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revision 1.38 by heimbach, Tue Apr 10 22:35:24 2001 UTC revision 1.1677 by jmc, Tue Jun 26 22:41:32 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  checkpoint38  
7    o testreport:
8      - change adjustment of SIZE.h for mpi+mth testing: preserve enough tiles
9        (nSx,nSy) for the number of threads (from eedata.mth)
10    o model/src:
11      - remove 2nd set of calls at the top of initialise_varia.F (Adjoint part)
12        related to Non_Lin Free-Surf or Bottom-Control (but not longer necessary).
13    o verification/tutorial_tracer_adjsens/
14      - compile with ALLOW_CG2D_NSA
15      - run with nonlinFreeSurf=3
16      - update reference output_adm.txt
17    o tools/genmake2:
18      - add "-DHAVE_NETCDF" to the DEFINES list when NetCDF is available ;
19        refine usePROFILES switching off (only when NetCDF is not available).
20    o verification (atmospheric set-up):
21      - change eosType='IDEALGAS' to eosType='IDEALG' to match variable declaration
22    o pkg/profiles : refine profiles and files handling.
23    o model/src and pkg/ecco : introduce run-time switch usePROFILES.
24    o model/src/the_main_loop.F, forward_step.F and pkg/exf/EXF_OPTIONS.h :
25      - changes to use model/src/the_main_loop.F rather than the ecco version
26        in ecco type adjoint runs.
27    o model/src:
28      - move computation of recip of grid distance & area from INI_MASKS_ETC to INI_GRID
29      - move setting of h0Fac[C,W,S] from INI_LINEAR_PHISURF to INI_MASKS_ETC
30      - update_masks_etc.F: rename SMOOTH*_R4,R8 function to the corresponding type (RS,RL)
31    o model/src:
32      - fix S/R UPDATE_CG2D for ALLOW_DEPTH_CONTROL case (was empty before);
33        update output of test experiment bottom_ctrl_5x5.
34    o pkg/generic_advdiff:
35      - implement vertical bi-harmonic diffusion (for now, only for T & S and
36        only explicitly).
37    o verification/bottom_ctrl_5x5/
38      update reference output (results changed quite some time ago,
39      not sure when; but new reference results look ok in terms of grdchk)
40    o verification/1D_ocean_ice_column/
41      For verification purposes, the exact adjoint rather than an approx.
42      should be used (e.g., to comare against F.D. or TLM).
43      removed autodiff_inadmode*_ad.F routines in code_ad/
44      Update results/ accordingly.
45    o pkg/cal:
46      - change cal_getdate.F so that output date is function of input time only
47        (less ambiguous, not mixed up with input iteration number).
48      - fix calendarDumps for non-zero phase-lag (S/R CAL_TIME2DUMP).
49    o pkg/diagnostics:
50      - implement calendarDumps also for stats-diags
51      - implement calendarDumps also for snap-shot output (negative freq)
52      - for now, ignores calendarDumps if non-zero phase-lag.
53    
54    checkpoint63n (2012/06/04)
55    o model/src:
56      - recompute rSurfW & S to ensure consistent column thickness (needed for rStar)
57        between Sum_k(hFac*drF) and rSurf-rLow, for now only when using pkg/shelfice;
58      - use h0FacC, W & S to compute hFac_surfC, W & S in calc_surf_dr.F (more
59        similar to calc_r_star.F); update results of experiment internal_wave and
60        tutorial_global_oce_in_p (affected @ truncation level).
61    o pkg/shelfice:
62      - add parameterisation of advective-diffusive flux into the ice shelf
63        according to Holland and Jenkins (1999), eq.22-33, as suggested by Jan De Ryd
64      - simply eps3/3a computation
65    o eesupp:
66     - add new CPP option (DISCONNECTED_TILES) to disconnect tiles (no exchange
67       between tiles, just fill-in edges assuming locally periodic subdomain) and
68       add corresponding exchange subroutines (EXCH0);
69     - new CG-solver version (_EX0) for disconnected-tiles special case.
70    o model/src (CG-solvers):
71     - modify Single-Reduction version (CG2D_SR) in case cg2dMaxIters is reached
72       (similar final residual output and max-Iter number as with standard version);
73     - allows to store and use lowest-residual solution (standard & _SR versions);
74     - cleaning up (remove old, commented out code, LETS_MAKE_JAM ...).
75     - by default, also compile CG2D_SR version (define ALLOW_SRCG in CPP_OPTIONS.h)
76    o eesup/src:
77     - global_vec_sum.F cleaning: add a BARRIER ; update comments ; remove ndef
78       ALWAYS_USE_MPI (no longer needed after fixing usingMPI settings - March 2012)
79    o pkg/salt_plume added to lab_sea/input_ad.noseaicedyn
80    
81    checkpoint63m (2012/04/27)
82    o pkg/shelfice:
83     - account for partical cells in surface level below ice-shelf for hydrostatic
84       pressure calculion (set uniformFreeSurfLev to F); update isomip experiments.
85    o ad test experiments:
86     - update and rename to "ad_optfile.local" local AD-optfile specific to a
87       particular adjoint verification experiment (in verification/*/code_ad/)
88    o pkg/seaice & pkg/exf:
89     - Part two of ECCO-CLIVAR code merges.
90       Completes merge of seaice area relax. code.
91       Requires unified CPP option EXF_ALLOW_SEAICE_RELAX
92       to be set in EXF_OPTIONS.h since this pkg controls its I/O
93       (and avoids second CPP option in SEAICE_OPTIONS.h)
94     - change default value of costIceStart & costIceEnd to a valid date.
95     - add snowPrecip to HSNOW in seaice_growth
96    o pkg/ptracers:
97     - move ptracers summary and setup check into separated S/R ; add a check for
98       valid PTRACERS_Iter0 value (error+stop or just warning).
99    o pkg/cal (+ pkg/ecco):
100     - avoid calling a S/R with 2 times the same arg (FWD: unless both are only used
101       as input; and for AD, unless both are not differentiable (e.g., k index)).
102    o model/src:
103     - define internal flag "uniformFreeSurfLev" (=T when free-surface level-index
104       is everywhere k=1) to speed-up some calculations (by pass kSurf reference);
105       temporary set to usingZCoords value (to be changed to F when using shelfice).
106     - hydrostatic pressure: implement partial cell near the surface also for
107       Z-coordinates (for the case where uniformFreeSurfLev=F); replace test on
108       usingZCoords with test on uniformFreeSurfLev where needed (in NonHyd code).
109    o pkg/ctrl/ctrl_init.F:
110     - add a formal parameter to s/r ctrl_init_rec to print
111       xx_$(ctrl_valiable)_file for easier debugging
112     - move call of cal_* routines into the if-block where they are really
113       needed so that xx_$(ctrl_variable)_period can be 0 or -12 without having
114       to specify a startdate
115    o pkg/seaice:
116     - update comments in SEAICE_OPTIONS.h (+ similar update of lab_sea/code and
117       global_ocean.cs32x15/code versions).
118     - turn on seaice Multi-category (in data.seaice, SEAICE_multDim=7) for
119       verification experiment global_ocean.cs32x15.seaice and update results.
120    o pkg/exf:
121     - new S/R EXF_GETFIELD_START to return starting-time of a forcing field
122       (according to useExfYearlyFields).
123    o pkg/cal:
124     - move calendar setting & summary (previously in cal_readparams.F) into new
125       S/R CAL_INIT_FIXED to be called later in the initialisation process, once
126       length of the simulation is set (after SET_PARMS call); This is an attempt
127       to fix Pb when, e.g.: pkg/longstep, modifies the length of the run.
128     - For safety: keep a record of pkg/cal parameter settings status
129               to allow to STOP if one pkg/cal S/R is called too early.
130     - add a stop in all basic pkg/cal subroutines if called before setting is done.
131     - modify cal_getdate.F: stop when nothing was returned;
132       if called with myIter=-1, simply retrun modelBaseDate (1,2 = startDate_1,_2);
133       this allows to remove "cal.h" from seaice_read_parms.F & init_mnc_vars.F.
134    
135    checkpoint63l (2012/04/04)
136    o pkg/bbl:
137      - fix call to FIND_RHO_2D in bbl_calc_rho.F (case multi-tiles per proc);
138        update global_with_exf output.yearly.txt file.
139    o pkg/cal:
140      - start to clean-up cal_set.F ; fix for the case where baseTime is non-zero.
141      - remove 2 unsused and very short (1 line only) functions ;
142      - remove unsused subroutines from AD-Diff list.
143    o model/src:
144      - start to implement clean wait to stop in initialization S/R (config_check.F,
145         packages_check.F, ini_parms.F and pkg/obcs/obcs_check.F + pkg/mypackage)
146    o folowing PRINT_MESSAGE changes:
147      - remove reminder multiple print to the same file (STDOUT) when multi-threads.
148    o pkg/bbl:
149      - modification so it can work with z*
150      - replace deltaT with dTtracerLev(k) for asynchronous time stepping
151      - global_with_exf/input.yearly verification; changes output.yearly.txt
152    o eesupp/src:
153      - PRINT_MESSAGE: use OpenMP critical instruction (similar to PRINT_ERROR);
154        writing to unit 0 (if unit=errorMessageUnit) extended to the case myThid=1
155      - CHECK_THREADS: specific code if using OpenMP threading: improve checking of
156        # of threads across processors (e.g., different env OMP_NUM_THREADS setting)
157      - improve special preliminary call to EESET_PARMS (if eedata is read 2 times).
158      - when using MPI, always set usingMPI=T ; set default accordingly and stop
159        if not consistent.
160      - ALL_PROC_DIE: add a BARRIER after MPI_FINALIZE call ; skip this when thread
161        argument is zero (in case called within single-thread section).
162    o pkg/fizhi:
163        clean-up turbulence cold-start switch: decided in fizhi_init_vars.F, stored
164        in common bloc (fizhi_coms.h) and then passed as argument up to S/R TURBIO.
165    o pkg/exch2:
166      - add argument "updateCorners" to S/R exch2_get_uv_bounds (enable to
167        activate EXCH_IGNORE_CORNERS in vector EXCH S/R).
168      - switch 1rst EXCH call to IGNORE_CORNERS (instead of UPDATE_CORNERS)
169        but keep the 2nd with UPDATE_CORNERS: this prevents overwriting good data
170        with bad ones coming from a not-yet-updated halo.
171        This should fix the problem when sNx <> sNy and GCD(sNx,sNy) < 2*Olx.
172    o pkg/frazil:
173        move FrzForcT diag from frazil_diagnostics_state.F to frazil_calc_rhs.F
174        http://mitgcm.org/pipermail/mitgcm-devel/2012-March/005384.html
175    o model/src/config_check.F: add a check for OLx>sNx/OLy>sNy
176    o verification/lab_sea
177      * #undef SEAICE_EXCLUDE_FOR_EXACT_AD_TESTING
178      * #define ALLOW_SST_CONTROL & ALLOW_SST_CONTROL
179      * nTimeSteps 3 -> 4
180      * changed reference output accordingly
181    o pkg/ctrl:
182      * fix ctrl_get_gen for xx_sst, xx_sss
183    o pkg/fizhi:
184      - fix 2 calls to S/R GRD2MSC (argument igrd) in update_earth_exports.F
185        update results of exp. fizhi-cs-32x32x40 (fail with only 6 digits for cg2d)
186      - by default, use new version of S/R GETPWHERE (#define TRY_NEW_GETPWHERE);
187        fix few out-of-bounds indices in referencing vars (initialise igrd to 1);
188        clean-up fizhi_turb.F (remove unused & uninitialised qdiaglsm array).
189    o pkg/gmredi:
190      - add diagnostic of Redi (main diagnonal) vertical diffusive flux of Temp
191    o pkg/fizhi:
192      - fix few initialisation and multi-tile Pb: aqualev & gridalt now pass the
193        (old)aces open64 tuv test.
194    o pkg/icefront: fix bug and reorder loop in icefront_init_varia.F
195    o pkg/mom_vecinv:
196      - fix 1 loop range in mom_vecinv.F to be like all the other loops which
197        set/update gu,gv/Diss (fix Pb of uninitialised fVerUkp in admom_vecinv
198        with non-lin free-surf).
199    o model/src: move k-loop outside of i/j-loops when (re-)computing R_low
200      in ini/update_masks_etc.F in order to avoid -O3 optimization problems with
201      some compilers (gfortran 4.6.0 on MacOS)
202    o momentum:
203      - separate fVer?(:,:,kUp) & fVer?(:,:,kDown) in argument list of MOM_FLUXFORM
204        & MOM_VECINV subroutines (to help TAF). This fixes Pb of uninitialised
205        fVer?(kUp) in admom_fluxform with non-lin free-surf or bottom control.
206    
207    checkpoint63k (2012/03/17)
208    o model/src:
209       - selectAddFluid (ALLOW_ADDFLUID): add missing term in horizontal momentum
210         flux-form (mom_fluxform.F) and vertical momentum (calc_gw.F) equations.
211       - SOLVE_DIAGONAL: switch default to use adjoinable & vectorized version
212         (#undef SOLVE_DIAGONAL_LOWMEMORY); update output of exp. front_relax.bvp.
213    o model/src: solve_*diagonal.F
214       - replace division with multiplication by inverse (similar to original version)
215         update output of AD exp. global_ocean.90x40x15.
216       - fix pkg/gmredi/gmredi_calc_psi_bvp.F & pkg/ggl90/ggl90_calc.F
217         to enable the use of the vectorized & differentiable solve_tridiagonal.F
218       - test exp. global_ocean.90x40x15/input_ad: switch to advection scheme 20 for
219         vertical advection (to get solve_tridiagonal tested in AD mode).
220    o pkg/seaice: ECCO-CLIVAR merge:
221      1. seaice AREA relaxation
222         * CPP option: SEAICE_ALLOW_AREA_RELAXATION
223         * runtime flag: SEAICE_tauAreaObsRelax
224      2. modified global mean cost imbalance code: CPP option
225          ALLOW_SSH_GLOBMEAN_COST_CONTRIBUTION
226    o another iteration on solve_*diagonal.F
227       Make choices independent of AUTODIFF
228       Default will be the adjoinable vectorized version.
229       Alternative choices are:
230       * non-adjoinable original version with low memory footprint:
231         #define SOLVE_DIAGONAL_LOWMEMORY
232       * still adjoinable but does not vectorize (k as inner-most loop):
233         #define SOLVE_DIAGONAL_KINNER (keeping SOLVE_DIAGONAL_LOWMEMORY undef)
234    o testreport
235     - add option to use a home made wrapper around "make"
236     - remove MITGCM_IEEE env. variable (no longer active)
237    o pkg/shelfice
238     - improve computation of friction velocity for velocity dependent
239       exchange coefficients: include velocities into SHELFICEBoundaryLayer
240       block to average velocities vertically
241     - add TAF store directives for SHI_ALLOW_GAMMAFRICT
242    o Modify diagonal solvers, now three versions (upon request):
243      #ifndef SOLVE_DIAGONAL_AUTODIFF
244        1. default version (dating back a while ago)
245      #else /* def SOLVE_DIAGONAL_AUTODIFF */
246      # ifdef SOLVE_DIAGONAL_KINNER
247        2. adjoinable version with k-innermost loop (G. Forget)
248      # else
249        3. adjoinable vectorized version of 2.
250      # endif
251      #endif /* SOLVE_DIAGONAL_AUTODIFF */
252      All flags are currently set within routines, but could/should be moved to CPP-options.
253      Array bounds for 1. are as before, for 2.,3. cover the entire domain
254      (could be changed for 1. too).
255    o verification/lab_sea (fwd):
256      - update the 4 fwd lab_sea test experiment: no longer SEAICE_GROWTH_LEGACY,
257        use 7 categories (except hb87), new solve4temp params (except salt_plume),
258        constant salinity (=4) or variable salinity (salt_plume) done through
259        SItracer.
260    o pkg/seaice:
261      - rename parameters: SIsalFrac to SEAICE_saltFrac & SIsal0 to SEAICE_salt0;
262      - remove old parameters ( SEAICE_freeze, SEAICEturbFluxFormula, SEAICE_gamma_t,
263         SEAICE_gamma_t_frz, SEAICE_availHeatTaper & SEAICE_availHeatFracFrz)
264        from SEAICE_PARMS.h ; still need to fix seaice_cost_sst.F (broken when
265        SEAICE_freeze got retired) but already better than previously with
266        SEAICE_freeze=123456.7 deg.C;
267      - move setting of facOpenGrow/Melt from SEAICE_INIT_FIXED to SEAICE_READPARMS
268        (safer multi-threaded setting); always set SEAICEuseEVP;
269      - setting of ocean-ice turb. flux coeff: moved from SEAICE_CHECK to
270        SEAICE_READPARMS & SEAICE_INIT_FIXED (this fixes wrong summary report);
271        stop if multiple specifications for the same coeff; make sure default
272        SEAICE_mcPheePiston is compatible with drF(1) & deltaT.
273    o pkg/obcs:
274      - allow to switch to upwind 1rst order advection scheme for the advective
275        flux computation at the open-boundary; disabled for adjoint built.
276    o pkg/ptracers:
277      - rename PTRACERS_RESTART.h -> PTRACERS_START.h
278      - rename ptracers_fields_blocking_exchanges.F -> ptracers_fields_blocking_exch.F
279      - add parameter to decide when to start a tracer; use internal flag to
280        know which tracer to step-forward; switch this internal flag at the top
281        of forward_step.F (new S/R PTRACERS_SWITCH_ONOFF); for now, not enabled
282        for adjoint built.
283    o pkg/seaice:
284      - add SEAICE_SIZE.h anywhere in the code where SEAICE.h is included ;
285      - move MULTDIM declaration and setting from SEAICE.h to SEAICE_SIZE.h ;
286      - keep experiment offline_exf_seaice truly single category (set MULTDIM=1).
287    o pkg/ecco:
288      - fix writing of output file DiagnosCost_ClimSalt/Theta
289        and DiagnosCost_DriftSalt/Theta (if multi-tiles per proc).
290    o pkg/seaice:
291      - add missing initialisation of COR_ICE array in dynsolver.F
292      - merging SEAICE_MULTICATEGORY define and undef cases. Now the same code is
293        compiled either way, and is tested in all exps (multidim was only tested
294        in lab_sea ad before).
295      - cosmetic change to prepare for future addition of ITD. no change to results.
296        no defaults change.
297      - added run time param SEAICE_multDim (7 for SEAICE_MULTICATEGORY, 1 otherwise).
298      - by lack of adequate verification experiments, I further used custom versions
299        of global_ocean.cs32x15 to test multicat or not, with pickup or not. All
300        should be correct.
301      - avoid recomputations in ad.
302    o array initialisation in adjoint mode:
303      1) pkg/mom_common/mom_calc_ke.F:
304        add full array initialisation of KE inside mom_calc_ke.F (ALLOW_AUTODIFF_TAMC):
305        The S/R which calls MOM_CALC_KE initialises KE but in some recomputation
306        part this initialisation is gone, resulting in Floating Point Exception
307        (caught by open64 compiler with debug option).
308      2) model/src/convective_weights.F
309        set output convectCount over the full array range (instead of doing
310        an update): this fix a similar issue when called within recomputation (adjoint)
311        which could by-pass the initialisation (normally done in the caller S/R).
312    o pkg/seaice:
313      - final version of turbulent flux params, as agreed at MIT ice meet:
314           SEAICE_mcPheePiston (default is ~ 0.000875)
315           SEAICE_mcPheeTaper (default is 0.)
316           SEAICE_frazilFrac (defualt is 1.)
317           SEAICE_mcPheeStepFunc (default is false)
318      - changes results at trunction error level
319      - ifdef SEAICE_EXTERNAL_FLUXES, disallow SEAICE_waterAlbedo
320    o added pkg/frazil:
321      - see frazil_description.tex for details
322      - verification experiment is global_with_exf/input.yearly; changes output.yearly.txt
323    o pkg/shelfice/shelfice_thermodynamics.F
324      - fix exponents for velocity dependent exchange coefficients: change
325        from 2/3(=0) to 0.66666666666666667
326      - move computation of velocity dependent exchange coefficients into
327        separate loop, so that it applies to both thermodynamics
328      - move some divisions by constants out of loops
329    
330    checkpoint63j (2012/02/16)
331    o pkg/seaice:
332      - overhaul of seaice_summary.F after feb 2012 clean-up of seaice_growth.F etc.
333      - SItracer:  added run time params, and allow coupling to ocn salinity.
334    o pkg/seaice: remove (almost) all divisions by constants within loops
335      in seaice_growth.F and seaice_solve4temp.F, this changes (only) the cg2d
336      results of global_ocean.cs32x15.seaice from 16 to 11 digits (but only
337      those, caused by 1/QI -> recip_QI) -> update output.seaice.txt,
338      output_adm.seaice_dynmix.txt and also lab_sea: output_adm.evp.txt
339    o pkg/seaice :
340      - simplify McPhee tapering, and allow to use it with SEAICEturbFluxFormula
341        = 1 or 2, using newly added run time parameter SEAICE_availHeatTaper.
342      - fix d_AREAbyATM, d_AREAbyOCN, d_AREAbyICE diags I broke in r1.148.
343      - add permanent SItflux diag that corresponds to TFLUX but includes
344        ice+snow. Hence SItflux-TFLUX should match the ice+snow heat budget.
345      - allow activation/testing of a fix for suspected missing term in
346        ocn-ice heat budget (to be confirmed). To test this, you want to
347        undef SEAICE_DISABLE_HEATCONSFIX, and then set the run time param
348        SEAICEheatConsFix to .TRUE. that also allows the 'SIaaflux' diagnostic.
349      - no change in results, fwd or ad.
350    o global_ocean.cs32x15/results: 3 changes following from the pkg/seaice commit below:
351      - switch to variable freezing point.
352           Results change : cg2d -> 1 digits; ad -> 3-6-6 digits.
353      - bug fix : the sublimation term that was missing is now activated.
354           Results change : cg2d -> 2 digits; ad -> 8-6-6 digits.
355      - bug fix : flooding sign term for SIsal0.NE.0.
356           Result change : cg2d -> 8 digits; ad -> 11-12-9 digits.
357    o pkg/seaice:
358      - unified freezing point treatment : the old SEAICE_VARIABLE_FREEZING_POINT
359        is now the default, and the old default constant freezing point is recovered
360        with SEAICE_tempFrz0    = -1.96,
361             SEAICE_dTempFrz_dS = 0.,
362      - retire SEAICE_freeze (= the old way of specifycing the constant freezing point)
363      - remove ALLOW_SEAICE_FLOODING brackets; run time switch is already there.
364      - bug fix (thanks to M. Losch) : the sublimation term that was missing is now
365        activated. To reproduce old results with this bug define SEAICE_DISABLE_SUBLIM.
366      - bug fix (silly me) : flooding sign term (seaice_growth.F r 1.149line 1211)
367        was wrong for SIsal0.NE.0. Changes cs32x15 results (see above item for detail).
368      - bug fix (thanks to O. Jahn) : area loss for melting  got messed up in
369        seaice_growth r149 for legacy branch (no results change).
370      - introduce SEAICE_CAP_SUBLIM : caps sublimation heat flux in solve4temp (code
371        from I. Fenty).
372      - results did not change except for global_ocean.cs32x15, mostly due to the
373        switch to variable freezing point (see above item for detail).
374    o pkg/thsice:
375      - fix and simplify interface to salt_plume pkg ; diagnose directly amount of
376        seawater freezing in thsice_calc_thickn (not used).
377    o pkg/seaice: turbulent flux term specification via run time params.
378      - replace CPP switches with run time switches to facilitate testing
379      - retired CPPs : MCPHEE_OCEAN_ICE_HEAT_FLUX,
380                       GRADIENT_MIXED_LAYER_TURBULENCE_FACTOR
381      - added runtime parameter : SEAICEturbFluxFormula
382      - move Mcphee constants to SEAICE_PARAMS.h
383      - seaice_readparms.F : read turbulent flux term params (SEAICEturbFluxFormula;
384                 SEAICE_availHeatFrac/Frz, or SEAICE_gamma_t/_frz if apply);
385                 remove seaice_summary call (moved to seaice_init_fixed)
386      - seaice_init_fixed.F : set SEAICE_availHeatFrac/Frz depending on
387        SEAICEturbFluxFormula, and seaice_summary call (moved from seaice_readparms)
388      - seaice_summary.F : add missing report of read turbulent flux term set up
389                           and SITRACER.
390      - seaice_check.F : check range; inform and stop if retired CPPs are used
391                         (incl. SEAICE_AGE).
392      - seaice_growth.F : unified use of SEAICE_availHeatFrac/Frz, without
393             CPP switch, same computation as before for the different options.
394      - change results at the truncation level.
395    o pkg/seaice:
396      - remove un-used parameters LAD & MAX_TICE ; add new run-time parameters:
397        useMaykutSatVapPoly (default=F), postSolvTempIter (default=2) and
398        SEAICE_wetAlbTemp (default=-1e-3). Remove option SEAICE_SOLVE4TEMP_LEGACY.
399      - update verification/*/input*/data.seaice:
400        to reproduce previous results with former #defined SEAICE_SOLVE4TEMP_LEGACY
401        code, set useMaykutSatVapPoly=T & postSolvTempIter=0 ;
402        and to reproduce previous results with former non-SOLVE4TEMP_LEGACY code,
403        set SEAICE_wetAlbTemp=0 & SEAICE_snowThick=0.
404    o pkg/seaice/seaice_solve4temp.F (SOLVE4TEMP_LEGACY):
405      - remove LEGACY code for solving for tsurf (A1,A2,A3) but maintain the same
406        algorithm (same choice: useMaykutPolySatVap=T, postSolvTempIter=0);
407        difference in results only due to machine truncation.
