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revision 1.1540 by jmc, Thu Dec 1 19:33:51 2011 UTC revision 1.1638 by jmc, Tue Mar 27 15:53:56 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/fizhi:
8        clean-up turbulence cold-start switch: decided in fizhi_init_vars.F, stored
9        in common bloc (fizhi_coms.h) and then passed as argument up to S/R TURBIO.
10    o pkg/exch2:
11      - add argument "updateCorners" to S/R exch2_get_uv_bounds (enable to
12        activate EXCH_IGNORE_CORNERS in vector EXCH S/R).
13      - switch 1rst EXCH call to IGNORE_CORNERS (instead of UPDATE_CORNERS)
14        but keep the 2nd with UPDATE_CORNERS: this prevents overwriting good data
15        with bad ones coming from a not-yet-updated halo.
16        This should fix the problem when sNx <> sNy and GCD(sNx,sNy) < 2*Olx.
17    o pkg/frazil:
18        move FrzForcT diag from frazil_diagnostics_state.F to frazil_calc_rhs.F
19        http://mitgcm.org/pipermail/mitgcm-devel/2012-March/005384.html
20    o model/src/config_check.F: add a check for OLx>sNx/OLy>sNy
21    o verification/lab_sea
22      * #undef SEAICE_EXCLUDE_FOR_EXACT_AD_TESTING
23      * #define ALLOW_SST_CONTROL & ALLOW_SST_CONTROL
24      * nTimeSteps 3 -> 4
25      * changed reference output accordingly
26    o pkg/ctrl:
27      * fix ctrl_get_gen for xx_sst, xx_sss
28    o pkg/fizhi:
29      - fix 2 calls to S/R GRD2MSC (argument igrd) in update_earth_exports.F
30        update results of exp. fizhi-cs-32x32x40 (fail with only 6 digits for cg2d)
31      - by default, use new version of S/R GETPWHERE (#define TRY_NEW_GETPWHERE);
32        fix few out-of-bounds indices in referencing vars (initialise igrd to 1);
33        clean-up fizhi_turb.F (remove unused & uninitialised qdiaglsm array).
34    o pkg/gmredi:
35      - add diagnostic of Redi (main diagnonal) vertical diffusive flux of Temp
36    o pkg/fizhi:
37      - fix few initialisation and multi-tile Pb: aqualev & gridalt now pass the
38        (old)aces open64 tuv test.
39    o pkg/icefront: fix bug and reorder loop in icefront_init_varia.F
40    o pkg/mom_vecinv:
41      - fix 1 loop range in mom_vecinv.F to be like all the other loops which
42        set/update gu,gv/Diss (fix Pb of uninitialised fVerUkp in admom_vecinv
43        with non-lin free-surf).
44    o model/src: move k-loop outside of i/j-loops when (re-)computing R_low
45      in ini/update_masks_etc.F in order to avoid -O3 optimization problems with
46      some compilers (gfortran 4.6.0 on MacOS)
47    o momentum:
48      - separate fVer?(:,:,kUp) & fVer?(:,:,kDown) in argument list of MOM_FLUXFORM
49        & MOM_VECINV subroutines (to help TAF). This fixes Pb of uninitialised
50        fVer?(kUp) in admom_fluxform with non-lin free-surf or bottom control.
51    
52    checkpoint63k (2012/03/17)
53    o model/src:
54       - selectAddFluid (ALLOW_ADDFLUID): add missing term in horizontal momentum
55         flux-form (mom_fluxform.F) and vertical momentum (calc_gw.F) equations.
56       - SOLVE_DIAGONAL: switch default to use adjoinable & vectorized version
57         (#undef SOLVE_DIAGONAL_LOWMEMORY); update output of exp. front_relax.bvp.
58    o model/src: solve_*diagonal.F
59       - replace division with multiplication by inverse (similar to original version)
60         update output of AD exp. global_ocean.90x40x15.
61       - fix pkg/gmredi/gmredi_calc_psi_bvp.F & pkg/ggl90/ggl90_calc.F
62         to enable the use of the vectorized & differentiable solve_tridiagonal.F
63       - test exp. global_ocean.90x40x15/input_ad: switch to advection scheme 20 for
64         vertical advection (to get solve_tridiagonal tested in AD mode).
