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revision 1.1545 by jmc, Thu Dec 8 03:49:58 2011 UTC revision 1.1632 by jmc, Wed Mar 21 21:42:12 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      - fix 2 calls to S/R GRD2MSC (argument igrd) in update_earth_exports.F
9        update results of exp. fizhi-cs-32x32x40 (fail with only 6 digits for cg2d)
10    o pkg/gmredi:
11      - add diagnostic of Redi (main diagnonal) vertical diffusive flux of Temp
12    o pkg/fizhi:
13      - fix few initialisation and multi-tile Pb: aqualev & gridalt now pass the
14        (old)aces open64 tuv test.
15    o pkg/icefront: fix bug and reorder loop in icefront_init_varia.F
16    o pkg/mom_vecinv:
17      - fix 1 loop range in mom_vecinv.F to be like all the other loops which
18        set/update gu,gv/Diss (fix Pb of uninitialised fVerUkp in admom_vecinv
19        with non-lin free-surf).
20    o model/src: move k-loop outside of i/j-loops when (re-)computing R_low
21      in ini/update_masks_etc.F in order to avoid -O3 optimization problems with
22      some compilers (gfortran 4.6.0 on MacOS)
23    o momentum:
24      - separate fVer?(:,:,kUp) & fVer?(:,:,kDown) in argument list of MOM_FLUXFORM
25        & MOM_VECINV subroutines (to help TAF). This fixes Pb of uninitialised
26        fVer?(kUp) in admom_fluxform with non-lin free-surf or bottom control.
27    
28    checkpoint63k (2012/03/17)
29    o model/src:
30       - selectAddFluid (ALLOW_ADDFLUID): add missing term in horizontal momentum
31         flux-form (mom_fluxform.F) and vertical momentum (calc_gw.F) equations.
32       - SOLVE_DIAGONAL: switch default to use adjoinable & vectorized version
33         (#undef SOLVE_DIAGONAL_LOWMEMORY); update output of exp. front_relax.bvp.
34    o model/src: solve_*diagonal.F
35       - replace division with multiplication by inverse (similar to original version)
36         update output of AD exp. global_ocean.90x40x15.
37       - fix pkg/gmredi/gmredi_calc_psi_bvp.F & pkg/ggl90/ggl90_calc.F
38         to enable the use of the vectorized & differentiable solve_tridiagonal.F
39       - test exp. global_ocean.90x40x15/input_ad: switch to advection scheme 20 for
40         vertical advection (to get solve_tridiagonal tested in AD mode).
41    o pkg/seaice: ECCO-CLIVAR merge:
42      1. seaice AREA relaxation
43         * CPP option: SEAICE_ALLOW_AREA_RELAXATION
44         * runtime flag: SEAICE_tauAreaObsRelax
45      2. modified global mean cost imbalance code: CPP option
46          ALLOW_SSH_GLOBMEAN_COST_CONTRIBUTION
47    o another iteration on solve_*diagonal.F
48       Make choices independent of AUTODIFF
49       Default will be the adjoinable vectorized version.
50       Alternative choices are:
51       * non-adjoinable original version with low memory footprint:
52         #define SOLVE_DIAGONAL_LOWMEMORY
53       * still adjoinable but does not vectorize (k as inner-most loop):
54         #define SOLVE_DIAGONAL_KINNER (keeping SOLVE_DIAGONAL_LOWMEMORY undef)
55    o testreport
56     - add option to use a home made wrapper around "make"
57     - remove MITGCM_IEEE env. variable (no longer active)
58    o pkg/shelfice
59     - improve computation of friction velocity for velocity dependent
60       exchange coefficients: include velocities into SHELFICEBoundaryLayer
61       block to average velocities vertically
62     - add TAF store directives for SHI_ALLOW_GAMMAFRICT
63    o Modify diagonal solvers, now three versions (upon request):
64      #ifndef SOLVE_DIAGONAL_AUTODIFF
65        1. default version (dating back a while ago)
66      #else /* def SOLVE_DIAGONAL_AUTODIFF */
67      # ifdef SOLVE_DIAGONAL_KINNER
68        2. adjoinable version with k-innermost loop (G. Forget)
69      # else
70        3. adjoinable vectorized version of 2.
