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revision 1.1596 by gforget, Mon Feb 13 23:45:41 2012 UTC revision 1.1691 by jmc, Tue Jul 17 01:15:26 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 pkg/seaice :  o verification/tutorial_tracer_adjsens:
8    - simplify McPhee tapering, and allow to use it with SEAICEturbFluxFormula.EQ.     improve parameter consistencyi (and get rid of warnings):
9    1 or 2, using newly added run time parameter SEAICE_availHeatTaper.     - use deltaTFreeSurf=deltaTtracer (better with NonLin FreeSurf);
10       - switch Temp Adv Scheme from 81 to 80 (no limiter since theta < 0 is physical)
11       - use staggerTimeStep (for stability) in som81; use default rotation period.
12    o pkg/exch2:
13      - with empty facet: fix compact-format (W2_mapIO=1) definition (was previously
14        reset to 0 = 1 long line in X)
15    o pkg/mdsio:
16      - fix reading of dimensions from meta file for large-size domain
17    o model/src:
18      - fix saltIsActiveTr setting for IdealGas eosType (eosType is 6 character long);
19      - to refine CS-grid check, add logical flag "hasWetCSCorners": true if using
20        Cubed-Sphere Exch with CS-corners inside the domain;
21        make new S/R INI_GLOBAL_DOMAIN from code in ini_linear_phisurf.F to calculate
22        globalArea and to set hasWetCSCorners.
23      - add warning if usingCurvilinearGrid and momAdvection in flux-form (missing
24        metric terms); stop if hasWetCSCorners=T and momAdvection in flux-form.
25      - re-activate the stop if useCDscheme and hasWetCSCorners=T (previously if
26        useCDscheme and useCubedSphereExchange).
27    o pkg/seaice/seaice_growth.F :
28      - compute the SEAICE_DISABLE_HEATCONSFIX term accordingly
29        for the (.NOT.useRealFreshWaterFlux).OR.(nonlinFreeSurf.EQ.0)
30        when the previous code was not correct.
31      - in all cases diagnoze the boundary condition mismatch to SIaaflux
32      - in the case of useRealFreshWaterFlux.AND.(nonlinFreeSurf.GT.0) add
33        that term to QNET (essentially to set the melt/freeze water to 0degC).
34        when SEAICEheatConsFix is true, so that the ocean+ice budget heat is closed.
35    o verification/global_ocean.cs32x15/input.seaice :
36      - add SEAICEheatConsFix in data.seaice, ensuring closed ocean+ice heat budget.
37      - add diagnostics (commented out) for budget test using my matlab codes (gcmfaces).
38      - update results (output.seaice.txt) accordingly.
39    o verification/lab_sea/input/data.seaice :
40      - remove SEAICEheatConsFix, which is now be tested
41        in global_ocean.cs32x15. The presently coded fix
42        is only consistent with real fresh water + nlfs.
43      - update results (output.txt) accordingly.
44    o pkg/salt_plume: added diagnotic for salt tendency (oceSPtnd).
45    o AD_CONFIG.h file:
46      - in genmake2: remove "#undef ALLOW_ECCO_OPTIMIZATION" from AD_CONFIG.h;
47      - remove #include "AD_CONFIG.h" from all included OPTIONS files and
48        add it explicitly in each fortran src file where it is needed.
49        motivation: header file AD_CONFIG.h is generated/modified after "make depend"
50        thus introducing potentially wrong dependency; therefore, better to include
51        it only where it's really needed, and after any other included OPTIONS file
52        (less tempting to bring conditional includes according to ALLOW_ADJOINT_RUN
53        or ALLOW_TANGENTLINEAR_RUN).
54    
55    checkpoint63p (2012/07/06)
56    o pkg/autodiff:
57      - rename S/R INI_AUTODIFF to AUTODIFF_INIT_VARIA ;
58      - create new header file "AUTODIFF_PARAMS.h" for pkg/autodiff parameters
59        which are now read from new parameter file "data.autodiff" (inAdExact
60        previously in "data", use{KPP/GMRedi/SEAICE}inAdMode previously in data.pkg)
61      - add file "data.autodiff" in all verification/*/input_ad/ directories.
62      - add run-time parameter to turn On/Off SEAICEuseFREEDRIFT in adjoint/forward
63        mode (used in global_ocean.cs32x15.seaice_dynmix test exp.)
