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revision 1.1573 by jmc, Sat Jan 14 16:41:36 2012 UTC revision 1.1674 by jmc, Mon Jun 25 16:13:38 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 tools/genmake2:
8      - add "-DHAVE_NETCDF" to the DEFINES list when NetCDF is available ;
9        refine usePROFILES switching off (only when NetCDF is not available).
10    o verification (atmospheric set-up):
11      - change eosType='IDEALGAS' to eosType='IDEALG' to match variable declaration
12    o pkg/profiles : refine profiles and files handling.
13    o model/src and pkg/ecco : introduce run-time switch usePROFILES.
14    o model/src/the_main_loop.F, forward_step.F and pkg/exf/EXF_OPTIONS.h :
15      - changes to use model/src/the_main_loop.F rather than the ecco version
16        in ecco type adjoint runs.
17    o model/src:
18      - move computation of recip of grid distance & area from INI_MASKS_ETC to INI_GRID
19      - move setting of h0Fac[C,W,S] from INI_LINEAR_PHISURF to INI_MASKS_ETC
20      - update_masks_etc.F: rename SMOOTH*_R4,R8 function to the corresponding type (RS,RL)
21    o model/src:
22      - fix S/R UPDATE_CG2D for ALLOW_DEPTH_CONTROL case (was empty before);
23        update output of test experiment bottom_ctrl_5x5.
24    o pkg/generic_advdiff:
25      - implement vertical bi-harmonic diffusion (for now, only for T & S and
26        only explicitly).
27    o verification/bottom_ctrl_5x5/
28      update reference output (results changed quite some time ago,
29      not sure when; but new reference results look ok in terms of grdchk)
30    o verification/1D_ocean_ice_column/
31      For verification purposes, the exact adjoint rather than an approx.
32      should be used (e.g., to comare against F.D. or TLM).
33      removed autodiff_inadmode*_ad.F routines in code_ad/
34      Update results/ accordingly.
35    o pkg/cal:
36      - change cal_getdate.F so that output date is function of input time only
37        (less ambiguous, not mixed up with input iteration number).
38      - fix calendarDumps for non-zero phase-lag (S/R CAL_TIME2DUMP).
39    o pkg/diagnostics:
40      - implement calendarDumps also for stats-diags
41      - implement calendarDumps also for snap-shot output (negative freq)
42      - for now, ignores calendarDumps if non-zero phase-lag.
43    
44    checkpoint63n (2012/06/04)
45    o model/src:
46      - recompute rSurfW & S to ensure consistent column thickness (needed for rStar)
47        between Sum_k(hFac*drF) and rSurf-rLow, for now only when using pkg/shelfice;
48      - use h0FacC, W & S to compute hFac_surfC, W & S in calc_surf_dr.F (more
49        similar to calc_r_star.F); update results of experiment internal_wave and
50        tutorial_global_oce_in_p (affected @ truncation level).
51    o pkg/shelfice:
52      - add parameterisation of advective-diffusive flux into the ice shelf
53        according to Holland and Jenkins (1999), eq.22-33, as suggested by Jan De Ryd
54      - simply eps3/3a computation
55    o eesupp:
56     - add new CPP option (DISCONNECTED_TILES) to disconnect tiles (no exchange
57       between tiles, just fill-in edges assuming locally periodic subdomain) and
58       add corresponding exchange subroutines (EXCH0);
59     - new CG-solver version (_EX0) for disconnected-tiles special case.
60    o model/src (CG-solvers):
61     - modify Single-Reduction version (CG2D_SR) in case cg2dMaxIters is reached
62       (similar final residual output and max-Iter number as with standard version);
63     - allows to store and use lowest-residual solution (standard & _SR versions);
64     - cleaning up (remove old, commented out code, LETS_MAKE_JAM ...).
65     - by default, also compile CG2D_SR version (define ALLOW_SRCG in CPP_OPTIONS.h)
66    o eesup/src:
67     - global_vec_sum.F cleaning: add a BARRIER ; update comments ; remove ndef
68       ALWAYS_USE_MPI (no longer needed after fixing usingMPI settings - March 2012)
69    o pkg/salt_plume added to lab_sea/input_ad.noseaicedyn
70    
71    checkpoint63m (2012/04/27)
72    o pkg/shelfice:
73     - account for partical cells in surface level below ice-shelf for hydrostatic
74       pressure calculion (set uniformFreeSurfLev to F); update isomip experiments.