65    o pkg/seaice: ECCO-CLIVAR merge:
66      1. seaice AREA relaxation
67         * CPP option: SEAICE_ALLOW_AREA_RELAXATION
68         * runtime flag: SEAICE_tauAreaObsRelax
69      2. modified global mean cost imbalance code: CPP option
70          ALLOW_SSH_GLOBMEAN_COST_CONTRIBUTION
71    o another iteration on solve_*diagonal.F
72       Make choices independent of AUTODIFF
73       Default will be the adjoinable vectorized version.
74       Alternative choices are:
75       * non-adjoinable original version with low memory footprint:
76         #define SOLVE_DIAGONAL_LOWMEMORY
77       * still adjoinable but does not vectorize (k as inner-most loop):
78         #define SOLVE_DIAGONAL_KINNER (keeping SOLVE_DIAGONAL_LOWMEMORY undef)
79    o testreport
80     - add option to use a home made wrapper around "make"
81     - remove MITGCM_IEEE env. variable (no longer active)
82    o pkg/shelfice
83     - improve computation of friction velocity for velocity dependent
84       exchange coefficients: include velocities into SHELFICEBoundaryLayer
85       block to average velocities vertically
86     - add TAF store directives for SHI_ALLOW_GAMMAFRICT
87    o Modify diagonal solvers, now three versions (upon request):
88      #ifndef SOLVE_DIAGONAL_AUTODIFF
89        1. default version (dating back a while ago)
90      #else /* def SOLVE_DIAGONAL_AUTODIFF */
91      # ifdef SOLVE_DIAGONAL_KINNER
92        2. adjoinable version with k-innermost loop (G. Forget)
93      # else
94        3. adjoinable vectorized version of 2.
95      # endif
96      #endif /* SOLVE_DIAGONAL_AUTODIFF */
97      All flags are currently set within routines, but could/should be moved to CPP-options.
98      Array bounds for 1. are as before, for 2.,3. cover the entire domain
99      (could be changed for 1. too).
100    o verification/lab_sea (fwd):
101      - update the 4 fwd lab_sea test experiment: no longer SEAICE_GROWTH_LEGACY,
102        use 7 categories (except hb87), new solve4temp params (except salt_plume),
103        constant salinity (=4) or variable salinity (salt_plume) done through
104        SItracer.
105    o pkg/seaice:
106      - rename parameters: SIsalFrac to SEAICE_saltFrac & SIsal0 to SEAICE_salt0;
107      - remove old parameters ( SEAICE_freeze, SEAICEturbFluxFormula, SEAICE_gamma_t,
108         SEAICE_gamma_t_frz, SEAICE_availHeatTaper & SEAICE_availHeatFracFrz)
109        from SEAICE_PARMS.h ; still need to fix seaice_cost_sst.F (broken when
110        SEAICE_freeze got retired) but already better than previously with
111        SEAICE_freeze=123456.7 deg.C;
112      - move setting of facOpenGrow/Melt from SEAICE_INIT_FIXED to SEAICE_READPARMS
113        (safer multi-threaded setting); always set SEAICEuseEVP;
114      - setting of ocean-ice turb. flux coeff: moved from SEAICE_CHECK to
115        SEAICE_READPARMS & SEAICE_INIT_FIXED (this fixes wrong summary report);
116        stop if multiple specifications for the same coeff; make sure default
117        SEAICE_mcPheePiston is compatible with drF(1) & deltaT.
118    o pkg/obcs:
119      - allow to switch to upwind 1rst order advection scheme for the advective
120        flux computation at the open-boundary; disabled for adjoint built.
121    o pkg/ptracers:
122      - rename PTRACERS_RESTART.h -> PTRACERS_START.h
123      - rename ptracers_fields_blocking_exchanges.F -> ptracers_fields_blocking_exch.F
124      - add parameter to decide when to start a tracer; use internal flag to
125        know which tracer to step-forward; switch this internal flag at the top
126        of forward_step.F (new S/R PTRACERS_SWITCH_ONOFF); for now, not enabled
127        for adjoint built.
128    o pkg/seaice:
129      - add SEAICE_SIZE.h anywhere in the code where SEAICE.h is included ;
130      - move MULTDIM declaration and setting from SEAICE.h to SEAICE_SIZE.h ;
131      - keep experiment offline_exf_seaice truly single category (set MULTDIM=1).
132    o pkg/ecco:
133      - fix writing of output file DiagnosCost_ClimSalt/Theta
134        and DiagnosCost_DriftSalt/Theta (if multi-tiles per proc).
135    o pkg/seaice:
136      - add missing initialisation of COR_ICE array in dynsolver.F
137      - merging SEAICE_MULTICATEGORY define and undef cases. Now the same code is
138        compiled either way, and is tested in all exps (multidim was only tested
139        in lab_sea ad before).
