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revision 1.1295 by jmc, Sat Sep 11 21:39:13 2010 UTC revision 1.1655 by dimitri, Sat Apr 21 23:55:37 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 ad test experiments:
8     - update and rename to "ad_optfile.local" local AD-optfile specific to a
9       particular adjoint verification experiment (in verification/*/code_ad/)
10    o pkg/seaice & pkg/exf:
11     - Part two of ECCO-CLIVAR code merges.
12       Completes merge of seaice area relax. code.
13       Requires unified CPP option EXF_ALLOW_SEAICE_RELAX
14       to be set in EXF_OPTIONS.h since this pkg controls its I/O
15       (and avoids second CPP option in SEAICE_OPTIONS.h)
16     - change default value of costIceStart & costIceEnd to a valid date.
17     - add snowPrecip to HSNOW in seaice_growth
18    o pkg/ptracers:
19     - move ptracers summary and setup check into separated S/R ; add a check for
20       valid PTRACERS_Iter0 value (error+stop or just warning).
21    o pkg/cal (+ pkg/ecco):
22     - avoid calling a S/R with 2 times the same arg (FWD: unless both are only used
23       as input; and for AD, unless both are not differentiable (e.g., k index)).
24    o model/src:
25     - define internal flag "uniformFreeSurfLev" (=T when free-surface level-index
26       is everywhere k=1) to speed-up some calculations (by pass kSurf reference);
27       temporary set to usingZCoords value (to be changed to F when using shelfice).
28     - hydrostatic pressure: implement partial cell near the surface also for
29       Z-coordinates (for the case where uniformFreeSurfLev=F); replace test on
30       usingZCoords with test on uniformFreeSurfLev where needed (in NonHyd code).
31    o pkg/ctrl/ctrl_init.F:
32     - add a formal parameter to s/r ctrl_init_rec to print
33       xx_$(ctrl_valiable)_file for easier debugging
34     - move call of cal_* routines into the if-block where they are really
35       needed so that xx_$(ctrl_variable)_period can be 0 or -12 without having
36       to specify a startdate
37    o pkg/seaice:
38     - update comments in SEAICE_OPTIONS.h (+ similar update of lab_sea/code and
39       global_ocean.cs32x15/code versions).
40     - turn on seaice Multi-category (in data.seaice, SEAICE_multDim=7) for
41       verification experiment global_ocean.cs32x15.seaice and update results.
42    o pkg/exf:
43     - new S/R EXF_GETFIELD_START to return starting-time of a forcing field
44       (according to useExfYearlyFields).
45    o pkg/cal:
46     - move calendar setting & summary (previously in cal_readparams.F) into new
47       S/R CAL_INIT_FIXED to be called later in the initialisation process, once
48       length of the simulation is set (after SET_PARMS call); This is an attempt
49       to fix Pb when, e.g.: pkg/longstep, modifies the length of the run.
50     - For safety: keep a record of pkg/cal parameter settings status
51               to allow to STOP if one pkg/cal S/R is called too early.
52     - add a stop in all basic pkg/cal subroutines if called before setting is done.
53     - modify cal_getdate.F: stop when nothing was returned;
54       if called with myIter=-1, simply retrun modelBaseDate (1,2 = startDate_1,_2);
55       this allows to remove "cal.h" from seaice_read_parms.F & init_mnc_vars.F.
56    
57    checkpoint63l (2012/04/04)
58    o pkg/bbl:
59      - fix call to FIND_RHO_2D in bbl_calc_rho.F (case multi-tiles per proc);
60        update global_with_exf output.yearly.txt file.
61    o pkg/cal:
62      - start to clean-up cal_set.F ; fix for the case where baseTime is non-zero.
63      - remove 2 unsused and very short (1 line only) functions ;
64      - remove unsused subroutines from AD-Diff list.
65    o model/src:
66      - start to implement clean wait to stop in initialization S/R (config_check.F,
67         packages_check.F, ini_parms.F and pkg/obcs/obcs_check.F + pkg/mypackage)
68    o folowing PRINT_MESSAGE changes:
69      - remove reminder multiple print to the same file (STDOUT) when multi-threads.
70    o pkg/bbl:
71      - modification so it can work with z*
72      - replace deltaT with dTtracerLev(k) for asynchronous time stepping
73      - global_with_exf/input.yearly verification; changes output.yearly.txt
74    o eesupp/src:
75      - PRINT_MESSAGE: use OpenMP critical instruction (similar to PRINT_ERROR);
76        writing to unit 0 (if unit=errorMessageUnit) extended to the case myThid=1
77      - CHECK_THREADS: specific code if using OpenMP threading: improve checking of
78        # of threads across processors (e.g., different env OMP_NUM_THREADS setting)
79      - improve special preliminary call to EESET_PARMS (if eedata is read 2 times).
80      - when using MPI, always set usingMPI=T ; set default accordingly and stop
81        if not consistent.
82      - ALL_PROC_DIE: add a BARRIER after MPI_FINALIZE call ; skip this when thread
83        argument is zero (in case called within single-thread section).
84    o pkg/fizhi:
85        clean-up turbulence cold-start switch: decided in fizhi_init_vars.F, stored
86        in common bloc (fizhi_coms.h) and then passed as argument up to S/R TURBIO.
87    o pkg/exch2:
88      - add argument "updateCorners" to S/R exch2_get_uv_bounds (enable to
89        activate EXCH_IGNORE_CORNERS in vector EXCH S/R).
90      - switch 1rst EXCH call to IGNORE_CORNERS (instead of UPDATE_CORNERS)
91        but keep the 2nd with UPDATE_CORNERS: this prevents overwriting good data
92        with bad ones coming from a not-yet-updated halo.
93        This should fix the problem when sNx <> sNy and GCD(sNx,sNy) < 2*Olx.
94    o pkg/frazil:
95        move FrzForcT diag from frazil_diagnostics_state.F to frazil_calc_rhs.F
96        http://mitgcm.org/pipermail/mitgcm-devel/2012-March/005384.html
97    o model/src/config_check.F: add a check for OLx>sNx/OLy>sNy
98    o verification/lab_sea
99      * #undef SEAICE_EXCLUDE_FOR_EXACT_AD_TESTING
100      * #define ALLOW_SST_CONTROL & ALLOW_SST_CONTROL
101      * nTimeSteps 3 -> 4
102      * changed reference output accordingly
103    o pkg/ctrl:
104      * fix ctrl_get_gen for xx_sst, xx_sss
105    o pkg/fizhi:
106      - fix 2 calls to S/R GRD2MSC (argument igrd) in update_earth_exports.F
107        update results of exp. fizhi-cs-32x32x40 (fail with only 6 digits for cg2d)
108      - by default, use new version of S/R GETPWHERE (#define TRY_NEW_GETPWHERE);
109        fix few out-of-bounds indices in referencing vars (initialise igrd to 1);
110        clean-up fizhi_turb.F (remove unused & uninitialised qdiaglsm array).
111    o pkg/gmredi:
112      - add diagnostic of Redi (main diagnonal) vertical diffusive flux of Temp
113    o pkg/fizhi:
114      - fix few initialisation and multi-tile Pb: aqualev & gridalt now pass the
115        (old)aces open64 tuv test.
116    o pkg/icefront: fix bug and reorder loop in icefront_init_varia.F
117    o pkg/mom_vecinv:
118      - fix 1 loop range in mom_vecinv.F to be like all the other loops which
119        set/update gu,gv/Diss (fix Pb of uninitialised fVerUkp in admom_vecinv
120        with non-lin free-surf).
121    o model/src: move k-loop outside of i/j-loops when (re-)computing R_low
122      in ini/update_masks_etc.F in order to avoid -O3 optimization problems with
123      some compilers (gfortran 4.6.0 on MacOS)
124    o momentum:
125      - separate fVer?(:,:,kUp) & fVer?(:,:,kDown) in argument list of MOM_FLUXFORM
126        & MOM_VECINV subroutines (to help TAF). This fixes Pb of uninitialised
127        fVer?(kUp) in admom_fluxform with non-lin free-surf or bottom control.
128    
129    checkpoint63k (2012/03/17)
130    o model/src:
131       - selectAddFluid (ALLOW_ADDFLUID): add missing term in horizontal momentum
132         flux-form (mom_fluxform.F) and vertical momentum (calc_gw.F) equations.
133       - SOLVE_DIAGONAL: switch default to use adjoinable & vectorized version
134         (#undef SOLVE_DIAGONAL_LOWMEMORY); update output of exp. front_relax.bvp.
135    o model/src: solve_*diagonal.F
136       - replace division with multiplication by inverse (similar to original version)
137         update output of AD exp. global_ocean.90x40x15.
138       - fix pkg/gmredi/gmredi_calc_psi_bvp.F & pkg/ggl90/ggl90_calc.F
139         to enable the use of the vectorized & differentiable solve_tridiagonal.F
140       - test exp. global_ocean.90x40x15/input_ad: switch to advection scheme 20 for
141         vertical advection (to get solve_tridiagonal tested in AD mode).
142    o pkg/seaice: ECCO-CLIVAR merge:
143      1. seaice AREA relaxation
144         * CPP option: SEAICE_ALLOW_AREA_RELAXATION
145         * runtime flag: SEAICE_tauAreaObsRelax
146      2. modified global mean cost imbalance code: CPP option
147          ALLOW_SSH_GLOBMEAN_COST_CONTRIBUTION
148    o another iteration on solve_*diagonal.F
149       Make choices independent of AUTODIFF
150       Default will be the adjoinable vectorized version.
151       Alternative choices are:
152       * non-adjoinable original version with low memory footprint:
153         #define SOLVE_DIAGONAL_LOWMEMORY
154       * still adjoinable but does not vectorize (k as inner-most loop):
155         #define SOLVE_DIAGONAL_KINNER (keeping SOLVE_DIAGONAL_LOWMEMORY undef)
156    o testreport
157     - add option to use a home made wrapper around "make"
158     - remove MITGCM_IEEE env. variable (no longer active)
159    o pkg/shelfice
160     - improve computation of friction velocity for velocity dependent
161       exchange coefficients: include velocities into SHELFICEBoundaryLayer
162       block to average velocities vertically
163     - add TAF store directives for SHI_ALLOW_GAMMAFRICT
164    o Modify diagonal solvers, now three versions (upon request):
165      #ifndef SOLVE_DIAGONAL_AUTODIFF
166        1. default version (dating back a while ago)
167      #else /* def SOLVE_DIAGONAL_AUTODIFF */
168      # ifdef SOLVE_DIAGONAL_KINNER
169        2. adjoinable version with k-innermost loop (G. Forget)
170      # else
171        3. adjoinable vectorized version of 2.
172      # endif
173      #endif /* SOLVE_DIAGONAL_AUTODIFF */
174      All flags are currently set within routines, but could/should be moved to CPP-options.
175      Array bounds for 1. are as before, for 2.,3. cover the entire domain
176      (could be changed for 1. too).
177    o verification/lab_sea (fwd):
178      - update the 4 fwd lab_sea test experiment: no longer SEAICE_GROWTH_LEGACY,
179        use 7 categories (except hb87), new solve4temp params (except salt_plume),
180        constant salinity (=4) or variable salinity (salt_plume) done through
181        SItracer.
182    o pkg/seaice:
183      - rename parameters: SIsalFrac to SEAICE_saltFrac & SIsal0 to SEAICE_salt0;
184      - remove old parameters ( SEAICE_freeze, SEAICEturbFluxFormula, SEAICE_gamma_t,
185         SEAICE_gamma_t_frz, SEAICE_availHeatTaper & SEAICE_availHeatFracFrz)
186        from SEAICE_PARMS.h ; still need to fix seaice_cost_sst.F (broken when
187        SEAICE_freeze got retired) but already better than previously with
188        SEAICE_freeze=123456.7 deg.C;
189      - move setting of facOpenGrow/Melt from SEAICE_INIT_FIXED to SEAICE_READPARMS
190        (safer multi-threaded setting); always set SEAICEuseEVP;
191      - setting of ocean-ice turb. flux coeff: moved from SEAICE_CHECK to
192        SEAICE_READPARMS & SEAICE_INIT_FIXED (this fixes wrong summary report);
193        stop if multiple specifications for the same coeff; make sure default
194        SEAICE_mcPheePiston is compatible with drF(1) & deltaT.
195    o pkg/obcs:
196      - allow to switch to upwind 1rst order advection scheme for the advective
197        flux computation at the open-boundary; disabled for adjoint built.
198    o pkg/ptracers:
199      - rename PTRACERS_RESTART.h -> PTRACERS_START.h
200      - rename ptracers_fields_blocking_exchanges.F -> ptracers_fields_blocking_exch.F
201      - add parameter to decide when to start a tracer; use internal flag to
202        know which tracer to step-forward; switch this internal flag at the top
203        of forward_step.F (new S/R PTRACERS_SWITCH_ONOFF); for now, not enabled
204        for adjoint built.
205    o pkg/seaice:
206      - add SEAICE_SIZE.h anywhere in the code where SEAICE.h is included ;
207      - move MULTDIM declaration and setting from SEAICE.h to SEAICE_SIZE.h ;
208      - keep experiment offline_exf_seaice truly single category (set MULTDIM=1).
209    o pkg/ecco:
210      - fix writing of output file DiagnosCost_ClimSalt/Theta
211        and DiagnosCost_DriftSalt/Theta (if multi-tiles per proc).
212    o pkg/seaice:
213      - add missing initialisation of COR_ICE array in dynsolver.F
214      - merging SEAICE_MULTICATEGORY define and undef cases. Now the same code is
215        compiled either way, and is tested in all exps (multidim was only tested
216        in lab_sea ad before).
217      - cosmetic change to prepare for future addition of ITD. no change to results.
218        no defaults change.
219      - added run time param SEAICE_multDim (7 for SEAICE_MULTICATEGORY, 1 otherwise).
220      - by lack of adequate verification experiments, I further used custom versions
221        of global_ocean.cs32x15 to test multicat or not, with pickup or not. All
222        should be correct.
223      - avoid recomputations in ad.
224    o array initialisation in adjoint mode:
225      1) pkg/mom_common/mom_calc_ke.F:
226        add full array initialisation of KE inside mom_calc_ke.F (ALLOW_AUTODIFF_TAMC):
227        The S/R which calls MOM_CALC_KE initialises KE but in some recomputation
228        part this initialisation is gone, resulting in Floating Point Exception
229        (caught by open64 compiler with debug option).
230      2) model/src/convective_weights.F
231        set output convectCount over the full array range (instead of doing
232        an update): this fix a similar issue when called within recomputation (adjoint)
233        which could by-pass the initialisation (normally done in the caller S/R).
234    o pkg/seaice:
235      - final version of turbulent flux params, as agreed at MIT ice meet:
236           SEAICE_mcPheePiston (default is ~ 0.000875)
237           SEAICE_mcPheeTaper (default is 0.)
238           SEAICE_frazilFrac (defualt is 1.)
239           SEAICE_mcPheeStepFunc (default is false)
240      - changes results at trunction error level
241      - ifdef SEAICE_EXTERNAL_FLUXES, disallow SEAICE_waterAlbedo
242    o added pkg/frazil:
243      - see frazil_description.tex for details
244      - verification experiment is global_with_exf/input.yearly; changes output.yearly.txt
245    o pkg/shelfice/shelfice_thermodynamics.F
246      - fix exponents for velocity dependent exchange coefficients: change
247        from 2/3(=0) to 0.66666666666666667
248      - move computation of velocity dependent exchange coefficients into
249        separate loop, so that it applies to both thermodynamics
250      - move some divisions by constants out of loops
251    
252    checkpoint63j (2012/02/16)
253    o pkg/seaice:
254      - overhaul of seaice_summary.F after feb 2012 clean-up of seaice_growth.F etc.
