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revision 1.1537 by mlosch, Tue Nov 29 10:56:03 2011 UTC revision 1.1681 by jmc, Wed Jul 4 20:39:21 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/autodiff:
8      - rename S/R INI_AUTODIFF to AUTODIFF_INIT_VARIA ;
9      - create new header file "AUTODIFF_PARAMS.h" for pkg/autodiff parameters
10        which are now read from new parameter file "data.autodiff" (inAdExact
11        previously in "data", use{KPP/GMRedi/SEAICE}inAdMode previously in data.pkg)
12      - add file "data.autodiff" in all verification/*/input_ad/ directories.
13    o verification/tutorial_tracer_adjsens/
14      - add extra sub-verification which uses "SOM" advection scheme
15        (2nd Order-Moment Advection Scheme, Prather Limiter) with
16          #define GAD_ALLOW_TS_SOM_ADV in GAD_OPTIONS.h
17        and in data:
18          multiDimAdvection=.TRUE.,
19          tempAdvScheme=81,
20          saltAdvScheme=81,
21    
22    checkpoint63o (2012/06/29)
23    o vertical mixing schemes:
24      - remove unused S/R CALC_BUOYANCY (left from branch-atmos merging)
25      - replace computation of density (in Function STATE1, opps_calc.F) by a call
26        to S/R FIND_RHO_SCALAR
27      - pass sigmaR to S/R PP81_CALC, MY82_CALC (but not yet used) and to GGL90_CALC
28        and use it for N^2 calculation in ggl90_calc.F (save 2 density computations);
29        affects output (vermix.ggl90) at truncation level.
30    o testreport:
31      - change adjustment of SIZE.h for mpi+mth testing: preserve enough tiles
32        (nSx,nSy) for the number of threads (from eedata.mth)
33    o model/src:
34      - remove 2nd set of calls at the top of initialise_varia.F (Adjoint part)
35        related to Non_Lin Free-Surf or Bottom-Control (but not longer necessary).
36    o verification/tutorial_tracer_adjsens/
37      - compile with ALLOW_CG2D_NSA
38      - run with nonlinFreeSurf=3
39      - update reference output_adm.txt
40    o tools/genmake2:
41      - add "-DHAVE_NETCDF" to the DEFINES list when NetCDF is available ;
42        refine usePROFILES switching off (only when NetCDF is not available).
43    o verification (atmospheric set-up):
44      - change eosType='IDEALGAS' to eosType='IDEALG' to match variable declaration
45    o pkg/profiles : refine profiles and files handling.
46    o model/src and pkg/ecco : introduce run-time switch usePROFILES.
47    o model/src/the_main_loop.F, forward_step.F and pkg/exf/EXF_OPTIONS.h :
48      - changes to use model/src/the_main_loop.F rather than the ecco version
49        in ecco type adjoint runs.
50    o model/src:
51      - move computation of recip of grid distance & area from INI_MASKS_ETC to INI_GRID
52      - move setting of h0Fac[C,W,S] from INI_LINEAR_PHISURF to INI_MASKS_ETC
53      - update_masks_etc.F: rename SMOOTH*_R4,R8 function to the corresponding type (RS,RL)
54    o model/src:
55      - fix S/R UPDATE_CG2D for ALLOW_DEPTH_CONTROL case (was empty before);
56        update output of test experiment bottom_ctrl_5x5.
57    o pkg/generic_advdiff:
58      - implement vertical bi-harmonic diffusion (for now, only for T & S and
59        only explicitly).
60    o verification/bottom_ctrl_5x5/
61      update reference output (results changed quite some time ago,
62      not sure when; but new reference results look ok in terms of grdchk)
63    o verification/1D_ocean_ice_column/
64      For verification purposes, the exact adjoint rather than an approx.
65      should be used (e.g., to comare against F.D. or TLM).
66      removed autodiff_inadmode*_ad.F routines in code_ad/
67      Update results/ accordingly.
68    o pkg/cal:
69      - change cal_getdate.F so that output date is function of input time only
70        (less ambiguous, not mixed up with input iteration number).
71      - fix calendarDumps for non-zero phase-lag (S/R CAL_TIME2DUMP).
72    o pkg/diagnostics:
73      - implement calendarDumps also for stats-diags
74      - implement calendarDumps also for snap-shot output (negative freq)
75      - for now, ignores calendarDumps if non-zero phase-lag.
76    
77    checkpoint63n (2012/06/04)
78    o model/src:
79      - recompute rSurfW & S to ensure consistent column thickness (needed for rStar)
80        between Sum_k(hFac*drF) and rSurf-rLow, for now only when using pkg/shelfice;
81      - use h0FacC, W & S to compute hFac_surfC, W & S in calc_surf_dr.F (more
82        similar to calc_r_star.F); update results of experiment internal_wave and
83        tutorial_global_oce_in_p (affected @ truncation level).
84    o pkg/shelfice:
85      - add parameterisation of advective-diffusive flux into the ice shelf
86        according to Holland and Jenkins (1999), eq.22-33, as suggested by Jan De Ryd
87      - simply eps3/3a computation
88    o eesupp:
89     - add new CPP option (DISCONNECTED_TILES) to disconnect tiles (no exchange
90       between tiles, just fill-in edges assuming locally periodic subdomain) and
91       add corresponding exchange subroutines (EXCH0);
92     - new CG-solver version (_EX0) for disconnected-tiles special case.
93    o model/src (CG-solvers):
94     - modify Single-Reduction version (CG2D_SR) in case cg2dMaxIters is reached
95       (similar final residual output and max-Iter number as with standard version);
96     - allows to store and use lowest-residual solution (standard & _SR versions);
97     - cleaning up (remove old, commented out code, LETS_MAKE_JAM ...).
98     - by default, also compile CG2D_SR version (define ALLOW_SRCG in CPP_OPTIONS.h)
99    o eesup/src:
100     - global_vec_sum.F cleaning: add a BARRIER ; update comments ; remove ndef
101       ALWAYS_USE_MPI (no longer needed after fixing usingMPI settings - March 2012)
102    o pkg/salt_plume added to lab_sea/input_ad.noseaicedyn
103    
104    checkpoint63m (2012/04/27)
105    o pkg/shelfice:
106     - account for partical cells in surface level below ice-shelf for hydrostatic
107       pressure calculion (set uniformFreeSurfLev to F); update isomip experiments.