140      - cosmetic change to prepare for future addition of ITD. no change to results.
141        no defaults change.
142      - added run time param SEAICE_multDim (7 for SEAICE_MULTICATEGORY, 1 otherwise).
143      - by lack of adequate verification experiments, I further used custom versions
144        of global_ocean.cs32x15 to test multicat or not, with pickup or not. All
145        should be correct.
146      - avoid recomputations in ad.
147    o array initialisation in adjoint mode:
148      1) pkg/mom_common/mom_calc_ke.F:
149        add full array initialisation of KE inside mom_calc_ke.F (ALLOW_AUTODIFF_TAMC):
150        The S/R which calls MOM_CALC_KE initialises KE but in some recomputation
151        part this initialisation is gone, resulting in Floating Point Exception
152        (caught by open64 compiler with debug option).
153      2) model/src/convective_weights.F
154        set output convectCount over the full array range (instead of doing
155        an update): this fix a similar issue when called within recomputation (adjoint)
156        which could by-pass the initialisation (normally done in the caller S/R).
157    o pkg/seaice:
158      - final version of turbulent flux params, as agreed at MIT ice meet:
159           SEAICE_mcPheePiston (default is ~ 0.000875)
160           SEAICE_mcPheeTaper (default is 0.)
161           SEAICE_frazilFrac (defualt is 1.)
162           SEAICE_mcPheeStepFunc (default is false)
163      - changes results at trunction error level
164      - ifdef SEAICE_EXTERNAL_FLUXES, disallow SEAICE_waterAlbedo
165    o added pkg/frazil:
166      - see frazil_description.tex for details
167      - verification experiment is global_with_exf/input.yearly; changes output.yearly.txt
168    o pkg/shelfice/shelfice_thermodynamics.F
169      - fix exponents for velocity dependent exchange coefficients: change
170        from 2/3(=0) to 0.66666666666666667
171      - move computation of velocity dependent exchange coefficients into
172        separate loop, so that it applies to both thermodynamics
173      - move some divisions by constants out of loops
174    
175    checkpoint63j (2012/02/16)
176    o pkg/seaice:
177      - overhaul of seaice_summary.F after feb 2012 clean-up of seaice_growth.F etc.
178      - SItracer:  added run time params, and allow coupling to ocn salinity.
179    o pkg/seaice: remove (almost) all divisions by constants within loops
180      in seaice_growth.F and seaice_solve4temp.F, this changes (only) the cg2d
181      results of global_ocean.cs32x15.seaice from 16 to 11 digits (but only
182      those, caused by 1/QI -> recip_QI) -> update output.seaice.txt,
183      output_adm.seaice_dynmix.txt and also lab_sea: output_adm.evp.txt
184    o pkg/seaice :
185      - simplify McPhee tapering, and allow to use it with SEAICEturbFluxFormula
186        = 1 or 2, using newly added run time parameter SEAICE_availHeatTaper.
187      - fix d_AREAbyATM, d_AREAbyOCN, d_AREAbyICE diags I broke in r1.148.
188      - add permanent SItflux diag that corresponds to TFLUX but includes
189        ice+snow. Hence SItflux-TFLUX should match the ice+snow heat budget.
190      - allow activation/testing of a fix for suspected missing term in
191        ocn-ice heat budget (to be confirmed). To test this, you want to
192        undef SEAICE_DISABLE_HEATCONSFIX, and then set the run time param
193        SEAICEheatConsFix to .TRUE. that also allows the 'SIaaflux' diagnostic.
194      - no change in results, fwd or ad.
195    o global_ocean.cs32x15/results: 3 changes following from the pkg/seaice commit below:
196      - switch to variable freezing point.
197           Results change : cg2d -> 1 digits; ad -> 3-6-6 digits.
198      - bug fix : the sublimation term that was missing is now activated.
199           Results change : cg2d -> 2 digits; ad -> 8-6-6 digits.
200      - bug fix : flooding sign term for SIsal0.NE.0.
201           Result change : cg2d -> 8 digits; ad -> 11-12-9 digits.
202    o pkg/seaice:
203      - unified freezing point treatment : the old SEAICE_VARIABLE_FREEZING_POINT
204        is now the default, and the old default constant freezing point is recovered
205        with SEAICE_tempFrz0    = -1.96,
206             SEAICE_dTempFrz_dS = 0.,
207      - retire SEAICE_freeze (= the old way of specifycing the constant freezing point)
208      - remove ALLOW_SEAICE_FLOODING brackets; run time switch is already there.