255      - SItracer:  added run time params, and allow coupling to ocn salinity.
256    o pkg/seaice: remove (almost) all divisions by constants within loops
257      in seaice_growth.F and seaice_solve4temp.F, this changes (only) the cg2d
258      results of global_ocean.cs32x15.seaice from 16 to 11 digits (but only
259      those, caused by 1/QI -> recip_QI) -> update output.seaice.txt,
260      output_adm.seaice_dynmix.txt and also lab_sea: output_adm.evp.txt
261    o pkg/seaice :
262      - simplify McPhee tapering, and allow to use it with SEAICEturbFluxFormula
263        = 1 or 2, using newly added run time parameter SEAICE_availHeatTaper.
264      - fix d_AREAbyATM, d_AREAbyOCN, d_AREAbyICE diags I broke in r1.148.
265      - add permanent SItflux diag that corresponds to TFLUX but includes
266        ice+snow. Hence SItflux-TFLUX should match the ice+snow heat budget.
267      - allow activation/testing of a fix for suspected missing term in
268        ocn-ice heat budget (to be confirmed). To test this, you want to
269        undef SEAICE_DISABLE_HEATCONSFIX, and then set the run time param
270        SEAICEheatConsFix to .TRUE. that also allows the 'SIaaflux' diagnostic.
271      - no change in results, fwd or ad.
272    o global_ocean.cs32x15/results: 3 changes following from the pkg/seaice commit below:
273      - switch to variable freezing point.
274           Results change : cg2d -> 1 digits; ad -> 3-6-6 digits.
275      - bug fix : the sublimation term that was missing is now activated.
276           Results change : cg2d -> 2 digits; ad -> 8-6-6 digits.
277      - bug fix : flooding sign term for SIsal0.NE.0.
278           Result change : cg2d -> 8 digits; ad -> 11-12-9 digits.
279    o pkg/seaice:
280      - unified freezing point treatment : the old SEAICE_VARIABLE_FREEZING_POINT
281        is now the default, and the old default constant freezing point is recovered
282        with SEAICE_tempFrz0    = -1.96,
283             SEAICE_dTempFrz_dS = 0.,
284      - retire SEAICE_freeze (= the old way of specifycing the constant freezing point)
285      - remove ALLOW_SEAICE_FLOODING brackets; run time switch is already there.
286      - bug fix (thanks to M. Losch) : the sublimation term that was missing is now
287        activated. To reproduce old results with this bug define SEAICE_DISABLE_SUBLIM.
288      - bug fix (silly me) : flooding sign term (seaice_growth.F r 1.149line 1211)
289        was wrong for SIsal0.NE.0. Changes cs32x15 results (see above item for detail).
290      - bug fix (thanks to O. Jahn) : area loss for melting  got messed up in
291        seaice_growth r149 for legacy branch (no results change).
292      - introduce SEAICE_CAP_SUBLIM : caps sublimation heat flux in solve4temp (code
293        from I. Fenty).
294      - results did not change except for global_ocean.cs32x15, mostly due to the
295        switch to variable freezing point (see above item for detail).
296    o pkg/thsice:
297      - fix and simplify interface to salt_plume pkg ; diagnose directly amount of
298        seawater freezing in thsice_calc_thickn (not used).
299    o pkg/seaice: turbulent flux term specification via run time params.
300      - replace CPP switches with run time switches to facilitate testing
301      - retired CPPs : MCPHEE_OCEAN_ICE_HEAT_FLUX,
302                       GRADIENT_MIXED_LAYER_TURBULENCE_FACTOR
303      - added runtime parameter : SEAICEturbFluxFormula
304      - move Mcphee constants to SEAICE_PARAMS.h
305      - seaice_readparms.F : read turbulent flux term params (SEAICEturbFluxFormula;
306                 SEAICE_availHeatFrac/Frz, or SEAICE_gamma_t/_frz if apply);
307                 remove seaice_summary call (moved to seaice_init_fixed)
308      - seaice_init_fixed.F : set SEAICE_availHeatFrac/Frz depending on
309        SEAICEturbFluxFormula, and seaice_summary call (moved from seaice_readparms)
310      - seaice_summary.F : add missing report of read turbulent flux term set up
311                           and SITRACER.
312      - seaice_check.F : check range; inform and stop if retired CPPs are used
313                         (incl. SEAICE_AGE).
314      - seaice_growth.F : unified use of SEAICE_availHeatFrac/Frz, without
315             CPP switch, same computation as before for the different options.
316      - change results at the truncation level.
317    o pkg/seaice:
318      - remove un-used parameters LAD & MAX_TICE ; add new run-time parameters:
319        useMaykutSatVapPoly (default=F), postSolvTempIter (default=2) and
320        SEAICE_wetAlbTemp (default=-1e-3). Remove option SEAICE_SOLVE4TEMP_LEGACY.
321      - update verification/*/input*/data.seaice:
322        to reproduce previous results with former #defined SEAICE_SOLVE4TEMP_LEGACY
323        code, set useMaykutSatVapPoly=T & postSolvTempIter=0 ;
324        and to reproduce previous results with former non-SOLVE4TEMP_LEGACY code,
325        set SEAICE_wetAlbTemp=0 & SEAICE_snowThick=0.
326    o pkg/seaice/seaice_solve4temp.F (SOLVE4TEMP_LEGACY):
327      - remove LEGACY code for solving for tsurf (A1,A2,A3) but maintain the same
328        algorithm (same choice: useMaykutPolySatVap=T, postSolvTempIter=0);
329        difference in results only due to machine truncation.
330      - remove MAX_TICE (tsurf is always =< TMELT anyway); keep MIN_TICE if using
331        MaykutPolySatVap; keep MIN_LWDOWN.
332      - adapt SEAICE_MODIFY_GROWTH_ADJ code (untested) to non-legacy formulation.
333      - update output of verification exp. lab_sea (4 fwd: 11 cg2d digits except hb87,
334        + 3 AD: 6 digits except evp) and offline_exf_seaice.seaice (12 digits).
335    o pkg/salt_plume:
336      - isolate saltPlumeFlux array exch into a specific S/R called from
337        do_oceanic_phys.F
338      - add interface to pkg/salt_plume (filling of saltPlumeFlux) in pkg/thsice.
339    o verification:
340      - move untested set-up to MITgcm_contrib/verification_other.
341    o pkg/seaice:
342      - retire old way of SEAICE_AGE. Now replaced with ALLOW_SITRACER.
343    o pkg/seaice:
344      - seaice_solve4temp.F (keeping results unchanged):
345        * add 2 future run-time params to select which saturation vapor pressure
346          formula is used and how post-iteration fluxes are set.
347          Temporary set these 2 params according to option SOLVE4TEMP_LEGACY;
348        * New piece of code (not used) to update surf. atmos. heat flux F_ia using
349          the linearized expression to stay consistent with tsurf finding.
350      - seaice_freedrift.F avoid floating exception in sqrt(y) since y=sqrt(x*x)-x
351        can be < 0.
352    o pkg/seaice/seaice_solve4temp.F (SOLVE4TEMP_LEGACY undef):
353      - remove from F_ia (and from it's derivative dFiDTs1) the contribution of
354        conductive heat flux F_c , and add it explicitly when updating tsurf as
355        solution of: Fc = Fia + d/dT(Fia - Fc) *delta.tsurf
356        so that now F_ia has a consistent meaning through the entire routine.
357        This causes differences at truncation level: update output of fwd exp.
358        global_ocean.cs32x15.seaice.
359    o pkg/seaice:
360      - lots of editing/cleaning in seaice_solve4temp.F + better documentation
361        of arrays, sign/direction of fluxes; no effect on results.
362      - replace hard coded 273.16 (=previous value of celsius2K) by celsius2K
363        in seaice_budget_ocean.F & seaice_solve4temp.F (SOLVE4TEMP_LEGACY part);
364        note: this should have been done before changing celsius2K default.
365      - to keep results unchanged, add back old value of celsius2K in verification
366        exp. input*/data : lab_sea (AD), offline_exf_seaice (fwd+AD) & seaice_obcs
367      - replace hard coded seawater freezing temp in seaice_solve4temp.F (part
368        SOLVE4TEMP_LEGACY) of 271.20 (=previous value of celsius2K + default
369        value of SEAICE_freeze) by celsius2K+SEAICE_freeze so that seawater
370        freezing temp is consistent with value in seaice_growth.F ; this causes
371        differences at machine truncation level: update lab_sea AD output (3/4).
372    o pkg/seaice:
373      - mask (in exf_init_fixed.F) atemp,aqh,evap,precip,runoff,lwflx,areamask
374        and climsst/sss even when using seaice (to prevent calculation that might
375        use SST on land); does not affect any verification exp.
376      - apply mask to taux,tauy (in seaice_get_dynforcing.F); update output
377        of lab_sea.fd & lab_sea.hb87 and global_ocean.cs32x15.seaice_dynmix.
378    o pkg/seaice/seaice_growth.F: add mask to avoid non-zero ice thickness
379      over land (non-legacy code)
380    o vectorize salt_plume package:
381      - add extra code to salt_plume_frac and salt_plume_tendency_apply_s
382      - this code computes plumebk everywhere (also over land), thus requires
383        code to avoid divisions by zero and catch the case of kLev=Nr.
384      - efficiency of salt_plume_frac is still sub-optimal
385    o tools (genmake2):
386      - fix makefile NAME specification (option: -makefile NAME) by adding
387        "-f $MAKEFILE" in few places where it was missing including makedepend
388        command (contribution from Paul).
389    
390    checkpoint63i (2012/01/24)
391    o model/src:
392      - add factorized versions of some EOS code to find_rho.F,
393        define USE_FACTORIZED_EOS to turn it on (default for TARGET_NEC_SX)
394    o model/src:
395      - add celsius2K to namelist PARM01; remove unused recip_rhoNil from PARAMS.h;
396      - change default celsius2K from 273.16 to 273.15
397      - to keep results unchanged, add back old value of celsius2K in verification
398        exp. input*/data : aim.5l_cs, 1D_ocean_ice_column, lab_sea (fwd),
399         global_ocean.cs32x15(seaice) & cpl_aim+ocn(input_atm).
400    o model/src: add a little initialisation trick to find_rho.F and find_alpha.F
401      to make TAF generate vectorizable code
402    o pkg/seaice/seaice_evp.F: add code (copied from CICE) that avoids underflows.
403       Turn on by defining SEAICE_EVP_ELIMINATE_UNDERFLOWS. Most compilers
404       have flags that do this more efficiently.
405    o pkg/diagnostics/diagstats_calc.F
406      - for TARGET_NEC_SX fix the treatment of the scaling factor tmpFac=scaleFact
407    o pkg/obcs (with exch2):
408      - derive OB indices in overlap region from OB-InsideMask (in obcs_init_fixed.F)
409        and remove code (in obcs_readparms.F) which was based on EXCH of indices
410        (through buffer) and did not account for exch2 (e.g., CS-grid) topology.
411    o pkg/exf and seaice exp:
412      - change offline_exf_seaice.seaicetd test exp. to use default DIFF1 value (=0)
413        so that switching off area & heff advection flags does not affect results.
414      - change default EXF_LWDOWN_WITH_EMISSIVITY to #define in EXF_OPTIONS.h
415      - keep exp. seaice_obcs & 1D_ocean_ice_column(ad) unchanged (using #undef
416        EXF_LWDOWN_WITH_EMISSIVITY) and, using pkg/exf default emissivities, update
417        results of verification experiments: 1D_ocean_ice_column(fwd),
418        global_ocean.cs32x15.seaice(fwd+ad) & seaice_dynmix(ad), lab_sea (all 8)
419        and offline_exf_seaice (all 4).
420    o pkg/seaice:
421      - remove array YNEG, RIVER, TMIX (replaced by local var) from common block;
422        remove also areaNm1 & hEffNm1 when SEAICE_GROWTH_LEGACY is undef.
423      - fix bug: areaNm1 & hEffNm1 are needed in seaice_growth (SEAICE_GROWTH_LEGACY)
424        but were not filled when resp. SEAICEadvArea=F & SEAICEadvHeff=F and
425        not multi-dim advection;
426      - fix seaice_growth.F to compile with both SEAICE_GROWTH_LEGACY and
427        SHORTWAVE_HEATING #undef.
428    o optim: make Makefile more robust (?)
429    o pkg/obcs:
430      * fix treatment of obcs_read_pickup for TAF
431    o pkg/shelfice:
432      * add missing initialisation of num_shifwflx
433      * new adjoint verification exp. for isomip
434      * change Prandtl and Schmidt numbers from generic formulations
435        (in terms of model diffus. and visc.) to separate runtime
436        parameters, with Holland and Jenkins (1999) default values.
437    o pkg/exf (interpolation):
438      - extended input field (2 rows) near the N & S poles:
439        * fill in with the symetric value (when even Nb of data in longitude)
440        * add average value at the poles only for scalar quantities ; for vector
441          component interpolation, skip the averaging and keep duplicated values,
442          unless the 2 components have same location (uvInterp=T) in which case
443          interpolate the 2 components together using S/R EXF_INTERP_UV.
444      - new S/R EXF_INTERP_UV to interpolate the 2 components of a vector field
445        together: this allows to account properly for local orientation when
446        averaging at N & S pole.
447      - add CPP option EXF_USE_OLD_INTERP_POLE to recover old results regarding
448        exf-interpolation near N & S poles. Undef by default.
449      - add debug check/print on 1rst iter if debugLevel >=2.
450    o pkg/exf:
451      - change masking flags definition (no longer "parameter"), put them in
452        common block and set them in S/R EXF_INIT_FIXED.
453      - change recognized masking flag from s,u,v to c,w,s since the mask
454        to use (maskC,W,S) depends on position on model grid and has little to
455        do with scalar/vector difference; fix masking if using P-coordinates.
456      - fix masking of wind-stress (was wrong if interpolated or read on A-grid)
457        and update results of exp. global_with_exf (x2).
458      - fix setting of zenith-angle table when SHORTWAVE_HEATING is undef.
459    o pkg/obcs
460      - S/R obcs_calc_stevens: fix a small bug (gammat -> gammas where appropriate)
461    o pkg/exf (interpolation):
462      - assume periodicity in X only if input field cover full longitude range.
463      - improve search for lat. index (supposed to be faster, in ~log2(ny) steps,
464        and should vectorise).
465      - fix input lat of the 2 added row (in case we provide N.pole data).
466    
467    checkpoint63h (2011/12/30)
468    o pkg/seaice:
469      - change declaration of UVM from _RL to _RS in order to get B-grid
470        uIce,vIce monitor when _RS = real*4
471    o pkg/offline:
472      - new S/R OFFLINE_RESET_PARMS for resetting main-model params (switch off flags);
473      - compute vertical velocity if not read from file (switch on exactConserv
474        & staggerTimeStep);
475      - fix output of ptracer monitor iter & time for default PTRACERS_monitorFreq.
476    o verification:
477      - update grid-files (in tutorial_held_suarez_cs/input and fizhi-cs-32x32x40/input)
478        with grid-angle generated using "utils/matlab/cs_grid/cubeCalcAngle.m":
479        fix Pb in yG definition @ 2 missing corners (previously yG was averaged);
480      - update output of exp. global_ocean.cs32x15.viscA4 after changing
481        grid-file angles (used here for coriolis-3d);
482      - remove (or gzip) few files not needed to run fizhi-cs experiments.
