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revision 1.1505 by jmc, Mon Sep 26 19:00:49 2011 UTC revision 1.1637 by jmc, Mon Mar 26 19:54:58 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/exch2:
8      - add argument "updateCorners" to S/R exch2_get_uv_bounds (enable to
9        activate EXCH_IGNORE_CORNERS in vector EXCH S/R).
10      - switch 1rst EXCH call to IGNORE_CORNERS (instead of UPDATE_CORNERS)
11        but keep the 2nd with UPDATE_CORNERS: this prevents overwriting good data
12        with bad ones coming from a not-yet-updated halo.
13        This should fix the problem when sNx <> sNy and GCD(sNx,sNy) < 2*Olx.
14    o pkg/frazil:
15        move FrzForcT diag from frazil_diagnostics_state.F to frazil_calc_rhs.F
16        http://mitgcm.org/pipermail/mitgcm-devel/2012-March/005384.html
17    o model/src/config_check.F: add a check for OLx>sNx/OLy>sNy
18    o verification/lab_sea
19      * #undef SEAICE_EXCLUDE_FOR_EXACT_AD_TESTING
20      * #define ALLOW_SST_CONTROL & ALLOW_SST_CONTROL
21      * nTimeSteps 3 -> 4
22      * changed reference output accordingly
23    o pkg/ctrl:
24      * fix ctrl_get_gen for xx_sst, xx_sss
25    o pkg/fizhi:
26      - fix 2 calls to S/R GRD2MSC (argument igrd) in update_earth_exports.F
27        update results of exp. fizhi-cs-32x32x40 (fail with only 6 digits for cg2d)
28      - by default, use new version of S/R GETPWHERE (#define TRY_NEW_GETPWHERE);
29        fix few out-of-bounds indices in referencing vars (initialise igrd to 1);
30        clean-up fizhi_turb.F (remove unused & uninitialised qdiaglsm array).
31    o pkg/gmredi:
32      - add diagnostic of Redi (main diagnonal) vertical diffusive flux of Temp
33    o pkg/fizhi:
34      - fix few initialisation and multi-tile Pb: aqualev & gridalt now pass the
35        (old)aces open64 tuv test.
36    o pkg/icefront: fix bug and reorder loop in icefront_init_varia.F
37    o pkg/mom_vecinv:
38      - fix 1 loop range in mom_vecinv.F to be like all the other loops which
39        set/update gu,gv/Diss (fix Pb of uninitialised fVerUkp in admom_vecinv
40        with non-lin free-surf).
41    o model/src: move k-loop outside of i/j-loops when (re-)computing R_low
42      in ini/update_masks_etc.F in order to avoid -O3 optimization problems with
43      some compilers (gfortran 4.6.0 on MacOS)
44    o momentum:
45      - separate fVer?(:,:,kUp) & fVer?(:,:,kDown) in argument list of MOM_FLUXFORM
46        & MOM_VECINV subroutines (to help TAF). This fixes Pb of uninitialised
47        fVer?(kUp) in admom_fluxform with non-lin free-surf or bottom control.
48    
49    checkpoint63k (2012/03/17)
50    o model/src:
51       - selectAddFluid (ALLOW_ADDFLUID): add missing term in horizontal momentum
52         flux-form (mom_fluxform.F) and vertical momentum (calc_gw.F) equations.
53       - SOLVE_DIAGONAL: switch default to use adjoinable & vectorized version
54         (#undef SOLVE_DIAGONAL_LOWMEMORY); update output of exp. front_relax.bvp.
55    o model/src: solve_*diagonal.F
56       - replace division with multiplication by inverse (similar to original version)
57         update output of AD exp. global_ocean.90x40x15.
58       - fix pkg/gmredi/gmredi_calc_psi_bvp.F & pkg/ggl90/ggl90_calc.F
59         to enable the use of the vectorized & differentiable solve_tridiagonal.F
60       - test exp. global_ocean.90x40x15/input_ad: switch to advection scheme 20 for
61         vertical advection (to get solve_tridiagonal tested in AD mode).
62    o pkg/seaice: ECCO-CLIVAR merge:
63      1. seaice AREA relaxation
64         * CPP option: SEAICE_ALLOW_AREA_RELAXATION
65         * runtime flag: SEAICE_tauAreaObsRelax
66      2. modified global mean cost imbalance code: CPP option
67          ALLOW_SSH_GLOBMEAN_COST_CONTRIBUTION
68    o another iteration on solve_*diagonal.F
69       Make choices independent of AUTODIFF
70       Default will be the adjoinable vectorized version.
71       Alternative choices are:
72       * non-adjoinable original version with low memory footprint:
73         #define SOLVE_DIAGONAL_LOWMEMORY
74       * still adjoinable but does not vectorize (k as inner-most loop):
75         #define SOLVE_DIAGONAL_KINNER (keeping SOLVE_DIAGONAL_LOWMEMORY undef)
76    o testreport
77     - add option to use a home made wrapper around "make"
78     - remove MITGCM_IEEE env. variable (no longer active)
79    o pkg/shelfice
80     - improve computation of friction velocity for velocity dependent
81       exchange coefficients: include velocities into SHELFICEBoundaryLayer
82       block to average velocities vertically
83     - add TAF store directives for SHI_ALLOW_GAMMAFRICT
84    o Modify diagonal solvers, now three versions (upon request):
85      #ifndef SOLVE_DIAGONAL_AUTODIFF
86        1. default version (dating back a while ago)
87      #else /* def SOLVE_DIAGONAL_AUTODIFF */
88      # ifdef SOLVE_DIAGONAL_KINNER
89        2. adjoinable version with k-innermost loop (G. Forget)
90      # else
91        3. adjoinable vectorized version of 2.
92      # endif
93      #endif /* SOLVE_DIAGONAL_AUTODIFF */
94      All flags are currently set within routines, but could/should be moved to CPP-options.
95      Array bounds for 1. are as before, for 2.,3. cover the entire domain
96      (could be changed for 1. too).