108    o ad test experiments:
109     - update and rename to "ad_optfile.local" local AD-optfile specific to a
110       particular adjoint verification experiment (in verification/*/code_ad/)
111    o pkg/seaice & pkg/exf:
112     - Part two of ECCO-CLIVAR code merges.
113       Completes merge of seaice area relax. code.
114       Requires unified CPP option EXF_ALLOW_SEAICE_RELAX
115       to be set in EXF_OPTIONS.h since this pkg controls its I/O
116       (and avoids second CPP option in SEAICE_OPTIONS.h)
117     - change default value of costIceStart & costIceEnd to a valid date.
118     - add snowPrecip to HSNOW in seaice_growth
119    o pkg/ptracers:
120     - move ptracers summary and setup check into separated S/R ; add a check for
121       valid PTRACERS_Iter0 value (error+stop or just warning).
122    o pkg/cal (+ pkg/ecco):
123     - avoid calling a S/R with 2 times the same arg (FWD: unless both are only used
124       as input; and for AD, unless both are not differentiable (e.g., k index)).
125    o model/src:
126     - define internal flag "uniformFreeSurfLev" (=T when free-surface level-index
127       is everywhere k=1) to speed-up some calculations (by pass kSurf reference);
128       temporary set to usingZCoords value (to be changed to F when using shelfice).
129     - hydrostatic pressure: implement partial cell near the surface also for
130       Z-coordinates (for the case where uniformFreeSurfLev=F); replace test on
131       usingZCoords with test on uniformFreeSurfLev where needed (in NonHyd code).
132    o pkg/ctrl/ctrl_init.F:
133     - add a formal parameter to s/r ctrl_init_rec to print
134       xx_$(ctrl_valiable)_file for easier debugging
135     - move call of cal_* routines into the if-block where they are really
136       needed so that xx_$(ctrl_variable)_period can be 0 or -12 without having
137       to specify a startdate
138    o pkg/seaice:
139     - update comments in SEAICE_OPTIONS.h (+ similar update of lab_sea/code and
140       global_ocean.cs32x15/code versions).
141     - turn on seaice Multi-category (in data.seaice, SEAICE_multDim=7) for
142       verification experiment global_ocean.cs32x15.seaice and update results.
143    o pkg/exf:
144     - new S/R EXF_GETFIELD_START to return starting-time of a forcing field
145       (according to useExfYearlyFields).
146    o pkg/cal:
147     - move calendar setting & summary (previously in cal_readparams.F) into new
148       S/R CAL_INIT_FIXED to be called later in the initialisation process, once
149       length of the simulation is set (after SET_PARMS call); This is an attempt
150       to fix Pb when, e.g.: pkg/longstep, modifies the length of the run.
151     - For safety: keep a record of pkg/cal parameter settings status
152               to allow to STOP if one pkg/cal S/R is called too early.
153     - add a stop in all basic pkg/cal subroutines if called before setting is done.
154     - modify cal_getdate.F: stop when nothing was returned;
155       if called with myIter=-1, simply retrun modelBaseDate (1,2 = startDate_1,_2);
156       this allows to remove "cal.h" from seaice_read_parms.F & init_mnc_vars.F.
157    
158    checkpoint63l (2012/04/04)
159    o pkg/bbl:
160      - fix call to FIND_RHO_2D in bbl_calc_rho.F (case multi-tiles per proc);
161        update global_with_exf output.yearly.txt file.
162    o pkg/cal:
163      - start to clean-up cal_set.F ; fix for the case where baseTime is non-zero.
164      - remove 2 unsused and very short (1 line only) functions ;
165      - remove unsused subroutines from AD-Diff list.
166    o model/src:
167      - start to implement clean wait to stop in initialization S/R (config_check.F,
168         packages_check.F, ini_parms.F and pkg/obcs/obcs_check.F + pkg/mypackage)
169    o folowing PRINT_MESSAGE changes:
170      - remove reminder multiple print to the same file (STDOUT) when multi-threads.
171    o pkg/bbl:
172      - modification so it can work with z*
173      - replace deltaT with dTtracerLev(k) for asynchronous time stepping
174      - global_with_exf/input.yearly verification; changes output.yearly.txt
175    o eesupp/src:
176      - PRINT_MESSAGE: use OpenMP critical instruction (similar to PRINT_ERROR);
177        writing to unit 0 (if unit=errorMessageUnit) extended to the case myThid=1
178      - CHECK_THREADS: specific code if using OpenMP threading: improve checking of
179        # of threads across processors (e.g., different env OMP_NUM_THREADS setting)
180      - improve special preliminary call to EESET_PARMS (if eedata is read 2 times).
181      - when using MPI, always set usingMPI=T ; set default accordingly and stop
182        if not consistent.
183      - ALL_PROC_DIE: add a BARRIER after MPI_FINALIZE call ; skip this when thread
184        argument is zero (in case called within single-thread section).
185    o pkg/fizhi:
186        clean-up turbulence cold-start switch: decided in fizhi_init_vars.F, stored
187        in common bloc (fizhi_coms.h) and then passed as argument up to S/R TURBIO.
188    o pkg/exch2:
189      - add argument "updateCorners" to S/R exch2_get_uv_bounds (enable to
190        activate EXCH_IGNORE_CORNERS in vector EXCH S/R).
191      - switch 1rst EXCH call to IGNORE_CORNERS (instead of UPDATE_CORNERS)
192        but keep the 2nd with UPDATE_CORNERS: this prevents overwriting good data
193        with bad ones coming from a not-yet-updated halo.
