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revision 1.1502 by jmc, Wed Sep 21 16:29:49 2011 UTC revision 1.1652 by jmc, Wed Apr 18 22:07:28 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/ptracers:
8     - move ptracers summary and setup check into separated S/R ; add a check for
9       valid PTRACERS_Iter0 value (error+stop or just warning).
10    o pkg/cal (+ pkg/ecco):
11     - avoid calling a S/R with 2 times the same arg (FWD: unless both are only used
12       as input; and for AD, unless both are not differentiable (e.g., k index)).
13    o model/src:
14     - define internal flag "uniformFreeSurfLev" (=T when free-surface level-index
15       is everywhere k=1) to speed-up some calculations (by pass kSurf reference);
16       temporary set to usingZCoords value (to be changed to F when using shelfice).
17     - hydrostatic pressure: implement partial cell near the surface also for
18       Z-coordinates (for the case where uniformFreeSurfLev=F); replace test on
19       usingZCoords with test on uniformFreeSurfLev where needed (in NonHyd code).
20    o pkg/ctrl/ctrl_init.F:
21     - add a formal parameter to s/r ctrl_init_rec to print
22       xx_$(ctrl_valiable)_file for easier debugging
23     - move call of cal_* routines into the if-block where they are really
24       needed so that xx_$(ctrl_variable)_period can be 0 or -12 without having
25       to specify a startdate
26    o pkg/seaice:
27     - update comments in SEAICE_OPTIONS.h (+ similar update of lab_sea/code and
28       global_ocean.cs32x15/code versions).
29     - turn on seaice Multi-category (in data.seaice, SEAICE_multDim=7) for
30       verification experiment global_ocean.cs32x15.seaice and update results.
31    o pkg/exf:
32     - new S/R EXF_GETFIELD_START to return starting-time of a forcing field
33       (according to useExfYearlyFields).
34    o pkg/cal:
35     - move calendar setting & summary (previously in cal_readparams.F) into new
36       S/R CAL_INIT_FIXED to be called later in the initialisation process, once
37       length of the simulation is set (after SET_PARMS call); This is an attempt
38       to fix Pb when, e.g.: pkg/longstep, modifies the length of the run.
39     - For safety: keep a record of pkg/cal parameter settings status
40               to allow to STOP if one pkg/cal S/R is called too early.
41     - add a stop in all basic pkg/cal subroutines if called before setting is done.
42     - modify cal_getdate.F: stop when nothing was returned;
43       if called with myIter=-1, simply retrun modelBaseDate (1,2 = startDate_1,_2);
44       this allows to remove "cal.h" from seaice_read_parms.F & init_mnc_vars.F.
45    
46    checkpoint63l (2012/04/04)
47    o pkg/bbl:
48      - fix call to FIND_RHO_2D in bbl_calc_rho.F (case multi-tiles per proc);
49        update global_with_exf output.yearly.txt file.
50    o pkg/cal:
51      - start to clean-up cal_set.F ; fix for the case where baseTime is non-zero.
52      - remove 2 unsused and very short (1 line only) functions ;
53      - remove unsused subroutines from AD-Diff list.
54    o model/src:
55      - start to implement clean wait to stop in initialization S/R (config_check.F,
56         packages_check.F, ini_parms.F and pkg/obcs/obcs_check.F + pkg/mypackage)
57    o folowing PRINT_MESSAGE changes:
58      - remove reminder multiple print to the same file (STDOUT) when multi-threads.
59    o pkg/bbl:
60      - modification so it can work with z*
61      - replace deltaT with dTtracerLev(k) for asynchronous time stepping
62      - global_with_exf/input.yearly verification; changes output.yearly.txt
63    o eesupp/src:
64      - PRINT_MESSAGE: use OpenMP critical instruction (similar to PRINT_ERROR);
65        writing to unit 0 (if unit=errorMessageUnit) extended to the case myThid=1
66      - CHECK_THREADS: specific code if using OpenMP threading: improve checking of
67        # of threads across processors (e.g., different env OMP_NUM_THREADS setting)
68      - improve special preliminary call to EESET_PARMS (if eedata is read 2 times).
69      - when using MPI, always set usingMPI=T ; set default accordingly and stop
70        if not consistent.
71      - ALL_PROC_DIE: add a BARRIER after MPI_FINALIZE call ; skip this when thread
72        argument is zero (in case called within single-thread section).
73    o pkg/fizhi:
74        clean-up turbulence cold-start switch: decided in fizhi_init_vars.F, stored
75        in common bloc (fizhi_coms.h) and then passed as argument up to S/R TURBIO.
76    o pkg/exch2:
77      - add argument "updateCorners" to S/R exch2_get_uv_bounds (enable to
78        activate EXCH_IGNORE_CORNERS in vector EXCH S/R).
79      - switch 1rst EXCH call to IGNORE_CORNERS (instead of UPDATE_CORNERS)
80        but keep the 2nd with UPDATE_CORNERS: this prevents overwriting good data
81        with bad ones coming from a not-yet-updated halo.
82        This should fix the problem when sNx <> sNy and GCD(sNx,sNy) < 2*Olx.
83    o pkg/frazil:
84        move FrzForcT diag from frazil_diagnostics_state.F to frazil_calc_rhs.F
85        http://mitgcm.org/pipermail/mitgcm-devel/2012-March/005384.html
86    o model/src/config_check.F: add a check for OLx>sNx/OLy>sNy
87    o verification/lab_sea
88      * #undef SEAICE_EXCLUDE_FOR_EXACT_AD_TESTING
89      * #define ALLOW_SST_CONTROL & ALLOW_SST_CONTROL
90      * nTimeSteps 3 -> 4
91      * changed reference output accordingly
92    o pkg/ctrl:
93      * fix ctrl_get_gen for xx_sst, xx_sss
94    o pkg/fizhi:
95      - fix 2 calls to S/R GRD2MSC (argument igrd) in update_earth_exports.F
96        update results of exp. fizhi-cs-32x32x40 (fail with only 6 digits for cg2d)
97      - by default, use new version of S/R GETPWHERE (#define TRY_NEW_GETPWHERE);
98        fix few out-of-bounds indices in referencing vars (initialise igrd to 1);
99        clean-up fizhi_turb.F (remove unused & uninitialised qdiaglsm array).
100    o pkg/gmredi:
101      - add diagnostic of Redi (main diagnonal) vertical diffusive flux of Temp
102    o pkg/fizhi:
103      - fix few initialisation and multi-tile Pb: aqualev & gridalt now pass the
104        (old)aces open64 tuv test.