71      # endif
72      #endif /* SOLVE_DIAGONAL_AUTODIFF */
73      All flags are currently set within routines, but could/should be moved to CPP-options.
74      Array bounds for 1. are as before, for 2.,3. cover the entire domain
75      (could be changed for 1. too).
76    o verification/lab_sea (fwd):
77      - update the 4 fwd lab_sea test experiment: no longer SEAICE_GROWTH_LEGACY,
78        use 7 categories (except hb87), new solve4temp params (except salt_plume),
79        constant salinity (=4) or variable salinity (salt_plume) done through
80        SItracer.
81    o pkg/seaice:
82      - rename parameters: SIsalFrac to SEAICE_saltFrac & SIsal0 to SEAICE_salt0;
83      - remove old parameters ( SEAICE_freeze, SEAICEturbFluxFormula, SEAICE_gamma_t,
84         SEAICE_gamma_t_frz, SEAICE_availHeatTaper & SEAICE_availHeatFracFrz)
85        from SEAICE_PARMS.h ; still need to fix seaice_cost_sst.F (broken when
86        SEAICE_freeze got retired) but already better than previously with
87        SEAICE_freeze=123456.7 deg.C;
88      - move setting of facOpenGrow/Melt from SEAICE_INIT_FIXED to SEAICE_READPARMS
89        (safer multi-threaded setting); always set SEAICEuseEVP;
90      - setting of ocean-ice turb. flux coeff: moved from SEAICE_CHECK to
91        SEAICE_READPARMS & SEAICE_INIT_FIXED (this fixes wrong summary report);
92        stop if multiple specifications for the same coeff; make sure default
93        SEAICE_mcPheePiston is compatible with drF(1) & deltaT.
94    o pkg/obcs:
95      - allow to switch to upwind 1rst order advection scheme for the advective
96        flux computation at the open-boundary; disabled for adjoint built.
97    o pkg/ptracers:
98      - rename PTRACERS_RESTART.h -> PTRACERS_START.h
99      - rename ptracers_fields_blocking_exchanges.F -> ptracers_fields_blocking_exch.F
100      - add parameter to decide when to start a tracer; use internal flag to
101        know which tracer to step-forward; switch this internal flag at the top
102        of forward_step.F (new S/R PTRACERS_SWITCH_ONOFF); for now, not enabled
103        for adjoint built.
104    o pkg/seaice:
105      - add SEAICE_SIZE.h anywhere in the code where SEAICE.h is included ;
106      - move MULTDIM declaration and setting from SEAICE.h to SEAICE_SIZE.h ;
107      - keep experiment offline_exf_seaice truly single category (set MULTDIM=1).
108    o pkg/ecco:
109      - fix writing of output file DiagnosCost_ClimSalt/Theta
110        and DiagnosCost_DriftSalt/Theta (if multi-tiles per proc).
111    o pkg/seaice:
112      - add missing initialisation of COR_ICE array in dynsolver.F
113      - merging SEAICE_MULTICATEGORY define and undef cases. Now the same code is
114        compiled either way, and is tested in all exps (multidim was only tested
115        in lab_sea ad before).
116      - cosmetic change to prepare for future addition of ITD. no change to results.
117        no defaults change.
118      - added run time param SEAICE_multDim (7 for SEAICE_MULTICATEGORY, 1 otherwise).
119      - by lack of adequate verification experiments, I further used custom versions
120        of global_ocean.cs32x15 to test multicat or not, with pickup or not. All
121        should be correct.
122      - avoid recomputations in ad.
123    o array initialisation in adjoint mode:
124      1) pkg/mom_common/mom_calc_ke.F:
125        add full array initialisation of KE inside mom_calc_ke.F (ALLOW_AUTODIFF_TAMC):
126        The S/R which calls MOM_CALC_KE initialises KE but in some recomputation
127        part this initialisation is gone, resulting in Floating Point Exception
128        (caught by open64 compiler with debug option).
