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revision 1.1539 by jmc, Wed Nov 30 15:43:29 2011 UTC revision 1.1624 by jmc, Fri Mar 16 21:58:31 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 model/src:
8       - selectAddFluid (ALLOW_ADDFLUID): add missing term in horizontal momentum
9         flux-form (mom_fluxform.F) and vertical momentum (calc_gw.F) equations.
10       - SOLVE_DIAGONAL: switch default to use adjoinable & vectorized version
11         (#undef SOLVE_DIAGONAL_LOWMEMORY); update output of exp. front_relax.bvp.
12    o model/src: solve_*diagonal.F
13       - replace division with multiplication by inverse (similar to original version)
14         update output of AD exp. global_ocean.90x40x15.
15       - fix pkg/gmredi/gmredi_calc_psi_bvp.F & pkg/ggl90/ggl90_calc.F
16         to enable the use of the vectorized & differentiable solve_tridiagonal.F
17       - test exp. global_ocean.90x40x15/input_ad: switch to advection scheme 20 for
18         vertical advection (to get solve_tridiagonal tested in AD mode).
19    o pkg/seaice: ECCO-CLIVAR merge:
20      1. seaice AREA relaxation
21         * CPP option: SEAICE_ALLOW_AREA_RELAXATION
22         * runtime flag: SEAICE_tauAreaObsRelax
23      2. modified global mean cost imbalance code: CPP option
24          ALLOW_SSH_GLOBMEAN_COST_CONTRIBUTION
25    o another iteration on solve_*diagonal.F
26       Make choices independent of AUTODIFF
27       Default will be the adjoinable vectorized version.
28       Alternative choices are:
29       * non-adjoinable original version with low memory footprint:
30         #define SOLVE_DIAGONAL_LOWMEMORY
31       * still adjoinable but does not vectorize (k as inner-most loop):
32         #define SOLVE_DIAGONAL_KINNER (keeping SOLVE_DIAGONAL_LOWMEMORY undef)
33    o testreport
34     - add option to use a home made wrapper around "make"
35     - remove MITGCM_IEEE env. variable (no longer active)
36    o pkg/shelfice
37     - improve computation of friction velocity for velocity dependent
38       exchange coefficients: include velocities into SHELFICEBoundaryLayer
39       block to average velocities vertically
40     - add TAF store directives for SHI_ALLOW_GAMMAFRICT
41    o Modify diagonal solvers, now three versions (upon request):
42      #ifndef SOLVE_DIAGONAL_AUTODIFF
43        1. default version (dating back a while ago)
44      #else /* def SOLVE_DIAGONAL_AUTODIFF */
45      # ifdef SOLVE_DIAGONAL_KINNER
46        2. adjoinable version with k-innermost loop (G. Forget)
47      # else
48        3. adjoinable vectorized version of 2.
49      # endif
50      #endif /* SOLVE_DIAGONAL_AUTODIFF */
51      All flags are currently set within routines, but could/should be moved to CPP-options.
52      Array bounds for 1. are as before, for 2.,3. cover the entire domain
53      (could be changed for 1. too).
54    o verification/lab_sea (fwd):
55      - update the 4 fwd lab_sea test experiment: no longer SEAICE_GROWTH_LEGACY,
56        use 7 categories (except hb87), new solve4temp params (except salt_plume),
57        constant salinity (=4) or variable salinity (salt_plume) done through
58        SItracer.
59    o pkg/seaice:
60      - rename parameters: SIsalFrac to SEAICE_saltFrac & SIsal0 to SEAICE_salt0;
61      - remove old parameters ( SEAICE_freeze, SEAICEturbFluxFormula, SEAICE_gamma_t,
62         SEAICE_gamma_t_frz, SEAICE_availHeatTaper & SEAICE_availHeatFracFrz)
63        from SEAICE_PARMS.h ; still need to fix seaice_cost_sst.F (broken when
64        SEAICE_freeze got retired) but already better than previously with
65        SEAICE_freeze=123456.7 deg.C;
66      - move setting of facOpenGrow/Melt from SEAICE_INIT_FIXED to SEAICE_READPARMS
67        (safer multi-threaded setting); always set SEAICEuseEVP;
68      - setting of ocean-ice turb. flux coeff: moved from SEAICE_CHECK to
69        SEAICE_READPARMS & SEAICE_INIT_FIXED (this fixes wrong summary report);
70        stop if multiple specifications for the same coeff; make sure default
71        SEAICE_mcPheePiston is compatible with drF(1) & deltaT.
72    o pkg/obcs:
73      - allow to switch to upwind 1rst order advection scheme for the advective
74        flux computation at the open-boundary; disabled for adjoint built.
