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revision 1.1295 by jmc, Sat Sep 11 21:39:13 2010 UTC revision 1.1647 by jmc, Sat Apr 7 20:07:44 2012 UTC
# Line 4  $Name$ Line 4  $Name$
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    o pkg/exf:
8     - new S/R EXF_GETFIELD_START to return starting-time of a forcing field
9       (according to useExfYearlyFields).
10    o pkg/cal:
11     - move calendar setting & summary (previously in cal_readparams.F) into new
12       S/R CAL_INIT_FIXED to be called later in the initialisation process, once
13       length of the simulation is set (after SET_PARMS call); This is an attempt
14       to fix Pb when, e.g.: pkg/longstep, modifies the length of the run.
15     - For safety: keep a record of pkg/cal parameter settings status
16               to allow to STOP if one pkg/cal S/R is called too early.
17     - add a stop in all basic pkg/cal subroutines if called before setting is done.
18     - modify cal_getdate.F: stop when nothing was returned;
19       if called with myIter=-1, simply retrun modelBaseDate (1,2 = startDate_1,_2);
20       this allows to remove "cal.h" from seaice_read_parms.F & init_mnc_vars.F.
21    
22    checkpoint63l (2012/04/04)
23    o pkg/bbl:
24      - fix call to FIND_RHO_2D in bbl_calc_rho.F (case multi-tiles per proc);
25        update global_with_exf output.yearly.txt file.
26    o pkg/cal:
27      - start to clean-up cal_set.F ; fix for the case where baseTime is non-zero.
28      - remove 2 unsused and very short (1 line only) functions ;
29      - remove unsused subroutines from AD-Diff list.
30    o model/src:
31      - start to implement clean wait to stop in initialization S/R (config_check.F,
32         packages_check.F, ini_parms.F and pkg/obcs/obcs_check.F + pkg/mypackage)
33    o folowing PRINT_MESSAGE changes:
34      - remove reminder multiple print to the same file (STDOUT) when multi-threads.
35    o pkg/bbl:
36      - modification so it can work with z*
37      - replace deltaT with dTtracerLev(k) for asynchronous time stepping
38      - global_with_exf/input.yearly verification; changes output.yearly.txt
39    o eesupp/src:
40      - PRINT_MESSAGE: use OpenMP critical instruction (similar to PRINT_ERROR);
41        writing to unit 0 (if unit=errorMessageUnit) extended to the case myThid=1
42      - CHECK_THREADS: specific code if using OpenMP threading: improve checking of
43        # of threads across processors (e.g., different env OMP_NUM_THREADS setting)
44      - improve special preliminary call to EESET_PARMS (if eedata is read 2 times).
45      - when using MPI, always set usingMPI=T ; set default accordingly and stop
46        if not consistent.
47      - ALL_PROC_DIE: add a BARRIER after MPI_FINALIZE call ; skip this when thread
48        argument is zero (in case called within single-thread section).
49    o pkg/fizhi:
50        clean-up turbulence cold-start switch: decided in fizhi_init_vars.F, stored
51        in common bloc (fizhi_coms.h) and then passed as argument up to S/R TURBIO.
52    o pkg/exch2:
53      - add argument "updateCorners" to S/R exch2_get_uv_bounds (enable to
54        activate EXCH_IGNORE_CORNERS in vector EXCH S/R).
55      - switch 1rst EXCH call to IGNORE_CORNERS (instead of UPDATE_CORNERS)
56        but keep the 2nd with UPDATE_CORNERS: this prevents overwriting good data
57        with bad ones coming from a not-yet-updated halo.
58        This should fix the problem when sNx <> sNy and GCD(sNx,sNy) < 2*Olx.
59    o pkg/frazil:
60        move FrzForcT diag from frazil_diagnostics_state.F to frazil_calc_rhs.F
61        http://mitgcm.org/pipermail/mitgcm-devel/2012-March/005384.html
62    o model/src/config_check.F: add a check for OLx>sNx/OLy>sNy
63    o verification/lab_sea
64      * #undef SEAICE_EXCLUDE_FOR_EXACT_AD_TESTING
65      * #define ALLOW_SST_CONTROL & ALLOW_SST_CONTROL
66      * nTimeSteps 3 -> 4
67      * changed reference output accordingly
68    o pkg/ctrl:
69      * fix ctrl_get_gen for xx_sst, xx_sss
70    o pkg/fizhi:
71      - fix 2 calls to S/R GRD2MSC (argument igrd) in update_earth_exports.F
72        update results of exp. fizhi-cs-32x32x40 (fail with only 6 digits for cg2d)
73      - by default, use new version of S/R GETPWHERE (#define TRY_NEW_GETPWHERE);
74        fix few out-of-bounds indices in referencing vars (initialise igrd to 1);
75        clean-up fizhi_turb.F (remove unused & uninitialised qdiaglsm array).
76    o pkg/gmredi:
77      - add diagnostic of Redi (main diagnonal) vertical diffusive flux of Temp
78    o pkg/fizhi:
79      - fix few initialisation and multi-tile Pb: aqualev & gridalt now pass the
80        (old)aces open64 tuv test.
81    o pkg/icefront: fix bug and reorder loop in icefront_init_varia.F
82    o pkg/mom_vecinv:
83      - fix 1 loop range in mom_vecinv.F to be like all the other loops which
84        set/update gu,gv/Diss (fix Pb of uninitialised fVerUkp in admom_vecinv
85        with non-lin free-surf).
86    o model/src: move k-loop outside of i/j-loops when (re-)computing R_low
87      in ini/update_masks_etc.F in order to avoid -O3 optimization problems with
88      some compilers (gfortran 4.6.0 on MacOS)
89    o momentum:
90      - separate fVer?(:,:,kUp) & fVer?(:,:,kDown) in argument list of MOM_FLUXFORM
91        & MOM_VECINV subroutines (to help TAF). This fixes Pb of uninitialised
92        fVer?(kUp) in admom_fluxform with non-lin free-surf or bottom control.
93    
94    checkpoint63k (2012/03/17)
95    o model/src:
96       - selectAddFluid (ALLOW_ADDFLUID): add missing term in horizontal momentum
97         flux-form (mom_fluxform.F) and vertical momentum (calc_gw.F) equations.
98       - SOLVE_DIAGONAL: switch default to use adjoinable & vectorized version
99         (#undef SOLVE_DIAGONAL_LOWMEMORY); update output of exp. front_relax.bvp.
100    o model/src: solve_*diagonal.F
101       - replace division with multiplication by inverse (similar to original version)
102         update output of AD exp. global_ocean.90x40x15.
103       - fix pkg/gmredi/gmredi_calc_psi_bvp.F & pkg/ggl90/ggl90_calc.F
104         to enable the use of the vectorized & differentiable solve_tridiagonal.F
105       - test exp. global_ocean.90x40x15/input_ad: switch to advection scheme 20 for
106         vertical advection (to get solve_tridiagonal tested in AD mode).
107    o pkg/seaice: ECCO-CLIVAR merge:
108      1. seaice AREA relaxation
109         * CPP option: SEAICE_ALLOW_AREA_RELAXATION
110         * runtime flag: SEAICE_tauAreaObsRelax
111      2. modified global mean cost imbalance code: CPP option
112          ALLOW_SSH_GLOBMEAN_COST_CONTRIBUTION
113    o another iteration on solve_*diagonal.F
114       Make choices independent of AUTODIFF
115       Default will be the adjoinable vectorized version.
116       Alternative choices are:
117       * non-adjoinable original version with low memory footprint:
118         #define SOLVE_DIAGONAL_LOWMEMORY
119       * still adjoinable but does not vectorize (k as inner-most loop):
120         #define SOLVE_DIAGONAL_KINNER (keeping SOLVE_DIAGONAL_LOWMEMORY undef)
121    o testreport
122     - add option to use a home made wrapper around "make"
123     - remove MITGCM_IEEE env. variable (no longer active)
124    o pkg/shelfice
125     - improve computation of friction velocity for velocity dependent
126       exchange coefficients: include velocities into SHELFICEBoundaryLayer
127       block to average velocities vertically
128     - add TAF store directives for SHI_ALLOW_GAMMAFRICT
129    o Modify diagonal solvers, now three versions (upon request):
130      #ifndef SOLVE_DIAGONAL_AUTODIFF
131        1. default version (dating back a while ago)
132      #else /* def SOLVE_DIAGONAL_AUTODIFF */
133      # ifdef SOLVE_DIAGONAL_KINNER
134        2. adjoinable version with k-innermost loop (G. Forget)
135      # else
136        3. adjoinable vectorized version of 2.
137      # endif
138      #endif /* SOLVE_DIAGONAL_AUTODIFF */
139      All flags are currently set within routines, but could/should be moved to CPP-options.
140      Array bounds for 1. are as before, for 2.,3. cover the entire domain
141      (could be changed for 1. too).
142    o verification/lab_sea (fwd):
143      - update the 4 fwd lab_sea test experiment: no longer SEAICE_GROWTH_LEGACY,
144        use 7 categories (except hb87), new solve4temp params (except salt_plume),
145        constant salinity (=4) or variable salinity (salt_plume) done through
146        SItracer.
147    o pkg/seaice:
148      - rename parameters: SIsalFrac to SEAICE_saltFrac & SIsal0 to SEAICE_salt0;
149      - remove old parameters ( SEAICE_freeze, SEAICEturbFluxFormula, SEAICE_gamma_t,
150         SEAICE_gamma_t_frz, SEAICE_availHeatTaper & SEAICE_availHeatFracFrz)
151        from SEAICE_PARMS.h ; still need to fix seaice_cost_sst.F (broken when
152        SEAICE_freeze got retired) but already better than previously with
153        SEAICE_freeze=123456.7 deg.C;
154      - move setting of facOpenGrow/Melt from SEAICE_INIT_FIXED to SEAICE_READPARMS
155        (safer multi-threaded setting); always set SEAICEuseEVP;
156      - setting of ocean-ice turb. flux coeff: moved from SEAICE_CHECK to
157        SEAICE_READPARMS & SEAICE_INIT_FIXED (this fixes wrong summary report);
158        stop if multiple specifications for the same coeff; make sure default
159        SEAICE_mcPheePiston is compatible with drF(1) & deltaT.
160    o pkg/obcs:
161      - allow to switch to upwind 1rst order advection scheme for the advective
162        flux computation at the open-boundary; disabled for adjoint built.
163    o pkg/ptracers:
164      - rename PTRACERS_RESTART.h -> PTRACERS_START.h
165      - rename ptracers_fields_blocking_exchanges.F -> ptracers_fields_blocking_exch.F
166      - add parameter to decide when to start a tracer; use internal flag to
167        know which tracer to step-forward; switch this internal flag at the top
168        of forward_step.F (new S/R PTRACERS_SWITCH_ONOFF); for now, not enabled
169        for adjoint built.
170    o pkg/seaice:
171      - add SEAICE_SIZE.h anywhere in the code where SEAICE.h is included ;
172      - move MULTDIM declaration and setting from SEAICE.h to SEAICE_SIZE.h ;
173      - keep experiment offline_exf_seaice truly single category (set MULTDIM=1).
174    o pkg/ecco:
175      - fix writing of output file DiagnosCost_ClimSalt/Theta
176        and DiagnosCost_DriftSalt/Theta (if multi-tiles per proc).
177    o pkg/seaice:
178      - add missing initialisation of COR_ICE array in dynsolver.F
179      - merging SEAICE_MULTICATEGORY define and undef cases. Now the same code is
180        compiled either way, and is tested in all exps (multidim was only tested
181        in lab_sea ad before).
182      - cosmetic change to prepare for future addition of ITD. no change to results.
183        no defaults change.
184      - added run time param SEAICE_multDim (7 for SEAICE_MULTICATEGORY, 1 otherwise).
185      - by lack of adequate verification experiments, I further used custom versions
186        of global_ocean.cs32x15 to test multicat or not, with pickup or not. All
187        should be correct.
188      - avoid recomputations in ad.
189    o array initialisation in adjoint mode:
190      1) pkg/mom_common/mom_calc_ke.F:
191        add full array initialisation of KE inside mom_calc_ke.F (ALLOW_AUTODIFF_TAMC):
192        The S/R which calls MOM_CALC_KE initialises KE but in some recomputation
193        part this initialisation is gone, resulting in Floating Point Exception
194        (caught by open64 compiler with debug option).
195      2) model/src/convective_weights.F
196        set output convectCount over the full array range (instead of doing
197        an update): this fix a similar issue when called within recomputation (adjoint)
198        which could by-pass the initialisation (normally done in the caller S/R).
199    o pkg/seaice:
200      - final version of turbulent flux params, as agreed at MIT ice meet:
201           SEAICE_mcPheePiston (default is ~ 0.000875)
202           SEAICE_mcPheeTaper (default is 0.)
203           SEAICE_frazilFrac (defualt is 1.)
204           SEAICE_mcPheeStepFunc (default is false)
205      - changes results at trunction error level
206      - ifdef SEAICE_EXTERNAL_FLUXES, disallow SEAICE_waterAlbedo
207    o added pkg/frazil:
208      - see frazil_description.tex for details
209      - verification experiment is global_with_exf/input.yearly; changes output.yearly.txt
210    o pkg/shelfice/shelfice_thermodynamics.F
211      - fix exponents for velocity dependent exchange coefficients: change
212        from 2/3(=0) to 0.66666666666666667
213      - move computation of velocity dependent exchange coefficients into
214        separate loop, so that it applies to both thermodynamics
215      - move some divisions by constants out of loops
216    
217    checkpoint63j (2012/02/16)
218    o pkg/seaice:
219      - overhaul of seaice_summary.F after feb 2012 clean-up of seaice_growth.F etc.
220      - SItracer:  added run time params, and allow coupling to ocn salinity.
221    o pkg/seaice: remove (almost) all divisions by constants within loops
222      in seaice_growth.F and seaice_solve4temp.F, this changes (only) the cg2d
223      results of global_ocean.cs32x15.seaice from 16 to 11 digits (but only
224      those, caused by 1/QI -> recip_QI) -> update output.seaice.txt,
225      output_adm.seaice_dynmix.txt and also lab_sea: output_adm.evp.txt
226    o pkg/seaice :
227      - simplify McPhee tapering, and allow to use it with SEAICEturbFluxFormula
228        = 1 or 2, using newly added run time parameter SEAICE_availHeatTaper.
229      - fix d_AREAbyATM, d_AREAbyOCN, d_AREAbyICE diags I broke in r1.148.
230      - add permanent SItflux diag that corresponds to TFLUX but includes
231        ice+snow. Hence SItflux-TFLUX should match the ice+snow heat budget.
232      - allow activation/testing of a fix for suspected missing term in
233        ocn-ice heat budget (to be confirmed). To test this, you want to
234        undef SEAICE_DISABLE_HEATCONSFIX, and then set the run time param
235        SEAICEheatConsFix to .TRUE. that also allows the 'SIaaflux' diagnostic.
236      - no change in results, fwd or ad.
237    o global_ocean.cs32x15/results: 3 changes following from the pkg/seaice commit below:
238      - switch to variable freezing point.
239           Results change : cg2d -> 1 digits; ad -> 3-6-6 digits.
240      - bug fix : the sublimation term that was missing is now activated.
