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revision 1.1258 by mlosch, Wed Apr 28 08:37:41 2010 UTC revision 1.1689 by jmc, Fri Jul 13 23:25:59 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 model/src:
8      - fix saltIsActiveTr setting for IdealGas eosType (eosType is 6 character long);
9      - to refine CS-grid check, add logical flag "hasWetCSCorners": true if using
10        Cubed-Sphere Exch with CS-corners inside the domain;
11        make new S/R INI_GLOBAL_DOMAIN from code in ini_linear_phisurf.F to calculate
12        globalArea and to set hasWetCSCorners.
13      - add warning if usingCurvilinearGrid and momAdvection in flux-form (missing
14        metric terms); stop if hasWetCSCorners=T and momAdvection in flux-form.
15      - re-activate the stop if useCDscheme and hasWetCSCorners=T (previously if
16        useCDscheme and useCubedSphereExchange).
17    o pkg/seaice/seaice_growth.F :
18      - compute the SEAICE_DISABLE_HEATCONSFIX term accordingly
19        for the (.NOT.useRealFreshWaterFlux).OR.(nonlinFreeSurf.EQ.0)
20        when the previous code was not correct.
21      - in all cases diagnoze the boundary condition mismatch to SIaaflux
22      - in the case of useRealFreshWaterFlux.AND.(nonlinFreeSurf.GT.0) add
23        that term to QNET (essentially to set the melt/freeze water to 0degC).
24        when SEAICEheatConsFix is true, so that the ocean+ice budget heat is closed.
25    o verification/global_ocean.cs32x15/input.seaice :
26      - add SEAICEheatConsFix in data.seaice, ensuring closed ocean+ice heat budget.
27      - add diagnostics (commented out) for budget test using my matlab codes (gcmfaces).
28      - update results (output.seaice.txt) accordingly.
29    o verification/lab_sea/input/data.seaice :
30      - remove SEAICEheatConsFix, which is now be tested
31        in global_ocean.cs32x15. The presently coded fix
32        is only consistent with real fresh water + nlfs.
33      - update results (output.txt) accordingly.
34    o pkg/salt_plume: added diagnotic for salt tendency (oceSPtnd).
35    o AD_CONFIG.h file:
36      - in genmake2: remove "#undef ALLOW_ECCO_OPTIMIZATION" from AD_CONFIG.h;
37      - remove #include "AD_CONFIG.h" from all included OPTIONS files and
38        add it explicitly in each fortran src file where it is needed.
39        motivation: header file AD_CONFIG.h is generated/modified after "make depend"
40        thus introducing potentially wrong dependency; therefore, better to include
41        it only where it's really needed, and after any other included OPTIONS file
42        (less tempting to bring conditional includes according to ALLOW_ADJOINT_RUN
43        or ALLOW_TANGENTLINEAR_RUN).
44    
45    checkpoint63p (2012/07/06)
46    o pkg/autodiff:
47      - rename S/R INI_AUTODIFF to AUTODIFF_INIT_VARIA ;
48      - create new header file "AUTODIFF_PARAMS.h" for pkg/autodiff parameters
49        which are now read from new parameter file "data.autodiff" (inAdExact
50        previously in "data", use{KPP/GMRedi/SEAICE}inAdMode previously in data.pkg)
51      - add file "data.autodiff" in all verification/*/input_ad/ directories.
52      - add run-time parameter to turn On/Off SEAICEuseFREEDRIFT in adjoint/forward
53        mode (used in global_ocean.cs32x15.seaice_dynmix test exp.)
54    o verification/tutorial_tracer_adjsens/
55      - add extra sub-verification which uses "SOM" advection scheme
56        (2nd Order-Moment Advection Scheme, Prather Limiter) with
57          #define GAD_ALLOW_TS_SOM_ADV in GAD_OPTIONS.h
58        and in data:
59          multiDimAdvection=.TRUE.,
60          tempAdvScheme=81,
61          saltAdvScheme=81,
62    o model/src:
63      - introduce ALLOW_BALANCE_RELAX which allow the removal
64       of the global mean of relaxation terms by setting
65       balanceThetaClimRelax and balanceSaltClimRelax
66      - disable balanceEmPmR and balanceQnet in the case when useSeaice.
67       This case is now treated appropriately in seaice_growth.F
68    o pkg/seaice:
69      - do balanceEmPmR and balanceQnet based on the net fluxes
70        (SItflux) that enter the ocean+ice system rather than QNET
71        and EMPMR. Works best in real fresh water.
72      - SIatmFW, SIatmQnet, and SItflux computations had to be moved
73        out of the diagnotics bloc, and stored in global arrays.
74    
75    checkpoint63o (2012/06/29)
76    o vertical mixing schemes:
77      - remove unused S/R CALC_BUOYANCY (left from branch-atmos merging)
78      - replace computation of density (in Function STATE1, opps_calc.F) by a call
79        to S/R FIND_RHO_SCALAR
80      - pass sigmaR to S/R PP81_CALC, MY82_CALC (but not yet used) and to GGL90_CALC
81        and use it for N^2 calculation in ggl90_calc.F (save 2 density computations);
82        affects output (vermix.ggl90) at truncation level.
83    o testreport:
84      - change adjustment of SIZE.h for mpi+mth testing: preserve enough tiles
85        (nSx,nSy) for the number of threads (from eedata.mth)
86    o model/src:
87      - remove 2nd set of calls at the top of initialise_varia.F (Adjoint part)
88        related to Non_Lin Free-Surf or Bottom-Control (but not longer necessary).
89    o verification/tutorial_tracer_adjsens/
90      - compile with ALLOW_CG2D_NSA
91      - run with nonlinFreeSurf=3
92      - update reference output_adm.txt
93    o tools/genmake2:
94      - add "-DHAVE_NETCDF" to the DEFINES list when NetCDF is available ;
95        refine usePROFILES switching off (only when NetCDF is not available).
96    o verification (atmospheric set-up):
97      - change eosType='IDEALGAS' to eosType='IDEALG' to match variable declaration
98    o pkg/profiles : refine profiles and files handling.
99    o model/src and pkg/ecco : introduce run-time switch usePROFILES.
100    o model/src/the_main_loop.F, forward_step.F and pkg/exf/EXF_OPTIONS.h :
101      - changes to use model/src/the_main_loop.F rather than the ecco version
102        in ecco type adjoint runs.
103    o model/src:
104      - move computation of recip of grid distance & area from INI_MASKS_ETC to INI_GRID
105      - move setting of h0Fac[C,W,S] from INI_LINEAR_PHISURF to INI_MASKS_ETC
106      - update_masks_etc.F: rename SMOOTH*_R4,R8 function to the corresponding type (RS,RL)
107    o model/src:
108      - fix S/R UPDATE_CG2D for ALLOW_DEPTH_CONTROL case (was empty before);
109        update output of test experiment bottom_ctrl_5x5.
110    o pkg/generic_advdiff:
111      - implement vertical bi-harmonic diffusion (for now, only for T & S and
112        only explicitly).
113    o verification/bottom_ctrl_5x5/
114      update reference output (results changed quite some time ago,
115      not sure when; but new reference results look ok in terms of grdchk)
116    o verification/1D_ocean_ice_column/
117      For verification purposes, the exact adjoint rather than an approx.
118      should be used (e.g., to comare against F.D. or TLM).
119      removed autodiff_inadmode*_ad.F routines in code_ad/
120      Update results/ accordingly.
121    o pkg/cal:
122      - change cal_getdate.F so that output date is function of input time only
123        (less ambiguous, not mixed up with input iteration number).
124      - fix calendarDumps for non-zero phase-lag (S/R CAL_TIME2DUMP).
125    o pkg/diagnostics:
126      - implement calendarDumps also for stats-diags
127      - implement calendarDumps also for snap-shot output (negative freq)
128      - for now, ignores calendarDumps if non-zero phase-lag.
129    
130    checkpoint63n (2012/06/04)
131    o model/src:
132      - recompute rSurfW & S to ensure consistent column thickness (needed for rStar)
133        between Sum_k(hFac*drF) and rSurf-rLow, for now only when using pkg/shelfice;
134      - use h0FacC, W & S to compute hFac_surfC, W & S in calc_surf_dr.F (more
135        similar to calc_r_star.F); update results of experiment internal_wave and
136        tutorial_global_oce_in_p (affected @ truncation level).
137    o pkg/shelfice:
138      - add parameterisation of advective-diffusive flux into the ice shelf
139        according to Holland and Jenkins (1999), eq.22-33, as suggested by Jan De Ryd
140      - simply eps3/3a computation
141    o eesupp:
142     - add new CPP option (DISCONNECTED_TILES) to disconnect tiles (no exchange
143       between tiles, just fill-in edges assuming locally periodic subdomain) and
144       add corresponding exchange subroutines (EXCH0);
145     - new CG-solver version (_EX0) for disconnected-tiles special case.
146    o model/src (CG-solvers):
147     - modify Single-Reduction version (CG2D_SR) in case cg2dMaxIters is reached
148       (similar final residual output and max-Iter number as with standard version);
149     - allows to store and use lowest-residual solution (standard & _SR versions);
150     - cleaning up (remove old, commented out code, LETS_MAKE_JAM ...).
151     - by default, also compile CG2D_SR version (define ALLOW_SRCG in CPP_OPTIONS.h)
152    o eesup/src:
153     - global_vec_sum.F cleaning: add a BARRIER ; update comments ; remove ndef
154       ALWAYS_USE_MPI (no longer needed after fixing usingMPI settings - March 2012)
155    o pkg/salt_plume added to lab_sea/input_ad.noseaicedyn
156    
157    checkpoint63m (2012/04/27)
158    o pkg/shelfice:
159     - account for partical cells in surface level below ice-shelf for hydrostatic
160       pressure calculion (set uniformFreeSurfLev to F); update isomip experiments.
161    o ad test experiments:
162     - update and rename to "ad_optfile.local" local AD-optfile specific to a
163       particular adjoint verification experiment (in verification/*/code_ad/)
164    o pkg/seaice & pkg/exf:
165     - Part two of ECCO-CLIVAR code merges.
166       Completes merge of seaice area relax. code.
167       Requires unified CPP option EXF_ALLOW_SEAICE_RELAX
168       to be set in EXF_OPTIONS.h since this pkg controls its I/O
169       (and avoids second CPP option in SEAICE_OPTIONS.h)
170     - change default value of costIceStart & costIceEnd to a valid date.
171     - add snowPrecip to HSNOW in seaice_growth
172    o pkg/ptracers:
173     - move ptracers summary and setup check into separated S/R ; add a check for
174       valid PTRACERS_Iter0 value (error+stop or just warning).
175    o pkg/cal (+ pkg/ecco):
176     - avoid calling a S/R with 2 times the same arg (FWD: unless both are only used
177       as input; and for AD, unless both are not differentiable (e.g., k index)).
178    o model/src:
179     - define internal flag "uniformFreeSurfLev" (=T when free-surface level-index
180       is everywhere k=1) to speed-up some calculations (by pass kSurf reference);
181       temporary set to usingZCoords value (to be changed to F when using shelfice).
182     - hydrostatic pressure: implement partial cell near the surface also for
183       Z-coordinates (for the case where uniformFreeSurfLev=F); replace test on
184       usingZCoords with test on uniformFreeSurfLev where needed (in NonHyd code).
185    o pkg/ctrl/ctrl_init.F:
186     - add a formal parameter to s/r ctrl_init_rec to print
187       xx_$(ctrl_valiable)_file for easier debugging
188     - move call of cal_* routines into the if-block where they are really
189       needed so that xx_$(ctrl_variable)_period can be 0 or -12 without having
190       to specify a startdate
191    o pkg/seaice:
192     - update comments in SEAICE_OPTIONS.h (+ similar update of lab_sea/code and
193       global_ocean.cs32x15/code versions).
194     - turn on seaice Multi-category (in data.seaice, SEAICE_multDim=7) for
195       verification experiment global_ocean.cs32x15.seaice and update results.
196    o pkg/exf:
197     - new S/R EXF_GETFIELD_START to return starting-time of a forcing field
198       (according to useExfYearlyFields).
199    o pkg/cal:
200     - move calendar setting & summary (previously in cal_readparams.F) into new
201       S/R CAL_INIT_FIXED to be called later in the initialisation process, once
202       length of the simulation is set (after SET_PARMS call); This is an attempt
203       to fix Pb when, e.g.: pkg/longstep, modifies the length of the run.
204     - For safety: keep a record of pkg/cal parameter settings status
205               to allow to STOP if one pkg/cal S/R is called too early.
206     - add a stop in all basic pkg/cal subroutines if called before setting is done.
207     - modify cal_getdate.F: stop when nothing was returned;
208       if called with myIter=-1, simply retrun modelBaseDate (1,2 = startDate_1,_2);
209       this allows to remove "cal.h" from seaice_read_parms.F & init_mnc_vars.F.
210    
211    checkpoint63l (2012/04/04)
212    o pkg/bbl:
213      - fix call to FIND_RHO_2D in bbl_calc_rho.F (case multi-tiles per proc);
214        update global_with_exf output.yearly.txt file.
215    o pkg/cal:
216      - start to clean-up cal_set.F ; fix for the case where baseTime is non-zero.
217      - remove 2 unsused and very short (1 line only) functions ;
218      - remove unsused subroutines from AD-Diff list.
219    o model/src:
220      - start to implement clean wait to stop in initialization S/R (config_check.F,
221         packages_check.F, ini_parms.F and pkg/obcs/obcs_check.F + pkg/mypackage)
222    o folowing PRINT_MESSAGE changes:
223      - remove reminder multiple print to the same file (STDOUT) when multi-threads.
224    o pkg/bbl:
225      - modification so it can work with z*
226      - replace deltaT with dTtracerLev(k) for asynchronous time stepping
227      - global_with_exf/input.yearly verification; changes output.yearly.txt
228    o eesupp/src:
229      - PRINT_MESSAGE: use OpenMP critical instruction (similar to PRINT_ERROR);
230        writing to unit 0 (if unit=errorMessageUnit) extended to the case myThid=1
231      - CHECK_THREADS: specific code if using OpenMP threading: improve checking of
232        # of threads across processors (e.g., different env OMP_NUM_THREADS setting)
233      - improve special preliminary call to EESET_PARMS (if eedata is read 2 times).
234      - when using MPI, always set usingMPI=T ; set default accordingly and stop
235        if not consistent.
236      - ALL_PROC_DIE: add a BARRIER after MPI_FINALIZE call ; skip this when thread
237        argument is zero (in case called within single-thread section).
238    o pkg/fizhi:
239        clean-up turbulence cold-start switch: decided in fizhi_init_vars.F, stored
240        in common bloc (fizhi_coms.h) and then passed as argument up to S/R TURBIO.
241    o pkg/exch2:
242      - add argument "updateCorners" to S/R exch2_get_uv_bounds (enable to
243        activate EXCH_IGNORE_CORNERS in vector EXCH S/R).
244      - switch 1rst EXCH call to IGNORE_CORNERS (instead of UPDATE_CORNERS)
245        but keep the 2nd with UPDATE_CORNERS: this prevents overwriting good data
246        with bad ones coming from a not-yet-updated halo.
247        This should fix the problem when sNx <> sNy and GCD(sNx,sNy) < 2*Olx.
248    o pkg/frazil:
249        move FrzForcT diag from frazil_diagnostics_state.F to frazil_calc_rhs.F
250        http://mitgcm.org/pipermail/mitgcm-devel/2012-March/005384.html
251    o model/src/config_check.F: add a check for OLx>sNx/OLy>sNy
252    o verification/lab_sea
253      * #undef SEAICE_EXCLUDE_FOR_EXACT_AD_TESTING
254      * #define ALLOW_SST_CONTROL & ALLOW_SST_CONTROL
255      * nTimeSteps 3 -> 4
256      * changed reference output accordingly
257    o pkg/ctrl:
258      * fix ctrl_get_gen for xx_sst, xx_sss
259    o pkg/fizhi:
260      - fix 2 calls to S/R GRD2MSC (argument igrd) in update_earth_exports.F
261        update results of exp. fizhi-cs-32x32x40 (fail with only 6 digits for cg2d)
262      - by default, use new version of S/R GETPWHERE (#define TRY_NEW_GETPWHERE);
263        fix few out-of-bounds indices in referencing vars (initialise igrd to 1);
264        clean-up fizhi_turb.F (remove unused & uninitialised qdiaglsm array).
265    o pkg/gmredi:
266      - add diagnostic of Redi (main diagnonal) vertical diffusive flux of Temp
267    o pkg/fizhi:
268      - fix few initialisation and multi-tile Pb: aqualev & gridalt now pass the
269        (old)aces open64 tuv test.
270    o pkg/icefront: fix bug and reorder loop in icefront_init_varia.F
271    o pkg/mom_vecinv:
272      - fix 1 loop range in mom_vecinv.F to be like all the other loops which
273        set/update gu,gv/Diss (fix Pb of uninitialised fVerUkp in admom_vecinv
274        with non-lin free-surf).
275    o model/src: move k-loop outside of i/j-loops when (re-)computing R_low
276      in ini/update_masks_etc.F in order to avoid -O3 optimization problems with
277      some compilers (gfortran 4.6.0 on MacOS)
278    o momentum:
279      - separate fVer?(:,:,kUp) & fVer?(:,:,kDown) in argument list of MOM_FLUXFORM
280        & MOM_VECINV subroutines (to help TAF). This fixes Pb of uninitialised
281        fVer?(kUp) in admom_fluxform with non-lin free-surf or bottom control.
282    
283    checkpoint63k (2012/03/17)
284    o model/src:
285       - selectAddFluid (ALLOW_ADDFLUID): add missing term in horizontal momentum
286         flux-form (mom_fluxform.F) and vertical momentum (calc_gw.F) equations.
287       - SOLVE_DIAGONAL: switch default to use adjoinable & vectorized version
288         (#undef SOLVE_DIAGONAL_LOWMEMORY); update output of exp. front_relax.bvp.
289    o model/src: solve_*diagonal.F
290       - replace division with multiplication by inverse (similar to original version)
291         update output of AD exp. global_ocean.90x40x15.
