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revision 1.1469 by ifenty, Wed Jun 29 21:44:26 2011 UTC revision 1.1604 by gforget, Sat Mar 3 03:46:25 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/seaice :
8      - final version of turbulent flux params, as agreed at MIT ice meet:
9           SEAICE_mcPheePiston (default is ~ 0.000875)
10           SEAICE_mcPheeTaper (default is 0.)
11           SEAICE_frazilFrac (defualt is 1.)
12           SEAICE_mcPheeStepFunc (default is false)
13      - changes results at trunction error level.
14    o added pkg/frazil - see frazil_description.tex for details
15    o pkg/shelfice/shelfice_thermodynamics.F
16      - fix exponents for velocity dependent exchange coefficients: change
17        from 2/3(=0) to 0.66666666666666667
18      - move computation of velocity dependent exchange coefficients into
19        separate loop, so that it applies to both thermodynamics
20      - move some divisions by constants out of loops
21    
22    checkpoint63j (2012/02/16)
23    o pkg/seaice:
24      - overhaul of seaice_summary.F after feb 2012 clean-up of seaice_growth.F etc.
25      - SItracer:  added run time params, and allow coupling to ocn salinity.
26    o pkg/seaice: remove (almost) all divisions by constants within loops
27      in seaice_growth.F and seaice_solve4temp.F, this changes (only) the cg2d
28      results of global_ocean.cs32x15.seaice from 16 to 11 digits (but only
29      those, caused by 1/QI -> recip_QI) -> update output.seaice.txt,
30      output_adm.seaice_dynmix.txt and also lab_sea: output_adm.evp.txt
31    o pkg/seaice :
32      - simplify McPhee tapering, and allow to use it with SEAICEturbFluxFormula
33        = 1 or 2, using newly added run time parameter SEAICE_availHeatTaper.
34      - fix d_AREAbyATM, d_AREAbyOCN, d_AREAbyICE diags I broke in r1.148.
35      - add permanent SItflux diag that corresponds to TFLUX but includes
36        ice+snow. Hence SItflux-TFLUX should match the ice+snow heat budget.
37      - allow activation/testing of a fix for suspected missing term in
38        ocn-ice heat budget (to be confirmed). To test this, you want to
39        undef SEAICE_DISABLE_HEATCONSFIX, and then set the run time param
40        SEAICEheatConsFix to .TRUE. that also allows the 'SIaaflux' diagnostic.
41      - no change in results, fwd or ad.
42    o global_ocean.cs32x15/results: 3 changes following from the pkg/seaice commit below:
43      - switch to variable freezing point.
44           Results change : cg2d -> 1 digits; ad -> 3-6-6 digits.
45      - bug fix : the sublimation term that was missing is now activated.
46           Results change : cg2d -> 2 digits; ad -> 8-6-6 digits.
47      - bug fix : flooding sign term for SIsal0.NE.0.
48           Result change : cg2d -> 8 digits; ad -> 11-12-9 digits.
49    o pkg/seaice:
50      - unified freezing point treatment : the old SEAICE_VARIABLE_FREEZING_POINT
51        is now the default, and the old default constant freezing point is recovered
52        with SEAICE_tempFrz0    = -1.96,
53             SEAICE_dTempFrz_dS = 0.,
54      - retire SEAICE_freeze (= the old way of specifycing the constant freezing point)
55      - remove ALLOW_SEAICE_FLOODING brackets; run time switch is already there.
56      - bug fix (thanks to M. Losch) : the sublimation term that was missing is now
57        activated. To reproduce old results with this bug define SEAICE_DISABLE_SUBLIM.
58      - bug fix (silly me) : flooding sign term (seaice_growth.F r 1.149line 1211)
59        was wrong for SIsal0.NE.0. Changes cs32x15 results (see above item for detail).
60      - bug fix (thanks to O. Jahn) : area loss for melting  got messed up in
61        seaice_growth r149 for legacy branch (no results change).
62      - introduce SEAICE_CAP_SUBLIM : caps sublimation heat flux in solve4temp (code
63        from I. Fenty).
64      - results did not change except for global_ocean.cs32x15, mostly due to the
65        switch to variable freezing point (see above item for detail).
66    o pkg/thsice:
67      - fix and simplify interface to salt_plume pkg ; diagnose directly amount of
68        seawater freezing in thsice_calc_thickn (not used).
69    o pkg/seaice: turbulent flux term specification via run time params.
70      - replace CPP switches with run time switches to facilitate testing
71      - retired CPPs : MCPHEE_OCEAN_ICE_HEAT_FLUX,
72                       GRADIENT_MIXED_LAYER_TURBULENCE_FACTOR
73      - added runtime parameter : SEAICEturbFluxFormula
74      - move Mcphee constants to SEAICE_PARAMS.h
75      - seaice_readparms.F : read turbulent flux term params (SEAICEturbFluxFormula;
76                 SEAICE_availHeatFrac/Frz, or SEAICE_gamma_t/_frz if apply);
77                 remove seaice_summary call (moved to seaice_init_fixed)
78      - seaice_init_fixed.F : set SEAICE_availHeatFrac/Frz depending on
79        SEAICEturbFluxFormula, and seaice_summary call (moved from seaice_readparms)
80      - seaice_summary.F : add missing report of read turbulent flux term set up
81                           and SITRACER.
82      - seaice_check.F : check range; inform and stop if retired CPPs are used
83                         (incl. SEAICE_AGE).
84      - seaice_growth.F : unified use of SEAICE_availHeatFrac/Frz, without
85             CPP switch, same computation as before for the different options.
86      - change results at the truncation level.
87    o pkg/seaice:
88      - remove un-used parameters LAD & MAX_TICE ; add new run-time parameters:
89        useMaykutSatVapPoly (default=F), postSolvTempIter (default=2) and
90        SEAICE_wetAlbTemp (default=-1e-3). Remove option SEAICE_SOLVE4TEMP_LEGACY.
91      - update verification/*/input*/data.seaice:
92        to reproduce previous results with former #defined SEAICE_SOLVE4TEMP_LEGACY
93        code, set useMaykutSatVapPoly=T & postSolvTempIter=0 ;
94        and to reproduce previous results with former non-SOLVE4TEMP_LEGACY code,
95        set SEAICE_wetAlbTemp=0 & SEAICE_snowThick=0.