64    o verification/tutorial_tracer_adjsens/
65      - add extra sub-verification which uses "SOM" advection scheme
66        (2nd Order-Moment Advection Scheme, Prather Limiter) with
67          #define GAD_ALLOW_TS_SOM_ADV in GAD_OPTIONS.h
68        and in data:
69          multiDimAdvection=.TRUE.,
70          tempAdvScheme=81,
71          saltAdvScheme=81,
72    o model/src:
73      - introduce ALLOW_BALANCE_RELAX which allow the removal
74       of the global mean of relaxation terms by setting
75       balanceThetaClimRelax and balanceSaltClimRelax
76      - disable balanceEmPmR and balanceQnet in the case when useSeaice.
77       This case is now treated appropriately in seaice_growth.F
78    o pkg/seaice:
79      - do balanceEmPmR and balanceQnet based on the net fluxes
80        (SItflux) that enter the ocean+ice system rather than QNET
81        and EMPMR. Works best in real fresh water.
82      - SIatmFW, SIatmQnet, and SItflux computations had to be moved
83        out of the diagnotics bloc, and stored in global arrays.
84    
85    checkpoint63o (2012/06/29)
86    o vertical mixing schemes:
87      - remove unused S/R CALC_BUOYANCY (left from branch-atmos merging)
88      - replace computation of density (in Function STATE1, opps_calc.F) by a call
89        to S/R FIND_RHO_SCALAR
90      - pass sigmaR to S/R PP81_CALC, MY82_CALC (but not yet used) and to GGL90_CALC
91        and use it for N^2 calculation in ggl90_calc.F (save 2 density computations);
92        affects output (vermix.ggl90) at truncation level.
93    o testreport:
94      - change adjustment of SIZE.h for mpi+mth testing: preserve enough tiles
95        (nSx,nSy) for the number of threads (from eedata.mth)
96    o model/src:
97      - remove 2nd set of calls at the top of initialise_varia.F (Adjoint part)
98        related to Non_Lin Free-Surf or Bottom-Control (but not longer necessary).
99    o verification/tutorial_tracer_adjsens/
100      - compile with ALLOW_CG2D_NSA
101      - run with nonlinFreeSurf=3
102      - update reference output_adm.txt
103    o tools/genmake2:
104      - add "-DHAVE_NETCDF" to the DEFINES list when NetCDF is available ;
105        refine usePROFILES switching off (only when NetCDF is not available).
106    o verification (atmospheric set-up):
107      - change eosType='IDEALGAS' to eosType='IDEALG' to match variable declaration
108    o pkg/profiles : refine profiles and files handling.
109    o model/src and pkg/ecco : introduce run-time switch usePROFILES.
110    o model/src/the_main_loop.F, forward_step.F and pkg/exf/EXF_OPTIONS.h :
111      - changes to use model/src/the_main_loop.F rather than the ecco version
112        in ecco type adjoint runs.
113    o model/src:
114      - move computation of recip of grid distance & area from INI_MASKS_ETC to INI_GRID
115      - move setting of h0Fac[C,W,S] from INI_LINEAR_PHISURF to INI_MASKS_ETC
116      - update_masks_etc.F: rename SMOOTH*_R4,R8 function to the corresponding type (RS,RL)
117    o model/src:
118      - fix S/R UPDATE_CG2D for ALLOW_DEPTH_CONTROL case (was empty before);
119        update output of test experiment bottom_ctrl_5x5.
120    o pkg/generic_advdiff:
121      - implement vertical bi-harmonic diffusion (for now, only for T & S and
122        only explicitly).
123    o verification/bottom_ctrl_5x5/
124      update reference output (results changed quite some time ago,
125      not sure when; but new reference results look ok in terms of grdchk)
126    o verification/1D_ocean_ice_column/
127      For verification purposes, the exact adjoint rather than an approx.
128      should be used (e.g., to comare against F.D. or TLM).
129      removed autodiff_inadmode*_ad.F routines in code_ad/
130      Update results/ accordingly.
131    o pkg/cal:
132      - change cal_getdate.F so that output date is function of input time only
133        (less ambiguous, not mixed up with input iteration number).
134      - fix calendarDumps for non-zero phase-lag (S/R CAL_TIME2DUMP).
135    o pkg/diagnostics:
136      - implement calendarDumps also for stats-diags
137      - implement calendarDumps also for snap-shot output (negative freq)
138      - for now, ignores calendarDumps if non-zero phase-lag.