194        This should fix the problem when sNx <> sNy and GCD(sNx,sNy) < 2*Olx.
195    o pkg/frazil:
196        move FrzForcT diag from frazil_diagnostics_state.F to frazil_calc_rhs.F
197        http://mitgcm.org/pipermail/mitgcm-devel/2012-March/005384.html
198    o model/src/config_check.F: add a check for OLx>sNx/OLy>sNy
199    o verification/lab_sea
200      * #undef SEAICE_EXCLUDE_FOR_EXACT_AD_TESTING
201      * #define ALLOW_SST_CONTROL & ALLOW_SST_CONTROL
202      * nTimeSteps 3 -> 4
203      * changed reference output accordingly
204    o pkg/ctrl:
205      * fix ctrl_get_gen for xx_sst, xx_sss
206    o pkg/fizhi:
207      - fix 2 calls to S/R GRD2MSC (argument igrd) in update_earth_exports.F
208        update results of exp. fizhi-cs-32x32x40 (fail with only 6 digits for cg2d)
209      - by default, use new version of S/R GETPWHERE (#define TRY_NEW_GETPWHERE);
210        fix few out-of-bounds indices in referencing vars (initialise igrd to 1);
211        clean-up fizhi_turb.F (remove unused & uninitialised qdiaglsm array).
212    o pkg/gmredi:
213      - add diagnostic of Redi (main diagnonal) vertical diffusive flux of Temp
214    o pkg/fizhi:
215      - fix few initialisation and multi-tile Pb: aqualev & gridalt now pass the
216        (old)aces open64 tuv test.
217    o pkg/icefront: fix bug and reorder loop in icefront_init_varia.F
218    o pkg/mom_vecinv:
219      - fix 1 loop range in mom_vecinv.F to be like all the other loops which
220        set/update gu,gv/Diss (fix Pb of uninitialised fVerUkp in admom_vecinv
221        with non-lin free-surf).
222    o model/src: move k-loop outside of i/j-loops when (re-)computing R_low
223      in ini/update_masks_etc.F in order to avoid -O3 optimization problems with
224      some compilers (gfortran 4.6.0 on MacOS)
225    o momentum:
226      - separate fVer?(:,:,kUp) & fVer?(:,:,kDown) in argument list of MOM_FLUXFORM
227        & MOM_VECINV subroutines (to help TAF). This fixes Pb of uninitialised
228        fVer?(kUp) in admom_fluxform with non-lin free-surf or bottom control.
229    
230    checkpoint63k (2012/03/17)
231    o model/src:
232       - selectAddFluid (ALLOW_ADDFLUID): add missing term in horizontal momentum
233         flux-form (mom_fluxform.F) and vertical momentum (calc_gw.F) equations.
234       - SOLVE_DIAGONAL: switch default to use adjoinable & vectorized version
235         (#undef SOLVE_DIAGONAL_LOWMEMORY); update output of exp. front_relax.bvp.
236    o model/src: solve_*diagonal.F
237       - replace division with multiplication by inverse (similar to original version)
238         update output of AD exp. global_ocean.90x40x15.
239       - fix pkg/gmredi/gmredi_calc_psi_bvp.F & pkg/ggl90/ggl90_calc.F
240         to enable the use of the vectorized & differentiable solve_tridiagonal.F
241       - test exp. global_ocean.90x40x15/input_ad: switch to advection scheme 20 for
242         vertical advection (to get solve_tridiagonal tested in AD mode).
243    o pkg/seaice: ECCO-CLIVAR merge:
244      1. seaice AREA relaxation
245         * CPP option: SEAICE_ALLOW_AREA_RELAXATION
246         * runtime flag: SEAICE_tauAreaObsRelax
247      2. modified global mean cost imbalance code: CPP option
248          ALLOW_SSH_GLOBMEAN_COST_CONTRIBUTION
249    o another iteration on solve_*diagonal.F
250       Make choices independent of AUTODIFF
251       Default will be the adjoinable vectorized version.
252       Alternative choices are:
253       * non-adjoinable original version with low memory footprint:
254         #define SOLVE_DIAGONAL_LOWMEMORY
255       * still adjoinable but does not vectorize (k as inner-most loop):
256         #define SOLVE_DIAGONAL_KINNER (keeping SOLVE_DIAGONAL_LOWMEMORY undef)
257    o testreport
258     - add option to use a home made wrapper around "make"
259     - remove MITGCM_IEEE env. variable (no longer active)
260    o pkg/shelfice
261     - improve computation of friction velocity for velocity dependent
262       exchange coefficients: include velocities into SHELFICEBoundaryLayer
263       block to average velocities vertically
264     - add TAF store directives for SHI_ALLOW_GAMMAFRICT
265    o Modify diagonal solvers, now three versions (upon request):
266      #ifndef SOLVE_DIAGONAL_AUTODIFF
267        1. default version (dating back a while ago)
268      #else /* def SOLVE_DIAGONAL_AUTODIFF */
269      # ifdef SOLVE_DIAGONAL_KINNER
270        2. adjoinable version with k-innermost loop (G. Forget)
271      # else
272        3. adjoinable vectorized version of 2.
273      # endif
274      #endif /* SOLVE_DIAGONAL_AUTODIFF */
275      All flags are currently set within routines, but could/should be moved to CPP-options.
276      Array bounds for 1. are as before, for 2.,3. cover the entire domain
277      (could be changed for 1. too).
278    o verification/lab_sea (fwd):
279      - update the 4 fwd lab_sea test experiment: no longer SEAICE_GROWTH_LEGACY,
280        use 7 categories (except hb87), new solve4temp params (except salt_plume),
281        constant salinity (=4) or variable salinity (salt_plume) done through
282        SItracer.
283    o pkg/seaice:
284      - rename parameters: SIsalFrac to SEAICE_saltFrac & SIsal0 to SEAICE_salt0;
285      - remove old parameters ( SEAICE_freeze, SEAICEturbFluxFormula, SEAICE_gamma_t,
286         SEAICE_gamma_t_frz, SEAICE_availHeatTaper & SEAICE_availHeatFracFrz)
287        from SEAICE_PARMS.h ; still need to fix seaice_cost_sst.F (broken when
288        SEAICE_freeze got retired) but already better than previously with
289        SEAICE_freeze=123456.7 deg.C;
290      - move setting of facOpenGrow/Melt from SEAICE_INIT_FIXED to SEAICE_READPARMS
291        (safer multi-threaded setting); always set SEAICEuseEVP;
292      - setting of ocean-ice turb. flux coeff: moved from SEAICE_CHECK to
293        SEAICE_READPARMS & SEAICE_INIT_FIXED (this fixes wrong summary report);
294        stop if multiple specifications for the same coeff; make sure default
295        SEAICE_mcPheePiston is compatible with drF(1) & deltaT.
296    o pkg/obcs:
297      - allow to switch to upwind 1rst order advection scheme for the advective
298        flux computation at the open-boundary; disabled for adjoint built.
