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revision 1.42 by heimbach, Fri Jul 13 20:20:12 2001 UTC revision 1.1675 by heimbach, Mon Jun 25 19:25:41 2012 UTC
# Line 1  Line 1 
1  $Header$  $Header$
2    $Name$
3    
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6  checkpoint40pre3  
7    o verification/tutorial_tracer_adjsens/
8      - compile with ALLOW_CG2D_NSA
9      - run with nonlinFreeSurf=3
10      - update reference output_adm.txt
11    o tools/genmake2:
12      - add "-DHAVE_NETCDF" to the DEFINES list when NetCDF is available ;
13        refine usePROFILES switching off (only when NetCDF is not available).
14    o verification (atmospheric set-up):
15      - change eosType='IDEALGAS' to eosType='IDEALG' to match variable declaration
16    o pkg/profiles : refine profiles and files handling.
17    o model/src and pkg/ecco : introduce run-time switch usePROFILES.
18    o model/src/the_main_loop.F, forward_step.F and pkg/exf/EXF_OPTIONS.h :
19      - changes to use model/src/the_main_loop.F rather than the ecco version
20        in ecco type adjoint runs.
21    o model/src:
22      - move computation of recip of grid distance & area from INI_MASKS_ETC to INI_GRID
23      - move setting of h0Fac[C,W,S] from INI_LINEAR_PHISURF to INI_MASKS_ETC
24      - update_masks_etc.F: rename SMOOTH*_R4,R8 function to the corresponding type (RS,RL)
25    o model/src:
26      - fix S/R UPDATE_CG2D for ALLOW_DEPTH_CONTROL case (was empty before);
27        update output of test experiment bottom_ctrl_5x5.
28    o pkg/generic_advdiff:
29      - implement vertical bi-harmonic diffusion (for now, only for T & S and
30        only explicitly).
31    o verification/bottom_ctrl_5x5/
32      update reference output (results changed quite some time ago,
33      not sure when; but new reference results look ok in terms of grdchk)
34    o verification/1D_ocean_ice_column/
35      For verification purposes, the exact adjoint rather than an approx.
36      should be used (e.g., to comare against F.D. or TLM).
37      removed autodiff_inadmode*_ad.F routines in code_ad/
38      Update results/ accordingly.
39    o pkg/cal:
40      - change cal_getdate.F so that output date is function of input time only
41        (less ambiguous, not mixed up with input iteration number).
42      - fix calendarDumps for non-zero phase-lag (S/R CAL_TIME2DUMP).
43    o pkg/diagnostics:
44      - implement calendarDumps also for stats-diags
45      - implement calendarDumps also for snap-shot output (negative freq)
46      - for now, ignores calendarDumps if non-zero phase-lag.
47    
48    checkpoint63n (2012/06/04)
49    o model/src:
50      - recompute rSurfW & S to ensure consistent column thickness (needed for rStar)
51        between Sum_k(hFac*drF) and rSurf-rLow, for now only when using pkg/shelfice;
52      - use h0FacC, W & S to compute hFac_surfC, W & S in calc_surf_dr.F (more
53        similar to calc_r_star.F); update results of experiment internal_wave and
54        tutorial_global_oce_in_p (affected @ truncation level).
55    o pkg/shelfice:
56      - add parameterisation of advective-diffusive flux into the ice shelf
57        according to Holland and Jenkins (1999), eq.22-33, as suggested by Jan De Ryd
58      - simply eps3/3a computation
59    o eesupp:
60     - add new CPP option (DISCONNECTED_TILES) to disconnect tiles (no exchange
61       between tiles, just fill-in edges assuming locally periodic subdomain) and
62       add corresponding exchange subroutines (EXCH0);
63     - new CG-solver version (_EX0) for disconnected-tiles special case.
64    o model/src (CG-solvers):
65     - modify Single-Reduction version (CG2D_SR) in case cg2dMaxIters is reached
66       (similar final residual output and max-Iter number as with standard version);
67     - allows to store and use lowest-residual solution (standard & _SR versions);
68     - cleaning up (remove old, commented out code, LETS_MAKE_JAM ...).
69     - by default, also compile CG2D_SR version (define ALLOW_SRCG in CPP_OPTIONS.h)
70    o eesup/src:
71     - global_vec_sum.F cleaning: add a BARRIER ; update comments ; remove ndef
72       ALWAYS_USE_MPI (no longer needed after fixing usingMPI settings - March 2012)
73    o pkg/salt_plume added to lab_sea/input_ad.noseaicedyn
74    
75    checkpoint63m (2012/04/27)
76    o pkg/shelfice:
77     - account for partical cells in surface level below ice-shelf for hydrostatic
78       pressure calculion (set uniformFreeSurfLev to F); update isomip experiments.
79    o ad test experiments:
80     - update and rename to "ad_optfile.local" local AD-optfile specific to a
81       particular adjoint verification experiment (in verification/*/code_ad/)
82    o pkg/seaice & pkg/exf:
83     - Part two of ECCO-CLIVAR code merges.
84       Completes merge of seaice area relax. code.
85       Requires unified CPP option EXF_ALLOW_SEAICE_RELAX
86       to be set in EXF_OPTIONS.h since this pkg controls its I/O
87       (and avoids second CPP option in SEAICE_OPTIONS.h)
88     - change default value of costIceStart & costIceEnd to a valid date.
89     - add snowPrecip to HSNOW in seaice_growth
90    o pkg/ptracers:
91     - move ptracers summary and setup check into separated S/R ; add a check for
92       valid PTRACERS_Iter0 value (error+stop or just warning).
93    o pkg/cal (+ pkg/ecco):
94     - avoid calling a S/R with 2 times the same arg (FWD: unless both are only used
95       as input; and for AD, unless both are not differentiable (e.g., k index)).
96    o model/src:
97     - define internal flag "uniformFreeSurfLev" (=T when free-surface level-index
98       is everywhere k=1) to speed-up some calculations (by pass kSurf reference);
99       temporary set to usingZCoords value (to be changed to F when using shelfice).
100     - hydrostatic pressure: implement partial cell near the surface also for
101       Z-coordinates (for the case where uniformFreeSurfLev=F); replace test on
102       usingZCoords with test on uniformFreeSurfLev where needed (in NonHyd code).
103    o pkg/ctrl/ctrl_init.F:
104     - add a formal parameter to s/r ctrl_init_rec to print
105       xx_$(ctrl_valiable)_file for easier debugging
106     - move call of cal_* routines into the if-block where they are really
107       needed so that xx_$(ctrl_variable)_period can be 0 or -12 without having
108       to specify a startdate
109    o pkg/seaice:
110     - update comments in SEAICE_OPTIONS.h (+ similar update of lab_sea/code and
111       global_ocean.cs32x15/code versions).
112     - turn on seaice Multi-category (in data.seaice, SEAICE_multDim=7) for
113       verification experiment global_ocean.cs32x15.seaice and update results.
114    o pkg/exf:
115     - new S/R EXF_GETFIELD_START to return starting-time of a forcing field
116       (according to useExfYearlyFields).
117    o pkg/cal:
118     - move calendar setting & summary (previously in cal_readparams.F) into new
119       S/R CAL_INIT_FIXED to be called later in the initialisation process, once
120       length of the simulation is set (after SET_PARMS call); This is an attempt
121       to fix Pb when, e.g.: pkg/longstep, modifies the length of the run.
122     - For safety: keep a record of pkg/cal parameter settings status
123               to allow to STOP if one pkg/cal S/R is called too early.
124     - add a stop in all basic pkg/cal subroutines if called before setting is done.
125     - modify cal_getdate.F: stop when nothing was returned;
126       if called with myIter=-1, simply retrun modelBaseDate (1,2 = startDate_1,_2);
127       this allows to remove "cal.h" from seaice_read_parms.F & init_mnc_vars.F.
128    
129    checkpoint63l (2012/04/04)
130    o pkg/bbl:
131      - fix call to FIND_RHO_2D in bbl_calc_rho.F (case multi-tiles per proc);
132        update global_with_exf output.yearly.txt file.
133    o pkg/cal:
134      - start to clean-up cal_set.F ; fix for the case where baseTime is non-zero.
135      - remove 2 unsused and very short (1 line only) functions ;
136      - remove unsused subroutines from AD-Diff list.
137    o model/src:
138      - start to implement clean wait to stop in initialization S/R (config_check.F,
139         packages_check.F, ini_parms.F and pkg/obcs/obcs_check.F + pkg/mypackage)
140    o folowing PRINT_MESSAGE changes:
141      - remove reminder multiple print to the same file (STDOUT) when multi-threads.
142    o pkg/bbl:
143      - modification so it can work with z*
144      - replace deltaT with dTtracerLev(k) for asynchronous time stepping
145      - global_with_exf/input.yearly verification; changes output.yearly.txt
146    o eesupp/src:
147      - PRINT_MESSAGE: use OpenMP critical instruction (similar to PRINT_ERROR);
148        writing to unit 0 (if unit=errorMessageUnit) extended to the case myThid=1
149      - CHECK_THREADS: specific code if using OpenMP threading: improve checking of
150        # of threads across processors (e.g., different env OMP_NUM_THREADS setting)
151      - improve special preliminary call to EESET_PARMS (if eedata is read 2 times).
152      - when using MPI, always set usingMPI=T ; set default accordingly and stop
153        if not consistent.
154      - ALL_PROC_DIE: add a BARRIER after MPI_FINALIZE call ; skip this when thread
155        argument is zero (in case called within single-thread section).
156    o pkg/fizhi:
157        clean-up turbulence cold-start switch: decided in fizhi_init_vars.F, stored
158        in common bloc (fizhi_coms.h) and then passed as argument up to S/R TURBIO.
159    o pkg/exch2:
160      - add argument "updateCorners" to S/R exch2_get_uv_bounds (enable to
161        activate EXCH_IGNORE_CORNERS in vector EXCH S/R).
162      - switch 1rst EXCH call to IGNORE_CORNERS (instead of UPDATE_CORNERS)
163        but keep the 2nd with UPDATE_CORNERS: this prevents overwriting good data
164        with bad ones coming from a not-yet-updated halo.
165        This should fix the problem when sNx <> sNy and GCD(sNx,sNy) < 2*Olx.
166    o pkg/frazil:
167        move FrzForcT diag from frazil_diagnostics_state.F to frazil_calc_rhs.F
168        http://mitgcm.org/pipermail/mitgcm-devel/2012-March/005384.html
169    o model/src/config_check.F: add a check for OLx>sNx/OLy>sNy
170    o verification/lab_sea
171      * #undef SEAICE_EXCLUDE_FOR_EXACT_AD_TESTING
172      * #define ALLOW_SST_CONTROL & ALLOW_SST_CONTROL
173      * nTimeSteps 3 -> 4
174      * changed reference output accordingly
175    o pkg/ctrl:
176      * fix ctrl_get_gen for xx_sst, xx_sss
177    o pkg/fizhi:
178      - fix 2 calls to S/R GRD2MSC (argument igrd) in update_earth_exports.F
179        update results of exp. fizhi-cs-32x32x40 (fail with only 6 digits for cg2d)
180      - by default, use new version of S/R GETPWHERE (#define TRY_NEW_GETPWHERE);
181        fix few out-of-bounds indices in referencing vars (initialise igrd to 1);
182        clean-up fizhi_turb.F (remove unused & uninitialised qdiaglsm array).
183    o pkg/gmredi:
184      - add diagnostic of Redi (main diagnonal) vertical diffusive flux of Temp
185    o pkg/fizhi:
186      - fix few initialisation and multi-tile Pb: aqualev & gridalt now pass the
187        (old)aces open64 tuv test.
188    o pkg/icefront: fix bug and reorder loop in icefront_init_varia.F
189    o pkg/mom_vecinv:
190      - fix 1 loop range in mom_vecinv.F to be like all the other loops which
191        set/update gu,gv/Diss (fix Pb of uninitialised fVerUkp in admom_vecinv
192        with non-lin free-surf).
193    o model/src: move k-loop outside of i/j-loops when (re-)computing R_low
194      in ini/update_masks_etc.F in order to avoid -O3 optimization problems with
195      some compilers (gfortran 4.6.0 on MacOS)
196    o momentum:
197      - separate fVer?(:,:,kUp) & fVer?(:,:,kDown) in argument list of MOM_FLUXFORM
198        & MOM_VECINV subroutines (to help TAF). This fixes Pb of uninitialised
199        fVer?(kUp) in admom_fluxform with non-lin free-surf or bottom control.
200    
201    checkpoint63k (2012/03/17)
202    o model/src:
203       - selectAddFluid (ALLOW_ADDFLUID): add missing term in horizontal momentum
204         flux-form (mom_fluxform.F) and vertical momentum (calc_gw.F) equations.
205       - SOLVE_DIAGONAL: switch default to use adjoinable & vectorized version
206         (#undef SOLVE_DIAGONAL_LOWMEMORY); update output of exp. front_relax.bvp.
207    o model/src: solve_*diagonal.F
208       - replace division with multiplication by inverse (similar to original version)
209         update output of AD exp. global_ocean.90x40x15.
210       - fix pkg/gmredi/gmredi_calc_psi_bvp.F & pkg/ggl90/ggl90_calc.F
211         to enable the use of the vectorized & differentiable solve_tridiagonal.F
212       - test exp. global_ocean.90x40x15/input_ad: switch to advection scheme 20 for
213         vertical advection (to get solve_tridiagonal tested in AD mode).
214    o pkg/seaice: ECCO-CLIVAR merge:
215      1. seaice AREA relaxation
216         * CPP option: SEAICE_ALLOW_AREA_RELAXATION
217         * runtime flag: SEAICE_tauAreaObsRelax
218      2. modified global mean cost imbalance code: CPP option
219          ALLOW_SSH_GLOBMEAN_COST_CONTRIBUTION
220    o another iteration on solve_*diagonal.F
221       Make choices independent of AUTODIFF
222       Default will be the adjoinable vectorized version.
223       Alternative choices are:
224       * non-adjoinable original version with low memory footprint:
225         #define SOLVE_DIAGONAL_LOWMEMORY
226       * still adjoinable but does not vectorize (k as inner-most loop):
227         #define SOLVE_DIAGONAL_KINNER (keeping SOLVE_DIAGONAL_LOWMEMORY undef)
228    o testreport
229     - add option to use a home made wrapper around "make"
230     - remove MITGCM_IEEE env. variable (no longer active)
231    o pkg/shelfice
232     - improve computation of friction velocity for velocity dependent
233       exchange coefficients: include velocities into SHELFICEBoundaryLayer
234       block to average velocities vertically
235     - add TAF store directives for SHI_ALLOW_GAMMAFRICT
236    o Modify diagonal solvers, now three versions (upon request):
237      #ifndef SOLVE_DIAGONAL_AUTODIFF
238        1. default version (dating back a while ago)
239      #else /* def SOLVE_DIAGONAL_AUTODIFF */
240      # ifdef SOLVE_DIAGONAL_KINNER
241        2. adjoinable version with k-innermost loop (G. Forget)
242      # else
243        3. adjoinable vectorized version of 2.
244      # endif
245      #endif /* SOLVE_DIAGONAL_AUTODIFF */
246      All flags are currently set within routines, but could/should be moved to CPP-options.
247      Array bounds for 1. are as before, for 2.,3. cover the entire domain
248      (could be changed for 1. too).
249    o verification/lab_sea (fwd):
250      - update the 4 fwd lab_sea test experiment: no longer SEAICE_GROWTH_LEGACY,
251        use 7 categories (except hb87), new solve4temp params (except salt_plume),
252        constant salinity (=4) or variable salinity (salt_plume) done through
253        SItracer.
254    o pkg/seaice:
255      - rename parameters: SIsalFrac to SEAICE_saltFrac & SIsal0 to SEAICE_salt0;
256      - remove old parameters ( SEAICE_freeze, SEAICEturbFluxFormula, SEAICE_gamma_t,
257         SEAICE_gamma_t_frz, SEAICE_availHeatTaper & SEAICE_availHeatFracFrz)
258        from SEAICE_PARMS.h ; still need to fix seaice_cost_sst.F (broken when
259        SEAICE_freeze got retired) but already better than previously with
260        SEAICE_freeze=123456.7 deg.C;
261      - move setting of facOpenGrow/Melt from SEAICE_INIT_FIXED to SEAICE_READPARMS
262        (safer multi-threaded setting); always set SEAICEuseEVP;
263      - setting of ocean-ice turb. flux coeff: moved from SEAICE_CHECK to
264        SEAICE_READPARMS & SEAICE_INIT_FIXED (this fixes wrong summary report);
265        stop if multiple specifications for the same coeff; make sure default
266        SEAICE_mcPheePiston is compatible with drF(1) & deltaT.
267    o pkg/obcs:
268      - allow to switch to upwind 1rst order advection scheme for the advective
269        flux computation at the open-boundary; disabled for adjoint built.
270    o pkg/ptracers:
271      - rename PTRACERS_RESTART.h -> PTRACERS_START.h
272      - rename ptracers_fields_blocking_exchanges.F -> ptracers_fields_blocking_exch.F
273      - add parameter to decide when to start a tracer; use internal flag to
274        know which tracer to step-forward; switch this internal flag at the top
275        of forward_step.F (new S/R PTRACERS_SWITCH_ONOFF); for now, not enabled
276        for adjoint built.
277    o pkg/seaice:
278      - add SEAICE_SIZE.h anywhere in the code where SEAICE.h is included ;
279      - move MULTDIM declaration and setting from SEAICE.h to SEAICE_SIZE.h ;
280      - keep experiment offline_exf_seaice truly single category (set MULTDIM=1).
281    o pkg/ecco:
282      - fix writing of output file DiagnosCost_ClimSalt/Theta
283        and DiagnosCost_DriftSalt/Theta (if multi-tiles per proc).
284    o pkg/seaice:
285      - add missing initialisation of COR_ICE array in dynsolver.F
286      - merging SEAICE_MULTICATEGORY define and undef cases. Now the same code is
287        compiled either way, and is tested in all exps (multidim was only tested
288        in lab_sea ad before).
289      - cosmetic change to prepare for future addition of ITD. no change to results.
290        no defaults change.
291      - added run time param SEAICE_multDim (7 for SEAICE_MULTICATEGORY, 1 otherwise).
292      - by lack of adequate verification experiments, I further used custom versions
293        of global_ocean.cs32x15 to test multicat or not, with pickup or not. All
294        should be correct.
295      - avoid recomputations in ad.
296    o array initialisation in adjoint mode:
297      1) pkg/mom_common/mom_calc_ke.F:
298        add full array initialisation of KE inside mom_calc_ke.F (ALLOW_AUTODIFF_TAMC):
299        The S/R which calls MOM_CALC_KE initialises KE but in some recomputation
300        part this initialisation is gone, resulting in Floating Point Exception
301        (caught by open64 compiler with debug option).
302      2) model/src/convective_weights.F
303        set output convectCount over the full array range (instead of doing
304        an update): this fix a similar issue when called within recomputation (adjoint)
305        which could by-pass the initialisation (normally done in the caller S/R).
306    o pkg/seaice:
307      - final version of turbulent flux params, as agreed at MIT ice meet:
308           SEAICE_mcPheePiston (default is ~ 0.000875)
309           SEAICE_mcPheeTaper (default is 0.)
310           SEAICE_frazilFrac (defualt is 1.)
311           SEAICE_mcPheeStepFunc (default is false)
312      - changes results at trunction error level
313      - ifdef SEAICE_EXTERNAL_FLUXES, disallow SEAICE_waterAlbedo
314    o added pkg/frazil:
315      - see frazil_description.tex for details
316      - verification experiment is global_with_exf/input.yearly; changes output.yearly.txt
317    o pkg/shelfice/shelfice_thermodynamics.F
318      - fix exponents for velocity dependent exchange coefficients: change
319        from 2/3(=0) to 0.66666666666666667
320      - move computation of velocity dependent exchange coefficients into
321        separate loop, so that it applies to both thermodynamics
322      - move some divisions by constants out of loops
323    
324    checkpoint63j (2012/02/16)
325    o pkg/seaice:
326      - overhaul of seaice_summary.F after feb 2012 clean-up of seaice_growth.F etc.
327      - SItracer:  added run time params, and allow coupling to ocn salinity.
328    o pkg/seaice: remove (almost) all divisions by constants within loops
329      in seaice_growth.F and seaice_solve4temp.F, this changes (only) the cg2d
330      results of global_ocean.cs32x15.seaice from 16 to 11 digits (but only
331      those, caused by 1/QI -> recip_QI) -> update output.seaice.txt,
332      output_adm.seaice_dynmix.txt and also lab_sea: output_adm.evp.txt
333    o pkg/seaice :
334      - simplify McPhee tapering, and allow to use it with SEAICEturbFluxFormula
335        = 1 or 2, using newly added run time parameter SEAICE_availHeatTaper.
336      - fix d_AREAbyATM, d_AREAbyOCN, d_AREAbyICE diags I broke in r1.148.
337      - add permanent SItflux diag that corresponds to TFLUX but includes
338        ice+snow. Hence SItflux-TFLUX should match the ice+snow heat budget.
339      - allow activation/testing of a fix for suspected missing term in
340        ocn-ice heat budget (to be confirmed). To test this, you want to
341        undef SEAICE_DISABLE_HEATCONSFIX, and then set the run time param
342        SEAICEheatConsFix to .TRUE. that also allows the 'SIaaflux' diagnostic.
343      - no change in results, fwd or ad.
344    o global_ocean.cs32x15/results: 3 changes following from the pkg/seaice commit below:
345      - switch to variable freezing point.
346           Results change : cg2d -> 1 digits; ad -> 3-6-6 digits.
347      - bug fix : the sublimation term that was missing is now activated.
348           Results change : cg2d -> 2 digits; ad -> 8-6-6 digits.
349      - bug fix : flooding sign term for SIsal0.NE.0.
350           Result change : cg2d -> 8 digits; ad -> 11-12-9 digits.
351    o pkg/seaice:
352      - unified freezing point treatment : the old SEAICE_VARIABLE_FREEZING_POINT
353        is now the default, and the old default constant freezing point is recovered
354        with SEAICE_tempFrz0    = -1.96,
355             SEAICE_dTempFrz_dS = 0.,
356      - retire SEAICE_freeze (= the old way of specifycing the constant freezing point)
357      - remove ALLOW_SEAICE_FLOODING brackets; run time switch is already there.
358      - bug fix (thanks to M. Losch) : the sublimation term that was missing is now
359        activated. To reproduce old results with this bug define SEAICE_DISABLE_SUBLIM.
360      - bug fix (silly me) : flooding sign term (seaice_growth.F r 1.149line 1211)
361        was wrong for SIsal0.NE.0. Changes cs32x15 results (see above item for detail).
362      - bug fix (thanks to O. Jahn) : area loss for melting  got messed up in
363        seaice_growth r149 for legacy branch (no results change).
364      - introduce SEAICE_CAP_SUBLIM : caps sublimation heat flux in solve4temp (code
365        from I. Fenty).
366      - results did not change except for global_ocean.cs32x15, mostly due to the
367        switch to variable freezing point (see above item for detail).
368    o pkg/thsice:
369      - fix and simplify interface to salt_plume pkg ; diagnose directly amount of
370        seawater freezing in thsice_calc_thickn (not used).
371    o pkg/seaice: turbulent flux term specification via run time params.
372      - replace CPP switches with run time switches to facilitate testing
373      - retired CPPs : MCPHEE_OCEAN_ICE_HEAT_FLUX,
374                       GRADIENT_MIXED_LAYER_TURBULENCE_FACTOR
375      - added runtime parameter : SEAICEturbFluxFormula
376      - move Mcphee constants to SEAICE_PARAMS.h
377      - seaice_readparms.F : read turbulent flux term params (SEAICEturbFluxFormula;
378                 SEAICE_availHeatFrac/Frz, or SEAICE_gamma_t/_frz if apply);
379                 remove seaice_summary call (moved to seaice_init_fixed)
380      - seaice_init_fixed.F : set SEAICE_availHeatFrac/Frz depending on
381        SEAICEturbFluxFormula, and seaice_summary call (moved from seaice_readparms)
382      - seaice_summary.F : add missing report of read turbulent flux term set up
383                           and SITRACER.
384      - seaice_check.F : check range; inform and stop if retired CPPs are used
385                         (incl. SEAICE_AGE).
386      - seaice_growth.F : unified use of SEAICE_availHeatFrac/Frz, without
387             CPP switch, same computation as before for the different options.
388      - change results at the truncation level.
389    o pkg/seaice:
390      - remove un-used parameters LAD & MAX_TICE ; add new run-time parameters:
391        useMaykutSatVapPoly (default=F), postSolvTempIter (default=2) and
392        SEAICE_wetAlbTemp (default=-1e-3). Remove option SEAICE_SOLVE4TEMP_LEGACY.
393      - update verification/*/input*/data.seaice:
394        to reproduce previous results with former #defined SEAICE_SOLVE4TEMP_LEGACY
395        code, set useMaykutSatVapPoly=T & postSolvTempIter=0 ;
396        and to reproduce previous results with former non-SOLVE4TEMP_LEGACY code,
397        set SEAICE_wetAlbTemp=0 & SEAICE_snowThick=0.
398    o pkg/seaice/seaice_solve4temp.F (SOLVE4TEMP_LEGACY):
399      - remove LEGACY code for solving for tsurf (A1,A2,A3) but maintain the same
400        algorithm (same choice: useMaykutPolySatVap=T, postSolvTempIter=0);
401        difference in results only due to machine truncation.
402      - remove MAX_TICE (tsurf is always =< TMELT anyway); keep MIN_TICE if using
403        MaykutPolySatVap; keep MIN_LWDOWN.
404      - adapt SEAICE_MODIFY_GROWTH_ADJ code (untested) to non-legacy formulation.
405      - update output of verification exp. lab_sea (4 fwd: 11 cg2d digits except hb87,
406        + 3 AD: 6 digits except evp) and offline_exf_seaice.seaice (12 digits).
407    o pkg/salt_plume:
408      - isolate saltPlumeFlux array exch into a specific S/R called from
409        do_oceanic_phys.F
410      - add interface to pkg/salt_plume (filling of saltPlumeFlux) in pkg/thsice.
411    o verification:
412      - move untested set-up to MITgcm_contrib/verification_other.
413    o pkg/seaice:
414      - retire old way of SEAICE_AGE. Now replaced with ALLOW_SITRACER.
415    o pkg/seaice:
416      - seaice_solve4temp.F (keeping results unchanged):
417        * add 2 future run-time params to select which saturation vapor pressure
418          formula is used and how post-iteration fluxes are set.
419          Temporary set these 2 params according to option SOLVE4TEMP_LEGACY;
420        * New piece of code (not used) to update surf. atmos. heat flux F_ia using
421          the linearized expression to stay consistent with tsurf finding.
422      - seaice_freedrift.F avoid floating exception in sqrt(y) since y=sqrt(x*x)-x
423        can be < 0.
424    o pkg/seaice/seaice_solve4temp.F (SOLVE4TEMP_LEGACY undef):
425      - remove from F_ia (and from it's derivative dFiDTs1) the contribution of
426        conductive heat flux F_c , and add it explicitly when updating tsurf as
427        solution of: Fc = Fia + d/dT(Fia - Fc) *delta.tsurf
428        so that now F_ia has a consistent meaning through the entire routine.
429        This causes differences at truncation level: update output of fwd exp.
430        global_ocean.cs32x15.seaice.
431    o pkg/seaice:
432      - lots of editing/cleaning in seaice_solve4temp.F + better documentation
433        of arrays, sign/direction of fluxes; no effect on results.
434      - replace hard coded 273.16 (=previous value of celsius2K) by celsius2K
435        in seaice_budget_ocean.F & seaice_solve4temp.F (SOLVE4TEMP_LEGACY part);
436        note: this should have been done before changing celsius2K default.
437      - to keep results unchanged, add back old value of celsius2K in verification
438        exp. input*/data : lab_sea (AD), offline_exf_seaice (fwd+AD) & seaice_obcs
439      - replace hard coded seawater freezing temp in seaice_solve4temp.F (part
440        SOLVE4TEMP_LEGACY) of 271.20 (=previous value of celsius2K + default
441        value of SEAICE_freeze) by celsius2K+SEAICE_freeze so that seawater
442        freezing temp is consistent with value in seaice_growth.F ; this causes
443        differences at machine truncation level: update lab_sea AD output (3/4).
444    o pkg/seaice:
445      - mask (in exf_init_fixed.F) atemp,aqh,evap,precip,runoff,lwflx,areamask
446        and climsst/sss even when using seaice (to prevent calculation that might
447        use SST on land); does not affect any verification exp.
448      - apply mask to taux,tauy (in seaice_get_dynforcing.F); update output
449        of lab_sea.fd & lab_sea.hb87 and global_ocean.cs32x15.seaice_dynmix.
450    o pkg/seaice/seaice_growth.F: add mask to avoid non-zero ice thickness
451      over land (non-legacy code)
452    o vectorize salt_plume package:
453      - add extra code to salt_plume_frac and salt_plume_tendency_apply_s
454      - this code computes plumebk everywhere (also over land), thus requires
455        code to avoid divisions by zero and catch the case of kLev=Nr.
456      - efficiency of salt_plume_frac is still sub-optimal
457    o tools (genmake2):
458      - fix makefile NAME specification (option: -makefile NAME) by adding
459        "-f $MAKEFILE" in few places where it was missing including makedepend
460        command (contribution from Paul).
461    
462    checkpoint63i (2012/01/24)
463    o model/src:
464      - add factorized versions of some EOS code to find_rho.F,
465        define USE_FACTORIZED_EOS to turn it on (default for TARGET_NEC_SX)
466    o model/src:
467      - add celsius2K to namelist PARM01; remove unused recip_rhoNil from PARAMS.h;
468      - change default celsius2K from 273.16 to 273.15
469      - to keep results unchanged, add back old value of celsius2K in verification
470        exp. input*/data : aim.5l_cs, 1D_ocean_ice_column, lab_sea (fwd),
471         global_ocean.cs32x15(seaice) & cpl_aim+ocn(input_atm).
472    o model/src: add a little initialisation trick to find_rho.F and find_alpha.F
473      to make TAF generate vectorizable code
474    o pkg/seaice/seaice_evp.F: add code (copied from CICE) that avoids underflows.
475       Turn on by defining SEAICE_EVP_ELIMINATE_UNDERFLOWS. Most compilers
476       have flags that do this more efficiently.
477    o pkg/diagnostics/diagstats_calc.F
478      - for TARGET_NEC_SX fix the treatment of the scaling factor tmpFac=scaleFact
479    o pkg/obcs (with exch2):
480      - derive OB indices in overlap region from OB-InsideMask (in obcs_init_fixed.F)
481        and remove code (in obcs_readparms.F) which was based on EXCH of indices
482        (through buffer) and did not account for exch2 (e.g., CS-grid) topology.
483    o pkg/exf and seaice exp:
484      - change offline_exf_seaice.seaicetd test exp. to use default DIFF1 value (=0)
485        so that switching off area & heff advection flags does not affect results.
486      - change default EXF_LWDOWN_WITH_EMISSIVITY to #define in EXF_OPTIONS.h
487      - keep exp. seaice_obcs & 1D_ocean_ice_column(ad) unchanged (using #undef
488        EXF_LWDOWN_WITH_EMISSIVITY) and, using pkg/exf default emissivities, update
489        results of verification experiments: 1D_ocean_ice_column(fwd),
490        global_ocean.cs32x15.seaice(fwd+ad) & seaice_dynmix(ad), lab_sea (all 8)
491        and offline_exf_seaice (all 4).
492    o pkg/seaice:
493      - remove array YNEG, RIVER, TMIX (replaced by local var) from common block;
494        remove also areaNm1 & hEffNm1 when SEAICE_GROWTH_LEGACY is undef.
495      - fix bug: areaNm1 & hEffNm1 are needed in seaice_growth (SEAICE_GROWTH_LEGACY)
496        but were not filled when resp. SEAICEadvArea=F & SEAICEadvHeff=F and
497        not multi-dim advection;
498      - fix seaice_growth.F to compile with both SEAICE_GROWTH_LEGACY and
499        SHORTWAVE_HEATING #undef.
500    o optim: make Makefile more robust (?)
501    o pkg/obcs:
502      * fix treatment of obcs_read_pickup for TAF
503    o pkg/shelfice:
504      * add missing initialisation of num_shifwflx
505      * new adjoint verification exp. for isomip
506      * change Prandtl and Schmidt numbers from generic formulations
507        (in terms of model diffus. and visc.) to separate runtime
508        parameters, with Holland and Jenkins (1999) default values.
509    o pkg/exf (interpolation):
510      - extended input field (2 rows) near the N & S poles:
511        * fill in with the symetric value (when even Nb of data in longitude)
512        * add average value at the poles only for scalar quantities ; for vector
513          component interpolation, skip the averaging and keep duplicated values,
514          unless the 2 components have same location (uvInterp=T) in which case
515          interpolate the 2 components together using S/R EXF_INTERP_UV.
516      - new S/R EXF_INTERP_UV to interpolate the 2 components of a vector field
517        together: this allows to account properly for local orientation when
518        averaging at N & S pole.
519      - add CPP option EXF_USE_OLD_INTERP_POLE to recover old results regarding
520        exf-interpolation near N & S poles. Undef by default.
521      - add debug check/print on 1rst iter if debugLevel >=2.
522    o pkg/exf:
523      - change masking flags definition (no longer "parameter"), put them in
524        common block and set them in S/R EXF_INIT_FIXED.
525      - change recognized masking flag from s,u,v to c,w,s since the mask
526        to use (maskC,W,S) depends on position on model grid and has little to
527        do with scalar/vector difference; fix masking if using P-coordinates.
528      - fix masking of wind-stress (was wrong if interpolated or read on A-grid)
529        and update results of exp. global_with_exf (x2).
530      - fix setting of zenith-angle table when SHORTWAVE_HEATING is undef.
531    o pkg/obcs
532      - S/R obcs_calc_stevens: fix a small bug (gammat -> gammas where appropriate)
533    o pkg/exf (interpolation):
534      - assume periodicity in X only if input field cover full longitude range.
535      - improve search for lat. index (supposed to be faster, in ~log2(ny) steps,
536        and should vectorise).
537      - fix input lat of the 2 added row (in case we provide N.pole data).
538    
539    checkpoint63h (2011/12/30)
540    o pkg/seaice:
541      - change declaration of UVM from _RL to _RS in order to get B-grid
542        uIce,vIce monitor when _RS = real*4
543    o pkg/offline:
544      - new S/R OFFLINE_RESET_PARMS for resetting main-model params (switch off flags);
545      - compute vertical velocity if not read from file (switch on exactConserv
546        & staggerTimeStep);
547      - fix output of ptracer monitor iter & time for default PTRACERS_monitorFreq.
548    o verification:
549      - update grid-files (in tutorial_held_suarez_cs/input and fizhi-cs-32x32x40/input)
550        with grid-angle generated using "utils/matlab/cs_grid/cubeCalcAngle.m":
551        fix Pb in yG definition @ 2 missing corners (previously yG was averaged);
552      - update output of exp. global_ocean.cs32x15.viscA4 after changing
553        grid-file angles (used here for coriolis-3d);
554      - remove (or gzip) few files not needed to run fizhi-cs experiments.
555    o pkg/exf (vector interpolation):
556      - rotate vector component toward local grid-axis orientation using grid-angles
557        (stored in GRID.h) instead of locally computed rotation angle; keep old code
558        available with exf option EXF_USE_OLD_VEC_ROTATION (undef by default).
559    o pkg/seaice:
560      - allow to compile with exf options ALLOW_ATM_TEMP or ALLOW_DOWNWARD_RADIATION
561        undefined. Fix and remove the stop when ALLOW_RUNOFF is undefined.
562    o pkg/PKG_OPTIONS.h files:
563      - move #include "CPP_OPTIONS.h" just after #include "PACKAGES_CONFIG.h",
564        outside of the #ifdef ALLOW_THISPKG / #endif block.
565      - update verification/*/code/PKG_OPTIONS.h files.
566    o add a verification experiment (offline_exf_seaice/input.seaice) that test
567      the B-grid LSOR solver
568    o pkg/seaice: sort out emissivity and long wave radiation step 2:
569      - add emissivity for snow and ice as new run-time parameters
570        (unfortunately) that default to the corresponding exf values; this
571        changes results in most verification experiments so that for backward
572        compatibility these parameter have to be set explicitly to inconsistent
573        values (ugly);
574      - the exf-flag EXF_LWDOWN_WITH_EMISSIVITY then gets rid off the hard-wired
575        emissivities of 0.97 associated with lwdownloc in S/R seaice_solve4temp
576        until we agree how to handle this bug properly
577    o pkg/exf (interpolation):
578      - add a set of run-time param ({inputfield}_interpMethod), one for
579        each interpolated input field, to select the interpolation method
580        with a value of zero switching off the interpolation;
581      - print interpolation parameters to standard output;
582      - refine exf_check.F accordingly ; stop if USE_NO_INTERP_RUNOFF is defined
583        (to use instead runoff_interpMethod=0 in data.exf).
584      - simplify default setting of interpolation parameters (for all fields,
585        set position to match model grid cell-center position, leading to trivial
586        interpolation in case of regular Lat-Lon grid) and fix for the case of
587        non-uniform delY.
588    o pkg/exf/exf_radiation.F: add the factor ocean_emissivity to lwdown, for
589       within #ifdef EXF_LWDOWN_WITH_EMISSIVITY/#endif. Unless ocean_emissivity=1.
590       this factor is absolutely required, because the lw exitance (= out-going
591       long wave radiation) is emissivity*stefanBoltzmann*T^4 + rho*lwdown,
592       where the reflectivity rho = 1-emissivity for conservation reasons. Once
593       this is established, we can remove the CPP-Flag (if we want to).
594    o pkg/seaice:
595      - qualify a stop statement in S/R seaice_check: EXF_READ_EVAP and
596        ALLOW_BULKFORMULAE are only required if SEAICE_EXTERNAL_FLUXES is defined
597      - sort out emissivity and long wave radiation, step 1: make SEAICE_emissivity
598        what the name implies (and not emissivity*BoltzmannConstant), this means
599        the old default value of 5.5e-8 now means
600        5.5e-8/5.670e-8 = 0.97001763668430343479 as ocean_emissivity in
601        S/R exf_readparms
602      - FV-discretization of the B-grid LSOR solver, turn on with
603        SEAICE_LSRBNEW. This new solver also involves a slight re-organization
604        of the calling routine dynsolver, so that B and C-grid code look a
605        little more alike.
606      - fix index bugs in ostres.F (B-grid code)
607    o pkg/seaice/seaice_ocean_budget.F: change (unused) code to make it look better
608    o pkg/seaice/seaice_readparms.F: make ocean_emissivity*stefanBoltzmann the
609      default for SEAICE_emissivity, if useEXF; requires setting a wrong
610      parameter value in global_ocean.cs32x15/input.seaice/data.seaice for
611      backward compatiblity
612    o model/src: use sigmaR in calc_ivdc
613    
614    checkpoint63g (2011/12/16)
615    o pkg/seaice/seaice_growth.F:
616      fix heat conservation of the coupled ocean-seaice system.
617      when SEAICE_HEAT_CONSERV_FIX is defined, the mismatch of
618      solid vs liquid water treatment is resolved via QNET.
619    o pkg/seaice/seaice_growth.F:
620      add missing term for sublimation in saltFlux, which was breaking conservation.
621    o pkg/seaice/seaice_model.F:
622      Remove this patholigical case treatment in evolution branch,
623      where it is un-necessary and breaks conservation.
624      Update global_ocean.cs32x15/results accordingly for
625      output.seaice.txt output_adm.seaice.txt and output_adm.seaice_dynmix.txt
626    o model/src:
627      useRealFreshWaterFlux: remove masking of EmPmP (using maskInC) in
628      external_forcing_surf.F and apply mask directly in S/R SOLVE_FOR_PRESSURE.
629    o pkg/obcs:
630      modify Stevens boundary conditions so that S/R obcs_calc_stevens computes
631      tendency for temperature and salinity that is then applied to update
632      theta and salt in S/R obcs_apply_ts; this requires proper masking of all
633      horizontal advection and diffusion contributions on the boundary (in
634      S/Rs gad_advection, gad_calc_rhs, gmredi_rtransport, gmredi_calc_diff), and
635      removing the mask in S/R timestep_tracer. The advantage of this approach is
636      that the updated tracer values include contributions from the surface
637      forcing and vertical diffusion.
638      This modification changes exp4.stevens because of vertical diffusion.
639    o model/src:
640      change non-curvilinear grid setting to also work with exch2 + blank tiles:
641      - move delX,delY to new header file (SET_GRID.h) and adjust length to 1rst
642        face dimensions.
643      - new S/R INI_LOCAL_GRID to define model tile-local grid (using same units
644        as delX,delY) and called from S/R INI_CARTESIAN_GRID, INI_CYLINDER_GRID
645        and INI_SPHERICAL_POLAR_GRID.
646      change test-experiment global_ocean.90x40x15:
647      - split the domain in many more tiles (9x4 tiles of 10x10 each);
648      - switch to exch2 and remove 1 blank-tile (but only for MPI test).
649      - update results of both test (std & dwnslp).
650    o pkg/diagnostics/diagstat_calc.F: fix problem with non-initialised halos in
651       tmp-fields for TARGET_NEC_SX at the cost of extra loops and less vectorisation
652    o model/src:
653      - take sigma-coords related code out of update_etah.F into new S/R UPDATE_ETAWS
654        and fix initialisation when using sigma-coords.
655    o model/src:
656     - improve Gael's changes from Jan 14, 2011 "addition of an 'update' of hfacc etc.
657       to their current value at the beginning of forward_step.F": add a new run-time
658       switch "doResetHFactors" (default=false) and use it to do (or not) the resetting.
659     - set doResetHFactors=T in the following test exp:
660        global_ocean.90x40x15/input (rStar) & input.dwnslp (linFS),
661        global_ocean.cs32x15/input.seaice (rStar), hs94.cs-32x32x5/input.impIGW (linFS)
662        and tutorial_global_oce_in_p (nonLinFS in p)
663    o pkg/ecco
664      - added IES cost term
665    o verification/advect_xz
666      - scale down the depth by 1/100 (from 200 km to just 2.km)
667      - add secondary test using divergent flow, r-star and implicit vertical advection.
668      - add note (check_conserve_TS.txt) and matlab script to check global
669        conservation of T & S with NonLin-FreeSurf and Adams-Bashforth.
670    o pkg/rbcs:
671      - add missing relaxUFile & relaxVFile in namelist (in rbcs_readparms.F).
672    o pkg/obcs (Stevens BCs):
673      - fix various problems in the phase speed computations of the Stevens
674        boundary conditions:
675        - sign error for western and southern boundaries,
676        - time tendencies were underestimated by factor of dTracerLev and some just
677          zero (for multidim advection schemes) -> now estimate time tendencies
678          from difference between previous (n) time level and the one before (n-1);
679          this requires storing a field per tracer per boundary, also in the pickup
680          files.
681        - replace deltaTmom in cflMer/Zon computation with dTracerLev
682        - set default phase velocity to cflMer/Zon
683      - update verification experiment exp4.stevens
684    o pkg/generic_advdiff (implicit_r):
685      - fix implicit vertical advection conservation with AB and/or NonLin-FreeSurf
686        (remove Tr*d/dz(w) in gad_implicit_r.F and add it in gad_calc_rhs.F);
687      - fix implicit vertical diffusion or advection with NonLin FreeSurf
688        (was using current recip_hFacC instead of future recip_hFacC): set future
689        recip_hFac in thermodynamics.F and pass & use it in all vertical implicit
690        solver S/R ;
691      - fill diagnostics of vertical advective fluxes (computed from tendency)
692        when using implicit vert. advection;
693      - update output of exp that uses NonLin-FreeSurf & implicit vertical diffusion:
694         global_ocean.90x40x15 (fwd+AD), global_ocean.cs32x15 (4 fwd +4 AD),
695         tutorial_global_oce_in_p (fwd), tutorial_tracer_adjsens (AD)
696         and cpl_aim+ocn (used in ocean); to be fixed: bottom_ctrl_5x5.
697    o pkg/diagnostics:
698      - add diags for T & S tendency which goes through Adams-Bashforth.
699    
700    checkpoint63f (2011/11/30)
701    o pkg/obcs/obcs_calc_stevens.F:
702      - join some loops to reduce number of if-statements
703      - fix a bug in code for northern and southern boundaries.
704    o pkg/seaice/seaice_init_varia.F
705      - undo resetting UVM=0 that has slipped in unnoticed in r1.49 and
706        caused zero ice-velocities for the B-grid code
707    o pkg/seaice/seaice_init_fixed.F
708      - fix a bug in the initialisation of the second metric terms
709        k2AtC and k2AtZ: k2AtC was set to the value of k2AtZ and k2AtZ was 0.
710      - this affects all seaice configurations with useCurviLinearGrid = .true.
711        and SEAICEuseDynamics = .true. (default) and SEAICEuseMetricTerms
712        = .true. (default)
713      - the only verification experiment affected is global_ocean.cs32x15:
714        icedyn, seaice, and seaice_dynmix (AD)
715    o pkg/thsice/thsice_diagnostics_state.F
716      - only for TARGET_NEC_SX: initialise all of tmpFld, so that overlap does
717        not contain garbage that can lead to surprises in diagstats_calc.F
718    o model/src:
719      - move bi,bj loops inside INTEGR_CONTINUITY ;
720      - call INTEGR_CONTINUITY directly from forward_step.F
721        (previously called from momentum_correction_step.F)
722      - call UPDATE_ETAH from integr_continuity.F and update initialise_varia.F,
723        forward_step.F and pkg/ecco/the_main_loop.F
724    o model/src/do_oceanic_phys.F:
725      - reset addMass to zero only if useICEFRONT ;
726      - separated k-loop for rhoInSitu calculation ;
727      - add 2 diagnostics for wVel*delta^k(Rho) at constant pressure (= WdRHO_P)
728        and at constant T,S (= WdRHOdP);
729      NOTE: change diagnostics WRHOMASS : this is now simply the Vertical transport
730        of In-Situ Density (Anomaly) (=wVel*rho^bar-k) (previously was Vertical
731        transport of locally-referenced potential density);
732        to recover old diag: (WRHOMASS)_old = (WRHOMASS)_new -1/2 * (WdRHOdP)
733    o gluemnc:
734      - replace ncrcat with ncks when adding variables to *.glob.nc
735      - change the way variables without record dimensions are handled so that
736        files that have variables with and without record variables can be glued:
737        add a record dimension with a new unique name to be able to differentiate
738        between variable with and without a-prior record dimensions. Remove
739        this record dimension before adding the variable to the *.glob.nc file.
