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revision 1.1533 by jmc, Thu Nov 10 21:04:47 2011 UTC revision 1.1656 by jmc, Thu Apr 26 13:49:29 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/shelfice:
8     - account for partical cells in surface level below ice-shelf for hydrostatic
9       pressure calculion (set uniformFreeSurfLev to F); update isomip experiments.
10    o ad test experiments:
11     - update and rename to "ad_optfile.local" local AD-optfile specific to a
12       particular adjoint verification experiment (in verification/*/code_ad/)
13    o pkg/seaice & pkg/exf:
14     - Part two of ECCO-CLIVAR code merges.
15       Completes merge of seaice area relax. code.
16       Requires unified CPP option EXF_ALLOW_SEAICE_RELAX
17       to be set in EXF_OPTIONS.h since this pkg controls its I/O
18       (and avoids second CPP option in SEAICE_OPTIONS.h)
19     - change default value of costIceStart & costIceEnd to a valid date.
20     - add snowPrecip to HSNOW in seaice_growth
21    o pkg/ptracers:
22     - move ptracers summary and setup check into separated S/R ; add a check for
23       valid PTRACERS_Iter0 value (error+stop or just warning).
24    o pkg/cal (+ pkg/ecco):
25     - avoid calling a S/R with 2 times the same arg (FWD: unless both are only used
26       as input; and for AD, unless both are not differentiable (e.g., k index)).
27    o model/src:
28     - define internal flag "uniformFreeSurfLev" (=T when free-surface level-index
29       is everywhere k=1) to speed-up some calculations (by pass kSurf reference);
30       temporary set to usingZCoords value (to be changed to F when using shelfice).
31     - hydrostatic pressure: implement partial cell near the surface also for
32       Z-coordinates (for the case where uniformFreeSurfLev=F); replace test on
33       usingZCoords with test on uniformFreeSurfLev where needed (in NonHyd code).
34    o pkg/ctrl/ctrl_init.F:
35     - add a formal parameter to s/r ctrl_init_rec to print
36       xx_$(ctrl_valiable)_file for easier debugging
37     - move call of cal_* routines into the if-block where they are really
38       needed so that xx_$(ctrl_variable)_period can be 0 or -12 without having
39       to specify a startdate
40    o pkg/seaice:
41     - update comments in SEAICE_OPTIONS.h (+ similar update of lab_sea/code and
42       global_ocean.cs32x15/code versions).
43     - turn on seaice Multi-category (in data.seaice, SEAICE_multDim=7) for
44       verification experiment global_ocean.cs32x15.seaice and update results.
45    o pkg/exf:
46     - new S/R EXF_GETFIELD_START to return starting-time of a forcing field
47       (according to useExfYearlyFields).
48    o pkg/cal:
49     - move calendar setting & summary (previously in cal_readparams.F) into new
50       S/R CAL_INIT_FIXED to be called later in the initialisation process, once
51       length of the simulation is set (after SET_PARMS call); This is an attempt
52       to fix Pb when, e.g.: pkg/longstep, modifies the length of the run.
53     - For safety: keep a record of pkg/cal parameter settings status
54               to allow to STOP if one pkg/cal S/R is called too early.
55     - add a stop in all basic pkg/cal subroutines if called before setting is done.
56     - modify cal_getdate.F: stop when nothing was returned;
57       if called with myIter=-1, simply retrun modelBaseDate (1,2 = startDate_1,_2);
58       this allows to remove "cal.h" from seaice_read_parms.F & init_mnc_vars.F.
59    
60    checkpoint63l (2012/04/04)
61    o pkg/bbl:
62      - fix call to FIND_RHO_2D in bbl_calc_rho.F (case multi-tiles per proc);
63        update global_with_exf output.yearly.txt file.
64    o pkg/cal:
65      - start to clean-up cal_set.F ; fix for the case where baseTime is non-zero.
66      - remove 2 unsused and very short (1 line only) functions ;
67      - remove unsused subroutines from AD-Diff list.
68    o model/src:
69      - start to implement clean wait to stop in initialization S/R (config_check.F,
70         packages_check.F, ini_parms.F and pkg/obcs/obcs_check.F + pkg/mypackage)
71    o folowing PRINT_MESSAGE changes:
72      - remove reminder multiple print to the same file (STDOUT) when multi-threads.
73    o pkg/bbl:
74      - modification so it can work with z*
75      - replace deltaT with dTtracerLev(k) for asynchronous time stepping
76      - global_with_exf/input.yearly verification; changes output.yearly.txt
77    o eesupp/src:
78      - PRINT_MESSAGE: use OpenMP critical instruction (similar to PRINT_ERROR);
79        writing to unit 0 (if unit=errorMessageUnit) extended to the case myThid=1
80      - CHECK_THREADS: specific code if using OpenMP threading: improve checking of
81        # of threads across processors (e.g., different env OMP_NUM_THREADS setting)
82      - improve special preliminary call to EESET_PARMS (if eedata is read 2 times).
83      - when using MPI, always set usingMPI=T ; set default accordingly and stop
84        if not consistent.
85      - ALL_PROC_DIE: add a BARRIER after MPI_FINALIZE call ; skip this when thread
86        argument is zero (in case called within single-thread section).
87    o pkg/fizhi:
88        clean-up turbulence cold-start switch: decided in fizhi_init_vars.F, stored
89        in common bloc (fizhi_coms.h) and then passed as argument up to S/R TURBIO.