129      2) model/src/convective_weights.F
130        set output convectCount over the full array range (instead of doing
131        an update): this fix a similar issue when called within recomputation (adjoint)
132        which could by-pass the initialisation (normally done in the caller S/R).
133    o pkg/seaice:
134      - final version of turbulent flux params, as agreed at MIT ice meet:
135           SEAICE_mcPheePiston (default is ~ 0.000875)
136           SEAICE_mcPheeTaper (default is 0.)
137           SEAICE_frazilFrac (defualt is 1.)
138           SEAICE_mcPheeStepFunc (default is false)
139      - changes results at trunction error level
140      - ifdef SEAICE_EXTERNAL_FLUXES, disallow SEAICE_waterAlbedo
141    o added pkg/frazil:
142      - see frazil_description.tex for details
143      - verification experiment is global_with_exf/input.yearly; changes output.yearly.txt
144    o pkg/shelfice/shelfice_thermodynamics.F
145      - fix exponents for velocity dependent exchange coefficients: change
146        from 2/3(=0) to 0.66666666666666667
147      - move computation of velocity dependent exchange coefficients into
148        separate loop, so that it applies to both thermodynamics
149      - move some divisions by constants out of loops
150    
151    checkpoint63j (2012/02/16)
152    o pkg/seaice:
153      - overhaul of seaice_summary.F after feb 2012 clean-up of seaice_growth.F etc.
154      - SItracer:  added run time params, and allow coupling to ocn salinity.
155    o pkg/seaice: remove (almost) all divisions by constants within loops
156      in seaice_growth.F and seaice_solve4temp.F, this changes (only) the cg2d
157      results of global_ocean.cs32x15.seaice from 16 to 11 digits (but only
158      those, caused by 1/QI -> recip_QI) -> update output.seaice.txt,
159      output_adm.seaice_dynmix.txt and also lab_sea: output_adm.evp.txt
160    o pkg/seaice :
161      - simplify McPhee tapering, and allow to use it with SEAICEturbFluxFormula
162        = 1 or 2, using newly added run time parameter SEAICE_availHeatTaper.
163      - fix d_AREAbyATM, d_AREAbyOCN, d_AREAbyICE diags I broke in r1.148.
164      - add permanent SItflux diag that corresponds to TFLUX but includes
165        ice+snow. Hence SItflux-TFLUX should match the ice+snow heat budget.
166      - allow activation/testing of a fix for suspected missing term in
167        ocn-ice heat budget (to be confirmed). To test this, you want to
168        undef SEAICE_DISABLE_HEATCONSFIX, and then set the run time param
169        SEAICEheatConsFix to .TRUE. that also allows the 'SIaaflux' diagnostic.
170      - no change in results, fwd or ad.
171    o global_ocean.cs32x15/results: 3 changes following from the pkg/seaice commit below:
172      - switch to variable freezing point.
173           Results change : cg2d -> 1 digits; ad -> 3-6-6 digits.
174      - bug fix : the sublimation term that was missing is now activated.
175           Results change : cg2d -> 2 digits; ad -> 8-6-6 digits.
176      - bug fix : flooding sign term for SIsal0.NE.0.
177           Result change : cg2d -> 8 digits; ad -> 11-12-9 digits.
178    o pkg/seaice:
179      - unified freezing point treatment : the old SEAICE_VARIABLE_FREEZING_POINT
180        is now the default, and the old default constant freezing point is recovered
181        with SEAICE_tempFrz0    = -1.96,
182             SEAICE_dTempFrz_dS = 0.,
183      - retire SEAICE_freeze (= the old way of specifycing the constant freezing point)
184      - remove ALLOW_SEAICE_FLOODING brackets; run time switch is already there.
185      - bug fix (thanks to M. Losch) : the sublimation term that was missing is now
186        activated. To reproduce old results with this bug define SEAICE_DISABLE_SUBLIM.
187      - bug fix (silly me) : flooding sign term (seaice_growth.F r 1.149line 1211)
188        was wrong for SIsal0.NE.0. Changes cs32x15 results (see above item for detail).