105    o pkg/icefront: fix bug and reorder loop in icefront_init_varia.F
106    o pkg/mom_vecinv:
107      - fix 1 loop range in mom_vecinv.F to be like all the other loops which
108        set/update gu,gv/Diss (fix Pb of uninitialised fVerUkp in admom_vecinv
109        with non-lin free-surf).
110    o model/src: move k-loop outside of i/j-loops when (re-)computing R_low
111      in ini/update_masks_etc.F in order to avoid -O3 optimization problems with
112      some compilers (gfortran 4.6.0 on MacOS)
113    o momentum:
114      - separate fVer?(:,:,kUp) & fVer?(:,:,kDown) in argument list of MOM_FLUXFORM
115        & MOM_VECINV subroutines (to help TAF). This fixes Pb of uninitialised
116        fVer?(kUp) in admom_fluxform with non-lin free-surf or bottom control.
117    
118    checkpoint63k (2012/03/17)
119    o model/src:
120       - selectAddFluid (ALLOW_ADDFLUID): add missing term in horizontal momentum
121         flux-form (mom_fluxform.F) and vertical momentum (calc_gw.F) equations.
122       - SOLVE_DIAGONAL: switch default to use adjoinable & vectorized version
123         (#undef SOLVE_DIAGONAL_LOWMEMORY); update output of exp. front_relax.bvp.
124    o model/src: solve_*diagonal.F
125       - replace division with multiplication by inverse (similar to original version)
126         update output of AD exp. global_ocean.90x40x15.
127       - fix pkg/gmredi/gmredi_calc_psi_bvp.F & pkg/ggl90/ggl90_calc.F
128         to enable the use of the vectorized & differentiable solve_tridiagonal.F
129       - test exp. global_ocean.90x40x15/input_ad: switch to advection scheme 20 for
130         vertical advection (to get solve_tridiagonal tested in AD mode).
131    o pkg/seaice: ECCO-CLIVAR merge:
132      1. seaice AREA relaxation
133         * CPP option: SEAICE_ALLOW_AREA_RELAXATION
134         * runtime flag: SEAICE_tauAreaObsRelax
135      2. modified global mean cost imbalance code: CPP option
136          ALLOW_SSH_GLOBMEAN_COST_CONTRIBUTION
137    o another iteration on solve_*diagonal.F
138       Make choices independent of AUTODIFF
139       Default will be the adjoinable vectorized version.
140       Alternative choices are:
141       * non-adjoinable original version with low memory footprint:
142         #define SOLVE_DIAGONAL_LOWMEMORY
143       * still adjoinable but does not vectorize (k as inner-most loop):
144         #define SOLVE_DIAGONAL_KINNER (keeping SOLVE_DIAGONAL_LOWMEMORY undef)
145    o testreport
146     - add option to use a home made wrapper around "make"
147     - remove MITGCM_IEEE env. variable (no longer active)
148    o pkg/shelfice
149     - improve computation of friction velocity for velocity dependent
150       exchange coefficients: include velocities into SHELFICEBoundaryLayer
151       block to average velocities vertically
152     - add TAF store directives for SHI_ALLOW_GAMMAFRICT
153    o Modify diagonal solvers, now three versions (upon request):
154      #ifndef SOLVE_DIAGONAL_AUTODIFF
155        1. default version (dating back a while ago)
156      #else /* def SOLVE_DIAGONAL_AUTODIFF */
157      # ifdef SOLVE_DIAGONAL_KINNER
158        2. adjoinable version with k-innermost loop (G. Forget)
159      # else
160        3. adjoinable vectorized version of 2.
161      # endif
162      #endif /* SOLVE_DIAGONAL_AUTODIFF */
163      All flags are currently set within routines, but could/should be moved to CPP-options.
164      Array bounds for 1. are as before, for 2.,3. cover the entire domain
165      (could be changed for 1. too).
166    o verification/lab_sea (fwd):
167      - update the 4 fwd lab_sea test experiment: no longer SEAICE_GROWTH_LEGACY,
168        use 7 categories (except hb87), new solve4temp params (except salt_plume),
169        constant salinity (=4) or variable salinity (salt_plume) done through
170        SItracer.
171    o pkg/seaice:
172      - rename parameters: SIsalFrac to SEAICE_saltFrac & SIsal0 to SEAICE_salt0;
173      - remove old parameters ( SEAICE_freeze, SEAICEturbFluxFormula, SEAICE_gamma_t,
174         SEAICE_gamma_t_frz, SEAICE_availHeatTaper & SEAICE_availHeatFracFrz)
175        from SEAICE_PARMS.h ; still need to fix seaice_cost_sst.F (broken when
176        SEAICE_freeze got retired) but already better than previously with
177        SEAICE_freeze=123456.7 deg.C;
178      - move setting of facOpenGrow/Melt from SEAICE_INIT_FIXED to SEAICE_READPARMS
179        (safer multi-threaded setting); always set SEAICEuseEVP;
180      - setting of ocean-ice turb. flux coeff: moved from SEAICE_CHECK to
181        SEAICE_READPARMS & SEAICE_INIT_FIXED (this fixes wrong summary report);
182        stop if multiple specifications for the same coeff; make sure default
183        SEAICE_mcPheePiston is compatible with drF(1) & deltaT.
184    o pkg/obcs:
185      - allow to switch to upwind 1rst order advection scheme for the advective
186        flux computation at the open-boundary; disabled for adjoint built.
187    o pkg/ptracers:
188      - rename PTRACERS_RESTART.h -> PTRACERS_START.h
189      - rename ptracers_fields_blocking_exchanges.F -> ptracers_fields_blocking_exch.F
190      - add parameter to decide when to start a tracer; use internal flag to
191        know which tracer to step-forward; switch this internal flag at the top
192        of forward_step.F (new S/R PTRACERS_SWITCH_ONOFF); for now, not enabled
193        for adjoint built.
194    o pkg/seaice:
195      - add SEAICE_SIZE.h anywhere in the code where SEAICE.h is included ;
196      - move MULTDIM declaration and setting from SEAICE.h to SEAICE_SIZE.h ;
197      - keep experiment offline_exf_seaice truly single category (set MULTDIM=1).
198    o pkg/ecco:
199      - fix writing of output file DiagnosCost_ClimSalt/Theta
200        and DiagnosCost_DriftSalt/Theta (if multi-tiles per proc).
201    o pkg/seaice:
202      - add missing initialisation of COR_ICE array in dynsolver.F
203      - merging SEAICE_MULTICATEGORY define and undef cases. Now the same code is
204        compiled either way, and is tested in all exps (multidim was only tested
205        in lab_sea ad before).
206      - cosmetic change to prepare for future addition of ITD. no change to results.
