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revision 1.1521 by mlosch, Tue Oct 25 15:24:54 2011 UTC revision 1.1603 by dimitri, Fri Mar 2 01:45:22 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 added pkg/frazil - see frazil_description.tex for details
8    o pkg/shelfice/shelfice_thermodynamics.F
9      - fix exponents for velocity dependent exchange coefficients: change
10        from 2/3(=0) to 0.66666666666666667
11      - move computation of velocity dependent exchange coefficients into
12        separate loop, so that it applies to both thermodynamics
13      - move some divisions by constants out of loops
14    
15    checkpoint63j (2012/02/16)
16    o pkg/seaice:
17      - overhaul of seaice_summary.F after feb 2012 clean-up of seaice_growth.F etc.
18      - SItracer:  added run time params, and allow coupling to ocn salinity.
19    o pkg/seaice: remove (almost) all divisions by constants within loops
20      in seaice_growth.F and seaice_solve4temp.F, this changes (only) the cg2d
21      results of global_ocean.cs32x15.seaice from 16 to 11 digits (but only
22      those, caused by 1/QI -> recip_QI) -> update output.seaice.txt,
23      output_adm.seaice_dynmix.txt and also lab_sea: output_adm.evp.txt
24    o pkg/seaice :
25      - simplify McPhee tapering, and allow to use it with SEAICEturbFluxFormula
26        = 1 or 2, using newly added run time parameter SEAICE_availHeatTaper.
27      - fix d_AREAbyATM, d_AREAbyOCN, d_AREAbyICE diags I broke in r1.148.
28      - add permanent SItflux diag that corresponds to TFLUX but includes
29        ice+snow. Hence SItflux-TFLUX should match the ice+snow heat budget.
30      - allow activation/testing of a fix for suspected missing term in
31        ocn-ice heat budget (to be confirmed). To test this, you want to
32        undef SEAICE_DISABLE_HEATCONSFIX, and then set the run time param
33        SEAICEheatConsFix to .TRUE. that also allows the 'SIaaflux' diagnostic.
34      - no change in results, fwd or ad.
35    o global_ocean.cs32x15/results: 3 changes following from the pkg/seaice commit below:
36      - switch to variable freezing point.
37           Results change : cg2d -> 1 digits; ad -> 3-6-6 digits.
38      - bug fix : the sublimation term that was missing is now activated.
39           Results change : cg2d -> 2 digits; ad -> 8-6-6 digits.
40      - bug fix : flooding sign term for SIsal0.NE.0.
41           Result change : cg2d -> 8 digits; ad -> 11-12-9 digits.
42    o pkg/seaice:
43      - unified freezing point treatment : the old SEAICE_VARIABLE_FREEZING_POINT
44        is now the default, and the old default constant freezing point is recovered
45        with SEAICE_tempFrz0    = -1.96,
46             SEAICE_dTempFrz_dS = 0.,
47      - retire SEAICE_freeze (= the old way of specifycing the constant freezing point)
48      - remove ALLOW_SEAICE_FLOODING brackets; run time switch is already there.
49      - bug fix (thanks to M. Losch) : the sublimation term that was missing is now
50        activated. To reproduce old results with this bug define SEAICE_DISABLE_SUBLIM.
51      - bug fix (silly me) : flooding sign term (seaice_growth.F r 1.149line 1211)
52        was wrong for SIsal0.NE.0. Changes cs32x15 results (see above item for detail).
53      - bug fix (thanks to O. Jahn) : area loss for melting  got messed up in
54        seaice_growth r149 for legacy branch (no results change).
55      - introduce SEAICE_CAP_SUBLIM : caps sublimation heat flux in solve4temp (code
56        from I. Fenty).
57      - results did not change except for global_ocean.cs32x15, mostly due to the
58        switch to variable freezing point (see above item for detail).
59    o pkg/thsice:
60      - fix and simplify interface to salt_plume pkg ; diagnose directly amount of
61        seawater freezing in thsice_calc_thickn (not used).
62    o pkg/seaice: turbulent flux term specification via run time params.