97    o verification/lab_sea (fwd):
98      - update the 4 fwd lab_sea test experiment: no longer SEAICE_GROWTH_LEGACY,
99        use 7 categories (except hb87), new solve4temp params (except salt_plume),
100        constant salinity (=4) or variable salinity (salt_plume) done through
101        SItracer.
102    o pkg/seaice:
103      - rename parameters: SIsalFrac to SEAICE_saltFrac & SIsal0 to SEAICE_salt0;
104      - remove old parameters ( SEAICE_freeze, SEAICEturbFluxFormula, SEAICE_gamma_t,
105         SEAICE_gamma_t_frz, SEAICE_availHeatTaper & SEAICE_availHeatFracFrz)
106        from SEAICE_PARMS.h ; still need to fix seaice_cost_sst.F (broken when
107        SEAICE_freeze got retired) but already better than previously with
108        SEAICE_freeze=123456.7 deg.C;
109      - move setting of facOpenGrow/Melt from SEAICE_INIT_FIXED to SEAICE_READPARMS
110        (safer multi-threaded setting); always set SEAICEuseEVP;
111      - setting of ocean-ice turb. flux coeff: moved from SEAICE_CHECK to
112        SEAICE_READPARMS & SEAICE_INIT_FIXED (this fixes wrong summary report);
113        stop if multiple specifications for the same coeff; make sure default
114        SEAICE_mcPheePiston is compatible with drF(1) & deltaT.
115    o pkg/obcs:
116      - allow to switch to upwind 1rst order advection scheme for the advective
117        flux computation at the open-boundary; disabled for adjoint built.
118    o pkg/ptracers:
119      - rename PTRACERS_RESTART.h -> PTRACERS_START.h
120      - rename ptracers_fields_blocking_exchanges.F -> ptracers_fields_blocking_exch.F
121      - add parameter to decide when to start a tracer; use internal flag to
122        know which tracer to step-forward; switch this internal flag at the top
123        of forward_step.F (new S/R PTRACERS_SWITCH_ONOFF); for now, not enabled
124        for adjoint built.
125    o pkg/seaice:
126      - add SEAICE_SIZE.h anywhere in the code where SEAICE.h is included ;
127      - move MULTDIM declaration and setting from SEAICE.h to SEAICE_SIZE.h ;
128      - keep experiment offline_exf_seaice truly single category (set MULTDIM=1).
129    o pkg/ecco:
130      - fix writing of output file DiagnosCost_ClimSalt/Theta
131        and DiagnosCost_DriftSalt/Theta (if multi-tiles per proc).
132    o pkg/seaice:
133      - add missing initialisation of COR_ICE array in dynsolver.F
134      - merging SEAICE_MULTICATEGORY define and undef cases. Now the same code is
135        compiled either way, and is tested in all exps (multidim was only tested
136        in lab_sea ad before).
137      - cosmetic change to prepare for future addition of ITD. no change to results.
138        no defaults change.
139      - added run time param SEAICE_multDim (7 for SEAICE_MULTICATEGORY, 1 otherwise).
140      - by lack of adequate verification experiments, I further used custom versions
141        of global_ocean.cs32x15 to test multicat or not, with pickup or not. All
142        should be correct.
143      - avoid recomputations in ad.
144    o array initialisation in adjoint mode:
145      1) pkg/mom_common/mom_calc_ke.F:
146        add full array initialisation of KE inside mom_calc_ke.F (ALLOW_AUTODIFF_TAMC):
147        The S/R which calls MOM_CALC_KE initialises KE but in some recomputation
148        part this initialisation is gone, resulting in Floating Point Exception
149        (caught by open64 compiler with debug option).
150      2) model/src/convective_weights.F
151        set output convectCount over the full array range (instead of doing
152        an update): this fix a similar issue when called within recomputation (adjoint)
153        which could by-pass the initialisation (normally done in the caller S/R).
154    o pkg/seaice:
155      - final version of turbulent flux params, as agreed at MIT ice meet:
156           SEAICE_mcPheePiston (default is ~ 0.000875)
157           SEAICE_mcPheeTaper (default is 0.)
158           SEAICE_frazilFrac (defualt is 1.)
159           SEAICE_mcPheeStepFunc (default is false)
160      - changes results at trunction error level
161      - ifdef SEAICE_EXTERNAL_FLUXES, disallow SEAICE_waterAlbedo
162    o added pkg/frazil:
163      - see frazil_description.tex for details
164      - verification experiment is global_with_exf/input.yearly; changes output.yearly.txt
165    o pkg/shelfice/shelfice_thermodynamics.F
166      - fix exponents for velocity dependent exchange coefficients: change
167        from 2/3(=0) to 0.66666666666666667
168      - move computation of velocity dependent exchange coefficients into
169        separate loop, so that it applies to both thermodynamics
170      - move some divisions by constants out of loops
171    
172    checkpoint63j (2012/02/16)
173    o pkg/seaice:
174      - overhaul of seaice_summary.F after feb 2012 clean-up of seaice_growth.F etc.
175      - SItracer:  added run time params, and allow coupling to ocn salinity.
176    o pkg/seaice: remove (almost) all divisions by constants within loops
177      in seaice_growth.F and seaice_solve4temp.F, this changes (only) the cg2d
178      results of global_ocean.cs32x15.seaice from 16 to 11 digits (but only
179      those, caused by 1/QI -> recip_QI) -> update output.seaice.txt,
180      output_adm.seaice_dynmix.txt and also lab_sea: output_adm.evp.txt
181    o pkg/seaice :
182      - simplify McPhee tapering, and allow to use it with SEAICEturbFluxFormula
183        = 1 or 2, using newly added run time parameter SEAICE_availHeatTaper.
184      - fix d_AREAbyATM, d_AREAbyOCN, d_AREAbyICE diags I broke in r1.148.
