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revision 1.1370 by jmc, Thu Jan 27 20:52:10 2011 UTC revision 1.1640 by dimitri, Sat Mar 31 05:38:56 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/bbl: modification so it can work with z*
8    o eesupp/src:
9      - PRINT_MESSAGE: use OpenMP critical instruction (similar to PRINT_ERROR);
10        writing to unit 0 (if unit=errorMessageUnit) extended to the case myThid=1
11      - CHECK_THREADS: specific code if using OpenMP threading: improve checking of
12        # of threads across processors (e.g., different env OMP_NUM_THREADS setting)
13      - improve special preliminary call to EESET_PARMS (if eedata is read 2 times).
14      - when using MPI, always set usingMPI=T ; set default accordingly and stop
15        if not consistent.
16      - ALL_PROC_DIE: add a BARRIER after MPI_FINALIZE call ; skip this when thread
17        argument is zero (in case called within single-thread section).
18    o pkg/fizhi:
19        clean-up turbulence cold-start switch: decided in fizhi_init_vars.F, stored
20        in common bloc (fizhi_coms.h) and then passed as argument up to S/R TURBIO.
21    o pkg/exch2:
22      - add argument "updateCorners" to S/R exch2_get_uv_bounds (enable to
23        activate EXCH_IGNORE_CORNERS in vector EXCH S/R).
24      - switch 1rst EXCH call to IGNORE_CORNERS (instead of UPDATE_CORNERS)
25        but keep the 2nd with UPDATE_CORNERS: this prevents overwriting good data
26        with bad ones coming from a not-yet-updated halo.
27        This should fix the problem when sNx <> sNy and GCD(sNx,sNy) < 2*Olx.
28    o pkg/frazil:
29        move FrzForcT diag from frazil_diagnostics_state.F to frazil_calc_rhs.F
30        http://mitgcm.org/pipermail/mitgcm-devel/2012-March/005384.html
31    o model/src/config_check.F: add a check for OLx>sNx/OLy>sNy
32    o verification/lab_sea
33      * #undef SEAICE_EXCLUDE_FOR_EXACT_AD_TESTING
34      * #define ALLOW_SST_CONTROL & ALLOW_SST_CONTROL
35      * nTimeSteps 3 -> 4
36      * changed reference output accordingly
37    o pkg/ctrl:
38      * fix ctrl_get_gen for xx_sst, xx_sss
39    o pkg/fizhi:
40      - fix 2 calls to S/R GRD2MSC (argument igrd) in update_earth_exports.F
41        update results of exp. fizhi-cs-32x32x40 (fail with only 6 digits for cg2d)
42      - by default, use new version of S/R GETPWHERE (#define TRY_NEW_GETPWHERE);
43        fix few out-of-bounds indices in referencing vars (initialise igrd to 1);
44        clean-up fizhi_turb.F (remove unused & uninitialised qdiaglsm array).
45    o pkg/gmredi:
46      - add diagnostic of Redi (main diagnonal) vertical diffusive flux of Temp
47    o pkg/fizhi:
48      - fix few initialisation and multi-tile Pb: aqualev & gridalt now pass the
49        (old)aces open64 tuv test.
50    o pkg/icefront: fix bug and reorder loop in icefront_init_varia.F
51    o pkg/mom_vecinv:
52      - fix 1 loop range in mom_vecinv.F to be like all the other loops which
53        set/update gu,gv/Diss (fix Pb of uninitialised fVerUkp in admom_vecinv
54        with non-lin free-surf).
55    o model/src: move k-loop outside of i/j-loops when (re-)computing R_low
56      in ini/update_masks_etc.F in order to avoid -O3 optimization problems with
57      some compilers (gfortran 4.6.0 on MacOS)
58    o momentum:
59      - separate fVer?(:,:,kUp) & fVer?(:,:,kDown) in argument list of MOM_FLUXFORM
60        & MOM_VECINV subroutines (to help TAF). This fixes Pb of uninitialised
61        fVer?(kUp) in admom_fluxform with non-lin free-surf or bottom control.
62    
63    checkpoint63k (2012/03/17)
64    o model/src:
65       - selectAddFluid (ALLOW_ADDFLUID): add missing term in horizontal momentum
66         flux-form (mom_fluxform.F) and vertical momentum (calc_gw.F) equations.
67       - SOLVE_DIAGONAL: switch default to use adjoinable & vectorized version
68         (#undef SOLVE_DIAGONAL_LOWMEMORY); update output of exp. front_relax.bvp.
69    o model/src: solve_*diagonal.F
70       - replace division with multiplication by inverse (similar to original version)
71         update output of AD exp. global_ocean.90x40x15.
72       - fix pkg/gmredi/gmredi_calc_psi_bvp.F & pkg/ggl90/ggl90_calc.F
73         to enable the use of the vectorized & differentiable solve_tridiagonal.F
74       - test exp. global_ocean.90x40x15/input_ad: switch to advection scheme 20 for
75         vertical advection (to get solve_tridiagonal tested in AD mode).
76    o pkg/seaice: ECCO-CLIVAR merge:
77      1. seaice AREA relaxation
78         * CPP option: SEAICE_ALLOW_AREA_RELAXATION
79         * runtime flag: SEAICE_tauAreaObsRelax
80      2. modified global mean cost imbalance code: CPP option
81          ALLOW_SSH_GLOBMEAN_COST_CONTRIBUTION
82    o another iteration on solve_*diagonal.F
83       Make choices independent of AUTODIFF
84       Default will be the adjoinable vectorized version.
85       Alternative choices are:
86       * non-adjoinable original version with low memory footprint:
87         #define SOLVE_DIAGONAL_LOWMEMORY
88       * still adjoinable but does not vectorize (k as inner-most loop):
89         #define SOLVE_DIAGONAL_KINNER (keeping SOLVE_DIAGONAL_LOWMEMORY undef)
90    o testreport
91     - add option to use a home made wrapper around "make"
92     - remove MITGCM_IEEE env. variable (no longer active)
93    o pkg/shelfice
94     - improve computation of friction velocity for velocity dependent
95       exchange coefficients: include velocities into SHELFICEBoundaryLayer
96       block to average velocities vertically
97     - add TAF store directives for SHI_ALLOW_GAMMAFRICT
98    o Modify diagonal solvers, now three versions (upon request):
99      #ifndef SOLVE_DIAGONAL_AUTODIFF
100        1. default version (dating back a while ago)
101      #else /* def SOLVE_DIAGONAL_AUTODIFF */
102      # ifdef SOLVE_DIAGONAL_KINNER
103        2. adjoinable version with k-innermost loop (G. Forget)
104      # else
105        3. adjoinable vectorized version of 2.
106      # endif
107      #endif /* SOLVE_DIAGONAL_AUTODIFF */
108      All flags are currently set within routines, but could/should be moved to CPP-options.
109      Array bounds for 1. are as before, for 2.,3. cover the entire domain
110      (could be changed for 1. too).
111    o verification/lab_sea (fwd):
112      - update the 4 fwd lab_sea test experiment: no longer SEAICE_GROWTH_LEGACY,
113        use 7 categories (except hb87), new solve4temp params (except salt_plume),
114        constant salinity (=4) or variable salinity (salt_plume) done through
115        SItracer.
116    o pkg/seaice:
117      - rename parameters: SIsalFrac to SEAICE_saltFrac & SIsal0 to SEAICE_salt0;
118      - remove old parameters ( SEAICE_freeze, SEAICEturbFluxFormula, SEAICE_gamma_t,
119         SEAICE_gamma_t_frz, SEAICE_availHeatTaper & SEAICE_availHeatFracFrz)
120        from SEAICE_PARMS.h ; still need to fix seaice_cost_sst.F (broken when
121        SEAICE_freeze got retired) but already better than previously with
122        SEAICE_freeze=123456.7 deg.C;
123      - move setting of facOpenGrow/Melt from SEAICE_INIT_FIXED to SEAICE_READPARMS
124        (safer multi-threaded setting); always set SEAICEuseEVP;
125      - setting of ocean-ice turb. flux coeff: moved from SEAICE_CHECK to
126        SEAICE_READPARMS & SEAICE_INIT_FIXED (this fixes wrong summary report);
127        stop if multiple specifications for the same coeff; make sure default
128        SEAICE_mcPheePiston is compatible with drF(1) & deltaT.
129    o pkg/obcs:
130      - allow to switch to upwind 1rst order advection scheme for the advective
131        flux computation at the open-boundary; disabled for adjoint built.
132    o pkg/ptracers:
133      - rename PTRACERS_RESTART.h -> PTRACERS_START.h
134      - rename ptracers_fields_blocking_exchanges.F -> ptracers_fields_blocking_exch.F
135      - add parameter to decide when to start a tracer; use internal flag to
136        know which tracer to step-forward; switch this internal flag at the top
137        of forward_step.F (new S/R PTRACERS_SWITCH_ONOFF); for now, not enabled
138        for adjoint built.
139    o pkg/seaice:
140      - add SEAICE_SIZE.h anywhere in the code where SEAICE.h is included ;
141      - move MULTDIM declaration and setting from SEAICE.h to SEAICE_SIZE.h ;
142      - keep experiment offline_exf_seaice truly single category (set MULTDIM=1).
143    o pkg/ecco:
144      - fix writing of output file DiagnosCost_ClimSalt/Theta
145        and DiagnosCost_DriftSalt/Theta (if multi-tiles per proc).
146    o pkg/seaice:
147      - add missing initialisation of COR_ICE array in dynsolver.F
148      - merging SEAICE_MULTICATEGORY define and undef cases. Now the same code is
149        compiled either way, and is tested in all exps (multidim was only tested
150        in lab_sea ad before).
151      - cosmetic change to prepare for future addition of ITD. no change to results.
152        no defaults change.
153      - added run time param SEAICE_multDim (7 for SEAICE_MULTICATEGORY, 1 otherwise).
154      - by lack of adequate verification experiments, I further used custom versions
155        of global_ocean.cs32x15 to test multicat or not, with pickup or not. All
156        should be correct.
157      - avoid recomputations in ad.
158    o array initialisation in adjoint mode:
159      1) pkg/mom_common/mom_calc_ke.F:
160        add full array initialisation of KE inside mom_calc_ke.F (ALLOW_AUTODIFF_TAMC):
161        The S/R which calls MOM_CALC_KE initialises KE but in some recomputation
162        part this initialisation is gone, resulting in Floating Point Exception
163        (caught by open64 compiler with debug option).
164      2) model/src/convective_weights.F
165        set output convectCount over the full array range (instead of doing
166        an update): this fix a similar issue when called within recomputation (adjoint)
167        which could by-pass the initialisation (normally done in the caller S/R).
168    o pkg/seaice:
169      - final version of turbulent flux params, as agreed at MIT ice meet:
170           SEAICE_mcPheePiston (default is ~ 0.000875)
171           SEAICE_mcPheeTaper (default is 0.)
172           SEAICE_frazilFrac (defualt is 1.)
173           SEAICE_mcPheeStepFunc (default is false)
174      - changes results at trunction error level
175      - ifdef SEAICE_EXTERNAL_FLUXES, disallow SEAICE_waterAlbedo
176    o added pkg/frazil:
177      - see frazil_description.tex for details
178      - verification experiment is global_with_exf/input.yearly; changes output.yearly.txt
179    o pkg/shelfice/shelfice_thermodynamics.F
180      - fix exponents for velocity dependent exchange coefficients: change
181        from 2/3(=0) to 0.66666666666666667
182      - move computation of velocity dependent exchange coefficients into
183        separate loop, so that it applies to both thermodynamics
184      - move some divisions by constants out of loops
185    
186    checkpoint63j (2012/02/16)
187    o pkg/seaice:
188      - overhaul of seaice_summary.F after feb 2012 clean-up of seaice_growth.F etc.