209      - bug fix (thanks to M. Losch) : the sublimation term that was missing is now
210        activated. To reproduce old results with this bug define SEAICE_DISABLE_SUBLIM.
211      - bug fix (silly me) : flooding sign term (seaice_growth.F r 1.149line 1211)
212        was wrong for SIsal0.NE.0. Changes cs32x15 results (see above item for detail).
213      - bug fix (thanks to O. Jahn) : area loss for melting  got messed up in
214        seaice_growth r149 for legacy branch (no results change).
215      - introduce SEAICE_CAP_SUBLIM : caps sublimation heat flux in solve4temp (code
216        from I. Fenty).
217      - results did not change except for global_ocean.cs32x15, mostly due to the
218        switch to variable freezing point (see above item for detail).
219    o pkg/thsice:
220      - fix and simplify interface to salt_plume pkg ; diagnose directly amount of
221        seawater freezing in thsice_calc_thickn (not used).
222    o pkg/seaice: turbulent flux term specification via run time params.
223      - replace CPP switches with run time switches to facilitate testing
224      - retired CPPs : MCPHEE_OCEAN_ICE_HEAT_FLUX,
225                       GRADIENT_MIXED_LAYER_TURBULENCE_FACTOR
226      - added runtime parameter : SEAICEturbFluxFormula
227      - move Mcphee constants to SEAICE_PARAMS.h
228      - seaice_readparms.F : read turbulent flux term params (SEAICEturbFluxFormula;
229                 SEAICE_availHeatFrac/Frz, or SEAICE_gamma_t/_frz if apply);
230                 remove seaice_summary call (moved to seaice_init_fixed)
231      - seaice_init_fixed.F : set SEAICE_availHeatFrac/Frz depending on
232        SEAICEturbFluxFormula, and seaice_summary call (moved from seaice_readparms)
233      - seaice_summary.F : add missing report of read turbulent flux term set up
234                           and SITRACER.
235      - seaice_check.F : check range; inform and stop if retired CPPs are used
236                         (incl. SEAICE_AGE).
237      - seaice_growth.F : unified use of SEAICE_availHeatFrac/Frz, without
238             CPP switch, same computation as before for the different options.
239      - change results at the truncation level.
240    o pkg/seaice:
241      - remove un-used parameters LAD & MAX_TICE ; add new run-time parameters:
242        useMaykutSatVapPoly (default=F), postSolvTempIter (default=2) and
243        SEAICE_wetAlbTemp (default=-1e-3). Remove option SEAICE_SOLVE4TEMP_LEGACY.
244      - update verification/*/input*/data.seaice:
245        to reproduce previous results with former #defined SEAICE_SOLVE4TEMP_LEGACY
246        code, set useMaykutSatVapPoly=T & postSolvTempIter=0 ;
247        and to reproduce previous results with former non-SOLVE4TEMP_LEGACY code,
248        set SEAICE_wetAlbTemp=0 & SEAICE_snowThick=0.
249    o pkg/seaice/seaice_solve4temp.F (SOLVE4TEMP_LEGACY):
250      - remove LEGACY code for solving for tsurf (A1,A2,A3) but maintain the same
251        algorithm (same choice: useMaykutPolySatVap=T, postSolvTempIter=0);
252        difference in results only due to machine truncation.
253      - remove MAX_TICE (tsurf is always =< TMELT anyway); keep MIN_TICE if using
254        MaykutPolySatVap; keep MIN_LWDOWN.
255      - adapt SEAICE_MODIFY_GROWTH_ADJ code (untested) to non-legacy formulation.
256      - update output of verification exp. lab_sea (4 fwd: 11 cg2d digits except hb87,
257        + 3 AD: 6 digits except evp) and offline_exf_seaice.seaice (12 digits).
258    o pkg/salt_plume:
259      - isolate saltPlumeFlux array exch into a specific S/R called from
260        do_oceanic_phys.F
261      - add interface to pkg/salt_plume (filling of saltPlumeFlux) in pkg/thsice.
262    o verification:
263      - move untested set-up to MITgcm_contrib/verification_other.
264    o pkg/seaice:
265      - retire old way of SEAICE_AGE. Now replaced with ALLOW_SITRACER.
266    o pkg/seaice:
267      - seaice_solve4temp.F (keeping results unchanged):
268        * add 2 future run-time params to select which saturation vapor pressure
269          formula is used and how post-iteration fluxes are set.