139    
140    checkpoint63n (2012/06/04)
141    o model/src:
142      - recompute rSurfW & S to ensure consistent column thickness (needed for rStar)
143        between Sum_k(hFac*drF) and rSurf-rLow, for now only when using pkg/shelfice;
144      - use h0FacC, W & S to compute hFac_surfC, W & S in calc_surf_dr.F (more
145        similar to calc_r_star.F); update results of experiment internal_wave and
146        tutorial_global_oce_in_p (affected @ truncation level).
147    o pkg/shelfice:
148      - add parameterisation of advective-diffusive flux into the ice shelf
149        according to Holland and Jenkins (1999), eq.22-33, as suggested by Jan De Ryd
150      - simply eps3/3a computation
151    o eesupp:
152     - add new CPP option (DISCONNECTED_TILES) to disconnect tiles (no exchange
153       between tiles, just fill-in edges assuming locally periodic subdomain) and
154       add corresponding exchange subroutines (EXCH0);
155     - new CG-solver version (_EX0) for disconnected-tiles special case.
156    o model/src (CG-solvers):
157     - modify Single-Reduction version (CG2D_SR) in case cg2dMaxIters is reached
158       (similar final residual output and max-Iter number as with standard version);
159     - allows to store and use lowest-residual solution (standard & _SR versions);
160     - cleaning up (remove old, commented out code, LETS_MAKE_JAM ...).
161     - by default, also compile CG2D_SR version (define ALLOW_SRCG in CPP_OPTIONS.h)
162    o eesup/src:
163     - global_vec_sum.F cleaning: add a BARRIER ; update comments ; remove ndef
164       ALWAYS_USE_MPI (no longer needed after fixing usingMPI settings - March 2012)
165    o pkg/salt_plume added to lab_sea/input_ad.noseaicedyn
166    
167    checkpoint63m (2012/04/27)
168    o pkg/shelfice:
169     - account for partical cells in surface level below ice-shelf for hydrostatic
170       pressure calculion (set uniformFreeSurfLev to F); update isomip experiments.
171    o ad test experiments:
172     - update and rename to "ad_optfile.local" local AD-optfile specific to a
173       particular adjoint verification experiment (in verification/*/code_ad/)
174    o pkg/seaice & pkg/exf:
175     - Part two of ECCO-CLIVAR code merges.
176       Completes merge of seaice area relax. code.
177       Requires unified CPP option EXF_ALLOW_SEAICE_RELAX
178       to be set in EXF_OPTIONS.h since this pkg controls its I/O
179       (and avoids second CPP option in SEAICE_OPTIONS.h)
180     - change default value of costIceStart & costIceEnd to a valid date.
181     - add snowPrecip to HSNOW in seaice_growth
182    o pkg/ptracers:
183     - move ptracers summary and setup check into separated S/R ; add a check for
184       valid PTRACERS_Iter0 value (error+stop or just warning).
185    o pkg/cal (+ pkg/ecco):
186     - avoid calling a S/R with 2 times the same arg (FWD: unless both are only used
187       as input; and for AD, unless both are not differentiable (e.g., k index)).
188    o model/src:
189     - define internal flag "uniformFreeSurfLev" (=T when free-surface level-index
190       is everywhere k=1) to speed-up some calculations (by pass kSurf reference);
191       temporary set to usingZCoords value (to be changed to F when using shelfice).
192     - hydrostatic pressure: implement partial cell near the surface also for
193       Z-coordinates (for the case where uniformFreeSurfLev=F); replace test on
194       usingZCoords with test on uniformFreeSurfLev where needed (in NonHyd code).
195    o pkg/ctrl/ctrl_init.F:
196     - add a formal parameter to s/r ctrl_init_rec to print
197       xx_$(ctrl_valiable)_file for easier debugging
198     - move call of cal_* routines into the if-block where they are really
199       needed so that xx_$(ctrl_variable)_period can be 0 or -12 without having
200       to specify a startdate
201    o pkg/seaice:
202     - update comments in SEAICE_OPTIONS.h (+ similar update of lab_sea/code and
203       global_ocean.cs32x15/code versions).
204     - turn on seaice Multi-category (in data.seaice, SEAICE_multDim=7) for
205       verification experiment global_ocean.cs32x15.seaice and update results.
206    o pkg/exf:
207     - new S/R EXF_GETFIELD_START to return starting-time of a forcing field
208       (according to useExfYearlyFields).