63      - replace CPP switches with run time switches to facilitate testing
64      - retired CPPs : MCPHEE_OCEAN_ICE_HEAT_FLUX,
65                       GRADIENT_MIXED_LAYER_TURBULENCE_FACTOR
66      - added runtime parameter : SEAICEturbFluxFormula
67      - move Mcphee constants to SEAICE_PARAMS.h
68      - seaice_readparms.F : read turbulent flux term params (SEAICEturbFluxFormula;
69                 SEAICE_availHeatFrac/Frz, or SEAICE_gamma_t/_frz if apply);
70                 remove seaice_summary call (moved to seaice_init_fixed)
71      - seaice_init_fixed.F : set SEAICE_availHeatFrac/Frz depending on
72        SEAICEturbFluxFormula, and seaice_summary call (moved from seaice_readparms)
73      - seaice_summary.F : add missing report of read turbulent flux term set up
74                           and SITRACER.
75      - seaice_check.F : check range; inform and stop if retired CPPs are used
76                         (incl. SEAICE_AGE).
77      - seaice_growth.F : unified use of SEAICE_availHeatFrac/Frz, without
78             CPP switch, same computation as before for the different options.
79      - change results at the truncation level.
80    o pkg/seaice:
81      - remove un-used parameters LAD & MAX_TICE ; add new run-time parameters:
82        useMaykutSatVapPoly (default=F), postSolvTempIter (default=2) and
83        SEAICE_wetAlbTemp (default=-1e-3). Remove option SEAICE_SOLVE4TEMP_LEGACY.
84      - update verification/*/input*/data.seaice:
85        to reproduce previous results with former #defined SEAICE_SOLVE4TEMP_LEGACY
86        code, set useMaykutSatVapPoly=T & postSolvTempIter=0 ;
87        and to reproduce previous results with former non-SOLVE4TEMP_LEGACY code,
88        set SEAICE_wetAlbTemp=0 & SEAICE_snowThick=0.
89    o pkg/seaice/seaice_solve4temp.F (SOLVE4TEMP_LEGACY):
90      - remove LEGACY code for solving for tsurf (A1,A2,A3) but maintain the same
91        algorithm (same choice: useMaykutPolySatVap=T, postSolvTempIter=0);
92        difference in results only due to machine truncation.
93      - remove MAX_TICE (tsurf is always =< TMELT anyway); keep MIN_TICE if using
94        MaykutPolySatVap; keep MIN_LWDOWN.
95      - adapt SEAICE_MODIFY_GROWTH_ADJ code (untested) to non-legacy formulation.
96      - update output of verification exp. lab_sea (4 fwd: 11 cg2d digits except hb87,
97        + 3 AD: 6 digits except evp) and offline_exf_seaice.seaice (12 digits).
98    o pkg/salt_plume:
99      - isolate saltPlumeFlux array exch into a specific S/R called from
100        do_oceanic_phys.F
101      - add interface to pkg/salt_plume (filling of saltPlumeFlux) in pkg/thsice.
102    o verification:
103      - move untested set-up to MITgcm_contrib/verification_other.
104    o pkg/seaice:
105      - retire old way of SEAICE_AGE. Now replaced with ALLOW_SITRACER.
106    o pkg/seaice:
107      - seaice_solve4temp.F (keeping results unchanged):
108        * add 2 future run-time params to select which saturation vapor pressure
109          formula is used and how post-iteration fluxes are set.
110          Temporary set these 2 params according to option SOLVE4TEMP_LEGACY;
111        * New piece of code (not used) to update surf. atmos. heat flux F_ia using
112          the linearized expression to stay consistent with tsurf finding.
113      - seaice_freedrift.F avoid floating exception in sqrt(y) since y=sqrt(x*x)-x
114        can be < 0.
115    o pkg/seaice/seaice_solve4temp.F (SOLVE4TEMP_LEGACY undef):
116      - remove from F_ia (and from it's derivative dFiDTs1) the contribution of
117        conductive heat flux F_c , and add it explicitly when updating tsurf as
118        solution of: Fc = Fia + d/dT(Fia - Fc) *delta.tsurf
119        so that now F_ia has a consistent meaning through the entire routine.
120        This causes differences at truncation level: update output of fwd exp.
121        global_ocean.cs32x15.seaice.
122    o pkg/seaice:
123      - lots of editing/cleaning in seaice_solve4temp.F + better documentation
124        of arrays, sign/direction of fluxes; no effect on results.
