.g.
1571       if OB_Ie < OB_Iw); In case default setting is not sufficient, allows to
1572       read in Interior mask from file. Check if Interior mask is consistent
1573       with OB list of indices.
1574    o pkg/seaice
1575     - beginning code for a seaice tracer package,
1576       but currently only used for seaice age: SEAICE_AGE
1577       SEAICE_num = 4
1578       iTracer = 1: area-weighted ice age
1579               = 2: volume-weighted ice age
1580               = 3, 4: template for one-year vs. multi-year ice
1581       data.seaice has new namelist SEAICE_PARM03 for arrays related to
1582       SEAICE_num
1583    
1584    checkpoint62t (2011/03/05)
1585    o pkg/obcs:
1586     - obcs_apply_uv.F: change to a 2 steps method, first tangential component;
1587       then normal component. This ensures that the normal component is set
1588       correctly even when it conficts with tangential setting from an other OB.
1589       Affects results of test-experiment seaice_obcs: update the output.txt
1590    o pkg/obcs:
1591     - add code to monitor statistics of dynamical fields at OB.
1592     - take OBCS_BALANCE code out of obcs_calc.F into new S/R OBCS_BALANCE_FLOW :
1593       - fix to OBCS_BALANCE code (right hFac ; deal with simple OB intersection).
1594       - change default: balance the Net inflow through all OB (instead of balancing
1595         each OB separately); keep the old method if setting OBC_balanceFacX < 0.
1596     - switch on useOBCSbalance in dome experiment: only correct Western OB outflow
1597       to match Nortern OB inflow (OBCS_balanceFacN=0).
1598    o pkg/seaice:
1599     - redefined actual sea ice age to be ICEAGE/HEFF ifdef SEAICE_AGE_VOL
1600    o pkg/seaice (seaice_growth v 1.113):
1601     - reverting seaice_growth to v 1.111 in order to have code with exact bit
1602       compatibility with MITgcm_contrib/ifenty/Fenty_seaice_thermo_code_merge
1603       CPP option SEAICE_OCN_MELT_ACT_ON_AREA removed in v 1.112 is reintroduced
1604       runtime flag SEAICEareaFormula is kept but is inactive
1605    o model/src:
1606     - add new param to scale curvilinear grid distance and area when using
1607       a different sphere radius from the grid-files.
1608     - test/check multi-threads EXCH applied to local variable (cg2d_x)
1609    o adjoint:
1610     - enable adjoint of Stevens OB
1611     - add dummy_in_dynamics to enable extraction of ADJrhoinsitu
1612       (a bit delicate because of potentially modified adj. common block structure;
1613       current switch is ALLOW_AUTODIFF_MONITOR_DIAG, could be changed later)
1614    
1615    checkpoint62s (2011/02/15)
1616    o pkg/seaice (seaice_growth v 1.112):
1617     - introduce SEAICEareaFormula run time parameter, which selects the recipe for
1618       computing the ice cover tendency from effective thickness tendencies. Include
1619       Ian Fenty's formula.
1620     - remove 'undef SEAICE_OCN_MELT_ACT_ON_AREA' which may now be achieved using
1621       SEAICEareaFormula.
1622     - simplify notations for the various d_HEFF/d_AREA terms.
1623    o pkg/gmredi:
1624     - add Boundary-Value-Problem bolus transport (Ferrari etal, OM 2010) code
1625       from Christopher Wolfe (UCSD); add partial cell factor in vertical derivative;
1626       add a verification test-run (front_relax.bvp) to test GM_useBVP.
1627    o pkg/seaice (seaice_growth v 1.111):
1628     - for SEAICE_DO_OPEN_WATER_GROWTH, replace Gael's implementation with Ian's.
1629     - the new SEAICE_DO_OPEN_WATER_MELT allows open-water air-sea heat fluxes to
1630       also melt ice.
1631    o pkg/seaice:
1632     - McPhee formula for Ice-Ocean fluxes (provided by Ian Fenty).