292       - fix pkg/gmredi/gmredi_calc_psi_bvp.F & pkg/ggl90/ggl90_calc.F
293         to enable the use of the vectorized & differentiable solve_tridiagonal.F
294       - test exp. global_ocean.90x40x15/input_ad: switch to advection scheme 20 for
295         vertical advection (to get solve_tridiagonal tested in AD mode).
296    o pkg/seaice: ECCO-CLIVAR merge:
297      1. seaice AREA relaxation
298         * CPP option: SEAICE_ALLOW_AREA_RELAXATION
299         * runtime flag: SEAICE_tauAreaObsRelax
300      2. modified global mean cost imbalance code: CPP option
301          ALLOW_SSH_GLOBMEAN_COST_CONTRIBUTION
302    o another iteration on solve_*diagonal.F
303       Make choices independent of AUTODIFF
304       Default will be the adjoinable vectorized version.
305       Alternative choices are:
306       * non-adjoinable original version with low memory footprint:
307         #define SOLVE_DIAGONAL_LOWMEMORY
308       * still adjoinable but does not vectorize (k as inner-most loop):
309         #define SOLVE_DIAGONAL_KINNER (keeping SOLVE_DIAGONAL_LOWMEMORY undef)
310    o testreport
311     - add option to use a home made wrapper around "make"
312     - remove MITGCM_IEEE env. variable (no longer active)
313    o pkg/shelfice
314     - improve computation of friction velocity for velocity dependent
315       exchange coefficients: include velocities into SHELFICEBoundaryLayer
316       block to average velocities vertically
317     - add TAF store directives for SHI_ALLOW_GAMMAFRICT
318    o Modify diagonal solvers, now three versions (upon request):
319      #ifndef SOLVE_DIAGONAL_AUTODIFF
320        1. default version (dating back a while ago)
321      #else /* def SOLVE_DIAGONAL_AUTODIFF */
322      # ifdef SOLVE_DIAGONAL_KINNER
323        2. adjoinable version with k-innermost loop (G. Forget)
324      # else
325        3. adjoinable vectorized version of 2.
326      # endif
327      #endif /* SOLVE_DIAGONAL_AUTODIFF */
328      All flags are currently set within routines, but could/should be moved to CPP-options.
329      Array bounds for 1. are as before, for 2.,3. cover the entire domain
330      (could be changed for 1. too).
331    o verification/lab_sea (fwd):
332      - update the 4 fwd lab_sea test experiment: no longer SEAICE_GROWTH_LEGACY,
333        use 7 categories (except hb87), new solve4temp params (except salt_plume),
334        constant salinity (=4) or variable salinity (salt_plume) done through
335        SItracer.
336    o pkg/seaice:
337      - rename parameters: SIsalFrac to SEAICE_saltFrac & SIsal0 to SEAICE_salt0;
338      - remove old parameters ( SEAICE_freeze, SEAICEturbFluxFormula, SEAICE_gamma_t,
339         SEAICE_gamma_t_frz, SEAICE_availHeatTaper & SEAICE_availHeatFracFrz)
340        from SEAICE_PARMS.h ; still need to fix seaice_cost_sst.F (broken when
341        SEAICE_freeze got retired) but already better than previously with
342        SEAICE_freeze=123456.7 deg.C;
343      - move setting of facOpenGrow/Melt from SEAICE_INIT_FIXED to SEAICE_READPARMS
344        (safer multi-threaded setting); always set SEAICEuseEVP;
345      - setting of ocean-ice turb. flux coeff: moved from SEAICE_CHECK to
346        SEAICE_READPARMS & SEAICE_INIT_FIXED (this fixes wrong summary report);
347        stop if multiple specifications for the same coeff; make sure default
348        SEAICE_mcPheePiston is compatible with drF(1) & deltaT.
349    o pkg/obcs:
350      - allow to switch to upwind 1rst order advection scheme for the advective
351        flux computation at the open-boundary; disabled for adjoint built.
352    o pkg/ptracers:
353      - rename PTRACERS_RESTART.h -> PTRACERS_START.h
354      - rename ptracers_fields_blocking_exchanges.F -> ptracers_fields_blocking_exch.F
355      - add parameter to decide when to start a tracer; use internal flag to
356        know which tracer to step-forward; switch this internal flag at the top
357        of forward_step.F (new S/R PTRACERS_SWITCH_ONOFF); for now, not enabled
358        for adjoint built.
359    o pkg/seaice:
360      - add SEAICE_SIZE.h anywhere in the code where SEAICE.h is included ;
361      - move MULTDIM declaration and setting from SEAICE.h to SEAICE_SIZE.h ;
362      - keep experiment offline_exf_seaice truly single category (set MULTDIM=1).
363    o pkg/ecco:
364      - fix writing of output file DiagnosCost_ClimSalt/Theta
365        and DiagnosCost_DriftSalt/Theta (if multi-tiles per proc).
366    o pkg/seaice:
367      - add missing initialisation of COR_ICE array in dynsolver.F
368      - merging SEAICE_MULTICATEGORY define and undef cases. Now the same code is
369        compiled either way, and is tested in all exps (multidim was only tested
370        in lab_sea ad before).
371      - cosmetic change to prepare for future addition of ITD. no change to results.
372        no defaults change.
373      - added run time param SEAICE_multDim (7 for SEAICE_MULTICATEGORY, 1 otherwise).
374      - by lack of adequate verification experiments, I further used custom versions
375        of global_ocean.cs32x15 to test multicat or not, with pickup or not. All
376        should be correct.
377      - avoid recomputations in ad.
378    o array initialisation in adjoint mode:
379      1) pkg/mom_common/mom_calc_ke.F:
380        add full array initialisation of KE inside mom_calc_ke.F (ALLOW_AUTODIFF_TAMC):
381        The S/R which calls MOM_CALC_KE initialises KE but in some recomputation
382        part this initialisation is gone, resulting in Floating Point Exception
383        (caught by open64 compiler with debug option).
384      2) model/src/convective_weights.F
385        set output convectCount over the full array range (instead of doing
386        an update): this fix a similar issue when called within recomputation (adjoint)
387        which could by-pass the initialisation (normally done in the caller S/R).
388    o pkg/seaice:
389      - final version of turbulent flux params, as agreed at MIT ice meet:
390           SEAICE_mcPheePiston (default is ~ 0.000875)
391           SEAICE_mcPheeTaper (default is 0.)
392           SEAICE_frazilFrac (defualt is 1.)
393           SEAICE_mcPheeStepFunc (default is false)
394      - changes results at trunction error level
395      - ifdef SEAICE_EXTERNAL_FLUXES, disallow SEAICE_waterAlbedo
396    o added pkg/frazil:
397      - see frazil_description.tex for details
398      - verification experiment is global_with_exf/input.yearly; changes output.yearly.txt
399    o pkg/shelfice/shelfice_thermodynamics.F
400      - fix exponents for velocity dependent exchange coefficients: change
401        from 2/3(=0) to 0.66666666666666667
402      - move computation of velocity dependent exchange coefficients into
403        separate loop, so that it applies to both thermodynamics
404      - move some divisions by constants out of loops
405    
406    checkpoint63j (2012/02/16)
407    o pkg/seaice:
408      - overhaul of seaice_summary.F after feb 2012 clean-up of seaice_growth.F etc.
409      - SItracer:  added run time params, and allow coupling to ocn salinity.
410    o pkg/seaice: remove (almost) all divisions by constants within loops
411      in seaice_growth.F and seaice_solve4temp.F, this changes (only) the cg2d
412      results of global_ocean.cs32x15.seaice from 16 to 11 digits (but only
413      those, caused by 1/QI -> recip_QI) -> update output.seaice.txt,
414      output_adm.seaice_dynmix.txt and also lab_sea: output_adm.evp.txt
415    o pkg/seaice :
416      - simplify McPhee tapering, and allow to use it with SEAICEturbFluxFormula
417        = 1 or 2, using newly added run time parameter SEAICE_availHeatTaper.
418      - fix d_AREAbyATM, d_AREAbyOCN, d_AREAbyICE diags I broke in r1.148.
419      - add permanent SItflux diag that corresponds to TFLUX but includes
420        ice+snow. Hence SItflux-TFLUX should match the ice+snow heat budget.
421      - allow activation/testing of a fix for suspected missing term in
422        ocn-ice heat budget (to be confirmed). To test this, you want to
423        undef SEAICE_DISABLE_HEATCONSFIX, and then set the run time param
424        SEAICEheatConsFix to .TRUE. that also allows the 'SIaaflux' diagnostic.
425      - no change in results, fwd or ad.
426    o global_ocean.cs32x15/results: 3 changes following from the pkg/seaice commit below:
427      - switch to variable freezing point.
428           Results change : cg2d -> 1 digits; ad -> 3-6-6 digits.
429      - bug fix : the sublimation term that was missing is now activated.
430           Results change : cg2d -> 2 digits; ad -> 8-6-6 digits.
431      - bug fix : flooding sign term for SIsal0.NE.0.
432           Result change : cg2d -> 8 digits; ad -> 11-12-9 digits.
433    o pkg/seaice:
434      - unified freezing point treatment : the old SEAICE_VARIABLE_FREEZING_POINT
435        is now the default, and the old default constant freezing point is recovered
436        with SEAICE_tempFrz0    = -1.96,
437             SEAICE_dTempFrz_dS = 0.,
438      - retire SEAICE_freeze (= the old way of specifycing the constant freezing point)
439      - remove ALLOW_SEAICE_FLOODING brackets; run time switch is already there.
440      - bug fix (thanks to M. Losch) : the sublimation term that was missing is now
441        activated. To reproduce old results with this bug define SEAICE_DISABLE_SUBLIM.
442      - bug fix (silly me) : flooding sign term (seaice_growth.F r 1.149line 1211)
443        was wrong for SIsal0.NE.0. Changes cs32x15 results (see above item for detail).
444      - bug fix (thanks to O. Jahn) : area loss for melting  got messed up in
445        seaice_growth r149 for legacy branch (no results change).
446      - introduce SEAICE_CAP_SUBLIM : caps sublimation heat flux in solve4temp (code
447        from I. Fenty).
448      - results did not change except for global_ocean.cs32x15, mostly due to the
449        switch to variable freezing point (see above item for detail).
450    o pkg/thsice:
451      - fix and simplify interface to salt_plume pkg ; diagnose directly amount of
452        seawater freezing in thsice_calc_thickn (not used).
453    o pkg/seaice: turbulent flux term specification via run time params.
454      - replace CPP switches with run time switches to facilitate testing
455      - retired CPPs : MCPHEE_OCEAN_ICE_HEAT_FLUX,
456                       GRADIENT_MIXED_LAYER_TURBULENCE_FACTOR
457      - added runtime parameter : SEAICEturbFluxFormula
458      - move Mcphee constants to SEAICE_PARAMS.h
459      - seaice_readparms.F : read turbulent flux term params (SEAICEturbFluxFormula;
460                 SEAICE_availHeatFrac/Frz, or SEAICE_gamma_t/_frz if apply);
461                 remove seaice_summary call (moved to seaice_init_fixed)
462      - seaice_init_fixed.F : set SEAICE_availHeatFrac/Frz depending on
463        SEAICEturbFluxFormula, and seaice_summary call (moved from seaice_readparms)
464      - seaice_summary.F : add missing report of read turbulent flux term set up
465                           and SITRACER.
466      - seaice_check.F : check range; inform and stop if retired CPPs are used
467                         (incl. SEAICE_AGE).
468      - seaice_growth.F : unified use of SEAICE_availHeatFrac/Frz, without
469             CPP switch, same computation as before for the different options.
470      - change results at the truncation level.
471    o pkg/seaice:
472      - remove un-used parameters LAD & MAX_TICE ; add new run-time parameters:
473        useMaykutSatVapPoly (default=F), postSolvTempIter (default=2) and
474        SEAICE_wetAlbTemp (default=-1e-3). Remove option SEAICE_SOLVE4TEMP_LEGACY.
475      - update verification/*/input*/data.seaice:
476        to reproduce previous results with former #defined SEAICE_SOLVE4TEMP_LEGACY
477        code, set useMaykutSatVapPoly=T & postSolvTempIter=0 ;
478        and to reproduce previous results with former non-SOLVE4TEMP_LEGACY code,
479        set SEAICE_wetAlbTemp=0 & SEAICE_snowThick=0.
480    o pkg/seaice/seaice_solve4temp.F (SOLVE4TEMP_LEGACY):
481      - remove LEGACY code for solving for tsurf (A1,A2,A3) but maintain the same
482        algorithm (same choice: useMaykutPolySatVap=T, postSolvTempIter=0);
483        difference in results only due to machine truncation.
484      - remove MAX_TICE (tsurf is always =< TMELT anyway); keep MIN_TICE if using
485        MaykutPolySatVap; keep MIN_LWDOWN.
486      - adapt SEAICE_MODIFY_GROWTH_ADJ code (untested) to non-legacy formulation.
487      - update output of verification exp. lab_sea (4 fwd: 11 cg2d digits except hb87,
488        + 3 AD: 6 digits except evp) and offline_exf_seaice.seaice (12 digits).
489    o pkg/salt_plume:
490      - isolate saltPlumeFlux array exch into a specific S/R called from
491        do_oceanic_phys.F
492      - add interface to pkg/salt_plume (filling of saltPlumeFlux) in pkg/thsice.
493    o verification:
494      - move untested set-up to MITgcm_contrib/verification_other.
495    o pkg/seaice:
496      - retire old way of SEAICE_AGE. Now replaced with ALLOW_SITRACER.
497    o pkg/seaice:
498      - seaice_solve4temp.F (keeping results unchanged):
499        * add 2 future run-time params to select which saturation vapor pressure
500          formula is used and how post-iteration fluxes are set.
501          Temporary set these 2 params according to option SOLVE4TEMP_LEGACY;
502        * New piece of code (not used) to update surf. atmos. heat flux F_ia using
503          the linearized expression to stay consistent with tsurf finding.
504      - seaice_freedrift.F avoid floating exception in sqrt(y) since y=sqrt(x*x)-x
505        can be < 0.
506    o pkg/seaice/seaice_solve4temp.F (SOLVE4TEMP_LEGACY undef):
507      - remove from F_ia (and from it's derivative dFiDTs1) the contribution of
508        conductive heat flux F_c , and add it explicitly when updating tsurf as
509        solution of: Fc = Fia + d/dT(Fia - Fc) *delta.tsurf
510        so that now F_ia has a consistent meaning through the entire routine.
511        This causes differences at truncation level: update output of fwd exp.
512        global_ocean.cs32x15.seaice.
513    o pkg/seaice:
514      - lots of editing/cleaning in seaice_solve4temp.F + better documentation
515        of arrays, sign/direction of fluxes; no effect on results.
516      - replace hard coded 273.16 (=previous value of celsius2K) by celsius2K
517        in seaice_budget_ocean.F & seaice_solve4temp.F (SOLVE4TEMP_LEGACY part);
518        note: this should have been done before changing celsius2K default.
519      - to keep results unchanged, add back old value of celsius2K in verification
520        exp. input*/data : lab_sea (AD), offline_exf_seaice (fwd+AD) & seaice_obcs
521      - replace hard coded seawater freezing temp in seaice_solve4temp.F (part
522        SOLVE4TEMP_LEGACY) of 271.20 (=previous value of celsius2K + default
523        value of SEAICE_freeze) by celsius2K+SEAICE_freeze so that seawater
524        freezing temp is consistent with value in seaice_growth.F ; this causes
525        differences at machine truncation level: update lab_sea AD output (3/4).
526    o pkg/seaice:
527      - mask (in exf_init_fixed.F) atemp,aqh,evap,precip,runoff,lwflx,areamask
528        and climsst/sss even when using seaice (to prevent calculation that might
529        use SST on land); does not affect any verification exp.
530      - apply mask to taux,tauy (in seaice_get_dynforcing.F); update output
531        of lab_sea.fd & lab_sea.hb87 and global_ocean.cs32x15.seaice_dynmix.
532    o pkg/seaice/seaice_growth.F: add mask to avoid non-zero ice thickness
533      over land (non-legacy code)
534    o vectorize salt_plume package:
535      - add extra code to salt_plume_frac and salt_plume_tendency_apply_s
536      - this code computes plumebk everywhere (also over land), thus requires
537        code to avoid divisions by zero and catch the case of kLev=Nr.
538      - efficiency of salt_plume_frac is still sub-optimal
539    o tools (genmake2):
540      - fix makefile NAME specification (option: -makefile NAME) by adding
541        "-f $MAKEFILE" in few places where it was missing including makedepend
542        command (contribution from Paul).
543    
544    checkpoint63i (2012/01/24)
545    o model/src:
546      - add factorized versions of some EOS code to find_rho.F,
547        define USE_FACTORIZED_EOS to turn it on (default for TARGET_NEC_SX)
548    o model/src:
549      - add celsius2K to namelist PARM01; remove unused recip_rhoNil from PARAMS.h;
550      - change default celsius2K from 273.16 to 273.15
551      - to keep results unchanged, add back old value of celsius2K in verification
552        exp. input*/data : aim.5l_cs, 1D_ocean_ice_column, lab_sea (fwd),
553         global_ocean.cs32x15(seaice) & cpl_aim+ocn(input_atm).
554    o model/src: add a little initialisation trick to find_rho.F and find_alpha.F
555      to make TAF generate vectorizable code
556    o pkg/seaice/seaice_evp.F: add code (copied from CICE) that avoids underflows.
557       Turn on by defining SEAICE_EVP_ELIMINATE_UNDERFLOWS. Most compilers
558       have flags that do this more efficiently.
559    o pkg/diagnostics/diagstats_calc.F
560      - for TARGET_NEC_SX fix the treatment of the scaling factor tmpFac=scaleFact
561    o pkg/obcs (with exch2):
562      - derive OB indices in overlap region from OB-InsideMask (in obcs_init_fixed.F)
563        and remove code (in obcs_readparms.F) which was based on EXCH of indices
564        (through buffer) and did not account for exch2 (e.g., CS-grid) topology.