241           Results change : cg2d -> 2 digits; ad -> 8-6-6 digits.
242      - bug fix : flooding sign term for SIsal0.NE.0.
243           Result change : cg2d -> 8 digits; ad -> 11-12-9 digits.
244    o pkg/seaice:
245      - unified freezing point treatment : the old SEAICE_VARIABLE_FREEZING_POINT
246        is now the default, and the old default constant freezing point is recovered
247        with SEAICE_tempFrz0    = -1.96,
248             SEAICE_dTempFrz_dS = 0.,
249      - retire SEAICE_freeze (= the old way of specifycing the constant freezing point)
250      - remove ALLOW_SEAICE_FLOODING brackets; run time switch is already there.
251      - bug fix (thanks to M. Losch) : the sublimation term that was missing is now
252        activated. To reproduce old results with this bug define SEAICE_DISABLE_SUBLIM.
253      - bug fix (silly me) : flooding sign term (seaice_growth.F r 1.149line 1211)
254        was wrong for SIsal0.NE.0. Changes cs32x15 results (see above item for detail).
255      - bug fix (thanks to O. Jahn) : area loss for melting  got messed up in
256        seaice_growth r149 for legacy branch (no results change).
257      - introduce SEAICE_CAP_SUBLIM : caps sublimation heat flux in solve4temp (code
258        from I. Fenty).
259      - results did not change except for global_ocean.cs32x15, mostly due to the
260        switch to variable freezing point (see above item for detail).
261    o pkg/thsice:
262      - fix and simplify interface to salt_plume pkg ; diagnose directly amount of
263        seawater freezing in thsice_calc_thickn (not used).
264    o pkg/seaice: turbulent flux term specification via run time params.
265      - replace CPP switches with run time switches to facilitate testing
266      - retired CPPs : MCPHEE_OCEAN_ICE_HEAT_FLUX,
267                       GRADIENT_MIXED_LAYER_TURBULENCE_FACTOR
268      - added runtime parameter : SEAICEturbFluxFormula
269      - move Mcphee constants to SEAICE_PARAMS.h
270      - seaice_readparms.F : read turbulent flux term params (SEAICEturbFluxFormula;
271                 SEAICE_availHeatFrac/Frz, or SEAICE_gamma_t/_frz if apply);
272                 remove seaice_summary call (moved to seaice_init_fixed)
273      - seaice_init_fixed.F : set SEAICE_availHeatFrac/Frz depending on
274        SEAICEturbFluxFormula, and seaice_summary call (moved from seaice_readparms)
275      - seaice_summary.F : add missing report of read turbulent flux term set up
276                           and SITRACER.
277      - seaice_check.F : check range; inform and stop if retired CPPs are used
278                         (incl. SEAICE_AGE).
279      - seaice_growth.F : unified use of SEAICE_availHeatFrac/Frz, without
280             CPP switch, same computation as before for the different options.
281      - change results at the truncation level.
282    o pkg/seaice:
283      - remove un-used parameters LAD & MAX_TICE ; add new run-time parameters:
284        useMaykutSatVapPoly (default=F), postSolvTempIter (default=2) and
285        SEAICE_wetAlbTemp (default=-1e-3). Remove option SEAICE_SOLVE4TEMP_LEGACY.
286      - update verification/*/input*/data.seaice:
287        to reproduce previous results with former #defined SEAICE_SOLVE4TEMP_LEGACY
288        code, set useMaykutSatVapPoly=T & postSolvTempIter=0 ;
289        and to reproduce previous results with former non-SOLVE4TEMP_LEGACY code,
290        set SEAICE_wetAlbTemp=0 & SEAICE_snowThick=0.
291    o pkg/seaice/seaice_solve4temp.F (SOLVE4TEMP_LEGACY):
292      - remove LEGACY code for solving for tsurf (A1,A2,A3) but maintain the same
293        algorithm (same choice: useMaykutPolySatVap=T, postSolvTempIter=0);
294        difference in results only due to machine truncation.
295      - remove MAX_TICE (tsurf is always =< TMELT anyway); keep MIN_TICE if using
296        MaykutPolySatVap; keep MIN_LWDOWN.
297      - adapt SEAICE_MODIFY_GROWTH_ADJ code (untested) to non-legacy formulation.
298      - update output of verification exp. lab_sea (4 fwd: 11 cg2d digits except hb87,
299        + 3 AD: 6 digits except evp) and offline_exf_seaice.seaice (12 digits).
300    o pkg/salt_plume:
301      - isolate saltPlumeFlux array exch into a specific S/R called from
302        do_oceanic_phys.F
303      - add interface to pkg/salt_plume (filling of saltPlumeFlux) in pkg/thsice.
304    o verification:
305      - move untested set-up to MITgcm_contrib/verification_other.
306    o pkg/seaice:
307      - retire old way of SEAICE_AGE. Now replaced with ALLOW_SITRACER.
308    o pkg/seaice:
309      - seaice_solve4temp.F (keeping results unchanged):
310        * add 2 future run-time params to select which saturation vapor pressure
311          formula is used and how post-iteration fluxes are set.
312          Temporary set these 2 params according to option SOLVE4TEMP_LEGACY;
313        * New piece of code (not used) to update surf. atmos. heat flux F_ia using
314          the linearized expression to stay consistent with tsurf finding.
315      - seaice_freedrift.F avoid floating exception in sqrt(y) since y=sqrt(x*x)-x
316        can be < 0.
317    o pkg/seaice/seaice_solve4temp.F (SOLVE4TEMP_LEGACY undef):
318      - remove from F_ia (and from it's derivative dFiDTs1) the contribution of
319        conductive heat flux F_c , and add it explicitly when updating tsurf as
320        solution of: Fc = Fia + d/dT(Fia - Fc) *delta.tsurf
321        so that now F_ia has a consistent meaning through the entire routine.
322        This causes differences at truncation level: update output of fwd exp.
323        global_ocean.cs32x15.seaice.
324    o pkg/seaice:
325      - lots of editing/cleaning in seaice_solve4temp.F + better documentation
326        of arrays, sign/direction of fluxes; no effect on results.
327      - replace hard coded 273.16 (=previous value of celsius2K) by celsius2K
328        in seaice_budget_ocean.F & seaice_solve4temp.F (SOLVE4TEMP_LEGACY part);
329        note: this should have been done before changing celsius2K default.
330      - to keep results unchanged, add back old value of celsius2K in verification
331        exp. input*/data : lab_sea (AD), offline_exf_seaice (fwd+AD) & seaice_obcs
332      - replace hard coded seawater freezing temp in seaice_solve4temp.F (part
333        SOLVE4TEMP_LEGACY) of 271.20 (=previous value of celsius2K + default
334        value of SEAICE_freeze) by celsius2K+SEAICE_freeze so that seawater
335        freezing temp is consistent with value in seaice_growth.F ; this causes
336        differences at machine truncation level: update lab_sea AD output (3/4).
337    o pkg/seaice:
338      - mask (in exf_init_fixed.F) atemp,aqh,evap,precip,runoff,lwflx,areamask
339        and climsst/sss even when using seaice (to prevent calculation that might
340        use SST on land); does not affect any verification exp.
341      - apply mask to taux,tauy (in seaice_get_dynforcing.F); update output
342        of lab_sea.fd & lab_sea.hb87 and global_ocean.cs32x15.seaice_dynmix.
343    o pkg/seaice/seaice_growth.F: add mask to avoid non-zero ice thickness
344      over land (non-legacy code)
345    o vectorize salt_plume package:
346      - add extra code to salt_plume_frac and salt_plume_tendency_apply_s
347      - this code computes plumebk everywhere (also over land), thus requires
348        code to avoid divisions by zero and catch the case of kLev=Nr.
349      - efficiency of salt_plume_frac is still sub-optimal
350    o tools (genmake2):
351      - fix makefile NAME specification (option: -makefile NAME) by adding
352        "-f $MAKEFILE" in few places where it was missing including makedepend
353        command (contribution from Paul).
354    
355    checkpoint63i (2012/01/24)
356    o model/src:
357      - add factorized versions of some EOS code to find_rho.F,
358        define USE_FACTORIZED_EOS to turn it on (default for TARGET_NEC_SX)
359    o model/src:
360      - add celsius2K to namelist PARM01; remove unused recip_rhoNil from PARAMS.h;
361      - change default celsius2K from 273.16 to 273.15
362      - to keep results unchanged, add back old value of celsius2K in verification
363        exp. input*/data : aim.5l_cs, 1D_ocean_ice_column, lab_sea (fwd),
364         global_ocean.cs32x15(seaice) & cpl_aim+ocn(input_atm).
365    o model/src: add a little initialisation trick to find_rho.F and find_alpha.F
366      to make TAF generate vectorizable code
367    o pkg/seaice/seaice_evp.F: add code (copied from CICE) that avoids underflows.
368       Turn on by defining SEAICE_EVP_ELIMINATE_UNDERFLOWS. Most compilers
369       have flags that do this more efficiently.
370    o pkg/diagnostics/diagstats_calc.F
371      - for TARGET_NEC_SX fix the treatment of the scaling factor tmpFac=scaleFact
372    o pkg/obcs (with exch2):
373      - derive OB indices in overlap region from OB-InsideMask (in obcs_init_fixed.F)
374        and remove code (in obcs_readparms.F) which was based on EXCH of indices
375        (through buffer) and did not account for exch2 (e.g., CS-grid) topology.
376    o pkg/exf and seaice exp:
377      - change offline_exf_seaice.seaicetd test exp. to use default DIFF1 value (=0)
378        so that switching off area & heff advection flags does not affect results.
379      - change default EXF_LWDOWN_WITH_EMISSIVITY to #define in EXF_OPTIONS.h
380      - keep exp. seaice_obcs & 1D_ocean_ice_column(ad) unchanged (using #undef
381        EXF_LWDOWN_WITH_EMISSIVITY) and, using pkg/exf default emissivities, update
382        results of verification experiments: 1D_ocean_ice_column(fwd),
383        global_ocean.cs32x15.seaice(fwd+ad) & seaice_dynmix(ad), lab_sea (all 8)
384        and offline_exf_seaice (all 4).
385    o pkg/seaice:
386      - remove array YNEG, RIVER, TMIX (replaced by local var) from common block;
387        remove also areaNm1 & hEffNm1 when SEAICE_GROWTH_LEGACY is undef.
388      - fix bug: areaNm1 & hEffNm1 are needed in seaice_growth (SEAICE_GROWTH_LEGACY)
389        but were not filled when resp. SEAICEadvArea=F & SEAICEadvHeff=F and
390        not multi-dim advection;
391      - fix seaice_growth.F to compile with both SEAICE_GROWTH_LEGACY and
392        SHORTWAVE_HEATING #undef.
393    o optim: make Makefile more robust (?)
394    o pkg/obcs:
395      * fix treatment of obcs_read_pickup for TAF
396    o pkg/shelfice:
397      * add missing initialisation of num_shifwflx
398      * new adjoint verification exp. for isomip
399      * change Prandtl and Schmidt numbers from generic formulations
400        (in terms of model diffus. and visc.) to separate runtime
401        parameters, with Holland and Jenkins (1999) default values.
402    o pkg/exf (interpolation):
403      - extended input field (2 rows) near the N & S poles:
404        * fill in with the symetric value (when even Nb of data in longitude)
405        * add average value at the poles only for scalar quantities ; for vector
406          component interpolation, skip the averaging and keep duplicated values,
407          unless the 2 components have same location (uvInterp=T) in which case
408          interpolate the 2 components together using S/R EXF_INTERP_UV.
409      - new S/R EXF_INTERP_UV to interpolate the 2 components of a vector field
410        together: this allows to account properly for local orientation when
411        averaging at N & S pole.
412      - add CPP option EXF_USE_OLD_INTERP_POLE to recover old results regarding
413        exf-interpolation near N & S poles. Undef by default.
414      - add debug check/print on 1rst iter if debugLevel >=2.
415    o pkg/exf:
416      - change masking flags definition (no longer "parameter"), put them in
417        common block and set them in S/R EXF_INIT_FIXED.
418      - change recognized masking flag from s,u,v to c,w,s since the mask
419        to use (maskC,W,S) depends on position on model grid and has little to
420        do with scalar/vector difference; fix masking if using P-coordinates.
421      - fix masking of wind-stress (was wrong if interpolated or read on A-grid)
422        and update results of exp. global_with_exf (x2).
423      - fix setting of zenith-angle table when SHORTWAVE_HEATING is undef.
424    o pkg/obcs
425      - S/R obcs_calc_stevens: fix a small bug (gammat -> gammas where appropriate)
426    o pkg/exf (interpolation):
427      - assume periodicity in X only if input field cover full longitude range.
428      - improve search for lat. index (supposed to be faster, in ~log2(ny) steps,
429        and should vectorise).
430      - fix input lat of the 2 added row (in case we provide N.pole data).
431    
432    checkpoint63h (2011/12/30)
433    o pkg/seaice:
434      - change declaration of UVM from _RL to _RS in order to get B-grid
435        uIce,vIce monitor when _RS = real*4
436    o pkg/offline:
437      - new S/R OFFLINE_RESET_PARMS for resetting main-model params (switch off flags);
438      - compute vertical velocity if not read from file (switch on exactConserv
439        & staggerTimeStep);
440      - fix output of ptracer monitor iter & time for default PTRACERS_monitorFreq.
441    o verification:
442      - update grid-files (in tutorial_held_suarez_cs/input and fizhi-cs-32x32x40/input)
443        with grid-angle generated using "utils/matlab/cs_grid/cubeCalcAngle.m":
444        fix Pb in yG definition @ 2 missing corners (previously yG was averaged);
445      - update output of exp. global_ocean.cs32x15.viscA4 after changing
446        grid-file angles (used here for coriolis-3d);
447      - remove (or gzip) few files not needed to run fizhi-cs experiments.
448    o pkg/exf (vector interpolation):
449      - rotate vector component toward local grid-axis orientation using grid-angles
450        (stored in GRID.h) instead of locally computed rotation angle; keep old code
451        available with exf option EXF_USE_OLD_VEC_ROTATION (undef by default).
452    o pkg/seaice:
453      - allow to compile with exf options ALLOW_ATM_TEMP or ALLOW_DOWNWARD_RADIATION
454        undefined. Fix and remove the stop when ALLOW_RUNOFF is undefined.
455    o pkg/PKG_OPTIONS.h files:
456      - move #include "CPP_OPTIONS.h" just after #include "PACKAGES_CONFIG.h",
457        outside of the #ifdef ALLOW_THISPKG / #endif block.
458      - update verification/*/code/PKG_OPTIONS.h files.
459    o add a verification experiment (offline_exf_seaice/input.seaice) that test
460      the B-grid LSOR solver
461    o pkg/seaice: sort out emissivity and long wave radiation step 2:
462      - add emissivity for snow and ice as new run-time parameters
463        (unfortunately) that default to the corresponding exf values; this
464        changes results in most verification experiments so that for backward
465        compatibility these parameter have to be set explicitly to inconsistent
466        values (ugly);
467      - the exf-flag EXF_LWDOWN_WITH_EMISSIVITY then gets rid off the hard-wired
468        emissivities of 0.97 associated with lwdownloc in S/R seaice_solve4temp
469        until we agree how to handle this bug properly
470    o pkg/exf (interpolation):
471      - add a set of run-time param ({inputfield}_interpMethod), one for
472        each interpolated input field, to select the interpolation method
473        with a value of zero switching off the interpolation;
474      - print interpolation parameters to standard output;
475      - refine exf_check.F accordingly ; stop if USE_NO_INTERP_RUNOFF is defined
476        (to use instead runoff_interpMethod=0 in data.exf).