189      - SItracer:  added run time params, and allow coupling to ocn salinity.
190    o pkg/seaice: remove (almost) all divisions by constants within loops
191      in seaice_growth.F and seaice_solve4temp.F, this changes (only) the cg2d
192      results of global_ocean.cs32x15.seaice from 16 to 11 digits (but only
193      those, caused by 1/QI -> recip_QI) -> update output.seaice.txt,
194      output_adm.seaice_dynmix.txt and also lab_sea: output_adm.evp.txt
195    o pkg/seaice :
196      - simplify McPhee tapering, and allow to use it with SEAICEturbFluxFormula
197        = 1 or 2, using newly added run time parameter SEAICE_availHeatTaper.
198      - fix d_AREAbyATM, d_AREAbyOCN, d_AREAbyICE diags I broke in r1.148.
199      - add permanent SItflux diag that corresponds to TFLUX but includes
200        ice+snow. Hence SItflux-TFLUX should match the ice+snow heat budget.
201      - allow activation/testing of a fix for suspected missing term in
202        ocn-ice heat budget (to be confirmed). To test this, you want to
203        undef SEAICE_DISABLE_HEATCONSFIX, and then set the run time param
204        SEAICEheatConsFix to .TRUE. that also allows the 'SIaaflux' diagnostic.
205      - no change in results, fwd or ad.
206    o global_ocean.cs32x15/results: 3 changes following from the pkg/seaice commit below:
207      - switch to variable freezing point.
208           Results change : cg2d -> 1 digits; ad -> 3-6-6 digits.
209      - bug fix : the sublimation term that was missing is now activated.
210           Results change : cg2d -> 2 digits; ad -> 8-6-6 digits.
211      - bug fix : flooding sign term for SIsal0.NE.0.
212           Result change : cg2d -> 8 digits; ad -> 11-12-9 digits.
213    o pkg/seaice:
214      - unified freezing point treatment : the old SEAICE_VARIABLE_FREEZING_POINT
215        is now the default, and the old default constant freezing point is recovered
216        with SEAICE_tempFrz0    = -1.96,
217             SEAICE_dTempFrz_dS = 0.,
218      - retire SEAICE_freeze (= the old way of specifycing the constant freezing point)
219      - remove ALLOW_SEAICE_FLOODING brackets; run time switch is already there.
220      - bug fix (thanks to M. Losch) : the sublimation term that was missing is now
221        activated. To reproduce old results with this bug define SEAICE_DISABLE_SUBLIM.
222      - bug fix (silly me) : flooding sign term (seaice_growth.F r 1.149line 1211)
223        was wrong for SIsal0.NE.0. Changes cs32x15 results (see above item for detail).
224      - bug fix (thanks to O. Jahn) : area loss for melting  got messed up in
225        seaice_growth r149 for legacy branch (no results change).
226      - introduce SEAICE_CAP_SUBLIM : caps sublimation heat flux in solve4temp (code
227        from I. Fenty).
228      - results did not change except for global_ocean.cs32x15, mostly due to the
229        switch to variable freezing point (see above item for detail).
230    o pkg/thsice:
231      - fix and simplify interface to salt_plume pkg ; diagnose directly amount of
232        seawater freezing in thsice_calc_thickn (not used).
233    o pkg/seaice: turbulent flux term specification via run time params.
234      - replace CPP switches with run time switches to facilitate testing
235      - retired CPPs : MCPHEE_OCEAN_ICE_HEAT_FLUX,
236                       GRADIENT_MIXED_LAYER_TURBULENCE_FACTOR
237      - added runtime parameter : SEAICEturbFluxFormula
238      - move Mcphee constants to SEAICE_PARAMS.h
239      - seaice_readparms.F : read turbulent flux term params (SEAICEturbFluxFormula;
240                 SEAICE_availHeatFrac/Frz, or SEAICE_gamma_t/_frz if apply);
241                 remove seaice_summary call (moved to seaice_init_fixed)
242      - seaice_init_fixed.F : set SEAICE_availHeatFrac/Frz depending on
243        SEAICEturbFluxFormula, and seaice_summary call (moved from seaice_readparms)
244      - seaice_summary.F : add missing report of read turbulent flux term set up
245                           and SITRACER.
246      - seaice_check.F : check range; inform and stop if retired CPPs are used
247                         (incl. SEAICE_AGE).
248      - seaice_growth.F : unified use of SEAICE_availHeatFrac/Frz, without
249             CPP switch, same computation as before for the different options.
250      - change results at the truncation level.
251    o pkg/seaice:
252      - remove un-used parameters LAD & MAX_TICE ; add new run-time parameters:
253        useMaykutSatVapPoly (default=F), postSolvTempIter (default=2) and
254        SEAICE_wetAlbTemp (default=-1e-3). Remove option SEAICE_SOLVE4TEMP_LEGACY.
255      - update verification/*/input*/data.seaice:
256        to reproduce previous results with former #defined SEAICE_SOLVE4TEMP_LEGACY
257        code, set useMaykutSatVapPoly=T & postSolvTempIter=0 ;
258        and to reproduce previous results with former non-SOLVE4TEMP_LEGACY code,
259        set SEAICE_wetAlbTemp=0 & SEAICE_snowThick=0.
260    o pkg/seaice/seaice_solve4temp.F (SOLVE4TEMP_LEGACY):
261      - remove LEGACY code for solving for tsurf (A1,A2,A3) but maintain the same
262        algorithm (same choice: useMaykutPolySatVap=T, postSolvTempIter=0);
263        difference in results only due to machine truncation.
264      - remove MAX_TICE (tsurf is always =< TMELT anyway); keep MIN_TICE if using
265        MaykutPolySatVap; keep MIN_LWDOWN.
266      - adapt SEAICE_MODIFY_GROWTH_ADJ code (untested) to non-legacy formulation.
267      - update output of verification exp. lab_sea (4 fwd: 11 cg2d digits except hb87,
268        + 3 AD: 6 digits except evp) and offline_exf_seaice.seaice (12 digits).
269    o pkg/salt_plume:
270      - isolate saltPlumeFlux array exch into a specific S/R called from
271        do_oceanic_phys.F
272      - add interface to pkg/salt_plume (filling of saltPlumeFlux) in pkg/thsice.
273    o verification:
274      - move untested set-up to MITgcm_contrib/verification_other.
275    o pkg/seaice:
276      - retire old way of SEAICE_AGE. Now replaced with ALLOW_SITRACER.
277    o pkg/seaice:
278      - seaice_solve4temp.F (keeping results unchanged):
279        * add 2 future run-time params to select which saturation vapor pressure
280          formula is used and how post-iteration fluxes are set.
281          Temporary set these 2 params according to option SOLVE4TEMP_LEGACY;
282        * New piece of code (not used) to update surf. atmos. heat flux F_ia using
283          the linearized expression to stay consistent with tsurf finding.
284      - seaice_freedrift.F avoid floating exception in sqrt(y) since y=sqrt(x*x)-x
285        can be < 0.
286    o pkg/seaice/seaice_solve4temp.F (SOLVE4TEMP_LEGACY undef):
287      - remove from F_ia (and from it's derivative dFiDTs1) the contribution of
288        conductive heat flux F_c , and add it explicitly when updating tsurf as
289        solution of: Fc = Fia + d/dT(Fia - Fc) *delta.tsurf
290        so that now F_ia has a consistent meaning through the entire routine.
291        This causes differences at truncation level: update output of fwd exp.
292        global_ocean.cs32x15.seaice.
293    o pkg/seaice:
294      - lots of editing/cleaning in seaice_solve4temp.F + better documentation
295        of arrays, sign/direction of fluxes; no effect on results.
296      - replace hard coded 273.16 (=previous value of celsius2K) by celsius2K
297        in seaice_budget_ocean.F & seaice_solve4temp.F (SOLVE4TEMP_LEGACY part);
298        note: this should have been done before changing celsius2K default.
299      - to keep results unchanged, add back old value of celsius2K in verification
300        exp. input*/data : lab_sea (AD), offline_exf_seaice (fwd+AD) & seaice_obcs
301      - replace hard coded seawater freezing temp in seaice_solve4temp.F (part
302        SOLVE4TEMP_LEGACY) of 271.20 (=previous value of celsius2K + default
303        value of SEAICE_freeze) by celsius2K+SEAICE_freeze so that seawater
304        freezing temp is consistent with value in seaice_growth.F ; this causes
305        differences at machine truncation level: update lab_sea AD output (3/4).
306    o pkg/seaice:
307      - mask (in exf_init_fixed.F) atemp,aqh,evap,precip,runoff,lwflx,areamask
308        and climsst/sss even when using seaice (to prevent calculation that might
309        use SST on land); does not affect any verification exp.
310      - apply mask to taux,tauy (in seaice_get_dynforcing.F); update output
311        of lab_sea.fd & lab_sea.hb87 and global_ocean.cs32x15.seaice_dynmix.
312    o pkg/seaice/seaice_growth.F: add mask to avoid non-zero ice thickness
313      over land (non-legacy code)
314    o vectorize salt_plume package:
315      - add extra code to salt_plume_frac and salt_plume_tendency_apply_s
316      - this code computes plumebk everywhere (also over land), thus requires
317        code to avoid divisions by zero and catch the case of kLev=Nr.
318      - efficiency of salt_plume_frac is still sub-optimal
319    o tools (genmake2):
320      - fix makefile NAME specification (option: -makefile NAME) by adding
321        "-f $MAKEFILE" in few places where it was missing including makedepend
322        command (contribution from Paul).
323    
324    checkpoint63i (2012/01/24)
325    o model/src:
326      - add factorized versions of some EOS code to find_rho.F,
327        define USE_FACTORIZED_EOS to turn it on (default for TARGET_NEC_SX)
328    o model/src:
329      - add celsius2K to namelist PARM01; remove unused recip_rhoNil from PARAMS.h;
330      - change default celsius2K from 273.16 to 273.15
331      - to keep results unchanged, add back old value of celsius2K in verification
332        exp. input*/data : aim.5l_cs, 1D_ocean_ice_column, lab_sea (fwd),
333         global_ocean.cs32x15(seaice) & cpl_aim+ocn(input_atm).
334    o model/src: add a little initialisation trick to find_rho.F and find_alpha.F
335      to make TAF generate vectorizable code
336    o pkg/seaice/seaice_evp.F: add code (copied from CICE) that avoids underflows.
337       Turn on by defining SEAICE_EVP_ELIMINATE_UNDERFLOWS. Most compilers
338       have flags that do this more efficiently.
339    o pkg/diagnostics/diagstats_calc.F
340      - for TARGET_NEC_SX fix the treatment of the scaling factor tmpFac=scaleFact
341    o pkg/obcs (with exch2):
342      - derive OB indices in overlap region from OB-InsideMask (in obcs_init_fixed.F)
343        and remove code (in obcs_readparms.F) which was based on EXCH of indices
344        (through buffer) and did not account for exch2 (e.g., CS-grid) topology.
345    o pkg/exf and seaice exp:
346      - change offline_exf_seaice.seaicetd test exp. to use default DIFF1 value (=0)
347        so that switching off area & heff advection flags does not affect results.
348      - change default EXF_LWDOWN_WITH_EMISSIVITY to #define in EXF_OPTIONS.h
349      - keep exp. seaice_obcs & 1D_ocean_ice_column(ad) unchanged (using #undef
350        EXF_LWDOWN_WITH_EMISSIVITY) and, using pkg/exf default emissivities, update
351        results of verification experiments: 1D_ocean_ice_column(fwd),
352        global_ocean.cs32x15.seaice(fwd+ad) & seaice_dynmix(ad), lab_sea (all 8)
353        and offline_exf_seaice (all 4).
354    o pkg/seaice:
355      - remove array YNEG, RIVER, TMIX (replaced by local var) from common block;
356        remove also areaNm1 & hEffNm1 when SEAICE_GROWTH_LEGACY is undef.