75    o ad test experiments:
76     - update and rename to "ad_optfile.local" local AD-optfile specific to a
77       particular adjoint verification experiment (in verification/*/code_ad/)
78    o pkg/seaice & pkg/exf:
79     - Part two of ECCO-CLIVAR code merges.
80       Completes merge of seaice area relax. code.
81       Requires unified CPP option EXF_ALLOW_SEAICE_RELAX
82       to be set in EXF_OPTIONS.h since this pkg controls its I/O
83       (and avoids second CPP option in SEAICE_OPTIONS.h)
84     - change default value of costIceStart & costIceEnd to a valid date.
85     - add snowPrecip to HSNOW in seaice_growth
86    o pkg/ptracers:
87     - move ptracers summary and setup check into separated S/R ; add a check for
88       valid PTRACERS_Iter0 value (error+stop or just warning).
89    o pkg/cal (+ pkg/ecco):
90     - avoid calling a S/R with 2 times the same arg (FWD: unless both are only used
91       as input; and for AD, unless both are not differentiable (e.g., k index)).
92    o model/src:
93     - define internal flag "uniformFreeSurfLev" (=T when free-surface level-index
94       is everywhere k=1) to speed-up some calculations (by pass kSurf reference);
95       temporary set to usingZCoords value (to be changed to F when using shelfice).
96     - hydrostatic pressure: implement partial cell near the surface also for
97       Z-coordinates (for the case where uniformFreeSurfLev=F); replace test on
98       usingZCoords with test on uniformFreeSurfLev where needed (in NonHyd code).
99    o pkg/ctrl/ctrl_init.F:
100     - add a formal parameter to s/r ctrl_init_rec to print
101       xx_$(ctrl_valiable)_file for easier debugging
102     - move call of cal_* routines into the if-block where they are really
103       needed so that xx_$(ctrl_variable)_period can be 0 or -12 without having
104       to specify a startdate
105    o pkg/seaice:
106     - update comments in SEAICE_OPTIONS.h (+ similar update of lab_sea/code and
107       global_ocean.cs32x15/code versions).
108     - turn on seaice Multi-category (in data.seaice, SEAICE_multDim=7) for
109       verification experiment global_ocean.cs32x15.seaice and update results.
110    o pkg/exf:
111     - new S/R EXF_GETFIELD_START to return starting-time of a forcing field
112       (according to useExfYearlyFields).
113    o pkg/cal:
114     - move calendar setting & summary (previously in cal_readparams.F) into new
115       S/R CAL_INIT_FIXED to be called later in the initialisation process, once
116       length of the simulation is set (after SET_PARMS call); This is an attempt
117       to fix Pb when, e.g.: pkg/longstep, modifies the length of the run.
118     - For safety: keep a record of pkg/cal parameter settings status
119               to allow to STOP if one pkg/cal S/R is called too early.
120     - add a stop in all basic pkg/cal subroutines if called before setting is done.
121     - modify cal_getdate.F: stop when nothing was returned;
122       if called with myIter=-1, simply retrun modelBaseDate (1,2 = startDate_1,_2);
123       this allows to remove "cal.h" from seaice_read_parms.F & init_mnc_vars.F.
124    
125    checkpoint63l (2012/04/04)
126    o pkg/bbl:
127      - fix call to FIND_RHO_2D in bbl_calc_rho.F (case multi-tiles per proc);
128        update global_with_exf output.yearly.txt file.
129    o pkg/cal:
130      - start to clean-up cal_set.F ; fix for the case where baseTime is non-zero.
131      - remove 2 unsused and very short (1 line only) functions ;
132      - remove unsused subroutines from AD-Diff list.