209    o pkg/cal:
210     - move calendar setting & summary (previously in cal_readparams.F) into new
211       S/R CAL_INIT_FIXED to be called later in the initialisation process, once
212       length of the simulation is set (after SET_PARMS call); This is an attempt
213       to fix Pb when, e.g.: pkg/longstep, modifies the length of the run.
214     - For safety: keep a record of pkg/cal parameter settings status
215               to allow to STOP if one pkg/cal S/R is called too early.
216     - add a stop in all basic pkg/cal subroutines if called before setting is done.
217     - modify cal_getdate.F: stop when nothing was returned;
218       if called with myIter=-1, simply retrun modelBaseDate (1,2 = startDate_1,_2);
219       this allows to remove "cal.h" from seaice_read_parms.F & init_mnc_vars.F.
220    
221    checkpoint63l (2012/04/04)
222    o pkg/bbl:
223      - fix call to FIND_RHO_2D in bbl_calc_rho.F (case multi-tiles per proc);
224        update global_with_exf output.yearly.txt file.
225    o pkg/cal:
226      - start to clean-up cal_set.F ; fix for the case where baseTime is non-zero.
227      - remove 2 unsused and very short (1 line only) functions ;
228      - remove unsused subroutines from AD-Diff list.
229    o model/src:
230      - start to implement clean wait to stop in initialization S/R (config_check.F,
231         packages_check.F, ini_parms.F and pkg/obcs/obcs_check.F + pkg/mypackage)
232    o folowing PRINT_MESSAGE changes:
233      - remove reminder multiple print to the same file (STDOUT) when multi-threads.
234    o pkg/bbl:
235      - modification so it can work with z*
236      - replace deltaT with dTtracerLev(k) for asynchronous time stepping
237      - global_with_exf/input.yearly verification; changes output.yearly.txt
238    o eesupp/src:
239      - PRINT_MESSAGE: use OpenMP critical instruction (similar to PRINT_ERROR);
240        writing to unit 0 (if unit=errorMessageUnit) extended to the case myThid=1
241      - CHECK_THREADS: specific code if using OpenMP threading: improve checking of
242        # of threads across processors (e.g., different env OMP_NUM_THREADS setting)
243      - improve special preliminary call to EESET_PARMS (if eedata is read 2 times).
244      - when using MPI, always set usingMPI=T ; set default accordingly and stop
245        if not consistent.
246      - ALL_PROC_DIE: add a BARRIER after MPI_FINALIZE call ; skip this when thread
247        argument is zero (in case called within single-thread section).
248    o pkg/fizhi:
249        clean-up turbulence cold-start switch: decided in fizhi_init_vars.F, stored
250        in common bloc (fizhi_coms.h) and then passed as argument up to S/R TURBIO.
251    o pkg/exch2:
252      - add argument "updateCorners" to S/R exch2_get_uv_bounds (enable to
253        activate EXCH_IGNORE_CORNERS in vector EXCH S/R).
254      - switch 1rst EXCH call to IGNORE_CORNERS (instead of UPDATE_CORNERS)
255        but keep the 2nd with UPDATE_CORNERS: this prevents overwriting good data
256        with bad ones coming from a not-yet-updated halo.
257        This should fix the problem when sNx <> sNy and GCD(sNx,sNy) < 2*Olx.
258    o pkg/frazil:
259        move FrzForcT diag from frazil_diagnostics_state.F to frazil_calc_rhs.F
260        http://mitgcm.org/pipermail/mitgcm-devel/2012-March/005384.html
261    o model/src/config_check.F: add a check for OLx>sNx/OLy>sNy
262    o verification/lab_sea
263      * #undef SEAICE_EXCLUDE_FOR_EXACT_AD_TESTING
264      * #define ALLOW_SST_CONTROL & ALLOW_SST_CONTROL
265      * nTimeSteps 3 -> 4
266      * changed reference output accordingly
267    o pkg/ctrl:
268      * fix ctrl_get_gen for xx_sst, xx_sss
269    o pkg/fizhi:
270      - fix 2 calls to S/R GRD2MSC (argument igrd) in update_earth_exports.F
271        update results of exp. fizhi-cs-32x32x40 (fail with only 6 digits for cg2d)
272      - by default, use new version of S/R GETPWHERE (#define TRY_NEW_GETPWHERE);
273        fix few out-of-bounds indices in referencing vars (initialise igrd to 1);
274        clean-up fizhi_turb.F (remove unused & uninitialised qdiaglsm array).