207        no defaults change.
208      - added run time param SEAICE_multDim (7 for SEAICE_MULTICATEGORY, 1 otherwise).
209      - by lack of adequate verification experiments, I further used custom versions
210        of global_ocean.cs32x15 to test multicat or not, with pickup or not. All
211        should be correct.
212      - avoid recomputations in ad.
213    o array initialisation in adjoint mode:
214      1) pkg/mom_common/mom_calc_ke.F:
215        add full array initialisation of KE inside mom_calc_ke.F (ALLOW_AUTODIFF_TAMC):
216        The S/R which calls MOM_CALC_KE initialises KE but in some recomputation
217        part this initialisation is gone, resulting in Floating Point Exception
218        (caught by open64 compiler with debug option).
219      2) model/src/convective_weights.F
220        set output convectCount over the full array range (instead of doing
221        an update): this fix a similar issue when called within recomputation (adjoint)
222        which could by-pass the initialisation (normally done in the caller S/R).
223    o pkg/seaice:
224      - final version of turbulent flux params, as agreed at MIT ice meet:
225           SEAICE_mcPheePiston (default is ~ 0.000875)
226           SEAICE_mcPheeTaper (default is 0.)
227           SEAICE_frazilFrac (defualt is 1.)
228           SEAICE_mcPheeStepFunc (default is false)
229      - changes results at trunction error level
230      - ifdef SEAICE_EXTERNAL_FLUXES, disallow SEAICE_waterAlbedo
231    o added pkg/frazil:
232      - see frazil_description.tex for details
233      - verification experiment is global_with_exf/input.yearly; changes output.yearly.txt
234    o pkg/shelfice/shelfice_thermodynamics.F
235      - fix exponents for velocity dependent exchange coefficients: change
236        from 2/3(=0) to 0.66666666666666667
237      - move computation of velocity dependent exchange coefficients into
238        separate loop, so that it applies to both thermodynamics
239      - move some divisions by constants out of loops
240    
241    checkpoint63j (2012/02/16)
242    o pkg/seaice:
243      - overhaul of seaice_summary.F after feb 2012 clean-up of seaice_growth.F etc.
244      - SItracer:  added run time params, and allow coupling to ocn salinity.
245    o pkg/seaice: remove (almost) all divisions by constants within loops
246      in seaice_growth.F and seaice_solve4temp.F, this changes (only) the cg2d
247      results of global_ocean.cs32x15.seaice from 16 to 11 digits (but only
248      those, caused by 1/QI -> recip_QI) -> update output.seaice.txt,
249      output_adm.seaice_dynmix.txt and also lab_sea: output_adm.evp.txt
250    o pkg/seaice :
251      - simplify McPhee tapering, and allow to use it with SEAICEturbFluxFormula
252        = 1 or 2, using newly added run time parameter SEAICE_availHeatTaper.
253      - fix d_AREAbyATM, d_AREAbyOCN, d_AREAbyICE diags I broke in r1.148.
254      - add permanent SItflux diag that corresponds to TFLUX but includes
255        ice+snow. Hence SItflux-TFLUX should match the ice+snow heat budget.
256      - allow activation/testing of a fix for suspected missing term in
257        ocn-ice heat budget (to be confirmed). To test this, you want to
258        undef SEAICE_DISABLE_HEATCONSFIX, and then set the run time param
259        SEAICEheatConsFix to .TRUE. that also allows the 'SIaaflux' diagnostic.
260      - no change in results, fwd or ad.
261    o global_ocean.cs32x15/results: 3 changes following from the pkg/seaice commit below:
262      - switch to variable freezing point.
263           Results change : cg2d -> 1 digits; ad -> 3-6-6 digits.
264      - bug fix : the sublimation term that was missing is now activated.
265           Results change : cg2d -> 2 digits; ad -> 8-6-6 digits.
266      - bug fix : flooding sign term for SIsal0.NE.0.
267           Result change : cg2d -> 8 digits; ad -> 11-12-9 digits.
268    o pkg/seaice:
269      - unified freezing point treatment : the old SEAICE_VARIABLE_FREEZING_POINT
270        is now the default, and the old default constant freezing point is recovered
271        with SEAICE_tempFrz0    = -1.96,
272             SEAICE_dTempFrz_dS = 0.,
273      - retire SEAICE_freeze (= the old way of specifycing the constant freezing point)
274      - remove ALLOW_SEAICE_FLOODING brackets; run time switch is already there.
275      - bug fix (thanks to M. Losch) : the sublimation term that was missing is now
276        activated. To reproduce old results with this bug define SEAICE_DISABLE_SUBLIM.
277      - bug fix (silly me) : flooding sign term (seaice_growth.F r 1.149line 1211)
278        was wrong for SIsal0.NE.0. Changes cs32x15 results (see above item for detail).
279      - bug fix (thanks to O. Jahn) : area loss for melting  got messed up in
280        seaice_growth r149 for legacy branch (no results change).
281      - introduce SEAICE_CAP_SUBLIM : caps sublimation heat flux in solve4temp (code
282        from I. Fenty).
283      - results did not change except for global_ocean.cs32x15, mostly due to the
284        switch to variable freezing point (see above item for detail).
285    o pkg/thsice:
286      - fix and simplify interface to salt_plume pkg ; diagnose directly amount of
287        seawater freezing in thsice_calc_thickn (not used).
288    o pkg/seaice: turbulent flux term specification via run time params.
289      - replace CPP switches with run time switches to facilitate testing
290      - retired CPPs : MCPHEE_OCEAN_ICE_HEAT_FLUX,
291                       GRADIENT_MIXED_LAYER_TURBULENCE_FACTOR
292      - added runtime parameter : SEAICEturbFluxFormula
293      - move Mcphee constants to SEAICE_PARAMS.h
294      - seaice_readparms.F : read turbulent flux term params (SEAICEturbFluxFormula;
295                 SEAICE_availHeatFrac/Frz, or SEAICE_gamma_t/_frz if apply);
296                 remove seaice_summary call (moved to seaice_init_fixed)
297      - seaice_init_fixed.F : set SEAICE_availHeatFrac/Frz depending on
298        SEAICEturbFluxFormula, and seaice_summary call (moved from seaice_readparms)
299      - seaice_summary.F : add missing report of read turbulent flux term set up
300                           and SITRACER.
301      - seaice_check.F : check range; inform and stop if retired CPPs are used
302                         (incl. SEAICE_AGE).
303      - seaice_growth.F : unified use of SEAICE_availHeatFrac/Frz, without
304             CPP switch, same computation as before for the different options.
305      - change results at the truncation level.