565    o pkg/exf and seaice exp:
566      - change offline_exf_seaice.seaicetd test exp. to use default DIFF1 value (=0)
567        so that switching off area & heff advection flags does not affect results.
568      - change default EXF_LWDOWN_WITH_EMISSIVITY to #define in EXF_OPTIONS.h
569      - keep exp. seaice_obcs & 1D_ocean_ice_column(ad) unchanged (using #undef
570        EXF_LWDOWN_WITH_EMISSIVITY) and, using pkg/exf default emissivities, update
571        results of verification experiments: 1D_ocean_ice_column(fwd),
572        global_ocean.cs32x15.seaice(fwd+ad) & seaice_dynmix(ad), lab_sea (all 8)
573        and offline_exf_seaice (all 4).
574    o pkg/seaice:
575      - remove array YNEG, RIVER, TMIX (replaced by local var) from common block;
576        remove also areaNm1 & hEffNm1 when SEAICE_GROWTH_LEGACY is undef.
577      - fix bug: areaNm1 & hEffNm1 are needed in seaice_growth (SEAICE_GROWTH_LEGACY)
578        but were not filled when resp. SEAICEadvArea=F & SEAICEadvHeff=F and
579        not multi-dim advection;
580      - fix seaice_growth.F to compile with both SEAICE_GROWTH_LEGACY and
581        SHORTWAVE_HEATING #undef.
582    o optim: make Makefile more robust (?)
583    o pkg/obcs:
584      * fix treatment of obcs_read_pickup for TAF
585    o pkg/shelfice:
586      * add missing initialisation of num_shifwflx
587      * new adjoint verification exp. for isomip
588      * change Prandtl and Schmidt numbers from generic formulations
589        (in terms of model diffus. and visc.) to separate runtime
590        parameters, with Holland and Jenkins (1999) default values.
591    o pkg/exf (interpolation):
592      - extended input field (2 rows) near the N & S poles:
593        * fill in with the symetric value (when even Nb of data in longitude)
594        * add average value at the poles only for scalar quantities ; for vector
595          component interpolation, skip the averaging and keep duplicated values,
596          unless the 2 components have same location (uvInterp=T) in which case
597          interpolate the 2 components together using S/R EXF_INTERP_UV.
598      - new S/R EXF_INTERP_UV to interpolate the 2 components of a vector field
599        together: this allows to account properly for local orientation when
600        averaging at N & S pole.
601      - add CPP option EXF_USE_OLD_INTERP_POLE to recover old results regarding
602        exf-interpolation near N & S poles. Undef by default.
603      - add debug check/print on 1rst iter if debugLevel >=2.
604    o pkg/exf:
605      - change masking flags definition (no longer "parameter"), put them in
606        common block and set them in S/R EXF_INIT_FIXED.
607      - change recognized masking flag from s,u,v to c,w,s since the mask
608        to use (maskC,W,S) depends on position on model grid and has little to
609        do with scalar/vector difference; fix masking if using P-coordinates.
610      - fix masking of wind-stress (was wrong if interpolated or read on A-grid)
611        and update results of exp. global_with_exf (x2).
612      - fix setting of zenith-angle table when SHORTWAVE_HEATING is undef.
613    o pkg/obcs
614      - S/R obcs_calc_stevens: fix a small bug (gammat -> gammas where appropriate)
615    o pkg/exf (interpolation):
616      - assume periodicity in X only if input field cover full longitude range.
617      - improve search for lat. index (supposed to be faster, in ~log2(ny) steps,
618        and should vectorise).
619      - fix input lat of the 2 added row (in case we provide N.pole data).
620    
621    checkpoint63h (2011/12/30)
622    o pkg/seaice:
623      - change declaration of UVM from _RL to _RS in order to get B-grid
624        uIce,vIce monitor when _RS = real*4
625    o pkg/offline:
626      - new S/R OFFLINE_RESET_PARMS for resetting main-model params (switch off flags);
627      - compute vertical velocity if not read from file (switch on exactConserv
628        & staggerTimeStep);
629      - fix output of ptracer monitor iter & time for default PTRACERS_monitorFreq.
630    o verification:
631      - update grid-files (in tutorial_held_suarez_cs/input and fizhi-cs-32x32x40/input)
632        with grid-angle generated using "utils/matlab/cs_grid/cubeCalcAngle.m":
633        fix Pb in yG definition @ 2 missing corners (previously yG was averaged);
634      - update output of exp. global_ocean.cs32x15.viscA4 after changing
635        grid-file angles (used here for coriolis-3d);
636      - remove (or gzip) few files not needed to run fizhi-cs experiments.
637    o pkg/exf (vector interpolation):
638      - rotate vector component toward local grid-axis orientation using grid-angles
639        (stored in GRID.h) instead of locally computed rotation angle; keep old code
640        available with exf option EXF_USE_OLD_VEC_ROTATION (undef by default).
641    o pkg/seaice:
642      - allow to compile with exf options ALLOW_ATM_TEMP or ALLOW_DOWNWARD_RADIATION
643        undefined. Fix and remove the stop when ALLOW_RUNOFF is undefined.
644    o pkg/PKG_OPTIONS.h files:
645      - move #include "CPP_OPTIONS.h" just after #include "PACKAGES_CONFIG.h",
646        outside of the #ifdef ALLOW_THISPKG / #endif block.
647      - update verification/*/code/PKG_OPTIONS.h files.
648    o add a verification experiment (offline_exf_seaice/input.seaice) that test
649      the B-grid LSOR solver
650    o pkg/seaice: sort out emissivity and long wave radiation step 2:
651      - add emissivity for snow and ice as new run-time parameters
652        (unfortunately) that default to the corresponding exf values; this
653        changes results in most verification experiments so that for backward
654        compatibility these parameter have to be set explicitly to inconsistent
655        values (ugly);
656      - the exf-flag EXF_LWDOWN_WITH_EMISSIVITY then gets rid off the hard-wired
657        emissivities of 0.97 associated with lwdownloc in S/R seaice_solve4temp
658        until we agree how to handle this bug properly
659    o pkg/exf (interpolation):
660      - add a set of run-time param ({inputfield}_interpMethod), one for
661        each interpolated input field, to select the interpolation method
662        with a value of zero switching off the interpolation;
663      - print interpolation parameters to standard output;
664      - refine exf_check.F accordingly ; stop if USE_NO_INTERP_RUNOFF is defined
665        (to use instead runoff_interpMethod=0 in data.exf).
666      - simplify default setting of interpolation parameters (for all fields,
667        set position to match model grid cell-center position, leading to trivial
668        interpolation in case of regular Lat-Lon grid) and fix for the case of
669        non-uniform delY.
670    o pkg/exf/exf_radiation.F: add the factor ocean_emissivity to lwdown, for
671       within #ifdef EXF_LWDOWN_WITH_EMISSIVITY/#endif. Unless ocean_emissivity=1.
672       this factor is absolutely required, because the lw exitance (= out-going
673       long wave radiation) is emissivity*stefanBoltzmann*T^4 + rho*lwdown,
674       where the reflectivity rho = 1-emissivity for conservation reasons. Once
675       this is established, we can remove the CPP-Flag (if we want to).
676    o pkg/seaice:
677      - qualify a stop statement in S/R seaice_check: EXF_READ_EVAP and
678        ALLOW_BULKFORMULAE are only required if SEAICE_EXTERNAL_FLUXES is defined
679      - sort out emissivity and long wave radiation, step 1: make SEAICE_emissivity
680        what the name implies (and not emissivity*BoltzmannConstant), this means
681        the old default value of 5.5e-8 now means
682        5.5e-8/5.670e-8 = 0.97001763668430343479 as ocean_emissivity in
683        S/R exf_readparms
684      - FV-discretization of the B-grid LSOR solver, turn on with
685        SEAICE_LSRBNEW. This new solver also involves a slight re-organization
686        of the calling routine dynsolver, so that B and C-grid code look a
687        little more alike.
688      - fix index bugs in ostres.F (B-grid code)
689    o pkg/seaice/seaice_ocean_budget.F: change (unused) code to make it look better
690    o pkg/seaice/seaice_readparms.F: make ocean_emissivity*stefanBoltzmann the
691      default for SEAICE_emissivity, if useEXF; requires setting a wrong
692      parameter value in global_ocean.cs32x15/input.seaice/data.seaice for
693      backward compatiblity
694    o model/src: use sigmaR in calc_ivdc
695    
696    checkpoint63g (2011/12/16)
697    o pkg/seaice/seaice_growth.F:
698      fix heat conservation of the coupled ocean-seaice system.
699      when SEAICE_HEAT_CONSERV_FIX is defined, the mismatch of
700      solid vs liquid water treatment is resolved via QNET.
701    o pkg/seaice/seaice_growth.F:
702      add missing term for sublimation in saltFlux, which was breaking conservation.
703    o pkg/seaice/seaice_model.F:
704      Remove this patholigical case treatment in evolution branch,
705      where it is un-necessary and breaks conservation.
706      Update global_ocean.cs32x15/results accordingly for
707      output.seaice.txt output_adm.seaice.txt and output_adm.seaice_dynmix.txt
708    o model/src:
709      useRealFreshWaterFlux: remove masking of EmPmP (using maskInC) in
710      external_forcing_surf.F and apply mask directly in S/R SOLVE_FOR_PRESSURE.
711    o pkg/obcs:
712      modify Stevens boundary conditions so that S/R obcs_calc_stevens computes
713      tendency for temperature and salinity that is then applied to update
714      theta and salt in S/R obcs_apply_ts; this requires proper masking of all
715      horizontal advection and diffusion contributions on the boundary (in
716      S/Rs gad_advection, gad_calc_rhs, gmredi_rtransport, gmredi_calc_diff), and
717      removing the mask in S/R timestep_tracer. The advantage of this approach is
718      that the updated tracer values include contributions from the surface
719      forcing and vertical diffusion.
720      This modification changes exp4.stevens because of vertical diffusion.
721    o model/src:
722      change non-curvilinear grid setting to also work with exch2 + blank tiles:
723      - move delX,delY to new header file (SET_GRID.h) and adjust length to 1rst
724        face dimensions.
725      - new S/R INI_LOCAL_GRID to define model tile-local grid (using same units
726        as delX,delY) and called from S/R INI_CARTESIAN_GRID, INI_CYLINDER_GRID
727        and INI_SPHERICAL_POLAR_GRID.
728      change test-experiment global_ocean.90x40x15:
729      - split the domain in many more tiles (9x4 tiles of 10x10 each);
730      - switch to exch2 and remove 1 blank-tile (but only for MPI test).
731      - update results of both test (std & dwnslp).
732    o pkg/diagnostics/diagstat_calc.F: fix problem with non-initialised halos in
733       tmp-fields for TARGET_NEC_SX at the cost of extra loops and less vectorisation
734    o model/src:
735      - take sigma-coords related code out of update_etah.F into new S/R UPDATE_ETAWS
736        and fix initialisation when using sigma-coords.
737    o model/src:
738     - improve Gael's changes from Jan 14, 2011 "addition of an 'update' of hfacc etc.
739       to their current value at the beginning of forward_step.F": add a new run-time
740       switch "doResetHFactors" (default=false) and use it to do (or not) the resetting.
741     - set doResetHFactors=T in the following test exp:
742        global_ocean.90x40x15/input (rStar) & input.dwnslp (linFS),
743        global_ocean.cs32x15/input.seaice (rStar), hs94.cs-32x32x5/input.impIGW (linFS)
744        and tutorial_global_oce_in_p (nonLinFS in p)
745    o pkg/ecco
746      - added IES cost term
747    o verification/advect_xz
748      - scale down the depth by 1/100 (from 200 km to just 2.km)
749      - add secondary test using divergent flow, r-star and implicit vertical advection.
750      - add note (check_conserve_TS.txt) and matlab script to check global
751        conservation of T & S with NonLin-FreeSurf and Adams-Bashforth.
752    o pkg/rbcs:
753      - add missing relaxUFile & relaxVFile in namelist (in rbcs_readparms.F).
754    o pkg/obcs (Stevens BCs):
755      - fix various problems in the phase speed computations of the Stevens
756        boundary conditions:
757        - sign error for western and southern boundaries,
758        - time tendencies were underestimated by factor of dTracerLev and some just
759          zero (for multidim advection schemes) -> now estimate time tendencies
760          from difference between previous (n) time level and the one before (n-1);
761          this requires storing a field per tracer per boundary, also in the pickup
762          files.
763        - replace deltaTmom in cflMer/Zon computation with dTracerLev
764        - set default phase velocity to cflMer/Zon
765      - update verification experiment exp4.stevens
766    o pkg/generic_advdiff (implicit_r):
767      - fix implicit vertical advection conservation with AB and/or NonLin-FreeSurf
768        (remove Tr*d/dz(w) in gad_implicit_r.F and add it in gad_calc_rhs.F);
769      - fix implicit vertical diffusion or advection with NonLin FreeSurf
770        (was using current recip_hFacC instead of future recip_hFacC): set future
771        recip_hFac in thermodynamics.F and pass & use it in all vertical implicit
772        solver S/R ;
773      - fill diagnostics of vertical advective fluxes (computed from tendency)
774        when using implicit vert. advection;
775      - update output of exp that uses NonLin-FreeSurf & implicit vertical diffusion:
776         global_ocean.90x40x15 (fwd+AD), global_ocean.cs32x15 (4 fwd +4 AD),
777         tutorial_global_oce_in_p (fwd), tutorial_tracer_adjsens (AD)
778         and cpl_aim+ocn (used in ocean); to be fixed: bottom_ctrl_5x5.
779    o pkg/diagnostics:
780      - add diags for T & S tendency which goes through Adams-Bashforth.
781    
782    checkpoint63f (2011/11/30)
783    o pkg/obcs/obcs_calc_stevens.F:
784      - join some loops to reduce number of if-statements
785      - fix a bug in code for northern and southern boundaries.
786    o pkg/seaice/seaice_init_varia.F
787      - undo resetting UVM=0 that has slipped in unnoticed in r1.49 and
788        caused zero ice-velocities for the B-grid code
789    o pkg/seaice/seaice_init_fixed.F
790      - fix a bug in the initialisation of the second metric terms
791        k2AtC and k2AtZ: k2AtC was set to the value of k2AtZ and k2AtZ was 0.
792      - this affects all seaice configurations with useCurviLinearGrid = .true.
793        and SEAICEuseDynamics = .true. (default) and SEAICEuseMetricTerms
794        = .true. (default)
795      - the only verification experiment affected is global_ocean.cs32x15:
796        icedyn, seaice, and seaice_dynmix (AD)
797    o pkg/thsice/thsice_diagnostics_state.F
798      - only for TARGET_NEC_SX: initialise all of tmpFld, so that overlap does
799        not contain garbage that can lead to surprises in diagstats_calc.F
800    o model/src:
801      - move bi,bj loops inside INTEGR_CONTINUITY ;
802      - call INTEGR_CONTINUITY directly from forward_step.F
803        (previously called from momentum_correction_step.F)
804      - call UPDATE_ETAH from integr_continuity.F and update initialise_varia.F,
805        forward_step.F and pkg/ecco/the_main_loop.F
806    o model/src/do_oceanic_phys.F:
807      - reset addMass to zero only if useICEFRONT ;
808      - separated k-loop for rhoInSitu calculation ;
809      - add 2 diagnostics for wVel*delta^k(Rho) at constant pressure (= WdRHO_P)
810        and at constant T,S (= WdRHOdP);
811      NOTE: change diagnostics WRHOMASS : this is now simply the Vertical transport
812        of In-Situ Density (Anomaly) (=wVel*rho^bar-k) (previously was Vertical
813        transport of locally-referenced potential density);
814        to recover old diag: (WRHOMASS)_old = (WRHOMASS)_new -1/2 * (WdRHOdP)
815    o gluemnc:
816      - replace ncrcat with ncks when adding variables to *.glob.nc
817      - change the way variables without record dimensions are handled so that
818        files that have variables with and without record variables can be glued:
819        add a record dimension with a new unique name to be able to differentiate
820        between variable with and without a-prior record dimensions. Remove
821        this record dimension before adding the variable to the *.glob.nc file.
822        This procedure automatically works also for grid.*.nc files that do not
823        have any record dimension.
824    o verification/cpl_aim+ocn:
825      - generate new reference output on baudelaire (gfortran, mpich2) (previously
826        from old aces-grid cluster, ao + ifort) and update 'run_cpl_test' script.
827    o pkg/obcs/obcs_calc_stevens.F:
828      - add code for northern and southern boundaries.
829      - reorder some loops to save some operations and so that drFBar can be scalar
830    o model/src:
831      - re-arrange extrapolation calculation in Adams-Bashforth S/R (affects machine
832        truncation) and add diagnostics for Adams-Bashforth tendency increment.
833      - update test-exp. AD output:
834        1D_ocean_ice_column, bottom_ctrl_5x5, lab_sea.noseaicedyn, obcs_ctrl;
835      and FWD output: exp4 (x3), fizhi-cs-32x32x40, fizhi-cs-aqualev20,
836        front_relax (x3), global_ocean.90x40x15 (x2), global_ocean.cs32x15 (x5),
837        global_ocean_ebm, ideal_2D_oce, internal_wave, isomip (x3), lab_sea (x4),
838        matrix_example, MLAdjust (x5), natl_box (x2), tutorial_advection_in_gyre,
839        tutorial_global_oce_in_p, tutorial_global_oce_latlon and
840        tutorial_plume_on_slope.
841    o pkg/diagnostics/diagstats_calc.F: add special code for TARGET_NEC_SX
842      that vectorises. This code uses 3 extra 2D fields, F90 array assignments
843      and F90 intrinsic routines SUM, MINVAL, MAXVAL, but since TARGET_NEC_SX
844      does not even come with an F77 compiler anymore, this should not be
845      a limitation
846    
847    checkpoint63e (2011/11/06)
848    o pkg/seaice adjoint of LSR:
849      - substantially rework STORE dirs.
850      - add new flag SEAICE_LSR_ADJOINT_ITER and parameter SOLV_MAX_FIXED
851        this flag will do SOLV_MAX_ITERS but only store SOLV_MAX_FIXED fields
852        and only perform SOLV_MAX_FIXED adjoint iters.