299    o pkg/ptracers:
300      - rename PTRACERS_RESTART.h -> PTRACERS_START.h
301      - rename ptracers_fields_blocking_exchanges.F -> ptracers_fields_blocking_exch.F
302      - add parameter to decide when to start a tracer; use internal flag to
303        know which tracer to step-forward; switch this internal flag at the top
304        of forward_step.F (new S/R PTRACERS_SWITCH_ONOFF); for now, not enabled
305        for adjoint built.
306    o pkg/seaice:
307      - add SEAICE_SIZE.h anywhere in the code where SEAICE.h is included ;
308      - move MULTDIM declaration and setting from SEAICE.h to SEAICE_SIZE.h ;
309      - keep experiment offline_exf_seaice truly single category (set MULTDIM=1).
310    o pkg/ecco:
311      - fix writing of output file DiagnosCost_ClimSalt/Theta
312        and DiagnosCost_DriftSalt/Theta (if multi-tiles per proc).
313    o pkg/seaice:
314      - add missing initialisation of COR_ICE array in dynsolver.F
315      - merging SEAICE_MULTICATEGORY define and undef cases. Now the same code is
316        compiled either way, and is tested in all exps (multidim was only tested
317        in lab_sea ad before).
318      - cosmetic change to prepare for future addition of ITD. no change to results.
319        no defaults change.
320      - added run time param SEAICE_multDim (7 for SEAICE_MULTICATEGORY, 1 otherwise).
321      - by lack of adequate verification experiments, I further used custom versions
322        of global_ocean.cs32x15 to test multicat or not, with pickup or not. All
323        should be correct.
324      - avoid recomputations in ad.
325    o array initialisation in adjoint mode:
326      1) pkg/mom_common/mom_calc_ke.F:
327        add full array initialisation of KE inside mom_calc_ke.F (ALLOW_AUTODIFF_TAMC):
328        The S/R which calls MOM_CALC_KE initialises KE but in some recomputation
329        part this initialisation is gone, resulting in Floating Point Exception
330        (caught by open64 compiler with debug option).
331      2) model/src/convective_weights.F
332        set output convectCount over the full array range (instead of doing
333        an update): this fix a similar issue when called within recomputation (adjoint)
334        which could by-pass the initialisation (normally done in the caller S/R).
335    o pkg/seaice:
336      - final version of turbulent flux params, as agreed at MIT ice meet:
337           SEAICE_mcPheePiston (default is ~ 0.000875)
338           SEAICE_mcPheeTaper (default is 0.)
339           SEAICE_frazilFrac (defualt is 1.)
340           SEAICE_mcPheeStepFunc (default is false)
341      - changes results at trunction error level
342      - ifdef SEAICE_EXTERNAL_FLUXES, disallow SEAICE_waterAlbedo
343    o added pkg/frazil:
344      - see frazil_description.tex for details
345      - verification experiment is global_with_exf/input.yearly; changes output.yearly.txt
346    o pkg/shelfice/shelfice_thermodynamics.F
347      - fix exponents for velocity dependent exchange coefficients: change
348        from 2/3(=0) to 0.66666666666666667
349      - move computation of velocity dependent exchange coefficients into
350        separate loop, so that it applies to both thermodynamics
351      - move some divisions by constants out of loops
352    
353    checkpoint63j (2012/02/16)
354    o pkg/seaice:
355      - overhaul of seaice_summary.F after feb 2012 clean-up of seaice_growth.F etc.
356      - SItracer:  added run time params, and allow coupling to ocn salinity.
357    o pkg/seaice: remove (almost) all divisions by constants within loops
358      in seaice_growth.F and seaice_solve4temp.F, this changes (only) the cg2d
359      results of global_ocean.cs32x15.seaice from 16 to 11 digits (but only
360      those, caused by 1/QI -> recip_QI) -> update output.seaice.txt,
361      output_adm.seaice_dynmix.txt and also lab_sea: output_adm.evp.txt
362    o pkg/seaice :
363      - simplify McPhee tapering, and allow to use it with SEAICEturbFluxFormula
364        = 1 or 2, using newly added run time parameter SEAICE_availHeatTaper.
365      - fix d_AREAbyATM, d_AREAbyOCN, d_AREAbyICE diags I broke in r1.148.
366      - add permanent SItflux diag that corresponds to TFLUX but includes
367        ice+snow. Hence SItflux-TFLUX should match the ice+snow heat budget.
368      - allow activation/testing of a fix for suspected missing term in
369        ocn-ice heat budget (to be confirmed). To test this, you want to
370        undef SEAICE_DISABLE_HEATCONSFIX, and then set the run time param
371        SEAICEheatConsFix to .TRUE. that also allows the 'SIaaflux' diagnostic.
372      - no change in results, fwd or ad.
373    o global_ocean.cs32x15/results: 3 changes following from the pkg/seaice commit below:
374      - switch to variable freezing point.
375           Results change : cg2d -> 1 digits; ad -> 3-6-6 digits.
376      - bug fix : the sublimation term that was missing is now activated.
377           Results change : cg2d -> 2 digits; ad -> 8-6-6 digits.
378      - bug fix : flooding sign term for SIsal0.NE.0.
379           Result change : cg2d -> 8 digits; ad -> 11-12-9 digits.
380    o pkg/seaice:
381      - unified freezing point treatment : the old SEAICE_VARIABLE_FREEZING_POINT
382        is now the default, and the old default constant freezing point is recovered
383        with SEAICE_tempFrz0    = -1.96,
384             SEAICE_dTempFrz_dS = 0.,
385      - retire SEAICE_freeze (= the old way of specifycing the constant freezing point)
386      - remove ALLOW_SEAICE_FLOODING brackets; run time switch is already there.