740        This procedure automatically works also for grid.*.nc files that do not
741        have any record dimension.
742    o verification/cpl_aim+ocn:
743      - generate new reference output on baudelaire (gfortran, mpich2) (previously
744        from old aces-grid cluster, ao + ifort) and update 'run_cpl_test' script.
745    o pkg/obcs/obcs_calc_stevens.F:
746      - add code for northern and southern boundaries.
747      - reorder some loops to save some operations and so that drFBar can be scalar
748    o model/src:
749      - re-arrange extrapolation calculation in Adams-Bashforth S/R (affects machine
750        truncation) and add diagnostics for Adams-Bashforth tendency increment.
751      - update test-exp. AD output:
752        1D_ocean_ice_column, bottom_ctrl_5x5, lab_sea.noseaicedyn, obcs_ctrl;
753      and FWD output: exp4 (x3), fizhi-cs-32x32x40, fizhi-cs-aqualev20,
754        front_relax (x3), global_ocean.90x40x15 (x2), global_ocean.cs32x15 (x5),
755        global_ocean_ebm, ideal_2D_oce, internal_wave, isomip (x3), lab_sea (x4),
756        matrix_example, MLAdjust (x5), natl_box (x2), tutorial_advection_in_gyre,
757        tutorial_global_oce_in_p, tutorial_global_oce_latlon and
758        tutorial_plume_on_slope.
759    o pkg/diagnostics/diagstats_calc.F: add special code for TARGET_NEC_SX
760      that vectorises. This code uses 3 extra 2D fields, F90 array assignments
761      and F90 intrinsic routines SUM, MINVAL, MAXVAL, but since TARGET_NEC_SX
762      does not even come with an F77 compiler anymore, this should not be
763      a limitation
764    
765    checkpoint63e (2011/11/06)
766    o pkg/seaice adjoint of LSR:
767      - substantially rework STORE dirs.
768      - add new flag SEAICE_LSR_ADJOINT_ITER and parameter SOLV_MAX_FIXED
769        this flag will do SOLV_MAX_ITERS but only store SOLV_MAX_FIXED fields
770        and only perform SOLV_MAX_FIXED adjoint iters.
771        If flag SEAICE_LSR_ADJOINT_ITER is undef-ined, the store in the iteration
772        always goes to same record, meaning that the last forward field will be
773        the one used in the adjoint - an approximation.
774      - now produces non-zero LSR-related gradients, and acceptable gradients for
775        An's zonal (x-z) test case (to be checked in)
776      - lab_sea: produces acceptable gradients for lab_sea with forward/backward LSR
777        (but these are screwed up by the thermodynamics in the first place);
778        reduce from 4 to 3 timesteps to avoid t.d. issue as temporary solution;
779        output_adm.txt also reflects changes to seaice_lsr
780      - global_ocean.cs32x15:
781        * the "default" input_ad.seaice has been re-defined to always exclude dynamics
782          (output_adm.seaice.txt was updated)
783        * new input_ad.seaice_dynmix tests a forward LSR / backward free-drift
784          (output_adm.seaice_dynmix.txt)
785    o test-exp. exp4+stevens:
786      - switch off pTracers and nonHydrostatic (restart problems with NH); update output
787    o pkg/seaice (lsr solver):
788      - put coriolis term into FORCEX,Y (as in seaice_evp.F; previously in rhsU,V only);
789        update output (change truncation) of FWD test exp lab_sea & global_ocean.cs32x15
790      - fix SEAICEuseFREEDRIFT for new OBCS version (ndef OBCS_UVICE_OLD)
791      - new parameter "LSR_mixIniGuess" allows (if=2,4) to mix free-drift solution
792        into initial guess for linearised solver; use weight ~ (1/err)^2,4.
793      - compute (with new S/R) and print initial (+ free-driff sol. if available)
794        and final residual of linearised system.
795    o pkg/pp81: add diagnostics for vertical eddy viscosity and diffusivity
796      (requires new subroutines pp81_init_fixed.F/pp81_diagnostics_init.F)
797    o pkg/obcs: Stevens BCs (still only for east and west)
798      - fix Stevens BCs by using intermediate velocities of previous
799        time step as "baroclinic" contribution rather velocity of one grid cell
800        inside the boundaries; more consistent but makes the entire treatment
801        more complicated, requires new pickup files and two new S/Rs:
802        obcs_copy_uv_n and obcs_save_uv_n
803        keep old version with flag OBCS_STEVENS_USE_INTERIOR_VELOCITY
804        (undefined by default)
805      - silently move computation of some grid factors into separate loops to
806        save some recomputations
807      - add a hack for non-linear free surface
808      - add a verification experiment to exp4 that tests this code
809    o make gluemnc/xplodemnc work with (moron) non-GNU shell tools
810    
811    checkpoint63d (2011/10/25)
812    o pkg/obcs + seaice-dynamics:
813      - new implementation calls OBCS_APPLY_UVICE (in seaice_dynsolver.F) before
814        solving for uIce,vIce and prevent SEAICE_LSR or SEAICE_EVP to modify OB
815        values (consistent with an implicit method).
816      - add option OBCS_UVICE_OLD (in OBCS_OPTIONS.h, defined by default) to
817        return to older implementation (same results as before); note that none of
818        the "experimental" OBCS_SEAICE options are implemented in the new version.
819      - switch test exp. seaice_obcs to use new version (update output).
820    o pkg/seaice:
821      - add few stop (B-grid & CS-exch, B-grid & obcs, AUTODIFF & SEAICE_maskRHS)
822      - add parenthesis in Water-Ice drag calculations (evp & lsr);
823      - in seaice_lsr.F, simplify and fix AA3 setting in case sNx or sNy=1;
824        and fix case SEAICE_waterDrag=0 (but unstable if no or little seaice)
825      - update output of test exp lab_sea that uses evp or lsr (fwd+ad)
826        and global_ocean.cs32x15 (icedyn & seaice fwd+ad).
827    o pkg/layers:
828      - Include potential density as new coordinate (Thanks to David Munday)
829    o pkg/dic:
830      - Remove subroutine CALC_PCO2_APPROX_CO3 from carbon_chem.F and add
831        carbonate computation/output to CALC_PCO2_APPROX
832    o pkg/generic_advdiff
833      - make TAF generate code that vectorizes:
834        gad_dst3fl_adv_*.F, gad_u3c4_impl_r.F
835    o model/src:
836      - improve vectorization also for adjoint code of
837        solve_tridiagonal and solve_pentadiagonal. As this requires up to
838        5 new 3D-fields, this code is only turned on for the combination of
839        ALLOW_AUTODIFF_TAMC and TARGET_NEC_SX. Also remove error message
840        for singular matrix check (only for TARGET_NEC_SX).
841      - remove hard-wiring of CPP-flag ALLOW_SOLVERS_KLOOPINSIDE to
842        ALLOW_AUTODIFF. This flag now needs to be set outside of
843        solve_tri/pentadiagonal.F
844    o pkg/exf:
845      - fix previous modif in exf_readparms.F (revision 1.66: treatment of
846        optional namelist EXF_NML_OBCS).
847      - add many debug-print (to trace down where pkg/cal error msg comes from)
848    o pkg/mom_vecinv/mom_vi_hdissip.F
849      - rearrange loops so that vectorization is improved and in particular
850        the adjoint routine vectorizes. The code is a little longer now, but I
851        think easier to read.
852        Note: CPP-flag MOM_VI_ORIGINAL_VISCA4 is not tested.
853    o pkg/seaice:
854      - allow to specify initial seaice velocity from files (uIceFile,vIceFile)
855    o pkg/exch2:
856      - alternative code (without tile x tile matrix) for cumulated (global) sum;
857        used as default; keep using matrix version in adjustment.cs-32x32x1.
858    o tools/build_options:
859      - after merging some MPI and/or multi-threads specific optfiles so that
860        the modified default optfile support both built (using genmake2 -mpi
861        for the MPI built, using genmake2 -omp for OpenMP built),
862        move now obsolete optfiles to tools/build_options/unsupported/
863       (add copy of email sent to support list in doc/optfiles_changes.txt)
864    
865    checkpoint63c (2011/09/28)
866    o pkg/ebm:
867      - fix ebm_zonalmean.F for several procs in Ydir (nPy > 1); update output of
868        test exp. global_ocean_ebm (affects machine truncation, 12 digits for cg2d)
869    o pkg/seaice (SItracer pickup)
870    * Simple code for pickup of SItracer fields (#define ALLOW_SITRACER)
871      To be done:
872      - thorough testing of missing fields in S/R seaice_read_pickup
873      - thorough matching between generic tracers and specific fields used
874        (e.g. volume-weighted age, area-weighted age, salinity, ...)
875    o pkg/grdchk:
876      - all procs calculate and print finite-difference gradient (for testreport)
877      - change description output used by testreport;
878      - AD testing: also compare and report Finite-difference gradient;
879        => update all output_adm*.txt
880    o test exp. global_ocean_ebm:
881      - switch back useRealFreshWaterFlux (no problem anymore with run-off);
882        and turn on exactConserve; update (fwd) output.
883    o pkg/seaice (LSR):
884      - print to STDOUT number of solver iterations at SEAICE_monFreq interval.
885      - modify solver to deal cleanly with u/v switch at face edges (CS-grid):
886        * identical results with non-CS topology (but save up to half of EXCH calls)
887        * no much changes in cs-32 verification tests since no ice at face edges
888         (differences due to convergence criteria, since nb of iterations changed)
889        * expect some differences on lat-lon-cap grid.
890        update FWD results of global_ocean.cs32x15 test exp. (icedyn & seaice)
891    o pkg/exch2:
892      - add new CPP option to disable Cumul-Sum matrix (to save storage when using
893        many tiles); until alternative coding is added, just add a stop.
894    o pkg/kpp:
895      - move ptracer/salt correction to KPP diffusivity from calc_3d_diffusivity.F
896        to S/R KPP_CALC_DIFF_PTR (+ add tracer-index to argument list).
897    o optfiles:
898      - merged few MPI specific (*+mpi*) and multi-threads specific (*+mth) optfiles
899        into corresponding standard one, which now support different build:
900        (when using "genmake2 -mpi" for MPI built, "genmake2 -omp" for OpenMP built)
901      - add "darwin_amd64_gfortran" optfile (initially from Constantinos, tested by Gael)
902    o pkg/obcs (seaice):
903      - add missing EXCH for uIce,vIce after applying OBCS;
904      - remove S/R EXF_SWAPFFIELDS_X/Y , disable S/R EXF_SET_OBCS_X/Y by adding
905        argument = number of levels to S/R EXF_SWAPFFIELDS_XZ/YZ and S/R
906        EXF_SET_OBCS_XZ/YZ ; update obcs_exf_load.F;
907      - fix EXF_SET_OBCS_XZ/YZ for multi-threaded (assuming loaded arrays are shared)
908      - verification exp. seaice_obcs: split domain in 2 tiles ; add SIZE.h_mpi
909        and eedata.mth for MPI and mutlti-threaded testing.
910    o pkg/flt:
911      - make FLT EXCH working with multi-threads (and MPI + multi-threads);
912      - use buffer for floats IO (trajectories & profiles); size set in FLT_SIZE.h;
913      - fix pickup and trajectories + profiles output with multi-threads;
914      - add parameter to select group of fields to write along trajectory and
915        profile (default unchanged);
916      - only call PORT_RAND* function when flt_noise <> 0;
917      - add multi-threaded test for verification exp. flt_example.
918    o eesupp/src:
919      - fix S/R ALL_PROC_DIE for MPI+multi-threads.
920      - USE_OMP_THREADING: check that number of threads (from eedata) matches
921        actual number (from env.var. setting).
922    o pkg/ebm:
923      - fix multi-threading in ebm_area_t.F ; clean-up EBM.h header file.
924      - add multi-threaded test for verification exp. global_ocean_ebm
925    
926    checkpoint63b (2011/08/29)
927    o pkg/ebm:
928      - fix sign of runoff;
929      - update directly forcing fields (Qnet,EmPmR) to use standard
930        external_forcing_surf.F (remove ebm_forcing_surf.F);
931      - avoid loading forcing fields a 2nd time (1rst time from ini_forcing.F);
932      - set either tauThetaClimRelax (in data) or tauThetaZonRelax (in data.ebm)
933        and apply relaxation towards corresponding SST field (2-D map or ZonAver).
934      - update global_ocean_ebm parameters file data and update output (fwd+ad).
935    o verification/matrix_example:
936      - split domain in 8 tiles (2x4); add SIZE.h_mpi and eedata.mth for
937        MPI and mutlti-threaded testing.
938    o pkg/matrix:
939      - change name of S/R MATRIX_INIT to S/R MATRIX_INIT_VARIA ;
940      - fix for multi-tiles (add bi,bj indices to exp/impMatrixCounter);
941      - fix for multi-threaded (remove DATA statement);
942      - use standard DIFFERENT_MULTIPLE function;
943      - add MATRIX_OPTIONS.h
944    o verification/matrix_example:
945       To allow to split the domain in several tiles, change the domain size
946        from 31x31 to 32x32 by adding 1 row (on Southern side) + 1 column (on
947        Western side) of land points.
948    o (*_)write_pickup:
949      - fix few bugs in mypackage_read/write_pickup.F
950      - in MDS_WR_METAFILES calls, replace "myTime" by a local copy into
951        array of length 1 (was caught by compiler syntax-check).
952    o pkg/diagnostics (velocity potential solver):
953      - fix initialisation of main diagonal matrix (for overlap values)
954    o tools/build_options:
955      - towards single optfile for MPI and non-MPI built: merge few +mpi optfile
956        into previously non MPI one (linux_am64 pgf77,open64,pathf90,ifort11)
957      - linux_amd64_gfortran: merge +mpi_generic version into standard optfile:
958        * move IEEE flags to DEVEL section; take IEEE flags from +mpi_generic ;
959        * FAST case: for now, keep -O3 with ini_masks_etc.F in NOOPTFILES list;
960        and use "-devel" testreport option for standard testing on baudelaire.
961    o pkg/grdchk:
962      - Assume that all gradient-check position are within the same tile
963        corresponding to global indices (iGloTile,jGloTile) and that
964        positions (i,j indices or nbeg) are local to this tile;
965      - set tile local-indices and proc. number according to tile global-indices;
966      - remove grdchkwhichproc from namelist (retired param);
967      - send adjoint gradient to all procs so that all procs print it to STDOUT;
968      - switch on MPI test for global_ocean.90x40x15 AD test experiment.
969    o adding package bbl (Bottom Boundary Layer)
970      description in MITgcm/pkg/bbl/bbl_description.tex
971      example/test experiment in MITgcm_contrib/bbl
972    o adjoint verifications
973      - changed 5 experiments to multi-tiles
974        * global_ocean.90x40x15
975        * obcs_ctrl
976        * offline_exf_seaice
977        * tutorial_dic_adjoffline
978        * tutorial_tracer_adjsens
979        changed reference output for those that crossed tile boundaries
980        (changed choices of gradient check positions)
981      - with same tiling, switch on MPI test for the last 4 (add SIZE.h_mpi)
982      - temporary bug fix in grdchk_loc.F for obcs
983    o genmake2 & testreport
984      - add target "obj" (just for OBJFILES files) to Makefile;
985      - add option to specify FEXTRAFLAGS on command line.
986    o pkg/mypackage:
987      - remove bi,bj arguments from argument list of S/R MYPACKAGE_CALC_RHS
988    
989    checkpoint63a (2011/08/02)
990    o pkg/diagnostics (velocity potential):
991      - fix velocity-potential calculation when using OBCS: balance net inflow
992        at each level (new S/R OBCS_DIAG_BALANCE).
993      - fix some of the problems with OBCS in stream-function calculation.
994    o pkg/exf/exf_readparms.F
995      - make treatment of optional namelists (EXF_NML_04, EXF_NML_SGRUNOFF,
996        EXF_NML_OBCS) more consistent, so that you need not have these lists
997        in data.exf when they are not used.
998    o optim/optim_readdata.F:
999      - add some output about obcs variables that might help debugging
1000      - add a check about nvarlength
1001    o pkg/ctrl: once again, fix computation of endrec in s/r ctrl_init_rec
1002    o pkg/diagnostics (velocity potential):
1003      - fix mask for OBCS (still problems in stream-function with OBCS);
1004      - add specific parameter (default = main code CG2D params) for solver;
1005      - in case of poor convergence, use solution corresponding to lowest residual.
1006    o pkg/seaice/seaice_growth.F: small changes that permit vectorizable
1007      adjoint code. In general statements like tmpscal=fld(i,j) are problematic
1008      and should be avoided where possible.
1009    o model/src (rStar):
1010      - include r* effect on reference-state (PhiRef) in totPhiHyd
1011        (so that it's really the potential anomaly at the cell center);
1012        affect solution only if z* with full pressure in EOS.
1013      - test-exp global_ocean.90x40x15: reduce viscA4 (was not stable) and
1014        update output (because of z* in totPhiHyd and viscA4 changes);
1015      - keep the previous diagnostics as "PHIHYDcR" (closer to potential anomaly
1016        @ constant r) until interpolation at constant r is implemented.
1017    o pkg/diagnostics
1018      - fix RCENTER diagnostics in case cell center is not at interface middle
1019    o add code for TEOS-10 (www.teos-10.org, McDougall et al. 2011). Use
1020      this eos with eosType = 'TEOS10', in data (PARM01). This eos implies
1021      that THETA and SALT are "conservative temperature" and "absolute
1022      salinity"
1023    o pkg/ctrl
1024      - fix computation of endrec in s/r ctrl_init_rec
1025      - ctrl_pack/unpack_*: remove unused variables and some obsolete code
1026    o pkg/seaice/seaice_growth.F
1027      - fix recomputation with FENTY_AREA_EXPANSION_CONTRACTION code,
1028        remove then obsolete STORE directives
1029      - fix STORE directives for tice and tices, so that only the
1030        appropriate part of the fields are stored (and not the entire
1031        field); update global_ocean.cs32x15.seaice AD output.
1032      - cosmetic changes: adjust CPP flags and indentation for better
1033        legibilty
1034    o pkg/autodiff: add mnc-output of adBottomDragFld (code contributed by
1035      Chris Wilson)
1036    o pkg/gmredi:
1037       Add Sub-Meso Eddies parameterisation from Baylor (for now, disabled with TAF),
1038       and test it in verification exp. "front_relax.bvp" (update output.bvp.txt)
1039    
1040    checkpoint63  (2011/07/11)
1041    o pkg/exch2:
1042     - rename+move: nTiles in W2_EXCH2_PARAMS.h --> exch2_nTiles in W2_EXCH2_TOPOLOGY.h
1043     - exch2 version of Cumul-Sum routine: S/R W2_SET_MAP_CUMSUM set up the
1044       (2*nTiles)x(nTiles) Cumul-Sum matrix and Master Proc collects all tiles X,Y
1045       increments, calculates Cumul-Sum @ tile origin and sends results to each tile.
1046    o pkg/diagnostics:
1047     - deal with pairs of post-processed diags which are computed together; in
1048       particular, re-order list of diags within 1 file to save 2nd computation.
1049     - add S/R to compute velocity stream-function (called after velocity-potential
1050       calculation) from divergence free transport -> new diagnostics "PsiVEL".
1051     - add parameter to select grid-point location where PsiVEL == 0.
1052    o eesupp/src:
1053       new S/R to calculate cumulated sum on tiled array, corner grid-cell location
1054       (specific S/R needed with exch2 topology - for now, just print an error msg)
1055    o pkg/shelfice
1056     - Implement friction velocity-dependent transfer coefficients following
1057       Holland and Jenkins, JPO, 1999
1058       Original code by M. Losch with small modifs.
1059       Enable with CPP option SHI_ALLOW_GAMMAFRICT
1060       and runtime flag SHELFICEuseGammaFrict
1061    o verification lab_sea & global_ocean.cs32x15:
1062     - use tools/xmakedepend (instead of cyrus_makedepend, in genmake_local):
1063       does not miss some dependencies (but is slower) and also works with many files
1064       (default makedepend limitation for AD built).
1065     - use cyrus_makedepend in adjustment.128x64x1 (so that it still tested).
1066    o pkg/diagnostics:
1067     - add run-time parameter "useMissingValue" (def=False) to fill land-point
1068        (i.e., where mask=0) with MissingValue ; used only in MNC output file.
1069       This replaces CPP-option DIAGNOSTICS_MISSING_VALUE.
1070     - Extend the use of "missing_value" setting from data.diagnostics for the case
1071       of counter-diagnostics (where fraction-weight is zero). This applies both to
1072       MNC and MDS output files.
1073    o pkg/seaice/seaice_growth.F:
1074      - add 'a priori' cap of latent heat flux based on actual mass considerations
1075        when SEAICE_ADD_SUBLIMATION_TO_FWBUDGET is used in conjunction with the
1076        non-legacy seaice_solve4temp.
1077      - add diagnostic of the residual sublimation freshwater flux (the freshwater
1078        flux taken from the ocean if the total actual latent heat fluxes exceed
1079        the maximum)
1080      - remove the CPP switch around the *_FWbySublim unit change and move diagnostic
1081       fill for SIatmQnt, SIfwSubl, SIatmFW to the end of seaice_growth.F.
1082      - add diagnostic of the actual sublimation freshwater flux (that is 0. ifndef
1083       SEAICE_ADD_SUBLIMATION_TO_FWBUDGET) and of the latent heat flux (evap+sublim).
1084      - bug fix : frWtrAtm needs a_FWbySublim ifdef SEAICE_ADD_SUBLIMATION_TO_FWBUDGET.
1085      - bug fix : missing part to Martin's r_FWbySublim pathological case fix.
1086    o verification 1D_ocean_ice_column:
1087       made model domain truly 1x1x23 instead of 5x5x23 with only center cell (3,3,:) wet
1088       update results
1089    o pkg/diagnostics:
1090     - Implement setting of "Post-Processed" diagnostics (corresponding to gdiag(5)='P')
1091       which are not filled-up but computed from other diags ; In this case, the mate
1092       diag points to the primary (filled-up) diag to used for post processing.
1093     - Update Velocity-potential computation using post-processed diag framework.
1094     ==> Change the ordering of fields and time-periods in MDS output file
1095       when using periodic averaging: now writes one time record with the full set
1096       of fields for this time period, then the next time reccord (it used to be
1097       one field with the full set of time records then the next field).
1098         Note: this is now similar to NetCDF (MNC) output file. <==
1099    
1100    checkpoint62z (2011/06/21)
1101    o adjoint monitor:
1102     - Add adjoint monitor output for packages exf, seaice
1103       and update relevant testreport output
1104    o pkg/seaice:
1105     - re-order diags inits so that they appear in order in available_diagnostics.log
1106     - added diags: hsnow thermo. rates of change, area preceeding ridiging process,
1107       area/heff/hsnow preceeding thermodynamic growth/melt.
1108     - modified diag: SIdA; output actual effect, as the description states.
1109     - modified description: SIqneti, SIqneto, SIuheff, SIvheff, SIdAb*, HSNOW.
1110     - retired redundant diags: SIyneg, SIfice, SIsnwice, SIthdgrh.
1111       (SIyneg->SIdHbOCN; SIfice->SIdHbATC; SIsnwice->SIdHbFLO;
1112        and SIthdgrh->SIdHbOCN+SIdHbATC+SIdHbATO)
1113     - modified diags (2) : switch all SIdA*, SIdH*, SIdS* from delta to rates.
1114     - added diagnostics for seaice generic tracers (SItr*).
1115     - added SItrUnit and SItrNameLong run time param (for SItr* diags).
1116     - in diag names, replaced 'PrTh' abbrev. of 'preceeding thermo' with 'PT'.
1117     I. Fenty: 18-Jun-2011:
1118     Minor changes to seaice package:
1119     1) Retired old variables (A22, SEAICE_lhsublim, areaMax, areaMin, hiceMin) and
1120        added some new ones (SEAICE_area_reg, SEAICE_hice_reg, SEAICE_area_floor)
1121       - Differentiated "regularization variables" from "floor variables"
1122        * areaMin became SEAICE_area_reg (old A22) and SEAICE_area_floor
1123        * hiceMin became SEAICE_hice_reg (old hiceMin)
1124          (with _reg meaning regularization variable)
1125       - SEAICE_lhSublim becomes lhSublim, the sum of SEAICE_lhEvap and SEAICE_lhFusion
1126        so as to ensure energy conservation when going between phases
1127      - A22 was not used anywhere
1128     2) Changed regularization procedure for heffActual and hsnowActual to ensure
1129        well-boundedness and smooth adjoint in seaice_growth.F
1130     3) Fixed a bug where seaice_solve4temp would not recognize ice-free grid cells
1131        because the old regularization always set heffActual >= 0.05 cm
1132     4) Changed the model so that the default behavior is to put a small (10^-5) "floor"
1133        on AREA when HEFF > 0.
1134      - went from requiring ALLOW_PRECLUDE_INFINITESIMAL_AREA to be defined to
1135        requiring that DISABLE_AREA_FLOOR *not* be defined
1136     Affected verifications:
1137      - 1D_ocean_ice_column (output.txt output_adm.txt)
1138      - global_ocean.cs32x15 (output.seaice.txt output_adm.seaice.txt)
1139    o pkg/diagnostics:
1140      - move MNC code from diagnostics_out.F into new diagnostics_mnc_out.F (2 S/R).
1141      - rename S/R GETDIAG to DIAGNOSTICS_GET_DIAG and change type of 1rst argument
1142        (was _RL, now integer) with option = 0 to retrieve all levels.
1143      - add pieces of code to compute velocity potential at each level (new diagnostics
1144        PhiVEL, works only when UVELMASS & VVELMASS are also turned on);
1145        for now, using same params as CG2D (target-resisual, max Nb of iter ...).
1146      - fix few issues with counter diagnostics in diagnostics_setdiag.F &
1147        diagstats_setdiag.F (if diagnostic counter is itself a counter diag)
1148        and in diagnostics_fract_fill.F (do not need a valid pointer for the
1149        diagnostics counter-mate); check that definition of counter-diagnostic
1150        includes a valid counter-mate (in diagnostics_set_levels.F).
1151    o model/src (rStar):
1152      - add rStar scaling factor in diags_phi_hyd.F (similar to calc_grad_phi_hyd.F);
1153        affect solution only if z* with full pressure in EOS;
1154        update output of test-exp global_ocean.90x40x15.
1155    o pkg/seaice:
1156      - introduce siEps=1e-5 parameter
1157      - use areaMax in AREA update (part 4), consistent with ridging step (part 2.5).
1158      - re-organize SEAICE_ADD_SUBLIMATION_TO_FWBUDGET code.
1159      - introduce ALLOW_SITRACER and seaice_tracer_phys.F to handle generic seaice tracer.
1160        For now it covers, and was tested for, ice salinity and age (attached to HEFF),
1161        as well as ice cover age and ridging index (attached to AREA).
1162        For now the run time parameters (in data.seaice/SEAICE_PARM03) are
1163        SItrName (e.g. 'age') and SItrMate ('HEFF', which is the default, or 'AREA').
1164        Up to SItrMaxNum=3 tracers can be used simultaneously.
1165    o pkg/salt_plume:
1166      -introduce SPsalFRAC run time parameter that sets the fraction of the
1167       salt by-product of ice growth (SPsalFRAC*(1-SIsalFRAC)*salt typically)
1168       that gets vertically redistributed (fluxed down) by pkg/salt_plume.
1169    o model debug options:
1170      - Switch reading of debugMode from S/R INI_PARMS (parameter file "data", stored
1171        in PARAMS.h) to S/R EESET_PARMS (parameter file "eedata", stored in EEPARAMS.h).
1172      - Refine debug-msg printing selection (3 new levels):
1173        debugMode  : controls printing of debug messages (sequence of S/R calls).
1174        debugLevel : controls printing of algorithm-relevant auxiliary/debug messages
1175         debLevZero =  0 ; /* level of disabled aux. msg printing */
1176         debLevA =  1 ; /* level of minimum  aux. msg printing */
1177         debLevB =  2 ; /* level of low aux. print (report read-file opening)*/
1178         debLevC =  3 ; /* level of moderate debug prt (most pkgs debug msg) */
1179         debLevD =  4 ; /* level of enhanced debug prt (add DEBUG_STATS prt) */
1180         debLevE =  5 ; /* level of extensive debug printing */
1181        New debugLevel default: with default debugMode value (=F),
1182          = 2 (debLevB) or = 1 (debLevA) in case ALLOW_AUTODIFF is defined.;
1183          and if debugMode=T, default debugLevel = 4 (debLevD).
1184        Relation with previous settings:
1185         debLevB (=2) corresponds to former debLevA (=1)
1186         debLevD (=4) corresponds to former debLevB (=2)
1187        Note:
1188         a) if debugLevel=0, skip WRITE_GRID call when nIter0 > 0 (same as before);
1189         b) default debugLevel=1 is convenient in AD runs (avoid many file opening msgs);
1190            to recover previous default, set debugLevel=2 (e.g. AD-test hs94.1x64x5)
1191      - Add new parameter (printResidualFreq, read from PARM02 namelist) to print
1192        detailed CG solvers convergence; off (=0) by default, except if debugLevel=5.
1193    o pkg/obcs:
1194      - change OBCSfixTopo default from True to False (should not change the results);
1195        keep OBCSfixTopo=T in verification-exp. seaice_obcs.
1196    o pkg/thsice:
1197      - fix bug in thsice_calc_thickn.F (was introduced in version 1.18) in
1198        2nd layer seaice sublimation (unlikely to happen)
1199      - use Interior mask for OBCS in thsice_advection.F (similar to what is
1200        done in gad_advection & seaice_advection).
1201    o adjoint:
1202      bug fix spotted by Gael Forget:
1203      seaice_advection and thsice_advection still had
1204      legacy CPP options to avoid CS corner updates for adjoint
1205    o pkg/seaice:
1206      => Change some of the defaults (2011/05/29):
1207         - change SEAICEuseFluxForm default (from False to True)
1208         - change DIFF1 default (from 0.004 m/s to 0. m/s)
1209         And print warnings if DIFF1 is not set in data.seaice and centered
1210          avection scheme is used without any diffusion.
1211      also:
1212      - fix seaice_diffusion calls in default AdvScheme part of seaice_advdiff.F;
1213      - set SEAICEdiffKh[] default in the same way as SEAICEadvSch[]
1214      - stop if DIFF1<>0 with SEAICEadvScheme <> 2, if DIFF1<>0 with any
1215        other non-zero SEAICEdiffKh[] diffusivity, if SEAICEadvSalt=T with
1216        #undef SEAICE_VARIABLE_SALINITY, if SEAICEadvAge=T with #undef SEAICE_AGE.
1217      update results of test exp.:
1218         lab_sea: output.fd (switch to AdvScheme=33 with diffKh=20)
1219             output.hb87, output_adm.evp (SEAICEuseFluxForm=T and diffKh=200)
1220             output_adm.noseaicedyn (SEAICEuseFluxForm=T)
1221         offline_exf_seaice: output.seaicetd, output_adm (SEAICEuseFluxForm=T)
1222         seaice_obcs: output (SEAICEuseFluxForm=T)
1223      and prescribe old default for SEAICEuseFluxForm (=F) and DIFF1 (=0.004)
1224          for standard fwd & AD lab_sea tests (to keep the same output).
1225    o pkg/seaice/seaice_growth.F:
1226      - use Ian Fenty's capping formulas for actual ice
1227      thickness thoughout EVOLUTION branch.
1228      - put treatment pathological case #2) in CPP brackets
1229      (ALLOW_AVOID_INFINITESIMAL_AREA, undef by default).
1230      - update global_ocean.cs32x15 and 1D_ocean_ice_colum results accordingly.
1231    o pkg/seaice:
1232      - seaice_diffusion.F : remove the min(DX,DY) factor permanently;
1233      pass the Laplacian diffusivity (in m^2/s) diffKh as a parameter;
1234      also pass fac as a param, which can be 1. (to update the tendency
1235      field) or the time step (to update the field itself).
1236      - seaice_advdiff.F: for multidim, call seaice_diffusion with
1237      e.g. SEAICEdiffKhHeff and with fac=1; for single-dim, call
1238      seaice_diffusion with e.g. SEAICEdiffKhHeff and with fac=time step.
1239      - SEAICE_PARAMS.h, seaice_readparms.F, seaice_check.F :
1240      hooks to handle SEAICEdiffKhHeff, SEAICEdiffKhArea, etc.
1241    o pkg/seaice:
1242      diffusion with centered advection scheme (diffus.F & advect.F):
1243      - simplify S/R DIFFUS (put deltaT & DIFF1 factor outside, move EXCH outside)
1244        to just compute the laplacian of input-field.
1245      - unroll k loop (harmonic,biharmonic diff) in advect.F to save 1 exch call.
1246      - fix flux-form version in diffus.F to conserve tracer.
1247      update output of lab_sea.fd & lab_sea.hb87 (1rst set of modif affects
1248       machine truncation) and lab_sea.salt_plume (conservative flux-form modif)
1249    
1250    checkpoint62y (2011/05/26)
1251    o pkg/seaice:
1252     - seaice_growth.F : in EVOLUTION branch, always include
1253       a_QSWbyATM_cover in qnet (as it should be).
1254     - verification/global_ocean.cs32x15 : update results accordingly
1255       (output.seaice.txt output_adm.seaice.txt).
1256    o pkg/seaice + obcs:
1257     - use maskInW & maskInS in multi-dim advection and biharmonic diffusion:
1258       equivalent of assuming no tracer gradient outside the OB region.
1259       update output of seaice_obcs (uses DIFF1 <>0 => biharmonic diffusion)
1260     - remove calls to OBCS_COPY_TRACER after EXCH calls (no longer needed
1261       after changes above);
1262     - obcs+seaice cleaning: apply seaice-tracer OB values to tracer field
1263       only at OB location (instead of over a band of OLx width).
1264    o pkg/seaice:
1265     - fix wrong indices in old (non Flux-Form) diffusion default S/R diffus.F
1266       (dxG(I+1, ...) changed to dxG(I, ...), no impact on Lat-Lon grid)
1267    o pkg/obcs:
1268      - split header file "OBCS.h" into 4 separated files:
1269        OBCS_PARAMS.h, OBCS_GRID.h, OBCS_FIELDS.h & OBCS_SEAICE.h
1270       Note: OBCS_PARAMS.h & OBCS_GRID.h can be included without OBCS_OPTIONS.h
1271         (contain no conditional statement which depends on OBCS options).
1272      - move "useOBCSYearlyFields" from "data.obcs" (hold in OBCS_PARAMS.h)
1273        to parameter file "data.exf", namelist EXF_NML_OBCS (in EXF_PARAM.h).
1274    o ctrl, cost, grdchk & autodiff pkgs:
1275      - make options file more standard (like other {PKG}_OPTIONS.h file but
1276        with AD_CONFIG.h); clean-up some of the included header files.
1277    o pkg/obcs:
1278      - do not mask tracer when applying OB (tracer == 0 could generate problems)
1279      - apply tracer OB values to tracer field only at OB location (instead of
1280        over a band of OLx width)
1281      - clean-up obcs_apply_w.F & obcs_apply_eta.F (since less calls to these S/R)
1282      - remove OBCS_MULTIDIM_OLD_VERSION code in gad_advection.F and remove
1283        obcs_apply_tloc.F & obcs_apply_sloc.F
1284    o obcs in model/src:
1285      - call OBCS_APPLY_W only if NonHydrostatic.
1286      - call OBCS_APPLY_ETA only if NonLinFreeSurf.
1287      - reset dEtaHdt and wVel to zero outside OB interior region ;
1288      - leave tracer unchanged outside OB interior region: This has no effect
1289        on the solution but just to prevent unrealistic tracer value outside OB.
1290      - zero out velocity outside OB interior region: This has no effect on
1291        the solution but just to prevent unrealistic velocity outside OB.
1292    o obcs and non-lin free-surf:
1293       move call to OBCS_APPLY_R_STAR from update_r_star.F to calc_r_star.F
1294       and call to OBCS_APPLY_SURF_DR from update_surf_dr.F to calc_surf_dr.F
1295       + add argument "etaFld" to OBCS_APPLY_R_STAR & OBCS_APPLY_SURF_DR:
1296       this fixes missing EXCH + get consistent eta OB value (+ fix restart).
1297       update results of test-exp. exp4(nlfs).
1298    o exp4 (nlfs) test-exp:
1299       use OBC for Eta at Western & Eastern OB (to test prescribing Eta
1300       with NonLin-FreeSurf); update output.nlfs.txt
1301    o obcs and 2d/3d solver norm:
1302       use interior masks (maskInC) to cancel out cg2d & cg3d matrix coeff at OB
1303       and outside OB interior region (will allow to place OB further inside the
1304       domain). Depending on the domain, can affects cg2d-Norm (previous
1305       cancellation outside OB was only partial), e.g. in exp4 & obcs_ctrl,
1306       and cg3d-Norm (previous Norm was computed before canceling OB terms),
1307       e.g. in tutorial_plume_on_slope.
1308      - update output of exp.: exp4 (x2), obcs_ctrl and tutorial_plume_on_slope.
1309    o pkg rbcs:
1310      - split RBCS.h into 3 files: RBCS_SIZE.h, RBCS_PARAMS.h & RBCS_FIELDS.h
1311      - add capability to apply relaxation to horizontal velocity uVel & vVel.
1312    o pkg/grdchk: add gradient check for control variable xx_shifwflx
1313    o pkg/shelfice/shelfice_init_fixed.F
1314      fix CPP-flag combinations
1315    o pkg/seaice: Merge iceage code of Pierre Rampal
1316      * update/change/correct ice age calculations
1317      * add age updates for pathological cases
1318      Probably needs more testing...
1319    
1320    checkpoint62x (2011/05/13)
1321    o pkg/mom_vecinv:
1322       high-order vorticity scheme: use interior masks (maskInW & S)
1323       to zero-out (outside OB) gradient of vorticity.
1324    o verification exp.:
1325       turn on "useEnergyConservingCoriolis" (better discretisation) in exp.
1326       hs94.128x64x5 and seaice_obcs ; update results.
1327    o pkg/obcs:
1328      fix bug in OBeta for YZ sections in obcs_exf_load.F
1329    o pkg/ctrl, pkg/shelfice, and optim:
1330      - add new control variable xx_shifwflx (fresh water flux underneath ice
1331        shelves). This is almost as tedious as obcs-ctrl, because the
1332        variables needs its own mask.
1333      - add a cost function term that penalizes the deviation of xx_shifwflx
1334        from the first guess (zero) in analogy to other control variables
1335    o pkg/shelfice:
1336      - start basic adjoint
1337    o pkg/ctrl:
1338      - remove extra 2D field "for good measure" when initializing in
1339        ctrl_set_globfld_[xy/xz/yz].F
1340      - replace hard coded precision 32 (a bug) in ctrl_map_ini_gen by ctrlprec
1341      - improve error messages in ctrl_set_unpack_*
1342    o OBC implementation in momentum:
1343       use interior masks (maskInC,W & S) in momentum S/R:
1344       - multiply divergence, tension and some del^i.u or del^j.v by maskInC
1345       - multiply del2u,del2v by maskInW/S (biharmonic viscosity)
1346       - multiply horiz. grad of vorticity by maskInW/S (in Leith scheme)
1347       - multiply gradient of wVel by maskInW/S in del2w calculation (NonHyd)
1348       Motivation: fix/clean implementation of OBC with biharmonic-viscosity
1349        (and also with Leith/Smagorinsky harmonic-viscosity).
1350       Update output of experiment dome and exp4 (+nlfs).
1351    o exp4 test-exp:
1352      - turn on: nonHydrostatic, exactConserv, viscA4 (with momDissip_In_AB=F)
1353        and prescribe time-varying OB (without pkg/exf) for zonal-velocity
1354        at Western & Eastern Boundaries (+/- 1 per-cent); Also prescribe
1355        time-varying OB at Western-side for wVel (NonHyd); update output.
1356      - add secondary set-up (.nlfs) using NonLin FreeSurf (z*) + mom_vecinv
1357        and biharmonic-viscosity ; also use prescribed time varying OB.
1358    o pkg/obcs:
1359      fix bug in OBWeta,OBWeta indices in obcs_apply_r_star.F
1360    o model/src:
1361      - fix startTime setting when baseTime<>0 & nIter0=0 are specified ;
1362      - initialise startTime & nIter0 with unlikely values: allows to set one
1363        from the other without ambiguity.
1364    o seaice_obcs test-exp.:
1365      add small diffK4T,S to test biharmonic diffusivity with OBCS ; update output.
1366    o pkg/obcs:
1367      - remove calls to OBCS_COPY_TRACER after EXCH for T,S & pTracer:
1368        no longer needed with maskInC,W,S in pkg/generic_advdiff.
1369    o pkg/seaice:
1370      - retired SEAICE_SALINITY and SEAICE_salinity in favor of
1371        SEAICE_VARIABLE_SALINITY and SIsalFRAC, respectively.
1372      - fixed bug in the initialization of sea ice salinity variable HSALT
1373        in seaice_init_varia.F  (removed dependence on ICE2WATR)
1374    o fizhi-cs test exp.:
1375       switch reference output convention for these 2 non-standard test-exp,
1376        from: pgi  6.1-5 on faulks (FC.6, -of linux_ia32_pgf77+authors_fc5)
1377          to: ifort 11.1 on baudelaire (FC.13, -of linux_amd64_ifort11)
1378       reason: faulks might get retired soon and pkg/fizhi has still Pb with gfortran
1379    o model/inc:
1380      - change type of PmEpR array (from _RS to _RL) to fix restart (with "-use_r4")
1381        of exp. global_ocean.90x40x15 (Suncronous time-stepping + Real-FW + NonLin-FS)
1382    o pkg/seaice:
1383      - fix calculation of saltFlux and saltPlumeFlux when using SEAICE_SALINITY
1384    o verification/lab_sea, 1D_ocean_ice_column, seaice_obcs, global_ocean.cs32x15
1385      - updated output*.txt files due to bug fixes in salt, saltPlumeFlux,
1386        and initial HSALT
1387    
1388    checkpoint62w (2011/04/26)
1389    o pkg/mom_fluxform:
1390      - fix calculation of del2u & del2v (no-slip BC) when using Non-Lin Free-Surf.
1391      - use parameter "sideDragFactor" in no-slip BC side-drag part.
1392      - update output of exp. global_ocean.90x40x15
1393    o pkg/mom_vecinv:
1394      mask del2u & del2v (no effect on results, but cleaner & closer to mom_fluxform)
1395    o update seaice exp.:
1396      use more consistent parameter values (remove "backward compatability only":
1397       ICE2WATR, SEAICE_lhSublim, SEAICE_cpAir, SEAICE_rhoAir + set rhoConstFresh)
1398      related to thermodynamics seaice. Update output (fwd+AD) of exp.:
1399       1D_ocean_ice_column (x2), lab_sea (x8), ioffline_exf_seaice (x2) & seaice_obcs
1400    o update test-exp global_ocean.90x40x15:
1401      o use default CD_CODE_OPTIONS file (Adams-Bashforth on CD Mom & Coriolis).
1402      o increase Overlap size from 2 to 3 (to allow to test bi-harmonic Visc.)
1403      o new pickup-files from a 100.yr run with pkg/down_slope (input.dwnslp params)
1404      o turn on zStar & viscA4 in standard set-up (dir input/)
1405        and update output files: output.txt & output.dwnslp.txt
1406    o new AD-test experiment: obcs_ctrl
1407      (From Matt MITgcm_Contrib/SOSE/BoxAdj) to test OBCS as control vector.
1408    o pkg/dic:
1409      fix two bugs in handling water vapour pressure in carbonate chemistry
1410      and air-sea fluxes. Found by Val Bennington and Galen McKinley
1411      (add DIC Option = WATERVAP_BUG to recover old results)
1412      update output of tutorial_global_oce_biogeo (fwd+AD) & tutorial_dic_adjoffline
1413    o adding allowInteriorFreezing option to check for water below freezing point
1414      at depth and bring the negative heat anomaly to the surface level
1415    o pkgs _fields_load:
1416      - extend GET_PERIODIC_INTERVAL to deal with non-periodic case (from pkg/rbcs)
1417      - use new S/R GET_PERIODIC_INTERVAL in pkgs:
1418        bulk_force, cheapaml, cfc, dic, obcs (+ ctrl/ctrl_get_gen_rec), offline and
1419        rbcs to get interpolation weights and time reccord number.
1420      - fix multi-threading in aim_fields_load.F
1421      - apply EXCH to temp arrays [0,1] after reading in dic_fields_load.F
1422    o external_fields_load:
1423      new S/R GET_PERIODIC_INTERVAL to calculate which time-record (and linear
1424       interpolation weights) to use in a periodic time-series ; do not divide by
1425       time-step to convert to integer:
1426       - this fixes case where externForcingPeriod is not multiple of time-step
1427          (Thanks to Christopher L. Wolfe)
1428       - this fixes case where externForcingPeriod is an odd multiple of time-step
1429         (was wrong by half of time-step); update results of tutorial_global_oce_in_p.
1430      store index of time-record which is currently loaded:
1431       - works without any assumption on sequence of calls to EXTERNAL_FIELDS_LOAD ;
1432       - needed for the adjoint but not yet used because of extensive recomputations;
1433         (to be fixed soon)
1434    
1435    checkpoint62v (2011/04/02)
1436    o verification/1D_ocean_ice_column added to test Ian Fenty's
1437      pkg/seaice_growth.F modifications for improving sea ice code differentiability
1438    o update output of exp4, internal_wave, seaice_obcs, tutorial_plume_on_slope
1439      (new velocity statistics after changing maskInW & maskInS definition)
1440    o pkg/generic_advdiff with OBCS:
1441      use maksInW & maskInS in advective flux and in biharmonic diffusion calculation:
1442      equivalent to assumption of no tracer gradient outside the OB region.
1443      This will affect the results if using obcs+biharmonic diffusion.
1444      update output_adm.txt of experiment bottom_ctrl_5x5 (not expected since no obc)
1445    o pkg/obcs:
1446      change definition of maskInW & maskInS: leave OB edges inside (maskIn=1)
1447      (e.g., maskInW(OB_Ie)=1 ) so that velocity normal-component at OB is still
1448      in Interior region. No impact on solution but affects Velocity monitor stats.