408      - remove MAX_TICE (tsurf is always =< TMELT anyway); keep MIN_TICE if using
409        MaykutPolySatVap; keep MIN_LWDOWN.
410      - adapt SEAICE_MODIFY_GROWTH_ADJ code (untested) to non-legacy formulation.
411      - update output of verification exp. lab_sea (4 fwd: 11 cg2d digits except hb87,
412        + 3 AD: 6 digits except evp) and offline_exf_seaice.seaice (12 digits).
413    o pkg/salt_plume:
414      - isolate saltPlumeFlux array exch into a specific S/R called from
415        do_oceanic_phys.F
416      - add interface to pkg/salt_plume (filling of saltPlumeFlux) in pkg/thsice.
417    o verification:
418      - move untested set-up to MITgcm_contrib/verification_other.
419    o pkg/seaice:
420      - retire old way of SEAICE_AGE. Now replaced with ALLOW_SITRACER.
421    o pkg/seaice:
422      - seaice_solve4temp.F (keeping results unchanged):
423        * add 2 future run-time params to select which saturation vapor pressure
424          formula is used and how post-iteration fluxes are set.
425          Temporary set these 2 params according to option SOLVE4TEMP_LEGACY;
426        * New piece of code (not used) to update surf. atmos. heat flux F_ia using
427          the linearized expression to stay consistent with tsurf finding.
428      - seaice_freedrift.F avoid floating exception in sqrt(y) since y=sqrt(x*x)-x
429        can be < 0.
430    o pkg/seaice/seaice_solve4temp.F (SOLVE4TEMP_LEGACY undef):
431      - remove from F_ia (and from it's derivative dFiDTs1) the contribution of
432        conductive heat flux F_c , and add it explicitly when updating tsurf as
433        solution of: Fc = Fia + d/dT(Fia - Fc) *delta.tsurf
434        so that now F_ia has a consistent meaning through the entire routine.
435        This causes differences at truncation level: update output of fwd exp.
436        global_ocean.cs32x15.seaice.
437    o pkg/seaice:
438      - lots of editing/cleaning in seaice_solve4temp.F + better documentation
439        of arrays, sign/direction of fluxes; no effect on results.
440      - replace hard coded 273.16 (=previous value of celsius2K) by celsius2K
441        in seaice_budget_ocean.F & seaice_solve4temp.F (SOLVE4TEMP_LEGACY part);
442        note: this should have been done before changing celsius2K default.
443      - to keep results unchanged, add back old value of celsius2K in verification
444        exp. input*/data : lab_sea (AD), offline_exf_seaice (fwd+AD) & seaice_obcs
445      - replace hard coded seawater freezing temp in seaice_solve4temp.F (part
446        SOLVE4TEMP_LEGACY) of 271.20 (=previous value of celsius2K + default
447        value of SEAICE_freeze) by celsius2K+SEAICE_freeze so that seawater
448        freezing temp is consistent with value in seaice_growth.F ; this causes
449        differences at machine truncation level: update lab_sea AD output (3/4).
450    o pkg/seaice:
451      - mask (in exf_init_fixed.F) atemp,aqh,evap,precip,runoff,lwflx,areamask
452        and climsst/sss even when using seaice (to prevent calculation that might
453        use SST on land); does not affect any verification exp.
454      - apply mask to taux,tauy (in seaice_get_dynforcing.F); update output
455        of lab_sea.fd & lab_sea.hb87 and global_ocean.cs32x15.seaice_dynmix.
456    o pkg/seaice/seaice_growth.F: add mask to avoid non-zero ice thickness
457      over land (non-legacy code)
458    o vectorize salt_plume package:
459      - add extra code to salt_plume_frac and salt_plume_tendency_apply_s
460      - this code computes plumebk everywhere (also over land), thus requires
461        code to avoid divisions by zero and catch the case of kLev=Nr.
462      - efficiency of salt_plume_frac is still sub-optimal
463    o tools (genmake2):
464      - fix makefile NAME specification (option: -makefile NAME) by adding
465        "-f $MAKEFILE" in few places where it was missing including makedepend
466        command (contribution from Paul).
467    
468    checkpoint63i (2012/01/24)
469    o model/src:
470      - add factorized versions of some EOS code to find_rho.F,
471        define USE_FACTORIZED_EOS to turn it on (default for TARGET_NEC_SX)
472    o model/src:
473      - add celsius2K to namelist PARM01; remove unused recip_rhoNil from PARAMS.h;
474      - change default celsius2K from 273.16 to 273.15
475      - to keep results unchanged, add back old value of celsius2K in verification
476        exp. input*/data : aim.5l_cs, 1D_ocean_ice_column, lab_sea (fwd),
477         global_ocean.cs32x15(seaice) & cpl_aim+ocn(input_atm).
478    o model/src: add a little initialisation trick to find_rho.F and find_alpha.F
479      to make TAF generate vectorizable code
480    o pkg/seaice/seaice_evp.F: add code (copied from CICE) that avoids underflows.
481       Turn on by defining SEAICE_EVP_ELIMINATE_UNDERFLOWS. Most compilers
482       have flags that do this more efficiently.
483    o pkg/diagnostics/diagstats_calc.F
484      - for TARGET_NEC_SX fix the treatment of the scaling factor tmpFac=scaleFact
485    o pkg/obcs (with exch2):
486      - derive OB indices in overlap region from OB-InsideMask (in obcs_init_fixed.F)
487        and remove code (in obcs_readparms.F) which was based on EXCH of indices
488        (through buffer) and did not account for exch2 (e.g., CS-grid) topology.
489    o pkg/exf and seaice exp:
490      - change offline_exf_seaice.seaicetd test exp. to use default DIFF1 value (=0)
491        so that switching off area & heff advection flags does not affect results.
492      - change default EXF_LWDOWN_WITH_EMISSIVITY to #define in EXF_OPTIONS.h
493      - keep exp. seaice_obcs & 1D_ocean_ice_column(ad) unchanged (using #undef
494        EXF_LWDOWN_WITH_EMISSIVITY) and, using pkg/exf default emissivities, update
495        results of verification experiments: 1D_ocean_ice_column(fwd),
496        global_ocean.cs32x15.seaice(fwd+ad) & seaice_dynmix(ad), lab_sea (all 8)
497        and offline_exf_seaice (all 4).
498    o pkg/seaice:
499      - remove array YNEG, RIVER, TMIX (replaced by local var) from common block;
500        remove also areaNm1 & hEffNm1 when SEAICE_GROWTH_LEGACY is undef.
501      - fix bug: areaNm1 & hEffNm1 are needed in seaice_growth (SEAICE_GROWTH_LEGACY)
502        but were not filled when resp. SEAICEadvArea=F & SEAICEadvHeff=F and
503        not multi-dim advection;
504      - fix seaice_growth.F to compile with both SEAICE_GROWTH_LEGACY and
505        SHORTWAVE_HEATING #undef.
506    o optim: make Makefile more robust (?)
507    o pkg/obcs:
508      * fix treatment of obcs_read_pickup for TAF
509    o pkg/shelfice:
510      * add missing initialisation of num_shifwflx
511      * new adjoint verification exp. for isomip
512      * change Prandtl and Schmidt numbers from generic formulations
513        (in terms of model diffus. and visc.) to separate runtime
514        parameters, with Holland and Jenkins (1999) default values.
515    o pkg/exf (interpolation):
516      - extended input field (2 rows) near the N & S poles:
517        * fill in with the symetric value (when even Nb of data in longitude)
518        * add average value at the poles only for scalar quantities ; for vector
519          component interpolation, skip the averaging and keep duplicated values,
520          unless the 2 components have same location (uvInterp=T) in which case
521          interpolate the 2 components together using S/R EXF_INTERP_UV.
522      - new S/R EXF_INTERP_UV to interpolate the 2 components of a vector field
523        together: this allows to account properly for local orientation when
524        averaging at N & S pole.
525      - add CPP option EXF_USE_OLD_INTERP_POLE to recover old results regarding
526        exf-interpolation near N & S poles. Undef by default.
527      - add debug check/print on 1rst iter if debugLevel >=2.
528    o pkg/exf:
529      - change masking flags definition (no longer "parameter"), put them in
530        common block and set them in S/R EXF_INIT_FIXED.
531      - change recognized masking flag from s,u,v to c,w,s since the mask
532        to use (maskC,W,S) depends on position on model grid and has little to
533        do with scalar/vector difference; fix masking if using P-coordinates.
534      - fix masking of wind-stress (was wrong if interpolated or read on A-grid)
535        and update results of exp. global_with_exf (x2).
536      - fix setting of zenith-angle table when SHORTWAVE_HEATING is undef.
537    o pkg/obcs
538      - S/R obcs_calc_stevens: fix a small bug (gammat -> gammas where appropriate)
539    o pkg/exf (interpolation):
540      - assume periodicity in X only if input field cover full longitude range.
541      - improve search for lat. index (supposed to be faster, in ~log2(ny) steps,
542        and should vectorise).
543      - fix input lat of the 2 added row (in case we provide N.pole data).
544    
545    checkpoint63h (2011/12/30)
546    o pkg/seaice:
547      - change declaration of UVM from _RL to _RS in order to get B-grid
548        uIce,vIce monitor when _RS = real*4
549    o pkg/offline:
550      - new S/R OFFLINE_RESET_PARMS for resetting main-model params (switch off flags);
551      - compute vertical velocity if not read from file (switch on exactConserv
552        & staggerTimeStep);
553      - fix output of ptracer monitor iter & time for default PTRACERS_monitorFreq.
554    o verification:
555      - update grid-files (in tutorial_held_suarez_cs/input and fizhi-cs-32x32x40/input)
556        with grid-angle generated using "utils/matlab/cs_grid/cubeCalcAngle.m":
557        fix Pb in yG definition @ 2 missing corners (previously yG was averaged);
558      - update output of exp. global_ocean.cs32x15.viscA4 after changing
559        grid-file angles (used here for coriolis-3d);
560      - remove (or gzip) few files not needed to run fizhi-cs experiments.
561    o pkg/exf (vector interpolation):
562      - rotate vector component toward local grid-axis orientation using grid-angles
563        (stored in GRID.h) instead of locally computed rotation angle; keep old code
564        available with exf option EXF_USE_OLD_VEC_ROTATION (undef by default).
565    o pkg/seaice:
566      - allow to compile with exf options ALLOW_ATM_TEMP or ALLOW_DOWNWARD_RADIATION
567        undefined. Fix and remove the stop when ALLOW_RUNOFF is undefined.
568    o pkg/PKG_OPTIONS.h files:
569      - move #include "CPP_OPTIONS.h" just after #include "PACKAGES_CONFIG.h",
570        outside of the #ifdef ALLOW_THISPKG / #endif block.
571      - update verification/*/code/PKG_OPTIONS.h files.
572    o add a verification experiment (offline_exf_seaice/input.seaice) that test
573      the B-grid LSOR solver
574    o pkg/seaice: sort out emissivity and long wave radiation step 2:
575      - add emissivity for snow and ice as new run-time parameters
576        (unfortunately) that default to the corresponding exf values; this
577        changes results in most verification experiments so that for backward
578        compatibility these parameter have to be set explicitly to inconsistent
579        values (ugly);
580      - the exf-flag EXF_LWDOWN_WITH_EMISSIVITY then gets rid off the hard-wired
581        emissivities of 0.97 associated with lwdownloc in S/R seaice_solve4temp
582        until we agree how to handle this bug properly
583    o pkg/exf (interpolation):
584      - add a set of run-time param ({inputfield}_interpMethod), one for
585        each interpolated input field, to select the interpolation method
586        with a value of zero switching off the interpolation;
587      - print interpolation parameters to standard output;
588      - refine exf_check.F accordingly ; stop if USE_NO_INTERP_RUNOFF is defined
589        (to use instead runoff_interpMethod=0 in data.exf).
590      - simplify default setting of interpolation parameters (for all fields,
591        set position to match model grid cell-center position, leading to trivial
592        interpolation in case of regular Lat-Lon grid) and fix for the case of
593        non-uniform delY.
594    o pkg/exf/exf_radiation.F: add the factor ocean_emissivity to lwdown, for
595       within #ifdef EXF_LWDOWN_WITH_EMISSIVITY/#endif. Unless ocean_emissivity=1.
596       this factor is absolutely required, because the lw exitance (= out-going
597       long wave radiation) is emissivity*stefanBoltzmann*T^4 + rho*lwdown,
598       where the reflectivity rho = 1-emissivity for conservation reasons. Once
599       this is established, we can remove the CPP-Flag (if we want to).
600    o pkg/seaice:
601      - qualify a stop statement in S/R seaice_check: EXF_READ_EVAP and
602        ALLOW_BULKFORMULAE are only required if SEAICE_EXTERNAL_FLUXES is defined
603      - sort out emissivity and long wave radiation, step 1: make SEAICE_emissivity
604        what the name implies (and not emissivity*BoltzmannConstant), this means
605        the old default value of 5.5e-8 now means
606        5.5e-8/5.670e-8 = 0.97001763668430343479 as ocean_emissivity in
607        S/R exf_readparms
608      - FV-discretization of the B-grid LSOR solver, turn on with
609        SEAICE_LSRBNEW. This new solver also involves a slight re-organization
610        of the calling routine dynsolver, so that B and C-grid code look a
611        little more alike.
612      - fix index bugs in ostres.F (B-grid code)
613    o pkg/seaice/seaice_ocean_budget.F: change (unused) code to make it look better
614    o pkg/seaice/seaice_readparms.F: make ocean_emissivity*stefanBoltzmann the
615      default for SEAICE_emissivity, if useEXF; requires setting a wrong
616      parameter value in global_ocean.cs32x15/input.seaice/data.seaice for
617      backward compatiblity
618    o model/src: use sigmaR in calc_ivdc
619    
620    checkpoint63g (2011/12/16)
621    o pkg/seaice/seaice_growth.F:
622      fix heat conservation of the coupled ocean-seaice system.
623      when SEAICE_HEAT_CONSERV_FIX is defined, the mismatch of
624      solid vs liquid water treatment is resolved via QNET.
625    o pkg/seaice/seaice_growth.F:
626      add missing term for sublimation in saltFlux, which was breaking conservation.
627    o pkg/seaice/seaice_model.F:
628      Remove this patholigical case treatment in evolution branch,
629      where it is un-necessary and breaks conservation.
630      Update global_ocean.cs32x15/results accordingly for
631      output.seaice.txt output_adm.seaice.txt and output_adm.seaice_dynmix.txt
632    o model/src:
633      useRealFreshWaterFlux: remove masking of EmPmP (using maskInC) in
634      external_forcing_surf.F and apply mask directly in S/R SOLVE_FOR_PRESSURE.
635    o pkg/obcs:
636      modify Stevens boundary conditions so that S/R obcs_calc_stevens computes
637      tendency for temperature and salinity that is then applied to update
638      theta and salt in S/R obcs_apply_ts; this requires proper masking of all
639      horizontal advection and diffusion contributions on the boundary (in
640      S/Rs gad_advection, gad_calc_rhs, gmredi_rtransport, gmredi_calc_diff), and
641      removing the mask in S/R timestep_tracer. The advantage of this approach is
642      that the updated tracer values include contributions from the surface
643      forcing and vertical diffusion.
644      This modification changes exp4.stevens because of vertical diffusion.
645    o model/src:
646      change non-curvilinear grid setting to also work with exch2 + blank tiles:
647      - move delX,delY to new header file (SET_GRID.h) and adjust length to 1rst
648        face dimensions.
649      - new S/R INI_LOCAL_GRID to define model tile-local grid (using same units
650        as delX,delY) and called from S/R INI_CARTESIAN_GRID, INI_CYLINDER_GRID
651        and INI_SPHERICAL_POLAR_GRID.
652      change test-experiment global_ocean.90x40x15:
653      - split the domain in many more tiles (9x4 tiles of 10x10 each);
654      - switch to exch2 and remove 1 blank-tile (but only for MPI test).
655      - update results of both test (std & dwnslp).
656    o pkg/diagnostics/diagstat_calc.F: fix problem with non-initialised halos in
657       tmp-fields for TARGET_NEC_SX at the cost of extra loops and less vectorisation
658    o model/src:
659      - take sigma-coords related code out of update_etah.F into new S/R UPDATE_ETAWS
660        and fix initialisation when using sigma-coords.
661    o model/src:
662     - improve Gael's changes from Jan 14, 2011 "addition of an 'update' of hfacc etc.
663       to their current value at the beginning of forward_step.F": add a new run-time
664       switch "doResetHFactors" (default=false) and use it to do (or not) the resetting.
665     - set doResetHFactors=T in the following test exp:
666        global_ocean.90x40x15/input (rStar) & input.dwnslp (linFS),
667        global_ocean.cs32x15/input.seaice (rStar), hs94.cs-32x32x5/input.impIGW (linFS)
668        and tutorial_global_oce_in_p (nonLinFS in p)
669    o pkg/ecco
670      - added IES cost term
671    o verification/advect_xz
672      - scale down the depth by 1/100 (from 200 km to just 2.km)
673      - add secondary test using divergent flow, r-star and implicit vertical advection.
674      - add note (check_conserve_TS.txt) and matlab script to check global
675        conservation of T & S with NonLin-FreeSurf and Adams-Bashforth.
676    o pkg/rbcs:
677      - add missing relaxUFile & relaxVFile in namelist (in rbcs_readparms.F).
678    o pkg/obcs (Stevens BCs):
679      - fix various problems in the phase speed computations of the Stevens
680        boundary conditions:
681        - sign error for western and southern boundaries,
682        - time tendencies were underestimated by factor of dTracerLev and some just
683          zero (for multidim advection schemes) -> now estimate time tendencies
684          from difference between previous (n) time level and the one before (n-1);
685          this requires storing a field per tracer per boundary, also in the pickup
686          files.
687        - replace deltaTmom in cflMer/Zon computation with dTracerLev
688        - set default phase velocity to cflMer/Zon
689      - update verification experiment exp4.stevens
690    o pkg/generic_advdiff (implicit_r):
691      - fix implicit vertical advection conservation with AB and/or NonLin-FreeSurf
692        (remove Tr*d/dz(w) in gad_implicit_r.F and add it in gad_calc_rhs.F);
693      - fix implicit vertical diffusion or advection with NonLin FreeSurf
694        (was using current recip_hFacC instead of future recip_hFacC): set future
695        recip_hFac in thermodynamics.F and pass & use it in all vertical implicit
696        solver S/R ;
697      - fill diagnostics of vertical advective fluxes (computed from tendency)
698        when using implicit vert. advection;
699      - update output of exp that uses NonLin-FreeSurf & implicit vertical diffusion:
700         global_ocean.90x40x15 (fwd+AD), global_ocean.cs32x15 (4 fwd +4 AD),
701         tutorial_global_oce_in_p (fwd), tutorial_tracer_adjsens (AD)
702         and cpl_aim+ocn (used in ocean); to be fixed: bottom_ctrl_5x5.
703    o pkg/diagnostics:
704      - add diags for T & S tendency which goes through Adams-Bashforth.
705    
706    checkpoint63f (2011/11/30)
707    o pkg/obcs/obcs_calc_stevens.F:
708      - join some loops to reduce number of if-statements
709      - fix a bug in code for northern and southern boundaries.
710    o pkg/seaice/seaice_init_varia.F
711      - undo resetting UVM=0 that has slipped in unnoticed in r1.49 and
712        caused zero ice-velocities for the B-grid code
713    o pkg/seaice/seaice_init_fixed.F
714      - fix a bug in the initialisation of the second metric terms
715        k2AtC and k2AtZ: k2AtC was set to the value of k2AtZ and k2AtZ was 0.
716      - this affects all seaice configurations with useCurviLinearGrid = .true.
717        and SEAICEuseDynamics = .true. (default) and SEAICEuseMetricTerms
718        = .true. (default)
719      - the only verification experiment affected is global_ocean.cs32x15:
720        icedyn, seaice, and seaice_dynmix (AD)
721    o pkg/thsice/thsice_diagnostics_state.F
722      - only for TARGET_NEC_SX: initialise all of tmpFld, so that overlap does
723        not contain garbage that can lead to surprises in diagstats_calc.F
724    o model/src:
725      - move bi,bj loops inside INTEGR_CONTINUITY ;
726      - call INTEGR_CONTINUITY directly from forward_step.F
727        (previously called from momentum_correction_step.F)
728      - call UPDATE_ETAH from integr_continuity.F and update initialise_varia.F,
729        forward_step.F and pkg/ecco/the_main_loop.F
730    o model/src/do_oceanic_phys.F:
731      - reset addMass to zero only if useICEFRONT ;
732      - separated k-loop for rhoInSitu calculation ;
733      - add 2 diagnostics for wVel*delta^k(Rho) at constant pressure (= WdRHO_P)
734        and at constant T,S (= WdRHOdP);
735      NOTE: change diagnostics WRHOMASS : this is now simply the Vertical transport
736        of In-Situ Density (Anomaly) (=wVel*rho^bar-k) (previously was Vertical
737        transport of locally-referenced potential density);
738        to recover old diag: (WRHOMASS)_old = (WRHOMASS)_new -1/2 * (WdRHOdP)
739    o gluemnc:
740      - replace ncrcat with ncks when adding variables to *.glob.nc
741      - change the way variables without record dimensions are handled so that
742        files that have variables with and without record variables can be glued:
743        add a record dimension with a new unique name to be able to differentiate
744        between variable with and without a-prior record dimensions. Remove
745        this record dimension before adding the variable to the *.glob.nc file.
746        This procedure automatically works also for grid.*.nc files that do not
747        have any record dimension.
748    o verification/cpl_aim+ocn:
749      - generate new reference output on baudelaire (gfortran, mpich2) (previously
750        from old aces-grid cluster, ao + ifort) and update 'run_cpl_test' script.
751    o pkg/obcs/obcs_calc_stevens.F:
752      - add code for northern and southern boundaries.
753      - reorder some loops to save some operations and so that drFBar can be scalar
754    o model/src:
755      - re-arrange extrapolation calculation in Adams-Bashforth S/R (affects machine
756        truncation) and add diagnostics for Adams-Bashforth tendency increment.
757      - update test-exp. AD output:
758        1D_ocean_ice_column, bottom_ctrl_5x5, lab_sea.noseaicedyn, obcs_ctrl;
759      and FWD output: exp4 (x3), fizhi-cs-32x32x40, fizhi-cs-aqualev20,
760        front_relax (x3), global_ocean.90x40x15 (x2), global_ocean.cs32x15 (x5),
761        global_ocean_ebm, ideal_2D_oce, internal_wave, isomip (x3), lab_sea (x4),
762        matrix_example, MLAdjust (x5), natl_box (x2), tutorial_advection_in_gyre,
763        tutorial_global_oce_in_p, tutorial_global_oce_latlon and
764        tutorial_plume_on_slope.
765    o pkg/diagnostics/diagstats_calc.F: add special code for TARGET_NEC_SX
766      that vectorises. This code uses 3 extra 2D fields, F90 array assignments
767      and F90 intrinsic routines SUM, MINVAL, MAXVAL, but since TARGET_NEC_SX
768      does not even come with an F77 compiler anymore, this should not be
769      a limitation
770    
771    checkpoint63e (2011/11/06)
772    o pkg/seaice adjoint of LSR:
773      - substantially rework STORE dirs.
774      - add new flag SEAICE_LSR_ADJOINT_ITER and parameter SOLV_MAX_FIXED
775        this flag will do SOLV_MAX_ITERS but only store SOLV_MAX_FIXED fields
776        and only perform SOLV_MAX_FIXED adjoint iters.
777        If flag SEAICE_LSR_ADJOINT_ITER is undef-ined, the store in the iteration
778        always goes to same record, meaning that the last forward field will be
779        the one used in the adjoint - an approximation.
780      - now produces non-zero LSR-related gradients, and acceptable gradients for
781        An's zonal (x-z) test case (to be checked in)
782      - lab_sea: produces acceptable gradients for lab_sea with forward/backward LSR
783        (but these are screwed up by the thermodynamics in the first place);
784        reduce from 4 to 3 timesteps to avoid t.d. issue as temporary solution;
785        output_adm.txt also reflects changes to seaice_lsr
786      - global_ocean.cs32x15:
787        * the "default" input_ad.seaice has been re-defined to always exclude dynamics
788          (output_adm.seaice.txt was updated)
789        * new input_ad.seaice_dynmix tests a forward LSR / backward free-drift
790          (output_adm.seaice_dynmix.txt)
791    o test-exp. exp4+stevens:
792      - switch off pTracers and nonHydrostatic (restart problems with NH); update output
793    o pkg/seaice (lsr solver):
794      - put coriolis term into FORCEX,Y (as in seaice_evp.F; previously in rhsU,V only);
795        update output (change truncation) of FWD test exp lab_sea & global_ocean.cs32x15
796      - fix SEAICEuseFREEDRIFT for new OBCS version (ndef OBCS_UVICE_OLD)
797      - new parameter "LSR_mixIniGuess" allows (if=2,4) to mix free-drift solution
798        into initial guess for linearised solver; use weight ~ (1/err)^2,4.
799      - compute (with new S/R) and print initial (+ free-driff sol. if available)
800        and final residual of linearised system.
801    o pkg/pp81: add diagnostics for vertical eddy viscosity and diffusivity
802      (requires new subroutines pp81_init_fixed.F/pp81_diagnostics_init.F)
803    o pkg/obcs: Stevens BCs (still only for east and west)
804      - fix Stevens BCs by using intermediate velocities of previous
805        time step as "baroclinic" contribution rather velocity of one grid cell
806        inside the boundaries; more consistent but makes the entire treatment
807        more complicated, requires new pickup files and two new S/Rs:
808        obcs_copy_uv_n and obcs_save_uv_n
809        keep old version with flag OBCS_STEVENS_USE_INTERIOR_VELOCITY
810        (undefined by default)
811      - silently move computation of some grid factors into separate loops to
812        save some recomputations
813      - add a hack for non-linear free surface
814      - add a verification experiment to exp4 that tests this code
815    o make gluemnc/xplodemnc work with (moron) non-GNU shell tools
816    
817    checkpoint63d (2011/10/25)
818    o pkg/obcs + seaice-dynamics:
819      - new implementation calls OBCS_APPLY_UVICE (in seaice_dynsolver.F) before
820        solving for uIce,vIce and prevent SEAICE_LSR or SEAICE_EVP to modify OB
821        values (consistent with an implicit method).