1633     - can be used by #define MCPHEE_OCEAN_ICE_HEAT_FLUX in SEAICE_OPTIONS.h
1634    o pkg/cheapaml:
1635     - from Nico Wienders: New version of this package.
1636    o pkg/flt:
1637     - add CPP options to prevent floats to re-enter the opposite side of
1638       a periodic domain (default: keep periodicity)
1639    o pkg/gmredi:
1640     - apply exchange to GM_PsiX,GM_PsiY to get valid values near CS-corners
1641       (needed for multi-dim advection).
1642     - switch on GM Advective form in global_ocean.cs32x15 and update output.txt
1643    o model/src:
1644     - fix wrong re-setting of addMass array (ALLOW_ADDFLUID) for atmospheric run.
1645    o tutorial_tracer_adjsens
1646     - extend to NLFS and replace maskC by hFacC
1647       (change reference output accordingly)
1648    
1649    checkpoint62r (2011/01/24)
1650    o testreport:
1651     - add option -deloutp (-do) to remove output file after successful run
1652     - add option -mfile (-mf) for MPI machile-file and for each test-exp,
1653       extract exact list of procs from this file ; adjust COMMAND by
1654       replacing TR_MFILE & TR_NPROC with local machile-file & Nb of MPI procs.
1655    o pkg/ecco: replace old ineffective way of penalizing deviations from
1656      first guess (of obcs) with code by Matt Mazloff
1657    o pkg/ctrl: add code that allows the use of ALLOW_OBCS?_CONTROL without
1658      exf/cal
1659      - ctrl_init: fix initialisation (computation of diffrec) for obcs-ctrl
1660        and handle case of obcs?period == 0
1661        Not affected by these changes: There is still an inconsistency in
1662        the computation of start/endrec for the obcs variables for ALLOW_CAL
1663        defined (see comment by Menemenlis, 7-Mar-2003)
1664      - make S/R ctrl_get_gen_rec return something meaningful even if
1665        ALLOW_CAL is not defined
1666      - ctrl_getobcs?: simplify code so that it does not need to use
1667                       S/R exf_swapfields
1668    o testreport:
1669       allow to test MPI with different number of processors for each experiment:
1670       create file "SIZE.h.mpi" in each build dir.
1671       Note: update of "-command" argument not yet implemented.
1672    o model/src, pkg/autodiff, pkg/ecco, pkg/seaice:
1673      alleviate the need for additional 3D tapes when using
1674      the non-inear free surface in the adjoint. This is done
1675      by adding an 'update' of hfacc etc. to their current
1676      value at the beginning of forward_step.F.
1677    o pkg/seaice
1678      seaice_lsr: move stress-divergence computations out of outer pseudo-
1679      timestepping loop
1680    o pkg/obcs/obcs_prescribe_read.F: move 'CALL OBCS_EXTERNAL_FIELDS_LOAD'
1681      up, so that the calls of the ctrl_* subroutines are really at the end
1682      of the routine.
1683    o pkg/gmredi:
1684      allow to specify a 2-D horizontal map and a 1-D vertical profil
1685      as scaling factor for Isopycnal diffusivity (Redi) and GM diffusivity.
1686    o pkg/seaice:
1687      move lsr iterations from seaice_dynsolver to seaice_lsr.
1688    o pkg/seaice:
1689      reduce memory footprint of seaice mutldim advection tapes,
1690      by using a 2D tape independent of the generic_advdiff ones,
1691      and setting GAD_AREA=1 etc. rather than GAD_AREA=101 etc.
1692    
1693    checkpoint62q (2010/12/29)
1694    o model/src:
1695      - check horizontal grid-spacing for unset or zero/negative values.
1696      - change AD test hs94.1x64x5 to be truly a 2-D set-up.
1697    o pkg/flt:
1698      - use (recent) mdsio S/R MDS_READVEC_LOC instead of local FLT_MDSREADVECTOR
1699      - precision of input and output files set according to readBinaryPrec
1700        and writeBinaryPrec (previously always 64.b), pickup remains at 64 bits.