125      - replace hard coded 273.16 (=previous value of celsius2K) by celsius2K
126        in seaice_budget_ocean.F & seaice_solve4temp.F (SOLVE4TEMP_LEGACY part);
127        note: this should have been done before changing celsius2K default.
128      - to keep results unchanged, add back old value of celsius2K in verification
129        exp. input*/data : lab_sea (AD), offline_exf_seaice (fwd+AD) & seaice_obcs
130      - replace hard coded seawater freezing temp in seaice_solve4temp.F (part
131        SOLVE4TEMP_LEGACY) of 271.20 (=previous value of celsius2K + default
132        value of SEAICE_freeze) by celsius2K+SEAICE_freeze so that seawater
133        freezing temp is consistent with value in seaice_growth.F ; this causes
134        differences at machine truncation level: update lab_sea AD output (3/4).
135    o pkg/seaice:
136      - mask (in exf_init_fixed.F) atemp,aqh,evap,precip,runoff,lwflx,areamask
137        and climsst/sss even when using seaice (to prevent calculation that might
138        use SST on land); does not affect any verification exp.
139      - apply mask to taux,tauy (in seaice_get_dynforcing.F); update output
140        of lab_sea.fd & lab_sea.hb87 and global_ocean.cs32x15.seaice_dynmix.
141    o pkg/seaice/seaice_growth.F: add mask to avoid non-zero ice thickness
142      over land (non-legacy code)
143    o vectorize salt_plume package:
144      - add extra code to salt_plume_frac and salt_plume_tendency_apply_s
145      - this code computes plumebk everywhere (also over land), thus requires
146        code to avoid divisions by zero and catch the case of kLev=Nr.
147      - efficiency of salt_plume_frac is still sub-optimal
148    o tools (genmake2):
149      - fix makefile NAME specification (option: -makefile NAME) by adding
150        "-f $MAKEFILE" in few places where it was missing including makedepend
151        command (contribution from Paul).
152    
153    checkpoint63i (2012/01/24)
154    o model/src:
155      - add factorized versions of some EOS code to find_rho.F,
156        define USE_FACTORIZED_EOS to turn it on (default for TARGET_NEC_SX)
157    o model/src:
158      - add celsius2K to namelist PARM01; remove unused recip_rhoNil from PARAMS.h;
159      - change default celsius2K from 273.16 to 273.15
160      - to keep results unchanged, add back old value of celsius2K in verification
161        exp. input*/data : aim.5l_cs, 1D_ocean_ice_column, lab_sea (fwd),
162         global_ocean.cs32x15(seaice) & cpl_aim+ocn(input_atm).
163    o model/src: add a little initialisation trick to find_rho.F and find_alpha.F
164      to make TAF generate vectorizable code
165    o pkg/seaice/seaice_evp.F: add code (copied from CICE) that avoids underflows.
166       Turn on by defining SEAICE_EVP_ELIMINATE_UNDERFLOWS. Most compilers
167       have flags that do this more efficiently.
168    o pkg/diagnostics/diagstats_calc.F
169      - for TARGET_NEC_SX fix the treatment of the scaling factor tmpFac=scaleFact
170    o pkg/obcs (with exch2):
171      - derive OB indices in overlap region from OB-InsideMask (in obcs_init_fixed.F)
172        and remove code (in obcs_readparms.F) which was based on EXCH of indices
173        (through buffer) and did not account for exch2 (e.g., CS-grid) topology.
174    o pkg/exf and seaice exp:
175      - change offline_exf_seaice.seaicetd test exp. to use default DIFF1 value (=0)
176        so that switching off area & heff advection flags does not affect results.
177      - change default EXF_LWDOWN_WITH_EMISSIVITY to #define in EXF_OPTIONS.h
178      - keep exp. seaice_obcs & 1D_ocean_ice_column(ad) unchanged (using #undef
179        EXF_LWDOWN_WITH_EMISSIVITY) and, using pkg/exf default emissivities, update
180        results of verification experiments: 1D_ocean_ice_column(fwd),
181        global_ocean.cs32x15.seaice(fwd+ad) & seaice_dynmix(ad), lab_sea (all 8)
182        and offline_exf_seaice (all 4).