189      - bug fix (thanks to O. Jahn) : area loss for melting  got messed up in
190        seaice_growth r149 for legacy branch (no results change).
191      - introduce SEAICE_CAP_SUBLIM : caps sublimation heat flux in solve4temp (code
192        from I. Fenty).
193      - results did not change except for global_ocean.cs32x15, mostly due to the
194        switch to variable freezing point (see above item for detail).
195    o pkg/thsice:
196      - fix and simplify interface to salt_plume pkg ; diagnose directly amount of
197        seawater freezing in thsice_calc_thickn (not used).
198    o pkg/seaice: turbulent flux term specification via run time params.
199      - replace CPP switches with run time switches to facilitate testing
200      - retired CPPs : MCPHEE_OCEAN_ICE_HEAT_FLUX,
201                       GRADIENT_MIXED_LAYER_TURBULENCE_FACTOR
202      - added runtime parameter : SEAICEturbFluxFormula
203      - move Mcphee constants to SEAICE_PARAMS.h
204      - seaice_readparms.F : read turbulent flux term params (SEAICEturbFluxFormula;
205                 SEAICE_availHeatFrac/Frz, or SEAICE_gamma_t/_frz if apply);
206                 remove seaice_summary call (moved to seaice_init_fixed)
207      - seaice_init_fixed.F : set SEAICE_availHeatFrac/Frz depending on
208        SEAICEturbFluxFormula, and seaice_summary call (moved from seaice_readparms)
209      - seaice_summary.F : add missing report of read turbulent flux term set up
210                           and SITRACER.
211      - seaice_check.F : check range; inform and stop if retired CPPs are used
212                         (incl. SEAICE_AGE).
213      - seaice_growth.F : unified use of SEAICE_availHeatFrac/Frz, without
214             CPP switch, same computation as before for the different options.
215      - change results at the truncation level.
216    o pkg/seaice:
217      - remove un-used parameters LAD & MAX_TICE ; add new run-time parameters:
218        useMaykutSatVapPoly (default=F), postSolvTempIter (default=2) and
219        SEAICE_wetAlbTemp (default=-1e-3). Remove option SEAICE_SOLVE4TEMP_LEGACY.
220      - update verification/*/input*/data.seaice:
221        to reproduce previous results with former #defined SEAICE_SOLVE4TEMP_LEGACY
222        code, set useMaykutSatVapPoly=T & postSolvTempIter=0 ;
223        and to reproduce previous results with former non-SOLVE4TEMP_LEGACY code,
224        set SEAICE_wetAlbTemp=0 & SEAICE_snowThick=0.
225    o pkg/seaice/seaice_solve4temp.F (SOLVE4TEMP_LEGACY):
226      - remove LEGACY code for solving for tsurf (A1,A2,A3) but maintain the same
227        algorithm (same choice: useMaykutPolySatVap=T, postSolvTempIter=0);
228        difference in results only due to machine truncation.
229      - remove MAX_TICE (tsurf is always =< TMELT anyway); keep MIN_TICE if using
230        MaykutPolySatVap; keep MIN_LWDOWN.
231      - adapt SEAICE_MODIFY_GROWTH_ADJ code (untested) to non-legacy formulation.
232      - update output of verification exp. lab_sea (4 fwd: 11 cg2d digits except hb87,
233        + 3 AD: 6 digits except evp) and offline_exf_seaice.seaice (12 digits).
234    o pkg/salt_plume:
235      - isolate saltPlumeFlux array exch into a specific S/R called from
236        do_oceanic_phys.F
237      - add interface to pkg/salt_plume (filling of saltPlumeFlux) in pkg/thsice.
238    o verification:
239      - move untested set-up to MITgcm_contrib/verification_other.
240    o pkg/seaice:
241      - retire old way of SEAICE_AGE. Now replaced with ALLOW_SITRACER.
242    o pkg/seaice:
243      - seaice_solve4temp.F (keeping results unchanged):
244        * add 2 future run-time params to select which saturation vapor pressure
245          formula is used and how post-iteration fluxes are set.