1701      - initial float position from tiled file was not converted to index space
1702        (looks like a bug): fixed to make it similar to initial pos. global file.
1703    o global_ocean.cs32x15:
1704       change SIZE.h of AD set-up to get same tiling as with MPI.
1705       Update output_adm, output_adm.thsice (pass@14) & output_adm.seaice (fail@11)
1706    o model/src:
1707       add flag to control printing of domain fields (bathymetry, hFac ...) in
1708       ini_mask_etc (call to plot_fieds_xy*).
1709    o pkg/thsice:
1710       if useEXF, some forcing fields are not valid in overlap: fixed by computing
1711       over the interior only + apply EXCH at the end (like with SEAICE advection).
1712    o pkg/mdsio:
1713      - add 2 arguments to S/R MDS_PASS_R4/8toRL/S for overlap size of buffer
1714        to copy to/from, so that it can be used to replace MDS_PASS_WH_R8toRL/RS.
1715      - change barrier call for safe multi-threads access to 3-D shared buffer.
1716      - MDS_READ/WRITEVEC_LOC use buffers from MDSIO_BUFF_3D.h (instead of local ones)
1717      - replace call to MDS_PASS_WH_R4/8toRL with call to MDS_PASS_R4/8toRL and
1718        remove the 4 S/R MDS_PASS_WH_R4/8toRL/S.
1719    o pkg/flt:
1720      - add fourth-order Runge-Kutta integration
1721      - add basic exch2 support (only 1 facet supported so far!)
1722    o pkg/mdsio+rw:
1723      new S/R to read local (or tile independent) vector (read counterpart of
1724       mds_writevec_loc, and front-end write_glvec_rl/rs).
1725    o global_ocean.cs32x15: additional input_ad.seaice experiment
1726        that uses pkg/seaice rather than pkg/thsice.
1727        (using multidim advection for seaice)
1728    o towards more F95 syntax for array specification in namelist:
1729      - change "data.diagnostics" (data.ptracers was changed before checkpoint62p)
1730        of all verification experiments.
1731           e.g.:    line: fields(1,3)='ETAN    ','ETANSQ  ',
1732          was changed to: fields(1:2,3)='ETAN    ','ETANSQ  ',
1733      - finish adding "-DNML_EXTENDED_F77" to DEFINES list in pgf77 and g77 optfiles
1734    o global_ocean.cs32x15: additional input.seaice experiment
1735        that uses pkg/seaice rather than pkg/thsice.
1736    
1737    checkpoint62p (2010/12/17)
1738    o pkg/thsice: rename (ad tape index) iicekey as ticekey, and move it
1739        to THSICE_SIZE.h to avoid conflict with pkg/seaice.
1740    o pkg/seaice: add seaice_diffusion.f seaice_map_thsice.f to adjoint.
1741        allow for use of multim. advection in seaice adjoint.
1742    o pkg/seaice: add diagnostics for snow precipitation and sublimation flux
1743      - first attempt to close budgets by taking into account the freshwater
1744        flux implied by the sublimation of snow and ice. So far only the
1745        volume budget is closed, turn on with soon-to-be-retired-again CPP-Flag
1746        SEAICE_ADD_SUBLIMATION_TO_FWBUDGET
1747    o eesupp/src:
1748      new S/R with new option (NML_EXTENDED_F77) to change array specification
1749      from F95 standard to commonly accepted extended F77 form.
1750      This would allow to use F95 syntax in namelist (needed with gfortran 4.4.5)
1751      and to revert back to the original syntax (with -DNML_EXTENDED_F77)
1752      for less tolerant f77 compiler (e.g., pgf77, g77).
1753    o globalFiles:
1754      commented out in parameter file "data" since it's not safe with MPI
1755      (e.g., wrong on aces); keep it if useSingleCpuIO=T (but not doing much
1756      in this case); no longer commented out in restart test (tst_2+2).