483    o pkg/exf (vector interpolation):
484      - rotate vector component toward local grid-axis orientation using grid-angles
485        (stored in GRID.h) instead of locally computed rotation angle; keep old code
486        available with exf option EXF_USE_OLD_VEC_ROTATION (undef by default).
487    o pkg/seaice:
488      - allow to compile with exf options ALLOW_ATM_TEMP or ALLOW_DOWNWARD_RADIATION
489        undefined. Fix and remove the stop when ALLOW_RUNOFF is undefined.
490    o pkg/PKG_OPTIONS.h files:
491      - move #include "CPP_OPTIONS.h" just after #include "PACKAGES_CONFIG.h",
492        outside of the #ifdef ALLOW_THISPKG / #endif block.
493      - update verification/*/code/PKG_OPTIONS.h files.
494    o add a verification experiment (offline_exf_seaice/input.seaice) that test
495      the B-grid LSOR solver
496    o pkg/seaice: sort out emissivity and long wave radiation step 2:
497      - add emissivity for snow and ice as new run-time parameters
498        (unfortunately) that default to the corresponding exf values; this
499        changes results in most verification experiments so that for backward
500        compatibility these parameter have to be set explicitly to inconsistent
501        values (ugly);
502      - the exf-flag EXF_LWDOWN_WITH_EMISSIVITY then gets rid off the hard-wired
503        emissivities of 0.97 associated with lwdownloc in S/R seaice_solve4temp
504        until we agree how to handle this bug properly
505    o pkg/exf (interpolation):
506      - add a set of run-time param ({inputfield}_interpMethod), one for
507        each interpolated input field, to select the interpolation method
508        with a value of zero switching off the interpolation;
509      - print interpolation parameters to standard output;
510      - refine exf_check.F accordingly ; stop if USE_NO_INTERP_RUNOFF is defined
511        (to use instead runoff_interpMethod=0 in data.exf).
512      - simplify default setting of interpolation parameters (for all fields,
513        set position to match model grid cell-center position, leading to trivial
514        interpolation in case of regular Lat-Lon grid) and fix for the case of
515        non-uniform delY.
516    o pkg/exf/exf_radiation.F: add the factor ocean_emissivity to lwdown, for
517       within #ifdef EXF_LWDOWN_WITH_EMISSIVITY/#endif. Unless ocean_emissivity=1.
518       this factor is absolutely required, because the lw exitance (= out-going
519       long wave radiation) is emissivity*stefanBoltzmann*T^4 + rho*lwdown,
520       where the reflectivity rho = 1-emissivity for conservation reasons. Once
521       this is established, we can remove the CPP-Flag (if we want to).
522    o pkg/seaice:
523      - qualify a stop statement in S/R seaice_check: EXF_READ_EVAP and
524        ALLOW_BULKFORMULAE are only required if SEAICE_EXTERNAL_FLUXES is defined
525      - sort out emissivity and long wave radiation, step 1: make SEAICE_emissivity
526        what the name implies (and not emissivity*BoltzmannConstant), this means
527        the old default value of 5.5e-8 now means
528        5.5e-8/5.670e-8 = 0.97001763668430343479 as ocean_emissivity in
529        S/R exf_readparms
530      - FV-discretization of the B-grid LSOR solver, turn on with
531        SEAICE_LSRBNEW. This new solver also involves a slight re-organization
532        of the calling routine dynsolver, so that B and C-grid code look a
533        little more alike.
534      - fix index bugs in ostres.F (B-grid code)
535    o pkg/seaice/seaice_ocean_budget.F: change (unused) code to make it look better
536    o pkg/seaice/seaice_readparms.F: make ocean_emissivity*stefanBoltzmann the
537      default for SEAICE_emissivity, if useEXF; requires setting a wrong
538      parameter value in global_ocean.cs32x15/input.seaice/data.seaice for
539      backward compatiblity
540    o model/src: use sigmaR in calc_ivdc
541    
542    checkpoint63g (2011/12/16)
543    o pkg/seaice/seaice_growth.F:
544      fix heat conservation of the coupled ocean-seaice system.
545      when SEAICE_HEAT_CONSERV_FIX is defined, the mismatch of
546      solid vs liquid water treatment is resolved via QNET.
547    o pkg/seaice/seaice_growth.F:
548      add missing term for sublimation in saltFlux, which was breaking conservation.
549    o pkg/seaice/seaice_model.F:
550      Remove this patholigical case treatment in evolution branch,
551      where it is un-necessary and breaks conservation.
552      Update global_ocean.cs32x15/results accordingly for
553      output.seaice.txt output_adm.seaice.txt and output_adm.seaice_dynmix.txt
554    o model/src:
555      useRealFreshWaterFlux: remove masking of EmPmP (using maskInC) in
556      external_forcing_surf.F and apply mask directly in S/R SOLVE_FOR_PRESSURE.
557    o pkg/obcs:
558      modify Stevens boundary conditions so that S/R obcs_calc_stevens computes
559      tendency for temperature and salinity that is then applied to update
560      theta and salt in S/R obcs_apply_ts; this requires proper masking of all
561      horizontal advection and diffusion contributions on the boundary (in
562      S/Rs gad_advection, gad_calc_rhs, gmredi_rtransport, gmredi_calc_diff), and
563      removing the mask in S/R timestep_tracer. The advantage of this approach is
564      that the updated tracer values include contributions from the surface
565      forcing and vertical diffusion.
566      This modification changes exp4.stevens because of vertical diffusion.
567    o model/src:
568      change non-curvilinear grid setting to also work with exch2 + blank tiles:
569      - move delX,delY to new header file (SET_GRID.h) and adjust length to 1rst
570        face dimensions.
571      - new S/R INI_LOCAL_GRID to define model tile-local grid (using same units
572        as delX,delY) and called from S/R INI_CARTESIAN_GRID, INI_CYLINDER_GRID
573        and INI_SPHERICAL_POLAR_GRID.
574      change test-experiment global_ocean.90x40x15:
575      - split the domain in many more tiles (9x4 tiles of 10x10 each);
576      - switch to exch2 and remove 1 blank-tile (but only for MPI test).
577      - update results of both test (std & dwnslp).
578    o pkg/diagnostics/diagstat_calc.F: fix problem with non-initialised halos in
579       tmp-fields for TARGET_NEC_SX at the cost of extra loops and less vectorisation
580    o model/src:
581      - take sigma-coords related code out of update_etah.F into new S/R UPDATE_ETAWS
582        and fix initialisation when using sigma-coords.
583    o model/src:
584     - improve Gael's changes from Jan 14, 2011 "addition of an 'update' of hfacc etc.
585       to their current value at the beginning of forward_step.F": add a new run-time
586       switch "doResetHFactors" (default=false) and use it to do (or not) the resetting.
587     - set doResetHFactors=T in the following test exp:
588        global_ocean.90x40x15/input (rStar) & input.dwnslp (linFS),
589        global_ocean.cs32x15/input.seaice (rStar), hs94.cs-32x32x5/input.impIGW (linFS)
590        and tutorial_global_oce_in_p (nonLinFS in p)
591    o pkg/ecco
592      - added IES cost term
593    o verification/advect_xz
594      - scale down the depth by 1/100 (from 200 km to just 2.km)
595      - add secondary test using divergent flow, r-star and implicit vertical advection.
596      - add note (check_conserve_TS.txt) and matlab script to check global
597        conservation of T & S with NonLin-FreeSurf and Adams-Bashforth.
598    o pkg/rbcs:
599      - add missing relaxUFile & relaxVFile in namelist (in rbcs_readparms.F).
600    o pkg/obcs (Stevens BCs):
601      - fix various problems in the phase speed computations of the Stevens
602        boundary conditions:
603        - sign error for western and southern boundaries,
604        - time tendencies were underestimated by factor of dTracerLev and some just
605          zero (for multidim advection schemes) -> now estimate time tendencies
606          from difference between previous (n) time level and the one before (n-1);
607          this requires storing a field per tracer per boundary, also in the pickup
608          files.
609        - replace deltaTmom in cflMer/Zon computation with dTracerLev
610        - set default phase velocity to cflMer/Zon
611      - update verification experiment exp4.stevens
612    o pkg/generic_advdiff (implicit_r):
613      - fix implicit vertical advection conservation with AB and/or NonLin-FreeSurf
614        (remove Tr*d/dz(w) in gad_implicit_r.F and add it in gad_calc_rhs.F);
615      - fix implicit vertical diffusion or advection with NonLin FreeSurf
616        (was using current recip_hFacC instead of future recip_hFacC): set future
617        recip_hFac in thermodynamics.F and pass & use it in all vertical implicit
618        solver S/R ;
619      - fill diagnostics of vertical advective fluxes (computed from tendency)
620        when using implicit vert. advection;
621      - update output of exp that uses NonLin-FreeSurf & implicit vertical diffusion:
622         global_ocean.90x40x15 (fwd+AD), global_ocean.cs32x15 (4 fwd +4 AD),
623         tutorial_global_oce_in_p (fwd), tutorial_tracer_adjsens (AD)
624         and cpl_aim+ocn (used in ocean); to be fixed: bottom_ctrl_5x5.
625    o pkg/diagnostics:
626      - add diags for T & S tendency which goes through Adams-Bashforth.
627    
628    checkpoint63f (2011/11/30)
629    o pkg/obcs/obcs_calc_stevens.F:
630      - join some loops to reduce number of if-statements
631      - fix a bug in code for northern and southern boundaries.
632    o pkg/seaice/seaice_init_varia.F
633      - undo resetting UVM=0 that has slipped in unnoticed in r1.49 and
634        caused zero ice-velocities for the B-grid code
635    o pkg/seaice/seaice_init_fixed.F
636      - fix a bug in the initialisation of the second metric terms
637        k2AtC and k2AtZ: k2AtC was set to the value of k2AtZ and k2AtZ was 0.
638      - this affects all seaice configurations with useCurviLinearGrid = .true.
639        and SEAICEuseDynamics = .true. (default) and SEAICEuseMetricTerms
640        = .true. (default)
641      - the only verification experiment affected is global_ocean.cs32x15:
642        icedyn, seaice, and seaice_dynmix (AD)
643    o pkg/thsice/thsice_diagnostics_state.F
644      - only for TARGET_NEC_SX: initialise all of tmpFld, so that overlap does
645        not contain garbage that can lead to surprises in diagstats_calc.F
646    o model/src:
647      - move bi,bj loops inside INTEGR_CONTINUITY ;
648      - call INTEGR_CONTINUITY directly from forward_step.F
649        (previously called from momentum_correction_step.F)
650      - call UPDATE_ETAH from integr_continuity.F and update initialise_varia.F,
651        forward_step.F and pkg/ecco/the_main_loop.F
652    o model/src/do_oceanic_phys.F:
653      - reset addMass to zero only if useICEFRONT ;
654      - separated k-loop for rhoInSitu calculation ;
655      - add 2 diagnostics for wVel*delta^k(Rho) at constant pressure (= WdRHO_P)
656        and at constant T,S (= WdRHOdP);
657      NOTE: change diagnostics WRHOMASS : this is now simply the Vertical transport
658        of In-Situ Density (Anomaly) (=wVel*rho^bar-k) (previously was Vertical
659        transport of locally-referenced potential density);
660        to recover old diag: (WRHOMASS)_old = (WRHOMASS)_new -1/2 * (WdRHOdP)
661    o gluemnc:
662      - replace ncrcat with ncks when adding variables to *.glob.nc
663      - change the way variables without record dimensions are handled so that
664        files that have variables with and without record variables can be glued:
665        add a record dimension with a new unique name to be able to differentiate
666        between variable with and without a-prior record dimensions. Remove
667        this record dimension before adding the variable to the *.glob.nc file.
668        This procedure automatically works also for grid.*.nc files that do not
669        have any record dimension.
670    o verification/cpl_aim+ocn:
671      - generate new reference output on baudelaire (gfortran, mpich2) (previously
672        from old aces-grid cluster, ao + ifort) and update 'run_cpl_test' script.
673    o pkg/obcs/obcs_calc_stevens.F:
674      - add code for northern and southern boundaries.
675      - reorder some loops to save some operations and so that drFBar can be scalar
676    o model/src:
677      - re-arrange extrapolation calculation in Adams-Bashforth S/R (affects machine
678        truncation) and add diagnostics for Adams-Bashforth tendency increment.
679      - update test-exp. AD output:
680        1D_ocean_ice_column, bottom_ctrl_5x5, lab_sea.noseaicedyn, obcs_ctrl;
681      and FWD output: exp4 (x3), fizhi-cs-32x32x40, fizhi-cs-aqualev20,
682        front_relax (x3), global_ocean.90x40x15 (x2), global_ocean.cs32x15 (x5),
683        global_ocean_ebm, ideal_2D_oce, internal_wave, isomip (x3), lab_sea (x4),
684        matrix_example, MLAdjust (x5), natl_box (x2), tutorial_advection_in_gyre,
685        tutorial_global_oce_in_p, tutorial_global_oce_latlon and
686        tutorial_plume_on_slope.
687    o pkg/diagnostics/diagstats_calc.F: add special code for TARGET_NEC_SX
688      that vectorises. This code uses 3 extra 2D fields, F90 array assignments
689      and F90 intrinsic routines SUM, MINVAL, MAXVAL, but since TARGET_NEC_SX
690      does not even come with an F77 compiler anymore, this should not be
691      a limitation
692    
693    checkpoint63e (2011/11/06)
694    o pkg/seaice adjoint of LSR:
695      - substantially rework STORE dirs.
696      - add new flag SEAICE_LSR_ADJOINT_ITER and parameter SOLV_MAX_FIXED
697        this flag will do SOLV_MAX_ITERS but only store SOLV_MAX_FIXED fields
698        and only perform SOLV_MAX_FIXED adjoint iters.
699        If flag SEAICE_LSR_ADJOINT_ITER is undef-ined, the store in the iteration
700        always goes to same record, meaning that the last forward field will be
701        the one used in the adjoint - an approximation.
702      - now produces non-zero LSR-related gradients, and acceptable gradients for
703        An's zonal (x-z) test case (to be checked in)
704      - lab_sea: produces acceptable gradients for lab_sea with forward/backward LSR
705        (but these are screwed up by the thermodynamics in the first place);
706        reduce from 4 to 3 timesteps to avoid t.d. issue as temporary solution;
707        output_adm.txt also reflects changes to seaice_lsr
708      - global_ocean.cs32x15:
709        * the "default" input_ad.seaice has been re-defined to always exclude dynamics
710          (output_adm.seaice.txt was updated)
711        * new input_ad.seaice_dynmix tests a forward LSR / backward free-drift
712          (output_adm.seaice_dynmix.txt)
713    o test-exp. exp4+stevens:
714      - switch off pTracers and nonHydrostatic (restart problems with NH); update output
715    o pkg/seaice (lsr solver):
716      - put coriolis term into FORCEX,Y (as in seaice_evp.F; previously in rhsU,V only);
717        update output (change truncation) of FWD test exp lab_sea & global_ocean.cs32x15
718      - fix SEAICEuseFREEDRIFT for new OBCS version (ndef OBCS_UVICE_OLD)
719      - new parameter "LSR_mixIniGuess" allows (if=2,4) to mix free-drift solution
720        into initial guess for linearised solver; use weight ~ (1/err)^2,4.