387      - bug fix (thanks to M. Losch) : the sublimation term that was missing is now
388        activated. To reproduce old results with this bug define SEAICE_DISABLE_SUBLIM.
389      - bug fix (silly me) : flooding sign term (seaice_growth.F r 1.149line 1211)
390        was wrong for SIsal0.NE.0. Changes cs32x15 results (see above item for detail).
391      - bug fix (thanks to O. Jahn) : area loss for melting  got messed up in
392        seaice_growth r149 for legacy branch (no results change).
393      - introduce SEAICE_CAP_SUBLIM : caps sublimation heat flux in solve4temp (code
394        from I. Fenty).
395      - results did not change except for global_ocean.cs32x15, mostly due to the
396        switch to variable freezing point (see above item for detail).
397    o pkg/thsice:
398      - fix and simplify interface to salt_plume pkg ; diagnose directly amount of
399        seawater freezing in thsice_calc_thickn (not used).
400    o pkg/seaice: turbulent flux term specification via run time params.
401      - replace CPP switches with run time switches to facilitate testing
402      - retired CPPs : MCPHEE_OCEAN_ICE_HEAT_FLUX,
403                       GRADIENT_MIXED_LAYER_TURBULENCE_FACTOR
404      - added runtime parameter : SEAICEturbFluxFormula
405      - move Mcphee constants to SEAICE_PARAMS.h
406      - seaice_readparms.F : read turbulent flux term params (SEAICEturbFluxFormula;
407                 SEAICE_availHeatFrac/Frz, or SEAICE_gamma_t/_frz if apply);
408                 remove seaice_summary call (moved to seaice_init_fixed)
409      - seaice_init_fixed.F : set SEAICE_availHeatFrac/Frz depending on
410        SEAICEturbFluxFormula, and seaice_summary call (moved from seaice_readparms)
411      - seaice_summary.F : add missing report of read turbulent flux term set up
412                           and SITRACER.
413      - seaice_check.F : check range; inform and stop if retired CPPs are used
414                         (incl. SEAICE_AGE).
415      - seaice_growth.F : unified use of SEAICE_availHeatFrac/Frz, without
416             CPP switch, same computation as before for the different options.
417      - change results at the truncation level.
418    o pkg/seaice:
419      - remove un-used parameters LAD & MAX_TICE ; add new run-time parameters:
420        useMaykutSatVapPoly (default=F), postSolvTempIter (default=2) and
421        SEAICE_wetAlbTemp (default=-1e-3). Remove option SEAICE_SOLVE4TEMP_LEGACY.
422      - update verification/*/input*/data.seaice:
423        to reproduce previous results with former #defined SEAICE_SOLVE4TEMP_LEGACY
424        code, set useMaykutSatVapPoly=T & postSolvTempIter=0 ;
425        and to reproduce previous results with former non-SOLVE4TEMP_LEGACY code,
426        set SEAICE_wetAlbTemp=0 & SEAICE_snowThick=0.
427    o pkg/seaice/seaice_solve4temp.F (SOLVE4TEMP_LEGACY):
428      - remove LEGACY code for solving for tsurf (A1,A2,A3) but maintain the same
429        algorithm (same choice: useMaykutPolySatVap=T, postSolvTempIter=0);
430        difference in results only due to machine truncation.
431      - remove MAX_TICE (tsurf is always =< TMELT anyway); keep MIN_TICE if using
432        MaykutPolySatVap; keep MIN_LWDOWN.
433      - adapt SEAICE_MODIFY_GROWTH_ADJ code (untested) to non-legacy formulation.
434      - update output of verification exp. lab_sea (4 fwd: 11 cg2d digits except hb87,
435        + 3 AD: 6 digits except evp) and offline_exf_seaice.seaice (12 digits).
436    o pkg/salt_plume:
437      - isolate saltPlumeFlux array exch into a specific S/R called from
438        do_oceanic_phys.F
439      - add interface to pkg/salt_plume (filling of saltPlumeFlux) in pkg/thsice.
440    o verification:
441      - move untested set-up to MITgcm_contrib/verification_other.
442    o pkg/seaice:
443      - retire old way of SEAICE_AGE. Now replaced with ALLOW_SITRACER.
444    o pkg/seaice:
445      - seaice_solve4temp.F (keeping results unchanged):
446        * add 2 future run-time params to select which saturation vapor pressure
447          formula is used and how post-iteration fluxes are set.
448          Temporary set these 2 params according to option SOLVE4TEMP_LEGACY;
449        * New piece of code (not used) to update surf. atmos. heat flux F_ia using
450          the linearized expression to stay consistent with tsurf finding.
451      - seaice_freedrift.F avoid floating exception in sqrt(y) since y=sqrt(x*x)-x
452        can be < 0.
453    o pkg/seaice/seaice_solve4temp.F (SOLVE4TEMP_LEGACY undef):
454      - remove from F_ia (and from it's derivative dFiDTs1) the contribution of
455        conductive heat flux F_c , and add it explicitly when updating tsurf as
456        solution of: Fc = Fia + d/dT(Fia - Fc) *delta.tsurf
457        so that now F_ia has a consistent meaning through the entire routine.
458        This causes differences at truncation level: update output of fwd exp.
459        global_ocean.cs32x15.seaice.
460    o pkg/seaice:
461      - lots of editing/cleaning in seaice_solve4temp.F + better documentation
462        of arrays, sign/direction of fluxes; no effect on results.
463      - replace hard coded 273.16 (=previous value of celsius2K) by celsius2K
464        in seaice_budget_ocean.F & seaice_solve4temp.F (SOLVE4TEMP_LEGACY part);
465        note: this should have been done before changing celsius2K default.