75    o pkg/ptracers:
76      - rename PTRACERS_RESTART.h -> PTRACERS_START.h
77      - rename ptracers_fields_blocking_exchanges.F -> ptracers_fields_blocking_exch.F
78      - add parameter to decide when to start a tracer; use internal flag to
79        know which tracer to step-forward; switch this internal flag at the top
80        of forward_step.F (new S/R PTRACERS_SWITCH_ONOFF); for now, not enabled
81        for adjoint built.
82    o pkg/seaice:
83      - add SEAICE_SIZE.h anywhere in the code where SEAICE.h is included ;
84      - move MULTDIM declaration and setting from SEAICE.h to SEAICE_SIZE.h ;
85      - keep experiment offline_exf_seaice truly single category (set MULTDIM=1).
86    o pkg/ecco:
87      - fix writing of output file DiagnosCost_ClimSalt/Theta
88        and DiagnosCost_DriftSalt/Theta (if multi-tiles per proc).
89    o pkg/seaice:
90      - add missing initialisation of COR_ICE array in dynsolver.F
91      - merging SEAICE_MULTICATEGORY define and undef cases. Now the same code is
92        compiled either way, and is tested in all exps (multidim was only tested
93        in lab_sea ad before).
94      - cosmetic change to prepare for future addition of ITD. no change to results.
95        no defaults change.
96      - added run time param SEAICE_multDim (7 for SEAICE_MULTICATEGORY, 1 otherwise).
97      - by lack of adequate verification experiments, I further used custom versions
98        of global_ocean.cs32x15 to test multicat or not, with pickup or not. All
99        should be correct.
100      - avoid recomputations in ad.
101    o array initialisation in adjoint mode:
102      1) pkg/mom_common/mom_calc_ke.F:
103        add full array initialisation of KE inside mom_calc_ke.F (ALLOW_AUTODIFF_TAMC):
104        The S/R which calls MOM_CALC_KE initialises KE but in some recomputation
105        part this initialisation is gone, resulting in Floating Point Exception
106        (caught by open64 compiler with debug option).
107      2) model/src/convective_weights.F
108        set output convectCount over the full array range (instead of doing
109        an update): this fix a similar issue when called within recomputation (adjoint)
110        which could by-pass the initialisation (normally done in the caller S/R).
111    o pkg/seaice:
112      - final version of turbulent flux params, as agreed at MIT ice meet:
113           SEAICE_mcPheePiston (default is ~ 0.000875)
114           SEAICE_mcPheeTaper (default is 0.)
115           SEAICE_frazilFrac (defualt is 1.)
116           SEAICE_mcPheeStepFunc (default is false)
117      - changes results at trunction error level
118      - ifdef SEAICE_EXTERNAL_FLUXES, disallow SEAICE_waterAlbedo
119    o added pkg/frazil:
120      - see frazil_description.tex for details
121      - verification experiment is global_with_exf/input.yearly; changes output.yearly.txt
122    o pkg/shelfice/shelfice_thermodynamics.F
123      - fix exponents for velocity dependent exchange coefficients: change
124        from 2/3(=0) to 0.66666666666666667
125      - move computation of velocity dependent exchange coefficients into
126        separate loop, so that it applies to both thermodynamics
127      - move some divisions by constants out of loops
128    
129    checkpoint63j (2012/02/16)
130    o pkg/seaice:
131      - overhaul of seaice_summary.F after feb 2012 clean-up of seaice_growth.F etc.
132      - SItracer:  added run time params, and allow coupling to ocn salinity.