1449    o pkg/ptracers (adjoint)
1450      New option AUTODIFF_PTRACERS_SPLIT_FILES for writing separate
1451      tape file for each tracer
1452    o model/inc/src and pkg/autodiff: add parameters that allow to turn
1453      of parts of the adjoint code at run time. For now, there are only
1454      useKPPinAdMode, useGMrediInAdMode, and useSEAICEinAdMode. These
1455      parameters are set in data.pkg.
1456      This is the lazy coward's version of doing this, but still useful for
1457      debugging. In order to do it right, everything needs to be moved to
1458      pkg/autodiff.
1459    o pkg/autodiff: fix global_sum_tile_ad.F by resetting adsumPhi at
1460      the end; this fixes the adjoint balancing code for open boundaries.
1461    o pkg/ctrl:
1462      - change behavior of xx_${varname}period to be analogous to exf-conventions:
1463        xx_${varname}period =   0.,  means time-independent control part
1464        xx_${varname}period = -12., means one-year-periodic monthly control part
1465      - introduce helper routine ctrl_init_rec (part of ctrl_init.F) to
1466        clean up ctrl_init a little, remove unused variables
1467      - ctrl_init: fixed the handling of the start/endrec for obcs-variables
1468      - move "call cal_GetMonthsRec" from s/r ctrl_get_gen to s/r ctrl_get_gen_rec
1469    
1470    checkpoint62u (2011/03/15)
1471    o model/src:
1472      - for the adjoint, change NonLin-FreeSurf initialisation sequence: fill-in
1473        h0Fac from INITIALISE_FIXED and reset hFac to h0Fac in INITIALISE_VARIA ;
1474      - in initialise_varia.F (except for ALLOW_DEPTH_CONTROL) remove 2nd call to
1475        INI_DEPTHS, INI_MASKS_ETC & INI_LINEAR_PHISURF.
1476    o pkg/ctrl/obcs/ecco:
1477      - remove obsolete, unused, and partially broken code:
1478        ctrl_obcsvol/ctrl_obcsbal/ctrl_volflux and code within
1479        ALLOW_CTRL_OBCS_BALANCE
1480      - put a stop statement into ecco/cost_obcsvol.F, but also add
1481        cost_obcsvol to ecco_ad_diff.list
1482    o pkg/ecco: fix counting cost function contributions for obcs (code
1483      by Matt M.) and diffkr for diagnostics
1484    o pkg/ecco, pkg/ctrl, pkg/grdchk:
1485      add cost penalty terms for initial uvel, vvel, eta controls
1486      and I/O for prior error files
1487    o pkg/mdsio:
1488       move mds_check4file.F from eesupp/src to mdsio_check4file.F ; add option
1489       (new argument) to check for tiled file in mdsioLocalDir : this fix the
1490       restart from pickup_som , pickup_dic (& dic_co2atm) with mdsioLocalDir.
1491    o pkg/ctrl:
1492     - ctrl_obcsbal.F, ctrl_obcsvol.F: replace last calls of ctrl_getrec by
1493       ctrl_get_gen_rec, put a stop statement into ctrl_getrec. Remove
1494       unused and superfluous variables
1495     - ctrl_get_gen_rec.F: catch the case of xx_genperiod=0.
1496    o pkg/ecco
1497     - enable adjoint of Stevens OB
1498    o pkg/ctrl/ecco/grdchk:
1499      - remove global declaration of tmpfldx/yz and tmpfldx/yz2.
1500        Fortunately, we do not have any tests for the numerous cpp-flagged
1501        option of "obcs as control parameters" so we will never know
1502        if this is an improvement (but at least now things compile).
1503      - remove an obsolete initialization from ecco_cost_init_barfiles.F
1504      - fix some problems within never used ifdefs to make the code compile
1505    o pkg/obcs:
1506     - Refine Interior mask definition to work with more complex OB (e.g.
1507       if OB_Ie < OB_Iw); In case default setting is not sufficient, allows to
1508       read in Interior mask from file. Check if Interior mask is consistent
1509       with OB list of indices.
1510    o pkg/seaice
1511     - beginning code for a seaice tracer package,
1512       but currently only used for seaice age: SEAICE_AGE
1513       SEAICE_num = 4
1514       iTracer = 1: area-weighted ice age
1515               = 2: volume-weighted ice age
1516               = 3, 4: template for one-year vs. multi-year ice
1517       data.seaice has new namelist SEAICE_PARM03 for arrays related to
1518       SEAICE_num
1519    
1520    checkpoint62t (2011/03/05)
1521    o pkg/obcs:
1522     - obcs_apply_uv.F: change to a 2 steps method, first tangential component;
1523       then normal component. This ensures that the normal component is set
1524       correctly even when it conficts with tangential setting from an other OB.
1525       Affects results of test-experiment seaice_obcs: update the output.txt
1526    o pkg/obcs:
1527     - add code to monitor statistics of dynamical fields at OB.
1528     - take OBCS_BALANCE code out of obcs_calc.F into new S/R OBCS_BALANCE_FLOW :
1529       - fix to OBCS_BALANCE code (right hFac ; deal with simple OB intersection).
1530       - change default: balance the Net inflow through all OB (instead of balancing
1531         each OB separately); keep the old method if setting OBC_balanceFacX < 0.
1532     - switch on useOBCSbalance in dome experiment: only correct Western OB outflow
1533       to match Nortern OB inflow (OBCS_balanceFacN=0).
1534    o pkg/seaice:
1535     - redefined actual sea ice age to be ICEAGE/HEFF ifdef SEAICE_AGE_VOL
1536    o pkg/seaice (seaice_growth v 1.113):
1537     - reverting seaice_growth to v 1.111 in order to have code with exact bit
1538       compatibility with MITgcm_contrib/ifenty/Fenty_seaice_thermo_code_merge
1539       CPP option SEAICE_OCN_MELT_ACT_ON_AREA removed in v 1.112 is reintroduced
1540       runtime flag SEAICEareaFormula is kept but is inactive
1541    o model/src:
1542     - add new param to scale curvilinear grid distance and area when using
1543       a different sphere radius from the grid-files.
1544     - test/check multi-threads EXCH applied to local variable (cg2d_x)
1545    o adjoint:
1546     - enable adjoint of Stevens OB
1547     - add dummy_in_dynamics to enable extraction of ADJrhoinsitu
1548       (a bit delicate because of potentially modified adj. common block structure;
1549       current switch is ALLOW_AUTODIFF_MONITOR_DIAG, could be changed later)
1550    
1551    checkpoint62s (2011/02/15)
1552    o pkg/seaice (seaice_growth v 1.112):
1553     - introduce SEAICEareaFormula run time parameter, which selects the recipe for
1554       computing the ice cover tendency from effective thickness tendencies. Include
1555       Ian Fenty's formula.
1556     - remove 'undef SEAICE_OCN_MELT_ACT_ON_AREA' which may now be achieved using
1557       SEAICEareaFormula.
1558     - simplify notations for the various d_HEFF/d_AREA terms.
1559    o pkg/gmredi:
1560     - add Boundary-Value-Problem bolus transport (Ferrari etal, OM 2010) code
1561       from Christopher Wolfe (UCSD); add partial cell factor in vertical derivative;
1562       add a verification test-run (front_relax.bvp) to test GM_useBVP.
1563    o pkg/seaice (seaice_growth v 1.111):
1564     - for SEAICE_DO_OPEN_WATER_GROWTH, replace Gael's implementation with Ian's.
1565     - the new SEAICE_DO_OPEN_WATER_MELT allows open-water air-sea heat fluxes to
1566       also melt ice.
1567    o pkg/seaice:
1568     - McPhee formula for Ice-Ocean fluxes (provided by Ian Fenty).
1569     - can be used by #define MCPHEE_OCEAN_ICE_HEAT_FLUX in SEAICE_OPTIONS.h
1570    o pkg/cheapaml:
1571     - from Nico Wienders: New version of this package.
1572    o pkg/flt:
1573     - add CPP options to prevent floats to re-enter the opposite side of
1574       a periodic domain (default: keep periodicity)
1575    o pkg/gmredi:
1576     - apply exchange to GM_PsiX,GM_PsiY to get valid values near CS-corners
1577       (needed for multi-dim advection).
1578     - switch on GM Advective form in global_ocean.cs32x15 and update output.txt
1579    o model/src:
1580     - fix wrong re-setting of addMass array (ALLOW_ADDFLUID) for atmospheric run.
1581    o tutorial_tracer_adjsens
1582     - extend to NLFS and replace maskC by hFacC
1583       (change reference output accordingly)
1584    
1585    checkpoint62r (2011/01/24)
1586    o testreport:
1587     - add option -deloutp (-do) to remove output file after successful run
1588     - add option -mfile (-mf) for MPI machile-file and for each test-exp,
1589       extract exact list of procs from this file ; adjust COMMAND by
1590       replacing TR_MFILE & TR_NPROC with local machile-file & Nb of MPI procs.
1591    o pkg/ecco: replace old ineffective way of penalizing deviations from
1592      first guess (of obcs) with code by Matt Mazloff
1593    o pkg/ctrl: add code that allows the use of ALLOW_OBCS?_CONTROL without
1594      exf/cal
1595      - ctrl_init: fix initialisation (computation of diffrec) for obcs-ctrl
1596        and handle case of obcs?period == 0
1597        Not affected by these changes: There is still an inconsistency in
1598        the computation of start/endrec for the obcs variables for ALLOW_CAL
1599        defined (see comment by Menemenlis, 7-Mar-2003)
1600      - make S/R ctrl_get_gen_rec return something meaningful even if
1601        ALLOW_CAL is not defined
1602      - ctrl_getobcs?: simplify code so that it does not need to use
1603                       S/R exf_swapfields
1604    o testreport:
1605       allow to test MPI with different number of processors for each experiment:
1606       create file "SIZE.h.mpi" in each build dir.
1607       Note: update of "-command" argument not yet implemented.
1608    o model/src, pkg/autodiff, pkg/ecco, pkg/seaice:
1609      alleviate the need for additional 3D tapes when using
1610      the non-inear free surface in the adjoint. This is done
1611      by adding an 'update' of hfacc etc. to their current
1612      value at the beginning of forward_step.F.
1613    o pkg/seaice
1614      seaice_lsr: move stress-divergence computations out of outer pseudo-
1615      timestepping loop
1616    o pkg/obcs/obcs_prescribe_read.F: move 'CALL OBCS_EXTERNAL_FIELDS_LOAD'
1617      up, so that the calls of the ctrl_* subroutines are really at the end
1618      of the routine.
1619    o pkg/gmredi:
1620      allow to specify a 2-D horizontal map and a 1-D vertical profil
1621      as scaling factor for Isopycnal diffusivity (Redi) and GM diffusivity.
1622    o pkg/seaice:
1623      move lsr iterations from seaice_dynsolver to seaice_lsr.
1624    o pkg/seaice:
1625      reduce memory footprint of seaice mutldim advection tapes,
1626      by using a 2D tape independent of the generic_advdiff ones,
1627      and setting GAD_AREA=1 etc. rather than GAD_AREA=101 etc.
1628    
1629    checkpoint62q (2010/12/29)
1630    o model/src:
1631      - check horizontal grid-spacing for unset or zero/negative values.
1632      - change AD test hs94.1x64x5 to be truly a 2-D set-up.
1633    o pkg/flt:
1634      - use (recent) mdsio S/R MDS_READVEC_LOC instead of local FLT_MDSREADVECTOR
1635      - precision of input and output files set according to readBinaryPrec
1636        and writeBinaryPrec (previously always 64.b), pickup remains at 64 bits.
1637      - initial float position from tiled file was not converted to index space
1638        (looks like a bug): fixed to make it similar to initial pos. global file.
1639    o global_ocean.cs32x15:
1640       change SIZE.h of AD set-up to get same tiling as with MPI.
1641       Update output_adm, output_adm.thsice (pass@14) & output_adm.seaice (fail@11)
1642    o model/src:
1643       add flag to control printing of domain fields (bathymetry, hFac ...) in
1644       ini_mask_etc (call to plot_fieds_xy*).
1645    o pkg/thsice:
1646       if useEXF, some forcing fields are not valid in overlap: fixed by computing
1647       over the interior only + apply EXCH at the end (like with SEAICE advection).
1648    o pkg/mdsio:
1649      - add 2 arguments to S/R MDS_PASS_R4/8toRL/S for overlap size of buffer
1650        to copy to/from, so that it can be used to replace MDS_PASS_WH_R8toRL/RS.
1651      - change barrier call for safe multi-threads access to 3-D shared buffer.
1652      - MDS_READ/WRITEVEC_LOC use buffers from MDSIO_BUFF_3D.h (instead of local ones)
1653      - replace call to MDS_PASS_WH_R4/8toRL with call to MDS_PASS_R4/8toRL and
1654        remove the 4 S/R MDS_PASS_WH_R4/8toRL/S.
1655    o pkg/flt:
1656      - add fourth-order Runge-Kutta integration
1657      - add basic exch2 support (only 1 facet supported so far!)
1658    o pkg/mdsio+rw:
1659      new S/R to read local (or tile independent) vector (read counterpart of
1660       mds_writevec_loc, and front-end write_glvec_rl/rs).
1661    o global_ocean.cs32x15: additional input_ad.seaice experiment
1662        that uses pkg/seaice rather than pkg/thsice.
1663        (using multidim advection for seaice)
1664    o towards more F95 syntax for array specification in namelist:
1665      - change "data.diagnostics" (data.ptracers was changed before checkpoint62p)
1666        of all verification experiments.
1667           e.g.:    line: fields(1,3)='ETAN    ','ETANSQ  ',
1668          was changed to: fields(1:2,3)='ETAN    ','ETANSQ  ',
1669      - finish adding "-DNML_EXTENDED_F77" to DEFINES list in pgf77 and g77 optfiles
1670    o global_ocean.cs32x15: additional input.seaice experiment
1671        that uses pkg/seaice rather than pkg/thsice.
1672    
1673    checkpoint62p (2010/12/17)
1674    o pkg/thsice: rename (ad tape index) iicekey as ticekey, and move it
1675        to THSICE_SIZE.h to avoid conflict with pkg/seaice.
1676    o pkg/seaice: add seaice_diffusion.f seaice_map_thsice.f to adjoint.
1677        allow for use of multim. advection in seaice adjoint.
1678    o pkg/seaice: add diagnostics for snow precipitation and sublimation flux
1679      - first attempt to close budgets by taking into account the freshwater
1680        flux implied by the sublimation of snow and ice. So far only the
1681        volume budget is closed, turn on with soon-to-be-retired-again CPP-Flag
1682        SEAICE_ADD_SUBLIMATION_TO_FWBUDGET
1683    o eesupp/src:
1684      new S/R with new option (NML_EXTENDED_F77) to change array specification
1685      from F95 standard to commonly accepted extended F77 form.
1686      This would allow to use F95 syntax in namelist (needed with gfortran 4.4.5)
1687      and to revert back to the original syntax (with -DNML_EXTENDED_F77)
1688      for less tolerant f77 compiler (e.g., pgf77, g77).
1689    o globalFiles:
1690      commented out in parameter file "data" since it's not safe with MPI
1691      (e.g., wrong on aces); keep it if useSingleCpuIO=T (but not doing much
1692      in this case); no longer commented out in restart test (tst_2+2).
1693    o add adTapeDir to specify a special directory where adjoint tapes are
1694      written/read (adread_adwrite.F). adTapeDir is specified in data/PARM05
1695      and cannot be used together with mdsioLocalDir.
1696    o nesting pkgs:
1697      - packages_init_variables : put call to OBCS_INIT_VARIABLES in last position
1698      - update Gianmaria's Nesting pkgs (from Contrib/nesting_sannino)
1699      - add parameter files + utils dir + output from short run on beagle.
1700    o pkg/seaice:
1701        fix seaice_growth.F store directives; update results of exp. lab_sea.ad
1702    o pkg/seaice: explicitly store tsurfloc in seaice_solve4temp.F to avoid
1703      unnecessary copying in adjoint code, requires new parameter NMAX_ITER
1704    
1705    checkpoint62o (2010/11/25)
1706    o pkg/exf:
1707      - change CPP option EXF_VERBOSE to run-time logical param exf_verbose.
1708    o pkg/seaice:
1709      - seaice_ocean_stress: split a loop for better vectorization of the
1710        adjoint code
1711      - seaice_growth.F: fix bug in conservation of freshwater connected to
1712        capping of heff, put contribution into d_HEFFbyNEG
1713      - replace irritating parameters SEAICE_latentWater/Ice and SEAICE_sensHeat
1714        by something more sensible (parameters that are what their name implies)
1715      - change some defaults, so that by default exf-parameters are used for
1716        things like rhoAir, cpAir,latent/sensible heat parameters, in order
1717        to reproduce the old results, many data.seaice now contain funny values
1718        for cpAir and latent heat of sublimation
1719    o packages_readparms.F: move exf_readparms up in line so that
1720        exf-parameters are visible for other packages (e.g. seaice)
1721    o debugMode & debugLevel=2:
1722      - differentiate between debugMode & debugLevel=2:
1723        debugMode: controls printing of debug messages (sequence of S/R calls).
1724        debugLevel: controls printing of algorithm intermediate results and stats.
1725      - remove "if debugLevel=2 => debugMode" but keep "debugMode =>  debugLevel=2";
1726        => allows to print debug-stats without all sequence of call messages.
1727      - switch control of debug print from debugLevel to debugMode in many S/R.
1728    o pkg/obcs (obcs-sponge):
1729        fix bug that was introduced on Oct 25 (in dynamics.F v1.151): put back the
1730        call to OBCS_PRESCRIBE_EXCHANGES (need to exch gU,gV when using obcs-sponge)
1731    o pkg/generic_advdiff:
1732      - record overlap minimum size for each advection scheme;
1733      - refine criteria on overlap minimum size;
1734      - check and stop (in gad_check) if overlap size is too small.
1735    o pkg/obcs:
1736      - with ptracers: remove multiple calls to obcs_apply_ptracer (only done
1737        once, in ptracers_implicit.F)
1738      - with seaice: remove test on empty file name in obcs_apply_seaice (always
1739        apply OB values when tile has OB)
1740    o model/src, coriolis setting:
1741      - integer parameter "selectCoriMap" (=0,1,2) replaces 3 logical
1742        useConstantF, useBetaPlaneF, useSphereF ; can now read coriolis from
1743        files (selectCoriMap=3) with any grid.
1744      - add parameter "fPrime" for constant second Coriolis coeff (default=0).
1745    o pkg/seaice/seaice_growth.F:
1746        a few cosmetic changes that reduce the number of lines of code
1747    o pkg/obcs: add boundary conditions following Stevens (1990)
1748      - the code follows old MOM/NAOSIM code
1749      - so far it is only implemented for the eastern and western boundaries
1750        and NOT for pTracers
1751    o pkg/rbcs:
1752      - replace rbcsInIter by rbcsForcingOffset, the time in seconds at the
1753        beginning of the first rbcs forcing period.
1754      - add option rbcsSingleTimeFiles that makes rbcs read forcing data like the
1755        offline package, i.e., one file per time, labeled by iteration number;
1756        deltaTrbcs sets the timestep with which the data was generated;
1757        rbcsIter0 is the forcing iteration corresponding to rbcsForcingOffset.
1758      - rbcsForcingCycle=0 makes forcing non-cyclic.
1759      - make arithmetic safe for negative times and odd forcing periods.
1760    
1761    checkpoint62n (2010/11/09)
1762    o pkg/seaice:
1763        fix masking in free-drift S/R ; update results of exp. lab_sea.fd
1764    o pkg/obcs:
1765       New S/R to copy tracer value from the OB location to narrow band region
1766        (width = same as overlap) beyond the OB: preserve OB value (needed for
1767        high-order scheme) which were overwritten by EXCH call if in overlap
1768        region. Applied to theta, salt, ptracer and advected seaice variables.
1769       With seaice: use maskInC in similar way as in gad_advection.F,
1770        in seaice_advection.F and advect.F.
1771       Update output of experiment seaice_obcs and change exp4 to test OBCS with
1772        4th order Adv.Scheme. for pasive salt and ptracer.
1773    o tools/genmake2:
1774      - when looking for an optfile (not specified), only search for Fortran compiler
1775        (remove sym-link test + setting of CPP + makedepend check + C-compiler check)
1776      - in get_fortran_c_namemangling: use "$CC $CFLAG" to compile C test programm
1777        (instead of "$MAKE genmake_test.o" since an existing Makefile can be wrong)
1778      - set default for CPP to "cpp -traditional -P" (was the case without specifying
1779        an optfile, but otherwise default was just "cpp".
1780      - comment out PLATFORM=$p_PLATFORM (no idea where p_PLATFORM comes from)
1781      - when "CC" is not set in the optfile, look for possible C compiler
1782        (instead of just setting CC=cc)
1783      - put back version v.169 modif (from 2008/02/15), was dropped in v.173 changes:
1784        => add a ".F" to ".o" rule for source files with no "#include" (such as
1785           port_rand.F); otherwise, default ignores FOPTIM and just uses FFLAGS.
1786      - move gfortran before g77 in list of possible Fortran compiler (consistent
1787        with reference compiler switch from g77 to gfortran)
1788    o pkg/seaice:
1789      o remove SEAICE_OLD_AND_BAD_DISCRETIZATION-code, add a test to
1790        seaice_check that stops the model, when the CPP flag is used.
1791      o seaice_growth.F: make capping of ice volume conserving by returning the
1792        capped ice as freshwater to EmPmR. This does not change the verification
1793        experiments but will change runs where the capping is acutally active
1794    o change reference platform+compiler from faulks+g77 to baudelaire+gfortran
1795      (except the 2 fizhi test exp.); update output of exp.: bottom_ctrl_5x5,
1796         global_ocean.cs32x15 (icedyn, thsice, AD thsice), global_ocean_ebm (AD),
1797         lab_sea (fd, hb87, salt_plume), MLAdjust (3/5) and vermix (dd)
1798    o tools/genmake2:
1799      - merge genmake_warnings & genmake_errors into 1 log file: "genmake.log")
1800      - change DUMPSTATE default to false (can use "-ds" option to switch it to T)
1801      - clean previous genmake log files before anything else.
1802      - change Makefile to remove testreport log files (*.tr_log) and genmake log
1803        files only with "CLEAN" target (instead of "Clean");
1804    o pkg/generic_advdiff:
1805      Change OBCS in multiDim advection (gad_advection.F):
1806       Use maskInC to prevent intermediate update of tracer-field in OB regions,
1807       thus keeping current-time-step OB values; and remove the call to OBCS_APPLY
1808       which were applying future time-step OB values.
1809      This way, all explicit calculations use current-time-step OB values
1810       (simpler and more consistent).
1811      Affects results when set-up uses time-varying OBC and multi-dim advection;
1812       update output of experiment seaice_obcs.
1813    o pkg/seaice:
1814      move OPTIONS (formerly locally defined) to SEAICE_OPTIONS.h:
1815       this includes SEAICE_GROWTH_LEGACY (+ SEAICE_DO_OPEN_WATER_GROWTH &
1816         SEAICE_OCN_MELT_ACT_ON_AREA ) and SEAICE_SOLVE4TEMP_LEGACY.
1817      Default (pkg/seaice/SEAICE_OPTIONS.h) is to define SEAICE_SOLVE4TEMP_LEGACY
1818       but leave SEAICE_GROWTH_LEGACY undef ; For now, keep verification exp
1819       unchanged (SEAICE_GROWTH_LEGACY defined in */code*/SEAICE_OPTIONS.h)
1820    o pkg aim (2010/10/26):
1821      - Introduce ALLOW_INSOLATION, moving toward a more general incoming solar radiation
1822        formulation with obliquity, eccentricity, ... as run-time parameters,
1823      - Introduce diagnostics for top-of-the-atmaophere incoming solar radiation and
1824        upward shortwave radition at the surface (all-sky and clear-sky).
1825    o pkg/obcs:
1826      - writing sections with globalFiles=T does not work: switch to tiled-files
1827        when writing sections for OBCS (change pkg/rw/write_rec.F accordingly).
1828      - fix index bug (OB_Ie -> OB_Iw_) in obcs_apply_uvice.F
1829      - apply OBCS_SEAICE_COMPUTE_UVICE to both uice and vice at all obcs
1830    
1831    checkpoint62m (2010/10/21)
1832    o pkg/seaice: vectorize seaice_solve4temp.F
1833      - move iterations loops outside of i/j-loops
1834      - requires 2D arrays for TB and effConduct
1835      - add 2D iceOrNot to replace HICE_ACTUAL.GT.0, as HICE_ACTUAL is
1836        modified in this routine
1837      - a little bit of clean up, adjusting indentation, etc.
1838      - replaced a few TEN**a by exp(a*log(10.)) in new code for better
1839        performance and '**TWO' by '**2' (because TWO is a float),
1840        replaced ONE, ZERO
1841    o eesupp/src:
1842       fix flow dir for exch1_z_RX_cube, exch1_uv_RX_cube & exch1_bg_RX_cube
1843    o pkg/seaice/seaice_growth.F
1844      Revision 1.89 of seaice_growth.F completes the overall october 2010 revision and
1845      merging process. The merged routine has two branches, and one activates the 'evolution'
1846      branch by setting SEAICE_GROWTH_LEGACY to undef (at the top of the routine for now).
1847      In summary, here is what the '10/10 revision' did consist of
1848        part 1: seaice_growth.F revisions 1.71 to 1.75
1849          - Preliminary seaice_growth.F clean-up, keeping test results strictly unchanged.
1850            The emphasis here was on improving readability (e.g. by trying to use meaningful
1851            variable names) and modularity (e.g. by adding arrays to store heff etc. updates).
1852        part 1.5:
1853          - revising the lab_sea experiment to make it a more useful (i.e. stable
1854            and representative of an actual model run). This was done by generating a
1855            (winter) pickup to start from, switching back the main experiment dynamic
1856            solver from evp to lsr, having one of the experiments use the free drift solution.
1857        part 2: seaice_growth.F revisions 1.76 to 1.85
1858          - Sorting out hard-coded constants that prevented heat and fresh water conservation.
1859          - Sorting out the various fields units and sign (set early on and reset at the end)
1860            to avoid numerous scalings/re-scalings. By v1.85 the basic unit for ice, heat and
1861            fresh water stock is 'effective ice meters', and >0 implies more ice/snow.
1862          - Using tendency terms arrays (d_HEFF* etc.) to alleviate remaining code locks,
1863            and simplifying logical expressions to further improve readibility.
1864        part 3: seaice_growth.F revisions 1.86 to 1.89
1865          - Re-organize the blocks of code more logically.
1866          - Merging the '_if.F' pieces that add something new.
1867    o pkg/thsice:
1868      - vectorize thsice_solve4temp and thsice_get_exf.
1869        Problem: thsice_solve4temp has an unvectorizable statement that
1870        might also be problematic for TAF
1871      - thsice_get_exf: add the ALLOW_BULK_LARGEYEAGER04 CPP-flag. This
1872        does not change the verifcation experiment, but will change all
1873        experiments that have this flag undefined (not tested in verification);
1874        a little reorganization to save a few 2D fields and recomputations
1875      - 1st step of revisiting thsice adjoint (major recomp. sorted out)
1876      - 2nd step:  fix some store dirs
1877        o seems to work somewhat, i.e. using ifort but not g77
1878        o likely cause are incomplete init. or recomputation
1879        o start verification/global_ocean.cs32x15/input_ad.thsice
1880    o pkg/obcs: add support for exch2
1881      - the position of the boundary and prescribed values are specified using
1882        a global domain with exch2 facets stacked
1883        - in x for N,S boundaries (like W2_mapIO=-1)
1884        - in y for E,W boundaries (so E,W boundaries do not overlap)
1885    o pkg/mdsio: add support for writing global sections with exch2
1886        file layout is as for obcs described above:
1887        - for x-z sections, facets are stacked in x (like W2_mapIO=-1)
1888        - for y-z sections, facets are stacked in y
1889    o pkg/thsice:
1890       - change a few routines for better vectorization: thsice_albedo.F,
1891         thsice_step_temp.F, and in thsice_calc_thickn.F. Results are
1892         not affected, but in particular the latter routine has changed
1893         dramatically (not necessarily easier to read now).
1894       - re-arrange calculation in THSICE_SOLVE4TEMP: move outside of i,j loops
1895       iteration loop and call to S/R THSICE_GET_BULKF & THSICE_GET_EXF.
1896    o verification/lab_sea:
1897      - overhaul of the forward model experiments. The main motivation
1898        for this revision is that lab_sea has proven quite fragile (when
1899        changing the sea-ice code, and switching platforms) to a point
1900        when failures were very hard to attribute to specific code problems.
1901      - the suspected reason for this fragility is noise amplification by evp so,
1902        to start with, we decided to replace evp with lsr in the main experiment.
1903      - the input.lsr experiment thus became obsolete and was removed.
1904      - it was replaced with the input.fd experiment that uses an
1905        analytical "free drift" solution as the ice velocity field.
1906      - Taken together, input (lsr), input.fd (free drift) and input.hb87 (evp)
1907        will hopefully allow us to discriminate problems due to dynamic solvers
1908        from problems due to the thermodynamic code. input.salt_plume (lsr) allows
1909        us to test additional options, along with the salt plume package.
1910      - Finally a pickup was generated (at the end of a one year run) to
1911        make the tests more representative of an actual model run. Previously
1912        the tests starting point was a 1m thickness of ice everywhere.
1913    o pkg/seaice:
1914      - introducing S\R seaice_freedrift.F that compute the
1915        analytical solution to an approximate ice momentum
1916        equation (i.e. the simple stress/coriolis balance).
1917      - define SEAICE_ALLOW_FREEDRIFT to trigger the computation
1918        of the free drift velocity field, and enable its use.
1919        To actually use the free drift solution as the model ice
1920        velocity field set SEAICEuseFREEDRIFT to .TRUE. in data.seaice.
1921    o move "useOASIS" from PARAMS.h to EEPARAMS.h and read it from "eedata"
1922    
1923    checkpoint62l (2010/10/04)
1924    o pkg/seaice:
1925      -fix the USE_ORIGINAL_SBI version (for variable freezing point);
1926      -use "celsius2K" in SEAICE_VARIABLE_FREEZING_POINT and in new
1927       version (with USE_ORIGINAL_SBI undef);
1928    o add hooks for new packages OASIS, the package will follow
1929      (hooks exclude the seaice pkg for now)
1930    o pkg/autodiff: ALLOW_AUTODIFF_WHTAPEIO
1931      Option to use mdsio_read_whalos.F/mdsio_write_whalos.F,
1932      rather than mdsio_readvector.F/mdsio_writevector.F, within
1933      adread_adwrite.F to read/write adjoint-related tapes to disk.
1934    o eesupp and pkg/mdsio: ALLOW_WHIO
1935      Option to write/read 2D fields to files including tiles halos.
1936      The main purpose is for adjoint related "tape I/O".
1937      The secondary purpose is for debugging phases.
1938      A word on those rather specifically intended purposes.
1939      The code was meant to be stripped down to the bare minimum.
1940      Typically, there is a unique and basic mapping to the global
1941      buffer (tile by tile, then proc by proc, then level by level), and
1942      byteswaps and meta-files are omitted. Indeed the (*_WH*) code is not
1943      meant to generate user friendly outputs of various shapes and forms.
1944      Rather it is intended, for the knowledgeabale developers,
1945      to be largely independent of the many mdsio options, to allow
1946      outputs of tiles+halos in debugging phases and in adjoint runs,
1947      and to allow some flexibility in tuning (adoint) I/O depending on each
1948      file system behavior. With regard to tuning, most of the potential knobs
1949      (to leave files open, to allocate the I/O indep. of usesinglecpuio,
1950      to specify directories, to specify the typical size of I/O calls, etc.)
1951      are not yet included, and will be added if they prove useful.
1952    o pkg/seaice:
1953       fix uninitialised arrays in USE_ORIGINAL_SBI version of seaice_solve4temp.F
1954    o pkg/seaice:
1955       new S/R seaice_solve4temp.F: this is the merged version of Ian Fenty
1956       code (seaice_budget_ice_if.F) which enable to recover old standard
1957       code (seaice_budget_ice.F) when option USE_ORIGINAL_SBI is defined.
1958       temporary: add "#define USE_ORIGINAL_SBI" at the top of seaice_solve4temp.F.
1959    o model/src (rStar):
1960       use simple average (not area weighted) of rStarFac at U,V point when using
1961       vectorInvariant and selectKEscheme=1,3 (consistent with mom. vertical advection)
1962       update output of exp. fizhi-cs-32x32x40 and fizhi-cs-aqualev20.
1963    
1964    checkpoint62k (2010/09/17)
1965    o adjoint
1966       * changed verification/global_ocean.cs32x15 ; adjoint now tests
1967         Adams-Bashforth 3 + NLFS + RSTAR
1968       * some more modifs required for ECCO-GODAE v4
1969    o pkg/seaice
1970       add SEAICE_AGE_VOL option to use volume instead of area for
1971       integrating SEAICE_AGE
1972    o model/src:
1973       first check-in of sigma & hybrid-sigma coordinate code ; also includes
1974       non-linear free-surface parts ; but pressure-gradient not yet coded.
1975    o pkg/ptracers:
1976       option for ptracer to convert Salt Relax into additional EmP.
1977        tested in exp. global_ocean.90x40x15.dwnslp (update output)
1978    
1979    checkpoint62j (2010/08/25)
1980    o pkg/ggl90:
1981       other minor changes: remove 3-D temp array gTKE (+ add argument myIter)
1982    o pkg/dic: car_flux.F, phos_flux.F
1983      - reduce number of exp-calls in order to improve performance
1984      - clean up a little (replace fields by their macros, etc., fix
1985        typo in CPP-flag)
1986    o pkg/ggl90: minor changes
1987      - GGL90diffKrS was removed --> always use GGL90diffKr
1988      - GGL90viscAr was removed --> replaced with GGL90viscArU, GGL90viscArV
1989      - hack of mxlMaxFlag=2 --> ensure mixing between first and second level
1990        (commented out for now)
1991      - change in max/min operations to ensure that smoothing is ok
1992      - smoothing of GGL90viscAr was moved to ggl90_calc.F (as done for GGL90diffKr)
1993      - always use diffKrNrT as background profile (i.e. never use diffKr field)
1994    o pkg/cfc: bug fix, AREA(i,j,1,bi,bj) -> AREA(i,j,bi,bj)
1995    o pkg/dic:
1996      - model/src/impldiff.F: if TARGET_NEC_SX, extend loop ranges for better
1997        vectorization
1998      - small bug fix in insol for the unlikely case of a cartesian grid
1999      - towards vectorizing the dic package: bio_export.F, car_flux.F, phos_flux.F
2000        + now vectorize, which also removes adjoint recomputations;
2001        + replace integer maksp1 by _RL maskp1
2002        + replace a**x by exp(x*log(a)) in phos_flux.F for speed
2003    
2004    checkpoint62i (2010/07/21)
2005    o pkg/flt:
2006      - with OBCS: stop floats which enter the OB region
2007    o model/src:
2008      - use tempVertAdvScheme & saltVertAdvScheme (instead of horizontal ones)
2009        for implicit vertical advection.
2010    o pkg/seaice:
2011     - account for melting in seaice age evolution.
2012     - remove double counting of seaice ridging effect on seaice age.
2013    
2014    checkpoint62h (2010/06/18)
2015    o pkg/exch2:
2016     - remove exch2_*xy_rx files: call was replaced with exch2_*3d_rx(myNz=1).
2017    o tools/genmake2
2018      - remove "-pdefault" option: redundant with the use of "packages.conf";
2019      - remove file pkg/pkg_default : set the default as a pkg group
2020        ("default_pkg_list") defined in pkg/pkg_groups;
2021      - fix for case pkg/pkg_depend is missing (was hanging before);
2022      - add option "-pgroups" to specify a different pkg_groups than the default.
2023    o verification/adjustment.cs-32x32x1:
2024       add a "minimal" set-up test (code_min & input_min) which only compiles
2025       eesupp/src and the 2 pkgs (exch2 & debug) which don't need model/src & inc.
2026    o tools/genmake2
2027      - extend pkg_depend rules to model & eesupp (e.g., if model depend on [pkg]))
2028      - fix details of checking for mnc & profile pkg when NetCDF is unavailable.
2029    o pkg/exf: merge exf_bulk_largeyeager04 into exf_bulkformulae because these
2030      files are nearly the same anyway.
2031      Step 1: make exf_bulkformulae look like exf_bulk_largeyeager04:
2032       - redefinition of tau(i,i) (by a factor of ustar)
2033       - 1./exf(Const/T) -> exf(-Const/T) (big change in the results)
2034       - replace rhonil by rhoConstFresh in computation of evap (bug fix)
2035       - replace u/vstress=tau*rd*ws*cw by tau*rd*u/vwind (changes results)
2036       - replace
2037         rd(i,j)= rdn(i,j)/(exf_one - rdn(i,j)/karman*psimh )
2038         shn    = sh(i,j,bi,bj)*rd(i,j)/rdn(i,j)
2039         by
2040         shn    = sh(i,j,bi,bj)/(exf_one - rdn(i,j)/karman*psimh )
2041         (changes results)
2042       -> exf_bulkformulae v1.22,
2043          update verification experiments lab_sea, offline_exf_seaice, seaice_obcs
2044          (lab_sea: output.hb87.txt 1.11, output.lsr.txt 1.25, output.salt_plume.txt 1.13,
2045                    output.txt 1.63
2046           offline_exf_seaice: output.seaicetd.txt 1.7
2047           seaice_obcs: output.txt 1.10)
2048      Step 2: do the actual merge and remove exf_bulk_largeyeager04.F
2049       -> exf_bulkformulae v1.23,
2050          unfortunately requires updating lab_sea.salt_plume (6 matching digits),
2051          and global_ocean.cs32x15.icedyn (only 11 matching digits)
2052      Also update output_adm of exp. lab_sea (all 4) and offline_exf_seaice.
2053    o adjoint of exch-1:
2054     - pass high-level EXCH S/R through TAF (eesupp/src/exch_ad_diff.list)
2055       (note: was already like this when using EXCH-2) and remove flow dir
2056       and hand-written AD version of high-level EXCH S/R (pkg/autodiff);
2057     - provide flow-dir for low-level exch1 S/R (eesupp/src/exch1_ad.flow);
2058     - update pkg/exch2 diff list.
2059    
2060    checkpoint62g (2010/05/19)
2061    o eesupp/src (exch-1):
2062     - split exch_rx.F into Forward S/R (exch1_rx.F) and Adjoint S/R (exch1_rx_ad.F)
2063       and remove argument "simulationMode"; same thing for all exch_*rx_cube.F
2064       (renamed to exch1_*rx_cube.F).
2065     - change accordingly exch_*_rx.template and AD version in pkg/autodiff
2066       to call new exch1 S/R ; update Makefile and .cvsignore.
2067     - replace call to exch2_xy_rx S/R with exch2_*3d_rx(myNz=1) (will remove
2068       exch2_xy_rx later)
2069      Note: after updating your code, need to run "make clean" in eesupp/src
2070    o test experiment bottom_ctrl_5x5:
2071       new output_adm.txt with fewer grdchk & less monitor output.
2072    o model/src:
2073      remove the call to ini_cori in initialise_varia.F (just keep the usual one
2074       in initialise_fixed.F). More consistent with coriolis & horizontal grid
2075       beeing treated in the same way (ini_grid is not called a 2nd time).
2076    o pkg/exf:
2077      - rewrite exf_bulk_largeyeager04.F for better vectorization, changes
2078      global_ocean.cs32x15/input.icedyn (11 digits of agreement), updated
2079      - fix adjoint (used worked for ALLOW_ATM_WIND defined, works for this now)
2080      - cosmetic changes to exf_bulkformulae.F to make it look more like
2081        exf_bulk_largeyeager04.F
2082    o eesupp/src (exch-1):
2083      - Fix AD EXCH code for 2-D domain special cases (Nx=1 or Ny=1).
2084      - Separate buffer filling and MPI sending: allow EXCH-1 to work for local
2085        array (non-shared) when using MPI+MTH. Also reduces number of BARRIER
2086        (even without using MPI).
2087      - Message mode: move RecvAck setting (indicator of buffer being ready)
2088        from send_put to recv_get S/R (was useless before, but not sure if
2089        it's much more useful now);
2090      - Switch the order of sync: MPI-proc 1rst and then threads;
2091      - take out spin-waiting code (#undef EXCH_USE_SPINNING), use BARRIER instead.
2092      - fix AD code for communication mode ='get' (but not used).
2093    o model/src:
2094      initialise dPhiHydX,dPhiHydY inside calc_grad_phi_hyd.F (so that TAF does
2095      not drop it in S/R mddynamics, producing NaN in hs94.1x64x5 AD-test exp).
2096    o utils/matlab/rdmnc.m: adapt to be able to use the generic matlab netcdf API
2097    o pkg/ctrl: require a specific set of control variables and exf-flags for
2098      adjoint of seaice (stop in ctrl_check.F if conditions are not satisfied)
2099    o model/src:
2100     a) 1rst version of a new driver S/R to turn-off output freq and flags after the
2101       1rst forward sweep, to avoid over-writing output files during recomputations
2102       recomputations (& grdchk); called from cost_final.F (& ctrl_init_ctrlvar.F ?)
2103     b) 2nd version:
2104      - add specific pkg S/R for seaice & ptracers (called from S/R TURNOFF_MODEL_IO);
2105      - switch-off more output flags (exf_monFreq, chkPtFreq, dumpInitAndLast,
2106         writePickupAtEnd) + seaice & ptracers output;
2107      - do not switch off MNC flags (otherwise, won't get admonitor netcdf file)
2108    o model/src:
2109      - new S/R rotate_uv2en_rl (..._rs) that rotates vector fields.
2110    o pkg/exch2:
2111      - remove "simulationMode" from arg. list of S/R EXCH2_RX1,2_CUBE ;
2112      - add argument "signOption" to EXCH2_RX1_CUBE (will be needed for SM exch).
2113    o pkg/autodiff & exch2:
2114      process exch_uv_agrid_3d_rx.f & exch2_uv_agrid_3d_rx.f through TAF
2115      (for now, only if ALLOW_EXCH2 is defined).
2116    o pkg/autodiff:
2117      - include PACKAGES_CONFIG.h in exch*ad.flow & exch*ad.F
2118        (not supposed to be in CPP_OPTIONS.h) to get ALLOW_EXCH2 defined correctly.
2119       + clean-up comments (_RS is not always real*4)
2120      - fix bug in ADEXCH_UV_3D_RX (without EXCH2, was calling the forward exch S/R)
2121      - add a stop in ADEXCH_UV_AGRID_3D_RX if trying to use it with EXCH2:
2122        was calling a forward exch2, which is wrong ; used in SEAICE & EXF pkgs.
2123    o testreport (AD-tests):
2124      no longer link files from dir "../input" (1rst link files from
2125      "../input_ad.[xx]" if secondary test "xx" and then from "../input_ad")
2126    
2127    checkpoint62f (2010/04/29)
2128    o model/src/the_main_loop.F:
2129      adjust store directives for seaice evp and multicategory according to
2130      pkg/ecco/the_main_loop.F
2131    o adjoint:
2132      global_sum_ad was incomplete (noted many times by many people ;)
2133      nice description by Jean U. as follows:
2134      * allreduce(var) in global_sum.F can be interpreted as
2135        reduce(sum) followed by broadcast of sum.
2136      * The adjoint of that is
2137        sum(adjoint) followed by broadcast(summed adjoint value)
2138        or in other words, allreduce(sum, adjoint vars)
2139      We were missing the sum(adjoint)!
2140      Benign, except(!) for "global" scalars appearing in tile loops (bi,bj)
2141      (noted by J.M. Campin, e.g., in cost_ssh_mean, variable offset).
2142      The fix should produce 16-digit accuracy between
2143      single-CPU multi-tile (e.g. nSx=2, nPx=1) and
2144      multi-CPU single-tile (e.g. nSx=1, nPx-2)
2145      We'll probably change this yet again shortly
2146    o eesupp/src:
2147      - fix global_sum_r4 (wrong from previous modif in Jun 2009; ever used ?)
2148    o pkg/icefront
2149      - ALLOW_SUBGLACIAL_RUNOFF option adds capability for time-evolving
2150        specification of addmass array based on a 2D field, which is added
2151        at bottommost wet level at each horizontal location.
2152    o model/src:
2153     horizontal grid initialisation (other than curvilinear): add code for Exch2 IO
2154     layout; (not always compatible with delX,delY setting; commented out for now).
2155    o pkg/exch2:
2156     change tile to processor setting (case nSy*nPy > 1): allows default model mapping
2157     (myX and myYGlobalLow) to be used for simple (1 facet, no blank tile) config.
2158    
2159    checkpoint62e (2010/04/15)
2160    o pkg/obcs:
2161      - fix wrong index in OBCS_SPONGE_V for Eastern-OB (reported by David Hebert).
2162    o pkg/dic:
2163      -fix bug in fe_chem.F for multi-tile (nSx*nSy > 1) set-up;
2164        (note: not presently tested in any forward verification exp.)
2165       update tutorial_global_oce_biogeo AD output file.
2166    o pkg/exf:
2167      - account for the variation of albedo as a function of zenith angle
2168        by defining ALLOW_ZENITHANGLE in EXF_OPTIONS.h
2169    o build_options:
2170     - rename "linux_ia64_ifort+mpi_ice_nas" to "linux_amd64_ifort+mpi_ice_nas"
2171    o pkg/dic:
2172      change DIC atmos-CO2 box (method 3, dic_int1=3) initialisation & restart:
2173      - use binary pickup file for restart;
2174      - initialise atmos-CO2 box from dic_pCO2 parameter;
2175      - fix multi-threaded.
2176    o pkg/rbcs:
2177     - clean-up RBCS code: add RBCS_OPTIONS.h file ; fix multi-threaded ;
2178       change (+ fix IO calls) type of array RBC_mask from _RL to _RS.
2179     - add RBCS to exp4 passive tracer 01 (rbcs was previously untested)
2180       and update output.txt
2181    o pkg/kpp:
2182     - add diagnostics for KPP non-local flux of Temp, Salinity and pTracers;
2183     - change diagnostic of KPP non-local term: output average of KPPghat*KPPdiffKzS
2184       (= ratio of KPP non-local (salt) flux relative to surface-flux) when
2185       using pkg/timeave & pkg/diagnostics (diag 'KPPghatK' replaces 'KPPghat ');
2186     - change pkg/offline to read-in average KPPghat*KPPdiffKzS from file
2187       KPP_ghatKFile (instead of the average of KPPghat from file KPP_ghatFile).
2188    o pkg/offline:
2189      fix bug in S/R OFFLINE_FIELDS_LOAD regarding surfaceForcing conversion factor
2190      (bug was added in version 1.10 on 2007-08-23).
