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revision 1.1391 by mlosch, Wed Mar 9 16:18:06 2011 UTC revision 1.1652 by jmc, Wed Apr 18 22:07:28 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/ctrl/ctrl_get_gen_rec.F: catch the case of xx_genperiod=0.  o pkg/ptracers:
8     - move ptracers summary and setup check into separated S/R ; add a check for
9       valid PTRACERS_Iter0 value (error+stop or just warning).
10    o pkg/cal (+ pkg/ecco):
11     - avoid calling a S/R with 2 times the same arg (FWD: unless both are only used
12       as input; and for AD, unless both are not differentiable (e.g., k index)).
13    o model/src:
14     - define internal flag "uniformFreeSurfLev" (=T when free-surface level-index
15       is everywhere k=1) to speed-up some calculations (by pass kSurf reference);
16       temporary set to usingZCoords value (to be changed to F when using shelfice).
17     - hydrostatic pressure: implement partial cell near the surface also for
18       Z-coordinates (for the case where uniformFreeSurfLev=F); replace test on
19       usingZCoords with test on uniformFreeSurfLev where needed (in NonHyd code).
20    o pkg/ctrl/ctrl_init.F:
21     - add a formal parameter to s/r ctrl_init_rec to print
22       xx_$(ctrl_valiable)_file for easier debugging
23     - move call of cal_* routines into the if-block where they are really
24       needed so that xx_$(ctrl_variable)_period can be 0 or -12 without having
25       to specify a startdate
26    o pkg/seaice:
27     - update comments in SEAICE_OPTIONS.h (+ similar update of lab_sea/code and
28       global_ocean.cs32x15/code versions).
29     - turn on seaice Multi-category (in data.seaice, SEAICE_multDim=7) for
30       verification experiment global_ocean.cs32x15.seaice and update results.
31    o pkg/exf:
32     - new S/R EXF_GETFIELD_START to return starting-time of a forcing field
33       (according to useExfYearlyFields).
34    o pkg/cal:
35     - move calendar setting & summary (previously in cal_readparams.F) into new
36       S/R CAL_INIT_FIXED to be called later in the initialisation process, once
37       length of the simulation is set (after SET_PARMS call); This is an attempt
38       to fix Pb when, e.g.: pkg/longstep, modifies the length of the run.
39     - For safety: keep a record of pkg/cal parameter settings status
40               to allow to STOP if one pkg/cal S/R is called too early.
41     - add a stop in all basic pkg/cal subroutines if called before setting is done.
42     - modify cal_getdate.F: stop when nothing was returned;
43       if called with myIter=-1, simply retrun modelBaseDate (1,2 = startDate_1,_2);
44       this allows to remove "cal.h" from seaice_read_parms.F & init_mnc_vars.F.
45    
46    checkpoint63l (2012/04/04)
47    o pkg/bbl:
48      - fix call to FIND_RHO_2D in bbl_calc_rho.F (case multi-tiles per proc);
49        update global_with_exf output.yearly.txt file.
50    o pkg/cal:
51      - start to clean-up cal_set.F ; fix for the case where baseTime is non-zero.
52      - remove 2 unsused and very short (1 line only) functions ;
53      - remove unsused subroutines from AD-Diff list.
54    o model/src:
55      - start to implement clean wait to stop in initialization S/R (config_check.F,
56         packages_check.F, ini_parms.F and pkg/obcs/obcs_check.F + pkg/mypackage)
57    o folowing PRINT_MESSAGE changes:
58      - remove reminder multiple print to the same file (STDOUT) when multi-threads.
59    o pkg/bbl:
60      - modification so it can work with z*
61      - replace deltaT with dTtracerLev(k) for asynchronous time stepping
62      - global_with_exf/input.yearly verification; changes output.yearly.txt
63    o eesupp/src:
64      - PRINT_MESSAGE: use OpenMP critical instruction (similar to PRINT_ERROR);
65        writing to unit 0 (if unit=errorMessageUnit) extended to the case myThid=1
66      - CHECK_THREADS: specific code if using OpenMP threading: improve checking of
67        # of threads across processors (e.g., different env OMP_NUM_THREADS setting)
68      - improve special preliminary call to EESET_PARMS (if eedata is read 2 times).
69      - when using MPI, always set usingMPI=T ; set default accordingly and stop
70        if not consistent.
71      - ALL_PROC_DIE: add a BARRIER after MPI_FINALIZE call ; skip this when thread
72        argument is zero (in case called within single-thread section).
73    o pkg/fizhi:
74        clean-up turbulence cold-start switch: decided in fizhi_init_vars.F, stored
75        in common bloc (fizhi_coms.h) and then passed as argument up to S/R TURBIO.
76    o pkg/exch2:
77      - add argument "updateCorners" to S/R exch2_get_uv_bounds (enable to
78        activate EXCH_IGNORE_CORNERS in vector EXCH S/R).
79      - switch 1rst EXCH call to IGNORE_CORNERS (instead of UPDATE_CORNERS)
80        but keep the 2nd with UPDATE_CORNERS: this prevents overwriting good data
81        with bad ones coming from a not-yet-updated halo.
82        This should fix the problem when sNx <> sNy and GCD(sNx,sNy) < 2*Olx.
83    o pkg/frazil:
84        move FrzForcT diag from frazil_diagnostics_state.F to frazil_calc_rhs.F
85        http://mitgcm.org/pipermail/mitgcm-devel/2012-March/005384.html
86    o model/src/config_check.F: add a check for OLx>sNx/OLy>sNy
87    o verification/lab_sea
88      * #undef SEAICE_EXCLUDE_FOR_EXACT_AD_TESTING
89      * #define ALLOW_SST_CONTROL & ALLOW_SST_CONTROL
90      * nTimeSteps 3 -> 4
91      * changed reference output accordingly
92    o pkg/ctrl:
93      * fix ctrl_get_gen for xx_sst, xx_sss
94    o pkg/fizhi:
95      - fix 2 calls to S/R GRD2MSC (argument igrd) in update_earth_exports.F
96        update results of exp. fizhi-cs-32x32x40 (fail with only 6 digits for cg2d)
97      - by default, use new version of S/R GETPWHERE (#define TRY_NEW_GETPWHERE);
98        fix few out-of-bounds indices in referencing vars (initialise igrd to 1);
99        clean-up fizhi_turb.F (remove unused & uninitialised qdiaglsm array).
100    o pkg/gmredi:
101      - add diagnostic of Redi (main diagnonal) vertical diffusive flux of Temp
102    o pkg/fizhi:
103      - fix few initialisation and multi-tile Pb: aqualev & gridalt now pass the
104        (old)aces open64 tuv test.
105    o pkg/icefront: fix bug and reorder loop in icefront_init_varia.F
106    o pkg/mom_vecinv:
107      - fix 1 loop range in mom_vecinv.F to be like all the other loops which
108        set/update gu,gv/Diss (fix Pb of uninitialised fVerUkp in admom_vecinv
109        with non-lin free-surf).
110    o model/src: move k-loop outside of i/j-loops when (re-)computing R_low
111      in ini/update_masks_etc.F in order to avoid -O3 optimization problems with
112      some compilers (gfortran 4.6.0 on MacOS)
113    o momentum:
114      - separate fVer?(:,:,kUp) & fVer?(:,:,kDown) in argument list of MOM_FLUXFORM
115        & MOM_VECINV subroutines (to help TAF). This fixes Pb of uninitialised
116        fVer?(kUp) in admom_fluxform with non-lin free-surf or bottom control.
117    
118    checkpoint63k (2012/03/17)
119    o model/src:
120       - selectAddFluid (ALLOW_ADDFLUID): add missing term in horizontal momentum
121         flux-form (mom_fluxform.F) and vertical momentum (calc_gw.F) equations.
122       - SOLVE_DIAGONAL: switch default to use adjoinable & vectorized version
123         (#undef SOLVE_DIAGONAL_LOWMEMORY); update output of exp. front_relax.bvp.
124    o model/src: solve_*diagonal.F
125       - replace division with multiplication by inverse (similar to original version)
126         update output of AD exp. global_ocean.90x40x15.
127       - fix pkg/gmredi/gmredi_calc_psi_bvp.F & pkg/ggl90/ggl90_calc.F
128         to enable the use of the vectorized & differentiable solve_tridiagonal.F
129       - test exp. global_ocean.90x40x15/input_ad: switch to advection scheme 20 for
130         vertical advection (to get solve_tridiagonal tested in AD mode).
131    o pkg/seaice: ECCO-CLIVAR merge:
132      1. seaice AREA relaxation
133         * CPP option: SEAICE_ALLOW_AREA_RELAXATION
134         * runtime flag: SEAICE_tauAreaObsRelax
135      2. modified global mean cost imbalance code: CPP option
136          ALLOW_SSH_GLOBMEAN_COST_CONTRIBUTION
137    o another iteration on solve_*diagonal.F
138       Make choices independent of AUTODIFF
139       Default will be the adjoinable vectorized version.
140       Alternative choices are:
141       * non-adjoinable original version with low memory footprint:
142         #define SOLVE_DIAGONAL_LOWMEMORY
143       * still adjoinable but does not vectorize (k as inner-most loop):
144         #define SOLVE_DIAGONAL_KINNER (keeping SOLVE_DIAGONAL_LOWMEMORY undef)
145    o testreport
146     - add option to use a home made wrapper around "make"
147     - remove MITGCM_IEEE env. variable (no longer active)
148    o pkg/shelfice
149     - improve computation of friction velocity for velocity dependent
150       exchange coefficients: include velocities into SHELFICEBoundaryLayer
151       block to average velocities vertically
152     - add TAF store directives for SHI_ALLOW_GAMMAFRICT
153    o Modify diagonal solvers, now three versions (upon request):
154      #ifndef SOLVE_DIAGONAL_AUTODIFF
155        1. default version (dating back a while ago)
156      #else /* def SOLVE_DIAGONAL_AUTODIFF */
157      # ifdef SOLVE_DIAGONAL_KINNER
158        2. adjoinable version with k-innermost loop (G. Forget)
159      # else
160        3. adjoinable vectorized version of 2.
161      # endif
162      #endif /* SOLVE_DIAGONAL_AUTODIFF */
163      All flags are currently set within routines, but could/should be moved to CPP-options.
164      Array bounds for 1. are as before, for 2.,3. cover the entire domain
165      (could be changed for 1. too).
166    o verification/lab_sea (fwd):
167      - update the 4 fwd lab_sea test experiment: no longer SEAICE_GROWTH_LEGACY,
168        use 7 categories (except hb87), new solve4temp params (except salt_plume),
169        constant salinity (=4) or variable salinity (salt_plume) done through
170        SItracer.
171    o pkg/seaice:
172      - rename parameters: SIsalFrac to SEAICE_saltFrac & SIsal0 to SEAICE_salt0;
173      - remove old parameters ( SEAICE_freeze, SEAICEturbFluxFormula, SEAICE_gamma_t,
174         SEAICE_gamma_t_frz, SEAICE_availHeatTaper & SEAICE_availHeatFracFrz)
175        from SEAICE_PARMS.h ; still need to fix seaice_cost_sst.F (broken when
176        SEAICE_freeze got retired) but already better than previously with
177        SEAICE_freeze=123456.7 deg.C;
178      - move setting of facOpenGrow/Melt from SEAICE_INIT_FIXED to SEAICE_READPARMS
179        (safer multi-threaded setting); always set SEAICEuseEVP;
180      - setting of ocean-ice turb. flux coeff: moved from SEAICE_CHECK to
181        SEAICE_READPARMS & SEAICE_INIT_FIXED (this fixes wrong summary report);
182        stop if multiple specifications for the same coeff; make sure default
183        SEAICE_mcPheePiston is compatible with drF(1) & deltaT.
184    o pkg/obcs:
185      - allow to switch to upwind 1rst order advection scheme for the advective
186        flux computation at the open-boundary; disabled for adjoint built.