270          Temporary set these 2 params according to option SOLVE4TEMP_LEGACY;
271        * New piece of code (not used) to update surf. atmos. heat flux F_ia using
272          the linearized expression to stay consistent with tsurf finding.
273      - seaice_freedrift.F avoid floating exception in sqrt(y) since y=sqrt(x*x)-x
274        can be < 0.
275    o pkg/seaice/seaice_solve4temp.F (SOLVE4TEMP_LEGACY undef):
276      - remove from F_ia (and from it's derivative dFiDTs1) the contribution of
277        conductive heat flux F_c , and add it explicitly when updating tsurf as
278        solution of: Fc = Fia + d/dT(Fia - Fc) *delta.tsurf
279        so that now F_ia has a consistent meaning through the entire routine.
280        This causes differences at truncation level: update output of fwd exp.
281        global_ocean.cs32x15.seaice.
282    o pkg/seaice:
283      - lots of editing/cleaning in seaice_solve4temp.F + better documentation
284        of arrays, sign/direction of fluxes; no effect on results.
285      - replace hard coded 273.16 (=previous value of celsius2K) by celsius2K
286        in seaice_budget_ocean.F & seaice_solve4temp.F (SOLVE4TEMP_LEGACY part);
287        note: this should have been done before changing celsius2K default.
288      - to keep results unchanged, add back old value of celsius2K in verification
289        exp. input*/data : lab_sea (AD), offline_exf_seaice (fwd+AD) & seaice_obcs
290      - replace hard coded seawater freezing temp in seaice_solve4temp.F (part
291        SOLVE4TEMP_LEGACY) of 271.20 (=previous value of celsius2K + default
292        value of SEAICE_freeze) by celsius2K+SEAICE_freeze so that seawater
293        freezing temp is consistent with value in seaice_growth.F ; this causes
294        differences at machine truncation level: update lab_sea AD output (3/4).
295    o pkg/seaice:
296      - mask (in exf_init_fixed.F) atemp,aqh,evap,precip,runoff,lwflx,areamask
297        and climsst/sss even when using seaice (to prevent calculation that might
298        use SST on land); does not affect any verification exp.
299      - apply mask to taux,tauy (in seaice_get_dynforcing.F); update output
300        of lab_sea.fd & lab_sea.hb87 and global_ocean.cs32x15.seaice_dynmix.
301    o pkg/seaice/seaice_growth.F: add mask to avoid non-zero ice thickness
302      over land (non-legacy code)
303    o vectorize salt_plume package:
304      - add extra code to salt_plume_frac and salt_plume_tendency_apply_s
305      - this code computes plumebk everywhere (also over land), thus requires
306        code to avoid divisions by zero and catch the case of kLev=Nr.
307      - efficiency of salt_plume_frac is still sub-optimal
308    o tools (genmake2):
309      - fix makefile NAME specification (option: -makefile NAME) by adding
310        "-f $MAKEFILE" in few places where it was missing including makedepend
311        command (contribution from Paul).
312    
313    checkpoint63i (2012/01/24)
314    o model/src:
315      - add factorized versions of some EOS code to find_rho.F,
316        define USE_FACTORIZED_EOS to turn it on (default for TARGET_NEC_SX)
317    o model/src:
318      - add celsius2K to namelist PARM01; remove unused recip_rhoNil from PARAMS.h;
319      - change default celsius2K from 273.16 to 273.15
320      - to keep results unchanged, add back old value of celsius2K in verification
321        exp. input*/data : aim.5l_cs, 1D_ocean_ice_column, lab_sea (fwd),
322         global_ocean.cs32x15(seaice) & cpl_aim+ocn(input_atm).
323    o model/src: add a little initialisation trick to find_rho.F and find_alpha.F
324      to make TAF generate vectorizable code
325    o pkg/seaice/seaice_evp.F: add code (copied from CICE) that avoids underflows.
326       Turn on by defining SEAICE_EVP_ELIMINATE_UNDERFLOWS. Most compilers
327       have flags that do this more efficiently.
328    o pkg/diagnostics/diagstats_calc.F
329      - for TARGET_NEC_SX fix the treatment of the scaling factor tmpFac=scaleFact
330    o pkg/obcs (with exch2):
331      - derive OB indices in overlap region from OB-InsideMask (in obcs_init_fixed.F)
332        and remove code (in obcs_readparms.F) which was based on EXCH of indices
333        (through buffer) and did not account for exch2 (e.g., CS-grid) topology.