2191    o pkg/offline:
2192      - no need to specify periodicExternalForcing, etc ... to use offline pack
2193      - offline input files no longer just single prec --> parameter offlineLoadPrec
2194    o verification/lab_sea:
2195      change AD test to multi-tile setup and update all 4 AD output.
2196      NOTE: while cost function values remain very similar,
2197      gradients are very different, although gradient checks are self-consistent
2198      Should try to get to the bottom of this (cost function summation order?)
2199    o pkg/dic:
2200      in carbon_chem.F, replace log10 (AUTODIFF) with explicit form to avoid
2201      a weakness of TAF that drops part of double precision in log10 derivative.
2202      <= changes removed since problem has been fixed in current TAF version 1.9.71
2203      update AD output of exp. tutorial_dic_adjoffline & tutorial_global_oce_biogeo.
2204    o pkg/ecco:
2205      add missing "_d 0" in cost_readers.F, cost_readtopex.F & cost_readtopexmean.F
2206      update all 4 lab_sea AD output.
2207    
2208    checkpoint62d (2010/03/22)
2209    o build_options:
2210      remove '-r8' (and '-i4') from linux_*pgf and linux_*ifort optfiles.
2211    o remove unbalanced quote (single or double) in commented line of source code
2212      (may cause some warning with some preprocessor/makedepend versions).
2213    o pkg/seaice:
2214      fix seaice_model.F for adjoint (gael) and update AD results of experiments
2215       lab_sea (std + evp + noseaicedyn) and offline_exf_seaice.
2216    o testreport:
2217      add option '-runonly' (short: '-ro') to just do the run part (without make).
2218    o eesupp: remove JAM communication code (obsolete).
2219    o add option to genmake2 & testreport to switch "_RS" type to "real*4"
2220      (if allowed in CPP_EEOPTIONS.h); update default CPP_EEOPTIONS.h and return
2221      to default CPP_EEOPTIONS.h for exp. inverted_barometer & solid-body.cs-32x32x1
2222      (update also the output).
2223    
2224    checkpoint62c (2010/03/02)
2225    o tools/build_options :
2226       move (some) old optfiles from build_options/ to build_options/unsupported/
2227    o model/src and pkg/exf
2228       surface relaxation -- separating data and data.exf options
2229       The point is to ensure that we specify the surface relaxation
2230       either in data or in data.exf (but not half and half) and to
2231       avoid an accidental relaxation to 0 (which happened if a time
2232       scale was specified but the file name was left empty)
2233    o model/src model/inc and pkg/mom_common
2234       ALLOW_3D_VISCAH/ALLOW_3D_VISCA4 => 3D specification of Viscosity
2235       => addition to the viscosity field as computed by others schemes
2236    o tools/build_options:
2237      - rename "_generic_mpi" -> "+mpi_generic" (like other "+mpi" optfile)
2238        but keep the former optfile for few weeks for smooth transition
2239    o pkg/ecco
2240      - allow user defined cost function contributions
2241         CPP: ALLOW_USERCOST_CONTRIBUTION
2242         USAGE: compute contributions in cost_usercost_all.F
2243      - note: this is identical to what ALLOW_GENCOST_CONTRIBUTION once was.
2244          the two options are complementary.
2245    o pkg/smooth
2246      - migration from contrib to the main repository
2247    
2248    checkpoint62b (2010/01/26)
2249    o pkg/monitor:
2250      - change back mon_printstats_rl.F & mon_stats_rl.F and add a stop
2251        (in case someone forgot to update customized pieces of code)
2252    o nonHydrostatic:
2253      - add Non-hydrostatic free-surface form (selectNHfreeSurf=1)(not fully tested);
2254      - add a simple 2-D experiment (short_surf_wave) to test it.
2255    o pkg/icefront:
2256       adding the shell of, and the hooks to, a new package that
2257       will model melting and freezing of vertical glacier ice fronts
2258    o momentum:
2259      add diagnostics of momentum tendency from Hydrostatic pressure gradient
2260       (without surf.pressure term: would need a 2nd filling since implicit term).
2261    o add 3 "_d 0"s so that fizhi compiles with xlf on iblade, and replace
2262      two " &end" by " &" (in fizhi-cs-*) because S/R NML_SET_TERMINATOR
2263      cannot deal with the former
2264    o cleaning:
2265      - remove all (except OpenAD) old TLM output from results_ad dirs.
2266      - remove unused S/R (MDSWRITEMETA, DIAGNOSTICS_ADD2LIST, old DFILE IO S/R)
2267      - comment out maskH definition (replaced by maskInC)
2268    o pkg/monitor:
2269      - change mon_printstats_rl.F & mon_stats_rl.F (were similar to mon_writestats_rl
2270        & mon_calc_stats_rl) to be the RL equivalent of mon_printstats_rs & mon_stats_rs.
2271    
2272    checkpoint62a (2010/01/15)
2273    o model/src:
2274      - bottom pressure diagnostic: correct for r* (when nonlinFreeSurf >= 4)
2275    o pkg/diagnostics:
2276      - add optional level number diagnostics (i.e., level number to be define
2277        explictly with S/R DIAGNOSTICS_SETKLEV) with parser-code(10)="X".
2278      - strictly check for valid parser-code(10) ;
2279      - check if adding diag to the list from the right place.
2280    o pkg/longstep:
2281      - change parameters and fix tracer conservation with rstar/nonlinear free surface
2282    o diagnostics:
2283     - in all pkgs, replace remaining calls to old S/R DIAGNOSTICS_ADD2LIST with newer
2284       S/R DIAGNOSTICS_ADDTOLIST ; fix seaice VICE diagnostics.
2285    o pkg/diagnostics:
2286     - Add option for writing vertical integral (sum of selected levels) of an output
2287        field instead of writing output field levels. Activate this option on a per
2288        output-file basis, by setting the 2nd character of fileflag to 'I'.
2289     - Add field-specific information relative to level integral in 3rd postion
2290        of parser diagnostics code (gdiag): " "=cumulate levels, "R"=integrate
2291        vertically (x level-thickness x hFac), "r"=same but without hFac.
2292    o do_the_model_io:
2293      - pass end-of-model-run flag as argument, from forward_step to diagnostics_write:
2294        in case useSIGREG, will write (averaged) diagnostics (if dumpAtLast) before
2295        writing pickups and stopping.
2296    o pkg/diagnostics (for now, only with mdsio):
2297      - write time information to meta file (and modify accordingly rdmds.m) :
2298        time-averaged diagnostics output: write starting and ending time of the
2299        time-averaging interval ; snap-shot diagnostics output remains unchanged;
2300    o pkg/timeave:
2301      - S/R TIMEAVE_NORMALIZ: change size of cumulated-time array (was previously
2302        always Nr), now assumed to be equal to number of levels of averaged field;
2303        only used for DIC_COST monthly mean arrays: this fixes dic_aver_final.F
2304    o pkg/sbo:
2305      - fix ocean bottom pressure global-average & 2-D time-ave output (was
2306        neither initialised nor filled).
2307      - add starting iteration in suffix of global-average output file
2308        (to avoid over-writing the file after a restart)
2309      - use standard MDSIO pkg S/R instead of SBO_WRITEVECTOR (fix byte-swap Pb).
2310    o time-average:
2311      - use simple cumulative-time array (no k index) in all pkgs: {PKG}_timeAve(bi,bj)
2312        (pkgs: aim_v23, bulk_force, dic, gmredi, kpp, land, ocn_compon_interf,
2313         ggl90, my82, opps, pp81, ptracers, sbo, seaice, shelfice, thsice)
2314        this fix DIC_COST cumulative-time array (previously: bi,bj,k)
2315      - fix 1rst call (nIter0) snap-shot output and accumulation (pkg/shelfice)
2316      - fix missing accumulation for pkg/opps.
2317      - cumulate fields only if doing time-ave output ({PKG}_taveFreq > 0)
2318         (pkgs: ptracers, kpp, ocn_compon_interf, ggl90, my82, pp81);
2319      - fix initialisation of time-ave vars and do only full time-step increment
2320        (i.e.: no first & last "half time-step") (pkgs: ggl90, my82, opps, pp81);
2321    o pkg/layers:
2322      - use standard RW pkg S/R to write the output
2323        and remove local write_fld version (which had a problem).
2324      - use simple cumulative-time array (no level index) to fix time-ave S/R calls.
2325      - fix LAYERS_CALC argument list.
2326    o pkg/timeave:
2327      - store cumulative-time in a simple tiled array (drop the level index)
2328      - add new S/R (TIMEAVE_NORMALIZE) which uses simple cumulative-time array.
2329    o pkg/ocn,aim_compon_interf
2330      - changes for multi-threaded coupled run. (tested with ifort-11 on danton)
2331    
2332    checkpoint62  (2009/12/23)
2333    o switch on useOBCSbalance in tutorial_plume_on_slope exp. and update output.
2334        (was not previously tested in any other exp.)
2335    o pkg/monitor:
2336      - clean-up _RL/_RS version: add specific S/R for statistics with mask & volume:
2337        mon_writestats_rl/s,F mon_calc_stats_rl/s.F ; will keep the old one
2338        (mon_printstats_rl/s,F mon_stats_rl/s.F) just for bare statistics.
2339      - use hFac & 2-D mask (instead of 3-D mask + hFac in previous mon_stats_rl.F).
2340      - change del2 calculation.
2341      - use interior masks (instead of maskH, <- to be remove).
2342      - shorter monitor suffix for forcing stats ("forcing" instead of "extforcing").
2343    o mask & obcs:
2344      - define 2-D "interior" masks (i.e., zero beyond OB) at 3 locations (C, W & S).
2345      - move global area computation from ini_masks_etc.F to ini_linear_phisurf.F
2346        (called after packages_init_fixed)
2347    o pkg/obcs:
2348      - move bi,bj loops into obcs_calc, so obcs_prescribe_read is called only once.
2349        Fixes bug in obcs+exf with nSx*nSy.GT.1
2350      - fix multi-tile handling in obcs balance code
2351    o nonHydrostatic:
2352      - Implement AB-3 for non-hydrostatic vertical momentum ;
2353        (change ordering of var. stored in pickup file when using NH)
2354      - move NH code from solve_for_pressure.F to 2 new S/R: PRE_CG3D & POST_CG3D.
2355      - add 2-D field to store Hydrostatic Surface Pressure adjusment from cg3d_x
2356        (in prep. for new NH free surface form).
2357    o pkg/obcs:
2358      add files & OB-variables for wVel (Non-Hydrostatic) with useOBCSprescribe
2359    o model/src:
2360      fix 2-D solver initialisation for deep-atmosphere (p-coord) with topography
2361    
2362    checkpoint61z (2009/12/01)
2363    o nonHydrostatic:
2364      Fix missing vertical flux of vert. momentum near surface (k=1). This fixes
2365        a spurious source of energy in simple baroclinic adjusment test case.
2366      Update all non-hydrostatic exp output.
2367    o model/src (3-d solver):
2368      Change again 3-D solver free-surface RHS term when exactConserv=T:
2369        simpler, consistent with exactConserv, and works with implicDiv2Dflow < 1
2370        (which was not the case with previous formulation).
2371      To recover previous version, just reset "oldFreeSurfTerm" to previous value.
2372      Affects results of exp. global_ocean.cs32x15.viscA4 & hs94.cs-32x32x5.impIGW.
2373    o nonHydrostatic:
2374      - compatible with implicDiv2Dflow < 1 ; + implement implicit factor
2375        for Non-Hydrostatic pressure gradient (similar to implicSurfPress).
2376      - change 3-D solver to work with r* (for now, only with linear free-surf.)
2377      - add few debug diagnostics (cg3d_x, residual)
2378    o model/src:
2379      fix missing EmPmR in 3-D solver RHS (was in cg2d_b but missing in cg3d_b).
2380        update output of exp. global_ocean.cs32x15.viscA4
2381    o update output of exp. global_ocean.cs32x15.icedyn after removing
2382      #define SEAICE_OLD_AND_BAD_DISCRETIZATION from SEAICE_OPTIONS.h
2383    o add entry points for Gianmaria's Nesting pkgs (from Contrib/nesting_sannino)
2384    o mnc: add horizontal grid coordinates (XC,YC) and (XG,YG) to netcdf output
2385      for complex grids, for now only to "state", "adstate", "adexf", "adseaice"
2386    o model: add Christopher Wolfe's implemetation of the single reduction cg2d
2387      (d'Azevedo, Eijkhout, and Romine, 1999) with CPP-flag ALLOW_SRCG and
2388      runtime flag useSRCGSolver. Modify verification experiment global_with_exf
2389      to test this code
2390    o pkg/cd_code:
2391      Change defaut D-grid time-stepping to get the same for D-grid momentum as for
2392       C-grid momentum. D-grid velocity used to be stepped forward in time with
2393       Adams-Bashforth only on surface pressure term. Tests show that using AB on
2394       D-grid coriolis term improves stability (as expected from CD-scheme paper).
2395      To reproduce old results, add 2 options (in CD_CODE_OPTIONS.h).
2396      Update results of exp: global_with_exf (x2), ideal_2D_oce, isomip (x2),
2397       lab_sea (3 Fwd +3 AD), natl_box (x2), tutorial_global_oce_biogeo (Fwd+AD),
2398       tutorial_global_oce_latlon, tutorial_global_oce_optim & tutorial_tracer_adjsens.
2399      Keep old results by adding CD_CODE_OPTIONS.h in exp: cfc_example, exp2,
2400           global_ocean.90x40x15(+AD), global_ocean_ebm(+AD) and OpenAD.
2401    o pkg/obcs:
2402     - fix bug in initialisation (broken since Oct 1rst modification)
2403       for useOBCSprescribe without useEXF.
2404    
2405    checkpoint61y (2009/11/15)
2406    o pkg/seaice
2407     - change (once again) the discretization for the evp solver: rather than
2408       squaring the averages of strain rates, average the squares to give
2409       a better approximation to VP behavior (in simple test); this breaks
2410       verification experiments that use EVP (lab_sea and lab_sea.hb87)
2411        --> update outputs
2412    o add CPP-flag (in mom_calc_visc.F) and TAF directive (in gmredi_slope_limit)
2413      to improve vectorization of adjoint code on TARGET_NEC_SX
2414    o verification/vermix:
2415      - change vermix to a more "classical" 1d column with high vertical
2416        resolution, seasonal heat flux forcing and constant wind forcing
2417        --> update outputs
2418    o pkg/seaice
2419     - fix diagnostics of principal stress components for EVP
2420     - add optional diagnostics of non-linear convergence for LSOR solver
2421     - make maximum zeta a runtime parameter
2422    o model/src (3-d solver):
2423      Undo modif from Dec 12, 2005 (solve_for_pressure.F cvs version v.49),
2424       which consisted in removing the Surf. Non-Hydrostatic pressure from the
2425       whole column and adding it to Eta (inspired from Casualli, 1999):
2426       Only affects 3-D solver initial guess and only if using ExactConserv,
2427       but tests did show a degradation of solver convergence. For this reason,
2428       decide to disable this piece of code.
2429       to recover previous version, just set zeroPsNH = exactConserv (line 78).
2430      Update output of exp. global_ocean.cs32x15.viscA4 & hs94.cs-32x32x5.impIGW
2431    o pkg/ggl90:
2432     - fix previous modif (unfortunatly has not been documented here).
2433    o pkg/seaice/autodiff:
2434     - add CPP flag to include clipping of zeta in EVP code;
2435       although clipping of zeta is not necessary for EVP and not recommended
2436       it was done by default, now clipping is disabled by default
2437     - modify computation and store zetaC/Z in seaice_evp for TAF
2438     - add CPP-flag SEAICE_ALLOW_CLIPVELS (undefined by default)
2439     - change seaice_calc_viscosities/strainrates for better
2440       vectorization after AD by TAF
2441     - rearrange common blocks in SEAICE.h once again for easier dumps of
2442       adjoint output, adjust adcommon.h and g_common.h
2443     - change flux form of default advection scheme for better vectorization
2444       of adjoint code
2445     - modify lab_sea/input.lsr to test the flux form of default advection
2446       scheme
2447    o autodiff: fix seaice fields in g_common.h (left over from 3 to 1 level
2448      transition in checkpoint61r)
2449    
2450    checkpoint61x (2009/10/19)
2451    o adjoint: adding two new verification experiments
2452      * tutorial_global_biogeo: an online dic sensitivity experiment
2453        (work with G. Forget)
2454      * tutorial_dic_adjoffline: an offline dic sensitivity experiment
2455        (an update of the Dutkiewicz et al., 2006 paper)
2456      Both use the same CO2FLUX cost function, but different controls
2457      Gradient checks look good, but some recomp. could still be traightened out
2458      Should add xx_dic control variable to test at some point
2459    o model/src:
2460      add run-time parameters to check and/or mask initial Temp & Salt
2461    o pkg/ptracers:
2462      apply zonal filter (if used) to all passive tracers
2463    
2464    checkpoint61w (2009/10/12)
2465    o adjoint:
2466      * update and finish work on adjoint of dic package (G. Forget)
2467      * start adjoint of offline package
2468      * bug fix for cube-sphere TLM code (active_file_g.F)
2469    o tutorial_global_oce_optim:
2470      now tested with 4 tiles (change data.grdchk and update output_adm.txt)
2471      and add SIZE.h_mpi for MPI testing
2472    o pkg autodiff
2473     - fix bug in autodiff_restore
2474     - make genmake2 remove comments and empty lines from ad_input_code.f in
2475       order to reduce file size (new script file remove_comments_sed)
2476    o allows to specify vertical profile of vertical viscosity (viscArNr)
2477    o pkg autodiff
2478      autodiff_ini_model_io: comment out writing of grid information to netcdf
2479      files, because at this time the grid fields are a bunch of zeros
2480      (this is analogous to ini_mnc_vars.F)
2481    o pkg seaice/autodiff:
2482     left-over from removing the 3-time-level fields:
2483     - small rearrangement of common blocks (SEAICE.h)
2484     - fix field declaration in order to get meaningful output in
2485       adseaice.*.nc (adcommon.h)
2486    o pkg obcs:
2487     - go through NH code only if nonHydrostatic=T
2488     - fix restart for Orlanski (Hydrostatic; still to fix NH+Orlanski restart)
2489     - move call to OBCS_CALC before SEAICE_MODEL which needs seaice-obc fields
2490       => Update output of experiment seaice_obcs
2491     - useOBCSbalance: code is wrong with multi-tile / proc: add a stop.
2492     - fix NH+Orlanski restart (add wvel OBC value in pickup file)
2493     - fix restart for useOBCSprescribe + useEXF
2494    o pkg ctrl
2495     - make obcs as control parameter work also with useSingleCPUio
2496     - replace a few sny and snx by Ny and Nx to be consistent with
2497       ctrl_set_globfld_x/yz.F
2498    o pkg seaice
2499     - re-introduce global field frWtrAtm for the case of
2500       ALLOW_MEAN_SFLUX_COST_CONTRIBUTION defined (SEAICE.h, seaice_growth.F)
2501     - catch the case of an empty filename in seaice_cost_init_fixed.F
2502    o pkg ecco:
2503     - small bug fixes in the_main_loop
2504      . fix order of monitor arguments
2505      . change SEAICE_MULTILEVEL to SEAICE_MULTICATEGORY
2506      . move include DYNVARS.h up outside the ALLOW_AUTODIFF_TAMC block so
2507        that ALLOW_ECCO_FORWARD_RUN works with NONLIN_FRSURF
2508     - replace cos(yc*deg2rad) by _rA in cost_mean_heat/saltflux.F, fix the
2509       imbalance diagnostics for wmean_h/sflux = 0
2510     - add actual values to f_obcsn/s/w/e in ecco_cost_final.F
2511     - catch the case of empty filenames in ecco_cost_init_fixed.F
2512       and ecco_readparms.F
2513     - fix the logic of wsalt=0.and.wsalt2=0 to wsalt=0.or.wsalt2=0 (and theta)
2514       to make this statement meaningfull in ecco_cost_weights.F
2515    o pkg zonal_filt:
2516      - change ZONAL_FILTER S/R interface (allows to filter 2-D fields)
2517      - when using rStar, filter uVel*hFacW instead of uVel
2518       (tested without topography: fix a Pb of growing instability with NLFS)
2519    o pkg/aim/thsice:
2520     -Add capacity to read a Q-Flux to be applied in slab-mixed layer thsice_slab_ocean.F
2521      (works as SST restoring)
2522    o pkg/thsice:
2523     -add specific parameter for salt restoring in slab mixed-layer
2524       (by default equal to the temperature restoring)
2525    
2526    checkpoint61v (2009/09/21)
2527    o pkg/kpp:
2528     -add double diffusive contributions as a hack, turned off by default
2529      for now, and the code can be excluded with a CPP-flag
2530      EXCLUDE_KPP_DOUBLEDIFF just as EXCLUDE_KPP_SHEAR_MIX
2531     -add a verification experiments to "vermix" to test this code
2532    o pkg/mom_common:
2533      Move computation of length scales to mom_init_fixed.F (avoid recomputation
2534      at each time-steps*levels).
2535    o pkg/layers:
2536      Created a new package for computing volume fluxes in temperature or
2537      [not yet implemented] density layers, e.g. for calculating residual
2538      overturning circulations.
2539    o pkg/diagnostics:
2540      implement a RS type version for the set of DIAGNOSTICS-FILL subroutines
2541    o fix few RS/RL type mismatch (check with ifort 11.1 "-warn all" option)
2542    o pkg/mdsio (& pkg/rw): rework high level S/R interface:
2543      To avoid mixing type (RS/RL) of input/output array argument,
2544      replace single mixed-type array with a pair from each type (RS/RL).
2545    o setting pickupSuff force to start from a pickup (even if nIter0=0): this
2546      is now implemented for all pkgs (previously only done for the main pickup)
2547    
2548    checkpoint61u (2009/08/25)
2549    o pkg/obcs:
2550      - change OB?eta from _RS to _RL and put them into a separate commen block
2551      - add code to read OB?eta from a file via obcs_prescribe_read: the code
2552        compiles and does not destroy any other experiments, the data is read
2553        properly, but the code is not tested in actual applications
2554    o ini_mnc_vars.F: if available (ALLOW_CAL), use startTime_1 and 2 to
2555      create a meaningful unit attribute for the time coordinate variable
2556    o pkg/ebm: add plenty of missing "_d 0" ;
2557       update results of experiment global_ocean_ebm (fwd + adjoint tests)
2558      Notes: several pieces of code only works for (very) specific set up
2559       (domain size, lat range, etc ...); should be documented & stop if one
2560       of those assumptions is not meet.
2561    o pkg/seaice: add missing "_d 0" in HSNOW initialisation
2562       update results of experiments: lab_sea (3 fwd tests + 2 adjoint tests)
2563          and offline_exf_seaice (seaicetd + adjoint).
2564    o add missing "_d 0" in ShortWave flux penetration (S/R SWFRAC):
2565       update results of experiments: lab_sea (4 fwd tests + 3 adjoint),
2566        seaice_obcs, global_ocean.cs32x15 (icedyn & thsice) and natl_box (x2).
2567    o few changes to pass when compiling with strick checking of arguments
2568       across S/R (allow to find few bugs in S/R calls).
2569    o pkg/seaice:
2570     - seaice_evp: move if-statement out of loop (TEM) at the cost of 11 new
2571       2d-fields, for slightly better performance
2572    
2573    checkpoint61t (2009/07/22)
2574    o pkg/seaice:
2575     - remove unused variables in seaice_evp
2576     - reduce number of SQRT in seaice_evp and seaice_calc_viscosities
2577    o eeset_parms.F, open_copy_data_file.F & ini_parms.F:
2578       named file replacing SCRATCH files (for TARGET_BGL & TARGET_CRAYXT):
2579       each processor opens a different file (a fix from Matt).
2580    o cg2d:
2581       use simple EXCH (overlap size = 1 and ignore corners), like in cg3d.F :
2582       this reduces number of EXCH calls by 2 when using exch2.
2583       For now, keep previous size array for gc2d_nsa.F to avoid Pb with store
2584       directives and missing simple EXCH (exch_s3d_rx) adjoint code.
2585    o pkg/thsice:
2586       add code for Near Infra-Red albedo (from Jeff)
2587       (turned on with run-time flag: thSIce_calc_albNIR, in data.ice).
2588    o ini_model_io:
2589       move (from packages_readparms.F & initialise_fixed.F) to ini_model_io.F
2590       MNC & MONITOR initialisation calls; move MNC calls from {pkg}_readparms.F
2591       to {pkg}_init_fixed.F for {pkg}= kpp, seaice & shelfice.
2592    
2593    checkpoint61s (2009/06/30)
2594    o pkg/exch2 (exch2_rxN_cube*):
2595       remove last BARRIER (no need to synchronise after getting data from shared
2596       buffer (get) as long as any change to buffer (put,recv) is between BARRIER)
2597    o change tiling of natl_box (from 2 to 4 tiles) to get it tested with MPI+MTH
2598      and generate new output (for the 2 tests) using default rotationPeriod.
2599    o pkg/exch2:
2600      - always call exch2_*_cube, not exch-1 anymore, if useCubedSphereExchange=F
2601        (was already the case with AUTODIFF_EXCH2 defined)
2602      - add bj in exch2 arrays and S/R.
2603      - can now use pkg/exch2 for regular (non CS) set-up; switch test experiment
2604        MLAdjust to exch2 (identical results except with MPI -> truncation diff);
2605    o add pkg/longstep for ptracer timestep a multiple of U/V/T/S timestep
2606      - adds deltaT argument to the subroutines TIMESTEP_TRACER DWNSLP_APPLY
2607        GAD_ADVECTION GAD_CALC_RHS GAD_IMPLICIT_R GAD_SOM_ADVECT
2608      - verification experiment natl_box.longstep
2609    o build_options: ifort+mpi_aces optfile (following Constantinos advise):
2610      allow different versions of ifort (8 or 9) and different versions
2611       of mpi (mpich or mpich2) to be used with the same optfile.
2612      requires to load a netcdf module and set MPI_INC_DIR (see comments inside
2613       optfile). Change testing scripts (example_scripts/ACESgrid) accordingly.
2614    o pkg/seaice:
2615      fix previous modif (3-level field removed) for old-pickup reading
2616    
2617    checkpoint61r (2009/06/25)
2618    o pkg/seaice:
2619     - clean up the 3-time levels of UICE,VICE,HEFF,AREA in three steps:
2620      1. introduce fields for time step (N-1)
2621      2. do not use levels 2 and 3 anymore (but keep them)
2622      3. replace 3D versions of UICE,VICE,HEFF,AREA by 2D versions. This
2623         includes changes to pkg/thsice/thsice_get_velocity.F,
2624         model/src/external_forcing_surf.F, pkg/obcs/obcs_apply_seaice.F, and
2625         pkg/obcs/obcs_apply_uvice.F.
2626     - completely remove code for leap-frog time stepping for second order
2627       advection
2628     - adjusted adjoint accordingly;
2629       gradient checks have improved by an order of magnitude!
2630    
2631    checkpoint61q (2009/06/22)
2632    o pkg/seaice: fix bug in free slip boundary conditons for LSOR solver
2633     - the boundary conditions along open boundaries are unclear, because the
2634       associated masks are set to zero and are thus treated as closed when
2635       applying the slip-boundary conditions.
2636     - move initialisation of grid variables from seaice_init_varia to _fixed
2637    o adding doc/diags_changes.txt
2638    o model/src:
2639      do_the_model_io: rename few pkg S/R which are called from do_the_model_io,
2640       to avoid "_diags" naming if no relation to pkg/diagnostics.
2641      ini_theta,ini_salt: fix (at least compile the code) reading from NetCDF
2642       file and only call PLOT_FIELD_XYZ if debugMode=T.
2643      remove few PLOT_FIELD_XY calls outside initialisation.
2644      remove few unnecessary BARRIER.
2645    o pkg/salt_plume: add SaltPlumeSouthernOcean to allow disabling
2646      of salt_plume package in Southern Ocean
2647    o pkg/thsice:
2648     - fix hOceMxL in overlap (needed for sea-ice advection);
2649       update output of experiment global_ocean.cs32x15.icedyn.
2650    o pkg/seaice:
2651     - make the (placeholder-)tracer IceAge a little more meaningful
2652      by avoiding ridging of age due to convergent ice flow
2653     - add diagnostics for surface temperature, atmospheric and oceanic
2654       heat flux, and atmospheric and oceanic ice growth
2655    
2656    checkpoint61p (2009/06/10)
2657    o eesupp (global_max & global_sum):
2658     - add one more element to buffer (start at index 0) for GL_MAX/SUM output;
2659     - remove starting & endding barrier (no longer needed)
2660    o pkg/mdsio, writelocal:
2661       works also in multi-threaded when LOCBIN_IO_THREAD_SAFE is undefined
2662       (remove the STOP): uses shared buffer IO to store data from all threads
2663       and then let master-thread write nThreads tiles.
2664    o pkg/mdsio (read/write field):
2665     - tiled IO done in 1 piece (all levels at a time);
2666     - new header file "MDSIO_BUFF_3D.h" with 3-D buffers.
2667     - multi-threaded: allow to read/write local (non-shared) array
2668       (was already working with singleCpuIO ; now works also without);
2669       => no longer needs barrier call after reading a file (added inside
2670       mds_read/write field).
2671     - move barrier calls outside gather/scatter_2d to mds_read/write_field
2672    o pkg/obcs/exf
2673      - exf_getffieldrec.F: add a few ". _d 0" and
2674                            add code to catch the case fldperiod = 0.  
2675      - obcs_precribe_read.F: change if statements so that they match
2676                              the variable type (_RL)
2677      - add a separate exf_iprec_obcs to exf_set_obcs (by default equal to
2678        exf_iprec) as part of namelist EXF_NML_01
2679    o pkg/mdsio:
2680      - read/write tiled (local) files: read/write 1-level tile chunk at a time
2681        (instead of segment of length sNx); expected to speed up tiled IO.
2682    o pkg/exch2:
2683      - take buffer copy from/to array out of S/R exch2_send/recv into new
2684        S/R exch2_put/get ; Exch of local variable now works with MPI+MTH
2685        (tested by removing commom block statement in SOLVE_FOR_PRESSURE.h).
2686      - ad version of send/recv no longer needed (but needs exch2_ad_put/ad_get)
2687      - simplify argument list of S/R exch2_get_uv_bounds and exch2_get_scal_bounds
2688        (which replaces exch2_get_recv_bounds & exch2_get_send_bounds) by
2689        including Topology header file (and common blocks).
2690      - implement EXCH_IGNORE_CORNERS in scalar exchange (rx1);
2691        remove 2nd exch call in exch2_s3d_rx (no longer needed).
2692      - document S/R arg. list (+ update some comments)
2693    o pkg/seaice:
2694      - added SEAICE_CLIM_AIR code, which permits modulation of surface air
2695        temperature and humidity over sea ice based on climatological values.
2696      - clean up computation of Hibler+Bryan (1987) stress coupling for the case
2697        of LSR (this change is expected to change the results slightly because now
2698        it uses slightly difference moduli from the second last LSR solution, but
2699        that is more consistent with the stress computations; this part of the code
2700        is not tested in the verification experiments)
2701      - fix diagnostics for flux of ice in case of B-grid
2702      - turn strain rates eij and press into global fields within global
2703        common block in SEAICE.h for more straighforward diagnostics
2704      - fix diagnostics for principal stress components, press, zeta, eta
2705        to give something meaning full
2706    o change tiling of global_ocean.cs32x15 (12 tiles, 32x16) and generate
2707      new output (all 4 tests) using default rotationPeriod.
2708    o pkg KPP:
2709      - add flag (LimitHblStable) to avoid limiting BL depth under stable conditions
2710      - fix vertical indices in RI_IWMIX (match between KPP grid from 0 to Nr+1
2711        and normal grid from 1 to Nr)
2712    o Fix computations of L4rdt in mom_calc_visc.F
2713    o eesupp:
2714      new S/R ALL_PROC_DIE (like EEDIE, without irrelevant threads err msg):
2715      should be called before a "stop" if we know that all process are going
2716      to stop; if one Proc does call this S/R, will hang in MPI_FINALISE.
2717    
2718    checkpoint61o (2009/05/26)
2719    o pkg/exch2: change check_depths to issue just a warning (instead of error+stop)
2720    o model/src/ini_curvilinear_grid.F:
2721       compute angleSin/CosC when they are not read from a file
2722    o pkg/seaice:
2723       add pseudo time stepping for LSOR
2724    o pkg/exch2:
2725       temporary fix for exch2_s3d_rx; update results of exp. hs94.cs-32x32x5.impIGW
2726    o pkg/seaice:
2727       Adding separate sea ice albedo, drag coefficients, and HO in Southern
2728       Ocean from those in Arctic Ocean.  See *_south in SEAICE_PARAMS.h
2729    o SingleCpuIO:
2730       fix bug put before chkp61n (May 11), when more than 2 MPI cpu are used.
2731    o pkg/seaice:
2732       put exchanged variable in (local) common block for MPI+Multi-Threads
2733       to work (necessary with exch1, and for now with exch2 too).
2734    o verification: to get more experiments tested with mpi, mth and mpi+mth,
2735      change tiling of:
2736       aim.5l_Equatorial_Channel, aim.5l_LatLon, dome, exp4, global_ocean.90x40x15,
2737       hs94.cs-32x32x5, MLAdjust, offline_exf_seaice & tutorial_plume_on_slope
2738      update output of exp:
2739       exp4, global_ocean.90x40x15(+.dwslp), MLAdjust(all 5),
2740       tutorial_plume_on_slope and hs94.cs-32x32x5 (use default rotationPeriod)
2741      + ideal_2D_ocean: use default rotation period + test Global_Sum_SINGLECPU
2742                       (note: output.txt generated on faulks using only 1 tile)
2743    o eesupp & mdsio (SingleCpuIO):
2744     - remove MISSING_TILE_IO (from MDSIO_OPTIONS.h), replaced by run-time
2745       parameter "W2_useE2ioLayOut" (read from file "data.exch2").
2746       Note: was not effective for globalFile & useSingleCpuIO=F; now fixed.
2747     - move MDSIO_SCPU.h (pkg/mdsio) to EEBUFF_SCPU.h (eesupp/inc).
2748     - fix GLOBAL_SUM_SINGLECPU when using Exch2; re-use same buffers and same
2749       gather/scatter S/R as with SingleCpuIO (=> 1 less 2D global RL array).
2750    o pkg/exch2:
2751     - new code to set-up W2-Exch2 topology (replace matlab-topology-generator):
2752       read parameter file "data.exch2" if it exists; otherwise try default regular
2753       cube without blank-tile; new header file "W2_EXCH2_SIZE.h";
2754     - update matlab-topology-generator (exch2_setup_cs6_print.m) to be compatible
2755       with new code (not to be used, just as a backup solution).
2756     - add examples (e.g., for lat-lon-cap_120) of parameter file "data.exch2"
2757       in utils/exch2/input.
2758    
2759    checkpoint61n (2009/05/12)
2760    o eesupp & mdsio (SingleCpuIO):
2761      - move mapping to global io-buffer inside gather_2d/scater_2d: this save
2762        memory (1 less 2D global RL array); skip 1 buffer copy; and only send/
2763        receive real*4 array (instead of real*8) to read/write 32.bit files.
2764        (new template for gather_2d/scater_2d, new set of S/R MDS_PASS_R4,8toRL,S
2765         and remove new mapping S/R)
2766    o pkg/mdsio: in preparation for topology-generator within pkg/exch2:
2767      - Change declaration of SingleCpuIO buffer, reduced to only 1 dim.:
2768        xyBuffer_size, which is set to W2_ioBufferSize from W2_EXCH2_PARAMS.h
2769        when using exch2. Add S/R to map global io-buffer to global model array.
2770      - uses exch2_global_Nx,y instead of exch2_domain_nxt,nyt.
2771    
2772    checkpoint61m (2009/04/29)
2773    o write_utils : change WRITE_1D_R8 to WRITE_1D_RL
2774      and add 3 other S/R for other types (R4,R8,RS).
2775      Change calls to WRITE_0D/1D_R[4,8,S,L] to match the type of argument.
2776    o eesupp/inc/CPP_EEMACROS.h (EXCH & GLOBAL_SUM/MAX macros):
2777     - ensure suffix (_R4,_R8,_RS,_RL) correspondance between macro and S/R ;
2778     - reduce number of macro definitions (keep only those which are used);
2779       can always call directly the corrresponding S/R if needed.
2780     - everywhere in the code: change macros (EXCH & GLOBAL_SUM/MAX) suffix
2781       _R4/_R8 to _RS/_RL when applied to _RS/_RL variable.
2782     Fixed wrong type of arg in:
2783       atm2d/put_ocnvars.F cheapaml/cheapaml.F ocn_compon_interf/ocn_apply_import.F
2784       ctrl/ctrl_map_ini_ecco.F seaice/seaice_do_diags.F seaice/seaice_model.F
2785     To fix: global_sum of var in common block is wrong (multi-threaded) in:
2786       dic/dic_atmos.F ebm/ebm_area_t.F ebm/ebm_zonalmean.F sbo/sbo_calc.F
2787     To fix: aim_v23/aim_do_co2.F (BARRIER & GLOBAL_SUM within bi,bj loops)
2788    o adjustment.cs-32x32x1: test "blank tiles" when compiling with mpi; 2nd
2789      "nlfs" mpi test is going to stop when checking for unconnected tile egdes.
2790    o eesupp/src: new S/R to stop everyone when 1 (or more) Proc. find an error
2791    o pkg/exch2: new S/R EXCH2_CHECK_DEPTHS to check that unconnected tile
2792      edges are closed (zero depth); might happen with "blank tiles";
2793      for now, disabled if using OBCS.
2794    o tools/gemake2: delete modifs from March 27-29 2009 (with option "-mpi":
2795      link *_mpi files from "MODS" dir) to return to a strait-forward behavior.
2796    o move read_write.F to write_utils.F ; new parameter (maxLengthPrt1D)
2797      to reduce length of 1.D array print in STDOUT.
2798    o adjustment.cs-32x32x1: changed to oceanic test with 1 continent
2799      + use 48 tiles (16x8): this will allow to test "blank tiles".
2800    o start to test MPI + multi-threaded (change testreport to skip tests
2801      where number of tiles do not match).
2802    o genmake2: add option "-omp" to turn on Open-MP ;
2803      passed to testreport (if using -mth) ; merge few (*+mth) optfiles.
2804    o pkg/exch2 (+ utils/exch2): ignore blank tiles (instead of removing them)
2805      and keep the original tile numbering. Note: compatible with old
2806      W2_EXCH2_TOPOLOGY.h & w2_e2setup.F topology files.
2807    
2808    checkpoint61l (2009/04/07)
2809    o Overlaps had been forgotten in calculating ijk keys : fixed
2810    o fix cyrus makedepend for gcc 4.4
2811    o experiment fizhi-cs-aqualev20:
2812      switching to new version of S/R GETPWHERE (#define TRY_NEW_GETPWHERE)
2813      and generate new output. Note: new output is much closer to the old
2814      one (v1.8) generated with pgf77 -O2 on Mar 14 2007 than it is from
2815      the previous one (v1.9) generated with pgf77 -O0 on Jun 13 2007.
2816    o pkg/fizhi:
2817     - change to avoid indices going deliberately over array-bounds
2818     - remove unnecessary MPI stuff
2819     - perpetual spring equinox with "#define FIZHI_USE_FIXED_DAY"
2820     - new version of S/R GETPWHERE available with #define TRY_NEW_GETPWHERE:
2821       does not go over array-bounds and therefore returns reliable output.
2822     - in fizhi_driver.F & fizhi_turb.F, fix "get_alarm" calls:
2823       this S/R has 4 output arguments, which are used inside "get_alarm";
2824       when it is called with the same variable "ndum" in place of several
2825       output arguments, this produces weird side effect inside "get_alarm"
2826      (e.g., datein=dates(n) is overwritten by timein=times(n) since both
2827       datein & timein, resp. 2nd and 3rd arg., are pointed to the same "ndum"
2828       address) and produces error.
2829    o tools/gemake2: (March 27-29 2009)
2830      with option "-mpi": link *_mpi files from "MODS" dir (this is what
2831      testreport does).
2832    o lab_sea experiment: change from 2x1 tiles to 2x2 tiles and regenerate output
2833    o pkg/seaice: fix bug in new version of S/R SEAICE_LSR.F:
2834       update lab_sea.lsr & lab_sea.salt_plume results
2835    o pkg/seaice:
2836      Major overhaul of the LSOR solver: change discretization from original
2837      finite differences to finite volume. The old routine is still in the
2838      file seaice_lsr.F and can be turned on with the CPP-flag
2839      SEAICE_OLD_AND_BAD_DISCRETIZATION
2840      Along with this change, the discretization of the strain rates is changed.
2841      The same flag turns on the old discretization in seaice_calc_strainrates.F
2842      All verification experiments with seaice are affected (except for
2843      seaice_exf_offline); global_ocean.cs32x15/input.icedyn recovers the old
2844      results by setting the above flag.
2845      Further changes involve changes in defaults:
2846      - ALLOW_FLOODING is defined and turned on by default
2847      - SEAICEadvSnow = .true. is now the default
2848      - SEAICEadvSalt = .true. is now the default
2849      - SEAICEadvAge  = .true. is now the default
2850      - SEAICE_clipVelocities  = .false. is now the default
2851                                         (as per J. Zhang's recommendation)
2852      - B-grid, and thus not tested: SEAICE_TEST_ICE_STRESS_1/EXPLICIT_SSH_SLOPE
2853        is defined, SEAICE_TEST_ICE_STRESS_1 is renamed into SEAICE_BICE_STRESS
2854      - seaice_growth: replace computation of UG by a simple copy from wspeed
2855    
2856    checkpoint61k (2009/03/18)
2857    o pkg/seaice: a few bug fixes mostly concerning the metric terms:
2858      seaice_lsr: fixed a few metric terms,
2859                  affects lab_sea.lsr, lab_sea.salt_plume, seaice_obcs
2860                  add more debugging diagnostics
2861      seaice_evp: removed superfluous many metric terms of FV discretization
2862                  of stress divergence
2863                  affects lab_sea, lab_sea.hb87
2864      seaice_ocean_stress: removed superfluous many metric terms of FV discretization
2865                  of stress divergence for non-evp solver
2866                  (this part is not tested anywhere)
2867      seaice_calc_strainrates: fixed a bug in no-slip boundary conditions,
2868                  they were effectively only half slip
2869                  affects lab_sea.hb87
2870      updated all relevant verification experiments (except lab_sea//output_adm.txt
2871        which was left over, but fails at level 7 & 6)
2872    
2873    checkpoint61j (2009/03/17)
2874    o pkg/seaice: turn a few hard wired parameters into run time parameters
2875    o pkg/seaice/exf/monitor: turn netcdf coordinate variable T into model
2876      time in seconds as promised by the usints in seaice_monitor and exf_monitor
2877    o pkg/mnc: fix the coordinate variables for multi-tile curvi-linear grids
2878      that are not cubed-sphere grids
2879    o pkg/seaice: fix a bug for the rare case of SEAICE_VECTORIZE_LSR
2880    o pkg/ctrl:
2881      fix bug in ctrl_depth_ini.F (EXCH_XYZ was applied to 2-D field xx_r_low)
2882    o non-hydrostatic (calc_gw.F):
2883      fix viscA4 on CS-grid + fix diagnostics: Wm_Diss & Wm_Advec
2884      update output of exp. global_ocean.cs32x15.viscA4
2885    o remove backward compatibility for thetaMin,phiMin
2886      (replaced by xgOrigin,ygOrigin on Jan 27, 2009)
2887    o pkg/exf: fix a serious bug in exf_set_uv.F: do a rotation of the
2888      interpolated wind field not only for curvilineargrid=.true., but also
2889      for a rotated grid (rotateGrid=.true.)
2890    o pkg/exf: add capability to bypass interpolation for runoff
2891      by setting yet another CPP-flag
2892    o eesupp/src, B-grid exchange:
2893      add simple (6 tiles, non MPI) CS exch + standard interface S/R.
2894    o autodiff
2895      new CPP option ALLOW_TAMC_SINGLEPREC_COMLEV
2896      allows to switch to single-prec common blocks;
2897      corresponding switch occurs in tamc.h, integer isbyte
2898      TAF store directivs "byte" and "kind" seem equivalent;
2899      Most tamc.h have been updated correspondingly.
2900    
2901    checkpoint61i (2009/02/13)
2902    o autodiff:
2903      fix autodiff_sore/_restore indices for obcs
2904      (spotted by I. Hoteit, M. Mazloff)
2905    o pkg/autodiff, pkg/ctrl:
2906      Add flag to reduce all tapelev I/O to single-prec.
2907      In data.ctrl set
2908        doSinglePrecTapelev = .TRUE.
2909    o model/src/ini_curvilinear_grid.F, new grid-file format without EXCH2:
2910      check in hack for SX8 compiler (for dxV, dyU); remove it afterwards.
2911    o pkg/shelfice: fix bug with SHELFICEconserve flag, prepare for
2912      real fresh water flux (not yet)
2913    o pkg/mdsio & rw:
2914     - add argument & option to S/R MDS_WRITEVEC_LOC (avoid Open/Close & write-meta)
2915     - add simple interface S/R to MDS_WRITEVEC_LOC in pkg/rw: WRITE_GLVEC_RX.
2916    o pkg/flt:
2917     - replace FLT_INIT by 3-steps standard initialization S/R: readparms,
2918       init_fixed & ini_varia.
2919     - clean-up & simplify linear interpolation S/R:
2920       move flt_bilinear.F -> flt_interp_linear.F ; add arg. myThid.
2921     - fix some indices (mainly vertical index) ; add IMPLICIT NONE.
2922     - more efficient I/O, using new options of MDS_WRITEVEC_LOC S/R.
2923     - add vert. coordinate & horiz. indices to output files.
2924     - change vertical position in initial condition, from index to depth [m].
2925     - store horizontal (decimal) indices i,j in common block (instead of coord. x,y)
2926       (easier to get to a curvilinear grid) ; delX,delY no longer used.