96    o pkg/seaice/seaice_solve4temp.F (SOLVE4TEMP_LEGACY):
97      - remove LEGACY code for solving for tsurf (A1,A2,A3) but maintain the same
98        algorithm (same choice: useMaykutPolySatVap=T, postSolvTempIter=0);
99        difference in results only due to machine truncation.
100      - remove MAX_TICE (tsurf is always =< TMELT anyway); keep MIN_TICE if using
101        MaykutPolySatVap; keep MIN_LWDOWN.
102      - adapt SEAICE_MODIFY_GROWTH_ADJ code (untested) to non-legacy formulation.
103      - update output of verification exp. lab_sea (4 fwd: 11 cg2d digits except hb87,
104        + 3 AD: 6 digits except evp) and offline_exf_seaice.seaice (12 digits).
105    o pkg/salt_plume:
106      - isolate saltPlumeFlux array exch into a specific S/R called from
107        do_oceanic_phys.F
108      - add interface to pkg/salt_plume (filling of saltPlumeFlux) in pkg/thsice.
109    o verification:
110      - move untested set-up to MITgcm_contrib/verification_other.
111    o pkg/seaice:
112      - retire old way of SEAICE_AGE. Now replaced with ALLOW_SITRACER.
113    o pkg/seaice:
114      - seaice_solve4temp.F (keeping results unchanged):
115        * add 2 future run-time params to select which saturation vapor pressure
116          formula is used and how post-iteration fluxes are set.
117          Temporary set these 2 params according to option SOLVE4TEMP_LEGACY;
118        * New piece of code (not used) to update surf. atmos. heat flux F_ia using
119          the linearized expression to stay consistent with tsurf finding.
120      - seaice_freedrift.F avoid floating exception in sqrt(y) since y=sqrt(x*x)-x
121        can be < 0.
122    o pkg/seaice/seaice_solve4temp.F (SOLVE4TEMP_LEGACY undef):
123      - remove from F_ia (and from it's derivative dFiDTs1) the contribution of
124        conductive heat flux F_c , and add it explicitly when updating tsurf as
125        solution of: Fc = Fia + d/dT(Fia - Fc) *delta.tsurf
126        so that now F_ia has a consistent meaning through the entire routine.
127        This causes differences at truncation level: update output of fwd exp.
128        global_ocean.cs32x15.seaice.
129    o pkg/seaice:
130      - lots of editing/cleaning in seaice_solve4temp.F + better documentation
131        of arrays, sign/direction of fluxes; no effect on results.
132      - replace hard coded 273.16 (=previous value of celsius2K) by celsius2K
133        in seaice_budget_ocean.F & seaice_solve4temp.F (SOLVE4TEMP_LEGACY part);
134        note: this should have been done before changing celsius2K default.
135      - to keep results unchanged, add back old value of celsius2K in verification
136        exp. input*/data : lab_sea (AD), offline_exf_seaice (fwd+AD) & seaice_obcs
137      - replace hard coded seawater freezing temp in seaice_solve4temp.F (part
138        SOLVE4TEMP_LEGACY) of 271.20 (=previous value of celsius2K + default
139        value of SEAICE_freeze) by celsius2K+SEAICE_freeze so that seawater
140        freezing temp is consistent with value in seaice_growth.F ; this causes
141        differences at machine truncation level: update lab_sea AD output (3/4).
142    o pkg/seaice:
143      - mask (in exf_init_fixed.F) atemp,aqh,evap,precip,runoff,lwflx,areamask
144        and climsst/sss even when using seaice (to prevent calculation that might
145        use SST on land); does not affect any verification exp.
146      - apply mask to taux,tauy (in seaice_get_dynforcing.F); update output
147        of lab_sea.fd & lab_sea.hb87 and global_ocean.cs32x15.seaice_dynmix.
148    o pkg/seaice/seaice_growth.F: add mask to avoid non-zero ice thickness
149      over land (non-legacy code)
150    o vectorize salt_plume package:
151      - add extra code to salt_plume_frac and salt_plume_tendency_apply_s
152      - this code computes plumebk everywhere (also over land), thus requires
153        code to avoid divisions by zero and catch the case of kLev=Nr.
154      - efficiency of salt_plume_frac is still sub-optimal
155    o tools (genmake2):
156      - fix makefile NAME specification (option: -makefile NAME) by adding
157        "-f $MAKEFILE" in few places where it was missing including makedepend
158        command (contribution from Paul).
159    
160    checkpoint63i (2012/01/24)
161    o model/src:
162      - add factorized versions of some EOS code to find_rho.F,
163        define USE_FACTORIZED_EOS to turn it on (default for TARGET_NEC_SX)
164    o model/src:
165      - add celsius2K to namelist PARM01; remove unused recip_rhoNil from PARAMS.h;
166      - change default celsius2K from 273.16 to 273.15
167      - to keep results unchanged, add back old value of celsius2K in verification
168        exp. input*/data : aim.5l_cs, 1D_ocean_ice_column, lab_sea (fwd),
169         global_ocean.cs32x15(seaice) & cpl_aim+ocn(input_atm).
170    o model/src: add a little initialisation trick to find_rho.F and find_alpha.F
171      to make TAF generate vectorizable code
172    o pkg/seaice/seaice_evp.F: add code (copied from CICE) that avoids underflows.
173       Turn on by defining SEAICE_EVP_ELIMINATE_UNDERFLOWS. Most compilers
174       have flags that do this more efficiently.
175    o pkg/diagnostics/diagstats_calc.F
176      - for TARGET_NEC_SX fix the treatment of the scaling factor tmpFac=scaleFact
177    o pkg/obcs (with exch2):
178      - derive OB indices in overlap region from OB-InsideMask (in obcs_init_fixed.F)
179        and remove code (in obcs_readparms.F) which was based on EXCH of indices
180        (through buffer) and did not account for exch2 (e.g., CS-grid) topology.
181    o pkg/exf and seaice exp:
182      - change offline_exf_seaice.seaicetd test exp. to use default DIFF1 value (=0)
183        so that switching off area & heff advection flags does not affect results.