133    o pkg/seaice: remove (almost) all divisions by constants within loops
134      in seaice_growth.F and seaice_solve4temp.F, this changes (only) the cg2d
135      results of global_ocean.cs32x15.seaice from 16 to 11 digits (but only
136      those, caused by 1/QI -> recip_QI) -> update output.seaice.txt,
137      output_adm.seaice_dynmix.txt and also lab_sea: output_adm.evp.txt
138    o pkg/seaice :
139      - simplify McPhee tapering, and allow to use it with SEAICEturbFluxFormula
140        = 1 or 2, using newly added run time parameter SEAICE_availHeatTaper.
141      - fix d_AREAbyATM, d_AREAbyOCN, d_AREAbyICE diags I broke in r1.148.
142      - add permanent SItflux diag that corresponds to TFLUX but includes
143        ice+snow. Hence SItflux-TFLUX should match the ice+snow heat budget.
144      - allow activation/testing of a fix for suspected missing term in
145        ocn-ice heat budget (to be confirmed). To test this, you want to
146        undef SEAICE_DISABLE_HEATCONSFIX, and then set the run time param
147        SEAICEheatConsFix to .TRUE. that also allows the 'SIaaflux' diagnostic.
148      - no change in results, fwd or ad.
149    o global_ocean.cs32x15/results: 3 changes following from the pkg/seaice commit below:
150      - switch to variable freezing point.
151           Results change : cg2d -> 1 digits; ad -> 3-6-6 digits.
152      - bug fix : the sublimation term that was missing is now activated.
153           Results change : cg2d -> 2 digits; ad -> 8-6-6 digits.
154      - bug fix : flooding sign term for SIsal0.NE.0.
155           Result change : cg2d -> 8 digits; ad -> 11-12-9 digits.
156    o pkg/seaice:
157      - unified freezing point treatment : the old SEAICE_VARIABLE_FREEZING_POINT
158        is now the default, and the old default constant freezing point is recovered
159        with SEAICE_tempFrz0    = -1.96,
160             SEAICE_dTempFrz_dS = 0.,
161      - retire SEAICE_freeze (= the old way of specifycing the constant freezing point)
162      - remove ALLOW_SEAICE_FLOODING brackets; run time switch is already there.
163      - bug fix (thanks to M. Losch) : the sublimation term that was missing is now
164        activated. To reproduce old results with this bug define SEAICE_DISABLE_SUBLIM.
165      - bug fix (silly me) : flooding sign term (seaice_growth.F r 1.149line 1211)
166        was wrong for SIsal0.NE.0. Changes cs32x15 results (see above item for detail).
167      - bug fix (thanks to O. Jahn) : area loss for melting  got messed up in
168        seaice_growth r149 for legacy branch (no results change).
169      - introduce SEAICE_CAP_SUBLIM : caps sublimation heat flux in solve4temp (code
170        from I. Fenty).
171      - results did not change except for global_ocean.cs32x15, mostly due to the
172        switch to variable freezing point (see above item for detail).
173    o pkg/thsice:
174      - fix and simplify interface to salt_plume pkg ; diagnose directly amount of
175        seawater freezing in thsice_calc_thickn (not used).
176    o pkg/seaice: turbulent flux term specification via run time params.
177      - replace CPP switches with run time switches to facilitate testing
178      - retired CPPs : MCPHEE_OCEAN_ICE_HEAT_FLUX,
179                       GRADIENT_MIXED_LAYER_TURBULENCE_FACTOR
180      - added runtime parameter : SEAICEturbFluxFormula
181      - move Mcphee constants to SEAICE_PARAMS.h
182      - seaice_readparms.F : read turbulent flux term params (SEAICEturbFluxFormula;
183                 SEAICE_availHeatFrac/Frz, or SEAICE_gamma_t/_frz if apply);
184                 remove seaice_summary call (moved to seaice_init_fixed)
185      - seaice_init_fixed.F : set SEAICE_availHeatFrac/Frz depending on
186        SEAICEturbFluxFormula, and seaice_summary call (moved from seaice_readparms)
187      - seaice_summary.F : add missing report of read turbulent flux term set up
188                           and SITRACER.
189      - seaice_check.F : check range; inform and stop if retired CPPs are used
190                         (incl. SEAICE_AGE).
191      - seaice_growth.F : unified use of SEAICE_availHeatFrac/Frz, without
192             CPP switch, same computation as before for the different options.
193      - change results at the truncation level.
