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revision 1.1580 by mlosch, Mon Jan 23 14:16:56 2012 UTC revision 1.1683 by gforget, Fri Jul 6 06:27:17 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/autodiff:
8      - rename S/R INI_AUTODIFF to AUTODIFF_INIT_VARIA ;
9      - create new header file "AUTODIFF_PARAMS.h" for pkg/autodiff parameters
10        which are now read from new parameter file "data.autodiff" (inAdExact
11        previously in "data", use{KPP/GMRedi/SEAICE}inAdMode previously in data.pkg)
12      - add file "data.autodiff" in all verification/*/input_ad/ directories.
13      - add run-time parameter to turn On/Off SEAICEuseFREEDRIFT in adjoint/forward
14        mode (used in global_ocean.cs32x15.seaice_dynmix test exp.)
15    o verification/tutorial_tracer_adjsens/
16      - add extra sub-verification which uses "SOM" advection scheme
17        (2nd Order-Moment Advection Scheme, Prather Limiter) with
18          #define GAD_ALLOW_TS_SOM_ADV in GAD_OPTIONS.h
19        and in data:
20          multiDimAdvection=.TRUE.,
21          tempAdvScheme=81,
22          saltAdvScheme=81,
23  o model/src:  o model/src:
24    - add factorized versions of some EOS code to find_rho.F,    - introduce ALLOW_BALANCE_RELAX which allow the removal
25       of the global mean of relaxation terms by setting
26       balanceThetaClimRelax and balanceSaltClimRelax
27      - disable balanceEmPmR and balanceQnet in the case when useSeaice.
28       This case is now treated appropriately in seaice_growth.F
29    o pkg/seaice:
30    - do balanceEmPmR and balanceQnet based on the net fluxes
31      (SItflux) that enter the ocean+ice system rather than QNET
32      and EMPMR. Works best in real fresh water.
33    - SIatmFW, SIatmQnet, and SItflux computations had to be moved
34      out of the diagnotics bloc, and stored in global arrays.
35    
36    checkpoint63o (2012/06/29)
37    o vertical mixing schemes:
38      - remove unused S/R CALC_BUOYANCY (left from branch-atmos merging)
39      - replace computation of density (in Function STATE1, opps_calc.F) by a call
40        to S/R FIND_RHO_SCALAR
41      - pass sigmaR to S/R PP81_CALC, MY82_CALC (but not yet used) and to GGL90_CALC
42        and use it for N^2 calculation in ggl90_calc.F (save 2 density computations);
43        affects output (vermix.ggl90) at truncation level.
44    o testreport:
45      - change adjustment of SIZE.h for mpi+mth testing: preserve enough tiles
46        (nSx,nSy) for the number of threads (from eedata.mth)
47    o model/src:
48      - remove 2nd set of calls at the top of initialise_varia.F (Adjoint part)
49        related to Non_Lin Free-Surf or Bottom-Control (but not longer necessary).
50    o verification/tutorial_tracer_adjsens/
51      - compile with ALLOW_CG2D_NSA
52      - run with nonlinFreeSurf=3
53      - update reference output_adm.txt
54    o tools/genmake2:
55      - add "-DHAVE_NETCDF" to the DEFINES list when NetCDF is available ;
56        refine usePROFILES switching off (only when NetCDF is not available).
57    o verification (atmospheric set-up):
58      - change eosType='IDEALGAS' to eosType='IDEALG' to match variable declaration
59    o pkg/profiles : refine profiles and files handling.
60    o model/src and pkg/ecco : introduce run-time switch usePROFILES.
61    o model/src/the_main_loop.F, forward_step.F and pkg/exf/EXF_OPTIONS.h :
62      - changes to use model/src/the_main_loop.F rather than the ecco version
63        in ecco type adjoint runs.
64    o model/src:
65      - move computation of recip of grid distance & area from INI_MASKS_ETC to INI_GRID
66      - move setting of h0Fac[C,W,S] from INI_LINEAR_PHISURF to INI_MASKS_ETC
67      - update_masks_etc.F: rename SMOOTH*_R4,R8 function to the corresponding type (RS,RL)
68    o model/src:
69      - fix S/R UPDATE_CG2D for ALLOW_DEPTH_CONTROL case (was empty before);
70        update output of test experiment bottom_ctrl_5x5.