477      - simplify default setting of interpolation parameters (for all fields,
478        set position to match model grid cell-center position, leading to trivial
479        interpolation in case of regular Lat-Lon grid) and fix for the case of
480        non-uniform delY.
481    o pkg/exf/exf_radiation.F: add the factor ocean_emissivity to lwdown, for
482       within #ifdef EXF_LWDOWN_WITH_EMISSIVITY/#endif. Unless ocean_emissivity=1.
483       this factor is absolutely required, because the lw exitance (= out-going
484       long wave radiation) is emissivity*stefanBoltzmann*T^4 + rho*lwdown,
485       where the reflectivity rho = 1-emissivity for conservation reasons. Once
486       this is established, we can remove the CPP-Flag (if we want to).
487    o pkg/seaice:
488      - qualify a stop statement in S/R seaice_check: EXF_READ_EVAP and
489        ALLOW_BULKFORMULAE are only required if SEAICE_EXTERNAL_FLUXES is defined
490      - sort out emissivity and long wave radiation, step 1: make SEAICE_emissivity
491        what the name implies (and not emissivity*BoltzmannConstant), this means
492        the old default value of 5.5e-8 now means
493        5.5e-8/5.670e-8 = 0.97001763668430343479 as ocean_emissivity in
494        S/R exf_readparms
495      - FV-discretization of the B-grid LSOR solver, turn on with
496        SEAICE_LSRBNEW. This new solver also involves a slight re-organization
497        of the calling routine dynsolver, so that B and C-grid code look a
498        little more alike.
499      - fix index bugs in ostres.F (B-grid code)
500    o pkg/seaice/seaice_ocean_budget.F: change (unused) code to make it look better
501    o pkg/seaice/seaice_readparms.F: make ocean_emissivity*stefanBoltzmann the
502      default for SEAICE_emissivity, if useEXF; requires setting a wrong
503      parameter value in global_ocean.cs32x15/input.seaice/data.seaice for
504      backward compatiblity
505    o model/src: use sigmaR in calc_ivdc
506    
507    checkpoint63g (2011/12/16)
508    o pkg/seaice/seaice_growth.F:
509      fix heat conservation of the coupled ocean-seaice system.
510      when SEAICE_HEAT_CONSERV_FIX is defined, the mismatch of
511      solid vs liquid water treatment is resolved via QNET.
512    o pkg/seaice/seaice_growth.F:
513      add missing term for sublimation in saltFlux, which was breaking conservation.
514    o pkg/seaice/seaice_model.F:
515      Remove this patholigical case treatment in evolution branch,
516      where it is un-necessary and breaks conservation.
517      Update global_ocean.cs32x15/results accordingly for
518      output.seaice.txt output_adm.seaice.txt and output_adm.seaice_dynmix.txt
519    o model/src:
520      useRealFreshWaterFlux: remove masking of EmPmP (using maskInC) in
521      external_forcing_surf.F and apply mask directly in S/R SOLVE_FOR_PRESSURE.
522    o pkg/obcs:
523      modify Stevens boundary conditions so that S/R obcs_calc_stevens computes
524      tendency for temperature and salinity that is then applied to update
525      theta and salt in S/R obcs_apply_ts; this requires proper masking of all
526      horizontal advection and diffusion contributions on the boundary (in
527      S/Rs gad_advection, gad_calc_rhs, gmredi_rtransport, gmredi_calc_diff), and
528      removing the mask in S/R timestep_tracer. The advantage of this approach is
529      that the updated tracer values include contributions from the surface
530      forcing and vertical diffusion.
531      This modification changes exp4.stevens because of vertical diffusion.
532    o model/src:
533      change non-curvilinear grid setting to also work with exch2 + blank tiles:
534      - move delX,delY to new header file (SET_GRID.h) and adjust length to 1rst
535        face dimensions.
536      - new S/R INI_LOCAL_GRID to define model tile-local grid (using same units
537        as delX,delY) and called from S/R INI_CARTESIAN_GRID, INI_CYLINDER_GRID
538        and INI_SPHERICAL_POLAR_GRID.
539      change test-experiment global_ocean.90x40x15:
540      - split the domain in many more tiles (9x4 tiles of 10x10 each);
541      - switch to exch2 and remove 1 blank-tile (but only for MPI test).
542      - update results of both test (std & dwnslp).
543    o pkg/diagnostics/diagstat_calc.F: fix problem with non-initialised halos in
544       tmp-fields for TARGET_NEC_SX at the cost of extra loops and less vectorisation
545    o model/src:
546      - take sigma-coords related code out of update_etah.F into new S/R UPDATE_ETAWS
547        and fix initialisation when using sigma-coords.
548    o model/src:
549     - improve Gael's changes from Jan 14, 2011 "addition of an 'update' of hfacc etc.
550       to their current value at the beginning of forward_step.F": add a new run-time
551       switch "doResetHFactors" (default=false) and use it to do (or not) the resetting.
552     - set doResetHFactors=T in the following test exp:
553        global_ocean.90x40x15/input (rStar) & input.dwnslp (linFS),
554        global_ocean.cs32x15/input.seaice (rStar), hs94.cs-32x32x5/input.impIGW (linFS)
555        and tutorial_global_oce_in_p (nonLinFS in p)
556    o pkg/ecco
557      - added IES cost term
558    o verification/advect_xz
559      - scale down the depth by 1/100 (from 200 km to just 2.km)
560      - add secondary test using divergent flow, r-star and implicit vertical advection.
561      - add note (check_conserve_TS.txt) and matlab script to check global
562        conservation of T & S with NonLin-FreeSurf and Adams-Bashforth.
563    o pkg/rbcs:
564      - add missing relaxUFile & relaxVFile in namelist (in rbcs_readparms.F).
565    o pkg/obcs (Stevens BCs):
566      - fix various problems in the phase speed computations of the Stevens
567        boundary conditions:
568        - sign error for western and southern boundaries,
569        - time tendencies were underestimated by factor of dTracerLev and some just
570          zero (for multidim advection schemes) -> now estimate time tendencies
571          from difference between previous (n) time level and the one before (n-1);
572          this requires storing a field per tracer per boundary, also in the pickup
573          files.
574        - replace deltaTmom in cflMer/Zon computation with dTracerLev
575        - set default phase velocity to cflMer/Zon
576      - update verification experiment exp4.stevens
577    o pkg/generic_advdiff (implicit_r):
578      - fix implicit vertical advection conservation with AB and/or NonLin-FreeSurf
579        (remove Tr*d/dz(w) in gad_implicit_r.F and add it in gad_calc_rhs.F);
580      - fix implicit vertical diffusion or advection with NonLin FreeSurf
581        (was using current recip_hFacC instead of future recip_hFacC): set future
582        recip_hFac in thermodynamics.F and pass & use it in all vertical implicit
583        solver S/R ;
584      - fill diagnostics of vertical advective fluxes (computed from tendency)
585        when using implicit vert. advection;
586      - update output of exp that uses NonLin-FreeSurf & implicit vertical diffusion:
587         global_ocean.90x40x15 (fwd+AD), global_ocean.cs32x15 (4 fwd +4 AD),
588         tutorial_global_oce_in_p (fwd), tutorial_tracer_adjsens (AD)
589         and cpl_aim+ocn (used in ocean); to be fixed: bottom_ctrl_5x5.
590    o pkg/diagnostics:
591      - add diags for T & S tendency which goes through Adams-Bashforth.
592    
593    checkpoint63f (2011/11/30)
594    o pkg/obcs/obcs_calc_stevens.F:
595      - join some loops to reduce number of if-statements
596      - fix a bug in code for northern and southern boundaries.
597    o pkg/seaice/seaice_init_varia.F
598      - undo resetting UVM=0 that has slipped in unnoticed in r1.49 and
599        caused zero ice-velocities for the B-grid code
600    o pkg/seaice/seaice_init_fixed.F
601      - fix a bug in the initialisation of the second metric terms
602        k2AtC and k2AtZ: k2AtC was set to the value of k2AtZ and k2AtZ was 0.
603      - this affects all seaice configurations with useCurviLinearGrid = .true.
604        and SEAICEuseDynamics = .true. (default) and SEAICEuseMetricTerms
605        = .true. (default)
606      - the only verification experiment affected is global_ocean.cs32x15:
607        icedyn, seaice, and seaice_dynmix (AD)
608    o pkg/thsice/thsice_diagnostics_state.F
609      - only for TARGET_NEC_SX: initialise all of tmpFld, so that overlap does
610        not contain garbage that can lead to surprises in diagstats_calc.F
611    o model/src:
612      - move bi,bj loops inside INTEGR_CONTINUITY ;
613      - call INTEGR_CONTINUITY directly from forward_step.F
614        (previously called from momentum_correction_step.F)
615      - call UPDATE_ETAH from integr_continuity.F and update initialise_varia.F,
616        forward_step.F and pkg/ecco/the_main_loop.F
617    o model/src/do_oceanic_phys.F:
618      - reset addMass to zero only if useICEFRONT ;
619      - separated k-loop for rhoInSitu calculation ;
620      - add 2 diagnostics for wVel*delta^k(Rho) at constant pressure (= WdRHO_P)
621        and at constant T,S (= WdRHOdP);
622      NOTE: change diagnostics WRHOMASS : this is now simply the Vertical transport
623        of In-Situ Density (Anomaly) (=wVel*rho^bar-k) (previously was Vertical
624        transport of locally-referenced potential density);
625        to recover old diag: (WRHOMASS)_old = (WRHOMASS)_new -1/2 * (WdRHOdP)
626    o gluemnc:
627      - replace ncrcat with ncks when adding variables to *.glob.nc
628      - change the way variables without record dimensions are handled so that
629        files that have variables with and without record variables can be glued:
630        add a record dimension with a new unique name to be able to differentiate
631        between variable with and without a-prior record dimensions. Remove
632        this record dimension before adding the variable to the *.glob.nc file.
633        This procedure automatically works also for grid.*.nc files that do not
634        have any record dimension.
635    o verification/cpl_aim+ocn:
636      - generate new reference output on baudelaire (gfortran, mpich2) (previously
637        from old aces-grid cluster, ao + ifort) and update 'run_cpl_test' script.
638    o pkg/obcs/obcs_calc_stevens.F:
639      - add code for northern and southern boundaries.
640      - reorder some loops to save some operations and so that drFBar can be scalar
641    o model/src:
642      - re-arrange extrapolation calculation in Adams-Bashforth S/R (affects machine
643        truncation) and add diagnostics for Adams-Bashforth tendency increment.
644      - update test-exp. AD output:
645        1D_ocean_ice_column, bottom_ctrl_5x5, lab_sea.noseaicedyn, obcs_ctrl;
646      and FWD output: exp4 (x3), fizhi-cs-32x32x40, fizhi-cs-aqualev20,
647        front_relax (x3), global_ocean.90x40x15 (x2), global_ocean.cs32x15 (x5),
648        global_ocean_ebm, ideal_2D_oce, internal_wave, isomip (x3), lab_sea (x4),
649        matrix_example, MLAdjust (x5), natl_box (x2), tutorial_advection_in_gyre,
650        tutorial_global_oce_in_p, tutorial_global_oce_latlon and
651        tutorial_plume_on_slope.
652    o pkg/diagnostics/diagstats_calc.F: add special code for TARGET_NEC_SX
653      that vectorises. This code uses 3 extra 2D fields, F90 array assignments
654      and F90 intrinsic routines SUM, MINVAL, MAXVAL, but since TARGET_NEC_SX
655      does not even come with an F77 compiler anymore, this should not be
656      a limitation
657    
658    checkpoint63e (2011/11/06)
659    o pkg/seaice adjoint of LSR:
660      - substantially rework STORE dirs.
661      - add new flag SEAICE_LSR_ADJOINT_ITER and parameter SOLV_MAX_FIXED
662        this flag will do SOLV_MAX_ITERS but only store SOLV_MAX_FIXED fields
663        and only perform SOLV_MAX_FIXED adjoint iters.
664        If flag SEAICE_LSR_ADJOINT_ITER is undef-ined, the store in the iteration
665        always goes to same record, meaning that the last forward field will be
666        the one used in the adjoint - an approximation.
667      - now produces non-zero LSR-related gradients, and acceptable gradients for
668        An's zonal (x-z) test case (to be checked in)
669      - lab_sea: produces acceptable gradients for lab_sea with forward/backward LSR
670        (but these are screwed up by the thermodynamics in the first place);
671        reduce from 4 to 3 timesteps to avoid t.d. issue as temporary solution;
672        output_adm.txt also reflects changes to seaice_lsr
673      - global_ocean.cs32x15:
674        * the "default" input_ad.seaice has been re-defined to always exclude dynamics
675          (output_adm.seaice.txt was updated)
676        * new input_ad.seaice_dynmix tests a forward LSR / backward free-drift
677          (output_adm.seaice_dynmix.txt)
678    o test-exp. exp4+stevens:
679      - switch off pTracers and nonHydrostatic (restart problems with NH); update output
680    o pkg/seaice (lsr solver):
681      - put coriolis term into FORCEX,Y (as in seaice_evp.F; previously in rhsU,V only);
682        update output (change truncation) of FWD test exp lab_sea & global_ocean.cs32x15
683      - fix SEAICEuseFREEDRIFT for new OBCS version (ndef OBCS_UVICE_OLD)
684      - new parameter "LSR_mixIniGuess" allows (if=2,4) to mix free-drift solution
685        into initial guess for linearised solver; use weight ~ (1/err)^2,4.
686      - compute (with new S/R) and print initial (+ free-driff sol. if available)
687        and final residual of linearised system.
688    o pkg/pp81: add diagnostics for vertical eddy viscosity and diffusivity
689      (requires new subroutines pp81_init_fixed.F/pp81_diagnostics_init.F)
690    o pkg/obcs: Stevens BCs (still only for east and west)
691      - fix Stevens BCs by using intermediate velocities of previous
692        time step as "baroclinic" contribution rather velocity of one grid cell
693        inside the boundaries; more consistent but makes the entire treatment
694        more complicated, requires new pickup files and two new S/Rs:
695        obcs_copy_uv_n and obcs_save_uv_n
696        keep old version with flag OBCS_STEVENS_USE_INTERIOR_VELOCITY
697        (undefined by default)
698      - silently move computation of some grid factors into separate loops to
699        save some recomputations
700      - add a hack for non-linear free surface
701      - add a verification experiment to exp4 that tests this code
702    o make gluemnc/xplodemnc work with (moron) non-GNU shell tools
703    
704    checkpoint63d (2011/10/25)
705    o pkg/obcs + seaice-dynamics:
706      - new implementation calls OBCS_APPLY_UVICE (in seaice_dynsolver.F) before
707        solving for uIce,vIce and prevent SEAICE_LSR or SEAICE_EVP to modify OB
708        values (consistent with an implicit method).