822      - add option OBCS_UVICE_OLD (in OBCS_OPTIONS.h, defined by default) to
823        return to older implementation (same results as before); note that none of
824        the "experimental" OBCS_SEAICE options are implemented in the new version.
825      - switch test exp. seaice_obcs to use new version (update output).
826    o pkg/seaice:
827      - add few stop (B-grid & CS-exch, B-grid & obcs, AUTODIFF & SEAICE_maskRHS)
828      - add parenthesis in Water-Ice drag calculations (evp & lsr);
829      - in seaice_lsr.F, simplify and fix AA3 setting in case sNx or sNy=1;
830        and fix case SEAICE_waterDrag=0 (but unstable if no or little seaice)
831      - update output of test exp lab_sea that uses evp or lsr (fwd+ad)
832        and global_ocean.cs32x15 (icedyn & seaice fwd+ad).
833    o pkg/layers:
834      - Include potential density as new coordinate (Thanks to David Munday)
835    o pkg/dic:
836      - Remove subroutine CALC_PCO2_APPROX_CO3 from carbon_chem.F and add
837        carbonate computation/output to CALC_PCO2_APPROX
838    o pkg/generic_advdiff
839      - make TAF generate code that vectorizes:
840        gad_dst3fl_adv_*.F, gad_u3c4_impl_r.F
841    o model/src:
842      - improve vectorization also for adjoint code of
843        solve_tridiagonal and solve_pentadiagonal. As this requires up to
844        5 new 3D-fields, this code is only turned on for the combination of
845        ALLOW_AUTODIFF_TAMC and TARGET_NEC_SX. Also remove error message
846        for singular matrix check (only for TARGET_NEC_SX).
847      - remove hard-wiring of CPP-flag ALLOW_SOLVERS_KLOOPINSIDE to
848        ALLOW_AUTODIFF. This flag now needs to be set outside of
849        solve_tri/pentadiagonal.F
850    o pkg/exf:
851      - fix previous modif in exf_readparms.F (revision 1.66: treatment of
852        optional namelist EXF_NML_OBCS).
853      - add many debug-print (to trace down where pkg/cal error msg comes from)
854    o pkg/mom_vecinv/mom_vi_hdissip.F
855      - rearrange loops so that vectorization is improved and in particular
856        the adjoint routine vectorizes. The code is a little longer now, but I
857        think easier to read.
858        Note: CPP-flag MOM_VI_ORIGINAL_VISCA4 is not tested.
859    o pkg/seaice:
860      - allow to specify initial seaice velocity from files (uIceFile,vIceFile)
861    o pkg/exch2:
862      - alternative code (without tile x tile matrix) for cumulated (global) sum;
863        used as default; keep using matrix version in adjustment.cs-32x32x1.
864    o tools/build_options:
865      - after merging some MPI and/or multi-threads specific optfiles so that
866        the modified default optfile support both built (using genmake2 -mpi
867        for the MPI built, using genmake2 -omp for OpenMP built),
868        move now obsolete optfiles to tools/build_options/unsupported/
869       (add copy of email sent to support list in doc/optfiles_changes.txt)
870    
871    checkpoint63c (2011/09/28)
872    o pkg/ebm:
873      - fix ebm_zonalmean.F for several procs in Ydir (nPy > 1); update output of
874        test exp. global_ocean_ebm (affects machine truncation, 12 digits for cg2d)
875    o pkg/seaice (SItracer pickup)
876    * Simple code for pickup of SItracer fields (#define ALLOW_SITRACER)
877      To be done:
878      - thorough testing of missing fields in S/R seaice_read_pickup
879      - thorough matching between generic tracers and specific fields used
880        (e.g. volume-weighted age, area-weighted age, salinity, ...)
881    o pkg/grdchk:
882      - all procs calculate and print finite-difference gradient (for testreport)
883      - change description output used by testreport;
884      - AD testing: also compare and report Finite-difference gradient;
885        => update all output_adm*.txt
886    o test exp. global_ocean_ebm:
887      - switch back useRealFreshWaterFlux (no problem anymore with run-off);
888        and turn on exactConserve; update (fwd) output.
889    o pkg/seaice (LSR):
890      - print to STDOUT number of solver iterations at SEAICE_monFreq interval.
891      - modify solver to deal cleanly with u/v switch at face edges (CS-grid):
892        * identical results with non-CS topology (but save up to half of EXCH calls)
893        * no much changes in cs-32 verification tests since no ice at face edges
894         (differences due to convergence criteria, since nb of iterations changed)
895        * expect some differences on lat-lon-cap grid.
896        update FWD results of global_ocean.cs32x15 test exp. (icedyn & seaice)
897    o pkg/exch2:
898      - add new CPP option to disable Cumul-Sum matrix (to save storage when using
899        many tiles); until alternative coding is added, just add a stop.
900    o pkg/kpp:
901      - move ptracer/salt correction to KPP diffusivity from calc_3d_diffusivity.F
902        to S/R KPP_CALC_DIFF_PTR (+ add tracer-index to argument list).
903    o optfiles:
904      - merged few MPI specific (*+mpi*) and multi-threads specific (*+mth) optfiles
905        into corresponding standard one, which now support different build:
906        (when using "genmake2 -mpi" for MPI built, "genmake2 -omp" for OpenMP built)
907      - add "darwin_amd64_gfortran" optfile (initially from Constantinos, tested by Gael)
908    o pkg/obcs (seaice):
909      - add missing EXCH for uIce,vIce after applying OBCS;
910      - remove S/R EXF_SWAPFFIELDS_X/Y , disable S/R EXF_SET_OBCS_X/Y by adding
911        argument = number of levels to S/R EXF_SWAPFFIELDS_XZ/YZ and S/R
912        EXF_SET_OBCS_XZ/YZ ; update obcs_exf_load.F;
913      - fix EXF_SET_OBCS_XZ/YZ for multi-threaded (assuming loaded arrays are shared)
914      - verification exp. seaice_obcs: split domain in 2 tiles ; add SIZE.h_mpi
915        and eedata.mth for MPI and mutlti-threaded testing.
916    o pkg/flt:
917      - make FLT EXCH working with multi-threads (and MPI + multi-threads);
918      - use buffer for floats IO (trajectories & profiles); size set in FLT_SIZE.h;
919      - fix pickup and trajectories + profiles output with multi-threads;
920      - add parameter to select group of fields to write along trajectory and
921        profile (default unchanged);
922      - only call PORT_RAND* function when flt_noise <> 0;
923      - add multi-threaded test for verification exp. flt_example.
924    o eesupp/src:
925      - fix S/R ALL_PROC_DIE for MPI+multi-threads.
926      - USE_OMP_THREADING: check that number of threads (from eedata) matches
927        actual number (from env.var. setting).
928    o pkg/ebm:
929      - fix multi-threading in ebm_area_t.F ; clean-up EBM.h header file.
930      - add multi-threaded test for verification exp. global_ocean_ebm
931    
932    checkpoint63b (2011/08/29)
933    o pkg/ebm:
934      - fix sign of runoff;
935      - update directly forcing fields (Qnet,EmPmR) to use standard
936        external_forcing_surf.F (remove ebm_forcing_surf.F);
937      - avoid loading forcing fields a 2nd time (1rst time from ini_forcing.F);
938      - set either tauThetaClimRelax (in data) or tauThetaZonRelax (in data.ebm)
939        and apply relaxation towards corresponding SST field (2-D map or ZonAver).
940      - update global_ocean_ebm parameters file data and update output (fwd+ad).
941    o verification/matrix_example:
942      - split domain in 8 tiles (2x4); add SIZE.h_mpi and eedata.mth for
943        MPI and mutlti-threaded testing.
944    o pkg/matrix:
945      - change name of S/R MATRIX_INIT to S/R MATRIX_INIT_VARIA ;
946      - fix for multi-tiles (add bi,bj indices to exp/impMatrixCounter);
947      - fix for multi-threaded (remove DATA statement);
948      - use standard DIFFERENT_MULTIPLE function;
949      - add MATRIX_OPTIONS.h
950    o verification/matrix_example:
951       To allow to split the domain in several tiles, change the domain size
952        from 31x31 to 32x32 by adding 1 row (on Southern side) + 1 column (on
953        Western side) of land points.
954    o (*_)write_pickup:
955      - fix few bugs in mypackage_read/write_pickup.F
956      - in MDS_WR_METAFILES calls, replace "myTime" by a local copy into
957        array of length 1 (was caught by compiler syntax-check).
958    o pkg/diagnostics (velocity potential solver):
959      - fix initialisation of main diagonal matrix (for overlap values)
960    o tools/build_options:
961      - towards single optfile for MPI and non-MPI built: merge few +mpi optfile
962        into previously non MPI one (linux_am64 pgf77,open64,pathf90,ifort11)
963      - linux_amd64_gfortran: merge +mpi_generic version into standard optfile:
964        * move IEEE flags to DEVEL section; take IEEE flags from +mpi_generic ;
965        * FAST case: for now, keep -O3 with ini_masks_etc.F in NOOPTFILES list;
966        and use "-devel" testreport option for standard testing on baudelaire.
967    o pkg/grdchk:
968      - Assume that all gradient-check position are within the same tile
969        corresponding to global indices (iGloTile,jGloTile) and that
970        positions (i,j indices or nbeg) are local to this tile;
971      - set tile local-indices and proc. number according to tile global-indices;
972      - remove grdchkwhichproc from namelist (retired param);
973      - send adjoint gradient to all procs so that all procs print it to STDOUT;
974      - switch on MPI test for global_ocean.90x40x15 AD test experiment.
975    o adding package bbl (Bottom Boundary Layer)
976      description in MITgcm/pkg/bbl/bbl_description.tex
977      example/test experiment in MITgcm_contrib/bbl
978    o adjoint verifications
979      - changed 5 experiments to multi-tiles
980        * global_ocean.90x40x15
981        * obcs_ctrl
982        * offline_exf_seaice
983        * tutorial_dic_adjoffline
984        * tutorial_tracer_adjsens
985        changed reference output for those that crossed tile boundaries
986        (changed choices of gradient check positions)
987      - with same tiling, switch on MPI test for the last 4 (add SIZE.h_mpi)
988      - temporary bug fix in grdchk_loc.F for obcs
989    o genmake2 & testreport
990      - add target "obj" (just for OBJFILES files) to Makefile;
991      - add option to specify FEXTRAFLAGS on command line.
992    o pkg/mypackage:
993      - remove bi,bj arguments from argument list of S/R MYPACKAGE_CALC_RHS
994    
995    checkpoint63a (2011/08/02)
996    o pkg/diagnostics (velocity potential):
997      - fix velocity-potential calculation when using OBCS: balance net inflow
998        at each level (new S/R OBCS_DIAG_BALANCE).
999      - fix some of the problems with OBCS in stream-function calculation.
1000    o pkg/exf/exf_readparms.F
1001      - make treatment of optional namelists (EXF_NML_04, EXF_NML_SGRUNOFF,
1002        EXF_NML_OBCS) more consistent, so that you need not have these lists
1003        in data.exf when they are not used.
1004    o optim/optim_readdata.F:
1005      - add some output about obcs variables that might help debugging
1006      - add a check about nvarlength
1007    o pkg/ctrl: once again, fix computation of endrec in s/r ctrl_init_rec
1008    o pkg/diagnostics (velocity potential):
1009      - fix mask for OBCS (still problems in stream-function with OBCS);
1010      - add specific parameter (default = main code CG2D params) for solver;
1011      - in case of poor convergence, use solution corresponding to lowest residual.
1012    o pkg/seaice/seaice_growth.F: small changes that permit vectorizable
1013      adjoint code. In general statements like tmpscal=fld(i,j) are problematic
1014      and should be avoided where possible.
1015    o model/src (rStar):
1016      - include r* effect on reference-state (PhiRef) in totPhiHyd
1017        (so that it's really the potential anomaly at the cell center);
1018        affect solution only if z* with full pressure in EOS.
1019      - test-exp global_ocean.90x40x15: reduce viscA4 (was not stable) and
1020        update output (because of z* in totPhiHyd and viscA4 changes);
1021      - keep the previous diagnostics as "PHIHYDcR" (closer to potential anomaly
1022        @ constant r) until interpolation at constant r is implemented.
1023    o pkg/diagnostics
1024      - fix RCENTER diagnostics in case cell center is not at interface middle
1025    o add code for TEOS-10 (www.teos-10.org, McDougall et al. 2011). Use
1026      this eos with eosType = 'TEOS10', in data (PARM01). This eos implies
1027      that THETA and SALT are "conservative temperature" and "absolute
1028      salinity"
1029    o pkg/ctrl
1030      - fix computation of endrec in s/r ctrl_init_rec
1031      - ctrl_pack/unpack_*: remove unused variables and some obsolete code
1032    o pkg/seaice/seaice_growth.F
1033      - fix recomputation with FENTY_AREA_EXPANSION_CONTRACTION code,
1034        remove then obsolete STORE directives
1035      - fix STORE directives for tice and tices, so that only the
1036        appropriate part of the fields are stored (and not the entire
1037        field); update global_ocean.cs32x15.seaice AD output.
1038      - cosmetic changes: adjust CPP flags and indentation for better
1039        legibilty
1040    o pkg/autodiff: add mnc-output of adBottomDragFld (code contributed by
1041      Chris Wilson)
1042    o pkg/gmredi:
1043       Add Sub-Meso Eddies parameterisation from Baylor (for now, disabled with TAF),
1044       and test it in verification exp. "front_relax.bvp" (update output.bvp.txt)
1045    
1046    checkpoint63  (2011/07/11)
1047    o pkg/exch2:
1048     - rename+move: nTiles in W2_EXCH2_PARAMS.h --> exch2_nTiles in W2_EXCH2_TOPOLOGY.h
1049     - exch2 version of Cumul-Sum routine: S/R W2_SET_MAP_CUMSUM set up the
1050       (2*nTiles)x(nTiles) Cumul-Sum matrix and Master Proc collects all tiles X,Y
1051       increments, calculates Cumul-Sum @ tile origin and sends results to each tile.
1052    o pkg/diagnostics:
1053     - deal with pairs of post-processed diags which are computed together; in
1054       particular, re-order list of diags within 1 file to save 2nd computation.
1055     - add S/R to compute velocity stream-function (called after velocity-potential
1056       calculation) from divergence free transport -> new diagnostics "PsiVEL".
1057     - add parameter to select grid-point location where PsiVEL == 0.
1058    o eesupp/src:
1059       new S/R to calculate cumulated sum on tiled array, corner grid-cell location
1060       (specific S/R needed with exch2 topology - for now, just print an error msg)
1061    o pkg/shelfice
1062     - Implement friction velocity-dependent transfer coefficients following
1063       Holland and Jenkins, JPO, 1999
1064       Original code by M. Losch with small modifs.
1065       Enable with CPP option SHI_ALLOW_GAMMAFRICT
1066       and runtime flag SHELFICEuseGammaFrict
1067    o verification lab_sea & global_ocean.cs32x15:
1068     - use tools/xmakedepend (instead of cyrus_makedepend, in genmake_local):
1069       does not miss some dependencies (but is slower) and also works with many files
1070       (default makedepend limitation for AD built).
1071     - use cyrus_makedepend in adjustment.128x64x1 (so that it still tested).
1072    o pkg/diagnostics:
1073     - add run-time parameter "useMissingValue" (def=False) to fill land-point
1074        (i.e., where mask=0) with MissingValue ; used only in MNC output file.
1075       This replaces CPP-option DIAGNOSTICS_MISSING_VALUE.
1076     - Extend the use of "missing_value" setting from data.diagnostics for the case
1077       of counter-diagnostics (where fraction-weight is zero). This applies both to
1078       MNC and MDS output files.
1079    o pkg/seaice/seaice_growth.F:
1080      - add 'a priori' cap of latent heat flux based on actual mass considerations
1081        when SEAICE_ADD_SUBLIMATION_TO_FWBUDGET is used in conjunction with the
1082        non-legacy seaice_solve4temp.
1083      - add diagnostic of the residual sublimation freshwater flux (the freshwater
1084        flux taken from the ocean if the total actual latent heat fluxes exceed
1085        the maximum)
1086      - remove the CPP switch around the *_FWbySublim unit change and move diagnostic
1087       fill for SIatmQnt, SIfwSubl, SIatmFW to the end of seaice_growth.F.
1088      - add diagnostic of the actual sublimation freshwater flux (that is 0. ifndef
1089       SEAICE_ADD_SUBLIMATION_TO_FWBUDGET) and of the latent heat flux (evap+sublim).
1090      - bug fix : frWtrAtm needs a_FWbySublim ifdef SEAICE_ADD_SUBLIMATION_TO_FWBUDGET.
1091      - bug fix : missing part to Martin's r_FWbySublim pathological case fix.
1092    o verification 1D_ocean_ice_column:
1093       made model domain truly 1x1x23 instead of 5x5x23 with only center cell (3,3,:) wet
1094       update results
1095    o pkg/diagnostics:
1096     - Implement setting of "Post-Processed" diagnostics (corresponding to gdiag(5)='P')
1097       which are not filled-up but computed from other diags ; In this case, the mate
1098       diag points to the primary (filled-up) diag to used for post processing.
1099     - Update Velocity-potential computation using post-processed diag framework.
1100     ==> Change the ordering of fields and time-periods in MDS output file
1101       when using periodic averaging: now writes one time record with the full set
1102       of fields for this time period, then the next time reccord (it used to be
1103       one field with the full set of time records then the next field).
1104         Note: this is now similar to NetCDF (MNC) output file. <==
1105    
1106    checkpoint62z (2011/06/21)
1107    o adjoint monitor:
1108     - Add adjoint monitor output for packages exf, seaice
1109       and update relevant testreport output
1110    o pkg/seaice:
1111     - re-order diags inits so that they appear in order in available_diagnostics.log
1112     - added diags: hsnow thermo. rates of change, area preceeding ridiging process,
1113       area/heff/hsnow preceeding thermodynamic growth/melt.
1114     - modified diag: SIdA; output actual effect, as the description states.
1115     - modified description: SIqneti, SIqneto, SIuheff, SIvheff, SIdAb*, HSNOW.
1116     - retired redundant diags: SIyneg, SIfice, SIsnwice, SIthdgrh.
1117       (SIyneg->SIdHbOCN; SIfice->SIdHbATC; SIsnwice->SIdHbFLO;
1118        and SIthdgrh->SIdHbOCN+SIdHbATC+SIdHbATO)
1119     - modified diags (2) : switch all SIdA*, SIdH*, SIdS* from delta to rates.
1120     - added diagnostics for seaice generic tracers (SItr*).
1121     - added SItrUnit and SItrNameLong run time param (for SItr* diags).
1122     - in diag names, replaced 'PrTh' abbrev. of 'preceeding thermo' with 'PT'.
1123     I. Fenty: 18-Jun-2011:
1124     Minor changes to seaice package:
1125     1) Retired old variables (A22, SEAICE_lhsublim, areaMax, areaMin, hiceMin) and
1126        added some new ones (SEAICE_area_reg, SEAICE_hice_reg, SEAICE_area_floor)
1127       - Differentiated "regularization variables" from "floor variables"
1128        * areaMin became SEAICE_area_reg (old A22) and SEAICE_area_floor
1129        * hiceMin became SEAICE_hice_reg (old hiceMin)
1130          (with _reg meaning regularization variable)
1131       - SEAICE_lhSublim becomes lhSublim, the sum of SEAICE_lhEvap and SEAICE_lhFusion
1132        so as to ensure energy conservation when going between phases
1133      - A22 was not used anywhere
1134     2) Changed regularization procedure for heffActual and hsnowActual to ensure
1135        well-boundedness and smooth adjoint in seaice_growth.F
1136     3) Fixed a bug where seaice_solve4temp would not recognize ice-free grid cells
1137        because the old regularization always set heffActual >= 0.05 cm
1138     4) Changed the model so that the default behavior is to put a small (10^-5) "floor"
1139        on AREA when HEFF > 0.
1140      - went from requiring ALLOW_PRECLUDE_INFINITESIMAL_AREA to be defined to
1141        requiring that DISABLE_AREA_FLOOR *not* be defined
1142     Affected verifications:
1143      - 1D_ocean_ice_column (output.txt output_adm.txt)
1144      - global_ocean.cs32x15 (output.seaice.txt output_adm.seaice.txt)
1145    o pkg/diagnostics:
1146      - move MNC code from diagnostics_out.F into new diagnostics_mnc_out.F (2 S/R).
1147      - rename S/R GETDIAG to DIAGNOSTICS_GET_DIAG and change type of 1rst argument
1148        (was _RL, now integer) with option = 0 to retrieve all levels.
1149      - add pieces of code to compute velocity potential at each level (new diagnostics
1150        PhiVEL, works only when UVELMASS & VVELMASS are also turned on);
1151        for now, using same params as CG2D (target-resisual, max Nb of iter ...).
1152      - fix few issues with counter diagnostics in diagnostics_setdiag.F &
1153        diagstats_setdiag.F (if diagnostic counter is itself a counter diag)
1154        and in diagnostics_fract_fill.F (do not need a valid pointer for the
1155        diagnostics counter-mate); check that definition of counter-diagnostic
1156        includes a valid counter-mate (in diagnostics_set_levels.F).
1157    o model/src (rStar):
1158      - add rStar scaling factor in diags_phi_hyd.F (similar to calc_grad_phi_hyd.F);
1159        affect solution only if z* with full pressure in EOS;
1160        update output of test-exp global_ocean.90x40x15.
1161    o pkg/seaice:
1162      - introduce siEps=1e-5 parameter
1163      - use areaMax in AREA update (part 4), consistent with ridging step (part 2.5).
1164      - re-organize SEAICE_ADD_SUBLIMATION_TO_FWBUDGET code.
1165      - introduce ALLOW_SITRACER and seaice_tracer_phys.F to handle generic seaice tracer.
1166        For now it covers, and was tested for, ice salinity and age (attached to HEFF),
1167        as well as ice cover age and ridging index (attached to AREA).
1168        For now the run time parameters (in data.seaice/SEAICE_PARM03) are
1169        SItrName (e.g. 'age') and SItrMate ('HEFF', which is the default, or 'AREA').
1170        Up to SItrMaxNum=3 tracers can be used simultaneously.
1171    o pkg/salt_plume:
1172      -introduce SPsalFRAC run time parameter that sets the fraction of the
1173       salt by-product of ice growth (SPsalFRAC*(1-SIsalFRAC)*salt typically)
1174       that gets vertically redistributed (fluxed down) by pkg/salt_plume.
1175    o model debug options:
1176      - Switch reading of debugMode from S/R INI_PARMS (parameter file "data", stored
1177        in PARAMS.h) to S/R EESET_PARMS (parameter file "eedata", stored in EEPARAMS.h).
1178      - Refine debug-msg printing selection (3 new levels):
1179        debugMode  : controls printing of debug messages (sequence of S/R calls).
1180        debugLevel : controls printing of algorithm-relevant auxiliary/debug messages
1181         debLevZero =  0 ; /* level of disabled aux. msg printing */
1182         debLevA =  1 ; /* level of minimum  aux. msg printing */
1183         debLevB =  2 ; /* level of low aux. print (report read-file opening)*/
1184         debLevC =  3 ; /* level of moderate debug prt (most pkgs debug msg) */
1185         debLevD =  4 ; /* level of enhanced debug prt (add DEBUG_STATS prt) */
1186         debLevE =  5 ; /* level of extensive debug printing */
1187        New debugLevel default: with default debugMode value (=F),
1188          = 2 (debLevB) or = 1 (debLevA) in case ALLOW_AUTODIFF is defined.;
1189          and if debugMode=T, default debugLevel = 4 (debLevD).
1190        Relation with previous settings:
1191         debLevB (=2) corresponds to former debLevA (=1)
1192         debLevD (=4) corresponds to former debLevB (=2)
1193        Note:
1194         a) if debugLevel=0, skip WRITE_GRID call when nIter0 > 0 (same as before);
1195         b) default debugLevel=1 is convenient in AD runs (avoid many file opening msgs);
1196            to recover previous default, set debugLevel=2 (e.g. AD-test hs94.1x64x5)
1197      - Add new parameter (printResidualFreq, read from PARM02 namelist) to print
1198        detailed CG solvers convergence; off (=0) by default, except if debugLevel=5.
1199    o pkg/obcs:
1200      - change OBCSfixTopo default from True to False (should not change the results);
1201        keep OBCSfixTopo=T in verification-exp. seaice_obcs.
1202    o pkg/thsice:
1203      - fix bug in thsice_calc_thickn.F (was introduced in version 1.18) in
1204        2nd layer seaice sublimation (unlikely to happen)
1205      - use Interior mask for OBCS in thsice_advection.F (similar to what is
1206        done in gad_advection & seaice_advection).
1207    o adjoint:
1208      bug fix spotted by Gael Forget:
1209      seaice_advection and thsice_advection still had
1210      legacy CPP options to avoid CS corner updates for adjoint
1211    o pkg/seaice:
1212      => Change some of the defaults (2011/05/29):
1213         - change SEAICEuseFluxForm default (from False to True)
1214         - change DIFF1 default (from 0.004 m/s to 0. m/s)
1215         And print warnings if DIFF1 is not set in data.seaice and centered
1216          avection scheme is used without any diffusion.