71    o pkg/generic_advdiff:
72      - implement vertical bi-harmonic diffusion (for now, only for T & S and
73        only explicitly).
74    o verification/bottom_ctrl_5x5/
75      update reference output (results changed quite some time ago,
76      not sure when; but new reference results look ok in terms of grdchk)
77    o verification/1D_ocean_ice_column/
78      For verification purposes, the exact adjoint rather than an approx.
79      should be used (e.g., to comare against F.D. or TLM).
80      removed autodiff_inadmode*_ad.F routines in code_ad/
81      Update results/ accordingly.
82    o pkg/cal:
83      - change cal_getdate.F so that output date is function of input time only
84        (less ambiguous, not mixed up with input iteration number).
85      - fix calendarDumps for non-zero phase-lag (S/R CAL_TIME2DUMP).
86    o pkg/diagnostics:
87      - implement calendarDumps also for stats-diags
88      - implement calendarDumps also for snap-shot output (negative freq)
89      - for now, ignores calendarDumps if non-zero phase-lag.
90    
91    checkpoint63n (2012/06/04)
92    o model/src:
93      - recompute rSurfW & S to ensure consistent column thickness (needed for rStar)
94        between Sum_k(hFac*drF) and rSurf-rLow, for now only when using pkg/shelfice;
95      - use h0FacC, W & S to compute hFac_surfC, W & S in calc_surf_dr.F (more
96        similar to calc_r_star.F); update results of experiment internal_wave and
97        tutorial_global_oce_in_p (affected @ truncation level).
98    o pkg/shelfice:
99      - add parameterisation of advective-diffusive flux into the ice shelf
100        according to Holland and Jenkins (1999), eq.22-33, as suggested by Jan De Ryd
101      - simply eps3/3a computation
102    o eesupp:
103     - add new CPP option (DISCONNECTED_TILES) to disconnect tiles (no exchange
104       between tiles, just fill-in edges assuming locally periodic subdomain) and
105       add corresponding exchange subroutines (EXCH0);
106     - new CG-solver version (_EX0) for disconnected-tiles special case.
107    o model/src (CG-solvers):
108     - modify Single-Reduction version (CG2D_SR) in case cg2dMaxIters is reached
109       (similar final residual output and max-Iter number as with standard version);
110     - allows to store and use lowest-residual solution (standard & _SR versions);
111     - cleaning up (remove old, commented out code, LETS_MAKE_JAM ...).
112     - by default, also compile CG2D_SR version (define ALLOW_SRCG in CPP_OPTIONS.h)
113    o eesup/src:
114     - global_vec_sum.F cleaning: add a BARRIER ; update comments ; remove ndef
115       ALWAYS_USE_MPI (no longer needed after fixing usingMPI settings - March 2012)
116    o pkg/salt_plume added to lab_sea/input_ad.noseaicedyn
117    
118    checkpoint63m (2012/04/27)
119    o pkg/shelfice:
120     - account for partical cells in surface level below ice-shelf for hydrostatic
121       pressure calculion (set uniformFreeSurfLev to F); update isomip experiments.
122    o ad test experiments:
123     - update and rename to "ad_optfile.local" local AD-optfile specific to a
124       particular adjoint verification experiment (in verification/*/code_ad/)
125    o pkg/seaice & pkg/exf:
126     - Part two of ECCO-CLIVAR code merges.
127       Completes merge of seaice area relax. code.
128       Requires unified CPP option EXF_ALLOW_SEAICE_RELAX
129       to be set in EXF_OPTIONS.h since this pkg controls its I/O
130       (and avoids second CPP option in SEAICE_OPTIONS.h)
131     - change default value of costIceStart & costIceEnd to a valid date.
132     - add snowPrecip to HSNOW in seaice_growth
133    o pkg/ptracers:
134     - move ptracers summary and setup check into separated S/R ; add a check for
135       valid PTRACERS_Iter0 value (error+stop or just warning).
136    o pkg/cal (+ pkg/ecco):
137     - avoid calling a S/R with 2 times the same arg (FWD: unless both are only used
138       as input; and for AD, unless both are not differentiable (e.g., k index)).
139    o model/src:
140     - define internal flag "uniformFreeSurfLev" (=T when free-surface level-index
141       is everywhere k=1) to speed-up some calculations (by pass kSurf reference);
142       temporary set to usingZCoords value (to be changed to F when using shelfice).