183    o pkg/seaice:
184      - remove array YNEG, RIVER, TMIX (replaced by local var) from common block;
185        remove also areaNm1 & hEffNm1 when SEAICE_GROWTH_LEGACY is undef.
186      - fix bug: areaNm1 & hEffNm1 are needed in seaice_growth (SEAICE_GROWTH_LEGACY)
187        but were not filled when resp. SEAICEadvArea=F & SEAICEadvHeff=F and
188        not multi-dim advection;
189      - fix seaice_growth.F to compile with both SEAICE_GROWTH_LEGACY and
190        SHORTWAVE_HEATING #undef.
191    o optim: make Makefile more robust (?)
192    o pkg/obcs:
193      * fix treatment of obcs_read_pickup for TAF
194    o pkg/shelfice:
195      * add missing initialisation of num_shifwflx
196      * new adjoint verification exp. for isomip
197      * change Prandtl and Schmidt numbers from generic formulations
198        (in terms of model diffus. and visc.) to separate runtime
199        parameters, with Holland and Jenkins (1999) default values.
200    o pkg/exf (interpolation):
201      - extended input field (2 rows) near the N & S poles:
202        * fill in with the symetric value (when even Nb of data in longitude)
203        * add average value at the poles only for scalar quantities ; for vector
204          component interpolation, skip the averaging and keep duplicated values,
205          unless the 2 components have same location (uvInterp=T) in which case
206          interpolate the 2 components together using S/R EXF_INTERP_UV.
207      - new S/R EXF_INTERP_UV to interpolate the 2 components of a vector field
208        together: this allows to account properly for local orientation when
209        averaging at N & S pole.
210      - add CPP option EXF_USE_OLD_INTERP_POLE to recover old results regarding
211        exf-interpolation near N & S poles. Undef by default.
212      - add debug check/print on 1rst iter if debugLevel >=2.
213    o pkg/exf:
214      - change masking flags definition (no longer "parameter"), put them in
215        common block and set them in S/R EXF_INIT_FIXED.
216      - change recognized masking flag from s,u,v to c,w,s since the mask
217        to use (maskC,W,S) depends on position on model grid and has little to
218        do with scalar/vector difference; fix masking if using P-coordinates.
219      - fix masking of wind-stress (was wrong if interpolated or read on A-grid)
220        and update results of exp. global_with_exf (x2).
221      - fix setting of zenith-angle table when SHORTWAVE_HEATING is undef.
222    o pkg/obcs
223      - S/R obcs_calc_stevens: fix a small bug (gammat -> gammas where appropriate)
224    o pkg/exf (interpolation):
225      - assume periodicity in X only if input field cover full longitude range.
226      - improve search for lat. index (supposed to be faster, in ~log2(ny) steps,
227        and should vectorise).
228      - fix input lat of the 2 added row (in case we provide N.pole data).
229    
230    checkpoint63h (2011/12/30)
231    o pkg/seaice:
232      - change declaration of UVM from _RL to _RS in order to get B-grid
233        uIce,vIce monitor when _RS = real*4
234    o pkg/offline:
235      - new S/R OFFLINE_RESET_PARMS for resetting main-model params (switch off flags);
236      - compute vertical velocity if not read from file (switch on exactConserv
237        & staggerTimeStep);
238      - fix output of ptracer monitor iter & time for default PTRACERS_monitorFreq.
239    o verification:
240      - update grid-files (in tutorial_held_suarez_cs/input and fizhi-cs-32x32x40/input)
241        with grid-angle generated using "utils/matlab/cs_grid/cubeCalcAngle.m":
242        fix Pb in yG definition @ 2 missing corners (previously yG was averaged);
243      - update output of exp. global_ocean.cs32x15.viscA4 after changing
244        grid-file angles (used here for coriolis-3d);
245      - remove (or gzip) few files not needed to run fizhi-cs experiments.
246    o pkg/exf (vector interpolation):
247      - rotate vector component toward local grid-axis orientation using grid-angles
248        (stored in GRID.h) instead of locally computed rotation angle; keep old code
249        available with exf option EXF_USE_OLD_VEC_ROTATION (undef by default).