90    o pkg/exch2:
91      - add argument "updateCorners" to S/R exch2_get_uv_bounds (enable to
92        activate EXCH_IGNORE_CORNERS in vector EXCH S/R).
93      - switch 1rst EXCH call to IGNORE_CORNERS (instead of UPDATE_CORNERS)
94        but keep the 2nd with UPDATE_CORNERS: this prevents overwriting good data
95        with bad ones coming from a not-yet-updated halo.
96        This should fix the problem when sNx <> sNy and GCD(sNx,sNy) < 2*Olx.
97    o pkg/frazil:
98        move FrzForcT diag from frazil_diagnostics_state.F to frazil_calc_rhs.F
99        http://mitgcm.org/pipermail/mitgcm-devel/2012-March/005384.html
100    o model/src/config_check.F: add a check for OLx>sNx/OLy>sNy
101    o verification/lab_sea
102      * #undef SEAICE_EXCLUDE_FOR_EXACT_AD_TESTING
103      * #define ALLOW_SST_CONTROL & ALLOW_SST_CONTROL
104      * nTimeSteps 3 -> 4
105      * changed reference output accordingly
106    o pkg/ctrl:
107      * fix ctrl_get_gen for xx_sst, xx_sss
108    o pkg/fizhi:
109      - fix 2 calls to S/R GRD2MSC (argument igrd) in update_earth_exports.F
110        update results of exp. fizhi-cs-32x32x40 (fail with only 6 digits for cg2d)
111      - by default, use new version of S/R GETPWHERE (#define TRY_NEW_GETPWHERE);
112        fix few out-of-bounds indices in referencing vars (initialise igrd to 1);
113        clean-up fizhi_turb.F (remove unused & uninitialised qdiaglsm array).
114    o pkg/gmredi:
115      - add diagnostic of Redi (main diagnonal) vertical diffusive flux of Temp
116    o pkg/fizhi:
117      - fix few initialisation and multi-tile Pb: aqualev & gridalt now pass the
118        (old)aces open64 tuv test.
119    o pkg/icefront: fix bug and reorder loop in icefront_init_varia.F
120    o pkg/mom_vecinv:
121      - fix 1 loop range in mom_vecinv.F to be like all the other loops which
122        set/update gu,gv/Diss (fix Pb of uninitialised fVerUkp in admom_vecinv
123        with non-lin free-surf).
124    o model/src: move k-loop outside of i/j-loops when (re-)computing R_low
125      in ini/update_masks_etc.F in order to avoid -O3 optimization problems with
126      some compilers (gfortran 4.6.0 on MacOS)
127    o momentum:
128      - separate fVer?(:,:,kUp) & fVer?(:,:,kDown) in argument list of MOM_FLUXFORM
129        & MOM_VECINV subroutines (to help TAF). This fixes Pb of uninitialised
130        fVer?(kUp) in admom_fluxform with non-lin free-surf or bottom control.
131    
132    checkpoint63k (2012/03/17)
133    o model/src:
134       - selectAddFluid (ALLOW_ADDFLUID): add missing term in horizontal momentum
135         flux-form (mom_fluxform.F) and vertical momentum (calc_gw.F) equations.
136       - SOLVE_DIAGONAL: switch default to use adjoinable & vectorized version
137         (#undef SOLVE_DIAGONAL_LOWMEMORY); update output of exp. front_relax.bvp.
138    o model/src: solve_*diagonal.F
139       - replace division with multiplication by inverse (similar to original version)
140         update output of AD exp. global_ocean.90x40x15.
141       - fix pkg/gmredi/gmredi_calc_psi_bvp.F & pkg/ggl90/ggl90_calc.F
142         to enable the use of the vectorized & differentiable solve_tridiagonal.F
143       - test exp. global_ocean.90x40x15/input_ad: switch to advection scheme 20 for
144         vertical advection (to get solve_tridiagonal tested in AD mode).
145    o pkg/seaice: ECCO-CLIVAR merge:
146      1. seaice AREA relaxation
147         * CPP option: SEAICE_ALLOW_AREA_RELAXATION
148         * runtime flag: SEAICE_tauAreaObsRelax
149      2. modified global mean cost imbalance code: CPP option
150          ALLOW_SSH_GLOBMEAN_COST_CONTRIBUTION
151    o another iteration on solve_*diagonal.F
152       Make choices independent of AUTODIFF
153       Default will be the adjoinable vectorized version.
154       Alternative choices are:
155       * non-adjoinable original version with low memory footprint:
156         #define SOLVE_DIAGONAL_LOWMEMORY
157       * still adjoinable but does not vectorize (k as inner-most loop):
158         #define SOLVE_DIAGONAL_KINNER (keeping SOLVE_DIAGONAL_LOWMEMORY undef)
159    o testreport
160     - add option to use a home made wrapper around "make"
161     - remove MITGCM_IEEE env. variable (no longer active)
162    o pkg/shelfice
163     - improve computation of friction velocity for velocity dependent
164       exchange coefficients: include velocities into SHELFICEBoundaryLayer
165       block to average velocities vertically
166     - add TAF store directives for SHI_ALLOW_GAMMAFRICT
167    o Modify diagonal solvers, now three versions (upon request):
168      #ifndef SOLVE_DIAGONAL_AUTODIFF
169        1. default version (dating back a while ago)
170      #else /* def SOLVE_DIAGONAL_AUTODIFF */
171      # ifdef SOLVE_DIAGONAL_KINNER
172        2. adjoinable version with k-innermost loop (G. Forget)
173      # else
174        3. adjoinable vectorized version of 2.