194    o pkg/seaice:
195      - remove un-used parameters LAD & MAX_TICE ; add new run-time parameters:
196        useMaykutSatVapPoly (default=F), postSolvTempIter (default=2) and
197        SEAICE_wetAlbTemp (default=-1e-3). Remove option SEAICE_SOLVE4TEMP_LEGACY.
198      - update verification/*/input*/data.seaice:
199        to reproduce previous results with former #defined SEAICE_SOLVE4TEMP_LEGACY
200        code, set useMaykutSatVapPoly=T & postSolvTempIter=0 ;
201        and to reproduce previous results with former non-SOLVE4TEMP_LEGACY code,
202        set SEAICE_wetAlbTemp=0 & SEAICE_snowThick=0.
203    o pkg/seaice/seaice_solve4temp.F (SOLVE4TEMP_LEGACY):
204      - remove LEGACY code for solving for tsurf (A1,A2,A3) but maintain the same
205        algorithm (same choice: useMaykutPolySatVap=T, postSolvTempIter=0);
206        difference in results only due to machine truncation.
207      - remove MAX_TICE (tsurf is always =< TMELT anyway); keep MIN_TICE if using
208        MaykutPolySatVap; keep MIN_LWDOWN.
209      - adapt SEAICE_MODIFY_GROWTH_ADJ code (untested) to non-legacy formulation.
210      - update output of verification exp. lab_sea (4 fwd: 11 cg2d digits except hb87,
211        + 3 AD: 6 digits except evp) and offline_exf_seaice.seaice (12 digits).
212    o pkg/salt_plume:
213      - isolate saltPlumeFlux array exch into a specific S/R called from
214        do_oceanic_phys.F
215      - add interface to pkg/salt_plume (filling of saltPlumeFlux) in pkg/thsice.
216    o verification:
217      - move untested set-up to MITgcm_contrib/verification_other.
218    o pkg/seaice:
219      - retire old way of SEAICE_AGE. Now replaced with ALLOW_SITRACER.
220    o pkg/seaice:
221      - seaice_solve4temp.F (keeping results unchanged):
222        * add 2 future run-time params to select which saturation vapor pressure
223          formula is used and how post-iteration fluxes are set.
224          Temporary set these 2 params according to option SOLVE4TEMP_LEGACY;
225        * New piece of code (not used) to update surf. atmos. heat flux F_ia using
226          the linearized expression to stay consistent with tsurf finding.
227      - seaice_freedrift.F avoid floating exception in sqrt(y) since y=sqrt(x*x)-x
228        can be < 0.
229    o pkg/seaice/seaice_solve4temp.F (SOLVE4TEMP_LEGACY undef):
230      - remove from F_ia (and from it's derivative dFiDTs1) the contribution of
231        conductive heat flux F_c , and add it explicitly when updating tsurf as
232        solution of: Fc = Fia + d/dT(Fia - Fc) *delta.tsurf
233        so that now F_ia has a consistent meaning through the entire routine.
234        This causes differences at truncation level: update output of fwd exp.
235        global_ocean.cs32x15.seaice.
236    o pkg/seaice:
237      - lots of editing/cleaning in seaice_solve4temp.F + better documentation
238        of arrays, sign/direction of fluxes; no effect on results.
239      - replace hard coded 273.16 (=previous value of celsius2K) by celsius2K
240        in seaice_budget_ocean.F & seaice_solve4temp.F (SOLVE4TEMP_LEGACY part);
241        note: this should have been done before changing celsius2K default.
242      - to keep results unchanged, add back old value of celsius2K in verification
243        exp. input*/data : lab_sea (AD), offline_exf_seaice (fwd+AD) & seaice_obcs
244      - replace hard coded seawater freezing temp in seaice_solve4temp.F (part
245        SOLVE4TEMP_LEGACY) of 271.20 (=previous value of celsius2K + default
246        value of SEAICE_freeze) by celsius2K+SEAICE_freeze so that seawater
247        freezing temp is consistent with value in seaice_growth.F ; this causes
248        differences at machine truncation level: update lab_sea AD output (3/4).