184      - change default EXF_LWDOWN_WITH_EMISSIVITY to #define in EXF_OPTIONS.h
185      - keep exp. seaice_obcs & 1D_ocean_ice_column(ad) unchanged (using #undef
186        EXF_LWDOWN_WITH_EMISSIVITY) and, using pkg/exf default emissivities, update
187        results of verification experiments: 1D_ocean_ice_column(fwd),
188        global_ocean.cs32x15.seaice(fwd+ad) & seaice_dynmix(ad), lab_sea (all 8)
189        and offline_exf_seaice (all 4).
190    o pkg/seaice:
191      - remove array YNEG, RIVER, TMIX (replaced by local var) from common block;
192        remove also areaNm1 & hEffNm1 when SEAICE_GROWTH_LEGACY is undef.
193      - fix bug: areaNm1 & hEffNm1 are needed in seaice_growth (SEAICE_GROWTH_LEGACY)
194        but were not filled when resp. SEAICEadvArea=F & SEAICEadvHeff=F and
195        not multi-dim advection;
196      - fix seaice_growth.F to compile with both SEAICE_GROWTH_LEGACY and
197        SHORTWAVE_HEATING #undef.
198    o optim: make Makefile more robust (?)
199    o pkg/obcs:
200      * fix treatment of obcs_read_pickup for TAF
201    o pkg/shelfice:
202      * add missing initialisation of num_shifwflx
203      * new adjoint verification exp. for isomip
204      * change Prandtl and Schmidt numbers from generic formulations
205        (in terms of model diffus. and visc.) to separate runtime
206        parameters, with Holland and Jenkins (1999) default values.
207    o pkg/exf (interpolation):
208      - extended input field (2 rows) near the N & S poles:
209        * fill in with the symetric value (when even Nb of data in longitude)
210        * add average value at the poles only for scalar quantities ; for vector
211          component interpolation, skip the averaging and keep duplicated values,
212          unless the 2 components have same location (uvInterp=T) in which case
213          interpolate the 2 components together using S/R EXF_INTERP_UV.
214      - new S/R EXF_INTERP_UV to interpolate the 2 components of a vector field
215        together: this allows to account properly for local orientation when
216        averaging at N & S pole.
217      - add CPP option EXF_USE_OLD_INTERP_POLE to recover old results regarding
218        exf-interpolation near N & S poles. Undef by default.
219      - add debug check/print on 1rst iter if debugLevel >=2.
220    o pkg/exf:
221      - change masking flags definition (no longer "parameter"), put them in
222        common block and set them in S/R EXF_INIT_FIXED.
223      - change recognized masking flag from s,u,v to c,w,s since the mask
224        to use (maskC,W,S) depends on position on model grid and has little to
225        do with scalar/vector difference; fix masking if using P-coordinates.
226      - fix masking of wind-stress (was wrong if interpolated or read on A-grid)
227        and update results of exp. global_with_exf (x2).
228      - fix setting of zenith-angle table when SHORTWAVE_HEATING is undef.
229    o pkg/obcs
230      - S/R obcs_calc_stevens: fix a small bug (gammat -> gammas where appropriate)
231    o pkg/exf (interpolation):
232      - assume periodicity in X only if input field cover full longitude range.
233      - improve search for lat. index (supposed to be faster, in ~log2(ny) steps,
234        and should vectorise).
235      - fix input lat of the 2 added row (in case we provide N.pole data).
236    
237    checkpoint63h (2011/12/30)
238    o pkg/seaice:
239      - change declaration of UVM from _RL to _RS in order to get B-grid
240        uIce,vIce monitor when _RS = real*4
241    o pkg/offline:
242      - new S/R OFFLINE_RESET_PARMS for resetting main-model params (switch off flags);
243      - compute vertical velocity if not read from file (switch on exactConserv
244        & staggerTimeStep);
245      - fix output of ptracer monitor iter & time for default PTRACERS_monitorFreq.
246    o verification:
247      - update grid-files (in tutorial_held_suarez_cs/input and fizhi-cs-32x32x40/input)
248        with grid-angle generated using "utils/matlab/cs_grid/cubeCalcAngle.m":
249        fix Pb in yG definition @ 2 missing corners (previously yG was averaged);
250      - update output of exp. global_ocean.cs32x15.viscA4 after changing
251        grid-file angles (used here for coriolis-3d);
252      - remove (or gzip) few files not needed to run fizhi-cs experiments.
253    o pkg/exf (vector interpolation):
254      - rotate vector component toward local grid-axis orientation using grid-angles
255        (stored in GRID.h) instead of locally computed rotation angle; keep old code
256        available with exf option EXF_USE_OLD_VEC_ROTATION (undef by default).
257    o pkg/seaice:
258      - allow to compile with exf options ALLOW_ATM_TEMP or ALLOW_DOWNWARD_RADIATION
259        undefined. Fix and remove the stop when ALLOW_RUNOFF is undefined.
260    o pkg/PKG_OPTIONS.h files:
261      - move #include "CPP_OPTIONS.h" just after #include "PACKAGES_CONFIG.h",
262        outside of the #ifdef ALLOW_THISPKG / #endif block.
263      - update verification/*/code/PKG_OPTIONS.h files.
264    o add a verification experiment (offline_exf_seaice/input.seaice) that test
265      the B-grid LSOR solver
266    o pkg/seaice: sort out emissivity and long wave radiation step 2:
267      - add emissivity for snow and ice as new run-time parameters
268        (unfortunately) that default to the corresponding exf values; this
269        changes results in most verification experiments so that for backward
270        compatibility these parameter have to be set explicitly to inconsistent
271        values (ugly);
272      - the exf-flag EXF_LWDOWN_WITH_EMISSIVITY then gets rid off the hard-wired
273        emissivities of 0.97 associated with lwdownloc in S/R seaice_solve4temp
274        until we agree how to handle this bug properly
275    o pkg/exf (interpolation):
276      - add a set of run-time param ({inputfield}_interpMethod), one for
277        each interpolated input field, to select the interpolation method
278        with a value of zero switching off the interpolation;
279      - print interpolation parameters to standard output;
280      - refine exf_check.F accordingly ; stop if USE_NO_INTERP_RUNOFF is defined
281        (to use instead runoff_interpMethod=0 in data.exf).