853        If flag SEAICE_LSR_ADJOINT_ITER is undef-ined, the store in the iteration
854        always goes to same record, meaning that the last forward field will be
855        the one used in the adjoint - an approximation.
856      - now produces non-zero LSR-related gradients, and acceptable gradients for
857        An's zonal (x-z) test case (to be checked in)
858      - lab_sea: produces acceptable gradients for lab_sea with forward/backward LSR
859        (but these are screwed up by the thermodynamics in the first place);
860        reduce from 4 to 3 timesteps to avoid t.d. issue as temporary solution;
861        output_adm.txt also reflects changes to seaice_lsr
862      - global_ocean.cs32x15:
863        * the "default" input_ad.seaice has been re-defined to always exclude dynamics
864          (output_adm.seaice.txt was updated)
865        * new input_ad.seaice_dynmix tests a forward LSR / backward free-drift
866          (output_adm.seaice_dynmix.txt)
867    o test-exp. exp4+stevens:
868      - switch off pTracers and nonHydrostatic (restart problems with NH); update output
869    o pkg/seaice (lsr solver):
870      - put coriolis term into FORCEX,Y (as in seaice_evp.F; previously in rhsU,V only);
871        update output (change truncation) of FWD test exp lab_sea & global_ocean.cs32x15
872      - fix SEAICEuseFREEDRIFT for new OBCS version (ndef OBCS_UVICE_OLD)
873      - new parameter "LSR_mixIniGuess" allows (if=2,4) to mix free-drift solution
874        into initial guess for linearised solver; use weight ~ (1/err)^2,4.
875      - compute (with new S/R) and print initial (+ free-driff sol. if available)
876        and final residual of linearised system.
877    o pkg/pp81: add diagnostics for vertical eddy viscosity and diffusivity
878      (requires new subroutines pp81_init_fixed.F/pp81_diagnostics_init.F)
879    o pkg/obcs: Stevens BCs (still only for east and west)
880      - fix Stevens BCs by using intermediate velocities of previous
881        time step as "baroclinic" contribution rather velocity of one grid cell
882        inside the boundaries; more consistent but makes the entire treatment
883        more complicated, requires new pickup files and two new S/Rs:
884        obcs_copy_uv_n and obcs_save_uv_n
885        keep old version with flag OBCS_STEVENS_USE_INTERIOR_VELOCITY
886        (undefined by default)
887      - silently move computation of some grid factors into separate loops to
888        save some recomputations
889      - add a hack for non-linear free surface
890      - add a verification experiment to exp4 that tests this code
891    o make gluemnc/xplodemnc work with (moron) non-GNU shell tools
892    
893    checkpoint63d (2011/10/25)
894    o pkg/obcs + seaice-dynamics:
895      - new implementation calls OBCS_APPLY_UVICE (in seaice_dynsolver.F) before
896        solving for uIce,vIce and prevent SEAICE_LSR or SEAICE_EVP to modify OB
897        values (consistent with an implicit method).
898      - add option OBCS_UVICE_OLD (in OBCS_OPTIONS.h, defined by default) to
899        return to older implementation (same results as before); note that none of
900        the "experimental" OBCS_SEAICE options are implemented in the new version.
901      - switch test exp. seaice_obcs to use new version (update output).
902    o pkg/seaice:
903      - add few stop (B-grid & CS-exch, B-grid & obcs, AUTODIFF & SEAICE_maskRHS)
904      - add parenthesis in Water-Ice drag calculations (evp & lsr);
905      - in seaice_lsr.F, simplify and fix AA3 setting in case sNx or sNy=1;
906        and fix case SEAICE_waterDrag=0 (but unstable if no or little seaice)
907      - update output of test exp lab_sea that uses evp or lsr (fwd+ad)
908        and global_ocean.cs32x15 (icedyn & seaice fwd+ad).
909    o pkg/layers:
910      - Include potential density as new coordinate (Thanks to David Munday)
911    o pkg/dic:
912      - Remove subroutine CALC_PCO2_APPROX_CO3 from carbon_chem.F and add
913        carbonate computation/output to CALC_PCO2_APPROX
914    o pkg/generic_advdiff
915      - make TAF generate code that vectorizes:
916        gad_dst3fl_adv_*.F, gad_u3c4_impl_r.F
917    o model/src:
918      - improve vectorization also for adjoint code of
919        solve_tridiagonal and solve_pentadiagonal. As this requires up to
920        5 new 3D-fields, this code is only turned on for the combination of
921        ALLOW_AUTODIFF_TAMC and TARGET_NEC_SX. Also remove error message
922        for singular matrix check (only for TARGET_NEC_SX).
923      - remove hard-wiring of CPP-flag ALLOW_SOLVERS_KLOOPINSIDE to
924        ALLOW_AUTODIFF. This flag now needs to be set outside of
925        solve_tri/pentadiagonal.F
926    o pkg/exf:
927      - fix previous modif in exf_readparms.F (revision 1.66: treatment of
928        optional namelist EXF_NML_OBCS).
929      - add many debug-print (to trace down where pkg/cal error msg comes from)
930    o pkg/mom_vecinv/mom_vi_hdissip.F
931      - rearrange loops so that vectorization is improved and in particular
932        the adjoint routine vectorizes. The code is a little longer now, but I
933        think easier to read.
934        Note: CPP-flag MOM_VI_ORIGINAL_VISCA4 is not tested.
935    o pkg/seaice:
936      - allow to specify initial seaice velocity from files (uIceFile,vIceFile)
937    o pkg/exch2:
938      - alternative code (without tile x tile matrix) for cumulated (global) sum;
939        used as default; keep using matrix version in adjustment.cs-32x32x1.
940    o tools/build_options:
941      - after merging some MPI and/or multi-threads specific optfiles so that
942        the modified default optfile support both built (using genmake2 -mpi
943        for the MPI built, using genmake2 -omp for OpenMP built),
944        move now obsolete optfiles to tools/build_options/unsupported/
945       (add copy of email sent to support list in doc/optfiles_changes.txt)
946    
947    checkpoint63c (2011/09/28)
948    o pkg/ebm:
949      - fix ebm_zonalmean.F for several procs in Ydir (nPy > 1); update output of
950        test exp. global_ocean_ebm (affects machine truncation, 12 digits for cg2d)
951    o pkg/seaice (SItracer pickup)
952    * Simple code for pickup of SItracer fields (#define ALLOW_SITRACER)
953      To be done:
954      - thorough testing of missing fields in S/R seaice_read_pickup
955      - thorough matching between generic tracers and specific fields used
956        (e.g. volume-weighted age, area-weighted age, salinity, ...)
957    o pkg/grdchk:
958      - all procs calculate and print finite-difference gradient (for testreport)
959      - change description output used by testreport;
960      - AD testing: also compare and report Finite-difference gradient;
961        => update all output_adm*.txt
962    o test exp. global_ocean_ebm:
963      - switch back useRealFreshWaterFlux (no problem anymore with run-off);
964        and turn on exactConserve; update (fwd) output.
965    o pkg/seaice (LSR):
966      - print to STDOUT number of solver iterations at SEAICE_monFreq interval.
967      - modify solver to deal cleanly with u/v switch at face edges (CS-grid):
968        * identical results with non-CS topology (but save up to half of EXCH calls)
969        * no much changes in cs-32 verification tests since no ice at face edges
970         (differences due to convergence criteria, since nb of iterations changed)
971        * expect some differences on lat-lon-cap grid.
972        update FWD results of global_ocean.cs32x15 test exp. (icedyn & seaice)
973    o pkg/exch2:
974      - add new CPP option to disable Cumul-Sum matrix (to save storage when using
975        many tiles); until alternative coding is added, just add a stop.
976    o pkg/kpp:
977      - move ptracer/salt correction to KPP diffusivity from calc_3d_diffusivity.F
978        to S/R KPP_CALC_DIFF_PTR (+ add tracer-index to argument list).
979    o optfiles:
980      - merged few MPI specific (*+mpi*) and multi-threads specific (*+mth) optfiles
981        into corresponding standard one, which now support different build:
982        (when using "genmake2 -mpi" for MPI built, "genmake2 -omp" for OpenMP built)
983      - add "darwin_amd64_gfortran" optfile (initially from Constantinos, tested by Gael)
984    o pkg/obcs (seaice):
985      - add missing EXCH for uIce,vIce after applying OBCS;
986      - remove S/R EXF_SWAPFFIELDS_X/Y , disable S/R EXF_SET_OBCS_X/Y by adding
987        argument = number of levels to S/R EXF_SWAPFFIELDS_XZ/YZ and S/R
988        EXF_SET_OBCS_XZ/YZ ; update obcs_exf_load.F;
989      - fix EXF_SET_OBCS_XZ/YZ for multi-threaded (assuming loaded arrays are shared)
990      - verification exp. seaice_obcs: split domain in 2 tiles ; add SIZE.h_mpi
991        and eedata.mth for MPI and mutlti-threaded testing.
992    o pkg/flt:
993      - make FLT EXCH working with multi-threads (and MPI + multi-threads);
994      - use buffer for floats IO (trajectories & profiles); size set in FLT_SIZE.h;
995      - fix pickup and trajectories + profiles output with multi-threads;
996      - add parameter to select group of fields to write along trajectory and
997        profile (default unchanged);
998      - only call PORT_RAND* function when flt_noise <> 0;
999      - add multi-threaded test for verification exp. flt_example.
1000    o eesupp/src:
1001      - fix S/R ALL_PROC_DIE for MPI+multi-threads.
1002      - USE_OMP_THREADING: check that number of threads (from eedata) matches
1003        actual number (from env.var. setting).
1004    o pkg/ebm:
1005      - fix multi-threading in ebm_area_t.F ; clean-up EBM.h header file.
1006      - add multi-threaded test for verification exp. global_ocean_ebm
1007    
1008    checkpoint63b (2011/08/29)
1009    o pkg/ebm:
1010      - fix sign of runoff;
1011      - update directly forcing fields (Qnet,EmPmR) to use standard
1012        external_forcing_surf.F (remove ebm_forcing_surf.F);
1013      - avoid loading forcing fields a 2nd time (1rst time from ini_forcing.F);
1014      - set either tauThetaClimRelax (in data) or tauThetaZonRelax (in data.ebm)
1015        and apply relaxation towards corresponding SST field (2-D map or ZonAver).
1016      - update global_ocean_ebm parameters file data and update output (fwd+ad).
1017    o verification/matrix_example:
1018      - split domain in 8 tiles (2x4); add SIZE.h_mpi and eedata.mth for
1019        MPI and mutlti-threaded testing.
1020    o pkg/matrix:
1021      - change name of S/R MATRIX_INIT to S/R MATRIX_INIT_VARIA ;
1022      - fix for multi-tiles (add bi,bj indices to exp/impMatrixCounter);
1023      - fix for multi-threaded (remove DATA statement);
1024      - use standard DIFFERENT_MULTIPLE function;
1025      - add MATRIX_OPTIONS.h
1026    o verification/matrix_example:
1027       To allow to split the domain in several tiles, change the domain size
1028        from 31x31 to 32x32 by adding 1 row (on Southern side) + 1 column (on
1029        Western side) of land points.
1030    o (*_)write_pickup:
1031      - fix few bugs in mypackage_read/write_pickup.F
1032      - in MDS_WR_METAFILES calls, replace "myTime" by a local copy into
1033        array of length 1 (was caught by compiler syntax-check).
1034    o pkg/diagnostics (velocity potential solver):
1035      - fix initialisation of main diagonal matrix (for overlap values)
1036    o tools/build_options:
1037      - towards single optfile for MPI and non-MPI built: merge few +mpi optfile
1038        into previously non MPI one (linux_am64 pgf77,open64,pathf90,ifort11)
1039      - linux_amd64_gfortran: merge +mpi_generic version into standard optfile:
1040        * move IEEE flags to DEVEL section; take IEEE flags from +mpi_generic ;
1041        * FAST case: for now, keep -O3 with ini_masks_etc.F in NOOPTFILES list;
1042        and use "-devel" testreport option for standard testing on baudelaire.
1043    o pkg/grdchk:
1044      - Assume that all gradient-check position are within the same tile
1045        corresponding to global indices (iGloTile,jGloTile) and that
1046        positions (i,j indices or nbeg) are local to this tile;
1047      - set tile local-indices and proc. number according to tile global-indices;
1048      - remove grdchkwhichproc from namelist (retired param);
1049      - send adjoint gradient to all procs so that all procs print it to STDOUT;
1050      - switch on MPI test for global_ocean.90x40x15 AD test experiment.
1051    o adding package bbl (Bottom Boundary Layer)
1052      description in MITgcm/pkg/bbl/bbl_description.tex
1053      example/test experiment in MITgcm_contrib/bbl
1054    o adjoint verifications
1055      - changed 5 experiments to multi-tiles
1056        * global_ocean.90x40x15
1057        * obcs_ctrl
1058        * offline_exf_seaice
1059        * tutorial_dic_adjoffline
1060        * tutorial_tracer_adjsens
1061        changed reference output for those that crossed tile boundaries
1062        (changed choices of gradient check positions)
1063      - with same tiling, switch on MPI test for the last 4 (add SIZE.h_mpi)
1064      - temporary bug fix in grdchk_loc.F for obcs
1065    o genmake2 & testreport
1066      - add target "obj" (just for OBJFILES files) to Makefile;
1067      - add option to specify FEXTRAFLAGS on command line.
1068    o pkg/mypackage:
1069      - remove bi,bj arguments from argument list of S/R MYPACKAGE_CALC_RHS
1070    
1071    checkpoint63a (2011/08/02)
1072    o pkg/diagnostics (velocity potential):
1073      - fix velocity-potential calculation when using OBCS: balance net inflow
1074        at each level (new S/R OBCS_DIAG_BALANCE).
1075      - fix some of the problems with OBCS in stream-function calculation.
1076    o pkg/exf/exf_readparms.F
1077      - make treatment of optional namelists (EXF_NML_04, EXF_NML_SGRUNOFF,
1078        EXF_NML_OBCS) more consistent, so that you need not have these lists
1079        in data.exf when they are not used.
1080    o optim/optim_readdata.F:
1081      - add some output about obcs variables that might help debugging
1082      - add a check about nvarlength
1083    o pkg/ctrl: once again, fix computation of endrec in s/r ctrl_init_rec
1084    o pkg/diagnostics (velocity potential):
1085      - fix mask for OBCS (still problems in stream-function with OBCS);
1086      - add specific parameter (default = main code CG2D params) for solver;
1087      - in case of poor convergence, use solution corresponding to lowest residual.
1088    o pkg/seaice/seaice_growth.F: small changes that permit vectorizable
1089      adjoint code. In general statements like tmpscal=fld(i,j) are problematic
1090      and should be avoided where possible.
1091    o model/src (rStar):
1092      - include r* effect on reference-state (PhiRef) in totPhiHyd
1093        (so that it's really the potential anomaly at the cell center);
1094        affect solution only if z* with full pressure in EOS.
1095      - test-exp global_ocean.90x40x15: reduce viscA4 (was not stable) and
1096        update output (because of z* in totPhiHyd and viscA4 changes);
1097      - keep the previous diagnostics as "PHIHYDcR" (closer to potential anomaly
1098        @ constant r) until interpolation at constant r is implemented.
1099    o pkg/diagnostics
1100      - fix RCENTER diagnostics in case cell center is not at interface middle
1101    o add code for TEOS-10 (www.teos-10.org, McDougall et al. 2011). Use
1102      this eos with eosType = 'TEOS10', in data (PARM01). This eos implies
1103      that THETA and SALT are "conservative temperature" and "absolute
1104      salinity"
1105    o pkg/ctrl
1106      - fix computation of endrec in s/r ctrl_init_rec
1107      - ctrl_pack/unpack_*: remove unused variables and some obsolete code
1108    o pkg/seaice/seaice_growth.F
1109      - fix recomputation with FENTY_AREA_EXPANSION_CONTRACTION code,
1110        remove then obsolete STORE directives
1111      - fix STORE directives for tice and tices, so that only the
1112        appropriate part of the fields are stored (and not the entire
1113        field); update global_ocean.cs32x15.seaice AD output.
1114      - cosmetic changes: adjust CPP flags and indentation for better
1115        legibilty
1116    o pkg/autodiff: add mnc-output of adBottomDragFld (code contributed by
1117      Chris Wilson)
1118    o pkg/gmredi:
1119       Add Sub-Meso Eddies parameterisation from Baylor (for now, disabled with TAF),
1120       and test it in verification exp. "front_relax.bvp" (update output.bvp.txt)
1121    
1122    checkpoint63  (2011/07/11)
1123    o pkg/exch2:
1124     - rename+move: nTiles in W2_EXCH2_PARAMS.h --> exch2_nTiles in W2_EXCH2_TOPOLOGY.h
1125     - exch2 version of Cumul-Sum routine: S/R W2_SET_MAP_CUMSUM set up the
1126       (2*nTiles)x(nTiles) Cumul-Sum matrix and Master Proc collects all tiles X,Y
1127       increments, calculates Cumul-Sum @ tile origin and sends results to each tile.
1128    o pkg/diagnostics:
1129     - deal with pairs of post-processed diags which are computed together; in
1130       particular, re-order list of diags within 1 file to save 2nd computation.
1131     - add S/R to compute velocity stream-function (called after velocity-potential
1132       calculation) from divergence free transport -> new diagnostics "PsiVEL".
1133     - add parameter to select grid-point location where PsiVEL == 0.
1134    o eesupp/src:
1135       new S/R to calculate cumulated sum on tiled array, corner grid-cell location
1136       (specific S/R needed with exch2 topology - for now, just print an error msg)
1137    o pkg/shelfice
1138     - Implement friction velocity-dependent transfer coefficients following
1139       Holland and Jenkins, JPO, 1999
1140       Original code by M. Losch with small modifs.
1141       Enable with CPP option SHI_ALLOW_GAMMAFRICT
1142       and runtime flag SHELFICEuseGammaFrict
1143    o verification lab_sea & global_ocean.cs32x15:
1144     - use tools/xmakedepend (instead of cyrus_makedepend, in genmake_local):
1145       does not miss some dependencies (but is slower) and also works with many files
1146       (default makedepend limitation for AD built).