721      - compute (with new S/R) and print initial (+ free-driff sol. if available)
722        and final residual of linearised system.
723    o pkg/pp81: add diagnostics for vertical eddy viscosity and diffusivity
724      (requires new subroutines pp81_init_fixed.F/pp81_diagnostics_init.F)
725    o pkg/obcs: Stevens BCs (still only for east and west)
726      - fix Stevens BCs by using intermediate velocities of previous
727        time step as "baroclinic" contribution rather velocity of one grid cell
728        inside the boundaries; more consistent but makes the entire treatment
729        more complicated, requires new pickup files and two new S/Rs:
730        obcs_copy_uv_n and obcs_save_uv_n
731        keep old version with flag OBCS_STEVENS_USE_INTERIOR_VELOCITY
732        (undefined by default)
733      - silently move computation of some grid factors into separate loops to
734        save some recomputations
735      - add a hack for non-linear free surface
736      - add a verification experiment to exp4 that tests this code
737    o make gluemnc/xplodemnc work with (moron) non-GNU shell tools
738    
739    checkpoint63d (2011/10/25)
740    o pkg/obcs + seaice-dynamics:
741      - new implementation calls OBCS_APPLY_UVICE (in seaice_dynsolver.F) before
742        solving for uIce,vIce and prevent SEAICE_LSR or SEAICE_EVP to modify OB
743        values (consistent with an implicit method).
744      - add option OBCS_UVICE_OLD (in OBCS_OPTIONS.h, defined by default) to
745        return to older implementation (same results as before); note that none of
746        the "experimental" OBCS_SEAICE options are implemented in the new version.
747      - switch test exp. seaice_obcs to use new version (update output).
748    o pkg/seaice:
749      - add few stop (B-grid & CS-exch, B-grid & obcs, AUTODIFF & SEAICE_maskRHS)
750      - add parenthesis in Water-Ice drag calculations (evp & lsr);
751      - in seaice_lsr.F, simplify and fix AA3 setting in case sNx or sNy=1;
752        and fix case SEAICE_waterDrag=0 (but unstable if no or little seaice)
753      - update output of test exp lab_sea that uses evp or lsr (fwd+ad)
754        and global_ocean.cs32x15 (icedyn & seaice fwd+ad).
755    o pkg/layers:
756      - Include potential density as new coordinate (Thanks to David Munday)
757    o pkg/dic:
758      - Remove subroutine CALC_PCO2_APPROX_CO3 from carbon_chem.F and add
759        carbonate computation/output to CALC_PCO2_APPROX
760    o pkg/generic_advdiff
761      - make TAF generate code that vectorizes:
762        gad_dst3fl_adv_*.F, gad_u3c4_impl_r.F
763    o model/src:
764      - improve vectorization also for adjoint code of
765        solve_tridiagonal and solve_pentadiagonal. As this requires up to
766        5 new 3D-fields, this code is only turned on for the combination of
767        ALLOW_AUTODIFF_TAMC and TARGET_NEC_SX. Also remove error message
768        for singular matrix check (only for TARGET_NEC_SX).
769      - remove hard-wiring of CPP-flag ALLOW_SOLVERS_KLOOPINSIDE to
770        ALLOW_AUTODIFF. This flag now needs to be set outside of
771        solve_tri/pentadiagonal.F
772    o pkg/exf:
773      - fix previous modif in exf_readparms.F (revision 1.66: treatment of
774        optional namelist EXF_NML_OBCS).
775      - add many debug-print (to trace down where pkg/cal error msg comes from)
776    o pkg/mom_vecinv/mom_vi_hdissip.F
777      - rearrange loops so that vectorization is improved and in particular
778        the adjoint routine vectorizes. The code is a little longer now, but I
779        think easier to read.
780        Note: CPP-flag MOM_VI_ORIGINAL_VISCA4 is not tested.
781    o pkg/seaice:
782      - allow to specify initial seaice velocity from files (uIceFile,vIceFile)
783    o pkg/exch2:
784      - alternative code (without tile x tile matrix) for cumulated (global) sum;
785        used as default; keep using matrix version in adjustment.cs-32x32x1.
786    o tools/build_options:
787      - after merging some MPI and/or multi-threads specific optfiles so that
788        the modified default optfile support both built (using genmake2 -mpi
789        for the MPI built, using genmake2 -omp for OpenMP built),
790        move now obsolete optfiles to tools/build_options/unsupported/
791       (add copy of email sent to support list in doc/optfiles_changes.txt)
792    
793    checkpoint63c (2011/09/28)
794    o pkg/ebm:
795      - fix ebm_zonalmean.F for several procs in Ydir (nPy > 1); update output of
796        test exp. global_ocean_ebm (affects machine truncation, 12 digits for cg2d)
797    o pkg/seaice (SItracer pickup)
798    * Simple code for pickup of SItracer fields (#define ALLOW_SITRACER)
799      To be done:
800      - thorough testing of missing fields in S/R seaice_read_pickup
801      - thorough matching between generic tracers and specific fields used
802        (e.g. volume-weighted age, area-weighted age, salinity, ...)
803    o pkg/grdchk:
804      - all procs calculate and print finite-difference gradient (for testreport)
805      - change description output used by testreport;
806      - AD testing: also compare and report Finite-difference gradient;
807        => update all output_adm*.txt
808    o test exp. global_ocean_ebm:
809      - switch back useRealFreshWaterFlux (no problem anymore with run-off);
810        and turn on exactConserve; update (fwd) output.
811    o pkg/seaice (LSR):
812      - print to STDOUT number of solver iterations at SEAICE_monFreq interval.
813      - modify solver to deal cleanly with u/v switch at face edges (CS-grid):
814        * identical results with non-CS topology (but save up to half of EXCH calls)
815        * no much changes in cs-32 verification tests since no ice at face edges
816         (differences due to convergence criteria, since nb of iterations changed)
817        * expect some differences on lat-lon-cap grid.
818        update FWD results of global_ocean.cs32x15 test exp. (icedyn & seaice)
819    o pkg/exch2:
820      - add new CPP option to disable Cumul-Sum matrix (to save storage when using
821        many tiles); until alternative coding is added, just add a stop.
822    o pkg/kpp:
823      - move ptracer/salt correction to KPP diffusivity from calc_3d_diffusivity.F
824        to S/R KPP_CALC_DIFF_PTR (+ add tracer-index to argument list).
825    o optfiles:
826      - merged few MPI specific (*+mpi*) and multi-threads specific (*+mth) optfiles
827        into corresponding standard one, which now support different build:
828        (when using "genmake2 -mpi" for MPI built, "genmake2 -omp" for OpenMP built)
829      - add "darwin_amd64_gfortran" optfile (initially from Constantinos, tested by Gael)
830    o pkg/obcs (seaice):
831      - add missing EXCH for uIce,vIce after applying OBCS;
832      - remove S/R EXF_SWAPFFIELDS_X/Y , disable S/R EXF_SET_OBCS_X/Y by adding
833        argument = number of levels to S/R EXF_SWAPFFIELDS_XZ/YZ and S/R
834        EXF_SET_OBCS_XZ/YZ ; update obcs_exf_load.F;
835      - fix EXF_SET_OBCS_XZ/YZ for multi-threaded (assuming loaded arrays are shared)
836      - verification exp. seaice_obcs: split domain in 2 tiles ; add SIZE.h_mpi
837        and eedata.mth for MPI and mutlti-threaded testing.
838    o pkg/flt:
839      - make FLT EXCH working with multi-threads (and MPI + multi-threads);
840      - use buffer for floats IO (trajectories & profiles); size set in FLT_SIZE.h;
841      - fix pickup and trajectories + profiles output with multi-threads;
842      - add parameter to select group of fields to write along trajectory and
843        profile (default unchanged);
844      - only call PORT_RAND* function when flt_noise <> 0;
845      - add multi-threaded test for verification exp. flt_example.
846    o eesupp/src:
847      - fix S/R ALL_PROC_DIE for MPI+multi-threads.
848      - USE_OMP_THREADING: check that number of threads (from eedata) matches
849        actual number (from env.var. setting).
850    o pkg/ebm:
851      - fix multi-threading in ebm_area_t.F ; clean-up EBM.h header file.
852      - add multi-threaded test for verification exp. global_ocean_ebm
853    
854    checkpoint63b (2011/08/29)
855    o pkg/ebm:
856      - fix sign of runoff;
857      - update directly forcing fields (Qnet,EmPmR) to use standard
858        external_forcing_surf.F (remove ebm_forcing_surf.F);
859      - avoid loading forcing fields a 2nd time (1rst time from ini_forcing.F);
860      - set either tauThetaClimRelax (in data) or tauThetaZonRelax (in data.ebm)
861        and apply relaxation towards corresponding SST field (2-D map or ZonAver).
862      - update global_ocean_ebm parameters file data and update output (fwd+ad).
863    o verification/matrix_example:
864      - split domain in 8 tiles (2x4); add SIZE.h_mpi and eedata.mth for
865        MPI and mutlti-threaded testing.
866    o pkg/matrix:
867      - change name of S/R MATRIX_INIT to S/R MATRIX_INIT_VARIA ;
868      - fix for multi-tiles (add bi,bj indices to exp/impMatrixCounter);
869      - fix for multi-threaded (remove DATA statement);
870      - use standard DIFFERENT_MULTIPLE function;
871      - add MATRIX_OPTIONS.h
872    o verification/matrix_example:
873       To allow to split the domain in several tiles, change the domain size
874        from 31x31 to 32x32 by adding 1 row (on Southern side) + 1 column (on
875        Western side) of land points.
876    o (*_)write_pickup:
877      - fix few bugs in mypackage_read/write_pickup.F
878      - in MDS_WR_METAFILES calls, replace "myTime" by a local copy into
879        array of length 1 (was caught by compiler syntax-check).
880    o pkg/diagnostics (velocity potential solver):
881      - fix initialisation of main diagonal matrix (for overlap values)
882    o tools/build_options:
883      - towards single optfile for MPI and non-MPI built: merge few +mpi optfile
884        into previously non MPI one (linux_am64 pgf77,open64,pathf90,ifort11)
885      - linux_amd64_gfortran: merge +mpi_generic version into standard optfile:
886        * move IEEE flags to DEVEL section; take IEEE flags from +mpi_generic ;
887        * FAST case: for now, keep -O3 with ini_masks_etc.F in NOOPTFILES list;
888        and use "-devel" testreport option for standard testing on baudelaire.
889    o pkg/grdchk:
890      - Assume that all gradient-check position are within the same tile
891        corresponding to global indices (iGloTile,jGloTile) and that
892        positions (i,j indices or nbeg) are local to this tile;
893      - set tile local-indices and proc. number according to tile global-indices;
894      - remove grdchkwhichproc from namelist (retired param);
895      - send adjoint gradient to all procs so that all procs print it to STDOUT;
896      - switch on MPI test for global_ocean.90x40x15 AD test experiment.
897    o adding package bbl (Bottom Boundary Layer)
898      description in MITgcm/pkg/bbl/bbl_description.tex
899      example/test experiment in MITgcm_contrib/bbl
900    o adjoint verifications
901      - changed 5 experiments to multi-tiles
902        * global_ocean.90x40x15
903        * obcs_ctrl
904        * offline_exf_seaice
905        * tutorial_dic_adjoffline
906        * tutorial_tracer_adjsens
907        changed reference output for those that crossed tile boundaries
908        (changed choices of gradient check positions)
909      - with same tiling, switch on MPI test for the last 4 (add SIZE.h_mpi)
910      - temporary bug fix in grdchk_loc.F for obcs
911    o genmake2 & testreport
912      - add target "obj" (just for OBJFILES files) to Makefile;
913      - add option to specify FEXTRAFLAGS on command line.
914    o pkg/mypackage:
915      - remove bi,bj arguments from argument list of S/R MYPACKAGE_CALC_RHS
916    
917    checkpoint63a (2011/08/02)
918    o pkg/diagnostics (velocity potential):
919      - fix velocity-potential calculation when using OBCS: balance net inflow
920        at each level (new S/R OBCS_DIAG_BALANCE).
921      - fix some of the problems with OBCS in stream-function calculation.
922    o pkg/exf/exf_readparms.F
923      - make treatment of optional namelists (EXF_NML_04, EXF_NML_SGRUNOFF,
924        EXF_NML_OBCS) more consistent, so that you need not have these lists
925        in data.exf when they are not used.
926    o optim/optim_readdata.F:
927      - add some output about obcs variables that might help debugging
928      - add a check about nvarlength
929    o pkg/ctrl: once again, fix computation of endrec in s/r ctrl_init_rec
930    o pkg/diagnostics (velocity potential):
931      - fix mask for OBCS (still problems in stream-function with OBCS);
932      - add specific parameter (default = main code CG2D params) for solver;
933      - in case of poor convergence, use solution corresponding to lowest residual.
934    o pkg/seaice/seaice_growth.F: small changes that permit vectorizable
935      adjoint code. In general statements like tmpscal=fld(i,j) are problematic
936      and should be avoided where possible.
937    o model/src (rStar):
938      - include r* effect on reference-state (PhiRef) in totPhiHyd
939        (so that it's really the potential anomaly at the cell center);
940        affect solution only if z* with full pressure in EOS.
941      - test-exp global_ocean.90x40x15: reduce viscA4 (was not stable) and
942        update output (because of z* in totPhiHyd and viscA4 changes);
943      - keep the previous diagnostics as "PHIHYDcR" (closer to potential anomaly
944        @ constant r) until interpolation at constant r is implemented.
945    o pkg/diagnostics
946      - fix RCENTER diagnostics in case cell center is not at interface middle
947    o add code for TEOS-10 (www.teos-10.org, McDougall et al. 2011). Use
948      this eos with eosType = 'TEOS10', in data (PARM01). This eos implies
949      that THETA and SALT are "conservative temperature" and "absolute
950      salinity"
951    o pkg/ctrl
952      - fix computation of endrec in s/r ctrl_init_rec
953      - ctrl_pack/unpack_*: remove unused variables and some obsolete code
954    o pkg/seaice/seaice_growth.F
955      - fix recomputation with FENTY_AREA_EXPANSION_CONTRACTION code,
956        remove then obsolete STORE directives
957      - fix STORE directives for tice and tices, so that only the
958        appropriate part of the fields are stored (and not the entire
959        field); update global_ocean.cs32x15.seaice AD output.
960      - cosmetic changes: adjust CPP flags and indentation for better
961        legibilty
962    o pkg/autodiff: add mnc-output of adBottomDragFld (code contributed by
963      Chris Wilson)
964    o pkg/gmredi:
965       Add Sub-Meso Eddies parameterisation from Baylor (for now, disabled with TAF),
966       and test it in verification exp. "front_relax.bvp" (update output.bvp.txt)
967    
968    checkpoint63  (2011/07/11)
969    o pkg/exch2:
970     - rename+move: nTiles in W2_EXCH2_PARAMS.h --> exch2_nTiles in W2_EXCH2_TOPOLOGY.h
971     - exch2 version of Cumul-Sum routine: S/R W2_SET_MAP_CUMSUM set up the
972       (2*nTiles)x(nTiles) Cumul-Sum matrix and Master Proc collects all tiles X,Y
973       increments, calculates Cumul-Sum @ tile origin and sends results to each tile.
974    o pkg/diagnostics:
975     - deal with pairs of post-processed diags which are computed together; in
976       particular, re-order list of diags within 1 file to save 2nd computation.
977     - add S/R to compute velocity stream-function (called after velocity-potential
978       calculation) from divergence free transport -> new diagnostics "PsiVEL".