357      - fix bug: areaNm1 & hEffNm1 are needed in seaice_growth (SEAICE_GROWTH_LEGACY)
358        but were not filled when resp. SEAICEadvArea=F & SEAICEadvHeff=F and
359        not multi-dim advection;
360      - fix seaice_growth.F to compile with both SEAICE_GROWTH_LEGACY and
361        SHORTWAVE_HEATING #undef.
362    o optim: make Makefile more robust (?)
363    o pkg/obcs:
364      * fix treatment of obcs_read_pickup for TAF
365    o pkg/shelfice:
366      * add missing initialisation of num_shifwflx
367      * new adjoint verification exp. for isomip
368      * change Prandtl and Schmidt numbers from generic formulations
369        (in terms of model diffus. and visc.) to separate runtime
370        parameters, with Holland and Jenkins (1999) default values.
371    o pkg/exf (interpolation):
372      - extended input field (2 rows) near the N & S poles:
373        * fill in with the symetric value (when even Nb of data in longitude)
374        * add average value at the poles only for scalar quantities ; for vector
375          component interpolation, skip the averaging and keep duplicated values,
376          unless the 2 components have same location (uvInterp=T) in which case
377          interpolate the 2 components together using S/R EXF_INTERP_UV.
378      - new S/R EXF_INTERP_UV to interpolate the 2 components of a vector field
379        together: this allows to account properly for local orientation when
380        averaging at N & S pole.
381      - add CPP option EXF_USE_OLD_INTERP_POLE to recover old results regarding
382        exf-interpolation near N & S poles. Undef by default.
383      - add debug check/print on 1rst iter if debugLevel >=2.
384    o pkg/exf:
385      - change masking flags definition (no longer "parameter"), put them in
386        common block and set them in S/R EXF_INIT_FIXED.
387      - change recognized masking flag from s,u,v to c,w,s since the mask
388        to use (maskC,W,S) depends on position on model grid and has little to
389        do with scalar/vector difference; fix masking if using P-coordinates.
390      - fix masking of wind-stress (was wrong if interpolated or read on A-grid)
391        and update results of exp. global_with_exf (x2).
392      - fix setting of zenith-angle table when SHORTWAVE_HEATING is undef.
393    o pkg/obcs
394      - S/R obcs_calc_stevens: fix a small bug (gammat -> gammas where appropriate)
395    o pkg/exf (interpolation):
396      - assume periodicity in X only if input field cover full longitude range.
397      - improve search for lat. index (supposed to be faster, in ~log2(ny) steps,
398        and should vectorise).
399      - fix input lat of the 2 added row (in case we provide N.pole data).
400    
401    checkpoint63h (2011/12/30)
402    o pkg/seaice:
403      - change declaration of UVM from _RL to _RS in order to get B-grid
404        uIce,vIce monitor when _RS = real*4
405    o pkg/offline:
406      - new S/R OFFLINE_RESET_PARMS for resetting main-model params (switch off flags);
407      - compute vertical velocity if not read from file (switch on exactConserv
408        & staggerTimeStep);
409      - fix output of ptracer monitor iter & time for default PTRACERS_monitorFreq.
410    o verification:
411      - update grid-files (in tutorial_held_suarez_cs/input and fizhi-cs-32x32x40/input)
412        with grid-angle generated using "utils/matlab/cs_grid/cubeCalcAngle.m":
413        fix Pb in yG definition @ 2 missing corners (previously yG was averaged);
414      - update output of exp. global_ocean.cs32x15.viscA4 after changing
415        grid-file angles (used here for coriolis-3d);
416      - remove (or gzip) few files not needed to run fizhi-cs experiments.
417    o pkg/exf (vector interpolation):
418      - rotate vector component toward local grid-axis orientation using grid-angles
419        (stored in GRID.h) instead of locally computed rotation angle; keep old code
420        available with exf option EXF_USE_OLD_VEC_ROTATION (undef by default).
421    o pkg/seaice:
422      - allow to compile with exf options ALLOW_ATM_TEMP or ALLOW_DOWNWARD_RADIATION
423        undefined. Fix and remove the stop when ALLOW_RUNOFF is undefined.
424    o pkg/PKG_OPTIONS.h files:
425      - move #include "CPP_OPTIONS.h" just after #include "PACKAGES_CONFIG.h",
426        outside of the #ifdef ALLOW_THISPKG / #endif block.
427      - update verification/*/code/PKG_OPTIONS.h files.
428    o add a verification experiment (offline_exf_seaice/input.seaice) that test
429      the B-grid LSOR solver
430    o pkg/seaice: sort out emissivity and long wave radiation step 2:
431      - add emissivity for snow and ice as new run-time parameters
432        (unfortunately) that default to the corresponding exf values; this
433        changes results in most verification experiments so that for backward
434        compatibility these parameter have to be set explicitly to inconsistent
435        values (ugly);
436      - the exf-flag EXF_LWDOWN_WITH_EMISSIVITY then gets rid off the hard-wired
437        emissivities of 0.97 associated with lwdownloc in S/R seaice_solve4temp
438        until we agree how to handle this bug properly
439    o pkg/exf (interpolation):
440      - add a set of run-time param ({inputfield}_interpMethod), one for
441        each interpolated input field, to select the interpolation method
442        with a value of zero switching off the interpolation;
443      - print interpolation parameters to standard output;
444      - refine exf_check.F accordingly ; stop if USE_NO_INTERP_RUNOFF is defined
445        (to use instead runoff_interpMethod=0 in data.exf).
446      - simplify default setting of interpolation parameters (for all fields,
447        set position to match model grid cell-center position, leading to trivial
448        interpolation in case of regular Lat-Lon grid) and fix for the case of
449        non-uniform delY.
450    o pkg/exf/exf_radiation.F: add the factor ocean_emissivity to lwdown, for
451       within #ifdef EXF_LWDOWN_WITH_EMISSIVITY/#endif. Unless ocean_emissivity=1.
452       this factor is absolutely required, because the lw exitance (= out-going
453       long wave radiation) is emissivity*stefanBoltzmann*T^4 + rho*lwdown,
454       where the reflectivity rho = 1-emissivity for conservation reasons. Once
455       this is established, we can remove the CPP-Flag (if we want to).
456    o pkg/seaice:
457      - qualify a stop statement in S/R seaice_check: EXF_READ_EVAP and
458        ALLOW_BULKFORMULAE are only required if SEAICE_EXTERNAL_FLUXES is defined
459      - sort out emissivity and long wave radiation, step 1: make SEAICE_emissivity
460        what the name implies (and not emissivity*BoltzmannConstant), this means
461        the old default value of 5.5e-8 now means
462        5.5e-8/5.670e-8 = 0.97001763668430343479 as ocean_emissivity in
463        S/R exf_readparms
464      - FV-discretization of the B-grid LSOR solver, turn on with
465        SEAICE_LSRBNEW. This new solver also involves a slight re-organization
466        of the calling routine dynsolver, so that B and C-grid code look a
467        little more alike.
468      - fix index bugs in ostres.F (B-grid code)
469    o pkg/seaice/seaice_ocean_budget.F: change (unused) code to make it look better
470    o pkg/seaice/seaice_readparms.F: make ocean_emissivity*stefanBoltzmann the
471      default for SEAICE_emissivity, if useEXF; requires setting a wrong
472      parameter value in global_ocean.cs32x15/input.seaice/data.seaice for
473      backward compatiblity
474    o model/src: use sigmaR in calc_ivdc
475    
476    checkpoint63g (2011/12/16)
477    o pkg/seaice/seaice_growth.F:
478      fix heat conservation of the coupled ocean-seaice system.
479      when SEAICE_HEAT_CONSERV_FIX is defined, the mismatch of
480      solid vs liquid water treatment is resolved via QNET.
481    o pkg/seaice/seaice_growth.F:
482      add missing term for sublimation in saltFlux, which was breaking conservation.
483    o pkg/seaice/seaice_model.F:
484      Remove this patholigical case treatment in evolution branch,
485      where it is un-necessary and breaks conservation.
486      Update global_ocean.cs32x15/results accordingly for
487      output.seaice.txt output_adm.seaice.txt and output_adm.seaice_dynmix.txt
488    o model/src:
489      useRealFreshWaterFlux: remove masking of EmPmP (using maskInC) in
490      external_forcing_surf.F and apply mask directly in S/R SOLVE_FOR_PRESSURE.
491    o pkg/obcs:
492      modify Stevens boundary conditions so that S/R obcs_calc_stevens computes
493      tendency for temperature and salinity that is then applied to update
494      theta and salt in S/R obcs_apply_ts; this requires proper masking of all
495      horizontal advection and diffusion contributions on the boundary (in
496      S/Rs gad_advection, gad_calc_rhs, gmredi_rtransport, gmredi_calc_diff), and
497      removing the mask in S/R timestep_tracer. The advantage of this approach is
498      that the updated tracer values include contributions from the surface
499      forcing and vertical diffusion.
500      This modification changes exp4.stevens because of vertical diffusion.
501    o model/src:
502      change non-curvilinear grid setting to also work with exch2 + blank tiles:
503      - move delX,delY to new header file (SET_GRID.h) and adjust length to 1rst
504        face dimensions.
505      - new S/R INI_LOCAL_GRID to define model tile-local grid (using same units
506        as delX,delY) and called from S/R INI_CARTESIAN_GRID, INI_CYLINDER_GRID
507        and INI_SPHERICAL_POLAR_GRID.
508      change test-experiment global_ocean.90x40x15:
509      - split the domain in many more tiles (9x4 tiles of 10x10 each);
510      - switch to exch2 and remove 1 blank-tile (but only for MPI test).
511      - update results of both test (std & dwnslp).
512    o pkg/diagnostics/diagstat_calc.F: fix problem with non-initialised halos in
513       tmp-fields for TARGET_NEC_SX at the cost of extra loops and less vectorisation
514    o model/src:
515      - take sigma-coords related code out of update_etah.F into new S/R UPDATE_ETAWS
516        and fix initialisation when using sigma-coords.
517    o model/src:
518     - improve Gael's changes from Jan 14, 2011 "addition of an 'update' of hfacc etc.
519       to their current value at the beginning of forward_step.F": add a new run-time
520       switch "doResetHFactors" (default=false) and use it to do (or not) the resetting.
521     - set doResetHFactors=T in the following test exp:
522        global_ocean.90x40x15/input (rStar) & input.dwnslp (linFS),
523        global_ocean.cs32x15/input.seaice (rStar), hs94.cs-32x32x5/input.impIGW (linFS)
524        and tutorial_global_oce_in_p (nonLinFS in p)
525    o pkg/ecco
526      - added IES cost term
527    o verification/advect_xz
528      - scale down the depth by 1/100 (from 200 km to just 2.km)
529      - add secondary test using divergent flow, r-star and implicit vertical advection.
530      - add note (check_conserve_TS.txt) and matlab script to check global
531        conservation of T & S with NonLin-FreeSurf and Adams-Bashforth.
532    o pkg/rbcs:
533      - add missing relaxUFile & relaxVFile in namelist (in rbcs_readparms.F).
534    o pkg/obcs (Stevens BCs):
535      - fix various problems in the phase speed computations of the Stevens
536        boundary conditions:
537        - sign error for western and southern boundaries,
538        - time tendencies were underestimated by factor of dTracerLev and some just
539          zero (for multidim advection schemes) -> now estimate time tendencies
540          from difference between previous (n) time level and the one before (n-1);
541          this requires storing a field per tracer per boundary, also in the pickup
542          files.