187    o pkg/ptracers:
188      - rename PTRACERS_RESTART.h -> PTRACERS_START.h
189      - rename ptracers_fields_blocking_exchanges.F -> ptracers_fields_blocking_exch.F
190      - add parameter to decide when to start a tracer; use internal flag to
191        know which tracer to step-forward; switch this internal flag at the top
192        of forward_step.F (new S/R PTRACERS_SWITCH_ONOFF); for now, not enabled
193        for adjoint built.
194    o pkg/seaice:
195      - add SEAICE_SIZE.h anywhere in the code where SEAICE.h is included ;
196      - move MULTDIM declaration and setting from SEAICE.h to SEAICE_SIZE.h ;
197      - keep experiment offline_exf_seaice truly single category (set MULTDIM=1).
198    o pkg/ecco:
199      - fix writing of output file DiagnosCost_ClimSalt/Theta
200        and DiagnosCost_DriftSalt/Theta (if multi-tiles per proc).
201    o pkg/seaice:
202      - add missing initialisation of COR_ICE array in dynsolver.F
203      - merging SEAICE_MULTICATEGORY define and undef cases. Now the same code is
204        compiled either way, and is tested in all exps (multidim was only tested
205        in lab_sea ad before).
206      - cosmetic change to prepare for future addition of ITD. no change to results.
207        no defaults change.
208      - added run time param SEAICE_multDim (7 for SEAICE_MULTICATEGORY, 1 otherwise).
209      - by lack of adequate verification experiments, I further used custom versions
210        of global_ocean.cs32x15 to test multicat or not, with pickup or not. All
211        should be correct.
212      - avoid recomputations in ad.
213    o array initialisation in adjoint mode:
214      1) pkg/mom_common/mom_calc_ke.F:
215        add full array initialisation of KE inside mom_calc_ke.F (ALLOW_AUTODIFF_TAMC):
216        The S/R which calls MOM_CALC_KE initialises KE but in some recomputation
217        part this initialisation is gone, resulting in Floating Point Exception
218        (caught by open64 compiler with debug option).
219      2) model/src/convective_weights.F
220        set output convectCount over the full array range (instead of doing
221        an update): this fix a similar issue when called within recomputation (adjoint)
222        which could by-pass the initialisation (normally done in the caller S/R).
223    o pkg/seaice:
224      - final version of turbulent flux params, as agreed at MIT ice meet:
225           SEAICE_mcPheePiston (default is ~ 0.000875)
226           SEAICE_mcPheeTaper (default is 0.)
227           SEAICE_frazilFrac (defualt is 1.)
228           SEAICE_mcPheeStepFunc (default is false)
229      - changes results at trunction error level
230      - ifdef SEAICE_EXTERNAL_FLUXES, disallow SEAICE_waterAlbedo
231    o added pkg/frazil:
232      - see frazil_description.tex for details
233      - verification experiment is global_with_exf/input.yearly; changes output.yearly.txt
234    o pkg/shelfice/shelfice_thermodynamics.F
235      - fix exponents for velocity dependent exchange coefficients: change
236        from 2/3(=0) to 0.66666666666666667
237      - move computation of velocity dependent exchange coefficients into
238        separate loop, so that it applies to both thermodynamics
239      - move some divisions by constants out of loops
240    
241    checkpoint63j (2012/02/16)
242    o pkg/seaice:
243      - overhaul of seaice_summary.F after feb 2012 clean-up of seaice_growth.F etc.
244      - SItracer:  added run time params, and allow coupling to ocn salinity.
245    o pkg/seaice: remove (almost) all divisions by constants within loops
246      in seaice_growth.F and seaice_solve4temp.F, this changes (only) the cg2d
247      results of global_ocean.cs32x15.seaice from 16 to 11 digits (but only
248      those, caused by 1/QI -> recip_QI) -> update output.seaice.txt,
249      output_adm.seaice_dynmix.txt and also lab_sea: output_adm.evp.txt
250    o pkg/seaice :
251      - simplify McPhee tapering, and allow to use it with SEAICEturbFluxFormula
252        = 1 or 2, using newly added run time parameter SEAICE_availHeatTaper.
253      - fix d_AREAbyATM, d_AREAbyOCN, d_AREAbyICE diags I broke in r1.148.
254      - add permanent SItflux diag that corresponds to TFLUX but includes
255        ice+snow. Hence SItflux-TFLUX should match the ice+snow heat budget.
256      - allow activation/testing of a fix for suspected missing term in
257        ocn-ice heat budget (to be confirmed). To test this, you want to
258        undef SEAICE_DISABLE_HEATCONSFIX, and then set the run time param
259        SEAICEheatConsFix to .TRUE. that also allows the 'SIaaflux' diagnostic.
260      - no change in results, fwd or ad.
261    o global_ocean.cs32x15/results: 3 changes following from the pkg/seaice commit below:
262      - switch to variable freezing point.
263           Results change : cg2d -> 1 digits; ad -> 3-6-6 digits.
264      - bug fix : the sublimation term that was missing is now activated.
265           Results change : cg2d -> 2 digits; ad -> 8-6-6 digits.
266      - bug fix : flooding sign term for SIsal0.NE.0.
267           Result change : cg2d -> 8 digits; ad -> 11-12-9 digits.
268    o pkg/seaice:
269      - unified freezing point treatment : the old SEAICE_VARIABLE_FREEZING_POINT
270        is now the default, and the old default constant freezing point is recovered
271        with SEAICE_tempFrz0    = -1.96,
272             SEAICE_dTempFrz_dS = 0.,
273      - retire SEAICE_freeze (= the old way of specifycing the constant freezing point)
274      - remove ALLOW_SEAICE_FLOODING brackets; run time switch is already there.
275      - bug fix (thanks to M. Losch) : the sublimation term that was missing is now
276        activated. To reproduce old results with this bug define SEAICE_DISABLE_SUBLIM.
277      - bug fix (silly me) : flooding sign term (seaice_growth.F r 1.149line 1211)
278        was wrong for SIsal0.NE.0. Changes cs32x15 results (see above item for detail).
279      - bug fix (thanks to O. Jahn) : area loss for melting  got messed up in
280        seaice_growth r149 for legacy branch (no results change).
281      - introduce SEAICE_CAP_SUBLIM : caps sublimation heat flux in solve4temp (code
282        from I. Fenty).
283      - results did not change except for global_ocean.cs32x15, mostly due to the
284        switch to variable freezing point (see above item for detail).
285    o pkg/thsice:
286      - fix and simplify interface to salt_plume pkg ; diagnose directly amount of
287        seawater freezing in thsice_calc_thickn (not used).
288    o pkg/seaice: turbulent flux term specification via run time params.
289      - replace CPP switches with run time switches to facilitate testing
290      - retired CPPs : MCPHEE_OCEAN_ICE_HEAT_FLUX,
291                       GRADIENT_MIXED_LAYER_TURBULENCE_FACTOR
292      - added runtime parameter : SEAICEturbFluxFormula
293      - move Mcphee constants to SEAICE_PARAMS.h
294      - seaice_readparms.F : read turbulent flux term params (SEAICEturbFluxFormula;
295                 SEAICE_availHeatFrac/Frz, or SEAICE_gamma_t/_frz if apply);
296                 remove seaice_summary call (moved to seaice_init_fixed)
297      - seaice_init_fixed.F : set SEAICE_availHeatFrac/Frz depending on
298        SEAICEturbFluxFormula, and seaice_summary call (moved from seaice_readparms)
299      - seaice_summary.F : add missing report of read turbulent flux term set up
300                           and SITRACER.
301      - seaice_check.F : check range; inform and stop if retired CPPs are used
302                         (incl. SEAICE_AGE).
303      - seaice_growth.F : unified use of SEAICE_availHeatFrac/Frz, without
304             CPP switch, same computation as before for the different options.
305      - change results at the truncation level.
306    o pkg/seaice:
307      - remove un-used parameters LAD & MAX_TICE ; add new run-time parameters:
308        useMaykutSatVapPoly (default=F), postSolvTempIter (default=2) and
309        SEAICE_wetAlbTemp (default=-1e-3). Remove option SEAICE_SOLVE4TEMP_LEGACY.
310      - update verification/*/input*/data.seaice:
311        to reproduce previous results with former #defined SEAICE_SOLVE4TEMP_LEGACY
312        code, set useMaykutSatVapPoly=T & postSolvTempIter=0 ;
313        and to reproduce previous results with former non-SOLVE4TEMP_LEGACY code,
314        set SEAICE_wetAlbTemp=0 & SEAICE_snowThick=0.
315    o pkg/seaice/seaice_solve4temp.F (SOLVE4TEMP_LEGACY):
316      - remove LEGACY code for solving for tsurf (A1,A2,A3) but maintain the same
317        algorithm (same choice: useMaykutPolySatVap=T, postSolvTempIter=0);
318        difference in results only due to machine truncation.
319      - remove MAX_TICE (tsurf is always =< TMELT anyway); keep MIN_TICE if using
320        MaykutPolySatVap; keep MIN_LWDOWN.
321      - adapt SEAICE_MODIFY_GROWTH_ADJ code (untested) to non-legacy formulation.
322      - update output of verification exp. lab_sea (4 fwd: 11 cg2d digits except hb87,
323        + 3 AD: 6 digits except evp) and offline_exf_seaice.seaice (12 digits).
324    o pkg/salt_plume:
325      - isolate saltPlumeFlux array exch into a specific S/R called from
326        do_oceanic_phys.F
327      - add interface to pkg/salt_plume (filling of saltPlumeFlux) in pkg/thsice.
328    o verification:
329      - move untested set-up to MITgcm_contrib/verification_other.
330    o pkg/seaice:
331      - retire old way of SEAICE_AGE. Now replaced with ALLOW_SITRACER.
332    o pkg/seaice:
333      - seaice_solve4temp.F (keeping results unchanged):
334        * add 2 future run-time params to select which saturation vapor pressure
335          formula is used and how post-iteration fluxes are set.
336          Temporary set these 2 params according to option SOLVE4TEMP_LEGACY;
337        * New piece of code (not used) to update surf. atmos. heat flux F_ia using
338          the linearized expression to stay consistent with tsurf finding.
339      - seaice_freedrift.F avoid floating exception in sqrt(y) since y=sqrt(x*x)-x
340        can be < 0.
341    o pkg/seaice/seaice_solve4temp.F (SOLVE4TEMP_LEGACY undef):
342      - remove from F_ia (and from it's derivative dFiDTs1) the contribution of
343        conductive heat flux F_c , and add it explicitly when updating tsurf as
344        solution of: Fc = Fia + d/dT(Fia - Fc) *delta.tsurf
345        so that now F_ia has a consistent meaning through the entire routine.
346        This causes differences at truncation level: update output of fwd exp.
347        global_ocean.cs32x15.seaice.
348    o pkg/seaice:
349      - lots of editing/cleaning in seaice_solve4temp.F + better documentation
350        of arrays, sign/direction of fluxes; no effect on results.
351      - replace hard coded 273.16 (=previous value of celsius2K) by celsius2K
352        in seaice_budget_ocean.F & seaice_solve4temp.F (SOLVE4TEMP_LEGACY part);
353        note: this should have been done before changing celsius2K default.
354      - to keep results unchanged, add back old value of celsius2K in verification
355        exp. input*/data : lab_sea (AD), offline_exf_seaice (fwd+AD) & seaice_obcs
356      - replace hard coded seawater freezing temp in seaice_solve4temp.F (part
357        SOLVE4TEMP_LEGACY) of 271.20 (=previous value of celsius2K + default
358        value of SEAICE_freeze) by celsius2K+SEAICE_freeze so that seawater
359        freezing temp is consistent with value in seaice_growth.F ; this causes
360        differences at machine truncation level: update lab_sea AD output (3/4).