1217      also:
1218      - fix seaice_diffusion calls in default AdvScheme part of seaice_advdiff.F;
1219      - set SEAICEdiffKh[] default in the same way as SEAICEadvSch[]
1220      - stop if DIFF1<>0 with SEAICEadvScheme <> 2, if DIFF1<>0 with any
1221        other non-zero SEAICEdiffKh[] diffusivity, if SEAICEadvSalt=T with
1222        #undef SEAICE_VARIABLE_SALINITY, if SEAICEadvAge=T with #undef SEAICE_AGE.
1223      update results of test exp.:
1224         lab_sea: output.fd (switch to AdvScheme=33 with diffKh=20)
1225             output.hb87, output_adm.evp (SEAICEuseFluxForm=T and diffKh=200)
1226             output_adm.noseaicedyn (SEAICEuseFluxForm=T)
1227         offline_exf_seaice: output.seaicetd, output_adm (SEAICEuseFluxForm=T)
1228         seaice_obcs: output (SEAICEuseFluxForm=T)
1229      and prescribe old default for SEAICEuseFluxForm (=F) and DIFF1 (=0.004)
1230          for standard fwd & AD lab_sea tests (to keep the same output).
1231    o pkg/seaice/seaice_growth.F:
1232      - use Ian Fenty's capping formulas for actual ice
1233      thickness thoughout EVOLUTION branch.
1234      - put treatment pathological case #2) in CPP brackets
1235      (ALLOW_AVOID_INFINITESIMAL_AREA, undef by default).
1236      - update global_ocean.cs32x15 and 1D_ocean_ice_colum results accordingly.
1237    o pkg/seaice:
1238      - seaice_diffusion.F : remove the min(DX,DY) factor permanently;
1239      pass the Laplacian diffusivity (in m^2/s) diffKh as a parameter;
1240      also pass fac as a param, which can be 1. (to update the tendency
1241      field) or the time step (to update the field itself).
1242      - seaice_advdiff.F: for multidim, call seaice_diffusion with
1243      e.g. SEAICEdiffKhHeff and with fac=1; for single-dim, call
1244      seaice_diffusion with e.g. SEAICEdiffKhHeff and with fac=time step.
1245      - SEAICE_PARAMS.h, seaice_readparms.F, seaice_check.F :
1246      hooks to handle SEAICEdiffKhHeff, SEAICEdiffKhArea, etc.
1247    o pkg/seaice:
1248      diffusion with centered advection scheme (diffus.F & advect.F):
1249      - simplify S/R DIFFUS (put deltaT & DIFF1 factor outside, move EXCH outside)
1250        to just compute the laplacian of input-field.
1251      - unroll k loop (harmonic,biharmonic diff) in advect.F to save 1 exch call.
1252      - fix flux-form version in diffus.F to conserve tracer.
1253      update output of lab_sea.fd & lab_sea.hb87 (1rst set of modif affects
1254       machine truncation) and lab_sea.salt_plume (conservative flux-form modif)
1255    
1256    checkpoint62y (2011/05/26)
1257    o pkg/seaice:
1258     - seaice_growth.F : in EVOLUTION branch, always include
1259       a_QSWbyATM_cover in qnet (as it should be).
1260     - verification/global_ocean.cs32x15 : update results accordingly
1261       (output.seaice.txt output_adm.seaice.txt).
1262    o pkg/seaice + obcs:
1263     - use maskInW & maskInS in multi-dim advection and biharmonic diffusion:
1264       equivalent of assuming no tracer gradient outside the OB region.
1265       update output of seaice_obcs (uses DIFF1 <>0 => biharmonic diffusion)
1266     - remove calls to OBCS_COPY_TRACER after EXCH calls (no longer needed
1267       after changes above);
1268     - obcs+seaice cleaning: apply seaice-tracer OB values to tracer field
1269       only at OB location (instead of over a band of OLx width).
1270    o pkg/seaice:
1271     - fix wrong indices in old (non Flux-Form) diffusion default S/R diffus.F
1272       (dxG(I+1, ...) changed to dxG(I, ...), no impact on Lat-Lon grid)
1273    o pkg/obcs:
1274      - split header file "OBCS.h" into 4 separated files:
1275        OBCS_PARAMS.h, OBCS_GRID.h, OBCS_FIELDS.h & OBCS_SEAICE.h
1276       Note: OBCS_PARAMS.h & OBCS_GRID.h can be included without OBCS_OPTIONS.h
1277         (contain no conditional statement which depends on OBCS options).
1278      - move "useOBCSYearlyFields" from "data.obcs" (hold in OBCS_PARAMS.h)
1279        to parameter file "data.exf", namelist EXF_NML_OBCS (in EXF_PARAM.h).
1280    o ctrl, cost, grdchk & autodiff pkgs:
1281      - make options file more standard (like other {PKG}_OPTIONS.h file but
1282        with AD_CONFIG.h); clean-up some of the included header files.
1283    o pkg/obcs:
1284      - do not mask tracer when applying OB (tracer == 0 could generate problems)
1285      - apply tracer OB values to tracer field only at OB location (instead of
1286        over a band of OLx width)
1287      - clean-up obcs_apply_w.F & obcs_apply_eta.F (since less calls to these S/R)
1288      - remove OBCS_MULTIDIM_OLD_VERSION code in gad_advection.F and remove
1289        obcs_apply_tloc.F & obcs_apply_sloc.F
1290    o obcs in model/src:
1291      - call OBCS_APPLY_W only if NonHydrostatic.
1292      - call OBCS_APPLY_ETA only if NonLinFreeSurf.
1293      - reset dEtaHdt and wVel to zero outside OB interior region ;
1294      - leave tracer unchanged outside OB interior region: This has no effect
1295        on the solution but just to prevent unrealistic tracer value outside OB.
1296      - zero out velocity outside OB interior region: This has no effect on
1297        the solution but just to prevent unrealistic velocity outside OB.
1298    o obcs and non-lin free-surf:
1299       move call to OBCS_APPLY_R_STAR from update_r_star.F to calc_r_star.F
1300       and call to OBCS_APPLY_SURF_DR from update_surf_dr.F to calc_surf_dr.F
1301       + add argument "etaFld" to OBCS_APPLY_R_STAR & OBCS_APPLY_SURF_DR:
1302       this fixes missing EXCH + get consistent eta OB value (+ fix restart).
1303       update results of test-exp. exp4(nlfs).
1304    o exp4 (nlfs) test-exp:
1305       use OBC for Eta at Western & Eastern OB (to test prescribing Eta
1306       with NonLin-FreeSurf); update output.nlfs.txt
1307    o obcs and 2d/3d solver norm:
1308       use interior masks (maskInC) to cancel out cg2d & cg3d matrix coeff at OB
1309       and outside OB interior region (will allow to place OB further inside the
1310       domain). Depending on the domain, can affects cg2d-Norm (previous
1311       cancellation outside OB was only partial), e.g. in exp4 & obcs_ctrl,
1312       and cg3d-Norm (previous Norm was computed before canceling OB terms),
1313       e.g. in tutorial_plume_on_slope.
1314      - update output of exp.: exp4 (x2), obcs_ctrl and tutorial_plume_on_slope.
1315    o pkg rbcs:
1316      - split RBCS.h into 3 files: RBCS_SIZE.h, RBCS_PARAMS.h & RBCS_FIELDS.h
1317      - add capability to apply relaxation to horizontal velocity uVel & vVel.
1318    o pkg/grdchk: add gradient check for control variable xx_shifwflx
1319    o pkg/shelfice/shelfice_init_fixed.F
1320      fix CPP-flag combinations
1321    o pkg/seaice: Merge iceage code of Pierre Rampal
1322      * update/change/correct ice age calculations
1323      * add age updates for pathological cases
1324      Probably needs more testing...
1325    
1326    checkpoint62x (2011/05/13)
1327    o pkg/mom_vecinv:
1328       high-order vorticity scheme: use interior masks (maskInW & S)
1329       to zero-out (outside OB) gradient of vorticity.
1330    o verification exp.:
1331       turn on "useEnergyConservingCoriolis" (better discretisation) in exp.
1332       hs94.128x64x5 and seaice_obcs ; update results.
1333    o pkg/obcs:
1334      fix bug in OBeta for YZ sections in obcs_exf_load.F
1335    o pkg/ctrl, pkg/shelfice, and optim:
1336      - add new control variable xx_shifwflx (fresh water flux underneath ice
1337        shelves). This is almost as tedious as obcs-ctrl, because the
1338        variables needs its own mask.
1339      - add a cost function term that penalizes the deviation of xx_shifwflx
1340        from the first guess (zero) in analogy to other control variables
1341    o pkg/shelfice:
1342      - start basic adjoint
1343    o pkg/ctrl:
1344      - remove extra 2D field "for good measure" when initializing in
1345        ctrl_set_globfld_[xy/xz/yz].F
1346      - replace hard coded precision 32 (a bug) in ctrl_map_ini_gen by ctrlprec
1347      - improve error messages in ctrl_set_unpack_*
1348    o OBC implementation in momentum:
1349       use interior masks (maskInC,W & S) in momentum S/R:
1350       - multiply divergence, tension and some del^i.u or del^j.v by maskInC
1351       - multiply del2u,del2v by maskInW/S (biharmonic viscosity)
1352       - multiply horiz. grad of vorticity by maskInW/S (in Leith scheme)
1353       - multiply gradient of wVel by maskInW/S in del2w calculation (NonHyd)
1354       Motivation: fix/clean implementation of OBC with biharmonic-viscosity
1355        (and also with Leith/Smagorinsky harmonic-viscosity).
1356       Update output of experiment dome and exp4 (+nlfs).
1357    o exp4 test-exp:
1358      - turn on: nonHydrostatic, exactConserv, viscA4 (with momDissip_In_AB=F)
1359        and prescribe time-varying OB (without pkg/exf) for zonal-velocity
1360        at Western & Eastern Boundaries (+/- 1 per-cent); Also prescribe
1361        time-varying OB at Western-side for wVel (NonHyd); update output.
1362      - add secondary set-up (.nlfs) using NonLin FreeSurf (z*) + mom_vecinv
1363        and biharmonic-viscosity ; also use prescribed time varying OB.
1364    o pkg/obcs:
1365      fix bug in OBWeta,OBWeta indices in obcs_apply_r_star.F
1366    o model/src:
1367      - fix startTime setting when baseTime<>0 & nIter0=0 are specified ;
1368      - initialise startTime & nIter0 with unlikely values: allows to set one
1369        from the other without ambiguity.
1370    o seaice_obcs test-exp.:
1371      add small diffK4T,S to test biharmonic diffusivity with OBCS ; update output.
1372    o pkg/obcs:
1373      - remove calls to OBCS_COPY_TRACER after EXCH for T,S & pTracer:
1374        no longer needed with maskInC,W,S in pkg/generic_advdiff.
1375    o pkg/seaice:
1376      - retired SEAICE_SALINITY and SEAICE_salinity in favor of
1377        SEAICE_VARIABLE_SALINITY and SIsalFRAC, respectively.
1378      - fixed bug in the initialization of sea ice salinity variable HSALT
1379        in seaice_init_varia.F  (removed dependence on ICE2WATR)
1380    o fizhi-cs test exp.:
1381       switch reference output convention for these 2 non-standard test-exp,
1382        from: pgi  6.1-5 on faulks (FC.6, -of linux_ia32_pgf77+authors_fc5)
1383          to: ifort 11.1 on baudelaire (FC.13, -of linux_amd64_ifort11)
1384       reason: faulks might get retired soon and pkg/fizhi has still Pb with gfortran
1385    o model/inc:
1386      - change type of PmEpR array (from _RS to _RL) to fix restart (with "-use_r4")
1387        of exp. global_ocean.90x40x15 (Suncronous time-stepping + Real-FW + NonLin-FS)
1388    o pkg/seaice:
1389      - fix calculation of saltFlux and saltPlumeFlux when using SEAICE_SALINITY
1390    o verification/lab_sea, 1D_ocean_ice_column, seaice_obcs, global_ocean.cs32x15
1391      - updated output*.txt files due to bug fixes in salt, saltPlumeFlux,
1392        and initial HSALT
1393    
1394    checkpoint62w (2011/04/26)
1395    o pkg/mom_fluxform:
1396      - fix calculation of del2u & del2v (no-slip BC) when using Non-Lin Free-Surf.
1397      - use parameter "sideDragFactor" in no-slip BC side-drag part.
1398      - update output of exp. global_ocean.90x40x15
1399    o pkg/mom_vecinv:
1400      mask del2u & del2v (no effect on results, but cleaner & closer to mom_fluxform)
1401    o update seaice exp.:
1402      use more consistent parameter values (remove "backward compatability only":
1403       ICE2WATR, SEAICE_lhSublim, SEAICE_cpAir, SEAICE_rhoAir + set rhoConstFresh)
1404      related to thermodynamics seaice. Update output (fwd+AD) of exp.:
1405       1D_ocean_ice_column (x2), lab_sea (x8), ioffline_exf_seaice (x2) & seaice_obcs
1406    o update test-exp global_ocean.90x40x15:
1407      o use default CD_CODE_OPTIONS file (Adams-Bashforth on CD Mom & Coriolis).
1408      o increase Overlap size from 2 to 3 (to allow to test bi-harmonic Visc.)
1409      o new pickup-files from a 100.yr run with pkg/down_slope (input.dwnslp params)
1410      o turn on zStar & viscA4 in standard set-up (dir input/)
1411        and update output files: output.txt & output.dwnslp.txt
1412    o new AD-test experiment: obcs_ctrl
1413      (From Matt MITgcm_Contrib/SOSE/BoxAdj) to test OBCS as control vector.
1414    o pkg/dic:
1415      fix two bugs in handling water vapour pressure in carbonate chemistry
1416      and air-sea fluxes. Found by Val Bennington and Galen McKinley
1417      (add DIC Option = WATERVAP_BUG to recover old results)
1418      update output of tutorial_global_oce_biogeo (fwd+AD) & tutorial_dic_adjoffline
1419    o adding allowInteriorFreezing option to check for water below freezing point
1420      at depth and bring the negative heat anomaly to the surface level
1421    o pkgs _fields_load:
1422      - extend GET_PERIODIC_INTERVAL to deal with non-periodic case (from pkg/rbcs)
1423      - use new S/R GET_PERIODIC_INTERVAL in pkgs:
1424        bulk_force, cheapaml, cfc, dic, obcs (+ ctrl/ctrl_get_gen_rec), offline and
1425        rbcs to get interpolation weights and time reccord number.
1426      - fix multi-threading in aim_fields_load.F
1427      - apply EXCH to temp arrays [0,1] after reading in dic_fields_load.F
1428    o external_fields_load:
1429      new S/R GET_PERIODIC_INTERVAL to calculate which time-record (and linear
1430       interpolation weights) to use in a periodic time-series ; do not divide by
1431       time-step to convert to integer:
1432       - this fixes case where externForcingPeriod is not multiple of time-step
1433          (Thanks to Christopher L. Wolfe)
1434       - this fixes case where externForcingPeriod is an odd multiple of time-step
1435         (was wrong by half of time-step); update results of tutorial_global_oce_in_p.
1436      store index of time-record which is currently loaded:
1437       - works without any assumption on sequence of calls to EXTERNAL_FIELDS_LOAD ;
1438       - needed for the adjoint but not yet used because of extensive recomputations;
1439         (to be fixed soon)
1440    
1441    checkpoint62v (2011/04/02)
1442    o verification/1D_ocean_ice_column added to test Ian Fenty's
1443      pkg/seaice_growth.F modifications for improving sea ice code differentiability
1444    o update output of exp4, internal_wave, seaice_obcs, tutorial_plume_on_slope
1445      (new velocity statistics after changing maskInW & maskInS definition)
1446    o pkg/generic_advdiff with OBCS:
1447      use maksInW & maskInS in advective flux and in biharmonic diffusion calculation:
1448      equivalent to assumption of no tracer gradient outside the OB region.
1449      This will affect the results if using obcs+biharmonic diffusion.
1450      update output_adm.txt of experiment bottom_ctrl_5x5 (not expected since no obc)
1451    o pkg/obcs:
1452      change definition of maskInW & maskInS: leave OB edges inside (maskIn=1)
1453      (e.g., maskInW(OB_Ie)=1 ) so that velocity normal-component at OB is still
1454      in Interior region. No impact on solution but affects Velocity monitor stats.
1455    o pkg/ptracers (adjoint)
1456      New option AUTODIFF_PTRACERS_SPLIT_FILES for writing separate
1457      tape file for each tracer
1458    o model/inc/src and pkg/autodiff: add parameters that allow to turn
1459      of parts of the adjoint code at run time. For now, there are only
1460      useKPPinAdMode, useGMrediInAdMode, and useSEAICEinAdMode. These
1461      parameters are set in data.pkg.
1462      This is the lazy coward's version of doing this, but still useful for
1463      debugging. In order to do it right, everything needs to be moved to
1464      pkg/autodiff.
1465    o pkg/autodiff: fix global_sum_tile_ad.F by resetting adsumPhi at
1466      the end; this fixes the adjoint balancing code for open boundaries.
1467    o pkg/ctrl:
1468      - change behavior of xx_${varname}period to be analogous to exf-conventions:
1469        xx_${varname}period =   0.,  means time-independent control part
1470        xx_${varname}period = -12., means one-year-periodic monthly control part
1471      - introduce helper routine ctrl_init_rec (part of ctrl_init.F) to
1472        clean up ctrl_init a little, remove unused variables
1473      - ctrl_init: fixed the handling of the start/endrec for obcs-variables
1474      - move "call cal_GetMonthsRec" from s/r ctrl_get_gen to s/r ctrl_get_gen_rec
1475    
1476    checkpoint62u (2011/03/15)
1477    o model/src:
1478      - for the adjoint, change NonLin-FreeSurf initialisation sequence: fill-in
1479        h0Fac from INITIALISE_FIXED and reset hFac to h0Fac in INITIALISE_VARIA ;
1480      - in initialise_varia.F (except for ALLOW_DEPTH_CONTROL) remove 2nd call to
1481        INI_DEPTHS, INI_MASKS_ETC & INI_LINEAR_PHISURF.
1482    o pkg/ctrl/obcs/ecco:
1483      - remove obsolete, unused, and partially broken code:
1484        ctrl_obcsvol/ctrl_obcsbal/ctrl_volflux and code within
1485        ALLOW_CTRL_OBCS_BALANCE
1486      - put a stop statement into ecco/cost_obcsvol.F, but also add
1487        cost_obcsvol to ecco_ad_diff.list
1488    o pkg/ecco: fix counting cost function contributions for obcs (code
1489      by Matt M.) and diffkr for diagnostics
1490    o pkg/ecco, pkg/ctrl, pkg/grdchk:
1491      add cost penalty terms for initial uvel, vvel, eta controls
1492      and I/O for prior error files
1493    o pkg/mdsio:
1494       move mds_check4file.F from eesupp/src to mdsio_check4file.F ; add option
1495       (new argument) to check for tiled file in mdsioLocalDir : this fix the
1496       restart from pickup_som , pickup_dic (& dic_co2atm) with mdsioLocalDir.
1497    o pkg/ctrl:
1498     - ctrl_obcsbal.F, ctrl_obcsvol.F: replace last calls of ctrl_getrec by
1499       ctrl_get_gen_rec, put a stop statement into ctrl_getrec. Remove
1500       unused and superfluous variables
1501     - ctrl_get_gen_rec.F: catch the case of xx_genperiod=0.
1502    o pkg/ecco
1503     - enable adjoint of Stevens OB
1504    o pkg/ctrl/ecco/grdchk:
1505      - remove global declaration of tmpfldx/yz and tmpfldx/yz2.
1506        Fortunately, we do not have any tests for the numerous cpp-flagged
1507        option of "obcs as control parameters" so we will never know
1508        if this is an improvement (but at least now things compile).
1509      - remove an obsolete initialization from ecco_cost_init_barfiles.F
1510      - fix some problems within never used ifdefs to make the code compile
1511    o pkg/obcs:
1512     - Refine Interior mask definition to work with more complex OB (e.g.
1513       if OB_Ie < OB_Iw); In case default setting is not sufficient, allows to
1514       read in Interior mask from file. Check if Interior mask is consistent
1515       with OB list of indices.
1516    o pkg/seaice
1517     - beginning code for a seaice tracer package,
1518       but currently only used for seaice age: SEAICE_AGE
1519       SEAICE_num = 4
1520       iTracer = 1: area-weighted ice age
1521               = 2: volume-weighted ice age
1522               = 3, 4: template for one-year vs. multi-year ice
1523       data.seaice has new namelist SEAICE_PARM03 for arrays related to
1524       SEAICE_num
1525    
1526    checkpoint62t (2011/03/05)
1527    o pkg/obcs:
1528     - obcs_apply_uv.F: change to a 2 steps method, first tangential component;
1529       then normal component. This ensures that the normal component is set
1530       correctly even when it conficts with tangential setting from an other OB.
1531       Affects results of test-experiment seaice_obcs: update the output.txt
1532    o pkg/obcs:
1533     - add code to monitor statistics of dynamical fields at OB.
1534     - take OBCS_BALANCE code out of obcs_calc.F into new S/R OBCS_BALANCE_FLOW :
1535       - fix to OBCS_BALANCE code (right hFac ; deal with simple OB intersection).
1536       - change default: balance the Net inflow through all OB (instead of balancing
1537         each OB separately); keep the old method if setting OBC_balanceFacX < 0.
1538     - switch on useOBCSbalance in dome experiment: only correct Western OB outflow
1539       to match Nortern OB inflow (OBCS_balanceFacN=0).
1540    o pkg/seaice:
1541     - redefined actual sea ice age to be ICEAGE/HEFF ifdef SEAICE_AGE_VOL
1542    o pkg/seaice (seaice_growth v 1.113):
1543     - reverting seaice_growth to v 1.111 in order to have code with exact bit
1544       compatibility with MITgcm_contrib/ifenty/Fenty_seaice_thermo_code_merge
1545       CPP option SEAICE_OCN_MELT_ACT_ON_AREA removed in v 1.112 is reintroduced
1546       runtime flag SEAICEareaFormula is kept but is inactive
1547    o model/src:
1548     - add new param to scale curvilinear grid distance and area when using
1549       a different sphere radius from the grid-files.
1550     - test/check multi-threads EXCH applied to local variable (cg2d_x)
1551    o adjoint:
1552     - enable adjoint of Stevens OB
1553     - add dummy_in_dynamics to enable extraction of ADJrhoinsitu
1554       (a bit delicate because of potentially modified adj. common block structure;
1555       current switch is ALLOW_AUTODIFF_MONITOR_DIAG, could be changed later)
1556    
1557    checkpoint62s (2011/02/15)
1558    o pkg/seaice (seaice_growth v 1.112):
1559     - introduce SEAICEareaFormula run time parameter, which selects the recipe for
1560       computing the ice cover tendency from effective thickness tendencies. Include
1561       Ian Fenty's formula.
1562     - remove 'undef SEAICE_OCN_MELT_ACT_ON_AREA' which may now be achieved using
1563       SEAICEareaFormula.
1564     - simplify notations for the various d_HEFF/d_AREA terms.
1565    o pkg/gmredi:
1566     - add Boundary-Value-Problem bolus transport (Ferrari etal, OM 2010) code
1567       from Christopher Wolfe (UCSD); add partial cell factor in vertical derivative;
1568       add a verification test-run (front_relax.bvp) to test GM_useBVP.
1569    o pkg/seaice (seaice_growth v 1.111):
1570     - for SEAICE_DO_OPEN_WATER_GROWTH, replace Gael's implementation with Ian's.
1571     - the new SEAICE_DO_OPEN_WATER_MELT allows open-water air-sea heat fluxes to
1572       also melt ice.
1573    o pkg/seaice:
1574     - McPhee formula for Ice-Ocean fluxes (provided by Ian Fenty).
1575     - can be used by #define MCPHEE_OCEAN_ICE_HEAT_FLUX in SEAICE_OPTIONS.h
1576    o pkg/cheapaml:
1577     - from Nico Wienders: New version of this package.
1578    o pkg/flt:
1579     - add CPP options to prevent floats to re-enter the opposite side of
1580       a periodic domain (default: keep periodicity)
1581    o pkg/gmredi:
1582     - apply exchange to GM_PsiX,GM_PsiY to get valid values near CS-corners
1583       (needed for multi-dim advection).
1584     - switch on GM Advective form in global_ocean.cs32x15 and update output.txt
1585    o model/src:
1586     - fix wrong re-setting of addMass array (ALLOW_ADDFLUID) for atmospheric run.
1587    o tutorial_tracer_adjsens
1588     - extend to NLFS and replace maskC by hFacC
1589       (change reference output accordingly)
1590    
1591    checkpoint62r (2011/01/24)
1592    o testreport:
1593     - add option -deloutp (-do) to remove output file after successful run
1594     - add option -mfile (-mf) for MPI machile-file and for each test-exp,
1595       extract exact list of procs from this file ; adjust COMMAND by
1596       replacing TR_MFILE & TR_NPROC with local machile-file & Nb of MPI procs.
1597    o pkg/ecco: replace old ineffective way of penalizing deviations from
1598      first guess (of obcs) with code by Matt Mazloff
1599    o pkg/ctrl: add code that allows the use of ALLOW_OBCS?_CONTROL without
1600      exf/cal
1601      - ctrl_init: fix initialisation (computation of diffrec) for obcs-ctrl
1602        and handle case of obcs?period == 0
1603        Not affected by these changes: There is still an inconsistency in
1604        the computation of start/endrec for the obcs variables for ALLOW_CAL
1605        defined (see comment by Menemenlis, 7-Mar-2003)
1606      - make S/R ctrl_get_gen_rec return something meaningful even if
1607        ALLOW_CAL is not defined
1608      - ctrl_getobcs?: simplify code so that it does not need to use
1609                       S/R exf_swapfields
1610    o testreport:
1611       allow to test MPI with different number of processors for each experiment:
1612       create file "SIZE.h.mpi" in each build dir.