250    o pkg/seaice:
251      - allow to compile with exf options ALLOW_ATM_TEMP or ALLOW_DOWNWARD_RADIATION
252        undefined. Fix and remove the stop when ALLOW_RUNOFF is undefined.
253    o pkg/PKG_OPTIONS.h files:
254      - move #include "CPP_OPTIONS.h" just after #include "PACKAGES_CONFIG.h",
255        outside of the #ifdef ALLOW_THISPKG / #endif block.
256      - update verification/*/code/PKG_OPTIONS.h files.
257    o add a verification experiment (offline_exf_seaice/input.seaice) that test
258      the B-grid LSOR solver
259    o pkg/seaice: sort out emissivity and long wave radiation step 2:
260      - add emissivity for snow and ice as new run-time parameters
261        (unfortunately) that default to the corresponding exf values; this
262        changes results in most verification experiments so that for backward
263        compatibility these parameter have to be set explicitly to inconsistent
264        values (ugly);
265      - the exf-flag EXF_LWDOWN_WITH_EMISSIVITY then gets rid off the hard-wired
266        emissivities of 0.97 associated with lwdownloc in S/R seaice_solve4temp
267        until we agree how to handle this bug properly
268    o pkg/exf (interpolation):
269      - add a set of run-time param ({inputfield}_interpMethod), one for
270        each interpolated input field, to select the interpolation method
271        with a value of zero switching off the interpolation;
272      - print interpolation parameters to standard output;
273      - refine exf_check.F accordingly ; stop if USE_NO_INTERP_RUNOFF is defined
274        (to use instead runoff_interpMethod=0 in data.exf).
275      - simplify default setting of interpolation parameters (for all fields,
276        set position to match model grid cell-center position, leading to trivial
277        interpolation in case of regular Lat-Lon grid) and fix for the case of
278        non-uniform delY.
279    o pkg/exf/exf_radiation.F: add the factor ocean_emissivity to lwdown, for
280       within #ifdef EXF_LWDOWN_WITH_EMISSIVITY/#endif. Unless ocean_emissivity=1.
281       this factor is absolutely required, because the lw exitance (= out-going
282       long wave radiation) is emissivity*stefanBoltzmann*T^4 + rho*lwdown,
283       where the reflectivity rho = 1-emissivity for conservation reasons. Once
284       this is established, we can remove the CPP-Flag (if we want to).
285    o pkg/seaice:
286      - qualify a stop statement in S/R seaice_check: EXF_READ_EVAP and
287        ALLOW_BULKFORMULAE are only required if SEAICE_EXTERNAL_FLUXES is defined
288      - sort out emissivity and long wave radiation, step 1: make SEAICE_emissivity
289        what the name implies (and not emissivity*BoltzmannConstant), this means
290        the old default value of 5.5e-8 now means
291        5.5e-8/5.670e-8 = 0.97001763668430343479 as ocean_emissivity in
292        S/R exf_readparms
293      - FV-discretization of the B-grid LSOR solver, turn on with
294        SEAICE_LSRBNEW. This new solver also involves a slight re-organization
295        of the calling routine dynsolver, so that B and C-grid code look a
296        little more alike.
297      - fix index bugs in ostres.F (B-grid code)
298    o pkg/seaice/seaice_ocean_budget.F: change (unused) code to make it look better
299    o pkg/seaice/seaice_readparms.F: make ocean_emissivity*stefanBoltzmann the
300      default for SEAICE_emissivity, if useEXF; requires setting a wrong
301      parameter value in global_ocean.cs32x15/input.seaice/data.seaice for
302      backward compatiblity
303    o model/src: use sigmaR in calc_ivdc
304    
305    checkpoint63g (2011/12/16)
306    o pkg/seaice/seaice_growth.F:
307      fix heat conservation of the coupled ocean-seaice system.
308      when SEAICE_HEAT_CONSERV_FIX is defined, the mismatch of
309      solid vs liquid water treatment is resolved via QNET.
310    o pkg/seaice/seaice_growth.F:
311      add missing term for sublimation in saltFlux, which was breaking conservation.
312    o pkg/seaice/seaice_model.F:
313      Remove this patholigical case treatment in evolution branch,
314      where it is un-necessary and breaks conservation.