1147     - use cyrus_makedepend in adjustment.128x64x1 (so that it still tested).
1148    o pkg/diagnostics:
1149     - add run-time parameter "useMissingValue" (def=False) to fill land-point
1150        (i.e., where mask=0) with MissingValue ; used only in MNC output file.
1151       This replaces CPP-option DIAGNOSTICS_MISSING_VALUE.
1152     - Extend the use of "missing_value" setting from data.diagnostics for the case
1153       of counter-diagnostics (where fraction-weight is zero). This applies both to
1154       MNC and MDS output files.
1155    o pkg/seaice/seaice_growth.F:
1156      - add 'a priori' cap of latent heat flux based on actual mass considerations
1157        when SEAICE_ADD_SUBLIMATION_TO_FWBUDGET is used in conjunction with the
1158        non-legacy seaice_solve4temp.
1159      - add diagnostic of the residual sublimation freshwater flux (the freshwater
1160        flux taken from the ocean if the total actual latent heat fluxes exceed
1161        the maximum)
1162      - remove the CPP switch around the *_FWbySublim unit change and move diagnostic
1163       fill for SIatmQnt, SIfwSubl, SIatmFW to the end of seaice_growth.F.
1164      - add diagnostic of the actual sublimation freshwater flux (that is 0. ifndef
1165       SEAICE_ADD_SUBLIMATION_TO_FWBUDGET) and of the latent heat flux (evap+sublim).
1166      - bug fix : frWtrAtm needs a_FWbySublim ifdef SEAICE_ADD_SUBLIMATION_TO_FWBUDGET.
1167      - bug fix : missing part to Martin's r_FWbySublim pathological case fix.
1168    o verification 1D_ocean_ice_column:
1169       made model domain truly 1x1x23 instead of 5x5x23 with only center cell (3,3,:) wet
1170       update results
1171    o pkg/diagnostics:
1172     - Implement setting of "Post-Processed" diagnostics (corresponding to gdiag(5)='P')
1173       which are not filled-up but computed from other diags ; In this case, the mate
1174       diag points to the primary (filled-up) diag to used for post processing.
1175     - Update Velocity-potential computation using post-processed diag framework.
1176     ==> Change the ordering of fields and time-periods in MDS output file
1177       when using periodic averaging: now writes one time record with the full set
1178       of fields for this time period, then the next time reccord (it used to be
1179       one field with the full set of time records then the next field).
1180         Note: this is now similar to NetCDF (MNC) output file. <==
1181    
1182    checkpoint62z (2011/06/21)
1183    o adjoint monitor:
1184     - Add adjoint monitor output for packages exf, seaice
1185       and update relevant testreport output
1186    o pkg/seaice:
1187     - re-order diags inits so that they appear in order in available_diagnostics.log
1188     - added diags: hsnow thermo. rates of change, area preceeding ridiging process,
1189       area/heff/hsnow preceeding thermodynamic growth/melt.
1190     - modified diag: SIdA; output actual effect, as the description states.
1191     - modified description: SIqneti, SIqneto, SIuheff, SIvheff, SIdAb*, HSNOW.
1192     - retired redundant diags: SIyneg, SIfice, SIsnwice, SIthdgrh.
1193       (SIyneg->SIdHbOCN; SIfice->SIdHbATC; SIsnwice->SIdHbFLO;
1194        and SIthdgrh->SIdHbOCN+SIdHbATC+SIdHbATO)
1195     - modified diags (2) : switch all SIdA*, SIdH*, SIdS* from delta to rates.
1196     - added diagnostics for seaice generic tracers (SItr*).
1197     - added SItrUnit and SItrNameLong run time param (for SItr* diags).
1198     - in diag names, replaced 'PrTh' abbrev. of 'preceeding thermo' with 'PT'.
1199     I. Fenty: 18-Jun-2011:
1200     Minor changes to seaice package:
1201     1) Retired old variables (A22, SEAICE_lhsublim, areaMax, areaMin, hiceMin) and
1202        added some new ones (SEAICE_area_reg, SEAICE_hice_reg, SEAICE_area_floor)
1203       - Differentiated "regularization variables" from "floor variables"
1204        * areaMin became SEAICE_area_reg (old A22) and SEAICE_area_floor
1205        * hiceMin became SEAICE_hice_reg (old hiceMin)
1206          (with _reg meaning regularization variable)
1207       - SEAICE_lhSublim becomes lhSublim, the sum of SEAICE_lhEvap and SEAICE_lhFusion
1208        so as to ensure energy conservation when going between phases
1209      - A22 was not used anywhere
1210     2) Changed regularization procedure for heffActual and hsnowActual to ensure
1211        well-boundedness and smooth adjoint in seaice_growth.F
1212     3) Fixed a bug where seaice_solve4temp would not recognize ice-free grid cells
1213        because the old regularization always set heffActual >= 0.05 cm
1214     4) Changed the model so that the default behavior is to put a small (10^-5) "floor"
1215        on AREA when HEFF > 0.
1216      - went from requiring ALLOW_PRECLUDE_INFINITESIMAL_AREA to be defined to
1217        requiring that DISABLE_AREA_FLOOR *not* be defined
1218     Affected verifications:
1219      - 1D_ocean_ice_column (output.txt output_adm.txt)
1220      - global_ocean.cs32x15 (output.seaice.txt output_adm.seaice.txt)
1221    o pkg/diagnostics:
1222      - move MNC code from diagnostics_out.F into new diagnostics_mnc_out.F (2 S/R).
1223      - rename S/R GETDIAG to DIAGNOSTICS_GET_DIAG and change type of 1rst argument
1224        (was _RL, now integer) with option = 0 to retrieve all levels.
1225      - add pieces of code to compute velocity potential at each level (new diagnostics
1226        PhiVEL, works only when UVELMASS & VVELMASS are also turned on);
1227        for now, using same params as CG2D (target-resisual, max Nb of iter ...).
1228      - fix few issues with counter diagnostics in diagnostics_setdiag.F &
1229        diagstats_setdiag.F (if diagnostic counter is itself a counter diag)
1230        and in diagnostics_fract_fill.F (do not need a valid pointer for the
1231        diagnostics counter-mate); check that definition of counter-diagnostic
1232        includes a valid counter-mate (in diagnostics_set_levels.F).
1233    o model/src (rStar):
1234      - add rStar scaling factor in diags_phi_hyd.F (similar to calc_grad_phi_hyd.F);
1235        affect solution only if z* with full pressure in EOS;
1236        update output of test-exp global_ocean.90x40x15.
1237    o pkg/seaice:
1238      - introduce siEps=1e-5 parameter
1239      - use areaMax in AREA update (part 4), consistent with ridging step (part 2.5).
1240      - re-organize SEAICE_ADD_SUBLIMATION_TO_FWBUDGET code.
1241      - introduce ALLOW_SITRACER and seaice_tracer_phys.F to handle generic seaice tracer.
1242        For now it covers, and was tested for, ice salinity and age (attached to HEFF),
1243        as well as ice cover age and ridging index (attached to AREA).
1244        For now the run time parameters (in data.seaice/SEAICE_PARM03) are
1245        SItrName (e.g. 'age') and SItrMate ('HEFF', which is the default, or 'AREA').
1246        Up to SItrMaxNum=3 tracers can be used simultaneously.
1247    o pkg/salt_plume:
1248      -introduce SPsalFRAC run time parameter that sets the fraction of the
1249       salt by-product of ice growth (SPsalFRAC*(1-SIsalFRAC)*salt typically)
1250       that gets vertically redistributed (fluxed down) by pkg/salt_plume.
1251    o model debug options:
1252      - Switch reading of debugMode from S/R INI_PARMS (parameter file "data", stored
1253        in PARAMS.h) to S/R EESET_PARMS (parameter file "eedata", stored in EEPARAMS.h).
1254      - Refine debug-msg printing selection (3 new levels):
1255        debugMode  : controls printing of debug messages (sequence of S/R calls).
1256        debugLevel : controls printing of algorithm-relevant auxiliary/debug messages
1257         debLevZero =  0 ; /* level of disabled aux. msg printing */
1258         debLevA =  1 ; /* level of minimum  aux. msg printing */
1259         debLevB =  2 ; /* level of low aux. print (report read-file opening)*/
1260         debLevC =  3 ; /* level of moderate debug prt (most pkgs debug msg) */
1261         debLevD =  4 ; /* level of enhanced debug prt (add DEBUG_STATS prt) */
1262         debLevE =  5 ; /* level of extensive debug printing */
1263        New debugLevel default: with default debugMode value (=F),
1264          = 2 (debLevB) or = 1 (debLevA) in case ALLOW_AUTODIFF is defined.;
1265          and if debugMode=T, default debugLevel = 4 (debLevD).
1266        Relation with previous settings:
1267         debLevB (=2) corresponds to former debLevA (=1)
1268         debLevD (=4) corresponds to former debLevB (=2)
1269        Note:
1270         a) if debugLevel=0, skip WRITE_GRID call when nIter0 > 0 (same as before);
1271         b) default debugLevel=1 is convenient in AD runs (avoid many file opening msgs);
1272            to recover previous default, set debugLevel=2 (e.g. AD-test hs94.1x64x5)
1273      - Add new parameter (printResidualFreq, read from PARM02 namelist) to print
1274        detailed CG solvers convergence; off (=0) by default, except if debugLevel=5.
1275    o pkg/obcs:
1276      - change OBCSfixTopo default from True to False (should not change the results);
1277        keep OBCSfixTopo=T in verification-exp. seaice_obcs.
1278    o pkg/thsice:
1279      - fix bug in thsice_calc_thickn.F (was introduced in version 1.18) in
1280        2nd layer seaice sublimation (unlikely to happen)
1281      - use Interior mask for OBCS in thsice_advection.F (similar to what is
1282        done in gad_advection & seaice_advection).
1283    o adjoint:
1284      bug fix spotted by Gael Forget:
1285      seaice_advection and thsice_advection still had
1286      legacy CPP options to avoid CS corner updates for adjoint
1287    o pkg/seaice:
1288      => Change some of the defaults (2011/05/29):
1289         - change SEAICEuseFluxForm default (from False to True)
1290         - change DIFF1 default (from 0.004 m/s to 0. m/s)
1291         And print warnings if DIFF1 is not set in data.seaice and centered
1292          avection scheme is used without any diffusion.
1293      also:
1294      - fix seaice_diffusion calls in default AdvScheme part of seaice_advdiff.F;
1295      - set SEAICEdiffKh[] default in the same way as SEAICEadvSch[]
1296      - stop if DIFF1<>0 with SEAICEadvScheme <> 2, if DIFF1<>0 with any
1297        other non-zero SEAICEdiffKh[] diffusivity, if SEAICEadvSalt=T with
1298        #undef SEAICE_VARIABLE_SALINITY, if SEAICEadvAge=T with #undef SEAICE_AGE.
1299      update results of test exp.:
1300         lab_sea: output.fd (switch to AdvScheme=33 with diffKh=20)
1301             output.hb87, output_adm.evp (SEAICEuseFluxForm=T and diffKh=200)
1302             output_adm.noseaicedyn (SEAICEuseFluxForm=T)
1303         offline_exf_seaice: output.seaicetd, output_adm (SEAICEuseFluxForm=T)
1304         seaice_obcs: output (SEAICEuseFluxForm=T)
1305      and prescribe old default for SEAICEuseFluxForm (=F) and DIFF1 (=0.004)
1306          for standard fwd & AD lab_sea tests (to keep the same output).
1307    o pkg/seaice/seaice_growth.F:
1308      - use Ian Fenty's capping formulas for actual ice
1309      thickness thoughout EVOLUTION branch.
1310      - put treatment pathological case #2) in CPP brackets
1311      (ALLOW_AVOID_INFINITESIMAL_AREA, undef by default).
1312      - update global_ocean.cs32x15 and 1D_ocean_ice_colum results accordingly.
1313    o pkg/seaice:
1314      - seaice_diffusion.F : remove the min(DX,DY) factor permanently;
1315      pass the Laplacian diffusivity (in m^2/s) diffKh as a parameter;
1316      also pass fac as a param, which can be 1. (to update the tendency
1317      field) or the time step (to update the field itself).
1318      - seaice_advdiff.F: for multidim, call seaice_diffusion with
1319      e.g. SEAICEdiffKhHeff and with fac=1; for single-dim, call
1320      seaice_diffusion with e.g. SEAICEdiffKhHeff and with fac=time step.
1321      - SEAICE_PARAMS.h, seaice_readparms.F, seaice_check.F :
1322      hooks to handle SEAICEdiffKhHeff, SEAICEdiffKhArea, etc.
1323    o pkg/seaice:
1324      diffusion with centered advection scheme (diffus.F & advect.F):
1325      - simplify S/R DIFFUS (put deltaT & DIFF1 factor outside, move EXCH outside)
1326        to just compute the laplacian of input-field.
1327      - unroll k loop (harmonic,biharmonic diff) in advect.F to save 1 exch call.
1328      - fix flux-form version in diffus.F to conserve tracer.
1329      update output of lab_sea.fd & lab_sea.hb87 (1rst set of modif affects
1330       machine truncation) and lab_sea.salt_plume (conservative flux-form modif)
1331    
1332    checkpoint62y (2011/05/26)
1333    o pkg/seaice:
1334     - seaice_growth.F : in EVOLUTION branch, always include
1335       a_QSWbyATM_cover in qnet (as it should be).
1336     - verification/global_ocean.cs32x15 : update results accordingly
1337       (output.seaice.txt output_adm.seaice.txt).
1338    o pkg/seaice + obcs:
1339     - use maskInW & maskInS in multi-dim advection and biharmonic diffusion:
1340       equivalent of assuming no tracer gradient outside the OB region.
1341       update output of seaice_obcs (uses DIFF1 <>0 => biharmonic diffusion)
1342     - remove calls to OBCS_COPY_TRACER after EXCH calls (no longer needed
1343       after changes above);
1344     - obcs+seaice cleaning: apply seaice-tracer OB values to tracer field
1345       only at OB location (instead of over a band of OLx width).
1346    o pkg/seaice:
1347     - fix wrong indices in old (non Flux-Form) diffusion default S/R diffus.F
1348       (dxG(I+1, ...) changed to dxG(I, ...), no impact on Lat-Lon grid)
1349    o pkg/obcs:
1350      - split header file "OBCS.h" into 4 separated files:
1351        OBCS_PARAMS.h, OBCS_GRID.h, OBCS_FIELDS.h & OBCS_SEAICE.h
1352       Note: OBCS_PARAMS.h & OBCS_GRID.h can be included without OBCS_OPTIONS.h
1353         (contain no conditional statement which depends on OBCS options).
1354      - move "useOBCSYearlyFields" from "data.obcs" (hold in OBCS_PARAMS.h)
1355        to parameter file "data.exf", namelist EXF_NML_OBCS (in EXF_PARAM.h).
1356    o ctrl, cost, grdchk & autodiff pkgs:
1357      - make options file more standard (like other {PKG}_OPTIONS.h file but
1358        with AD_CONFIG.h); clean-up some of the included header files.
1359    o pkg/obcs:
1360      - do not mask tracer when applying OB (tracer == 0 could generate problems)
1361      - apply tracer OB values to tracer field only at OB location (instead of
1362        over a band of OLx width)
1363      - clean-up obcs_apply_w.F & obcs_apply_eta.F (since less calls to these S/R)
1364      - remove OBCS_MULTIDIM_OLD_VERSION code in gad_advection.F and remove
1365        obcs_apply_tloc.F & obcs_apply_sloc.F
1366    o obcs in model/src:
1367      - call OBCS_APPLY_W only if NonHydrostatic.
1368      - call OBCS_APPLY_ETA only if NonLinFreeSurf.
1369      - reset dEtaHdt and wVel to zero outside OB interior region ;
1370      - leave tracer unchanged outside OB interior region: This has no effect
1371        on the solution but just to prevent unrealistic tracer value outside OB.
1372      - zero out velocity outside OB interior region: This has no effect on
1373        the solution but just to prevent unrealistic velocity outside OB.
1374    o obcs and non-lin free-surf:
1375       move call to OBCS_APPLY_R_STAR from update_r_star.F to calc_r_star.F
1376       and call to OBCS_APPLY_SURF_DR from update_surf_dr.F to calc_surf_dr.F
1377       + add argument "etaFld" to OBCS_APPLY_R_STAR & OBCS_APPLY_SURF_DR:
1378       this fixes missing EXCH + get consistent eta OB value (+ fix restart).
1379       update results of test-exp. exp4(nlfs).
1380    o exp4 (nlfs) test-exp:
1381       use OBC for Eta at Western & Eastern OB (to test prescribing Eta
1382       with NonLin-FreeSurf); update output.nlfs.txt
1383    o obcs and 2d/3d solver norm:
1384       use interior masks (maskInC) to cancel out cg2d & cg3d matrix coeff at OB
1385       and outside OB interior region (will allow to place OB further inside the
1386       domain). Depending on the domain, can affects cg2d-Norm (previous
1387       cancellation outside OB was only partial), e.g. in exp4 & obcs_ctrl,
1388       and cg3d-Norm (previous Norm was computed before canceling OB terms),
1389       e.g. in tutorial_plume_on_slope.
1390      - update output of exp.: exp4 (x2), obcs_ctrl and tutorial_plume_on_slope.
1391    o pkg rbcs:
1392      - split RBCS.h into 3 files: RBCS_SIZE.h, RBCS_PARAMS.h & RBCS_FIELDS.h
1393      - add capability to apply relaxation to horizontal velocity uVel & vVel.
1394    o pkg/grdchk: add gradient check for control variable xx_shifwflx
1395    o pkg/shelfice/shelfice_init_fixed.F
1396      fix CPP-flag combinations
1397    o pkg/seaice: Merge iceage code of Pierre Rampal
1398      * update/change/correct ice age calculations
1399      * add age updates for pathological cases
1400      Probably needs more testing...
1401    
1402    checkpoint62x (2011/05/13)
1403    o pkg/mom_vecinv:
1404       high-order vorticity scheme: use interior masks (maskInW & S)
1405       to zero-out (outside OB) gradient of vorticity.