334    o pkg/exf and seaice exp:
335      - change offline_exf_seaice.seaicetd test exp. to use default DIFF1 value (=0)
336        so that switching off area & heff advection flags does not affect results.
337      - change default EXF_LWDOWN_WITH_EMISSIVITY to #define in EXF_OPTIONS.h
338      - keep exp. seaice_obcs & 1D_ocean_ice_column(ad) unchanged (using #undef
339        EXF_LWDOWN_WITH_EMISSIVITY) and, using pkg/exf default emissivities, update
340        results of verification experiments: 1D_ocean_ice_column(fwd),
341        global_ocean.cs32x15.seaice(fwd+ad) & seaice_dynmix(ad), lab_sea (all 8)
342        and offline_exf_seaice (all 4).
343    o pkg/seaice:
344      - remove array YNEG, RIVER, TMIX (replaced by local var) from common block;
345        remove also areaNm1 & hEffNm1 when SEAICE_GROWTH_LEGACY is undef.
346      - fix bug: areaNm1 & hEffNm1 are needed in seaice_growth (SEAICE_GROWTH_LEGACY)
347        but were not filled when resp. SEAICEadvArea=F & SEAICEadvHeff=F and
348        not multi-dim advection;
349      - fix seaice_growth.F to compile with both SEAICE_GROWTH_LEGACY and
350        SHORTWAVE_HEATING #undef.
351    o optim: make Makefile more robust (?)
352    o pkg/obcs:
353      * fix treatment of obcs_read_pickup for TAF
354    o pkg/shelfice:
355      * add missing initialisation of num_shifwflx
356      * new adjoint verification exp. for isomip
357      * change Prandtl and Schmidt numbers from generic formulations
358        (in terms of model diffus. and visc.) to separate runtime
359        parameters, with Holland and Jenkins (1999) default values.
360    o pkg/exf (interpolation):
361      - extended input field (2 rows) near the N & S poles:
362        * fill in with the symetric value (when even Nb of data in longitude)
363        * add average value at the poles only for scalar quantities ; for vector
364          component interpolation, skip the averaging and keep duplicated values,
365          unless the 2 components have same location (uvInterp=T) in which case
366          interpolate the 2 components together using S/R EXF_INTERP_UV.
367      - new S/R EXF_INTERP_UV to interpolate the 2 components of a vector field
368        together: this allows to account properly for local orientation when
369        averaging at N & S pole.
370      - add CPP option EXF_USE_OLD_INTERP_POLE to recover old results regarding
371        exf-interpolation near N & S poles. Undef by default.
372      - add debug check/print on 1rst iter if debugLevel >=2.
373    o pkg/exf:
374      - change masking flags definition (no longer "parameter"), put them in
375        common block and set them in S/R EXF_INIT_FIXED.
376      - change recognized masking flag from s,u,v to c,w,s since the mask
377        to use (maskC,W,S) depends on position on model grid and has little to
378        do with scalar/vector difference; fix masking if using P-coordinates.
379      - fix masking of wind-stress (was wrong if interpolated or read on A-grid)
380        and update results of exp. global_with_exf (x2).
381      - fix setting of zenith-angle table when SHORTWAVE_HEATING is undef.
382    o pkg/obcs
383      - S/R obcs_calc_stevens: fix a small bug (gammat -> gammas where appropriate)
384    o pkg/exf (interpolation):
385      - assume periodicity in X only if input field cover full longitude range.
386      - improve search for lat. index (supposed to be faster, in ~log2(ny) steps,
387        and should vectorise).
388      - fix input lat of the 2 added row (in case we provide N.pole data).
389    
390    checkpoint63h (2011/12/30)
391    o pkg/seaice:
392      - change declaration of UVM from _RL to _RS in order to get B-grid
393        uIce,vIce monitor when _RS = real*4
394    o pkg/offline:
395      - new S/R OFFLINE_RESET_PARMS for resetting main-model params (switch off flags);
396      - compute vertical velocity if not read from file (switch on exactConserv
397        & staggerTimeStep);
398      - fix output of ptracer monitor iter & time for default PTRACERS_monitorFreq.
399    o verification:
400      - update grid-files (in tutorial_held_suarez_cs/input and fizhi-cs-32x32x40/input)
401        with grid-angle generated using "utils/matlab/cs_grid/cubeCalcAngle.m":
402        fix Pb in yG definition @ 2 missing corners (previously yG was averaged);
403      - update output of exp. global_ocean.cs32x15.viscA4 after changing
404        grid-file angles (used here for coriolis-3d);
405      - remove (or gzip) few files not needed to run fizhi-cs experiments.