275    o pkg/gmredi:
276      - add diagnostic of Redi (main diagnonal) vertical diffusive flux of Temp
277    o pkg/fizhi:
278      - fix few initialisation and multi-tile Pb: aqualev & gridalt now pass the
279        (old)aces open64 tuv test.
280    o pkg/icefront: fix bug and reorder loop in icefront_init_varia.F
281    o pkg/mom_vecinv:
282      - fix 1 loop range in mom_vecinv.F to be like all the other loops which
283        set/update gu,gv/Diss (fix Pb of uninitialised fVerUkp in admom_vecinv
284        with non-lin free-surf).
285    o model/src: move k-loop outside of i/j-loops when (re-)computing R_low
286      in ini/update_masks_etc.F in order to avoid -O3 optimization problems with
287      some compilers (gfortran 4.6.0 on MacOS)
288    o momentum:
289      - separate fVer?(:,:,kUp) & fVer?(:,:,kDown) in argument list of MOM_FLUXFORM
290        & MOM_VECINV subroutines (to help TAF). This fixes Pb of uninitialised
291        fVer?(kUp) in admom_fluxform with non-lin free-surf or bottom control.
292    
293    checkpoint63k (2012/03/17)
294    o model/src:
295       - selectAddFluid (ALLOW_ADDFLUID): add missing term in horizontal momentum
296         flux-form (mom_fluxform.F) and vertical momentum (calc_gw.F) equations.
297       - SOLVE_DIAGONAL: switch default to use adjoinable & vectorized version
298         (#undef SOLVE_DIAGONAL_LOWMEMORY); update output of exp. front_relax.bvp.
299    o model/src: solve_*diagonal.F
300       - replace division with multiplication by inverse (similar to original version)
301         update output of AD exp. global_ocean.90x40x15.
302       - fix pkg/gmredi/gmredi_calc_psi_bvp.F & pkg/ggl90/ggl90_calc.F
303         to enable the use of the vectorized & differentiable solve_tridiagonal.F
304       - test exp. global_ocean.90x40x15/input_ad: switch to advection scheme 20 for
305         vertical advection (to get solve_tridiagonal tested in AD mode).
306    o pkg/seaice: ECCO-CLIVAR merge:
307      1. seaice AREA relaxation
308         * CPP option: SEAICE_ALLOW_AREA_RELAXATION
309         * runtime flag: SEAICE_tauAreaObsRelax
310      2. modified global mean cost imbalance code: CPP option
311          ALLOW_SSH_GLOBMEAN_COST_CONTRIBUTION
312    o another iteration on solve_*diagonal.F
313       Make choices independent of AUTODIFF
314       Default will be the adjoinable vectorized version.
315       Alternative choices are:
316       * non-adjoinable original version with low memory footprint:
317         #define SOLVE_DIAGONAL_LOWMEMORY
318       * still adjoinable but does not vectorize (k as inner-most loop):
319         #define SOLVE_DIAGONAL_KINNER (keeping SOLVE_DIAGONAL_LOWMEMORY undef)
320    o testreport
321     - add option to use a home made wrapper around "make"
322     - remove MITGCM_IEEE env. variable (no longer active)
323    o pkg/shelfice
324     - improve computation of friction velocity for velocity dependent
325       exchange coefficients: include velocities into SHELFICEBoundaryLayer
326       block to average velocities vertically
327     - add TAF store directives for SHI_ALLOW_GAMMAFRICT
328    o Modify diagonal solvers, now three versions (upon request):
329      #ifndef SOLVE_DIAGONAL_AUTODIFF
330        1. default version (dating back a while ago)
331      #else /* def SOLVE_DIAGONAL_AUTODIFF */
332      # ifdef SOLVE_DIAGONAL_KINNER
333        2. adjoinable version with k-innermost loop (G. Forget)
334      # else
335        3. adjoinable vectorized version of 2.
336      # endif
337      #endif /* SOLVE_DIAGONAL_AUTODIFF */
338      All flags are currently set within routines, but could/should be moved to CPP-options.
339      Array bounds for 1. are as before, for 2.,3. cover the entire domain
340      (could be changed for 1. too).