1406    o verification exp.:
1407       turn on "useEnergyConservingCoriolis" (better discretisation) in exp.
1408       hs94.128x64x5 and seaice_obcs ; update results.
1409    o pkg/obcs:
1410      fix bug in OBeta for YZ sections in obcs_exf_load.F
1411    o pkg/ctrl, pkg/shelfice, and optim:
1412      - add new control variable xx_shifwflx (fresh water flux underneath ice
1413        shelves). This is almost as tedious as obcs-ctrl, because the
1414        variables needs its own mask.
1415      - add a cost function term that penalizes the deviation of xx_shifwflx
1416        from the first guess (zero) in analogy to other control variables
1417    o pkg/shelfice:
1418      - start basic adjoint
1419    o pkg/ctrl:
1420      - remove extra 2D field "for good measure" when initializing in
1421        ctrl_set_globfld_[xy/xz/yz].F
1422      - replace hard coded precision 32 (a bug) in ctrl_map_ini_gen by ctrlprec
1423      - improve error messages in ctrl_set_unpack_*
1424    o OBC implementation in momentum:
1425       use interior masks (maskInC,W & S) in momentum S/R:
1426       - multiply divergence, tension and some del^i.u or del^j.v by maskInC
1427       - multiply del2u,del2v by maskInW/S (biharmonic viscosity)
1428       - multiply horiz. grad of vorticity by maskInW/S (in Leith scheme)
1429       - multiply gradient of wVel by maskInW/S in del2w calculation (NonHyd)
1430       Motivation: fix/clean implementation of OBC with biharmonic-viscosity
1431        (and also with Leith/Smagorinsky harmonic-viscosity).
1432       Update output of experiment dome and exp4 (+nlfs).
1433    o exp4 test-exp:
1434      - turn on: nonHydrostatic, exactConserv, viscA4 (with momDissip_In_AB=F)
1435        and prescribe time-varying OB (without pkg/exf) for zonal-velocity
1436        at Western & Eastern Boundaries (+/- 1 per-cent); Also prescribe
1437        time-varying OB at Western-side for wVel (NonHyd); update output.
1438      - add secondary set-up (.nlfs) using NonLin FreeSurf (z*) + mom_vecinv
1439        and biharmonic-viscosity ; also use prescribed time varying OB.
1440    o pkg/obcs:
1441      fix bug in OBWeta,OBWeta indices in obcs_apply_r_star.F
1442    o model/src:
1443      - fix startTime setting when baseTime<>0 & nIter0=0 are specified ;
1444      - initialise startTime & nIter0 with unlikely values: allows to set one
1445        from the other without ambiguity.
1446    o seaice_obcs test-exp.:
1447      add small diffK4T,S to test biharmonic diffusivity with OBCS ; update output.
1448    o pkg/obcs:
1449      - remove calls to OBCS_COPY_TRACER after EXCH for T,S & pTracer:
1450        no longer needed with maskInC,W,S in pkg/generic_advdiff.
1451    o pkg/seaice:
1452      - retired SEAICE_SALINITY and SEAICE_salinity in favor of
1453        SEAICE_VARIABLE_SALINITY and SIsalFRAC, respectively.
1454      - fixed bug in the initialization of sea ice salinity variable HSALT
1455        in seaice_init_varia.F  (removed dependence on ICE2WATR)
1456    o fizhi-cs test exp.:
1457       switch reference output convention for these 2 non-standard test-exp,
1458        from: pgi  6.1-5 on faulks (FC.6, -of linux_ia32_pgf77+authors_fc5)
1459          to: ifort 11.1 on baudelaire (FC.13, -of linux_amd64_ifort11)
1460       reason: faulks might get retired soon and pkg/fizhi has still Pb with gfortran
1461    o model/inc:
1462      - change type of PmEpR array (from _RS to _RL) to fix restart (with "-use_r4")
1463        of exp. global_ocean.90x40x15 (Suncronous time-stepping + Real-FW + NonLin-FS)
1464    o pkg/seaice:
1465      - fix calculation of saltFlux and saltPlumeFlux when using SEAICE_SALINITY
1466    o verification/lab_sea, 1D_ocean_ice_column, seaice_obcs, global_ocean.cs32x15
1467      - updated output*.txt files due to bug fixes in salt, saltPlumeFlux,
1468        and initial HSALT
1469    
1470    checkpoint62w (2011/04/26)
1471    o pkg/mom_fluxform:
1472      - fix calculation of del2u & del2v (no-slip BC) when using Non-Lin Free-Surf.
1473      - use parameter "sideDragFactor" in no-slip BC side-drag part.
1474      - update output of exp. global_ocean.90x40x15
1475    o pkg/mom_vecinv:
1476      mask del2u & del2v (no effect on results, but cleaner & closer to mom_fluxform)
1477    o update seaice exp.:
1478      use more consistent parameter values (remove "backward compatability only":
1479       ICE2WATR, SEAICE_lhSublim, SEAICE_cpAir, SEAICE_rhoAir + set rhoConstFresh)
1480      related to thermodynamics seaice. Update output (fwd+AD) of exp.:
1481       1D_ocean_ice_column (x2), lab_sea (x8), ioffline_exf_seaice (x2) & seaice_obcs
1482    o update test-exp global_ocean.90x40x15:
1483      o use default CD_CODE_OPTIONS file (Adams-Bashforth on CD Mom & Coriolis).
1484      o increase Overlap size from 2 to 3 (to allow to test bi-harmonic Visc.)
1485      o new pickup-files from a 100.yr run with pkg/down_slope (input.dwnslp params)
1486      o turn on zStar & viscA4 in standard set-up (dir input/)
1487        and update output files: output.txt & output.dwnslp.txt
1488    o new AD-test experiment: obcs_ctrl
1489      (From Matt MITgcm_Contrib/SOSE/BoxAdj) to test OBCS as control vector.
1490    o pkg/dic:
1491      fix two bugs in handling water vapour pressure in carbonate chemistry
1492      and air-sea fluxes. Found by Val Bennington and Galen McKinley
1493      (add DIC Option = WATERVAP_BUG to recover old results)
1494      update output of tutorial_global_oce_biogeo (fwd+AD) & tutorial_dic_adjoffline
1495    o adding allowInteriorFreezing option to check for water below freezing point
1496      at depth and bring the negative heat anomaly to the surface level
1497    o pkgs _fields_load:
1498      - extend GET_PERIODIC_INTERVAL to deal with non-periodic case (from pkg/rbcs)
1499      - use new S/R GET_PERIODIC_INTERVAL in pkgs:
1500        bulk_force, cheapaml, cfc, dic, obcs (+ ctrl/ctrl_get_gen_rec), offline and
1501        rbcs to get interpolation weights and time reccord number.
1502      - fix multi-threading in aim_fields_load.F
1503      - apply EXCH to temp arrays [0,1] after reading in dic_fields_load.F
1504    o external_fields_load:
1505      new S/R GET_PERIODIC_INTERVAL to calculate which time-record (and linear
1506       interpolation weights) to use in a periodic time-series ; do not divide by
1507       time-step to convert to integer:
1508       - this fixes case where externForcingPeriod is not multiple of time-step
1509          (Thanks to Christopher L. Wolfe)
1510       - this fixes case where externForcingPeriod is an odd multiple of time-step
1511         (was wrong by half of time-step); update results of tutorial_global_oce_in_p.
1512      store index of time-record which is currently loaded:
1513       - works without any assumption on sequence of calls to EXTERNAL_FIELDS_LOAD ;
1514       - needed for the adjoint but not yet used because of extensive recomputations;
1515         (to be fixed soon)
1516    
1517    checkpoint62v (2011/04/02)
1518    o verification/1D_ocean_ice_column added to test Ian Fenty's
1519      pkg/seaice_growth.F modifications for improving sea ice code differentiability
1520    o update output of exp4, internal_wave, seaice_obcs, tutorial_plume_on_slope
1521      (new velocity statistics after changing maskInW & maskInS definition)
1522    o pkg/generic_advdiff with OBCS:
1523      use maksInW & maskInS in advective flux and in biharmonic diffusion calculation:
1524      equivalent to assumption of no tracer gradient outside the OB region.
1525      This will affect the results if using obcs+biharmonic diffusion.
1526      update output_adm.txt of experiment bottom_ctrl_5x5 (not expected since no obc)
1527    o pkg/obcs:
1528      change definition of maskInW & maskInS: leave OB edges inside (maskIn=1)
1529      (e.g., maskInW(OB_Ie)=1 ) so that velocity normal-component at OB is still
1530      in Interior region. No impact on solution but affects Velocity monitor stats.
1531    o pkg/ptracers (adjoint)
1532      New option AUTODIFF_PTRACERS_SPLIT_FILES for writing separate
1533      tape file for each tracer
1534    o model/inc/src and pkg/autodiff: add parameters that allow to turn
1535      of parts of the adjoint code at run time. For now, there are only
1536      useKPPinAdMode, useGMrediInAdMode, and useSEAICEinAdMode. These
1537      parameters are set in data.pkg.
1538      This is the lazy coward's version of doing this, but still useful for
1539      debugging. In order to do it right, everything needs to be moved to
1540      pkg/autodiff.
1541    o pkg/autodiff: fix global_sum_tile_ad.F by resetting adsumPhi at
1542      the end; this fixes the adjoint balancing code for open boundaries.
1543    o pkg/ctrl:
1544      - change behavior of xx_${varname}period to be analogous to exf-conventions:
1545        xx_${varname}period =   0.,  means time-independent control part
1546        xx_${varname}period = -12., means one-year-periodic monthly control part
1547      - introduce helper routine ctrl_init_rec (part of ctrl_init.F) to
1548        clean up ctrl_init a little, remove unused variables
1549      - ctrl_init: fixed the handling of the start/endrec for obcs-variables
1550      - move "call cal_GetMonthsRec" from s/r ctrl_get_gen to s/r ctrl_get_gen_rec
1551    
1552    checkpoint62u (2011/03/15)
1553    o model/src:
1554      - for the adjoint, change NonLin-FreeSurf initialisation sequence: fill-in
1555        h0Fac from INITIALISE_FIXED and reset hFac to h0Fac in INITIALISE_VARIA ;
1556      - in initialise_varia.F (except for ALLOW_DEPTH_CONTROL) remove 2nd call to
1557        INI_DEPTHS, INI_MASKS_ETC & INI_LINEAR_PHISURF.
1558    o pkg/ctrl/obcs/ecco:
1559      - remove obsolete, unused, and partially broken code:
1560        ctrl_obcsvol/ctrl_obcsbal/ctrl_volflux and code within
1561        ALLOW_CTRL_OBCS_BALANCE
1562      - put a stop statement into ecco/cost_obcsvol.F, but also add
1563        cost_obcsvol to ecco_ad_diff.list
1564    o pkg/ecco: fix counting cost function contributions for obcs (code
1565      by Matt M.) and diffkr for diagnostics
1566    o pkg/ecco, pkg/ctrl, pkg/grdchk:
1567      add cost penalty terms for initial uvel, vvel, eta controls
1568      and I/O for prior error files
1569    o pkg/mdsio:
1570       move mds_check4file.F from eesupp/src to mdsio_check4file.F ; add option
1571       (new argument) to check for tiled file in mdsioLocalDir : this fix the
1572       restart from pickup_som , pickup_dic (& dic_co2atm) with mdsioLocalDir.
1573    o pkg/ctrl:
1574     - ctrl_obcsbal.F, ctrl_obcsvol.F: replace last calls of ctrl_getrec by
1575       ctrl_get_gen_rec, put a stop statement into ctrl_getrec. Remove
1576       unused and superfluous variables
1577     - ctrl_get_gen_rec.F: catch the case of xx_genperiod=0.
1578    o pkg/ecco
1579     - enable adjoint of Stevens OB
1580    o pkg/ctrl/ecco/grdchk:
1581      - remove global declaration of tmpfldx/yz and tmpfldx/yz2.
1582        Fortunately, we do not have any tests for the numerous cpp-flagged
1583        option of "obcs as control parameters" so we will never know
1584        if this is an improvement (but at least now things compile).
1585      - remove an obsolete initialization from ecco_cost_init_barfiles.F
1586      - fix some problems within never used ifdefs to make the code compile
1587    o pkg/obcs:
1588     - Refine Interior mask definition to work with more complex OB (e.g.
1589       if OB_Ie < OB_Iw); In case default setting is not sufficient, allows to
1590       read in Interior mask from file. Check if Interior mask is consistent
1591       with OB list of indices.
1592    o pkg/seaice
1593     - beginning code for a seaice tracer package,
1594       but currently only used for seaice age: SEAICE_AGE
1595       SEAICE_num = 4
1596       iTracer = 1: area-weighted ice age
1597               = 2: volume-weighted ice age
1598               = 3, 4: template for one-year vs. multi-year ice
1599       data.seaice has new namelist SEAICE_PARM03 for arrays related to
1600       SEAICE_num
1601    
1602    checkpoint62t (2011/03/05)
1603    o pkg/obcs:
1604     - obcs_apply_uv.F: change to a 2 steps method, first tangential component;
1605       then normal component. This ensures that the normal component is set
1606       correctly even when it conficts with tangential setting from an other OB.
1607       Affects results of test-experiment seaice_obcs: update the output.txt
1608    o pkg/obcs:
1609     - add code to monitor statistics of dynamical fields at OB.
1610     - take OBCS_BALANCE code out of obcs_calc.F into new S/R OBCS_BALANCE_FLOW :
1611       - fix to OBCS_BALANCE code (right hFac ; deal with simple OB intersection).
1612       - change default: balance the Net inflow through all OB (instead of balancing
1613         each OB separately); keep the old method if setting OBC_balanceFacX < 0.
1614     - switch on useOBCSbalance in dome experiment: only correct Western OB outflow
1615       to match Nortern OB inflow (OBCS_balanceFacN=0).
1616    o pkg/seaice:
1617     - redefined actual sea ice age to be ICEAGE/HEFF ifdef SEAICE_AGE_VOL
1618    o pkg/seaice (seaice_growth v 1.113):
1619     - reverting seaice_growth to v 1.111 in order to have code with exact bit
1620       compatibility with MITgcm_contrib/ifenty/Fenty_seaice_thermo_code_merge
1621       CPP option SEAICE_OCN_MELT_ACT_ON_AREA removed in v 1.112 is reintroduced
1622       runtime flag SEAICEareaFormula is kept but is inactive
1623    o model/src:
1624     - add new param to scale curvilinear grid distance and area when using
1625       a different sphere radius from the grid-files.
1626     - test/check multi-threads EXCH applied to local variable (cg2d_x)
1627    o adjoint:
1628     - enable adjoint of Stevens OB
1629     - add dummy_in_dynamics to enable extraction of ADJrhoinsitu
1630       (a bit delicate because of potentially modified adj. common block structure;
1631       current switch is ALLOW_AUTODIFF_MONITOR_DIAG, could be changed later)
1632    
1633    checkpoint62s (2011/02/15)
1634    o pkg/seaice (seaice_growth v 1.112):
1635     - introduce SEAICEareaFormula run time parameter, which selects the recipe for
1636       computing the ice cover tendency from effective thickness tendencies. Include
1637       Ian Fenty's formula.
1638     - remove 'undef SEAICE_OCN_MELT_ACT_ON_AREA' which may now be achieved using
1639       SEAICEareaFormula.
1640     - simplify notations for the various d_HEFF/d_AREA terms.
1641    o pkg/gmredi:
1642     - add Boundary-Value-Problem bolus transport (Ferrari etal, OM 2010) code
1643       from Christopher Wolfe (UCSD); add partial cell factor in vertical derivative;
1644       add a verification test-run (front_relax.bvp) to test GM_useBVP.
1645    o pkg/seaice (seaice_growth v 1.111):
1646     - for SEAICE_DO_OPEN_WATER_GROWTH, replace Gael's implementation with Ian's.
1647     - the new SEAICE_DO_OPEN_WATER_MELT allows open-water air-sea heat fluxes to
1648       also melt ice.
1649    o pkg/seaice:
1650     - McPhee formula for Ice-Ocean fluxes (provided by Ian Fenty).
1651     - can be used by #define MCPHEE_OCEAN_ICE_HEAT_FLUX in SEAICE_OPTIONS.h
1652    o pkg/cheapaml:
1653     - from Nico Wienders: New version of this package.
1654    o pkg/flt:
1655     - add CPP options to prevent floats to re-enter the opposite side of
1656       a periodic domain (default: keep periodicity)
1657    o pkg/gmredi:
1658     - apply exchange to GM_PsiX,GM_PsiY to get valid values near CS-corners
1659       (needed for multi-dim advection).
1660     - switch on GM Advective form in global_ocean.cs32x15 and update output.txt
1661    o model/src:
1662     - fix wrong re-setting of addMass array (ALLOW_ADDFLUID) for atmospheric run.
1663    o tutorial_tracer_adjsens
1664     - extend to NLFS and replace maskC by hFacC
1665       (change reference output accordingly)
1666    
1667    checkpoint62r (2011/01/24)
1668    o testreport:
1669     - add option -deloutp (-do) to remove output file after successful run
1670     - add option -mfile (-mf) for MPI machile-file and for each test-exp,
1671       extract exact list of procs from this file ; adjust COMMAND by
1672       replacing TR_MFILE & TR_NPROC with local machile-file & Nb of MPI procs.
1673    o pkg/ecco: replace old ineffective way of penalizing deviations from
1674      first guess (of obcs) with code by Matt Mazloff
1675    o pkg/ctrl: add code that allows the use of ALLOW_OBCS?_CONTROL without
1676      exf/cal
1677      - ctrl_init: fix initialisation (computation of diffrec) for obcs-ctrl
1678        and handle case of obcs?period == 0
1679        Not affected by these changes: There is still an inconsistency in
1680        the computation of start/endrec for the obcs variables for ALLOW_CAL
1681        defined (see comment by Menemenlis, 7-Mar-2003)
1682      - make S/R ctrl_get_gen_rec return something meaningful even if
1683        ALLOW_CAL is not defined
1684      - ctrl_getobcs?: simplify code so that it does not need to use
1685                       S/R exf_swapfields
1686    o testreport:
1687       allow to test MPI with different number of processors for each experiment:
1688       create file "SIZE.h.mpi" in each build dir.