979     - add parameter to select grid-point location where PsiVEL == 0.
980    o eesupp/src:
981       new S/R to calculate cumulated sum on tiled array, corner grid-cell location
982       (specific S/R needed with exch2 topology - for now, just print an error msg)
983    o pkg/shelfice
984     - Implement friction velocity-dependent transfer coefficients following
985       Holland and Jenkins, JPO, 1999
986       Original code by M. Losch with small modifs.
987       Enable with CPP option SHI_ALLOW_GAMMAFRICT
988       and runtime flag SHELFICEuseGammaFrict
989    o verification lab_sea & global_ocean.cs32x15:
990     - use tools/xmakedepend (instead of cyrus_makedepend, in genmake_local):
991       does not miss some dependencies (but is slower) and also works with many files
992       (default makedepend limitation for AD built).
993     - use cyrus_makedepend in adjustment.128x64x1 (so that it still tested).
994    o pkg/diagnostics:
995     - add run-time parameter "useMissingValue" (def=False) to fill land-point
996        (i.e., where mask=0) with MissingValue ; used only in MNC output file.
997       This replaces CPP-option DIAGNOSTICS_MISSING_VALUE.
998     - Extend the use of "missing_value" setting from data.diagnostics for the case
999       of counter-diagnostics (where fraction-weight is zero). This applies both to
1000       MNC and MDS output files.
1001    o pkg/seaice/seaice_growth.F:
1002      - add 'a priori' cap of latent heat flux based on actual mass considerations
1003        when SEAICE_ADD_SUBLIMATION_TO_FWBUDGET is used in conjunction with the
1004        non-legacy seaice_solve4temp.
1005      - add diagnostic of the residual sublimation freshwater flux (the freshwater
1006        flux taken from the ocean if the total actual latent heat fluxes exceed
1007        the maximum)
1008      - remove the CPP switch around the *_FWbySublim unit change and move diagnostic
1009       fill for SIatmQnt, SIfwSubl, SIatmFW to the end of seaice_growth.F.
1010      - add diagnostic of the actual sublimation freshwater flux (that is 0. ifndef
1011       SEAICE_ADD_SUBLIMATION_TO_FWBUDGET) and of the latent heat flux (evap+sublim).
1012      - bug fix : frWtrAtm needs a_FWbySublim ifdef SEAICE_ADD_SUBLIMATION_TO_FWBUDGET.
1013      - bug fix : missing part to Martin's r_FWbySublim pathological case fix.
1014    o verification 1D_ocean_ice_column:
1015       made model domain truly 1x1x23 instead of 5x5x23 with only center cell (3,3,:) wet
1016       update results
1017    o pkg/diagnostics:
1018     - Implement setting of "Post-Processed" diagnostics (corresponding to gdiag(5)='P')
1019       which are not filled-up but computed from other diags ; In this case, the mate
1020       diag points to the primary (filled-up) diag to used for post processing.
1021     - Update Velocity-potential computation using post-processed diag framework.
1022     ==> Change the ordering of fields and time-periods in MDS output file
1023       when using periodic averaging: now writes one time record with the full set
1024       of fields for this time period, then the next time reccord (it used to be
1025       one field with the full set of time records then the next field).
1026         Note: this is now similar to NetCDF (MNC) output file. <==
1027    
1028    checkpoint62z (2011/06/21)
1029    o adjoint monitor:
1030     - Add adjoint monitor output for packages exf, seaice
1031       and update relevant testreport output
1032    o pkg/seaice:
1033     - re-order diags inits so that they appear in order in available_diagnostics.log
1034     - added diags: hsnow thermo. rates of change, area preceeding ridiging process,
1035       area/heff/hsnow preceeding thermodynamic growth/melt.
1036     - modified diag: SIdA; output actual effect, as the description states.
1037     - modified description: SIqneti, SIqneto, SIuheff, SIvheff, SIdAb*, HSNOW.
1038     - retired redundant diags: SIyneg, SIfice, SIsnwice, SIthdgrh.
1039       (SIyneg->SIdHbOCN; SIfice->SIdHbATC; SIsnwice->SIdHbFLO;
1040        and SIthdgrh->SIdHbOCN+SIdHbATC+SIdHbATO)
1041     - modified diags (2) : switch all SIdA*, SIdH*, SIdS* from delta to rates.
1042     - added diagnostics for seaice generic tracers (SItr*).
1043     - added SItrUnit and SItrNameLong run time param (for SItr* diags).
1044     - in diag names, replaced 'PrTh' abbrev. of 'preceeding thermo' with 'PT'.
1045     I. Fenty: 18-Jun-2011:
1046     Minor changes to seaice package:
1047     1) Retired old variables (A22, SEAICE_lhsublim, areaMax, areaMin, hiceMin) and
1048        added some new ones (SEAICE_area_reg, SEAICE_hice_reg, SEAICE_area_floor)
1049       - Differentiated "regularization variables" from "floor variables"
1050        * areaMin became SEAICE_area_reg (old A22) and SEAICE_area_floor
1051        * hiceMin became SEAICE_hice_reg (old hiceMin)
1052          (with _reg meaning regularization variable)
1053       - SEAICE_lhSublim becomes lhSublim, the sum of SEAICE_lhEvap and SEAICE_lhFusion
1054        so as to ensure energy conservation when going between phases
1055      - A22 was not used anywhere
1056     2) Changed regularization procedure for heffActual and hsnowActual to ensure
1057        well-boundedness and smooth adjoint in seaice_growth.F
1058     3) Fixed a bug where seaice_solve4temp would not recognize ice-free grid cells
1059        because the old regularization always set heffActual >= 0.05 cm
1060     4) Changed the model so that the default behavior is to put a small (10^-5) "floor"
1061        on AREA when HEFF > 0.
1062      - went from requiring ALLOW_PRECLUDE_INFINITESIMAL_AREA to be defined to
1063        requiring that DISABLE_AREA_FLOOR *not* be defined
1064     Affected verifications:
1065      - 1D_ocean_ice_column (output.txt output_adm.txt)
1066      - global_ocean.cs32x15 (output.seaice.txt output_adm.seaice.txt)
1067    o pkg/diagnostics:
1068      - move MNC code from diagnostics_out.F into new diagnostics_mnc_out.F (2 S/R).
1069      - rename S/R GETDIAG to DIAGNOSTICS_GET_DIAG and change type of 1rst argument
1070        (was _RL, now integer) with option = 0 to retrieve all levels.
1071      - add pieces of code to compute velocity potential at each level (new diagnostics
1072        PhiVEL, works only when UVELMASS & VVELMASS are also turned on);
1073        for now, using same params as CG2D (target-resisual, max Nb of iter ...).
1074      - fix few issues with counter diagnostics in diagnostics_setdiag.F &
1075        diagstats_setdiag.F (if diagnostic counter is itself a counter diag)
1076        and in diagnostics_fract_fill.F (do not need a valid pointer for the
1077        diagnostics counter-mate); check that definition of counter-diagnostic
1078        includes a valid counter-mate (in diagnostics_set_levels.F).
1079    o model/src (rStar):
1080      - add rStar scaling factor in diags_phi_hyd.F (similar to calc_grad_phi_hyd.F);
1081        affect solution only if z* with full pressure in EOS;
1082        update output of test-exp global_ocean.90x40x15.
1083    o pkg/seaice:
1084      - introduce siEps=1e-5 parameter
1085      - use areaMax in AREA update (part 4), consistent with ridging step (part 2.5).
1086      - re-organize SEAICE_ADD_SUBLIMATION_TO_FWBUDGET code.
1087      - introduce ALLOW_SITRACER and seaice_tracer_phys.F to handle generic seaice tracer.
1088        For now it covers, and was tested for, ice salinity and age (attached to HEFF),
1089        as well as ice cover age and ridging index (attached to AREA).
1090        For now the run time parameters (in data.seaice/SEAICE_PARM03) are
1091        SItrName (e.g. 'age') and SItrMate ('HEFF', which is the default, or 'AREA').
1092        Up to SItrMaxNum=3 tracers can be used simultaneously.
1093    o pkg/salt_plume:
1094      -introduce SPsalFRAC run time parameter that sets the fraction of the
1095       salt by-product of ice growth (SPsalFRAC*(1-SIsalFRAC)*salt typically)
1096       that gets vertically redistributed (fluxed down) by pkg/salt_plume.
1097    o model debug options:
1098      - Switch reading of debugMode from S/R INI_PARMS (parameter file "data", stored
1099        in PARAMS.h) to S/R EESET_PARMS (parameter file "eedata", stored in EEPARAMS.h).
1100      - Refine debug-msg printing selection (3 new levels):
1101        debugMode  : controls printing of debug messages (sequence of S/R calls).
1102        debugLevel : controls printing of algorithm-relevant auxiliary/debug messages
1103         debLevZero =  0 ; /* level of disabled aux. msg printing */
1104         debLevA =  1 ; /* level of minimum  aux. msg printing */
1105         debLevB =  2 ; /* level of low aux. print (report read-file opening)*/
1106         debLevC =  3 ; /* level of moderate debug prt (most pkgs debug msg) */
1107         debLevD =  4 ; /* level of enhanced debug prt (add DEBUG_STATS prt) */
1108         debLevE =  5 ; /* level of extensive debug printing */
1109        New debugLevel default: with default debugMode value (=F),
1110          = 2 (debLevB) or = 1 (debLevA) in case ALLOW_AUTODIFF is defined.;
1111          and if debugMode=T, default debugLevel = 4 (debLevD).
1112        Relation with previous settings:
1113         debLevB (=2) corresponds to former debLevA (=1)
1114         debLevD (=4) corresponds to former debLevB (=2)
1115        Note:
1116         a) if debugLevel=0, skip WRITE_GRID call when nIter0 > 0 (same as before);
1117         b) default debugLevel=1 is convenient in AD runs (avoid many file opening msgs);
1118            to recover previous default, set debugLevel=2 (e.g. AD-test hs94.1x64x5)
1119      - Add new parameter (printResidualFreq, read from PARM02 namelist) to print
1120        detailed CG solvers convergence; off (=0) by default, except if debugLevel=5.
1121    o pkg/obcs:
1122      - change OBCSfixTopo default from True to False (should not change the results);
1123        keep OBCSfixTopo=T in verification-exp. seaice_obcs.
1124    o pkg/thsice:
1125      - fix bug in thsice_calc_thickn.F (was introduced in version 1.18) in
1126        2nd layer seaice sublimation (unlikely to happen)
1127      - use Interior mask for OBCS in thsice_advection.F (similar to what is
1128        done in gad_advection & seaice_advection).
1129    o adjoint:
1130      bug fix spotted by Gael Forget:
1131      seaice_advection and thsice_advection still had
1132      legacy CPP options to avoid CS corner updates for adjoint
1133    o pkg/seaice:
1134      => Change some of the defaults (2011/05/29):
1135         - change SEAICEuseFluxForm default (from False to True)
1136         - change DIFF1 default (from 0.004 m/s to 0. m/s)
1137         And print warnings if DIFF1 is not set in data.seaice and centered
1138          avection scheme is used without any diffusion.
1139      also:
1140      - fix seaice_diffusion calls in default AdvScheme part of seaice_advdiff.F;
1141      - set SEAICEdiffKh[] default in the same way as SEAICEadvSch[]
1142      - stop if DIFF1<>0 with SEAICEadvScheme <> 2, if DIFF1<>0 with any
1143        other non-zero SEAICEdiffKh[] diffusivity, if SEAICEadvSalt=T with
1144        #undef SEAICE_VARIABLE_SALINITY, if SEAICEadvAge=T with #undef SEAICE_AGE.
1145      update results of test exp.:
1146         lab_sea: output.fd (switch to AdvScheme=33 with diffKh=20)
1147             output.hb87, output_adm.evp (SEAICEuseFluxForm=T and diffKh=200)
1148             output_adm.noseaicedyn (SEAICEuseFluxForm=T)
1149         offline_exf_seaice: output.seaicetd, output_adm (SEAICEuseFluxForm=T)
1150         seaice_obcs: output (SEAICEuseFluxForm=T)
1151      and prescribe old default for SEAICEuseFluxForm (=F) and DIFF1 (=0.004)
1152          for standard fwd & AD lab_sea tests (to keep the same output).
1153    o pkg/seaice/seaice_growth.F:
1154      - use Ian Fenty's capping formulas for actual ice
1155      thickness thoughout EVOLUTION branch.
1156      - put treatment pathological case #2) in CPP brackets
1157      (ALLOW_AVOID_INFINITESIMAL_AREA, undef by default).
1158      - update global_ocean.cs32x15 and 1D_ocean_ice_colum results accordingly.
1159    o pkg/seaice:
1160      - seaice_diffusion.F : remove the min(DX,DY) factor permanently;
1161      pass the Laplacian diffusivity (in m^2/s) diffKh as a parameter;
1162      also pass fac as a param, which can be 1. (to update the tendency
1163      field) or the time step (to update the field itself).
1164      - seaice_advdiff.F: for multidim, call seaice_diffusion with
1165      e.g. SEAICEdiffKhHeff and with fac=1; for single-dim, call
1166      seaice_diffusion with e.g. SEAICEdiffKhHeff and with fac=time step.
1167      - SEAICE_PARAMS.h, seaice_readparms.F, seaice_check.F :
1168      hooks to handle SEAICEdiffKhHeff, SEAICEdiffKhArea, etc.
1169    o pkg/seaice:
1170      diffusion with centered advection scheme (diffus.F & advect.F):
1171      - simplify S/R DIFFUS (put deltaT & DIFF1 factor outside, move EXCH outside)
1172        to just compute the laplacian of input-field.
1173      - unroll k loop (harmonic,biharmonic diff) in advect.F to save 1 exch call.
1174      - fix flux-form version in diffus.F to conserve tracer.
1175      update output of lab_sea.fd & lab_sea.hb87 (1rst set of modif affects
1176       machine truncation) and lab_sea.salt_plume (conservative flux-form modif)
1177    
1178    checkpoint62y (2011/05/26)
1179    o pkg/seaice:
1180     - seaice_growth.F : in EVOLUTION branch, always include
1181       a_QSWbyATM_cover in qnet (as it should be).
1182     - verification/global_ocean.cs32x15 : update results accordingly
1183       (output.seaice.txt output_adm.seaice.txt).
1184    o pkg/seaice + obcs:
1185     - use maskInW & maskInS in multi-dim advection and biharmonic diffusion:
1186       equivalent of assuming no tracer gradient outside the OB region.
1187       update output of seaice_obcs (uses DIFF1 <>0 => biharmonic diffusion)
1188     - remove calls to OBCS_COPY_TRACER after EXCH calls (no longer needed
1189       after changes above);
1190     - obcs+seaice cleaning: apply seaice-tracer OB values to tracer field
1191       only at OB location (instead of over a band of OLx width).
1192    o pkg/seaice:
1193     - fix wrong indices in old (non Flux-Form) diffusion default S/R diffus.F
1194       (dxG(I+1, ...) changed to dxG(I, ...), no impact on Lat-Lon grid)
1195    o pkg/obcs:
1196      - split header file "OBCS.h" into 4 separated files:
1197        OBCS_PARAMS.h, OBCS_GRID.h, OBCS_FIELDS.h & OBCS_SEAICE.h
1198       Note: OBCS_PARAMS.h & OBCS_GRID.h can be included without OBCS_OPTIONS.h
1199         (contain no conditional statement which depends on OBCS options).