306    o pkg/seaice:
307      - remove un-used parameters LAD & MAX_TICE ; add new run-time parameters:
308        useMaykutSatVapPoly (default=F), postSolvTempIter (default=2) and
309        SEAICE_wetAlbTemp (default=-1e-3). Remove option SEAICE_SOLVE4TEMP_LEGACY.
310      - update verification/*/input*/data.seaice:
311        to reproduce previous results with former #defined SEAICE_SOLVE4TEMP_LEGACY
312        code, set useMaykutSatVapPoly=T & postSolvTempIter=0 ;
313        and to reproduce previous results with former non-SOLVE4TEMP_LEGACY code,
314        set SEAICE_wetAlbTemp=0 & SEAICE_snowThick=0.
315    o pkg/seaice/seaice_solve4temp.F (SOLVE4TEMP_LEGACY):
316      - remove LEGACY code for solving for tsurf (A1,A2,A3) but maintain the same
317        algorithm (same choice: useMaykutPolySatVap=T, postSolvTempIter=0);
318        difference in results only due to machine truncation.
319      - remove MAX_TICE (tsurf is always =< TMELT anyway); keep MIN_TICE if using
320        MaykutPolySatVap; keep MIN_LWDOWN.
321      - adapt SEAICE_MODIFY_GROWTH_ADJ code (untested) to non-legacy formulation.
322      - update output of verification exp. lab_sea (4 fwd: 11 cg2d digits except hb87,
323        + 3 AD: 6 digits except evp) and offline_exf_seaice.seaice (12 digits).
324    o pkg/salt_plume:
325      - isolate saltPlumeFlux array exch into a specific S/R called from
326        do_oceanic_phys.F
327      - add interface to pkg/salt_plume (filling of saltPlumeFlux) in pkg/thsice.
328    o verification:
329      - move untested set-up to MITgcm_contrib/verification_other.
330    o pkg/seaice:
331      - retire old way of SEAICE_AGE. Now replaced with ALLOW_SITRACER.
332    o pkg/seaice:
333      - seaice_solve4temp.F (keeping results unchanged):
334        * add 2 future run-time params to select which saturation vapor pressure
335          formula is used and how post-iteration fluxes are set.
336          Temporary set these 2 params according to option SOLVE4TEMP_LEGACY;
337        * New piece of code (not used) to update surf. atmos. heat flux F_ia using
338          the linearized expression to stay consistent with tsurf finding.
339      - seaice_freedrift.F avoid floating exception in sqrt(y) since y=sqrt(x*x)-x
340        can be < 0.
341    o pkg/seaice/seaice_solve4temp.F (SOLVE4TEMP_LEGACY undef):
342      - remove from F_ia (and from it's derivative dFiDTs1) the contribution of
343        conductive heat flux F_c , and add it explicitly when updating tsurf as
344        solution of: Fc = Fia + d/dT(Fia - Fc) *delta.tsurf
345        so that now F_ia has a consistent meaning through the entire routine.
346        This causes differences at truncation level: update output of fwd exp.
347        global_ocean.cs32x15.seaice.
348    o pkg/seaice:
349      - lots of editing/cleaning in seaice_solve4temp.F + better documentation
350        of arrays, sign/direction of fluxes; no effect on results.
351      - replace hard coded 273.16 (=previous value of celsius2K) by celsius2K
352        in seaice_budget_ocean.F & seaice_solve4temp.F (SOLVE4TEMP_LEGACY part);
353        note: this should have been done before changing celsius2K default.
354      - to keep results unchanged, add back old value of celsius2K in verification
355        exp. input*/data : lab_sea (AD), offline_exf_seaice (fwd+AD) & seaice_obcs
356      - replace hard coded seawater freezing temp in seaice_solve4temp.F (part
357        SOLVE4TEMP_LEGACY) of 271.20 (=previous value of celsius2K + default
358        value of SEAICE_freeze) by celsius2K+SEAICE_freeze so that seawater
359        freezing temp is consistent with value in seaice_growth.F ; this causes
360        differences at machine truncation level: update lab_sea AD output (3/4).
361    o pkg/seaice:
362      - mask (in exf_init_fixed.F) atemp,aqh,evap,precip,runoff,lwflx,areamask
363        and climsst/sss even when using seaice (to prevent calculation that might
364        use SST on land); does not affect any verification exp.
365      - apply mask to taux,tauy (in seaice_get_dynforcing.F); update output
366        of lab_sea.fd & lab_sea.hb87 and global_ocean.cs32x15.seaice_dynmix.
367    o pkg/seaice/seaice_growth.F: add mask to avoid non-zero ice thickness
368      over land (non-legacy code)
369    o vectorize salt_plume package:
370      - add extra code to salt_plume_frac and salt_plume_tendency_apply_s
371      - this code computes plumebk everywhere (also over land), thus requires
372        code to avoid divisions by zero and catch the case of kLev=Nr.
373      - efficiency of salt_plume_frac is still sub-optimal
374    o tools (genmake2):
375      - fix makefile NAME specification (option: -makefile NAME) by adding
376        "-f $MAKEFILE" in few places where it was missing including makedepend
377        command (contribution from Paul).
378    
379    checkpoint63i (2012/01/24)
380    o model/src:
381      - add factorized versions of some EOS code to find_rho.F,
382        define USE_FACTORIZED_EOS to turn it on (default for TARGET_NEC_SX)
383    o model/src:
384      - add celsius2K to namelist PARM01; remove unused recip_rhoNil from PARAMS.h;
385      - change default celsius2K from 273.16 to 273.15
386      - to keep results unchanged, add back old value of celsius2K in verification
387        exp. input*/data : aim.5l_cs, 1D_ocean_ice_column, lab_sea (fwd),
388         global_ocean.cs32x15(seaice) & cpl_aim+ocn(input_atm).
389    o model/src: add a little initialisation trick to find_rho.F and find_alpha.F
390      to make TAF generate vectorizable code
391    o pkg/seaice/seaice_evp.F: add code (copied from CICE) that avoids underflows.
392       Turn on by defining SEAICE_EVP_ELIMINATE_UNDERFLOWS. Most compilers
393       have flags that do this more efficiently.
394    o pkg/diagnostics/diagstats_calc.F
395      - for TARGET_NEC_SX fix the treatment of the scaling factor tmpFac=scaleFact
396    o pkg/obcs (with exch2):
397      - derive OB indices in overlap region from OB-InsideMask (in obcs_init_fixed.F)
398        and remove code (in obcs_readparms.F) which was based on EXCH of indices
399        (through buffer) and did not account for exch2 (e.g., CS-grid) topology.