143     - hydrostatic pressure: implement partial cell near the surface also for
144       Z-coordinates (for the case where uniformFreeSurfLev=F); replace test on
145       usingZCoords with test on uniformFreeSurfLev where needed (in NonHyd code).
146    o pkg/ctrl/ctrl_init.F:
147     - add a formal parameter to s/r ctrl_init_rec to print
148       xx_$(ctrl_valiable)_file for easier debugging
149     - move call of cal_* routines into the if-block where they are really
150       needed so that xx_$(ctrl_variable)_period can be 0 or -12 without having
151       to specify a startdate
152    o pkg/seaice:
153     - update comments in SEAICE_OPTIONS.h (+ similar update of lab_sea/code and
154       global_ocean.cs32x15/code versions).
155     - turn on seaice Multi-category (in data.seaice, SEAICE_multDim=7) for
156       verification experiment global_ocean.cs32x15.seaice and update results.
157    o pkg/exf:
158     - new S/R EXF_GETFIELD_START to return starting-time of a forcing field
159       (according to useExfYearlyFields).
160    o pkg/cal:
161     - move calendar setting & summary (previously in cal_readparams.F) into new
162       S/R CAL_INIT_FIXED to be called later in the initialisation process, once
163       length of the simulation is set (after SET_PARMS call); This is an attempt
164       to fix Pb when, e.g.: pkg/longstep, modifies the length of the run.
165     - For safety: keep a record of pkg/cal parameter settings status
166               to allow to STOP if one pkg/cal S/R is called too early.
167     - add a stop in all basic pkg/cal subroutines if called before setting is done.
168     - modify cal_getdate.F: stop when nothing was returned;
169       if called with myIter=-1, simply retrun modelBaseDate (1,2 = startDate_1,_2);
170       this allows to remove "cal.h" from seaice_read_parms.F & init_mnc_vars.F.
171    
172    checkpoint63l (2012/04/04)
173    o pkg/bbl:
174      - fix call to FIND_RHO_2D in bbl_calc_rho.F (case multi-tiles per proc);
175        update global_with_exf output.yearly.txt file.
176    o pkg/cal:
177      - start to clean-up cal_set.F ; fix for the case where baseTime is non-zero.
178      - remove 2 unsused and very short (1 line only) functions ;
179      - remove unsused subroutines from AD-Diff list.
180    o model/src:
181      - start to implement clean wait to stop in initialization S/R (config_check.F,
182         packages_check.F, ini_parms.F and pkg/obcs/obcs_check.F + pkg/mypackage)
183    o folowing PRINT_MESSAGE changes:
184      - remove reminder multiple print to the same file (STDOUT) when multi-threads.
185    o pkg/bbl:
186      - modification so it can work with z*
187      - replace deltaT with dTtracerLev(k) for asynchronous time stepping
188      - global_with_exf/input.yearly verification; changes output.yearly.txt
189    o eesupp/src:
190      - PRINT_MESSAGE: use OpenMP critical instruction (similar to PRINT_ERROR);
191        writing to unit 0 (if unit=errorMessageUnit) extended to the case myThid=1
192      - CHECK_THREADS: specific code if using OpenMP threading: improve checking of
193        # of threads across processors (e.g., different env OMP_NUM_THREADS setting)
194      - improve special preliminary call to EESET_PARMS (if eedata is read 2 times).
195      - when using MPI, always set usingMPI=T ; set default accordingly and stop
196        if not consistent.
197      - ALL_PROC_DIE: add a BARRIER after MPI_FINALIZE call ; skip this when thread
198        argument is zero (in case called within single-thread section).
199    o pkg/fizhi:
200        clean-up turbulence cold-start switch: decided in fizhi_init_vars.F, stored
201        in common bloc (fizhi_coms.h) and then passed as argument up to S/R TURBIO.
202    o pkg/exch2:
203      - add argument "updateCorners" to S/R exch2_get_uv_bounds (enable to
204        activate EXCH_IGNORE_CORNERS in vector EXCH S/R).
205      - switch 1rst EXCH call to IGNORE_CORNERS (instead of UPDATE_CORNERS)
206        but keep the 2nd with UPDATE_CORNERS: this prevents overwriting good data
207        with bad ones coming from a not-yet-updated halo.