361    o pkg/seaice:
362      - mask (in exf_init_fixed.F) atemp,aqh,evap,precip,runoff,lwflx,areamask
363        and climsst/sss even when using seaice (to prevent calculation that might
364        use SST on land); does not affect any verification exp.
365      - apply mask to taux,tauy (in seaice_get_dynforcing.F); update output
366        of lab_sea.fd & lab_sea.hb87 and global_ocean.cs32x15.seaice_dynmix.
367    o pkg/seaice/seaice_growth.F: add mask to avoid non-zero ice thickness
368      over land (non-legacy code)
369    o vectorize salt_plume package:
370      - add extra code to salt_plume_frac and salt_plume_tendency_apply_s
371      - this code computes plumebk everywhere (also over land), thus requires
372        code to avoid divisions by zero and catch the case of kLev=Nr.
373      - efficiency of salt_plume_frac is still sub-optimal
374    o tools (genmake2):
375      - fix makefile NAME specification (option: -makefile NAME) by adding
376        "-f $MAKEFILE" in few places where it was missing including makedepend
377        command (contribution from Paul).
378    
379    checkpoint63i (2012/01/24)
380    o model/src:
381      - add factorized versions of some EOS code to find_rho.F,
382        define USE_FACTORIZED_EOS to turn it on (default for TARGET_NEC_SX)
383    o model/src:
384      - add celsius2K to namelist PARM01; remove unused recip_rhoNil from PARAMS.h;
385      - change default celsius2K from 273.16 to 273.15
386      - to keep results unchanged, add back old value of celsius2K in verification
387        exp. input*/data : aim.5l_cs, 1D_ocean_ice_column, lab_sea (fwd),
388         global_ocean.cs32x15(seaice) & cpl_aim+ocn(input_atm).
389    o model/src: add a little initialisation trick to find_rho.F and find_alpha.F
390      to make TAF generate vectorizable code
391    o pkg/seaice/seaice_evp.F: add code (copied from CICE) that avoids underflows.
392       Turn on by defining SEAICE_EVP_ELIMINATE_UNDERFLOWS. Most compilers
393       have flags that do this more efficiently.
394    o pkg/diagnostics/diagstats_calc.F
395      - for TARGET_NEC_SX fix the treatment of the scaling factor tmpFac=scaleFact
396    o pkg/obcs (with exch2):
397      - derive OB indices in overlap region from OB-InsideMask (in obcs_init_fixed.F)
398        and remove code (in obcs_readparms.F) which was based on EXCH of indices
399        (through buffer) and did not account for exch2 (e.g., CS-grid) topology.
400    o pkg/exf and seaice exp:
401      - change offline_exf_seaice.seaicetd test exp. to use default DIFF1 value (=0)
402        so that switching off area & heff advection flags does not affect results.
403      - change default EXF_LWDOWN_WITH_EMISSIVITY to #define in EXF_OPTIONS.h
404      - keep exp. seaice_obcs & 1D_ocean_ice_column(ad) unchanged (using #undef
405        EXF_LWDOWN_WITH_EMISSIVITY) and, using pkg/exf default emissivities, update
406        results of verification experiments: 1D_ocean_ice_column(fwd),
407        global_ocean.cs32x15.seaice(fwd+ad) & seaice_dynmix(ad), lab_sea (all 8)
408        and offline_exf_seaice (all 4).
409    o pkg/seaice:
410      - remove array YNEG, RIVER, TMIX (replaced by local var) from common block;
411        remove also areaNm1 & hEffNm1 when SEAICE_GROWTH_LEGACY is undef.
412      - fix bug: areaNm1 & hEffNm1 are needed in seaice_growth (SEAICE_GROWTH_LEGACY)
413        but were not filled when resp. SEAICEadvArea=F & SEAICEadvHeff=F and
414        not multi-dim advection;
415      - fix seaice_growth.F to compile with both SEAICE_GROWTH_LEGACY and
416        SHORTWAVE_HEATING #undef.
417    o optim: make Makefile more robust (?)
418    o pkg/obcs:
419      * fix treatment of obcs_read_pickup for TAF
420    o pkg/shelfice:
421      * add missing initialisation of num_shifwflx
422      * new adjoint verification exp. for isomip
423      * change Prandtl and Schmidt numbers from generic formulations
424        (in terms of model diffus. and visc.) to separate runtime
425        parameters, with Holland and Jenkins (1999) default values.
426    o pkg/exf (interpolation):
427      - extended input field (2 rows) near the N & S poles:
428        * fill in with the symetric value (when even Nb of data in longitude)
429        * add average value at the poles only for scalar quantities ; for vector
430          component interpolation, skip the averaging and keep duplicated values,
431          unless the 2 components have same location (uvInterp=T) in which case
432          interpolate the 2 components together using S/R EXF_INTERP_UV.
433      - new S/R EXF_INTERP_UV to interpolate the 2 components of a vector field
434        together: this allows to account properly for local orientation when
435        averaging at N & S pole.
436      - add CPP option EXF_USE_OLD_INTERP_POLE to recover old results regarding
437        exf-interpolation near N & S poles. Undef by default.
438      - add debug check/print on 1rst iter if debugLevel >=2.
439    o pkg/exf:
440      - change masking flags definition (no longer "parameter"), put them in
441        common block and set them in S/R EXF_INIT_FIXED.
442      - change recognized masking flag from s,u,v to c,w,s since the mask
443        to use (maskC,W,S) depends on position on model grid and has little to
444        do with scalar/vector difference; fix masking if using P-coordinates.
445      - fix masking of wind-stress (was wrong if interpolated or read on A-grid)
446        and update results of exp. global_with_exf (x2).
447      - fix setting of zenith-angle table when SHORTWAVE_HEATING is undef.
448    o pkg/obcs
449      - S/R obcs_calc_stevens: fix a small bug (gammat -> gammas where appropriate)
450    o pkg/exf (interpolation):
451      - assume periodicity in X only if input field cover full longitude range.
452      - improve search for lat. index (supposed to be faster, in ~log2(ny) steps,
453        and should vectorise).
454      - fix input lat of the 2 added row (in case we provide N.pole data).
455    
456    checkpoint63h (2011/12/30)
457    o pkg/seaice:
458      - change declaration of UVM from _RL to _RS in order to get B-grid
459        uIce,vIce monitor when _RS = real*4
460    o pkg/offline:
461      - new S/R OFFLINE_RESET_PARMS for resetting main-model params (switch off flags);
462      - compute vertical velocity if not read from file (switch on exactConserv
463        & staggerTimeStep);
464      - fix output of ptracer monitor iter & time for default PTRACERS_monitorFreq.
465    o verification:
466      - update grid-files (in tutorial_held_suarez_cs/input and fizhi-cs-32x32x40/input)
467        with grid-angle generated using "utils/matlab/cs_grid/cubeCalcAngle.m":
468        fix Pb in yG definition @ 2 missing corners (previously yG was averaged);
469      - update output of exp. global_ocean.cs32x15.viscA4 after changing
470        grid-file angles (used here for coriolis-3d);
471      - remove (or gzip) few files not needed to run fizhi-cs experiments.
472    o pkg/exf (vector interpolation):
473      - rotate vector component toward local grid-axis orientation using grid-angles
474        (stored in GRID.h) instead of locally computed rotation angle; keep old code
475        available with exf option EXF_USE_OLD_VEC_ROTATION (undef by default).
476    o pkg/seaice:
477      - allow to compile with exf options ALLOW_ATM_TEMP or ALLOW_DOWNWARD_RADIATION
478        undefined. Fix and remove the stop when ALLOW_RUNOFF is undefined.
479    o pkg/PKG_OPTIONS.h files:
480      - move #include "CPP_OPTIONS.h" just after #include "PACKAGES_CONFIG.h",
481        outside of the #ifdef ALLOW_THISPKG / #endif block.
482      - update verification/*/code/PKG_OPTIONS.h files.
483    o add a verification experiment (offline_exf_seaice/input.seaice) that test
484      the B-grid LSOR solver
485    o pkg/seaice: sort out emissivity and long wave radiation step 2:
486      - add emissivity for snow and ice as new run-time parameters
487        (unfortunately) that default to the corresponding exf values; this
488        changes results in most verification experiments so that for backward
489        compatibility these parameter have to be set explicitly to inconsistent
490        values (ugly);
491      - the exf-flag EXF_LWDOWN_WITH_EMISSIVITY then gets rid off the hard-wired
492        emissivities of 0.97 associated with lwdownloc in S/R seaice_solve4temp
493        until we agree how to handle this bug properly
494    o pkg/exf (interpolation):
495      - add a set of run-time param ({inputfield}_interpMethod), one for
496        each interpolated input field, to select the interpolation method
497        with a value of zero switching off the interpolation;
498      - print interpolation parameters to standard output;
499      - refine exf_check.F accordingly ; stop if USE_NO_INTERP_RUNOFF is defined
500        (to use instead runoff_interpMethod=0 in data.exf).
501      - simplify default setting of interpolation parameters (for all fields,
502        set position to match model grid cell-center position, leading to trivial
503        interpolation in case of regular Lat-Lon grid) and fix for the case of
504        non-uniform delY.
505    o pkg/exf/exf_radiation.F: add the factor ocean_emissivity to lwdown, for
506       within #ifdef EXF_LWDOWN_WITH_EMISSIVITY/#endif. Unless ocean_emissivity=1.
507       this factor is absolutely required, because the lw exitance (= out-going
508       long wave radiation) is emissivity*stefanBoltzmann*T^4 + rho*lwdown,
509       where the reflectivity rho = 1-emissivity for conservation reasons. Once
510       this is established, we can remove the CPP-Flag (if we want to).
511    o pkg/seaice:
512      - qualify a stop statement in S/R seaice_check: EXF_READ_EVAP and
513        ALLOW_BULKFORMULAE are only required if SEAICE_EXTERNAL_FLUXES is defined
514      - sort out emissivity and long wave radiation, step 1: make SEAICE_emissivity
515        what the name implies (and not emissivity*BoltzmannConstant), this means
516        the old default value of 5.5e-8 now means
517        5.5e-8/5.670e-8 = 0.97001763668430343479 as ocean_emissivity in
518        S/R exf_readparms
519      - FV-discretization of the B-grid LSOR solver, turn on with
520        SEAICE_LSRBNEW. This new solver also involves a slight re-organization
521        of the calling routine dynsolver, so that B and C-grid code look a
522        little more alike.
523      - fix index bugs in ostres.F (B-grid code)
524    o pkg/seaice/seaice_ocean_budget.F: change (unused) code to make it look better
525    o pkg/seaice/seaice_readparms.F: make ocean_emissivity*stefanBoltzmann the
526      default for SEAICE_emissivity, if useEXF; requires setting a wrong
527      parameter value in global_ocean.cs32x15/input.seaice/data.seaice for
528      backward compatiblity
529    o model/src: use sigmaR in calc_ivdc
530    
531    checkpoint63g (2011/12/16)
532    o pkg/seaice/seaice_growth.F:
533      fix heat conservation of the coupled ocean-seaice system.
534      when SEAICE_HEAT_CONSERV_FIX is defined, the mismatch of
535      solid vs liquid water treatment is resolved via QNET.
536    o pkg/seaice/seaice_growth.F:
537      add missing term for sublimation in saltFlux, which was breaking conservation.
538    o pkg/seaice/seaice_model.F:
539      Remove this patholigical case treatment in evolution branch,
540      where it is un-necessary and breaks conservation.