282      - simplify default setting of interpolation parameters (for all fields,
283        set position to match model grid cell-center position, leading to trivial
284        interpolation in case of regular Lat-Lon grid) and fix for the case of
285        non-uniform delY.
286    o pkg/exf/exf_radiation.F: add the factor ocean_emissivity to lwdown, for
287       within #ifdef EXF_LWDOWN_WITH_EMISSIVITY/#endif. Unless ocean_emissivity=1.
288       this factor is absolutely required, because the lw exitance (= out-going
289       long wave radiation) is emissivity*stefanBoltzmann*T^4 + rho*lwdown,
290       where the reflectivity rho = 1-emissivity for conservation reasons. Once
291       this is established, we can remove the CPP-Flag (if we want to).
292    o pkg/seaice:
293      - qualify a stop statement in S/R seaice_check: EXF_READ_EVAP and
294        ALLOW_BULKFORMULAE are only required if SEAICE_EXTERNAL_FLUXES is defined
295      - sort out emissivity and long wave radiation, step 1: make SEAICE_emissivity
296        what the name implies (and not emissivity*BoltzmannConstant), this means
297        the old default value of 5.5e-8 now means
298        5.5e-8/5.670e-8 = 0.97001763668430343479 as ocean_emissivity in
299        S/R exf_readparms
300      - FV-discretization of the B-grid LSOR solver, turn on with
301        SEAICE_LSRBNEW. This new solver also involves a slight re-organization
302        of the calling routine dynsolver, so that B and C-grid code look a
303        little more alike.
304      - fix index bugs in ostres.F (B-grid code)
305    o pkg/seaice/seaice_ocean_budget.F: change (unused) code to make it look better
306    o pkg/seaice/seaice_readparms.F: make ocean_emissivity*stefanBoltzmann the
307      default for SEAICE_emissivity, if useEXF; requires setting a wrong
308      parameter value in global_ocean.cs32x15/input.seaice/data.seaice for
309      backward compatiblity
310    o model/src: use sigmaR in calc_ivdc
311    
312    checkpoint63g (2011/12/16)
313    o pkg/seaice/seaice_growth.F:
314      fix heat conservation of the coupled ocean-seaice system.
315      when SEAICE_HEAT_CONSERV_FIX is defined, the mismatch of
316      solid vs liquid water treatment is resolved via QNET.
317    o pkg/seaice/seaice_growth.F:
318      add missing term for sublimation in saltFlux, which was breaking conservation.
319    o pkg/seaice/seaice_model.F:
320      Remove this patholigical case treatment in evolution branch,
321      where it is un-necessary and breaks conservation.
322      Update global_ocean.cs32x15/results accordingly for
323      output.seaice.txt output_adm.seaice.txt and output_adm.seaice_dynmix.txt
324    o model/src:
325      useRealFreshWaterFlux: remove masking of EmPmP (using maskInC) in
326      external_forcing_surf.F and apply mask directly in S/R SOLVE_FOR_PRESSURE.
327    o pkg/obcs:
328      modify Stevens boundary conditions so that S/R obcs_calc_stevens computes
329      tendency for temperature and salinity that is then applied to update
330      theta and salt in S/R obcs_apply_ts; this requires proper masking of all
331      horizontal advection and diffusion contributions on the boundary (in
332      S/Rs gad_advection, gad_calc_rhs, gmredi_rtransport, gmredi_calc_diff), and
333      removing the mask in S/R timestep_tracer. The advantage of this approach is
334      that the updated tracer values include contributions from the surface
335      forcing and vertical diffusion.
336      This modification changes exp4.stevens because of vertical diffusion.
337    o model/src:
338      change non-curvilinear grid setting to also work with exch2 + blank tiles:
339      - move delX,delY to new header file (SET_GRID.h) and adjust length to 1rst
340        face dimensions.
341      - new S/R INI_LOCAL_GRID to define model tile-local grid (using same units
342        as delX,delY) and called from S/R INI_CARTESIAN_GRID, INI_CYLINDER_GRID
343        and INI_SPHERICAL_POLAR_GRID.
344      change test-experiment global_ocean.90x40x15:
345      - split the domain in many more tiles (9x4 tiles of 10x10 each);
346      - switch to exch2 and remove 1 blank-tile (but only for MPI test).
347      - update results of both test (std & dwnslp).
348    o pkg/diagnostics/diagstat_calc.F: fix problem with non-initialised halos in
349       tmp-fields for TARGET_NEC_SX at the cost of extra loops and less vectorisation
350    o model/src:
351      - take sigma-coords related code out of update_etah.F into new S/R UPDATE_ETAWS
352        and fix initialisation when using sigma-coords.
353    o model/src:
354     - improve Gael's changes from Jan 14, 2011 "addition of an 'update' of hfacc etc.
355       to their current value at the beginning of forward_step.F": add a new run-time
356       switch "doResetHFactors" (default=false) and use it to do (or not) the resetting.
357     - set doResetHFactors=T in the following test exp:
358        global_ocean.90x40x15/input (rStar) & input.dwnslp (linFS),
359        global_ocean.cs32x15/input.seaice (rStar), hs94.cs-32x32x5/input.impIGW (linFS)
360        and tutorial_global_oce_in_p (nonLinFS in p)
361    o pkg/ecco
362      - added IES cost term
363    o verification/advect_xz
364      - scale down the depth by 1/100 (from 200 km to just 2.km)
365      - add secondary test using divergent flow, r-star and implicit vertical advection.
366      - add note (check_conserve_TS.txt) and matlab script to check global
367        conservation of T & S with NonLin-FreeSurf and Adams-Bashforth.
368    o pkg/rbcs:
369      - add missing relaxUFile & relaxVFile in namelist (in rbcs_readparms.F).
370    o pkg/obcs (Stevens BCs):
371      - fix various problems in the phase speed computations of the Stevens
372        boundary conditions:
373        - sign error for western and southern boundaries,
374        - time tendencies were underestimated by factor of dTracerLev and some just
375          zero (for multidim advection schemes) -> now estimate time tendencies
376          from difference between previous (n) time level and the one before (n-1);
377          this requires storing a field per tracer per boundary, also in the pickup
378          files.