1757    o add adTapeDir to specify a special directory where adjoint tapes are
1758      written/read (adread_adwrite.F). adTapeDir is specified in data/PARM05
1759      and cannot be used together with mdsioLocalDir.
1760    o nesting pkgs:
1761      - packages_init_variables : put call to OBCS_INIT_VARIABLES in last position
1762      - update Gianmaria's Nesting pkgs (from Contrib/nesting_sannino)
1763      - add parameter files + utils dir + output from short run on beagle.
1764    o pkg/seaice:
1765        fix seaice_growth.F store directives; update results of exp. lab_sea.ad
1766    o pkg/seaice: explicitly store tsurfloc in seaice_solve4temp.F to avoid
1767      unnecessary copying in adjoint code, requires new parameter NMAX_ITER
1768    
1769    checkpoint62o (2010/11/25)
1770    o pkg/exf:
1771      - change CPP option EXF_VERBOSE to run-time logical param exf_verbose.
1772    o pkg/seaice:
1773      - seaice_ocean_stress: split a loop for better vectorization of the
1774        adjoint code
1775      - seaice_growth.F: fix bug in conservation of freshwater connected to
1776        capping of heff, put contribution into d_HEFFbyNEG
1777      - replace irritating parameters SEAICE_latentWater/Ice and SEAICE_sensHeat
1778        by something more sensible (parameters that are what their name implies)
1779      - change some defaults, so that by default exf-parameters are used for
1780        things like rhoAir, cpAir,latent/sensible heat parameters, in order
1781        to reproduce the old results, many data.seaice now contain funny values
1782        for cpAir and latent heat of sublimation
1783    o packages_readparms.F: move exf_readparms up in line so that
1784        exf-parameters are visible for other packages (e.g. seaice)
1785    o debugMode & debugLevel=2:
1786      - differentiate between debugMode & debugLevel=2:
1787        debugMode: controls printing of debug messages (sequence of S/R calls).
1788        debugLevel: controls printing of algorithm intermediate results and stats.
1789      - remove "if debugLevel=2 => debugMode" but keep "debugMode =>  debugLevel=2";
1790        => allows to print debug-stats without all sequence of call messages.
1791      - switch control of debug print from debugLevel to debugMode in many S/R.
1792    o pkg/obcs (obcs-sponge):
1793        fix bug that was introduced on Oct 25 (in dynamics.F v1.151): put back the
1794        call to OBCS_PRESCRIBE_EXCHANGES (need to exch gU,gV when using obcs-sponge)
1795    o pkg/generic_advdiff:
1796      - record overlap minimum size for each advection scheme;
1797      - refine criteria on overlap minimum size;
1798      - check and stop (in gad_check) if overlap size is too small.
1799    o pkg/obcs:
1800      - with ptracers: remove multiple calls to obcs_apply_ptracer (only done
1801        once, in ptracers_implicit.F)
1802      - with seaice: remove test on empty file name in obcs_apply_seaice (always
1803        apply OB values when tile has OB)
1804    o model/src, coriolis setting:
1805      - integer parameter "selectCoriMap" (=0,1,2) replaces 3 logical
1806        useConstantF, useBetaPlaneF, useSphereF ; can now read coriolis from
1807        files (selectCoriMap=3) with any grid.
1808      - add parameter "fPrime" for constant second Coriolis coeff (default=0).
1809    o pkg/seaice/seaice_growth.F:
1810        a few cosmetic changes that reduce the number of lines of code
1811    o pkg/obcs: add boundary conditions following Stevens (1990)
1812      - the code follows old MOM/NAOSIM code
1813      - so far it is only implemented for the eastern and western boundaries
1814        and NOT for pTracers
1815    o pkg/rbcs:
1816      - replace rbcsInIter by rbcsForcingOffset, the time in seconds at the
1817        beginning of the first rbcs forcing period.