133    o model/src:
134      - start to implement clean wait to stop in initialization S/R (config_check.F,
135         packages_check.F, ini_parms.F and pkg/obcs/obcs_check.F + pkg/mypackage)
136    o folowing PRINT_MESSAGE changes:
137      - remove reminder multiple print to the same file (STDOUT) when multi-threads.
138    o pkg/bbl:
139      - modification so it can work with z*
140      - replace deltaT with dTtracerLev(k) for asynchronous time stepping
141      - global_with_exf/input.yearly verification; changes output.yearly.txt
142    o eesupp/src:
143      - PRINT_MESSAGE: use OpenMP critical instruction (similar to PRINT_ERROR);
144        writing to unit 0 (if unit=errorMessageUnit) extended to the case myThid=1
145      - CHECK_THREADS: specific code if using OpenMP threading: improve checking of
146        # of threads across processors (e.g., different env OMP_NUM_THREADS setting)
147      - improve special preliminary call to EESET_PARMS (if eedata is read 2 times).
148      - when using MPI, always set usingMPI=T ; set default accordingly and stop
149        if not consistent.
150      - ALL_PROC_DIE: add a BARRIER after MPI_FINALIZE call ; skip this when thread
151        argument is zero (in case called within single-thread section).
152    o pkg/fizhi:
153        clean-up turbulence cold-start switch: decided in fizhi_init_vars.F, stored
154        in common bloc (fizhi_coms.h) and then passed as argument up to S/R TURBIO.
155    o pkg/exch2:
156      - add argument "updateCorners" to S/R exch2_get_uv_bounds (enable to
157        activate EXCH_IGNORE_CORNERS in vector EXCH S/R).
158      - switch 1rst EXCH call to IGNORE_CORNERS (instead of UPDATE_CORNERS)
159        but keep the 2nd with UPDATE_CORNERS: this prevents overwriting good data
160        with bad ones coming from a not-yet-updated halo.
161        This should fix the problem when sNx <> sNy and GCD(sNx,sNy) < 2*Olx.
162    o pkg/frazil:
163        move FrzForcT diag from frazil_diagnostics_state.F to frazil_calc_rhs.F
164        http://mitgcm.org/pipermail/mitgcm-devel/2012-March/005384.html
165    o model/src/config_check.F: add a check for OLx>sNx/OLy>sNy
166    o verification/lab_sea
167      * #undef SEAICE_EXCLUDE_FOR_EXACT_AD_TESTING
168      * #define ALLOW_SST_CONTROL & ALLOW_SST_CONTROL
169      * nTimeSteps 3 -> 4
170      * changed reference output accordingly
171    o pkg/ctrl:
172      * fix ctrl_get_gen for xx_sst, xx_sss
173    o pkg/fizhi:
174      - fix 2 calls to S/R GRD2MSC (argument igrd) in update_earth_exports.F
175        update results of exp. fizhi-cs-32x32x40 (fail with only 6 digits for cg2d)
176      - by default, use new version of S/R GETPWHERE (#define TRY_NEW_GETPWHERE);
177        fix few out-of-bounds indices in referencing vars (initialise igrd to 1);
178        clean-up fizhi_turb.F (remove unused & uninitialised qdiaglsm array).
179    o pkg/gmredi:
180      - add diagnostic of Redi (main diagnonal) vertical diffusive flux of Temp
181    o pkg/fizhi:
182      - fix few initialisation and multi-tile Pb: aqualev & gridalt now pass the
183        (old)aces open64 tuv test.
184    o pkg/icefront: fix bug and reorder loop in icefront_init_varia.F
185    o pkg/mom_vecinv:
186      - fix 1 loop range in mom_vecinv.F to be like all the other loops which
187        set/update gu,gv/Diss (fix Pb of uninitialised fVerUkp in admom_vecinv
188        with non-lin free-surf).
189    o model/src: move k-loop outside of i/j-loops when (re-)computing R_low
190      in ini/update_masks_etc.F in order to avoid -O3 optimization problems with
191      some compilers (gfortran 4.6.0 on MacOS)
192    o momentum:
193      - separate fVer?(:,:,kUp) & fVer?(:,:,kDown) in argument list of MOM_FLUXFORM
194        & MOM_VECINV subroutines (to help TAF). This fixes Pb of uninitialised
195        fVer?(kUp) in admom_fluxform with non-lin free-surf or bottom control.