709      - add option OBCS_UVICE_OLD (in OBCS_OPTIONS.h, defined by default) to
710        return to older implementation (same results as before); note that none of
711        the "experimental" OBCS_SEAICE options are implemented in the new version.
712      - switch test exp. seaice_obcs to use new version (update output).
713    o pkg/seaice:
714      - add few stop (B-grid & CS-exch, B-grid & obcs, AUTODIFF & SEAICE_maskRHS)
715      - add parenthesis in Water-Ice drag calculations (evp & lsr);
716      - in seaice_lsr.F, simplify and fix AA3 setting in case sNx or sNy=1;
717        and fix case SEAICE_waterDrag=0 (but unstable if no or little seaice)
718      - update output of test exp lab_sea that uses evp or lsr (fwd+ad)
719        and global_ocean.cs32x15 (icedyn & seaice fwd+ad).
720    o pkg/layers:
721      - Include potential density as new coordinate (Thanks to David Munday)
722    o pkg/dic:
723      - Remove subroutine CALC_PCO2_APPROX_CO3 from carbon_chem.F and add
724        carbonate computation/output to CALC_PCO2_APPROX
725    o pkg/generic_advdiff
726      - make TAF generate code that vectorizes:
727        gad_dst3fl_adv_*.F, gad_u3c4_impl_r.F
728    o model/src:
729      - improve vectorization also for adjoint code of
730        solve_tridiagonal and solve_pentadiagonal. As this requires up to
731        5 new 3D-fields, this code is only turned on for the combination of
732        ALLOW_AUTODIFF_TAMC and TARGET_NEC_SX. Also remove error message
733        for singular matrix check (only for TARGET_NEC_SX).
734      - remove hard-wiring of CPP-flag ALLOW_SOLVERS_KLOOPINSIDE to
735        ALLOW_AUTODIFF. This flag now needs to be set outside of
736        solve_tri/pentadiagonal.F
737    o pkg/exf:
738      - fix previous modif in exf_readparms.F (revision 1.66: treatment of
739        optional namelist EXF_NML_OBCS).
740      - add many debug-print (to trace down where pkg/cal error msg comes from)
741    o pkg/mom_vecinv/mom_vi_hdissip.F
742      - rearrange loops so that vectorization is improved and in particular
743        the adjoint routine vectorizes. The code is a little longer now, but I
744        think easier to read.
745        Note: CPP-flag MOM_VI_ORIGINAL_VISCA4 is not tested.
746    o pkg/seaice:
747      - allow to specify initial seaice velocity from files (uIceFile,vIceFile)
748    o pkg/exch2:
749      - alternative code (without tile x tile matrix) for cumulated (global) sum;
750        used as default; keep using matrix version in adjustment.cs-32x32x1.
751    o tools/build_options:
752      - after merging some MPI and/or multi-threads specific optfiles so that
753        the modified default optfile support both built (using genmake2 -mpi
754        for the MPI built, using genmake2 -omp for OpenMP built),
755        move now obsolete optfiles to tools/build_options/unsupported/
756       (add copy of email sent to support list in doc/optfiles_changes.txt)
757    
758    checkpoint63c (2011/09/28)
759    o pkg/ebm:
760      - fix ebm_zonalmean.F for several procs in Ydir (nPy > 1); update output of
761        test exp. global_ocean_ebm (affects machine truncation, 12 digits for cg2d)
762    o pkg/seaice (SItracer pickup)
763    * Simple code for pickup of SItracer fields (#define ALLOW_SITRACER)
764      To be done:
765      - thorough testing of missing fields in S/R seaice_read_pickup
766      - thorough matching between generic tracers and specific fields used
767        (e.g. volume-weighted age, area-weighted age, salinity, ...)
768    o pkg/grdchk:
769      - all procs calculate and print finite-difference gradient (for testreport)
770      - change description output used by testreport;
771      - AD testing: also compare and report Finite-difference gradient;
772        => update all output_adm*.txt
773    o test exp. global_ocean_ebm:
774      - switch back useRealFreshWaterFlux (no problem anymore with run-off);
775        and turn on exactConserve; update (fwd) output.
776    o pkg/seaice (LSR):
777      - print to STDOUT number of solver iterations at SEAICE_monFreq interval.
778      - modify solver to deal cleanly with u/v switch at face edges (CS-grid):
779        * identical results with non-CS topology (but save up to half of EXCH calls)
780        * no much changes in cs-32 verification tests since no ice at face edges
781         (differences due to convergence criteria, since nb of iterations changed)
782        * expect some differences on lat-lon-cap grid.
783        update FWD results of global_ocean.cs32x15 test exp. (icedyn & seaice)
784    o pkg/exch2:
785      - add new CPP option to disable Cumul-Sum matrix (to save storage when using
786        many tiles); until alternative coding is added, just add a stop.
787    o pkg/kpp:
788      - move ptracer/salt correction to KPP diffusivity from calc_3d_diffusivity.F
789        to S/R KPP_CALC_DIFF_PTR (+ add tracer-index to argument list).
790    o optfiles:
791      - merged few MPI specific (*+mpi*) and multi-threads specific (*+mth) optfiles
792        into corresponding standard one, which now support different build:
793        (when using "genmake2 -mpi" for MPI built, "genmake2 -omp" for OpenMP built)
794      - add "darwin_amd64_gfortran" optfile (initially from Constantinos, tested by Gael)
795    o pkg/obcs (seaice):
796      - add missing EXCH for uIce,vIce after applying OBCS;
797      - remove S/R EXF_SWAPFFIELDS_X/Y , disable S/R EXF_SET_OBCS_X/Y by adding
798        argument = number of levels to S/R EXF_SWAPFFIELDS_XZ/YZ and S/R
799        EXF_SET_OBCS_XZ/YZ ; update obcs_exf_load.F;
800      - fix EXF_SET_OBCS_XZ/YZ for multi-threaded (assuming loaded arrays are shared)
801      - verification exp. seaice_obcs: split domain in 2 tiles ; add SIZE.h_mpi
802        and eedata.mth for MPI and mutlti-threaded testing.
803    o pkg/flt:
804      - make FLT EXCH working with multi-threads (and MPI + multi-threads);
805      - use buffer for floats IO (trajectories & profiles); size set in FLT_SIZE.h;
806      - fix pickup and trajectories + profiles output with multi-threads;
807      - add parameter to select group of fields to write along trajectory and
808        profile (default unchanged);
809      - only call PORT_RAND* function when flt_noise <> 0;
810      - add multi-threaded test for verification exp. flt_example.
811    o eesupp/src:
812      - fix S/R ALL_PROC_DIE for MPI+multi-threads.
813      - USE_OMP_THREADING: check that number of threads (from eedata) matches
814        actual number (from env.var. setting).
815    o pkg/ebm:
816      - fix multi-threading in ebm_area_t.F ; clean-up EBM.h header file.
817      - add multi-threaded test for verification exp. global_ocean_ebm
818    
819    checkpoint63b (2011/08/29)
820    o pkg/ebm:
821      - fix sign of runoff;
822      - update directly forcing fields (Qnet,EmPmR) to use standard
823        external_forcing_surf.F (remove ebm_forcing_surf.F);
824      - avoid loading forcing fields a 2nd time (1rst time from ini_forcing.F);
825      - set either tauThetaClimRelax (in data) or tauThetaZonRelax (in data.ebm)
826        and apply relaxation towards corresponding SST field (2-D map or ZonAver).
827      - update global_ocean_ebm parameters file data and update output (fwd+ad).
828    o verification/matrix_example:
829      - split domain in 8 tiles (2x4); add SIZE.h_mpi and eedata.mth for
830        MPI and mutlti-threaded testing.
831    o pkg/matrix:
832      - change name of S/R MATRIX_INIT to S/R MATRIX_INIT_VARIA ;
833      - fix for multi-tiles (add bi,bj indices to exp/impMatrixCounter);
834      - fix for multi-threaded (remove DATA statement);
835      - use standard DIFFERENT_MULTIPLE function;
836      - add MATRIX_OPTIONS.h
837    o verification/matrix_example:
838       To allow to split the domain in several tiles, change the domain size
839        from 31x31 to 32x32 by adding 1 row (on Southern side) + 1 column (on
840        Western side) of land points.
841    o (*_)write_pickup:
842      - fix few bugs in mypackage_read/write_pickup.F
843      - in MDS_WR_METAFILES calls, replace "myTime" by a local copy into
844        array of length 1 (was caught by compiler syntax-check).
845    o pkg/diagnostics (velocity potential solver):
846      - fix initialisation of main diagonal matrix (for overlap values)
847    o tools/build_options:
848      - towards single optfile for MPI and non-MPI built: merge few +mpi optfile
849        into previously non MPI one (linux_am64 pgf77,open64,pathf90,ifort11)
850      - linux_amd64_gfortran: merge +mpi_generic version into standard optfile:
851        * move IEEE flags to DEVEL section; take IEEE flags from +mpi_generic ;
852        * FAST case: for now, keep -O3 with ini_masks_etc.F in NOOPTFILES list;
853        and use "-devel" testreport option for standard testing on baudelaire.
854    o pkg/grdchk:
855      - Assume that all gradient-check position are within the same tile
856        corresponding to global indices (iGloTile,jGloTile) and that
857        positions (i,j indices or nbeg) are local to this tile;
858      - set tile local-indices and proc. number according to tile global-indices;
859      - remove grdchkwhichproc from namelist (retired param);
860      - send adjoint gradient to all procs so that all procs print it to STDOUT;
861      - switch on MPI test for global_ocean.90x40x15 AD test experiment.
862    o adding package bbl (Bottom Boundary Layer)
863      description in MITgcm/pkg/bbl/bbl_description.tex
864      example/test experiment in MITgcm_contrib/bbl
865    o adjoint verifications
866      - changed 5 experiments to multi-tiles
867        * global_ocean.90x40x15
868        * obcs_ctrl
869        * offline_exf_seaice
870        * tutorial_dic_adjoffline
871        * tutorial_tracer_adjsens
872        changed reference output for those that crossed tile boundaries
873        (changed choices of gradient check positions)
874      - with same tiling, switch on MPI test for the last 4 (add SIZE.h_mpi)
875      - temporary bug fix in grdchk_loc.F for obcs
876    o genmake2 & testreport
877      - add target "obj" (just for OBJFILES files) to Makefile;
878      - add option to specify FEXTRAFLAGS on command line.
879    o pkg/mypackage:
880      - remove bi,bj arguments from argument list of S/R MYPACKAGE_CALC_RHS
881    
882    checkpoint63a (2011/08/02)
883    o pkg/diagnostics (velocity potential):
884      - fix velocity-potential calculation when using OBCS: balance net inflow
885        at each level (new S/R OBCS_DIAG_BALANCE).
886      - fix some of the problems with OBCS in stream-function calculation.
887    o pkg/exf/exf_readparms.F
888      - make treatment of optional namelists (EXF_NML_04, EXF_NML_SGRUNOFF,
889        EXF_NML_OBCS) more consistent, so that you need not have these lists
890        in data.exf when they are not used.
891    o optim/optim_readdata.F:
892      - add some output about obcs variables that might help debugging
893      - add a check about nvarlength
894    o pkg/ctrl: once again, fix computation of endrec in s/r ctrl_init_rec
895    o pkg/diagnostics (velocity potential):
896      - fix mask for OBCS (still problems in stream-function with OBCS);
897      - add specific parameter (default = main code CG2D params) for solver;
898      - in case of poor convergence, use solution corresponding to lowest residual.
899    o pkg/seaice/seaice_growth.F: small changes that permit vectorizable
900      adjoint code. In general statements like tmpscal=fld(i,j) are problematic
901      and should be avoided where possible.
902    o model/src (rStar):
903      - include r* effect on reference-state (PhiRef) in totPhiHyd
904        (so that it's really the potential anomaly at the cell center);
905        affect solution only if z* with full pressure in EOS.
906      - test-exp global_ocean.90x40x15: reduce viscA4 (was not stable) and
907        update output (because of z* in totPhiHyd and viscA4 changes);
908      - keep the previous diagnostics as "PHIHYDcR" (closer to potential anomaly
909        @ constant r) until interpolation at constant r is implemented.
910    o pkg/diagnostics
911      - fix RCENTER diagnostics in case cell center is not at interface middle
912    o add code for TEOS-10 (www.teos-10.org, McDougall et al. 2011). Use
913      this eos with eosType = 'TEOS10', in data (PARM01). This eos implies
914      that THETA and SALT are "conservative temperature" and "absolute
915      salinity"
916    o pkg/ctrl
917      - fix computation of endrec in s/r ctrl_init_rec
918      - ctrl_pack/unpack_*: remove unused variables and some obsolete code
919    o pkg/seaice/seaice_growth.F
920      - fix recomputation with FENTY_AREA_EXPANSION_CONTRACTION code,
921        remove then obsolete STORE directives
922      - fix STORE directives for tice and tices, so that only the
923        appropriate part of the fields are stored (and not the entire
924        field); update global_ocean.cs32x15.seaice AD output.
925      - cosmetic changes: adjust CPP flags and indentation for better
926        legibilty
927    o pkg/autodiff: add mnc-output of adBottomDragFld (code contributed by
928      Chris Wilson)
929    o pkg/gmredi:
930       Add Sub-Meso Eddies parameterisation from Baylor (for now, disabled with TAF),
931       and test it in verification exp. "front_relax.bvp" (update output.bvp.txt)
932    
933    checkpoint63  (2011/07/11)
934    o pkg/exch2:
935     - rename+move: nTiles in W2_EXCH2_PARAMS.h --> exch2_nTiles in W2_EXCH2_TOPOLOGY.h
936     - exch2 version of Cumul-Sum routine: S/R W2_SET_MAP_CUMSUM set up the
937       (2*nTiles)x(nTiles) Cumul-Sum matrix and Master Proc collects all tiles X,Y
938       increments, calculates Cumul-Sum @ tile origin and sends results to each tile.
939    o pkg/diagnostics:
940     - deal with pairs of post-processed diags which are computed together; in
941       particular, re-order list of diags within 1 file to save 2nd computation.
942     - add S/R to compute velocity stream-function (called after velocity-potential
943       calculation) from divergence free transport -> new diagnostics "PsiVEL".
944     - add parameter to select grid-point location where PsiVEL == 0.
945    o eesupp/src:
946       new S/R to calculate cumulated sum on tiled array, corner grid-cell location
947       (specific S/R needed with exch2 topology - for now, just print an error msg)
948    o pkg/shelfice
949     - Implement friction velocity-dependent transfer coefficients following
950       Holland and Jenkins, JPO, 1999
951       Original code by M. Losch with small modifs.
952       Enable with CPP option SHI_ALLOW_GAMMAFRICT
953       and runtime flag SHELFICEuseGammaFrict
954    o verification lab_sea & global_ocean.cs32x15:
955     - use tools/xmakedepend (instead of cyrus_makedepend, in genmake_local):
956       does not miss some dependencies (but is slower) and also works with many files
957       (default makedepend limitation for AD built).
958     - use cyrus_makedepend in adjustment.128x64x1 (so that it still tested).