379        - replace deltaTmom in cflMer/Zon computation with dTracerLev
380        - set default phase velocity to cflMer/Zon
381      - update verification experiment exp4.stevens
382    o pkg/generic_advdiff (implicit_r):
383      - fix implicit vertical advection conservation with AB and/or NonLin-FreeSurf
384        (remove Tr*d/dz(w) in gad_implicit_r.F and add it in gad_calc_rhs.F);
385      - fix implicit vertical diffusion or advection with NonLin FreeSurf
386        (was using current recip_hFacC instead of future recip_hFacC): set future
387        recip_hFac in thermodynamics.F and pass & use it in all vertical implicit
388        solver S/R ;
389      - fill diagnostics of vertical advective fluxes (computed from tendency)
390        when using implicit vert. advection;
391      - update output of exp that uses NonLin-FreeSurf & implicit vertical diffusion:
392         global_ocean.90x40x15 (fwd+AD), global_ocean.cs32x15 (4 fwd +4 AD),
393         tutorial_global_oce_in_p (fwd), tutorial_tracer_adjsens (AD)
394         and cpl_aim+ocn (used in ocean); to be fixed: bottom_ctrl_5x5.
395    o pkg/diagnostics:
396      - add diags for T & S tendency which goes through Adams-Bashforth.
397    
398    checkpoint63f (2011/11/30)
399    o pkg/obcs/obcs_calc_stevens.F:
400      - join some loops to reduce number of if-statements
401      - fix a bug in code for northern and southern boundaries.
402    o pkg/seaice/seaice_init_varia.F
403      - undo resetting UVM=0 that has slipped in unnoticed in r1.49 and
404        caused zero ice-velocities for the B-grid code
405    o pkg/seaice/seaice_init_fixed.F
406      - fix a bug in the initialisation of the second metric terms
407        k2AtC and k2AtZ: k2AtC was set to the value of k2AtZ and k2AtZ was 0.
408      - this affects all seaice configurations with useCurviLinearGrid = .true.
409        and SEAICEuseDynamics = .true. (default) and SEAICEuseMetricTerms
410        = .true. (default)
411      - the only verification experiment affected is global_ocean.cs32x15:
412        icedyn, seaice, and seaice_dynmix (AD)
413    o pkg/thsice/thsice_diagnostics_state.F
414      - only for TARGET_NEC_SX: initialise all of tmpFld, so that overlap does
415        not contain garbage that can lead to surprises in diagstats_calc.F
416    o model/src:
417      - move bi,bj loops inside INTEGR_CONTINUITY ;
418      - call INTEGR_CONTINUITY directly from forward_step.F
419        (previously called from momentum_correction_step.F)
420      - call UPDATE_ETAH from integr_continuity.F and update initialise_varia.F,
421        forward_step.F and pkg/ecco/the_main_loop.F
422    o model/src/do_oceanic_phys.F:
423      - reset addMass to zero only if useICEFRONT ;
424      - separated k-loop for rhoInSitu calculation ;
425      - add 2 diagnostics for wVel*delta^k(Rho) at constant pressure (= WdRHO_P)
426        and at constant T,S (= WdRHOdP);
427      NOTE: change diagnostics WRHOMASS : this is now simply the Vertical transport
428        of In-Situ Density (Anomaly) (=wVel*rho^bar-k) (previously was Vertical
429        transport of locally-referenced potential density);
430        to recover old diag: (WRHOMASS)_old = (WRHOMASS)_new -1/2 * (WdRHOdP)
431    o gluemnc:
432      - replace ncrcat with ncks when adding variables to *.glob.nc
433      - change the way variables without record dimensions are handled so that
434        files that have variables with and without record variables can be glued:
435        add a record dimension with a new unique name to be able to differentiate
436        between variable with and without a-prior record dimensions. Remove
437        this record dimension before adding the variable to the *.glob.nc file.
438        This procedure automatically works also for grid.*.nc files that do not
439        have any record dimension.
440    o verification/cpl_aim+ocn:
441      - generate new reference output on baudelaire (gfortran, mpich2) (previously
442        from old aces-grid cluster, ao + ifort) and update 'run_cpl_test' script.
443    o pkg/obcs/obcs_calc_stevens.F:
444      - add code for northern and southern boundaries.
445      - reorder some loops to save some operations and so that drFBar can be scalar
446    o model/src:
447      - re-arrange extrapolation calculation in Adams-Bashforth S/R (affects machine
448        truncation) and add diagnostics for Adams-Bashforth tendency increment.
449      - update test-exp. AD output:
450        1D_ocean_ice_column, bottom_ctrl_5x5, lab_sea.noseaicedyn, obcs_ctrl;
451      and FWD output: exp4 (x3), fizhi-cs-32x32x40, fizhi-cs-aqualev20,
452        front_relax (x3), global_ocean.90x40x15 (x2), global_ocean.cs32x15 (x5),
453        global_ocean_ebm, ideal_2D_oce, internal_wave, isomip (x3), lab_sea (x4),
454        matrix_example, MLAdjust (x5), natl_box (x2), tutorial_advection_in_gyre,
455        tutorial_global_oce_in_p, tutorial_global_oce_latlon and
456        tutorial_plume_on_slope.
457    o pkg/diagnostics/diagstats_calc.F: add special code for TARGET_NEC_SX
458      that vectorises. This code uses 3 extra 2D fields, F90 array assignments
459      and F90 intrinsic routines SUM, MINVAL, MAXVAL, but since TARGET_NEC_SX
460      does not even come with an F77 compiler anymore, this should not be
461      a limitation
462    
463    checkpoint63e (2011/11/06)
464    o pkg/seaice adjoint of LSR:
465      - substantially rework STORE dirs.
466      - add new flag SEAICE_LSR_ADJOINT_ITER and parameter SOLV_MAX_FIXED
467        this flag will do SOLV_MAX_ITERS but only store SOLV_MAX_FIXED fields
468        and only perform SOLV_MAX_FIXED adjoint iters.
469        If flag SEAICE_LSR_ADJOINT_ITER is undef-ined, the store in the iteration
470        always goes to same record, meaning that the last forward field will be
471        the one used in the adjoint - an approximation.