1818      - add option rbcsSingleTimeFiles that makes rbcs read forcing data like the
1819        offline package, i.e., one file per time, labeled by iteration number;
1820        deltaTrbcs sets the timestep with which the data was generated;
1821        rbcsIter0 is the forcing iteration corresponding to rbcsForcingOffset.
1822      - rbcsForcingCycle=0 makes forcing non-cyclic.
1823      - make arithmetic safe for negative times and odd forcing periods.
1824    
1825    checkpoint62n (2010/11/09)
1826    o pkg/seaice:
1827        fix masking in free-drift S/R ; update results of exp. lab_sea.fd
1828    o pkg/obcs:
1829       New S/R to copy tracer value from the OB location to narrow band region
1830        (width = same as overlap) beyond the OB: preserve OB value (needed for
1831        high-order scheme) which were overwritten by EXCH call if in overlap
1832        region. Applied to theta, salt, ptracer and advected seaice variables.
1833       With seaice: use maskInC in similar way as in gad_advection.F,
1834        in seaice_advection.F and advect.F.
1835       Update output of experiment seaice_obcs and change exp4 to test OBCS with
1836        4th order Adv.Scheme. for pasive salt and ptracer.
1837    o tools/genmake2:
1838      - when looking for an optfile (not specified), only search for Fortran compiler
1839        (remove sym-link test + setting of CPP + makedepend check + C-compiler check)
1840      - in get_fortran_c_namemangling: use "$CC $CFLAG" to compile C test programm
1841        (instead of "$MAKE genmake_test.o" since an existing Makefile can be wrong)
1842      - set default for CPP to "cpp -traditional -P" (was the case without specifying
1843        an optfile, but otherwise default was just "cpp".
1844      - comment out PLATFORM=$p_PLATFORM (no idea where p_PLATFORM comes from)
1845      - when "CC" is not set in the optfile, look for possible C compiler
1846        (instead of just setting CC=cc)
1847      - put back version v.169 modif (from 2008/02/15), was dropped in v.173 changes:
1848        => add a ".F" to ".o" rule for source files with no "#include" (such as
1849           port_rand.F); otherwise, default ignores FOPTIM and just uses FFLAGS.
1850      - move gfortran before g77 in list of possible Fortran compiler (consistent
1851        with reference compiler switch from g77 to gfortran)
1852    o pkg/seaice:
1853      o remove SEAICE_OLD_AND_BAD_DISCRETIZATION-code, add a test to
1854        seaice_check that stops the model, when the CPP flag is used.
1855      o seaice_growth.F: make capping of ice volume conserving by returning the
1856        capped ice as freshwater to EmPmR. This does not change the verification
1857        experiments but will change runs where the capping is acutally active
1858    o change reference platform+compiler from faulks+g77 to baudelaire+gfortran
1859      (except the 2 fizhi test exp.); update output of exp.: bottom_ctrl_5x5,
1860         global_ocean.cs32x15 (icedyn, thsice, AD thsice), global_ocean_ebm (AD),
1861         lab_sea (fd, hb87, salt_plume), MLAdjust (3/5) and vermix (dd)
1862    o tools/genmake2:
1863      - merge genmake_warnings & genmake_errors into 1 log file: "genmake.log")
1864      - change DUMPSTATE default to false (can use "-ds" option to switch it to T)
1865      - clean previous genmake log files before anything else.
1866      - change Makefile to remove testreport log files (*.tr_log) and genmake log
1867        files only with "CLEAN" target (instead of "Clean");
1868    o pkg/generic_advdiff:
1869      Change OBCS in multiDim advection (gad_advection.F):
1870       Use maskInC to prevent intermediate update of tracer-field in OB regions,
1871       thus keeping current-time-step OB values; and remove the call to OBCS_APPLY
1872       which were applying future time-step OB values.
1873      This way, all explicit calculations use current-time-step OB values
1874       (simpler and more consistent).
1875      Affects results when set-up uses time-varying OBC and multi-dim advection;
1876       update output of experiment seaice_obcs.