208        This should fix the problem when sNx <> sNy and GCD(sNx,sNy) < 2*Olx.
209    o pkg/frazil:
210        move FrzForcT diag from frazil_diagnostics_state.F to frazil_calc_rhs.F
211        http://mitgcm.org/pipermail/mitgcm-devel/2012-March/005384.html
212    o model/src/config_check.F: add a check for OLx>sNx/OLy>sNy
213    o verification/lab_sea
214      * #undef SEAICE_EXCLUDE_FOR_EXACT_AD_TESTING
215      * #define ALLOW_SST_CONTROL & ALLOW_SST_CONTROL
216      * nTimeSteps 3 -> 4
217      * changed reference output accordingly
218    o pkg/ctrl:
219      * fix ctrl_get_gen for xx_sst, xx_sss
220    o pkg/fizhi:
221      - fix 2 calls to S/R GRD2MSC (argument igrd) in update_earth_exports.F
222        update results of exp. fizhi-cs-32x32x40 (fail with only 6 digits for cg2d)
223      - by default, use new version of S/R GETPWHERE (#define TRY_NEW_GETPWHERE);
224        fix few out-of-bounds indices in referencing vars (initialise igrd to 1);
225        clean-up fizhi_turb.F (remove unused & uninitialised qdiaglsm array).
226    o pkg/gmredi:
227      - add diagnostic of Redi (main diagnonal) vertical diffusive flux of Temp
228    o pkg/fizhi:
229      - fix few initialisation and multi-tile Pb: aqualev & gridalt now pass the
230        (old)aces open64 tuv test.
231    o pkg/icefront: fix bug and reorder loop in icefront_init_varia.F
232    o pkg/mom_vecinv:
233      - fix 1 loop range in mom_vecinv.F to be like all the other loops which
234        set/update gu,gv/Diss (fix Pb of uninitialised fVerUkp in admom_vecinv
235        with non-lin free-surf).
236    o model/src: move k-loop outside of i/j-loops when (re-)computing R_low
237      in ini/update_masks_etc.F in order to avoid -O3 optimization problems with
238      some compilers (gfortran 4.6.0 on MacOS)
239    o momentum:
240      - separate fVer?(:,:,kUp) & fVer?(:,:,kDown) in argument list of MOM_FLUXFORM
241        & MOM_VECINV subroutines (to help TAF). This fixes Pb of uninitialised
242        fVer?(kUp) in admom_fluxform with non-lin free-surf or bottom control.
243    
244    checkpoint63k (2012/03/17)
245    o model/src:
246       - selectAddFluid (ALLOW_ADDFLUID): add missing term in horizontal momentum
247         flux-form (mom_fluxform.F) and vertical momentum (calc_gw.F) equations.
248       - SOLVE_DIAGONAL: switch default to use adjoinable & vectorized version
249         (#undef SOLVE_DIAGONAL_LOWMEMORY); update output of exp. front_relax.bvp.
250    o model/src: solve_*diagonal.F
251       - replace division with multiplication by inverse (similar to original version)
252         update output of AD exp. global_ocean.90x40x15.
253       - fix pkg/gmredi/gmredi_calc_psi_bvp.F & pkg/ggl90/ggl90_calc.F
254         to enable the use of the vectorized & differentiable solve_tridiagonal.F
255       - test exp. global_ocean.90x40x15/input_ad: switch to advection scheme 20 for
256         vertical advection (to get solve_tridiagonal tested in AD mode).
257    o pkg/seaice: ECCO-CLIVAR merge:
258      1. seaice AREA relaxation
259         * CPP option: SEAICE_ALLOW_AREA_RELAXATION
260         * runtime flag: SEAICE_tauAreaObsRelax
261      2. modified global mean cost imbalance code: CPP option
262          ALLOW_SSH_GLOBMEAN_COST_CONTRIBUTION
263    o another iteration on solve_*diagonal.F
264       Make choices independent of AUTODIFF
265       Default will be the adjoinable vectorized version.
266       Alternative choices are:
267       * non-adjoinable original version with low memory footprint:
268         #define SOLVE_DIAGONAL_LOWMEMORY
269       * still adjoinable but does not vectorize (k as inner-most loop):
270         #define SOLVE_DIAGONAL_KINNER (keeping SOLVE_DIAGONAL_LOWMEMORY undef)
271    o testreport
272     - add option to use a home made wrapper around "make"
273     - remove MITGCM_IEEE env. variable (no longer active)
274    o pkg/shelfice
275     - improve computation of friction velocity for velocity dependent
276       exchange coefficients: include velocities into SHELFICEBoundaryLayer
277       block to average velocities vertically
278     - add TAF store directives for SHI_ALLOW_GAMMAFRICT
279    o Modify diagonal solvers, now three versions (upon request):
280      #ifndef SOLVE_DIAGONAL_AUTODIFF
281        1. default version (dating back a while ago)
282      #else /* def SOLVE_DIAGONAL_AUTODIFF */
283      # ifdef SOLVE_DIAGONAL_KINNER
284        2. adjoinable version with k-innermost loop (G. Forget)
285      # else
286        3. adjoinable vectorized version of 2.
287      # endif
288      #endif /* SOLVE_DIAGONAL_AUTODIFF */
289      All flags are currently set within routines, but could/should be moved to CPP-options.
290      Array bounds for 1. are as before, for 2.,3. cover the entire domain
291      (could be changed for 1. too).
292    o verification/lab_sea (fwd):
293      - update the 4 fwd lab_sea test experiment: no longer SEAICE_GROWTH_LEGACY,
294        use 7 categories (except hb87), new solve4temp params (except salt_plume),
295        constant salinity (=4) or variable salinity (salt_plume) done through
296        SItracer.
297    o pkg/seaice:
298      - rename parameters: SIsalFrac to SEAICE_saltFrac & SIsal0 to SEAICE_salt0;
299      - remove old parameters ( SEAICE_freeze, SEAICEturbFluxFormula, SEAICE_gamma_t,
300         SEAICE_gamma_t_frz, SEAICE_availHeatTaper & SEAICE_availHeatFracFrz)
301        from SEAICE_PARMS.h ; still need to fix seaice_cost_sst.F (broken when
302        SEAICE_freeze got retired) but already better than previously with
303        SEAICE_freeze=123456.7 deg.C;
304      - move setting of facOpenGrow/Melt from SEAICE_INIT_FIXED to SEAICE_READPARMS
305        (safer multi-threaded setting); always set SEAICEuseEVP;
306      - setting of ocean-ice turb. flux coeff: moved from SEAICE_CHECK to
307        SEAICE_READPARMS & SEAICE_INIT_FIXED (this fixes wrong summary report);
308        stop if multiple specifications for the same coeff; make sure default
309        SEAICE_mcPheePiston is compatible with drF(1) & deltaT.
310    o pkg/obcs:
311      - allow to switch to upwind 1rst order advection scheme for the advective
312        flux computation at the open-boundary; disabled for adjoint built.
313    o pkg/ptracers:
314      - rename PTRACERS_RESTART.h -> PTRACERS_START.h
315      - rename ptracers_fields_blocking_exchanges.F -> ptracers_fields_blocking_exch.F
316      - add parameter to decide when to start a tracer; use internal flag to
317        know which tracer to step-forward; switch this internal flag at the top
318        of forward_step.F (new S/R PTRACERS_SWITCH_ONOFF); for now, not enabled
319        for adjoint built.
320    o pkg/seaice:
321      - add SEAICE_SIZE.h anywhere in the code where SEAICE.h is included ;
322      - move MULTDIM declaration and setting from SEAICE.h to SEAICE_SIZE.h ;
323      - keep experiment offline_exf_seaice truly single category (set MULTDIM=1).
324    o pkg/ecco:
325      - fix writing of output file DiagnosCost_ClimSalt/Theta
326        and DiagnosCost_DriftSalt/Theta (if multi-tiles per proc).
327    o pkg/seaice:
328      - add missing initialisation of COR_ICE array in dynsolver.F
329      - merging SEAICE_MULTICATEGORY define and undef cases. Now the same code is
330        compiled either way, and is tested in all exps (multidim was only tested
331        in lab_sea ad before).
332      - cosmetic change to prepare for future addition of ITD. no change to results.
333        no defaults change.
334      - added run time param SEAICE_multDim (7 for SEAICE_MULTICATEGORY, 1 otherwise).
335      - by lack of adequate verification experiments, I further used custom versions
336        of global_ocean.cs32x15 to test multicat or not, with pickup or not. All
337        should be correct.
338      - avoid recomputations in ad.