466      - to keep results unchanged, add back old value of celsius2K in verification
467        exp. input*/data : lab_sea (AD), offline_exf_seaice (fwd+AD) & seaice_obcs
468      - replace hard coded seawater freezing temp in seaice_solve4temp.F (part
469        SOLVE4TEMP_LEGACY) of 271.20 (=previous value of celsius2K + default
470        value of SEAICE_freeze) by celsius2K+SEAICE_freeze so that seawater
471        freezing temp is consistent with value in seaice_growth.F ; this causes
472        differences at machine truncation level: update lab_sea AD output (3/4).
473    o pkg/seaice:
474      - mask (in exf_init_fixed.F) atemp,aqh,evap,precip,runoff,lwflx,areamask
475        and climsst/sss even when using seaice (to prevent calculation that might
476        use SST on land); does not affect any verification exp.
477      - apply mask to taux,tauy (in seaice_get_dynforcing.F); update output
478        of lab_sea.fd & lab_sea.hb87 and global_ocean.cs32x15.seaice_dynmix.
479    o pkg/seaice/seaice_growth.F: add mask to avoid non-zero ice thickness
480      over land (non-legacy code)
481    o vectorize salt_plume package:
482      - add extra code to salt_plume_frac and salt_plume_tendency_apply_s
483      - this code computes plumebk everywhere (also over land), thus requires
484        code to avoid divisions by zero and catch the case of kLev=Nr.
485      - efficiency of salt_plume_frac is still sub-optimal
486    o tools (genmake2):
487      - fix makefile NAME specification (option: -makefile NAME) by adding
488        "-f $MAKEFILE" in few places where it was missing including makedepend
489        command (contribution from Paul).
490    
491    checkpoint63i (2012/01/24)
492    o model/src:
493      - add factorized versions of some EOS code to find_rho.F,
494        define USE_FACTORIZED_EOS to turn it on (default for TARGET_NEC_SX)
495    o model/src:
496      - add celsius2K to namelist PARM01; remove unused recip_rhoNil from PARAMS.h;
497      - change default celsius2K from 273.16 to 273.15
498      - to keep results unchanged, add back old value of celsius2K in verification
499        exp. input*/data : aim.5l_cs, 1D_ocean_ice_column, lab_sea (fwd),
500         global_ocean.cs32x15(seaice) & cpl_aim+ocn(input_atm).
501    o model/src: add a little initialisation trick to find_rho.F and find_alpha.F
502      to make TAF generate vectorizable code
503    o pkg/seaice/seaice_evp.F: add code (copied from CICE) that avoids underflows.
504       Turn on by defining SEAICE_EVP_ELIMINATE_UNDERFLOWS. Most compilers
505       have flags that do this more efficiently.
506    o pkg/diagnostics/diagstats_calc.F
507      - for TARGET_NEC_SX fix the treatment of the scaling factor tmpFac=scaleFact
508    o pkg/obcs (with exch2):
509      - derive OB indices in overlap region from OB-InsideMask (in obcs_init_fixed.F)
510        and remove code (in obcs_readparms.F) which was based on EXCH of indices
511        (through buffer) and did not account for exch2 (e.g., CS-grid) topology.
512    o pkg/exf and seaice exp:
513      - change offline_exf_seaice.seaicetd test exp. to use default DIFF1 value (=0)
514        so that switching off area & heff advection flags does not affect results.
515      - change default EXF_LWDOWN_WITH_EMISSIVITY to #define in EXF_OPTIONS.h
516      - keep exp. seaice_obcs & 1D_ocean_ice_column(ad) unchanged (using #undef
517        EXF_LWDOWN_WITH_EMISSIVITY) and, using pkg/exf default emissivities, update
518        results of verification experiments: 1D_ocean_ice_column(fwd),
519        global_ocean.cs32x15.seaice(fwd+ad) & seaice_dynmix(ad), lab_sea (all 8)
520        and offline_exf_seaice (all 4).
521    o pkg/seaice:
522      - remove array YNEG, RIVER, TMIX (replaced by local var) from common block;
523        remove also areaNm1 & hEffNm1 when SEAICE_GROWTH_LEGACY is undef.
524      - fix bug: areaNm1 & hEffNm1 are needed in seaice_growth (SEAICE_GROWTH_LEGACY)
525        but were not filled when resp. SEAICEadvArea=F & SEAICEadvHeff=F and
526        not multi-dim advection;
527      - fix seaice_growth.F to compile with both SEAICE_GROWTH_LEGACY and
528        SHORTWAVE_HEATING #undef.
529    o optim: make Makefile more robust (?)
530    o pkg/obcs:
531      * fix treatment of obcs_read_pickup for TAF
532    o pkg/shelfice:
533      * add missing initialisation of num_shifwflx
534      * new adjoint verification exp. for isomip
535      * change Prandtl and Schmidt numbers from generic formulations
536        (in terms of model diffus. and visc.) to separate runtime
537        parameters, with Holland and Jenkins (1999) default values.
538    o pkg/exf (interpolation):
539      - extended input field (2 rows) near the N & S poles:
540        * fill in with the symetric value (when even Nb of data in longitude)
541        * add average value at the poles only for scalar quantities ; for vector
542          component interpolation, skip the averaging and keep duplicated values,
543          unless the 2 components have same location (uvInterp=T) in which case
544          interpolate the 2 components together using S/R EXF_INTERP_UV.
545      - new S/R EXF_INTERP_UV to interpolate the 2 components of a vector field
546        together: this allows to account properly for local orientation when
547        averaging at N & S pole.
548      - add CPP option EXF_USE_OLD_INTERP_POLE to recover old results regarding
549        exf-interpolation near N & S poles. Undef by default.
550      - add debug check/print on 1rst iter if debugLevel >=2.
551    o pkg/exf:
552      - change masking flags definition (no longer "parameter"), put them in
553        common block and set them in S/R EXF_INIT_FIXED.
554      - change recognized masking flag from s,u,v to c,w,s since the mask
555        to use (maskC,W,S) depends on position on model grid and has little to
556        do with scalar/vector difference; fix masking if using P-coordinates.
557      - fix masking of wind-stress (was wrong if interpolated or read on A-grid)
558        and update results of exp. global_with_exf (x2).
559      - fix setting of zenith-angle table when SHORTWAVE_HEATING is undef.