1877    o pkg/seaice:
1878      move OPTIONS (formerly locally defined) to SEAICE_OPTIONS.h:
1879       this includes SEAICE_GROWTH_LEGACY (+ SEAICE_DO_OPEN_WATER_GROWTH &
1880         SEAICE_OCN_MELT_ACT_ON_AREA ) and SEAICE_SOLVE4TEMP_LEGACY.
1881      Default (pkg/seaice/SEAICE_OPTIONS.h) is to define SEAICE_SOLVE4TEMP_LEGACY
1882       but leave SEAICE_GROWTH_LEGACY undef ; For now, keep verification exp
1883       unchanged (SEAICE_GROWTH_LEGACY defined in */code*/SEAICE_OPTIONS.h)
1884    o pkg aim (2010/10/26):
1885      - Introduce ALLOW_INSOLATION, moving toward a more general incoming solar radiation
1886        formulation with obliquity, eccentricity, ... as run-time parameters,
1887      - Introduce diagnostics for top-of-the-atmaophere incoming solar radiation and
1888        upward shortwave radition at the surface (all-sky and clear-sky).
1889    o pkg/obcs:
1890      - writing sections with globalFiles=T does not work: switch to tiled-files
1891        when writing sections for OBCS (change pkg/rw/write_rec.F accordingly).
1892      - fix index bug (OB_Ie -> OB_Iw_) in obcs_apply_uvice.F
1893      - apply OBCS_SEAICE_COMPUTE_UVICE to both uice and vice at all obcs
1894    
1895    checkpoint62m (2010/10/21)
1896    o pkg/seaice: vectorize seaice_solve4temp.F
1897      - move iterations loops outside of i/j-loops
1898      - requires 2D arrays for TB and effConduct
1899      - add 2D iceOrNot to replace HICE_ACTUAL.GT.0, as HICE_ACTUAL is
1900        modified in this routine
1901      - a little bit of clean up, adjusting indentation, etc.
1902      - replaced a few TEN**a by exp(a*log(10.)) in new code for better
1903        performance and '**TWO' by '**2' (because TWO is a float),
1904        replaced ONE, ZERO
1905    o eesupp/src:
1906       fix flow dir for exch1_z_RX_cube, exch1_uv_RX_cube & exch1_bg_RX_cube
1907    o pkg/seaice/seaice_growth.F
1908      Revision 1.89 of seaice_growth.F completes the overall october 2010 revision and
1909      merging process. The merged routine has two branches, and one activates the 'evolution'
1910      branch by setting SEAICE_GROWTH_LEGACY to undef (at the top of the routine for now).
1911      In summary, here is what the '10/10 revision' did consist of
1912        part 1: seaice_growth.F revisions 1.71 to 1.75
1913          - Preliminary seaice_growth.F clean-up, keeping test results strictly unchanged.
1914            The emphasis here was on improving readability (e.g. by trying to use meaningful
1915            variable names) and modularity (e.g. by adding arrays to store heff etc. updates).
1916        part 1.5:
1917          - revising the lab_sea experiment to make it a more useful (i.e. stable
1918            and representative of an actual model run). This was done by generating a
1919            (winter) pickup to start from, switching back the main experiment dynamic
1920            solver from evp to lsr, having one of the experiments use the free drift solution.
1921        part 2: seaice_growth.F revisions 1.76 to 1.85
1922          - Sorting out hard-coded constants that prevented heat and fresh water conservation.
1923          - Sorting out the various fields units and sign (set early on and reset at the end)
1924            to avoid numerous scalings/re-scalings. By v1.85 the basic unit for ice, heat and
1925            fresh water stock is 'effective ice meters', and >0 implies more ice/snow.
1926          - Using tendency terms arrays (d_HEFF* etc.) to alleviate remaining code locks,
1927            and simplifying logical expressions to further improve readibility.
1928        part 3: seaice_growth.F revisions 1.86 to 1.89
1929          - Re-organize the blocks of code more logically.