959    o pkg/diagnostics:
960     - add run-time parameter "useMissingValue" (def=False) to fill land-point
961        (i.e., where mask=0) with MissingValue ; used only in MNC output file.
962       This replaces CPP-option DIAGNOSTICS_MISSING_VALUE.
963     - Extend the use of "missing_value" setting from data.diagnostics for the case
964       of counter-diagnostics (where fraction-weight is zero). This applies both to
965       MNC and MDS output files.
966    o pkg/seaice/seaice_growth.F:
967      - add 'a priori' cap of latent heat flux based on actual mass considerations
968        when SEAICE_ADD_SUBLIMATION_TO_FWBUDGET is used in conjunction with the
969        non-legacy seaice_solve4temp.
970      - add diagnostic of the residual sublimation freshwater flux (the freshwater
971        flux taken from the ocean if the total actual latent heat fluxes exceed
972        the maximum)
973      - remove the CPP switch around the *_FWbySublim unit change and move diagnostic
974       fill for SIatmQnt, SIfwSubl, SIatmFW to the end of seaice_growth.F.
975      - add diagnostic of the actual sublimation freshwater flux (that is 0. ifndef
976       SEAICE_ADD_SUBLIMATION_TO_FWBUDGET) and of the latent heat flux (evap+sublim).
977      - bug fix : frWtrAtm needs a_FWbySublim ifdef SEAICE_ADD_SUBLIMATION_TO_FWBUDGET.
978      - bug fix : missing part to Martin's r_FWbySublim pathological case fix.
979    o verification 1D_ocean_ice_column:
980       made model domain truly 1x1x23 instead of 5x5x23 with only center cell (3,3,:) wet
981       update results
982    o pkg/diagnostics:
983     - Implement setting of "Post-Processed" diagnostics (corresponding to gdiag(5)='P')
984       which are not filled-up but computed from other diags ; In this case, the mate
985       diag points to the primary (filled-up) diag to used for post processing.
986     - Update Velocity-potential computation using post-processed diag framework.
987     ==> Change the ordering of fields and time-periods in MDS output file
988       when using periodic averaging: now writes one time record with the full set
989       of fields for this time period, then the next time reccord (it used to be
990       one field with the full set of time records then the next field).
991         Note: this is now similar to NetCDF (MNC) output file. <==
992    
993    checkpoint62z (2011/06/21)
994    o adjoint monitor:
995     - Add adjoint monitor output for packages exf, seaice
996       and update relevant testreport output
997    o pkg/seaice:
998     - re-order diags inits so that they appear in order in available_diagnostics.log
999     - added diags: hsnow thermo. rates of change, area preceeding ridiging process,
1000       area/heff/hsnow preceeding thermodynamic growth/melt.
1001     - modified diag: SIdA; output actual effect, as the description states.
1002     - modified description: SIqneti, SIqneto, SIuheff, SIvheff, SIdAb*, HSNOW.
1003     - retired redundant diags: SIyneg, SIfice, SIsnwice, SIthdgrh.
1004       (SIyneg->SIdHbOCN; SIfice->SIdHbATC; SIsnwice->SIdHbFLO;
1005        and SIthdgrh->SIdHbOCN+SIdHbATC+SIdHbATO)
1006     - modified diags (2) : switch all SIdA*, SIdH*, SIdS* from delta to rates.
1007     - added diagnostics for seaice generic tracers (SItr*).
1008     - added SItrUnit and SItrNameLong run time param (for SItr* diags).
1009     - in diag names, replaced 'PrTh' abbrev. of 'preceeding thermo' with 'PT'.
1010     I. Fenty: 18-Jun-2011:
1011     Minor changes to seaice package:
1012     1) Retired old variables (A22, SEAICE_lhsublim, areaMax, areaMin, hiceMin) and
1013        added some new ones (SEAICE_area_reg, SEAICE_hice_reg, SEAICE_area_floor)
1014       - Differentiated "regularization variables" from "floor variables"
1015        * areaMin became SEAICE_area_reg (old A22) and SEAICE_area_floor
1016        * hiceMin became SEAICE_hice_reg (old hiceMin)
1017          (with _reg meaning regularization variable)
1018       - SEAICE_lhSublim becomes lhSublim, the sum of SEAICE_lhEvap and SEAICE_lhFusion
1019        so as to ensure energy conservation when going between phases
1020      - A22 was not used anywhere
1021     2) Changed regularization procedure for heffActual and hsnowActual to ensure
1022        well-boundedness and smooth adjoint in seaice_growth.F
1023     3) Fixed a bug where seaice_solve4temp would not recognize ice-free grid cells
1024        because the old regularization always set heffActual >= 0.05 cm
1025     4) Changed the model so that the default behavior is to put a small (10^-5) "floor"
1026        on AREA when HEFF > 0.
1027      - went from requiring ALLOW_PRECLUDE_INFINITESIMAL_AREA to be defined to
1028        requiring that DISABLE_AREA_FLOOR *not* be defined
1029     Affected verifications:
1030      - 1D_ocean_ice_column (output.txt output_adm.txt)
1031      - global_ocean.cs32x15 (output.seaice.txt output_adm.seaice.txt)
1032    o pkg/diagnostics:
1033      - move MNC code from diagnostics_out.F into new diagnostics_mnc_out.F (2 S/R).
1034      - rename S/R GETDIAG to DIAGNOSTICS_GET_DIAG and change type of 1rst argument
1035        (was _RL, now integer) with option = 0 to retrieve all levels.
1036      - add pieces of code to compute velocity potential at each level (new diagnostics
1037        PhiVEL, works only when UVELMASS & VVELMASS are also turned on);
1038        for now, using same params as CG2D (target-resisual, max Nb of iter ...).
1039      - fix few issues with counter diagnostics in diagnostics_setdiag.F &
1040        diagstats_setdiag.F (if diagnostic counter is itself a counter diag)
1041        and in diagnostics_fract_fill.F (do not need a valid pointer for the
1042        diagnostics counter-mate); check that definition of counter-diagnostic
1043        includes a valid counter-mate (in diagnostics_set_levels.F).
1044    o model/src (rStar):
1045      - add rStar scaling factor in diags_phi_hyd.F (similar to calc_grad_phi_hyd.F);
1046        affect solution only if z* with full pressure in EOS;
1047        update output of test-exp global_ocean.90x40x15.
1048    o pkg/seaice:
1049      - introduce siEps=1e-5 parameter
1050      - use areaMax in AREA update (part 4), consistent with ridging step (part 2.5).
1051      - re-organize SEAICE_ADD_SUBLIMATION_TO_FWBUDGET code.
1052      - introduce ALLOW_SITRACER and seaice_tracer_phys.F to handle generic seaice tracer.
1053        For now it covers, and was tested for, ice salinity and age (attached to HEFF),
1054        as well as ice cover age and ridging index (attached to AREA).
1055        For now the run time parameters (in data.seaice/SEAICE_PARM03) are
1056        SItrName (e.g. 'age') and SItrMate ('HEFF', which is the default, or 'AREA').
1057        Up to SItrMaxNum=3 tracers can be used simultaneously.
1058    o pkg/salt_plume:
1059      -introduce SPsalFRAC run time parameter that sets the fraction of the
1060       salt by-product of ice growth (SPsalFRAC*(1-SIsalFRAC)*salt typically)
1061       that gets vertically redistributed (fluxed down) by pkg/salt_plume.
1062    o model debug options:
1063      - Switch reading of debugMode from S/R INI_PARMS (parameter file "data", stored
1064        in PARAMS.h) to S/R EESET_PARMS (parameter file "eedata", stored in EEPARAMS.h).
1065      - Refine debug-msg printing selection (3 new levels):
1066        debugMode  : controls printing of debug messages (sequence of S/R calls).
1067        debugLevel : controls printing of algorithm-relevant auxiliary/debug messages
1068         debLevZero =  0 ; /* level of disabled aux. msg printing */
1069         debLevA =  1 ; /* level of minimum  aux. msg printing */
1070         debLevB =  2 ; /* level of low aux. print (report read-file opening)*/
1071         debLevC =  3 ; /* level of moderate debug prt (most pkgs debug msg) */
1072         debLevD =  4 ; /* level of enhanced debug prt (add DEBUG_STATS prt) */
1073         debLevE =  5 ; /* level of extensive debug printing */
1074        New debugLevel default: with default debugMode value (=F),
1075          = 2 (debLevB) or = 1 (debLevA) in case ALLOW_AUTODIFF is defined.;
1076          and if debugMode=T, default debugLevel = 4 (debLevD).
1077        Relation with previous settings:
1078         debLevB (=2) corresponds to former debLevA (=1)
1079         debLevD (=4) corresponds to former debLevB (=2)
1080        Note:
1081         a) if debugLevel=0, skip WRITE_GRID call when nIter0 > 0 (same as before);
1082         b) default debugLevel=1 is convenient in AD runs (avoid many file opening msgs);
1083            to recover previous default, set debugLevel=2 (e.g. AD-test hs94.1x64x5)
1084      - Add new parameter (printResidualFreq, read from PARM02 namelist) to print
1085        detailed CG solvers convergence; off (=0) by default, except if debugLevel=5.
1086    o pkg/obcs:
1087      - change OBCSfixTopo default from True to False (should not change the results);
1088        keep OBCSfixTopo=T in verification-exp. seaice_obcs.
1089    o pkg/thsice:
1090      - fix bug in thsice_calc_thickn.F (was introduced in version 1.18) in
1091        2nd layer seaice sublimation (unlikely to happen)
1092      - use Interior mask for OBCS in thsice_advection.F (similar to what is
1093        done in gad_advection & seaice_advection).
1094    o adjoint:
1095      bug fix spotted by Gael Forget:
1096      seaice_advection and thsice_advection still had
1097      legacy CPP options to avoid CS corner updates for adjoint
1098    o pkg/seaice:
1099      => Change some of the defaults (2011/05/29):
1100         - change SEAICEuseFluxForm default (from False to True)
1101         - change DIFF1 default (from 0.004 m/s to 0. m/s)
1102         And print warnings if DIFF1 is not set in data.seaice and centered
1103          avection scheme is used without any diffusion.
1104      also:
1105      - fix seaice_diffusion calls in default AdvScheme part of seaice_advdiff.F;
1106      - set SEAICEdiffKh[] default in the same way as SEAICEadvSch[]
1107      - stop if DIFF1<>0 with SEAICEadvScheme <> 2, if DIFF1<>0 with any
1108        other non-zero SEAICEdiffKh[] diffusivity, if SEAICEadvSalt=T with
1109        #undef SEAICE_VARIABLE_SALINITY, if SEAICEadvAge=T with #undef SEAICE_AGE.
1110      update results of test exp.:
1111         lab_sea: output.fd (switch to AdvScheme=33 with diffKh=20)
1112             output.hb87, output_adm.evp (SEAICEuseFluxForm=T and diffKh=200)
1113             output_adm.noseaicedyn (SEAICEuseFluxForm=T)
1114         offline_exf_seaice: output.seaicetd, output_adm (SEAICEuseFluxForm=T)
1115         seaice_obcs: output (SEAICEuseFluxForm=T)
1116      and prescribe old default for SEAICEuseFluxForm (=F) and DIFF1 (=0.004)
1117          for standard fwd & AD lab_sea tests (to keep the same output).
1118    o pkg/seaice/seaice_growth.F:
1119      - use Ian Fenty's capping formulas for actual ice
1120      thickness thoughout EVOLUTION branch.
1121      - put treatment pathological case #2) in CPP brackets
1122      (ALLOW_AVOID_INFINITESIMAL_AREA, undef by default).
1123      - update global_ocean.cs32x15 and 1D_ocean_ice_colum results accordingly.
1124    o pkg/seaice:
1125      - seaice_diffusion.F : remove the min(DX,DY) factor permanently;
1126      pass the Laplacian diffusivity (in m^2/s) diffKh as a parameter;
1127      also pass fac as a param, which can be 1. (to update the tendency
1128      field) or the time step (to update the field itself).
1129      - seaice_advdiff.F: for multidim, call seaice_diffusion with
1130      e.g. SEAICEdiffKhHeff and with fac=1; for single-dim, call
1131      seaice_diffusion with e.g. SEAICEdiffKhHeff and with fac=time step.
1132      - SEAICE_PARAMS.h, seaice_readparms.F, seaice_check.F :
1133      hooks to handle SEAICEdiffKhHeff, SEAICEdiffKhArea, etc.
1134    o pkg/seaice:
1135      diffusion with centered advection scheme (diffus.F & advect.F):
1136      - simplify S/R DIFFUS (put deltaT & DIFF1 factor outside, move EXCH outside)
1137        to just compute the laplacian of input-field.
1138      - unroll k loop (harmonic,biharmonic diff) in advect.F to save 1 exch call.
1139      - fix flux-form version in diffus.F to conserve tracer.
1140      update output of lab_sea.fd & lab_sea.hb87 (1rst set of modif affects
1141       machine truncation) and lab_sea.salt_plume (conservative flux-form modif)
1142    
1143    checkpoint62y (2011/05/26)
1144    o pkg/seaice:
1145     - seaice_growth.F : in EVOLUTION branch, always include
1146       a_QSWbyATM_cover in qnet (as it should be).
1147     - verification/global_ocean.cs32x15 : update results accordingly
1148       (output.seaice.txt output_adm.seaice.txt).
1149    o pkg/seaice + obcs:
1150     - use maskInW & maskInS in multi-dim advection and biharmonic diffusion:
1151       equivalent of assuming no tracer gradient outside the OB region.
1152       update output of seaice_obcs (uses DIFF1 <>0 => biharmonic diffusion)
1153     - remove calls to OBCS_COPY_TRACER after EXCH calls (no longer needed
1154       after changes above);
1155     - obcs+seaice cleaning: apply seaice-tracer OB values to tracer field
1156       only at OB location (instead of over a band of OLx width).
1157    o pkg/seaice:
1158     - fix wrong indices in old (non Flux-Form) diffusion default S/R diffus.F
1159       (dxG(I+1, ...) changed to dxG(I, ...), no impact on Lat-Lon grid)
1160    o pkg/obcs:
1161      - split header file "OBCS.h" into 4 separated files:
1162        OBCS_PARAMS.h, OBCS_GRID.h, OBCS_FIELDS.h & OBCS_SEAICE.h
1163       Note: OBCS_PARAMS.h & OBCS_GRID.h can be included without OBCS_OPTIONS.h
1164         (contain no conditional statement which depends on OBCS options).
1165      - move "useOBCSYearlyFields" from "data.obcs" (hold in OBCS_PARAMS.h)
1166        to parameter file "data.exf", namelist EXF_NML_OBCS (in EXF_PARAM.h).
1167    o ctrl, cost, grdchk & autodiff pkgs:
1168      - make options file more standard (like other {PKG}_OPTIONS.h file but
1169        with AD_CONFIG.h); clean-up some of the included header files.
1170    o pkg/obcs:
1171      - do not mask tracer when applying OB (tracer == 0 could generate problems)
1172      - apply tracer OB values to tracer field only at OB location (instead of
1173        over a band of OLx width)
1174      - clean-up obcs_apply_w.F & obcs_apply_eta.F (since less calls to these S/R)
1175      - remove OBCS_MULTIDIM_OLD_VERSION code in gad_advection.F and remove
1176        obcs_apply_tloc.F & obcs_apply_sloc.F
1177    o obcs in model/src:
1178      - call OBCS_APPLY_W only if NonHydrostatic.