246          Temporary set these 2 params according to option SOLVE4TEMP_LEGACY;
247        * New piece of code (not used) to update surf. atmos. heat flux F_ia using
248          the linearized expression to stay consistent with tsurf finding.
249      - seaice_freedrift.F avoid floating exception in sqrt(y) since y=sqrt(x*x)-x
250        can be < 0.
251    o pkg/seaice/seaice_solve4temp.F (SOLVE4TEMP_LEGACY undef):
252      - remove from F_ia (and from it's derivative dFiDTs1) the contribution of
253        conductive heat flux F_c , and add it explicitly when updating tsurf as
254        solution of: Fc = Fia + d/dT(Fia - Fc) *delta.tsurf
255        so that now F_ia has a consistent meaning through the entire routine.
256        This causes differences at truncation level: update output of fwd exp.
257        global_ocean.cs32x15.seaice.
258    o pkg/seaice:
259      - lots of editing/cleaning in seaice_solve4temp.F + better documentation
260        of arrays, sign/direction of fluxes; no effect on results.
261      - replace hard coded 273.16 (=previous value of celsius2K) by celsius2K
262        in seaice_budget_ocean.F & seaice_solve4temp.F (SOLVE4TEMP_LEGACY part);
263        note: this should have been done before changing celsius2K default.
264      - to keep results unchanged, add back old value of celsius2K in verification
265        exp. input*/data : lab_sea (AD), offline_exf_seaice (fwd+AD) & seaice_obcs
266      - replace hard coded seawater freezing temp in seaice_solve4temp.F (part
267        SOLVE4TEMP_LEGACY) of 271.20 (=previous value of celsius2K + default
268        value of SEAICE_freeze) by celsius2K+SEAICE_freeze so that seawater
269        freezing temp is consistent with value in seaice_growth.F ; this causes
270        differences at machine truncation level: update lab_sea AD output (3/4).
271    o pkg/seaice:
272      - mask (in exf_init_fixed.F) atemp,aqh,evap,precip,runoff,lwflx,areamask
273        and climsst/sss even when using seaice (to prevent calculation that might
274        use SST on land); does not affect any verification exp.
275      - apply mask to taux,tauy (in seaice_get_dynforcing.F); update output
276        of lab_sea.fd & lab_sea.hb87 and global_ocean.cs32x15.seaice_dynmix.
277    o pkg/seaice/seaice_growth.F: add mask to avoid non-zero ice thickness
278      over land (non-legacy code)
279    o vectorize salt_plume package:
280      - add extra code to salt_plume_frac and salt_plume_tendency_apply_s
281      - this code computes plumebk everywhere (also over land), thus requires
282        code to avoid divisions by zero and catch the case of kLev=Nr.
283      - efficiency of salt_plume_frac is still sub-optimal
284    o tools (genmake2):
285      - fix makefile NAME specification (option: -makefile NAME) by adding
286        "-f $MAKEFILE" in few places where it was missing including makedepend
287        command (contribution from Paul).
288    
289    checkpoint63i (2012/01/24)
290    o model/src:
291      - add factorized versions of some EOS code to find_rho.F,
292        define USE_FACTORIZED_EOS to turn it on (default for TARGET_NEC_SX)
293    o model/src:
294      - add celsius2K to namelist PARM01; remove unused recip_rhoNil from PARAMS.h;
295      - change default celsius2K from 273.16 to 273.15
296      - to keep results unchanged, add back old value of celsius2K in verification
297        exp. input*/data : aim.5l_cs, 1D_ocean_ice_column, lab_sea (fwd),
298         global_ocean.cs32x15(seaice) & cpl_aim+ocn(input_atm).
299    o model/src: add a little initialisation trick to find_rho.F and find_alpha.F
300      to make TAF generate vectorizable code
301    o pkg/seaice/seaice_evp.F: add code (copied from CICE) that avoids underflows.
302       Turn on by defining SEAICE_EVP_ELIMINATE_UNDERFLOWS. Most compilers
303       have flags that do this more efficiently.