400    o pkg/exf and seaice exp:
401      - change offline_exf_seaice.seaicetd test exp. to use default DIFF1 value (=0)
402        so that switching off area & heff advection flags does not affect results.
403      - change default EXF_LWDOWN_WITH_EMISSIVITY to #define in EXF_OPTIONS.h
404      - keep exp. seaice_obcs & 1D_ocean_ice_column(ad) unchanged (using #undef
405        EXF_LWDOWN_WITH_EMISSIVITY) and, using pkg/exf default emissivities, update
406        results of verification experiments: 1D_ocean_ice_column(fwd),
407        global_ocean.cs32x15.seaice(fwd+ad) & seaice_dynmix(ad), lab_sea (all 8)
408        and offline_exf_seaice (all 4).
409    o pkg/seaice:
410      - remove array YNEG, RIVER, TMIX (replaced by local var) from common block;
411        remove also areaNm1 & hEffNm1 when SEAICE_GROWTH_LEGACY is undef.
412      - fix bug: areaNm1 & hEffNm1 are needed in seaice_growth (SEAICE_GROWTH_LEGACY)
413        but were not filled when resp. SEAICEadvArea=F & SEAICEadvHeff=F and
414        not multi-dim advection;
415      - fix seaice_growth.F to compile with both SEAICE_GROWTH_LEGACY and
416        SHORTWAVE_HEATING #undef.
417    o optim: make Makefile more robust (?)
418    o pkg/obcs:
419      * fix treatment of obcs_read_pickup for TAF
420    o pkg/shelfice:
421      * add missing initialisation of num_shifwflx
422      * new adjoint verification exp. for isomip
423      * change Prandtl and Schmidt numbers from generic formulations
424        (in terms of model diffus. and visc.) to separate runtime
425        parameters, with Holland and Jenkins (1999) default values.
426    o pkg/exf (interpolation):
427      - extended input field (2 rows) near the N & S poles:
428        * fill in with the symetric value (when even Nb of data in longitude)
429        * add average value at the poles only for scalar quantities ; for vector
430          component interpolation, skip the averaging and keep duplicated values,
431          unless the 2 components have same location (uvInterp=T) in which case
432          interpolate the 2 components together using S/R EXF_INTERP_UV.
433      - new S/R EXF_INTERP_UV to interpolate the 2 components of a vector field
434        together: this allows to account properly for local orientation when
435        averaging at N & S pole.
436      - add CPP option EXF_USE_OLD_INTERP_POLE to recover old results regarding
437        exf-interpolation near N & S poles. Undef by default.
438      - add debug check/print on 1rst iter if debugLevel >=2.
439    o pkg/exf:
440      - change masking flags definition (no longer "parameter"), put them in
441        common block and set them in S/R EXF_INIT_FIXED.
442      - change recognized masking flag from s,u,v to c,w,s since the mask
443        to use (maskC,W,S) depends on position on model grid and has little to
444        do with scalar/vector difference; fix masking if using P-coordinates.
445      - fix masking of wind-stress (was wrong if interpolated or read on A-grid)
446        and update results of exp. global_with_exf (x2).
447      - fix setting of zenith-angle table when SHORTWAVE_HEATING is undef.
448    o pkg/obcs
449      - S/R obcs_calc_stevens: fix a small bug (gammat -> gammas where appropriate)
450    o pkg/exf (interpolation):
451      - assume periodicity in X only if input field cover full longitude range.
452      - improve search for lat. index (supposed to be faster, in ~log2(ny) steps,
453        and should vectorise).
454      - fix input lat of the 2 added row (in case we provide N.pole data).
455    
456    checkpoint63h (2011/12/30)
457    o pkg/seaice:
458      - change declaration of UVM from _RL to _RS in order to get B-grid
459        uIce,vIce monitor when _RS = real*4
460    o pkg/offline:
461      - new S/R OFFLINE_RESET_PARMS for resetting main-model params (switch off flags);
462      - compute vertical velocity if not read from file (switch on exactConserv
463        & staggerTimeStep);
464      - fix output of ptracer monitor iter & time for default PTRACERS_monitorFreq.
465    o verification:
466      - update grid-files (in tutorial_held_suarez_cs/input and fizhi-cs-32x32x40/input)
467        with grid-angle generated using "utils/matlab/cs_grid/cubeCalcAngle.m":
468        fix Pb in yG definition @ 2 missing corners (previously yG was averaged);
469      - update output of exp. global_ocean.cs32x15.viscA4 after changing
470        grid-file angles (used here for coriolis-3d);
471      - remove (or gzip) few files not needed to run fizhi-cs experiments.
472    o pkg/exf (vector interpolation):
473      - rotate vector component toward local grid-axis orientation using grid-angles
474        (stored in GRID.h) instead of locally computed rotation angle; keep old code
475        available with exf option EXF_USE_OLD_VEC_ROTATION (undef by default).
476    o pkg/seaice:
477      - allow to compile with exf options ALLOW_ATM_TEMP or ALLOW_DOWNWARD_RADIATION
478        undefined. Fix and remove the stop when ALLOW_RUNOFF is undefined.
479    o pkg/PKG_OPTIONS.h files:
480      - move #include "CPP_OPTIONS.h" just after #include "PACKAGES_CONFIG.h",
481        outside of the #ifdef ALLOW_THISPKG / #endif block.
482      - update verification/*/code/PKG_OPTIONS.h files.
483    o add a verification experiment (offline_exf_seaice/input.seaice) that test
484      the B-grid LSOR solver
485    o pkg/seaice: sort out emissivity and long wave radiation step 2:
486      - add emissivity for snow and ice as new run-time parameters
487        (unfortunately) that default to the corresponding exf values; this
488        changes results in most verification experiments so that for backward
489        compatibility these parameter have to be set explicitly to inconsistent
490        values (ugly);
491      - the exf-flag EXF_LWDOWN_WITH_EMISSIVITY then gets rid off the hard-wired
492        emissivities of 0.97 associated with lwdownloc in S/R seaice_solve4temp
493        until we agree how to handle this bug properly
494    o pkg/exf (interpolation):
495      - add a set of run-time param ({inputfield}_interpMethod), one for
496        each interpolated input field, to select the interpolation method
497        with a value of zero switching off the interpolation;
498      - print interpolation parameters to standard output;
499      - refine exf_check.F accordingly ; stop if USE_NO_INTERP_RUNOFF is defined
500        (to use instead runoff_interpMethod=0 in data.exf).
501      - simplify default setting of interpolation parameters (for all fields,
502        set position to match model grid cell-center position, leading to trivial
503        interpolation in case of regular Lat-Lon grid) and fix for the case of
504        non-uniform delY.