341    o verification/lab_sea (fwd):
342      - update the 4 fwd lab_sea test experiment: no longer SEAICE_GROWTH_LEGACY,
343        use 7 categories (except hb87), new solve4temp params (except salt_plume),
344        constant salinity (=4) or variable salinity (salt_plume) done through
345        SItracer.
346    o pkg/seaice:
347      - rename parameters: SIsalFrac to SEAICE_saltFrac & SIsal0 to SEAICE_salt0;
348      - remove old parameters ( SEAICE_freeze, SEAICEturbFluxFormula, SEAICE_gamma_t,
349         SEAICE_gamma_t_frz, SEAICE_availHeatTaper & SEAICE_availHeatFracFrz)
350        from SEAICE_PARMS.h ; still need to fix seaice_cost_sst.F (broken when
351        SEAICE_freeze got retired) but already better than previously with
352        SEAICE_freeze=123456.7 deg.C;
353      - move setting of facOpenGrow/Melt from SEAICE_INIT_FIXED to SEAICE_READPARMS
354        (safer multi-threaded setting); always set SEAICEuseEVP;
355      - setting of ocean-ice turb. flux coeff: moved from SEAICE_CHECK to
356        SEAICE_READPARMS & SEAICE_INIT_FIXED (this fixes wrong summary report);
357        stop if multiple specifications for the same coeff; make sure default
358        SEAICE_mcPheePiston is compatible with drF(1) & deltaT.
359    o pkg/obcs:
360      - allow to switch to upwind 1rst order advection scheme for the advective
361        flux computation at the open-boundary; disabled for adjoint built.
362    o pkg/ptracers:
363      - rename PTRACERS_RESTART.h -> PTRACERS_START.h
364      - rename ptracers_fields_blocking_exchanges.F -> ptracers_fields_blocking_exch.F
365      - add parameter to decide when to start a tracer; use internal flag to
366        know which tracer to step-forward; switch this internal flag at the top
367        of forward_step.F (new S/R PTRACERS_SWITCH_ONOFF); for now, not enabled
368        for adjoint built.
369    o pkg/seaice:
370      - add SEAICE_SIZE.h anywhere in the code where SEAICE.h is included ;
371      - move MULTDIM declaration and setting from SEAICE.h to SEAICE_SIZE.h ;
372      - keep experiment offline_exf_seaice truly single category (set MULTDIM=1).
373    o pkg/ecco:
374      - fix writing of output file DiagnosCost_ClimSalt/Theta
375        and DiagnosCost_DriftSalt/Theta (if multi-tiles per proc).
376    o pkg/seaice:
377      - add missing initialisation of COR_ICE array in dynsolver.F
378      - merging SEAICE_MULTICATEGORY define and undef cases. Now the same code is
379        compiled either way, and is tested in all exps (multidim was only tested
380        in lab_sea ad before).
381      - cosmetic change to prepare for future addition of ITD. no change to results.
382        no defaults change.
383      - added run time param SEAICE_multDim (7 for SEAICE_MULTICATEGORY, 1 otherwise).
384      - by lack of adequate verification experiments, I further used custom versions
385        of global_ocean.cs32x15 to test multicat or not, with pickup or not. All
386        should be correct.
387      - avoid recomputations in ad.
388    o array initialisation in adjoint mode:
389      1) pkg/mom_common/mom_calc_ke.F:
390        add full array initialisation of KE inside mom_calc_ke.F (ALLOW_AUTODIFF_TAMC):
391        The S/R which calls MOM_CALC_KE initialises KE but in some recomputation
392        part this initialisation is gone, resulting in Floating Point Exception
393        (caught by open64 compiler with debug option).
394      2) model/src/convective_weights.F
395        set output convectCount over the full array range (instead of doing
396        an update): this fix a similar issue when called within recomputation (adjoint)
397        which could by-pass the initialisation (normally done in the caller S/R).
398    o pkg/seaice:
399      - final version of turbulent flux params, as agreed at MIT ice meet:
400           SEAICE_mcPheePiston (default is ~ 0.000875)
401           SEAICE_mcPheeTaper (default is 0.)
402           SEAICE_frazilFrac (defualt is 1.)
403           SEAICE_mcPheeStepFunc (default is false)
404      - changes results at trunction error level
405      - ifdef SEAICE_EXTERNAL_FLUXES, disallow SEAICE_waterAlbedo
406    o added pkg/frazil:
407      - see frazil_description.tex for details
408      - verification experiment is global_with_exf/input.yearly; changes output.yearly.txt
409    o pkg/shelfice/shelfice_thermodynamics.F
410      - fix exponents for velocity dependent exchange coefficients: change
411        from 2/3(=0) to 0.66666666666666667
412      - move computation of velocity dependent exchange coefficients into
413        separate loop, so that it applies to both thermodynamics
414      - move some divisions by constants out of loops
415    
416    checkpoint63j (2012/02/16)
417    o pkg/seaice:
418      - overhaul of seaice_summary.F after feb 2012 clean-up of seaice_growth.F etc.