339    o array initialisation in adjoint mode:
340      1) pkg/mom_common/mom_calc_ke.F:
341        add full array initialisation of KE inside mom_calc_ke.F (ALLOW_AUTODIFF_TAMC):
342        The S/R which calls MOM_CALC_KE initialises KE but in some recomputation
343        part this initialisation is gone, resulting in Floating Point Exception
344        (caught by open64 compiler with debug option).
345      2) model/src/convective_weights.F
346        set output convectCount over the full array range (instead of doing
347        an update): this fix a similar issue when called within recomputation (adjoint)
348        which could by-pass the initialisation (normally done in the caller S/R).
349    o pkg/seaice:
350      - final version of turbulent flux params, as agreed at MIT ice meet:
351           SEAICE_mcPheePiston (default is ~ 0.000875)
352           SEAICE_mcPheeTaper (default is 0.)
353           SEAICE_frazilFrac (defualt is 1.)
354           SEAICE_mcPheeStepFunc (default is false)
355      - changes results at trunction error level
356      - ifdef SEAICE_EXTERNAL_FLUXES, disallow SEAICE_waterAlbedo
357    o added pkg/frazil:
358      - see frazil_description.tex for details
359      - verification experiment is global_with_exf/input.yearly; changes output.yearly.txt
360    o pkg/shelfice/shelfice_thermodynamics.F
361      - fix exponents for velocity dependent exchange coefficients: change
362        from 2/3(=0) to 0.66666666666666667
363      - move computation of velocity dependent exchange coefficients into
364        separate loop, so that it applies to both thermodynamics
365      - move some divisions by constants out of loops
366    
367    checkpoint63j (2012/02/16)
368    o pkg/seaice:
369      - overhaul of seaice_summary.F after feb 2012 clean-up of seaice_growth.F etc.
370      - SItracer:  added run time params, and allow coupling to ocn salinity.
371    o pkg/seaice: remove (almost) all divisions by constants within loops
372      in seaice_growth.F and seaice_solve4temp.F, this changes (only) the cg2d
373      results of global_ocean.cs32x15.seaice from 16 to 11 digits (but only
374      those, caused by 1/QI -> recip_QI) -> update output.seaice.txt,
375      output_adm.seaice_dynmix.txt and also lab_sea: output_adm.evp.txt
376    o pkg/seaice :
377      - simplify McPhee tapering, and allow to use it with SEAICEturbFluxFormula
378        = 1 or 2, using newly added run time parameter SEAICE_availHeatTaper.
379      - fix d_AREAbyATM, d_AREAbyOCN, d_AREAbyICE diags I broke in r1.148.
380      - add permanent SItflux diag that corresponds to TFLUX but includes
381        ice+snow. Hence SItflux-TFLUX should match the ice+snow heat budget.
382      - allow activation/testing of a fix for suspected missing term in
383        ocn-ice heat budget (to be confirmed). To test this, you want to
384        undef SEAICE_DISABLE_HEATCONSFIX, and then set the run time param
385        SEAICEheatConsFix to .TRUE. that also allows the 'SIaaflux' diagnostic.
386      - no change in results, fwd or ad.
387    o global_ocean.cs32x15/results: 3 changes following from the pkg/seaice commit below:
388      - switch to variable freezing point.
389           Results change : cg2d -> 1 digits; ad -> 3-6-6 digits.
390      - bug fix : the sublimation term that was missing is now activated.
391           Results change : cg2d -> 2 digits; ad -> 8-6-6 digits.
392      - bug fix : flooding sign term for SIsal0.NE.0.
393           Result change : cg2d -> 8 digits; ad -> 11-12-9 digits.
394    o pkg/seaice:
395      - unified freezing point treatment : the old SEAICE_VARIABLE_FREEZING_POINT
396        is now the default, and the old default constant freezing point is recovered
397        with SEAICE_tempFrz0    = -1.96,
398             SEAICE_dTempFrz_dS = 0.,
399      - retire SEAICE_freeze (= the old way of specifycing the constant freezing point)
400      - remove ALLOW_SEAICE_FLOODING brackets; run time switch is already there.
401      - bug fix (thanks to M. Losch) : the sublimation term that was missing is now
402        activated. To reproduce old results with this bug define SEAICE_DISABLE_SUBLIM.