505    o pkg/exf/exf_radiation.F: add the factor ocean_emissivity to lwdown, for
506       within #ifdef EXF_LWDOWN_WITH_EMISSIVITY/#endif. Unless ocean_emissivity=1.
507       this factor is absolutely required, because the lw exitance (= out-going
508       long wave radiation) is emissivity*stefanBoltzmann*T^4 + rho*lwdown,
509       where the reflectivity rho = 1-emissivity for conservation reasons. Once
510       this is established, we can remove the CPP-Flag (if we want to).
511    o pkg/seaice:
512      - qualify a stop statement in S/R seaice_check: EXF_READ_EVAP and
513        ALLOW_BULKFORMULAE are only required if SEAICE_EXTERNAL_FLUXES is defined
514      - sort out emissivity and long wave radiation, step 1: make SEAICE_emissivity
515        what the name implies (and not emissivity*BoltzmannConstant), this means
516        the old default value of 5.5e-8 now means
517        5.5e-8/5.670e-8 = 0.97001763668430343479 as ocean_emissivity in
518        S/R exf_readparms
519      - FV-discretization of the B-grid LSOR solver, turn on with
520        SEAICE_LSRBNEW. This new solver also involves a slight re-organization
521        of the calling routine dynsolver, so that B and C-grid code look a
522        little more alike.
523      - fix index bugs in ostres.F (B-grid code)
524    o pkg/seaice/seaice_ocean_budget.F: change (unused) code to make it look better
525    o pkg/seaice/seaice_readparms.F: make ocean_emissivity*stefanBoltzmann the
526      default for SEAICE_emissivity, if useEXF; requires setting a wrong
527      parameter value in global_ocean.cs32x15/input.seaice/data.seaice for
528      backward compatiblity
529    o model/src: use sigmaR in calc_ivdc
530    
531    checkpoint63g (2011/12/16)
532    o pkg/seaice/seaice_growth.F:
533      fix heat conservation of the coupled ocean-seaice system.
534      when SEAICE_HEAT_CONSERV_FIX is defined, the mismatch of
535      solid vs liquid water treatment is resolved via QNET.
536    o pkg/seaice/seaice_growth.F:
537      add missing term for sublimation in saltFlux, which was breaking conservation.
538    o pkg/seaice/seaice_model.F:
539      Remove this patholigical case treatment in evolution branch,
540      where it is un-necessary and breaks conservation.
541      Update global_ocean.cs32x15/results accordingly for
542      output.seaice.txt output_adm.seaice.txt and output_adm.seaice_dynmix.txt
543    o model/src:
544      useRealFreshWaterFlux: remove masking of EmPmP (using maskInC) in
545      external_forcing_surf.F and apply mask directly in S/R SOLVE_FOR_PRESSURE.
546    o pkg/obcs:
547      modify Stevens boundary conditions so that S/R obcs_calc_stevens computes
548      tendency for temperature and salinity that is then applied to update
549      theta and salt in S/R obcs_apply_ts; this requires proper masking of all
550      horizontal advection and diffusion contributions on the boundary (in
551      S/Rs gad_advection, gad_calc_rhs, gmredi_rtransport, gmredi_calc_diff), and
552      removing the mask in S/R timestep_tracer. The advantage of this approach is
553      that the updated tracer values include contributions from the surface
554      forcing and vertical diffusion.
555      This modification changes exp4.stevens because of vertical diffusion.
556    o model/src:
557      change non-curvilinear grid setting to also work with exch2 + blank tiles:
558      - move delX,delY to new header file (SET_GRID.h) and adjust length to 1rst
559        face dimensions.
560      - new S/R INI_LOCAL_GRID to define model tile-local grid (using same units
561        as delX,delY) and called from S/R INI_CARTESIAN_GRID, INI_CYLINDER_GRID
562        and INI_SPHERICAL_POLAR_GRID.
563      change test-experiment global_ocean.90x40x15:
564      - split the domain in many more tiles (9x4 tiles of 10x10 each);
565      - switch to exch2 and remove 1 blank-tile (but only for MPI test).
566      - update results of both test (std & dwnslp).
567    o pkg/diagnostics/diagstat_calc.F: fix problem with non-initialised halos in
568       tmp-fields for TARGET_NEC_SX at the cost of extra loops and less vectorisation
569    o model/src:
570      - take sigma-coords related code out of update_etah.F into new S/R UPDATE_ETAWS
571        and fix initialisation when using sigma-coords.
572    o model/src:
573     - improve Gael's changes from Jan 14, 2011 "addition of an 'update' of hfacc etc.
574       to their current value at the beginning of forward_step.F": add a new run-time
575       switch "doResetHFactors" (default=false) and use it to do (or not) the resetting.
576     - set doResetHFactors=T in the following test exp:
577        global_ocean.90x40x15/input (rStar) & input.dwnslp (linFS),
578        global_ocean.cs32x15/input.seaice (rStar), hs94.cs-32x32x5/input.impIGW (linFS)
579        and tutorial_global_oce_in_p (nonLinFS in p)
580    o pkg/ecco
581      - added IES cost term
582    o verification/advect_xz
583      - scale down the depth by 1/100 (from 200 km to just 2.km)
584      - add secondary test using divergent flow, r-star and implicit vertical advection.
585      - add note (check_conserve_TS.txt) and matlab script to check global
586        conservation of T & S with NonLin-FreeSurf and Adams-Bashforth.
587    o pkg/rbcs:
588      - add missing relaxUFile & relaxVFile in namelist (in rbcs_readparms.F).
589    o pkg/obcs (Stevens BCs):
590      - fix various problems in the phase speed computations of the Stevens
591        boundary conditions:
592        - sign error for western and southern boundaries,
593        - time tendencies were underestimated by factor of dTracerLev and some just
594          zero (for multidim advection schemes) -> now estimate time tendencies
595          from difference between previous (n) time level and the one before (n-1);
596          this requires storing a field per tracer per boundary, also in the pickup
597          files.
598        - replace deltaTmom in cflMer/Zon computation with dTracerLev
599        - set default phase velocity to cflMer/Zon
600      - update verification experiment exp4.stevens
601    o pkg/generic_advdiff (implicit_r):
602      - fix implicit vertical advection conservation with AB and/or NonLin-FreeSurf
603        (remove Tr*d/dz(w) in gad_implicit_r.F and add it in gad_calc_rhs.F);
604      - fix implicit vertical diffusion or advection with NonLin FreeSurf
605        (was using current recip_hFacC instead of future recip_hFacC): set future
606        recip_hFac in thermodynamics.F and pass & use it in all vertical implicit
607        solver S/R ;
608      - fill diagnostics of vertical advective fluxes (computed from tendency)
609        when using implicit vert. advection;
610      - update output of exp that uses NonLin-FreeSurf & implicit vertical diffusion:
611         global_ocean.90x40x15 (fwd+AD), global_ocean.cs32x15 (4 fwd +4 AD),
612         tutorial_global_oce_in_p (fwd), tutorial_tracer_adjsens (AD)
613         and cpl_aim+ocn (used in ocean); to be fixed: bottom_ctrl_5x5.