1930          - Merging the '_if.F' pieces that add something new.
1931    o pkg/thsice:
1932      - vectorize thsice_solve4temp and thsice_get_exf.
1933        Problem: thsice_solve4temp has an unvectorizable statement that
1934        might also be problematic for TAF
1935      - thsice_get_exf: add the ALLOW_BULK_LARGEYEAGER04 CPP-flag. This
1936        does not change the verifcation experiment, but will change all
1937        experiments that have this flag undefined (not tested in verification);
1938        a little reorganization to save a few 2D fields and recomputations
1939      - 1st step of revisiting thsice adjoint (major recomp. sorted out)
1940      - 2nd step:  fix some store dirs
1941        o seems to work somewhat, i.e. using ifort but not g77
1942        o likely cause are incomplete init. or recomputation
1943        o start verification/global_ocean.cs32x15/input_ad.thsice
1944    o pkg/obcs: add support for exch2
1945      - the position of the boundary and prescribed values are specified using
1946        a global domain with exch2 facets stacked
1947        - in x for N,S boundaries (like W2_mapIO=-1)
1948        - in y for E,W boundaries (so E,W boundaries do not overlap)
1949    o pkg/mdsio: add support for writing global sections with exch2
1950        file layout is as for obcs described above:
1951        - for x-z sections, facets are stacked in x (like W2_mapIO=-1)
1952        - for y-z sections, facets are stacked in y
1953    o pkg/thsice:
1954       - change a few routines for better vectorization: thsice_albedo.F,
1955         thsice_step_temp.F, and in thsice_calc_thickn.F. Results are
1956         not affected, but in particular the latter routine has changed
1957         dramatically (not necessarily easier to read now).
1958       - re-arrange calculation in THSICE_SOLVE4TEMP: move outside of i,j loops
1959       iteration loop and call to S/R THSICE_GET_BULKF & THSICE_GET_EXF.
1960    o verification/lab_sea:
1961      - overhaul of the forward model experiments. The main motivation
1962        for this revision is that lab_sea has proven quite fragile (when
1963        changing the sea-ice code, and switching platforms) to a point
1964        when failures were very hard to attribute to specific code problems.
1965      - the suspected reason for this fragility is noise amplification by evp so,
1966        to start with, we decided to replace evp with lsr in the main experiment.
1967      - the input.lsr experiment thus became obsolete and was removed.
1968      - it was replaced with the input.fd experiment that uses an
1969        analytical "free drift" solution as the ice velocity field.
1970      - Taken together, input (lsr), input.fd (free drift) and input.hb87 (evp)
1971        will hopefully allow us to discriminate problems due to dynamic solvers
1972        from problems due to the thermodynamic code. input.salt_plume (lsr) allows
1973        us to test additional options, along with the salt plume package.
1974      - Finally a pickup was generated (at the end of a one year run) to
1975        make the tests more representative of an actual model run. Previously
1976        the tests starting point was a 1m thickness of ice everywhere.
1977    o pkg/seaice:
1978      - introducing S\R seaice_freedrift.F that compute the
1979        analytical solution to an approximate ice momentum
1980        equation (i.e. the simple stress/coriolis balance).
1981      - define SEAICE_ALLOW_FREEDRIFT to trigger the computation
1982        of the free drift velocity field, and enable its use.
1983        To actually use the free drift solution as the model ice
1984        velocity field set SEAICEuseFREEDRIFT to .TRUE. in data.seaice.
1985    o move "useOASIS" from PARAMS.h to EEPARAMS.h and read it from "eedata"
1986    
1987    checkpoint62l (2010/10/04)
1988    o pkg/seaice:
1989      -fix the USE_ORIGINAL_SBI version (for variable freezing point);
1990      -use "celsius2K" in SEAICE_VARIABLE_FREEZING_POINT and in new
1991       version (with USE_ORIGINAL_SBI undef);
1992    o add hooks for new packages OASIS, the package will follow
1993      (hooks exclude the seaice pkg for now)
1994    o pkg/autodiff: ALLOW_AUTODIFF_WHTAPEIO
1995      Option to use mdsio_read_whalos.F/mdsio_write_whalos.F,
1996      rather than mdsio_readvector.F/mdsio_writevector.F, within
1997      adread_adwrite.F to read/write adjoint-related tapes to disk.