185      - add permanent SItflux diag that corresponds to TFLUX but includes
186        ice+snow. Hence SItflux-TFLUX should match the ice+snow heat budget.
187      - allow activation/testing of a fix for suspected missing term in
188        ocn-ice heat budget (to be confirmed). To test this, you want to
189        undef SEAICE_DISABLE_HEATCONSFIX, and then set the run time param
190        SEAICEheatConsFix to .TRUE. that also allows the 'SIaaflux' diagnostic.
191      - no change in results, fwd or ad.
192    o global_ocean.cs32x15/results: 3 changes following from the pkg/seaice commit below:
193      - switch to variable freezing point.
194           Results change : cg2d -> 1 digits; ad -> 3-6-6 digits.
195      - bug fix : the sublimation term that was missing is now activated.
196           Results change : cg2d -> 2 digits; ad -> 8-6-6 digits.
197      - bug fix : flooding sign term for SIsal0.NE.0.
198           Result change : cg2d -> 8 digits; ad -> 11-12-9 digits.
199    o pkg/seaice:
200      - unified freezing point treatment : the old SEAICE_VARIABLE_FREEZING_POINT
201        is now the default, and the old default constant freezing point is recovered
202        with SEAICE_tempFrz0    = -1.96,
203             SEAICE_dTempFrz_dS = 0.,
204      - retire SEAICE_freeze (= the old way of specifycing the constant freezing point)
205      - remove ALLOW_SEAICE_FLOODING brackets; run time switch is already there.
206      - bug fix (thanks to M. Losch) : the sublimation term that was missing is now
207        activated. To reproduce old results with this bug define SEAICE_DISABLE_SUBLIM.
208      - bug fix (silly me) : flooding sign term (seaice_growth.F r 1.149line 1211)
209        was wrong for SIsal0.NE.0. Changes cs32x15 results (see above item for detail).
210      - bug fix (thanks to O. Jahn) : area loss for melting  got messed up in
211        seaice_growth r149 for legacy branch (no results change).
212      - introduce SEAICE_CAP_SUBLIM : caps sublimation heat flux in solve4temp (code
213        from I. Fenty).
214      - results did not change except for global_ocean.cs32x15, mostly due to the
215        switch to variable freezing point (see above item for detail).
216    o pkg/thsice:
217      - fix and simplify interface to salt_plume pkg ; diagnose directly amount of
218        seawater freezing in thsice_calc_thickn (not used).
219    o pkg/seaice: turbulent flux term specification via run time params.
220      - replace CPP switches with run time switches to facilitate testing
221      - retired CPPs : MCPHEE_OCEAN_ICE_HEAT_FLUX,
222                       GRADIENT_MIXED_LAYER_TURBULENCE_FACTOR
223      - added runtime parameter : SEAICEturbFluxFormula
224      - move Mcphee constants to SEAICE_PARAMS.h
225      - seaice_readparms.F : read turbulent flux term params (SEAICEturbFluxFormula;
226                 SEAICE_availHeatFrac/Frz, or SEAICE_gamma_t/_frz if apply);
227                 remove seaice_summary call (moved to seaice_init_fixed)
228      - seaice_init_fixed.F : set SEAICE_availHeatFrac/Frz depending on
229        SEAICEturbFluxFormula, and seaice_summary call (moved from seaice_readparms)
230      - seaice_summary.F : add missing report of read turbulent flux term set up
231                           and SITRACER.
232      - seaice_check.F : check range; inform and stop if retired CPPs are used
233                         (incl. SEAICE_AGE).
234      - seaice_growth.F : unified use of SEAICE_availHeatFrac/Frz, without
235             CPP switch, same computation as before for the different options.
236      - change results at the truncation level.
237    o pkg/seaice:
238      - remove un-used parameters LAD & MAX_TICE ; add new run-time parameters:
239        useMaykutSatVapPoly (default=F), postSolvTempIter (default=2) and
240        SEAICE_wetAlbTemp (default=-1e-3). Remove option SEAICE_SOLVE4TEMP_LEGACY.
241      - update verification/*/input*/data.seaice:
242        to reproduce previous results with former #defined SEAICE_SOLVE4TEMP_LEGACY
243        code, set useMaykutSatVapPoly=T & postSolvTempIter=0 ;
244        and to reproduce previous results with former non-SOLVE4TEMP_LEGACY code,
245        set SEAICE_wetAlbTemp=0 & SEAICE_snowThick=0.
246    o pkg/seaice/seaice_solve4temp.F (SOLVE4TEMP_LEGACY):
247      - remove LEGACY code for solving for tsurf (A1,A2,A3) but maintain the same
248        algorithm (same choice: useMaykutPolySatVap=T, postSolvTempIter=0);
249        difference in results only due to machine truncation.
250      - remove MAX_TICE (tsurf is always =< TMELT anyway); keep MIN_TICE if using
251        MaykutPolySatVap; keep MIN_LWDOWN.
252      - adapt SEAICE_MODIFY_GROWTH_ADJ code (untested) to non-legacy formulation.
253      - update output of verification exp. lab_sea (4 fwd: 11 cg2d digits except hb87,
254        + 3 AD: 6 digits except evp) and offline_exf_seaice.seaice (12 digits).
255    o pkg/salt_plume:
256      - isolate saltPlumeFlux array exch into a specific S/R called from
257        do_oceanic_phys.F
258      - add interface to pkg/salt_plume (filling of saltPlumeFlux) in pkg/thsice.
259    o verification:
260      - move untested set-up to MITgcm_contrib/verification_other.
261    o pkg/seaice:
262      - retire old way of SEAICE_AGE. Now replaced with ALLOW_SITRACER.
263    o pkg/seaice:
264      - seaice_solve4temp.F (keeping results unchanged):
265        * add 2 future run-time params to select which saturation vapor pressure
266          formula is used and how post-iteration fluxes are set.