304    o pkg/diagnostics/diagstats_calc.F
305      - for TARGET_NEC_SX fix the treatment of the scaling factor tmpFac=scaleFact
306    o pkg/obcs (with exch2):
307      - derive OB indices in overlap region from OB-InsideMask (in obcs_init_fixed.F)
308        and remove code (in obcs_readparms.F) which was based on EXCH of indices
309        (through buffer) and did not account for exch2 (e.g., CS-grid) topology.
310    o pkg/exf and seaice exp:
311      - change offline_exf_seaice.seaicetd test exp. to use default DIFF1 value (=0)
312        so that switching off area & heff advection flags does not affect results.
313      - change default EXF_LWDOWN_WITH_EMISSIVITY to #define in EXF_OPTIONS.h
314      - keep exp. seaice_obcs & 1D_ocean_ice_column(ad) unchanged (using #undef
315        EXF_LWDOWN_WITH_EMISSIVITY) and, using pkg/exf default emissivities, update
316        results of verification experiments: 1D_ocean_ice_column(fwd),
317        global_ocean.cs32x15.seaice(fwd+ad) & seaice_dynmix(ad), lab_sea (all 8)
318        and offline_exf_seaice (all 4).
319    o pkg/seaice:
320      - remove array YNEG, RIVER, TMIX (replaced by local var) from common block;
321        remove also areaNm1 & hEffNm1 when SEAICE_GROWTH_LEGACY is undef.
322      - fix bug: areaNm1 & hEffNm1 are needed in seaice_growth (SEAICE_GROWTH_LEGACY)
323        but were not filled when resp. SEAICEadvArea=F & SEAICEadvHeff=F and
324        not multi-dim advection;
325      - fix seaice_growth.F to compile with both SEAICE_GROWTH_LEGACY and
326        SHORTWAVE_HEATING #undef.
327    o optim: make Makefile more robust (?)
328    o pkg/obcs:
329      * fix treatment of obcs_read_pickup for TAF
330    o pkg/shelfice:
331      * add missing initialisation of num_shifwflx
332      * new adjoint verification exp. for isomip
333      * change Prandtl and Schmidt numbers from generic formulations
334        (in terms of model diffus. and visc.) to separate runtime
335        parameters, with Holland and Jenkins (1999) default values.
336    o pkg/exf (interpolation):
337      - extended input field (2 rows) near the N & S poles:
338        * fill in with the symetric value (when even Nb of data in longitude)
339        * add average value at the poles only for scalar quantities ; for vector
340          component interpolation, skip the averaging and keep duplicated values,
341          unless the 2 components have same location (uvInterp=T) in which case
342          interpolate the 2 components together using S/R EXF_INTERP_UV.
343      - new S/R EXF_INTERP_UV to interpolate the 2 components of a vector field
344        together: this allows to account properly for local orientation when
345        averaging at N & S pole.
346      - add CPP option EXF_USE_OLD_INTERP_POLE to recover old results regarding
347        exf-interpolation near N & S poles. Undef by default.
348      - add debug check/print on 1rst iter if debugLevel >=2.
349    o pkg/exf:
350      - change masking flags definition (no longer "parameter"), put them in
351        common block and set them in S/R EXF_INIT_FIXED.
352      - change recognized masking flag from s,u,v to c,w,s since the mask
353        to use (maskC,W,S) depends on position on model grid and has little to
354        do with scalar/vector difference; fix masking if using P-coordinates.
355      - fix masking of wind-stress (was wrong if interpolated or read on A-grid)
356        and update results of exp. global_with_exf (x2).
357      - fix setting of zenith-angle table when SHORTWAVE_HEATING is undef.
358    o pkg/obcs
359      - S/R obcs_calc_stevens: fix a small bug (gammat -> gammas where appropriate)
360    o pkg/exf (interpolation):
361      - assume periodicity in X only if input field cover full longitude range.
362      - improve search for lat. index (supposed to be faster, in ~log2(ny) steps,
363        and should vectorise).
364      - fix input lat of the 2 added row (in case we provide N.pole data).