543        - replace deltaTmom in cflMer/Zon computation with dTracerLev
544        - set default phase velocity to cflMer/Zon
545      - update verification experiment exp4.stevens
546    o pkg/generic_advdiff (implicit_r):
547      - fix implicit vertical advection conservation with AB and/or NonLin-FreeSurf
548        (remove Tr*d/dz(w) in gad_implicit_r.F and add it in gad_calc_rhs.F);
549      - fix implicit vertical diffusion or advection with NonLin FreeSurf
550        (was using current recip_hFacC instead of future recip_hFacC): set future
551        recip_hFac in thermodynamics.F and pass & use it in all vertical implicit
552        solver S/R ;
553      - fill diagnostics of vertical advective fluxes (computed from tendency)
554        when using implicit vert. advection;
555      - update output of exp that uses NonLin-FreeSurf & implicit vertical diffusion:
556         global_ocean.90x40x15 (fwd+AD), global_ocean.cs32x15 (4 fwd +4 AD),
557         tutorial_global_oce_in_p (fwd), tutorial_tracer_adjsens (AD)
558         and cpl_aim+ocn (used in ocean); to be fixed: bottom_ctrl_5x5.
559    o pkg/diagnostics:
560      - add diags for T & S tendency which goes through Adams-Bashforth.
561    
562    checkpoint63f (2011/11/30)
563    o pkg/obcs/obcs_calc_stevens.F:
564      - join some loops to reduce number of if-statements
565      - fix a bug in code for northern and southern boundaries.
566    o pkg/seaice/seaice_init_varia.F
567      - undo resetting UVM=0 that has slipped in unnoticed in r1.49 and
568        caused zero ice-velocities for the B-grid code
569    o pkg/seaice/seaice_init_fixed.F
570      - fix a bug in the initialisation of the second metric terms
571        k2AtC and k2AtZ: k2AtC was set to the value of k2AtZ and k2AtZ was 0.
572      - this affects all seaice configurations with useCurviLinearGrid = .true.
573        and SEAICEuseDynamics = .true. (default) and SEAICEuseMetricTerms
574        = .true. (default)
575      - the only verification experiment affected is global_ocean.cs32x15:
576        icedyn, seaice, and seaice_dynmix (AD)
577    o pkg/thsice/thsice_diagnostics_state.F
578      - only for TARGET_NEC_SX: initialise all of tmpFld, so that overlap does
579        not contain garbage that can lead to surprises in diagstats_calc.F
580    o model/src:
581      - move bi,bj loops inside INTEGR_CONTINUITY ;
582      - call INTEGR_CONTINUITY directly from forward_step.F
583        (previously called from momentum_correction_step.F)
584      - call UPDATE_ETAH from integr_continuity.F and update initialise_varia.F,
585        forward_step.F and pkg/ecco/the_main_loop.F
586    o model/src/do_oceanic_phys.F:
587      - reset addMass to zero only if useICEFRONT ;
588      - separated k-loop for rhoInSitu calculation ;
589      - add 2 diagnostics for wVel*delta^k(Rho) at constant pressure (= WdRHO_P)
590        and at constant T,S (= WdRHOdP);
591      NOTE: change diagnostics WRHOMASS : this is now simply the Vertical transport
592        of In-Situ Density (Anomaly) (=wVel*rho^bar-k) (previously was Vertical
593        transport of locally-referenced potential density);
594        to recover old diag: (WRHOMASS)_old = (WRHOMASS)_new -1/2 * (WdRHOdP)
595    o gluemnc:
596      - replace ncrcat with ncks when adding variables to *.glob.nc
597      - change the way variables without record dimensions are handled so that
598        files that have variables with and without record variables can be glued:
599        add a record dimension with a new unique name to be able to differentiate
600        between variable with and without a-prior record dimensions. Remove
601        this record dimension before adding the variable to the *.glob.nc file.
602        This procedure automatically works also for grid.*.nc files that do not
603        have any record dimension.
604    o verification/cpl_aim+ocn:
605      - generate new reference output on baudelaire (gfortran, mpich2) (previously
606        from old aces-grid cluster, ao + ifort) and update 'run_cpl_test' script.
607    o pkg/obcs/obcs_calc_stevens.F:
608      - add code for northern and southern boundaries.
609      - reorder some loops to save some operations and so that drFBar can be scalar
610    o model/src:
611      - re-arrange extrapolation calculation in Adams-Bashforth S/R (affects machine
612        truncation) and add diagnostics for Adams-Bashforth tendency increment.
613      - update test-exp. AD output:
614        1D_ocean_ice_column, bottom_ctrl_5x5, lab_sea.noseaicedyn, obcs_ctrl;
615      and FWD output: exp4 (x3), fizhi-cs-32x32x40, fizhi-cs-aqualev20,
616        front_relax (x3), global_ocean.90x40x15 (x2), global_ocean.cs32x15 (x5),
617        global_ocean_ebm, ideal_2D_oce, internal_wave, isomip (x3), lab_sea (x4),
618        matrix_example, MLAdjust (x5), natl_box (x2), tutorial_advection_in_gyre,
619        tutorial_global_oce_in_p, tutorial_global_oce_latlon and
620        tutorial_plume_on_slope.
621    o pkg/diagnostics/diagstats_calc.F: add special code for TARGET_NEC_SX
622      that vectorises. This code uses 3 extra 2D fields, F90 array assignments
623      and F90 intrinsic routines SUM, MINVAL, MAXVAL, but since TARGET_NEC_SX
624      does not even come with an F77 compiler anymore, this should not be
625      a limitation
626    
627    checkpoint63e (2011/11/06)
628    o pkg/seaice adjoint of LSR:
629      - substantially rework STORE dirs.
630      - add new flag SEAICE_LSR_ADJOINT_ITER and parameter SOLV_MAX_FIXED
631        this flag will do SOLV_MAX_ITERS but only store SOLV_MAX_FIXED fields
632        and only perform SOLV_MAX_FIXED adjoint iters.
633        If flag SEAICE_LSR_ADJOINT_ITER is undef-ined, the store in the iteration
634        always goes to same record, meaning that the last forward field will be
635        the one used in the adjoint - an approximation.
636      - now produces non-zero LSR-related gradients, and acceptable gradients for
637        An's zonal (x-z) test case (to be checked in)
638      - lab_sea: produces acceptable gradients for lab_sea with forward/backward LSR
639        (but these are screwed up by the thermodynamics in the first place);
640        reduce from 4 to 3 timesteps to avoid t.d. issue as temporary solution;
641        output_adm.txt also reflects changes to seaice_lsr
642      - global_ocean.cs32x15:
643        * the "default" input_ad.seaice has been re-defined to always exclude dynamics
644          (output_adm.seaice.txt was updated)
645        * new input_ad.seaice_dynmix tests a forward LSR / backward free-drift
646          (output_adm.seaice_dynmix.txt)
647    o test-exp. exp4+stevens:
648      - switch off pTracers and nonHydrostatic (restart problems with NH); update output
649    o pkg/seaice (lsr solver):
650      - put coriolis term into FORCEX,Y (as in seaice_evp.F; previously in rhsU,V only);
651        update output (change truncation) of FWD test exp lab_sea & global_ocean.cs32x15
652      - fix SEAICEuseFREEDRIFT for new OBCS version (ndef OBCS_UVICE_OLD)
653      - new parameter "LSR_mixIniGuess" allows (if=2,4) to mix free-drift solution
654        into initial guess for linearised solver; use weight ~ (1/err)^2,4.
655      - compute (with new S/R) and print initial (+ free-driff sol. if available)
656        and final residual of linearised system.
657    o pkg/pp81: add diagnostics for vertical eddy viscosity and diffusivity
658      (requires new subroutines pp81_init_fixed.F/pp81_diagnostics_init.F)
659    o pkg/obcs: Stevens BCs (still only for east and west)
660      - fix Stevens BCs by using intermediate velocities of previous
661        time step as "baroclinic" contribution rather velocity of one grid cell
662        inside the boundaries; more consistent but makes the entire treatment
663        more complicated, requires new pickup files and two new S/Rs:
664        obcs_copy_uv_n and obcs_save_uv_n
665        keep old version with flag OBCS_STEVENS_USE_INTERIOR_VELOCITY
666        (undefined by default)
667      - silently move computation of some grid factors into separate loops to
668        save some recomputations
669      - add a hack for non-linear free surface
670      - add a verification experiment to exp4 that tests this code
671    o make gluemnc/xplodemnc work with (moron) non-GNU shell tools
672    
673    checkpoint63d (2011/10/25)
674    o pkg/obcs + seaice-dynamics:
675      - new implementation calls OBCS_APPLY_UVICE (in seaice_dynsolver.F) before
676        solving for uIce,vIce and prevent SEAICE_LSR or SEAICE_EVP to modify OB
677        values (consistent with an implicit method).
678      - add option OBCS_UVICE_OLD (in OBCS_OPTIONS.h, defined by default) to
679        return to older implementation (same results as before); note that none of
680        the "experimental" OBCS_SEAICE options are implemented in the new version.
681      - switch test exp. seaice_obcs to use new version (update output).
682    o pkg/seaice:
683      - add few stop (B-grid & CS-exch, B-grid & obcs, AUTODIFF & SEAICE_maskRHS)
684      - add parenthesis in Water-Ice drag calculations (evp & lsr);
685      - in seaice_lsr.F, simplify and fix AA3 setting in case sNx or sNy=1;
686        and fix case SEAICE_waterDrag=0 (but unstable if no or little seaice)
687      - update output of test exp lab_sea that uses evp or lsr (fwd+ad)
688        and global_ocean.cs32x15 (icedyn & seaice fwd+ad).
689    o pkg/layers:
690      - Include potential density as new coordinate (Thanks to David Munday)
691    o pkg/dic:
692      - Remove subroutine CALC_PCO2_APPROX_CO3 from carbon_chem.F and add
693        carbonate computation/output to CALC_PCO2_APPROX
694    o pkg/generic_advdiff
695      - make TAF generate code that vectorizes:
696        gad_dst3fl_adv_*.F, gad_u3c4_impl_r.F
697    o model/src:
698      - improve vectorization also for adjoint code of
699        solve_tridiagonal and solve_pentadiagonal. As this requires up to
700        5 new 3D-fields, this code is only turned on for the combination of
701        ALLOW_AUTODIFF_TAMC and TARGET_NEC_SX. Also remove error message
702        for singular matrix check (only for TARGET_NEC_SX).
703      - remove hard-wiring of CPP-flag ALLOW_SOLVERS_KLOOPINSIDE to
704        ALLOW_AUTODIFF. This flag now needs to be set outside of
705        solve_tri/pentadiagonal.F
706    o pkg/exf:
707      - fix previous modif in exf_readparms.F (revision 1.66: treatment of
708        optional namelist EXF_NML_OBCS).
709      - add many debug-print (to trace down where pkg/cal error msg comes from)
710    o pkg/mom_vecinv/mom_vi_hdissip.F
711      - rearrange loops so that vectorization is improved and in particular
712        the adjoint routine vectorizes. The code is a little longer now, but I
713        think easier to read.
714        Note: CPP-flag MOM_VI_ORIGINAL_VISCA4 is not tested.
715    o pkg/seaice:
716      - allow to specify initial seaice velocity from files (uIceFile,vIceFile)
717    o pkg/exch2:
718      - alternative code (without tile x tile matrix) for cumulated (global) sum;
719        used as default; keep using matrix version in adjustment.cs-32x32x1.
720    o tools/build_options:
721      - after merging some MPI and/or multi-threads specific optfiles so that
722        the modified default optfile support both built (using genmake2 -mpi
723        for the MPI built, using genmake2 -omp for OpenMP built),
724        move now obsolete optfiles to tools/build_options/unsupported/
725       (add copy of email sent to support list in doc/optfiles_changes.txt)
726    
727    checkpoint63c (2011/09/28)
728    o pkg/ebm:
729      - fix ebm_zonalmean.F for several procs in Ydir (nPy > 1); update output of
730        test exp. global_ocean_ebm (affects machine truncation, 12 digits for cg2d)
731    o pkg/seaice (SItracer pickup)
732    * Simple code for pickup of SItracer fields (#define ALLOW_SITRACER)
733      To be done:
734      - thorough testing of missing fields in S/R seaice_read_pickup
735      - thorough matching between generic tracers and specific fields used
736        (e.g. volume-weighted age, area-weighted age, salinity, ...)