267          Temporary set these 2 params according to option SOLVE4TEMP_LEGACY;
268        * New piece of code (not used) to update surf. atmos. heat flux F_ia using
269          the linearized expression to stay consistent with tsurf finding.
270      - seaice_freedrift.F avoid floating exception in sqrt(y) since y=sqrt(x*x)-x
271        can be < 0.
272    o pkg/seaice/seaice_solve4temp.F (SOLVE4TEMP_LEGACY undef):
273      - remove from F_ia (and from it's derivative dFiDTs1) the contribution of
274        conductive heat flux F_c , and add it explicitly when updating tsurf as
275        solution of: Fc = Fia + d/dT(Fia - Fc) *delta.tsurf
276        so that now F_ia has a consistent meaning through the entire routine.
277        This causes differences at truncation level: update output of fwd exp.
278        global_ocean.cs32x15.seaice.
279    o pkg/seaice:
280      - lots of editing/cleaning in seaice_solve4temp.F + better documentation
281        of arrays, sign/direction of fluxes; no effect on results.
282      - replace hard coded 273.16 (=previous value of celsius2K) by celsius2K
283        in seaice_budget_ocean.F & seaice_solve4temp.F (SOLVE4TEMP_LEGACY part);
284        note: this should have been done before changing celsius2K default.
285      - to keep results unchanged, add back old value of celsius2K in verification
286        exp. input*/data : lab_sea (AD), offline_exf_seaice (fwd+AD) & seaice_obcs
287      - replace hard coded seawater freezing temp in seaice_solve4temp.F (part
288        SOLVE4TEMP_LEGACY) of 271.20 (=previous value of celsius2K + default
289        value of SEAICE_freeze) by celsius2K+SEAICE_freeze so that seawater
290        freezing temp is consistent with value in seaice_growth.F ; this causes
291        differences at machine truncation level: update lab_sea AD output (3/4).
292    o pkg/seaice:
293      - mask (in exf_init_fixed.F) atemp,aqh,evap,precip,runoff,lwflx,areamask
294        and climsst/sss even when using seaice (to prevent calculation that might
295        use SST on land); does not affect any verification exp.
296      - apply mask to taux,tauy (in seaice_get_dynforcing.F); update output
297        of lab_sea.fd & lab_sea.hb87 and global_ocean.cs32x15.seaice_dynmix.
298    o pkg/seaice/seaice_growth.F: add mask to avoid non-zero ice thickness
299      over land (non-legacy code)
300    o vectorize salt_plume package:
301      - add extra code to salt_plume_frac and salt_plume_tendency_apply_s
302      - this code computes plumebk everywhere (also over land), thus requires
303        code to avoid divisions by zero and catch the case of kLev=Nr.
304      - efficiency of salt_plume_frac is still sub-optimal
305    o tools (genmake2):
306      - fix makefile NAME specification (option: -makefile NAME) by adding
307        "-f $MAKEFILE" in few places where it was missing including makedepend
308        command (contribution from Paul).
309    
310    checkpoint63i (2012/01/24)
311    o model/src:
312      - add factorized versions of some EOS code to find_rho.F,
313        define USE_FACTORIZED_EOS to turn it on (default for TARGET_NEC_SX)
314    o model/src:
315      - add celsius2K to namelist PARM01; remove unused recip_rhoNil from PARAMS.h;
316      - change default celsius2K from 273.16 to 273.15
317      - to keep results unchanged, add back old value of celsius2K in verification
318        exp. input*/data : aim.5l_cs, 1D_ocean_ice_column, lab_sea (fwd),
319         global_ocean.cs32x15(seaice) & cpl_aim+ocn(input_atm).
320    o model/src: add a little initialisation trick to find_rho.F and find_alpha.F
321      to make TAF generate vectorizable code
322    o pkg/seaice/seaice_evp.F: add code (copied from CICE) that avoids underflows.
323       Turn on by defining SEAICE_EVP_ELIMINATE_UNDERFLOWS. Most compilers
324       have flags that do this more efficiently.
325    o pkg/diagnostics/diagstats_calc.F
326      - for TARGET_NEC_SX fix the treatment of the scaling factor tmpFac=scaleFact
327    o pkg/obcs (with exch2):
328      - derive OB indices in overlap region from OB-InsideMask (in obcs_init_fixed.F)
329        and remove code (in obcs_readparms.F) which was based on EXCH of indices
330        (through buffer) and did not account for exch2 (e.g., CS-grid) topology.
331    o pkg/exf and seaice exp:
332      - change offline_exf_seaice.seaicetd test exp. to use default DIFF1 value (=0)
333        so that switching off area & heff advection flags does not affect results.
334      - change default EXF_LWDOWN_WITH_EMISSIVITY to #define in EXF_OPTIONS.h
335      - keep exp. seaice_obcs & 1D_ocean_ice_column(ad) unchanged (using #undef
336        EXF_LWDOWN_WITH_EMISSIVITY) and, using pkg/exf default emissivities, update
337        results of verification experiments: 1D_ocean_ice_column(fwd),
338        global_ocean.cs32x15.seaice(fwd+ad) & seaice_dynmix(ad), lab_sea (all 8)
339        and offline_exf_seaice (all 4).
340    o pkg/seaice:
341      - remove array YNEG, RIVER, TMIX (replaced by local var) from common block;
342        remove also areaNm1 & hEffNm1 when SEAICE_GROWTH_LEGACY is undef.
343      - fix bug: areaNm1 & hEffNm1 are needed in seaice_growth (SEAICE_GROWTH_LEGACY)
344        but were not filled when resp. SEAICEadvArea=F & SEAICEadvHeff=F and
345        not multi-dim advection;
346      - fix seaice_growth.F to compile with both SEAICE_GROWTH_LEGACY and
347        SHORTWAVE_HEATING #undef.
348    o optim: make Makefile more robust (?)