403      - bug fix (silly me) : flooding sign term (seaice_growth.F r 1.149line 1211)
404        was wrong for SIsal0.NE.0. Changes cs32x15 results (see above item for detail).
405      - bug fix (thanks to O. Jahn) : area loss for melting  got messed up in
406        seaice_growth r149 for legacy branch (no results change).
407      - introduce SEAICE_CAP_SUBLIM : caps sublimation heat flux in solve4temp (code
408        from I. Fenty).
409      - results did not change except for global_ocean.cs32x15, mostly due to the
410        switch to variable freezing point (see above item for detail).
411    o pkg/thsice:
412      - fix and simplify interface to salt_plume pkg ; diagnose directly amount of
413        seawater freezing in thsice_calc_thickn (not used).
414    o pkg/seaice: turbulent flux term specification via run time params.
415      - replace CPP switches with run time switches to facilitate testing
416      - retired CPPs : MCPHEE_OCEAN_ICE_HEAT_FLUX,
417                       GRADIENT_MIXED_LAYER_TURBULENCE_FACTOR
418      - added runtime parameter : SEAICEturbFluxFormula
419      - move Mcphee constants to SEAICE_PARAMS.h
420      - seaice_readparms.F : read turbulent flux term params (SEAICEturbFluxFormula;
421                 SEAICE_availHeatFrac/Frz, or SEAICE_gamma_t/_frz if apply);
422                 remove seaice_summary call (moved to seaice_init_fixed)
423      - seaice_init_fixed.F : set SEAICE_availHeatFrac/Frz depending on
424        SEAICEturbFluxFormula, and seaice_summary call (moved from seaice_readparms)
425      - seaice_summary.F : add missing report of read turbulent flux term set up
426                           and SITRACER.
427      - seaice_check.F : check range; inform and stop if retired CPPs are used
428                         (incl. SEAICE_AGE).
429      - seaice_growth.F : unified use of SEAICE_availHeatFrac/Frz, without
430             CPP switch, same computation as before for the different options.
431      - change results at the truncation level.
432    o pkg/seaice:
433      - remove un-used parameters LAD & MAX_TICE ; add new run-time parameters:
434        useMaykutSatVapPoly (default=F), postSolvTempIter (default=2) and
435        SEAICE_wetAlbTemp (default=-1e-3). Remove option SEAICE_SOLVE4TEMP_LEGACY.
436      - update verification/*/input*/data.seaice:
437        to reproduce previous results with former #defined SEAICE_SOLVE4TEMP_LEGACY
438        code, set useMaykutSatVapPoly=T & postSolvTempIter=0 ;
439        and to reproduce previous results with former non-SOLVE4TEMP_LEGACY code,
440        set SEAICE_wetAlbTemp=0 & SEAICE_snowThick=0.
441    o pkg/seaice/seaice_solve4temp.F (SOLVE4TEMP_LEGACY):
442      - remove LEGACY code for solving for tsurf (A1,A2,A3) but maintain the same
443        algorithm (same choice: useMaykutPolySatVap=T, postSolvTempIter=0);
444        difference in results only due to machine truncation.
445      - remove MAX_TICE (tsurf is always =< TMELT anyway); keep MIN_TICE if using
446        MaykutPolySatVap; keep MIN_LWDOWN.
447      - adapt SEAICE_MODIFY_GROWTH_ADJ code (untested) to non-legacy formulation.
448      - update output of verification exp. lab_sea (4 fwd: 11 cg2d digits except hb87,
449        + 3 AD: 6 digits except evp) and offline_exf_seaice.seaice (12 digits).
450    o pkg/salt_plume:
451      - isolate saltPlumeFlux array exch into a specific S/R called from
452        do_oceanic_phys.F
453      - add interface to pkg/salt_plume (filling of saltPlumeFlux) in pkg/thsice.
454    o verification:
455      - move untested set-up to MITgcm_contrib/verification_other.
456    o pkg/seaice:
457      - retire old way of SEAICE_AGE. Now replaced with ALLOW_SITRACER.
458    o pkg/seaice:
459      - seaice_solve4temp.F (keeping results unchanged):
460        * add 2 future run-time params to select which saturation vapor pressure
461          formula is used and how post-iteration fluxes are set.
462          Temporary set these 2 params according to option SOLVE4TEMP_LEGACY;
463        * New piece of code (not used) to update surf. atmos. heat flux F_ia using
464          the linearized expression to stay consistent with tsurf finding.