315      Update global_ocean.cs32x15/results accordingly for
316      output.seaice.txt output_adm.seaice.txt and output_adm.seaice_dynmix.txt
317    o model/src:
318      useRealFreshWaterFlux: remove masking of EmPmP (using maskInC) in
319      external_forcing_surf.F and apply mask directly in S/R SOLVE_FOR_PRESSURE.
320    o pkg/obcs:
321      modify Stevens boundary conditions so that S/R obcs_calc_stevens computes
322      tendency for temperature and salinity that is then applied to update
323      theta and salt in S/R obcs_apply_ts; this requires proper masking of all
324      horizontal advection and diffusion contributions on the boundary (in
325      S/Rs gad_advection, gad_calc_rhs, gmredi_rtransport, gmredi_calc_diff), and
326      removing the mask in S/R timestep_tracer. The advantage of this approach is
327      that the updated tracer values include contributions from the surface
328      forcing and vertical diffusion.
329      This modification changes exp4.stevens because of vertical diffusion.
330    o model/src:
331      change non-curvilinear grid setting to also work with exch2 + blank tiles:
332      - move delX,delY to new header file (SET_GRID.h) and adjust length to 1rst
333        face dimensions.
334      - new S/R INI_LOCAL_GRID to define model tile-local grid (using same units
335        as delX,delY) and called from S/R INI_CARTESIAN_GRID, INI_CYLINDER_GRID
336        and INI_SPHERICAL_POLAR_GRID.
337      change test-experiment global_ocean.90x40x15:
338      - split the domain in many more tiles (9x4 tiles of 10x10 each);
339      - switch to exch2 and remove 1 blank-tile (but only for MPI test).
340      - update results of both test (std & dwnslp).
341    o pkg/diagnostics/diagstat_calc.F: fix problem with non-initialised halos in
342       tmp-fields for TARGET_NEC_SX at the cost of extra loops and less vectorisation
343    o model/src:
344      - take sigma-coords related code out of update_etah.F into new S/R UPDATE_ETAWS
345        and fix initialisation when using sigma-coords.
346    o model/src:
347     - improve Gael's changes from Jan 14, 2011 "addition of an 'update' of hfacc etc.
348       to their current value at the beginning of forward_step.F": add a new run-time
349       switch "doResetHFactors" (default=false) and use it to do (or not) the resetting.
350     - set doResetHFactors=T in the following test exp:
351        global_ocean.90x40x15/input (rStar) & input.dwnslp (linFS),
352        global_ocean.cs32x15/input.seaice (rStar), hs94.cs-32x32x5/input.impIGW (linFS)
353        and tutorial_global_oce_in_p (nonLinFS in p)
354    o pkg/ecco
355      - added IES cost term
356    o verification/advect_xz
357      - scale down the depth by 1/100 (from 200 km to just 2.km)
358      - add secondary test using divergent flow, r-star and implicit vertical advection.
359      - add note (check_conserve_TS.txt) and matlab script to check global
360        conservation of T & S with NonLin-FreeSurf and Adams-Bashforth.
361    o pkg/rbcs:
362      - add missing relaxUFile & relaxVFile in namelist (in rbcs_readparms.F).
363    o pkg/obcs (Stevens BCs):
364      - fix various problems in the phase speed computations of the Stevens
365        boundary conditions:
366        - sign error for western and southern boundaries,
367        - time tendencies were underestimated by factor of dTracerLev and some just
368          zero (for multidim advection schemes) -> now estimate time tendencies
369          from difference between previous (n) time level and the one before (n-1);
370          this requires storing a field per tracer per boundary, also in the pickup
371          files.
372        - replace deltaTmom in cflMer/Zon computation with dTracerLev
373        - set default phase velocity to cflMer/Zon
374      - update verification experiment exp4.stevens
375    o pkg/generic_advdiff (implicit_r):
376      - fix implicit vertical advection conservation with AB and/or NonLin-FreeSurf
377        (remove Tr*d/dz(w) in gad_implicit_r.F and add it in gad_calc_rhs.F);
378      - fix implicit vertical diffusion or advection with NonLin FreeSurf
379        (was using current recip_hFacC instead of future recip_hFacC): set future
380        recip_hFac in thermodynamics.F and pass & use it in all vertical implicit
381        solver S/R ;
382      - fill diagnostics of vertical advective fluxes (computed from tendency)
383        when using implicit vert. advection;
384      - update output of exp that uses NonLin-FreeSurf & implicit vertical diffusion:
385         global_ocean.90x40x15 (fwd+AD), global_ocean.cs32x15 (4 fwd +4 AD),
386         tutorial_global_oce_in_p (fwd), tutorial_tracer_adjsens (AD)
387         and cpl_aim+ocn (used in ocean); to be fixed: bottom_ctrl_5x5.