349    o pkg/obcs:
350      * fix treatment of obcs_read_pickup for TAF
351    o pkg/shelfice:
352      * add missing initialisation of num_shifwflx
353      * new adjoint verification exp. for isomip
354      * change Prandtl and Schmidt numbers from generic formulations
355        (in terms of model diffus. and visc.) to separate runtime
356        parameters, with Holland and Jenkins (1999) default values.
357    o pkg/exf (interpolation):
358      - extended input field (2 rows) near the N & S poles:
359        * fill in with the symetric value (when even Nb of data in longitude)
360        * add average value at the poles only for scalar quantities ; for vector
361          component interpolation, skip the averaging and keep duplicated values,
362          unless the 2 components have same location (uvInterp=T) in which case
363          interpolate the 2 components together using S/R EXF_INTERP_UV.
364      - new S/R EXF_INTERP_UV to interpolate the 2 components of a vector field
365        together: this allows to account properly for local orientation when
366        averaging at N & S pole.
367      - add CPP option EXF_USE_OLD_INTERP_POLE to recover old results regarding
368        exf-interpolation near N & S poles. Undef by default.
369      - add debug check/print on 1rst iter if debugLevel >=2.
370    o pkg/exf:
371      - change masking flags definition (no longer "parameter"), put them in
372        common block and set them in S/R EXF_INIT_FIXED.
373      - change recognized masking flag from s,u,v to c,w,s since the mask
374        to use (maskC,W,S) depends on position on model grid and has little to
375        do with scalar/vector difference; fix masking if using P-coordinates.
376      - fix masking of wind-stress (was wrong if interpolated or read on A-grid)
377        and update results of exp. global_with_exf (x2).
378      - fix setting of zenith-angle table when SHORTWAVE_HEATING is undef.
379    o pkg/obcs
380      - S/R obcs_calc_stevens: fix a small bug (gammat -> gammas where appropriate)
381    o pkg/exf (interpolation):
382      - assume periodicity in X only if input field cover full longitude range.
383      - improve search for lat. index (supposed to be faster, in ~log2(ny) steps,
384        and should vectorise).
385      - fix input lat of the 2 added row (in case we provide N.pole data).
386    
387    checkpoint63h (2011/12/30)
388    o pkg/seaice:
389      - change declaration of UVM from _RL to _RS in order to get B-grid
390        uIce,vIce monitor when _RS = real*4
391    o pkg/offline:
392      - new S/R OFFLINE_RESET_PARMS for resetting main-model params (switch off flags);
393      - compute vertical velocity if not read from file (switch on exactConserv
394        & staggerTimeStep);
395      - fix output of ptracer monitor iter & time for default PTRACERS_monitorFreq.
396    o verification:
397      - update grid-files (in tutorial_held_suarez_cs/input and fizhi-cs-32x32x40/input)
398        with grid-angle generated using "utils/matlab/cs_grid/cubeCalcAngle.m":
399        fix Pb in yG definition @ 2 missing corners (previously yG was averaged);
400      - update output of exp. global_ocean.cs32x15.viscA4 after changing
401        grid-file angles (used here for coriolis-3d);
402      - remove (or gzip) few files not needed to run fizhi-cs experiments.
403    o pkg/exf (vector interpolation):
404      - rotate vector component toward local grid-axis orientation using grid-angles
405        (stored in GRID.h) instead of locally computed rotation angle; keep old code
406        available with exf option EXF_USE_OLD_VEC_ROTATION (undef by default).
407    o pkg/seaice:
408      - allow to compile with exf options ALLOW_ATM_TEMP or ALLOW_DOWNWARD_RADIATION
409        undefined. Fix and remove the stop when ALLOW_RUNOFF is undefined.
410    o pkg/PKG_OPTIONS.h files:
411      - move #include "CPP_OPTIONS.h" just after #include "PACKAGES_CONFIG.h",
412        outside of the #ifdef ALLOW_THISPKG / #endif block.
413      - update verification/*/code/PKG_OPTIONS.h files.
414    o add a verification experiment (offline_exf_seaice/input.seaice) that test
415      the B-grid LSOR solver
416    o pkg/seaice: sort out emissivity and long wave radiation step 2:
417      - add emissivity for snow and ice as new run-time parameters
418        (unfortunately) that default to the corresponding exf values; this
419        changes results in most verification experiments so that for backward
420        compatibility these parameter have to be set explicitly to inconsistent
421        values (ugly);
422      - the exf-flag EXF_LWDOWN_WITH_EMISSIVITY then gets rid off the hard-wired
423        emissivities of 0.97 associated with lwdownloc in S/R seaice_solve4temp
424        until we agree how to handle this bug properly
425    o pkg/exf (interpolation):
426      - add a set of run-time param ({inputfield}_interpMethod), one for
427        each interpolated input field, to select the interpolation method
428        with a value of zero switching off the interpolation;
429      - print interpolation parameters to standard output;
430      - refine exf_check.F accordingly ; stop if USE_NO_INTERP_RUNOFF is defined
431        (to use instead runoff_interpMethod=0 in data.exf).
432      - simplify default setting of interpolation parameters (for all fields,
433        set position to match model grid cell-center position, leading to trivial
434        interpolation in case of regular Lat-Lon grid) and fix for the case of
435        non-uniform delY.
436    o pkg/exf/exf_radiation.F: add the factor ocean_emissivity to lwdown, for
437       within #ifdef EXF_LWDOWN_WITH_EMISSIVITY/#endif. Unless ocean_emissivity=1.
438       this factor is absolutely required, because the lw exitance (= out-going
439       long wave radiation) is emissivity*stefanBoltzmann*T^4 + rho*lwdown,
440       where the reflectivity rho = 1-emissivity for conservation reasons. Once
441       this is established, we can remove the CPP-Flag (if we want to).