541      Update global_ocean.cs32x15/results accordingly for
542      output.seaice.txt output_adm.seaice.txt and output_adm.seaice_dynmix.txt
543    o model/src:
544      useRealFreshWaterFlux: remove masking of EmPmP (using maskInC) in
545      external_forcing_surf.F and apply mask directly in S/R SOLVE_FOR_PRESSURE.
546    o pkg/obcs:
547      modify Stevens boundary conditions so that S/R obcs_calc_stevens computes
548      tendency for temperature and salinity that is then applied to update
549      theta and salt in S/R obcs_apply_ts; this requires proper masking of all
550      horizontal advection and diffusion contributions on the boundary (in
551      S/Rs gad_advection, gad_calc_rhs, gmredi_rtransport, gmredi_calc_diff), and
552      removing the mask in S/R timestep_tracer. The advantage of this approach is
553      that the updated tracer values include contributions from the surface
554      forcing and vertical diffusion.
555      This modification changes exp4.stevens because of vertical diffusion.
556    o model/src:
557      change non-curvilinear grid setting to also work with exch2 + blank tiles:
558      - move delX,delY to new header file (SET_GRID.h) and adjust length to 1rst
559        face dimensions.
560      - new S/R INI_LOCAL_GRID to define model tile-local grid (using same units
561        as delX,delY) and called from S/R INI_CARTESIAN_GRID, INI_CYLINDER_GRID
562        and INI_SPHERICAL_POLAR_GRID.
563      change test-experiment global_ocean.90x40x15:
564      - split the domain in many more tiles (9x4 tiles of 10x10 each);
565      - switch to exch2 and remove 1 blank-tile (but only for MPI test).
566      - update results of both test (std & dwnslp).
567    o pkg/diagnostics/diagstat_calc.F: fix problem with non-initialised halos in
568       tmp-fields for TARGET_NEC_SX at the cost of extra loops and less vectorisation
569    o model/src:
570      - take sigma-coords related code out of update_etah.F into new S/R UPDATE_ETAWS
571        and fix initialisation when using sigma-coords.
572    o model/src:
573     - improve Gael's changes from Jan 14, 2011 "addition of an 'update' of hfacc etc.
574       to their current value at the beginning of forward_step.F": add a new run-time
575       switch "doResetHFactors" (default=false) and use it to do (or not) the resetting.
576     - set doResetHFactors=T in the following test exp:
577        global_ocean.90x40x15/input (rStar) & input.dwnslp (linFS),
578        global_ocean.cs32x15/input.seaice (rStar), hs94.cs-32x32x5/input.impIGW (linFS)
579        and tutorial_global_oce_in_p (nonLinFS in p)
580    o pkg/ecco
581      - added IES cost term
582    o verification/advect_xz
583      - scale down the depth by 1/100 (from 200 km to just 2.km)
584      - add secondary test using divergent flow, r-star and implicit vertical advection.
585      - add note (check_conserve_TS.txt) and matlab script to check global
586        conservation of T & S with NonLin-FreeSurf and Adams-Bashforth.
587    o pkg/rbcs:
588      - add missing relaxUFile & relaxVFile in namelist (in rbcs_readparms.F).
589    o pkg/obcs (Stevens BCs):
590      - fix various problems in the phase speed computations of the Stevens
591        boundary conditions:
592        - sign error for western and southern boundaries,
593        - time tendencies were underestimated by factor of dTracerLev and some just
594          zero (for multidim advection schemes) -> now estimate time tendencies
595          from difference between previous (n) time level and the one before (n-1);
596          this requires storing a field per tracer per boundary, also in the pickup
597          files.
598        - replace deltaTmom in cflMer/Zon computation with dTracerLev
599        - set default phase velocity to cflMer/Zon
600      - update verification experiment exp4.stevens
601    o pkg/generic_advdiff (implicit_r):
602      - fix implicit vertical advection conservation with AB and/or NonLin-FreeSurf
603        (remove Tr*d/dz(w) in gad_implicit_r.F and add it in gad_calc_rhs.F);
604      - fix implicit vertical diffusion or advection with NonLin FreeSurf
605        (was using current recip_hFacC instead of future recip_hFacC): set future
606        recip_hFac in thermodynamics.F and pass & use it in all vertical implicit
607        solver S/R ;
608      - fill diagnostics of vertical advective fluxes (computed from tendency)
609        when using implicit vert. advection;
610      - update output of exp that uses NonLin-FreeSurf & implicit vertical diffusion:
611         global_ocean.90x40x15 (fwd+AD), global_ocean.cs32x15 (4 fwd +4 AD),
612         tutorial_global_oce_in_p (fwd), tutorial_tracer_adjsens (AD)
613         and cpl_aim+ocn (used in ocean); to be fixed: bottom_ctrl_5x5.
614    o pkg/diagnostics:
615      - add diags for T & S tendency which goes through Adams-Bashforth.
616    
617    checkpoint63f (2011/11/30)
618    o pkg/obcs/obcs_calc_stevens.F:
619      - join some loops to reduce number of if-statements
620      - fix a bug in code for northern and southern boundaries.
621    o pkg/seaice/seaice_init_varia.F
622      - undo resetting UVM=0 that has slipped in unnoticed in r1.49 and
623        caused zero ice-velocities for the B-grid code
624    o pkg/seaice/seaice_init_fixed.F
625      - fix a bug in the initialisation of the second metric terms
626        k2AtC and k2AtZ: k2AtC was set to the value of k2AtZ and k2AtZ was 0.
627      - this affects all seaice configurations with useCurviLinearGrid = .true.
628        and SEAICEuseDynamics = .true. (default) and SEAICEuseMetricTerms
629        = .true. (default)
630      - the only verification experiment affected is global_ocean.cs32x15:
631        icedyn, seaice, and seaice_dynmix (AD)
632    o pkg/thsice/thsice_diagnostics_state.F
633      - only for TARGET_NEC_SX: initialise all of tmpFld, so that overlap does
634        not contain garbage that can lead to surprises in diagstats_calc.F
635    o model/src:
636      - move bi,bj loops inside INTEGR_CONTINUITY ;
637      - call INTEGR_CONTINUITY directly from forward_step.F
638        (previously called from momentum_correction_step.F)
639      - call UPDATE_ETAH from integr_continuity.F and update initialise_varia.F,
640        forward_step.F and pkg/ecco/the_main_loop.F
641    o model/src/do_oceanic_phys.F:
642      - reset addMass to zero only if useICEFRONT ;
643      - separated k-loop for rhoInSitu calculation ;
644      - add 2 diagnostics for wVel*delta^k(Rho) at constant pressure (= WdRHO_P)
645        and at constant T,S (= WdRHOdP);
646      NOTE: change diagnostics WRHOMASS : this is now simply the Vertical transport
647        of In-Situ Density (Anomaly) (=wVel*rho^bar-k) (previously was Vertical
648        transport of locally-referenced potential density);
649        to recover old diag: (WRHOMASS)_old = (WRHOMASS)_new -1/2 * (WdRHOdP)
650    o gluemnc:
651      - replace ncrcat with ncks when adding variables to *.glob.nc
652      - change the way variables without record dimensions are handled so that
653        files that have variables with and without record variables can be glued:
654        add a record dimension with a new unique name to be able to differentiate
655        between variable with and without a-prior record dimensions. Remove
656        this record dimension before adding the variable to the *.glob.nc file.
657        This procedure automatically works also for grid.*.nc files that do not
658        have any record dimension.
659    o verification/cpl_aim+ocn:
660      - generate new reference output on baudelaire (gfortran, mpich2) (previously
661        from old aces-grid cluster, ao + ifort) and update 'run_cpl_test' script.
662    o pkg/obcs/obcs_calc_stevens.F:
663      - add code for northern and southern boundaries.
664      - reorder some loops to save some operations and so that drFBar can be scalar
665    o model/src:
666      - re-arrange extrapolation calculation in Adams-Bashforth S/R (affects machine
667        truncation) and add diagnostics for Adams-Bashforth tendency increment.
668      - update test-exp. AD output:
669        1D_ocean_ice_column, bottom_ctrl_5x5, lab_sea.noseaicedyn, obcs_ctrl;
670      and FWD output: exp4 (x3), fizhi-cs-32x32x40, fizhi-cs-aqualev20,
671        front_relax (x3), global_ocean.90x40x15 (x2), global_ocean.cs32x15 (x5),
672        global_ocean_ebm, ideal_2D_oce, internal_wave, isomip (x3), lab_sea (x4),
673        matrix_example, MLAdjust (x5), natl_box (x2), tutorial_advection_in_gyre,
674        tutorial_global_oce_in_p, tutorial_global_oce_latlon and
675        tutorial_plume_on_slope.
676    o pkg/diagnostics/diagstats_calc.F: add special code for TARGET_NEC_SX
677      that vectorises. This code uses 3 extra 2D fields, F90 array assignments
678      and F90 intrinsic routines SUM, MINVAL, MAXVAL, but since TARGET_NEC_SX
679      does not even come with an F77 compiler anymore, this should not be
680      a limitation
681    
682    checkpoint63e (2011/11/06)
683    o pkg/seaice adjoint of LSR:
684      - substantially rework STORE dirs.
685      - add new flag SEAICE_LSR_ADJOINT_ITER and parameter SOLV_MAX_FIXED
686        this flag will do SOLV_MAX_ITERS but only store SOLV_MAX_FIXED fields
687        and only perform SOLV_MAX_FIXED adjoint iters.
688        If flag SEAICE_LSR_ADJOINT_ITER is undef-ined, the store in the iteration
689        always goes to same record, meaning that the last forward field will be
690        the one used in the adjoint - an approximation.
691      - now produces non-zero LSR-related gradients, and acceptable gradients for
692        An's zonal (x-z) test case (to be checked in)
693      - lab_sea: produces acceptable gradients for lab_sea with forward/backward LSR
694        (but these are screwed up by the thermodynamics in the first place);
695        reduce from 4 to 3 timesteps to avoid t.d. issue as temporary solution;
696        output_adm.txt also reflects changes to seaice_lsr
697      - global_ocean.cs32x15:
698        * the "default" input_ad.seaice has been re-defined to always exclude dynamics
699          (output_adm.seaice.txt was updated)
700        * new input_ad.seaice_dynmix tests a forward LSR / backward free-drift
701          (output_adm.seaice_dynmix.txt)
702    o test-exp. exp4+stevens:
703      - switch off pTracers and nonHydrostatic (restart problems with NH); update output
704    o pkg/seaice (lsr solver):
705      - put coriolis term into FORCEX,Y (as in seaice_evp.F; previously in rhsU,V only);
706        update output (change truncation) of FWD test exp lab_sea & global_ocean.cs32x15
707      - fix SEAICEuseFREEDRIFT for new OBCS version (ndef OBCS_UVICE_OLD)
708      - new parameter "LSR_mixIniGuess" allows (if=2,4) to mix free-drift solution
709        into initial guess for linearised solver; use weight ~ (1/err)^2,4.
710      - compute (with new S/R) and print initial (+ free-driff sol. if available)
711        and final residual of linearised system.
712    o pkg/pp81: add diagnostics for vertical eddy viscosity and diffusivity
713      (requires new subroutines pp81_init_fixed.F/pp81_diagnostics_init.F)
714    o pkg/obcs: Stevens BCs (still only for east and west)
715      - fix Stevens BCs by using intermediate velocities of previous
716        time step as "baroclinic" contribution rather velocity of one grid cell
717        inside the boundaries; more consistent but makes the entire treatment
718        more complicated, requires new pickup files and two new S/Rs:
719        obcs_copy_uv_n and obcs_save_uv_n
720        keep old version with flag OBCS_STEVENS_USE_INTERIOR_VELOCITY
721        (undefined by default)
722      - silently move computation of some grid factors into separate loops to
723        save some recomputations
724      - add a hack for non-linear free surface
725      - add a verification experiment to exp4 that tests this code
726    o make gluemnc/xplodemnc work with (moron) non-GNU shell tools
727    
728    checkpoint63d (2011/10/25)
729    o pkg/obcs + seaice-dynamics:
730      - new implementation calls OBCS_APPLY_UVICE (in seaice_dynsolver.F) before
731        solving for uIce,vIce and prevent SEAICE_LSR or SEAICE_EVP to modify OB
732        values (consistent with an implicit method).