406    o pkg/exf (vector interpolation):
407      - rotate vector component toward local grid-axis orientation using grid-angles
408        (stored in GRID.h) instead of locally computed rotation angle; keep old code
409        available with exf option EXF_USE_OLD_VEC_ROTATION (undef by default).
410    o pkg/seaice:
411      - allow to compile with exf options ALLOW_ATM_TEMP or ALLOW_DOWNWARD_RADIATION
412        undefined. Fix and remove the stop when ALLOW_RUNOFF is undefined.
413    o pkg/PKG_OPTIONS.h files:
414      - move #include "CPP_OPTIONS.h" just after #include "PACKAGES_CONFIG.h",
415        outside of the #ifdef ALLOW_THISPKG / #endif block.
416      - update verification/*/code/PKG_OPTIONS.h files.
417    o add a verification experiment (offline_exf_seaice/input.seaice) that test
418      the B-grid LSOR solver
419    o pkg/seaice: sort out emissivity and long wave radiation step 2:
420      - add emissivity for snow and ice as new run-time parameters
421        (unfortunately) that default to the corresponding exf values; this
422        changes results in most verification experiments so that for backward
423        compatibility these parameter have to be set explicitly to inconsistent
424        values (ugly);
425      - the exf-flag EXF_LWDOWN_WITH_EMISSIVITY then gets rid off the hard-wired
426        emissivities of 0.97 associated with lwdownloc in S/R seaice_solve4temp
427        until we agree how to handle this bug properly
428    o pkg/exf (interpolation):
429      - add a set of run-time param ({inputfield}_interpMethod), one for
430        each interpolated input field, to select the interpolation method
431        with a value of zero switching off the interpolation;
432      - print interpolation parameters to standard output;
433      - refine exf_check.F accordingly ; stop if USE_NO_INTERP_RUNOFF is defined
434        (to use instead runoff_interpMethod=0 in data.exf).
435      - simplify default setting of interpolation parameters (for all fields,
436        set position to match model grid cell-center position, leading to trivial
437        interpolation in case of regular Lat-Lon grid) and fix for the case of
438        non-uniform delY.
439    o pkg/exf/exf_radiation.F: add the factor ocean_emissivity to lwdown, for
440       within #ifdef EXF_LWDOWN_WITH_EMISSIVITY/#endif. Unless ocean_emissivity=1.
441       this factor is absolutely required, because the lw exitance (= out-going
442       long wave radiation) is emissivity*stefanBoltzmann*T^4 + rho*lwdown,
443       where the reflectivity rho = 1-emissivity for conservation reasons. Once
444       this is established, we can remove the CPP-Flag (if we want to).
445    o pkg/seaice:
446      - qualify a stop statement in S/R seaice_check: EXF_READ_EVAP and
447        ALLOW_BULKFORMULAE are only required if SEAICE_EXTERNAL_FLUXES is defined
448      - sort out emissivity and long wave radiation, step 1: make SEAICE_emissivity
449        what the name implies (and not emissivity*BoltzmannConstant), this means
450        the old default value of 5.5e-8 now means
451        5.5e-8/5.670e-8 = 0.97001763668430343479 as ocean_emissivity in
452        S/R exf_readparms
453      - FV-discretization of the B-grid LSOR solver, turn on with
454        SEAICE_LSRBNEW. This new solver also involves a slight re-organization
455        of the calling routine dynsolver, so that B and C-grid code look a
456        little more alike.
457      - fix index bugs in ostres.F (B-grid code)
458    o pkg/seaice/seaice_ocean_budget.F: change (unused) code to make it look better
459    o pkg/seaice/seaice_readparms.F: make ocean_emissivity*stefanBoltzmann the
460      default for SEAICE_emissivity, if useEXF; requires setting a wrong
461      parameter value in global_ocean.cs32x15/input.seaice/data.seaice for
462      backward compatiblity
463    o model/src: use sigmaR in calc_ivdc
464    
465    checkpoint63g (2011/12/16)
466    o pkg/seaice/seaice_growth.F:
467      fix heat conservation of the coupled ocean-seaice system.
468      when SEAICE_HEAT_CONSERV_FIX is defined, the mismatch of
469      solid vs liquid water treatment is resolved via QNET.
470    o pkg/seaice/seaice_growth.F:
471      add missing term for sublimation in saltFlux, which was breaking conservation.