442    o pkg/seaice:
443      - qualify a stop statement in S/R seaice_check: EXF_READ_EVAP and
444        ALLOW_BULKFORMULAE are only required if SEAICE_EXTERNAL_FLUXES is defined
445      - sort out emissivity and long wave radiation, step 1: make SEAICE_emissivity
446        what the name implies (and not emissivity*BoltzmannConstant), this means
447        the old default value of 5.5e-8 now means
448        5.5e-8/5.670e-8 = 0.97001763668430343479 as ocean_emissivity in
449        S/R exf_readparms
450      - FV-discretization of the B-grid LSOR solver, turn on with
451        SEAICE_LSRBNEW. This new solver also involves a slight re-organization
452        of the calling routine dynsolver, so that B and C-grid code look a
453        little more alike.
454      - fix index bugs in ostres.F (B-grid code)
455    o pkg/seaice/seaice_ocean_budget.F: change (unused) code to make it look better
456    o pkg/seaice/seaice_readparms.F: make ocean_emissivity*stefanBoltzmann the
457      default for SEAICE_emissivity, if useEXF; requires setting a wrong
458      parameter value in global_ocean.cs32x15/input.seaice/data.seaice for
459      backward compatiblity
460    o model/src: use sigmaR in calc_ivdc
461    
462    checkpoint63g (2011/12/16)
463    o pkg/seaice/seaice_growth.F:
464      fix heat conservation of the coupled ocean-seaice system.
465      when SEAICE_HEAT_CONSERV_FIX is defined, the mismatch of
466      solid vs liquid water treatment is resolved via QNET.
467    o pkg/seaice/seaice_growth.F:
468      add missing term for sublimation in saltFlux, which was breaking conservation.
469    o pkg/seaice/seaice_model.F:
470      Remove this patholigical case treatment in evolution branch,
471      where it is un-necessary and breaks conservation.
472      Update global_ocean.cs32x15/results accordingly for
473      output.seaice.txt output_adm.seaice.txt and output_adm.seaice_dynmix.txt
474    o model/src:
475      useRealFreshWaterFlux: remove masking of EmPmP (using maskInC) in
476      external_forcing_surf.F and apply mask directly in S/R SOLVE_FOR_PRESSURE.
477    o pkg/obcs:
478      modify Stevens boundary conditions so that S/R obcs_calc_stevens computes
479      tendency for temperature and salinity that is then applied to update
480      theta and salt in S/R obcs_apply_ts; this requires proper masking of all
481      horizontal advection and diffusion contributions on the boundary (in
482      S/Rs gad_advection, gad_calc_rhs, gmredi_rtransport, gmredi_calc_diff), and
483      removing the mask in S/R timestep_tracer. The advantage of this approach is
484      that the updated tracer values include contributions from the surface
485      forcing and vertical diffusion.
486      This modification changes exp4.stevens because of vertical diffusion.
487    o model/src:
488      change non-curvilinear grid setting to also work with exch2 + blank tiles:
489      - move delX,delY to new header file (SET_GRID.h) and adjust length to 1rst
490        face dimensions.
491      - new S/R INI_LOCAL_GRID to define model tile-local grid (using same units
492        as delX,delY) and called from S/R INI_CARTESIAN_GRID, INI_CYLINDER_GRID
493        and INI_SPHERICAL_POLAR_GRID.
494      change test-experiment global_ocean.90x40x15:
495      - split the domain in many more tiles (9x4 tiles of 10x10 each);
496      - switch to exch2 and remove 1 blank-tile (but only for MPI test).
497      - update results of both test (std & dwnslp).
498    o pkg/diagnostics/diagstat_calc.F: fix problem with non-initialised halos in
499       tmp-fields for TARGET_NEC_SX at the cost of extra loops and less vectorisation
500    o model/src:
501      - take sigma-coords related code out of update_etah.F into new S/R UPDATE_ETAWS
502        and fix initialisation when using sigma-coords.
503    o model/src:
504     - improve Gael's changes from Jan 14, 2011 "addition of an 'update' of hfacc etc.
505       to their current value at the beginning of forward_step.F": add a new run-time
506       switch "doResetHFactors" (default=false) and use it to do (or not) the resetting.
507     - set doResetHFactors=T in the following test exp:
508        global_ocean.90x40x15/input (rStar) & input.dwnslp (linFS),
509        global_ocean.cs32x15/input.seaice (rStar), hs94.cs-32x32x5/input.impIGW (linFS)
510        and tutorial_global_oce_in_p (nonLinFS in p)
511    o pkg/ecco
512      - added IES cost term
513    o verification/advect_xz
514      - scale down the depth by 1/100 (from 200 km to just 2.km)
515      - add secondary test using divergent flow, r-star and implicit vertical advection.
516      - add note (check_conserve_TS.txt) and matlab script to check global
517        conservation of T & S with NonLin-FreeSurf and Adams-Bashforth.
518    o pkg/rbcs:
519      - add missing relaxUFile & relaxVFile in namelist (in rbcs_readparms.F).
520    o pkg/obcs (Stevens BCs):
521      - fix various problems in the phase speed computations of the Stevens
522        boundary conditions:
523        - sign error for western and southern boundaries,
524        - time tendencies were underestimated by factor of dTracerLev and some just
525          zero (for multidim advection schemes) -> now estimate time tendencies
526          from difference between previous (n) time level and the one before (n-1);
527          this requires storing a field per tracer per boundary, also in the pickup
528          files.
529        - replace deltaTmom in cflMer/Zon computation with dTracerLev
530        - set default phase velocity to cflMer/Zon
531      - update verification experiment exp4.stevens
532    o pkg/generic_advdiff (implicit_r):
533      - fix implicit vertical advection conservation with AB and/or NonLin-FreeSurf
534        (remove Tr*d/dz(w) in gad_implicit_r.F and add it in gad_calc_rhs.F);
535      - fix implicit vertical diffusion or advection with NonLin FreeSurf
536        (was using current recip_hFacC instead of future recip_hFacC): set future
537        recip_hFac in thermodynamics.F and pass & use it in all vertical implicit
538        solver S/R ;
539      - fill diagnostics of vertical advective fluxes (computed from tendency)
540        when using implicit vert. advection;
541      - update output of exp that uses NonLin-FreeSurf & implicit vertical diffusion:
542         global_ocean.90x40x15 (fwd+AD), global_ocean.cs32x15 (4 fwd +4 AD),
543         tutorial_global_oce_in_p (fwd), tutorial_tracer_adjsens (AD)
544         and cpl_aim+ocn (used in ocean); to be fixed: bottom_ctrl_5x5.