472      - now produces non-zero LSR-related gradients, and acceptable gradients for
473        An's zonal (x-z) test case (to be checked in)
474      - lab_sea: produces acceptable gradients for lab_sea with forward/backward LSR
475        (but these are screwed up by the thermodynamics in the first place);
476        reduce from 4 to 3 timesteps to avoid t.d. issue as temporary solution;
477        output_adm.txt also reflects changes to seaice_lsr
478      - global_ocean.cs32x15:
479        * the "default" input_ad.seaice has been re-defined to always exclude dynamics
480          (output_adm.seaice.txt was updated)
481        * new input_ad.seaice_dynmix tests a forward LSR / backward free-drift
482          (output_adm.seaice_dynmix.txt)
483    o test-exp. exp4+stevens:
484      - switch off pTracers and nonHydrostatic (restart problems with NH); update output
485    o pkg/seaice (lsr solver):
486      - put coriolis term into FORCEX,Y (as in seaice_evp.F; previously in rhsU,V only);
487        update output (change truncation) of FWD test exp lab_sea & global_ocean.cs32x15
488      - fix SEAICEuseFREEDRIFT for new OBCS version (ndef OBCS_UVICE_OLD)
489      - new parameter "LSR_mixIniGuess" allows (if=2,4) to mix free-drift solution
490        into initial guess for linearised solver; use weight ~ (1/err)^2,4.
491      - compute (with new S/R) and print initial (+ free-driff sol. if available)
492        and final residual of linearised system.
493    o pkg/pp81: add diagnostics for vertical eddy viscosity and diffusivity
494      (requires new subroutines pp81_init_fixed.F/pp81_diagnostics_init.F)
495    o pkg/obcs: Stevens BCs (still only for east and west)
496      - fix Stevens BCs by using intermediate velocities of previous
497        time step as "baroclinic" contribution rather velocity of one grid cell
498        inside the boundaries; more consistent but makes the entire treatment
499        more complicated, requires new pickup files and two new S/Rs:
500        obcs_copy_uv_n and obcs_save_uv_n
501        keep old version with flag OBCS_STEVENS_USE_INTERIOR_VELOCITY
502        (undefined by default)
503      - silently move computation of some grid factors into separate loops to
504        save some recomputations
505      - add a hack for non-linear free surface
506      - add a verification experiment to exp4 that tests this code
507    o make gluemnc/xplodemnc work with (moron) non-GNU shell tools
508    
509    checkpoint63d (2011/10/25)
510    o pkg/obcs + seaice-dynamics:
511      - new implementation calls OBCS_APPLY_UVICE (in seaice_dynsolver.F) before
512        solving for uIce,vIce and prevent SEAICE_LSR or SEAICE_EVP to modify OB
513        values (consistent with an implicit method).
514      - add option OBCS_UVICE_OLD (in OBCS_OPTIONS.h, defined by default) to
515        return to older implementation (same results as before); note that none of
516        the "experimental" OBCS_SEAICE options are implemented in the new version.
517      - switch test exp. seaice_obcs to use new version (update output).
518    o pkg/seaice:
519      - add few stop (B-grid & CS-exch, B-grid & obcs, AUTODIFF & SEAICE_maskRHS)
520      - add parenthesis in Water-Ice drag calculations (evp & lsr);
521      - in seaice_lsr.F, simplify and fix AA3 setting in case sNx or sNy=1;
522        and fix case SEAICE_waterDrag=0 (but unstable if no or little seaice)
523      - update output of test exp lab_sea that uses evp or lsr (fwd+ad)
524        and global_ocean.cs32x15 (icedyn & seaice fwd+ad).
525    o pkg/layers:
526      - Include potential density as new coordinate (Thanks to David Munday)
527    o pkg/dic:
528      - Remove subroutine CALC_PCO2_APPROX_CO3 from carbon_chem.F and add
529        carbonate computation/output to CALC_PCO2_APPROX
530    o pkg/generic_advdiff
531      - make TAF generate code that vectorizes:
532        gad_dst3fl_adv_*.F, gad_u3c4_impl_r.F
533    o model/src:
534      - improve vectorization also for adjoint code of
535        solve_tridiagonal and solve_pentadiagonal. As this requires up to
536        5 new 3D-fields, this code is only turned on for the combination of
537        ALLOW_AUTODIFF_TAMC and TARGET_NEC_SX. Also remove error message
538        for singular matrix check (only for TARGET_NEC_SX).
539      - remove hard-wiring of CPP-flag ALLOW_SOLVERS_KLOOPINSIDE to
540        ALLOW_AUTODIFF. This flag now needs to be set outside of
541        solve_tri/pentadiagonal.F
542    o pkg/exf:
543      - fix previous modif in exf_readparms.F (revision 1.66: treatment of
544        optional namelist EXF_NML_OBCS).
545      - add many debug-print (to trace down where pkg/cal error msg comes from)
546    o pkg/mom_vecinv/mom_vi_hdissip.F
547      - rearrange loops so that vectorization is improved and in particular
548        the adjoint routine vectorizes. The code is a little longer now, but I
549        think easier to read.
550        Note: CPP-flag MOM_VI_ORIGINAL_VISCA4 is not tested.
551    o pkg/seaice:
552      - allow to specify initial seaice velocity from files (uIceFile,vIceFile)
553    o pkg/exch2:
554      - alternative code (without tile x tile matrix) for cumulated (global) sum;
555        used as default; keep using matrix version in adjustment.cs-32x32x1.
556    o tools/build_options:
557      - after merging some MPI and/or multi-threads specific optfiles so that
558        the modified default optfile support both built (using genmake2 -mpi
559        for the MPI built, using genmake2 -omp for OpenMP built),
560        move now obsolete optfiles to tools/build_options/unsupported/
561       (add copy of email sent to support list in doc/optfiles_changes.txt)
562    
563    checkpoint63c (2011/09/28)
564    o pkg/ebm:
565      - fix ebm_zonalmean.F for several procs in Ydir (nPy > 1); update output of
566        test exp. global_ocean_ebm (affects machine truncation, 12 digits for cg2d)
567    o pkg/seaice (SItracer pickup)
568    * Simple code for pickup of SItracer fields (#define ALLOW_SITRACER)
569      To be done:
570      - thorough testing of missing fields in S/R seaice_read_pickup
571      - thorough matching between generic tracers and specific fields used
572        (e.g. volume-weighted age, area-weighted age, salinity, ...)