2927    o pkg/ggl90: a few modifications:
2928     - fix bottom boundary condition, and interpolation of KappaE
2929       near top and bottom
2930     - use same set of viscosity/diffusivity for TKE/momnetum/tracer
2931     - add smoothing option as in Blanke and Delecluse (1993) (--> ALLOW_GGL90_SMOOTH)
2932     - add a few options for mixing-length upper limit (--> mxlMaxFlag)  
2933    o rename thetaMin,phiMin -> xgOrigin,ygOrigin
2934      (maintain temporary backward compatibility, until next checkpoint)
2935    
2936    checkpoint61h (2009/01/27)
2937    o pkg/diagnostics with "periodic averaging diagnostics":
2938      fix S/R DIAGNOSTICS_COUNT ; hack diagnostics_out.F to get NetCDF output.
2939    o pkg/my82: add missing "_d 0" ; update output of exp. vermix.my82
2940    o pkg/obcs: fix loop ranges for balancing code
2941    o pkg/flt:
2942     - improve criteria for finding which tile owns a float.
2943     - fix FLT_EXCH for case without MPI ; apply cyclic BC + fix also the MPI case.
2944    o Add well-mixed CO2 box in aim_v23 (which includes changes in pkg
2945      aim_compon_interf, ocn_compon_interf, gchem, and dic to get coupling
2946      with ocean biogeo)
2947    o pkg/flt:
2948     - do some cleaning and fix the restart ;
2949     - add output.txt in flt_example/results to get this pkg tested.
2950    o genmake2: add an EXTENDED_SRC option and flag.
2951       for now, cannot be turned on on command line (only through genmake_local)
2952    o pkg/mdsio: read/write vector:
2953     - singleCpuIO: fix RL/RS in MDSWRITEVECTOR by calling new S/R MDS_BUFFERtoRL/RS
2954     - singleCpuIO=F: fix arrType & filePrec & _BYTESWAPIO in both MDSREADVECTOR
2955       & MDSWRITEVECTOR by calling new S/R MDS_RD/WR_VEC_RL/RS.
2956     - affects gradient of test-exp "bottom_ctrl_5x5" (not due to _BYTESWAPIO)
2957      (drop to 4 digits matching for grad). But this test does not look very
2958      reliable (was already failling on eddy, fc5, at 6.digits). Update output.
2959    
2960    checkpoint61g (2008/12/29)
2961    o pkg/flt:
2962      - move FLT_CPPOPTIONS.h to FLT_OPTIONS.h (standard name)
2963       + make OPTIONS file more standard.
2964      - rename S/R MDSREADVECTOR_FLT to FLT_MDSREADVECTOR (to mach src file name)
2965      - fix _BYTESWAPIO CPP-Flag
2966      - standard reading of file-parameter "data.flt"
2967      - fix argument list of S/R FLT_RESTART
2968      still need to fix _BYTESWAPIO in pkg/mdsio/mdsio_writevector.F
2969    o pkg/obcs: fix a CPP-flag, bug reported by Jeff Blundell
2970    o gather_2d.F/scatter_2d.F: suppress vectorisation on NEC SX in respond to
2971      a still unfixed compiler/optimization bug
2972    
2973    checkpoint61f (2008/11/21)
2974    o pkg/seaice, LSR solver: fix bug in GLOBAL_MAX calls ;
2975      update results of global_ocean.cs32x15.icedyn test.
2976    o move getcon.F from model/src to pkg/fizhi.
2977    o pkg/exf: add parameter for extrapolation of temp up to the surface
2978       and option to prevent negative evap (in bulk_largeyeager04 only).
2979    o Prather Advection scheme: fix tracer conservation for divergent flow
2980      (e.g., when using NonLin Free-Surface).
2981    o kpp: retire KPPmld diagnostics --> use MXLDEPTH instead
2982    o gmredi (Visbeck-variable-K):
2983     - add more parameters to Visbeck-variable-K.
2984     - use a 5 points average for dSigmaR in Visbeck-K calculation
2985       (more "homogenous": same stencil and same weights as in dSigmaH)
2986     - update output of ideal_2D_oce experiment.
2987    o fix CPP-flag REAL4_IS_SLOW, when _RS expands into real*4
2988      (#undef REAL4_IS_SLOW)
2989     - pkg/mnc/mnc_cw_cvars.F: write _RS-grid variable as netcdf-real*4
2990       coordinate variable
2991     - pkg/monitor/monitor.F: call mon_printstats_rs for _RS variables
2992       (surface forcing fields), removes some of the functionality
2993     - model/src/write_grid.F: write _RS variables as RS-netcdf variables
2994     - model/src/diags_oceanic_surf_flux.F: fix a few diagnostics, but
2995       probably not all: copy _RS surface flux fields to RL field before
2996       calling DIAGNOSTICS_FILL
2997     - model/inc/CPP_EEMACROS.h: make the _EXCH_*_RS macros expand into
2998       real*4 (CALL EXCH_*_RS) versions.
2999     - tested in 2 experiments: inverted_barometer & solid-body.cs-32x32x1
3000       (generate new output).
3001    
3002    checkpoint61e (2008/10/23)
3003    o gmredi (Visbeck-variable-K):
3004      - fix the "OLD_VISBECK_CALC" option + move the #undef to GMREDI_OPTIONS.h
3005      - change computation of Visbeck-K where Slope > Smax :        
3006        now: N*min(Slope,Smax) (similar to OLD_VISBECK_CALC with gkw91 taperFct)
3007        previously was: M*sqrt(min(Slope,Smax)) ; update ideal_2D_oce output.
3008    o bottom-drag in P-coord.: change units of bottomDragLinear & bottomDragQuadratic
3009      to be the same as with Z-coord. (i.e., m/s & no-units respectively).
3010    o calc_viscosity: fix index range (was wrong for CD-Scheme & explicit Visc)
3011    o pkg gmredi, linear & fm07 tapering: put an upper limit on Slope^2 so that Kwz
3012      does not become too large (to avoid precision problems in implicit-diffusion
3013      solver); update ideal_2D_oce output.
3014    o pkg ggl90:
3015      - in ggl90_cal.F: compute only one set of visc/diff, used to
3016        step forward TKE/T/S/momentum
3017      - default value of GGL90viscMax/GGL90diffMax larger and equal (to
3018        have Prandlt =1)
3019    o gmredi (fm07):
3020      - add lower limit on Transition layer thickness + lower limit on 1/lambda
3021      - allow to set few more params from data.gmredi
3022    o pkg ggl90:
3023          - add missing sqrt(2) factor in computation of mixing length
3024            scale in ggl90_calc.F
3025            (see Eq. (2.35) in Blanke and Delecluse, JPO, 1993)
3026    
3027    checkpoint61d (2008/09/25)
3028    o adjoint modifs
3029      - adapt to new field rhoInSitu
3030      - allow to revert from StoreDynVars2D, StoreDynVars3D
3031        to individual fields
3032        (switches AUTODIFF_USE_OLDSTORE_2D, AUTODIFF_USE_OLDSTORE_3D)
3033    o store 3-D (in-situ) density in commom block (DYNVARS.h)
3034     - save 1 rho computation.
3035     - no longer modify T & S inland when using down_slope pkg.
3036    o gad_som : allow to switch to SOM advection for T & S without corresponding
3037      pickup files (using new S/R: MDS_CHECK4FILE).
3038    o keep removing _BEGIN/_END_MASTER between MDSIO S/R call
3039      (for useSingleCpuIO to work in multi-threaded)
3040    o pkg/shelfice:
3041     - disentangle parameters: retire shelfIceFile in data/PARM05 and substitute
3042       with SHELFICEtopoFile in data.shelfice
3043     - move code for reading ice shelf topography and modifying hFacC into separate
3044       subroutines of the shelfice package
3045     - separate initialisation of "fixed" and "variable" variables
3046     - kTopC is not (yet) replaced by kSurfC, although this is possible
3047    o fix broken diagnostic SIatmFW and changed the units from m/s to kg/m^2/s
3048    o add initialisation of deepFac if using Pcoords (new S/R set_grid_factors)
3049      and rename:
3050      ini_phiref.F          --> set_ref_state.F  (+ set anelastic factors)
3051      ini_reference_state.F --> load_ref_files.F (- set anelastic factors)
3052    o change FIND_RHO_SCALAR : return rho (instead of rho - rhoConst)
3053    
3054    checkpoint61c (2008/08/30)
3055    o add option ALLOW_ADDFLUID and run-time selector "selectAddFluid"
3056      to add mass source/sink of fluid in the interior (3-D generalisation
3057      of oceanic real-fresh water flux).
3058    o pkg/monitor: fix recip_dr argument in mon_advcflw2 call (-> advcfl_W_hf_max)
3059    o vermix test experiment: switch from LINEAR EOS to MDJWF (not tested before)
3060    o new pkg: down_slope
3061      density-driven downsloping flow parameterisation (Tellus, 1999, 412-430).
3062      - presently, modify T & S inland (dwnslp_calc_rho.F).
3063        can be avoided if rho was stored in common bloc and used in calc_phi_hyd.
3064      - implementation for ocean in P-coords not tested.
3065      - add secondary test to global_ocean.90x40x15 (input.dwnslp) to check this pkg.
3066    o move kSurfC,kSurfW & kSurfS from SURFACE.h to GRID.h (next to kLowC)
3067      (to facilitate conversion of oceanic pkg to p-coordinate).
3068    o change FIND_RHO to FIND_RHO_2D :
3069      pass arguments tFld & sFld as local (tile) 2D-arrays ; +fix EOS_CHECK.
3070    o new pkg: cheapaml
3071    
3072    checkpoint61b (2008/08/05)
3073    o exch2:
3074      change index bounds in rx2_cube exchanges (new S/R: EXCH2_GET_UV_BOUNDS)
3075      - no longer depend on the order sequence (N,S,E,W).
3076      - 3rd exchange no longer needed (tested with 24 tiles).
3077      - same modif to hand-written adjoint S/R (global_ocean.cs32x15: zero diff)
3078      - exch_UV_A-grid readily available (but not yet tested).
3079      comment out 3rd exch call and remove copy of V to U at SE & NE face-corners
3080      (both are no longer needed) in exch_uv: no effect in forward run; but
3081       get truncation error differences with adjoint exch.
3082    o exch2:
3083     - change index-bounds storage (moved from target to local tile,
3084       more intuitive this way) ; rename/remove some variables.
3085     - change utils/exch2/matlab-topology-generator & code_mods accordingly.
3086    
3087    checkpoint61a (2008/07/29)
3088    o exch2/matlab-topology-generator:
3089      fix bug in index bounds for N-S internal exchange (hard to tell if this
3090      had any effect on the solution).
3091    o pkg/mnc: small fix in mnc_handle_err: make sure that length of msgbuf
3092      is exceeded
3093    o testreport: modify syntax of awk, so that it works also with
3094      awk, and not only with nawk and gawk
3095    
3096    checkpoint61 (2008/06/24)
3097    o autodiff
3098      Change default for TAF usage by removing argument '-nonew_arg'
3099      This changes TAF subroutine argument list (ordering of active var.)
3100      Omission of this flag leads to incompatibility w.r.t. TAMC
3101      To restore TAMC-compatibility, need following modifs:
3102      * use adoptfile tools/adjoint_options/adjoint_tamc_compatibility
3103      * use CPP option #define AUTODIFF_TAMC_COMPATIBILITY
3104      Tested TAF version is 1.9.22
3105      N.B.: exch2 hand-written adjoint code currently not TAMC compatible
3106    
3107    checkpoint60 (2008/06/19)
3108    --->>> This is the last checkpoint for which generating the adjoint
3109    --->>> is done via the TAMC-compatibility TAF-flag "-nonewarg"
3110    --->>> by default.
3111    --->>> Future checkpoints will ommit this flag by default.
3112    o pkg/generic_advdiff, os7mp: simplify and avoid division by zero.
3113    o pkg/grdchk: Add gradient check to etan0 perturbations.
3114    o pkg/exf: read ice area from file (#ifdef ALLOW_ICE_AREAMASK).
3115    o pkg/autodiff: more flexibility in zeroadj.
3116      model/src: modifying do_oceanic_phys.F accordingly.
3117    o pkg/ctrl: Bounds for (kapgm,kapredi,eddypsi) parameter estimation.
3118    o model/src and pkg/gmredi: GMREDI_WITH_STABLE_ADJOINT CPP option
3119      special setup of gmredi for which the adjoint is stable
3120      enough for parameter optimization.
3121    o bridging the gap between eddy stress and GM.
3122      -> eddyTau is replaced with eddyPsi (eddyTau = f x rho0 x eddyPsi)
3123          along with a change in CPP option (now ALLOW_EDDYPSI).
3124      -> when using GM w/ GM_AdvForm:
3125          The total eddy streamfunction (Psi = eddyPsi + K x Slope)
3126          is applied either in the tracer Eq. or in momentum Eq.
3127          depending on data.gmredi (intro. GM_InMomAsStress).
3128      -> ALLOW_EDDYPSI_CONTROL for estimation purpose.
3129      The key modifications are in model/src/taueddy_external_forcing.F
3130      pkg/gmredi/gmredi_calc_*F pkg/gmredi/gmredi_*transport.F
3131    
3132    checkpoint59r (2008/05/29)
3133    o new S/R (pkg/mdsio/mdsio_facef_read.F) reading of sNx+1 x sNy+1 array
3134      from per-face file (take S/R READSYMTILE_RS out of ini_curvilinear_grid.F);
3135      fix option to read coriolis(@ cell-corner) from files with CS-grid.
3136    o pkg/mnc: add some attributes to standard 1D-coordinate variables
3137    o pkg/diagnostics: enforce missing_value attribute for scalar variables at
3138      mass points, when using mnc for output
3139      - add runtime parameter (missing_value, missing_value_int) to override
3140        default (which is the value of getcon('UNDEF'))
3141    o pkg/mnc: prepare mnc for the actual use of missing values with the
3142      diagnostics package: small fix in mnc_cw_readwrite.template and more
3143      initialisation of never used fields
3144      - replace mnc_common.h and mnc_id_header.h with corresponding upper case
3145      versions
3146    o pkg/thsice/thsice_ini_vars.F added default initial values so that
3147      thermodynamics sea ice solver does not blow up when some initial fields
3148      are missing.
3149    o move from external_forcing_surf.F to ini_forcing.F
3150      the p-coord. hack consisting in using pLoad to set phi0surf ;
3151      update output of tutorial_global_oce_in_p (affected @ truncation level).
3152    o Freshen up a bit hs94.1x64x5, notably:
3153      remove rotationPeriod and tRef=5*0. (adjoint only), and add
3154      exactConserv=.TRUE.
3155    o pkg/generic_advdiff:
3156      change option GAD_ALLOW_SOM_ADVECT to GAD_ALLOW_TS_SOM_ADV which only
3157      applies to files where Temperature & Salinity 2nd Order moments are used.
3158    o pkg/ptracers: add second-order moment advection schemes (80 and 81);
3159      this uses a dynamically allocated internal state data structure
3160      (#define PTRACERS_ALLOW_DYN_STATE in PTRACERS_OPTIONS.h)
3161      and requires a fortran 90 compiler
3162    
3163    checkpoint59q (2008/05/06)
3164    o pkg/mom_vecinv: Add energy & enstrophy conserving scheme (selectVortScheme=3)
3165       (from Sadourny, described by Burridge & Haseler, ECMWF Rep.4, 1977)
3166    o Refresh tutorial_global_oce_biogeo, notably:
3167      - change bathymetry (put back seamounts in ACC, use hFacs)
3168      - change EOS (POLY3 --> JMD95Z)
3169      - use Bryan-Lewis vertical diffusivity
3170      - use multidimensional advection
3171      - remove old virtual virtual in dic pkg, now done through ptracer pkg
3172      - change a couple of parameters in dic pkg
3173    o pkg/ctrl: change formula in adctrl_bound.F and add a parameter to ctrl_map_ini_gen.F
3174    o pkg/obcs: change default to OBCSfixTopo = .true.,
3175      - set OBCSfixTopo=.false. in exp4/input/data.obcs to reproduce old result
3176      - replace "debugMode" with "debugLevel .GE. debLevB"
3177    o implementation of TAF directives for gchem,cfc,dic
3178    o remove "exp5" (replaced by tutorial_deep_convection).
3179    o pkg/obcs: add code to fix topography gradients normal to open boundaries;
3180      this requires computing the index fields OB_Jn/Js/Ie/Iw in obcs_readparms;
3181      the code can be turned on by setting OBCSfixTopo = .true. in data.obcs
3182      --> changes results in exp4, seaice_obcs
3183    o tutorial_deep_convection :
3184      update the set-up and increase resolution and domain size ; start
3185      from pseudo initial conditions = output at t=120mn in order to see
3186      something happening when running testreport.
3187    o pkg/seaice: add os7mp as an advection scheme
3188                  add check for advection schemes
3189                  add a flag for restoring T and S underneath sea ice
3190    o pkg/my82: add netcdf-support and diagnostics
3191    o thsice pkg:
3192      - Now hsMax limits snow height by turning it into ice following
3193        flooding scheme (and now conserving energy)
3194      - Slight rewriting of the formula in thsice_calc_thick.F
3195      - Parameter rhowi eliminated to be replaced by floodFac = (rhosw-rhoi)/rhos
3196      --> changes results of global_ocean.cs32x15.icedyn and global_ocean.cs32x15.thsice
3197    
3198    checkpoint59p (2008/04/10)
3199    o gchem / dic / cfc :
3200      - add useDIC, useCFC , read from "data.gchem" (& hold in GCHEM.h);
3201      - add new parameter files: "data.dic" & "data.cfc" ;
3202      - various re-arrangement in initialisation & header file ;
3203      - fix tutorial_global_oce_biogeo for multi-threaded test.
3204    o pkg/dic: test for "pickup_dic" file when restarting ;
3205      if no pickup-file, can restart with a re-initialised pH (same as it did
3206      before) providing pickupStrictlyMatch is set to False.
3207    o change argument list of S/R PTRACERS_WRITE_PICKUP & MYPACKAGE_WRITE_PICKUP
3208      + fix call to S/R GGL90_WRITE_PICKUP & DIC_WRITE_PICKUP
3209    o add a "warning" (to Error msg file) when an Active Tracer is not using AB-2
3210      and staggerTimeStep is off (needed for stability of Internal-wave dynamics).
3211    o move out of PARAMS.h & data the last pieces of old-ptracer code: tauTr1ClimRelax,
3212     & lambdaTr1ClimRelax ; put those 2 params in PTRACERS_PARAMS.h & data.ptracers
3213       (note: not clear to me what lambdaTr1ClimRelax is still used for ...)
3214    o pkg/mom_vecinv: - new parameter "selectVortScheme" to select which
3215       scheme to use for vorticty-term ;
3216     - compute upwindVorticity=T case within mom_vi_u/v_coriolis_c4.F
3217       (with default selectVortScheme, return to original discretisation)
3218     - remove weird combination (e.g.: upwindVorticity & highOrderVorticity)
3219    o pkg/seaice: add a line to the summary to indicate grid type (B/C)
3220    o in mom_calc_visc, fix average value of viscAh_W & viscA4_W next to the
3221      bottom ; only used with variable horizontal viscosity and non-hydrostatic.
3222      also fix diagnostics VISCAHW & VISCA4W.
3223    
3224    checkpoint59o (2008/03/07)
3225    o dome/code/obcs_calc.F: avoid division by zero (detected using gfortran).
3226    o change the loop ordering in most gad_*_adv_x.F to improve vectorization:
3227      move a few statemens out the main loop into separate loops
3228    o pkg/shelfice:
3229      - sort out freshwater flux; convert freshwater fluxes to mass fluxes
3230        (kg/m^2/s), does not break tests, because in verification/isomip,
3231        rhoConstFresh=rhoConst (by accident)
3232      - rearrange computation of tLoc, sLoc, pLoc to make code more efficient
3233      - move S/R find_rho_scalar, pkg/ecco/sw_ptmp.F, pkg/ecco/sw_adtg.F into
3234        new file model/src/seawater.F, so that they are available for all pkgs.
3235      - convert potential temperature into in-situ temperature. This changes the
3236        isomip tests => update tests
3237    o add a flag writePickupAtEnd (default=true) to be able to suppress
3238      writing a pickup at the last timestep
3239    o tools/mpack-1.6 :
3240      - disable automake (not working) and autoconf (not needed).
3241      - update to version 1.6.4 which fix MD5 code on some 64 bits platforms
3242        also cleaner with much less compilation warnings.
3243    o pkg/profiles:
3244      rename profiles_interp_mean_genericgrid as profiles_interp_mean_gg
3245      (for "less than 32 characters name" compiler requirement)
3246    o pkg/obcs and pkg/exf: added capability to specify seaice open boundary
3247      conditions that have a different sampling frequency than S/T/U/V obcs
3248    o pkg/diagnostics (stats-diags):
3249      - fix global Min/Max in case 1 processor get only empty tiles
3250    o genmake2: replace (4 times)
3251         make genmake_tc_1.o >> genmake_warnings 2>&1
3252      with
3253         COMM="$CC $CFLAGS -c genmake_tc_1.c"
3254         echo $COMM >> genmake_warnings
3255         $COMM >> genmake_warnings 2>&1
3256      to make genmake2 always see the value of CC as specified in the optfile.
3257    o generic_advdiff: - prather advection scheme (SOM) coded for CS-grid.
3258      - add diagnostics for 1srt & 2nd Order moments and sub-grid variance.
3259      - modify verification advect_cs test to test SOM-advection on CS-grid.
3260    o pkg/ctrl:
3261      - Rewrite of ctrl_map_ini_ecco.F,
3262        introducing a generic routine (ctrl_map_ini_gen.F).
3263      - Modification of ctrl_bound/adctrl_bound handling control vector bounds.
3264    
3265    checkpoint59n (2008/02/09)
3266    o pkg/diagnostics: for large number of diagnostics, store diagnostic mate
3267      number in dedicate array "hdiag":
3268      - new version of S/R DIAGNOSTICS_ADD2LIST : DIAGNOSTICS_ADDTOLIST
3269        with 1 more argument (mate number); modify old version DIAGNOSTICS_ADD2LIST.
3270      - many small changes (integer format) for large number of diagnostics
3271      - start to use DIAGNOSTICS_ADDTOLIST (necessary for diagnostics with
3272        a counter mate) in pkg diagnostics, ptracers, thsice & aim_v23.
3273    o add parameter rotateGrid and Euler angles EulerPhi/Theta/Psi. For
3274      usingSphericalGrid, this allows to define the rotated grid coordinates
3275      via phiMin/thetaMin/dxSpacing/dySpacing, etc., but then re-compute the
3276      geographical coordinates according to the inverse of the rotation defined
3277      by the Euler angles, so that Coriolis parameter and online-interpolation by
3278      exf works with the geographical coordinates on XC/YC/XG/YG.
3279      Naturally, this feature does not work with all packages, so some
3280      combinations are prohibited in config_summary (flt, flt_zonal, ecco,
3281      profiles), because there the coordinates are assumed to be regular
3282      spherical grid coordinates.
3283    o pkg/gmredi,ctrl,ecco,autodiff,grdchk and model/src,inc:
3284      - introduce isopycnal diffusion coefficient control.
3285    o tools/adjoint_options:
3286      - additional control vector components.
3287    o pkg/mnc: have mnc create marginally meaning full coordinate variables
3288      (that is the grid indices) if usingCurvilinearGrid and NOT EXCH2
3289    o pkg/mypackage:
3290      - add example of read/write pickup for state-var ;
3291      - add entry points to the main code for state-vars diags & write-pickup.
3292    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
3293      transitions for useExfYearlyFields
3294      - add new subroutine that determines the file to read from for
3295        use*YearlyFields = .TRUE. and .FALSE.
3296      - add a verification experiment to global_with_exf that tests
3297        useExfYearlyFields with USE_EXF_INTERPOLATION defined
3298    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
3299      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
3300      subroutines (which could be generated from a template, because they are
3301      almost identical), for now they are included in obcs_prescribe_read.F for
3302      simplicity
3303    o pkg/exf:
3304      - add a little more diagnostic to exf_interp_read (in analogy to
3305        mds_read_field, can be turned off with debugLevel < debugLevA=1)
3306      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
3307        ugly but fast by unrolling short inner loops, inserting a unroll=8
3308        directive in routine lagran, and splitting a loop and making do while the
3309        outermost loop (the latter requires the intoduction of index arrays)
3310    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
3311    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
3312      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
3313    o verification/seaice_obcs: updated for restart test and latest options
3314    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
3315      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
3316      for now this is only available for the C-grid code and also within
3317      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
3318    
3319    checkpoint59m (2008/01/14)
3320    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
3321      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
3322    o gad_som : fix flux output (& diagnostics) to have same units as other  
3323      advection scheme fluxes (was previously multiplied by deltaT).  
3324    o added verification/seaice_obcs both to test seaice open boundaries
3325      and to provide an example matlab scrpt for generating them
3326    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
3327    o pkg/salt_plume: clean up salt_plume_frac.F to
3328      remove redundancy in PlumeMethod 1 and 4
3329    o pkg/kpp: added saltplume diagnostics
3330    o pkg/obcs and pkg/seaice:
3331      - do not set uice and vice to zero when OB*icefile are unspecified
3332      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
3333      - moved seaice tracer obcs after call to seaice_growth
3334    o pkg/salt_plume: added various options for salt plume depth
3335      criterion and for vertical distribution of the salt
3336    
3337    checkpoint59l (2007/12/18)
3338    o pkg/ptracers: new version of ptracers pickup:
3339      read meta file and write only fields which are needed to restart.
3340      ( same logic as main pickup file ; also using pickupStrictlyMatch )
3341    o pkg/seaice:
3342      - add timescale for melting due to warm mixed layer as a means of
3343        setting SEAICE_availHeatFrac more conveniently
3344      - add a CPP-flag/runtime parameter check for flooding algorithm
3345      - reformulated availHeat in seaice_growth.F to be independent of AREA
3346    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
3347      unit changes
3348    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
3349    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
3350      SX vector computer.
3351    o pkg/seaice:
3352      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
3353        seaice forcing fields can now be read only through pkg/exf
3354      - removed some unused halos
3355    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
3356    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
3357      or U/VICE from U/VWIND before computing U/VSTRESS
3358    
3359    checkpoint59k (2007/11/30)
3360    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
3361      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
3362    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
3363      all experiments pass when compile with un-initialised var. checking option.
3364    o added pkg/salt_plume
3365    o script to test restart (for now, in MITgcm_contrib/jmc_script)
3366    o pkg/seaice: new read/write pickup version.
3367      read meta file and write only fields which are needed to restart.
3368      ( same logic as main pickup file ; also using pickupStrictlyMatch )
3369    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
3370    o lab_sea.hb87: modify the domain & update output.hb87.txt :
3371      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
3372      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
3373      process. Fixed here by closing the domain at the Northern boundary.
3374    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
3375    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
3376      a set of consecutive levels in/from a 3-D array.
3377    o pkg/ptracers:
3378      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
3379      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
3380    
3381    checkpoint59j (2007/11/09)
3382    o in pkgs: dic, obcs, offline, rbcs:
3383      standard way to compute coeff. for time interpolation between 2 time reccords
3384      which retains full precision (& make results less dependent on compiler).
3385      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
3386    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
3387      packages instead of reading ice cover and wind speed separately
3388    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
3389     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
3390      to allow to compile customized code before the update)
3391    o cleaning-up:
3392      - fix CPP instruction syntax in pkg/obcs
3393      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
3394        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
3395      - fix some threads issue in IO parts.
3396    o pkg/dic:
3397      - add tons of "_d 0" (--> much better testreports !)
3398       and then update outputs of tutorial_global_oce_biogeo
3399    o pkg/mom_fluxform:
3400      add a special version of momentum advection intended to conserve momentum
3401      next to a bathymetry step or a coastline edge. (default = off = #undef)
3402    o new read/write pickup version:
3403      - for now, only implemented for main (mdsio) pickup file.
3404      - write out only what is needed to restart; merge pickup_nh , pickup_ph
3405        and main pickup together.
3406      - read meta file; read only what is needed to restart; stop if a field
3407        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
3408        if it make sense (even if the restart is not perfect).
3409      - if no meta file, assume that pickup to read corresponds exactly to
3410        a pickup that would currently be written.
3411      - read pickup written in the old format (until checkpoint59i) if it
3412        recognizes an old meta file (no field-list).
3413      - add a meta file in exp. which starts from a pickup: 2 cases:
3414        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
3415         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
3416        b) a meta file describing the content of the associated pickup file
3417         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
3418    o pkg/mdsio & pkg/rw:
3419      - new routine to read a meta file ; new set of routine to read
3420        Multiple-fields file (with meta file).
3421    o added open boundary conditions capability for seaice
3422        HSNOW, HSALT, UICE, and VICE
3423    
3424    checkpoint59i (2007/10/21)
3425    o adjoint:
3426      * fix multiDimAdvection adjoint
3427        (partial recomputation problem by TAF for fVerT(:,:,kDown)
3428        and comlev1 size definition (maxpass vs. max. number of tracers)
3429      * verification/global_ocean.90x45x15 adjoint now tests
3430        NLFS and multiDimAdvection using DST3 (=30)
3431      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
3432    o pkg/kpp: add "_d 0" to real constant (if missing);
3433      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
3434      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
3435    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
3436      for internal parameters related to restart process (formerly from PARAMS.h)
3437      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
3438    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
3439      as argument. (only atm2d & obcs write_pickup have not yet been updated)
3440    o pkg/monitor:
3441      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
3442      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
3443      - account for deep Atmosphere factor and density factor (anelastic)
3444    o added open boundary conditions capability for seaice HEFF and AREA
3445    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
3446      thermodynamics
3447      - requires a little reorganization, which affects the testreport results
3448        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
3449        so that now the conservative form is tested
3450      - add a few comments
3451    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
3452    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
3453    o add new diagnostics to seaice: advective, diffusive fluxes (only for
3454      multidim-advection, for scheme 2 they are not filled) and transports,
3455      thermodynamic growth rates
3456    o change units of EmPmR (inside the code, + within coupling interface)
3457      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
3458      Affects results @ truncation level (cg2d match) and update output of
3459       experiments: lab_sea(6), global_ocean.90x40x15(10),
3460      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
3461      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
3462      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
3463      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
3464    
3465    checkpoint59h (2007/09/29)
3466    o pkg/exf:
3467      - improve vectorization by moving if-statement out of loops in
3468        exf_mapfields, exf_radiation
3469      - exf_bulkformulae.F: introduce 2D fields and vectorize code
3470    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
3471    o testreport:
3472      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
3473        monitor & update offline_exf_seaice exp. output.
3474      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
3475    o pkg/seaice:
3476      - bug fix in the evp solver: boundary conditions were affected be
3477        masking of zMax/zMin (changes results)
3478      - minor bug fix in boundary conditions in seaice_calc_strainrates
3479        (changes results for no_slip)
3480      - seaice_lsr.F: make interpolation of eta dependent on boundaries
3481      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
3482      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
3483        stress formulation and no-slip boundary conditions
3484    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
3485      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
3486    o pkg/seaice: a first HSALT time stepping equation has been checked in
3487    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
3488      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
3489      without requiring DO-IF statements
3490    o pkg/thsice:
3491      use continuous power-law function for partition of energy between lateral
3492      melting/freezing and thinning/thickening ; old code using step function
3493      still available with #undef THSICE_FRACEN_POWERLAW
3494      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
3495    o testreport: change AD testing : check against results/output_adm.txt
3496      using same scripts as for forward test.
3497    
3498    checkpoint59g (2007/09/17)
3499    o adjoint testing: in preparation for changing testreport:
3500      - output format: cost and grad written on separated lines
3501      - ad output results in directory "results" (instead of "results_ad")
3502    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
3503    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
3504    o pkg/ecco: allow user defined cost function contributions
3505    o testreport:
3506      Allow to choose (per experiment) the list of tested output variables
3507       and the main variable (used to issue a pass/FAIL ) ;
3508      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
3509      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
3510      Also modify printing of summary:
3511       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
3512       b) echo the list of tested variables in the individual summary.txt of
3513          each experiment.
3514    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
3515      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
3516      (but still depend on the tile decompostion of the domain).
3517    o pkg/seaice: change a discretization detail to make the B-grid code
3518      "more symmetric". This change is likely to remove all "ridges/leads" that
3519      where quasi-aligned with the grid in B-grid solutions. It may also be
3520      the solution to the stress coupling issues with the B-grid.
3521    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
3522      remove .cvsignore from input dir. (since testreport no longer run here).
3523    o pkg/thsice:
3524     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
3525     - fix reshaping of sea-ice just after advection:
3526       melt all the ice only if ice-volume is too small.
3527     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
3528       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
3529     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
3530    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
3531      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
3532    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
3533      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
3534      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
3535      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
3536      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
3537      -> update output.txt
3538    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
3539     this affects truncation error: -> update output.txt of exp:
3540      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
3541      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
3542    
3543    checkpoint59f (2007/08/21)
3544    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
3545    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
3546      a bounded range (in forward mode)
3547    o pkg/ecco, ctrl, autodiff and mom_common:
3548     internal parameter controls, completements of implementations
3549    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
3550    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
3551      (not seem any difference in testing results).
3552    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
3553       at face corners.
3554    o pkg/generic_advdiff:
3555     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
3556      loop range indices for computing vertical advection tendency
3557      and do the calculation in the interior only (no overlap) ;
3558      for now, only implemented for SOM advection (to save CPU time).
3559     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
3560    o exch2 adjoint
3561      First set of changes:
3562      - add exch2 hand-written adjoint templates
3563      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
3564        This will require cleanup in pkg/autodiff/*.F
3565        (changed routines currently kept separate in verif. code/)
3566      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
3567        that used to hide exch2 or cubed-sphere specific code
3568        (commented via 'cph-exch2')
3569    o pkg/seaice
3570      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
3571    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
3572       output of global_ocean.cs32x15.thsice .
3573    
3574    checkpoint59e (2007/07/26)
3575    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
3576      for B-grid vector (not yet tested) and C-grid vector (<- only used
3577      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
3578    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
3579      (#ifdef ALLOW_SALT_PLUME)
3580    o gather_2d/scatter_2d: removed halo regions
3581    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
3582      scheme and the corresponding test case (under front_relax dir). For now,
3583      only available with Skew-flux form and not yet tested in realistic set-up.
3584      adjoint: store directives updated, but gradient checks deteriorated,
3585      so maybe GM/Redi adjoint is now broken.
3586    o seaice adjoint
3587      * add AREA, HEFF, HSNOW as control variable
3588        (should not change lab_sea results)
3589      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
3590    o pkg/seaice:
3591      * added computation of saltFlux in seaice_growth;
3592        For time being, sea ice salinity is assumed constant
3593        contribution of snow flooding to freshening of sea ice is neglected.
3594        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
3595        defaults to 0.0 in order to maintain backward compatibility.
3596        Typical values for SEAICE_salinity are 4 to 10 g/kg.
3597      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
3598      * added SEAICE_availHeatFrac, which specifies fraction of surface level
3599        heat content used to melt or grow ice
3600      * commented out cap of HICE: it helps keep ice thinner
3601      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
3602      * applied OBCS T/S mask to HEFFM sea ice mask
3603    
3604    checkpoint59d (2007/06/21)
3605    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
3606     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
3607     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
3608    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
3609     and change default value of parameter "GM_Small_Number";
3610     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
3611       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
3612       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
3613    o pkg/ecco: cost function when applying pkg/smooth to controls
3614    o pkg/ctrl: add forcingPrecond run time parameter
3615    o pkg/seaice:
3616     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
3617     - fix bug in metric terms of u-equation in LSR solver (implicit part),
3618       changes verification/lab_sea
3619     - rearrange implicit part of u-equation in LSR solver to make it easier to
3620       read, understand, and debug. This causes changes at the truncation level.
3621     - fix (serious) bug in the boundary conditions (sign error in the implicit
3622       part) of the LSR solver. Changes all LSR results.
3623     - fixed problem with HSNOW initialization to avoid thick snow when AREA
3624       is initilized with small values - does not change lab_sea results.
3625     - added HsnowFile initialization capability
3626    o pkg/smooth: addition to model/src and pkg/ctrl so allow
3627     initialization of pkg/smooth and application to control vector
3628    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
3629    o dependencies: pkg/profiles requires pkg/cal
3630    o pkg/profiles:
3631     - added option ALLOW_PROFILES_GENERICGRID
3632         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
3633         that interpolation information (grid points and coefficients) is provided
3634         within the netcdf input files.
3635         -> sample matlab scripts can be found in MITgcm_contrib/gael
3636         that allow you to prepare netcdf input files.
3637     - also modified: cleaner include statements, cleaner error print statements,
3638       cleaner stops when error, and more tests of the netcdf input files consistency.
3639    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
3640    o pkg/seaice:
3641     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
3642       requires a new routine: seaice_diagnostics_fill.F
3643     - make sure that seaice does not move if not forced (pressure replacement
3644       method, Hibler and Ip, 1995), changes results
3645     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
3646     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
3647       It is turned off by default (=-1.), because it changes the results.
3648     - make it possible to read AREA from a file, too.
3649    
3650    checkpoint59c (2007/06/04)
3651    o add S/R and diagnostics for oceanic mixed-layer depth
3652    o move GMRedi call after all vertical mixing schemes (including KPP)
3653    o pkg/thsice:
3654     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
3655      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
3656    o pkg/obcs:
3657     - bug fix for balance code
3658    o pkg/seaice:
3659      - allow values of SEAICE_elasticParm > 1
3660      - add new parameter SEAICE_evpTauRelax as an alternative
3661        to SEAICE_elasticParm
3662      - make lsr boundary conditions free slip (by default), changes result
3663      - add code for no slip boundary conditions for lsr
3664      - set minimum of zeta to zero (and not 4e8) (changes results)
3665      - add a cap on AREA after advecting AREA if seaice_growth is not called
3666    o change calculation of Visbeck K:
3667      - no longer depend on tapering scheme; instead, compute slope (limited
3668        by GM_maxSlope). this is equivalent to what was comuted before with
3669        clipping or linear tappering.
3670      - fix vertical averaging (wrong by 1/2 level)
3671      - leave the old version (but will not be maintained) within
3672        #ifdef OLD_VISBECK_CALC / #endif
3673      - update output of exp. ideal_2D_oce
3674    o change error catch in calc_r_star to improve vectorization
3675    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
3676      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
3677    o adjoint:
3678      Re-organized adjoint checkpointing according to Matt Mazloff
3679      (but with modifs/completions/cleanups)
3680      Storing is now bundled into large arrays to optimized I/O
3681      (and second step in cleanup of the_main_loop)
3682    
3683    checkpoint59b (2007/05/16)
3684    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
3685      - export/import (between ocean & coupler) fields needed for ocean DIC.
3686    o pkg/seaice:
3687      - get rid of three more exchanges seaice_calc_viscosities (required
3688        different loop boundaries in seaice_lsr and seaice_ocean_stress)
3689      - bug fix in seaice_ocean_stress (update of lab_sea required)
3690      - reduce loop boundaries to necessary minimum also in seaice_evp
3691      - go back to the old way of computing deltaC/Z as the adjoint likes that
3692        better
3693    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
3694      passive tracer to an Age Tracer) + update output.txt
3695    o pkg/exf:
3696      - implement A-grid / C-grid selection for wind-stress input files.
3697      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
3698      for now, in exf_bulk_largeyeager04.F only :
3699      - change implementation for case where windspeed + 2. components wind-stress
3700        are read-in. AND use rhoConstFresh to convert evap.
3701    o pkg/seaice:
3702      - use correct EXCH_UV for wind-forcing (on A-grid).
3703      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
3704        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
3705    o pkg/exf:
3706      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
3707      EXF_INTERPOLATION:
3708      - merge global_with_exf/code version of exf_interp_read.F
3709        to the main code ;
3710      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
3711        reading the file ; Important: This options needs to be defined to recover
3712        previous code.
3713        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
3714      - no longer loose real*8 precision along the way when using exf_iprec=64.
3715    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
3716      - change discretisation of evp-solver in order to avoid another exchange
3717        (changes lab_sea) and clean up a little
3718      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
3719        help the adjoint (this also changes the results slightly)
3720      - add a few "_d 0" where they had been missing in seaice_evp.F
3721      - cleaning up: remove unused seaice_calc_rhs.F
3722    o pkg/exf: some cleaning-up:
3723      - change various "constants" into runtime parameters
3724      - cleaned-up Large&Yeager04 routine which should eventually
3725        replace exf_bulkformulae.F (changed names of S/R and CPP)
3726        and merged various ALLOW_ATM_WIND options
3727     only used with thsice pkg (in thsice_get_exf.F):
3728      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
3729        which are used when useStabilityFct_overIce=TRUE (= the default)
3730      - change default values of ice & snow emissivity and scale downward LW
3731        by ice & snow emissivity.
3732    o pkg/thsice:
3733     fix few little problems, in thsice_calc_thickn.F:
3734      - growth vertically (and not laterally) if iceFrac == iceMaskMax
3735      - melt only laterally if hIce < hThinIce (as the comments say)
3736      and in thsice_extend.F:
3737      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
3738      - start to form ice as soon as the minimum ice-volume is reachable.
3739     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
3740      and cpl_aim+ocn
3741    o pkg/kpp
3742     - move computation of surface related input fields to KPP into a new
3743       subroutine kpp_forcing_surf.F
3744     - remove wrong (within bi,bj loops) EXCH calls.
3745     - little cleaning (add argument myThid in last position, cvs header ...)
3746     - for now, fix conservation problem by exchanging KPPviscAz (may not
3747       be the best fix)
3748    o pkg/seaice
3749     - check for inconsistent evp parameter/cpp-flag combination
3750     - remove leftover errIO flat for obsolete name list error handling
3751    o OpenAD
3752     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
3753    
3754    checkpoint59a (2007/05/01)
3755    o pkg/seaice: some parameter clarifications and a little bit of clean up
3756    o pkg/thsice: rename run-time parameters:
3757       himin       -> hIceMin
3758       himin0      -> hThinIce
3759       hihig       -> hThickIce
3760       i0          -> i0swFrac
3761       transCoef   -> bMeltCoef
3762       frac_energy -> fracMelting
3763      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
3764       with default values (for now) that do not change the results.
3765      remove old version of thsice vars advection in pkg/seaice.
3766    o in FFIELDS.h:
3767      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
3768      - make pLoad & sIceLoad always available (but still only used if
3769         ATMOSPHERIC_LOADING is #define).
3770    o pkg/kpp: replaced _KPP_RL with _RL
3771    o bug fixes for vertical diffusivity computations when both KPP and
3772        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
3773        are no longer updating the vertical diffusivity array
3774        (passed as argument) but are (re-) setting those arrays.
3775    o pkg/seaice: fix bug in evp solver, while doing that
3776      - change (improve?) discretization of stress computations for both
3777        cgrid-lsr and evp solver
3778      - add a new routine to compute strain rates
3779      - the above changes lab_sea results
3780      - add no slip conditions for evp solver (off by default), lsr-version
3781        may follow
3782      - fix exchange for shear at Z-points (does not change lab_sea)
3783      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
3784        (to force the user to pick a time step since there is not "safe" way
3785        of choosing it)
3786      - add principal stress diagnostics
3787      - rearrange fields for evp a little to avoid having to call a: too many
3788        exchanges and b: exchanges for stress trensor components which we do
3789        not have.
3790      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
3791        of evp, complete rewrite for lsr case (latter is does not yet work
3792        in all cases)
3793    o pkg/kpp: add code to have mixing in shelf ice caverns
3794      - add myThid to all kpp routines (long overdue)
3795    
3796    checkpoint59 (2007/04/19)
3797    o pkg/exf:
3798      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
3799        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
3800      - move exf header files from lower_case.h to UPPER_CASE.h ;
3801        add missing cvs Header & Name
3802      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
3803      - add namelist param. selectStressGridPosition, exf_monFreq
3804      - retire many _CLIM routines, and remove data.exf_clim
3805        + params moved to data.exf
3806        + climsst, climsss now handled by exf_set_gen, i.e.
3807          climss?period=0 refers to constant field,
3808          climss?period=-12 to monthly forcing
3809      - split up namelists in data.exf
3810    o pkg/seaice:
3811      - remove seaice_exch and seaice_exch_uv
3812      - remove superfluous exchange of theta
3813      - add myThid to seaice_budget_ocean/ice
3814      - add new interface for atmospheric wind forcing (C-grid only)
3815        + new routine
3816        + two new field (taux, tauy for stress over ice)
3817        + removed one global field (DAIRN) for C-grid case only
3818    o pkg/thsise
3819      - 2nd set of modifs for thsice adjoint in conjunction with exf
3820    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
3821    
3822    checkpoint58y_post (2007/04/15)
3823    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
3824      vertical diffusivity, similar to that in MOM4; turned on using
3825      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
3826      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
3827    o Added capability for 3D specification of background vertical diffusion
3828      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
3829      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
3830      "data" file that contains the 3D vertical diffusivity coefficients.
3831    o ice dynamics (pkg/seaice) with thsice thermodynamics:
3832      - add code within pkg thsice to advect & diffuse sea-ice fields
3833      similar to (and will replace) what has been added in  seaice_advdiff.F,
3834      but: - conserving Mass, Heat & Salt.
3835           - better when using non-linear advection scheme (not yet fully tested)
3836           - can also be used in atmospheric set-up (for now, only the diffusion).
3837    
3838    checkpoint58x_post (2007/04/04)
3839    o IO option for global-file compact format:
3840      - add options when generating topology (utils/exch2/matlab-topology-generator)
3841      - add I/O capability (pkg/mdsio).
3842      - adapt utils/matlab/rdmds.m to read this format.
3843      for now long-line format not yet supported by pkg/mdsio (& exch2).
3844    o shelfice: add a few diagnostics
3845    
3846    checkpoint58w_post (2007/03/13)
3847    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
3848      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
3849      (and replace horiVertRatio in NH code).
3850      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
3851                         and tutorial_plume_on_slope (sensitive to truncation)
3852    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
3853      directly to drive seaice model (C-grid only)
3854    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
3855     - reintroduce computation of wind from stress,
3856     - compute tau (in exf_bulkformulae.F) from windstress averaged to
3857       mass points to avoid tau = 0
3858     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
3859    o rdmnc.m: make it work with "global" files created with gluemnc
3860    o rdmnc.m : some improvements in dealing with singleton dimension
3861      (tested on all testreport mnc output files).
3862    o genmake2: disable pkg/profiles if netcdf test fails.
3863    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
3864    o move call to cal_readparms up to make calendar parameters/variable available
3865      to all packages
3866    
3867    checkpoint58v_post (2007/02/08)
3868    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
3869      useDynP_inEos_Zc tested.