388    o pkg/diagnostics:
389      - add diags for T & S tendency which goes through Adams-Bashforth.
390    
391    checkpoint63f (2011/11/30)
392    o pkg/obcs/obcs_calc_stevens.F:
393      - join some loops to reduce number of if-statements
394      - fix a bug in code for northern and southern boundaries.
395    o pkg/seaice/seaice_init_varia.F
396      - undo resetting UVM=0 that has slipped in unnoticed in r1.49 and
397        caused zero ice-velocities for the B-grid code
398    o pkg/seaice/seaice_init_fixed.F
399      - fix a bug in the initialisation of the second metric terms
400        k2AtC and k2AtZ: k2AtC was set to the value of k2AtZ and k2AtZ was 0.
401      - this affects all seaice configurations with useCurviLinearGrid = .true.
402        and SEAICEuseDynamics = .true. (default) and SEAICEuseMetricTerms
403        = .true. (default)
404      - the only verification experiment affected is global_ocean.cs32x15:
405        icedyn, seaice, and seaice_dynmix (AD)
406    o pkg/thsice/thsice_diagnostics_state.F
407      - only for TARGET_NEC_SX: initialise all of tmpFld, so that overlap does
408        not contain garbage that can lead to surprises in diagstats_calc.F
409    o model/src:
410      - move bi,bj loops inside INTEGR_CONTINUITY ;
411      - call INTEGR_CONTINUITY directly from forward_step.F
412        (previously called from momentum_correction_step.F)
413      - call UPDATE_ETAH from integr_continuity.F and update initialise_varia.F,
414        forward_step.F and pkg/ecco/the_main_loop.F
415    o model/src/do_oceanic_phys.F:
416      - reset addMass to zero only if useICEFRONT ;
417      - separated k-loop for rhoInSitu calculation ;
418      - add 2 diagnostics for wVel*delta^k(Rho) at constant pressure (= WdRHO_P)
419        and at constant T,S (= WdRHOdP);
420      NOTE: change diagnostics WRHOMASS : this is now simply the Vertical transport
421        of In-Situ Density (Anomaly) (=wVel*rho^bar-k) (previously was Vertical
422        transport of locally-referenced potential density);
423        to recover old diag: (WRHOMASS)_old = (WRHOMASS)_new -1/2 * (WdRHOdP)
424    o gluemnc:
425      - replace ncrcat with ncks when adding variables to *.glob.nc
426      - change the way variables without record dimensions are handled so that
427        files that have variables with and without record variables can be glued:
428        add a record dimension with a new unique name to be able to differentiate
429        between variable with and without a-prior record dimensions. Remove
430        this record dimension before adding the variable to the *.glob.nc file.
431        This procedure automatically works also for grid.*.nc files that do not
432        have any record dimension.
433    o verification/cpl_aim+ocn:
434      - generate new reference output on baudelaire (gfortran, mpich2) (previously
435        from old aces-grid cluster, ao + ifort) and update 'run_cpl_test' script.
436    o pkg/obcs/obcs_calc_stevens.F:
437      - add code for northern and southern boundaries.
438      - reorder some loops to save some operations and so that drFBar can be scalar
439    o model/src:
440      - re-arrange extrapolation calculation in Adams-Bashforth S/R (affects machine
441        truncation) and add diagnostics for Adams-Bashforth tendency increment.
442      - update test-exp. AD output:
443        1D_ocean_ice_column, bottom_ctrl_5x5, lab_sea.noseaicedyn, obcs_ctrl;
444      and FWD output: exp4 (x3), fizhi-cs-32x32x40, fizhi-cs-aqualev20,
445        front_relax (x3), global_ocean.90x40x15 (x2), global_ocean.cs32x15 (x5),
446        global_ocean_ebm, ideal_2D_oce, internal_wave, isomip (x3), lab_sea (x4),
447        matrix_example, MLAdjust (x5), natl_box (x2), tutorial_advection_in_gyre,
448        tutorial_global_oce_in_p, tutorial_global_oce_latlon and
449        tutorial_plume_on_slope.