573    o pkg/grdchk:
574      - all procs calculate and print finite-difference gradient (for testreport)
575      - change description output used by testreport;
576      - AD testing: also compare and report Finite-difference gradient;
577        => update all output_adm*.txt
578    o test exp. global_ocean_ebm:
579      - switch back useRealFreshWaterFlux (no problem anymore with run-off);
580        and turn on exactConserve; update (fwd) output.
581    o pkg/seaice (LSR):
582      - print to STDOUT number of solver iterations at SEAICE_monFreq interval.
583      - modify solver to deal cleanly with u/v switch at face edges (CS-grid):
584        * identical results with non-CS topology (but save up to half of EXCH calls)
585        * no much changes in cs-32 verification tests since no ice at face edges
586         (differences due to convergence criteria, since nb of iterations changed)
587        * expect some differences on lat-lon-cap grid.
588        update FWD results of global_ocean.cs32x15 test exp. (icedyn & seaice)
589    o pkg/exch2:
590      - add new CPP option to disable Cumul-Sum matrix (to save storage when using
591        many tiles); until alternative coding is added, just add a stop.
592    o pkg/kpp:
593      - move ptracer/salt correction to KPP diffusivity from calc_3d_diffusivity.F
594        to S/R KPP_CALC_DIFF_PTR (+ add tracer-index to argument list).
595    o optfiles:
596      - merged few MPI specific (*+mpi*) and multi-threads specific (*+mth) optfiles
597        into corresponding standard one, which now support different build:
598        (when using "genmake2 -mpi" for MPI built, "genmake2 -omp" for OpenMP built)
599      - add "darwin_amd64_gfortran" optfile (initially from Constantinos, tested by Gael)
600    o pkg/obcs (seaice):
601      - add missing EXCH for uIce,vIce after applying OBCS;
602      - remove S/R EXF_SWAPFFIELDS_X/Y , disable S/R EXF_SET_OBCS_X/Y by adding
603        argument = number of levels to S/R EXF_SWAPFFIELDS_XZ/YZ and S/R
604        EXF_SET_OBCS_XZ/YZ ; update obcs_exf_load.F;
605      - fix EXF_SET_OBCS_XZ/YZ for multi-threaded (assuming loaded arrays are shared)
606      - verification exp. seaice_obcs: split domain in 2 tiles ; add SIZE.h_mpi
607        and eedata.mth for MPI and mutlti-threaded testing.
608    o pkg/flt:
609      - make FLT EXCH working with multi-threads (and MPI + multi-threads);
610      - use buffer for floats IO (trajectories & profiles); size set in FLT_SIZE.h;
611      - fix pickup and trajectories + profiles output with multi-threads;
612      - add parameter to select group of fields to write along trajectory and
613        profile (default unchanged);
614      - only call PORT_RAND* function when flt_noise <> 0;
615      - add multi-threaded test for verification exp. flt_example.
616    o eesupp/src:
617      - fix S/R ALL_PROC_DIE for MPI+multi-threads.
618      - USE_OMP_THREADING: check that number of threads (from eedata) matches
619        actual number (from env.var. setting).
620    o pkg/ebm:
621      - fix multi-threading in ebm_area_t.F ; clean-up EBM.h header file.
622      - add multi-threaded test for verification exp. global_ocean_ebm
623    
624    checkpoint63b (2011/08/29)
625    o pkg/ebm:
626      - fix sign of runoff;
627      - update directly forcing fields (Qnet,EmPmR) to use standard
628        external_forcing_surf.F (remove ebm_forcing_surf.F);
629      - avoid loading forcing fields a 2nd time (1rst time from ini_forcing.F);
630      - set either tauThetaClimRelax (in data) or tauThetaZonRelax (in data.ebm)
631        and apply relaxation towards corresponding SST field (2-D map or ZonAver).
632      - update global_ocean_ebm parameters file data and update output (fwd+ad).
633    o verification/matrix_example:
634      - split domain in 8 tiles (2x4); add SIZE.h_mpi and eedata.mth for
635        MPI and mutlti-threaded testing.
636    o pkg/matrix:
637      - change name of S/R MATRIX_INIT to S/R MATRIX_INIT_VARIA ;
638      - fix for multi-tiles (add bi,bj indices to exp/impMatrixCounter);
639      - fix for multi-threaded (remove DATA statement);
640      - use standard DIFFERENT_MULTIPLE function;
641      - add MATRIX_OPTIONS.h
642    o verification/matrix_example:
643       To allow to split the domain in several tiles, change the domain size
644        from 31x31 to 32x32 by adding 1 row (on Southern side) + 1 column (on
645        Western side) of land points.
646    o (*_)write_pickup:
647      - fix few bugs in mypackage_read/write_pickup.F
648      - in MDS_WR_METAFILES calls, replace "myTime" by a local copy into
649        array of length 1 (was caught by compiler syntax-check).
650    o pkg/diagnostics (velocity potential solver):
651      - fix initialisation of main diagonal matrix (for overlap values)
652    o tools/build_options:
653      - towards single optfile for MPI and non-MPI built: merge few +mpi optfile
654        into previously non MPI one (linux_am64 pgf77,open64,pathf90,ifort11)
655      - linux_amd64_gfortran: merge +mpi_generic version into standard optfile:
656        * move IEEE flags to DEVEL section; take IEEE flags from +mpi_generic ;
657        * FAST case: for now, keep -O3 with ini_masks_etc.F in NOOPTFILES list;
658        and use "-devel" testreport option for standard testing on baudelaire.
659    o pkg/grdchk:
660      - Assume that all gradient-check position are within the same tile
661        corresponding to global indices (iGloTile,jGloTile) and that
662        positions (i,j indices or nbeg) are local to this tile;
663      - set tile local-indices and proc. number according to tile global-indices;
664      - remove grdchkwhichproc from namelist (retired param);
665      - send adjoint gradient to all procs so that all procs print it to STDOUT;
666      - switch on MPI test for global_ocean.90x40x15 AD test experiment.