1613       Note: update of "-command" argument not yet implemented.
1614    o model/src, pkg/autodiff, pkg/ecco, pkg/seaice:
1615      alleviate the need for additional 3D tapes when using
1616      the non-inear free surface in the adjoint. This is done
1617      by adding an 'update' of hfacc etc. to their current
1618      value at the beginning of forward_step.F.
1619    o pkg/seaice
1620      seaice_lsr: move stress-divergence computations out of outer pseudo-
1621      timestepping loop
1622    o pkg/obcs/obcs_prescribe_read.F: move 'CALL OBCS_EXTERNAL_FIELDS_LOAD'
1623      up, so that the calls of the ctrl_* subroutines are really at the end
1624      of the routine.
1625    o pkg/gmredi:
1626      allow to specify a 2-D horizontal map and a 1-D vertical profil
1627      as scaling factor for Isopycnal diffusivity (Redi) and GM diffusivity.
1628    o pkg/seaice:
1629      move lsr iterations from seaice_dynsolver to seaice_lsr.
1630    o pkg/seaice:
1631      reduce memory footprint of seaice mutldim advection tapes,
1632      by using a 2D tape independent of the generic_advdiff ones,
1633      and setting GAD_AREA=1 etc. rather than GAD_AREA=101 etc.
1634    
1635    checkpoint62q (2010/12/29)
1636    o model/src:
1637      - check horizontal grid-spacing for unset or zero/negative values.
1638      - change AD test hs94.1x64x5 to be truly a 2-D set-up.
1639    o pkg/flt:
1640      - use (recent) mdsio S/R MDS_READVEC_LOC instead of local FLT_MDSREADVECTOR
1641      - precision of input and output files set according to readBinaryPrec
1642        and writeBinaryPrec (previously always 64.b), pickup remains at 64 bits.
1643      - initial float position from tiled file was not converted to index space
1644        (looks like a bug): fixed to make it similar to initial pos. global file.
1645    o global_ocean.cs32x15:
1646       change SIZE.h of AD set-up to get same tiling as with MPI.
1647       Update output_adm, output_adm.thsice (pass@14) & output_adm.seaice (fail@11)
1648    o model/src:
1649       add flag to control printing of domain fields (bathymetry, hFac ...) in
1650       ini_mask_etc (call to plot_fieds_xy*).
1651    o pkg/thsice:
1652       if useEXF, some forcing fields are not valid in overlap: fixed by computing
1653       over the interior only + apply EXCH at the end (like with SEAICE advection).
1654    o pkg/mdsio:
1655      - add 2 arguments to S/R MDS_PASS_R4/8toRL/S for overlap size of buffer
1656        to copy to/from, so that it can be used to replace MDS_PASS_WH_R8toRL/RS.
1657      - change barrier call for safe multi-threads access to 3-D shared buffer.
1658      - MDS_READ/WRITEVEC_LOC use buffers from MDSIO_BUFF_3D.h (instead of local ones)
1659      - replace call to MDS_PASS_WH_R4/8toRL with call to MDS_PASS_R4/8toRL and
1660        remove the 4 S/R MDS_PASS_WH_R4/8toRL/S.
1661    o pkg/flt:
1662      - add fourth-order Runge-Kutta integration
1663      - add basic exch2 support (only 1 facet supported so far!)
1664    o pkg/mdsio+rw:
1665      new S/R to read local (or tile independent) vector (read counterpart of
1666       mds_writevec_loc, and front-end write_glvec_rl/rs).
1667    o global_ocean.cs32x15: additional input_ad.seaice experiment
1668        that uses pkg/seaice rather than pkg/thsice.
1669        (using multidim advection for seaice)
1670    o towards more F95 syntax for array specification in namelist:
1671      - change "data.diagnostics" (data.ptracers was changed before checkpoint62p)
1672        of all verification experiments.
1673           e.g.:    line: fields(1,3)='ETAN    ','ETANSQ  ',
1674          was changed to: fields(1:2,3)='ETAN    ','ETANSQ  ',
1675      - finish adding "-DNML_EXTENDED_F77" to DEFINES list in pgf77 and g77 optfiles
1676    o global_ocean.cs32x15: additional input.seaice experiment
1677        that uses pkg/seaice rather than pkg/thsice.
1678    
1679    checkpoint62p (2010/12/17)
1680    o pkg/thsice: rename (ad tape index) iicekey as ticekey, and move it
1681        to THSICE_SIZE.h to avoid conflict with pkg/seaice.
1682    o pkg/seaice: add seaice_diffusion.f seaice_map_thsice.f to adjoint.
1683        allow for use of multim. advection in seaice adjoint.
1684    o pkg/seaice: add diagnostics for snow precipitation and sublimation flux
1685      - first attempt to close budgets by taking into account the freshwater
1686        flux implied by the sublimation of snow and ice. So far only the
1687        volume budget is closed, turn on with soon-to-be-retired-again CPP-Flag
1688        SEAICE_ADD_SUBLIMATION_TO_FWBUDGET
1689    o eesupp/src:
1690      new S/R with new option (NML_EXTENDED_F77) to change array specification
1691      from F95 standard to commonly accepted extended F77 form.
1692      This would allow to use F95 syntax in namelist (needed with gfortran 4.4.5)
1693      and to revert back to the original syntax (with -DNML_EXTENDED_F77)
1694      for less tolerant f77 compiler (e.g., pgf77, g77).
1695    o globalFiles:
1696      commented out in parameter file "data" since it's not safe with MPI
1697      (e.g., wrong on aces); keep it if useSingleCpuIO=T (but not doing much
1698      in this case); no longer commented out in restart test (tst_2+2).
1699    o add adTapeDir to specify a special directory where adjoint tapes are
1700      written/read (adread_adwrite.F). adTapeDir is specified in data/PARM05
1701      and cannot be used together with mdsioLocalDir.
1702    o nesting pkgs:
1703      - packages_init_variables : put call to OBCS_INIT_VARIABLES in last position
1704      - update Gianmaria's Nesting pkgs (from Contrib/nesting_sannino)
1705      - add parameter files + utils dir + output from short run on beagle.
1706    o pkg/seaice:
1707        fix seaice_growth.F store directives; update results of exp. lab_sea.ad
1708    o pkg/seaice: explicitly store tsurfloc in seaice_solve4temp.F to avoid
1709      unnecessary copying in adjoint code, requires new parameter NMAX_ITER
1710    
1711    checkpoint62o (2010/11/25)
1712    o pkg/exf:
1713      - change CPP option EXF_VERBOSE to run-time logical param exf_verbose.
1714    o pkg/seaice:
1715      - seaice_ocean_stress: split a loop for better vectorization of the
1716        adjoint code
1717      - seaice_growth.F: fix bug in conservation of freshwater connected to
1718        capping of heff, put contribution into d_HEFFbyNEG
1719      - replace irritating parameters SEAICE_latentWater/Ice and SEAICE_sensHeat
1720        by something more sensible (parameters that are what their name implies)
1721      - change some defaults, so that by default exf-parameters are used for
1722        things like rhoAir, cpAir,latent/sensible heat parameters, in order
1723        to reproduce the old results, many data.seaice now contain funny values
1724        for cpAir and latent heat of sublimation
1725    o packages_readparms.F: move exf_readparms up in line so that
1726        exf-parameters are visible for other packages (e.g. seaice)
1727    o debugMode & debugLevel=2:
1728      - differentiate between debugMode & debugLevel=2:
1729        debugMode: controls printing of debug messages (sequence of S/R calls).
1730        debugLevel: controls printing of algorithm intermediate results and stats.
1731      - remove "if debugLevel=2 => debugMode" but keep "debugMode =>  debugLevel=2";
1732        => allows to print debug-stats without all sequence of call messages.
1733      - switch control of debug print from debugLevel to debugMode in many S/R.
1734    o pkg/obcs (obcs-sponge):
1735        fix bug that was introduced on Oct 25 (in dynamics.F v1.151): put back the
1736        call to OBCS_PRESCRIBE_EXCHANGES (need to exch gU,gV when using obcs-sponge)
1737    o pkg/generic_advdiff:
1738      - record overlap minimum size for each advection scheme;
1739      - refine criteria on overlap minimum size;
1740      - check and stop (in gad_check) if overlap size is too small.
1741    o pkg/obcs:
1742      - with ptracers: remove multiple calls to obcs_apply_ptracer (only done
1743        once, in ptracers_implicit.F)
1744      - with seaice: remove test on empty file name in obcs_apply_seaice (always
1745        apply OB values when tile has OB)
1746    o model/src, coriolis setting:
1747      - integer parameter "selectCoriMap" (=0,1,2) replaces 3 logical
1748        useConstantF, useBetaPlaneF, useSphereF ; can now read coriolis from
1749        files (selectCoriMap=3) with any grid.
1750      - add parameter "fPrime" for constant second Coriolis coeff (default=0).
1751    o pkg/seaice/seaice_growth.F:
1752        a few cosmetic changes that reduce the number of lines of code
1753    o pkg/obcs: add boundary conditions following Stevens (1990)
1754      - the code follows old MOM/NAOSIM code
1755      - so far it is only implemented for the eastern and western boundaries
1756        and NOT for pTracers
1757    o pkg/rbcs:
1758      - replace rbcsInIter by rbcsForcingOffset, the time in seconds at the
1759        beginning of the first rbcs forcing period.
1760      - add option rbcsSingleTimeFiles that makes rbcs read forcing data like the
1761        offline package, i.e., one file per time, labeled by iteration number;
1762        deltaTrbcs sets the timestep with which the data was generated;
1763        rbcsIter0 is the forcing iteration corresponding to rbcsForcingOffset.
1764      - rbcsForcingCycle=0 makes forcing non-cyclic.
1765      - make arithmetic safe for negative times and odd forcing periods.
1766    
1767    checkpoint62n (2010/11/09)
1768    o pkg/seaice:
1769        fix masking in free-drift S/R ; update results of exp. lab_sea.fd
1770    o pkg/obcs:
1771       New S/R to copy tracer value from the OB location to narrow band region
1772        (width = same as overlap) beyond the OB: preserve OB value (needed for
1773        high-order scheme) which were overwritten by EXCH call if in overlap
1774        region. Applied to theta, salt, ptracer and advected seaice variables.
1775       With seaice: use maskInC in similar way as in gad_advection.F,
1776        in seaice_advection.F and advect.F.
1777       Update output of experiment seaice_obcs and change exp4 to test OBCS with
1778        4th order Adv.Scheme. for pasive salt and ptracer.
1779    o tools/genmake2:
1780      - when looking for an optfile (not specified), only search for Fortran compiler
1781        (remove sym-link test + setting of CPP + makedepend check + C-compiler check)
1782      - in get_fortran_c_namemangling: use "$CC $CFLAG" to compile C test programm
1783        (instead of "$MAKE genmake_test.o" since an existing Makefile can be wrong)
1784      - set default for CPP to "cpp -traditional -P" (was the case without specifying
1785        an optfile, but otherwise default was just "cpp".
1786      - comment out PLATFORM=$p_PLATFORM (no idea where p_PLATFORM comes from)
1787      - when "CC" is not set in the optfile, look for possible C compiler
1788        (instead of just setting CC=cc)
1789      - put back version v.169 modif (from 2008/02/15), was dropped in v.173 changes:
1790        => add a ".F" to ".o" rule for source files with no "#include" (such as
1791           port_rand.F); otherwise, default ignores FOPTIM and just uses FFLAGS.
1792      - move gfortran before g77 in list of possible Fortran compiler (consistent
1793        with reference compiler switch from g77 to gfortran)
1794    o pkg/seaice:
1795      o remove SEAICE_OLD_AND_BAD_DISCRETIZATION-code, add a test to
1796        seaice_check that stops the model, when the CPP flag is used.
1797      o seaice_growth.F: make capping of ice volume conserving by returning the
1798        capped ice as freshwater to EmPmR. This does not change the verification
1799        experiments but will change runs where the capping is acutally active
1800    o change reference platform+compiler from faulks+g77 to baudelaire+gfortran
1801      (except the 2 fizhi test exp.); update output of exp.: bottom_ctrl_5x5,
1802         global_ocean.cs32x15 (icedyn, thsice, AD thsice), global_ocean_ebm (AD),
1803         lab_sea (fd, hb87, salt_plume), MLAdjust (3/5) and vermix (dd)
1804    o tools/genmake2:
1805      - merge genmake_warnings & genmake_errors into 1 log file: "genmake.log")
1806      - change DUMPSTATE default to false (can use "-ds" option to switch it to T)
1807      - clean previous genmake log files before anything else.
1808      - change Makefile to remove testreport log files (*.tr_log) and genmake log
1809        files only with "CLEAN" target (instead of "Clean");
1810    o pkg/generic_advdiff:
1811      Change OBCS in multiDim advection (gad_advection.F):
1812       Use maskInC to prevent intermediate update of tracer-field in OB regions,
1813       thus keeping current-time-step OB values; and remove the call to OBCS_APPLY
1814       which were applying future time-step OB values.
1815      This way, all explicit calculations use current-time-step OB values
1816       (simpler and more consistent).
1817      Affects results when set-up uses time-varying OBC and multi-dim advection;
1818       update output of experiment seaice_obcs.
1819    o pkg/seaice:
1820      move OPTIONS (formerly locally defined) to SEAICE_OPTIONS.h:
1821       this includes SEAICE_GROWTH_LEGACY (+ SEAICE_DO_OPEN_WATER_GROWTH &
1822         SEAICE_OCN_MELT_ACT_ON_AREA ) and SEAICE_SOLVE4TEMP_LEGACY.
1823      Default (pkg/seaice/SEAICE_OPTIONS.h) is to define SEAICE_SOLVE4TEMP_LEGACY
1824       but leave SEAICE_GROWTH_LEGACY undef ; For now, keep verification exp
1825       unchanged (SEAICE_GROWTH_LEGACY defined in */code*/SEAICE_OPTIONS.h)
1826    o pkg aim (2010/10/26):
1827      - Introduce ALLOW_INSOLATION, moving toward a more general incoming solar radiation
1828        formulation with obliquity, eccentricity, ... as run-time parameters,
1829      - Introduce diagnostics for top-of-the-atmaophere incoming solar radiation and
1830        upward shortwave radition at the surface (all-sky and clear-sky).
1831    o pkg/obcs:
1832      - writing sections with globalFiles=T does not work: switch to tiled-files
1833        when writing sections for OBCS (change pkg/rw/write_rec.F accordingly).
1834      - fix index bug (OB_Ie -> OB_Iw_) in obcs_apply_uvice.F
1835      - apply OBCS_SEAICE_COMPUTE_UVICE to both uice and vice at all obcs
1836    
1837    checkpoint62m (2010/10/21)
1838    o pkg/seaice: vectorize seaice_solve4temp.F
1839      - move iterations loops outside of i/j-loops
1840      - requires 2D arrays for TB and effConduct
1841      - add 2D iceOrNot to replace HICE_ACTUAL.GT.0, as HICE_ACTUAL is
1842        modified in this routine
1843      - a little bit of clean up, adjusting indentation, etc.
1844      - replaced a few TEN**a by exp(a*log(10.)) in new code for better
1845        performance and '**TWO' by '**2' (because TWO is a float),
1846        replaced ONE, ZERO
1847    o eesupp/src:
1848       fix flow dir for exch1_z_RX_cube, exch1_uv_RX_cube & exch1_bg_RX_cube
1849    o pkg/seaice/seaice_growth.F
1850      Revision 1.89 of seaice_growth.F completes the overall october 2010 revision and
1851      merging process. The merged routine has two branches, and one activates the 'evolution'
1852      branch by setting SEAICE_GROWTH_LEGACY to undef (at the top of the routine for now).
1853      In summary, here is what the '10/10 revision' did consist of
1854        part 1: seaice_growth.F revisions 1.71 to 1.75
1855          - Preliminary seaice_growth.F clean-up, keeping test results strictly unchanged.
1856            The emphasis here was on improving readability (e.g. by trying to use meaningful
1857            variable names) and modularity (e.g. by adding arrays to store heff etc. updates).
1858        part 1.5:
1859          - revising the lab_sea experiment to make it a more useful (i.e. stable
1860            and representative of an actual model run). This was done by generating a
1861            (winter) pickup to start from, switching back the main experiment dynamic
1862            solver from evp to lsr, having one of the experiments use the free drift solution.
1863        part 2: seaice_growth.F revisions 1.76 to 1.85
1864          - Sorting out hard-coded constants that prevented heat and fresh water conservation.
1865          - Sorting out the various fields units and sign (set early on and reset at the end)
1866            to avoid numerous scalings/re-scalings. By v1.85 the basic unit for ice, heat and
1867            fresh water stock is 'effective ice meters', and >0 implies more ice/snow.
1868          - Using tendency terms arrays (d_HEFF* etc.) to alleviate remaining code locks,
1869            and simplifying logical expressions to further improve readibility.
1870        part 3: seaice_growth.F revisions 1.86 to 1.89
1871          - Re-organize the blocks of code more logically.
1872          - Merging the '_if.F' pieces that add something new.
1873    o pkg/thsice:
1874      - vectorize thsice_solve4temp and thsice_get_exf.
1875        Problem: thsice_solve4temp has an unvectorizable statement that
1876        might also be problematic for TAF
1877      - thsice_get_exf: add the ALLOW_BULK_LARGEYEAGER04 CPP-flag. This
1878        does not change the verifcation experiment, but will change all
1879        experiments that have this flag undefined (not tested in verification);
1880        a little reorganization to save a few 2D fields and recomputations
1881      - 1st step of revisiting thsice adjoint (major recomp. sorted out)
1882      - 2nd step:  fix some store dirs
1883        o seems to work somewhat, i.e. using ifort but not g77
1884        o likely cause are incomplete init. or recomputation
1885        o start verification/global_ocean.cs32x15/input_ad.thsice
1886    o pkg/obcs: add support for exch2
1887      - the position of the boundary and prescribed values are specified using
1888        a global domain with exch2 facets stacked
1889        - in x for N,S boundaries (like W2_mapIO=-1)
1890        - in y for E,W boundaries (so E,W boundaries do not overlap)
1891    o pkg/mdsio: add support for writing global sections with exch2
1892        file layout is as for obcs described above:
1893        - for x-z sections, facets are stacked in x (like W2_mapIO=-1)
1894        - for y-z sections, facets are stacked in y
1895    o pkg/thsice:
1896       - change a few routines for better vectorization: thsice_albedo.F,
1897         thsice_step_temp.F, and in thsice_calc_thickn.F. Results are
1898         not affected, but in particular the latter routine has changed
1899         dramatically (not necessarily easier to read now).
1900       - re-arrange calculation in THSICE_SOLVE4TEMP: move outside of i,j loops
1901       iteration loop and call to S/R THSICE_GET_BULKF & THSICE_GET_EXF.
1902    o verification/lab_sea:
1903      - overhaul of the forward model experiments. The main motivation
1904        for this revision is that lab_sea has proven quite fragile (when
1905        changing the sea-ice code, and switching platforms) to a point
1906        when failures were very hard to attribute to specific code problems.
1907      - the suspected reason for this fragility is noise amplification by evp so,
1908        to start with, we decided to replace evp with lsr in the main experiment.
1909      - the input.lsr experiment thus became obsolete and was removed.
1910      - it was replaced with the input.fd experiment that uses an
1911        analytical "free drift" solution as the ice velocity field.
1912      - Taken together, input (lsr), input.fd (free drift) and input.hb87 (evp)
1913        will hopefully allow us to discriminate problems due to dynamic solvers
1914        from problems due to the thermodynamic code. input.salt_plume (lsr) allows
1915        us to test additional options, along with the salt plume package.
1916      - Finally a pickup was generated (at the end of a one year run) to
1917        make the tests more representative of an actual model run. Previously
1918        the tests starting point was a 1m thickness of ice everywhere.
1919    o pkg/seaice:
1920      - introducing S\R seaice_freedrift.F that compute the
1921        analytical solution to an approximate ice momentum
1922        equation (i.e. the simple stress/coriolis balance).
1923      - define SEAICE_ALLOW_FREEDRIFT to trigger the computation
1924        of the free drift velocity field, and enable its use.
1925        To actually use the free drift solution as the model ice
1926        velocity field set SEAICEuseFREEDRIFT to .TRUE. in data.seaice.
1927    o move "useOASIS" from PARAMS.h to EEPARAMS.h and read it from "eedata"
1928    
1929    checkpoint62l (2010/10/04)
1930    o pkg/seaice:
1931      -fix the USE_ORIGINAL_SBI version (for variable freezing point);
1932      -use "celsius2K" in SEAICE_VARIABLE_FREEZING_POINT and in new
1933       version (with USE_ORIGINAL_SBI undef);
1934    o add hooks for new packages OASIS, the package will follow
1935      (hooks exclude the seaice pkg for now)
1936    o pkg/autodiff: ALLOW_AUTODIFF_WHTAPEIO
1937      Option to use mdsio_read_whalos.F/mdsio_write_whalos.F,
1938      rather than mdsio_readvector.F/mdsio_writevector.F, within
1939      adread_adwrite.F to read/write adjoint-related tapes to disk.
1940    o eesupp and pkg/mdsio: ALLOW_WHIO
1941      Option to write/read 2D fields to files including tiles halos.
1942      The main purpose is for adjoint related "tape I/O".
1943      The secondary purpose is for debugging phases.
1944      A word on those rather specifically intended purposes.
1945      The code was meant to be stripped down to the bare minimum.
1946      Typically, there is a unique and basic mapping to the global
1947      buffer (tile by tile, then proc by proc, then level by level), and
1948      byteswaps and meta-files are omitted. Indeed the (*_WH*) code is not
1949      meant to generate user friendly outputs of various shapes and forms.
1950      Rather it is intended, for the knowledgeabale developers,
1951      to be largely independent of the many mdsio options, to allow
1952      outputs of tiles+halos in debugging phases and in adjoint runs,
1953      and to allow some flexibility in tuning (adoint) I/O depending on each
1954      file system behavior. With regard to tuning, most of the potential knobs
1955      (to leave files open, to allocate the I/O indep. of usesinglecpuio,
1956      to specify directories, to specify the typical size of I/O calls, etc.)
1957      are not yet included, and will be added if they prove useful.
1958    o pkg/seaice:
1959       fix uninitialised arrays in USE_ORIGINAL_SBI version of seaice_solve4temp.F
1960    o pkg/seaice:
1961       new S/R seaice_solve4temp.F: this is the merged version of Ian Fenty
1962       code (seaice_budget_ice_if.F) which enable to recover old standard
1963       code (seaice_budget_ice.F) when option USE_ORIGINAL_SBI is defined.
1964       temporary: add "#define USE_ORIGINAL_SBI" at the top of seaice_solve4temp.F.
1965    o model/src (rStar):
1966       use simple average (not area weighted) of rStarFac at U,V point when using
1967       vectorInvariant and selectKEscheme=1,3 (consistent with mom. vertical advection)
1968       update output of exp. fizhi-cs-32x32x40 and fizhi-cs-aqualev20.
1969    
1970    checkpoint62k (2010/09/17)
1971    o adjoint
1972       * changed verification/global_ocean.cs32x15 ; adjoint now tests
1973         Adams-Bashforth 3 + NLFS + RSTAR
1974       * some more modifs required for ECCO-GODAE v4
1975    o pkg/seaice
1976       add SEAICE_AGE_VOL option to use volume instead of area for
1977       integrating SEAICE_AGE
1978    o model/src:
1979       first check-in of sigma & hybrid-sigma coordinate code ; also includes
1980       non-linear free-surface parts ; but pressure-gradient not yet coded.
1981    o pkg/ptracers:
1982       option for ptracer to convert Salt Relax into additional EmP.
1983        tested in exp. global_ocean.90x40x15.dwnslp (update output)
1984    
1985    checkpoint62j (2010/08/25)
1986    o pkg/ggl90:
1987       other minor changes: remove 3-D temp array gTKE (+ add argument myIter)
1988    o pkg/dic: car_flux.F, phos_flux.F
1989      - reduce number of exp-calls in order to improve performance
1990      - clean up a little (replace fields by their macros, etc., fix
1991        typo in CPP-flag)
1992    o pkg/ggl90: minor changes
1993      - GGL90diffKrS was removed --> always use GGL90diffKr
1994      - GGL90viscAr was removed --> replaced with GGL90viscArU, GGL90viscArV
1995      - hack of mxlMaxFlag=2 --> ensure mixing between first and second level
1996        (commented out for now)
1997      - change in max/min operations to ensure that smoothing is ok
1998      - smoothing of GGL90viscAr was moved to ggl90_calc.F (as done for GGL90diffKr)
1999      - always use diffKrNrT as background profile (i.e. never use diffKr field)
2000    o pkg/cfc: bug fix, AREA(i,j,1,bi,bj) -> AREA(i,j,bi,bj)
2001    o pkg/dic:
2002      - model/src/impldiff.F: if TARGET_NEC_SX, extend loop ranges for better
2003        vectorization
2004      - small bug fix in insol for the unlikely case of a cartesian grid
2005      - towards vectorizing the dic package: bio_export.F, car_flux.F, phos_flux.F
2006        + now vectorize, which also removes adjoint recomputations;
2007        + replace integer maksp1 by _RL maskp1
2008        + replace a**x by exp(x*log(a)) in phos_flux.F for speed
2009    
2010    checkpoint62i (2010/07/21)
2011    o pkg/flt:
2012      - with OBCS: stop floats which enter the OB region
2013    o model/src:
2014      - use tempVertAdvScheme & saltVertAdvScheme (instead of horizontal ones)
2015        for implicit vertical advection.
2016    o pkg/seaice:
2017     - account for melting in seaice age evolution.
2018     - remove double counting of seaice ridging effect on seaice age.
2019    
2020    checkpoint62h (2010/06/18)
2021    o pkg/exch2:
2022     - remove exch2_*xy_rx files: call was replaced with exch2_*3d_rx(myNz=1).