3870    o pkg/exf: changes to properly interpolate/mask/scale initial fields
3871    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
3872      and portions thereof.  See read_cs.txt for description and examples.
3873    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
3874      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
3875      following the great-circle arc between those 2 points.
3876    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
3877      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
3878    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
3879     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
3880     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
3881     - still needs work (not working with some options ; efficiency to improve)
3882       and serious testing.
3883     - use this scheme for temperature & salinity in 2 advection test exp.:
3884       advect_xy & advect_xz, respectively.
3885    
3886    checkpoint58u_post (2007/01/12)
3887    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
3888    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
3889    o testreport: add option "-skipdir" to skip some test.
3890    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
3891      momentum calculation.
3892    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
3893    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
3894      remove checkpoint.F and the_correction_step.F (no longer used);
3895      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
3896    o add option (linFSConserveTr) to correct for tracer source/sink due to
3897      Linear Free surface
3898    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
3899    o pkg/thsice: fix reading mnc-pickups
3900    
3901    checkpoint58t_post (2006/12/30)
3902    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
3903    o pkg/mdsio:
3904     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
3905       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
3906       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
3907     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
3908     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
3909       either MDS_READ_FIELD or MDS_WRITE_FIELD )
3910     - new S/R (to replace MDSWRITEMETA), which allows to write more
3911       informations (variable names, time ...) to meta files.
3912     - modify rdmds.m to give back the meta file content.
3913    o pkg/diagnostics: change vertical interpolation to be safer, and more
3914       flexible (define p-levels to interpolate to in data.diagnostics);
3915      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
3916       diagnostic pointer.
3917    o pkg/seaice: more cleaning up of seaice_growth, added many comments
3918    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
3919    o fix multi-category seaice:
3920     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
3921       SEAICE_MULTICATEGORY
3922     - fix short wave heat flux
3923    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
3924       and allow to use EVP solver. Change forward lab_sea: test both EVP
3925       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
3926    o Initial check-in of lab_sea adjoint
3927      (very similar to natl_box_adjoint/code_seaice)
3928      * used C-grid and EVP solver
3929      * used KPP, GM/Redi
3930      * uses inAdExact=.TRUE.
3931      * gradient checks fail for both ADM and TLM
3932        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
3933        f.d. gradients actually seem more problematic than ADM, TLM gradients;
3934        issue is related to forward mismatch between g77 an ifort
3935    o pkg/seaice: overhaul of thermodynamics
3936     - growth.F and groatb.F are replaced by new routine seaice_growth.F
3937     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
3938     - move a few global fields out of SEAICE.h into seaice_growth.F and
3939       make them 2D (FICE/QNETO/ ...)
3940     - remove FO (it is the same as QNETO)
3941     - introduce a few local fields to avoid modifying external fields such
3942       as atemp, etc.
3943    
3944    checkpoint58s_post (2006/12/11)
3945    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
3946      changed exf_set_gen.F so that
3947        genperiod=0 means input file is one time-constant field and
3948        genperiod=-12 means input file contains 12 monthly means
3949    o CG2D: use pre-computed solver main-diagonal (stored in common block);
3950      this affects truncation error ; generate new output file for exp. which
3951      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
3952        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
3953        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
3954        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
3955        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
3956        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
3957    o start implementation of deep-atmosphere and anelastic formulation
3958    o verification: remove 2nd copy of input files and use script "prepare_run"
3959      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
3960    o mom_common/vecinv/fluxform: fix a few initialisation isssues
3961    o profiles: fix for multithreaded case
3962    
3963    o diagnostics: rename few diags:
3964      s/'PRESSURE'/'RCENTER '/g
3965      s/'TICE    '/'oceFreez'/g
3966      s/'TAUX    '/'oceTAUX '/g
3967      s/'TAUY    '/'oceTAUY '/g
3968      s/'SWFLUX  '/'oceQsw  '/g
3969      s/DIFx/DFxE/g
3970      s/DIFy/DFyE/g
3971      and add few ocean-forcing diagnostics:
3972      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
3973    o modifications to pkg/seaice/growth.F and budget.F, which change results of
3974      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
3975      as actual snow thickness.  It now refers everywhere to effective snow
3976      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
3977    
3978    checkpoint58r_post (2006/11/17)
3979    o modifications to pkg/seaice/growth.F, which change results of
3980      lab_sea experiment: fixes pertain to melting snow over open water, to
3981      masking EVAP under sea ice, and to using the correct AREA variable for
3982      computations of EVAP, PRECIP, HSNOW, and GHEFF
3983    o add ability to read bathy, salt, and theta using MNC (off by def)
3984    o add flooding algorithm and advection of HSNOW for pkg/seaice;
3985      both are turned off by default and do no change any results
3986    o seaice advection with pkg/thsice: a step toward the use of non-linear
3987      advection scheme, but #ifdef or commented out for now (requires more EXCH).
3988    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
3989      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
3990      in natl_box (affects results @ truncation level: update output.txt)
3991    o multi-threading and IO:
3992      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
3993      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
3994        (needed to work with SingleCpuIO): tested in all verif. exp.
3995    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
3996      affects the results (but none of the verification test uses this scheme).
3997    o Adding some pkg/diagnostics capability to pkg/seaice
3998      (will certainly be subject to changes)
3999    o ctrl: adding new control variables:
4000      lwflux, lwdown, evap, snowprecip, apressure, runoff
4001    
4002    checkpoint58q_post (2006/10/20)
4003    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
4004      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
4005      high_res_cube configuration by 4% on Columbia.
4006    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
4007      add (in global_with_exf/code) a version of EXF_INTERP_READ without
4008      dynamical allocation (seems to work in multi-threaded).
4009    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
4010      single CPU io) so that TAF does not have to see EESUPPORT.h
4011    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
4012    
4013    checkpoint58p_post (2006/09/08)
4014    o obcs: stop if obcs is used with useCDscheme = .true.
4015    o shelfice:
4016     - fix a sign error so that no slip at shelfice interface works
4017     - remove stop for combination non-hydrostatic code and shelfice. That does
4018       not mean, that the results are correct, but at least they are numerically
4019       stable
4020    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
4021    o added adjoint exch routined for all exch*3d* routines
4022      and updated flow directives
4023    
4024    checkpoint58o_post (2006/08/28)
4025    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
4026      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
4027    o change controling S/R for writing pickup file (new S/R do_write_pickup)
4028      and clean-up reading/writing of pickup files.
4029    o fix local version of read/write pickup (NH part) in rotating_tank/code
4030    o simplify EXCH interface:
4031     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
4032     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
4033    o added the regrid package
4034    o shelfice:
4035     - add a simple boundary layer scheme to reduce noise
4036     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
4037    
4038    checkpoint58n_post (2006/08/14)
4039    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
4040       local variable (not in common block).
4041    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
4042      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
4043      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
4044        to work with SingleCpuIO.
4045    o add "_d 0" to real constant of pkg/cfc subroutines ;
4046       update exp. cfc_exemple & tutorial_cfc_offline output files.
4047    o multi-threading and IO:
4048      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
4049        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
4050      - barrier before and after reading.
4051      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
4052      - avoid using MDS_WRITELOCAL for LAND pkg output.
4053      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
4054        common-block variables ; Allows multi-threading with master-thread IO.
4055    o change default MAX_NO_THREADS from 32 to 4 ;
4056      and stop cleanly when MAX_NO_THREADS is too small.
4057    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
4058    
4059    checkpoint58m_post (2006/07/17)
4060    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
4061       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
4062    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
4063       keep global_ocean.90x40x15 (for AD testing) with former secondary test
4064       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
4065    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
4066        add MITgcm_tutorials (= code + all the tutorials)
4067    o ecco, option to compute cost for total ssh (mean+anom)
4068    o consistent with addition of ptracer and ssh in pkg/profiles
4069    o profiles: adding ptracer and ssh
4070    o testreport: change multi-test output-file name
4071      (from output.txt.{name} to output.{name}.txt)
4072    o profiles: now ok for mutli-tiles case
4073    o seaice: add 4 parameters for different advection schemes for area,
4074      (effective) seaice thickness, enthalphy, and snow height. Their default
4075      is the standard parameter SEAICEadvScheme
4076    o calc_gw:
4077     - add cosFacU in zonal viscous flux (harmonic.visc.).
4078     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
4079       of tutorial_plume_on_slope.
4080    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
4081    o calc_gw: true flux-form, account for horizontal grid spacing.
4082      update rotating_tank results, but not plume_on_slope (affected at
4083      truncation level, 11 digits).
4084    
4085    checkpoint58l_post (2006/07/12)
4086    o calc_gw:
4087     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
4088     - remove side-drag for now (need to fix it); update plume_on_slope results.
4089     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
4090    o commit code to make SST/SSS weights spatially variable
4091      (based on either variable in-situ or variable initial T/S weights)
4092    o pkg/ecco:
4093      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
4094        now based on horizontally varying weights wthetaLev, wsaltLev
4095      * cost_averagesflags now returns year indices in addition to day, month
4096      * sflux balance is performed on annual basis
4097        (sflxumm, sfluxmm2, bal_sfluxmm)
4098      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
4099        including separate counting and multipliers
4100    o pkg/rbcs
4101      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
4102    
4103    checkpoint58k_post (2006/07/06)
4104    o testreport:
4105     - always build in dir. "build" (if not there, mkdir build instead of building
4106       & running in input)
4107     - run in dir run (if it exists), in build otherwise.
4108     - call prepare_run (if input/prepare_run exists)
4109     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
4110    o pkg/exf modifications to interpolation and rotation routines for more
4111       reasonable treatment of North Pole singularity: for tracers North Pole
4112       value is set to northernmost zonal-mean value, for zonal velocity it is
4113       set to zero, and for meridional velocity it is set to northernmost value.
4114    o pkg/exf/exf_check_range.F
4115     - add tile index to diagnostics and move stop statement to the very
4116       end of the routine.
4117    o pkg/diagnostics: (diagnostics_main_init.F)
4118      define title of isomorphic variables according to the current config.
4119    o pkg/thsice with pkg/seaice dynamics:
4120    - fix domain of computation (interior only, required for exf) and do exchanges
4121    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
4122    o towards a standard way of dealing with multi-threading in MONITOR
4123      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
4124    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
4125       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
4126    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
4127    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
4128    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
4129       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
4130    o tracer advection:
4131     - clean-up and simplify calc_common_factors.F
4132     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
4133       advection subroutine (but still not used within DST advection S/R)
4134    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
4135    
4136    checkpoint58j_post (2006/06/15)
4137    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
4138      from file (collects calls previously in FORWARD_STEP)
4139    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
4140    o adjoint store dir. adjusted accordingly
4141    o genmake2
4142      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
4143    
4144    checkpoint58i_post (2006/06/14)
4145    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
4146      on wind stress (SEAICEstressFactor defaults to 1.)
4147    o Total number of Timers is finite (<=40): comment out 2 non-essential one
4148      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
4149    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
4150      on CS-grid: no longer loosing mass.
4151    o exf & curvilinear-grid: no longer modify longitude xC & xG.
4152    o pkg/ggl90: fix sloppy output and fix a bug
4153    o pkg/seaice: added SEAICEuseEVPpickup parameter
4154      - Set to false in order to start EVP solver with
4155        non-EVP pickup files when using SEAICEuseEVP
4156      - fix sign error in diffusion in seaice_calc_rhs
4157    
4158    checkpoint58h_post (2006/06/07)
4159    * Modifications for bottom topography control
4160      o replace hFacC by _hFacC at various places
4161      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
4162      o add non-self-adjoint cg2d_nsa
4163      o update autodiff support routines
4164      o re-initialise hfac after ctrl_depth_ini
4165      o works for 5x5 box, doesnt work for global_ocean.90x40x15
4166    * Adding verification for 5x5 box (4-layer) bottom topography control
4167    
4168    checkpoint58g_post (2006/06/07)
4169    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
4170       used for mean seasonal cycle, mean diurnal cycle); add an example
4171       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
4172    o pkg/ggl90:
4173      - add parameter (minimum surface kinetic energy)
4174      - fix bug (avoiding division by zero)
4175    o couple pkg/thsice to pkg/seaice:
4176      - modify advection in seaice to accomodate new scalar fields to be advected
4177      - only muliDimAdection scheme work with seaice/thsice
4178      - mapping of thsice-variables to seaice-variables, back and forth
4179      - does not break the verification experiments, but does not give the
4180        desired results either
4181    o pkg/seaice
4182      - make (default) second order advection a bit less confusing?
4183    
4184    checkpoint58f_post (2006/06/05)
4185    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
4186      to pkg/seaice):
4187      - new routines thsice_map_exf and thsice_get_exf provide the interface
4188      - add an additional formal parameter to thsice_solve4temp
4189    o pkg/exf:
4190      - add new fields wspeed, snowprecip (to be able to couple to thsice)
4191      - correct Stefan-Boltzmann constant
4192      - new parameter for longwave surface emittance
4193      - separate some stuff from exf_bulkformulae into new routines  
4194        exf_radiation, exf_wind
4195      - add new parameters and constants: longwave emissivity for ocean, ice
4196        and snow, evaporation parameters over ice
4197      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
4198        either wind from stress or stress from wind
4199    o pkg/thSIce:
4200    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
4201    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
4202       and THSICE_CALC_THICKN
4203    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
4204    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
4205      to make debugging easier.
4206    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
4207    o pkg/bulk_force:
4208      - clean-up comments and parameters ;
4209      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
4210    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
4211      generate new output for test-experiment: aim.5l_cs.thSI
4212    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
4213      testreport accordingly
4214    
4215    checkpoint58e_post (2006/05/17)
4216    o SEAICE_CGRID adjoint done
4217    o R_STAR adjoint implemented.
4218      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
4219      * need to sort out init. of h0facc, etc.
4220    o Make pkg/profile fully independent of ecco,cost, etc. stuff
4221      to be able to use it in pure forward.
4222    
4223    checkpoint58d_post (2006/04/21)
4224    o upgrade simple test-experiment to tutorial example:
4225     step.1: duplicate the experiment and (step.2) will remove the old copy.
4226      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
4227      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
4228      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
4229      tutorial_global_oce_biogeo    <- copy of dic_example
4230      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
4231      tutorial_plume_on_slope       <- copy of plume_on_slope
4232      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
4233      tutorial_global_oce_optim     <- empty for now (David ?)
4234      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
4235     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
4236    o correct a sign problem in cost_scat.F
4237    o obcs and ptracers: fix boundary conditions for advections schemes
4238      with larger stencil
4239    o thsice adjoint: start
4240    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
4241      completeness
4242    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
4243      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
4244    o ptracers adjoint:
4245      * avoid extensive recomputatations
4246      * fix missing re-init. of gptr (missed by TAF)
4247    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
4248      me to turn off the excessive output to STDOUT that this package produces
4249    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
4250      and add those terms in Vector-Invariant formulation.
4251    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
4252      if the control period (xx_hfluxperiod etc) is 0
4253    o in profiles pkg, clean routines and fix details
4254    o in ecco pkg, reading ssh data:
4255      fix problem in case the model does not start at iter0=0
4256    o fix mnc-pickup/restart for ptracers
4257    o new package prifiles:
4258      code to compute profile-based cost by Gael Forget
4259      (modifs in ecco, ctrl, autodiff)
4260    o Benign bug fix in initialization (spotted by M. Mazloff) of
4261      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
4262    
4263    checkpoint58c_post (2006/03/23)
4264    o adjoint: finish NLFS adjoint and provide reference output in
4265      verification/global_ocean.90x40x15/results_ad_nlfs
4266    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
4267      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
4268      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
4269      with SEAICE_CGRID defined.
4270    o move calendarDumps from "data" to "data.cal" and clean-up the code
4271      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
4272    o add useEXF & useCAL flags (for now, set in hard-coded way)
4273    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
4274      (were missing in NH mode, and wrong in quasihydrostatic mode).
4275      waiting for Chris updated version of calc_gw to add those CALLs.
4276    o fix bug in quasihydrostatic S/R ;
4277      add a test for this option: global_ocean.90x40x15.qshyd
4278    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
4279      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
4280    o add on/off flag useOffLine for package OFFLINE
4281    o seaice:
4282      - modify advection so that it works also on the C-grid
4283      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
4284        problem in multi-tile runs with C-grid
4285      - add flags for clipping ice velocities and/or masking solver forcing
4286      - fix drag (ocean on ice) formulation and a bug that caused noise in the
4287        C-grid solver
4288      - added a few comments to seaice_diffusion.F
4289      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
4290        are now exclusive)
4291      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
4292        required re-ordering the code a little:
4293       + make DAIRN global variable (defined in SEAICE)
4294       + move computation of the viscosities eta and zeta into a new separate
4295         routine (because I need to recompute them in seaice_ocean_stress.F)
4296    
4297    checkpoint58b_post (2006/03/13)
4298    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
4299      update output.txt of exp. aim.5l_cs.thSI
4300    o various mnc cleanups and improvements:
4301      + shrink lookup tables by factor of ~4
4302      + better error reporting when running out of lookup space
4303      + able to handle longer path/file names (up to 500 chars)
4304    o adjoint:
4305      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
4306      - TBD: "hidden" mom_vecinv recomp. in dynamics
4307    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
4308     (allow to differentiate between forcing components using new integer flags:
4309      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
4310     and add new flag to put Dissipation tendency out of Adams-Bashforth.
4311    o ecco
4312      - enable trend removal from SSH anomaly obs.
4313    o adjoint
4314      - a fix for PmEpR when #undef EXACT_CONSERV
4315      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
4316      - try to fix "hidden" recomp. in forward_step for NLFS
4317        (NLFS seems broken sometimes after I checked it in)
4318    o seaice:
4319     - add c-grid version of the dynamic solver:
4320       + three new routines that are the c-grid substitute lsr, dynsolver
4321         and ostres
4322       + put a few fields that were local to dynsolver into global common
4323         blocks, so that I can move the computation of stresses etc into
4324         seaice_lsr (saves coding but may break the adjoint).
4325     - replace more hardwired parameters by runtime parameters
4326     - add ice masks that mask the rhs of the implicit solvers where there
4327       is no ice (commented out in seaice_dynsolver, because i am not sure
4328       if this works properly), eventually this should replace the clipping
4329       of ice velocities in seaice_dynsolver to +/-40cm/s.
4330    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
4331      include it only where its needed
4332    o move balancing of fluxes before the call of external_forcing_surf
4333    o seaice:
4334      - correct units of turning angles (now they are really in degrees)
4335      - move computation of GWATX/Y out of main routine into dynsolver
4336      - initialize GWATX/Y in seaice_init
4337    o Apply mask on Fresh-Water flux (needed for SSH forcing).
4338      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
4339    o seaice: add runtime flags for turning angles (default to zero)
4340    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
4341      and trend from exf forcing and ctrl control adjustments
4342    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
4343      (since checkpoint57x_post)
4344    o change the default rotation period to 86164.s = the Earth rotation
4345    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
4346      and based on a reference stratification. Tested within hs94.cs-32x32x5.
4347    o seaice advection: add code for choosing between the default (2nd order
4348      central differences) and multiDim advection schemes provided by
4349      pkg/generic_advdiff
4350    o seaice:
4351      - removed all references to SEAICE_GRID.h fields from
4352        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
4353        (cubed-sphere configuration will change a little)
4354      - grid computations in seaice_init are obsolete now.
4355      - cleaned up code a little so that is easier to read (hopefully).
4356      - added new (better?) discretizations of default advection and diffusion
4357        (turn on with SEAICEuseFluxForm)
4358      - replace 1 in 3d global fields by kSurface in growth.F
4359      
4360    checkpoint58a_post (2006/02/13)
4361    o seaice:
4362      - bug fix in advect.F
4363    o shelfice:
4364      - separate shelfice load anomaly from pload (breaks with time
4365        dependent forcing), => introduce constant field shelficeLoadAnomaly.
4366        Its default is 0., but it may be computed more cleverly from (unknown)
4367        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
4368        done offline. A good approximation of the pressure load anomaly is
4369        necessary to avoid large initial adjustment processes underneath
4370        deep-reaching shelfice.
4371      - small fix in ISOMIP shelfice_thermodynamics
4372      - add more sophisticated thermodynamics of Hellmer (1989), this is
4373        now the default
4374      - give a few constants more intuitive names
4375    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
4376      if bulk formulae are used in long integration (especially EmPmR). Turn
4377      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
4378      if balancePrintMean, the imbalance that is substracted is printed to
4379      STDOUT.
4380    o fix bug (typo) in obcs_apply_eta.F
4381    o add a new package shelfice which enables us to model the circulation
4382      underneath shelf-ice with draughts of hundreds of meters.
4383     - works
4384     - to do: + include improved thermodynamics
4385              + check whether kSurfC (from model/inc/SURFACE.h) can be used
4386                instead of new field kTopC
4387              + can we use topoFile, Ro_surf and existing code in ini_depth.F
4388                instead of new field R_shelfIce and new code in ini_depth.F
4389                and ini_mask_etc.F?
4390              + adjust vertical mixing schemes?
4391    o seaice pkg:
4392     - add a cpp-flag to include a simple formula for a salinity dependent
4393       freezing point of sea water at the surface
4394     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
4395       meridional stresses are now different (and hopefully correct)
4396    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
4397       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
4398       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
4399    o pkg/diagnostics: add options and parameters for regional-statistics
4400       diagnostics ; define regions by reading a region-mask from a file
4401       (might add other options later)
4402    o pkg/bulk_force:
4403     - add option and parameters to use AIM surface-flux formulae.
4404     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
4405       others forcing fields (defined in PARM05, parameter file "data") are loaded
4406       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
4407     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
4408     - use the right EXCH call for uwind,vwind (to work on CS-grid).
4409     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
4410       and parameters (note: calcWindStress replaces .NOT.readwindstress).
4411     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
4412    
4413    checkpoint58 (2006/01/12)
4414    o add "--embed-source" option to genmake2 which, when the supporting
4415      tools can be compiled (as determined by genmake2) will turn on the
4416      embed_files package which then embeds the entire MITgcm source code
4417      (*.[fFhc] + Makefile) used for the build within the executable
4418      - requested by CNH but off by default
4419      - adds a paltry <9MB to the mitgcmuv executable in most cases
4420      - only writes the output when useEMBEDSRC in eedata is true
4421    o clean up 3-dim. relaxation codes:
4422      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
4423      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
4424      * Thanks to Tom Haine for testing!
4425    
4426    checkpoint57z_post (2005/12/31)
4427    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
4428      affects output (@ truncation level) of exp. plume_on_slope ; updated.
4429    o fix the pickup behavior for obcs in combination with ptracers
4430    o fix a bug in ptracers_external_fields_load
4431    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
4432      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
4433    o transfered surface NH pressure to eta field (if exactConserv).
4434    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
4435         and update lab_sea output.txt file.
4436    o completing 3-dim. relaxation code: additional term
4437         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
4438      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
4439      * At compile time, in "EXF_OPTIONS.h" set
4440          #define  ALLOW_CLIMTEMP_RELAXATION
4441          #define  ALLOW_CLIMSALT_RELAXATION
4442      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
4443          tauThetaClimRelax3Dim = 15552000.0,
4444          tauSaltClimRelax3Dim  = 15552000.0,
4445      * 3 cases:
4446          1) Use a constant-in-time 3-dim. field
4447          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
4448          3) Real-time relax. to time-evolving prescribed field
4449    o Adding Laplacian-type smoothness constraint on
4450      initial and boundary (forcing) controls (ic, bc)
4451      * enable at compile-time via
4452        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
4453      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
4454      * Absolute scale somewhat unclear so far
4455      * no area weighting was included since no other cost term does so far
4456    
4457    checkpoint57y_post (2005/12/08)
4458    First step for a NLFS adjoint
4459    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
4460    o new init. routines for calc_r_star, calc_surf_dr
4461    o still need to deal with ini_masks_etc
4462    o testreport seemed happy
4463    checkpoint57y_pre (2005/12/08)
4464    
4465    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
4466    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
4467    o add new offset feature to offline pkg (plus minor cleanup)
4468    o cfc fixes for final year of integration
4469    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
4470      be in GCHEM_OPTIONS).
4471    
4472    checkpoint57x_post (2005/12/04)
4473    o fix testreport Pb in multiple test experiment.
4474    o cleanup our namelist syntax in verification:
4475      - make it more F95 standards compliant (some work still needed)
4476      - allows the vast majority of our tests to work with gfortran
4477    o Non-Hydrostatic:
4478     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
4479     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
4480    o Allow to apply AB on T,S rather than on AB(gT,gS):
4481     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
4482     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
4483       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
4484     - need a "clever" read_pickup to restart from the other AB formulation
4485    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
4486    o remove some unused variables (reduces number of compiler warnings)
4487    o adjoint
4488      * Disable useVariableViscosity for adjoint for time being
4489        (there are a number of extensive recomputations)
4490      * Initialize certain variables needed for adjoint
4491    
4492    checkpoint57w_post (2005/11/03)
4493    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
4494                 fix the singleCpuIO RS version of MDSWRITEFIELD
4495       and add a WARNING if using globalFiles=T with multi-processors.
4496    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
4497      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
4498    o tracer advection scheme:
4499      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
4500       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
4501       was not very convenient).
4502      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
4503       (further tests needed for the implicit DST & Flux-Limiter schemes).
4504    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
4505      and sRef for convenience, handy, when you want to initialize
4506      ptracers in a large domain with a constant non-zero value. Also,
4507      untangle ptracers_init.F a little.
4508    
4509    checkpoint57v_post (2005/10/13)
4510    o change dome exp. to use variable viscosity in side-drag terms.
4511    o remove all the files from the cfc_offline test since they are now
4512      incorporated into tutorial_cfc_offline which has been producing
4513      identical results for a few days of testing
4514    o add new parameter: sideDragFactor to enable half-slip-side BC
4515      and change side-drag S/R to use viscosity from mom_calc_visc
4516      (can switch back by setting sideDragFactor=0.); affects results at
4517      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
4518       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
4519    o vorticity & strain are now computed without masking, to account for
4520      no-slip-side BC in variable viscosity calculation ; mask is applied
4521      anyway later on, before computing advection/coriolis terms.
4522    o modify exp4 to test new obcs support for reading from external files
4523      and for passive tracers
4524    o fix behavior of ptracers_monitor when monitor output is written to a
4525      netcdf-file; still not independent of monitor.F (writes in the same
4526      file).
4527    o change default value of tRef (put a uniform, meaningful value for ocean
4528      & atmos) and initialize sRef (was missing, as Martin mentioned).
4529    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
4530      to be proportional to enstrophy dissipation length.  Thus,
4531       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
4532      This is now consistent with Smagorinsky and with the manual.
4533    
4534    checkpoint57u_post
4535    o OBCS and PTRACERS: add open boundary support for passive tracers
4536      - either use homogenous (pseudo) v.Neumann conditions or prescribe
4537        OB-values from file; this is not different from the way theta and salinity
4538        are treated
4539      - however, Orlanski-radiation conditions are not supported, and the model
4540        will stop if you use pTracers and Orlanski at the same time.
4541      - beefed up the rountine obcs_external_fields_load: now only those open
4542        boundary values are overwritten with values from files for which there
4543        are really files, otherwise the OB-fields remain untouched. This makes
4544        it possible to use different OBs at different ends of the domain (as
4545        with EXF)
4546    o reduce number of exch calls in shap_filt (s2).
4547    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
4548      truncation level) 4/5 MLAdjust test results (11&12 digits match).
4549    
4550    checkpoint57t_post (2005/10/03)
4551    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
4552    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
4553      same truncation, independent of the face number: affects affects several
4554      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
4555    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
4556      note that biharmonic viscosity + no-slip was not tested in any experiment.
4557    o fix bug in non-linear free-surf side-drag ; generate new output for
4558      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
4559    o make mnc honor the writeBinaryPrec flag for most kinds of output
4560    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
4561    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
4562      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
4563    o add brackets in multi-terms sum to get same truncation, independent of
4564      the face number (manage to get exactly same value of gU,gV at the cs-edge)
4565      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
4566    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
4567      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
4568      a maximum grid-scale Reynolds number.  Also, changes all length calculations
4569      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
4570      Suggested values of viscosity parameters found in mom_calc_visc.
4571      Many new viscosity diagnostics available.
4572    
4573    checkpoint57s_post (2005/09/20)
4574    o Add clearing-house for viscosity calculations, mom_calc_visc and
4575      correct numerous bugs in LeithD and Smagorinsky discretizations.  
4576      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
4577      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
4578      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
4579      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
4580      The Strain-Tension form is now called with useStrainTensonVisc=.true.
4581      ViscAhStrain and viscAhTension are now retired.
4582    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
4583    o In response to JMC's bug report, genmake2 now ignores any soft-links
4584      that it finds in the *current* directory when searching for files.
4585      Soft-links found in any other source directories will still work as
4586      they did before.
4587    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
4588      a C routine to unlimit the stack size
4589    o mnc-ify pkg/aim snapshot vars
4590    o mnc-ify pkg/land as requested by Daniel
4591    o various changes to mnc including:
4592      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
4593      - output can now be grouped so that all files within a group
4594          change the ITER portion of their names in lock-step together
4595      - can now read ("global") PER-FACE (in addition to PER-TILE) files
4596          and works with both EXCH1 and EXCH2 (but needs more testing)
4597      - writing works for all verification test cases w/ g77 on Linux
4598    
4599    checkpoint57r_post (2005/09/07)
4600    o make MNC variable initialization happen earlier
4601    o add diagnostics for (almost) each term of the momentum Eq.
4602    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
4603    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
4604    o remove MINIMAL_TAVE_OUTPUT option ;
4605      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
4606    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
4607      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
4608    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
4609    o add time-dependent SST, SSS control
4610    o cost terms in ecco/ modularized (new cost_generic.F)
4611    o cost_averages routines are modularized (new cost_averagesgeneric.F)
4612    o new infrastructure for seaice model vs. obs misfits in seaice/
4613      * driver from the_main_loop.F is seaice_cost_driver.F
4614      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
4615      * gradient check in Exp. 6a of natl_box_adjoint/
4616    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
4617      (see README file)
4618    
4619    checkpoint57q_post (2005/08/19)
4620    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
4621    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
4622      - bug was reported by Jean-Michel and Ian Fenty
4623    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
4624      update exp. cpl_aim+ocn output.
4625    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
4626      Needed for high-res. runs with large global files
4627      to be able to limit tapelev size
4628    o Changed some tests for adjoint:
4629      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
4630      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
4631      * global_ocean.90x40x15/ back to default 3-level checkpointing
4632    o Modifications to enable scripted COMMON to MODULE conversion
4633      * verification/OpenAD/code/ has necessary scripts and description;
4634      * converts, compiles and runs successfully;
4635    
4636    checkpoint57p_post (2005/08/01)
4637    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
4638    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
4639      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
4640    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
4641    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
4642      (was already the case for dissipation with mom_vecinv,
4643       and also the case for grad.PhiHyd when staggered-timeStep)
4644      This will allow to put dissipation out-off the AB time-stepping.
4645     Unfortunately, affects truncation error. Update output of exp. that "fails"
4646      (cg2d matching number) and leave the others for later: front_relax(10),
4647      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
4648      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
4649    
4650    checkpoint57o_post (2005/07/30)
4651    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
4652      (2) its ready to be documented during the 20050801 DocFest
4653    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
4654      for ideal_2D_oce and lab_sea on linux_ia32_g77
4655    o set to #undef CTRL_SET_OLD_MAXCVARS_30
4656      in global1x1_tot/code_seaice_adj to access indices 32, 33
4657      (worth another tag)
4658    
4659    checkpoint57n_post (2005/07/29)
4660    o adding precip control xx_precip 32
4661    o adding swflux control xx_swflux 33
4662    o Replacing 10 forcing penalty cost routines by 1 generic.
4663    o Implementing partitioning in time-mean and variable adjustment
4664      for atmos. state.
4665    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
4666    o in natl_box_adjoint:
4667      * updated exp 1 to 10
4668        (but does not have time-mean vs. variable split results yet)
4669    o updated global1x1/*_seaice_adj/
4670      to incorporate latest changes
4671    o enable useSingleCpuIO for mdsio vector routines
4672      (applies in particular to tapelev I/O)
4673    o removed inefficient K-loop in all active_file*control*.F
4674    
4675    checkpoint57m_post (2005/07/28)
4676    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
4677      and advect_cs (use EXCH-2 and standard cs-32 grid files).
4678    o pkg/exch2: filling of face-corner halo regions is optional
4679      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
4680    
4681    checkpoint57l_post (2005/07/14)
4682     tag before updating tutorials (pre-release-2)
4683    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
4684       for output and interpolation of input fields onto model grid)
4685    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
4686       Affects results of exp. rotating_tank ; update output.txt.
4687    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
4688          and taking the square quantity and/or using a fraction-weight field.
4689    o fix aim_diagnostics_init.F mate numbers.
4690    o add mnc output capability to diagnostics/diagstat and update
4691      our cvsignore files for the ACSII output generated
4692    
4693    checkpoint57k_post (2005/07/02)
4694    o lab_sea now uses diagnostics package and provides a suite of
4695      new EXF diagnostics output.
4696    
4697    checkpoint57j_post (2005/06/30)
4698    o exf
4699      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
4700        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
4701        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
4702      * extended diagnostics output
4703        - now includes all EXF variables
4704        - hs, hl moved to common block
4705        - separate S/R for diagnostics, called after ctrl vector is added
4706        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
4707        - EXFqnet contains true Qnet (i.e. includes qsw)
4708      * updated verif. lab_sea, global_with_exf
4709      * Rearranging hflux (exf_mapfields -> exf_getforcing)
4710        to ensure that diagnostics sees a true EXFqnet
4711    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
4712    o diagnostics pkg: change pointers so that 1 diagnostic can be used
4713      several times with different frequencies.
4714    o mnc-ify the thsice package as requested by Daniel Enderton
4715      - the monitor--MNC output needs work
4716      - many attributes need to be added (most are currently blank)
4717    o mnc-ify theaim_v23 package as requested by Daniel Enderton
4718      - many attributes need to be added (most are currently blank)
4719    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
4720    o add Sadourny like discretization to the 4th.O vorticity advection scheme
4721    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
4722      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
4723         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
4724    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
4725     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
4726    
4727    checkpoint57i_post (2005/06/19)
4728    o Diagnostics package was changed: diagnostic allocation is now deactivated
4729      by setting an empty file name in the namelist (used to be by setting 0 frequency)
4730    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
4731      add 1rst Order upwind vertical Shear.
4732    o add a quick fix for A/B checkpointing in OFFLINE mode
4733    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
4734      end-run around the C/Fortran linking horror in eesup/src/timers.F
4735    o added pkg/runclock: allows user to terminate run based on wall clock
4736    o added non-hydrostatic scaling parameter: nh_am2
4737    o pkg/my82: futile attempt to make results compiler-independent by adding
4738      some "_d 0", etc. no effect.
4739    o for mnc output, fill the 'T' coordinate var with myTime and create a
4740      separate 'iter' variable for iteration count
4741    o pkg/diagnostics:
4742      add new capability: output of Global/Regional & per-level statistics ;
4743      tested against monitor output (including land & thSIce) on various exp.
4744    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
4745    
4746    checkpoint57h_done (2005/05/19)
4747      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
4748      data.diagnostics, data.gchem, data.ptracers) is done.
4749    
4750    o pkg/diagnostics: prepare for Global/Regional statistics.
4751      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
4752    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
4753      and rename it: DIFFERENT_MULTIPLE
4754    
4755    checkpoint57h_post (2005/05/14)
4756    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
4757    o pkg/diagnostics: change output frequency, now in seconds (instead
4758      of Nb of iterations). This requires to change data.diagnostics.
4759    checkpoint57h_pre (2005/05/12)
4760    
4761    o in mnc, let the user create the output dir if both mnc_outdir_date
4762      and mnc_outdir_num are false
4763    o add fflags() to pkg/diagnostics which allows one to specify, on a
4764      per-file basis, the file precision [default behavior is unchanged]
4765    o added diagnostics to pkg/kpp, including computation of mixed layer
4766      depth based on a temperature/density criterion
4767    o updated verification/natl_box to test the new pkg/kpp diagnostics
4768    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
4769    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
4770    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
4771      not mnc -- this mistake was found by JMC and is now corrected
4772    
4773    checkpoint57g_post (2005/04/15)
4774    o add Adams-Bashforth 3rd Order time stepping:
4775      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
4776      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
4777    checkpoint57g_pre (2005/04/15)
4778    
4779    o make lambda[Theta,Salt]ClimRelax spatially varying
4780      (default remains spatially uniform constant based on tau)
4781    o added new control variables
4782      * init. uVel, vVel, etanN
4783      * lambda[Theta,Salt]ClimRelax
4784    o separate masks used for ctrl_pack/unpack 'from write_grid' output
4785      (suggested by G. Forget)
4786    
4787    checkpoint57f_post (2005/04/06)
4788    o add parameter "baseTime" = model base time = time at iteration zero
4789      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
4790      account for baseTime shift
4791    o move Coriolis arrays from PARAMS.h to GRID.h
4792    checkpoint57f_pre (2005/04/06)
4793    
4794    o mnc-ifying the seaice package
4795    o introduced an alternative length scale calculation for use in the limiting
4796      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
4797    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
4798    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
4799      as well as grad(vort3).  Made it compatible with both approximate form
4800      for the cubed sphere and full form of these gradients.  Added flag
4801      useFullLeith to select between approximate and full form.  
4802    o add "d0" in getcon.F to reduce differences between compilers/platforms
4803      update output.txt of exp. fizhi-gridalt-hs
4804    o change port_rand funtion to allow to set the seed.
4805    o fix obscure MNC bug involving conversion between reals and integers
4806      - it caused no problems with certain (eg. gcc, ifc) compilers but the
4807        new version is now more standards-compliant
4808    o adjoint-related modifications
4809      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
4810      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
4811      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
4812    
4813    checkpoint57e_post (2005/02/28)
4814    o Adding eddy stress controls a la Ferreira et al.
4815    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
4816    
4817    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
4818      update output.txt of exp. fizhi-gridalt-hs
4819    o add more "Z" dimensions and associated coordinate vars to MNC
4820    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
4821    o parameter calendarDumps: when set, approximate months (30-31 days) and years
4822      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
4823      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
4824      months and years.  Requires pkg/cal.
4825    o diagnostics: add pickup functionality
4826      - off by default for backwards compatibility
4827      - current version only uses MDSIO -- MNC will be added
4828    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
4829    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
4830    
4831    checkpoint57d_post (2005/02/11)
4832    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
4833    o modify verification/ideal_2D_oce so that it tests the creation of mnc
4834      output from the diagnostics package
4835    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
4836    o make genmake2 more portable by using ".$FS" instead of ".f" for more
4837      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
4838    o add coordinate variables to the MNC output from the diagnostics package
4839    o change MNC-flags default value: true when useMNC=TRUE
4840    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
4841      the ability (off by default) to read the grid information using MNC
4842    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
4843    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
4844    o do snap-shot diagnostics at the middle of the time-interval (instead of
4845      at the end).
4846    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
4847      new test for AIM with thSIce + slab-ocean
4848    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
4849    o move state variable diagnostics to the beginning of the time step ;
4850      (note: still needs some work specially for snap-shot diagnostics)
4851      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
4852    
4853    checkpoint57c_post (2005/01/27)
4854    o Change testing option (-ieee) to get closer agreement between g77 & ifort
4855    o generate new output.txt files on faulks with g77 & the new -ieee option
4856    checkpoint57c_pre (2005/01/27)
4857    
4858    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
4859      update output.txt of exp. global_ocean.90x40x15
4860    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
4861      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
4862    o add saltFlux(+File) forcing capability with periodicExternalForcing
4863    o allow to use pkg diagnostics for GM-Redi & ThSIce output
4864    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
4865    o improvements for the MNC output from DIAGNOSTICS:
4866      - correct handling of the unlimitied dimension
4867      - all dims now have associated coordinate variables
4868      - variables located at U, V, and Corner ("Z") points are now written
4869        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
4870        *all* data points are output
4871    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
4872    o added pkg/seaice/seaice_monitor.F
4873    o mdsio_readfield.F can now read files visible only to master MPI process.
4874    o pkg/seaice: some test code for ice-modified ocean stress
4875    o exf_getffields interpolation defaults to bilinear for all scalar forcing
4876      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
4877      spurious negative numbers for precipitation and humidity.  Will cause
4878      some small numerical differences for integrations using pkg/exf/exf_interp.F.
4879    o pkg/ctrl/
4880      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
4881        May be enabled via doPackDiag
4882      *  introduce z-scaling of
4883         + gradient (doZscalePack) and
4884         + control (doZscaleUnpack)
4885    o pkg/mdsio/
4886      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
4887      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
4888    
4889    checkpoint57b_post (2004/12/20)
4890    o simplify options in diagnostics_fill arguments (remove weird combinations)
4891    o fix MNC coordinate variables so that they now contain per-face index
4892      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
4893      general, EXCH2 grids are only aligned to a "local" coordinate system
4894    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
4895    o Implement instantaneous output within pkg diagnostics:
4896      setting a negative frequency in data.diagnostics produces
4897     "snap-shot" output (as opposed to time-average if freq > 0)
4898    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
4899      NOTE: change ptracer diagnostics name: use 2 characters to work with
4900            more than 9 tracers. Add also diagnostics of advect & diffus flux.
4901    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
4902      becomes the coordinate variable for the 'T' dimension
4903    o add CF-style coordinate variables to MNC
4904      - just a first cut:  numbers are meaningless on the cubesphere and
4905        missing along the T axis but otherwise it works!
4906    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
4907    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
4908    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
4909      this is based directly on what the model compute, so that the content of
4910      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
4911    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
4912    o clean up build options files for SunOS, in particular
4913      - remove -traditional from xmakedepend
4914      - change -xarch=v9 to -xarch=native for f77
4915      - restore use of make (not gmake)
4916      - add CC=gcc if using g77
4917    o changes per discussion of AM, JMC, & EH3 today:
4918      - move redundant "grid" variables out of "state" -- in preparation of
4919        creating proper CF-style coordinate variables and in recognition
4920        that any/all grid variables can be easily copied (eg. w/NCO) from
4921        the grid files into any of the other NetCDF files
4922      - *always* output grid variables with MDSIO (this will eventually be
4923        changed)
4924      - output MNC grid file if useMNC is true
4925    o every instance of _END_MASTER() has been found and replaced with
4926      _END_MASTER( myThid ) in order to satisfy certain picky Sun
4927      preprocessors
4928    o re-arrange diagnostics pkg initialisation:
4929     - allow each package to extend the available diagnostics list
4930     - add some checking and fix small problems (multi-threaded, ...)
4931     - new S/R diagnostics_fill (replace fill_diagnostics):
4932       look through the short list of active diag. (instead of the long list)
4933       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
4934    
4935    checkpoint57a_post (2004/12/10)
4936    o this set of changes restores TAMC compatibility
4937      tested for global_ocean.90x40x15 adjoint on trough
4938      (what a pain)
4939    
4940    checkpoint57a_pre (2004/12/10)
4941    o some modifs in tools/build_options for sunos
4942    o call ctrl_pack for ctrl at end for optimcycle=0
4943    
4944    checkpoint57 (2004/12/09)
4945    o add horizontal bi-harmonic viscosity for vertical velocity
4946      - new parameter viscA4W (defaults to viscA4)
4947      - affects only non-hydrostatic code
4948      - to be done: no-slip lateral boundary conditions
4949    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
4950    o implement Implicit Vertical advection for pTracers
4951    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
4952      (implemented also for implicit vertical diffusion & advection)
4953    o OBCS: extend application of tracer open boundary conditions
4954      to a strip beyond the boundary of width Olx/Oly
4955    o add call monitor to TAF set of required calls (flow directives)
4956      and include in natl_box_adjoint
4957    o untangle a few ifdefs related to cost, ctrl, autodiff
4958      untangel a few ALLOW_ECCO_OPTIMIZATION
4959    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
4960      (theta2, salt2 in ecco_cost_weights)
4961    
4962    checkpoint56c_post (2004/12/03)
4963    o OBCS as control variables
4964      - update ctrl_ad_diff.list, obcs_ad_diff.list
4965      - remove balance of obcs controls from default
4966      - fix index bug nobcs in ctrl_init
4967      - fix dummy fields filen in ctrl_pack
4968      - add dummy weights for obcs
4969    o lsopt: comment out fort.94 output
4970    o optim:
4971      - remove unnecessary header files
4972      - adjusted namelists
4973      - add xerbla.F to Makefile
4974    o exf:
4975      - multiple modifications of exf_check_range
4976      - unit change in exf_init_runoff from [m/year] to [m/s]
4977    o mdsio:
4978      - i/o-vector change debugLevel from debLevA to debLevB
4979    
4980    checkpoint56b_post (2004/12/01)
4981    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
4982      is called from DO_THE_MODEL_IO
4983      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
4984      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
4985      - clean up PTRACERS_WRITE_TIMEAVE a little
4986    o add another verification experiment that tests both the cfc-pkg and
4987      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
4988      reactive tendencies treated inline with regular timestepping
4989    o testreport previously did a lousy job of comparing small numbers, so
4990      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
4991      implemented in the little c-progam tmp_cmpnum.c which is embedded in
4992      testreport.
4993    o ptracers_monitor: bug fix for MPI
4994    
4995    checkpoint56a_post (2004/11/28)
4996    o GCHEM: finish reorganizating the package
4997      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
4998        (introduces another 3D-array for each passive tracer, but only if
4999        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
5000        gchemTendency is not needed because the timestep is done separately)
5001      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
5002      - GCHEM is now---more or less cleanly---separate from PTRACERS
5003      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
5004        so clear to me how that should be done in a general way.
5005    o CFC: improve formatting of output in CFC_ATMOS
5006    o PTRACERS:
5007      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
5008        that ALL experiments with ptracers enable can be checked. This makes
5009        GCHEM_MONITOR obsolete.
5010      - include a runtime parameter PTRACERS_monitorFreq that defaults to
5011        monitorFreq
5012      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
5013    o add PTRACERS (PTR0[1-5]) to testreport output
5014    o exf_check_range:
5015      * default changed to .TRUE.
5016      * will check values for niter0 if debLevA, every timestep if debLevB
5017      * STOP in exf_check_range if 'out of range'
5018      * range chosen generous to allow for potential extema
5019      TBD: a version with stricter range
5020           permitted range would be runtime parameters
5021    o GMredi:
5022      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
5023      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
5024      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
5025    o GCHEM:
5026      - move call to GCHEM_FORCING_SEP, so that it is now called before
5027        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
5028      - introduced a useGCHEM runtime flag and applied it everywhere.