196    
197    checkpoint63k (2012/03/17)
198    o model/src:
199       - selectAddFluid (ALLOW_ADDFLUID): add missing term in horizontal momentum
200         flux-form (mom_fluxform.F) and vertical momentum (calc_gw.F) equations.
201       - SOLVE_DIAGONAL: switch default to use adjoinable & vectorized version
202         (#undef SOLVE_DIAGONAL_LOWMEMORY); update output of exp. front_relax.bvp.
203    o model/src: solve_*diagonal.F
204       - replace division with multiplication by inverse (similar to original version)
205         update output of AD exp. global_ocean.90x40x15.
206       - fix pkg/gmredi/gmredi_calc_psi_bvp.F & pkg/ggl90/ggl90_calc.F
207         to enable the use of the vectorized & differentiable solve_tridiagonal.F
208       - test exp. global_ocean.90x40x15/input_ad: switch to advection scheme 20 for
209         vertical advection (to get solve_tridiagonal tested in AD mode).
210    o pkg/seaice: ECCO-CLIVAR merge:
211      1. seaice AREA relaxation
212         * CPP option: SEAICE_ALLOW_AREA_RELAXATION
213         * runtime flag: SEAICE_tauAreaObsRelax
214      2. modified global mean cost imbalance code: CPP option
215          ALLOW_SSH_GLOBMEAN_COST_CONTRIBUTION
216    o another iteration on solve_*diagonal.F
217       Make choices independent of AUTODIFF
218       Default will be the adjoinable vectorized version.
219       Alternative choices are:
220       * non-adjoinable original version with low memory footprint:
221         #define SOLVE_DIAGONAL_LOWMEMORY
222       * still adjoinable but does not vectorize (k as inner-most loop):
223         #define SOLVE_DIAGONAL_KINNER (keeping SOLVE_DIAGONAL_LOWMEMORY undef)
224    o testreport
225     - add option to use a home made wrapper around "make"
226     - remove MITGCM_IEEE env. variable (no longer active)
227    o pkg/shelfice
228     - improve computation of friction velocity for velocity dependent
229       exchange coefficients: include velocities into SHELFICEBoundaryLayer
230       block to average velocities vertically
231     - add TAF store directives for SHI_ALLOW_GAMMAFRICT
232    o Modify diagonal solvers, now three versions (upon request):
233      #ifndef SOLVE_DIAGONAL_AUTODIFF
234        1. default version (dating back a while ago)
235      #else /* def SOLVE_DIAGONAL_AUTODIFF */
236      # ifdef SOLVE_DIAGONAL_KINNER
237        2. adjoinable version with k-innermost loop (G. Forget)
238      # else
239        3. adjoinable vectorized version of 2.
240      # endif
241      #endif /* SOLVE_DIAGONAL_AUTODIFF */
242      All flags are currently set within routines, but could/should be moved to CPP-options.
243      Array bounds for 1. are as before, for 2.,3. cover the entire domain
244      (could be changed for 1. too).
245    o verification/lab_sea (fwd):
246      - update the 4 fwd lab_sea test experiment: no longer SEAICE_GROWTH_LEGACY,
247        use 7 categories (except hb87), new solve4temp params (except salt_plume),
248        constant salinity (=4) or variable salinity (salt_plume) done through
249        SItracer.
250    o pkg/seaice:
251      - rename parameters: SIsalFrac to SEAICE_saltFrac & SIsal0 to SEAICE_salt0;
252      - remove old parameters ( SEAICE_freeze, SEAICEturbFluxFormula, SEAICE_gamma_t,
253         SEAICE_gamma_t_frz, SEAICE_availHeatTaper & SEAICE_availHeatFracFrz)
254        from SEAICE_PARMS.h ; still need to fix seaice_cost_sst.F (broken when
255        SEAICE_freeze got retired) but already better than previously with
256        SEAICE_freeze=123456.7 deg.C;
257      - move setting of facOpenGrow/Melt from SEAICE_INIT_FIXED to SEAICE_READPARMS
258        (safer multi-threaded setting); always set SEAICEuseEVP;
259      - setting of ocean-ice turb. flux coeff: moved from SEAICE_CHECK to
260        SEAICE_READPARMS & SEAICE_INIT_FIXED (this fixes wrong summary report);
261        stop if multiple specifications for the same coeff; make sure default
262        SEAICE_mcPheePiston is compatible with drF(1) & deltaT.
263    o pkg/obcs:
264      - allow to switch to upwind 1rst order advection scheme for the advective
265        flux computation at the open-boundary; disabled for adjoint built.