737    o pkg/grdchk:
738      - all procs calculate and print finite-difference gradient (for testreport)
739      - change description output used by testreport;
740      - AD testing: also compare and report Finite-difference gradient;
741        => update all output_adm*.txt
742    o test exp. global_ocean_ebm:
743      - switch back useRealFreshWaterFlux (no problem anymore with run-off);
744        and turn on exactConserve; update (fwd) output.
745    o pkg/seaice (LSR):
746      - print to STDOUT number of solver iterations at SEAICE_monFreq interval.
747      - modify solver to deal cleanly with u/v switch at face edges (CS-grid):
748        * identical results with non-CS topology (but save up to half of EXCH calls)
749        * no much changes in cs-32 verification tests since no ice at face edges
750         (differences due to convergence criteria, since nb of iterations changed)
751        * expect some differences on lat-lon-cap grid.
752        update FWD results of global_ocean.cs32x15 test exp. (icedyn & seaice)
753    o pkg/exch2:
754      - add new CPP option to disable Cumul-Sum matrix (to save storage when using
755        many tiles); until alternative coding is added, just add a stop.
756    o pkg/kpp:
757      - move ptracer/salt correction to KPP diffusivity from calc_3d_diffusivity.F
758        to S/R KPP_CALC_DIFF_PTR (+ add tracer-index to argument list).
759    o optfiles:
760      - merged few MPI specific (*+mpi*) and multi-threads specific (*+mth) optfiles
761        into corresponding standard one, which now support different build:
762        (when using "genmake2 -mpi" for MPI built, "genmake2 -omp" for OpenMP built)
763      - add "darwin_amd64_gfortran" optfile (initially from Constantinos, tested by Gael)
764    o pkg/obcs (seaice):
765      - add missing EXCH for uIce,vIce after applying OBCS;
766      - remove S/R EXF_SWAPFFIELDS_X/Y , disable S/R EXF_SET_OBCS_X/Y by adding
767        argument = number of levels to S/R EXF_SWAPFFIELDS_XZ/YZ and S/R
768        EXF_SET_OBCS_XZ/YZ ; update obcs_exf_load.F;
769      - fix EXF_SET_OBCS_XZ/YZ for multi-threaded (assuming loaded arrays are shared)
770      - verification exp. seaice_obcs: split domain in 2 tiles ; add SIZE.h_mpi
771        and eedata.mth for MPI and mutlti-threaded testing.
772    o pkg/flt:
773      - make FLT EXCH working with multi-threads (and MPI + multi-threads);
774      - use buffer for floats IO (trajectories & profiles); size set in FLT_SIZE.h;
775      - fix pickup and trajectories + profiles output with multi-threads;
776      - add parameter to select group of fields to write along trajectory and
777        profile (default unchanged);
778      - only call PORT_RAND* function when flt_noise <> 0;
779      - add multi-threaded test for verification exp. flt_example.
780    o eesupp/src:
781      - fix S/R ALL_PROC_DIE for MPI+multi-threads.
782      - USE_OMP_THREADING: check that number of threads (from eedata) matches
783        actual number (from env.var. setting).
784    o pkg/ebm:
785      - fix multi-threading in ebm_area_t.F ; clean-up EBM.h header file.
786      - add multi-threaded test for verification exp. global_ocean_ebm
787    
788    checkpoint63b (2011/08/29)
789    o pkg/ebm:
790      - fix sign of runoff;
791      - update directly forcing fields (Qnet,EmPmR) to use standard
792        external_forcing_surf.F (remove ebm_forcing_surf.F);
793      - avoid loading forcing fields a 2nd time (1rst time from ini_forcing.F);
794      - set either tauThetaClimRelax (in data) or tauThetaZonRelax (in data.ebm)
795        and apply relaxation towards corresponding SST field (2-D map or ZonAver).
796      - update global_ocean_ebm parameters file data and update output (fwd+ad).
797    o verification/matrix_example:
798      - split domain in 8 tiles (2x4); add SIZE.h_mpi and eedata.mth for
799        MPI and mutlti-threaded testing.
800    o pkg/matrix:
801      - change name of S/R MATRIX_INIT to S/R MATRIX_INIT_VARIA ;
802      - fix for multi-tiles (add bi,bj indices to exp/impMatrixCounter);
803      - fix for multi-threaded (remove DATA statement);
804      - use standard DIFFERENT_MULTIPLE function;
805      - add MATRIX_OPTIONS.h
806    o verification/matrix_example:
807       To allow to split the domain in several tiles, change the domain size
808        from 31x31 to 32x32 by adding 1 row (on Southern side) + 1 column (on
809        Western side) of land points.
810    o (*_)write_pickup:
811      - fix few bugs in mypackage_read/write_pickup.F
812      - in MDS_WR_METAFILES calls, replace "myTime" by a local copy into
813        array of length 1 (was caught by compiler syntax-check).
814    o pkg/diagnostics (velocity potential solver):
815      - fix initialisation of main diagonal matrix (for overlap values)
816    o tools/build_options:
817      - towards single optfile for MPI and non-MPI built: merge few +mpi optfile
818        into previously non MPI one (linux_am64 pgf77,open64,pathf90,ifort11)
819      - linux_amd64_gfortran: merge +mpi_generic version into standard optfile:
820        * move IEEE flags to DEVEL section; take IEEE flags from +mpi_generic ;
821        * FAST case: for now, keep -O3 with ini_masks_etc.F in NOOPTFILES list;
822        and use "-devel" testreport option for standard testing on baudelaire.
823    o pkg/grdchk:
824      - Assume that all gradient-check position are within the same tile
825        corresponding to global indices (iGloTile,jGloTile) and that
826        positions (i,j indices or nbeg) are local to this tile;
827      - set tile local-indices and proc. number according to tile global-indices;
828      - remove grdchkwhichproc from namelist (retired param);
829      - send adjoint gradient to all procs so that all procs print it to STDOUT;
830      - switch on MPI test for global_ocean.90x40x15 AD test experiment.
831    o adding package bbl (Bottom Boundary Layer)
832      description in MITgcm/pkg/bbl/bbl_description.tex
833      example/test experiment in MITgcm_contrib/bbl
834    o adjoint verifications
835      - changed 5 experiments to multi-tiles
836        * global_ocean.90x40x15
837        * obcs_ctrl
838        * offline_exf_seaice
839        * tutorial_dic_adjoffline
840        * tutorial_tracer_adjsens
841        changed reference output for those that crossed tile boundaries
842        (changed choices of gradient check positions)
843      - with same tiling, switch on MPI test for the last 4 (add SIZE.h_mpi)
844      - temporary bug fix in grdchk_loc.F for obcs
845    o genmake2 & testreport
846      - add target "obj" (just for OBJFILES files) to Makefile;
847      - add option to specify FEXTRAFLAGS on command line.
848    o pkg/mypackage:
849      - remove bi,bj arguments from argument list of S/R MYPACKAGE_CALC_RHS
850    
851    checkpoint63a (2011/08/02)
852    o pkg/diagnostics (velocity potential):
853      - fix velocity-potential calculation when using OBCS: balance net inflow
854        at each level (new S/R OBCS_DIAG_BALANCE).
855      - fix some of the problems with OBCS in stream-function calculation.
856    o pkg/exf/exf_readparms.F
857      - make treatment of optional namelists (EXF_NML_04, EXF_NML_SGRUNOFF,
858        EXF_NML_OBCS) more consistent, so that you need not have these lists
859        in data.exf when they are not used.
860    o optim/optim_readdata.F:
861      - add some output about obcs variables that might help debugging
862      - add a check about nvarlength
863    o pkg/ctrl: once again, fix computation of endrec in s/r ctrl_init_rec
864    o pkg/diagnostics (velocity potential):
865      - fix mask for OBCS (still problems in stream-function with OBCS);
866      - add specific parameter (default = main code CG2D params) for solver;
867      - in case of poor convergence, use solution corresponding to lowest residual.
868    o pkg/seaice/seaice_growth.F: small changes that permit vectorizable
869      adjoint code. In general statements like tmpscal=fld(i,j) are problematic
870      and should be avoided where possible.
871    o model/src (rStar):
872      - include r* effect on reference-state (PhiRef) in totPhiHyd
873        (so that it's really the potential anomaly at the cell center);
874        affect solution only if z* with full pressure in EOS.
875      - test-exp global_ocean.90x40x15: reduce viscA4 (was not stable) and
876        update output (because of z* in totPhiHyd and viscA4 changes);
877      - keep the previous diagnostics as "PHIHYDcR" (closer to potential anomaly
878        @ constant r) until interpolation at constant r is implemented.
879    o pkg/diagnostics
880      - fix RCENTER diagnostics in case cell center is not at interface middle
881    o add code for TEOS-10 (www.teos-10.org, McDougall et al. 2011). Use
882      this eos with eosType = 'TEOS10', in data (PARM01). This eos implies
883      that THETA and SALT are "conservative temperature" and "absolute
884      salinity"
885    o pkg/ctrl
886      - fix computation of endrec in s/r ctrl_init_rec
887      - ctrl_pack/unpack_*: remove unused variables and some obsolete code
888    o pkg/seaice/seaice_growth.F
889      - fix recomputation with FENTY_AREA_EXPANSION_CONTRACTION code,
890        remove then obsolete STORE directives
891      - fix STORE directives for tice and tices, so that only the
892        appropriate part of the fields are stored (and not the entire
893        field); update global_ocean.cs32x15.seaice AD output.
894      - cosmetic changes: adjust CPP flags and indentation for better
895        legibilty
896    o pkg/autodiff: add mnc-output of adBottomDragFld (code contributed by
897      Chris Wilson)
898    o pkg/gmredi:
899       Add Sub-Meso Eddies parameterisation from Baylor (for now, disabled with TAF),
900       and test it in verification exp. "front_relax.bvp" (update output.bvp.txt)
901    
902    checkpoint63  (2011/07/11)
903    o pkg/exch2:
904     - rename+move: nTiles in W2_EXCH2_PARAMS.h --> exch2_nTiles in W2_EXCH2_TOPOLOGY.h
905     - exch2 version of Cumul-Sum routine: S/R W2_SET_MAP_CUMSUM set up the
906       (2*nTiles)x(nTiles) Cumul-Sum matrix and Master Proc collects all tiles X,Y
907       increments, calculates Cumul-Sum @ tile origin and sends results to each tile.
908    o pkg/diagnostics:
909     - deal with pairs of post-processed diags which are computed together; in
910       particular, re-order list of diags within 1 file to save 2nd computation.
911     - add S/R to compute velocity stream-function (called after velocity-potential
912       calculation) from divergence free transport -> new diagnostics "PsiVEL".
913     - add parameter to select grid-point location where PsiVEL == 0.
914    o eesupp/src:
915       new S/R to calculate cumulated sum on tiled array, corner grid-cell location
916       (specific S/R needed with exch2 topology - for now, just print an error msg)
917    o pkg/shelfice
918     - Implement friction velocity-dependent transfer coefficients following
919       Holland and Jenkins, JPO, 1999
920       Original code by M. Losch with small modifs.
921       Enable with CPP option SHI_ALLOW_GAMMAFRICT
922       and runtime flag SHELFICEuseGammaFrict
923    o verification lab_sea & global_ocean.cs32x15:
924     - use tools/xmakedepend (instead of cyrus_makedepend, in genmake_local):
925       does not miss some dependencies (but is slower) and also works with many files
926       (default makedepend limitation for AD built).
927     - use cyrus_makedepend in adjustment.128x64x1 (so that it still tested).