614    o pkg/diagnostics:
615      - add diags for T & S tendency which goes through Adams-Bashforth.
616    
617    checkpoint63f (2011/11/30)
618    o pkg/obcs/obcs_calc_stevens.F:
619      - join some loops to reduce number of if-statements
620      - fix a bug in code for northern and southern boundaries.
621    o pkg/seaice/seaice_init_varia.F
622      - undo resetting UVM=0 that has slipped in unnoticed in r1.49 and
623        caused zero ice-velocities for the B-grid code
624    o pkg/seaice/seaice_init_fixed.F
625      - fix a bug in the initialisation of the second metric terms
626        k2AtC and k2AtZ: k2AtC was set to the value of k2AtZ and k2AtZ was 0.
627      - this affects all seaice configurations with useCurviLinearGrid = .true.
628        and SEAICEuseDynamics = .true. (default) and SEAICEuseMetricTerms
629        = .true. (default)
630      - the only verification experiment affected is global_ocean.cs32x15:
631        icedyn, seaice, and seaice_dynmix (AD)
632    o pkg/thsice/thsice_diagnostics_state.F
633      - only for TARGET_NEC_SX: initialise all of tmpFld, so that overlap does
634        not contain garbage that can lead to surprises in diagstats_calc.F
635    o model/src:
636      - move bi,bj loops inside INTEGR_CONTINUITY ;
637      - call INTEGR_CONTINUITY directly from forward_step.F
638        (previously called from momentum_correction_step.F)
639      - call UPDATE_ETAH from integr_continuity.F and update initialise_varia.F,
640        forward_step.F and pkg/ecco/the_main_loop.F
641    o model/src/do_oceanic_phys.F:
642      - reset addMass to zero only if useICEFRONT ;
643      - separated k-loop for rhoInSitu calculation ;
644      - add 2 diagnostics for wVel*delta^k(Rho) at constant pressure (= WdRHO_P)
645        and at constant T,S (= WdRHOdP);
646      NOTE: change diagnostics WRHOMASS : this is now simply the Vertical transport
647        of In-Situ Density (Anomaly) (=wVel*rho^bar-k) (previously was Vertical
648        transport of locally-referenced potential density);
649        to recover old diag: (WRHOMASS)_old = (WRHOMASS)_new -1/2 * (WdRHOdP)
650    o gluemnc:
651      - replace ncrcat with ncks when adding variables to *.glob.nc
652      - change the way variables without record dimensions are handled so that
653        files that have variables with and without record variables can be glued:
654        add a record dimension with a new unique name to be able to differentiate
655        between variable with and without a-prior record dimensions. Remove
656        this record dimension before adding the variable to the *.glob.nc file.
657        This procedure automatically works also for grid.*.nc files that do not
658        have any record dimension.
659    o verification/cpl_aim+ocn:
660      - generate new reference output on baudelaire (gfortran, mpich2) (previously
661        from old aces-grid cluster, ao + ifort) and update 'run_cpl_test' script.
662    o pkg/obcs/obcs_calc_stevens.F:
663      - add code for northern and southern boundaries.
664      - reorder some loops to save some operations and so that drFBar can be scalar
665    o model/src:
666      - re-arrange extrapolation calculation in Adams-Bashforth S/R (affects machine
667        truncation) and add diagnostics for Adams-Bashforth tendency increment.
668      - update test-exp. AD output:
669        1D_ocean_ice_column, bottom_ctrl_5x5, lab_sea.noseaicedyn, obcs_ctrl;
670      and FWD output: exp4 (x3), fizhi-cs-32x32x40, fizhi-cs-aqualev20,
671        front_relax (x3), global_ocean.90x40x15 (x2), global_ocean.cs32x15 (x5),
672        global_ocean_ebm, ideal_2D_oce, internal_wave, isomip (x3), lab_sea (x4),
673        matrix_example, MLAdjust (x5), natl_box (x2), tutorial_advection_in_gyre,
674        tutorial_global_oce_in_p, tutorial_global_oce_latlon and
675        tutorial_plume_on_slope.
676    o pkg/diagnostics/diagstats_calc.F: add special code for TARGET_NEC_SX
677      that vectorises. This code uses 3 extra 2D fields, F90 array assignments
678      and F90 intrinsic routines SUM, MINVAL, MAXVAL, but since TARGET_NEC_SX
679      does not even come with an F77 compiler anymore, this should not be
680      a limitation
681    
682    checkpoint63e (2011/11/06)
683    o pkg/seaice adjoint of LSR:
684      - substantially rework STORE dirs.
685      - add new flag SEAICE_LSR_ADJOINT_ITER and parameter SOLV_MAX_FIXED
686        this flag will do SOLV_MAX_ITERS but only store SOLV_MAX_FIXED fields
687        and only perform SOLV_MAX_FIXED adjoint iters.
688        If flag SEAICE_LSR_ADJOINT_ITER is undef-ined, the store in the iteration
689        always goes to same record, meaning that the last forward field will be
690        the one used in the adjoint - an approximation.
691      - now produces non-zero LSR-related gradients, and acceptable gradients for
692        An's zonal (x-z) test case (to be checked in)
693      - lab_sea: produces acceptable gradients for lab_sea with forward/backward LSR
694        (but these are screwed up by the thermodynamics in the first place);
695        reduce from 4 to 3 timesteps to avoid t.d. issue as temporary solution;
696        output_adm.txt also reflects changes to seaice_lsr
697      - global_ocean.cs32x15:
698        * the "default" input_ad.seaice has been re-defined to always exclude dynamics
699          (output_adm.seaice.txt was updated)
700        * new input_ad.seaice_dynmix tests a forward LSR / backward free-drift
701          (output_adm.seaice_dynmix.txt)
702    o test-exp. exp4+stevens:
703      - switch off pTracers and nonHydrostatic (restart problems with NH); update output
704    o pkg/seaice (lsr solver):
705      - put coriolis term into FORCEX,Y (as in seaice_evp.F; previously in rhsU,V only);
706        update output (change truncation) of FWD test exp lab_sea & global_ocean.cs32x15
707      - fix SEAICEuseFREEDRIFT for new OBCS version (ndef OBCS_UVICE_OLD)
708      - new parameter "LSR_mixIniGuess" allows (if=2,4) to mix free-drift solution
709        into initial guess for linearised solver; use weight ~ (1/err)^2,4.