419      - SItracer:  added run time params, and allow coupling to ocn salinity.
420    o pkg/seaice: remove (almost) all divisions by constants within loops
421      in seaice_growth.F and seaice_solve4temp.F, this changes (only) the cg2d
422      results of global_ocean.cs32x15.seaice from 16 to 11 digits (but only
423      those, caused by 1/QI -> recip_QI) -> update output.seaice.txt,
424      output_adm.seaice_dynmix.txt and also lab_sea: output_adm.evp.txt
425    o pkg/seaice :
426      - simplify McPhee tapering, and allow to use it with SEAICEturbFluxFormula
427        = 1 or 2, using newly added run time parameter SEAICE_availHeatTaper.
428    - fix d_AREAbyATM, d_AREAbyOCN, d_AREAbyICE diags I broke in r1.148.    - fix d_AREAbyATM, d_AREAbyOCN, d_AREAbyICE diags I broke in r1.148.
429    - add permanent SItflux diag that corresponds to TFLUX but includes    - add permanent SItflux diag that corresponds to TFLUX but includes
430    ice+snow. Hence SItflux-TFLUX should match the ice+snow heat budget.      ice+snow. Hence SItflux-TFLUX should match the ice+snow heat budget.
431    - allow activation/testing of a fix for suspected missing term in    - allow activation/testing of a fix for suspected missing term in
432    ocn-ice heat budget (to be confirmed). To test this, you want to      ocn-ice heat budget (to be confirmed). To test this, you want to
433    undef SEAICE_DISABLE_HEATCONSFIX, and then set the run time param      undef SEAICE_DISABLE_HEATCONSFIX, and then set the run time param
434    SEAICEheatConsFix to .TRUE. that also allows the 'SIaaflux' diagnostic.      SEAICEheatConsFix to .TRUE. that also allows the 'SIaaflux' diagnostic.
435    - no change in results, fwd or ad.    - no change in results, fwd or ad.
436  o global_ocean.cs32x15/results: three changes following from the pkg/seaice commit below.  o global_ocean.cs32x15/results: 3 changes following from the pkg/seaice commit below:
437    - switch to variable freezing point.    - switch to variable freezing point.
438         Results change : cg2d -> 1 digits; ad -> 3-6-6 digits.         Results change : cg2d -> 1 digits; ad -> 3-6-6 digits.
439    - bug fix : the sublimation term that was missing is now activated.    - bug fix : the sublimation term that was missing is now activated.
440         Results change : cg2d -> 2 digits; ad -> 8-6-6 digits.         Results change : cg2d -> 2 digits; ad -> 8-6-6 digits.
441    - bug fix : flooding sign term for SIsal0.NE.0.    - bug fix : flooding sign term for SIsal0.NE.0.
442         Result change : cg2d -> 8 digits; ad -> 11-12-9 digits.         Result change : cg2d -> 8 digits; ad -> 11-12-9 digits.
443  o pkg/seaice:  o pkg/seaice:
444    - unified freezing point treatment : the old SEAICE_VARIABLE_FREEZING_POINT    - unified freezing point treatment : the old SEAICE_VARIABLE_FREEZING_POINT
445   is now the default, and the old default constant freezing point is recovered with      is now the default, and the old default constant freezing point is recovered
446   SEAICE_tempFrz0    = -1.96,      with SEAICE_tempFrz0    = -1.96,
447   SEAICE_dTempFrz_dS = 0.,           SEAICE_dTempFrz_dS = 0.,
448    - retire SEAICE_freeze that was the old way of specifycing the constant freezing point.    - retire SEAICE_freeze (= the old way of specifycing the constant freezing point)
449    - remove ALLOW_SEAICE_FLOODING brackets; run time switch is already there.    - remove ALLOW_SEAICE_FLOODING brackets; run time switch is already there.