667    o adding package bbl (Bottom Boundary Layer)
668      description in MITgcm/pkg/bbl/bbl_description.tex
669      example/test experiment in MITgcm_contrib/bbl
670    o adjoint verifications
671      - changed 5 experiments to multi-tiles
672        * global_ocean.90x40x15
673        * obcs_ctrl
674        * offline_exf_seaice
675        * tutorial_dic_adjoffline
676        * tutorial_tracer_adjsens
677        changed reference output for those that crossed tile boundaries
678        (changed choices of gradient check positions)
679      - with same tiling, switch on MPI test for the last 4 (add SIZE.h_mpi)
680      - temporary bug fix in grdchk_loc.F for obcs
681    o genmake2 & testreport
682      - add target "obj" (just for OBJFILES files) to Makefile;
683      - add option to specify FEXTRAFLAGS on command line.
684    o pkg/mypackage:
685      - remove bi,bj arguments from argument list of S/R MYPACKAGE_CALC_RHS
686    
687    checkpoint63a (2011/08/02)
688    o pkg/diagnostics (velocity potential):
689      - fix velocity-potential calculation when using OBCS: balance net inflow
690        at each level (new S/R OBCS_DIAG_BALANCE).
691      - fix some of the problems with OBCS in stream-function calculation.
692    o pkg/exf/exf_readparms.F
693      - make treatment of optional namelists (EXF_NML_04, EXF_NML_SGRUNOFF,
694        EXF_NML_OBCS) more consistent, so that you need not have these lists
695        in data.exf when they are not used.
696    o optim/optim_readdata.F:
697      - add some output about obcs variables that might help debugging
698      - add a check about nvarlength
699    o pkg/ctrl: once again, fix computation of endrec in s/r ctrl_init_rec
700    o pkg/diagnostics (velocity potential):
701      - fix mask for OBCS (still problems in stream-function with OBCS);
702      - add specific parameter (default = main code CG2D params) for solver;
703      - in case of poor convergence, use solution corresponding to lowest residual.
704    o pkg/seaice/seaice_growth.F: small changes that permit vectorizable
705      adjoint code. In general statements like tmpscal=fld(i,j) are problematic
706      and should be avoided where possible.
707    o model/src (rStar):
708      - include r* effect on reference-state (PhiRef) in totPhiHyd
709        (so that it's really the potential anomaly at the cell center);
710        affect solution only if z* with full pressure in EOS.
711      - test-exp global_ocean.90x40x15: reduce viscA4 (was not stable) and
712        update output (because of z* in totPhiHyd and viscA4 changes);
713      - keep the previous diagnostics as "PHIHYDcR" (closer to potential anomaly
714        @ constant r) until interpolation at constant r is implemented.
715    o pkg/diagnostics
716      - fix RCENTER diagnostics in case cell center is not at interface middle
717    o add code for TEOS-10 (www.teos-10.org, McDougall et al. 2011). Use
718      this eos with eosType = 'TEOS10', in data (PARM01). This eos implies
719      that THETA and SALT are "conservative temperature" and "absolute
720      salinity"
721    o pkg/ctrl
722      - fix computation of endrec in s/r ctrl_init_rec
723      - ctrl_pack/unpack_*: remove unused variables and some obsolete code
724    o pkg/seaice/seaice_growth.F
725      - fix recomputation with FENTY_AREA_EXPANSION_CONTRACTION code,
726        remove then obsolete STORE directives
727      - fix STORE directives for tice and tices, so that only the
728        appropriate part of the fields are stored (and not the entire
729        field); update global_ocean.cs32x15.seaice AD output.
730      - cosmetic changes: adjust CPP flags and indentation for better
731        legibilty
732    o pkg/autodiff: add mnc-output of adBottomDragFld (code contributed by
733      Chris Wilson)
734    o pkg/gmredi:
735       Add Sub-Meso Eddies parameterisation from Baylor (for now, disabled with TAF),
736       and test it in verification exp. "front_relax.bvp" (update output.bvp.txt)
737    
738    checkpoint63  (2011/07/11)
739    o pkg/exch2:
740     - rename+move: nTiles in W2_EXCH2_PARAMS.h --> exch2_nTiles in W2_EXCH2_TOPOLOGY.h
741     - exch2 version of Cumul-Sum routine: S/R W2_SET_MAP_CUMSUM set up the
742       (2*nTiles)x(nTiles) Cumul-Sum matrix and Master Proc collects all tiles X,Y
743       increments, calculates Cumul-Sum @ tile origin and sends results to each tile.
744    o pkg/diagnostics:
745     - deal with pairs of post-processed diags which are computed together; in
746       particular, re-order list of diags within 1 file to save 2nd computation.
747     - add S/R to compute velocity stream-function (called after velocity-potential
748       calculation) from divergence free transport -> new diagnostics "PsiVEL".
749     - add parameter to select grid-point location where PsiVEL == 0.
750    o eesupp/src:
751       new S/R to calculate cumulated sum on tiled array, corner grid-cell location
752       (specific S/R needed with exch2 topology - for now, just print an error msg)
753  o pkg/shelfice  o pkg/shelfice
754   - Implement friction velocity-dependent transfer coefficients following   - Implement friction velocity-dependent transfer coefficients following
755     Holland and Jenkins, JPO, 1999     Holland and Jenkins, JPO, 1999
# Line 27  o pkg/seaice/seaice_growth.F: Line 773  o pkg/seaice/seaice_growth.F:
773      when SEAICE_ADD_SUBLIMATION_TO_FWBUDGET is used in conjunction with the      when SEAICE_ADD_SUBLIMATION_TO_FWBUDGET is used in conjunction with the
774      non-legacy seaice_solve4temp.      non-legacy seaice_solve4temp.
775    - add diagnostic of the residual sublimation freshwater flux (the freshwater    - add diagnostic of the residual sublimation freshwater flux (the freshwater
776      flux taken from the ocean if the total actual latent heat fluxes exceed      flux taken from the ocean if the total actual latent heat fluxes exceed
777      the maximum)      the maximum)
778    - remove the CPP switch around the *_FWbySublim unit change and move diagnostic    - remove the CPP switch around the *_FWbySublim unit change and move diagnostic
779     fill for SIatmQnt, SIfwSubl, SIatmFW to the end of seaice_growth.F.     fill for SIatmQnt, SIfwSubl, SIatmFW to the end of seaice_growth.F.

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