1998    o eesupp and pkg/mdsio: ALLOW_WHIO
1999      Option to write/read 2D fields to files including tiles halos.
2000      The main purpose is for adjoint related "tape I/O".
2001      The secondary purpose is for debugging phases.
2002      A word on those rather specifically intended purposes.
2003      The code was meant to be stripped down to the bare minimum.
2004      Typically, there is a unique and basic mapping to the global
2005      buffer (tile by tile, then proc by proc, then level by level), and
2006      byteswaps and meta-files are omitted. Indeed the (*_WH*) code is not
2007      meant to generate user friendly outputs of various shapes and forms.
2008      Rather it is intended, for the knowledgeabale developers,
2009      to be largely independent of the many mdsio options, to allow
2010      outputs of tiles+halos in debugging phases and in adjoint runs,
2011      and to allow some flexibility in tuning (adoint) I/O depending on each
2012      file system behavior. With regard to tuning, most of the potential knobs
2013      (to leave files open, to allocate the I/O indep. of usesinglecpuio,
2014      to specify directories, to specify the typical size of I/O calls, etc.)
2015      are not yet included, and will be added if they prove useful.
2016    o pkg/seaice:
2017       fix uninitialised arrays in USE_ORIGINAL_SBI version of seaice_solve4temp.F
2018    o pkg/seaice:
2019       new S/R seaice_solve4temp.F: this is the merged version of Ian Fenty
2020       code (seaice_budget_ice_if.F) which enable to recover old standard
2021       code (seaice_budget_ice.F) when option USE_ORIGINAL_SBI is defined.
2022       temporary: add "#define USE_ORIGINAL_SBI" at the top of seaice_solve4temp.F.
2023    o model/src (rStar):
2024       use simple average (not area weighted) of rStarFac at U,V point when using
2025       vectorInvariant and selectKEscheme=1,3 (consistent with mom. vertical advection)
2026       update output of exp. fizhi-cs-32x32x40 and fizhi-cs-aqualev20.
2027    
2028    checkpoint62k (2010/09/17)
2029    o adjoint
2030       * changed verification/global_ocean.cs32x15 ; adjoint now tests
2031         Adams-Bashforth 3 + NLFS + RSTAR
2032       * some more modifs required for ECCO-GODAE v4
2033    o pkg/seaice
2034       add SEAICE_AGE_VOL option to use volume instead of area for
2035       integrating SEAICE_AGE
2036  o model/src:  o model/src:
2037     first check-in of sigma & hybrid-sigma coordinate code ; also includes     first check-in of sigma & hybrid-sigma coordinate code ; also includes
2038     non-linear free-surface parts ; but pressure-gradient not yet coded.     non-linear free-surface parts ; but pressure-gradient not yet coded.
# Line 273  o tools/build_options: Line 2302  o tools/build_options:
2302      but keep the former optfile for few weeks for smooth transition      but keep the former optfile for few weeks for smooth transition
2303  o pkg/ecco  o pkg/ecco
2304    - allow user defined cost function contributions    - allow user defined cost function contributions
2305          CPP: ALLOW_USERCOST_CONTRIBUTION       CPP: ALLOW_USERCOST_CONTRIBUTION
2306          USAGE: compute contributions in cost_usercost_all.F       USAGE: compute contributions in cost_usercost_all.F
2307    - note: this is identical to what ALLOW_GENCOST_CONTRIBUTION once was.    - note: this is identical to what ALLOW_GENCOST_CONTRIBUTION once was.
2308        the two options are complementary.        the two options are complementary.
2309  o pkg/smooth  o pkg/smooth

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