249    o pkg/seaice:
250      - mask (in exf_init_fixed.F) atemp,aqh,evap,precip,runoff,lwflx,areamask
251        and climsst/sss even when using seaice (to prevent calculation that might
252        use SST on land); does not affect any verification exp.
253      - apply mask to taux,tauy (in seaice_get_dynforcing.F); update output
254        of lab_sea.fd & lab_sea.hb87 and global_ocean.cs32x15.seaice_dynmix.
255    o pkg/seaice/seaice_growth.F: add mask to avoid non-zero ice thickness
256      over land (non-legacy code)
257    o vectorize salt_plume package:
258      - add extra code to salt_plume_frac and salt_plume_tendency_apply_s
259      - this code computes plumebk everywhere (also over land), thus requires
260        code to avoid divisions by zero and catch the case of kLev=Nr.
261      - efficiency of salt_plume_frac is still sub-optimal
262    o tools (genmake2):
263      - fix makefile NAME specification (option: -makefile NAME) by adding
264        "-f $MAKEFILE" in few places where it was missing including makedepend
265        command (contribution from Paul).
266    
267    checkpoint63i (2012/01/24)
268    o model/src:
269      - add factorized versions of some EOS code to find_rho.F,
270        define USE_FACTORIZED_EOS to turn it on (default for TARGET_NEC_SX)
271    o model/src:
272      - add celsius2K to namelist PARM01; remove unused recip_rhoNil from PARAMS.h;
273      - change default celsius2K from 273.16 to 273.15
274      - to keep results unchanged, add back old value of celsius2K in verification
275        exp. input*/data : aim.5l_cs, 1D_ocean_ice_column, lab_sea (fwd),
276         global_ocean.cs32x15(seaice) & cpl_aim+ocn(input_atm).
277    o model/src: add a little initialisation trick to find_rho.F and find_alpha.F
278      to make TAF generate vectorizable code
279    o pkg/seaice/seaice_evp.F: add code (copied from CICE) that avoids underflows.
280       Turn on by defining SEAICE_EVP_ELIMINATE_UNDERFLOWS. Most compilers
281       have flags that do this more efficiently.
282    o pkg/diagnostics/diagstats_calc.F
283      - for TARGET_NEC_SX fix the treatment of the scaling factor tmpFac=scaleFact
284    o pkg/obcs (with exch2):
285      - derive OB indices in overlap region from OB-InsideMask (in obcs_init_fixed.F)
286        and remove code (in obcs_readparms.F) which was based on EXCH of indices
287        (through buffer) and did not account for exch2 (e.g., CS-grid) topology.
288    o pkg/exf and seaice exp:
289      - change offline_exf_seaice.seaicetd test exp. to use default DIFF1 value (=0)
290        so that switching off area & heff advection flags does not affect results.
291      - change default EXF_LWDOWN_WITH_EMISSIVITY to #define in EXF_OPTIONS.h
292      - keep exp. seaice_obcs & 1D_ocean_ice_column(ad) unchanged (using #undef
293        EXF_LWDOWN_WITH_EMISSIVITY) and, using pkg/exf default emissivities, update
294        results of verification experiments: 1D_ocean_ice_column(fwd),
295        global_ocean.cs32x15.seaice(fwd+ad) & seaice_dynmix(ad), lab_sea (all 8)
296        and offline_exf_seaice (all 4).
297    o pkg/seaice:
298      - remove array YNEG, RIVER, TMIX (replaced by local var) from common block;
299        remove also areaNm1 & hEffNm1 when SEAICE_GROWTH_LEGACY is undef.
300      - fix bug: areaNm1 & hEffNm1 are needed in seaice_growth (SEAICE_GROWTH_LEGACY)
301        but were not filled when resp. SEAICEadvArea=F & SEAICEadvHeff=F and
302        not multi-dim advection;
303      - fix seaice_growth.F to compile with both SEAICE_GROWTH_LEGACY and
304        SHORTWAVE_HEATING #undef.
305    o optim: make Makefile more robust (?)
306    o pkg/obcs:
307      * fix treatment of obcs_read_pickup for TAF
308    o pkg/shelfice:
309      * add missing initialisation of num_shifwflx
310      * new adjoint verification exp. for isomip
311      * change Prandtl and Schmidt numbers from generic formulations
312        (in terms of model diffus. and visc.) to separate runtime
313        parameters, with Holland and Jenkins (1999) default values.