1179      - call OBCS_APPLY_ETA only if NonLinFreeSurf.
1180      - reset dEtaHdt and wVel to zero outside OB interior region ;
1181      - leave tracer unchanged outside OB interior region: This has no effect
1182        on the solution but just to prevent unrealistic tracer value outside OB.
1183      - zero out velocity outside OB interior region: This has no effect on
1184        the solution but just to prevent unrealistic velocity outside OB.
1185    o obcs and non-lin free-surf:
1186       move call to OBCS_APPLY_R_STAR from update_r_star.F to calc_r_star.F
1187       and call to OBCS_APPLY_SURF_DR from update_surf_dr.F to calc_surf_dr.F
1188       + add argument "etaFld" to OBCS_APPLY_R_STAR & OBCS_APPLY_SURF_DR:
1189       this fixes missing EXCH + get consistent eta OB value (+ fix restart).
1190       update results of test-exp. exp4(nlfs).
1191    o exp4 (nlfs) test-exp:
1192       use OBC for Eta at Western & Eastern OB (to test prescribing Eta
1193       with NonLin-FreeSurf); update output.nlfs.txt
1194    o obcs and 2d/3d solver norm:
1195       use interior masks (maskInC) to cancel out cg2d & cg3d matrix coeff at OB
1196       and outside OB interior region (will allow to place OB further inside the
1197       domain). Depending on the domain, can affects cg2d-Norm (previous
1198       cancellation outside OB was only partial), e.g. in exp4 & obcs_ctrl,
1199       and cg3d-Norm (previous Norm was computed before canceling OB terms),
1200       e.g. in tutorial_plume_on_slope.
1201      - update output of exp.: exp4 (x2), obcs_ctrl and tutorial_plume_on_slope.
1202    o pkg rbcs:
1203      - split RBCS.h into 3 files: RBCS_SIZE.h, RBCS_PARAMS.h & RBCS_FIELDS.h
1204      - add capability to apply relaxation to horizontal velocity uVel & vVel.
1205    o pkg/grdchk: add gradient check for control variable xx_shifwflx
1206    o pkg/shelfice/shelfice_init_fixed.F
1207      fix CPP-flag combinations
1208    o pkg/seaice: Merge iceage code of Pierre Rampal
1209      * update/change/correct ice age calculations
1210      * add age updates for pathological cases
1211      Probably needs more testing...
1212    
1213    checkpoint62x (2011/05/13)
1214    o pkg/mom_vecinv:
1215       high-order vorticity scheme: use interior masks (maskInW & S)
1216       to zero-out (outside OB) gradient of vorticity.
1217    o verification exp.:
1218       turn on "useEnergyConservingCoriolis" (better discretisation) in exp.
1219       hs94.128x64x5 and seaice_obcs ; update results.
1220    o pkg/obcs:
1221      fix bug in OBeta for YZ sections in obcs_exf_load.F
1222    o pkg/ctrl, pkg/shelfice, and optim:
1223      - add new control variable xx_shifwflx (fresh water flux underneath ice
1224        shelves). This is almost as tedious as obcs-ctrl, because the
1225        variables needs its own mask.
1226      - add a cost function term that penalizes the deviation of xx_shifwflx
1227        from the first guess (zero) in analogy to other control variables
1228    o pkg/shelfice:
1229      - start basic adjoint
1230    o pkg/ctrl:
1231      - remove extra 2D field "for good measure" when initializing in
1232        ctrl_set_globfld_[xy/xz/yz].F
1233      - replace hard coded precision 32 (a bug) in ctrl_map_ini_gen by ctrlprec
1234      - improve error messages in ctrl_set_unpack_*
1235    o OBC implementation in momentum:
1236       use interior masks (maskInC,W & S) in momentum S/R:
1237       - multiply divergence, tension and some del^i.u or del^j.v by maskInC
1238       - multiply del2u,del2v by maskInW/S (biharmonic viscosity)
1239       - multiply horiz. grad of vorticity by maskInW/S (in Leith scheme)
1240       - multiply gradient of wVel by maskInW/S in del2w calculation (NonHyd)
1241       Motivation: fix/clean implementation of OBC with biharmonic-viscosity
1242        (and also with Leith/Smagorinsky harmonic-viscosity).
1243       Update output of experiment dome and exp4 (+nlfs).
1244    o exp4 test-exp:
1245      - turn on: nonHydrostatic, exactConserv, viscA4 (with momDissip_In_AB=F)
1246        and prescribe time-varying OB (without pkg/exf) for zonal-velocity
1247        at Western & Eastern Boundaries (+/- 1 per-cent); Also prescribe
1248        time-varying OB at Western-side for wVel (NonHyd); update output.
1249      - add secondary set-up (.nlfs) using NonLin FreeSurf (z*) + mom_vecinv
1250        and biharmonic-viscosity ; also use prescribed time varying OB.
1251    o pkg/obcs:
1252      fix bug in OBWeta,OBWeta indices in obcs_apply_r_star.F
1253    o model/src:
1254      - fix startTime setting when baseTime<>0 & nIter0=0 are specified ;
1255      - initialise startTime & nIter0 with unlikely values: allows to set one
1256        from the other without ambiguity.
1257    o seaice_obcs test-exp.:
1258      add small diffK4T,S to test biharmonic diffusivity with OBCS ; update output.
1259    o pkg/obcs:
1260      - remove calls to OBCS_COPY_TRACER after EXCH for T,S & pTracer:
1261        no longer needed with maskInC,W,S in pkg/generic_advdiff.
1262    o pkg/seaice:
1263      - retired SEAICE_SALINITY and SEAICE_salinity in favor of
1264        SEAICE_VARIABLE_SALINITY and SIsalFRAC, respectively.
1265      - fixed bug in the initialization of sea ice salinity variable HSALT
1266        in seaice_init_varia.F  (removed dependence on ICE2WATR)
1267    o fizhi-cs test exp.:
1268       switch reference output convention for these 2 non-standard test-exp,
1269        from: pgi  6.1-5 on faulks (FC.6, -of linux_ia32_pgf77+authors_fc5)
1270          to: ifort 11.1 on baudelaire (FC.13, -of linux_amd64_ifort11)
1271       reason: faulks might get retired soon and pkg/fizhi has still Pb with gfortran
1272    o model/inc:
1273      - change type of PmEpR array (from _RS to _RL) to fix restart (with "-use_r4")
1274        of exp. global_ocean.90x40x15 (Suncronous time-stepping + Real-FW + NonLin-FS)
1275    o pkg/seaice:
1276      - fix calculation of saltFlux and saltPlumeFlux when using SEAICE_SALINITY
1277    o verification/lab_sea, 1D_ocean_ice_column, seaice_obcs, global_ocean.cs32x15
1278      - updated output*.txt files due to bug fixes in salt, saltPlumeFlux,
1279        and initial HSALT
1280    
1281    checkpoint62w (2011/04/26)
1282    o pkg/mom_fluxform:
1283      - fix calculation of del2u & del2v (no-slip BC) when using Non-Lin Free-Surf.
1284      - use parameter "sideDragFactor" in no-slip BC side-drag part.
1285      - update output of exp. global_ocean.90x40x15
1286    o pkg/mom_vecinv:
1287      mask del2u & del2v (no effect on results, but cleaner & closer to mom_fluxform)
1288    o update seaice exp.:
1289      use more consistent parameter values (remove "backward compatability only":
1290       ICE2WATR, SEAICE_lhSublim, SEAICE_cpAir, SEAICE_rhoAir + set rhoConstFresh)
1291      related to thermodynamics seaice. Update output (fwd+AD) of exp.:
1292       1D_ocean_ice_column (x2), lab_sea (x8), ioffline_exf_seaice (x2) & seaice_obcs
1293    o update test-exp global_ocean.90x40x15:
1294      o use default CD_CODE_OPTIONS file (Adams-Bashforth on CD Mom & Coriolis).
1295      o increase Overlap size from 2 to 3 (to allow to test bi-harmonic Visc.)
1296      o new pickup-files from a 100.yr run with pkg/down_slope (input.dwnslp params)
1297      o turn on zStar & viscA4 in standard set-up (dir input/)
1298        and update output files: output.txt & output.dwnslp.txt
1299    o new AD-test experiment: obcs_ctrl
1300      (From Matt MITgcm_Contrib/SOSE/BoxAdj) to test OBCS as control vector.
1301    o pkg/dic:
1302      fix two bugs in handling water vapour pressure in carbonate chemistry
1303      and air-sea fluxes. Found by Val Bennington and Galen McKinley
1304      (add DIC Option = WATERVAP_BUG to recover old results)
1305      update output of tutorial_global_oce_biogeo (fwd+AD) & tutorial_dic_adjoffline
1306    o adding allowInteriorFreezing option to check for water below freezing point
1307      at depth and bring the negative heat anomaly to the surface level
1308    o pkgs _fields_load:
1309      - extend GET_PERIODIC_INTERVAL to deal with non-periodic case (from pkg/rbcs)
1310      - use new S/R GET_PERIODIC_INTERVAL in pkgs:
1311        bulk_force, cheapaml, cfc, dic, obcs (+ ctrl/ctrl_get_gen_rec), offline and
1312        rbcs to get interpolation weights and time reccord number.
1313      - fix multi-threading in aim_fields_load.F
1314      - apply EXCH to temp arrays [0,1] after reading in dic_fields_load.F
1315    o external_fields_load:
1316      new S/R GET_PERIODIC_INTERVAL to calculate which time-record (and linear
1317       interpolation weights) to use in a periodic time-series ; do not divide by
1318       time-step to convert to integer:
1319       - this fixes case where externForcingPeriod is not multiple of time-step
1320          (Thanks to Christopher L. Wolfe)
1321       - this fixes case where externForcingPeriod is an odd multiple of time-step
1322         (was wrong by half of time-step); update results of tutorial_global_oce_in_p.
1323      store index of time-record which is currently loaded:
1324       - works without any assumption on sequence of calls to EXTERNAL_FIELDS_LOAD ;
1325       - needed for the adjoint but not yet used because of extensive recomputations;
1326         (to be fixed soon)
1327    
1328    checkpoint62v (2011/04/02)
1329    o verification/1D_ocean_ice_column added to test Ian Fenty's
1330      pkg/seaice_growth.F modifications for improving sea ice code differentiability
1331    o update output of exp4, internal_wave, seaice_obcs, tutorial_plume_on_slope
1332      (new velocity statistics after changing maskInW & maskInS definition)
1333    o pkg/generic_advdiff with OBCS:
1334      use maksInW & maskInS in advective flux and in biharmonic diffusion calculation:
1335      equivalent to assumption of no tracer gradient outside the OB region.
1336      This will affect the results if using obcs+biharmonic diffusion.
1337      update output_adm.txt of experiment bottom_ctrl_5x5 (not expected since no obc)
1338    o pkg/obcs:
1339      change definition of maskInW & maskInS: leave OB edges inside (maskIn=1)
1340      (e.g., maskInW(OB_Ie)=1 ) so that velocity normal-component at OB is still
1341      in Interior region. No impact on solution but affects Velocity monitor stats.
1342    o pkg/ptracers (adjoint)
1343      New option AUTODIFF_PTRACERS_SPLIT_FILES for writing separate
1344      tape file for each tracer
1345    o model/inc/src and pkg/autodiff: add parameters that allow to turn
1346      of parts of the adjoint code at run time. For now, there are only
1347      useKPPinAdMode, useGMrediInAdMode, and useSEAICEinAdMode. These
1348      parameters are set in data.pkg.
1349      This is the lazy coward's version of doing this, but still useful for
1350      debugging. In order to do it right, everything needs to be moved to
1351      pkg/autodiff.
1352    o pkg/autodiff: fix global_sum_tile_ad.F by resetting adsumPhi at
1353      the end; this fixes the adjoint balancing code for open boundaries.
1354    o pkg/ctrl:
1355      - change behavior of xx_${varname}period to be analogous to exf-conventions:
1356        xx_${varname}period =   0.,  means time-independent control part
1357        xx_${varname}period = -12., means one-year-periodic monthly control part
1358      - introduce helper routine ctrl_init_rec (part of ctrl_init.F) to
1359        clean up ctrl_init a little, remove unused variables
1360      - ctrl_init: fixed the handling of the start/endrec for obcs-variables
1361      - move "call cal_GetMonthsRec" from s/r ctrl_get_gen to s/r ctrl_get_gen_rec
1362    
1363    checkpoint62u (2011/03/15)
1364    o model/src:
1365      - for the adjoint, change NonLin-FreeSurf initialisation sequence: fill-in
1366        h0Fac from INITIALISE_FIXED and reset hFac to h0Fac in INITIALISE_VARIA ;
1367      - in initialise_varia.F (except for ALLOW_DEPTH_CONTROL) remove 2nd call to
1368        INI_DEPTHS, INI_MASKS_ETC & INI_LINEAR_PHISURF.
1369    o pkg/ctrl/obcs/ecco:
1370      - remove obsolete, unused, and partially broken code:
1371        ctrl_obcsvol/ctrl_obcsbal/ctrl_volflux and code within
1372        ALLOW_CTRL_OBCS_BALANCE
1373      - put a stop statement into ecco/cost_obcsvol.F, but also add
1374        cost_obcsvol to ecco_ad_diff.list
1375    o pkg/ecco: fix counting cost function contributions for obcs (code
1376      by Matt M.) and diffkr for diagnostics
1377    o pkg/ecco, pkg/ctrl, pkg/grdchk:
1378      add cost penalty terms for initial uvel, vvel, eta controls
1379      and I/O for prior error files
1380    o pkg/mdsio:
1381       move mds_check4file.F from eesupp/src to mdsio_check4file.F ; add option
1382       (new argument) to check for tiled file in mdsioLocalDir : this fix the
1383       restart from pickup_som , pickup_dic (& dic_co2atm) with mdsioLocalDir.
1384    o pkg/ctrl:
1385     - ctrl_obcsbal.F, ctrl_obcsvol.F: replace last calls of ctrl_getrec by
1386       ctrl_get_gen_rec, put a stop statement into ctrl_getrec. Remove
1387       unused and superfluous variables
1388     - ctrl_get_gen_rec.F: catch the case of xx_genperiod=0.
1389    o pkg/ecco
1390     - enable adjoint of Stevens OB
1391    o pkg/ctrl/ecco/grdchk:
1392      - remove global declaration of tmpfldx/yz and tmpfldx/yz2.
1393        Fortunately, we do not have any tests for the numerous cpp-flagged
1394        option of "obcs as control parameters" so we will never know
1395        if this is an improvement (but at least now things compile).
1396      - remove an obsolete initialization from ecco_cost_init_barfiles.F
1397      - fix some problems within never used ifdefs to make the code compile
1398    o pkg/obcs:
1399     - Refine Interior mask definition to work with more complex OB (e.g.
1400       if OB_Ie < OB_Iw); In case default setting is not sufficient, allows to
1401       read in Interior mask from file. Check if Interior mask is consistent
1402       with OB list of indices.