472    o pkg/seaice/seaice_model.F:
473      Remove this patholigical case treatment in evolution branch,
474      where it is un-necessary and breaks conservation.
475      Update global_ocean.cs32x15/results accordingly for
476      output.seaice.txt output_adm.seaice.txt and output_adm.seaice_dynmix.txt
477    o model/src:
478      useRealFreshWaterFlux: remove masking of EmPmP (using maskInC) in
479      external_forcing_surf.F and apply mask directly in S/R SOLVE_FOR_PRESSURE.
480    o pkg/obcs:
481      modify Stevens boundary conditions so that S/R obcs_calc_stevens computes
482      tendency for temperature and salinity that is then applied to update
483      theta and salt in S/R obcs_apply_ts; this requires proper masking of all
484      horizontal advection and diffusion contributions on the boundary (in
485      S/Rs gad_advection, gad_calc_rhs, gmredi_rtransport, gmredi_calc_diff), and
486      removing the mask in S/R timestep_tracer. The advantage of this approach is
487      that the updated tracer values include contributions from the surface
488      forcing and vertical diffusion.
489      This modification changes exp4.stevens because of vertical diffusion.
490    o model/src:
491      change non-curvilinear grid setting to also work with exch2 + blank tiles:
492      - move delX,delY to new header file (SET_GRID.h) and adjust length to 1rst
493        face dimensions.
494      - new S/R INI_LOCAL_GRID to define model tile-local grid (using same units
495        as delX,delY) and called from S/R INI_CARTESIAN_GRID, INI_CYLINDER_GRID
496        and INI_SPHERICAL_POLAR_GRID.
497      change test-experiment global_ocean.90x40x15:
498      - split the domain in many more tiles (9x4 tiles of 10x10 each);
499      - switch to exch2 and remove 1 blank-tile (but only for MPI test).
500      - update results of both test (std & dwnslp).
501    o pkg/diagnostics/diagstat_calc.F: fix problem with non-initialised halos in
502       tmp-fields for TARGET_NEC_SX at the cost of extra loops and less vectorisation
503    o model/src:
504      - take sigma-coords related code out of update_etah.F into new S/R UPDATE_ETAWS
505        and fix initialisation when using sigma-coords.
506    o model/src:
507     - improve Gael's changes from Jan 14, 2011 "addition of an 'update' of hfacc etc.
508       to their current value at the beginning of forward_step.F": add a new run-time
509       switch "doResetHFactors" (default=false) and use it to do (or not) the resetting.
510     - set doResetHFactors=T in the following test exp:
511        global_ocean.90x40x15/input (rStar) & input.dwnslp (linFS),
512        global_ocean.cs32x15/input.seaice (rStar), hs94.cs-32x32x5/input.impIGW (linFS)
513        and tutorial_global_oce_in_p (nonLinFS in p)
514    o pkg/ecco
515      - added IES cost term
516    o verification/advect_xz
517      - scale down the depth by 1/100 (from 200 km to just 2.km)
518      - add secondary test using divergent flow, r-star and implicit vertical advection.
519      - add note (check_conserve_TS.txt) and matlab script to check global
520        conservation of T & S with NonLin-FreeSurf and Adams-Bashforth.
521    o pkg/rbcs:
522      - add missing relaxUFile & relaxVFile in namelist (in rbcs_readparms.F).
523    o pkg/obcs (Stevens BCs):
524      - fix various problems in the phase speed computations of the Stevens
525        boundary conditions:
526        - sign error for western and southern boundaries,
527        - time tendencies were underestimated by factor of dTracerLev and some just
528          zero (for multidim advection schemes) -> now estimate time tendencies
529          from difference between previous (n) time level and the one before (n-1);
530          this requires storing a field per tracer per boundary, also in the pickup
531          files.
532        - replace deltaTmom in cflMer/Zon computation with dTracerLev
533        - set default phase velocity to cflMer/Zon
534      - update verification experiment exp4.stevens
535  o pkg/generic_advdiff (implicit_r):  o pkg/generic_advdiff (implicit_r):
536    - fix implicit vertical advection conservation with AB and/or NonLin-FreeSurf    - fix implicit vertical advection conservation with AB and/or NonLin-FreeSurf
537      (remove Tr*d/dz(w) in gad_implicit_r.F and add it in gad_calc_rhs.F);      (remove Tr*d/dz(w) in gad_implicit_r.F and add it in gad_calc_rhs.F);

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