733      - add option OBCS_UVICE_OLD (in OBCS_OPTIONS.h, defined by default) to
734        return to older implementation (same results as before); note that none of
735        the "experimental" OBCS_SEAICE options are implemented in the new version.
736      - switch test exp. seaice_obcs to use new version (update output).
737    o pkg/seaice:
738      - add few stop (B-grid & CS-exch, B-grid & obcs, AUTODIFF & SEAICE_maskRHS)
739      - add parenthesis in Water-Ice drag calculations (evp & lsr);
740      - in seaice_lsr.F, simplify and fix AA3 setting in case sNx or sNy=1;
741        and fix case SEAICE_waterDrag=0 (but unstable if no or little seaice)
742      - update output of test exp lab_sea that uses evp or lsr (fwd+ad)
743        and global_ocean.cs32x15 (icedyn & seaice fwd+ad).
744    o pkg/layers:
745      - Include potential density as new coordinate (Thanks to David Munday)
746    o pkg/dic:
747      - Remove subroutine CALC_PCO2_APPROX_CO3 from carbon_chem.F and add
748        carbonate computation/output to CALC_PCO2_APPROX
749    o pkg/generic_advdiff
750      - make TAF generate code that vectorizes:
751        gad_dst3fl_adv_*.F, gad_u3c4_impl_r.F
752    o model/src:
753      - improve vectorization also for adjoint code of
754        solve_tridiagonal and solve_pentadiagonal. As this requires up to
755        5 new 3D-fields, this code is only turned on for the combination of
756        ALLOW_AUTODIFF_TAMC and TARGET_NEC_SX. Also remove error message
757        for singular matrix check (only for TARGET_NEC_SX).
758      - remove hard-wiring of CPP-flag ALLOW_SOLVERS_KLOOPINSIDE to
759        ALLOW_AUTODIFF. This flag now needs to be set outside of
760        solve_tri/pentadiagonal.F
761    o pkg/exf:
762      - fix previous modif in exf_readparms.F (revision 1.66: treatment of
763        optional namelist EXF_NML_OBCS).
764      - add many debug-print (to trace down where pkg/cal error msg comes from)
765    o pkg/mom_vecinv/mom_vi_hdissip.F
766      - rearrange loops so that vectorization is improved and in particular
767        the adjoint routine vectorizes. The code is a little longer now, but I
768        think easier to read.
769        Note: CPP-flag MOM_VI_ORIGINAL_VISCA4 is not tested.
770    o pkg/seaice:
771      - allow to specify initial seaice velocity from files (uIceFile,vIceFile)
772    o pkg/exch2:
773      - alternative code (without tile x tile matrix) for cumulated (global) sum;
774        used as default; keep using matrix version in adjustment.cs-32x32x1.
775    o tools/build_options:
776      - after merging some MPI and/or multi-threads specific optfiles so that
777        the modified default optfile support both built (using genmake2 -mpi
778        for the MPI built, using genmake2 -omp for OpenMP built),
779        move now obsolete optfiles to tools/build_options/unsupported/
780       (add copy of email sent to support list in doc/optfiles_changes.txt)
781    
782    checkpoint63c (2011/09/28)
783    o pkg/ebm:
784      - fix ebm_zonalmean.F for several procs in Ydir (nPy > 1); update output of
785        test exp. global_ocean_ebm (affects machine truncation, 12 digits for cg2d)
786    o pkg/seaice (SItracer pickup)
787    * Simple code for pickup of SItracer fields (#define ALLOW_SITRACER)
788      To be done:
789      - thorough testing of missing fields in S/R seaice_read_pickup
790      - thorough matching between generic tracers and specific fields used
791        (e.g. volume-weighted age, area-weighted age, salinity, ...)
792    o pkg/grdchk:
793      - all procs calculate and print finite-difference gradient (for testreport)
794      - change description output used by testreport;
795      - AD testing: also compare and report Finite-difference gradient;
796        => update all output_adm*.txt
797    o test exp. global_ocean_ebm:
798      - switch back useRealFreshWaterFlux (no problem anymore with run-off);
799        and turn on exactConserve; update (fwd) output.
800    o pkg/seaice (LSR):
801      - print to STDOUT number of solver iterations at SEAICE_monFreq interval.
802      - modify solver to deal cleanly with u/v switch at face edges (CS-grid):
803        * identical results with non-CS topology (but save up to half of EXCH calls)
804        * no much changes in cs-32 verification tests since no ice at face edges
805         (differences due to convergence criteria, since nb of iterations changed)
806        * expect some differences on lat-lon-cap grid.
807        update FWD results of global_ocean.cs32x15 test exp. (icedyn & seaice)
808    o pkg/exch2:
809      - add new CPP option to disable Cumul-Sum matrix (to save storage when using
810        many tiles); until alternative coding is added, just add a stop.
811    o pkg/kpp:
812      - move ptracer/salt correction to KPP diffusivity from calc_3d_diffusivity.F
813        to S/R KPP_CALC_DIFF_PTR (+ add tracer-index to argument list).
814    o optfiles:
815      - merged few MPI specific (*+mpi*) and multi-threads specific (*+mth) optfiles
816        into corresponding standard one, which now support different build:
817        (when using "genmake2 -mpi" for MPI built, "genmake2 -omp" for OpenMP built)
818      - add "darwin_amd64_gfortran" optfile (initially from Constantinos, tested by Gael)
819    o pkg/obcs (seaice):
820      - add missing EXCH for uIce,vIce after applying OBCS;
821      - remove S/R EXF_SWAPFFIELDS_X/Y , disable S/R EXF_SET_OBCS_X/Y by adding
822        argument = number of levels to S/R EXF_SWAPFFIELDS_XZ/YZ and S/R
823        EXF_SET_OBCS_XZ/YZ ; update obcs_exf_load.F;
824      - fix EXF_SET_OBCS_XZ/YZ for multi-threaded (assuming loaded arrays are shared)
825      - verification exp. seaice_obcs: split domain in 2 tiles ; add SIZE.h_mpi
826        and eedata.mth for MPI and mutlti-threaded testing.
827    o pkg/flt:
828      - make FLT EXCH working with multi-threads (and MPI + multi-threads);
829      - use buffer for floats IO (trajectories & profiles); size set in FLT_SIZE.h;
830      - fix pickup and trajectories + profiles output with multi-threads;
831      - add parameter to select group of fields to write along trajectory and
832        profile (default unchanged);
833      - only call PORT_RAND* function when flt_noise <> 0;
834      - add multi-threaded test for verification exp. flt_example.
835    o eesupp/src:
836      - fix S/R ALL_PROC_DIE for MPI+multi-threads.
837      - USE_OMP_THREADING: check that number of threads (from eedata) matches
838        actual number (from env.var. setting).
839    o pkg/ebm:
840      - fix multi-threading in ebm_area_t.F ; clean-up EBM.h header file.
841      - add multi-threaded test for verification exp. global_ocean_ebm
842    
843    checkpoint63b (2011/08/29)
844    o pkg/ebm:
845      - fix sign of runoff;
846      - update directly forcing fields (Qnet,EmPmR) to use standard
847        external_forcing_surf.F (remove ebm_forcing_surf.F);
848      - avoid loading forcing fields a 2nd time (1rst time from ini_forcing.F);
849      - set either tauThetaClimRelax (in data) or tauThetaZonRelax (in data.ebm)
850        and apply relaxation towards corresponding SST field (2-D map or ZonAver).
851      - update global_ocean_ebm parameters file data and update output (fwd+ad).
852    o verification/matrix_example:
853      - split domain in 8 tiles (2x4); add SIZE.h_mpi and eedata.mth for
854        MPI and mutlti-threaded testing.
855    o pkg/matrix:
856      - change name of S/R MATRIX_INIT to S/R MATRIX_INIT_VARIA ;
857      - fix for multi-tiles (add bi,bj indices to exp/impMatrixCounter);
858      - fix for multi-threaded (remove DATA statement);
859      - use standard DIFFERENT_MULTIPLE function;
860      - add MATRIX_OPTIONS.h
861    o verification/matrix_example:
862       To allow to split the domain in several tiles, change the domain size
863        from 31x31 to 32x32 by adding 1 row (on Southern side) + 1 column (on
864        Western side) of land points.
865    o (*_)write_pickup:
866      - fix few bugs in mypackage_read/write_pickup.F
867      - in MDS_WR_METAFILES calls, replace "myTime" by a local copy into
868        array of length 1 (was caught by compiler syntax-check).
869    o pkg/diagnostics (velocity potential solver):
870      - fix initialisation of main diagonal matrix (for overlap values)
871    o tools/build_options:
872      - towards single optfile for MPI and non-MPI built: merge few +mpi optfile
873        into previously non MPI one (linux_am64 pgf77,open64,pathf90,ifort11)
874      - linux_amd64_gfortran: merge +mpi_generic version into standard optfile:
875        * move IEEE flags to DEVEL section; take IEEE flags from +mpi_generic ;
876        * FAST case: for now, keep -O3 with ini_masks_etc.F in NOOPTFILES list;
877        and use "-devel" testreport option for standard testing on baudelaire.
878    o pkg/grdchk:
879      - Assume that all gradient-check position are within the same tile
880        corresponding to global indices (iGloTile,jGloTile) and that
881        positions (i,j indices or nbeg) are local to this tile;
882      - set tile local-indices and proc. number according to tile global-indices;
883      - remove grdchkwhichproc from namelist (retired param);
884      - send adjoint gradient to all procs so that all procs print it to STDOUT;
885      - switch on MPI test for global_ocean.90x40x15 AD test experiment.
886    o adding package bbl (Bottom Boundary Layer)
887      description in MITgcm/pkg/bbl/bbl_description.tex
888      example/test experiment in MITgcm_contrib/bbl
889    o adjoint verifications
890      - changed 5 experiments to multi-tiles
891        * global_ocean.90x40x15
892        * obcs_ctrl
893        * offline_exf_seaice
894        * tutorial_dic_adjoffline
895        * tutorial_tracer_adjsens
896        changed reference output for those that crossed tile boundaries
897        (changed choices of gradient check positions)
898      - with same tiling, switch on MPI test for the last 4 (add SIZE.h_mpi)
899      - temporary bug fix in grdchk_loc.F for obcs
900    o genmake2 & testreport
901      - add target "obj" (just for OBJFILES files) to Makefile;
902      - add option to specify FEXTRAFLAGS on command line.
903    o pkg/mypackage:
904      - remove bi,bj arguments from argument list of S/R MYPACKAGE_CALC_RHS
905    
906    checkpoint63a (2011/08/02)
907    o pkg/diagnostics (velocity potential):
908      - fix velocity-potential calculation when using OBCS: balance net inflow
909        at each level (new S/R OBCS_DIAG_BALANCE).
910      - fix some of the problems with OBCS in stream-function calculation.
911    o pkg/exf/exf_readparms.F
912      - make treatment of optional namelists (EXF_NML_04, EXF_NML_SGRUNOFF,
913        EXF_NML_OBCS) more consistent, so that you need not have these lists
914        in data.exf when they are not used.