266    o pkg/ptracers:
267      - rename PTRACERS_RESTART.h -> PTRACERS_START.h
268      - rename ptracers_fields_blocking_exchanges.F -> ptracers_fields_blocking_exch.F
269      - add parameter to decide when to start a tracer; use internal flag to
270        know which tracer to step-forward; switch this internal flag at the top
271        of forward_step.F (new S/R PTRACERS_SWITCH_ONOFF); for now, not enabled
272        for adjoint built.
273    o pkg/seaice:
274      - add SEAICE_SIZE.h anywhere in the code where SEAICE.h is included ;
275      - move MULTDIM declaration and setting from SEAICE.h to SEAICE_SIZE.h ;
276      - keep experiment offline_exf_seaice truly single category (set MULTDIM=1).
277    o pkg/ecco:
278      - fix writing of output file DiagnosCost_ClimSalt/Theta
279        and DiagnosCost_DriftSalt/Theta (if multi-tiles per proc).
280    o pkg/seaice:
281      - add missing initialisation of COR_ICE array in dynsolver.F
282      - merging SEAICE_MULTICATEGORY define and undef cases. Now the same code is
283        compiled either way, and is tested in all exps (multidim was only tested
284        in lab_sea ad before).
285      - cosmetic change to prepare for future addition of ITD. no change to results.
286        no defaults change.
287      - added run time param SEAICE_multDim (7 for SEAICE_MULTICATEGORY, 1 otherwise).
288      - by lack of adequate verification experiments, I further used custom versions
289        of global_ocean.cs32x15 to test multicat or not, with pickup or not. All
290        should be correct.
291      - avoid recomputations in ad.
292    o array initialisation in adjoint mode:
293      1) pkg/mom_common/mom_calc_ke.F:
294        add full array initialisation of KE inside mom_calc_ke.F (ALLOW_AUTODIFF_TAMC):
295        The S/R which calls MOM_CALC_KE initialises KE but in some recomputation
296        part this initialisation is gone, resulting in Floating Point Exception
297        (caught by open64 compiler with debug option).
298      2) model/src/convective_weights.F
299        set output convectCount over the full array range (instead of doing
300        an update): this fix a similar issue when called within recomputation (adjoint)
301        which could by-pass the initialisation (normally done in the caller S/R).
302    o pkg/seaice:
303      - final version of turbulent flux params, as agreed at MIT ice meet:
304           SEAICE_mcPheePiston (default is ~ 0.000875)
305           SEAICE_mcPheeTaper (default is 0.)
306           SEAICE_frazilFrac (defualt is 1.)
307           SEAICE_mcPheeStepFunc (default is false)
308      - changes results at trunction error level
309      - ifdef SEAICE_EXTERNAL_FLUXES, disallow SEAICE_waterAlbedo
310    o added pkg/frazil:
311      - see frazil_description.tex for details
312      - verification experiment is global_with_exf/input.yearly; changes output.yearly.txt
313    o pkg/shelfice/shelfice_thermodynamics.F
314      - fix exponents for velocity dependent exchange coefficients: change
315        from 2/3(=0) to 0.66666666666666667
316      - move computation of velocity dependent exchange coefficients into
317        separate loop, so that it applies to both thermodynamics
318      - move some divisions by constants out of loops
319    
320    checkpoint63j (2012/02/16)
321    o pkg/seaice:
322      - overhaul of seaice_summary.F after feb 2012 clean-up of seaice_growth.F etc.
323      - SItracer:  added run time params, and allow coupling to ocn salinity.