928    o pkg/diagnostics:
929     - add run-time parameter "useMissingValue" (def=False) to fill land-point
930        (i.e., where mask=0) with MissingValue ; used only in MNC output file.
931       This replaces CPP-option DIAGNOSTICS_MISSING_VALUE.
932     - Extend the use of "missing_value" setting from data.diagnostics for the case
933       of counter-diagnostics (where fraction-weight is zero). This applies both to
934       MNC and MDS output files.
935    o pkg/seaice/seaice_growth.F:
936      - add 'a priori' cap of latent heat flux based on actual mass considerations
937        when SEAICE_ADD_SUBLIMATION_TO_FWBUDGET is used in conjunction with the
938        non-legacy seaice_solve4temp.
939      - add diagnostic of the residual sublimation freshwater flux (the freshwater
940        flux taken from the ocean if the total actual latent heat fluxes exceed
941        the maximum)
942      - remove the CPP switch around the *_FWbySublim unit change and move diagnostic
943       fill for SIatmQnt, SIfwSubl, SIatmFW to the end of seaice_growth.F.
944      - add diagnostic of the actual sublimation freshwater flux (that is 0. ifndef
945       SEAICE_ADD_SUBLIMATION_TO_FWBUDGET) and of the latent heat flux (evap+sublim).
946      - bug fix : frWtrAtm needs a_FWbySublim ifdef SEAICE_ADD_SUBLIMATION_TO_FWBUDGET.
947      - bug fix : missing part to Martin's r_FWbySublim pathological case fix.
948    o verification 1D_ocean_ice_column:
949       made model domain truly 1x1x23 instead of 5x5x23 with only center cell (3,3,:) wet
950       update results
951    o pkg/diagnostics:
952     - Implement setting of "Post-Processed" diagnostics (corresponding to gdiag(5)='P')
953       which are not filled-up but computed from other diags ; In this case, the mate
954       diag points to the primary (filled-up) diag to used for post processing.
955     - Update Velocity-potential computation using post-processed diag framework.
956     ==> Change the ordering of fields and time-periods in MDS output file
957       when using periodic averaging: now writes one time record with the full set
958       of fields for this time period, then the next time reccord (it used to be
959       one field with the full set of time records then the next field).
960         Note: this is now similar to NetCDF (MNC) output file. <==
961    
962    checkpoint62z (2011/06/21)
963    o adjoint monitor:
964     - Add adjoint monitor output for packages exf, seaice
965       and update relevant testreport output
966    o pkg/seaice:
967     - re-order diags inits so that they appear in order in available_diagnostics.log
968     - added diags: hsnow thermo. rates of change, area preceeding ridiging process,
969       area/heff/hsnow preceeding thermodynamic growth/melt.
970     - modified diag: SIdA; output actual effect, as the description states.
971     - modified description: SIqneti, SIqneto, SIuheff, SIvheff, SIdAb*, HSNOW.
972     - retired redundant diags: SIyneg, SIfice, SIsnwice, SIthdgrh.
973       (SIyneg->SIdHbOCN; SIfice->SIdHbATC; SIsnwice->SIdHbFLO;
974        and SIthdgrh->SIdHbOCN+SIdHbATC+SIdHbATO)
975     - modified diags (2) : switch all SIdA*, SIdH*, SIdS* from delta to rates.
976     - added diagnostics for seaice generic tracers (SItr*).
977     - added SItrUnit and SItrNameLong run time param (for SItr* diags).
978     - in diag names, replaced 'PrTh' abbrev. of 'preceeding thermo' with 'PT'.
979     I. Fenty: 18-Jun-2011:
980     Minor changes to seaice package:
981     1) Retired old variables (A22, SEAICE_lhsublim, areaMax, areaMin, hiceMin) and
982        added some new ones (SEAICE_area_reg, SEAICE_hice_reg, SEAICE_area_floor)
983       - Differentiated "regularization variables" from "floor variables"
984        * areaMin became SEAICE_area_reg (old A22) and SEAICE_area_floor
985        * hiceMin became SEAICE_hice_reg (old hiceMin)
986          (with _reg meaning regularization variable)
987       - SEAICE_lhSublim becomes lhSublim, the sum of SEAICE_lhEvap and SEAICE_lhFusion
988        so as to ensure energy conservation when going between phases
989      - A22 was not used anywhere
990     2) Changed regularization procedure for heffActual and hsnowActual to ensure
991        well-boundedness and smooth adjoint in seaice_growth.F
992     3) Fixed a bug where seaice_solve4temp would not recognize ice-free grid cells
993        because the old regularization always set heffActual >= 0.05 cm
994     4) Changed the model so that the default behavior is to put a small (10^-5) "floor"
995        on AREA when HEFF > 0.
996      - went from requiring ALLOW_PRECLUDE_INFINITESIMAL_AREA to be defined to
997        requiring that DISABLE_AREA_FLOOR *not* be defined
998     Affected verifications:
999      - 1D_ocean_ice_column (output.txt output_adm.txt)
1000      - global_ocean.cs32x15 (output.seaice.txt output_adm.seaice.txt)
1001    o pkg/diagnostics:
1002      - move MNC code from diagnostics_out.F into new diagnostics_mnc_out.F (2 S/R).
1003      - rename S/R GETDIAG to DIAGNOSTICS_GET_DIAG and change type of 1rst argument
1004        (was _RL, now integer) with option = 0 to retrieve all levels.
1005      - add pieces of code to compute velocity potential at each level (new diagnostics
1006        PhiVEL, works only when UVELMASS & VVELMASS are also turned on);
1007        for now, using same params as CG2D (target-resisual, max Nb of iter ...).
1008      - fix few issues with counter diagnostics in diagnostics_setdiag.F &
1009        diagstats_setdiag.F (if diagnostic counter is itself a counter diag)
1010        and in diagnostics_fract_fill.F (do not need a valid pointer for the
1011        diagnostics counter-mate); check that definition of counter-diagnostic
1012        includes a valid counter-mate (in diagnostics_set_levels.F).
1013    o model/src (rStar):
1014      - add rStar scaling factor in diags_phi_hyd.F (similar to calc_grad_phi_hyd.F);
1015        affect solution only if z* with full pressure in EOS;
1016        update output of test-exp global_ocean.90x40x15.
1017    o pkg/seaice:
1018      - introduce siEps=1e-5 parameter
1019      - use areaMax in AREA update (part 4), consistent with ridging step (part 2.5).
1020      - re-organize SEAICE_ADD_SUBLIMATION_TO_FWBUDGET code.
1021      - introduce ALLOW_SITRACER and seaice_tracer_phys.F to handle generic seaice tracer.
1022        For now it covers, and was tested for, ice salinity and age (attached to HEFF),
1023        as well as ice cover age and ridging index (attached to AREA).
1024        For now the run time parameters (in data.seaice/SEAICE_PARM03) are
1025        SItrName (e.g. 'age') and SItrMate ('HEFF', which is the default, or 'AREA').
1026        Up to SItrMaxNum=3 tracers can be used simultaneously.
1027    o pkg/salt_plume:
1028      -introduce SPsalFRAC run time parameter that sets the fraction of the
1029       salt by-product of ice growth (SPsalFRAC*(1-SIsalFRAC)*salt typically)
1030       that gets vertically redistributed (fluxed down) by pkg/salt_plume.
1031    o model debug options:
1032      - Switch reading of debugMode from S/R INI_PARMS (parameter file "data", stored
1033        in PARAMS.h) to S/R EESET_PARMS (parameter file "eedata", stored in EEPARAMS.h).
1034      - Refine debug-msg printing selection (3 new levels):
1035        debugMode  : controls printing of debug messages (sequence of S/R calls).
1036        debugLevel : controls printing of algorithm-relevant auxiliary/debug messages
1037         debLevZero =  0 ; /* level of disabled aux. msg printing */
1038         debLevA =  1 ; /* level of minimum  aux. msg printing */
1039         debLevB =  2 ; /* level of low aux. print (report read-file opening)*/
1040         debLevC =  3 ; /* level of moderate debug prt (most pkgs debug msg) */
1041         debLevD =  4 ; /* level of enhanced debug prt (add DEBUG_STATS prt) */
1042         debLevE =  5 ; /* level of extensive debug printing */
1043        New debugLevel default: with default debugMode value (=F),
1044          = 2 (debLevB) or = 1 (debLevA) in case ALLOW_AUTODIFF is defined.;
1045          and if debugMode=T, default debugLevel = 4 (debLevD).
1046        Relation with previous settings:
1047         debLevB (=2) corresponds to former debLevA (=1)
1048         debLevD (=4) corresponds to former debLevB (=2)
1049        Note:
1050         a) if debugLevel=0, skip WRITE_GRID call when nIter0 > 0 (same as before);
1051         b) default debugLevel=1 is convenient in AD runs (avoid many file opening msgs);
1052            to recover previous default, set debugLevel=2 (e.g. AD-test hs94.1x64x5)
1053      - Add new parameter (printResidualFreq, read from PARM02 namelist) to print
1054        detailed CG solvers convergence; off (=0) by default, except if debugLevel=5.
1055    o pkg/obcs:
1056      - change OBCSfixTopo default from True to False (should not change the results);
1057        keep OBCSfixTopo=T in verification-exp. seaice_obcs.
1058    o pkg/thsice:
1059      - fix bug in thsice_calc_thickn.F (was introduced in version 1.18) in
1060        2nd layer seaice sublimation (unlikely to happen)
1061      - use Interior mask for OBCS in thsice_advection.F (similar to what is
1062        done in gad_advection & seaice_advection).
1063    o adjoint:
1064      bug fix spotted by Gael Forget:
1065      seaice_advection and thsice_advection still had
1066      legacy CPP options to avoid CS corner updates for adjoint
1067    o pkg/seaice:
1068      => Change some of the defaults (2011/05/29):
1069         - change SEAICEuseFluxForm default (from False to True)
1070         - change DIFF1 default (from 0.004 m/s to 0. m/s)
1071         And print warnings if DIFF1 is not set in data.seaice and centered
1072          avection scheme is used without any diffusion.
1073      also:
1074      - fix seaice_diffusion calls in default AdvScheme part of seaice_advdiff.F;
1075      - set SEAICEdiffKh[] default in the same way as SEAICEadvSch[]
1076      - stop if DIFF1<>0 with SEAICEadvScheme <> 2, if DIFF1<>0 with any
1077        other non-zero SEAICEdiffKh[] diffusivity, if SEAICEadvSalt=T with
1078        #undef SEAICE_VARIABLE_SALINITY, if SEAICEadvAge=T with #undef SEAICE_AGE.
1079      update results of test exp.:
1080         lab_sea: output.fd (switch to AdvScheme=33 with diffKh=20)
1081             output.hb87, output_adm.evp (SEAICEuseFluxForm=T and diffKh=200)
1082             output_adm.noseaicedyn (SEAICEuseFluxForm=T)
1083         offline_exf_seaice: output.seaicetd, output_adm (SEAICEuseFluxForm=T)
1084         seaice_obcs: output (SEAICEuseFluxForm=T)
1085      and prescribe old default for SEAICEuseFluxForm (=F) and DIFF1 (=0.004)
1086          for standard fwd & AD lab_sea tests (to keep the same output).
1087    o pkg/seaice/seaice_growth.F:
1088      - use Ian Fenty's capping formulas for actual ice
1089      thickness thoughout EVOLUTION branch.
1090      - put treatment pathological case #2) in CPP brackets
1091      (ALLOW_AVOID_INFINITESIMAL_AREA, undef by default).
1092      - update global_ocean.cs32x15 and 1D_ocean_ice_colum results accordingly.
1093    o pkg/seaice:
1094      - seaice_diffusion.F : remove the min(DX,DY) factor permanently;
1095      pass the Laplacian diffusivity (in m^2/s) diffKh as a parameter;
1096      also pass fac as a param, which can be 1. (to update the tendency
1097      field) or the time step (to update the field itself).