1689       Note: update of "-command" argument not yet implemented.
1690    o model/src, pkg/autodiff, pkg/ecco, pkg/seaice:
1691      alleviate the need for additional 3D tapes when using
1692      the non-inear free surface in the adjoint. This is done
1693      by adding an 'update' of hfacc etc. to their current
1694      value at the beginning of forward_step.F.
1695    o pkg/seaice
1696      seaice_lsr: move stress-divergence computations out of outer pseudo-
1697      timestepping loop
1698    o pkg/obcs/obcs_prescribe_read.F: move 'CALL OBCS_EXTERNAL_FIELDS_LOAD'
1699      up, so that the calls of the ctrl_* subroutines are really at the end
1700      of the routine.
1701    o pkg/gmredi:
1702      allow to specify a 2-D horizontal map and a 1-D vertical profil
1703      as scaling factor for Isopycnal diffusivity (Redi) and GM diffusivity.
1704    o pkg/seaice:
1705      move lsr iterations from seaice_dynsolver to seaice_lsr.
1706    o pkg/seaice:
1707      reduce memory footprint of seaice mutldim advection tapes,
1708      by using a 2D tape independent of the generic_advdiff ones,
1709      and setting GAD_AREA=1 etc. rather than GAD_AREA=101 etc.
1710    
1711    checkpoint62q (2010/12/29)
1712    o model/src:
1713      - check horizontal grid-spacing for unset or zero/negative values.
1714      - change AD test hs94.1x64x5 to be truly a 2-D set-up.
1715    o pkg/flt:
1716      - use (recent) mdsio S/R MDS_READVEC_LOC instead of local FLT_MDSREADVECTOR
1717      - precision of input and output files set according to readBinaryPrec
1718        and writeBinaryPrec (previously always 64.b), pickup remains at 64 bits.
1719      - initial float position from tiled file was not converted to index space
1720        (looks like a bug): fixed to make it similar to initial pos. global file.
1721    o global_ocean.cs32x15:
1722       change SIZE.h of AD set-up to get same tiling as with MPI.
1723       Update output_adm, output_adm.thsice (pass@14) & output_adm.seaice (fail@11)
1724    o model/src:
1725       add flag to control printing of domain fields (bathymetry, hFac ...) in
1726       ini_mask_etc (call to plot_fieds_xy*).
1727    o pkg/thsice:
1728       if useEXF, some forcing fields are not valid in overlap: fixed by computing
1729       over the interior only + apply EXCH at the end (like with SEAICE advection).
1730    o pkg/mdsio:
1731      - add 2 arguments to S/R MDS_PASS_R4/8toRL/S for overlap size of buffer
1732        to copy to/from, so that it can be used to replace MDS_PASS_WH_R8toRL/RS.
1733      - change barrier call for safe multi-threads access to 3-D shared buffer.
1734      - MDS_READ/WRITEVEC_LOC use buffers from MDSIO_BUFF_3D.h (instead of local ones)
1735      - replace call to MDS_PASS_WH_R4/8toRL with call to MDS_PASS_R4/8toRL and
1736        remove the 4 S/R MDS_PASS_WH_R4/8toRL/S.
1737    o pkg/flt:
1738      - add fourth-order Runge-Kutta integration
1739      - add basic exch2 support (only 1 facet supported so far!)
1740    o pkg/mdsio+rw:
1741      new S/R to read local (or tile independent) vector (read counterpart of
1742       mds_writevec_loc, and front-end write_glvec_rl/rs).
1743    o global_ocean.cs32x15: additional input_ad.seaice experiment
1744        that uses pkg/seaice rather than pkg/thsice.
1745        (using multidim advection for seaice)
1746    o towards more F95 syntax for array specification in namelist:
1747      - change "data.diagnostics" (data.ptracers was changed before checkpoint62p)
1748        of all verification experiments.
1749           e.g.:    line: fields(1,3)='ETAN    ','ETANSQ  ',
1750          was changed to: fields(1:2,3)='ETAN    ','ETANSQ  ',
1751      - finish adding "-DNML_EXTENDED_F77" to DEFINES list in pgf77 and g77 optfiles
1752    o global_ocean.cs32x15: additional input.seaice experiment
1753        that uses pkg/seaice rather than pkg/thsice.
1754    
1755    checkpoint62p (2010/12/17)
1756    o pkg/thsice: rename (ad tape index) iicekey as ticekey, and move it
1757        to THSICE_SIZE.h to avoid conflict with pkg/seaice.
1758    o pkg/seaice: add seaice_diffusion.f seaice_map_thsice.f to adjoint.
1759        allow for use of multim. advection in seaice adjoint.
1760    o pkg/seaice: add diagnostics for snow precipitation and sublimation flux
1761      - first attempt to close budgets by taking into account the freshwater
1762        flux implied by the sublimation of snow and ice. So far only the
1763        volume budget is closed, turn on with soon-to-be-retired-again CPP-Flag
1764        SEAICE_ADD_SUBLIMATION_TO_FWBUDGET
1765    o eesupp/src:
1766      new S/R with new option (NML_EXTENDED_F77) to change array specification
1767      from F95 standard to commonly accepted extended F77 form.
1768      This would allow to use F95 syntax in namelist (needed with gfortran 4.4.5)
1769      and to revert back to the original syntax (with -DNML_EXTENDED_F77)
1770      for less tolerant f77 compiler (e.g., pgf77, g77).
1771    o globalFiles:
1772      commented out in parameter file "data" since it's not safe with MPI
1773      (e.g., wrong on aces); keep it if useSingleCpuIO=T (but not doing much
1774      in this case); no longer commented out in restart test (tst_2+2).
1775    o add adTapeDir to specify a special directory where adjoint tapes are
1776      written/read (adread_adwrite.F). adTapeDir is specified in data/PARM05
1777      and cannot be used together with mdsioLocalDir.
1778    o nesting pkgs:
1779      - packages_init_variables : put call to OBCS_INIT_VARIABLES in last position
1780      - update Gianmaria's Nesting pkgs (from Contrib/nesting_sannino)
1781      - add parameter files + utils dir + output from short run on beagle.
1782    o pkg/seaice:
1783        fix seaice_growth.F store directives; update results of exp. lab_sea.ad
1784    o pkg/seaice: explicitly store tsurfloc in seaice_solve4temp.F to avoid
1785      unnecessary copying in adjoint code, requires new parameter NMAX_ITER
1786    
1787    checkpoint62o (2010/11/25)
1788    o pkg/exf:
1789      - change CPP option EXF_VERBOSE to run-time logical param exf_verbose.
1790    o pkg/seaice:
1791      - seaice_ocean_stress: split a loop for better vectorization of the
1792        adjoint code
1793      - seaice_growth.F: fix bug in conservation of freshwater connected to
1794        capping of heff, put contribution into d_HEFFbyNEG
1795      - replace irritating parameters SEAICE_latentWater/Ice and SEAICE_sensHeat
1796        by something more sensible (parameters that are what their name implies)
1797      - change some defaults, so that by default exf-parameters are used for
1798        things like rhoAir, cpAir,latent/sensible heat parameters, in order
1799        to reproduce the old results, many data.seaice now contain funny values
1800        for cpAir and latent heat of sublimation
1801    o packages_readparms.F: move exf_readparms up in line so that
1802        exf-parameters are visible for other packages (e.g. seaice)
1803    o debugMode & debugLevel=2:
1804      - differentiate between debugMode & debugLevel=2:
1805        debugMode: controls printing of debug messages (sequence of S/R calls).
1806        debugLevel: controls printing of algorithm intermediate results and stats.
1807      - remove "if debugLevel=2 => debugMode" but keep "debugMode =>  debugLevel=2";
1808        => allows to print debug-stats without all sequence of call messages.
1809      - switch control of debug print from debugLevel to debugMode in many S/R.
1810    o pkg/obcs (obcs-sponge):
1811        fix bug that was introduced on Oct 25 (in dynamics.F v1.151): put back the
1812        call to OBCS_PRESCRIBE_EXCHANGES (need to exch gU,gV when using obcs-sponge)
1813    o pkg/generic_advdiff:
1814      - record overlap minimum size for each advection scheme;
1815      - refine criteria on overlap minimum size;
1816      - check and stop (in gad_check) if overlap size is too small.
1817    o pkg/obcs:
1818      - with ptracers: remove multiple calls to obcs_apply_ptracer (only done
1819        once, in ptracers_implicit.F)
1820      - with seaice: remove test on empty file name in obcs_apply_seaice (always
1821        apply OB values when tile has OB)
1822    o model/src, coriolis setting:
1823      - integer parameter "selectCoriMap" (=0,1,2) replaces 3 logical
1824        useConstantF, useBetaPlaneF, useSphereF ; can now read coriolis from
1825        files (selectCoriMap=3) with any grid.
1826      - add parameter "fPrime" for constant second Coriolis coeff (default=0).
1827    o pkg/seaice/seaice_growth.F:
1828        a few cosmetic changes that reduce the number of lines of code
1829    o pkg/obcs: add boundary conditions following Stevens (1990)
1830      - the code follows old MOM/NAOSIM code
1831      - so far it is only implemented for the eastern and western boundaries
1832        and NOT for pTracers
1833    o pkg/rbcs:
1834      - replace rbcsInIter by rbcsForcingOffset, the time in seconds at the
1835        beginning of the first rbcs forcing period.
1836      - add option rbcsSingleTimeFiles that makes rbcs read forcing data like the
1837        offline package, i.e., one file per time, labeled by iteration number;
1838        deltaTrbcs sets the timestep with which the data was generated;
1839        rbcsIter0 is the forcing iteration corresponding to rbcsForcingOffset.
1840      - rbcsForcingCycle=0 makes forcing non-cyclic.
1841      - make arithmetic safe for negative times and odd forcing periods.
1842    
1843    checkpoint62n (2010/11/09)
1844    o pkg/seaice:
1845        fix masking in free-drift S/R ; update results of exp. lab_sea.fd
1846    o pkg/obcs:
1847       New S/R to copy tracer value from the OB location to narrow band region
1848        (width = same as overlap) beyond the OB: preserve OB value (needed for
1849        high-order scheme) which were overwritten by EXCH call if in overlap
1850        region. Applied to theta, salt, ptracer and advected seaice variables.
1851       With seaice: use maskInC in similar way as in gad_advection.F,
1852        in seaice_advection.F and advect.F.
1853       Update output of experiment seaice_obcs and change exp4 to test OBCS with
1854        4th order Adv.Scheme. for pasive salt and ptracer.
1855    o tools/genmake2:
1856      - when looking for an optfile (not specified), only search for Fortran compiler
1857        (remove sym-link test + setting of CPP + makedepend check + C-compiler check)
1858      - in get_fortran_c_namemangling: use "$CC $CFLAG" to compile C test programm
1859        (instead of "$MAKE genmake_test.o" since an existing Makefile can be wrong)
1860      - set default for CPP to "cpp -traditional -P" (was the case without specifying
1861        an optfile, but otherwise default was just "cpp".
1862      - comment out PLATFORM=$p_PLATFORM (no idea where p_PLATFORM comes from)
1863      - when "CC" is not set in the optfile, look for possible C compiler
1864        (instead of just setting CC=cc)
1865      - put back version v.169 modif (from 2008/02/15), was dropped in v.173 changes:
1866        => add a ".F" to ".o" rule for source files with no "#include" (such as
1867           port_rand.F); otherwise, default ignores FOPTIM and just uses FFLAGS.
1868      - move gfortran before g77 in list of possible Fortran compiler (consistent
1869        with reference compiler switch from g77 to gfortran)
1870    o pkg/seaice:
1871      o remove SEAICE_OLD_AND_BAD_DISCRETIZATION-code, add a test to
1872        seaice_check that stops the model, when the CPP flag is used.
1873      o seaice_growth.F: make capping of ice volume conserving by returning the
1874        capped ice as freshwater to EmPmR. This does not change the verification
1875        experiments but will change runs where the capping is acutally active
1876    o change reference platform+compiler from faulks+g77 to baudelaire+gfortran
1877      (except the 2 fizhi test exp.); update output of exp.: bottom_ctrl_5x5,
1878         global_ocean.cs32x15 (icedyn, thsice, AD thsice), global_ocean_ebm (AD),
1879         lab_sea (fd, hb87, salt_plume), MLAdjust (3/5) and vermix (dd)
1880    o tools/genmake2:
1881      - merge genmake_warnings & genmake_errors into 1 log file: "genmake.log")
1882      - change DUMPSTATE default to false (can use "-ds" option to switch it to T)
1883      - clean previous genmake log files before anything else.
1884      - change Makefile to remove testreport log files (*.tr_log) and genmake log
1885        files only with "CLEAN" target (instead of "Clean");
1886    o pkg/generic_advdiff:
1887      Change OBCS in multiDim advection (gad_advection.F):
1888       Use maskInC to prevent intermediate update of tracer-field in OB regions,
1889       thus keeping current-time-step OB values; and remove the call to OBCS_APPLY
1890       which were applying future time-step OB values.
1891      This way, all explicit calculations use current-time-step OB values
1892       (simpler and more consistent).
1893      Affects results when set-up uses time-varying OBC and multi-dim advection;
1894       update output of experiment seaice_obcs.
1895    o pkg/seaice:
1896      move OPTIONS (formerly locally defined) to SEAICE_OPTIONS.h:
1897       this includes SEAICE_GROWTH_LEGACY (+ SEAICE_DO_OPEN_WATER_GROWTH &
1898         SEAICE_OCN_MELT_ACT_ON_AREA ) and SEAICE_SOLVE4TEMP_LEGACY.
1899      Default (pkg/seaice/SEAICE_OPTIONS.h) is to define SEAICE_SOLVE4TEMP_LEGACY
1900       but leave SEAICE_GROWTH_LEGACY undef ; For now, keep verification exp
1901       unchanged (SEAICE_GROWTH_LEGACY defined in */code*/SEAICE_OPTIONS.h)
1902    o pkg aim (2010/10/26):
1903      - Introduce ALLOW_INSOLATION, moving toward a more general incoming solar radiation
1904        formulation with obliquity, eccentricity, ... as run-time parameters,
1905      - Introduce diagnostics for top-of-the-atmaophere incoming solar radiation and
1906        upward shortwave radition at the surface (all-sky and clear-sky).
1907    o pkg/obcs:
1908      - writing sections with globalFiles=T does not work: switch to tiled-files
1909        when writing sections for OBCS (change pkg/rw/write_rec.F accordingly).
1910      - fix index bug (OB_Ie -> OB_Iw_) in obcs_apply_uvice.F
1911      - apply OBCS_SEAICE_COMPUTE_UVICE to both uice and vice at all obcs
1912    
1913    checkpoint62m (2010/10/21)
1914    o pkg/seaice: vectorize seaice_solve4temp.F
1915      - move iterations loops outside of i/j-loops
1916      - requires 2D arrays for TB and effConduct
1917      - add 2D iceOrNot to replace HICE_ACTUAL.GT.0, as HICE_ACTUAL is
1918        modified in this routine
1919      - a little bit of clean up, adjusting indentation, etc.
1920      - replaced a few TEN**a by exp(a*log(10.)) in new code for better
1921        performance and '**TWO' by '**2' (because TWO is a float),
1922        replaced ONE, ZERO
1923    o eesupp/src:
1924       fix flow dir for exch1_z_RX_cube, exch1_uv_RX_cube & exch1_bg_RX_cube
1925    o pkg/seaice/seaice_growth.F
1926      Revision 1.89 of seaice_growth.F completes the overall october 2010 revision and
1927      merging process. The merged routine has two branches, and one activates the 'evolution'
1928      branch by setting SEAICE_GROWTH_LEGACY to undef (at the top of the routine for now).
1929      In summary, here is what the '10/10 revision' did consist of
1930        part 1: seaice_growth.F revisions 1.71 to 1.75
1931          - Preliminary seaice_growth.F clean-up, keeping test results strictly unchanged.
1932            The emphasis here was on improving readability (e.g. by trying to use meaningful
1933            variable names) and modularity (e.g. by adding arrays to store heff etc. updates).
1934        part 1.5:
1935          - revising the lab_sea experiment to make it a more useful (i.e. stable
1936            and representative of an actual model run). This was done by generating a
1937            (winter) pickup to start from, switching back the main experiment dynamic
1938            solver from evp to lsr, having one of the experiments use the free drift solution.
1939        part 2: seaice_growth.F revisions 1.76 to 1.85
1940          - Sorting out hard-coded constants that prevented heat and fresh water conservation.
1941          - Sorting out the various fields units and sign (set early on and reset at the end)
1942            to avoid numerous scalings/re-scalings. By v1.85 the basic unit for ice, heat and
1943            fresh water stock is 'effective ice meters', and >0 implies more ice/snow.
1944          - Using tendency terms arrays (d_HEFF* etc.) to alleviate remaining code locks,
1945            and simplifying logical expressions to further improve readibility.
1946        part 3: seaice_growth.F revisions 1.86 to 1.89
1947          - Re-organize the blocks of code more logically.
1948          - Merging the '_if.F' pieces that add something new.
1949    o pkg/thsice:
1950      - vectorize thsice_solve4temp and thsice_get_exf.