2023    o tools/genmake2
2024      - remove "-pdefault" option: redundant with the use of "packages.conf";
2025      - remove file pkg/pkg_default : set the default as a pkg group
2026        ("default_pkg_list") defined in pkg/pkg_groups;
2027      - fix for case pkg/pkg_depend is missing (was hanging before);
2028      - add option "-pgroups" to specify a different pkg_groups than the default.
2029    o verification/adjustment.cs-32x32x1:
2030       add a "minimal" set-up test (code_min & input_min) which only compiles
2031       eesupp/src and the 2 pkgs (exch2 & debug) which don't need model/src & inc.
2032    o tools/genmake2
2033      - extend pkg_depend rules to model & eesupp (e.g., if model depend on [pkg]))
2034      - fix details of checking for mnc & profile pkg when NetCDF is unavailable.
2035    o pkg/exf: merge exf_bulk_largeyeager04 into exf_bulkformulae because these
2036      files are nearly the same anyway.
2037      Step 1: make exf_bulkformulae look like exf_bulk_largeyeager04:
2038       - redefinition of tau(i,i) (by a factor of ustar)
2039       - 1./exf(Const/T) -> exf(-Const/T) (big change in the results)
2040       - replace rhonil by rhoConstFresh in computation of evap (bug fix)
2041       - replace u/vstress=tau*rd*ws*cw by tau*rd*u/vwind (changes results)
2042       - replace
2043         rd(i,j)= rdn(i,j)/(exf_one - rdn(i,j)/karman*psimh )
2044         shn    = sh(i,j,bi,bj)*rd(i,j)/rdn(i,j)
2045         by
2046         shn    = sh(i,j,bi,bj)/(exf_one - rdn(i,j)/karman*psimh )
2047         (changes results)
2048       -> exf_bulkformulae v1.22,
2049          update verification experiments lab_sea, offline_exf_seaice, seaice_obcs
2050          (lab_sea: output.hb87.txt 1.11, output.lsr.txt 1.25, output.salt_plume.txt 1.13,
2051                    output.txt 1.63
2052           offline_exf_seaice: output.seaicetd.txt 1.7
2053           seaice_obcs: output.txt 1.10)
2054      Step 2: do the actual merge and remove exf_bulk_largeyeager04.F
2055       -> exf_bulkformulae v1.23,
2056          unfortunately requires updating lab_sea.salt_plume (6 matching digits),
2057          and global_ocean.cs32x15.icedyn (only 11 matching digits)
2058      Also update output_adm of exp. lab_sea (all 4) and offline_exf_seaice.
2059    o adjoint of exch-1:
2060     - pass high-level EXCH S/R through TAF (eesupp/src/exch_ad_diff.list)
2061       (note: was already like this when using EXCH-2) and remove flow dir
2062       and hand-written AD version of high-level EXCH S/R (pkg/autodiff);
2063     - provide flow-dir for low-level exch1 S/R (eesupp/src/exch1_ad.flow);
2064     - update pkg/exch2 diff list.
2065    
2066    checkpoint62g (2010/05/19)
2067    o eesupp/src (exch-1):
2068     - split exch_rx.F into Forward S/R (exch1_rx.F) and Adjoint S/R (exch1_rx_ad.F)
2069       and remove argument "simulationMode"; same thing for all exch_*rx_cube.F
2070       (renamed to exch1_*rx_cube.F).
2071     - change accordingly exch_*_rx.template and AD version in pkg/autodiff
2072       to call new exch1 S/R ; update Makefile and .cvsignore.
2073     - replace call to exch2_xy_rx S/R with exch2_*3d_rx(myNz=1) (will remove
2074       exch2_xy_rx later)
2075      Note: after updating your code, need to run "make clean" in eesupp/src
2076    o test experiment bottom_ctrl_5x5:
2077       new output_adm.txt with fewer grdchk & less monitor output.
2078    o model/src:
2079      remove the call to ini_cori in initialise_varia.F (just keep the usual one
2080       in initialise_fixed.F). More consistent with coriolis & horizontal grid
2081       beeing treated in the same way (ini_grid is not called a 2nd time).
2082    o pkg/exf:
2083      - rewrite exf_bulk_largeyeager04.F for better vectorization, changes
2084      global_ocean.cs32x15/input.icedyn (11 digits of agreement), updated
2085      - fix adjoint (used worked for ALLOW_ATM_WIND defined, works for this now)
2086      - cosmetic changes to exf_bulkformulae.F to make it look more like
2087        exf_bulk_largeyeager04.F
2088    o eesupp/src (exch-1):
2089      - Fix AD EXCH code for 2-D domain special cases (Nx=1 or Ny=1).
2090      - Separate buffer filling and MPI sending: allow EXCH-1 to work for local
2091        array (non-shared) when using MPI+MTH. Also reduces number of BARRIER
2092        (even without using MPI).
2093      - Message mode: move RecvAck setting (indicator of buffer being ready)
2094        from send_put to recv_get S/R (was useless before, but not sure if
2095        it's much more useful now);
2096      - Switch the order of sync: MPI-proc 1rst and then threads;
2097      - take out spin-waiting code (#undef EXCH_USE_SPINNING), use BARRIER instead.
2098      - fix AD code for communication mode ='get' (but not used).
2099    o model/src:
2100      initialise dPhiHydX,dPhiHydY inside calc_grad_phi_hyd.F (so that TAF does
2101      not drop it in S/R mddynamics, producing NaN in hs94.1x64x5 AD-test exp).
2102    o utils/matlab/rdmnc.m: adapt to be able to use the generic matlab netcdf API
2103    o pkg/ctrl: require a specific set of control variables and exf-flags for
2104      adjoint of seaice (stop in ctrl_check.F if conditions are not satisfied)
2105    o model/src:
2106     a) 1rst version of a new driver S/R to turn-off output freq and flags after the
2107       1rst forward sweep, to avoid over-writing output files during recomputations
2108       recomputations (& grdchk); called from cost_final.F (& ctrl_init_ctrlvar.F ?)
2109     b) 2nd version:
2110      - add specific pkg S/R for seaice & ptracers (called from S/R TURNOFF_MODEL_IO);
2111      - switch-off more output flags (exf_monFreq, chkPtFreq, dumpInitAndLast,
2112         writePickupAtEnd) + seaice & ptracers output;
2113      - do not switch off MNC flags (otherwise, won't get admonitor netcdf file)
2114    o model/src:
2115      - new S/R rotate_uv2en_rl (..._rs) that rotates vector fields.
2116    o pkg/exch2:
2117      - remove "simulationMode" from arg. list of S/R EXCH2_RX1,2_CUBE ;
2118      - add argument "signOption" to EXCH2_RX1_CUBE (will be needed for SM exch).
2119    o pkg/autodiff & exch2:
2120      process exch_uv_agrid_3d_rx.f & exch2_uv_agrid_3d_rx.f through TAF
2121      (for now, only if ALLOW_EXCH2 is defined).
2122    o pkg/autodiff:
2123      - include PACKAGES_CONFIG.h in exch*ad.flow & exch*ad.F
2124        (not supposed to be in CPP_OPTIONS.h) to get ALLOW_EXCH2 defined correctly.
2125       + clean-up comments (_RS is not always real*4)
2126      - fix bug in ADEXCH_UV_3D_RX (without EXCH2, was calling the forward exch S/R)
2127      - add a stop in ADEXCH_UV_AGRID_3D_RX if trying to use it with EXCH2:
2128        was calling a forward exch2, which is wrong ; used in SEAICE & EXF pkgs.
2129    o testreport (AD-tests):
2130      no longer link files from dir "../input" (1rst link files from
2131      "../input_ad.[xx]" if secondary test "xx" and then from "../input_ad")
2132    
2133    checkpoint62f (2010/04/29)
2134    o model/src/the_main_loop.F:
2135      adjust store directives for seaice evp and multicategory according to
2136      pkg/ecco/the_main_loop.F
2137    o adjoint:
2138      global_sum_ad was incomplete (noted many times by many people ;)
2139      nice description by Jean U. as follows:
2140      * allreduce(var) in global_sum.F can be interpreted as
2141        reduce(sum) followed by broadcast of sum.
2142      * The adjoint of that is
2143        sum(adjoint) followed by broadcast(summed adjoint value)
2144        or in other words, allreduce(sum, adjoint vars)
2145      We were missing the sum(adjoint)!
2146      Benign, except(!) for "global" scalars appearing in tile loops (bi,bj)
2147      (noted by J.M. Campin, e.g., in cost_ssh_mean, variable offset).
2148      The fix should produce 16-digit accuracy between
2149      single-CPU multi-tile (e.g. nSx=2, nPx=1) and
2150      multi-CPU single-tile (e.g. nSx=1, nPx-2)
2151      We'll probably change this yet again shortly
2152    o eesupp/src:
2153      - fix global_sum_r4 (wrong from previous modif in Jun 2009; ever used ?)
2154    o pkg/icefront
2155      - ALLOW_SUBGLACIAL_RUNOFF option adds capability for time-evolving
2156        specification of addmass array based on a 2D field, which is added
2157        at bottommost wet level at each horizontal location.
2158    o model/src:
2159     horizontal grid initialisation (other than curvilinear): add code for Exch2 IO
2160     layout; (not always compatible with delX,delY setting; commented out for now).
2161    o pkg/exch2:
2162     change tile to processor setting (case nSy*nPy > 1): allows default model mapping
2163     (myX and myYGlobalLow) to be used for simple (1 facet, no blank tile) config.
2164    
2165    checkpoint62e (2010/04/15)
2166    o pkg/obcs:
2167      - fix wrong index in OBCS_SPONGE_V for Eastern-OB (reported by David Hebert).
2168    o pkg/dic:
2169      -fix bug in fe_chem.F for multi-tile (nSx*nSy > 1) set-up;
2170        (note: not presently tested in any forward verification exp.)
2171       update tutorial_global_oce_biogeo AD output file.
2172    o pkg/exf:
2173      - account for the variation of albedo as a function of zenith angle
2174        by defining ALLOW_ZENITHANGLE in EXF_OPTIONS.h
2175    o build_options:
2176     - rename "linux_ia64_ifort+mpi_ice_nas" to "linux_amd64_ifort+mpi_ice_nas"
2177    o pkg/dic:
2178      change DIC atmos-CO2 box (method 3, dic_int1=3) initialisation & restart:
2179      - use binary pickup file for restart;
2180      - initialise atmos-CO2 box from dic_pCO2 parameter;
2181      - fix multi-threaded.
2182    o pkg/rbcs:
2183     - clean-up RBCS code: add RBCS_OPTIONS.h file ; fix multi-threaded ;
2184       change (+ fix IO calls) type of array RBC_mask from _RL to _RS.
2185     - add RBCS to exp4 passive tracer 01 (rbcs was previously untested)
2186       and update output.txt
2187    o pkg/kpp:
2188     - add diagnostics for KPP non-local flux of Temp, Salinity and pTracers;
2189     - change diagnostic of KPP non-local term: output average of KPPghat*KPPdiffKzS
2190       (= ratio of KPP non-local (salt) flux relative to surface-flux) when
2191       using pkg/timeave & pkg/diagnostics (diag 'KPPghatK' replaces 'KPPghat ');
2192     - change pkg/offline to read-in average KPPghat*KPPdiffKzS from file
2193       KPP_ghatKFile (instead of the average of KPPghat from file KPP_ghatFile).
2194    o pkg/offline:
2195      fix bug in S/R OFFLINE_FIELDS_LOAD regarding surfaceForcing conversion factor
2196      (bug was added in version 1.10 on 2007-08-23).
2197    o pkg/offline:
2198      - no need to specify periodicExternalForcing, etc ... to use offline pack
2199      - offline input files no longer just single prec --> parameter offlineLoadPrec
2200    o verification/lab_sea:
2201      change AD test to multi-tile setup and update all 4 AD output.
2202      NOTE: while cost function values remain very similar,
2203      gradients are very different, although gradient checks are self-consistent
2204      Should try to get to the bottom of this (cost function summation order?)
2205    o pkg/dic:
2206      in carbon_chem.F, replace log10 (AUTODIFF) with explicit form to avoid
2207      a weakness of TAF that drops part of double precision in log10 derivative.
2208      <= changes removed since problem has been fixed in current TAF version 1.9.71
2209      update AD output of exp. tutorial_dic_adjoffline & tutorial_global_oce_biogeo.
2210    o pkg/ecco:
2211      add missing "_d 0" in cost_readers.F, cost_readtopex.F & cost_readtopexmean.F
2212      update all 4 lab_sea AD output.
2213    
2214    checkpoint62d (2010/03/22)
2215    o build_options:
2216      remove '-r8' (and '-i4') from linux_*pgf and linux_*ifort optfiles.
2217    o remove unbalanced quote (single or double) in commented line of source code
2218      (may cause some warning with some preprocessor/makedepend versions).
2219    o pkg/seaice:
2220      fix seaice_model.F for adjoint (gael) and update AD results of experiments
2221       lab_sea (std + evp + noseaicedyn) and offline_exf_seaice.
2222    o testreport:
2223      add option '-runonly' (short: '-ro') to just do the run part (without make).
2224    o eesupp: remove JAM communication code (obsolete).
2225    o add option to genmake2 & testreport to switch "_RS" type to "real*4"
2226      (if allowed in CPP_EEOPTIONS.h); update default CPP_EEOPTIONS.h and return
2227      to default CPP_EEOPTIONS.h for exp. inverted_barometer & solid-body.cs-32x32x1
2228      (update also the output).
2229    
2230    checkpoint62c (2010/03/02)
2231    o tools/build_options :
2232       move (some) old optfiles from build_options/ to build_options/unsupported/
2233    o model/src and pkg/exf
2234       surface relaxation -- separating data and data.exf options
2235       The point is to ensure that we specify the surface relaxation
2236       either in data or in data.exf (but not half and half) and to
2237       avoid an accidental relaxation to 0 (which happened if a time
2238       scale was specified but the file name was left empty)
2239    o model/src model/inc and pkg/mom_common
2240       ALLOW_3D_VISCAH/ALLOW_3D_VISCA4 => 3D specification of Viscosity
2241       => addition to the viscosity field as computed by others schemes
2242    o tools/build_options:
2243      - rename "_generic_mpi" -> "+mpi_generic" (like other "+mpi" optfile)
2244        but keep the former optfile for few weeks for smooth transition
2245    o pkg/ecco
2246      - allow user defined cost function contributions
2247         CPP: ALLOW_USERCOST_CONTRIBUTION
2248         USAGE: compute contributions in cost_usercost_all.F
2249      - note: this is identical to what ALLOW_GENCOST_CONTRIBUTION once was.
2250          the two options are complementary.
2251    o pkg/smooth
2252      - migration from contrib to the main repository
2253    
2254    checkpoint62b (2010/01/26)
2255    o pkg/monitor:
2256      - change back mon_printstats_rl.F & mon_stats_rl.F and add a stop
2257        (in case someone forgot to update customized pieces of code)
2258    o nonHydrostatic:
2259      - add Non-hydrostatic free-surface form (selectNHfreeSurf=1)(not fully tested);
2260      - add a simple 2-D experiment (short_surf_wave) to test it.
2261    o pkg/icefront:
2262       adding the shell of, and the hooks to, a new package that
2263       will model melting and freezing of vertical glacier ice fronts
2264    o momentum:
2265      add diagnostics of momentum tendency from Hydrostatic pressure gradient
2266       (without surf.pressure term: would need a 2nd filling since implicit term).
2267    o add 3 "_d 0"s so that fizhi compiles with xlf on iblade, and replace
2268      two " &end" by " &" (in fizhi-cs-*) because S/R NML_SET_TERMINATOR
2269      cannot deal with the former
2270    o cleaning:
2271      - remove all (except OpenAD) old TLM output from results_ad dirs.
2272      - remove unused S/R (MDSWRITEMETA, DIAGNOSTICS_ADD2LIST, old DFILE IO S/R)
2273      - comment out maskH definition (replaced by maskInC)
2274    o pkg/monitor:
2275      - change mon_printstats_rl.F & mon_stats_rl.F (were similar to mon_writestats_rl
2276        & mon_calc_stats_rl) to be the RL equivalent of mon_printstats_rs & mon_stats_rs.
2277    
2278    checkpoint62a (2010/01/15)
2279    o model/src:
2280      - bottom pressure diagnostic: correct for r* (when nonlinFreeSurf >= 4)
2281    o pkg/diagnostics:
2282      - add optional level number diagnostics (i.e., level number to be define
2283        explictly with S/R DIAGNOSTICS_SETKLEV) with parser-code(10)="X".
2284      - strictly check for valid parser-code(10) ;
2285      - check if adding diag to the list from the right place.
2286    o pkg/longstep:
2287      - change parameters and fix tracer conservation with rstar/nonlinear free surface
2288    o diagnostics:
2289     - in all pkgs, replace remaining calls to old S/R DIAGNOSTICS_ADD2LIST with newer
2290       S/R DIAGNOSTICS_ADDTOLIST ; fix seaice VICE diagnostics.
2291    o pkg/diagnostics:
2292     - Add option for writing vertical integral (sum of selected levels) of an output
2293        field instead of writing output field levels. Activate this option on a per
2294        output-file basis, by setting the 2nd character of fileflag to 'I'.
2295     - Add field-specific information relative to level integral in 3rd postion
2296        of parser diagnostics code (gdiag): " "=cumulate levels, "R"=integrate
2297        vertically (x level-thickness x hFac), "r"=same but without hFac.
2298    o do_the_model_io:
2299      - pass end-of-model-run flag as argument, from forward_step to diagnostics_write:
2300        in case useSIGREG, will write (averaged) diagnostics (if dumpAtLast) before
2301        writing pickups and stopping.
2302    o pkg/diagnostics (for now, only with mdsio):
2303      - write time information to meta file (and modify accordingly rdmds.m) :
2304        time-averaged diagnostics output: write starting and ending time of the
2305        time-averaging interval ; snap-shot diagnostics output remains unchanged;
2306    o pkg/timeave:
2307      - S/R TIMEAVE_NORMALIZ: change size of cumulated-time array (was previously
2308        always Nr), now assumed to be equal to number of levels of averaged field;
2309        only used for DIC_COST monthly mean arrays: this fixes dic_aver_final.F
2310    o pkg/sbo:
2311      - fix ocean bottom pressure global-average & 2-D time-ave output (was
2312        neither initialised nor filled).
2313      - add starting iteration in suffix of global-average output file
2314        (to avoid over-writing the file after a restart)
2315      - use standard MDSIO pkg S/R instead of SBO_WRITEVECTOR (fix byte-swap Pb).
2316    o time-average:
2317      - use simple cumulative-time array (no k index) in all pkgs: {PKG}_timeAve(bi,bj)
2318        (pkgs: aim_v23, bulk_force, dic, gmredi, kpp, land, ocn_compon_interf,
2319         ggl90, my82, opps, pp81, ptracers, sbo, seaice, shelfice, thsice)
2320        this fix DIC_COST cumulative-time array (previously: bi,bj,k)
2321      - fix 1rst call (nIter0) snap-shot output and accumulation (pkg/shelfice)
2322      - fix missing accumulation for pkg/opps.
2323      - cumulate fields only if doing time-ave output ({PKG}_taveFreq > 0)
2324         (pkgs: ptracers, kpp, ocn_compon_interf, ggl90, my82, pp81);
2325      - fix initialisation of time-ave vars and do only full time-step increment
2326        (i.e.: no first & last "half time-step") (pkgs: ggl90, my82, opps, pp81);
2327    o pkg/layers:
2328      - use standard RW pkg S/R to write the output
2329        and remove local write_fld version (which had a problem).
2330      - use simple cumulative-time array (no level index) to fix time-ave S/R calls.
2331      - fix LAYERS_CALC argument list.
2332    o pkg/timeave:
2333      - store cumulative-time in a simple tiled array (drop the level index)
2334      - add new S/R (TIMEAVE_NORMALIZE) which uses simple cumulative-time array.
2335    o pkg/ocn,aim_compon_interf
2336      - changes for multi-threaded coupled run. (tested with ifort-11 on danton)
2337    
2338    checkpoint62  (2009/12/23)
2339    o switch on useOBCSbalance in tutorial_plume_on_slope exp. and update output.
2340        (was not previously tested in any other exp.)
2341    o pkg/monitor:
2342      - clean-up _RL/_RS version: add specific S/R for statistics with mask & volume:
2343        mon_writestats_rl/s,F mon_calc_stats_rl/s.F ; will keep the old one
2344        (mon_printstats_rl/s,F mon_stats_rl/s.F) just for bare statistics.
2345      - use hFac & 2-D mask (instead of 3-D mask + hFac in previous mon_stats_rl.F).
2346      - change del2 calculation.
2347      - use interior masks (instead of maskH, <- to be remove).
2348      - shorter monitor suffix for forcing stats ("forcing" instead of "extforcing").
2349    o mask & obcs:
2350      - define 2-D "interior" masks (i.e., zero beyond OB) at 3 locations (C, W & S).
2351      - move global area computation from ini_masks_etc.F to ini_linear_phisurf.F
2352        (called after packages_init_fixed)
2353    o pkg/obcs:
2354      - move bi,bj loops into obcs_calc, so obcs_prescribe_read is called only once.
2355        Fixes bug in obcs+exf with nSx*nSy.GT.1
2356      - fix multi-tile handling in obcs balance code
2357    o nonHydrostatic:
2358      - Implement AB-3 for non-hydrostatic vertical momentum ;
2359        (change ordering of var. stored in pickup file when using NH)
2360      - move NH code from solve_for_pressure.F to 2 new S/R: PRE_CG3D & POST_CG3D.
2361      - add 2-D field to store Hydrostatic Surface Pressure adjusment from cg3d_x
2362        (in prep. for new NH free surface form).
2363    o pkg/obcs:
2364      add files & OB-variables for wVel (Non-Hydrostatic) with useOBCSprescribe
2365    o model/src:
2366      fix 2-D solver initialisation for deep-atmosphere (p-coord) with topography
2367    
2368    checkpoint61z (2009/12/01)
2369    o nonHydrostatic:
2370      Fix missing vertical flux of vert. momentum near surface (k=1). This fixes
2371        a spurious source of energy in simple baroclinic adjusment test case.
2372      Update all non-hydrostatic exp output.
2373    o model/src (3-d solver):
2374      Change again 3-D solver free-surface RHS term when exactConserv=T:
2375        simpler, consistent with exactConserv, and works with implicDiv2Dflow < 1
2376        (which was not the case with previous formulation).
2377      To recover previous version, just reset "oldFreeSurfTerm" to previous value.
2378      Affects results of exp. global_ocean.cs32x15.viscA4 & hs94.cs-32x32x5.impIGW.
2379    o nonHydrostatic:
2380      - compatible with implicDiv2Dflow < 1 ; + implement implicit factor
2381        for Non-Hydrostatic pressure gradient (similar to implicSurfPress).
2382      - change 3-D solver to work with r* (for now, only with linear free-surf.)
2383      - add few debug diagnostics (cg3d_x, residual)
2384    o model/src:
2385      fix missing EmPmR in 3-D solver RHS (was in cg2d_b but missing in cg3d_b).
2386        update output of exp. global_ocean.cs32x15.viscA4
2387    o update output of exp. global_ocean.cs32x15.icedyn after removing
2388      #define SEAICE_OLD_AND_BAD_DISCRETIZATION from SEAICE_OPTIONS.h
2389    o add entry points for Gianmaria's Nesting pkgs (from Contrib/nesting_sannino)
2390    o mnc: add horizontal grid coordinates (XC,YC) and (XG,YG) to netcdf output
2391      for complex grids, for now only to "state", "adstate", "adexf", "adseaice"
2392    o model: add Christopher Wolfe's implemetation of the single reduction cg2d
2393      (d'Azevedo, Eijkhout, and Romine, 1999) with CPP-flag ALLOW_SRCG and
2394      runtime flag useSRCGSolver. Modify verification experiment global_with_exf
2395      to test this code
2396    o pkg/cd_code:
2397      Change defaut D-grid time-stepping to get the same for D-grid momentum as for
2398       C-grid momentum. D-grid velocity used to be stepped forward in time with
2399       Adams-Bashforth only on surface pressure term. Tests show that using AB on
2400       D-grid coriolis term improves stability (as expected from CD-scheme paper).
2401      To reproduce old results, add 2 options (in CD_CODE_OPTIONS.h).
2402      Update results of exp: global_with_exf (x2), ideal_2D_oce, isomip (x2),
2403       lab_sea (3 Fwd +3 AD), natl_box (x2), tutorial_global_oce_biogeo (Fwd+AD),
2404       tutorial_global_oce_latlon, tutorial_global_oce_optim & tutorial_tracer_adjsens.
2405      Keep old results by adding CD_CODE_OPTIONS.h in exp: cfc_example, exp2,
2406           global_ocean.90x40x15(+AD), global_ocean_ebm(+AD) and OpenAD.
2407    o pkg/obcs:
2408     - fix bug in initialisation (broken since Oct 1rst modification)
2409       for useOBCSprescribe without useEXF.
2410    
2411    checkpoint61y (2009/11/15)
2412    o pkg/seaice
2413     - change (once again) the discretization for the evp solver: rather than
2414       squaring the averages of strain rates, average the squares to give
2415       a better approximation to VP behavior (in simple test); this breaks
2416       verification experiments that use EVP (lab_sea and lab_sea.hb87)
2417        --> update outputs
2418    o add CPP-flag (in mom_calc_visc.F) and TAF directive (in gmredi_slope_limit)
2419      to improve vectorization of adjoint code on TARGET_NEC_SX
2420    o verification/vermix:
2421      - change vermix to a more "classical" 1d column with high vertical
2422        resolution, seasonal heat flux forcing and constant wind forcing
2423        --> update outputs
2424    o pkg/seaice
2425     - fix diagnostics of principal stress components for EVP
2426     - add optional diagnostics of non-linear convergence for LSOR solver
2427     - make maximum zeta a runtime parameter
2428    o model/src (3-d solver):
2429      Undo modif from Dec 12, 2005 (solve_for_pressure.F cvs version v.49),
2430       which consisted in removing the Surf. Non-Hydrostatic pressure from the
2431       whole column and adding it to Eta (inspired from Casualli, 1999):
2432       Only affects 3-D solver initial guess and only if using ExactConserv,
2433       but tests did show a degradation of solver convergence. For this reason,
2434       decide to disable this piece of code.