915    o optim/optim_readdata.F:
916      - add some output about obcs variables that might help debugging
917      - add a check about nvarlength
918    o pkg/ctrl: once again, fix computation of endrec in s/r ctrl_init_rec
919    o pkg/diagnostics (velocity potential):
920      - fix mask for OBCS (still problems in stream-function with OBCS);
921      - add specific parameter (default = main code CG2D params) for solver;
922      - in case of poor convergence, use solution corresponding to lowest residual.
923    o pkg/seaice/seaice_growth.F: small changes that permit vectorizable
924      adjoint code. In general statements like tmpscal=fld(i,j) are problematic
925      and should be avoided where possible.
926    o model/src (rStar):
927      - include r* effect on reference-state (PhiRef) in totPhiHyd
928        (so that it's really the potential anomaly at the cell center);
929        affect solution only if z* with full pressure in EOS.
930      - test-exp global_ocean.90x40x15: reduce viscA4 (was not stable) and
931        update output (because of z* in totPhiHyd and viscA4 changes);
932      - keep the previous diagnostics as "PHIHYDcR" (closer to potential anomaly
933        @ constant r) until interpolation at constant r is implemented.
934    o pkg/diagnostics
935      - fix RCENTER diagnostics in case cell center is not at interface middle
936    o add code for TEOS-10 (www.teos-10.org, McDougall et al. 2011). Use
937      this eos with eosType = 'TEOS10', in data (PARM01). This eos implies
938      that THETA and SALT are "conservative temperature" and "absolute
939      salinity"
940    o pkg/ctrl
941      - fix computation of endrec in s/r ctrl_init_rec
942      - ctrl_pack/unpack_*: remove unused variables and some obsolete code
943    o pkg/seaice/seaice_growth.F
944      - fix recomputation with FENTY_AREA_EXPANSION_CONTRACTION code,
945        remove then obsolete STORE directives
946      - fix STORE directives for tice and tices, so that only the
947        appropriate part of the fields are stored (and not the entire
948        field); update global_ocean.cs32x15.seaice AD output.
949      - cosmetic changes: adjust CPP flags and indentation for better
950        legibilty
951    o pkg/autodiff: add mnc-output of adBottomDragFld (code contributed by
952      Chris Wilson)
953    o pkg/gmredi:
954       Add Sub-Meso Eddies parameterisation from Baylor (for now, disabled with TAF),
955       and test it in verification exp. "front_relax.bvp" (update output.bvp.txt)
956    
957    checkpoint63  (2011/07/11)
958    o pkg/exch2:
959     - rename+move: nTiles in W2_EXCH2_PARAMS.h --> exch2_nTiles in W2_EXCH2_TOPOLOGY.h
960     - exch2 version of Cumul-Sum routine: S/R W2_SET_MAP_CUMSUM set up the
961       (2*nTiles)x(nTiles) Cumul-Sum matrix and Master Proc collects all tiles X,Y
962       increments, calculates Cumul-Sum @ tile origin and sends results to each tile.
963    o pkg/diagnostics:
964     - deal with pairs of post-processed diags which are computed together; in
965       particular, re-order list of diags within 1 file to save 2nd computation.
966     - add S/R to compute velocity stream-function (called after velocity-potential
967       calculation) from divergence free transport -> new diagnostics "PsiVEL".
968     - add parameter to select grid-point location where PsiVEL == 0.
969    o eesupp/src:
970       new S/R to calculate cumulated sum on tiled array, corner grid-cell location
971       (specific S/R needed with exch2 topology - for now, just print an error msg)
972    o pkg/shelfice
973     - Implement friction velocity-dependent transfer coefficients following
974       Holland and Jenkins, JPO, 1999
975       Original code by M. Losch with small modifs.
976       Enable with CPP option SHI_ALLOW_GAMMAFRICT
977       and runtime flag SHELFICEuseGammaFrict
978    o verification lab_sea & global_ocean.cs32x15:
979     - use tools/xmakedepend (instead of cyrus_makedepend, in genmake_local):
980       does not miss some dependencies (but is slower) and also works with many files
981       (default makedepend limitation for AD built).
982     - use cyrus_makedepend in adjustment.128x64x1 (so that it still tested).
983    o pkg/diagnostics:
984     - add run-time parameter "useMissingValue" (def=False) to fill land-point
985        (i.e., where mask=0) with MissingValue ; used only in MNC output file.
986       This replaces CPP-option DIAGNOSTICS_MISSING_VALUE.
987     - Extend the use of "missing_value" setting from data.diagnostics for the case
988       of counter-diagnostics (where fraction-weight is zero). This applies both to
989       MNC and MDS output files.
990    o pkg/seaice/seaice_growth.F:
991      - add 'a priori' cap of latent heat flux based on actual mass considerations
992        when SEAICE_ADD_SUBLIMATION_TO_FWBUDGET is used in conjunction with the
993        non-legacy seaice_solve4temp.
994      - add diagnostic of the residual sublimation freshwater flux (the freshwater
995        flux taken from the ocean if the total actual latent heat fluxes exceed
996        the maximum)
997      - remove the CPP switch around the *_FWbySublim unit change and move diagnostic
998       fill for SIatmQnt, SIfwSubl, SIatmFW to the end of seaice_growth.F.
999      - add diagnostic of the actual sublimation freshwater flux (that is 0. ifndef
1000       SEAICE_ADD_SUBLIMATION_TO_FWBUDGET) and of the latent heat flux (evap+sublim).
1001      - bug fix : frWtrAtm needs a_FWbySublim ifdef SEAICE_ADD_SUBLIMATION_TO_FWBUDGET.
1002      - bug fix : missing part to Martin's r_FWbySublim pathological case fix.
1003    o verification 1D_ocean_ice_column:
1004       made model domain truly 1x1x23 instead of 5x5x23 with only center cell (3,3,:) wet
1005       update results
1006    o pkg/diagnostics:
1007     - Implement setting of "Post-Processed" diagnostics (corresponding to gdiag(5)='P')
1008       which are not filled-up but computed from other diags ; In this case, the mate
1009       diag points to the primary (filled-up) diag to used for post processing.
1010     - Update Velocity-potential computation using post-processed diag framework.
1011     ==> Change the ordering of fields and time-periods in MDS output file
1012       when using periodic averaging: now writes one time record with the full set
1013       of fields for this time period, then the next time reccord (it used to be
1014       one field with the full set of time records then the next field).
1015         Note: this is now similar to NetCDF (MNC) output file. <==
1016    
1017    checkpoint62z (2011/06/21)
1018    o adjoint monitor:
1019     - Add adjoint monitor output for packages exf, seaice
1020       and update relevant testreport output
1021    o pkg/seaice:
1022     - re-order diags inits so that they appear in order in available_diagnostics.log
1023     - added diags: hsnow thermo. rates of change, area preceeding ridiging process,
1024       area/heff/hsnow preceeding thermodynamic growth/melt.
1025     - modified diag: SIdA; output actual effect, as the description states.
1026     - modified description: SIqneti, SIqneto, SIuheff, SIvheff, SIdAb*, HSNOW.
1027     - retired redundant diags: SIyneg, SIfice, SIsnwice, SIthdgrh.
1028       (SIyneg->SIdHbOCN; SIfice->SIdHbATC; SIsnwice->SIdHbFLO;
1029        and SIthdgrh->SIdHbOCN+SIdHbATC+SIdHbATO)
1030     - modified diags (2) : switch all SIdA*, SIdH*, SIdS* from delta to rates.
1031     - added diagnostics for seaice generic tracers (SItr*).
1032     - added SItrUnit and SItrNameLong run time param (for SItr* diags).
1033     - in diag names, replaced 'PrTh' abbrev. of 'preceeding thermo' with 'PT'.
1034     I. Fenty: 18-Jun-2011:
1035     Minor changes to seaice package:
1036     1) Retired old variables (A22, SEAICE_lhsublim, areaMax, areaMin, hiceMin) and
1037        added some new ones (SEAICE_area_reg, SEAICE_hice_reg, SEAICE_area_floor)
1038       - Differentiated "regularization variables" from "floor variables"
1039        * areaMin became SEAICE_area_reg (old A22) and SEAICE_area_floor
1040        * hiceMin became SEAICE_hice_reg (old hiceMin)
1041          (with _reg meaning regularization variable)
1042       - SEAICE_lhSublim becomes lhSublim, the sum of SEAICE_lhEvap and SEAICE_lhFusion
1043        so as to ensure energy conservation when going between phases
1044      - A22 was not used anywhere
1045     2) Changed regularization procedure for heffActual and hsnowActual to ensure
1046        well-boundedness and smooth adjoint in seaice_growth.F
1047     3) Fixed a bug where seaice_solve4temp would not recognize ice-free grid cells
1048        because the old regularization always set heffActual >= 0.05 cm
1049     4) Changed the model so that the default behavior is to put a small (10^-5) "floor"
1050        on AREA when HEFF > 0.
1051      - went from requiring ALLOW_PRECLUDE_INFINITESIMAL_AREA to be defined to
1052        requiring that DISABLE_AREA_FLOOR *not* be defined
1053     Affected verifications:
1054      - 1D_ocean_ice_column (output.txt output_adm.txt)
1055      - global_ocean.cs32x15 (output.seaice.txt output_adm.seaice.txt)
1056    o pkg/diagnostics:
1057      - move MNC code from diagnostics_out.F into new diagnostics_mnc_out.F (2 S/R).
1058      - rename S/R GETDIAG to DIAGNOSTICS_GET_DIAG and change type of 1rst argument
1059        (was _RL, now integer) with option = 0 to retrieve all levels.
1060      - add pieces of code to compute velocity potential at each level (new diagnostics
1061        PhiVEL, works only when UVELMASS & VVELMASS are also turned on);
1062        for now, using same params as CG2D (target-resisual, max Nb of iter ...).
1063      - fix few issues with counter diagnostics in diagnostics_setdiag.F &
1064        diagstats_setdiag.F (if diagnostic counter is itself a counter diag)
1065        and in diagnostics_fract_fill.F (do not need a valid pointer for the
1066        diagnostics counter-mate); check that definition of counter-diagnostic
1067        includes a valid counter-mate (in diagnostics_set_levels.F).
1068    o model/src (rStar):
1069      - add rStar scaling factor in diags_phi_hyd.F (similar to calc_grad_phi_hyd.F);
1070        affect solution only if z* with full pressure in EOS;
1071        update output of test-exp global_ocean.90x40x15.
1072    o pkg/seaice:
1073      - introduce siEps=1e-5 parameter
1074      - use areaMax in AREA update (part 4), consistent with ridging step (part 2.5).
1075      - re-organize SEAICE_ADD_SUBLIMATION_TO_FWBUDGET code.
1076      - introduce ALLOW_SITRACER and seaice_tracer_phys.F to handle generic seaice tracer.
1077        For now it covers, and was tested for, ice salinity and age (attached to HEFF),
1078        as well as ice cover age and ridging index (attached to AREA).
1079        For now the run time parameters (in data.seaice/SEAICE_PARM03) are
1080        SItrName (e.g. 'age') and SItrMate ('HEFF', which is the default, or 'AREA').
1081        Up to SItrMaxNum=3 tracers can be used simultaneously.
1082    o pkg/salt_plume:
1083      -introduce SPsalFRAC run time parameter that sets the fraction of the
1084       salt by-product of ice growth (SPsalFRAC*(1-SIsalFRAC)*salt typically)
1085       that gets vertically redistributed (fluxed down) by pkg/salt_plume.
1086    o model debug options:
1087      - Switch reading of debugMode from S/R INI_PARMS (parameter file "data", stored
1088        in PARAMS.h) to S/R EESET_PARMS (parameter file "eedata", stored in EEPARAMS.h).
1089      - Refine debug-msg printing selection (3 new levels):
1090        debugMode  : controls printing of debug messages (sequence of S/R calls).