710      - compute (with new S/R) and print initial (+ free-driff sol. if available)
711        and final residual of linearised system.
712    o pkg/pp81: add diagnostics for vertical eddy viscosity and diffusivity
713      (requires new subroutines pp81_init_fixed.F/pp81_diagnostics_init.F)
714    o pkg/obcs: Stevens BCs (still only for east and west)
715      - fix Stevens BCs by using intermediate velocities of previous
716        time step as "baroclinic" contribution rather velocity of one grid cell
717        inside the boundaries; more consistent but makes the entire treatment
718        more complicated, requires new pickup files and two new S/Rs:
719        obcs_copy_uv_n and obcs_save_uv_n
720        keep old version with flag OBCS_STEVENS_USE_INTERIOR_VELOCITY
721        (undefined by default)
722      - silently move computation of some grid factors into separate loops to
723        save some recomputations
724      - add a hack for non-linear free surface
725      - add a verification experiment to exp4 that tests this code
726    o make gluemnc/xplodemnc work with (moron) non-GNU shell tools
727    
728    checkpoint63d (2011/10/25)
729    o pkg/obcs + seaice-dynamics:
730      - new implementation calls OBCS_APPLY_UVICE (in seaice_dynsolver.F) before
731        solving for uIce,vIce and prevent SEAICE_LSR or SEAICE_EVP to modify OB
732        values (consistent with an implicit method).
733      - add option OBCS_UVICE_OLD (in OBCS_OPTIONS.h, defined by default) to
734        return to older implementation (same results as before); note that none of
735        the "experimental" OBCS_SEAICE options are implemented in the new version.
736      - switch test exp. seaice_obcs to use new version (update output).
737    o pkg/seaice:
738      - add few stop (B-grid & CS-exch, B-grid & obcs, AUTODIFF & SEAICE_maskRHS)
739      - add parenthesis in Water-Ice drag calculations (evp & lsr);
740      - in seaice_lsr.F, simplify and fix AA3 setting in case sNx or sNy=1;
741        and fix case SEAICE_waterDrag=0 (but unstable if no or little seaice)
742      - update output of test exp lab_sea that uses evp or lsr (fwd+ad)
743        and global_ocean.cs32x15 (icedyn & seaice fwd+ad).
744    o pkg/layers:
745      - Include potential density as new coordinate (Thanks to David Munday)
746    o pkg/dic:
747      - Remove subroutine CALC_PCO2_APPROX_CO3 from carbon_chem.F and add
748        carbonate computation/output to CALC_PCO2_APPROX
749    o pkg/generic_advdiff
750      - make TAF generate code that vectorizes:
751        gad_dst3fl_adv_*.F, gad_u3c4_impl_r.F
752    o model/src:
753      - improve vectorization also for adjoint code of
754        solve_tridiagonal and solve_pentadiagonal. As this requires up to
755        5 new 3D-fields, this code is only turned on for the combination of
756        ALLOW_AUTODIFF_TAMC and TARGET_NEC_SX. Also remove error message
757        for singular matrix check (only for TARGET_NEC_SX).
758      - remove hard-wiring of CPP-flag ALLOW_SOLVERS_KLOOPINSIDE to
759        ALLOW_AUTODIFF. This flag now needs to be set outside of
760        solve_tri/pentadiagonal.F
761    o pkg/exf:
762      - fix previous modif in exf_readparms.F (revision 1.66: treatment of
763        optional namelist EXF_NML_OBCS).
764      - add many debug-print (to trace down where pkg/cal error msg comes from)
765    o pkg/mom_vecinv/mom_vi_hdissip.F
766      - rearrange loops so that vectorization is improved and in particular
767        the adjoint routine vectorizes. The code is a little longer now, but I
768        think easier to read.
769        Note: CPP-flag MOM_VI_ORIGINAL_VISCA4 is not tested.
770    o pkg/seaice:
771      - allow to specify initial seaice velocity from files (uIceFile,vIceFile)
772    o pkg/exch2:
773      - alternative code (without tile x tile matrix) for cumulated (global) sum;
774        used as default; keep using matrix version in adjustment.cs-32x32x1.
775    o tools/build_options:
776      - after merging some MPI and/or multi-threads specific optfiles so that
777        the modified default optfile support both built (using genmake2 -mpi
778        for the MPI built, using genmake2 -omp for OpenMP built),
779        move now obsolete optfiles to tools/build_options/unsupported/
780       (add copy of email sent to support list in doc/optfiles_changes.txt)
781    
782    checkpoint63c (2011/09/28)
783    o pkg/ebm:
784      - fix ebm_zonalmean.F for several procs in Ydir (nPy > 1); update output of
785        test exp. global_ocean_ebm (affects machine truncation, 12 digits for cg2d)
786    o pkg/seaice (SItracer pickup)
787    * Simple code for pickup of SItracer fields (#define ALLOW_SITRACER)
788      To be done:
789      - thorough testing of missing fields in S/R seaice_read_pickup
790      - thorough matching between generic tracers and specific fields used
791        (e.g. volume-weighted age, area-weighted age, salinity, ...)
792    o pkg/grdchk:
793      - all procs calculate and print finite-difference gradient (for testreport)
794      - change description output used by testreport;
795      - AD testing: also compare and report Finite-difference gradient;
796        => update all output_adm*.txt
797    o test exp. global_ocean_ebm:
798      - switch back useRealFreshWaterFlux (no problem anymore with run-off);
799        and turn on exactConserve; update (fwd) output.
800    o pkg/seaice (LSR):
801      - print to STDOUT number of solver iterations at SEAICE_monFreq interval.
802      - modify solver to deal cleanly with u/v switch at face edges (CS-grid):
803        * identical results with non-CS topology (but save up to half of EXCH calls)
804        * no much changes in cs-32 verification tests since no ice at face edges
805         (differences due to convergence criteria, since nb of iterations changed)
806        * expect some differences on lat-lon-cap grid.
807        update FWD results of global_ocean.cs32x15 test exp. (icedyn & seaice)
808  o pkg/exch2:  o pkg/exch2:
809    - add new CPP option to disable Cumul-Sum matrix (to save storage when using    - add new CPP option to disable Cumul-Sum matrix (to save storage when using
810      many tiles); until alternative coding is added, just add a stop.      many tiles); until alternative coding is added, just add a stop.

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