175      # endif
176      #endif /* SOLVE_DIAGONAL_AUTODIFF */
177      All flags are currently set within routines, but could/should be moved to CPP-options.
178      Array bounds for 1. are as before, for 2.,3. cover the entire domain
179      (could be changed for 1. too).
180    o verification/lab_sea (fwd):
181      - update the 4 fwd lab_sea test experiment: no longer SEAICE_GROWTH_LEGACY,
182        use 7 categories (except hb87), new solve4temp params (except salt_plume),
183        constant salinity (=4) or variable salinity (salt_plume) done through
184        SItracer.
185    o pkg/seaice:
186      - rename parameters: SIsalFrac to SEAICE_saltFrac & SIsal0 to SEAICE_salt0;
187      - remove old parameters ( SEAICE_freeze, SEAICEturbFluxFormula, SEAICE_gamma_t,
188         SEAICE_gamma_t_frz, SEAICE_availHeatTaper & SEAICE_availHeatFracFrz)
189        from SEAICE_PARMS.h ; still need to fix seaice_cost_sst.F (broken when
190        SEAICE_freeze got retired) but already better than previously with
191        SEAICE_freeze=123456.7 deg.C;
192      - move setting of facOpenGrow/Melt from SEAICE_INIT_FIXED to SEAICE_READPARMS
193        (safer multi-threaded setting); always set SEAICEuseEVP;
194      - setting of ocean-ice turb. flux coeff: moved from SEAICE_CHECK to
195        SEAICE_READPARMS & SEAICE_INIT_FIXED (this fixes wrong summary report);
196        stop if multiple specifications for the same coeff; make sure default
197        SEAICE_mcPheePiston is compatible with drF(1) & deltaT.
198    o pkg/obcs:
199      - allow to switch to upwind 1rst order advection scheme for the advective
200        flux computation at the open-boundary; disabled for adjoint built.
201    o pkg/ptracers:
202      - rename PTRACERS_RESTART.h -> PTRACERS_START.h
203      - rename ptracers_fields_blocking_exchanges.F -> ptracers_fields_blocking_exch.F
204      - add parameter to decide when to start a tracer; use internal flag to
205        know which tracer to step-forward; switch this internal flag at the top
206        of forward_step.F (new S/R PTRACERS_SWITCH_ONOFF); for now, not enabled
207        for adjoint built.
208    o pkg/seaice:
209      - add SEAICE_SIZE.h anywhere in the code where SEAICE.h is included ;
210      - move MULTDIM declaration and setting from SEAICE.h to SEAICE_SIZE.h ;
211      - keep experiment offline_exf_seaice truly single category (set MULTDIM=1).
212    o pkg/ecco:
213      - fix writing of output file DiagnosCost_ClimSalt/Theta
214        and DiagnosCost_DriftSalt/Theta (if multi-tiles per proc).
215    o pkg/seaice:
216      - add missing initialisation of COR_ICE array in dynsolver.F
217      - merging SEAICE_MULTICATEGORY define and undef cases. Now the same code is
218        compiled either way, and is tested in all exps (multidim was only tested
219        in lab_sea ad before).
220      - cosmetic change to prepare for future addition of ITD. no change to results.
221        no defaults change.
222      - added run time param SEAICE_multDim (7 for SEAICE_MULTICATEGORY, 1 otherwise).
223      - by lack of adequate verification experiments, I further used custom versions
224        of global_ocean.cs32x15 to test multicat or not, with pickup or not. All
225        should be correct.
226      - avoid recomputations in ad.
227    o array initialisation in adjoint mode:
228      1) pkg/mom_common/mom_calc_ke.F:
229        add full array initialisation of KE inside mom_calc_ke.F (ALLOW_AUTODIFF_TAMC):
230        The S/R which calls MOM_CALC_KE initialises KE but in some recomputation
231        part this initialisation is gone, resulting in Floating Point Exception
232        (caught by open64 compiler with debug option).
233      2) model/src/convective_weights.F
234        set output convectCount over the full array range (instead of doing
235        an update): this fix a similar issue when called within recomputation (adjoint)
236        which could by-pass the initialisation (normally done in the caller S/R).
237    o pkg/seaice:
238      - final version of turbulent flux params, as agreed at MIT ice meet:
239           SEAICE_mcPheePiston (default is ~ 0.000875)
240           SEAICE_mcPheeTaper (default is 0.)
241           SEAICE_frazilFrac (defualt is 1.)
242           SEAICE_mcPheeStepFunc (default is false)
243      - changes results at trunction error level
244      - ifdef SEAICE_EXTERNAL_FLUXES, disallow SEAICE_waterAlbedo
245    o added pkg/frazil:
246      - see frazil_description.tex for details
247      - verification experiment is global_with_exf/input.yearly; changes output.yearly.txt
248    o pkg/shelfice/shelfice_thermodynamics.F
249      - fix exponents for velocity dependent exchange coefficients: change
250        from 2/3(=0) to 0.66666666666666667
251      - move computation of velocity dependent exchange coefficients into
252        separate loop, so that it applies to both thermodynamics
253      - move some divisions by constants out of loops
254    
255    checkpoint63j (2012/02/16)
256    o pkg/seaice:
257      - overhaul of seaice_summary.F after feb 2012 clean-up of seaice_growth.F etc.