545    o pkg/diagnostics:
546      - add diags for T & S tendency which goes through Adams-Bashforth.
547    
548    checkpoint63f (2011/11/30)
549    o pkg/obcs/obcs_calc_stevens.F:
550      - join some loops to reduce number of if-statements
551      - fix a bug in code for northern and southern boundaries.
552    o pkg/seaice/seaice_init_varia.F
553      - undo resetting UVM=0 that has slipped in unnoticed in r1.49 and
554        caused zero ice-velocities for the B-grid code
555    o pkg/seaice/seaice_init_fixed.F
556      - fix a bug in the initialisation of the second metric terms
557        k2AtC and k2AtZ: k2AtC was set to the value of k2AtZ and k2AtZ was 0.
558      - this affects all seaice configurations with useCurviLinearGrid = .true.
559        and SEAICEuseDynamics = .true. (default) and SEAICEuseMetricTerms
560        = .true. (default)
561      - the only verification experiment affected is global_ocean.cs32x15:
562        icedyn, seaice, and seaice_dynmix (AD)
563    o pkg/thsice/thsice_diagnostics_state.F
564      - only for TARGET_NEC_SX: initialise all of tmpFld, so that overlap does
565        not contain garbage that can lead to surprises in diagstats_calc.F
566    o model/src:
567      - move bi,bj loops inside INTEGR_CONTINUITY ;
568      - call INTEGR_CONTINUITY directly from forward_step.F
569        (previously called from momentum_correction_step.F)
570      - call UPDATE_ETAH from integr_continuity.F and update initialise_varia.F,
571        forward_step.F and pkg/ecco/the_main_loop.F
572    o model/src/do_oceanic_phys.F:
573      - reset addMass to zero only if useICEFRONT ;
574      - separated k-loop for rhoInSitu calculation ;
575      - add 2 diagnostics for wVel*delta^k(Rho) at constant pressure (= WdRHO_P)
576        and at constant T,S (= WdRHOdP);
577      NOTE: change diagnostics WRHOMASS : this is now simply the Vertical transport
578        of In-Situ Density (Anomaly) (=wVel*rho^bar-k) (previously was Vertical
579        transport of locally-referenced potential density);
580        to recover old diag: (WRHOMASS)_old = (WRHOMASS)_new -1/2 * (WdRHOdP)
581    o gluemnc:
582      - replace ncrcat with ncks when adding variables to *.glob.nc
583      - change the way variables without record dimensions are handled so that
584        files that have variables with and without record variables can be glued:
585        add a record dimension with a new unique name to be able to differentiate
586        between variable with and without a-prior record dimensions. Remove
587        this record dimension before adding the variable to the *.glob.nc file.
588        This procedure automatically works also for grid.*.nc files that do not
589        have any record dimension.
590    o verification/cpl_aim+ocn:
591      - generate new reference output on baudelaire (gfortran, mpich2) (previously
592        from old aces-grid cluster, ao + ifort) and update 'run_cpl_test' script.
593    o pkg/obcs/obcs_calc_stevens.F:
594      - add code for northern and southern boundaries.
595      - reorder some loops to save some operations and so that drFBar can be scalar
596    o model/src:
597      - re-arrange extrapolation calculation in Adams-Bashforth S/R (affects machine
598        truncation) and add diagnostics for Adams-Bashforth tendency increment.
599      - update test-exp. AD output:
600        1D_ocean_ice_column, bottom_ctrl_5x5, lab_sea.noseaicedyn, obcs_ctrl;
601      and FWD output: exp4 (x3), fizhi-cs-32x32x40, fizhi-cs-aqualev20,
602        front_relax (x3), global_ocean.90x40x15 (x2), global_ocean.cs32x15 (x5),
603        global_ocean_ebm, ideal_2D_oce, internal_wave, isomip (x3), lab_sea (x4),
604        matrix_example, MLAdjust (x5), natl_box (x2), tutorial_advection_in_gyre,
605        tutorial_global_oce_in_p, tutorial_global_oce_latlon and
606        tutorial_plume_on_slope.
607    o pkg/diagnostics/diagstats_calc.F: add special code for TARGET_NEC_SX
608      that vectorises. This code uses 3 extra 2D fields, F90 array assignments
609      and F90 intrinsic routines SUM, MINVAL, MAXVAL, but since TARGET_NEC_SX
610      does not even come with an F77 compiler anymore, this should not be
611      a limitation
612    
613    checkpoint63e (2011/11/06)
614    o pkg/seaice adjoint of LSR:
615      - substantially rework STORE dirs.
616      - add new flag SEAICE_LSR_ADJOINT_ITER and parameter SOLV_MAX_FIXED
617        this flag will do SOLV_MAX_ITERS but only store SOLV_MAX_FIXED fields
618        and only perform SOLV_MAX_FIXED adjoint iters.
619        If flag SEAICE_LSR_ADJOINT_ITER is undef-ined, the store in the iteration
620        always goes to same record, meaning that the last forward field will be
621        the one used in the adjoint - an approximation.