1091        debugLevel : controls printing of algorithm-relevant auxiliary/debug messages
1092         debLevZero =  0 ; /* level of disabled aux. msg printing */
1093         debLevA =  1 ; /* level of minimum  aux. msg printing */
1094         debLevB =  2 ; /* level of low aux. print (report read-file opening)*/
1095         debLevC =  3 ; /* level of moderate debug prt (most pkgs debug msg) */
1096         debLevD =  4 ; /* level of enhanced debug prt (add DEBUG_STATS prt) */
1097         debLevE =  5 ; /* level of extensive debug printing */
1098        New debugLevel default: with default debugMode value (=F),
1099          = 2 (debLevB) or = 1 (debLevA) in case ALLOW_AUTODIFF is defined.;
1100          and if debugMode=T, default debugLevel = 4 (debLevD).
1101        Relation with previous settings:
1102         debLevB (=2) corresponds to former debLevA (=1)
1103         debLevD (=4) corresponds to former debLevB (=2)
1104        Note:
1105         a) if debugLevel=0, skip WRITE_GRID call when nIter0 > 0 (same as before);
1106         b) default debugLevel=1 is convenient in AD runs (avoid many file opening msgs);
1107            to recover previous default, set debugLevel=2 (e.g. AD-test hs94.1x64x5)
1108      - Add new parameter (printResidualFreq, read from PARM02 namelist) to print
1109        detailed CG solvers convergence; off (=0) by default, except if debugLevel=5.
1110    o pkg/obcs:
1111      - change OBCSfixTopo default from True to False (should not change the results);
1112        keep OBCSfixTopo=T in verification-exp. seaice_obcs.
1113    o pkg/thsice:
1114      - fix bug in thsice_calc_thickn.F (was introduced in version 1.18) in
1115        2nd layer seaice sublimation (unlikely to happen)
1116      - use Interior mask for OBCS in thsice_advection.F (similar to what is
1117        done in gad_advection & seaice_advection).
1118    o adjoint:
1119      bug fix spotted by Gael Forget:
1120      seaice_advection and thsice_advection still had
1121      legacy CPP options to avoid CS corner updates for adjoint
1122    o pkg/seaice:
1123      => Change some of the defaults (2011/05/29):
1124         - change SEAICEuseFluxForm default (from False to True)
1125         - change DIFF1 default (from 0.004 m/s to 0. m/s)
1126         And print warnings if DIFF1 is not set in data.seaice and centered
1127          avection scheme is used without any diffusion.
1128      also:
1129      - fix seaice_diffusion calls in default AdvScheme part of seaice_advdiff.F;
1130      - set SEAICEdiffKh[] default in the same way as SEAICEadvSch[]
1131      - stop if DIFF1<>0 with SEAICEadvScheme <> 2, if DIFF1<>0 with any
1132        other non-zero SEAICEdiffKh[] diffusivity, if SEAICEadvSalt=T with
1133        #undef SEAICE_VARIABLE_SALINITY, if SEAICEadvAge=T with #undef SEAICE_AGE.
1134      update results of test exp.:
1135         lab_sea: output.fd (switch to AdvScheme=33 with diffKh=20)
1136             output.hb87, output_adm.evp (SEAICEuseFluxForm=T and diffKh=200)
1137             output_adm.noseaicedyn (SEAICEuseFluxForm=T)
1138         offline_exf_seaice: output.seaicetd, output_adm (SEAICEuseFluxForm=T)
1139         seaice_obcs: output (SEAICEuseFluxForm=T)
1140      and prescribe old default for SEAICEuseFluxForm (=F) and DIFF1 (=0.004)
1141          for standard fwd & AD lab_sea tests (to keep the same output).
1142    o pkg/seaice/seaice_growth.F:
1143      - use Ian Fenty's capping formulas for actual ice
1144      thickness thoughout EVOLUTION branch.
1145      - put treatment pathological case #2) in CPP brackets
1146      (ALLOW_AVOID_INFINITESIMAL_AREA, undef by default).
1147      - update global_ocean.cs32x15 and 1D_ocean_ice_colum results accordingly.
1148    o pkg/seaice:
1149      - seaice_diffusion.F : remove the min(DX,DY) factor permanently;
1150      pass the Laplacian diffusivity (in m^2/s) diffKh as a parameter;
1151      also pass fac as a param, which can be 1. (to update the tendency
1152      field) or the time step (to update the field itself).
1153      - seaice_advdiff.F: for multidim, call seaice_diffusion with
1154      e.g. SEAICEdiffKhHeff and with fac=1; for single-dim, call
1155      seaice_diffusion with e.g. SEAICEdiffKhHeff and with fac=time step.
1156      - SEAICE_PARAMS.h, seaice_readparms.F, seaice_check.F :
1157      hooks to handle SEAICEdiffKhHeff, SEAICEdiffKhArea, etc.
1158    o pkg/seaice:
1159      diffusion with centered advection scheme (diffus.F & advect.F):
1160      - simplify S/R DIFFUS (put deltaT & DIFF1 factor outside, move EXCH outside)
1161        to just compute the laplacian of input-field.
1162      - unroll k loop (harmonic,biharmonic diff) in advect.F to save 1 exch call.
1163      - fix flux-form version in diffus.F to conserve tracer.
1164      update output of lab_sea.fd & lab_sea.hb87 (1rst set of modif affects
1165       machine truncation) and lab_sea.salt_plume (conservative flux-form modif)
1166    
1167    checkpoint62y (2011/05/26)
1168    o pkg/seaice:
1169     - seaice_growth.F : in EVOLUTION branch, always include
1170       a_QSWbyATM_cover in qnet (as it should be).
1171     - verification/global_ocean.cs32x15 : update results accordingly
1172       (output.seaice.txt output_adm.seaice.txt).
1173    o pkg/seaice + obcs:
1174     - use maskInW & maskInS in multi-dim advection and biharmonic diffusion:
1175       equivalent of assuming no tracer gradient outside the OB region.
1176       update output of seaice_obcs (uses DIFF1 <>0 => biharmonic diffusion)
1177     - remove calls to OBCS_COPY_TRACER after EXCH calls (no longer needed
1178       after changes above);
1179     - obcs+seaice cleaning: apply seaice-tracer OB values to tracer field
1180       only at OB location (instead of over a band of OLx width).
1181    o pkg/seaice:
1182     - fix wrong indices in old (non Flux-Form) diffusion default S/R diffus.F
1183       (dxG(I+1, ...) changed to dxG(I, ...), no impact on Lat-Lon grid)
1184    o pkg/obcs:
1185      - split header file "OBCS.h" into 4 separated files:
1186        OBCS_PARAMS.h, OBCS_GRID.h, OBCS_FIELDS.h & OBCS_SEAICE.h
1187       Note: OBCS_PARAMS.h & OBCS_GRID.h can be included without OBCS_OPTIONS.h
1188         (contain no conditional statement which depends on OBCS options).
1189      - move "useOBCSYearlyFields" from "data.obcs" (hold in OBCS_PARAMS.h)
1190        to parameter file "data.exf", namelist EXF_NML_OBCS (in EXF_PARAM.h).
1191    o ctrl, cost, grdchk & autodiff pkgs:
1192      - make options file more standard (like other {PKG}_OPTIONS.h file but
1193        with AD_CONFIG.h); clean-up some of the included header files.
1194    o pkg/obcs:
1195      - do not mask tracer when applying OB (tracer == 0 could generate problems)
1196      - apply tracer OB values to tracer field only at OB location (instead of
1197        over a band of OLx width)
1198      - clean-up obcs_apply_w.F & obcs_apply_eta.F (since less calls to these S/R)
1199      - remove OBCS_MULTIDIM_OLD_VERSION code in gad_advection.F and remove
1200        obcs_apply_tloc.F & obcs_apply_sloc.F
1201    o obcs in model/src:
1202      - call OBCS_APPLY_W only if NonHydrostatic.
1203      - call OBCS_APPLY_ETA only if NonLinFreeSurf.
1204      - reset dEtaHdt and wVel to zero outside OB interior region ;
1205      - leave tracer unchanged outside OB interior region: This has no effect
1206        on the solution but just to prevent unrealistic tracer value outside OB.
1207      - zero out velocity outside OB interior region: This has no effect on
1208        the solution but just to prevent unrealistic velocity outside OB.
1209    o obcs and non-lin free-surf:
1210       move call to OBCS_APPLY_R_STAR from update_r_star.F to calc_r_star.F
1211       and call to OBCS_APPLY_SURF_DR from update_surf_dr.F to calc_surf_dr.F
1212       + add argument "etaFld" to OBCS_APPLY_R_STAR & OBCS_APPLY_SURF_DR:
1213       this fixes missing EXCH + get consistent eta OB value (+ fix restart).
1214       update results of test-exp. exp4(nlfs).
1215    o exp4 (nlfs) test-exp:
1216       use OBC for Eta at Western & Eastern OB (to test prescribing Eta
1217       with NonLin-FreeSurf); update output.nlfs.txt
1218    o obcs and 2d/3d solver norm:
1219       use interior masks (maskInC) to cancel out cg2d & cg3d matrix coeff at OB
1220       and outside OB interior region (will allow to place OB further inside the
1221       domain). Depending on the domain, can affects cg2d-Norm (previous
1222       cancellation outside OB was only partial), e.g. in exp4 & obcs_ctrl,
1223       and cg3d-Norm (previous Norm was computed before canceling OB terms),
1224       e.g. in tutorial_plume_on_slope.
1225      - update output of exp.: exp4 (x2), obcs_ctrl and tutorial_plume_on_slope.
1226    o pkg rbcs:
1227      - split RBCS.h into 3 files: RBCS_SIZE.h, RBCS_PARAMS.h & RBCS_FIELDS.h
1228      - add capability to apply relaxation to horizontal velocity uVel & vVel.
1229    o pkg/grdchk: add gradient check for control variable xx_shifwflx
1230    o pkg/shelfice/shelfice_init_fixed.F
1231      fix CPP-flag combinations
1232    o pkg/seaice: Merge iceage code of Pierre Rampal
1233      * update/change/correct ice age calculations
1234      * add age updates for pathological cases
1235      Probably needs more testing...
1236    
1237    checkpoint62x (2011/05/13)
1238    o pkg/mom_vecinv:
1239       high-order vorticity scheme: use interior masks (maskInW & S)
1240       to zero-out (outside OB) gradient of vorticity.
1241    o verification exp.:
1242       turn on "useEnergyConservingCoriolis" (better discretisation) in exp.
1243       hs94.128x64x5 and seaice_obcs ; update results.
1244    o pkg/obcs:
1245      fix bug in OBeta for YZ sections in obcs_exf_load.F
1246    o pkg/ctrl, pkg/shelfice, and optim:
1247      - add new control variable xx_shifwflx (fresh water flux underneath ice
1248        shelves). This is almost as tedious as obcs-ctrl, because the
1249        variables needs its own mask.
1250      - add a cost function term that penalizes the deviation of xx_shifwflx
1251        from the first guess (zero) in analogy to other control variables
1252    o pkg/shelfice:
1253      - start basic adjoint
1254    o pkg/ctrl:
1255      - remove extra 2D field "for good measure" when initializing in
1256        ctrl_set_globfld_[xy/xz/yz].F
1257      - replace hard coded precision 32 (a bug) in ctrl_map_ini_gen by ctrlprec
1258      - improve error messages in ctrl_set_unpack_*
1259    o OBC implementation in momentum:
1260       use interior masks (maskInC,W & S) in momentum S/R:
1261       - multiply divergence, tension and some del^i.u or del^j.v by maskInC
1262       - multiply del2u,del2v by maskInW/S (biharmonic viscosity)
1263       - multiply horiz. grad of vorticity by maskInW/S (in Leith scheme)
1264       - multiply gradient of wVel by maskInW/S in del2w calculation (NonHyd)
1265       Motivation: fix/clean implementation of OBC with biharmonic-viscosity
1266        (and also with Leith/Smagorinsky harmonic-viscosity).