1403    o pkg/seaice
1404     - beginning code for a seaice tracer package,
1405       but currently only used for seaice age: SEAICE_AGE
1406       SEAICE_num = 4
1407       iTracer = 1: area-weighted ice age
1408               = 2: volume-weighted ice age
1409               = 3, 4: template for one-year vs. multi-year ice
1410       data.seaice has new namelist SEAICE_PARM03 for arrays related to
1411       SEAICE_num
1412    
1413    checkpoint62t (2011/03/05)
1414    o pkg/obcs:
1415     - obcs_apply_uv.F: change to a 2 steps method, first tangential component;
1416       then normal component. This ensures that the normal component is set
1417       correctly even when it conficts with tangential setting from an other OB.
1418       Affects results of test-experiment seaice_obcs: update the output.txt
1419    o pkg/obcs:
1420     - add code to monitor statistics of dynamical fields at OB.
1421     - take OBCS_BALANCE code out of obcs_calc.F into new S/R OBCS_BALANCE_FLOW :
1422       - fix to OBCS_BALANCE code (right hFac ; deal with simple OB intersection).
1423       - change default: balance the Net inflow through all OB (instead of balancing
1424         each OB separately); keep the old method if setting OBC_balanceFacX < 0.
1425     - switch on useOBCSbalance in dome experiment: only correct Western OB outflow
1426       to match Nortern OB inflow (OBCS_balanceFacN=0).
1427    o pkg/seaice:
1428     - redefined actual sea ice age to be ICEAGE/HEFF ifdef SEAICE_AGE_VOL
1429    o pkg/seaice (seaice_growth v 1.113):
1430     - reverting seaice_growth to v 1.111 in order to have code with exact bit
1431       compatibility with MITgcm_contrib/ifenty/Fenty_seaice_thermo_code_merge
1432       CPP option SEAICE_OCN_MELT_ACT_ON_AREA removed in v 1.112 is reintroduced
1433       runtime flag SEAICEareaFormula is kept but is inactive
1434    o model/src:
1435     - add new param to scale curvilinear grid distance and area when using
1436       a different sphere radius from the grid-files.
1437     - test/check multi-threads EXCH applied to local variable (cg2d_x)
1438    o adjoint:
1439     - enable adjoint of Stevens OB
1440     - add dummy_in_dynamics to enable extraction of ADJrhoinsitu
1441       (a bit delicate because of potentially modified adj. common block structure;
1442       current switch is ALLOW_AUTODIFF_MONITOR_DIAG, could be changed later)
1443    
1444    checkpoint62s (2011/02/15)
1445    o pkg/seaice (seaice_growth v 1.112):
1446     - introduce SEAICEareaFormula run time parameter, which selects the recipe for
1447       computing the ice cover tendency from effective thickness tendencies. Include
1448       Ian Fenty's formula.
1449     - remove 'undef SEAICE_OCN_MELT_ACT_ON_AREA' which may now be achieved using
1450       SEAICEareaFormula.
1451     - simplify notations for the various d_HEFF/d_AREA terms.
1452    o pkg/gmredi:
1453     - add Boundary-Value-Problem bolus transport (Ferrari etal, OM 2010) code
1454       from Christopher Wolfe (UCSD); add partial cell factor in vertical derivative;
1455       add a verification test-run (front_relax.bvp) to test GM_useBVP.
1456    o pkg/seaice (seaice_growth v 1.111):
1457     - for SEAICE_DO_OPEN_WATER_GROWTH, replace Gael's implementation with Ian's.
1458     - the new SEAICE_DO_OPEN_WATER_MELT allows open-water air-sea heat fluxes to
1459       also melt ice.
1460    o pkg/seaice:
1461     - McPhee formula for Ice-Ocean fluxes (provided by Ian Fenty).
1462     - can be used by #define MCPHEE_OCEAN_ICE_HEAT_FLUX in SEAICE_OPTIONS.h
1463    o pkg/cheapaml:
1464     - from Nico Wienders: New version of this package.
1465    o pkg/flt:
1466     - add CPP options to prevent floats to re-enter the opposite side of
1467       a periodic domain (default: keep periodicity)
1468    o pkg/gmredi:
1469     - apply exchange to GM_PsiX,GM_PsiY to get valid values near CS-corners
1470       (needed for multi-dim advection).
1471     - switch on GM Advective form in global_ocean.cs32x15 and update output.txt
1472    o model/src:
1473     - fix wrong re-setting of addMass array (ALLOW_ADDFLUID) for atmospheric run.
1474    o tutorial_tracer_adjsens
1475     - extend to NLFS and replace maskC by hFacC
1476       (change reference output accordingly)
1477    
1478    checkpoint62r (2011/01/24)
1479    o testreport:
1480     - add option -deloutp (-do) to remove output file after successful run
1481     - add option -mfile (-mf) for MPI machile-file and for each test-exp,
1482       extract exact list of procs from this file ; adjust COMMAND by
1483       replacing TR_MFILE & TR_NPROC with local machile-file & Nb of MPI procs.
1484    o pkg/ecco: replace old ineffective way of penalizing deviations from
1485      first guess (of obcs) with code by Matt Mazloff
1486    o pkg/ctrl: add code that allows the use of ALLOW_OBCS?_CONTROL without
1487      exf/cal
1488      - ctrl_init: fix initialisation (computation of diffrec) for obcs-ctrl
1489        and handle case of obcs?period == 0
1490        Not affected by these changes: There is still an inconsistency in
1491        the computation of start/endrec for the obcs variables for ALLOW_CAL
1492        defined (see comment by Menemenlis, 7-Mar-2003)
1493      - make S/R ctrl_get_gen_rec return something meaningful even if
1494        ALLOW_CAL is not defined
1495      - ctrl_getobcs?: simplify code so that it does not need to use
1496                       S/R exf_swapfields
1497    o testreport:
1498       allow to test MPI with different number of processors for each experiment:
1499       create file "SIZE.h.mpi" in each build dir.
1500       Note: update of "-command" argument not yet implemented.
1501    o model/src, pkg/autodiff, pkg/ecco, pkg/seaice:
1502      alleviate the need for additional 3D tapes when using
1503      the non-inear free surface in the adjoint. This is done
1504      by adding an 'update' of hfacc etc. to their current
1505      value at the beginning of forward_step.F.
1506    o pkg/seaice
1507      seaice_lsr: move stress-divergence computations out of outer pseudo-
1508      timestepping loop
1509    o pkg/obcs/obcs_prescribe_read.F: move 'CALL OBCS_EXTERNAL_FIELDS_LOAD'
1510      up, so that the calls of the ctrl_* subroutines are really at the end
1511      of the routine.
1512    o pkg/gmredi:
1513      allow to specify a 2-D horizontal map and a 1-D vertical profil
1514      as scaling factor for Isopycnal diffusivity (Redi) and GM diffusivity.
1515    o pkg/seaice:
1516      move lsr iterations from seaice_dynsolver to seaice_lsr.
1517    o pkg/seaice:
1518      reduce memory footprint of seaice mutldim advection tapes,
1519      by using a 2D tape independent of the generic_advdiff ones,
1520      and setting GAD_AREA=1 etc. rather than GAD_AREA=101 etc.
1521    
1522    checkpoint62q (2010/12/29)
1523    o model/src:
1524      - check horizontal grid-spacing for unset or zero/negative values.
1525      - change AD test hs94.1x64x5 to be truly a 2-D set-up.
1526    o pkg/flt:
1527      - use (recent) mdsio S/R MDS_READVEC_LOC instead of local FLT_MDSREADVECTOR
1528      - precision of input and output files set according to readBinaryPrec
1529        and writeBinaryPrec (previously always 64.b), pickup remains at 64 bits.
1530      - initial float position from tiled file was not converted to index space
1531        (looks like a bug): fixed to make it similar to initial pos. global file.
1532    o global_ocean.cs32x15:
1533       change SIZE.h of AD set-up to get same tiling as with MPI.
1534       Update output_adm, output_adm.thsice (pass@14) & output_adm.seaice (fail@11)
1535    o model/src:
1536       add flag to control printing of domain fields (bathymetry, hFac ...) in
1537       ini_mask_etc (call to plot_fieds_xy*).
1538    o pkg/thsice:
1539       if useEXF, some forcing fields are not valid in overlap: fixed by computing
1540       over the interior only + apply EXCH at the end (like with SEAICE advection).
1541    o pkg/mdsio:
1542      - add 2 arguments to S/R MDS_PASS_R4/8toRL/S for overlap size of buffer
1543        to copy to/from, so that it can be used to replace MDS_PASS_WH_R8toRL/RS.
1544      - change barrier call for safe multi-threads access to 3-D shared buffer.
1545      - MDS_READ/WRITEVEC_LOC use buffers from MDSIO_BUFF_3D.h (instead of local ones)
1546      - replace call to MDS_PASS_WH_R4/8toRL with call to MDS_PASS_R4/8toRL and
1547        remove the 4 S/R MDS_PASS_WH_R4/8toRL/S.
1548    o pkg/flt:
1549      - add fourth-order Runge-Kutta integration
1550      - add basic exch2 support (only 1 facet supported so far!)
1551    o pkg/mdsio+rw:
1552      new S/R to read local (or tile independent) vector (read counterpart of
1553       mds_writevec_loc, and front-end write_glvec_rl/rs).
1554    o global_ocean.cs32x15: additional input_ad.seaice experiment
1555        that uses pkg/seaice rather than pkg/thsice.
1556        (using multidim advection for seaice)
1557    o towards more F95 syntax for array specification in namelist:
1558      - change "data.diagnostics" (data.ptracers was changed before checkpoint62p)
1559        of all verification experiments.
1560           e.g.:    line: fields(1,3)='ETAN    ','ETANSQ  ',
1561          was changed to: fields(1:2,3)='ETAN    ','ETANSQ  ',
1562      - finish adding "-DNML_EXTENDED_F77" to DEFINES list in pgf77 and g77 optfiles
1563    o global_ocean.cs32x15: additional input.seaice experiment
1564        that uses pkg/seaice rather than pkg/thsice.
1565    
1566    checkpoint62p (2010/12/17)
1567    o pkg/thsice: rename (ad tape index) iicekey as ticekey, and move it
1568        to THSICE_SIZE.h to avoid conflict with pkg/seaice.
1569    o pkg/seaice: add seaice_diffusion.f seaice_map_thsice.f to adjoint.
1570        allow for use of multim. advection in seaice adjoint.
1571    o pkg/seaice: add diagnostics for snow precipitation and sublimation flux
1572      - first attempt to close budgets by taking into account the freshwater
1573        flux implied by the sublimation of snow and ice. So far only the
1574        volume budget is closed, turn on with soon-to-be-retired-again CPP-Flag
1575        SEAICE_ADD_SUBLIMATION_TO_FWBUDGET
1576    o eesupp/src:
1577      new S/R with new option (NML_EXTENDED_F77) to change array specification
1578      from F95 standard to commonly accepted extended F77 form.
1579      This would allow to use F95 syntax in namelist (needed with gfortran 4.4.5)
1580      and to revert back to the original syntax (with -DNML_EXTENDED_F77)
1581      for less tolerant f77 compiler (e.g., pgf77, g77).
1582    o globalFiles:
1583      commented out in parameter file "data" since it's not safe with MPI
1584      (e.g., wrong on aces); keep it if useSingleCpuIO=T (but not doing much
1585      in this case); no longer commented out in restart test (tst_2+2).
1586    o add adTapeDir to specify a special directory where adjoint tapes are
1587      written/read (adread_adwrite.F). adTapeDir is specified in data/PARM05
1588      and cannot be used together with mdsioLocalDir.
1589    o nesting pkgs:
1590      - packages_init_variables : put call to OBCS_INIT_VARIABLES in last position
1591      - update Gianmaria's Nesting pkgs (from Contrib/nesting_sannino)
1592      - add parameter files + utils dir + output from short run on beagle.
1593    o pkg/seaice:
1594        fix seaice_growth.F store directives; update results of exp. lab_sea.ad
1595    o pkg/seaice: explicitly store tsurfloc in seaice_solve4temp.F to avoid
1596      unnecessary copying in adjoint code, requires new parameter NMAX_ITER
1597    
1598    checkpoint62o (2010/11/25)
1599    o pkg/exf:
1600      - change CPP option EXF_VERBOSE to run-time logical param exf_verbose.
1601    o pkg/seaice:
1602      - seaice_ocean_stress: split a loop for better vectorization of the
1603        adjoint code
1604      - seaice_growth.F: fix bug in conservation of freshwater connected to
1605        capping of heff, put contribution into d_HEFFbyNEG
1606      - replace irritating parameters SEAICE_latentWater/Ice and SEAICE_sensHeat
1607        by something more sensible (parameters that are what their name implies)
1608      - change some defaults, so that by default exf-parameters are used for
1609        things like rhoAir, cpAir,latent/sensible heat parameters, in order
1610        to reproduce the old results, many data.seaice now contain funny values
1611        for cpAir and latent heat of sublimation
1612    o packages_readparms.F: move exf_readparms up in line so that
1613        exf-parameters are visible for other packages (e.g. seaice)
1614    o debugMode & debugLevel=2:
1615      - differentiate between debugMode & debugLevel=2:
1616        debugMode: controls printing of debug messages (sequence of S/R calls).
1617        debugLevel: controls printing of algorithm intermediate results and stats.
1618      - remove "if debugLevel=2 => debugMode" but keep "debugMode =>  debugLevel=2";
1619        => allows to print debug-stats without all sequence of call messages.
1620      - switch control of debug print from debugLevel to debugMode in many S/R.
1621    o pkg/obcs (obcs-sponge):
1622        fix bug that was introduced on Oct 25 (in dynamics.F v1.151): put back the
1623        call to OBCS_PRESCRIBE_EXCHANGES (need to exch gU,gV when using obcs-sponge)
1624    o pkg/generic_advdiff:
1625      - record overlap minimum size for each advection scheme;
1626      - refine criteria on overlap minimum size;
1627      - check and stop (in gad_check) if overlap size is too small.
1628    o pkg/obcs:
1629      - with ptracers: remove multiple calls to obcs_apply_ptracer (only done
1630        once, in ptracers_implicit.F)
1631      - with seaice: remove test on empty file name in obcs_apply_seaice (always
1632        apply OB values when tile has OB)
1633    o model/src, coriolis setting:
1634      - integer parameter "selectCoriMap" (=0,1,2) replaces 3 logical
1635        useConstantF, useBetaPlaneF, useSphereF ; can now read coriolis from
1636        files (selectCoriMap=3) with any grid.
1637      - add parameter "fPrime" for constant second Coriolis coeff (default=0).
1638    o pkg/seaice/seaice_growth.F:
1639        a few cosmetic changes that reduce the number of lines of code
1640    o pkg/obcs: add boundary conditions following Stevens (1990)
1641      - the code follows old MOM/NAOSIM code
1642      - so far it is only implemented for the eastern and western boundaries
1643        and NOT for pTracers
1644    o pkg/rbcs:
1645      - replace rbcsInIter by rbcsForcingOffset, the time in seconds at the
1646        beginning of the first rbcs forcing period.