314    o pkg/exf (interpolation):
315      - extended input field (2 rows) near the N & S poles:
316        * fill in with the symetric value (when even Nb of data in longitude)
317        * add average value at the poles only for scalar quantities ; for vector
318          component interpolation, skip the averaging and keep duplicated values,
319          unless the 2 components have same location (uvInterp=T) in which case
320          interpolate the 2 components together using S/R EXF_INTERP_UV.
321      - new S/R EXF_INTERP_UV to interpolate the 2 components of a vector field
322        together: this allows to account properly for local orientation when
323        averaging at N & S pole.
324      - add CPP option EXF_USE_OLD_INTERP_POLE to recover old results regarding
325        exf-interpolation near N & S poles. Undef by default.
326      - add debug check/print on 1rst iter if debugLevel >=2.
327    o pkg/exf:
328      - change masking flags definition (no longer "parameter"), put them in
329        common block and set them in S/R EXF_INIT_FIXED.
330      - change recognized masking flag from s,u,v to c,w,s since the mask
331        to use (maskC,W,S) depends on position on model grid and has little to
332        do with scalar/vector difference; fix masking if using P-coordinates.
333      - fix masking of wind-stress (was wrong if interpolated or read on A-grid)
334        and update results of exp. global_with_exf (x2).
335      - fix setting of zenith-angle table when SHORTWAVE_HEATING is undef.
336    o pkg/obcs
337      - S/R obcs_calc_stevens: fix a small bug (gammat -> gammas where appropriate)
338    o pkg/exf (interpolation):
339      - assume periodicity in X only if input field cover full longitude range.
340      - improve search for lat. index (supposed to be faster, in ~log2(ny) steps,
341        and should vectorise).
342      - fix input lat of the 2 added row (in case we provide N.pole data).
343    
344    checkpoint63h (2011/12/30)
345    o pkg/seaice:
346      - change declaration of UVM from _RL to _RS in order to get B-grid
347        uIce,vIce monitor when _RS = real*4
348    o pkg/offline:
349      - new S/R OFFLINE_RESET_PARMS for resetting main-model params (switch off flags);
350      - compute vertical velocity if not read from file (switch on exactConserv
351        & staggerTimeStep);
352      - fix output of ptracer monitor iter & time for default PTRACERS_monitorFreq.
353    o verification:
354      - update grid-files (in tutorial_held_suarez_cs/input and fizhi-cs-32x32x40/input)
355        with grid-angle generated using "utils/matlab/cs_grid/cubeCalcAngle.m":
356        fix Pb in yG definition @ 2 missing corners (previously yG was averaged);
357      - update output of exp. global_ocean.cs32x15.viscA4 after changing
358        grid-file angles (used here for coriolis-3d);
359      - remove (or gzip) few files not needed to run fizhi-cs experiments.
360    o pkg/exf (vector interpolation):
361      - rotate vector component toward local grid-axis orientation using grid-angles
362        (stored in GRID.h) instead of locally computed rotation angle; keep old code
363        available with exf option EXF_USE_OLD_VEC_ROTATION (undef by default).
364    o pkg/seaice:
365      - allow to compile with exf options ALLOW_ATM_TEMP or ALLOW_DOWNWARD_RADIATION
366        undefined. Fix and remove the stop when ALLOW_RUNOFF is undefined.
367    o pkg/PKG_OPTIONS.h files:
368      - move #include "CPP_OPTIONS.h" just after #include "PACKAGES_CONFIG.h",
369        outside of the #ifdef ALLOW_THISPKG / #endif block.
370      - update verification/*/code/PKG_OPTIONS.h files.