5029      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
5030        this flag is now only visible within GCHEM-pkg routines.
5031      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
5032        be replaced by a 3D array that is computed before thermodynamics; for
5033        this, the tracer ID iTracer had to be included into the parameter list
5034        of ptracers_forcing
5035      - set up forward_step to call gchem_forcing, that will replace
5036        gchem_forcing_int in ptracers_forcing
5037      - cleaning up
5038    o small cleaning of exch2: remove files that are also in eesupp/src
5039    
5040    checkpoint56 (2004/11/17)
5041    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
5042    o mnc: cleanup "full" files--fixes out-of-memory problem
5043    o ECCO-GODAE
5044      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
5045      * fully merged and updated from SIO code
5046        windstress sign change affects
5047        - exf_inscal_[u/v]stress
5048        - sign of xx_tau[u/v] adjustments
5049        - signs in cost_scat
5050      * ctrl_get_gen: avoid update of tau[u/v] for first few days
5051      * natl_box_adjoint updated and compressed
5052      * 2-level checkpoint switch added
5053        (tested in EXP. 1 of natl_box_adjoint)
5054      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
5055    o SVD
5056      * first complete, non-hacked version for SVD calculations
5057      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
5058        performed via direct access files admtlm_vector.it????
5059        (via ctrl_[un]pack)
5060      * optimcycle is used for ARPACK iteration counter
5061        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
5062      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
5063        and add linear transforms where necessary
5064      * controls are initial/final SST, SSS (can be extended; need to check
5065        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
5066    o mdsio: filename info to both stderr, stdout
5067    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
5068      from sign change
5069    
5070    checkpoint55j_post (2004/11/10)
5071    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
5072      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
5073    o add consistent build directories and .cvsignore files to verification
5074    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
5075    o make all subroutines 30 or less characters in length for certain older
5076      compilers to work (a thorough search only turns up two routines in
5077      pkg/ptracers)
5078    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
5079      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
5080    
5081    checkpoint55i_post (2004/10/28)
5082    o change arrays for total vertical diffusivity (2.D if explicit,
5083      3.D if implicit) ; each ptracer uses its own background value.
5084    o added mnc/NetCDF output capability to ocn_compon_interf
5085      - added bits to verification/cpl_aim+ocn so that it can run on
5086        ITRDA and other clusters without the mpirun "-wd" option
5087    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
5088      configuration
5089    o give MNC the ability to create additional files rather than
5090      exceeding a specified file size limit "MNC_MAX_FILESIZE"
5091      - the default is just less than 2GB which is a practical limit
5092        on many systems
5093    o Compute the non-local term using either KPP vertical diffusivity (=default)
5094       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
5095    
5096    checkpoint55h_post (2004/10/20)
5097    o add verification test "vermix"
5098    o remove all the *_ioinc flags and replace with the single global
5099      outputTypesInclusive flag
5100    o allow to set a vertical profile of vertical diffusivity for T & S
5101    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
5102    o useMNC moved from data.mnc to data.pkg
5103    
5104    checkpoint55g_post (2004/10/14)
5105    o Renaming carbon AD experiments to comply with testreport conventions
5106    o Updating adjoint of Held-Suarez hs94.1x64x5
5107    o Fixing directives for non-ECCO forward_step, after ECCO directives
5108      have been fixed to avoid recomp. of do_oceanic_phys
5109      Works well for global_ocean.90x40x15,
5110      but recomp. issue remains for carbon
5111    o Updating adjoint output for natl_box_adjoint after
5112      pkg/ecco has been modified (see taga c55d_post)
5113    
5114    checkpoint55f_post (2004/10/13)
5115    o rename to timeave_init_fixed
5116    
5117    checkpoint55e_post (2004/10/13)
5118    o some delicate re-shuffle of store directives to avoid one
5119      extra call of do_oceanic_physics
5120      affects ecco_the_main_loop.F, do_oceanic_physics.F
5121      checkpoint_lev1_directives.h
5122    o NB: this may break global_ocean adjoint temporarily,
5123      but it is clear how to fix it. Will do later, need this now.
5124    
5125    checkpoint55d_post (2004/10/11)
5126    o ECCO specific cost function terms (up-to-date with 1x1 runs)
5127    o ecco_cost_weights is modified to 1x1 runs
5128    o modifs to allow observations to be read in as
5129      single file or yearly files
5130    o enable to read exf forcing fields as either
5131      single file or yearly files (flag useExfYearlyFields)
5132    checkpoint55d_pre (2004/10/08)
5133    
5134    o switch between 2-level and 3-level checkpointing
5135    o add ability of MNC to write local and "partial" (eg. 2D slices where
5136      the full 3D field is never actually stored) arrays to NetCDF files
5137      with the correct (that is, the complete multi-dimensional) set of
5138      array indicies
5139      - used in mom_vecinv() to write the diagFreq output
5140      - tested (demonstrated) in verification/aim.5l_cs
5141    o further mnc-ification
5142      - add verification/lab_sea to the list with mnc setups
5143      - fix undefined mnc v-names in cd_code
5144      - add kpp to mnc output (both snapshot and timeave)
5145    o non-hydrostatic code
5146      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
5147        in calc_gw.F
5148      - defaults to viscAh
5149      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
5150        friction or Leith) in non-hydrostatic mode, as long as there is
5151        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
5152    o pkg/cost
5153      extend simple cost functions to treat time mean quantities
5154      (T,U,V) via cost_accumulate_state from cost_tile
5155    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
5156        be 2 times larger than the minimum size the advection scheme requires.
5157        now get a perfect conservation of salt in advect_cs test-exp (updated)
5158    o GGL90 (Gaspar's TKE mixed layer)
5159      - add horizontal diffusion of TKE, requires exchanges in
5160        do_fields_blocking_exchanges, horizontal diffusivity is zero by
5161        default. In OPA there is no horizontal diffusion of TKE but the
5162        mixing coefficients are computed from a horizontal average of TKE of
5163        6 points or so. I think that diffusion has a little more physical
5164        justification.
5165      - clean up ggl90_calc in the hope of reducing memory usage (this hope
5166        was in vain)
5167      - mask tke-variable in ggl90_init
5168    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
5169    o fix biharmonic diffusion on CS-grid.
5170    o more obcs stuff
5171      - added obcs_external_fields_load as an alternative to the EXF-pkg option
5172        for reading boundary values. This routine is called from
5173        obcs_prescribe_read
5174      - updated obcs_check
5175      - changed sponge layer relaxation parameter units for days to seconds
5176      - turned off sponge layer by default
5177      - changed argument list of OBCS_CALC to myTime+deltaTclock
5178      - fixed about 35 bugs in obcs_external_fields_load
5179    
5180    checkpoint55c_post (2004/09/23)
5181    o obcs stuff
5182      - new runtime flags useOBCSprescribe, useOBCSbalance
5183      - re-arranged obcs_calc
5184      - moved exf_getobcs to obcs_prescibe_read
5185        obcs_prescibe_read is called after ORLANSKI stuff
5186        and independent of it (executable can contain all).
5187      - updated obcs_check
5188      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
5189        These may be necessary only if tangential velocities are
5190        prescribed at OB, not sure, needs testing.
5191    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
5192      which simplifies the calls and passes the ifc check-bounds test
5193    
5194    checkpoint55b_post (2004/09/22)
5195    o add a 2D scalar, Z location, exchange_2 routine.
5196    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
5197      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
5198      affects advect_cs results (for the wrong reason): update output.txt
5199    o use a more standard discretization for biharmonic viscosity ;
5200     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
5201      affects results of dome set-up: update output.txt
5202    o fix gad_advection.F (CubedSphere part), back to version 1.23
5203    o fix bug in mom_vi_del2uv.F (CubedSphere part).
5204    
5205    checkpoint55a_post (2004/09/20)
5206    o merged code to
5207      * prescribe/read time-dependent open boundaries
5208        (works in conjunction with exf, cal)
5209      * sponge layer code for open boundaries
5210      * each boundary N/S/E/W now has its own CPP option
5211        (healthy for the adjoint)
5212    
5213    checkpoint55 (2004/09/17)
5214    o up-to-date adjoint of previous breaks
5215      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
5216      - global_ocean_ebm: adjoint still needs fix (TLM ok)
5217      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
5218      - carbon: * remove tr1-related adjoint verification
5219                * add ptracer as control variable
5220    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
5221      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
5222    
5223    checkpoint54f_post (2004/09/16)
5224    o in verification/carbin/ remove experiment related to
5225      ALLOW_PASSIVE_TRACER (array tr1 etc)
5226      code_ad/ input_ad/ results_ad
5227    
5228    o add two new packages
5229      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
5230        + subject to optimization (memory)
5231      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
5232        + subject to reordering (many GOTOs in the original code)
5233        + so far opps is called for every (i,j) point, and then operates in
5234          the vertical; one may want to reorder the scheme in order operate in
5235          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
5236          fields)
5237    o overhaul of IO so that we now have flags for MDSIO and/or MNC
5238      - all verification tests compile and run with linux_ia32_g77
5239      - defaults are compatible with current input files--nothing
5240        should change if you were not previously using MNC
5241      - MNC output has been added in numerous places (eg. timeave)
5242        but there are still a few writes not yet do-able with MNC
5243        (this is in progress)
5244      - flags now allow for either/or/both use of MDSIO and MNC and
5245        documentation will soon follow
5246      - numerous small formatting cleanups for ProTeX
5247    o add version info (via BUILD_INFO.h) to MNC and stdout
5248    
5249    checkpoint54e_post (2004/09/02)
5250    o add two new packages
5251      - pp81 (Packanowski and Philander, 1981), Richardson number and
5252        stratification dependent mixing
5253      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
5254      - these scheme operate in a similar manner as KPP (without ghat, of
5255        course), however there is only one diffusivity that is used for both
5256        temperature and salinity (and passive tracers)
5257    o add offline package
5258    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
5259      provided by Stephanie Dutkiewicz
5260    o genmake2: add ability to search for C compilers and cleanup test output
5261      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
5262    
5263    checkpoint54d_post (2004/07/27)
5264    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
5265    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
5266      leading to additional shift by 5 days each year of integration
5267       (i.e. leading to considerable offset over the years)
5268    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
5269    o start with no AB and no initial filtering (staggerTimeStep):
5270      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
5271    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
5272      (external loading & cpl import/export stay in forward_step.F)
5273    o update coupling interface to work with new staggerTimeStep
5274    o change MDSIO ptracers_pickup.
5275    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
5276    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
5277    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
5278    
5279    checkpoint54c_post (2004/07/18)
5280    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
5281      this affects (truncation error) output.txt of test-exp:
5282       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
5283    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
5284    o change Qnet to always be the net heat flux, (+upward).
5285      affects (truncation error) output of natl_box exp.: updated
5286    o define the max number of passive tracers in PTRACERS_SIZE.h
5287    o start to test mnc routinely in exp0
5288    o add sea-ice loading (sIceLoad) as a new forcing field.
5289    
5290    checkpoint54b_post (2004/07/08)
5291    o add testreport "-j JOBS" option for parallel builds (tested and pretty
5292       impressive on Altix and Opteron systems)
5293    o diagnostics can now write NetCDF files through the mnc package
5294    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
5295    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
5296    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
5297      affects (truncation error) output of lab_sea & natl_box exp.: updated
5298    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
5299    
5300    checkpoint54a_post (2004/07/06)
5301    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
5302    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
5303    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
5304    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
5305      + internal_wave (shift in writing cg2d_ini_res)
5306    checkpoint54a_pre (2004/07/05)
5307    
5308    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
5309      - modified verification/lab_sea and natl_box_adjoint accordingly
5310    
5311    checkpoint54 (2004/07/02)
5312    checkpoint53g_post (2004/07/02)
5313    o prepare splitting of thermodynamics: store convect.counter in common block
5314    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
5315      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
5316    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
5317    o new parameter "nShapS": allow to treat differently S from T (nShapT)
5318    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
5319    o restore adjointability
5320    
5321    checkpoint53f_post (2004/06/25)
5322    o modifications that affect AIM experiment results (update output.txt):
5323      - no advection of S at top interface Nr (pkg/generic_advdiff)
5324      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
5325    o AIM pkg:
5326      - include stability function into surf.Flux derivative relative to Tsurf
5327      - calculate clear-sky radiation & surface temp. change (for diagnostics)
5328    
5329    checkpoint53e_post
5330    o merged cylindrical coord configuration
5331    o added rotating_tank experiment
5332    checkpoint53e_pre
5333    
5334    checkpoint53d_post (2004/06/14)
5335    o faulks upgraded: re-generate output.txt that have changed:
5336       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
5337    o Added Bryan and Lewis, 1979, vertical diffusivity profile
5338    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
5339    o added Sadourny discretization of Coriolis
5340      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
5341      - re-enabled use of omega3 (useAbsVorticity)
5342    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
5343      vector-invariant equations
5344      - note: does *NOT* yet use same variable visc. for no-slip BC's.
5345    o recoded the lateral boundary conditions for non-hydrostatic w, this time
5346      hopefully without new bugs
5347      - still to do: biharmonic friction for non-hydrostatic w
5348    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
5349    o regenerated output for global_ocean_ebm (using -ieee)
5350    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
5351      of mom_common/
5352      - simple re-arrangement of instructions within computing loop
5353    checkpoint53d_pre (2004/05/21)
5354    
5355    checkpoint53c_post (2004/05/21)
5356    o new version of coupler for AIM+thSIce and Ocean models
5357     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
5358     - land: change Evaporation of snow
5359     - aim with thSIce: fix bug in snow-precip.
5360    o changes to calc_gw.F
5361     - bug fix for w^2 term near the bottom boundary
5362     - (hopefully) improve the lateral slip boundary condtions for use with
5363        partial/looped cells
5364      - because the bug fix changes two verification experiments anyway (exp5
5365        and plume on slope), change the lateral boundary condition from half slip
5366        to the value of no_slip_sides
5367    o ebm package wasnt quite up to the parallel task. Fixed that.
5368    o Adjoint of EBM package + verification
5369      * TLM OK
5370      * ADM not sufficient accuracy yet (needs further testing)
5371    
5372    checkpoint53b_post (2004/05/14)
5373    o Commiting new energy balance model to repository
5374      * package is pkg/ebm
5375      * verif. is verification/global_ocean_ebm
5376      * references are in ebm_driver.F
5377    C      * X. Wang, P. Stone and J. Marotzke, 1999:
5378    C        Global thermohaline circulation. Part I:
5379    C        Sensitivity to atmospheric moisture transport.
5380    C        J. Climate 12(1), 71-82
5381    C      * X. Wang, P. Stone and J. Marotzke, 1999:
5382    C        Global thermohaline circulation. Part II:
5383    C        Sensitivity with interactive transport.
5384    C        J. Climate 12(1), 83-91
5385    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
5386    C        Destabilization of the thermohaline circulation
5387    C        by atmospheric eddy transports.
5388    C        J. Climate 7(12), 1870-1882
5389    o Will need long integration testing.
5390    checkpoint53b_pre (2004/05/14)
5391    
5392    o created pkg/mom_common in preparation for variable viscosity code
5393    o renamed and split ini_mnc_io
5394    o pkg/land: only liquid water can diffuse or run-off
5395    o AIM using land: soil wetness availability account for snow
5396    o added printMapIncludesZeros to EEPARMS namelist
5397    
5398    checkpoint53a_post (2004/05/11)
5399    o restore TAMC compatiility for exf_constants.h
5400      (no usage of _d in .h)
5401    o Additional storing in KPP in an attempt to fix
5402      TAMC problem with adjoint of KPP code.
5403      (no success...)
5404      Identical code works fine with TAF.
5405    o Fixed verification/natl_box_adjoint experiments.
5406      Initial conditions for Experiments 4 and 5 are now
5407      set to "SEAICE_initialHEFF=0", which is more reasonable,
5408      and hence gives results closer to that of Experiment 2.
5409      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
5410    
5411    checkpoint53 (2004/05/06)
5412    o stable checkpoint with up to date adjoint
5413      TLM tests only run for 1st grdchk at the moment. Its unclear if
5414      this is a code problem or a problem with resetting code for g_
5415      variables that is being autogenerated wrong.
5416      Otherwise:
5417       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
5418       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
5419         are both still in chaos following their security messes.
5420    
5421    checkpoint52n_post (2004/05/06)
5422    o various build (mostly genmake2) changes including:
5423      - ability to build/run more easily within Cygwin and MacOS X
5424      - more complicated Makefiles with a stronger dependence on Gnu Make
5425    o pkg/seaice modifications
5426      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
5427        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
5428        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
5429      - changed proxy for geostrophic velocity and updated
5430        verification/lab_sea/results/* accordingly
5431      - removed ADI dynamic solver from pkg/seaice
5432      - replaced all occurrences of 1/CSTICE or 1/CSUICE
5433        they caused a segmentation fault under certain circumstances
5434      - removed unused field WATR
5435    o bug fix in exf-package:
5436      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
5437         now reflect that.
5438    o small fixes in the cal-package:
5439      - set reference date to first of January for the 'model'-calendar
5440      - failing of cal_CheckDate in cal_FullDate now actually results in a
5441        warning
5442    o small modifications in exf-package to increase flexibility:
5443      - change climtempfreeze from a constant to a runtime parameter that
5444        is specified in data.exf_clim (default = -1.9)
5445      - introduce runtime parameter windstressmax (default = 2.0) that is
5446        specified in data.exf
5447    o fix in pkg/thsice:
5448      - update Evap (Tsf changes) to be consistent with Latent heat flux
5449      - maintain snow precipitation unchanged (even if Tsf >=0).
5450     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
5451    
5452    checkpoint52m_post (2004/04/18)
5453    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
5454      this does not change any of the results, because myIter=0 in swfrac always
5455      lead to jwtype=2 (the default anyway), but the call makes little sense
5456      as a default
5457    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
5458    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
5459      atmospheric model (AIM) to use it ; add a "slab ocean" component.
5460    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
5461    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
5462    o extending useSingleCpuIO option to work with new exch2 I/O format
5463      - old-style, missing-tile I/O is still accessible by defining CPP
5464        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
5465    o monitor package can write to NetCDF files and/or STDOUT
5466    o fix re-definition bug in MNC_GRID_INIT_ALL()
5467    o doc/api_reference added
5468      - a framework for building an API Reference Manual using all
5469        the "protex" comments embedded in the code
5470      - see pkg/generic_advdiff, pkg/mnc for examples
5471    o MNC:
5472      - make myThid the last argument for all subroutines
5473      - new default for the grid files: NO halos
5474      - add useMNC and other run-time flags
5475      - separate per-file-group handling of the unlimited dimension
5476      - early initialization of MNC w/ flags read at the eeboot stage
5477        and lookup tables set in initialize_fixed
5478      - write all MNC output to a freshly-created directory
5479    o thermodynamics sea-ice (thsice) is now tested with testreport.
5480    o test exp. advect_cs: use the standard cs32 grid ; update output.
5481    o Added functionality to grdchk:
5482      pick global i,j,k position (or nearest wet) where to perform check.
5483    
5484    checkpoint52l_post (2004/03/11)
5485    o new land formulation:
5486      a) use ground enthalpy as prognostic variable to ensure exact
5487         energy conservation.
5488      b) account for water temperature and for latent heat of freezing
5489         in all processes (rain, run-off, ground storage)
5490      c) compute surface and ground temperature implicitly.
5491    o aim_v23 modification for new land model:
5492      a) Treat separately land / ocean / sea-ice surface fluxes
5493         to allow implicit computation of land & sea-ice surface temp.
5494      b) add snow precipitation.
5495    checkpoint52l_pre (2004/03/11)
5496    
5497    o fix problem (when 1 tile is empty) in min/max monitor.
5498    o fix bug in timeAve (u,vZetatave in common block)
5499    o no restoring terms under ice for pkg/seaice
5500    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
5501    o bug fix for pkg/seaice pickups
5502    o change MNC call locations and add coordinate attributes
5503    o mask vorticity at the corner ; affects global_ocean.cs output
5504    o fix ini_curvilinear_grid ; test CS experiments with mpi
5505    o aim.5l_cs: modify sea-ice fraction input file ; update output
5506    o exf: Adding simple range check routine for exf fields after read
5507    
5508    checkpoint52k_post (2004/02/23)
5509    o removed top-level directory "diags"
5510      - we migrated these functions to pkg/timeave a long time ago
5511    o fixed bug introduced in pkg/monitor
5512    o accuracy ctrlprec = 32 insuffient for gradient checks using
5513      averaged fields (I/O via cost_averages)
5514      -> use ctrl.h in active_file*.F to control I/O precision.
5515    o paramter list of CALL ADTHE_MAIN_LOOP
5516    o added initial do_the_model_io to ecco
5517    o set all ...Freq to zero after cost_final
5518      taveFreq, dumpFreq, pChkptFreq
5519    o MAIN and ECCO differentiability restored
5520    
5521    checkpoint52j_post (2004/02/18)
5522    o fix nchklev in tamc.h for global_ocean...
5523    o Bringing flow and store directives up-to-date
5524    o Really weird thing!
5525      call do_the_model_io from the_main_loop with parameters
5526      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
5527      TAF places a faulty re-call of initialise_varia
5528      after cost_final call which should not be there!
5529    checkpoint52j_pre (2004/02/03)
5530    
5531    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
5532      error messages
5533    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
5534    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
5535      debug output
5536    o modfied mdsio_writefield.F to handle non-global files under exch2
5537    o update AIM Cubed-Sphere exp (aim.5l_cs):
5538      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
5539    o update AIM Equatorial Channel exp:
5540      use standard aim_v23 pkg and change the SST fields to be more realistic.
5541    o globalFile now works with exch2
5542    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
5543      mon_vort3.F to make exch2 friendly with >1 tile per cube face
5544    o limit timeave output for hi-res integrations
5545    
5546    checkpoint52i_post (2004/01/21)
5547    o removed CPP_EEOPTIONS.h from verification/*/code
5548    o updated the tiling for global_ocean_pressure
5549    checkpoint52i_pre (2004/01/20)
5550    
5551    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
5552      the old pkg/aim).
5553    
5554    checkpoint52h_pre (2004/01/20)
5555    o shortened offending lines in exch2_send_rx?.template
5556    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
5557    o genmake2: add build & execute test for NetCDF code
5558    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
5559      old grid files, moved CPP_EEMACROS.h to pkg/exch2
5560    o added useSingleCPUIO flag to monitor.F and mon_out.F
5561    o added temporary hack for sea-ice dynamics on the cube:
5562      metric terms are ignored and it is assumed that
5563      there is no sea-ice on cube faces 1, 2, 4, and 5.
5564    
5565    checkpoint52f_post (2004/01/09)
5566    o added exch2 cube routines to pkg/exch2
5567    o modified hs94.cs-32x32x5 to use it
5568    o added new grid files to hs94.cs-32x32x5
5569    checkpoint52f_pre (2004/01/07)
5570    
5571    checkpoint52e_post (2004/01/07)
5572    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
5573      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
5574    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
5575      to work with implicit vertical advection and AB ;
5576    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
5577    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
5578     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
5579    checkpoint52e_pre (2004/01/02)
5580    
5581    o fix bug in impldiff when Nr=1 or Nr=2.
5582    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
5583    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
5584    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
5585      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
5586    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
5587    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
5588    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
5589    
5590    checkpoint52d_post (2003/12/16)
5591    o re-tiled many expts to allow comparison in multi-processor mode
5592      - updated output accordingly
5593      - changed hs94.128x64x5 to use intial T from file rather than use the
5594        random number generator
5595    o add infrastructure in model routines for fizhi and gridalt packages
5596    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
5597    o changes to permit hi-res, cubed-sphere, configuration
5598      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
5599      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
5600      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
5601        of surface winds for the cube
5602      (A verification experiment, based on global_ocean.cs32x15, but with
5603       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
5604       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
5605       complete with example surface forcing files and matlab scripts to look
5606       at the output and compare it with that of global_ocean.cs32x15.)
5607    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
5608       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
5609       to conform to the common rule.
5610    o check-in the first version of the coupler + interfaces for multi-components
5611       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
5612       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
5613       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
5614       - ocean and atmos. share the same horizontal grid (no interpolation).
5615       - exchanges between component and coupler is done in forward_step
5616    o new verification experiment, cpl_aim+ocn:
5617       coupled ocean - AIM atmosphere on cs32 grid.
5618    
5619    checkpoint52d_pre (2003/12/06)
5620    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
5621    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
5622    
5623    checkpoint52c_post (2003/11/25)
5624    o Fixing OPTIONS files for use of exf:
5625      - ALLOW_ECCO not needed
5626      - ECCO_CPPOPTIONS.h should not be included from
5627        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
5628        as has been the case in the past
5629      - All cal/exf related options are currently set in
5630        single header file. Should remain so until we
5631        agree on a consistent new policy.
5632    o Removed all CPP options for cal package.
5633      cal has no more CPP options.
5634    o modified STOREs in GAD_ADVECTION
5635    o corrected key comp. for passkey
5636    
5637    checkpoint52b_post (2003/11/23)
5638    o new version: "thsice" of thermodynamic sea-ice pkg:
5639     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
5640     - modify fluxes but do not change theta directly;
5641     - light cleaning of bulk_force pkg (still needed with thsice).
5642     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
5643       + output_thsice.txt to test thsice & bulk_force pkgs.
5644    o put back grid & coriolis monitor output.
5645    checkpoint52b_pre (2003/11/23)
5646    
5647    o call "do_the_model_io" at the beginning (=> dump initial state)
5648    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
5649    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
5650      (need info on NUMBER_OF_PTRACERS)
5651    o missing PTRACERS headers in some routines
5652    o default tamc.h in pkg/autodiff supposed to crash
5653      to ensure proper customization
5654    
5655    checkpoint52a_post (2003/11/17)
5656    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
5657      - moved surfaceTendencyTice from pkg/seaice to main code
5658      - subroutine FREEZE_SURFACE now limits only surface temperature
5659        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
5660        => new output.txt for global_ocean.cs32x15 & global_with_exf
5661      - keep the old version of FREEZE for backward compatibility;
5662        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
5663      - corresponding modifs for TAF directives
5664    o added surface flux output variables to TIMEAVE_STATVARS
5665    o time-averaged output for pkg/ptracers
5666    o fix problem with ECCO-related divided adjoint
5667      snapshot file was missing some ad-variables,
5668      but no warning issued by TAF
5669    
5670    checkpoint52a_pre (2003/11/12)
5671    o some bug fixes for #undef REAL4_IS_SLOW
5672    
5673    checkpoint52 = ecco_c52_e35
5674    o after testing adjoints of checkpoint51u_post
5675    
5676    checkpoint51u_post (2003/11/06)
5677    o this is the post-merge tag of the ecco-branch
5678      (needs another clean checkout and re-testing)
5679    o various natl_box_adjoint configs and results
5680      but no input fields
5681    o obcs adjoint not yet merged!
5682    o adding ECCO global 1x1 and 2x2 degree configs
5683    o updated/extended some store directives for seaice
5684    o pkg/ecco now containes ecco-specific part of cost function
5685    o top level routines the_main_loop, forward_step
5686      supersede those in model/src/
5687      previous input data.cost now in data.ecco
5688      (new namelist ecco_cost_nml)
5689    o in ctrl/ cleaned some cross-dependencies and updated CPP options
5690    
5691    checkpoint51t_post (2003/11/04)
5692    o this is the pre-merge tag of the ecco-branch
5693    
5694    checkpoint51s_post (2003/11/04)
5695    o cleanup: removed various obsolete #define-s
5696    o pkg/grdchk
5697      - renamed 'ph-grd 3' to 'grad-res'
5698      - merged from ecco-branch
5699        (remaining bug fixes for obcs gradient checks)
5700      - additional high-precision output for testreport
5701        (grep for 'precision_grdchk_result')
5702    
5703    checkpoint51r_post (2003/11/03)
5704    o cleaned up or removed CPP_OPTIONS.h files
5705    o updated results for some of the tests to reflect the new
5706      optfiles (-ieee: -O0 instead of -O3)
5707    
5708    checkpoint51q_post (2003/10/30)
5709    o cd_code:
5710      - moved cd_scheme.F -> cd_code_scheme.F
5711      - separate read_checkpoint from cd_code_ini_vars.F
5712      - separated cd_code part from write_checkpoint
5713      - updated AD_SOURCE, generated .flow
5714      - added CD_CODE_VARS.h to the_main_loop
5715      - Moving cd_code specific store dir.s to pkg/cd_code
5716    o ctrl package totally restructured
5717      - pack/unpack now optional and decoupled from
5718        xx_/adxx_ I/O
5719      - ctrl_pack/unpack cleaned
5720        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
5721      - confined inclusion of AD_CONFIG.h to where necessary.
5722    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
5723    
5724    checkpoint51p_post (2003/10/30)
5725    o create initial cd_code package
5726      - WARNING: the initialization of fields within packages
5727        is broken because INI_FIELDS (where READ_CHECKPOINT is
5728        called) is called *before* PACKAGES_INIT_VARIABLES.
5729        This seems to be backwards since
5730        1) its important to initially zero the entire field including
5731           the "halo" region
5732        2) zeroing needs to be done *before* reading pickup info
5733           and the pickup call might or might not happen in any
5734           particular run
5735      - this needs an overhaul for R2
5736    o cleanup verification/*/code/GMREDI_OPTIONS.h
5737    o cleanup testreport
5738    
5739    checkpoint51o_post (2003/10/27)
5740    o bringing AD-related verif's up to date with genmake2
5741      - carbon/
5742      - global_ocean.90x40x15/
5743      - hs.94.1x64x5/
5744      - (front_relax/ )
5745    o (more) consistent directory structure for AD-related verif.'s
5746    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
5747    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
5748    o bug fix in find_alpha.F for MDJWF:
5749      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
5750        change rho -> rho-rhoConst
5751      - replace call find_rho to find_rhonum
5752    o initialisation of rFlx extended to full array (required by TAF)
5753      and shifted to thermodynamics
5754    o removed PTRACERS.h in ptracers routine
5755    o added surfacetendencyPtr to S/R parameter list pracers_forcing
5756    o Correcting initialisations for fVerU, fVerV.
5757    o helping TAF to recognize dependency on kUp for
5758      fVerU, fVerV
5759    o Replacing delZ by delR in pkg/ctrl/
5760    checkpoint51o_pre (2003/10/24)
5761    
5762    o undid all of cp51 pending some cleanups and discussion
5763    o added the [#include "AD_CONFIG.h"] statement to all files that need
5764       it for adjoint/tl #defines
5765     o re-worked the build logic in genmake2 to support AD_CONFIG.h
5766     o removed tools/genmake since it no longer works
5767    
5768    checkpoint51n_post (2003/10/23)
5769    o modifications to make FREEZE flux visible to pkg/kpp
5770      - moved surfaceTendencyTice from pkg/seaice to main code
5771      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
5772      - subroutine FREEZE now limits only surface temperature
5773        (this means new output.txt for global_ocean.90x40x15,
5774         global_ocean.cs32x15, and global_with_exf)
5775    o added surface flux output variables to TIMEAVE_STATVARS
5776    
5777    checkpoint51n_pre (2003/10/23)
5778    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
5779    o added [#include "AD_CONFIG.h"] to all files that use the following
5780      defines:
5781      - ALLOW_ADJOINT_RUN
5782      - ALLOW_TANGENTLINEAR_RUN
5783      - ALLOW_ECCO_OPTIMIZATION
5784    
5785    checkpoint51m_post (2003/10/21)
5786    o incorporating changes to get TAMC/TAF working in genmake2
5787      - added new TAMC/TAF targets to the Makefile
5788      - various cleanups related to package handling
5789      - these changes should have no impact on the forward model
5790    
5791    checkpoint51l_post (2003/10/20)
5792    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
5793     - faster algorithm for cal_addtime.F
5794     - higher precision arithmetic, where needed
5795     - pkg/exf *startdate variables changed from calendar date to
5796       model integration time
5797    
5798    checkpoint51l_pre (2003/10/17)
5799    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
5800    o enable to apply restoring on S & T only in a latitude band.
5801    o update output (external_forcing_surf modif. change truncation errors)
5802       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
5803    
5804    checkpoint51k_post (2003/10/16)
5805    o change default to: useNHMTerms=.FALSE.
5806     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
5807       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
5808     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
5809        exp1, ideal_2D_oce
5810     - change data file of oceanic exp (leave the results unchanged for now)
5811       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
5812    o set gravitySign automatically according to the vertical coordinate used
5813      (and change sign: back to "logical" value: +1 when R increases downward)
5814    o added an include barrier to the default CPP_OPTIONS.h and
5815      removed the #include "PACKAGES_CONFIG.h" from it
5816    o fix a bug in mom_fluxform (from chk51j_post)
5817    
5818    checkpoint51j_post (2003/10/10)
5819    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
5820    o adjusted some flow directives (dynamics, thermodynamics)
5821    o added cubed-sphere case to test cost function
5822    o heckpoint_lev?_directives.h now include
5823      pkg-specific directives, whenever those are enabled.
5824    o Moving pkg-specific flow directives to corresponding pkg
5825      Moving pkg-specific differentiation list to corresponding pkg
5826      Moving pkg-specific checkpoint-lev storing to corresponding pkg
5827      ---> conventions are
5828           - pkg_ad.flow
5829           - pkg_ad_diff.list
5830           - pkg_ad_check_lev?_dir.h
5831    
5832    checkpoint51i_post (2003/10/09)
5833    o merge of the branch-genmake2
5834      - knowingly breaks the older genmake
5835      - automatic generation of all ALLOW_${PKG_NAME} defines
5836      - new testreport supersedes older testscript
5837    o large number of package inclusion and header cleanups
5838    checkpoint51i_pre (2003/10/08)
5839    
5840    o new output for adjoin of global ocean vector invariant
5841    o fix for checkpoint of thermodynamic seaice and bulk_force
5842    o Steph gchem various cleanups
5843    
5844    checkpoint 51h_pre
5845    o fixed some single quotes
5846    o modify gchem pkg to be more versatile
5847    o modifications to clean up dic pkg
5848    o add pkg/cfc
5849    
5850    checkpoint51g_post (2003/10/02)
5851    o provide links for ARPACK and ADM*TLM
5852    o start removing verification/vero/
5853    o update AD-related stuff
5854      (in particular some IF-statements in model/src/ routines)
5855    o adding to verification/global_ocean.90x40x15/ adjoint of
5856      vector invariant setup
5857    
5858    checkpoint51f_post (2003/10/02)
5859    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
5860    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
5861      of tracer Green's fucntions for ocean inversion project.
5862    
5863    checkpoint51f_pre (2003/08/07)
5864    o Added on-the-fly spatial interpolation capability
5865        "USE_EXF_INTERPOLATION" to pkg/exf.
5866      - This is a temporary Cartesian-grid hack until
5867        the super-duper ESMF coupler becomes available.
5868      - See verification/global_with_exf/README for usage example.
5869      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
5870        flags and modified pkg/seaice accordingly.
5871    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
5872        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
5873        non-local transport term.
5874    
5875    checkpoint51e_post (2003/08/03)
5876    o pkg/mom_vecinv:
5877      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
5878      - add time-ave diagnostic of vorticity advection.
5879    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
5880    o atmospheric geopotential: - include water vapor effect;
5881                                - use p^kappa in p* scaling.
5882    o land pkg: read initial state from files.
5883    o AIM : add stratospheric drag in the upper level
5884    
5885    checkpoint51d_post (2003/07/18)
5886    o change function ILNBLNK (=> last non-blank char.) to return zero
5887      (instead of the string length) when the string. char is empty
5888    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
5889    o modif's to restore TAMC compatibility
5890      - avoid "_d" constructs in PARAMETER declarations
5891      - avoid interrupting lines by comment lines
5892    o Use cluster local disks for purely local I/O
5893      vs. globally visible disks needed for ctrl stuff
5894      (merged from ecco-branch)
5895      - new active_file_loc... and mdsio_..._loc routines
5896      - affected packages: autodiff, ctrl, grdchk, mdsio
5897    
5898    checkpoint51c_post (2003/07/08)
5899    o introducing integer flag debugLevel
5900      - debLevZero: suppress all output
5901      - debLevA: standard
5902      - debLevB: equivalent to current debugMode=.TRUE.
5903    o introducing pathname variable mdsioLocalDir for mdsio
5904      that can be specified at runtime
5905      (relevant for cluster I/O to local disk)
5906    `
5907    >>>checkpoint51b_post
5908    adjoint of ptracers
5909    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
5910    o extended state in checkpoint_lev?, etc.
5911    o alternative ctrl/cost with tr1 or ptracer
5912    o new comlev1_bibj_ptracers
5913    o new ptracers.flow
5914    o made ptracers_forcing same as external_forcing_s
5915    o added verification for adjoint with ptracers
5916      - adm. grdchk fail so far
5917      - tlm. grdchk OK
5918      - checked tapelev/comlev recomputations: OK
5919    <<<checkpoint51b_pre
5920    
5921    checkpoint51a_post (2003/06/25)
5922    o added code for biogeochemistry package
5923      - new pkgs: dic, gchem
5924      - new subroutine in ptracers
5925    o modify code for biogeo packages
5926      - in model/src and pkg/ptracers
5927    
5928    checkpoint51 (2003/06/24)
5929    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
5930      - autodiff, ctrl, exf, grdchk, seaice
5931      kept separate packages
5932      - cost, ecco, obcs
5933    o updating verification/internal_wave, verification/lab_sea
5934      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
5935    
5936    checkpoint50i_post (2003/06/23)
5937    o Preparing next differentiable checkpoint and sync
5938      of MAIN vs. ecco-branch
5939      - 1st step: this one is differentiable
5940      - 2nd step: next(! not this) checkpoint will have updated packages
5941                  from ecco-branch)
5942    
5943    checkpoint50h_post (2003/06/20)
5944    o new package "land": provide surface BC for AIM.
5945    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
5946    o AIM: use true log-P extrapolation for near surface temp (= as in
5947        F.Molteni paper) ; update aim.5l_cs output.
5948    o New variable in PARM03 for more flexible pickups
5949    o somewhat cleaned package initialisation sequence for
5950      ctrl/ cost/ ecco/ in packages_... routines
5951    
5952    checkpoint50g_post (2003/05/23)
5953    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
5954      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
5955      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
5956        made the default because of faster convergence than ADI
5957    
5958    checkpoint50f_post (2003/05/23)
5959    o exf totally restructured
5960      - replaced all exf_set_ routines by one generic exf_set_gen.F
5961        and made sure it's still differentiable
5962      - split exf_getffields.F into new exf_bulkformulae.F
5963      - exf_inscal_/exf_outscal_ suffixes consistent with field names
5964      - updated adjoint/makefile and relevant verif. accordingly
5965    
5966    checkpoint50f_pre (2003/05/23)
5967     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
5968          + change Evap over land. (update aim.5l_cs output)
5969     o added missing .cvsignores and made uniform across expts
5970     o changed configuration of tidal_basin_2d expt
5971     o added pkg/debug functions for tracing code in fatal crashes
5972     o tidied pkg/monitor to use MONITOR_OPTIONS.h
5973     o new fn in pkg/monitor to stop model if solution grows too big
5974     o removed lots of single quotes from comments
5975    
5976    checkpoint50e_post (2003/05/14)
5977    o make KPP work with PTRACERS
5978     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
5979       nearly a copy of kpp_transport_s
5980     - there is no analogue to SurfaceTendencyS, so I have to use
5981       gPtr(of the surface layer) instead
5982    o add a new platform SunFire+mpi (SunFire 15000) to genmake
5983    checkpoint50e_pre (2003/05/13)
5984    
5985    checkpoint50d_post (2003/05/13)
5986    o change kpp output from multiple-record state files to single-record state
5987      files analogous to write_state.F
5988    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
5989      analogous to the cg2d-related output.
5990    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
5991      so that writing to internal file fn (with length 512) fails.
5992    checkpoint50d_pre (2003/05/12)
5993    
5994    checkpoint50c_post (2003/05/12)
5995    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
5996    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
5997    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
5998    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
5999    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
6000    
6001    checkpoint50c_pre (2003/04/30)
6002    Merging from release1_p13:
6003    o bug fix for pkg/seaice dynamic solver
6004    o Added SEAICE_initialHEFF to pkg/seaice
6005    
6006    checkpoint50b_post (2003/04/17)
6007    o store u*,v* in gU,V instead of in guNm1,gvNm1
6008    o in order to put the momForcing out of the Adams-Bashforth:
6009      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
6010      to timestep.F
6011    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
6012    o re-generate output for highly sensitive test-exp:
6013       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
6014    
6015    checkpoint50b_pre (2003/04/17)
6016    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
6017    o corrected CPP option mismatch in exf_Bulk... functions for case
6018      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
6019    
6020    checkpoint50a_post (2003/03/21)
6021    o Bug fix for merging between c50 and KPP.
6022      ikey was passed from thermodynamics to kpp_calc via
6023      common block rather than being recomputed in kpp_calc,
6024      in contradiction with new key itdkey.
6025      New key ikppkey created, and tamc.h headers updated.
6026    
6027    checkpoint50 (2003/03/08)
6028    - 2nd step of merge with ecco-branch:
6029      merge changes in ecco-branch back into main trunk
6030    - bug fix in find_alpha
6031    - more storing in gmredi_calc_tensor.F, kpp_routines.F
6032    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
6033    - merged some sliced AD support routines
6034    
6035    checkpoint49 (2003/03/06)
6036    merged from ecco-branch:
6037    o exf:
6038      - Enable initialisation of forcing fields to constant
6039        (runtime) values.
6040      - in exf_getffields.F
6041        Reduce i-/j-loop to interior domain, discarding overlaps.
6042        That also fixes wrong TAF-key computations for key_1, key_2
6043        with bulf formulae.
6044      - exf_init.F modify #ifdef for exf_init_evap
6045      - exf_getffieldrec.F, ctrl_getrec.F
6046        The following INT-usages are not safe:
6047          fldsecs  = int(fldsecs/fldperiod)*fldperiod
6048          fldcount = int(fldsecs/fldperiod) + 1
6049        and were modified.
6050    o autodiff: checkpoint_lev...
6051      - updated storing for bulk formulae (some arrays were missing)
6052      - added state for seaice package
6053      - synchronized with main branch
6054    o DIVA:
6055      Modif.s in
6056      - the_main_loop.F
6057      - the_model_main.F
6058      and added cost_final_restore.F cost_final_store.F
6059      o With these changes, it is possible to fully separate
6060        the first forward run to compute the cost function (mdthe_main_loop)
6061        and adjoint runs over individual DIVA intervals (adthe_main_loop)
6062        into separate model executions.
6063        This enables better tuning of DIVA to given queue sizes.
6064      o Loss of cost function value in consecutive DIVA runs is
6065        fixed by storing to 'costfinal' file.
6066      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
6067        beginning/end of adjoint integration is accounted for.
6068      The current changes apply to TAF-1.4.26.
6069      TAF has one remaining bug, requiring one manual change
6070      (see MITgcm manual).
6071    o cal: synchronized between MAIN and ecco-branch
6072    
6073    checkpoint48i_post (2003/03/05)
6074    o Changes to restore differentiability of code w.r.t. previous tag
6075      (mostly adding new routines to make list and replacing
6076      pressure by totPhiHyd).
6077    o Updated and merged grdchk package
6078      - has both ADM and TLM checks
6079      - works for single- and multi-proc.
6080      - output cleaned
6081      - worked successfully for parallel DIVA
6082    o genmake:
6083      - Adding -platform=SP4
6084      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
6085    o Modif. for DIVA:
6086      ctrl_unpack should not be called in intermediate DIVA interval.
6087      (similar thing would apply for active files such as
6088      tbar, sbar, psbar, which should not be reinitialised;
6089      only relevant for ecco-branch)
6090    
6091    checkpoint48h_post (2003/02/28)
6092    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
6093    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
6094    o Added SEAICE_initialHEFF to pkg/seaice
6095    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
6096    
6097    checkpoint48g_post (2003/02/18)
6098    --- EOS:
6099    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
6100      store total Potential in totPhyHyd for diagnostics & EOS.
6101    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
6102    --- Pressure/geopotential gradient:
6103    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
6104    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
6105      ( changes results of global_ocean_pressure )
6106    o NLFS + z-coord.: add eta*Rho' contribution.
6107    o accurate phiHyd when using interface-W at the middle between 2 centers
6108     ( changes results of ideal_2D_oce )
6109    o includes r* 2nd term in potential gradient.
6110    
6111    checkpoint48f_post (2003/02/18)
6112    Merging from release1_p12:
6113    o Modifications for using pkg/exf with pkg/seaice
6114      - improved description of the various forcing configurations
6115      - added basic radiation bulk formulae to pkg/exf
6116      - units/sign fix for evap computation in exf_getffields.F
6117      - updated verification/global_with_exf/results/output.txt
6118    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
6119      (SBO) core products, including oceanic mass, center-of-mass,
6120      angular, and bottom pressure (see pkg/sbo/README.sbo).
6121    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
6122      to avoid negative values in shallow regions.
6123      - updated verification/natl_box/results/output.txt
6124      - updated verification/lab_sea/results/output.txt
6125    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
6126    o Added useSingleCpuIO option (see PARAMS.h).
6127    o Updated useSingleCpuIO option in mdsio_writefield.F to
6128      work with multi-field files, e.g., for single-file pickup.
6129    o pkg/seaice:
6130      - bug fix in growth.F: QNET for no shortwave case
6131      - added HeffFile for specifying initial sea-ice thickness
6132      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
6133    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
6134      kpp_transport_t.F, forward_step.F, and the_main_loop.F
6135    o pkg/seaice:
6136      - adjoint-friendly modifications
6137      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
6138    
6139    checkpoint48e_post (2003/02/12)
6140    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
6141    o dynamics: change definition of computational domain & adapt mom_fluxform
6142      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
6143    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
6144        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
6145        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
6146        global_ocean.90x40x15 global_with_exf global_ocean_pressure
6147        inverted_barometer solid-body.cs-32x32x1
6148      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
6149    
6150    checkpoint48d_post (2003/02/09)
6151    o in preparation for r*:
6152     a) use pre-computed gradient of hydrostatic potential:
6153        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
6154     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
6155        => affects results of glob_oce_pressure (different truncation error)  
6156      update output.txt of ideal_2D_oce & global_ocean_pressure
6157    
6158    checkpoint48d_pre (2003/02/08)
6159    o in preparation for r*:
6160      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
6161      pass the 2 comp. of the grad. as arguments to momentum S/R.