365    
366    checkpoint63h (2011/12/30)
367    o pkg/seaice:
368      - change declaration of UVM from _RL to _RS in order to get B-grid
369        uIce,vIce monitor when _RS = real*4
370    o pkg/offline:
371      - new S/R OFFLINE_RESET_PARMS for resetting main-model params (switch off flags);
372      - compute vertical velocity if not read from file (switch on exactConserv
373        & staggerTimeStep);
374      - fix output of ptracer monitor iter & time for default PTRACERS_monitorFreq.
375    o verification:
376      - update grid-files (in tutorial_held_suarez_cs/input and fizhi-cs-32x32x40/input)
377        with grid-angle generated using "utils/matlab/cs_grid/cubeCalcAngle.m":
378        fix Pb in yG definition @ 2 missing corners (previously yG was averaged);
379      - update output of exp. global_ocean.cs32x15.viscA4 after changing
380        grid-file angles (used here for coriolis-3d);
381      - remove (or gzip) few files not needed to run fizhi-cs experiments.
382    o pkg/exf (vector interpolation):
383      - rotate vector component toward local grid-axis orientation using grid-angles
384        (stored in GRID.h) instead of locally computed rotation angle; keep old code
385        available with exf option EXF_USE_OLD_VEC_ROTATION (undef by default).
386    o pkg/seaice:
387      - allow to compile with exf options ALLOW_ATM_TEMP or ALLOW_DOWNWARD_RADIATION
388        undefined. Fix and remove the stop when ALLOW_RUNOFF is undefined.
389    o pkg/PKG_OPTIONS.h files:
390      - move #include "CPP_OPTIONS.h" just after #include "PACKAGES_CONFIG.h",
391        outside of the #ifdef ALLOW_THISPKG / #endif block.
392      - update verification/*/code/PKG_OPTIONS.h files.
393    o add a verification experiment (offline_exf_seaice/input.seaice) that test
394      the B-grid LSOR solver
395    o pkg/seaice: sort out emissivity and long wave radiation step 2:
396      - add emissivity for snow and ice as new run-time parameters
397        (unfortunately) that default to the corresponding exf values; this
398        changes results in most verification experiments so that for backward
399        compatibility these parameter have to be set explicitly to inconsistent
400        values (ugly);
401      - the exf-flag EXF_LWDOWN_WITH_EMISSIVITY then gets rid off the hard-wired
402        emissivities of 0.97 associated with lwdownloc in S/R seaice_solve4temp
403        until we agree how to handle this bug properly
404    o pkg/exf (interpolation):
405      - add a set of run-time param ({inputfield}_interpMethod), one for
406        each interpolated input field, to select the interpolation method
407        with a value of zero switching off the interpolation;
408      - print interpolation parameters to standard output;
409      - refine exf_check.F accordingly ; stop if USE_NO_INTERP_RUNOFF is defined
410        (to use instead runoff_interpMethod=0 in data.exf).
411      - simplify default setting of interpolation parameters (for all fields,
412        set position to match model grid cell-center position, leading to trivial
413        interpolation in case of regular Lat-Lon grid) and fix for the case of
414        non-uniform delY.
415    o pkg/exf/exf_radiation.F: add the factor ocean_emissivity to lwdown, for
416       within #ifdef EXF_LWDOWN_WITH_EMISSIVITY/#endif. Unless ocean_emissivity=1.
417       this factor is absolutely required, because the lw exitance (= out-going
418       long wave radiation) is emissivity*stefanBoltzmann*T^4 + rho*lwdown,
419       where the reflectivity rho = 1-emissivity for conservation reasons. Once
420       this is established, we can remove the CPP-Flag (if we want to).
421    o pkg/seaice:
422      - qualify a stop statement in S/R seaice_check: EXF_READ_EVAP and
423        ALLOW_BULKFORMULAE are only required if SEAICE_EXTERNAL_FLUXES is defined
424      - sort out emissivity and long wave radiation, step 1: make SEAICE_emissivity
425        what the name implies (and not emissivity*BoltzmannConstant), this means
426        the old default value of 5.5e-8 now means
427        5.5e-8/5.670e-8 = 0.97001763668430343479 as ocean_emissivity in
428        S/R exf_readparms
429      - FV-discretization of the B-grid LSOR solver, turn on with
430        SEAICE_LSRBNEW. This new solver also involves a slight re-organization
431        of the calling routine dynsolver, so that B and C-grid code look a
432        little more alike.