324    o pkg/seaice: remove (almost) all divisions by constants within loops
325      in seaice_growth.F and seaice_solve4temp.F, this changes (only) the cg2d
326      results of global_ocean.cs32x15.seaice from 16 to 11 digits (but only
327      those, caused by 1/QI -> recip_QI) -> update output.seaice.txt,
328      output_adm.seaice_dynmix.txt and also lab_sea: output_adm.evp.txt
329    o pkg/seaice :
330      - simplify McPhee tapering, and allow to use it with SEAICEturbFluxFormula
331        = 1 or 2, using newly added run time parameter SEAICE_availHeatTaper.
332      - fix d_AREAbyATM, d_AREAbyOCN, d_AREAbyICE diags I broke in r1.148.
333      - add permanent SItflux diag that corresponds to TFLUX but includes
334        ice+snow. Hence SItflux-TFLUX should match the ice+snow heat budget.
335      - allow activation/testing of a fix for suspected missing term in
336        ocn-ice heat budget (to be confirmed). To test this, you want to
337        undef SEAICE_DISABLE_HEATCONSFIX, and then set the run time param
338        SEAICEheatConsFix to .TRUE. that also allows the 'SIaaflux' diagnostic.
339      - no change in results, fwd or ad.
340    o global_ocean.cs32x15/results: 3 changes following from the pkg/seaice commit below:
341      - switch to variable freezing point.
342           Results change : cg2d -> 1 digits; ad -> 3-6-6 digits.
343      - bug fix : the sublimation term that was missing is now activated.
344           Results change : cg2d -> 2 digits; ad -> 8-6-6 digits.
345      - bug fix : flooding sign term for SIsal0.NE.0.
346           Result change : cg2d -> 8 digits; ad -> 11-12-9 digits.
347    o pkg/seaice:
348      - unified freezing point treatment : the old SEAICE_VARIABLE_FREEZING_POINT
349        is now the default, and the old default constant freezing point is recovered
350        with SEAICE_tempFrz0    = -1.96,
351             SEAICE_dTempFrz_dS = 0.,
352      - retire SEAICE_freeze (= the old way of specifycing the constant freezing point)
353      - remove ALLOW_SEAICE_FLOODING brackets; run time switch is already there.
354      - bug fix (thanks to M. Losch) : the sublimation term that was missing is now
355        activated. To reproduce old results with this bug define SEAICE_DISABLE_SUBLIM.
356      - bug fix (silly me) : flooding sign term (seaice_growth.F r 1.149line 1211)
357        was wrong for SIsal0.NE.0. Changes cs32x15 results (see above item for detail).
358      - bug fix (thanks to O. Jahn) : area loss for melting  got messed up in
359        seaice_growth r149 for legacy branch (no results change).
360      - introduce SEAICE_CAP_SUBLIM : caps sublimation heat flux in solve4temp (code
361        from I. Fenty).
362      - results did not change except for global_ocean.cs32x15, mostly due to the
363        switch to variable freezing point (see above item for detail).
364    o pkg/thsice:
365      - fix and simplify interface to salt_plume pkg ; diagnose directly amount of
366        seawater freezing in thsice_calc_thickn (not used).
367    o pkg/seaice: turbulent flux term specification via run time params.
368      - replace CPP switches with run time switches to facilitate testing
369      - retired CPPs : MCPHEE_OCEAN_ICE_HEAT_FLUX,
370                       GRADIENT_MIXED_LAYER_TURBULENCE_FACTOR
371      - added runtime parameter : SEAICEturbFluxFormula
372      - move Mcphee constants to SEAICE_PARAMS.h
373      - seaice_readparms.F : read turbulent flux term params (SEAICEturbFluxFormula;
374                 SEAICE_availHeatFrac/Frz, or SEAICE_gamma_t/_frz if apply);
375                 remove seaice_summary call (moved to seaice_init_fixed)
376      - seaice_init_fixed.F : set SEAICE_availHeatFrac/Frz depending on
377        SEAICEturbFluxFormula, and seaice_summary call (moved from seaice_readparms)
378      - seaice_summary.F : add missing report of read turbulent flux term set up
379                           and SITRACER.