1267       Update output of experiment dome and exp4 (+nlfs).
1268    o exp4 test-exp:
1269      - turn on: nonHydrostatic, exactConserv, viscA4 (with momDissip_In_AB=F)
1270        and prescribe time-varying OB (without pkg/exf) for zonal-velocity
1271        at Western & Eastern Boundaries (+/- 1 per-cent); Also prescribe
1272        time-varying OB at Western-side for wVel (NonHyd); update output.
1273      - add secondary set-up (.nlfs) using NonLin FreeSurf (z*) + mom_vecinv
1274        and biharmonic-viscosity ; also use prescribed time varying OB.
1275    o pkg/obcs:
1276      fix bug in OBWeta,OBWeta indices in obcs_apply_r_star.F
1277    o model/src:
1278      - fix startTime setting when baseTime<>0 & nIter0=0 are specified ;
1279      - initialise startTime & nIter0 with unlikely values: allows to set one
1280        from the other without ambiguity.
1281    o seaice_obcs test-exp.:
1282      add small diffK4T,S to test biharmonic diffusivity with OBCS ; update output.
1283    o pkg/obcs:
1284      - remove calls to OBCS_COPY_TRACER after EXCH for T,S & pTracer:
1285        no longer needed with maskInC,W,S in pkg/generic_advdiff.
1286    o pkg/seaice:
1287      - retired SEAICE_SALINITY and SEAICE_salinity in favor of
1288        SEAICE_VARIABLE_SALINITY and SIsalFRAC, respectively.
1289      - fixed bug in the initialization of sea ice salinity variable HSALT
1290        in seaice_init_varia.F  (removed dependence on ICE2WATR)
1291    o fizhi-cs test exp.:
1292       switch reference output convention for these 2 non-standard test-exp,
1293        from: pgi  6.1-5 on faulks (FC.6, -of linux_ia32_pgf77+authors_fc5)
1294          to: ifort 11.1 on baudelaire (FC.13, -of linux_amd64_ifort11)
1295       reason: faulks might get retired soon and pkg/fizhi has still Pb with gfortran
1296    o model/inc:
1297      - change type of PmEpR array (from _RS to _RL) to fix restart (with "-use_r4")
1298        of exp. global_ocean.90x40x15 (Suncronous time-stepping + Real-FW + NonLin-FS)
1299    o pkg/seaice:
1300      - fix calculation of saltFlux and saltPlumeFlux when using SEAICE_SALINITY
1301    o verification/lab_sea, 1D_ocean_ice_column, seaice_obcs, global_ocean.cs32x15
1302      - updated output*.txt files due to bug fixes in salt, saltPlumeFlux,
1303        and initial HSALT
1304    
1305    checkpoint62w (2011/04/26)
1306    o pkg/mom_fluxform:
1307      - fix calculation of del2u & del2v (no-slip BC) when using Non-Lin Free-Surf.
1308      - use parameter "sideDragFactor" in no-slip BC side-drag part.
1309      - update output of exp. global_ocean.90x40x15
1310    o pkg/mom_vecinv:
1311      mask del2u & del2v (no effect on results, but cleaner & closer to mom_fluxform)
1312    o update seaice exp.:
1313      use more consistent parameter values (remove "backward compatability only":
1314       ICE2WATR, SEAICE_lhSublim, SEAICE_cpAir, SEAICE_rhoAir + set rhoConstFresh)
1315      related to thermodynamics seaice. Update output (fwd+AD) of exp.:
1316       1D_ocean_ice_column (x2), lab_sea (x8), ioffline_exf_seaice (x2) & seaice_obcs
1317    o update test-exp global_ocean.90x40x15:
1318      o use default CD_CODE_OPTIONS file (Adams-Bashforth on CD Mom & Coriolis).
1319      o increase Overlap size from 2 to 3 (to allow to test bi-harmonic Visc.)
1320      o new pickup-files from a 100.yr run with pkg/down_slope (input.dwnslp params)
1321      o turn on zStar & viscA4 in standard set-up (dir input/)
1322        and update output files: output.txt & output.dwnslp.txt
1323    o new AD-test experiment: obcs_ctrl
1324      (From Matt MITgcm_Contrib/SOSE/BoxAdj) to test OBCS as control vector.
1325    o pkg/dic:
1326      fix two bugs in handling water vapour pressure in carbonate chemistry
1327      and air-sea fluxes. Found by Val Bennington and Galen McKinley
1328      (add DIC Option = WATERVAP_BUG to recover old results)
1329      update output of tutorial_global_oce_biogeo (fwd+AD) & tutorial_dic_adjoffline
1330    o adding allowInteriorFreezing option to check for water below freezing point
1331      at depth and bring the negative heat anomaly to the surface level
1332    o pkgs _fields_load:
1333      - extend GET_PERIODIC_INTERVAL to deal with non-periodic case (from pkg/rbcs)
1334      - use new S/R GET_PERIODIC_INTERVAL in pkgs:
1335        bulk_force, cheapaml, cfc, dic, obcs (+ ctrl/ctrl_get_gen_rec), offline and
1336        rbcs to get interpolation weights and time reccord number.
1337      - fix multi-threading in aim_fields_load.F
1338      - apply EXCH to temp arrays [0,1] after reading in dic_fields_load.F
1339    o external_fields_load:
1340      new S/R GET_PERIODIC_INTERVAL to calculate which time-record (and linear
1341       interpolation weights) to use in a periodic time-series ; do not divide by
1342       time-step to convert to integer:
1343       - this fixes case where externForcingPeriod is not multiple of time-step
1344          (Thanks to Christopher L. Wolfe)
1345       - this fixes case where externForcingPeriod is an odd multiple of time-step
1346         (was wrong by half of time-step); update results of tutorial_global_oce_in_p.
1347      store index of time-record which is currently loaded:
1348       - works without any assumption on sequence of calls to EXTERNAL_FIELDS_LOAD ;
1349       - needed for the adjoint but not yet used because of extensive recomputations;
1350         (to be fixed soon)
1351    
1352    checkpoint62v (2011/04/02)
1353    o verification/1D_ocean_ice_column added to test Ian Fenty's
1354      pkg/seaice_growth.F modifications for improving sea ice code differentiability
1355    o update output of exp4, internal_wave, seaice_obcs, tutorial_plume_on_slope
1356      (new velocity statistics after changing maskInW & maskInS definition)
1357    o pkg/generic_advdiff with OBCS:
1358      use maksInW & maskInS in advective flux and in biharmonic diffusion calculation:
1359      equivalent to assumption of no tracer gradient outside the OB region.
1360      This will affect the results if using obcs+biharmonic diffusion.
1361      update output_adm.txt of experiment bottom_ctrl_5x5 (not expected since no obc)
1362    o pkg/obcs:
1363      change definition of maskInW & maskInS: leave OB edges inside (maskIn=1)
1364      (e.g., maskInW(OB_Ie)=1 ) so that velocity normal-component at OB is still
1365      in Interior region. No impact on solution but affects Velocity monitor stats.
1366    o pkg/ptracers (adjoint)
1367      New option AUTODIFF_PTRACERS_SPLIT_FILES for writing separate
1368      tape file for each tracer
1369    o model/inc/src and pkg/autodiff: add parameters that allow to turn
1370      of parts of the adjoint code at run time. For now, there are only
1371      useKPPinAdMode, useGMrediInAdMode, and useSEAICEinAdMode. These
1372      parameters are set in data.pkg.
1373      This is the lazy coward's version of doing this, but still useful for
1374      debugging. In order to do it right, everything needs to be moved to
1375      pkg/autodiff.
1376    o pkg/autodiff: fix global_sum_tile_ad.F by resetting adsumPhi at
1377      the end; this fixes the adjoint balancing code for open boundaries.
1378    o pkg/ctrl:
1379      - change behavior of xx_${varname}period to be analogous to exf-conventions:
1380        xx_${varname}period =   0.,  means time-independent control part
1381        xx_${varname}period = -12., means one-year-periodic monthly control part
1382      - introduce helper routine ctrl_init_rec (part of ctrl_init.F) to
1383        clean up ctrl_init a little, remove unused variables
1384      - ctrl_init: fixed the handling of the start/endrec for obcs-variables
1385      - move "call cal_GetMonthsRec" from s/r ctrl_get_gen to s/r ctrl_get_gen_rec
1386    
1387    checkpoint62u (2011/03/15)
1388    o model/src:
1389      - for the adjoint, change NonLin-FreeSurf initialisation sequence: fill-in
1390        h0Fac from INITIALISE_FIXED and reset hFac to h0Fac in INITIALISE_VARIA ;
1391      - in initialise_varia.F (except for ALLOW_DEPTH_CONTROL) remove 2nd call to
1392        INI_DEPTHS, INI_MASKS_ETC & INI_LINEAR_PHISURF.
1393    o pkg/ctrl/obcs/ecco:
1394      - remove obsolete, unused, and partially broken code:
1395        ctrl_obcsvol/ctrl_obcsbal/ctrl_volflux and code within
1396        ALLOW_CTRL_OBCS_BALANCE
1397      - put a stop statement into ecco/cost_obcsvol.F, but also add
1398        cost_obcsvol to ecco_ad_diff.list
1399    o pkg/ecco: fix counting cost function contributions for obcs (code
1400      by Matt M.) and diffkr for diagnostics
1401    o pkg/ecco, pkg/ctrl, pkg/grdchk:
1402      add cost penalty terms for initial uvel, vvel, eta controls
1403      and I/O for prior error files
1404    o pkg/mdsio:
1405       move mds_check4file.F from eesupp/src to mdsio_check4file.F ; add option
1406       (new argument) to check for tiled file in mdsioLocalDir : this fix the
1407       restart from pickup_som , pickup_dic (& dic_co2atm) with mdsioLocalDir.
1408    o pkg/ctrl:
1409     - ctrl_obcsbal.F, ctrl_obcsvol.F: replace last calls of ctrl_getrec by
1410       ctrl_get_gen_rec, put a stop statement into ctrl_getrec. Remove
1411       unused and superfluous variables
1412     - ctrl_get_gen_rec.F: catch the case of xx_genperiod=0.
1413  o pkg/ecco  o pkg/ecco
1414   - enable adjoint of Stevens OB   - enable adjoint of Stevens OB
1415  o pkg/ctrl/ecco/grdchk:  o pkg/ctrl/ecco/grdchk:
1416    - remove global declaration of tmpfldx/yz and tmpfldx/yz2.    - remove global declaration of tmpfldx/yz and tmpfldx/yz2.
1417      Fortunately, we do not have any tests for the numerous cpp-flagged      Fortunately, we do not have any tests for the numerous cpp-flagged
1418      option of "obcs as control parameters" so we will never know      option of "obcs as control parameters" so we will never know
1419      if this is an improvement (but at least now things compile).      if this is an improvement (but at least now things compile).
1420    - remove an obsolete initialization from ecco_cost_init_barfiles.F    - remove an obsolete initialization from ecco_cost_init_barfiles.F
1421    - fix some problems within never used ifdefs to make the code compile    - fix some problems within never used ifdefs to make the code compile
1422  o pkg/obcs:  o pkg/obcs:
1423   - Refine Interior mask definition to work with more complex OB (e.g.   - Refine Interior mask definition to work with more complex OB (e.g.
1424     if OB_Ie < OB_Iw); In case default setting is not sufficient, allows to     if OB_Ie < OB_Iw); In case default setting is not sufficient, allows to

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