622      - now produces non-zero LSR-related gradients, and acceptable gradients for
623        An's zonal (x-z) test case (to be checked in)
624      - lab_sea: produces acceptable gradients for lab_sea with forward/backward LSR
625        (but these are screwed up by the thermodynamics in the first place);
626        reduce from 4 to 3 timesteps to avoid t.d. issue as temporary solution;
627        output_adm.txt also reflects changes to seaice_lsr
628      - global_ocean.cs32x15:
629        * the "default" input_ad.seaice has been re-defined to always exclude dynamics
630          (output_adm.seaice.txt was updated)
631        * new input_ad.seaice_dynmix tests a forward LSR / backward free-drift
632          (output_adm.seaice_dynmix.txt)
633    o test-exp. exp4+stevens:
634      - switch off pTracers and nonHydrostatic (restart problems with NH); update output
635    o pkg/seaice (lsr solver):
636      - put coriolis term into FORCEX,Y (as in seaice_evp.F; previously in rhsU,V only);
637        update output (change truncation) of FWD test exp lab_sea & global_ocean.cs32x15
638      - fix SEAICEuseFREEDRIFT for new OBCS version (ndef OBCS_UVICE_OLD)
639      - new parameter "LSR_mixIniGuess" allows (if=2,4) to mix free-drift solution
640        into initial guess for linearised solver; use weight ~ (1/err)^2,4.
641      - compute (with new S/R) and print initial (+ free-driff sol. if available)
642        and final residual of linearised system.
643    o pkg/pp81: add diagnostics for vertical eddy viscosity and diffusivity
644      (requires new subroutines pp81_init_fixed.F/pp81_diagnostics_init.F)
645    o pkg/obcs: Stevens BCs (still only for east and west)
646      - fix Stevens BCs by using intermediate velocities of previous
647        time step as "baroclinic" contribution rather velocity of one grid cell
648        inside the boundaries; more consistent but makes the entire treatment
649        more complicated, requires new pickup files and two new S/Rs:
650        obcs_copy_uv_n and obcs_save_uv_n
651        keep old version with flag OBCS_STEVENS_USE_INTERIOR_VELOCITY
652        (undefined by default)
653      - silently move computation of some grid factors into separate loops to
654        save some recomputations
655      - add a hack for non-linear free surface
656      - add a verification experiment to exp4 that tests this code
657    o make gluemnc/xplodemnc work with (moron) non-GNU shell tools
658    
659    checkpoint63d (2011/10/25)
660    o pkg/obcs + seaice-dynamics:
661      - new implementation calls OBCS_APPLY_UVICE (in seaice_dynsolver.F) before
662        solving for uIce,vIce and prevent SEAICE_LSR or SEAICE_EVP to modify OB
663        values (consistent with an implicit method).
664      - add option OBCS_UVICE_OLD (in OBCS_OPTIONS.h, defined by default) to
665        return to older implementation (same results as before); note that none of
666        the "experimental" OBCS_SEAICE options are implemented in the new version.
667      - switch test exp. seaice_obcs to use new version (update output).
668    o pkg/seaice:
669      - add few stop (B-grid & CS-exch, B-grid & obcs, AUTODIFF & SEAICE_maskRHS)
670      - add parenthesis in Water-Ice drag calculations (evp & lsr);
671      - in seaice_lsr.F, simplify and fix AA3 setting in case sNx or sNy=1;
672        and fix case SEAICE_waterDrag=0 (but unstable if no or little seaice)
673      - update output of test exp lab_sea that uses evp or lsr (fwd+ad)
674        and global_ocean.cs32x15 (icedyn & seaice fwd+ad).
675    o pkg/layers:
676      - Include potential density as new coordinate (Thanks to David Munday)
677    o pkg/dic:
678      - Remove subroutine CALC_PCO2_APPROX_CO3 from carbon_chem.F and add
679        carbonate computation/output to CALC_PCO2_APPROX
680    o pkg/generic_advdiff
681      - make TAF generate code that vectorizes:
682        gad_dst3fl_adv_*.F, gad_u3c4_impl_r.F
683    o model/src:
684      - improve vectorization also for adjoint code of
685        solve_tridiagonal and solve_pentadiagonal. As this requires up to
686        5 new 3D-fields, this code is only turned on for the combination of
687        ALLOW_AUTODIFF_TAMC and TARGET_NEC_SX. Also remove error message
688        for singular matrix check (only for TARGET_NEC_SX).
689      - remove hard-wiring of CPP-flag ALLOW_SOLVERS_KLOOPINSIDE to
690        ALLOW_AUTODIFF. This flag now needs to be set outside of
691        solve_tri/pentadiagonal.F
692    o pkg/exf:
693      - fix previous modif in exf_readparms.F (revision 1.66: treatment of
694        optional namelist EXF_NML_OBCS).
695      - add many debug-print (to trace down where pkg/cal error msg comes from)
696    o pkg/mom_vecinv/mom_vi_hdissip.F
697      - rearrange loops so that vectorization is improved and in particular
698        the adjoint routine vectorizes. The code is a little longer now, but I
699        think easier to read.
700        Note: CPP-flag MOM_VI_ORIGINAL_VISCA4 is not tested.
701    o pkg/seaice:
702      - allow to specify initial seaice velocity from files (uIceFile,vIceFile)
703    o pkg/exch2:
704      - alternative code (without tile x tile matrix) for cumulated (global) sum;
705        used as default; keep using matrix version in adjustment.cs-32x32x1.
706    o tools/build_options:
707      - after merging some MPI and/or multi-threads specific optfiles so that
708        the modified default optfile support both built (using genmake2 -mpi
709        for the MPI built, using genmake2 -omp for OpenMP built),
710        move now obsolete optfiles to tools/build_options/unsupported/
711       (add copy of email sent to support list in doc/optfiles_changes.txt)
712    
713    checkpoint63c (2011/09/28)
714    o pkg/ebm:
715      - fix ebm_zonalmean.F for several procs in Ydir (nPy > 1); update output of
716        test exp. global_ocean_ebm (affects machine truncation, 12 digits for cg2d)
717  o pkg/seaice (SItracer pickup)  o pkg/seaice (SItracer pickup)
718  * Simple code for pickup of SItracer fields (#define ALLOW_SITRACER)  * Simple code for pickup of SItracer fields (#define ALLOW_SITRACER)
719    To be done:    To be done:

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