433      - fix index bugs in ostres.F (B-grid code)
434    o pkg/seaice/seaice_ocean_budget.F: change (unused) code to make it look better
435    o pkg/seaice/seaice_readparms.F: make ocean_emissivity*stefanBoltzmann the
436      default for SEAICE_emissivity, if useEXF; requires setting a wrong
437      parameter value in global_ocean.cs32x15/input.seaice/data.seaice for
438      backward compatiblity
439    o model/src: use sigmaR in calc_ivdc
440    
441    checkpoint63g (2011/12/16)
442    o pkg/seaice/seaice_growth.F:
443      fix heat conservation of the coupled ocean-seaice system.
444      when SEAICE_HEAT_CONSERV_FIX is defined, the mismatch of
445      solid vs liquid water treatment is resolved via QNET.
446    o pkg/seaice/seaice_growth.F:
447      add missing term for sublimation in saltFlux, which was breaking conservation.
448    o pkg/seaice/seaice_model.F:
449      Remove this patholigical case treatment in evolution branch,
450      where it is un-necessary and breaks conservation.
451      Update global_ocean.cs32x15/results accordingly for
452      output.seaice.txt output_adm.seaice.txt and output_adm.seaice_dynmix.txt
453    o model/src:
454      useRealFreshWaterFlux: remove masking of EmPmP (using maskInC) in
455      external_forcing_surf.F and apply mask directly in S/R SOLVE_FOR_PRESSURE.
456    o pkg/obcs:
457      modify Stevens boundary conditions so that S/R obcs_calc_stevens computes
458      tendency for temperature and salinity that is then applied to update
459      theta and salt in S/R obcs_apply_ts; this requires proper masking of all
460      horizontal advection and diffusion contributions on the boundary (in
461      S/Rs gad_advection, gad_calc_rhs, gmredi_rtransport, gmredi_calc_diff), and
462      removing the mask in S/R timestep_tracer. The advantage of this approach is
463      that the updated tracer values include contributions from the surface
464      forcing and vertical diffusion.
465      This modification changes exp4.stevens because of vertical diffusion.
466    o model/src:
467      change non-curvilinear grid setting to also work with exch2 + blank tiles:
468      - move delX,delY to new header file (SET_GRID.h) and adjust length to 1rst
469        face dimensions.
470      - new S/R INI_LOCAL_GRID to define model tile-local grid (using same units
471        as delX,delY) and called from S/R INI_CARTESIAN_GRID, INI_CYLINDER_GRID
472        and INI_SPHERICAL_POLAR_GRID.
473      change test-experiment global_ocean.90x40x15:
474      - split the domain in many more tiles (9x4 tiles of 10x10 each);
475      - switch to exch2 and remove 1 blank-tile (but only for MPI test).
476      - update results of both test (std & dwnslp).
477    o pkg/diagnostics/diagstat_calc.F: fix problem with non-initialised halos in
478       tmp-fields for TARGET_NEC_SX at the cost of extra loops and less vectorisation
479    o model/src:
480      - take sigma-coords related code out of update_etah.F into new S/R UPDATE_ETAWS
481        and fix initialisation when using sigma-coords.
482  o model/src:  o model/src:
483   - improve Gael's changes from Jan 14, 2011 "addition of an 'update' of hfacc etc.       - improve Gael's changes from Jan 14, 2011 "addition of an 'update' of hfacc etc.
484     to their current value at the beginning of forward_step.F": add a new run-time     to their current value at the beginning of forward_step.F": add a new run-time
485     switch "doResetHFactors" (default=false) and use it to do (or not) the resetting.     switch "doResetHFactors" (default=false) and use it to do (or not) the resetting.
486   - set doResetHFactors=T in the following test exp:   - set doResetHFactors=T in the following test exp:
487      global_ocean.90x40x15/input (rStar) & input.dwnslp (linFS),      global_ocean.90x40x15/input (rStar) & input.dwnslp (linFS),

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