2435       to recover previous version, just set zeroPsNH = exactConserv (line 78).
2436      Update output of exp. global_ocean.cs32x15.viscA4 & hs94.cs-32x32x5.impIGW
2437    o pkg/ggl90:
2438     - fix previous modif (unfortunatly has not been documented here).
2439    o pkg/seaice/autodiff:
2440     - add CPP flag to include clipping of zeta in EVP code;
2441       although clipping of zeta is not necessary for EVP and not recommended
2442       it was done by default, now clipping is disabled by default
2443     - modify computation and store zetaC/Z in seaice_evp for TAF
2444     - add CPP-flag SEAICE_ALLOW_CLIPVELS (undefined by default)
2445     - change seaice_calc_viscosities/strainrates for better
2446       vectorization after AD by TAF
2447     - rearrange common blocks in SEAICE.h once again for easier dumps of
2448       adjoint output, adjust adcommon.h and g_common.h
2449     - change flux form of default advection scheme for better vectorization
2450       of adjoint code
2451     - modify lab_sea/input.lsr to test the flux form of default advection
2452       scheme
2453    o autodiff: fix seaice fields in g_common.h (left over from 3 to 1 level
2454      transition in checkpoint61r)
2455    
2456    checkpoint61x (2009/10/19)
2457    o adjoint: adding two new verification experiments
2458      * tutorial_global_biogeo: an online dic sensitivity experiment
2459        (work with G. Forget)
2460      * tutorial_dic_adjoffline: an offline dic sensitivity experiment
2461        (an update of the Dutkiewicz et al., 2006 paper)
2462      Both use the same CO2FLUX cost function, but different controls
2463      Gradient checks look good, but some recomp. could still be traightened out
2464      Should add xx_dic control variable to test at some point
2465    o model/src:
2466      add run-time parameters to check and/or mask initial Temp & Salt
2467    o pkg/ptracers:
2468      apply zonal filter (if used) to all passive tracers
2469    
2470    checkpoint61w (2009/10/12)
2471    o adjoint:
2472      * update and finish work on adjoint of dic package (G. Forget)
2473      * start adjoint of offline package
2474      * bug fix for cube-sphere TLM code (active_file_g.F)
2475    o tutorial_global_oce_optim:
2476      now tested with 4 tiles (change data.grdchk and update output_adm.txt)
2477      and add SIZE.h_mpi for MPI testing
2478    o pkg autodiff
2479     - fix bug in autodiff_restore
2480     - make genmake2 remove comments and empty lines from ad_input_code.f in
2481       order to reduce file size (new script file remove_comments_sed)
2482    o allows to specify vertical profile of vertical viscosity (viscArNr)
2483    o pkg autodiff
2484      autodiff_ini_model_io: comment out writing of grid information to netcdf
2485      files, because at this time the grid fields are a bunch of zeros
2486      (this is analogous to ini_mnc_vars.F)
2487    o pkg seaice/autodiff:
2488     left-over from removing the 3-time-level fields:
2489     - small rearrangement of common blocks (SEAICE.h)
2490     - fix field declaration in order to get meaningful output in
2491       adseaice.*.nc (adcommon.h)
2492    o pkg obcs:
2493     - go through NH code only if nonHydrostatic=T
2494     - fix restart for Orlanski (Hydrostatic; still to fix NH+Orlanski restart)
2495     - move call to OBCS_CALC before SEAICE_MODEL which needs seaice-obc fields
2496       => Update output of experiment seaice_obcs
2497     - useOBCSbalance: code is wrong with multi-tile / proc: add a stop.
2498     - fix NH+Orlanski restart (add wvel OBC value in pickup file)
2499     - fix restart for useOBCSprescribe + useEXF
2500    o pkg ctrl
2501     - make obcs as control parameter work also with useSingleCPUio
2502     - replace a few sny and snx by Ny and Nx to be consistent with
2503       ctrl_set_globfld_x/yz.F
2504    o pkg seaice
2505     - re-introduce global field frWtrAtm for the case of
2506       ALLOW_MEAN_SFLUX_COST_CONTRIBUTION defined (SEAICE.h, seaice_growth.F)
2507     - catch the case of an empty filename in seaice_cost_init_fixed.F
2508    o pkg ecco:
2509     - small bug fixes in the_main_loop
2510      . fix order of monitor arguments
2511      . change SEAICE_MULTILEVEL to SEAICE_MULTICATEGORY
2512      . move include DYNVARS.h up outside the ALLOW_AUTODIFF_TAMC block so
2513        that ALLOW_ECCO_FORWARD_RUN works with NONLIN_FRSURF
2514     - replace cos(yc*deg2rad) by _rA in cost_mean_heat/saltflux.F, fix the
2515       imbalance diagnostics for wmean_h/sflux = 0
2516     - add actual values to f_obcsn/s/w/e in ecco_cost_final.F
2517     - catch the case of empty filenames in ecco_cost_init_fixed.F
2518       and ecco_readparms.F
2519     - fix the logic of wsalt=0.and.wsalt2=0 to wsalt=0.or.wsalt2=0 (and theta)
2520       to make this statement meaningfull in ecco_cost_weights.F
2521    o pkg zonal_filt:
2522      - change ZONAL_FILTER S/R interface (allows to filter 2-D fields)
2523      - when using rStar, filter uVel*hFacW instead of uVel
2524       (tested without topography: fix a Pb of growing instability with NLFS)
2525    o pkg/aim/thsice:
2526     -Add capacity to read a Q-Flux to be applied in slab-mixed layer thsice_slab_ocean.F
2527      (works as SST restoring)
2528    o pkg/thsice:
2529     -add specific parameter for salt restoring in slab mixed-layer
2530       (by default equal to the temperature restoring)
2531    
2532    checkpoint61v (2009/09/21)
2533    o pkg/kpp:
2534     -add double diffusive contributions as a hack, turned off by default
2535      for now, and the code can be excluded with a CPP-flag
2536      EXCLUDE_KPP_DOUBLEDIFF just as EXCLUDE_KPP_SHEAR_MIX
2537     -add a verification experiments to "vermix" to test this code
2538    o pkg/mom_common:
2539      Move computation of length scales to mom_init_fixed.F (avoid recomputation
2540      at each time-steps*levels).
2541    o pkg/layers:
2542      Created a new package for computing volume fluxes in temperature or
2543      [not yet implemented] density layers, e.g. for calculating residual
2544      overturning circulations.
2545    o pkg/diagnostics:
2546      implement a RS type version for the set of DIAGNOSTICS-FILL subroutines
2547    o fix few RS/RL type mismatch (check with ifort 11.1 "-warn all" option)
2548    o pkg/mdsio (& pkg/rw): rework high level S/R interface:
2549      To avoid mixing type (RS/RL) of input/output array argument,
2550      replace single mixed-type array with a pair from each type (RS/RL).
2551    o setting pickupSuff force to start from a pickup (even if nIter0=0): this
2552      is now implemented for all pkgs (previously only done for the main pickup)
2553    
2554    checkpoint61u (2009/08/25)
2555    o pkg/obcs:
2556      - change OB?eta from _RS to _RL and put them into a separate commen block
2557      - add code to read OB?eta from a file via obcs_prescribe_read: the code
2558        compiles and does not destroy any other experiments, the data is read
2559        properly, but the code is not tested in actual applications
2560    o ini_mnc_vars.F: if available (ALLOW_CAL), use startTime_1 and 2 to
2561      create a meaningful unit attribute for the time coordinate variable
2562    o pkg/ebm: add plenty of missing "_d 0" ;
2563       update results of experiment global_ocean_ebm (fwd + adjoint tests)
2564      Notes: several pieces of code only works for (very) specific set up
2565       (domain size, lat range, etc ...); should be documented & stop if one
2566       of those assumptions is not meet.
2567    o pkg/seaice: add missing "_d 0" in HSNOW initialisation
2568       update results of experiments: lab_sea (3 fwd tests + 2 adjoint tests)
2569          and offline_exf_seaice (seaicetd + adjoint).
2570    o add missing "_d 0" in ShortWave flux penetration (S/R SWFRAC):
2571       update results of experiments: lab_sea (4 fwd tests + 3 adjoint),
2572        seaice_obcs, global_ocean.cs32x15 (icedyn & thsice) and natl_box (x2).
2573    o few changes to pass when compiling with strick checking of arguments
2574       across S/R (allow to find few bugs in S/R calls).
2575    o pkg/seaice:
2576     - seaice_evp: move if-statement out of loop (TEM) at the cost of 11 new
2577       2d-fields, for slightly better performance
2578    
2579    checkpoint61t (2009/07/22)
2580    o pkg/seaice:
2581     - remove unused variables in seaice_evp
2582     - reduce number of SQRT in seaice_evp and seaice_calc_viscosities
2583    o eeset_parms.F, open_copy_data_file.F & ini_parms.F:
2584       named file replacing SCRATCH files (for TARGET_BGL & TARGET_CRAYXT):
2585       each processor opens a different file (a fix from Matt).
2586    o cg2d:
2587       use simple EXCH (overlap size = 1 and ignore corners), like in cg3d.F :
2588       this reduces number of EXCH calls by 2 when using exch2.
2589       For now, keep previous size array for gc2d_nsa.F to avoid Pb with store
2590       directives and missing simple EXCH (exch_s3d_rx) adjoint code.
2591    o pkg/thsice:
2592       add code for Near Infra-Red albedo (from Jeff)
2593       (turned on with run-time flag: thSIce_calc_albNIR, in data.ice).
2594    o ini_model_io:
2595       move (from packages_readparms.F & initialise_fixed.F) to ini_model_io.F
2596       MNC & MONITOR initialisation calls; move MNC calls from {pkg}_readparms.F
2597       to {pkg}_init_fixed.F for {pkg}= kpp, seaice & shelfice.
2598    
2599    checkpoint61s (2009/06/30)
2600    o pkg/exch2 (exch2_rxN_cube*):
2601       remove last BARRIER (no need to synchronise after getting data from shared
2602       buffer (get) as long as any change to buffer (put,recv) is between BARRIER)
2603    o change tiling of natl_box (from 2 to 4 tiles) to get it tested with MPI+MTH
2604      and generate new output (for the 2 tests) using default rotationPeriod.
2605    o pkg/exch2:
2606      - always call exch2_*_cube, not exch-1 anymore, if useCubedSphereExchange=F
2607        (was already the case with AUTODIFF_EXCH2 defined)
2608      - add bj in exch2 arrays and S/R.
2609      - can now use pkg/exch2 for regular (non CS) set-up; switch test experiment
2610        MLAdjust to exch2 (identical results except with MPI -> truncation diff);
2611    o add pkg/longstep for ptracer timestep a multiple of U/V/T/S timestep
2612      - adds deltaT argument to the subroutines TIMESTEP_TRACER DWNSLP_APPLY
2613        GAD_ADVECTION GAD_CALC_RHS GAD_IMPLICIT_R GAD_SOM_ADVECT
2614      - verification experiment natl_box.longstep
2615    o build_options: ifort+mpi_aces optfile (following Constantinos advise):
2616      allow different versions of ifort (8 or 9) and different versions
2617       of mpi (mpich or mpich2) to be used with the same optfile.
2618      requires to load a netcdf module and set MPI_INC_DIR (see comments inside
2619       optfile). Change testing scripts (example_scripts/ACESgrid) accordingly.
2620    o pkg/seaice:
2621      fix previous modif (3-level field removed) for old-pickup reading
2622    
2623    checkpoint61r (2009/06/25)
2624    o pkg/seaice:
2625     - clean up the 3-time levels of UICE,VICE,HEFF,AREA in three steps:
2626      1. introduce fields for time step (N-1)
2627      2. do not use levels 2 and 3 anymore (but keep them)
2628      3. replace 3D versions of UICE,VICE,HEFF,AREA by 2D versions. This
2629         includes changes to pkg/thsice/thsice_get_velocity.F,
2630         model/src/external_forcing_surf.F, pkg/obcs/obcs_apply_seaice.F, and
2631         pkg/obcs/obcs_apply_uvice.F.
2632     - completely remove code for leap-frog time stepping for second order
2633       advection
2634     - adjusted adjoint accordingly;
2635       gradient checks have improved by an order of magnitude!
2636    
2637    checkpoint61q (2009/06/22)
2638    o pkg/seaice: fix bug in free slip boundary conditons for LSOR solver
2639     - the boundary conditions along open boundaries are unclear, because the
2640       associated masks are set to zero and are thus treated as closed when
2641       applying the slip-boundary conditions.
2642     - move initialisation of grid variables from seaice_init_varia to _fixed
2643    o adding doc/diags_changes.txt
2644    o model/src:
2645      do_the_model_io: rename few pkg S/R which are called from do_the_model_io,
2646       to avoid "_diags" naming if no relation to pkg/diagnostics.
2647      ini_theta,ini_salt: fix (at least compile the code) reading from NetCDF
2648       file and only call PLOT_FIELD_XYZ if debugMode=T.
2649      remove few PLOT_FIELD_XY calls outside initialisation.
2650      remove few unnecessary BARRIER.
2651    o pkg/salt_plume: add SaltPlumeSouthernOcean to allow disabling
2652      of salt_plume package in Southern Ocean
2653    o pkg/thsice:
2654     - fix hOceMxL in overlap (needed for sea-ice advection);
2655       update output of experiment global_ocean.cs32x15.icedyn.
2656    o pkg/seaice:
2657     - make the (placeholder-)tracer IceAge a little more meaningful
2658      by avoiding ridging of age due to convergent ice flow
2659     - add diagnostics for surface temperature, atmospheric and oceanic
2660       heat flux, and atmospheric and oceanic ice growth
2661    
2662    checkpoint61p (2009/06/10)
2663    o eesupp (global_max & global_sum):
2664     - add one more element to buffer (start at index 0) for GL_MAX/SUM output;
2665     - remove starting & endding barrier (no longer needed)
2666    o pkg/mdsio, writelocal:
2667       works also in multi-threaded when LOCBIN_IO_THREAD_SAFE is undefined
2668       (remove the STOP): uses shared buffer IO to store data from all threads
2669       and then let master-thread write nThreads tiles.
2670    o pkg/mdsio (read/write field):
2671     - tiled IO done in 1 piece (all levels at a time);
2672     - new header file "MDSIO_BUFF_3D.h" with 3-D buffers.
2673     - multi-threaded: allow to read/write local (non-shared) array
2674       (was already working with singleCpuIO ; now works also without);
2675       => no longer needs barrier call after reading a file (added inside
2676       mds_read/write field).
2677     - move barrier calls outside gather/scatter_2d to mds_read/write_field
2678    o pkg/obcs/exf
2679      - exf_getffieldrec.F: add a few ". _d 0" and
2680                            add code to catch the case fldperiod = 0.  
2681      - obcs_precribe_read.F: change if statements so that they match
2682                              the variable type (_RL)
2683      - add a separate exf_iprec_obcs to exf_set_obcs (by default equal to
2684        exf_iprec) as part of namelist EXF_NML_01
2685    o pkg/mdsio:
2686      - read/write tiled (local) files: read/write 1-level tile chunk at a time
2687        (instead of segment of length sNx); expected to speed up tiled IO.
2688    o pkg/exch2:
2689      - take buffer copy from/to array out of S/R exch2_send/recv into new
2690        S/R exch2_put/get ; Exch of local variable now works with MPI+MTH
2691        (tested by removing commom block statement in SOLVE_FOR_PRESSURE.h).
2692      - ad version of send/recv no longer needed (but needs exch2_ad_put/ad_get)
2693      - simplify argument list of S/R exch2_get_uv_bounds and exch2_get_scal_bounds
2694        (which replaces exch2_get_recv_bounds & exch2_get_send_bounds) by
2695        including Topology header file (and common blocks).
2696      - implement EXCH_IGNORE_CORNERS in scalar exchange (rx1);
2697        remove 2nd exch call in exch2_s3d_rx (no longer needed).
2698      - document S/R arg. list (+ update some comments)
2699    o pkg/seaice:
2700      - added SEAICE_CLIM_AIR code, which permits modulation of surface air
2701        temperature and humidity over sea ice based on climatological values.
2702      - clean up computation of Hibler+Bryan (1987) stress coupling for the case
2703        of LSR (this change is expected to change the results slightly because now
2704        it uses slightly difference moduli from the second last LSR solution, but
2705        that is more consistent with the stress computations; this part of the code
2706        is not tested in the verification experiments)
2707      - fix diagnostics for flux of ice in case of B-grid
2708      - turn strain rates eij and press into global fields within global
2709        common block in SEAICE.h for more straighforward diagnostics
2710      - fix diagnostics for principal stress components, press, zeta, eta
2711        to give something meaning full
2712    o change tiling of global_ocean.cs32x15 (12 tiles, 32x16) and generate
2713      new output (all 4 tests) using default rotationPeriod.
2714    o pkg KPP:
2715      - add flag (LimitHblStable) to avoid limiting BL depth under stable conditions
2716      - fix vertical indices in RI_IWMIX (match between KPP grid from 0 to Nr+1
2717        and normal grid from 1 to Nr)
2718    o Fix computations of L4rdt in mom_calc_visc.F
2719    o eesupp:
2720      new S/R ALL_PROC_DIE (like EEDIE, without irrelevant threads err msg):
2721      should be called before a "stop" if we know that all process are going
2722      to stop; if one Proc does call this S/R, will hang in MPI_FINALISE.
2723    
2724    checkpoint61o (2009/05/26)
2725    o pkg/exch2: change check_depths to issue just a warning (instead of error+stop)
2726    o model/src/ini_curvilinear_grid.F:
2727       compute angleSin/CosC when they are not read from a file
2728    o pkg/seaice:
2729       add pseudo time stepping for LSOR
2730    o pkg/exch2:
2731       temporary fix for exch2_s3d_rx; update results of exp. hs94.cs-32x32x5.impIGW
2732    o pkg/seaice:
2733       Adding separate sea ice albedo, drag coefficients, and HO in Southern
2734       Ocean from those in Arctic Ocean.  See *_south in SEAICE_PARAMS.h
2735    o SingleCpuIO:
2736       fix bug put before chkp61n (May 11), when more than 2 MPI cpu are used.
2737    o pkg/seaice:
2738       put exchanged variable in (local) common block for MPI+Multi-Threads
2739       to work (necessary with exch1, and for now with exch2 too).
2740    o verification: to get more experiments tested with mpi, mth and mpi+mth,
2741      change tiling of:
2742       aim.5l_Equatorial_Channel, aim.5l_LatLon, dome, exp4, global_ocean.90x40x15,
2743       hs94.cs-32x32x5, MLAdjust, offline_exf_seaice & tutorial_plume_on_slope
2744      update output of exp:
2745       exp4, global_ocean.90x40x15(+.dwslp), MLAdjust(all 5),
2746       tutorial_plume_on_slope and hs94.cs-32x32x5 (use default rotationPeriod)
2747      + ideal_2D_ocean: use default rotation period + test Global_Sum_SINGLECPU
2748                       (note: output.txt generated on faulks using only 1 tile)
2749    o eesupp & mdsio (SingleCpuIO):
2750     - remove MISSING_TILE_IO (from MDSIO_OPTIONS.h), replaced by run-time
2751       parameter "W2_useE2ioLayOut" (read from file "data.exch2").
2752       Note: was not effective for globalFile & useSingleCpuIO=F; now fixed.
2753     - move MDSIO_SCPU.h (pkg/mdsio) to EEBUFF_SCPU.h (eesupp/inc).
2754     - fix GLOBAL_SUM_SINGLECPU when using Exch2; re-use same buffers and same
2755       gather/scatter S/R as with SingleCpuIO (=> 1 less 2D global RL array).
2756    o pkg/exch2:
2757     - new code to set-up W2-Exch2 topology (replace matlab-topology-generator):
2758       read parameter file "data.exch2" if it exists; otherwise try default regular
2759       cube without blank-tile; new header file "W2_EXCH2_SIZE.h";
2760     - update matlab-topology-generator (exch2_setup_cs6_print.m) to be compatible
2761       with new code (not to be used, just as a backup solution).
2762     - add examples (e.g., for lat-lon-cap_120) of parameter file "data.exch2"
2763       in utils/exch2/input.
2764    
2765    checkpoint61n (2009/05/12)
2766    o eesupp & mdsio (SingleCpuIO):
2767      - move mapping to global io-buffer inside gather_2d/scater_2d: this save
2768        memory (1 less 2D global RL array); skip 1 buffer copy; and only send/
2769        receive real*4 array (instead of real*8) to read/write 32.bit files.
2770        (new template for gather_2d/scater_2d, new set of S/R MDS_PASS_R4,8toRL,S
2771         and remove new mapping S/R)
2772    o pkg/mdsio: in preparation for topology-generator within pkg/exch2:
2773      - Change declaration of SingleCpuIO buffer, reduced to only 1 dim.:
2774        xyBuffer_size, which is set to W2_ioBufferSize from W2_EXCH2_PARAMS.h
2775        when using exch2. Add S/R to map global io-buffer to global model array.
2776      - uses exch2_global_Nx,y instead of exch2_domain_nxt,nyt.
2777    
2778    checkpoint61m (2009/04/29)
2779    o write_utils : change WRITE_1D_R8 to WRITE_1D_RL
2780      and add 3 other S/R for other types (R4,R8,RS).
2781      Change calls to WRITE_0D/1D_R[4,8,S,L] to match the type of argument.
2782    o eesupp/inc/CPP_EEMACROS.h (EXCH & GLOBAL_SUM/MAX macros):
2783     - ensure suffix (_R4,_R8,_RS,_RL) correspondance between macro and S/R ;
2784     - reduce number of macro definitions (keep only those which are used);
2785       can always call directly the corrresponding S/R if needed.
2786     - everywhere in the code: change macros (EXCH & GLOBAL_SUM/MAX) suffix
2787       _R4/_R8 to _RS/_RL when applied to _RS/_RL variable.
2788     Fixed wrong type of arg in:
2789       atm2d/put_ocnvars.F cheapaml/cheapaml.F ocn_compon_interf/ocn_apply_import.F
2790       ctrl/ctrl_map_ini_ecco.F seaice/seaice_do_diags.F seaice/seaice_model.F
2791     To fix: global_sum of var in common block is wrong (multi-threaded) in:
2792       dic/dic_atmos.F ebm/ebm_area_t.F ebm/ebm_zonalmean.F sbo/sbo_calc.F
2793     To fix: aim_v23/aim_do_co2.F (BARRIER & GLOBAL_SUM within bi,bj loops)
2794    o adjustment.cs-32x32x1: test "blank tiles" when compiling with mpi; 2nd
2795      "nlfs" mpi test is going to stop when checking for unconnected tile egdes.
2796    o eesupp/src: new S/R to stop everyone when 1 (or more) Proc. find an error
2797    o pkg/exch2: new S/R EXCH2_CHECK_DEPTHS to check that unconnected tile
2798      edges are closed (zero depth); might happen with "blank tiles";
2799      for now, disabled if using OBCS.
2800    o tools/gemake2: delete modifs from March 27-29 2009 (with option "-mpi":
2801      link *_mpi files from "MODS" dir) to return to a strait-forward behavior.
2802    o move read_write.F to write_utils.F ; new parameter (maxLengthPrt1D)
2803      to reduce length of 1.D array print in STDOUT.
2804    o adjustment.cs-32x32x1: changed to oceanic test with 1 continent
2805      + use 48 tiles (16x8): this will allow to test "blank tiles".
2806    o start to test MPI + multi-threaded (change testreport to skip tests
2807      where number of tiles do not match).
2808    o genmake2: add option "-omp" to turn on Open-MP ;
2809      passed to testreport (if using -mth) ; merge few (*+mth) optfiles.
2810    o pkg/exch2 (+ utils/exch2): ignore blank tiles (instead of removing them)
2811      and keep the original tile numbering. Note: compatible with old
2812      W2_EXCH2_TOPOLOGY.h & w2_e2setup.F topology files.
2813    
2814    checkpoint61l (2009/04/07)
2815    o Overlaps had been forgotten in calculating ijk keys : fixed
2816    o fix cyrus makedepend for gcc 4.4
2817    o experiment fizhi-cs-aqualev20:
2818      switching to new version of S/R GETPWHERE (#define TRY_NEW_GETPWHERE)
2819      and generate new output. Note: new output is much closer to the old
2820      one (v1.8) generated with pgf77 -O2 on Mar 14 2007 than it is from
2821      the previous one (v1.9) generated with pgf77 -O0 on Jun 13 2007.
2822    o pkg/fizhi:
2823     - change to avoid indices going deliberately over array-bounds
2824     - remove unnecessary MPI stuff
2825     - perpetual spring equinox with "#define FIZHI_USE_FIXED_DAY"
2826     - new version of S/R GETPWHERE available with #define TRY_NEW_GETPWHERE:
2827       does not go over array-bounds and therefore returns reliable output.
2828     - in fizhi_driver.F & fizhi_turb.F, fix "get_alarm" calls:
2829       this S/R has 4 output arguments, which are used inside "get_alarm";
2830       when it is called with the same variable "ndum" in place of several
2831       output arguments, this produces weird side effect inside "get_alarm"
2832      (e.g., datein=dates(n) is overwritten by timein=times(n) since both
2833       datein & timein, resp. 2nd and 3rd arg., are pointed to the same "ndum"
2834       address) and produces error.