371    o add a verification experiment (offline_exf_seaice/input.seaice) that test
372      the B-grid LSOR solver
373    o pkg/seaice: sort out emissivity and long wave radiation step 2:
374      - add emissivity for snow and ice as new run-time parameters
375        (unfortunately) that default to the corresponding exf values; this
376        changes results in most verification experiments so that for backward
377        compatibility these parameter have to be set explicitly to inconsistent
378        values (ugly);
379      - the exf-flag EXF_LWDOWN_WITH_EMISSIVITY then gets rid off the hard-wired
380        emissivities of 0.97 associated with lwdownloc in S/R seaice_solve4temp
381        until we agree how to handle this bug properly
382    o pkg/exf (interpolation):
383      - add a set of run-time param ({inputfield}_interpMethod), one for
384        each interpolated input field, to select the interpolation method
385        with a value of zero switching off the interpolation;
386      - print interpolation parameters to standard output;
387      - refine exf_check.F accordingly ; stop if USE_NO_INTERP_RUNOFF is defined
388        (to use instead runoff_interpMethod=0 in data.exf).
389      - simplify default setting of interpolation parameters (for all fields,
390        set position to match model grid cell-center position, leading to trivial
391        interpolation in case of regular Lat-Lon grid) and fix for the case of
392        non-uniform delY.
393    o pkg/exf/exf_radiation.F: add the factor ocean_emissivity to lwdown, for
394       within #ifdef EXF_LWDOWN_WITH_EMISSIVITY/#endif. Unless ocean_emissivity=1.
395       this factor is absolutely required, because the lw exitance (= out-going
396       long wave radiation) is emissivity*stefanBoltzmann*T^4 + rho*lwdown,
397       where the reflectivity rho = 1-emissivity for conservation reasons. Once
398       this is established, we can remove the CPP-Flag (if we want to).
399    o pkg/seaice:
400      - qualify a stop statement in S/R seaice_check: EXF_READ_EVAP and
401        ALLOW_BULKFORMULAE are only required if SEAICE_EXTERNAL_FLUXES is defined
402      - sort out emissivity and long wave radiation, step 1: make SEAICE_emissivity
403        what the name implies (and not emissivity*BoltzmannConstant), this means
404        the old default value of 5.5e-8 now means
405        5.5e-8/5.670e-8 = 0.97001763668430343479 as ocean_emissivity in
406        S/R exf_readparms
407      - FV-discretization of the B-grid LSOR solver, turn on with
408        SEAICE_LSRBNEW. This new solver also involves a slight re-organization
409        of the calling routine dynsolver, so that B and C-grid code look a
410        little more alike.
411      - fix index bugs in ostres.F (B-grid code)
412    o pkg/seaice/seaice_ocean_budget.F: change (unused) code to make it look better
413    o pkg/seaice/seaice_readparms.F: make ocean_emissivity*stefanBoltzmann the
414      default for SEAICE_emissivity, if useEXF; requires setting a wrong
415      parameter value in global_ocean.cs32x15/input.seaice/data.seaice for
416      backward compatiblity
417    o model/src: use sigmaR in calc_ivdc
418    
419    checkpoint63g (2011/12/16)
420    o pkg/seaice/seaice_growth.F:
421      fix heat conservation of the coupled ocean-seaice system.
422      when SEAICE_HEAT_CONSERV_FIX is defined, the mismatch of
423      solid vs liquid water treatment is resolved via QNET.
424    o pkg/seaice/seaice_growth.F:
425      add missing term for sublimation in saltFlux, which was breaking conservation.
426    o pkg/seaice/seaice_model.F:
427      Remove this patholigical case treatment in evolution branch,
428      where it is un-necessary and breaks conservation.
429      Update global_ocean.cs32x15/results accordingly for
430      output.seaice.txt output_adm.seaice.txt and output_adm.seaice_dynmix.txt
431    o model/src:
432      useRealFreshWaterFlux: remove masking of EmPmP (using maskInC) in
433      external_forcing_surf.F and apply mask directly in S/R SOLVE_FOR_PRESSURE.
434    o pkg/obcs:
435      modify Stevens boundary conditions so that S/R obcs_calc_stevens computes
436      tendency for temperature and salinity that is then applied to update
437      theta and salt in S/R obcs_apply_ts; this requires proper masking of all
438      horizontal advection and diffusion contributions on the boundary (in
439      S/Rs gad_advection, gad_calc_rhs, gmredi_rtransport, gmredi_calc_diff), and
440      removing the mask in S/R timestep_tracer. The advantage of this approach is
441      that the updated tracer values include contributions from the surface
442      forcing and vertical diffusion.