560    o pkg/obcs
561      - S/R obcs_calc_stevens: fix a small bug (gammat -> gammas where appropriate)
562    o pkg/exf (interpolation):
563      - assume periodicity in X only if input field cover full longitude range.
564      - improve search for lat. index (supposed to be faster, in ~log2(ny) steps,
565        and should vectorise).
566      - fix input lat of the 2 added row (in case we provide N.pole data).
567    
568    checkpoint63h (2011/12/30)
569    o pkg/seaice:
570      - change declaration of UVM from _RL to _RS in order to get B-grid
571        uIce,vIce monitor when _RS = real*4
572    o pkg/offline:
573      - new S/R OFFLINE_RESET_PARMS for resetting main-model params (switch off flags);
574      - compute vertical velocity if not read from file (switch on exactConserv
575        & staggerTimeStep);
576      - fix output of ptracer monitor iter & time for default PTRACERS_monitorFreq.
577    o verification:
578      - update grid-files (in tutorial_held_suarez_cs/input and fizhi-cs-32x32x40/input)
579        with grid-angle generated using "utils/matlab/cs_grid/cubeCalcAngle.m":
580        fix Pb in yG definition @ 2 missing corners (previously yG was averaged);
581      - update output of exp. global_ocean.cs32x15.viscA4 after changing
582        grid-file angles (used here for coriolis-3d);
583      - remove (or gzip) few files not needed to run fizhi-cs experiments.
584    o pkg/exf (vector interpolation):
585      - rotate vector component toward local grid-axis orientation using grid-angles
586        (stored in GRID.h) instead of locally computed rotation angle; keep old code
587        available with exf option EXF_USE_OLD_VEC_ROTATION (undef by default).
588    o pkg/seaice:
589      - allow to compile with exf options ALLOW_ATM_TEMP or ALLOW_DOWNWARD_RADIATION
590        undefined. Fix and remove the stop when ALLOW_RUNOFF is undefined.
591    o pkg/PKG_OPTIONS.h files:
592      - move #include "CPP_OPTIONS.h" just after #include "PACKAGES_CONFIG.h",
593        outside of the #ifdef ALLOW_THISPKG / #endif block.
594      - update verification/*/code/PKG_OPTIONS.h files.
595    o add a verification experiment (offline_exf_seaice/input.seaice) that test
596      the B-grid LSOR solver
597    o pkg/seaice: sort out emissivity and long wave radiation step 2:
598      - add emissivity for snow and ice as new run-time parameters
599        (unfortunately) that default to the corresponding exf values; this
600        changes results in most verification experiments so that for backward
601        compatibility these parameter have to be set explicitly to inconsistent
602        values (ugly);
603      - the exf-flag EXF_LWDOWN_WITH_EMISSIVITY then gets rid off the hard-wired
604        emissivities of 0.97 associated with lwdownloc in S/R seaice_solve4temp
605        until we agree how to handle this bug properly
606    o pkg/exf (interpolation):
607      - add a set of run-time param ({inputfield}_interpMethod), one for
608        each interpolated input field, to select the interpolation method
609        with a value of zero switching off the interpolation;
610      - print interpolation parameters to standard output;
611      - refine exf_check.F accordingly ; stop if USE_NO_INTERP_RUNOFF is defined
612        (to use instead runoff_interpMethod=0 in data.exf).
613      - simplify default setting of interpolation parameters (for all fields,
614        set position to match model grid cell-center position, leading to trivial
615        interpolation in case of regular Lat-Lon grid) and fix for the case of
616        non-uniform delY.
617    o pkg/exf/exf_radiation.F: add the factor ocean_emissivity to lwdown, for
618       within #ifdef EXF_LWDOWN_WITH_EMISSIVITY/#endif. Unless ocean_emissivity=1.
619       this factor is absolutely required, because the lw exitance (= out-going
620       long wave radiation) is emissivity*stefanBoltzmann*T^4 + rho*lwdown,
621       where the reflectivity rho = 1-emissivity for conservation reasons. Once
622       this is established, we can remove the CPP-Flag (if we want to).
623    o pkg/seaice:
624      - qualify a stop statement in S/R seaice_check: EXF_READ_EVAP and
625        ALLOW_BULKFORMULAE are only required if SEAICE_EXTERNAL_FLUXES is defined
626      - sort out emissivity and long wave radiation, step 1: make SEAICE_emissivity
627        what the name implies (and not emissivity*BoltzmannConstant), this means
628        the old default value of 5.5e-8 now means
629        5.5e-8/5.670e-8 = 0.97001763668430343479 as ocean_emissivity in
630        S/R exf_readparms
631      - FV-discretization of the B-grid LSOR solver, turn on with
632        SEAICE_LSRBNEW. This new solver also involves a slight re-organization
633        of the calling routine dynsolver, so that B and C-grid code look a
634        little more alike.
635      - fix index bugs in ostres.F (B-grid code)
636    o pkg/seaice/seaice_ocean_budget.F: change (unused) code to make it look better
637    o pkg/seaice/seaice_readparms.F: make ocean_emissivity*stefanBoltzmann the
638      default for SEAICE_emissivity, if useEXF; requires setting a wrong
639      parameter value in global_ocean.cs32x15/input.seaice/data.seaice for
640      backward compatiblity
641    o model/src: use sigmaR in calc_ivdc
642    
643    checkpoint63g (2011/12/16)
644    o pkg/seaice/seaice_growth.F:
645      fix heat conservation of the coupled ocean-seaice system.
646      when SEAICE_HEAT_CONSERV_FIX is defined, the mismatch of
647      solid vs liquid water treatment is resolved via QNET.
648    o pkg/seaice/seaice_growth.F:
649      add missing term for sublimation in saltFlux, which was breaking conservation.
650    o pkg/seaice/seaice_model.F:
651      Remove this patholigical case treatment in evolution branch,
652      where it is un-necessary and breaks conservation.
653      Update global_ocean.cs32x15/results accordingly for
654      output.seaice.txt output_adm.seaice.txt and output_adm.seaice_dynmix.txt
655    o model/src:
656      useRealFreshWaterFlux: remove masking of EmPmP (using maskInC) in
657      external_forcing_surf.F and apply mask directly in S/R SOLVE_FOR_PRESSURE.