1200      - move "useOBCSYearlyFields" from "data.obcs" (hold in OBCS_PARAMS.h)
1201        to parameter file "data.exf", namelist EXF_NML_OBCS (in EXF_PARAM.h).
1202    o ctrl, cost, grdchk & autodiff pkgs:
1203      - make options file more standard (like other {PKG}_OPTIONS.h file but
1204        with AD_CONFIG.h); clean-up some of the included header files.
1205    o pkg/obcs:
1206      - do not mask tracer when applying OB (tracer == 0 could generate problems)
1207      - apply tracer OB values to tracer field only at OB location (instead of
1208        over a band of OLx width)
1209      - clean-up obcs_apply_w.F & obcs_apply_eta.F (since less calls to these S/R)
1210      - remove OBCS_MULTIDIM_OLD_VERSION code in gad_advection.F and remove
1211        obcs_apply_tloc.F & obcs_apply_sloc.F
1212    o obcs in model/src:
1213      - call OBCS_APPLY_W only if NonHydrostatic.
1214      - call OBCS_APPLY_ETA only if NonLinFreeSurf.
1215      - reset dEtaHdt and wVel to zero outside OB interior region ;
1216      - leave tracer unchanged outside OB interior region: This has no effect
1217        on the solution but just to prevent unrealistic tracer value outside OB.
1218      - zero out velocity outside OB interior region: This has no effect on
1219        the solution but just to prevent unrealistic velocity outside OB.
1220    o obcs and non-lin free-surf:
1221       move call to OBCS_APPLY_R_STAR from update_r_star.F to calc_r_star.F
1222       and call to OBCS_APPLY_SURF_DR from update_surf_dr.F to calc_surf_dr.F
1223       + add argument "etaFld" to OBCS_APPLY_R_STAR & OBCS_APPLY_SURF_DR:
1224       this fixes missing EXCH + get consistent eta OB value (+ fix restart).
1225       update results of test-exp. exp4(nlfs).
1226    o exp4 (nlfs) test-exp:
1227       use OBC for Eta at Western & Eastern OB (to test prescribing Eta
1228       with NonLin-FreeSurf); update output.nlfs.txt
1229    o obcs and 2d/3d solver norm:
1230       use interior masks (maskInC) to cancel out cg2d & cg3d matrix coeff at OB
1231       and outside OB interior region (will allow to place OB further inside the
1232       domain). Depending on the domain, can affects cg2d-Norm (previous
1233       cancellation outside OB was only partial), e.g. in exp4 & obcs_ctrl,
1234       and cg3d-Norm (previous Norm was computed before canceling OB terms),
1235       e.g. in tutorial_plume_on_slope.
1236      - update output of exp.: exp4 (x2), obcs_ctrl and tutorial_plume_on_slope.
1237    o pkg rbcs:
1238      - split RBCS.h into 3 files: RBCS_SIZE.h, RBCS_PARAMS.h & RBCS_FIELDS.h
1239      - add capability to apply relaxation to horizontal velocity uVel & vVel.
1240    o pkg/grdchk: add gradient check for control variable xx_shifwflx
1241    o pkg/shelfice/shelfice_init_fixed.F
1242      fix CPP-flag combinations
1243    o pkg/seaice: Merge iceage code of Pierre Rampal
1244      * update/change/correct ice age calculations
1245      * add age updates for pathological cases
1246      Probably needs more testing...
1247    
1248    checkpoint62x (2011/05/13)
1249    o pkg/mom_vecinv:
1250       high-order vorticity scheme: use interior masks (maskInW & S)
1251       to zero-out (outside OB) gradient of vorticity.
1252    o verification exp.:
1253       turn on "useEnergyConservingCoriolis" (better discretisation) in exp.
1254       hs94.128x64x5 and seaice_obcs ; update results.
1255    o pkg/obcs:
1256      fix bug in OBeta for YZ sections in obcs_exf_load.F
1257    o pkg/ctrl, pkg/shelfice, and optim:
1258      - add new control variable xx_shifwflx (fresh water flux underneath ice
1259        shelves). This is almost as tedious as obcs-ctrl, because the
1260        variables needs its own mask.
1261      - add a cost function term that penalizes the deviation of xx_shifwflx
1262        from the first guess (zero) in analogy to other control variables
1263    o pkg/shelfice:
1264      - start basic adjoint
1265    o pkg/ctrl:
1266      - remove extra 2D field "for good measure" when initializing in
1267        ctrl_set_globfld_[xy/xz/yz].F
1268      - replace hard coded precision 32 (a bug) in ctrl_map_ini_gen by ctrlprec
1269      - improve error messages in ctrl_set_unpack_*
1270    o OBC implementation in momentum:
1271       use interior masks (maskInC,W & S) in momentum S/R:
1272       - multiply divergence, tension and some del^i.u or del^j.v by maskInC
1273       - multiply del2u,del2v by maskInW/S (biharmonic viscosity)
1274       - multiply horiz. grad of vorticity by maskInW/S (in Leith scheme)
1275       - multiply gradient of wVel by maskInW/S in del2w calculation (NonHyd)
1276       Motivation: fix/clean implementation of OBC with biharmonic-viscosity
1277        (and also with Leith/Smagorinsky harmonic-viscosity).
1278       Update output of experiment dome and exp4 (+nlfs).
1279    o exp4 test-exp:
1280      - turn on: nonHydrostatic, exactConserv, viscA4 (with momDissip_In_AB=F)
1281        and prescribe time-varying OB (without pkg/exf) for zonal-velocity
1282        at Western & Eastern Boundaries (+/- 1 per-cent); Also prescribe
1283        time-varying OB at Western-side for wVel (NonHyd); update output.
1284      - add secondary set-up (.nlfs) using NonLin FreeSurf (z*) + mom_vecinv
1285        and biharmonic-viscosity ; also use prescribed time varying OB.
1286    o pkg/obcs:
1287      fix bug in OBWeta,OBWeta indices in obcs_apply_r_star.F
1288    o model/src:
1289      - fix startTime setting when baseTime<>0 & nIter0=0 are specified ;
1290      - initialise startTime & nIter0 with unlikely values: allows to set one
1291        from the other without ambiguity.
1292    o seaice_obcs test-exp.:
1293      add small diffK4T,S to test biharmonic diffusivity with OBCS ; update output.
1294    o pkg/obcs:
1295      - remove calls to OBCS_COPY_TRACER after EXCH for T,S & pTracer:
1296        no longer needed with maskInC,W,S in pkg/generic_advdiff.
1297    o pkg/seaice:
1298      - retired SEAICE_SALINITY and SEAICE_salinity in favor of
1299        SEAICE_VARIABLE_SALINITY and SIsalFRAC, respectively.
1300      - fixed bug in the initialization of sea ice salinity variable HSALT
1301        in seaice_init_varia.F  (removed dependence on ICE2WATR)
1302    o fizhi-cs test exp.:
1303       switch reference output convention for these 2 non-standard test-exp,
1304        from: pgi  6.1-5 on faulks (FC.6, -of linux_ia32_pgf77+authors_fc5)
1305          to: ifort 11.1 on baudelaire (FC.13, -of linux_amd64_ifort11)
1306       reason: faulks might get retired soon and pkg/fizhi has still Pb with gfortran
1307    o model/inc:
1308      - change type of PmEpR array (from _RS to _RL) to fix restart (with "-use_r4")
1309        of exp. global_ocean.90x40x15 (Suncronous time-stepping + Real-FW + NonLin-FS)
1310    o pkg/seaice:
1311      - fix calculation of saltFlux and saltPlumeFlux when using SEAICE_SALINITY
1312    o verification/lab_sea, 1D_ocean_ice_column, seaice_obcs, global_ocean.cs32x15
1313      - updated output*.txt files due to bug fixes in salt, saltPlumeFlux,
1314        and initial HSALT
1315    
1316    checkpoint62w (2011/04/26)
1317    o pkg/mom_fluxform:
1318      - fix calculation of del2u & del2v (no-slip BC) when using Non-Lin Free-Surf.
1319      - use parameter "sideDragFactor" in no-slip BC side-drag part.
1320      - update output of exp. global_ocean.90x40x15
1321    o pkg/mom_vecinv:
1322      mask del2u & del2v (no effect on results, but cleaner & closer to mom_fluxform)
1323    o update seaice exp.:
1324      use more consistent parameter values (remove "backward compatability only":
1325       ICE2WATR, SEAICE_lhSublim, SEAICE_cpAir, SEAICE_rhoAir + set rhoConstFresh)
1326      related to thermodynamics seaice. Update output (fwd+AD) of exp.:
1327       1D_ocean_ice_column (x2), lab_sea (x8), ioffline_exf_seaice (x2) & seaice_obcs
1328    o update test-exp global_ocean.90x40x15:
1329      o use default CD_CODE_OPTIONS file (Adams-Bashforth on CD Mom & Coriolis).
1330      o increase Overlap size from 2 to 3 (to allow to test bi-harmonic Visc.)
1331      o new pickup-files from a 100.yr run with pkg/down_slope (input.dwnslp params)
1332      o turn on zStar & viscA4 in standard set-up (dir input/)
1333        and update output files: output.txt & output.dwnslp.txt
1334    o new AD-test experiment: obcs_ctrl
1335      (From Matt MITgcm_Contrib/SOSE/BoxAdj) to test OBCS as control vector.
1336    o pkg/dic:
1337      fix two bugs in handling water vapour pressure in carbonate chemistry
1338      and air-sea fluxes. Found by Val Bennington and Galen McKinley
1339      (add DIC Option = WATERVAP_BUG to recover old results)
1340      update output of tutorial_global_oce_biogeo (fwd+AD) & tutorial_dic_adjoffline
1341    o adding allowInteriorFreezing option to check for water below freezing point
1342      at depth and bring the negative heat anomaly to the surface level
1343    o pkgs _fields_load:
1344      - extend GET_PERIODIC_INTERVAL to deal with non-periodic case (from pkg/rbcs)
1345      - use new S/R GET_PERIODIC_INTERVAL in pkgs:
1346        bulk_force, cheapaml, cfc, dic, obcs (+ ctrl/ctrl_get_gen_rec), offline and
1347        rbcs to get interpolation weights and time reccord number.
1348      - fix multi-threading in aim_fields_load.F
1349      - apply EXCH to temp arrays [0,1] after reading in dic_fields_load.F
1350    o external_fields_load:
1351      new S/R GET_PERIODIC_INTERVAL to calculate which time-record (and linear
1352       interpolation weights) to use in a periodic time-series ; do not divide by
1353       time-step to convert to integer:
1354       - this fixes case where externForcingPeriod is not multiple of time-step
1355          (Thanks to Christopher L. Wolfe)
1356       - this fixes case where externForcingPeriod is an odd multiple of time-step
1357         (was wrong by half of time-step); update results of tutorial_global_oce_in_p.
1358      store index of time-record which is currently loaded:
1359       - works without any assumption on sequence of calls to EXTERNAL_FIELDS_LOAD ;
1360       - needed for the adjoint but not yet used because of extensive recomputations;
1361         (to be fixed soon)
1362    
1363    checkpoint62v (2011/04/02)
1364    o verification/1D_ocean_ice_column added to test Ian Fenty's
1365      pkg/seaice_growth.F modifications for improving sea ice code differentiability
1366    o update output of exp4, internal_wave, seaice_obcs, tutorial_plume_on_slope
1367      (new velocity statistics after changing maskInW & maskInS definition)
1368    o pkg/generic_advdiff with OBCS:
1369      use maksInW & maskInS in advective flux and in biharmonic diffusion calculation:
1370      equivalent to assumption of no tracer gradient outside the OB region.
1371      This will affect the results if using obcs+biharmonic diffusion.
1372      update output_adm.txt of experiment bottom_ctrl_5x5 (not expected since no obc)
1373    o pkg/obcs:
1374      change definition of maskInW & maskInS: leave OB edges inside (maskIn=1)
1375      (e.g., maskInW(OB_Ie)=1 ) so that velocity normal-component at OB is still
1376      in Interior region. No impact on solution but affects Velocity monitor stats.
1377    o pkg/ptracers (adjoint)
1378      New option AUTODIFF_PTRACERS_SPLIT_FILES for writing separate
1379      tape file for each tracer
1380    o model/inc/src and pkg/autodiff: add parameters that allow to turn
1381      of parts of the adjoint code at run time. For now, there are only
1382      useKPPinAdMode, useGMrediInAdMode, and useSEAICEinAdMode. These
1383      parameters are set in data.pkg.
1384      This is the lazy coward's version of doing this, but still useful for
1385      debugging. In order to do it right, everything needs to be moved to
1386      pkg/autodiff.
1387    o pkg/autodiff: fix global_sum_tile_ad.F by resetting adsumPhi at
1388      the end; this fixes the adjoint balancing code for open boundaries.
1389    o pkg/ctrl:
1390      - change behavior of xx_${varname}period to be analogous to exf-conventions:
1391        xx_${varname}period =   0.,  means time-independent control part
1392        xx_${varname}period = -12., means one-year-periodic monthly control part
1393      - introduce helper routine ctrl_init_rec (part of ctrl_init.F) to
1394        clean up ctrl_init a little, remove unused variables
1395      - ctrl_init: fixed the handling of the start/endrec for obcs-variables
1396      - move "call cal_GetMonthsRec" from s/r ctrl_get_gen to s/r ctrl_get_gen_rec
1397    
1398    checkpoint62u (2011/03/15)
1399    o model/src:
1400      - for the adjoint, change NonLin-FreeSurf initialisation sequence: fill-in
1401        h0Fac from INITIALISE_FIXED and reset hFac to h0Fac in INITIALISE_VARIA ;
1402      - in initialise_varia.F (except for ALLOW_DEPTH_CONTROL) remove 2nd call to
1403        INI_DEPTHS, INI_MASKS_ETC & INI_LINEAR_PHISURF.
1404    o pkg/ctrl/obcs/ecco:
1405      - remove obsolete, unused, and partially broken code:
1406        ctrl_obcsvol/ctrl_obcsbal/ctrl_volflux and code within
1407        ALLOW_CTRL_OBCS_BALANCE
1408      - put a stop statement into ecco/cost_obcsvol.F, but also add
1409        cost_obcsvol to ecco_ad_diff.list
1410    o pkg/ecco: fix counting cost function contributions for obcs (code
1411      by Matt M.) and diffkr for diagnostics
1412    o pkg/ecco, pkg/ctrl, pkg/grdchk:
1413      add cost penalty terms for initial uvel, vvel, eta controls
1414      and I/O for prior error files
1415    o pkg/mdsio:
1416       move mds_check4file.F from eesupp/src to mdsio_check4file.F ; add option
1417       (new argument) to check for tiled file in mdsioLocalDir : this fix the
1418       restart from pickup_som , pickup_dic (& dic_co2atm) with mdsioLocalDir.
1419    o pkg/ctrl:
1420     - ctrl_obcsbal.F, ctrl_obcsvol.F: replace last calls of ctrl_getrec by
1421       ctrl_get_gen_rec, put a stop statement into ctrl_getrec. Remove
1422       unused and superfluous variables
1423     - ctrl_get_gen_rec.F: catch the case of xx_genperiod=0.
1424    o pkg/ecco
1425     - enable adjoint of Stevens OB
1426    o pkg/ctrl/ecco/grdchk:
1427      - remove global declaration of tmpfldx/yz and tmpfldx/yz2.
1428        Fortunately, we do not have any tests for the numerous cpp-flagged
1429        option of "obcs as control parameters" so we will never know
1430        if this is an improvement (but at least now things compile).