6162      but for the moment, only used if it does not change the results.
6163    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
6164    
6165    checkpoint48c_post (2003/02/06)
6166    Modifications in treatment of initial flux forcing controls
6167    to avoid extra storing of flux fields.
6168    
6169    checkpoint48c_pre (2003/01/21)
6170    o Added tidal_basin_2d experiment (currently 1D!)
6171    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
6172    
6173    checkpoint48b_post (2003/01/27)
6174    o r* coordinate added in #ifdef NONLIN_FRSURF block.
6175     (modification to pressure gradient not yet implemented)
6176    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
6177      (for U & V) that are used for vertical advection of momentum.
6178    
6179    checkpoint48a_post (2003/01/24)
6180    o In preparation for r*, use temp. array to compute vertical transport
6181       in flux-form momentum pkg. => change results of few test-exp.
6182      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
6183                        lab_sea, natl_box & plume_on_slope
6184    
6185    checkpoint48 (2003/01/23)
6186    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
6187    
6188    checkpoint47j_post (2003/01/21)
6189    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
6190    o moved adexch from forward_step to addummy_in_stepping
6191    o added exch in ctrl_map_...
6192    o aveFreq.=0. at end of cost_final to avoid overwrite in
6193      reverse checkpointing loop
6194    o Yet more changes in gmredi:
6195      * adgmredi_calc_tensor
6196        avoiding all recomputation of gmredi_slope_limit
6197      * adgmredi_x/y/rtransport
6198        added flag for excessive storing to avoid recomp. of
6199        u/v/rtans, dTdx/y/z
6200        -> this is not really necessary and very memory-consuming
6201      * adgmredi_slope_psi:
6202        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
6203      * gmredi_slope_limit
6204        re-activated full calculation of taperfct for case 'ac02'
6205    o updating verification/ adjoints of carbon, global_ocean.90x40x15
6206    
6207    checkpoint47i_post (2003/01/13)
6208    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
6209    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
6210      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
6211    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
6212    o gmredi: fix few bugs.
6213    
6214    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
6215    This will be a good checkpoint to plug into the ecco-branch.
6216    o few modif.'s to get latest version adjointed
6217      (mainly kick out code in ini_linear_phisurf)
6218    o modif's to run adjoint with exactConserv
6219    o case GM_BOLUS_ADVEC should be cleaned
6220      S/R gmredi_slope_psi should be cleaned
6221    o verification/carbon now has exactConserv=.TRUE.
6222    
6223    checkpoint47g_post (2003/01/10)
6224    o time-average AIM output: becomes independent from statvars time-average
6225      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
6226    o After TAF bug fix:
6227      Tested adjoint of gmredi package.
6228      Tests were done with checkpoint47 rather than with latest
6229      checkpoint47f_post since the latter is broken for the adjoint
6230      verification/carbon/ contains both ADM and TLM gradient checks.
6231    Here they are, before they get changed/lost/stolen.
6232    Mostly modif.'s to fix numerical sensitivities.
6233    Gradient checks OK for
6234    - GM_taper_scheme:
6235      * clipping
6236      * ac02
6237      * linear
6238      * glw91
6239      * dm95
6240      * ldd97
6241    - GMREDI_OPTIONS:
6242      * GM_VISBECK_VARIABLE_K
6243      * GM_NON_UNITY_DIAGONAL
6244      * GM_EXTRA_DIAGONAL
6245      * GM_BOLUS_ADVEC
6246    in conjunction with data.gmredi parameters to be checked in
6247    in a few minutes under verification/carbon/code/
6248    
6249    checkpoint47f_post (2002/12/28)
6250    Merging from release1_p10:
6251    o modifications for using pkg/exf with pkg/seaice
6252      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
6253        and SEAICE_EXTERNAL_FLUXES
6254      - pkg/exf CPP options EXF_READ_EVAP and
6255        EXF_NO_BULK_COMPUTATIONS
6256      - usage examples are Experiments 8 and 9 in
6257        verification/lab_sea/README
6258      - verification/lab_sea default experiment now uses
6259        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
6260    
6261    checkpoint47e_post (2002/12/27)
6262    o created a tag prior to creating a branch
6263    
6264    checkpoint47d_post (2002/12/16)
6265    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
6266      at the bottom boundary had an erroneous half slip boundary condition
6267    o added bottom drag and no slip boundary condition capabilities to
6268      oceanic pressure coordinates code
6269    o added new verification experiment global_ocean_pressure, this experiment is
6270      also described in the tutorial section of the manual
6271    checkpoint47d_pre (2002/12/16)
6272    
6273    checkpoint47c_post (2002/12/16)
6274    o Added a verification experiment for a global cubed-sphere ocean run
6275      -  verification/global_ocean.cubed32x32x30
6276      -  uses pkg/therm_seaice and pkg/bulk_forcing
6277    
6278    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
6279    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
6280      when using P-coordinate; only implemented for atmospheric config.
6281    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
6282      NOTES: requires option NONLIN_FRSURF to be "#define".
6283    o update advect_xz/results/output.txt (left from checkpoint44g_post)
6284    
6285    checkpoint47b_post (2002/12/05)
6286    Merging from release1_p9:
6287    o pkg/seaice
6288      - removed GOTO's and added taf directives
6289      - double precision constants to reduce the g77 (Linux)
6290        to F77 (SGI) differences reported in release1_p8
6291    o tools/genmake
6292      - added SGI options
6293    o verification/testscript
6294      - updated to that of checkpoint47a_post
6295    o verification/global_ocean.90x40x15/input/eedata
6296      - modified for SGI f77 compatibility
6297    o verification/lab_sea
6298      - added description of sea-ice model
6299      - added missing matlab routines
6300      - added test of thermodynamics parallelization
6301    
6302    checkpoint47a_post (2002/11/23)
6303    o new pkg: aim_v23
6304     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
6305       for now, keep the same surface forcing as before.
6306     - Part-Cell implemented into AIM; check that Heat & Water are conserved
6307     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
6308     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
6309    o add diagnostic of surface correction term in monitor output
6310    
6311    o bulk_force and therm_seaice
6312    - Two packages:  bulk_force (Bulk forcing)
6313      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
6314    - Earlier integration from Stephaine Dutkiewicz
6315      and Patrick Heimbach.
6316    - Two ifdef statements for compile time,
6317       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
6318    
6319    checkpoint47 (2002/11/15)
6320    differentiable version of checkpoint46n_post
6321    o bug fix in quasihydrostaticterms
6322    o * "clean" adjoint code (in terms of extensive recomputations)
6323        can now be obtained for all GMREDI options (i.e. for
6324        - GM_VISBECK_VARIABLE_K
6325        - GM_NON_UNITY_DIAGONAL
6326        - GM_EXTRA_DIAGONAL
6327        - GM_BOLUS_ADVEC )
6328      * However, wrong gradient check problem remains unsolved.
6329      * New CPP options have been introduced for different
6330        tapering schemes
6331    o external_fields_load now part of differentiation list
6332    o pressure needs multiple storing;
6333      would be nice to have store_pressure at beginning or
6334      end of forward_step, e.g. by having phiHyd global (5-dim.)
6335      (NB: pressure is needed for certain cases in find_rho,
6336      which is also invoked through convective_adjustment).
6337    o recomputations in find_rho for cases
6338     'JMD95'/'UNESCO' or 'MDJWF' are OK.
6339    o #define ATMOSPHERIC_LOADING should be differentiable
6340    o ini_forcing shifted to begining of initialise_varia
6341    o Incorporating QNVS line search routines into MITgcm
6342      (this is separate code, and therefore not under pkg)
6343      lsopt/, optim/
6344    o Updated verification/carbon/
6345      - #define GM_VISBECK_VARIABLE_K
6346      - GM_taper_scheme    = 'ldd97'    
6347    
6348    checkpoint46n_post (2002/11/12)
6349    Merging from release1_p8:
6350    o verification/natl_box:
6351      updating new external_fields_load routine
6352    o New package: pkg/seaice
6353      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
6354      The sea-ice code is based on Hibler (1979-1980).
6355      Two sea-ice dynamic solvers, ADI and LSR, are included.
6356      In addition to computing prognostic sea-ice variables and diagnosing
6357      the forcing/external data fields that drive the ocean model,
6358      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
6359      The implied surface heat flux is then stored in variable
6360      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
6361      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
6362      non-local transport term.  Because this call precedes model
6363      thermodynamics, temperature under sea-ice may not be "exactly" at
6364      the freezing point by the time theta is dumped or time-averaged.
6365      N.B.: fairly large differences in accuracy occur across
6366            different platforms/compilers; comparison between
6367            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
6368            generated output gives:
6369       T           S           U           V
6370      C D M    c        m  s        m  s        m  s        m  s
6371      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
6372      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
6373      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
6374    
6375      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
6376    o GAD:
6377      - generated new common blocks to account for call of
6378        same gad routines with differing traceridentities
6379        (needed to modify tracerIdentity indices in GAD.h)
6380      - generated separate common blocks for case useCubedSphereExchange
6381        (Department of Futurology)
6382      - parameter lists to gmredi_?transport: added tracerIdentity
6383      - added new key indices to tamc.h
6384    o external_fields_load:
6385      - added this routine to TAF list
6386      - needed to make some common blocks global and additional storing
6387        along the same lines as exf package (checkpoint_lev?_directives.h)
6388    o exf:
6389      updated external forcing package
6390      - bug fixes carried over from ecco-branch
6391        (missing OBCS_OPTIONS.h in two routines)
6392      - enable easy to use "no forcing".
6393      - added exf I/O for atmospheric loading
6394      - added exf I/O for runoff data
6395      - transfered scaling between exf <-> MITgcm to exf namelist
6396    o Adding new verification experiment global_with_exf.
6397      This verification experiment is almost identical to the
6398      global_ocean.90x40x15 experiment, except that it uses
6399      the exf (and cal) package instead of the
6400      external_fields_load routine (cf README file).
6401    
6402    checkpoint46m_post (2002/11/07)
6403    o modified testscript to return -- when there are no lines of "%MON" output
6404    o added new flag "quasiHydrostatic" for QH mode
6405      and new routine quasihydrostaticterms()
6406    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
6407      New routine: mom_u_coriolis_nh()
6408    o fixed sign of non-hydrostatic metric terms in u and v equations.
6409      Depend on correct sign of gravitySign.
6410    o added work.pc* to .cvsignore in aim directories using ifc
6411    o introduced flag for controllin non-hydrostatic metric terms
6412    o removed gravitySign from PARM04
6413    o switched to g77/ifc from pgf77 in aim experiments
6414    
6415    checkpoint46l_post (2002/11/01)
6416    o made convective adjustment work with pressure coordinates:
6417     - changed the direction of k-loop in convective_adjustment.F for the
6418       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
6419     - adjusted the reference pressure k-index in convective_adjustment.F
6420     - adjusted the convection condition in convect.F (in analogy to
6421       calc_ivdc.F)
6422     - convective_adjustment no longer computes anything on the halos
6423     - removed the warnings about negative salinity from find_rho.F and
6424       find_alpha.F; instead the new routine look_for_neg_salinity, called
6425       at the beginning of find_rho, find_alpha, and find_beta, does a
6426       check of the entire slice, if CPP-option
6427       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
6428    checkpoint46l_pre (2002/10/23)
6429    
6430    checkpoint46k_post (2002/10/23)
6431    o fixed the verification/global_ocean.90x40x15 experiment:
6432     - new bathymetry (the world according to A., JMC, and M.)
6433     - new initial fields and forcing fields (*.bin files)
6434     - new POLY3.COEFFS (for the next release one should switch to a full
6435       equation of state: JMD95P or MDJWF)
6436     - fixed several errors and redundancies in the data file
6437     - experiment uses looped cells
6438     - added matlab directory with diagnostic scripts for plotting of output
6439    
6440    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
6441     - read AIM physics parameters from a file (data.aimphys)
6442     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
6443    
6444    checkpoint46j_post (2002/10/07)
6445    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
6446    o move wVel computation at the end of the time step, in S/R integr_continuity
6447    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
6448    o update timeave pkg for wVel diagnostic.
6449    checkpoint46j_pre (2002/09/27)
6450    
6451    checkpoint46i_post (2002/09/25)
6452    o Clean up AIM package (and keep the results unchanged):
6453      include CPP_OPTION and use IMPLICT NONE in all routines ;
6454      declare all the variables _RL ; use _d 0 for all numerical constants.
6455      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
6456    
6457    checkpoint46h_post (2002/09/25)
6458    o cleaned up the use of rhoNil and rhoConst.
6459      - rhoNil should only appear in the LINEAR equation of state, everywhere
6460        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
6461        and the dynamical equations are all divided by rhoConst
6462    o introduced new parameter rhoConstFresh, a reference density of fresh
6463      water, to remove the fresh water flux's dependence on rhoNil. The default
6464      value is 999.8 kg/m^3
6465    o cleanup up external_forcing.F and external_forcing_surf.F
6466      - can now be used by both OCEANIC and OCEANICP
6467    checkpoint46h_pre (2002/09/18)
6468    
6469     Added code to convert surface volume flux (fresh water) into
6470     a mass flux when using P coordinates in the ocean (OCEANICP).
6471     Note: It assumes you have set rho0=rhoConst=density of fresh water.
6472    
6473    checkpoint46g_post (2002/09/18)
6474    o Include a new diagnostic variable phiHydLow for the ocean model
6475      - in z-coordinates, it is the bottom pressure anomaly
6476      - in p-coordinates, it is the sea surface elevation
6477      - in both cases, these variable have global drift, reflecting the mass
6478        drift in z-coordinates and the volume drift in p-coordinates
6479      - included time averaging for phiHydLow, be aware of the drift!
6480    o depth-dependent computation of Bo_surf for pressure coordinates
6481      in the ocean (buoyancyRelation='OCEANICP')
6482      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
6483        Theta, Salinity, and Pressure in the parameter list. This routine is
6484        presently contained in find_rho.F. This routine does not give the
6485        correct density for 'POLY3', which would be a z-dependent reference
6486        density.
6487    o cleaned up find_rho
6488      - removed obsolete 'eqn' from the parameter list.
6489    o added two new verification experiments: gop and goz
6490      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
6491    checkpoint46g_pre (2002/09/16)
6492    
6493    checkpoint46f_post (2002/09/16)
6494    o Enable tangent linear (forward mode) gradient checks:
6495      - extended active file handling to g_... files
6496      - added TANGENT_SIMULATION to theSimulationMode
6497      - extended grdchk package accordingly
6498    o added tangent linear setup in verification/carbon/code_ftl
6499    o added adjoint setup in verification/front_relax/code_ad
6500    
6501    checkpoint46e_post (2002/09/05)
6502    o Added new equation of state -> MDJWF
6503      - EOS of McDougall et al., 2002, JAOT, submitted
6504      - caveat: the equation of state is only valid for a smaller (more
6505        realistic?) range of values than JMD95P/Z and UNESCO
6506      - added masks to the calculation of pressure in store_pressure
6507      - added more check values for density in check_eos (ini_eos.F), some of
6508        the old check values are out of the range of the MDJWF-eos, so don't
6509        expect perfect matches for those
6510    checkpoint46e_pre (2002/08/19)
6511    
6512    checkpoint46d_post (2002/08/19)
6513    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
6514      'OCEANICP', also initialised field pressure correctly in ini_eos in the
6515      case of pressure coordinates. eosType='JMD95Z' in
6516      combination with buoyancyRelation='OCEANICP' now causes an error.
6517    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
6518      in find_alpha/beta.
6519    checkpoint46d_pre (2002/08/15)
6520    
6521    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
6522      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
6523    
6524    checkpoint46c_post (2002/08/15)
6525    o Changes necessary for ocean in p-coordinates
6526     -  Added new buoyancy relation = 'OCEANICP'
6527     -  Added new parameters = gravitySign (this used to be contained inside
6528        the factor dRdZ which I added when we first switched to R coordinates).
6529     X GM/Redi is not compatible (yet)
6530     X bottom drag and no-slip need to be debugged.
6531    checkpoint46c_pre (2002/08/07)
6532    
6533    checkpoint46b_post (2002/08/07)
6534    o Added new equation of state -> JMD95Z and JMD95P
6535      - EOS of Jackett and McDougall, 1995, JAOT
6536      - moved all EOS parameters into EOS.h
6537      - new routines ini_eos.F, store_pressure.F
6538    o Added UNESCO EOS, but not recommended because it requires
6539      in-situ temperature (see JMD95)
6540    o Modified formatting for knudsen2.f in utils/knudsen2 and added
6541      unesco.f to be used with POLY3
6542    checkpoint46b_pre (2002/07/31)
6543    
6544    checkpoint46a_post (2002/07/31)
6545    o Added (atmospheric) pressure loading
6546      - new field in FFIELDS.h, etc...
6547      - new cpp flag ATMOSPHERIC_LOADING
6548    o Changed hFacC to _hFacC in calc_phi_hyd.F
6549    o Added SHORTWAVE_HEATING to some files for consistency
6550    checkpoint46a_pre (2002/07/13)
6551    
6552    checkpoint46 (2002/07/13)
6553    further merges from release1_p5
6554    o new ctrl package
6555      - adopted from ECCO environment to enable optimization
6556      - added Eliassen Palm fluxes to controls
6557    o added Eliassen Palm flux controls to gradient check package
6558    o cost package
6559      - Compatible with new ctrl package
6560      - added Eliassen Palm cost hooks
6561      - modif's of existing cost functions
6562    o Adjoint-related bug fixes in kpp:
6563      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
6564      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
6565    o autodiff package
6566      - flow directives:
6567        + new for S/R do_the_model_io
6568        + enhanced for S/R checkpoint
6569        + new gmredi.flow
6570      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
6571        disable adcommon.h/g_common.h by default.
6572      - fixed problem for adjoint of global_max
6573    o modified verification/carbon/
6574    o New setup for adjoint of global_ocean
6575    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
6576    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
6577    o incorporated hooks for sponge layer code (external_forcing.F)
6578    
6579    checkpoint45d_post (2002/07/12)
6580    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
6581    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
6582      (affects plume_on_slope "cg2d" output)
6583    o add new parameter deltaTfreesurf for free-surface time stepping
6584    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
6585    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
6586    o change phiMin in exp1 (to agree with documentation)
6587    o add new flags:
6588     - T,S forcing inside/outside Adams-Bashforth
6589     - turn off temp,salt advection and/or forcing
6590     - for each tracer, define internal flag for multiDimAdvection & A-B
6591    o monitor: change definition of KE to check conservation of Energy
6592    
6593    checkpoint45c_post (2002/05/30)
6594    o Removed f90 comments ("!")
6595    o Modified initialisations to enable exf package for MITgcm
6596      (without invoking ECCO_PACKAGE).
6597    o modifications to gradient check package (Martin Losch)
6598      - enable centered differences
6599      - modified format of standard output
6600    
6601    checkpoint45b_post (2002/05/30)
6602    o cleaned exchange calls in cg2d
6603    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
6604    o included CPP option SINGLE_LAYER_MODE in thermodynamics
6605      to configure barotropic setup (Martin Losch)
6606    o moved some initialisations within bi,bj loop in dynamics
6607      (TAF flow dependency)
6608    o in initialise_varia, moved call packages_init_variables
6609      before convective_adjustment_init
6610      (corresponding adjustment of TAF tape initialisation).
6611    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
6612    
6613    checkpoint45a_post (2002/05/01)
6614    o compute Rho over the whole domain (extend iMin,jMin indices)
6615    o specific exchange for X-slice domain (case Ny=1)
6616    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
6617    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
6618    
6619    checkpoint44h_post = checkpoint45
6620    o Fix to restore differentiability:
6621      place at which packages_init_variables is called in
6622      initialise_varia is crucial for reverse control flow.
6623    o modifications in GMRedi to enable stable adjoint
6624      (corresponding modif's in thermodynamics, dynamics)
6625    o added missing hook for sponge layer code in external_forcing
6626    o modified test cost functions
6627    o storing in gad_advection (plus removal of write(0,*)!
6628    o missing headers TR1.h added in convective_adjustment routines
6629    o errorMessageUnit set non-equal zero in eeboot
6630      (conflict on some platforms, e.g. IBM SP3)
6631    o modified carbon verif.
6632    
6633    checkpoint44h_pre (2002/03/14)
6634    o vertical grid option: allow to put the Interface at the middle between
6635      2 cell-centers ; replace delZ in pkg/kpp by drF.
6636    o GM Advective form: Tracers are advected using the residual transport (=
6637      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
6638    
6639    checkpoint44g_post (2002/03/05)
6640    o fix surface correction term in multiDimAdvection (affects plume_on_slope
6641      results) ; ifdef missing in thermodynamics.F
6642    
6643    checkpoint44f_pre,checkpoint44f_post
6644    o added PTRACERS package
6645      This allows an arbitrary number of passive tracers to be integrated
6646      forward simultaneously with the dynamicaly model.
6647      + Implemented so far:
6648        - basic forward algorithm (time-stepping, advection, diffusion, convection)
6649        - I/O and checkpointing
6650        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
6651      + Not implemented so far:
6652        - KPP
6653        - OBCS
6654      + No specific example supplied (yet) but global_ocean.90x40x15 has the
6655        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
6656        line in data.pkg.
6657      + This package is disabled by default since it increases storage.
6658    
6659    
6660    o testscript: added -cleanup option
6661    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
6662                 b) enable to filter 2D fields.
6663    
6664    checkpoint44e_pre,post
6665    o re-wrote convective adjustment to use pre-calculated weights
6666      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
6667      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
6668      Original calls to convect() still in place.
6669    
6670    chkpt44d_pre,post
6671    o added missing EXCLUDE_MONITOR flags
6672    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
6673      (incompatible typ in MIN/MAX expressions caused problems
6674      on IBM SP3)
6675    o in genmake added variable MAKEDEPEND
6676      plus resetting for case SunOS
6677    o added timer_stats.c routine for IBM SP3
6678    o removed variables in dynamics
6679    !!! I forgot to create tag chkpt44d_pre !!!
6680    !!! But chkpt44d_pre = chkpt44c_post    !!!
6681    
6682    o real fresh water flux implemented with non-linear free-surface.
6683    
6684    chkpt44c_pre,post
6685    o few fix (mask in shap_s2, EmPmR in external_field_load,
6686      USE_NATURAL_BCS in solve_for_P);
6687    o add arguments myIter & myTime to S/R obcs_calc & solve_for_P
6688    
6689    checkpoint44b_pre/_post
6690    o merge of relevant stuff from the ecco-branch:
6691      - genmake: removed $S64 overwrite for case SunOS
6692      - pkg/exf: update and corrections for field swapping and obcs
6693      - pkg/ecco: parameter lists for the_model_main, the_main_loop
6694                  harmonized between ECCO and MITgcm
6695      - pkg/autodiff: added flow directives for obcs, mdsio_gl_slice
6696                      updated checkpointing_lev... lists for obcs
6697      - model/src: minor changes in forward_step, plot_field
6698                   added directive for divided adjoint in the_main_loop
6699      - pkg/mdsio: added mdsio_gl_slice
6700    
6701    o check parameters & config (chkpt44a_pre,post)
6702    o OBC and NonLin_FrSurf.
6703    
6704    checkpoint44 (2002/01/18)
6705    o fix bug in mom_vi_del2uv
6706    o select when filters are applied ; add options to zonal_filter (data.zonfilt)
6707    o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
6708    o update AIM experiments (NCEP input files)
6709    o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
6710    o added some stuff for AD
6711    
6712    checkpoint43 (2001/09/28)
6713    o added two new advection tests
6714    o added global 4x4 degree ocean test
6715    o added test of H&S94 with free surface on cube
6716    o some final mods for gradient check, adjoint,...
6717    
6718    checkpoint42 (2001/09/27)
6719      Fixed AD-related problems:
6720    o Store directives up-to-date with re-arranged Adams-Bashforth
6721      (mainly thermodynamics.F)
6722    o New store directives for multi-dim. advection schemes
6723      * new CPP flag ALLOW_MULTI_DIM_ADVECTION
6724      * new common block and key passkey
6725      (mainly gad_advection.F)
6726    o Modified store directives for split of dynamics/thermodynamics
6727      for the case ALLOW_KPP
6728    o Cleaned argument list for timestep_tracer.F
6729    
6730    checkpoint41 (2001/09/27)
6731    o re-formatted/added comments in prologues of key subroutines
6732      to work with protex
6733    
6734    checkpoint40 (2001/09/27)
6735    o moved calc_gs, calc_gt and calc_tr1 back to model/src
6736    o added FLT (floats) package from Arne along with demo. experiment
6737    o re-arranged Adams-Bashforth scheme for tracers to allow easier
6738      implementation of forward-in-time forcing terms
6739    o more mods for non-linear free-surface including new variable
6740    o modified multi-dim method to work on cube
6741    o bug fix in KPP (from DM)
6742    
6743    checkpoint40pre9 (2001/09/27)
6744    o added DST advection schemes
6745    o fix MPI bug on SGI's
6746    o modifications for non-linear free-surface
6747    o fixed conditionals for fixed flow/passive tracer only mode
6748    o added tension/strain form of stress tensor
6749    o changes to commenting of arguments for TAF/TAMC
6750    o added/updated many matlab scripts
6751    o added multi-dimensional advection method for tracers
6752      
6753    checkpoint40pre8 (2001/09/05)
6754    o new package rw/
6755      Added method for dumping intermediate local arrays:
6756      mdsio_writetile - same as mdsio_writefield except works from inside
6757                        bi,bj loop
6758      mdsio_writelocal - same as mdsio_writetile except works for local
6759                         arrays
6760      write_local_r? - higher-level wrapper for mdsio_writelocal
6761      Controlled by diagFreq. Defaults to zero (ie. no dumps)
6762      Example given at end of mom_vecinv.F that dumps some local arrays.
6763    o replaced calc_mom_rhs.F by mom_fluxform.F/mom_vecinc.F to
6764      control flux-form versus vector invariant code.
6765      Switch is runtime flag vectorInvariantMomentum (defaults to false)
6766      or genmake -DISABLE ...
6767    o TAMC-related update to cope with mom_fluxform.F/mom_vecinc.F
6768      (additional storing is now needed for case vecinv;
6769      currently nothing implemented to switch this storing off
6770      in case fluxform is used since no CPP flag available).
6771    
6772    checkpoint40pre7 (2001/08/14)
6773    o bug fix in dynamics.F
6774      calc_viscosity called before k=1,Nr loop.
6775    o added some #ifdef's ALLOW_PASSIVE_TRACER
6776    o cleaned initialisations in ctrl_map_ini
6777      related to TAF
6778    
6779    checkpoint40pre6 (2001/08/13)
6780    o split dynamics into thermodynamics & dynamics
6781    o corresponding split of calc_diffusivity into
6782      calc_diffusivity, calc_viscosity
6783      (kpp_calc_diff, kpp_calc_visc).
6784    o Added diffkr, kapgm to control variables
6785    o bug fix in gmredi_slope_limit for ldd97
6786    
6787    checkpoint40pre5 (2001/07/31)
6788    o proper initialization of Adams-Bashforth time stepping
6789      + uses forward step for very first step of model (iter=0)
6790    o re-generated *all* output since almost all output is modified by this
6791      change (sorry but we've been putting this one off for about 2 years)
6792      + natl_box, aim.5l_Equatorial_Channel and aim.5l_zon-ave were
6793        *not* regenerated since they are already out of date and I don't
6794        want to create the impression that they are suddenly working.
6795    o removed KAP stuff for DEC's
6796    o modified/added many .cvsignore files in */code and */input
6797    o added new expt "solid-body.cs-32x32x1"
6798      + this uses an alternative form of ini_curvilinear_grid.F which
6799        is not necessarily any better than the current one...
6800    
6801    checkpoint40pre4 (2001/07/30)
6802    o added re-initialisations of utrans,vtrans,rtrans in
6803      calc_common_factors which are crucial for TAF.
6804    o extended iMin,jMin range for calc_common_factors,
6805      calc_diffusivity
6806    o added option ALLOW_PASSIVE_TRACER
6807    o a few minor updates and fixes
6808    
6809    checkpoint40pre3 (2001/07/13)
6810  o created calc_gtr1.F for gad package  o created calc_gtr1.F for gad package
6811  o split the_main_loop and re-introduced forward_step  o split the_main_loop and re-introduced forward_step
6812  o some recomputations of nIter0 for TAMC  o some recomputations of nIter0 for TAMC
6813    
6814  checkpoint40pre2  checkpoint40pre2 (2001/07/13)
6815  o Updated to latest branch of AJA, JMC  o Updated to latest branch of AJA, JMC
6816  o Added gradient check package  o Added gradient check package
6817  o Added routines for passive tracer handling  o Added routines for passive tracer handling
6818  o Added carbon sequestration sensitivity experiment  o Added carbon sequestration sensitivity experiment
6819    
6820  checkpoint39  checkpoint39 (2001/05/14)
6821   o Modifications and fixes to support TAMC   o Modifications and fixes to support TAMC
6822     (mainly missing or wrong directives)     (mainly missing or wrong directives)
6823   o Corrected common blocks when fooling TAMC to produce adjoint I/O   o Corrected common blocks when fooling TAMC to produce adjoint I/O
# Line 27  checkpoint39 Line 6831  checkpoint39
6831           (NB: this is not the full ECCO environment)           (NB: this is not the full ECCO environment)
6832   o disabled some packages by default in genmake   o disabled some packages by default in genmake
6833    
6834  checkpoint38  checkpoint38 (2001/04/10)
6835   o see notes_c37_adj.txt   o see notes_c37_adj.txt
6836   o corrected wrong layer index in external_forcing_t   o corrected wrong layer index in external_forcing_t
6837   o replaced the_main_loop/forward_step by the_main_loop   o replaced the_main_loop/forward_step by the_main_loop
# Line 35  checkpoint38 Line 6839  checkpoint38
6839     (replaced criteria for initial/final state)     (replaced criteria for initial/final state)
6840   o added runtime flag for pre-C35 pickups: usePickupBeforeC35   o added runtime flag for pre-C35 pickups: usePickupBeforeC35
6841    
6842  checkpoint37  checkpoint37 (2001/03/13)
6843   o mdsio.F routine split and packaged in pkg/mdsio   o mdsio.F routine split and packaged in pkg/mdsio
6844     (mdsio.F and mdsio_gl.F still exist in eesupp/src but are not     (mdsio.F and mdsio_gl.F still exist in eesupp/src but are not
6845      used unless genmake -disable=mdsio)      used unless genmake -disable=mdsio)
# Line 52  checkpoint37 Line 6856  checkpoint37
6856   o Non-Hydrostatic pickup file Pb fixed.   o Non-Hydrostatic pickup file Pb fixed.
6857   o bug with Rigid-lid version (since c35) fixed.     o bug with Rigid-lid version (since c35) fixed.  
6858    
6859  checkpoint36  checkpoint36 (2001/02/20)
6860   o implement Crank-Nickelson barotropic time-stepping   o implement Crank-Nickelson barotropic time-stepping
6861   o recover Time-Average diagnostics   o recover Time-Average diagnostics
6862   o fix Pb in checkpoint (PR#19)   o fix Pb in checkpoint (PR#19)
6863   o AIM become a standard package ; clean unused CPP_kees   o AIM become a standard package ; clean unused CPP_kees
6864    
6865  checkpoint35  checkpoint35 (2001/02/08)
6866   o subtantial rewrite of dynamics.f   o subtantial rewrite of dynamics.f
6867   o allows staggered time-stepping   o allows staggered time-stepping
6868   o packaged obcs, aim (Atmospheric Physics), zonal_filt, shap_filt   o packaged obcs, aim (Atmospheric Physics), zonal_filt, shap_filt
6869   o added bottom drag (linear + quadratic)   o added bottom drag (linear + quadratic)
6870    
6871  checkpoint34  checkpoint34 (2001/01/30)
6872   o Modified exchange routines for correct reverse simulation.   o Modified exchange routines for correct reverse simulation.
6873   o Added verification output to comply with bug fix in impldiff.F   o Added verification output to comply with bug fix in impldiff.F
6874     as of c33 (exp2, natl_box).     as of c33 (exp2, natl_box).
# Line 75  checkpoint34 Line 6879  checkpoint34
6879   o Added routine GLOBAL_SUM_INT to global_sum.F   o Added routine GLOBAL_SUM_INT to global_sum.F
6880   o Added mdsio_gl.F for ECCO purposes.   o Added mdsio_gl.F for ECCO purposes.
6881    
6882  checkpoint33  checkpoint33 (2000/11/30)
6883   o Fixed bug in lower BC in impldiff.F   o Fixed bug in lower BC in impldiff.F
6884   o Fixed confusion about units of forcing arrays in FFIELDS.h   o Fixed confusion about units of forcing arrays in FFIELDS.h
6885     namely Fu,Fv,Qnet,Qsw,EmPmR:     namely Fu,Fv,Qnet,Qsw,EmPmR:
# Line 93  checkpoint33 Line 6897  checkpoint33
6897       possibly use them.       possibly use them.
6898   o Corrected genmake to delete a temporary file during configuration   o Corrected genmake to delete a temporary file during configuration
6899    
6900  checkpoint32  checkpoint32 (2000/11/13)
6901   o Scaling of forcing fields moved from external_forcing.F to   o Scaling of forcing fields moved from external_forcing.F to
6902     external_fields_scale.F, called directly after loading fields.     external_fields_scale.F, called directly after loading fields.
6903   o Surface relaxation terms added to surface tendency fields in   o Surface relaxation terms added to surface tendency fields in
# Line 104  checkpoint32 Line 6908  checkpoint32
6908   o Modifications and bug fixes in KPP package.   o Modifications and bug fixes in KPP package.
6909   o Verification experiment for KPP added (verification/nat_box/)   o Verification experiment for KPP added (verification/nat_box/)
6910    
6911  checkpoint31  checkpoint31 (2000/09/11)
6912   o Packages interface brought in line with defined standard   o Packages interface brought in line with defined standard
6913     -> new routines packages_...F     -> new routines packages_...F
6914     -> changes in initialise_fixed.F, initialise_varia.F     -> changes in initialise_fixed.F, initialise_varia.F
# Line 121  checkpoint31 Line 6925  checkpoint31
6925     - not yet tested for GMRedi.     - not yet tested for GMRedi.
6926     - not yet tested for KPP.     - not yet tested for KPP.
6927    
6928  checkpoint30  checkpoint30 (2000/07/13)
6929   o Updates for OBCs   o Updates for OBCs
6930   o New experiment for test OBCs (internal_wave)   o New experiment for test OBCs (internal_wave)
6931   o New output.txt in verification/exp4/results/   o New output.txt in verification/exp4/results/
# Line 130  checkpoint30 Line 6934  checkpoint30
6934   o CPP'd calls to system routines for TARGET_CRAY_VECTOR (P.H.)   o CPP'd calls to system routines for TARGET_CRAY_VECTOR (P.H.)
6935     and entry for T90 in genmake     and entry for T90 in genmake
6936    
6937  checkpoint29  checkpoint29 (2000/06/21)
6938   o packaged KPP and GM/Redi   o packaged KPP and GM/Redi
6939    
6940  checkpoint28  checkpoint28 (2000/06/09)
6941   o Corrected initialization of hFacMin for difference vertical coordinates   o Corrected initialization of hFacMin for difference vertical coordinates
6942   o Modified calculation of partial cell thickness to more robust algorithm   o Modified calculation of partial cell thickness to more robust algorithm
6943   o config_summary.F: replaced write_1D_... by write_0D_...   o config_summary.F: replaced write_1D_... by write_0D_...
# Line 146  checkpoint28 Line 6950  checkpoint28
6950     included store directives and tape key computations required for TAMC.     included store directives and tape key computations required for TAMC.
6951   o ALL TAMC related changes are between ifdef ALLOW_AUTODIFF_TAMC   o ALL TAMC related changes are between ifdef ALLOW_AUTODIFF_TAMC
6952    
6953  checkpoint27  checkpoint27 (2000/04/10)
6954   o fixed calc_isoslopes() to so that cancellation of terms in tensor   o fixed calc_isoslopes() to so that cancellation of terms in tensor
6955     formulation works properly with variable resolution.     formulation works properly with variable resolution.
6956   o restructured the calling tree between the_model_main() and dynamics()   o restructured the calling tree between the_model_main() and dynamics()
# Line 154  checkpoint27 Line 6958  checkpoint27
6958   o introduced initialization file pSurfInitFile for free surface (cg2d_x)   o introduced initialization file pSurfInitFile for free surface (cg2d_x)
6959     in new routine ini_psurf()     in new routine ini_psurf()
6960    
6961  checkpoint26  checkpoint26 (2000/04/05)
6962   o moved some #ifdef in optional routines to encompass everything   o moved some #ifdef in optional routines to encompass everything
6963     except the argument declarations. This was using up some memory.     except the argument declarations. This was using up some memory.
6964   o fixed macros like _ADT to work with both versions of Linux cpp   o fixed macros like _ADT to work with both versions of Linux cpp
# Line 164  checkpoint26 Line 6968  checkpoint26
6968     (macros are now in eesupp/inc/CPP_EEMACROS.h)     (macros are now in eesupp/inc/CPP_EEMACROS.h)
6969   o patch for 2 processor JAM mode   o patch for 2 processor JAM mode
6970    
6971  checkpoint25  checkpoint25 (2000/03/15)
6972   o updates for OBCs and NH   o updates for OBCs and NH
6973   o dramatically reduced memory usage   o dramatically reduced memory usage
6974   o added "JAM" routines for use on Artic network   o added "JAM" routines for use on Artic network
# Line 175  checkpoint25 Line 6979  checkpoint25
6979      an explicit free-surface option)      an explicit free-surface option)
6980   o initial state input files for U and V   o initial state input files for U and V
6981    
6982  checkpoint24  checkpoint24 (1999/08/02)
6983   o Removed some spurious "REAL"s   o Removed some spurious "REAL"s
6984   o Updated KPP to latest version from JPL   o Updated KPP to latest version from JPL
6985   o Added a COS(latitude) in horizontal viscosity   o Added a COS(latitude) in horizontal viscosity
6986    
6987  checkpoint23  checkpoint23 (1999/05/26)
6988   o Added del^4 diffusion for salt and temperature   o Added del^4 diffusion for salt and temperature
6989   o Multiple minor fixes (implicit none's, arguments to global_sum, etc.)   o Multiple minor fixes (implicit none's, arguments to global_sum, etc.)
6990    
6991  checkpoint22  checkpoint22 (1999/05/18)
6992   o Made many small changes: implicit none, format(i5), etc...   o Made many small changes: implicit none, format(i5), etc...
6993   o Introduced KPP mixing scheme (compiles and runs but *not* tested)   o Introduced KPP mixing scheme (compiles and runs but *not* tested)
6994    
6995  checkpoint21  checkpoint21 (1999/05/18)
6996   o Introduced new I/O package that supports direct-access records (mdsio.F)   o Introduced new I/O package that supports direct-access records (mdsio.F)
6997   o Split-up mid-level I/O routines   o Split-up mid-level I/O routines
6998   o Updated input data for experiments 0,1,2,4 and 5   o Updated input data for experiments 0,1,2,4 and 5
6999   o Finally removed the genmake.* scripts (everyone seems happy with genmake)   o Finally removed the genmake.* scripts (everyone seems happy with genmake)
7000    
7001  checkpoint20  checkpoint20 (1999/03/22)
7002   o Tidied up open-boundaries some more   o Tidied up open-boundaries some more
7003   o Added non-hydrostatic code   o Added non-hydrostatic code
7004   o Fixed some input data   o Fixed some input data
7005   o Modified MPI start-up to work in "coupled" context.   o Modified MPI start-up to work in "coupled" context.
7006    
7007  checkpoint19  checkpoint19 (1998/12/15)
7008   o Tidied up directory structure for verification experiments.   o Tidied up directory structure for verification experiments.
7009   o Added new code for open boundaries.   o Added new code for open boundaries.
7010   o Corrected advective terms near boundaries.   o Corrected advective terms near boundaries.
# Line 208  checkpoint19 Line 7012  checkpoint19
7012   o Implemented free-slip/no-slip BCs and del^4 dissipation.   o Implemented free-slip/no-slip BCs and del^4 dissipation.
7013   o Split default parameters out of ini_parms.F into set_defaults.F.   o Split default parameters out of ini_parms.F into set_defaults.F.
7014    
7015  checkpoint18  checkpoint18 (1998/11/30)
7016   o Further changes for optional code generation with   o Further changes for optional code generation with
7017     CPP - ugh!     CPP - ugh!
7018    
7019  checkpoint17  checkpoint17 (1998/11/03)
7020   o Beginning to incorporating modularity   o Beginning to incorporating modularity
7021     for supporting atmos. and ocean configs.     for supporting atmos. and ocean configs.
7022   o Small changes for TAMC complinace   o Small changes for TAMC complinace
7023   o New ultra simple test case. Barotropic box   o New ultra simple test case. Barotropic box
7024     configuration "exp0".     configuration "exp0".
7025    
7026  checkpoint16  checkpoint16 (1998/10/28)
7027   o Minor changes to exchange routines to support   o Minor changes to exchange routines to support
7028     accumulation in reverse mode. Adjoint of an     accumulation in reverse mode. Adjoint of an
7029     assignment is an addition.     assignment is an addition.
# Line 227  checkpoint16 Line 7031  checkpoint16
7031     syntax) and by g77 under Linux ( 72 character     syntax) and by g77 under Linux ( 72 character
7032     limit ).     limit ).
7033    
7034  checkpoint15  checkpoint15 (1998/09/29)
7035   Rewrote exchange routines to allow   Rewrote exchange routines to allow
7036   o General tile <-> tile connectivity.   o General tile <-> tile connectivity.
7037   o TAMC reverse mode flag ( is this really needed? )   o TAMC reverse mode flag ( is this really needed? )
# Line 236  checkpoint15 Line 7040  checkpoint15
7040     shmput/shmget, VIA, SYSV shmem and every other cool     shmput/shmget, VIA, SYSV shmem and every other cool
7041     communication method.     communication method.
7042    
7043  checkpoint14  checkpoint14 (1998/09/09)
7044   Consistent isomorphism chages made. These allow dynamical core   Consistent isomorphism chages made. These allow dynamical core
7045   to support both pressure and meters as a vertical coordinate.   to support both pressure and meters as a vertical coordinate.
7046    
7047  checkpoint13  checkpoint13 (1998/07/17)
7048   Release which corrects global_max problem and a couple   Release which corrects global_max problem and a couple
7049   of KGM time-averaging diagnostic errors. Also contains   of KGM time-averaging diagnostic errors. Also contains
7050   a double-gyre experiment setup as well as the baseline   a double-gyre experiment setup as well as the baseline
# Line 255  branch-point-rdot Line 7059  branch-point-rdot
7059   I don't want to commit the rDot to the main-trunk until   I don't want to commit the rDot to the main-trunk until
7060   we've actually tested it...   we've actually tested it...
7061    
7062  checkpoint12  checkpoint12 (1998/07/08)
7063   Tidy up and added generic genmake script (formerly   Tidy up and added generic genmake script (formerly
7064   configure script).   configure script).
7065   Released to testers.   Released to testers.
7066    
7067  checkpoint11  checkpoint11 (1998/07/02)
7068   Re-arranged initialise() and introduced ini_vertical_grid()   Re-arranged initialise() and introduced ini_vertical_grid()
7069   and ini_masks_etc().   and ini_masks_etc().
7070    
7071  checkpoint10  checkpoint10 (1998/07/01)
7072   Introduced the configure script.   Introduced the configure script.
7073   Separated out the diags package.   Separated out the diags package.
7074   Added template for writing time-averages of tile/intermediate quantities.   Added template for writing time-averages of tile/intermediate quantities.
7075   Updated SIZE.h in exp2 and made the data big-endian.   Updated SIZE.h in exp2 and made the data big-endian.
7076    
7077  checkpoint9  checkpoint9 (1998/06/22)
7078   MPI fix. Filename changes (meta/data). salbin*y stuff.   MPI fix. Filename changes (meta/data). salbin*y stuff.
7079   General tidy-up.   General tidy-up.
7080   SST.bin SSS.bin added to verification/exp2   SST.bin SSS.bin added to verification/exp2
7081    
7082  checkpoint8  checkpoint8 (1998/06/22)
7083   Inludes time-dependant forcing and time-averaging.   Inludes time-dependant forcing and time-averaging.
7084   Works at 4x4 and 2.8125x2.8125 global   Works at 4x4 and 2.8125x2.8125 global
7085    
# Line 285  checkpoint7-4degree-ref Line 7089  checkpoint7-4degree-ref
7089   model etc..   model etc..
7090   Configured for verification/exp2 - 4 degree global, two process.   Configured for verification/exp2 - 4 degree global, two process.
7091    
7092  checkpoint7  checkpoint7 (1998/06/15)
7093   Created by cnh   Created by cnh
7094   Simple 4 degree global simulation   Simple 4 degree global simulation
7095   configuration.   configuration.
# Line 293  checkpoint7 Line 7097  checkpoint7
7097   hydrography, bathymetry etc   hydrography, bathymetry etc
7098   Does not include Heat Flux and E-P   Does not include Heat Flux and E-P
7099    
7100  checkpoint6  checkpoint6 (1998/06/08)
7101   Created by cnh   Created by cnh
7102   merged checkpoint5 with CD and   merged checkpoint5 with CD and
7103   spherical polar code.   spherical polar code.
7104   Still some problems with GM Redi   Still some problems with GM Redi
7105   abd full topography.   abd full topography.
7106    
7107  checkpoint5  checkpoint5 (1998/06/08)
7108   Created by AJA   Created by AJA
7109   contains updates to GM Redi   contains updates to GM Redi
7110   and reordered timestepping loop   and reordered timestepping loop
7111   for Implicit Diffusion.   for Implicit Diffusion.
7112    
7113  checkpoint4  checkpoint4 (1998/05/30)
7114   Created by cnh   Created by cnh
7115   Contains memory saving macros ( _rdxc etc..) for when   Contains memory saving macros ( _rdxc etc..) for when
7116   grid variations are limited.   grid variations are limited.
7117   Contains polynomial coeffs for EOS and knudsen program   Contains polynomial coeffs for EOS and knudsen program
7118   for generation.   for generation.
7119    
7120  checkpoint3  checkpoint3 (1998/05/26)
7121   Created by cnh   Created by cnh
7122   Added extra flags for runtime options   Added extra flags for runtime options
7123   Added this file   Added this file

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