658    o pkg/obcs:
659      modify Stevens boundary conditions so that S/R obcs_calc_stevens computes
660      tendency for temperature and salinity that is then applied to update
661      theta and salt in S/R obcs_apply_ts; this requires proper masking of all
662      horizontal advection and diffusion contributions on the boundary (in
663      S/Rs gad_advection, gad_calc_rhs, gmredi_rtransport, gmredi_calc_diff), and
664      removing the mask in S/R timestep_tracer. The advantage of this approach is
665      that the updated tracer values include contributions from the surface
666      forcing and vertical diffusion.
667      This modification changes exp4.stevens because of vertical diffusion.
668    o model/src:
669      change non-curvilinear grid setting to also work with exch2 + blank tiles:
670      - move delX,delY to new header file (SET_GRID.h) and adjust length to 1rst
671        face dimensions.
672      - new S/R INI_LOCAL_GRID to define model tile-local grid (using same units
673        as delX,delY) and called from S/R INI_CARTESIAN_GRID, INI_CYLINDER_GRID
674        and INI_SPHERICAL_POLAR_GRID.
675      change test-experiment global_ocean.90x40x15:
676      - split the domain in many more tiles (9x4 tiles of 10x10 each);
677      - switch to exch2 and remove 1 blank-tile (but only for MPI test).
678      - update results of both test (std & dwnslp).
679    o pkg/diagnostics/diagstat_calc.F: fix problem with non-initialised halos in
680       tmp-fields for TARGET_NEC_SX at the cost of extra loops and less vectorisation
681    o model/src:
682      - take sigma-coords related code out of update_etah.F into new S/R UPDATE_ETAWS
683        and fix initialisation when using sigma-coords.
684    o model/src:
685     - improve Gael's changes from Jan 14, 2011 "addition of an 'update' of hfacc etc.
686       to their current value at the beginning of forward_step.F": add a new run-time
687       switch "doResetHFactors" (default=false) and use it to do (or not) the resetting.
688     - set doResetHFactors=T in the following test exp:
689        global_ocean.90x40x15/input (rStar) & input.dwnslp (linFS),
690        global_ocean.cs32x15/input.seaice (rStar), hs94.cs-32x32x5/input.impIGW (linFS)
691        and tutorial_global_oce_in_p (nonLinFS in p)
692    o pkg/ecco
693      - added IES cost term
694    o verification/advect_xz
695      - scale down the depth by 1/100 (from 200 km to just 2.km)
696      - add secondary test using divergent flow, r-star and implicit vertical advection.
697      - add note (check_conserve_TS.txt) and matlab script to check global
698        conservation of T & S with NonLin-FreeSurf and Adams-Bashforth.
699    o pkg/rbcs:
700      - add missing relaxUFile & relaxVFile in namelist (in rbcs_readparms.F).
701    o pkg/obcs (Stevens BCs):
702      - fix various problems in the phase speed computations of the Stevens
703        boundary conditions:
704        - sign error for western and southern boundaries,
705        - time tendencies were underestimated by factor of dTracerLev and some just
706          zero (for multidim advection schemes) -> now estimate time tendencies
707          from difference between previous (n) time level and the one before (n-1);
708          this requires storing a field per tracer per boundary, also in the pickup
709          files.
710        - replace deltaTmom in cflMer/Zon computation with dTracerLev
711        - set default phase velocity to cflMer/Zon
712      - update verification experiment exp4.stevens
713    o pkg/generic_advdiff (implicit_r):
714      - fix implicit vertical advection conservation with AB and/or NonLin-FreeSurf
715        (remove Tr*d/dz(w) in gad_implicit_r.F and add it in gad_calc_rhs.F);
716      - fix implicit vertical diffusion or advection with NonLin FreeSurf
717        (was using current recip_hFacC instead of future recip_hFacC): set future
718        recip_hFac in thermodynamics.F and pass & use it in all vertical implicit
719        solver S/R ;
720      - fill diagnostics of vertical advective fluxes (computed from tendency)
721        when using implicit vert. advection;
722      - update output of exp that uses NonLin-FreeSurf & implicit vertical diffusion:
723         global_ocean.90x40x15 (fwd+AD), global_ocean.cs32x15 (4 fwd +4 AD),
724         tutorial_global_oce_in_p (fwd), tutorial_tracer_adjsens (AD)
725         and cpl_aim+ocn (used in ocean); to be fixed: bottom_ctrl_5x5.
726    o pkg/diagnostics:
727      - add diags for T & S tendency which goes through Adams-Bashforth.
728    
729    checkpoint63f (2011/11/30)
730  o pkg/obcs/obcs_calc_stevens.F:  o pkg/obcs/obcs_calc_stevens.F:
731      - join some loops to reduce number of if-statements
732    - fix a bug in code for northern and southern boundaries.    - fix a bug in code for northern and southern boundaries.
733  o pkg/seaice/seaice_init_varia.F  o pkg/seaice/seaice_init_varia.F
734    - undo resetting UVM=0 that has slipped in unnoticed in r1.49 and    - undo resetting UVM=0 that has slipped in unnoticed in r1.49 and
735      caused zero ice-velocities for the B-grid code      caused zero ice-velocities for the B-grid code
736  o pkg/seaice/seaice_init_fixed.F  o pkg/seaice/seaice_init_fixed.F
737    - fix a bug in the initialisation of the second metric terms    - fix a bug in the initialisation of the second metric terms
738      k2AtC and k2AtZ: k2AtC was set to the value of k2AtZ and k2AtZ was 0.      k2AtC and k2AtZ: k2AtC was set to the value of k2AtZ and k2AtZ was 0.
739    - this affects all seaice configurations with useCurviLinearGrid = .true.    - this affects all seaice configurations with useCurviLinearGrid = .true.
740      and SEAICEuseDynamics = .true. (default) and SEAICEuseMetricTerms      and SEAICEuseDynamics = .true. (default) and SEAICEuseMetricTerms
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