258      - SItracer:  added run time params, and allow coupling to ocn salinity.
259    o pkg/seaice: remove (almost) all divisions by constants within loops
260      in seaice_growth.F and seaice_solve4temp.F, this changes (only) the cg2d
261      results of global_ocean.cs32x15.seaice from 16 to 11 digits (but only
262      those, caused by 1/QI -> recip_QI) -> update output.seaice.txt,
263      output_adm.seaice_dynmix.txt and also lab_sea: output_adm.evp.txt
264    o pkg/seaice :
265      - simplify McPhee tapering, and allow to use it with SEAICEturbFluxFormula
266        = 1 or 2, using newly added run time parameter SEAICE_availHeatTaper.
267      - fix d_AREAbyATM, d_AREAbyOCN, d_AREAbyICE diags I broke in r1.148.
268      - add permanent SItflux diag that corresponds to TFLUX but includes
269        ice+snow. Hence SItflux-TFLUX should match the ice+snow heat budget.
270      - allow activation/testing of a fix for suspected missing term in
271        ocn-ice heat budget (to be confirmed). To test this, you want to
272        undef SEAICE_DISABLE_HEATCONSFIX, and then set the run time param
273        SEAICEheatConsFix to .TRUE. that also allows the 'SIaaflux' diagnostic.
274      - no change in results, fwd or ad.
275    o global_ocean.cs32x15/results: 3 changes following from the pkg/seaice commit below:
276      - switch to variable freezing point.
277           Results change : cg2d -> 1 digits; ad -> 3-6-6 digits.
278      - bug fix : the sublimation term that was missing is now activated.
279           Results change : cg2d -> 2 digits; ad -> 8-6-6 digits.
280      - bug fix : flooding sign term for SIsal0.NE.0.
281           Result change : cg2d -> 8 digits; ad -> 11-12-9 digits.
282    o pkg/seaice:
283      - unified freezing point treatment : the old SEAICE_VARIABLE_FREEZING_POINT
284        is now the default, and the old default constant freezing point is recovered
285        with SEAICE_tempFrz0    = -1.96,
286             SEAICE_dTempFrz_dS = 0.,
287      - retire SEAICE_freeze (= the old way of specifycing the constant freezing point)
288      - remove ALLOW_SEAICE_FLOODING brackets; run time switch is already there.
289      - bug fix (thanks to M. Losch) : the sublimation term that was missing is now
290        activated. To reproduce old results with this bug define SEAICE_DISABLE_SUBLIM.
291      - bug fix (silly me) : flooding sign term (seaice_growth.F r 1.149line 1211)
292        was wrong for SIsal0.NE.0. Changes cs32x15 results (see above item for detail).
293      - bug fix (thanks to O. Jahn) : area loss for melting  got messed up in
294        seaice_growth r149 for legacy branch (no results change).
295      - introduce SEAICE_CAP_SUBLIM : caps sublimation heat flux in solve4temp (code
296        from I. Fenty).
297      - results did not change except for global_ocean.cs32x15, mostly due to the
298        switch to variable freezing point (see above item for detail).
299    o pkg/thsice:
300      - fix and simplify interface to salt_plume pkg ; diagnose directly amount of
301        seawater freezing in thsice_calc_thickn (not used).
302    o pkg/seaice: turbulent flux term specification via run time params.
303      - replace CPP switches with run time switches to facilitate testing
304      - retired CPPs : MCPHEE_OCEAN_ICE_HEAT_FLUX,
305                       GRADIENT_MIXED_LAYER_TURBULENCE_FACTOR
306      - added runtime parameter : SEAICEturbFluxFormula
307      - move Mcphee constants to SEAICE_PARAMS.h
308      - seaice_readparms.F : read turbulent flux term params (SEAICEturbFluxFormula;
309                 SEAICE_availHeatFrac/Frz, or SEAICE_gamma_t/_frz if apply);
310                 remove seaice_summary call (moved to seaice_init_fixed)
311      - seaice_init_fixed.F : set SEAICE_availHeatFrac/Frz depending on
312        SEAICEturbFluxFormula, and seaice_summary call (moved from seaice_readparms)
313      - seaice_summary.F : add missing report of read turbulent flux term set up
314                           and SITRACER.
315      - seaice_check.F : check range; inform and stop if retired CPPs are used
316                         (incl. SEAICE_AGE).
317      - seaice_growth.F : unified use of SEAICE_availHeatFrac/Frz, without
318             CPP switch, same computation as before for the different options.
319      - change results at the truncation level.
320    o pkg/seaice:
321      - remove un-used parameters LAD & MAX_TICE ; add new run-time parameters:
322        useMaykutSatVapPoly (default=F), postSolvTempIter (default=2) and
323        SEAICE_wetAlbTemp (default=-1e-3). Remove option SEAICE_SOLVE4TEMP_LEGACY.
324      - update verification/*/input*/data.seaice:
325        to reproduce previous results with former #defined SEAICE_SOLVE4TEMP_LEGACY
326        code, set useMaykutSatVapPoly=T & postSolvTempIter=0 ;
327        and to reproduce previous results with former non-SOLVE4TEMP_LEGACY code,
328        set SEAICE_wetAlbTemp=0 & SEAICE_snowThick=0.