465      - seaice_freedrift.F avoid floating exception in sqrt(y) since y=sqrt(x*x)-x
466        can be < 0.
467    o pkg/seaice/seaice_solve4temp.F (SOLVE4TEMP_LEGACY undef):
468      - remove from F_ia (and from it's derivative dFiDTs1) the contribution of
469        conductive heat flux F_c , and add it explicitly when updating tsurf as
470        solution of: Fc = Fia + d/dT(Fia - Fc) *delta.tsurf
471        so that now F_ia has a consistent meaning through the entire routine.
472        This causes differences at truncation level: update output of fwd exp.
473        global_ocean.cs32x15.seaice.
474    o pkg/seaice:
475      - lots of editing/cleaning in seaice_solve4temp.F + better documentation
476        of arrays, sign/direction of fluxes; no effect on results.
477      - replace hard coded 273.16 (=previous value of celsius2K) by celsius2K
478        in seaice_budget_ocean.F & seaice_solve4temp.F (SOLVE4TEMP_LEGACY part);
479        note: this should have been done before changing celsius2K default.
480      - to keep results unchanged, add back old value of celsius2K in verification
481        exp. input*/data : lab_sea (AD), offline_exf_seaice (fwd+AD) & seaice_obcs
482      - replace hard coded seawater freezing temp in seaice_solve4temp.F (part
483        SOLVE4TEMP_LEGACY) of 271.20 (=previous value of celsius2K + default
484        value of SEAICE_freeze) by celsius2K+SEAICE_freeze so that seawater
485        freezing temp is consistent with value in seaice_growth.F ; this causes
486        differences at machine truncation level: update lab_sea AD output (3/4).
487    o pkg/seaice:
488      - mask (in exf_init_fixed.F) atemp,aqh,evap,precip,runoff,lwflx,areamask
489        and climsst/sss even when using seaice (to prevent calculation that might
490        use SST on land); does not affect any verification exp.
491      - apply mask to taux,tauy (in seaice_get_dynforcing.F); update output
492        of lab_sea.fd & lab_sea.hb87 and global_ocean.cs32x15.seaice_dynmix.
493    o pkg/seaice/seaice_growth.F: add mask to avoid non-zero ice thickness
494      over land (non-legacy code)
495    o vectorize salt_plume package:
496      - add extra code to salt_plume_frac and salt_plume_tendency_apply_s
497      - this code computes plumebk everywhere (also over land), thus requires
498        code to avoid divisions by zero and catch the case of kLev=Nr.
499      - efficiency of salt_plume_frac is still sub-optimal
500    o tools (genmake2):
501      - fix makefile NAME specification (option: -makefile NAME) by adding
502        "-f $MAKEFILE" in few places where it was missing including makedepend
503        command (contribution from Paul).
504    
505    checkpoint63i (2012/01/24)
506    o model/src:
507      - add factorized versions of some EOS code to find_rho.F,
508      define USE_FACTORIZED_EOS to turn it on (default for TARGET_NEC_SX)      define USE_FACTORIZED_EOS to turn it on (default for TARGET_NEC_SX)
509    o model/src:
510    - add celsius2K to namelist PARM01; remove unused recip_rhoNil from PARAMS.h;    - add celsius2K to namelist PARM01; remove unused recip_rhoNil from PARAMS.h;
511    - change default celsius2K from 273.16 to 273.15    - change default celsius2K from 273.16 to 273.15
512    - to keep results unchanged, add back old value of celsius2K in verification    - to keep results unchanged, add back old value of celsius2K in verification
513      exp. input*/data : aim.5l_cs, 1D_ocean_ice_column, lab_sea (fwd) &      exp. input*/data : aim.5l_cs, 1D_ocean_ice_column, lab_sea (fwd),
514       global_ocean.cs32x15(seaice).       global_ocean.cs32x15(seaice) & cpl_aim+ocn(input_atm).
515  o model/src: add a little initialisation trick to find_rho.F and find_alpha.F  o model/src: add a little initialisation trick to find_rho.F and find_alpha.F
516    to make TAF generate vectorizable code    to make TAF generate vectorizable code
517  o pkg/seaice/seaice_evp.F: add code (copied from CICE) that avoids underflows.  o pkg/seaice/seaice_evp.F: add code (copied from CICE) that avoids underflows.
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