1098      - seaice_advdiff.F: for multidim, call seaice_diffusion with
1099      e.g. SEAICEdiffKhHeff and with fac=1; for single-dim, call
1100      seaice_diffusion with e.g. SEAICEdiffKhHeff and with fac=time step.
1101      - SEAICE_PARAMS.h, seaice_readparms.F, seaice_check.F :
1102      hooks to handle SEAICEdiffKhHeff, SEAICEdiffKhArea, etc.
1103    o pkg/seaice:
1104      diffusion with centered advection scheme (diffus.F & advect.F):
1105      - simplify S/R DIFFUS (put deltaT & DIFF1 factor outside, move EXCH outside)
1106        to just compute the laplacian of input-field.
1107      - unroll k loop (harmonic,biharmonic diff) in advect.F to save 1 exch call.
1108      - fix flux-form version in diffus.F to conserve tracer.
1109      update output of lab_sea.fd & lab_sea.hb87 (1rst set of modif affects
1110       machine truncation) and lab_sea.salt_plume (conservative flux-form modif)
1111    
1112    checkpoint62y (2011/05/26)
1113    o pkg/seaice:
1114     - seaice_growth.F : in EVOLUTION branch, always include
1115       a_QSWbyATM_cover in qnet (as it should be).
1116     - verification/global_ocean.cs32x15 : update results accordingly
1117       (output.seaice.txt output_adm.seaice.txt).
1118    o pkg/seaice + obcs:
1119     - use maskInW & maskInS in multi-dim advection and biharmonic diffusion:
1120       equivalent of assuming no tracer gradient outside the OB region.
1121       update output of seaice_obcs (uses DIFF1 <>0 => biharmonic diffusion)
1122     - remove calls to OBCS_COPY_TRACER after EXCH calls (no longer needed
1123       after changes above);
1124     - obcs+seaice cleaning: apply seaice-tracer OB values to tracer field
1125       only at OB location (instead of over a band of OLx width).
1126    o pkg/seaice:
1127     - fix wrong indices in old (non Flux-Form) diffusion default S/R diffus.F
1128       (dxG(I+1, ...) changed to dxG(I, ...), no impact on Lat-Lon grid)
1129    o pkg/obcs:
1130      - split header file "OBCS.h" into 4 separated files:
1131        OBCS_PARAMS.h, OBCS_GRID.h, OBCS_FIELDS.h & OBCS_SEAICE.h
1132       Note: OBCS_PARAMS.h & OBCS_GRID.h can be included without OBCS_OPTIONS.h
1133         (contain no conditional statement which depends on OBCS options).
1134      - move "useOBCSYearlyFields" from "data.obcs" (hold in OBCS_PARAMS.h)
1135        to parameter file "data.exf", namelist EXF_NML_OBCS (in EXF_PARAM.h).
1136    o ctrl, cost, grdchk & autodiff pkgs:
1137      - make options file more standard (like other {PKG}_OPTIONS.h file but
1138        with AD_CONFIG.h); clean-up some of the included header files.
1139    o pkg/obcs:
1140      - do not mask tracer when applying OB (tracer == 0 could generate problems)
1141      - apply tracer OB values to tracer field only at OB location (instead of
1142        over a band of OLx width)
1143      - clean-up obcs_apply_w.F & obcs_apply_eta.F (since less calls to these S/R)
1144      - remove OBCS_MULTIDIM_OLD_VERSION code in gad_advection.F and remove
1145        obcs_apply_tloc.F & obcs_apply_sloc.F
1146    o obcs in model/src:
1147      - call OBCS_APPLY_W only if NonHydrostatic.
1148      - call OBCS_APPLY_ETA only if NonLinFreeSurf.
1149      - reset dEtaHdt and wVel to zero outside OB interior region ;
1150      - leave tracer unchanged outside OB interior region: This has no effect
1151        on the solution but just to prevent unrealistic tracer value outside OB.
1152      - zero out velocity outside OB interior region: This has no effect on
1153        the solution but just to prevent unrealistic velocity outside OB.
1154    o obcs and non-lin free-surf:
1155       move call to OBCS_APPLY_R_STAR from update_r_star.F to calc_r_star.F
1156       and call to OBCS_APPLY_SURF_DR from update_surf_dr.F to calc_surf_dr.F
1157       + add argument "etaFld" to OBCS_APPLY_R_STAR & OBCS_APPLY_SURF_DR:
1158       this fixes missing EXCH + get consistent eta OB value (+ fix restart).
1159       update results of test-exp. exp4(nlfs).
1160    o exp4 (nlfs) test-exp:
1161       use OBC for Eta at Western & Eastern OB (to test prescribing Eta
1162       with NonLin-FreeSurf); update output.nlfs.txt
1163    o obcs and 2d/3d solver norm:
1164       use interior masks (maskInC) to cancel out cg2d & cg3d matrix coeff at OB
1165       and outside OB interior region (will allow to place OB further inside the
1166       domain). Depending on the domain, can affects cg2d-Norm (previous
1167       cancellation outside OB was only partial), e.g. in exp4 & obcs_ctrl,
1168       and cg3d-Norm (previous Norm was computed before canceling OB terms),
1169       e.g. in tutorial_plume_on_slope.
1170      - update output of exp.: exp4 (x2), obcs_ctrl and tutorial_plume_on_slope.
1171    o pkg rbcs:
1172      - split RBCS.h into 3 files: RBCS_SIZE.h, RBCS_PARAMS.h & RBCS_FIELDS.h
1173      - add capability to apply relaxation to horizontal velocity uVel & vVel.
1174    o pkg/grdchk: add gradient check for control variable xx_shifwflx
1175    o pkg/shelfice/shelfice_init_fixed.F
1176      fix CPP-flag combinations
1177    o pkg/seaice: Merge iceage code of Pierre Rampal
1178      * update/change/correct ice age calculations
1179      * add age updates for pathological cases
1180      Probably needs more testing...
1181    
1182    checkpoint62x (2011/05/13)
1183    o pkg/mom_vecinv:
1184       high-order vorticity scheme: use interior masks (maskInW & S)
1185       to zero-out (outside OB) gradient of vorticity.
1186    o verification exp.:
1187       turn on "useEnergyConservingCoriolis" (better discretisation) in exp.
1188       hs94.128x64x5 and seaice_obcs ; update results.
1189    o pkg/obcs:
1190      fix bug in OBeta for YZ sections in obcs_exf_load.F
1191    o pkg/ctrl, pkg/shelfice, and optim:
1192      - add new control variable xx_shifwflx (fresh water flux underneath ice
1193        shelves). This is almost as tedious as obcs-ctrl, because the
1194        variables needs its own mask.
1195      - add a cost function term that penalizes the deviation of xx_shifwflx
1196        from the first guess (zero) in analogy to other control variables
1197    o pkg/shelfice:
1198      - start basic adjoint
1199    o pkg/ctrl:
1200      - remove extra 2D field "for good measure" when initializing in
1201        ctrl_set_globfld_[xy/xz/yz].F
1202      - replace hard coded precision 32 (a bug) in ctrl_map_ini_gen by ctrlprec
1203      - improve error messages in ctrl_set_unpack_*
1204    o OBC implementation in momentum:
1205       use interior masks (maskInC,W & S) in momentum S/R:
1206       - multiply divergence, tension and some del^i.u or del^j.v by maskInC
1207       - multiply del2u,del2v by maskInW/S (biharmonic viscosity)
1208       - multiply horiz. grad of vorticity by maskInW/S (in Leith scheme)
1209       - multiply gradient of wVel by maskInW/S in del2w calculation (NonHyd)
1210       Motivation: fix/clean implementation of OBC with biharmonic-viscosity
1211        (and also with Leith/Smagorinsky harmonic-viscosity).
1212       Update output of experiment dome and exp4 (+nlfs).
1213    o exp4 test-exp:
1214      - turn on: nonHydrostatic, exactConserv, viscA4 (with momDissip_In_AB=F)
1215        and prescribe time-varying OB (without pkg/exf) for zonal-velocity
1216        at Western & Eastern Boundaries (+/- 1 per-cent); Also prescribe
1217        time-varying OB at Western-side for wVel (NonHyd); update output.
1218      - add secondary set-up (.nlfs) using NonLin FreeSurf (z*) + mom_vecinv
1219        and biharmonic-viscosity ; also use prescribed time varying OB.
1220    o pkg/obcs:
1221      fix bug in OBWeta,OBWeta indices in obcs_apply_r_star.F
1222    o model/src:
1223      - fix startTime setting when baseTime<>0 & nIter0=0 are specified ;
1224      - initialise startTime & nIter0 with unlikely values: allows to set one
1225        from the other without ambiguity.
1226    o seaice_obcs test-exp.:
1227      add small diffK4T,S to test biharmonic diffusivity with OBCS ; update output.
1228    o pkg/obcs:
1229      - remove calls to OBCS_COPY_TRACER after EXCH for T,S & pTracer:
1230        no longer needed with maskInC,W,S in pkg/generic_advdiff.
1231    o pkg/seaice:
1232      - retired SEAICE_SALINITY and SEAICE_salinity in favor of
1233        SEAICE_VARIABLE_SALINITY and SIsalFRAC, respectively.
1234      - fixed bug in the initialization of sea ice salinity variable HSALT
1235        in seaice_init_varia.F  (removed dependence on ICE2WATR)
1236    o fizhi-cs test exp.:
1237       switch reference output convention for these 2 non-standard test-exp,
1238        from: pgi  6.1-5 on faulks (FC.6, -of linux_ia32_pgf77+authors_fc5)
1239          to: ifort 11.1 on baudelaire (FC.13, -of linux_amd64_ifort11)
1240       reason: faulks might get retired soon and pkg/fizhi has still Pb with gfortran
1241    o model/inc:
1242      - change type of PmEpR array (from _RS to _RL) to fix restart (with "-use_r4")
1243        of exp. global_ocean.90x40x15 (Suncronous time-stepping + Real-FW + NonLin-FS)
1244    o pkg/seaice:
1245      - fix calculation of saltFlux and saltPlumeFlux when using SEAICE_SALINITY
1246    o verification/lab_sea, 1D_ocean_ice_column, seaice_obcs, global_ocean.cs32x15
1247      - updated output*.txt files due to bug fixes in salt, saltPlumeFlux,
1248        and initial HSALT
1249    
1250    checkpoint62w (2011/04/26)
1251    o pkg/mom_fluxform:
1252      - fix calculation of del2u & del2v (no-slip BC) when using Non-Lin Free-Surf.
1253      - use parameter "sideDragFactor" in no-slip BC side-drag part.
1254      - update output of exp. global_ocean.90x40x15
1255    o pkg/mom_vecinv:
1256      mask del2u & del2v (no effect on results, but cleaner & closer to mom_fluxform)
1257    o update seaice exp.:
1258      use more consistent parameter values (remove "backward compatability only":
1259       ICE2WATR, SEAICE_lhSublim, SEAICE_cpAir, SEAICE_rhoAir + set rhoConstFresh)
1260      related to thermodynamics seaice. Update output (fwd+AD) of exp.:
1261       1D_ocean_ice_column (x2), lab_sea (x8), ioffline_exf_seaice (x2) & seaice_obcs
1262    o update test-exp global_ocean.90x40x15:
1263      o use default CD_CODE_OPTIONS file (Adams-Bashforth on CD Mom & Coriolis).
1264      o increase Overlap size from 2 to 3 (to allow to test bi-harmonic Visc.)
1265      o new pickup-files from a 100.yr run with pkg/down_slope (input.dwnslp params)
1266      o turn on zStar & viscA4 in standard set-up (dir input/)
1267        and update output files: output.txt & output.dwnslp.txt
1268    o new AD-test experiment: obcs_ctrl
1269      (From Matt MITgcm_Contrib/SOSE/BoxAdj) to test OBCS as control vector.