450    - bug fix (thanks to M. Losch) : the sublimation term that was missing is now    - bug fix (thanks to M. Losch) : the sublimation term that was missing is now
451   activated. To reproduce old results that had this bug define SEAICE_DISABLE_SUBLIM.      activated. To reproduce old results with this bug define SEAICE_DISABLE_SUBLIM.
452    - bug fix (silly me) : flooding sign term (seaice_growth.F r 1.149line 1211)    - bug fix (silly me) : flooding sign term (seaice_growth.F r 1.149line 1211)
453   was wrong for SIsal0.NE.0. Changes cs32x15 results (see above item for detail).      was wrong for SIsal0.NE.0. Changes cs32x15 results (see above item for detail).
454    - bug fix (thanks to O. Jahn) : area loss for melting  got messed up in    - bug fix (thanks to O. Jahn) : area loss for melting  got messed up in
455   seaice_growth r149 for legacy branch (no results change).      seaice_growth r149 for legacy branch (no results change).
456    - introduce SEAICE_CAP_SUBLIM : caps sublimation heat flux in solve4temp (code from I. Fenty).    - introduce SEAICE_CAP_SUBLIM : caps sublimation heat flux in solve4temp (code
457    - results did not change except for global_ocean.cs32x15, mostly due to the switch      from I. Fenty).
458    to variable freezing point (see above item for detail).    - results did not change except for global_ocean.cs32x15, mostly due to the
459        switch to variable freezing point (see above item for detail).
460  o pkg/thsice:  o pkg/thsice:
461    - fix and simplify interface to salt_plume pkg ; diagnose directly amount of    - fix and simplify interface to salt_plume pkg ; diagnose directly amount of
462      seawater freezing in thsice_calc_thickn (not used).      seawater freezing in thsice_calc_thickn (not used).
463  o pkg/seaice: turbulent flux term specification via run time params.  o pkg/seaice: turbulent flux term specification via run time params.
464    - replace CPP switches with run time switches to facilitate testing    - replace CPP switches with run time switches to facilitate testing
465    - retired CPPs : MCPHEE_OCEAN_ICE_HEAT_FLUX, GRADIENT_MIXED_LAYER_TURBULENCE_FACTOR    - retired CPPs : MCPHEE_OCEAN_ICE_HEAT_FLUX,
466                       GRADIENT_MIXED_LAYER_TURBULENCE_FACTOR
467    - added runtime parameter : SEAICEturbFluxFormula    - added runtime parameter : SEAICEturbFluxFormula
468    - move Mcphee constants to SEAICE_PARAMS.h    - move Mcphee constants to SEAICE_PARAMS.h
469    - seaice_readparms.F : read turbulent flux term params (SEAICEturbFluxFormula;    - seaice_readparms.F : read turbulent flux term params (SEAICEturbFluxFormula;
470      SEAICE_availHeatFrac/Frz, or SEAICE_gamma_t/_frz if apply); remove               SEAICE_availHeatFrac/Frz, or SEAICE_gamma_t/_frz if apply);
471      seaice_summary call (moved to seaice_init_fixed)               remove seaice_summary call (moved to seaice_init_fixed)
472    - seaice_init_fixed.F : set SEAICE_availHeatFrac/Frz depending on    - seaice_init_fixed.F : set SEAICE_availHeatFrac/Frz depending on
473      SEAICEturbFluxFormula, and seaice_summary call (moved from seaice_readparms)      SEAICEturbFluxFormula, and seaice_summary call (moved from seaice_readparms)
474    - seaice_summary.F : add missing report of read turbulent flux term set up (and SITRACER).    - seaice_summary.F : add missing report of read turbulent flux term set up
475    - seaice_check.F : check range; inform and stop if retired CPPs are used (incl. SEAICE_AGE).                         and SITRACER.
476      - seaice_check.F : check range; inform and stop if retired CPPs are used
477                         (incl. SEAICE_AGE).
478    - seaice_growth.F : unified use of SEAICE_availHeatFrac/Frz, without    - seaice_growth.F : unified use of SEAICE_availHeatFrac/Frz, without
479          CPP switch, same computation as before for the different options.           CPP switch, same computation as before for the different options.
480    - change results at the truncation level.    - change results at the truncation level.
481  o pkg/seaice:  o pkg/seaice:
482    - remove un-used parameters LAD & MAX_TICE ; add new run-time parameters:    - remove un-used parameters LAD & MAX_TICE ; add new run-time parameters:
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