1431      - remove an obsolete initialization from ecco_cost_init_barfiles.F
1432      - fix some problems within never used ifdefs to make the code compile
1433    o pkg/obcs:
1434     - Refine Interior mask definition to work with more complex OB (e.g.
1435       if OB_Ie < OB_Iw); In case default setting is not sufficient, allows to
1436       read in Interior mask from file. Check if Interior mask is consistent
1437       with OB list of indices.
1438    o pkg/seaice
1439     - beginning code for a seaice tracer package,
1440       but currently only used for seaice age: SEAICE_AGE
1441       SEAICE_num = 4
1442       iTracer = 1: area-weighted ice age
1443               = 2: volume-weighted ice age
1444               = 3, 4: template for one-year vs. multi-year ice
1445       data.seaice has new namelist SEAICE_PARM03 for arrays related to
1446       SEAICE_num
1447    
1448    checkpoint62t (2011/03/05)
1449    o pkg/obcs:
1450     - obcs_apply_uv.F: change to a 2 steps method, first tangential component;
1451       then normal component. This ensures that the normal component is set
1452       correctly even when it conficts with tangential setting from an other OB.
1453       Affects results of test-experiment seaice_obcs: update the output.txt
1454    o pkg/obcs:
1455     - add code to monitor statistics of dynamical fields at OB.
1456     - take OBCS_BALANCE code out of obcs_calc.F into new S/R OBCS_BALANCE_FLOW :
1457       - fix to OBCS_BALANCE code (right hFac ; deal with simple OB intersection).
1458       - change default: balance the Net inflow through all OB (instead of balancing
1459         each OB separately); keep the old method if setting OBC_balanceFacX < 0.
1460     - switch on useOBCSbalance in dome experiment: only correct Western OB outflow
1461       to match Nortern OB inflow (OBCS_balanceFacN=0).
1462    o pkg/seaice:
1463     - redefined actual sea ice age to be ICEAGE/HEFF ifdef SEAICE_AGE_VOL
1464    o pkg/seaice (seaice_growth v 1.113):
1465     - reverting seaice_growth to v 1.111 in order to have code with exact bit
1466       compatibility with MITgcm_contrib/ifenty/Fenty_seaice_thermo_code_merge
1467       CPP option SEAICE_OCN_MELT_ACT_ON_AREA removed in v 1.112 is reintroduced
1468       runtime flag SEAICEareaFormula is kept but is inactive
1469    o model/src:
1470     - add new param to scale curvilinear grid distance and area when using
1471       a different sphere radius from the grid-files.
1472     - test/check multi-threads EXCH applied to local variable (cg2d_x)
1473    o adjoint:
1474     - enable adjoint of Stevens OB
1475     - add dummy_in_dynamics to enable extraction of ADJrhoinsitu
1476       (a bit delicate because of potentially modified adj. common block structure;
1477       current switch is ALLOW_AUTODIFF_MONITOR_DIAG, could be changed later)
1478    
1479    checkpoint62s (2011/02/15)
1480    o pkg/seaice (seaice_growth v 1.112):
1481     - introduce SEAICEareaFormula run time parameter, which selects the recipe for
1482       computing the ice cover tendency from effective thickness tendencies. Include
1483       Ian Fenty's formula.
1484     - remove 'undef SEAICE_OCN_MELT_ACT_ON_AREA' which may now be achieved using
1485       SEAICEareaFormula.
1486     - simplify notations for the various d_HEFF/d_AREA terms.
1487    o pkg/gmredi:
1488     - add Boundary-Value-Problem bolus transport (Ferrari etal, OM 2010) code
1489       from Christopher Wolfe (UCSD); add partial cell factor in vertical derivative;
1490       add a verification test-run (front_relax.bvp) to test GM_useBVP.
1491    o pkg/seaice (seaice_growth v 1.111):
1492     - for SEAICE_DO_OPEN_WATER_GROWTH, replace Gael's implementation with Ian's.
1493     - the new SEAICE_DO_OPEN_WATER_MELT allows open-water air-sea heat fluxes to
1494       also melt ice.
1495    o pkg/seaice:
1496     - McPhee formula for Ice-Ocean fluxes (provided by Ian Fenty).
1497     - can be used by #define MCPHEE_OCEAN_ICE_HEAT_FLUX in SEAICE_OPTIONS.h
1498    o pkg/cheapaml:
1499     - from Nico Wienders: New version of this package.
1500    o pkg/flt:
1501     - add CPP options to prevent floats to re-enter the opposite side of
1502       a periodic domain (default: keep periodicity)
1503    o pkg/gmredi:
1504     - apply exchange to GM_PsiX,GM_PsiY to get valid values near CS-corners
1505       (needed for multi-dim advection).
1506     - switch on GM Advective form in global_ocean.cs32x15 and update output.txt
1507    o model/src:
1508     - fix wrong re-setting of addMass array (ALLOW_ADDFLUID) for atmospheric run.
1509    o tutorial_tracer_adjsens
1510     - extend to NLFS and replace maskC by hFacC
1511       (change reference output accordingly)
1512    
1513    checkpoint62r (2011/01/24)
1514    o testreport:
1515     - add option -deloutp (-do) to remove output file after successful run
1516     - add option -mfile (-mf) for MPI machile-file and for each test-exp,
1517       extract exact list of procs from this file ; adjust COMMAND by
1518       replacing TR_MFILE & TR_NPROC with local machile-file & Nb of MPI procs.
1519    o pkg/ecco: replace old ineffective way of penalizing deviations from
1520      first guess (of obcs) with code by Matt Mazloff
1521    o pkg/ctrl: add code that allows the use of ALLOW_OBCS?_CONTROL without
1522      exf/cal
1523      - ctrl_init: fix initialisation (computation of diffrec) for obcs-ctrl
1524        and handle case of obcs?period == 0
1525        Not affected by these changes: There is still an inconsistency in
1526        the computation of start/endrec for the obcs variables for ALLOW_CAL
1527        defined (see comment by Menemenlis, 7-Mar-2003)
1528      - make S/R ctrl_get_gen_rec return something meaningful even if
1529        ALLOW_CAL is not defined
1530      - ctrl_getobcs?: simplify code so that it does not need to use
1531                       S/R exf_swapfields
1532    o testreport:
1533       allow to test MPI with different number of processors for each experiment:
1534       create file "SIZE.h.mpi" in each build dir.
1535       Note: update of "-command" argument not yet implemented.
1536    o model/src, pkg/autodiff, pkg/ecco, pkg/seaice:
1537      alleviate the need for additional 3D tapes when using
1538      the non-inear free surface in the adjoint. This is done
1539      by adding an 'update' of hfacc etc. to their current
1540      value at the beginning of forward_step.F.
1541    o pkg/seaice
1542      seaice_lsr: move stress-divergence computations out of outer pseudo-
1543      timestepping loop
1544    o pkg/obcs/obcs_prescribe_read.F: move 'CALL OBCS_EXTERNAL_FIELDS_LOAD'
1545      up, so that the calls of the ctrl_* subroutines are really at the end
1546      of the routine.
1547    o pkg/gmredi:
1548      allow to specify a 2-D horizontal map and a 1-D vertical profil
1549      as scaling factor for Isopycnal diffusivity (Redi) and GM diffusivity.
1550    o pkg/seaice:
1551      move lsr iterations from seaice_dynsolver to seaice_lsr.
1552    o pkg/seaice:
1553      reduce memory footprint of seaice mutldim advection tapes,
1554      by using a 2D tape independent of the generic_advdiff ones,
1555      and setting GAD_AREA=1 etc. rather than GAD_AREA=101 etc.
1556    
1557    checkpoint62q (2010/12/29)
1558    o model/src:
1559      - check horizontal grid-spacing for unset or zero/negative values.
1560      - change AD test hs94.1x64x5 to be truly a 2-D set-up.
1561    o pkg/flt:
1562      - use (recent) mdsio S/R MDS_READVEC_LOC instead of local FLT_MDSREADVECTOR
1563      - precision of input and output files set according to readBinaryPrec
1564        and writeBinaryPrec (previously always 64.b), pickup remains at 64 bits.
1565      - initial float position from tiled file was not converted to index space
1566        (looks like a bug): fixed to make it similar to initial pos. global file.
1567    o global_ocean.cs32x15:
1568       change SIZE.h of AD set-up to get same tiling as with MPI.
1569       Update output_adm, output_adm.thsice (pass@14) & output_adm.seaice (fail@11)
1570    o model/src:
1571       add flag to control printing of domain fields (bathymetry, hFac ...) in
1572       ini_mask_etc (call to plot_fieds_xy*).
1573    o pkg/thsice:
1574       if useEXF, some forcing fields are not valid in overlap: fixed by computing
1575       over the interior only + apply EXCH at the end (like with SEAICE advection).
1576    o pkg/mdsio:
1577      - add 2 arguments to S/R MDS_PASS_R4/8toRL/S for overlap size of buffer
1578        to copy to/from, so that it can be used to replace MDS_PASS_WH_R8toRL/RS.
1579      - change barrier call for safe multi-threads access to 3-D shared buffer.
1580      - MDS_READ/WRITEVEC_LOC use buffers from MDSIO_BUFF_3D.h (instead of local ones)
1581      - replace call to MDS_PASS_WH_R4/8toRL with call to MDS_PASS_R4/8toRL and
1582        remove the 4 S/R MDS_PASS_WH_R4/8toRL/S.
1583    o pkg/flt:
1584      - add fourth-order Runge-Kutta integration
1585      - add basic exch2 support (only 1 facet supported so far!)
1586    o pkg/mdsio+rw:
1587      new S/R to read local (or tile independent) vector (read counterpart of
1588       mds_writevec_loc, and front-end write_glvec_rl/rs).
1589    o global_ocean.cs32x15: additional input_ad.seaice experiment
1590        that uses pkg/seaice rather than pkg/thsice.
1591        (using multidim advection for seaice)
1592    o towards more F95 syntax for array specification in namelist:
1593      - change "data.diagnostics" (data.ptracers was changed before checkpoint62p)
1594        of all verification experiments.
1595           e.g.:    line: fields(1,3)='ETAN    ','ETANSQ  ',
1596          was changed to: fields(1:2,3)='ETAN    ','ETANSQ  ',
1597      - finish adding "-DNML_EXTENDED_F77" to DEFINES list in pgf77 and g77 optfiles
1598    o global_ocean.cs32x15: additional input.seaice experiment
1599        that uses pkg/seaice rather than pkg/thsice.
1600    
1601    checkpoint62p (2010/12/17)
1602    o pkg/thsice: rename (ad tape index) iicekey as ticekey, and move it
1603        to THSICE_SIZE.h to avoid conflict with pkg/seaice.
1604    o pkg/seaice: add seaice_diffusion.f seaice_map_thsice.f to adjoint.
1605        allow for use of multim. advection in seaice adjoint.
1606    o pkg/seaice: add diagnostics for snow precipitation and sublimation flux
1607      - first attempt to close budgets by taking into account the freshwater
1608        flux implied by the sublimation of snow and ice. So far only the
1609        volume budget is closed, turn on with soon-to-be-retired-again CPP-Flag
1610        SEAICE_ADD_SUBLIMATION_TO_FWBUDGET
1611    o eesupp/src:
1612      new S/R with new option (NML_EXTENDED_F77) to change array specification
1613      from F95 standard to commonly accepted extended F77 form.
1614      This would allow to use F95 syntax in namelist (needed with gfortran 4.4.5)
1615      and to revert back to the original syntax (with -DNML_EXTENDED_F77)
1616      for less tolerant f77 compiler (e.g., pgf77, g77).
1617    o globalFiles:
1618      commented out in parameter file "data" since it's not safe with MPI
1619      (e.g., wrong on aces); keep it if useSingleCpuIO=T (but not doing much
1620      in this case); no longer commented out in restart test (tst_2+2).
1621    o add adTapeDir to specify a special directory where adjoint tapes are
1622      written/read (adread_adwrite.F). adTapeDir is specified in data/PARM05
1623      and cannot be used together with mdsioLocalDir.
1624    o nesting pkgs:
1625      - packages_init_variables : put call to OBCS_INIT_VARIABLES in last position
1626      - update Gianmaria's Nesting pkgs (from Contrib/nesting_sannino)
1627      - add parameter files + utils dir + output from short run on beagle.
1628    o pkg/seaice:
1629        fix seaice_growth.F store directives; update results of exp. lab_sea.ad
1630    o pkg/seaice: explicitly store tsurfloc in seaice_solve4temp.F to avoid
1631      unnecessary copying in adjoint code, requires new parameter NMAX_ITER
1632    
1633    checkpoint62o (2010/11/25)
1634    o pkg/exf:
1635      - change CPP option EXF_VERBOSE to run-time logical param exf_verbose.
1636    o pkg/seaice:
1637      - seaice_ocean_stress: split a loop for better vectorization of the
1638        adjoint code
1639      - seaice_growth.F: fix bug in conservation of freshwater connected to
1640        capping of heff, put contribution into d_HEFFbyNEG
1641      - replace irritating parameters SEAICE_latentWater/Ice and SEAICE_sensHeat
1642        by something more sensible (parameters that are what their name implies)
1643      - change some defaults, so that by default exf-parameters are used for
1644        things like rhoAir, cpAir,latent/sensible heat parameters, in order
1645        to reproduce the old results, many data.seaice now contain funny values
1646        for cpAir and latent heat of sublimation
1647    o packages_readparms.F: move exf_readparms up in line so that
1648        exf-parameters are visible for other packages (e.g. seaice)
1649    o debugMode & debugLevel=2:
1650      - differentiate between debugMode & debugLevel=2:
1651        debugMode: controls printing of debug messages (sequence of S/R calls).
1652        debugLevel: controls printing of algorithm intermediate results and stats.
1653      - remove "if debugLevel=2 => debugMode" but keep "debugMode =>  debugLevel=2";
1654        => allows to print debug-stats without all sequence of call messages.
1655      - switch control of debug print from debugLevel to debugMode in many S/R.
1656    o pkg/obcs (obcs-sponge):
1657        fix bug that was introduced on Oct 25 (in dynamics.F v1.151): put back the
1658        call to OBCS_PRESCRIBE_EXCHANGES (need to exch gU,gV when using obcs-sponge)
1659    o pkg/generic_advdiff:
1660      - record overlap minimum size for each advection scheme;
1661      - refine criteria on overlap minimum size;
1662      - check and stop (in gad_check) if overlap size is too small.
1663    o pkg/obcs:
1664      - with ptracers: remove multiple calls to obcs_apply_ptracer (only done
1665        once, in ptracers_implicit.F)
1666      - with seaice: remove test on empty file name in obcs_apply_seaice (always
1667        apply OB values when tile has OB)
1668    o model/src, coriolis setting:
1669      - integer parameter "selectCoriMap" (=0,1,2) replaces 3 logical
1670        useConstantF, useBetaPlaneF, useSphereF ; can now read coriolis from
1671        files (selectCoriMap=3) with any grid.
1672      - add parameter "fPrime" for constant second Coriolis coeff (default=0).
1673    o pkg/seaice/seaice_growth.F:
1674        a few cosmetic changes that reduce the number of lines of code
1675    o pkg/obcs: add boundary conditions following Stevens (1990)
1676      - the code follows old MOM/NAOSIM code
1677      - so far it is only implemented for the eastern and western boundaries
1678        and NOT for pTracers
1679    o pkg/rbcs:
1680      - replace rbcsInIter by rbcsForcingOffset, the time in seconds at the
1681        beginning of the first rbcs forcing period.