1951        Problem: thsice_solve4temp has an unvectorizable statement that
1952        might also be problematic for TAF
1953      - thsice_get_exf: add the ALLOW_BULK_LARGEYEAGER04 CPP-flag. This
1954        does not change the verifcation experiment, but will change all
1955        experiments that have this flag undefined (not tested in verification);
1956        a little reorganization to save a few 2D fields and recomputations
1957      - 1st step of revisiting thsice adjoint (major recomp. sorted out)
1958      - 2nd step:  fix some store dirs
1959        o seems to work somewhat, i.e. using ifort but not g77
1960        o likely cause are incomplete init. or recomputation
1961        o start verification/global_ocean.cs32x15/input_ad.thsice
1962    o pkg/obcs: add support for exch2
1963      - the position of the boundary and prescribed values are specified using
1964        a global domain with exch2 facets stacked
1965        - in x for N,S boundaries (like W2_mapIO=-1)
1966        - in y for E,W boundaries (so E,W boundaries do not overlap)
1967    o pkg/mdsio: add support for writing global sections with exch2
1968        file layout is as for obcs described above:
1969        - for x-z sections, facets are stacked in x (like W2_mapIO=-1)
1970        - for y-z sections, facets are stacked in y
1971    o pkg/thsice:
1972       - change a few routines for better vectorization: thsice_albedo.F,
1973         thsice_step_temp.F, and in thsice_calc_thickn.F. Results are
1974         not affected, but in particular the latter routine has changed
1975         dramatically (not necessarily easier to read now).
1976       - re-arrange calculation in THSICE_SOLVE4TEMP: move outside of i,j loops
1977       iteration loop and call to S/R THSICE_GET_BULKF & THSICE_GET_EXF.
1978    o verification/lab_sea:
1979      - overhaul of the forward model experiments. The main motivation
1980        for this revision is that lab_sea has proven quite fragile (when
1981        changing the sea-ice code, and switching platforms) to a point
1982        when failures were very hard to attribute to specific code problems.
1983      - the suspected reason for this fragility is noise amplification by evp so,
1984        to start with, we decided to replace evp with lsr in the main experiment.
1985      - the input.lsr experiment thus became obsolete and was removed.
1986      - it was replaced with the input.fd experiment that uses an
1987        analytical "free drift" solution as the ice velocity field.
1988      - Taken together, input (lsr), input.fd (free drift) and input.hb87 (evp)
1989        will hopefully allow us to discriminate problems due to dynamic solvers
1990        from problems due to the thermodynamic code. input.salt_plume (lsr) allows
1991        us to test additional options, along with the salt plume package.
1992      - Finally a pickup was generated (at the end of a one year run) to
1993        make the tests more representative of an actual model run. Previously
1994        the tests starting point was a 1m thickness of ice everywhere.
1995    o pkg/seaice:
1996      - introducing S\R seaice_freedrift.F that compute the
1997        analytical solution to an approximate ice momentum
1998        equation (i.e. the simple stress/coriolis balance).
1999      - define SEAICE_ALLOW_FREEDRIFT to trigger the computation
2000        of the free drift velocity field, and enable its use.
2001        To actually use the free drift solution as the model ice
2002        velocity field set SEAICEuseFREEDRIFT to .TRUE. in data.seaice.
2003    o move "useOASIS" from PARAMS.h to EEPARAMS.h and read it from "eedata"
2004    
2005    checkpoint62l (2010/10/04)
2006    o pkg/seaice:
2007      -fix the USE_ORIGINAL_SBI version (for variable freezing point);
2008      -use "celsius2K" in SEAICE_VARIABLE_FREEZING_POINT and in new
2009       version (with USE_ORIGINAL_SBI undef);
2010    o add hooks for new packages OASIS, the package will follow
2011      (hooks exclude the seaice pkg for now)
2012    o pkg/autodiff: ALLOW_AUTODIFF_WHTAPEIO
2013      Option to use mdsio_read_whalos.F/mdsio_write_whalos.F,
2014      rather than mdsio_readvector.F/mdsio_writevector.F, within
2015      adread_adwrite.F to read/write adjoint-related tapes to disk.
2016    o eesupp and pkg/mdsio: ALLOW_WHIO
2017      Option to write/read 2D fields to files including tiles halos.
2018      The main purpose is for adjoint related "tape I/O".
2019      The secondary purpose is for debugging phases.
2020      A word on those rather specifically intended purposes.
2021      The code was meant to be stripped down to the bare minimum.
2022      Typically, there is a unique and basic mapping to the global
2023      buffer (tile by tile, then proc by proc, then level by level), and
2024      byteswaps and meta-files are omitted. Indeed the (*_WH*) code is not
2025      meant to generate user friendly outputs of various shapes and forms.
2026      Rather it is intended, for the knowledgeabale developers,
2027      to be largely independent of the many mdsio options, to allow
2028      outputs of tiles+halos in debugging phases and in adjoint runs,
2029      and to allow some flexibility in tuning (adoint) I/O depending on each
2030      file system behavior. With regard to tuning, most of the potential knobs
2031      (to leave files open, to allocate the I/O indep. of usesinglecpuio,
2032      to specify directories, to specify the typical size of I/O calls, etc.)
2033      are not yet included, and will be added if they prove useful.
2034    o pkg/seaice:
2035       fix uninitialised arrays in USE_ORIGINAL_SBI version of seaice_solve4temp.F
2036    o pkg/seaice:
2037       new S/R seaice_solve4temp.F: this is the merged version of Ian Fenty
2038       code (seaice_budget_ice_if.F) which enable to recover old standard
2039       code (seaice_budget_ice.F) when option USE_ORIGINAL_SBI is defined.
2040       temporary: add "#define USE_ORIGINAL_SBI" at the top of seaice_solve4temp.F.
2041    o model/src (rStar):
2042       use simple average (not area weighted) of rStarFac at U,V point when using
2043       vectorInvariant and selectKEscheme=1,3 (consistent with mom. vertical advection)
2044       update output of exp. fizhi-cs-32x32x40 and fizhi-cs-aqualev20.
2045    
2046    checkpoint62k (2010/09/17)
2047    o adjoint
2048       * changed verification/global_ocean.cs32x15 ; adjoint now tests
2049         Adams-Bashforth 3 + NLFS + RSTAR
2050       * some more modifs required for ECCO-GODAE v4
2051    o pkg/seaice
2052       add SEAICE_AGE_VOL option to use volume instead of area for
2053       integrating SEAICE_AGE
2054    o model/src:
2055       first check-in of sigma & hybrid-sigma coordinate code ; also includes
2056       non-linear free-surface parts ; but pressure-gradient not yet coded.
2057    o pkg/ptracers:
2058       option for ptracer to convert Salt Relax into additional EmP.
2059        tested in exp. global_ocean.90x40x15.dwnslp (update output)
2060    
2061    checkpoint62j (2010/08/25)
2062    o pkg/ggl90:
2063       other minor changes: remove 3-D temp array gTKE (+ add argument myIter)
2064    o pkg/dic: car_flux.F, phos_flux.F
2065      - reduce number of exp-calls in order to improve performance
2066      - clean up a little (replace fields by their macros, etc., fix
2067        typo in CPP-flag)
2068    o pkg/ggl90: minor changes
2069      - GGL90diffKrS was removed --> always use GGL90diffKr
2070      - GGL90viscAr was removed --> replaced with GGL90viscArU, GGL90viscArV
2071      - hack of mxlMaxFlag=2 --> ensure mixing between first and second level
2072        (commented out for now)
2073      - change in max/min operations to ensure that smoothing is ok
2074      - smoothing of GGL90viscAr was moved to ggl90_calc.F (as done for GGL90diffKr)
2075      - always use diffKrNrT as background profile (i.e. never use diffKr field)
2076    o pkg/cfc: bug fix, AREA(i,j,1,bi,bj) -> AREA(i,j,bi,bj)
2077    o pkg/dic:
2078      - model/src/impldiff.F: if TARGET_NEC_SX, extend loop ranges for better
2079        vectorization
2080      - small bug fix in insol for the unlikely case of a cartesian grid
2081      - towards vectorizing the dic package: bio_export.F, car_flux.F, phos_flux.F
2082        + now vectorize, which also removes adjoint recomputations;
2083        + replace integer maksp1 by _RL maskp1
2084        + replace a**x by exp(x*log(a)) in phos_flux.F for speed
2085    
2086    checkpoint62i (2010/07/21)
2087    o pkg/flt:
2088      - with OBCS: stop floats which enter the OB region
2089    o model/src:
2090      - use tempVertAdvScheme & saltVertAdvScheme (instead of horizontal ones)
2091        for implicit vertical advection.
2092    o pkg/seaice:
2093     - account for melting in seaice age evolution.
2094     - remove double counting of seaice ridging effect on seaice age.
2095    
2096    checkpoint62h (2010/06/18)
2097    o pkg/exch2:
2098     - remove exch2_*xy_rx files: call was replaced with exch2_*3d_rx(myNz=1).
2099    o tools/genmake2
2100      - remove "-pdefault" option: redundant with the use of "packages.conf";
2101      - remove file pkg/pkg_default : set the default as a pkg group
2102        ("default_pkg_list") defined in pkg/pkg_groups;
2103      - fix for case pkg/pkg_depend is missing (was hanging before);
2104      - add option "-pgroups" to specify a different pkg_groups than the default.
2105    o verification/adjustment.cs-32x32x1:
2106       add a "minimal" set-up test (code_min & input_min) which only compiles
2107       eesupp/src and the 2 pkgs (exch2 & debug) which don't need model/src & inc.
2108    o tools/genmake2
2109      - extend pkg_depend rules to model & eesupp (e.g., if model depend on [pkg]))
2110      - fix details of checking for mnc & profile pkg when NetCDF is unavailable.
2111    o pkg/exf: merge exf_bulk_largeyeager04 into exf_bulkformulae because these
2112      files are nearly the same anyway.
2113      Step 1: make exf_bulkformulae look like exf_bulk_largeyeager04:
2114       - redefinition of tau(i,i) (by a factor of ustar)
2115       - 1./exf(Const/T) -> exf(-Const/T) (big change in the results)
2116       - replace rhonil by rhoConstFresh in computation of evap (bug fix)
2117       - replace u/vstress=tau*rd*ws*cw by tau*rd*u/vwind (changes results)
2118       - replace
2119         rd(i,j)= rdn(i,j)/(exf_one - rdn(i,j)/karman*psimh )
2120         shn    = sh(i,j,bi,bj)*rd(i,j)/rdn(i,j)
2121         by
2122         shn    = sh(i,j,bi,bj)/(exf_one - rdn(i,j)/karman*psimh )
2123         (changes results)
2124       -> exf_bulkformulae v1.22,
2125          update verification experiments lab_sea, offline_exf_seaice, seaice_obcs
2126          (lab_sea: output.hb87.txt 1.11, output.lsr.txt 1.25, output.salt_plume.txt 1.13,
2127                    output.txt 1.63
2128           offline_exf_seaice: output.seaicetd.txt 1.7
2129           seaice_obcs: output.txt 1.10)
2130      Step 2: do the actual merge and remove exf_bulk_largeyeager04.F
2131       -> exf_bulkformulae v1.23,
2132          unfortunately requires updating lab_sea.salt_plume (6 matching digits),
2133          and global_ocean.cs32x15.icedyn (only 11 matching digits)
2134      Also update output_adm of exp. lab_sea (all 4) and offline_exf_seaice.
2135    o adjoint of exch-1:
2136     - pass high-level EXCH S/R through TAF (eesupp/src/exch_ad_diff.list)
2137       (note: was already like this when using EXCH-2) and remove flow dir
2138       and hand-written AD version of high-level EXCH S/R (pkg/autodiff);
2139     - provide flow-dir for low-level exch1 S/R (eesupp/src/exch1_ad.flow);
2140     - update pkg/exch2 diff list.
2141    
2142    checkpoint62g (2010/05/19)
2143    o eesupp/src (exch-1):
2144     - split exch_rx.F into Forward S/R (exch1_rx.F) and Adjoint S/R (exch1_rx_ad.F)
2145       and remove argument "simulationMode"; same thing for all exch_*rx_cube.F
2146       (renamed to exch1_*rx_cube.F).
2147     - change accordingly exch_*_rx.template and AD version in pkg/autodiff
2148       to call new exch1 S/R ; update Makefile and .cvsignore.
2149     - replace call to exch2_xy_rx S/R with exch2_*3d_rx(myNz=1) (will remove
2150       exch2_xy_rx later)
2151      Note: after updating your code, need to run "make clean" in eesupp/src
2152    o test experiment bottom_ctrl_5x5:
2153       new output_adm.txt with fewer grdchk & less monitor output.
2154    o model/src:
2155      remove the call to ini_cori in initialise_varia.F (just keep the usual one
2156       in initialise_fixed.F). More consistent with coriolis & horizontal grid
2157       beeing treated in the same way (ini_grid is not called a 2nd time).
2158    o pkg/exf:
2159      - rewrite exf_bulk_largeyeager04.F for better vectorization, changes
2160      global_ocean.cs32x15/input.icedyn (11 digits of agreement), updated
2161      - fix adjoint (used worked for ALLOW_ATM_WIND defined, works for this now)
2162      - cosmetic changes to exf_bulkformulae.F to make it look more like
2163        exf_bulk_largeyeager04.F
2164    o eesupp/src (exch-1):
2165      - Fix AD EXCH code for 2-D domain special cases (Nx=1 or Ny=1).
2166      - Separate buffer filling and MPI sending: allow EXCH-1 to work for local
2167        array (non-shared) when using MPI+MTH. Also reduces number of BARRIER
2168        (even without using MPI).
2169      - Message mode: move RecvAck setting (indicator of buffer being ready)
2170        from send_put to recv_get S/R (was useless before, but not sure if
2171        it's much more useful now);
2172      - Switch the order of sync: MPI-proc 1rst and then threads;
2173      - take out spin-waiting code (#undef EXCH_USE_SPINNING), use BARRIER instead.
2174      - fix AD code for communication mode ='get' (but not used).
2175    o model/src:
2176      initialise dPhiHydX,dPhiHydY inside calc_grad_phi_hyd.F (so that TAF does
2177      not drop it in S/R mddynamics, producing NaN in hs94.1x64x5 AD-test exp).
2178    o utils/matlab/rdmnc.m: adapt to be able to use the generic matlab netcdf API
2179    o pkg/ctrl: require a specific set of control variables and exf-flags for
2180      adjoint of seaice (stop in ctrl_check.F if conditions are not satisfied)
2181    o model/src:
2182     a) 1rst version of a new driver S/R to turn-off output freq and flags after the
2183       1rst forward sweep, to avoid over-writing output files during recomputations
2184       recomputations (& grdchk); called from cost_final.F (& ctrl_init_ctrlvar.F ?)
2185     b) 2nd version:
2186      - add specific pkg S/R for seaice & ptracers (called from S/R TURNOFF_MODEL_IO);
2187      - switch-off more output flags (exf_monFreq, chkPtFreq, dumpInitAndLast,
2188         writePickupAtEnd) + seaice & ptracers output;
2189      - do not switch off MNC flags (otherwise, won't get admonitor netcdf file)
2190    o model/src:
2191      - new S/R rotate_uv2en_rl (..._rs) that rotates vector fields.
2192    o pkg/exch2:
2193      - remove "simulationMode" from arg. list of S/R EXCH2_RX1,2_CUBE ;
2194      - add argument "signOption" to EXCH2_RX1_CUBE (will be needed for SM exch).
2195    o pkg/autodiff & exch2:
2196      process exch_uv_agrid_3d_rx.f & exch2_uv_agrid_3d_rx.f through TAF
2197      (for now, only if ALLOW_EXCH2 is defined).
2198    o pkg/autodiff:
2199      - include PACKAGES_CONFIG.h in exch*ad.flow & exch*ad.F
2200        (not supposed to be in CPP_OPTIONS.h) to get ALLOW_EXCH2 defined correctly.
2201       + clean-up comments (_RS is not always real*4)
2202      - fix bug in ADEXCH_UV_3D_RX (without EXCH2, was calling the forward exch S/R)
2203      - add a stop in ADEXCH_UV_AGRID_3D_RX if trying to use it with EXCH2:
2204        was calling a forward exch2, which is wrong ; used in SEAICE & EXF pkgs.
2205    o testreport (AD-tests):
2206      no longer link files from dir "../input" (1rst link files from
2207      "../input_ad.[xx]" if secondary test "xx" and then from "../input_ad")
2208    
2209    checkpoint62f (2010/04/29)
2210  o model/src/the_main_loop.F:  o model/src/the_main_loop.F:
2211    adjust store directives for seaice evp and multicategory according to    adjust store directives for seaice evp and multicategory according to
2212    pkg/ecco/the_main_loop.F    pkg/ecco/the_main_loop.F
2213  o adjoint:  o adjoint:
2214    global_sum_ad was incomplete (noted many times by many people ;)    global_sum_ad was incomplete (noted many times by many people ;)
2215    nice description by Jean U. as follows:    nice description by Jean U. as follows:
2216    * allreduce(var) in global_sum.F can be interpreted as    * allreduce(var) in global_sum.F can be interpreted as
2217      reduce(sum) followed by broadcast of sum.        reduce(sum) followed by broadcast of sum.
2218    * The adjoint of that is    * The adjoint of that is
2219      sum(adjoint) followed by broadcast(summed adjoint value)      sum(adjoint) followed by broadcast(summed adjoint value)
2220      or in other words, allreduce(sum, adjoint vars)      or in other words, allreduce(sum, adjoint vars)
2221    We were missing the sum(adjoint)!    We were missing the sum(adjoint)!
2222    Benign, except(!) for "global" scalars appearing in tile loops (bi,bj)    Benign, except(!) for "global" scalars appearing in tile loops (bi,bj)
# Line 117  o tools/build_options: Line 2320  o tools/build_options:
2320      but keep the former optfile for few weeks for smooth transition      but keep the former optfile for few weeks for smooth transition
2321  o pkg/ecco  o pkg/ecco
2322    - allow user defined cost function contributions    - allow user defined cost function contributions
2323          CPP: ALLOW_USERCOST_CONTRIBUTION       CPP: ALLOW_USERCOST_CONTRIBUTION
2324          USAGE: compute contributions in cost_usercost_all.F       USAGE: compute contributions in cost_usercost_all.F
2325    - note: this is identical to what ALLOW_GENCOST_CONTRIBUTION once was.    - note: this is identical to what ALLOW_GENCOST_CONTRIBUTION once was.
2326        the two options are complementary.        the two options are complementary.
2327  o pkg/smooth  o pkg/smooth

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