1647      - add option rbcsSingleTimeFiles that makes rbcs read forcing data like the
1648        offline package, i.e., one file per time, labeled by iteration number;
1649        deltaTrbcs sets the timestep with which the data was generated;
1650        rbcsIter0 is the forcing iteration corresponding to rbcsForcingOffset.
1651      - rbcsForcingCycle=0 makes forcing non-cyclic.
1652      - make arithmetic safe for negative times and odd forcing periods.
1653    
1654    checkpoint62n (2010/11/09)
1655    o pkg/seaice:
1656        fix masking in free-drift S/R ; update results of exp. lab_sea.fd
1657    o pkg/obcs:
1658       New S/R to copy tracer value from the OB location to narrow band region
1659        (width = same as overlap) beyond the OB: preserve OB value (needed for
1660        high-order scheme) which were overwritten by EXCH call if in overlap
1661        region. Applied to theta, salt, ptracer and advected seaice variables.
1662       With seaice: use maskInC in similar way as in gad_advection.F,
1663        in seaice_advection.F and advect.F.
1664       Update output of experiment seaice_obcs and change exp4 to test OBCS with
1665        4th order Adv.Scheme. for pasive salt and ptracer.
1666    o tools/genmake2:
1667      - when looking for an optfile (not specified), only search for Fortran compiler
1668        (remove sym-link test + setting of CPP + makedepend check + C-compiler check)
1669      - in get_fortran_c_namemangling: use "$CC $CFLAG" to compile C test programm
1670        (instead of "$MAKE genmake_test.o" since an existing Makefile can be wrong)
1671      - set default for CPP to "cpp -traditional -P" (was the case without specifying
1672        an optfile, but otherwise default was just "cpp".
1673      - comment out PLATFORM=$p_PLATFORM (no idea where p_PLATFORM comes from)
1674      - when "CC" is not set in the optfile, look for possible C compiler
1675        (instead of just setting CC=cc)
1676      - put back version v.169 modif (from 2008/02/15), was dropped in v.173 changes:
1677        => add a ".F" to ".o" rule for source files with no "#include" (such as
1678           port_rand.F); otherwise, default ignores FOPTIM and just uses FFLAGS.
1679      - move gfortran before g77 in list of possible Fortran compiler (consistent
1680        with reference compiler switch from g77 to gfortran)
1681    o pkg/seaice:
1682      o remove SEAICE_OLD_AND_BAD_DISCRETIZATION-code, add a test to
1683        seaice_check that stops the model, when the CPP flag is used.
1684      o seaice_growth.F: make capping of ice volume conserving by returning the
1685        capped ice as freshwater to EmPmR. This does not change the verification
1686        experiments but will change runs where the capping is acutally active
1687    o change reference platform+compiler from faulks+g77 to baudelaire+gfortran
1688      (except the 2 fizhi test exp.); update output of exp.: bottom_ctrl_5x5,
1689         global_ocean.cs32x15 (icedyn, thsice, AD thsice), global_ocean_ebm (AD),
1690         lab_sea (fd, hb87, salt_plume), MLAdjust (3/5) and vermix (dd)
1691    o tools/genmake2:
1692      - merge genmake_warnings & genmake_errors into 1 log file: "genmake.log")
1693      - change DUMPSTATE default to false (can use "-ds" option to switch it to T)
1694      - clean previous genmake log files before anything else.
1695      - change Makefile to remove testreport log files (*.tr_log) and genmake log
1696        files only with "CLEAN" target (instead of "Clean");
1697    o pkg/generic_advdiff:
1698      Change OBCS in multiDim advection (gad_advection.F):
1699       Use maskInC to prevent intermediate update of tracer-field in OB regions,
1700       thus keeping current-time-step OB values; and remove the call to OBCS_APPLY
1701       which were applying future time-step OB values.
1702      This way, all explicit calculations use current-time-step OB values
1703       (simpler and more consistent).
1704      Affects results when set-up uses time-varying OBC and multi-dim advection;
1705       update output of experiment seaice_obcs.
1706    o pkg/seaice:
1707      move OPTIONS (formerly locally defined) to SEAICE_OPTIONS.h:
1708       this includes SEAICE_GROWTH_LEGACY (+ SEAICE_DO_OPEN_WATER_GROWTH &
1709         SEAICE_OCN_MELT_ACT_ON_AREA ) and SEAICE_SOLVE4TEMP_LEGACY.
1710      Default (pkg/seaice/SEAICE_OPTIONS.h) is to define SEAICE_SOLVE4TEMP_LEGACY
1711       but leave SEAICE_GROWTH_LEGACY undef ; For now, keep verification exp
1712       unchanged (SEAICE_GROWTH_LEGACY defined in */code*/SEAICE_OPTIONS.h)
1713    o pkg aim (2010/10/26):
1714      - Introduce ALLOW_INSOLATION, moving toward a more general incoming solar radiation
1715        formulation with obliquity, eccentricity, ... as run-time parameters,
1716      - Introduce diagnostics for top-of-the-atmaophere incoming solar radiation and
1717        upward shortwave radition at the surface (all-sky and clear-sky).
1718    o pkg/obcs:
1719      - writing sections with globalFiles=T does not work: switch to tiled-files
1720        when writing sections for OBCS (change pkg/rw/write_rec.F accordingly).
1721      - fix index bug (OB_Ie -> OB_Iw_) in obcs_apply_uvice.F
1722      - apply OBCS_SEAICE_COMPUTE_UVICE to both uice and vice at all obcs
1723    
1724    checkpoint62m (2010/10/21)
1725    o pkg/seaice: vectorize seaice_solve4temp.F
1726      - move iterations loops outside of i/j-loops
1727      - requires 2D arrays for TB and effConduct
1728      - add 2D iceOrNot to replace HICE_ACTUAL.GT.0, as HICE_ACTUAL is
1729        modified in this routine
1730      - a little bit of clean up, adjusting indentation, etc.
1731      - replaced a few TEN**a by exp(a*log(10.)) in new code for better
1732        performance and '**TWO' by '**2' (because TWO is a float),
1733        replaced ONE, ZERO
1734    o eesupp/src:
1735       fix flow dir for exch1_z_RX_cube, exch1_uv_RX_cube & exch1_bg_RX_cube
1736    o pkg/seaice/seaice_growth.F
1737      Revision 1.89 of seaice_growth.F completes the overall october 2010 revision and
1738      merging process. The merged routine has two branches, and one activates the 'evolution'
1739      branch by setting SEAICE_GROWTH_LEGACY to undef (at the top of the routine for now).
1740      In summary, here is what the '10/10 revision' did consist of
1741        part 1: seaice_growth.F revisions 1.71 to 1.75
1742          - Preliminary seaice_growth.F clean-up, keeping test results strictly unchanged.
1743            The emphasis here was on improving readability (e.g. by trying to use meaningful
1744            variable names) and modularity (e.g. by adding arrays to store heff etc. updates).
1745        part 1.5:
1746          - revising the lab_sea experiment to make it a more useful (i.e. stable
1747            and representative of an actual model run). This was done by generating a
1748            (winter) pickup to start from, switching back the main experiment dynamic
1749            solver from evp to lsr, having one of the experiments use the free drift solution.
1750        part 2: seaice_growth.F revisions 1.76 to 1.85
1751          - Sorting out hard-coded constants that prevented heat and fresh water conservation.
1752          - Sorting out the various fields units and sign (set early on and reset at the end)
1753            to avoid numerous scalings/re-scalings. By v1.85 the basic unit for ice, heat and
1754            fresh water stock is 'effective ice meters', and >0 implies more ice/snow.
1755          - Using tendency terms arrays (d_HEFF* etc.) to alleviate remaining code locks,
1756            and simplifying logical expressions to further improve readibility.
1757        part 3: seaice_growth.F revisions 1.86 to 1.89
1758          - Re-organize the blocks of code more logically.
1759          - Merging the '_if.F' pieces that add something new.
1760    o pkg/thsice:
1761      - vectorize thsice_solve4temp and thsice_get_exf.
1762        Problem: thsice_solve4temp has an unvectorizable statement that
1763        might also be problematic for TAF
1764      - thsice_get_exf: add the ALLOW_BULK_LARGEYEAGER04 CPP-flag. This
1765        does not change the verifcation experiment, but will change all
1766        experiments that have this flag undefined (not tested in verification);
1767        a little reorganization to save a few 2D fields and recomputations
1768      - 1st step of revisiting thsice adjoint (major recomp. sorted out)
1769      - 2nd step:  fix some store dirs
1770        o seems to work somewhat, i.e. using ifort but not g77
1771        o likely cause are incomplete init. or recomputation
1772        o start verification/global_ocean.cs32x15/input_ad.thsice
1773    o pkg/obcs: add support for exch2
1774      - the position of the boundary and prescribed values are specified using
1775        a global domain with exch2 facets stacked
1776        - in x for N,S boundaries (like W2_mapIO=-1)
1777        - in y for E,W boundaries (so E,W boundaries do not overlap)
1778    o pkg/mdsio: add support for writing global sections with exch2
1779        file layout is as for obcs described above:
1780        - for x-z sections, facets are stacked in x (like W2_mapIO=-1)
1781        - for y-z sections, facets are stacked in y
1782    o pkg/thsice:
1783       - change a few routines for better vectorization: thsice_albedo.F,
1784         thsice_step_temp.F, and in thsice_calc_thickn.F. Results are
1785         not affected, but in particular the latter routine has changed
1786         dramatically (not necessarily easier to read now).
1787       - re-arrange calculation in THSICE_SOLVE4TEMP: move outside of i,j loops
1788       iteration loop and call to S/R THSICE_GET_BULKF & THSICE_GET_EXF.
1789    o verification/lab_sea:
1790      - overhaul of the forward model experiments. The main motivation
1791        for this revision is that lab_sea has proven quite fragile (when
1792        changing the sea-ice code, and switching platforms) to a point
1793        when failures were very hard to attribute to specific code problems.
1794      - the suspected reason for this fragility is noise amplification by evp so,
1795        to start with, we decided to replace evp with lsr in the main experiment.
1796      - the input.lsr experiment thus became obsolete and was removed.
1797      - it was replaced with the input.fd experiment that uses an
1798        analytical "free drift" solution as the ice velocity field.
1799      - Taken together, input (lsr), input.fd (free drift) and input.hb87 (evp)
1800        will hopefully allow us to discriminate problems due to dynamic solvers
1801        from problems due to the thermodynamic code. input.salt_plume (lsr) allows
1802        us to test additional options, along with the salt plume package.
1803      - Finally a pickup was generated (at the end of a one year run) to
1804        make the tests more representative of an actual model run. Previously
1805        the tests starting point was a 1m thickness of ice everywhere.
1806    o pkg/seaice:
1807      - introducing S\R seaice_freedrift.F that compute the
1808        analytical solution to an approximate ice momentum
1809        equation (i.e. the simple stress/coriolis balance).
1810      - define SEAICE_ALLOW_FREEDRIFT to trigger the computation
1811        of the free drift velocity field, and enable its use.
1812        To actually use the free drift solution as the model ice
1813        velocity field set SEAICEuseFREEDRIFT to .TRUE. in data.seaice.
1814    o move "useOASIS" from PARAMS.h to EEPARAMS.h and read it from "eedata"
1815    
1816    checkpoint62l (2010/10/04)
1817    o pkg/seaice:
1818      -fix the USE_ORIGINAL_SBI version (for variable freezing point);
1819      -use "celsius2K" in SEAICE_VARIABLE_FREEZING_POINT and in new
1820       version (with USE_ORIGINAL_SBI undef);
1821    o add hooks for new packages OASIS, the package will follow
1822      (hooks exclude the seaice pkg for now)
1823    o pkg/autodiff: ALLOW_AUTODIFF_WHTAPEIO
1824      Option to use mdsio_read_whalos.F/mdsio_write_whalos.F,
1825      rather than mdsio_readvector.F/mdsio_writevector.F, within
1826      adread_adwrite.F to read/write adjoint-related tapes to disk.
1827    o eesupp and pkg/mdsio: ALLOW_WHIO
1828      Option to write/read 2D fields to files including tiles halos.
1829      The main purpose is for adjoint related "tape I/O".
1830      The secondary purpose is for debugging phases.
1831      A word on those rather specifically intended purposes.
1832      The code was meant to be stripped down to the bare minimum.
1833      Typically, there is a unique and basic mapping to the global
1834      buffer (tile by tile, then proc by proc, then level by level), and
1835      byteswaps and meta-files are omitted. Indeed the (*_WH*) code is not
1836      meant to generate user friendly outputs of various shapes and forms.
1837      Rather it is intended, for the knowledgeabale developers,
1838      to be largely independent of the many mdsio options, to allow
1839      outputs of tiles+halos in debugging phases and in adjoint runs,
1840      and to allow some flexibility in tuning (adoint) I/O depending on each
1841      file system behavior. With regard to tuning, most of the potential knobs
1842      (to leave files open, to allocate the I/O indep. of usesinglecpuio,
1843      to specify directories, to specify the typical size of I/O calls, etc.)
1844      are not yet included, and will be added if they prove useful.
1845    o pkg/seaice:
1846       fix uninitialised arrays in USE_ORIGINAL_SBI version of seaice_solve4temp.F
1847    o pkg/seaice:
1848       new S/R seaice_solve4temp.F: this is the merged version of Ian Fenty
1849       code (seaice_budget_ice_if.F) which enable to recover old standard
1850       code (seaice_budget_ice.F) when option USE_ORIGINAL_SBI is defined.
1851       temporary: add "#define USE_ORIGINAL_SBI" at the top of seaice_solve4temp.F.
1852    o model/src (rStar):
1853       use simple average (not area weighted) of rStarFac at U,V point when using
1854       vectorInvariant and selectKEscheme=1,3 (consistent with mom. vertical advection)
1855       update output of exp. fizhi-cs-32x32x40 and fizhi-cs-aqualev20.
1856    
1857    checkpoint62k (2010/09/17)
1858    o adjoint
1859       * changed verification/global_ocean.cs32x15 ; adjoint now tests
1860         Adams-Bashforth 3 + NLFS + RSTAR
1861       * some more modifs required for ECCO-GODAE v4
1862    o pkg/seaice
1863       add SEAICE_AGE_VOL option to use volume instead of area for
1864       integrating SEAICE_AGE
1865  o model/src:  o model/src:
1866     first check-in of sigma & hybrid-sigma coordinate code ; also includes     first check-in of sigma & hybrid-sigma coordinate code ; also includes
1867     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 2131  o tools/build_options:
2131      but keep the former optfile for few weeks for smooth transition      but keep the former optfile for few weeks for smooth transition
2132  o pkg/ecco  o pkg/ecco
2133    - allow user defined cost function contributions    - allow user defined cost function contributions
2134          CPP: ALLOW_USERCOST_CONTRIBUTION       CPP: ALLOW_USERCOST_CONTRIBUTION
2135          USAGE: compute contributions in cost_usercost_all.F       USAGE: compute contributions in cost_usercost_all.F
2136    - note: this is identical to what ALLOW_GENCOST_CONTRIBUTION once was.    - note: this is identical to what ALLOW_GENCOST_CONTRIBUTION once was.
2137        the two options are complementary.        the two options are complementary.
2138  o pkg/smooth  o pkg/smooth

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