1270    o pkg/dic:
1271      fix two bugs in handling water vapour pressure in carbonate chemistry
1272      and air-sea fluxes. Found by Val Bennington and Galen McKinley
1273      (add DIC Option = WATERVAP_BUG to recover old results)
1274      update output of tutorial_global_oce_biogeo (fwd+AD) & tutorial_dic_adjoffline
1275    o adding allowInteriorFreezing option to check for water below freezing point
1276      at depth and bring the negative heat anomaly to the surface level
1277    o pkgs _fields_load:
1278      - extend GET_PERIODIC_INTERVAL to deal with non-periodic case (from pkg/rbcs)
1279      - use new S/R GET_PERIODIC_INTERVAL in pkgs:
1280        bulk_force, cheapaml, cfc, dic, obcs (+ ctrl/ctrl_get_gen_rec), offline and
1281        rbcs to get interpolation weights and time reccord number.
1282      - fix multi-threading in aim_fields_load.F
1283      - apply EXCH to temp arrays [0,1] after reading in dic_fields_load.F
1284    o external_fields_load:
1285      new S/R GET_PERIODIC_INTERVAL to calculate which time-record (and linear
1286       interpolation weights) to use in a periodic time-series ; do not divide by
1287       time-step to convert to integer:
1288       - this fixes case where externForcingPeriod is not multiple of time-step
1289          (Thanks to Christopher L. Wolfe)
1290       - this fixes case where externForcingPeriod is an odd multiple of time-step
1291         (was wrong by half of time-step); update results of tutorial_global_oce_in_p.
1292      store index of time-record which is currently loaded:
1293       - works without any assumption on sequence of calls to EXTERNAL_FIELDS_LOAD ;
1294       - needed for the adjoint but not yet used because of extensive recomputations;
1295         (to be fixed soon)
1296    
1297    checkpoint62v (2011/04/02)
1298    o verification/1D_ocean_ice_column added to test Ian Fenty's
1299      pkg/seaice_growth.F modifications for improving sea ice code differentiability
1300    o update output of exp4, internal_wave, seaice_obcs, tutorial_plume_on_slope
1301      (new velocity statistics after changing maskInW & maskInS definition)
1302    o pkg/generic_advdiff with OBCS:
1303      use maksInW & maskInS in advective flux and in biharmonic diffusion calculation:
1304      equivalent to assumption of no tracer gradient outside the OB region.
1305      This will affect the results if using obcs+biharmonic diffusion.
1306      update output_adm.txt of experiment bottom_ctrl_5x5 (not expected since no obc)
1307    o pkg/obcs:
1308      change definition of maskInW & maskInS: leave OB edges inside (maskIn=1)
1309      (e.g., maskInW(OB_Ie)=1 ) so that velocity normal-component at OB is still
1310      in Interior region. No impact on solution but affects Velocity monitor stats.
1311    o pkg/ptracers (adjoint)
1312      New option AUTODIFF_PTRACERS_SPLIT_FILES for writing separate
1313      tape file for each tracer
1314    o model/inc/src and pkg/autodiff: add parameters that allow to turn
1315      of parts of the adjoint code at run time. For now, there are only
1316      useKPPinAdMode, useGMrediInAdMode, and useSEAICEinAdMode. These
1317      parameters are set in data.pkg.
1318      This is the lazy coward's version of doing this, but still useful for
1319      debugging. In order to do it right, everything needs to be moved to
1320      pkg/autodiff.
1321    o pkg/autodiff: fix global_sum_tile_ad.F by resetting adsumPhi at
1322      the end; this fixes the adjoint balancing code for open boundaries.
1323    o pkg/ctrl:
1324      - change behavior of xx_${varname}period to be analogous to exf-conventions:
1325        xx_${varname}period =   0.,  means time-independent control part
1326        xx_${varname}period = -12., means one-year-periodic monthly control part
1327      - introduce helper routine ctrl_init_rec (part of ctrl_init.F) to
1328        clean up ctrl_init a little, remove unused variables
1329      - ctrl_init: fixed the handling of the start/endrec for obcs-variables
1330      - move "call cal_GetMonthsRec" from s/r ctrl_get_gen to s/r ctrl_get_gen_rec
1331    
1332    checkpoint62u (2011/03/15)
1333    o model/src:
1334      - for the adjoint, change NonLin-FreeSurf initialisation sequence: fill-in
1335        h0Fac from INITIALISE_FIXED and reset hFac to h0Fac in INITIALISE_VARIA ;
1336      - in initialise_varia.F (except for ALLOW_DEPTH_CONTROL) remove 2nd call to
1337        INI_DEPTHS, INI_MASKS_ETC & INI_LINEAR_PHISURF.
1338    o pkg/ctrl/obcs/ecco:
1339      - remove obsolete, unused, and partially broken code:
1340        ctrl_obcsvol/ctrl_obcsbal/ctrl_volflux and code within
1341        ALLOW_CTRL_OBCS_BALANCE
1342      - put a stop statement into ecco/cost_obcsvol.F, but also add
1343        cost_obcsvol to ecco_ad_diff.list
1344    o pkg/ecco: fix counting cost function contributions for obcs (code
1345      by Matt M.) and diffkr for diagnostics
1346    o pkg/ecco, pkg/ctrl, pkg/grdchk:
1347      add cost penalty terms for initial uvel, vvel, eta controls
1348      and I/O for prior error files
1349    o pkg/mdsio:
1350       move mds_check4file.F from eesupp/src to mdsio_check4file.F ; add option
1351       (new argument) to check for tiled file in mdsioLocalDir : this fix the
1352       restart from pickup_som , pickup_dic (& dic_co2atm) with mdsioLocalDir.
1353    o pkg/ctrl:
1354     - ctrl_obcsbal.F, ctrl_obcsvol.F: replace last calls of ctrl_getrec by
1355       ctrl_get_gen_rec, put a stop statement into ctrl_getrec. Remove
1356       unused and superfluous variables
1357     - ctrl_get_gen_rec.F: catch the case of xx_genperiod=0.
1358    o pkg/ecco
1359     - enable adjoint of Stevens OB
1360    o pkg/ctrl/ecco/grdchk:
1361      - remove global declaration of tmpfldx/yz and tmpfldx/yz2.
1362        Fortunately, we do not have any tests for the numerous cpp-flagged
1363        option of "obcs as control parameters" so we will never know
1364        if this is an improvement (but at least now things compile).
1365      - remove an obsolete initialization from ecco_cost_init_barfiles.F
1366      - fix some problems within never used ifdefs to make the code compile
1367    o pkg/obcs:
1368     - Refine Interior mask definition to work with more complex OB (e.g.
1369       if OB_Ie < OB_Iw); In case default setting is not sufficient, allows to
1370       read in Interior mask from file. Check if Interior mask is consistent
1371       with OB list of indices.
1372    o pkg/seaice
1373     - beginning code for a seaice tracer package,
1374       but currently only used for seaice age: SEAICE_AGE
1375       SEAICE_num = 4
1376       iTracer = 1: area-weighted ice age
1377               = 2: volume-weighted ice age
1378               = 3, 4: template for one-year vs. multi-year ice
1379       data.seaice has new namelist SEAICE_PARM03 for arrays related to
1380       SEAICE_num
1381    
1382    checkpoint62t (2011/03/05)
1383    o pkg/obcs:
1384     - obcs_apply_uv.F: change to a 2 steps method, first tangential component;
1385       then normal component. This ensures that the normal component is set
1386       correctly even when it conficts with tangential setting from an other OB.
1387       Affects results of test-experiment seaice_obcs: update the output.txt
1388    o pkg/obcs:
1389     - add code to monitor statistics of dynamical fields at OB.
1390     - take OBCS_BALANCE code out of obcs_calc.F into new S/R OBCS_BALANCE_FLOW :
1391       - fix to OBCS_BALANCE code (right hFac ; deal with simple OB intersection).
1392       - change default: balance the Net inflow through all OB (instead of balancing
1393         each OB separately); keep the old method if setting OBC_balanceFacX < 0.
1394     - switch on useOBCSbalance in dome experiment: only correct Western OB outflow
1395       to match Nortern OB inflow (OBCS_balanceFacN=0).
1396    o pkg/seaice:
1397     - redefined actual sea ice age to be ICEAGE/HEFF ifdef SEAICE_AGE_VOL
1398    o pkg/seaice (seaice_growth v 1.113):
1399     - reverting seaice_growth to v 1.111 in order to have code with exact bit
1400       compatibility with MITgcm_contrib/ifenty/Fenty_seaice_thermo_code_merge
1401       CPP option SEAICE_OCN_MELT_ACT_ON_AREA removed in v 1.112 is reintroduced
1402       runtime flag SEAICEareaFormula is kept but is inactive
1403    o model/src:
1404     - add new param to scale curvilinear grid distance and area when using
1405       a different sphere radius from the grid-files.
1406     - test/check multi-threads EXCH applied to local variable (cg2d_x)
1407    o adjoint:
1408     - enable adjoint of Stevens OB
1409     - add dummy_in_dynamics to enable extraction of ADJrhoinsitu
1410       (a bit delicate because of potentially modified adj. common block structure;
1411       current switch is ALLOW_AUTODIFF_MONITOR_DIAG, could be changed later)
1412    
1413    checkpoint62s (2011/02/15)
1414    o pkg/seaice (seaice_growth v 1.112):
1415     - introduce SEAICEareaFormula run time parameter, which selects the recipe for
1416       computing the ice cover tendency from effective thickness tendencies. Include
1417       Ian Fenty's formula.
1418     - remove 'undef SEAICE_OCN_MELT_ACT_ON_AREA' which may now be achieved using
1419       SEAICEareaFormula.
1420     - simplify notations for the various d_HEFF/d_AREA terms.
1421    o pkg/gmredi:
1422     - add Boundary-Value-Problem bolus transport (Ferrari etal, OM 2010) code
1423       from Christopher Wolfe (UCSD); add partial cell factor in vertical derivative;
1424       add a verification test-run (front_relax.bvp) to test GM_useBVP.
1425    o pkg/seaice (seaice_growth v 1.111):
1426     - for SEAICE_DO_OPEN_WATER_GROWTH, replace Gael's implementation with Ian's.
1427     - the new SEAICE_DO_OPEN_WATER_MELT allows open-water air-sea heat fluxes to
1428       also melt ice.
1429    o pkg/seaice:
1430     - McPhee formula for Ice-Ocean fluxes (provided by Ian Fenty).
1431     - can be used by #define MCPHEE_OCEAN_ICE_HEAT_FLUX in SEAICE_OPTIONS.h
1432    o pkg/cheapaml:
1433     - from Nico Wienders: New version of this package.
1434    o pkg/flt:
1435     - add CPP options to prevent floats to re-enter the opposite side of
1436       a periodic domain (default: keep periodicity)
1437  o pkg/gmredi:  o pkg/gmredi:
1438   - apply exchange to GM_PsiX,GM_PsiY to get valid values near CS-corners   - apply exchange to GM_PsiX,GM_PsiY to get valid values near CS-corners
1439     (needed for multi-dim advection).     (needed for multi-dim advection).
1440     - switch on GM Advective form in global_ocean.cs32x15 and update output.txt
1441  o model/src:  o model/src:
1442   - fix wrong re-setting of addMass array (ALLOW_ADDFLUID) for atmospheric run.   - fix wrong re-setting of addMass array (ALLOW_ADDFLUID) for atmospheric run.
1443    o tutorial_tracer_adjsens
1444     - extend to NLFS and replace maskC by hFacC
1445       (change reference output accordingly)
1446    
1447  checkpoint62r (2011/01/24)  checkpoint62r (2011/01/24)
1448  o testreport:  o testreport:

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