329    o pkg/seaice/seaice_solve4temp.F (SOLVE4TEMP_LEGACY):
330      - remove LEGACY code for solving for tsurf (A1,A2,A3) but maintain the same
331        algorithm (same choice: useMaykutPolySatVap=T, postSolvTempIter=0);
332        difference in results only due to machine truncation.
333      - remove MAX_TICE (tsurf is always =< TMELT anyway); keep MIN_TICE if using
334        MaykutPolySatVap; keep MIN_LWDOWN.
335      - adapt SEAICE_MODIFY_GROWTH_ADJ code (untested) to non-legacy formulation.
336      - update output of verification exp. lab_sea (4 fwd: 11 cg2d digits except hb87,
337        + 3 AD: 6 digits except evp) and offline_exf_seaice.seaice (12 digits).
338    o pkg/salt_plume:
339      - isolate saltPlumeFlux array exch into a specific S/R called from
340        do_oceanic_phys.F
341      - add interface to pkg/salt_plume (filling of saltPlumeFlux) in pkg/thsice.
342    o verification:
343      - move untested set-up to MITgcm_contrib/verification_other.
344    o pkg/seaice:
345      - retire old way of SEAICE_AGE. Now replaced with ALLOW_SITRACER.
346    o pkg/seaice:
347      - seaice_solve4temp.F (keeping results unchanged):
348        * add 2 future run-time params to select which saturation vapor pressure
349          formula is used and how post-iteration fluxes are set.
350          Temporary set these 2 params according to option SOLVE4TEMP_LEGACY;
351        * New piece of code (not used) to update surf. atmos. heat flux F_ia using
352          the linearized expression to stay consistent with tsurf finding.
353      - seaice_freedrift.F avoid floating exception in sqrt(y) since y=sqrt(x*x)-x
354        can be < 0.
355    o pkg/seaice/seaice_solve4temp.F (SOLVE4TEMP_LEGACY undef):
356      - remove from F_ia (and from it's derivative dFiDTs1) the contribution of
357        conductive heat flux F_c , and add it explicitly when updating tsurf as
358        solution of: Fc = Fia + d/dT(Fia - Fc) *delta.tsurf
359        so that now F_ia has a consistent meaning through the entire routine.
360        This causes differences at truncation level: update output of fwd exp.
361        global_ocean.cs32x15.seaice.
362    o pkg/seaice:
363      - lots of editing/cleaning in seaice_solve4temp.F + better documentation
364        of arrays, sign/direction of fluxes; no effect on results.
365      - replace hard coded 273.16 (=previous value of celsius2K) by celsius2K
366        in seaice_budget_ocean.F & seaice_solve4temp.F (SOLVE4TEMP_LEGACY part);
367        note: this should have been done before changing celsius2K default.
368      - to keep results unchanged, add back old value of celsius2K in verification
369        exp. input*/data : lab_sea (AD), offline_exf_seaice (fwd+AD) & seaice_obcs
370      - replace hard coded seawater freezing temp in seaice_solve4temp.F (part
371        SOLVE4TEMP_LEGACY) of 271.20 (=previous value of celsius2K + default
372        value of SEAICE_freeze) by celsius2K+SEAICE_freeze so that seawater
373        freezing temp is consistent with value in seaice_growth.F ; this causes
374        differences at machine truncation level: update lab_sea AD output (3/4).
375    o pkg/seaice:
376      - mask (in exf_init_fixed.F) atemp,aqh,evap,precip,runoff,lwflx,areamask
377        and climsst/sss even when using seaice (to prevent calculation that might
378        use SST on land); does not affect any verification exp.
379      - apply mask to taux,tauy (in seaice_get_dynforcing.F); update output
380        of lab_sea.fd & lab_sea.hb87 and global_ocean.cs32x15.seaice_dynmix.
381    o pkg/seaice/seaice_growth.F: add mask to avoid non-zero ice thickness
382      over land (non-legacy code)
383    o vectorize salt_plume package:
384      - add extra code to salt_plume_frac and salt_plume_tendency_apply_s
385      - this code computes plumebk everywhere (also over land), thus requires
386        code to avoid divisions by zero and catch the case of kLev=Nr.
387      - efficiency of salt_plume_frac is still sub-optimal
388    o tools (genmake2):
389      - fix makefile NAME specification (option: -makefile NAME) by adding
390        "-f $MAKEFILE" in few places where it was missing including makedepend
391        command (contribution from Paul).
392    
393    checkpoint63i (2012/01/24)
394    o model/src:
395      - add factorized versions of some EOS code to find_rho.F,
396        define USE_FACTORIZED_EOS to turn it on (default for TARGET_NEC_SX)
397    o model/src:
398      - add celsius2K to namelist PARM01; remove unused recip_rhoNil from PARAMS.h;
399      - change default celsius2K from 273.16 to 273.15
400      - to keep results unchanged, add back old value of celsius2K in verification
401        exp. input*/data : aim.5l_cs, 1D_ocean_ice_column, lab_sea (fwd),
402         global_ocean.cs32x15(seaice) & cpl_aim+ocn(input_atm).
403    o model/src: add a little initialisation trick to find_rho.F and find_alpha.F
404      to make TAF generate vectorizable code
405    o pkg/seaice/seaice_evp.F: add code (copied from CICE) that avoids underflows.
406       Turn on by defining SEAICE_EVP_ELIMINATE_UNDERFLOWS. Most compilers
407       have flags that do this more efficiently.