450    o pkg/diagnostics/diagstats_calc.F: add special code for TARGET_NEC_SX
451      that vectorises. This code uses 3 extra 2D fields, F90 array assignments
452      and F90 intrinsic routines SUM, MINVAL, MAXVAL, but since TARGET_NEC_SX
453      does not even come with an F77 compiler anymore, this should not be
454      a limitation
455    
456    checkpoint63e (2011/11/06)
457    o pkg/seaice adjoint of LSR:
458      - substantially rework STORE dirs.
459      - add new flag SEAICE_LSR_ADJOINT_ITER and parameter SOLV_MAX_FIXED
460        this flag will do SOLV_MAX_ITERS but only store SOLV_MAX_FIXED fields
461        and only perform SOLV_MAX_FIXED adjoint iters.
462        If flag SEAICE_LSR_ADJOINT_ITER is undef-ined, the store in the iteration
463        always goes to same record, meaning that the last forward field will be
464        the one used in the adjoint - an approximation.
465      - now produces non-zero LSR-related gradients, and acceptable gradients for
466        An's zonal (x-z) test case (to be checked in)
467      - lab_sea: produces acceptable gradients for lab_sea with forward/backward LSR
468        (but these are screwed up by the thermodynamics in the first place);
469        reduce from 4 to 3 timesteps to avoid t.d. issue as temporary solution;
470        output_adm.txt also reflects changes to seaice_lsr
471      - global_ocean.cs32x15:
472        * the "default" input_ad.seaice has been re-defined to always exclude dynamics
473          (output_adm.seaice.txt was updated)
474        * new input_ad.seaice_dynmix tests a forward LSR / backward free-drift
475          (output_adm.seaice_dynmix.txt)
476    o test-exp. exp4+stevens:
477      - switch off pTracers and nonHydrostatic (restart problems with NH); update output
478    o pkg/seaice (lsr solver):
479      - put coriolis term into FORCEX,Y (as in seaice_evp.F; previously in rhsU,V only);
480        update output (change truncation) of FWD test exp lab_sea & global_ocean.cs32x15
481      - fix SEAICEuseFREEDRIFT for new OBCS version (ndef OBCS_UVICE_OLD)
482      - new parameter "LSR_mixIniGuess" allows (if=2,4) to mix free-drift solution
483        into initial guess for linearised solver; use weight ~ (1/err)^2,4.
484      - compute (with new S/R) and print initial (+ free-driff sol. if available)
485        and final residual of linearised system.
486    o pkg/pp81: add diagnostics for vertical eddy viscosity and diffusivity
487      (requires new subroutines pp81_init_fixed.F/pp81_diagnostics_init.F)
488  o pkg/obcs: Stevens BCs (still only for east and west)  o pkg/obcs: Stevens BCs (still only for east and west)
489    - fix Stevens BCs by using intermediate velocities of previous    - fix Stevens BCs by using intermediate velocities of previous
490      time step as "baroclinic" contribution rather velocity of one grid cell      time step as "baroclinic" contribution rather velocity of one grid cell
491      inside the boundaries; more consistent but makes the entire treatment      inside the boundaries; more consistent but makes the entire treatment
492      more complicated, requires new pickup files and two new S/Rs:      more complicated, requires new pickup files and two new S/Rs:
493      obcs_copy_uv_n and obcs_save_uv_n      obcs_copy_uv_n and obcs_save_uv_n
494      keep old version with flag OBCS_STEVENS_USE_INTERIOR_VELOCITY      keep old version with flag OBCS_STEVENS_USE_INTERIOR_VELOCITY
495      (undefined by default)      (undefined by default)
496    - silently move computation of some grid factors into separate loops to    - silently move computation of some grid factors into separate loops to
497      save some recomputations      save some recomputations
498    - add a hack for non-linear free surface    - add a hack for non-linear free surface
499    - add a verification experiment to exp4 that tests this code    - add a verification experiment to exp4 that tests this code

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