1682      - add option rbcsSingleTimeFiles that makes rbcs read forcing data like the
1683        offline package, i.e., one file per time, labeled by iteration number;
1684        deltaTrbcs sets the timestep with which the data was generated;
1685        rbcsIter0 is the forcing iteration corresponding to rbcsForcingOffset.
1686      - rbcsForcingCycle=0 makes forcing non-cyclic.
1687      - make arithmetic safe for negative times and odd forcing periods.
1688    
1689    checkpoint62n (2010/11/09)
1690    o pkg/seaice:
1691        fix masking in free-drift S/R ; update results of exp. lab_sea.fd
1692    o pkg/obcs:
1693       New S/R to copy tracer value from the OB location to narrow band region
1694        (width = same as overlap) beyond the OB: preserve OB value (needed for
1695        high-order scheme) which were overwritten by EXCH call if in overlap
1696        region. Applied to theta, salt, ptracer and advected seaice variables.
1697       With seaice: use maskInC in similar way as in gad_advection.F,
1698        in seaice_advection.F and advect.F.
1699       Update output of experiment seaice_obcs and change exp4 to test OBCS with
1700        4th order Adv.Scheme. for pasive salt and ptracer.
1701    o tools/genmake2:
1702      - when looking for an optfile (not specified), only search for Fortran compiler
1703        (remove sym-link test + setting of CPP + makedepend check + C-compiler check)
1704      - in get_fortran_c_namemangling: use "$CC $CFLAG" to compile C test programm
1705        (instead of "$MAKE genmake_test.o" since an existing Makefile can be wrong)
1706      - set default for CPP to "cpp -traditional -P" (was the case without specifying
1707        an optfile, but otherwise default was just "cpp".
1708      - comment out PLATFORM=$p_PLATFORM (no idea where p_PLATFORM comes from)
1709      - when "CC" is not set in the optfile, look for possible C compiler
1710        (instead of just setting CC=cc)
1711      - put back version v.169 modif (from 2008/02/15), was dropped in v.173 changes:
1712        => add a ".F" to ".o" rule for source files with no "#include" (such as
1713           port_rand.F); otherwise, default ignores FOPTIM and just uses FFLAGS.
1714      - move gfortran before g77 in list of possible Fortran compiler (consistent
1715        with reference compiler switch from g77 to gfortran)
1716    o pkg/seaice:
1717      o remove SEAICE_OLD_AND_BAD_DISCRETIZATION-code, add a test to
1718        seaice_check that stops the model, when the CPP flag is used.
1719      o seaice_growth.F: make capping of ice volume conserving by returning the
1720        capped ice as freshwater to EmPmR. This does not change the verification
1721        experiments but will change runs where the capping is acutally active
1722    o change reference platform+compiler from faulks+g77 to baudelaire+gfortran
1723      (except the 2 fizhi test exp.); update output of exp.: bottom_ctrl_5x5,
1724         global_ocean.cs32x15 (icedyn, thsice, AD thsice), global_ocean_ebm (AD),
1725         lab_sea (fd, hb87, salt_plume), MLAdjust (3/5) and vermix (dd)
1726    o tools/genmake2:
1727      - merge genmake_warnings & genmake_errors into 1 log file: "genmake.log")
1728      - change DUMPSTATE default to false (can use "-ds" option to switch it to T)
1729      - clean previous genmake log files before anything else.
1730      - change Makefile to remove testreport log files (*.tr_log) and genmake log
1731        files only with "CLEAN" target (instead of "Clean");
1732    o pkg/generic_advdiff:
1733      Change OBCS in multiDim advection (gad_advection.F):
1734       Use maskInC to prevent intermediate update of tracer-field in OB regions,
1735       thus keeping current-time-step OB values; and remove the call to OBCS_APPLY
1736       which were applying future time-step OB values.
1737      This way, all explicit calculations use current-time-step OB values
1738       (simpler and more consistent).
1739      Affects results when set-up uses time-varying OBC and multi-dim advection;
1740       update output of experiment seaice_obcs.
1741    o pkg/seaice:
1742      move OPTIONS (formerly locally defined) to SEAICE_OPTIONS.h:
1743       this includes SEAICE_GROWTH_LEGACY (+ SEAICE_DO_OPEN_WATER_GROWTH &
1744         SEAICE_OCN_MELT_ACT_ON_AREA ) and SEAICE_SOLVE4TEMP_LEGACY.
1745      Default (pkg/seaice/SEAICE_OPTIONS.h) is to define SEAICE_SOLVE4TEMP_LEGACY
1746       but leave SEAICE_GROWTH_LEGACY undef ; For now, keep verification exp
1747       unchanged (SEAICE_GROWTH_LEGACY defined in */code*/SEAICE_OPTIONS.h)
1748    o pkg aim (2010/10/26):
1749      - Introduce ALLOW_INSOLATION, moving toward a more general incoming solar radiation
1750        formulation with obliquity, eccentricity, ... as run-time parameters,
1751      - Introduce diagnostics for top-of-the-atmaophere incoming solar radiation and
1752        upward shortwave radition at the surface (all-sky and clear-sky).
1753    o pkg/obcs:
1754      - writing sections with globalFiles=T does not work: switch to tiled-files
1755        when writing sections for OBCS (change pkg/rw/write_rec.F accordingly).
1756      - fix index bug (OB_Ie -> OB_Iw_) in obcs_apply_uvice.F
1757      - apply OBCS_SEAICE_COMPUTE_UVICE to both uice and vice at all obcs
1758    
1759    checkpoint62m (2010/10/21)
1760    o pkg/seaice: vectorize seaice_solve4temp.F
1761      - move iterations loops outside of i/j-loops
1762      - requires 2D arrays for TB and effConduct
1763      - add 2D iceOrNot to replace HICE_ACTUAL.GT.0, as HICE_ACTUAL is
1764        modified in this routine
1765      - a little bit of clean up, adjusting indentation, etc.
1766      - replaced a few TEN**a by exp(a*log(10.)) in new code for better
1767        performance and '**TWO' by '**2' (because TWO is a float),
1768        replaced ONE, ZERO
1769    o eesupp/src:
1770       fix flow dir for exch1_z_RX_cube, exch1_uv_RX_cube & exch1_bg_RX_cube
1771    o pkg/seaice/seaice_growth.F
1772      Revision 1.89 of seaice_growth.F completes the overall october 2010 revision and
1773      merging process. The merged routine has two branches, and one activates the 'evolution'
1774      branch by setting SEAICE_GROWTH_LEGACY to undef (at the top of the routine for now).
1775      In summary, here is what the '10/10 revision' did consist of
1776        part 1: seaice_growth.F revisions 1.71 to 1.75
1777          - Preliminary seaice_growth.F clean-up, keeping test results strictly unchanged.
1778            The emphasis here was on improving readability (e.g. by trying to use meaningful
1779            variable names) and modularity (e.g. by adding arrays to store heff etc. updates).
1780        part 1.5:
1781          - revising the lab_sea experiment to make it a more useful (i.e. stable
1782            and representative of an actual model run). This was done by generating a
1783            (winter) pickup to start from, switching back the main experiment dynamic
1784            solver from evp to lsr, having one of the experiments use the free drift solution.
1785        part 2: seaice_growth.F revisions 1.76 to 1.85
1786          - Sorting out hard-coded constants that prevented heat and fresh water conservation.
1787          - Sorting out the various fields units and sign (set early on and reset at the end)
1788            to avoid numerous scalings/re-scalings. By v1.85 the basic unit for ice, heat and
1789            fresh water stock is 'effective ice meters', and >0 implies more ice/snow.
1790          - Using tendency terms arrays (d_HEFF* etc.) to alleviate remaining code locks,
1791            and simplifying logical expressions to further improve readibility.
1792        part 3: seaice_growth.F revisions 1.86 to 1.89
1793          - Re-organize the blocks of code more logically.
1794          - Merging the '_if.F' pieces that add something new.
1795    o pkg/thsice:
1796      - vectorize thsice_solve4temp and thsice_get_exf.
1797        Problem: thsice_solve4temp has an unvectorizable statement that
1798        might also be problematic for TAF
1799      - thsice_get_exf: add the ALLOW_BULK_LARGEYEAGER04 CPP-flag. This
1800        does not change the verifcation experiment, but will change all
1801        experiments that have this flag undefined (not tested in verification);
1802        a little reorganization to save a few 2D fields and recomputations
1803      - 1st step of revisiting thsice adjoint (major recomp. sorted out)
1804      - 2nd step:  fix some store dirs
1805        o seems to work somewhat, i.e. using ifort but not g77
1806        o likely cause are incomplete init. or recomputation
1807        o start verification/global_ocean.cs32x15/input_ad.thsice
1808    o pkg/obcs: add support for exch2
1809      - the position of the boundary and prescribed values are specified using
1810        a global domain with exch2 facets stacked
1811        - in x for N,S boundaries (like W2_mapIO=-1)
1812        - in y for E,W boundaries (so E,W boundaries do not overlap)
1813    o pkg/mdsio: add support for writing global sections with exch2
1814        file layout is as for obcs described above:
1815        - for x-z sections, facets are stacked in x (like W2_mapIO=-1)
1816        - for y-z sections, facets are stacked in y
1817    o pkg/thsice:
1818       - change a few routines for better vectorization: thsice_albedo.F,
1819         thsice_step_temp.F, and in thsice_calc_thickn.F. Results are
1820         not affected, but in particular the latter routine has changed
1821         dramatically (not necessarily easier to read now).
1822       - re-arrange calculation in THSICE_SOLVE4TEMP: move outside of i,j loops
1823       iteration loop and call to S/R THSICE_GET_BULKF & THSICE_GET_EXF.
1824    o verification/lab_sea:
1825      - overhaul of the forward model experiments. The main motivation
1826        for this revision is that lab_sea has proven quite fragile (when
1827        changing the sea-ice code, and switching platforms) to a point
1828        when failures were very hard to attribute to specific code problems.
1829      - the suspected reason for this fragility is noise amplification by evp so,
1830        to start with, we decided to replace evp with lsr in the main experiment.
1831      - the input.lsr experiment thus became obsolete and was removed.
1832      - it was replaced with the input.fd experiment that uses an
1833        analytical "free drift" solution as the ice velocity field.
1834      - Taken together, input (lsr), input.fd (free drift) and input.hb87 (evp)
1835        will hopefully allow us to discriminate problems due to dynamic solvers
1836        from problems due to the thermodynamic code. input.salt_plume (lsr) allows
1837        us to test additional options, along with the salt plume package.
1838      - Finally a pickup was generated (at the end of a one year run) to
1839        make the tests more representative of an actual model run. Previously
1840        the tests starting point was a 1m thickness of ice everywhere.
1841    o pkg/seaice:
1842      - introducing S\R seaice_freedrift.F that compute the
1843        analytical solution to an approximate ice momentum
1844        equation (i.e. the simple stress/coriolis balance).
1845      - define SEAICE_ALLOW_FREEDRIFT to trigger the computation
1846        of the free drift velocity field, and enable its use.
1847        To actually use the free drift solution as the model ice
1848        velocity field set SEAICEuseFREEDRIFT to .TRUE. in data.seaice.
1849    o move "useOASIS" from PARAMS.h to EEPARAMS.h and read it from "eedata"
1850    
1851    checkpoint62l (2010/10/04)
1852    o pkg/seaice:
1853      -fix the USE_ORIGINAL_SBI version (for variable freezing point);
1854      -use "celsius2K" in SEAICE_VARIABLE_FREEZING_POINT and in new
1855       version (with USE_ORIGINAL_SBI undef);
1856    o add hooks for new packages OASIS, the package will follow
1857      (hooks exclude the seaice pkg for now)
1858    o pkg/autodiff: ALLOW_AUTODIFF_WHTAPEIO
1859      Option to use mdsio_read_whalos.F/mdsio_write_whalos.F,
1860      rather than mdsio_readvector.F/mdsio_writevector.F, within
1861      adread_adwrite.F to read/write adjoint-related tapes to disk.
1862    o eesupp and pkg/mdsio: ALLOW_WHIO
1863      Option to write/read 2D fields to files including tiles halos.
1864      The main purpose is for adjoint related "tape I/O".
1865      The secondary purpose is for debugging phases.
1866      A word on those rather specifically intended purposes.
1867      The code was meant to be stripped down to the bare minimum.
1868      Typically, there is a unique and basic mapping to the global
1869      buffer (tile by tile, then proc by proc, then level by level), and
1870      byteswaps and meta-files are omitted. Indeed the (*_WH*) code is not
1871      meant to generate user friendly outputs of various shapes and forms.
1872      Rather it is intended, for the knowledgeabale developers,
1873      to be largely independent of the many mdsio options, to allow
1874      outputs of tiles+halos in debugging phases and in adjoint runs,
1875      and to allow some flexibility in tuning (adoint) I/O depending on each
1876      file system behavior. With regard to tuning, most of the potential knobs
1877      (to leave files open, to allocate the I/O indep. of usesinglecpuio,
1878      to specify directories, to specify the typical size of I/O calls, etc.)
1879      are not yet included, and will be added if they prove useful.
1880    o pkg/seaice:
1881       fix uninitialised arrays in USE_ORIGINAL_SBI version of seaice_solve4temp.F
1882    o pkg/seaice:
1883       new S/R seaice_solve4temp.F: this is the merged version of Ian Fenty
1884       code (seaice_budget_ice_if.F) which enable to recover old standard
1885       code (seaice_budget_ice.F) when option USE_ORIGINAL_SBI is defined.
1886       temporary: add "#define USE_ORIGINAL_SBI" at the top of seaice_solve4temp.F.
1887    o model/src (rStar):
1888       use simple average (not area weighted) of rStarFac at U,V point when using
1889       vectorInvariant and selectKEscheme=1,3 (consistent with mom. vertical advection)
1890       update output of exp. fizhi-cs-32x32x40 and fizhi-cs-aqualev20.
1891    
1892    checkpoint62k (2010/09/17)
1893    o adjoint
1894       * changed verification/global_ocean.cs32x15 ; adjoint now tests
1895         Adams-Bashforth 3 + NLFS + RSTAR
1896       * some more modifs required for ECCO-GODAE v4
1897    o pkg/seaice
1898       add SEAICE_AGE_VOL option to use volume instead of area for
1899       integrating SEAICE_AGE
1900  o model/src:  o model/src:
1901     first check-in of sigma & hybrid-sigma coordinate code ; also includes     first check-in of sigma & hybrid-sigma coordinate code ; also includes
1902     non-linear free-surface parts ; but pressure-gradient not yet coded.     non-linear free-surface parts ; but pressure-gradient not yet coded.
# Line 273  o tools/build_options: Line 2166  o tools/build_options:
2166      but keep the former optfile for few weeks for smooth transition      but keep the former optfile for few weeks for smooth transition
2167  o pkg/ecco  o pkg/ecco
2168    - allow user defined cost function contributions    - allow user defined cost function contributions
2169          CPP: ALLOW_USERCOST_CONTRIBUTION       CPP: ALLOW_USERCOST_CONTRIBUTION
2170          USAGE: compute contributions in cost_usercost_all.F       USAGE: compute contributions in cost_usercost_all.F
2171    - note: this is identical to what ALLOW_GENCOST_CONTRIBUTION once was.    - note: this is identical to what ALLOW_GENCOST_CONTRIBUTION once was.
2172        the two options are complementary.        the two options are complementary.
2173  o pkg/smooth  o pkg/smooth

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