408    o pkg/diagnostics/diagstats_calc.F
409      - for TARGET_NEC_SX fix the treatment of the scaling factor tmpFac=scaleFact
410    o pkg/obcs (with exch2):
411      - derive OB indices in overlap region from OB-InsideMask (in obcs_init_fixed.F)
412        and remove code (in obcs_readparms.F) which was based on EXCH of indices
413        (through buffer) and did not account for exch2 (e.g., CS-grid) topology.
414    o pkg/exf and seaice exp:
415      - change offline_exf_seaice.seaicetd test exp. to use default DIFF1 value (=0)
416        so that switching off area & heff advection flags does not affect results.
417      - change default EXF_LWDOWN_WITH_EMISSIVITY to #define in EXF_OPTIONS.h
418      - keep exp. seaice_obcs & 1D_ocean_ice_column(ad) unchanged (using #undef
419        EXF_LWDOWN_WITH_EMISSIVITY) and, using pkg/exf default emissivities, update
420        results of verification experiments: 1D_ocean_ice_column(fwd),
421        global_ocean.cs32x15.seaice(fwd+ad) & seaice_dynmix(ad), lab_sea (all 8)
422        and offline_exf_seaice (all 4).
423    o pkg/seaice:
424      - remove array YNEG, RIVER, TMIX (replaced by local var) from common block;
425        remove also areaNm1 & hEffNm1 when SEAICE_GROWTH_LEGACY is undef.
426      - fix bug: areaNm1 & hEffNm1 are needed in seaice_growth (SEAICE_GROWTH_LEGACY)
427        but were not filled when resp. SEAICEadvArea=F & SEAICEadvHeff=F and
428        not multi-dim advection;
429      - fix seaice_growth.F to compile with both SEAICE_GROWTH_LEGACY and
430        SHORTWAVE_HEATING #undef.
431    o optim: make Makefile more robust (?)
432    o pkg/obcs:
433      * fix treatment of obcs_read_pickup for TAF
434    o pkg/shelfice:
435      * add missing initialisation of num_shifwflx
436      * new adjoint verification exp. for isomip
437      * change Prandtl and Schmidt numbers from generic formulations
438        (in terms of model diffus. and visc.) to separate runtime
439        parameters, with Holland and Jenkins (1999) default values.
440    o pkg/exf (interpolation):
441      - extended input field (2 rows) near the N & S poles:
442        * fill in with the symetric value (when even Nb of data in longitude)
443        * add average value at the poles only for scalar quantities ; for vector
444          component interpolation, skip the averaging and keep duplicated values,
445          unless the 2 components have same location (uvInterp=T) in which case
446          interpolate the 2 components together using S/R EXF_INTERP_UV.
447      - new S/R EXF_INTERP_UV to interpolate the 2 components of a vector field
448        together: this allows to account properly for local orientation when
449        averaging at N & S pole.
450      - add CPP option EXF_USE_OLD_INTERP_POLE to recover old results regarding
451        exf-interpolation near N & S poles. Undef by default.
452      - add debug check/print on 1rst iter if debugLevel >=2.
453    o pkg/exf:
454      - change masking flags definition (no longer "parameter"), put them in
455        common block and set them in S/R EXF_INIT_FIXED.
456      - change recognized masking flag from s,u,v to c,w,s since the mask
457        to use (maskC,W,S) depends on position on model grid and has little to
458        do with scalar/vector difference; fix masking if using P-coordinates.
459      - fix masking of wind-stress (was wrong if interpolated or read on A-grid)
460        and update results of exp. global_with_exf (x2).
461      - fix setting of zenith-angle table when SHORTWAVE_HEATING is undef.
462    o pkg/obcs
463      - S/R obcs_calc_stevens: fix a small bug (gammat -> gammas where appropriate)
464    o pkg/exf (interpolation):
465      - assume periodicity in X only if input field cover full longitude range.
466      - improve search for lat. index (supposed to be faster, in ~log2(ny) steps,
467        and should vectorise).
468      - fix input lat of the 2 added row (in case we provide N.pole data).
469    
470    checkpoint63h (2011/12/30)
471    o pkg/seaice:
472      - change declaration of UVM from _RL to _RS in order to get B-grid
473        uIce,vIce monitor when _RS = real*4
474    o pkg/offline:
475      - new S/R OFFLINE_RESET_PARMS for resetting main-model params (switch off flags);
476      - compute vertical velocity if not read from file (switch on exactConserv
477        & staggerTimeStep);
478      - fix output of ptracer monitor iter & time for default PTRACERS_monitorFreq.
479    o verification:
480      - update grid-files (in tutorial_held_suarez_cs/input and fizhi-cs-32x32x40/input)
481        with grid-angle generated using "utils/matlab/cs_grid/cubeCalcAngle.m":
482        fix Pb in yG definition @ 2 missing corners (previously yG was averaged);
483      - update output of exp. global_ocean.cs32x15.viscA4 after changing
484        grid-file angles (used here for coriolis-3d);
485      - remove (or gzip) few files not needed to run fizhi-cs experiments.
486    o pkg/exf (vector interpolation):
487      - rotate vector component toward local grid-axis orientation using grid-angles
488        (stored in GRID.h) instead of locally computed rotation angle; keep old code
489        available with exf option EXF_USE_OLD_VEC_ROTATION (undef by default).
490    o pkg/seaice:
491      - allow to compile with exf options ALLOW_ATM_TEMP or ALLOW_DOWNWARD_RADIATION
492        undefined. Fix and remove the stop when ALLOW_RUNOFF is undefined.