380      - seaice_check.F : check range; inform and stop if retired CPPs are used
381                         (incl. SEAICE_AGE).
382      - seaice_growth.F : unified use of SEAICE_availHeatFrac/Frz, without
383             CPP switch, same computation as before for the different options.
384      - change results at the truncation level.
385    o pkg/seaice:
386      - remove un-used parameters LAD & MAX_TICE ; add new run-time parameters:
387        useMaykutSatVapPoly (default=F), postSolvTempIter (default=2) and
388        SEAICE_wetAlbTemp (default=-1e-3). Remove option SEAICE_SOLVE4TEMP_LEGACY.
389      - update verification/*/input*/data.seaice:
390        to reproduce previous results with former #defined SEAICE_SOLVE4TEMP_LEGACY
391        code, set useMaykutSatVapPoly=T & postSolvTempIter=0 ;
392        and to reproduce previous results with former non-SOLVE4TEMP_LEGACY code,
393        set SEAICE_wetAlbTemp=0 & SEAICE_snowThick=0.
394    o pkg/seaice/seaice_solve4temp.F (SOLVE4TEMP_LEGACY):
395      - remove LEGACY code for solving for tsurf (A1,A2,A3) but maintain the same
396        algorithm (same choice: useMaykutPolySatVap=T, postSolvTempIter=0);
397        difference in results only due to machine truncation.
398      - remove MAX_TICE (tsurf is always =< TMELT anyway); keep MIN_TICE if using
399        MaykutPolySatVap; keep MIN_LWDOWN.
400      - adapt SEAICE_MODIFY_GROWTH_ADJ code (untested) to non-legacy formulation.
401      - update output of verification exp. lab_sea (4 fwd: 11 cg2d digits except hb87,
402        + 3 AD: 6 digits except evp) and offline_exf_seaice.seaice (12 digits).
403    o pkg/salt_plume:
404      - isolate saltPlumeFlux array exch into a specific S/R called from
405        do_oceanic_phys.F
406      - add interface to pkg/salt_plume (filling of saltPlumeFlux) in pkg/thsice.
407    o verification:
408      - move untested set-up to MITgcm_contrib/verification_other.
409    o pkg/seaice:
410      - retire old way of SEAICE_AGE. Now replaced with ALLOW_SITRACER.
411    o pkg/seaice:
412      - seaice_solve4temp.F (keeping results unchanged):
413        * add 2 future run-time params to select which saturation vapor pressure
414          formula is used and how post-iteration fluxes are set.
415          Temporary set these 2 params according to option SOLVE4TEMP_LEGACY;
416        * New piece of code (not used) to update surf. atmos. heat flux F_ia using
417          the linearized expression to stay consistent with tsurf finding.
418      - seaice_freedrift.F avoid floating exception in sqrt(y) since y=sqrt(x*x)-x
419        can be < 0.
420    o pkg/seaice/seaice_solve4temp.F (SOLVE4TEMP_LEGACY undef):
421      - remove from F_ia (and from it's derivative dFiDTs1) the contribution of
422        conductive heat flux F_c , and add it explicitly when updating tsurf as
423        solution of: Fc = Fia + d/dT(Fia - Fc) *delta.tsurf
424        so that now F_ia has a consistent meaning through the entire routine.
425        This causes differences at truncation level: update output of fwd exp.
426        global_ocean.cs32x15.seaice.
427    o pkg/seaice:
428      - lots of editing/cleaning in seaice_solve4temp.F + better documentation
429        of arrays, sign/direction of fluxes; no effect on results.
430      - replace hard coded 273.16 (=previous value of celsius2K) by celsius2K
431        in seaice_budget_ocean.F & seaice_solve4temp.F (SOLVE4TEMP_LEGACY part);
432        note: this should have been done before changing celsius2K default.