443      This modification changes exp4.stevens because of vertical diffusion.
444    o model/src:
445      change non-curvilinear grid setting to also work with exch2 + blank tiles:
446      - move delX,delY to new header file (SET_GRID.h) and adjust length to 1rst
447        face dimensions.
448      - new S/R INI_LOCAL_GRID to define model tile-local grid (using same units
449        as delX,delY) and called from S/R INI_CARTESIAN_GRID, INI_CYLINDER_GRID
450        and INI_SPHERICAL_POLAR_GRID.
451      change test-experiment global_ocean.90x40x15:
452      - split the domain in many more tiles (9x4 tiles of 10x10 each);
453      - switch to exch2 and remove 1 blank-tile (but only for MPI test).
454      - update results of both test (std & dwnslp).
455    o pkg/diagnostics/diagstat_calc.F: fix problem with non-initialised halos in
456       tmp-fields for TARGET_NEC_SX at the cost of extra loops and less vectorisation
457    o model/src:
458      - take sigma-coords related code out of update_etah.F into new S/R UPDATE_ETAWS
459        and fix initialisation when using sigma-coords.
460    o model/src:
461     - improve Gael's changes from Jan 14, 2011 "addition of an 'update' of hfacc etc.
462       to their current value at the beginning of forward_step.F": add a new run-time
463       switch "doResetHFactors" (default=false) and use it to do (or not) the resetting.
464     - set doResetHFactors=T in the following test exp:
465        global_ocean.90x40x15/input (rStar) & input.dwnslp (linFS),
466        global_ocean.cs32x15/input.seaice (rStar), hs94.cs-32x32x5/input.impIGW (linFS)
467        and tutorial_global_oce_in_p (nonLinFS in p)
468    o pkg/ecco
469      - added IES cost term
470    o verification/advect_xz
471      - scale down the depth by 1/100 (from 200 km to just 2.km)
472      - add secondary test using divergent flow, r-star and implicit vertical advection.
473      - add note (check_conserve_TS.txt) and matlab script to check global
474        conservation of T & S with NonLin-FreeSurf and Adams-Bashforth.
475    o pkg/rbcs:
476      - add missing relaxUFile & relaxVFile in namelist (in rbcs_readparms.F).
477    o pkg/obcs (Stevens BCs):
478      - fix various problems in the phase speed computations of the Stevens
479        boundary conditions:
480        - sign error for western and southern boundaries,
481        - time tendencies were underestimated by factor of dTracerLev and some just
482          zero (for multidim advection schemes) -> now estimate time tendencies
483          from difference between previous (n) time level and the one before (n-1);
484          this requires storing a field per tracer per boundary, also in the pickup
485          files.
486        - replace deltaTmom in cflMer/Zon computation with dTracerLev
487        - set default phase velocity to cflMer/Zon
488      - update verification experiment exp4.stevens
489    o pkg/generic_advdiff (implicit_r):
490      - fix implicit vertical advection conservation with AB and/or NonLin-FreeSurf
491        (remove Tr*d/dz(w) in gad_implicit_r.F and add it in gad_calc_rhs.F);
492      - fix implicit vertical diffusion or advection with NonLin FreeSurf
493        (was using current recip_hFacC instead of future recip_hFacC): set future
494        recip_hFac in thermodynamics.F and pass & use it in all vertical implicit
495        solver S/R ;
496      - fill diagnostics of vertical advective fluxes (computed from tendency)
497        when using implicit vert. advection;
498      - update output of exp that uses NonLin-FreeSurf & implicit vertical diffusion:
499         global_ocean.90x40x15 (fwd+AD), global_ocean.cs32x15 (4 fwd +4 AD),
500         tutorial_global_oce_in_p (fwd), tutorial_tracer_adjsens (AD)
501         and cpl_aim+ocn (used in ocean); to be fixed: bottom_ctrl_5x5.
502    o pkg/diagnostics:
503      - add diags for T & S tendency which goes through Adams-Bashforth.
504    
505  checkpoint63f (2011/11/30)  checkpoint63f (2011/11/30)
506  o pkg/obcs/obcs_calc_stevens.F:  o pkg/obcs/obcs_calc_stevens.F:
507    - join some loops to reduce number of if-statements    - join some loops to reduce number of if-statements

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