493    o pkg/PKG_OPTIONS.h files:
494      - move #include "CPP_OPTIONS.h" just after #include "PACKAGES_CONFIG.h",
495        outside of the #ifdef ALLOW_THISPKG / #endif block.
496      - update verification/*/code/PKG_OPTIONS.h files.
497    o add a verification experiment (offline_exf_seaice/input.seaice) that test
498      the B-grid LSOR solver
499    o pkg/seaice: sort out emissivity and long wave radiation step 2:
500      - add emissivity for snow and ice as new run-time parameters
501        (unfortunately) that default to the corresponding exf values; this
502        changes results in most verification experiments so that for backward
503        compatibility these parameter have to be set explicitly to inconsistent
504        values (ugly);
505      - the exf-flag EXF_LWDOWN_WITH_EMISSIVITY then gets rid off the hard-wired
506        emissivities of 0.97 associated with lwdownloc in S/R seaice_solve4temp
507        until we agree how to handle this bug properly
508    o pkg/exf (interpolation):
509      - add a set of run-time param ({inputfield}_interpMethod), one for
510        each interpolated input field, to select the interpolation method
511        with a value of zero switching off the interpolation;
512      - print interpolation parameters to standard output;
513      - refine exf_check.F accordingly ; stop if USE_NO_INTERP_RUNOFF is defined
514        (to use instead runoff_interpMethod=0 in data.exf).
515      - simplify default setting of interpolation parameters (for all fields,
516        set position to match model grid cell-center position, leading to trivial
517        interpolation in case of regular Lat-Lon grid) and fix for the case of
518        non-uniform delY.
519    o pkg/exf/exf_radiation.F: add the factor ocean_emissivity to lwdown, for
520       within #ifdef EXF_LWDOWN_WITH_EMISSIVITY/#endif. Unless ocean_emissivity=1.
521       this factor is absolutely required, because the lw exitance (= out-going
522       long wave radiation) is emissivity*stefanBoltzmann*T^4 + rho*lwdown,
523       where the reflectivity rho = 1-emissivity for conservation reasons. Once
524       this is established, we can remove the CPP-Flag (if we want to).
525    o pkg/seaice:
526      - qualify a stop statement in S/R seaice_check: EXF_READ_EVAP and
527        ALLOW_BULKFORMULAE are only required if SEAICE_EXTERNAL_FLUXES is defined
528      - sort out emissivity and long wave radiation, step 1: make SEAICE_emissivity
529        what the name implies (and not emissivity*BoltzmannConstant), this means
530        the old default value of 5.5e-8 now means
531        5.5e-8/5.670e-8 = 0.97001763668430343479 as ocean_emissivity in
532        S/R exf_readparms
533      - FV-discretization of the B-grid LSOR solver, turn on with
534        SEAICE_LSRBNEW. This new solver also involves a slight re-organization
535        of the calling routine dynsolver, so that B and C-grid code look a
536        little more alike.
537      - fix index bugs in ostres.F (B-grid code)
538    o pkg/seaice/seaice_ocean_budget.F: change (unused) code to make it look better
539    o pkg/seaice/seaice_readparms.F: make ocean_emissivity*stefanBoltzmann the
540      default for SEAICE_emissivity, if useEXF; requires setting a wrong
541      parameter value in global_ocean.cs32x15/input.seaice/data.seaice for
542      backward compatiblity
543    o model/src: use sigmaR in calc_ivdc
544    
545    checkpoint63g (2011/12/16)
546    o pkg/seaice/seaice_growth.F:
547      fix heat conservation of the coupled ocean-seaice system.
548      when SEAICE_HEAT_CONSERV_FIX is defined, the mismatch of
549      solid vs liquid water treatment is resolved via QNET.
550    o pkg/seaice/seaice_growth.F:
551      add missing term for sublimation in saltFlux, which was breaking conservation.
552    o pkg/seaice/seaice_model.F:
553      Remove this patholigical case treatment in evolution branch,
554      where it is un-necessary and breaks conservation.
555      Update global_ocean.cs32x15/results accordingly for
556      output.seaice.txt output_adm.seaice.txt and output_adm.seaice_dynmix.txt
557    o model/src:
558      useRealFreshWaterFlux: remove masking of EmPmP (using maskInC) in
559      external_forcing_surf.F and apply mask directly in S/R SOLVE_FOR_PRESSURE.
560    o pkg/obcs:
561      modify Stevens boundary conditions so that S/R obcs_calc_stevens computes
562      tendency for temperature and salinity that is then applied to update
563      theta and salt in S/R obcs_apply_ts; this requires proper masking of all
564      horizontal advection and diffusion contributions on the boundary (in
565      S/Rs gad_advection, gad_calc_rhs, gmredi_rtransport, gmredi_calc_diff), and
566      removing the mask in S/R timestep_tracer. The advantage of this approach is
567      that the updated tracer values include contributions from the surface
568      forcing and vertical diffusion.
569      This modification changes exp4.stevens because of vertical diffusion.
570    o model/src:
571      change non-curvilinear grid setting to also work with exch2 + blank tiles:
572      - move delX,delY to new header file (SET_GRID.h) and adjust length to 1rst
573        face dimensions.