433      - to keep results unchanged, add back old value of celsius2K in verification
434        exp. input*/data : lab_sea (AD), offline_exf_seaice (fwd+AD) & seaice_obcs
435      - replace hard coded seawater freezing temp in seaice_solve4temp.F (part
436        SOLVE4TEMP_LEGACY) of 271.20 (=previous value of celsius2K + default
437        value of SEAICE_freeze) by celsius2K+SEAICE_freeze so that seawater
438        freezing temp is consistent with value in seaice_growth.F ; this causes
439        differences at machine truncation level: update lab_sea AD output (3/4).
440    o pkg/seaice:
441      - mask (in exf_init_fixed.F) atemp,aqh,evap,precip,runoff,lwflx,areamask
442        and climsst/sss even when using seaice (to prevent calculation that might
443        use SST on land); does not affect any verification exp.
444      - apply mask to taux,tauy (in seaice_get_dynforcing.F); update output
445        of lab_sea.fd & lab_sea.hb87 and global_ocean.cs32x15.seaice_dynmix.
446    o pkg/seaice/seaice_growth.F: add mask to avoid non-zero ice thickness
447      over land (non-legacy code)
448    o vectorize salt_plume package:
449      - add extra code to salt_plume_frac and salt_plume_tendency_apply_s
450      - this code computes plumebk everywhere (also over land), thus requires
451        code to avoid divisions by zero and catch the case of kLev=Nr.
452      - efficiency of salt_plume_frac is still sub-optimal
453    o tools (genmake2):
454      - fix makefile NAME specification (option: -makefile NAME) by adding
455        "-f $MAKEFILE" in few places where it was missing including makedepend
456        command (contribution from Paul).
457    
458    checkpoint63i (2012/01/24)
459    o model/src:
460      - add factorized versions of some EOS code to find_rho.F,
461        define USE_FACTORIZED_EOS to turn it on (default for TARGET_NEC_SX)
462    o model/src:
463      - add celsius2K to namelist PARM01; remove unused recip_rhoNil from PARAMS.h;
464      - change default celsius2K from 273.16 to 273.15
465      - to keep results unchanged, add back old value of celsius2K in verification
466        exp. input*/data : aim.5l_cs, 1D_ocean_ice_column, lab_sea (fwd),
467         global_ocean.cs32x15(seaice) & cpl_aim+ocn(input_atm).
468    o model/src: add a little initialisation trick to find_rho.F and find_alpha.F
469      to make TAF generate vectorizable code
470    o pkg/seaice/seaice_evp.F: add code (copied from CICE) that avoids underflows.
471       Turn on by defining SEAICE_EVP_ELIMINATE_UNDERFLOWS. Most compilers
472       have flags that do this more efficiently.
473    o pkg/diagnostics/diagstats_calc.F
474      - for TARGET_NEC_SX fix the treatment of the scaling factor tmpFac=scaleFact
475    o pkg/obcs (with exch2):
476      - derive OB indices in overlap region from OB-InsideMask (in obcs_init_fixed.F)
477        and remove code (in obcs_readparms.F) which was based on EXCH of indices
478        (through buffer) and did not account for exch2 (e.g., CS-grid) topology.
479    o pkg/exf and seaice exp:
480      - change offline_exf_seaice.seaicetd test exp. to use default DIFF1 value (=0)
481        so that switching off area & heff advection flags does not affect results.
482      - change default EXF_LWDOWN_WITH_EMISSIVITY to #define in EXF_OPTIONS.h
483      - keep exp. seaice_obcs & 1D_ocean_ice_column(ad) unchanged (using #undef
484        EXF_LWDOWN_WITH_EMISSIVITY) and, using pkg/exf default emissivities, update
485        results of verification experiments: 1D_ocean_ice_column(fwd),
486        global_ocean.cs32x15.seaice(fwd+ad) & seaice_dynmix(ad), lab_sea (all 8)
487        and offline_exf_seaice (all 4).
488  o pkg/seaice:  o pkg/seaice:
489    - remove array YNEG, RIVER, TMIX (replaced by local var) from common block;    - remove array YNEG, RIVER, TMIX (replaced by local var) from common block;
490      remove also areaNm1 & hEffNm1 when SEAICE_GROWTH_LEGACY is undef.      remove also areaNm1 & hEffNm1 when SEAICE_GROWTH_LEGACY is undef.
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