574      - new S/R INI_LOCAL_GRID to define model tile-local grid (using same units
575        as delX,delY) and called from S/R INI_CARTESIAN_GRID, INI_CYLINDER_GRID
576        and INI_SPHERICAL_POLAR_GRID.
577      change test-experiment global_ocean.90x40x15:
578      - split the domain in many more tiles (9x4 tiles of 10x10 each);
579      - switch to exch2 and remove 1 blank-tile (but only for MPI test).
580      - update results of both test (std & dwnslp).
581    o pkg/diagnostics/diagstat_calc.F: fix problem with non-initialised halos in
582       tmp-fields for TARGET_NEC_SX at the cost of extra loops and less vectorisation
583    o model/src:
584      - take sigma-coords related code out of update_etah.F into new S/R UPDATE_ETAWS
585        and fix initialisation when using sigma-coords.
586    o model/src:
587     - improve Gael's changes from Jan 14, 2011 "addition of an 'update' of hfacc etc.
588       to their current value at the beginning of forward_step.F": add a new run-time
589       switch "doResetHFactors" (default=false) and use it to do (or not) the resetting.
590     - set doResetHFactors=T in the following test exp:
591        global_ocean.90x40x15/input (rStar) & input.dwnslp (linFS),
592        global_ocean.cs32x15/input.seaice (rStar), hs94.cs-32x32x5/input.impIGW (linFS)
593        and tutorial_global_oce_in_p (nonLinFS in p)
594    o pkg/ecco
595      - added IES cost term
596    o verification/advect_xz
597      - scale down the depth by 1/100 (from 200 km to just 2.km)
598      - add secondary test using divergent flow, r-star and implicit vertical advection.
599      - add note (check_conserve_TS.txt) and matlab script to check global
600        conservation of T & S with NonLin-FreeSurf and Adams-Bashforth.
601    o pkg/rbcs:
602      - add missing relaxUFile & relaxVFile in namelist (in rbcs_readparms.F).
603    o pkg/obcs (Stevens BCs):
604      - fix various problems in the phase speed computations of the Stevens
605        boundary conditions:
606        - sign error for western and southern boundaries,
607        - time tendencies were underestimated by factor of dTracerLev and some just
608          zero (for multidim advection schemes) -> now estimate time tendencies
609          from difference between previous (n) time level and the one before (n-1);
610          this requires storing a field per tracer per boundary, also in the pickup
611          files.
612        - replace deltaTmom in cflMer/Zon computation with dTracerLev
613        - set default phase velocity to cflMer/Zon
614      - update verification experiment exp4.stevens
615    o pkg/generic_advdiff (implicit_r):
616      - fix implicit vertical advection conservation with AB and/or NonLin-FreeSurf
617        (remove Tr*d/dz(w) in gad_implicit_r.F and add it in gad_calc_rhs.F);
618      - fix implicit vertical diffusion or advection with NonLin FreeSurf
619        (was using current recip_hFacC instead of future recip_hFacC): set future
620        recip_hFac in thermodynamics.F and pass & use it in all vertical implicit
621        solver S/R ;
622      - fill diagnostics of vertical advective fluxes (computed from tendency)
623        when using implicit vert. advection;
624      - update output of exp that uses NonLin-FreeSurf & implicit vertical diffusion:
625         global_ocean.90x40x15 (fwd+AD), global_ocean.cs32x15 (4 fwd +4 AD),
626         tutorial_global_oce_in_p (fwd), tutorial_tracer_adjsens (AD)
627         and cpl_aim+ocn (used in ocean); to be fixed: bottom_ctrl_5x5.
628    o pkg/diagnostics:
629      - add diags for T & S tendency which goes through Adams-Bashforth.
630    
631    checkpoint63f (2011/11/30)
632    o pkg/obcs/obcs_calc_stevens.F:
633      - join some loops to reduce number of if-statements
634      - fix a bug in code for northern and southern boundaries.
635    o pkg/seaice/seaice_init_varia.F
636      - undo resetting UVM=0 that has slipped in unnoticed in r1.49 and
637        caused zero ice-velocities for the B-grid code
638    o pkg/seaice/seaice_init_fixed.F
639      - fix a bug in the initialisation of the second metric terms
640        k2AtC and k2AtZ: k2AtC was set to the value of k2AtZ and k2AtZ was 0.
641      - this affects all seaice configurations with useCurviLinearGrid = .true.
642        and SEAICEuseDynamics = .true. (default) and SEAICEuseMetricTerms
643        = .true. (default)
644      - the only verification experiment affected is global_ocean.cs32x15:
645        icedyn, seaice, and seaice_dynmix (AD)
646    o pkg/thsice/thsice_diagnostics_state.F
647      - only for TARGET_NEC_SX: initialise all of tmpFld, so that overlap does
648        not contain garbage that can lead to surprises in diagstats_calc.F
649    o model/src:
650      - move bi,bj loops inside INTEGR_CONTINUITY ;
651      - call INTEGR_CONTINUITY directly from forward_step.F
652        (previously called from momentum_correction_step.F)
653      - call UPDATE_ETAH from integr_continuity.F and update initialise_varia.F,
654        forward_step.F and pkg/ecco/the_main_loop.F
655  o model/src/do_oceanic_phys.F:  o model/src/do_oceanic_phys.F:
656    - reset addMass to zero only if useICEFRONT ;    - reset addMass to zero only if useICEFRONT ;
657    - separated k-loop for rhoInSitu calculation ;    - separated k-loop for rhoInSitu calculation ;

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