2835    o tools/gemake2: (March 27-29 2009)
2836      with option "-mpi": link *_mpi files from "MODS" dir (this is what
2837      testreport does).
2838    o lab_sea experiment: change from 2x1 tiles to 2x2 tiles and regenerate output
2839    o pkg/seaice: fix bug in new version of S/R SEAICE_LSR.F:
2840       update lab_sea.lsr & lab_sea.salt_plume results
2841    o pkg/seaice:
2842      Major overhaul of the LSOR solver: change discretization from original
2843      finite differences to finite volume. The old routine is still in the
2844      file seaice_lsr.F and can be turned on with the CPP-flag
2845      SEAICE_OLD_AND_BAD_DISCRETIZATION
2846      Along with this change, the discretization of the strain rates is changed.
2847      The same flag turns on the old discretization in seaice_calc_strainrates.F
2848      All verification experiments with seaice are affected (except for
2849      seaice_exf_offline); global_ocean.cs32x15/input.icedyn recovers the old
2850      results by setting the above flag.
2851      Further changes involve changes in defaults:
2852      - ALLOW_FLOODING is defined and turned on by default
2853      - SEAICEadvSnow = .true. is now the default
2854      - SEAICEadvSalt = .true. is now the default
2855      - SEAICEadvAge  = .true. is now the default
2856      - SEAICE_clipVelocities  = .false. is now the default
2857                                         (as per J. Zhang's recommendation)
2858      - B-grid, and thus not tested: SEAICE_TEST_ICE_STRESS_1/EXPLICIT_SSH_SLOPE
2859        is defined, SEAICE_TEST_ICE_STRESS_1 is renamed into SEAICE_BICE_STRESS
2860      - seaice_growth: replace computation of UG by a simple copy from wspeed
2861    
2862    checkpoint61k (2009/03/18)
2863    o pkg/seaice: a few bug fixes mostly concerning the metric terms:
2864      seaice_lsr: fixed a few metric terms,
2865                  affects lab_sea.lsr, lab_sea.salt_plume, seaice_obcs
2866                  add more debugging diagnostics
2867      seaice_evp: removed superfluous many metric terms of FV discretization
2868                  of stress divergence
2869                  affects lab_sea, lab_sea.hb87
2870      seaice_ocean_stress: removed superfluous many metric terms of FV discretization
2871                  of stress divergence for non-evp solver
2872                  (this part is not tested anywhere)
2873      seaice_calc_strainrates: fixed a bug in no-slip boundary conditions,
2874                  they were effectively only half slip
2875                  affects lab_sea.hb87
2876      updated all relevant verification experiments (except lab_sea//output_adm.txt
2877        which was left over, but fails at level 7 & 6)
2878    
2879    checkpoint61j (2009/03/17)
2880    o pkg/seaice: turn a few hard wired parameters into run time parameters
2881    o pkg/seaice/exf/monitor: turn netcdf coordinate variable T into model
2882      time in seconds as promised by the usints in seaice_monitor and exf_monitor
2883    o pkg/mnc: fix the coordinate variables for multi-tile curvi-linear grids
2884      that are not cubed-sphere grids
2885    o pkg/seaice: fix a bug for the rare case of SEAICE_VECTORIZE_LSR
2886    o pkg/ctrl:
2887      fix bug in ctrl_depth_ini.F (EXCH_XYZ was applied to 2-D field xx_r_low)
2888    o non-hydrostatic (calc_gw.F):
2889      fix viscA4 on CS-grid + fix diagnostics: Wm_Diss & Wm_Advec
2890      update output of exp. global_ocean.cs32x15.viscA4
2891    o remove backward compatibility for thetaMin,phiMin
2892      (replaced by xgOrigin,ygOrigin on Jan 27, 2009)
2893    o pkg/exf: fix a serious bug in exf_set_uv.F: do a rotation of the
2894      interpolated wind field not only for curvilineargrid=.true., but also
2895      for a rotated grid (rotateGrid=.true.)
2896    o pkg/exf: add capability to bypass interpolation for runoff
2897      by setting yet another CPP-flag
2898    o eesupp/src, B-grid exchange:
2899      add simple (6 tiles, non MPI) CS exch + standard interface S/R.
2900    o autodiff
2901      new CPP option ALLOW_TAMC_SINGLEPREC_COMLEV
2902      allows to switch to single-prec common blocks;
2903      corresponding switch occurs in tamc.h, integer isbyte
2904      TAF store directivs "byte" and "kind" seem equivalent;
2905      Most tamc.h have been updated correspondingly.
2906    
2907    checkpoint61i (2009/02/13)
2908    o autodiff:
2909      fix autodiff_sore/_restore indices for obcs
2910      (spotted by I. Hoteit, M. Mazloff)
2911    o pkg/autodiff, pkg/ctrl:
2912      Add flag to reduce all tapelev I/O to single-prec.
2913      In data.ctrl set
2914        doSinglePrecTapelev = .TRUE.
2915    o model/src/ini_curvilinear_grid.F, new grid-file format without EXCH2:
2916      check in hack for SX8 compiler (for dxV, dyU); remove it afterwards.
2917    o pkg/shelfice: fix bug with SHELFICEconserve flag, prepare for
2918      real fresh water flux (not yet)
2919    o pkg/mdsio & rw:
2920     - add argument & option to S/R MDS_WRITEVEC_LOC (avoid Open/Close & write-meta)
2921     - add simple interface S/R to MDS_WRITEVEC_LOC in pkg/rw: WRITE_GLVEC_RX.
2922    o pkg/flt:
2923     - replace FLT_INIT by 3-steps standard initialization S/R: readparms,
2924       init_fixed & ini_varia.
2925     - clean-up & simplify linear interpolation S/R:
2926       move flt_bilinear.F -> flt_interp_linear.F ; add arg. myThid.
2927     - fix some indices (mainly vertical index) ; add IMPLICIT NONE.
2928     - more efficient I/O, using new options of MDS_WRITEVEC_LOC S/R.
2929     - add vert. coordinate & horiz. indices to output files.
2930     - change vertical position in initial condition, from index to depth [m].
2931     - store horizontal (decimal) indices i,j in common block (instead of coord. x,y)
2932       (easier to get to a curvilinear grid) ; delX,delY no longer used.
2933    o pkg/ggl90: a few modifications:
2934     - fix bottom boundary condition, and interpolation of KappaE
2935       near top and bottom
2936     - use same set of viscosity/diffusivity for TKE/momnetum/tracer
2937     - add smoothing option as in Blanke and Delecluse (1993) (--> ALLOW_GGL90_SMOOTH)
2938     - add a few options for mixing-length upper limit (--> mxlMaxFlag)  
2939    o rename thetaMin,phiMin -> xgOrigin,ygOrigin
2940      (maintain temporary backward compatibility, until next checkpoint)
2941    
2942    checkpoint61h (2009/01/27)
2943    o pkg/diagnostics with "periodic averaging diagnostics":
2944      fix S/R DIAGNOSTICS_COUNT ; hack diagnostics_out.F to get NetCDF output.
2945    o pkg/my82: add missing "_d 0" ; update output of exp. vermix.my82
2946    o pkg/obcs: fix loop ranges for balancing code
2947    o pkg/flt:
2948     - improve criteria for finding which tile owns a float.
2949     - fix FLT_EXCH for case without MPI ; apply cyclic BC + fix also the MPI case.
2950    o Add well-mixed CO2 box in aim_v23 (which includes changes in pkg
2951      aim_compon_interf, ocn_compon_interf, gchem, and dic to get coupling
2952      with ocean biogeo)
2953    o pkg/flt:
2954     - do some cleaning and fix the restart ;
2955     - add output.txt in flt_example/results to get this pkg tested.
2956    o genmake2: add an EXTENDED_SRC option and flag.
2957       for now, cannot be turned on on command line (only through genmake_local)
2958    o pkg/mdsio: read/write vector:
2959     - singleCpuIO: fix RL/RS in MDSWRITEVECTOR by calling new S/R MDS_BUFFERtoRL/RS
2960     - singleCpuIO=F: fix arrType & filePrec & _BYTESWAPIO in both MDSREADVECTOR
2961       & MDSWRITEVECTOR by calling new S/R MDS_RD/WR_VEC_RL/RS.
2962     - affects gradient of test-exp "bottom_ctrl_5x5" (not due to _BYTESWAPIO)
2963      (drop to 4 digits matching for grad). But this test does not look very
2964      reliable (was already failling on eddy, fc5, at 6.digits). Update output.
2965    
2966    checkpoint61g (2008/12/29)
2967    o pkg/flt:
2968      - move FLT_CPPOPTIONS.h to FLT_OPTIONS.h (standard name)
2969       + make OPTIONS file more standard.
2970      - rename S/R MDSREADVECTOR_FLT to FLT_MDSREADVECTOR (to mach src file name)
2971      - fix _BYTESWAPIO CPP-Flag
2972      - standard reading of file-parameter "data.flt"
2973      - fix argument list of S/R FLT_RESTART
2974      still need to fix _BYTESWAPIO in pkg/mdsio/mdsio_writevector.F
2975    o pkg/obcs: fix a CPP-flag, bug reported by Jeff Blundell
2976    o gather_2d.F/scatter_2d.F: suppress vectorisation on NEC SX in respond to
2977      a still unfixed compiler/optimization bug
2978    
2979    checkpoint61f (2008/11/21)
2980    o pkg/seaice, LSR solver: fix bug in GLOBAL_MAX calls ;
2981      update results of global_ocean.cs32x15.icedyn test.
2982    o move getcon.F from model/src to pkg/fizhi.
2983    o pkg/exf: add parameter for extrapolation of temp up to the surface
2984       and option to prevent negative evap (in bulk_largeyeager04 only).
2985    o Prather Advection scheme: fix tracer conservation for divergent flow
2986      (e.g., when using NonLin Free-Surface).
2987    o kpp: retire KPPmld diagnostics --> use MXLDEPTH instead
2988    o gmredi (Visbeck-variable-K):
2989     - add more parameters to Visbeck-variable-K.
2990     - use a 5 points average for dSigmaR in Visbeck-K calculation
2991       (more "homogenous": same stencil and same weights as in dSigmaH)
2992     - update output of ideal_2D_oce experiment.
2993    o fix CPP-flag REAL4_IS_SLOW, when _RS expands into real*4
2994      (#undef REAL4_IS_SLOW)
2995     - pkg/mnc/mnc_cw_cvars.F: write _RS-grid variable as netcdf-real*4
2996       coordinate variable
2997     - pkg/monitor/monitor.F: call mon_printstats_rs for _RS variables
2998       (surface forcing fields), removes some of the functionality
2999     - model/src/write_grid.F: write _RS variables as RS-netcdf variables
3000     - model/src/diags_oceanic_surf_flux.F: fix a few diagnostics, but
3001       probably not all: copy _RS surface flux fields to RL field before
3002       calling DIAGNOSTICS_FILL
3003     - model/inc/CPP_EEMACROS.h: make the _EXCH_*_RS macros expand into
3004       real*4 (CALL EXCH_*_RS) versions.
3005     - tested in 2 experiments: inverted_barometer & solid-body.cs-32x32x1
3006       (generate new output).
3007    
3008    checkpoint61e (2008/10/23)
3009    o gmredi (Visbeck-variable-K):
3010      - fix the "OLD_VISBECK_CALC" option + move the #undef to GMREDI_OPTIONS.h
3011      - change computation of Visbeck-K where Slope > Smax :        
3012        now: N*min(Slope,Smax) (similar to OLD_VISBECK_CALC with gkw91 taperFct)
3013        previously was: M*sqrt(min(Slope,Smax)) ; update ideal_2D_oce output.
3014    o bottom-drag in P-coord.: change units of bottomDragLinear & bottomDragQuadratic
3015      to be the same as with Z-coord. (i.e., m/s & no-units respectively).
3016    o calc_viscosity: fix index range (was wrong for CD-Scheme & explicit Visc)
3017    o pkg gmredi, linear & fm07 tapering: put an upper limit on Slope^2 so that Kwz
3018      does not become too large (to avoid precision problems in implicit-diffusion
3019      solver); update ideal_2D_oce output.
3020    o pkg ggl90:
3021      - in ggl90_cal.F: compute only one set of visc/diff, used to
3022        step forward TKE/T/S/momentum
3023      - default value of GGL90viscMax/GGL90diffMax larger and equal (to
3024        have Prandlt =1)
3025    o gmredi (fm07):
3026      - add lower limit on Transition layer thickness + lower limit on 1/lambda
3027      - allow to set few more params from data.gmredi
3028    o pkg ggl90:
3029          - add missing sqrt(2) factor in computation of mixing length
3030            scale in ggl90_calc.F
3031            (see Eq. (2.35) in Blanke and Delecluse, JPO, 1993)
3032    
3033    checkpoint61d (2008/09/25)
3034    o adjoint modifs
3035      - adapt to new field rhoInSitu
3036      - allow to revert from StoreDynVars2D, StoreDynVars3D
3037        to individual fields
3038        (switches AUTODIFF_USE_OLDSTORE_2D, AUTODIFF_USE_OLDSTORE_3D)
3039    o store 3-D (in-situ) density in commom block (DYNVARS.h)
3040     - save 1 rho computation.
3041     - no longer modify T & S inland when using down_slope pkg.
3042    o gad_som : allow to switch to SOM advection for T & S without corresponding
3043      pickup files (using new S/R: MDS_CHECK4FILE).
3044    o keep removing _BEGIN/_END_MASTER between MDSIO S/R call
3045      (for useSingleCpuIO to work in multi-threaded)
3046    o pkg/shelfice:
3047     - disentangle parameters: retire shelfIceFile in data/PARM05 and substitute
3048       with SHELFICEtopoFile in data.shelfice
3049     - move code for reading ice shelf topography and modifying hFacC into separate
3050       subroutines of the shelfice package
3051     - separate initialisation of "fixed" and "variable" variables
3052     - kTopC is not (yet) replaced by kSurfC, although this is possible
3053    o fix broken diagnostic SIatmFW and changed the units from m/s to kg/m^2/s
3054    o add initialisation of deepFac if using Pcoords (new S/R set_grid_factors)
3055      and rename:
3056      ini_phiref.F          --> set_ref_state.F  (+ set anelastic factors)
3057      ini_reference_state.F --> load_ref_files.F (- set anelastic factors)
3058    o change FIND_RHO_SCALAR : return rho (instead of rho - rhoConst)
3059    
3060    checkpoint61c (2008/08/30)
3061    o add option ALLOW_ADDFLUID and run-time selector "selectAddFluid"
3062      to add mass source/sink of fluid in the interior (3-D generalisation
3063      of oceanic real-fresh water flux).
3064    o pkg/monitor: fix recip_dr argument in mon_advcflw2 call (-> advcfl_W_hf_max)
3065    o vermix test experiment: switch from LINEAR EOS to MDJWF (not tested before)
3066    o new pkg: down_slope
3067      density-driven downsloping flow parameterisation (Tellus, 1999, 412-430).
3068      - presently, modify T & S inland (dwnslp_calc_rho.F).
3069        can be avoided if rho was stored in common bloc and used in calc_phi_hyd.
3070      - implementation for ocean in P-coords not tested.
3071      - add secondary test to global_ocean.90x40x15 (input.dwnslp) to check this pkg.
3072    o move kSurfC,kSurfW & kSurfS from SURFACE.h to GRID.h (next to kLowC)
3073      (to facilitate conversion of oceanic pkg to p-coordinate).
3074    o change FIND_RHO to FIND_RHO_2D :
3075      pass arguments tFld & sFld as local (tile) 2D-arrays ; +fix EOS_CHECK.
3076    o new pkg: cheapaml
3077    
3078    checkpoint61b (2008/08/05)
3079    o exch2:
3080      change index bounds in rx2_cube exchanges (new S/R: EXCH2_GET_UV_BOUNDS)
3081      - no longer depend on the order sequence (N,S,E,W).
3082      - 3rd exchange no longer needed (tested with 24 tiles).
3083      - same modif to hand-written adjoint S/R (global_ocean.cs32x15: zero diff)
3084      - exch_UV_A-grid readily available (but not yet tested).
3085      comment out 3rd exch call and remove copy of V to U at SE & NE face-corners
3086      (both are no longer needed) in exch_uv: no effect in forward run; but
3087       get truncation error differences with adjoint exch.
3088    o exch2:
3089     - change index-bounds storage (moved from target to local tile,
3090       more intuitive this way) ; rename/remove some variables.
3091     - change utils/exch2/matlab-topology-generator & code_mods accordingly.
3092    
3093    checkpoint61a (2008/07/29)
3094    o exch2/matlab-topology-generator:
3095      fix bug in index bounds for N-S internal exchange (hard to tell if this
3096      had any effect on the solution).
3097    o pkg/mnc: small fix in mnc_handle_err: make sure that length of msgbuf
3098      is exceeded
3099    o testreport: modify syntax of awk, so that it works also with
3100      awk, and not only with nawk and gawk
3101    
3102    checkpoint61 (2008/06/24)
3103    o autodiff
3104      Change default for TAF usage by removing argument '-nonew_arg'
3105      This changes TAF subroutine argument list (ordering of active var.)
3106      Omission of this flag leads to incompatibility w.r.t. TAMC
3107      To restore TAMC-compatibility, need following modifs:
3108      * use adoptfile tools/adjoint_options/adjoint_tamc_compatibility
3109      * use CPP option #define AUTODIFF_TAMC_COMPATIBILITY
3110      Tested TAF version is 1.9.22
3111      N.B.: exch2 hand-written adjoint code currently not TAMC compatible
3112    
3113    checkpoint60 (2008/06/19)
3114    --->>> This is the last checkpoint for which generating the adjoint
3115    --->>> is done via the TAMC-compatibility TAF-flag "-nonewarg"
3116    --->>> by default.
3117    --->>> Future checkpoints will ommit this flag by default.
3118    o pkg/generic_advdiff, os7mp: simplify and avoid division by zero.
3119    o pkg/grdchk: Add gradient check to etan0 perturbations.
3120    o pkg/exf: read ice area from file (#ifdef ALLOW_ICE_AREAMASK).
3121    o pkg/autodiff: more flexibility in zeroadj.
3122      model/src: modifying do_oceanic_phys.F accordingly.
3123    o pkg/ctrl: Bounds for (kapgm,kapredi,eddypsi) parameter estimation.
3124    o model/src and pkg/gmredi: GMREDI_WITH_STABLE_ADJOINT CPP option
3125      special setup of gmredi for which the adjoint is stable
3126      enough for parameter optimization.
3127    o bridging the gap between eddy stress and GM.
3128      -> eddyTau is replaced with eddyPsi (eddyTau = f x rho0 x eddyPsi)
3129          along with a change in CPP option (now ALLOW_EDDYPSI).
3130      -> when using GM w/ GM_AdvForm:
3131          The total eddy streamfunction (Psi = eddyPsi + K x Slope)
3132          is applied either in the tracer Eq. or in momentum Eq.
3133          depending on data.gmredi (intro. GM_InMomAsStress).
3134      -> ALLOW_EDDYPSI_CONTROL for estimation purpose.
3135      The key modifications are in model/src/taueddy_external_forcing.F
3136      pkg/gmredi/gmredi_calc_*F pkg/gmredi/gmredi_*transport.F
3137    
3138    checkpoint59r (2008/05/29)
3139    o new S/R (pkg/mdsio/mdsio_facef_read.F) reading of sNx+1 x sNy+1 array
3140      from per-face file (take S/R READSYMTILE_RS out of ini_curvilinear_grid.F);
3141      fix option to read coriolis(@ cell-corner) from files with CS-grid.
3142    o pkg/mnc: add some attributes to standard 1D-coordinate variables
3143    o pkg/diagnostics: enforce missing_value attribute for scalar variables at
3144      mass points, when using mnc for output
3145      - add runtime parameter (missing_value, missing_value_int) to override
3146        default (which is the value of getcon('UNDEF'))
3147    o pkg/mnc: prepare mnc for the actual use of missing values with the
3148      diagnostics package: small fix in mnc_cw_readwrite.template and more
3149      initialisation of never used fields
3150      - replace mnc_common.h and mnc_id_header.h with corresponding upper case
3151      versions
3152    o pkg/thsice/thsice_ini_vars.F added default initial values so that
3153      thermodynamics sea ice solver does not blow up when some initial fields
3154      are missing.
3155    o move from external_forcing_surf.F to ini_forcing.F
3156      the p-coord. hack consisting in using pLoad to set phi0surf ;
3157      update output of tutorial_global_oce_in_p (affected @ truncation level).
3158    o Freshen up a bit hs94.1x64x5, notably:
3159      remove rotationPeriod and tRef=5*0. (adjoint only), and add
3160      exactConserv=.TRUE.
3161    o pkg/generic_advdiff:
3162      change option GAD_ALLOW_SOM_ADVECT to GAD_ALLOW_TS_SOM_ADV which only
3163      applies to files where Temperature & Salinity 2nd Order moments are used.
3164    o pkg/ptracers: add second-order moment advection schemes (80 and 81);
3165      this uses a dynamically allocated internal state data structure
3166      (#define PTRACERS_ALLOW_DYN_STATE in PTRACERS_OPTIONS.h)
3167      and requires a fortran 90 compiler
3168    
3169    checkpoint59q (2008/05/06)
3170    o pkg/mom_vecinv: Add energy & enstrophy conserving scheme (selectVortScheme=3)
3171       (from Sadourny, described by Burridge & Haseler, ECMWF Rep.4, 1977)
3172    o Refresh tutorial_global_oce_biogeo, notably:
3173      - change bathymetry (put back seamounts in ACC, use hFacs)
3174      - change EOS (POLY3 --> JMD95Z)
3175      - use Bryan-Lewis vertical diffusivity
3176      - use multidimensional advection
3177      - remove old virtual virtual in dic pkg, now done through ptracer pkg
3178      - change a couple of parameters in dic pkg
3179    o pkg/ctrl: change formula in adctrl_bound.F and add a parameter to ctrl_map_ini_gen.F
3180    o pkg/obcs: change default to OBCSfixTopo = .true.,
3181      - set OBCSfixTopo=.false. in exp4/input/data.obcs to reproduce old result
3182      - replace "debugMode" with "debugLevel .GE. debLevB"
3183    o implementation of TAF directives for gchem,cfc,dic
3184    o remove "exp5" (replaced by tutorial_deep_convection).
3185    o pkg/obcs: add code to fix topography gradients normal to open boundaries;
3186      this requires computing the index fields OB_Jn/Js/Ie/Iw in obcs_readparms;
3187      the code can be turned on by setting OBCSfixTopo = .true. in data.obcs
3188      --> changes results in exp4, seaice_obcs
3189    o tutorial_deep_convection :
3190      update the set-up and increase resolution and domain size ; start
3191      from pseudo initial conditions = output at t=120mn in order to see
3192      something happening when running testreport.
3193    o pkg/seaice: add os7mp as an advection scheme
3194                  add check for advection schemes
3195                  add a flag for restoring T and S underneath sea ice
3196    o pkg/my82: add netcdf-support and diagnostics
3197    o thsice pkg:
3198      - Now hsMax limits snow height by turning it into ice following
3199        flooding scheme (and now conserving energy)
3200      - Slight rewriting of the formula in thsice_calc_thick.F
3201      - Parameter rhowi eliminated to be replaced by floodFac = (rhosw-rhoi)/rhos
3202      --> changes results of global_ocean.cs32x15.icedyn and global_ocean.cs32x15.thsice
3203    
3204    checkpoint59p (2008/04/10)
3205    o gchem / dic / cfc :
3206      - add useDIC, useCFC , read from "data.gchem" (& hold in GCHEM.h);
3207      - add new parameter files: "data.dic" & "data.cfc" ;
3208      - various re-arrangement in initialisation & header file ;
3209      - fix tutorial_global_oce_biogeo for multi-threaded test.
3210    o pkg/dic: test for "pickup_dic" file when restarting ;
3211      if no pickup-file, can restart with a re-initialised pH (same as it did
3212      before) providing pickupStrictlyMatch is set to False.
3213    o change argument list of S/R PTRACERS_WRITE_PICKUP & MYPACKAGE_WRITE_PICKUP
3214      + fix call to S/R GGL90_WRITE_PICKUP & DIC_WRITE_PICKUP
3215    o add a "warning" (to Error msg file) when an Active Tracer is not using AB-2
3216      and staggerTimeStep is off (needed for stability of Internal-wave dynamics).
3217    o move out of PARAMS.h & data the last pieces of old-ptracer code: tauTr1ClimRelax,
3218     & lambdaTr1ClimRelax ; put those 2 params in PTRACERS_PARAMS.h & data.ptracers
3219       (note: not clear to me what lambdaTr1ClimRelax is still used for ...)
3220    o pkg/mom_vecinv: - new parameter "selectVortScheme" to select which
3221       scheme to use for vorticty-term ;
3222     - compute upwindVorticity=T case within mom_vi_u/v_coriolis_c4.F
3223       (with default selectVortScheme, return to original discretisation)
3224     - remove weird combination (e.g.: upwindVorticity & highOrderVorticity)
3225    o pkg/seaice: add a line to the summary to indicate grid type (B/C)
3226    o in mom_calc_visc, fix average value of viscAh_W & viscA4_W next to the
3227      bottom ; only used with variable horizontal viscosity and non-hydrostatic.
3228      also fix diagnostics VISCAHW & VISCA4W.
3229    
3230    checkpoint59o (2008/03/07)
3231    o dome/code/obcs_calc.F: avoid division by zero (detected using gfortran).
3232    o change the loop ordering in most gad_*_adv_x.F to improve vectorization:
3233      move a few statemens out the main loop into separate loops
3234    o pkg/shelfice:
3235      - sort out freshwater flux; convert freshwater fluxes to mass fluxes
3236        (kg/m^2/s), does not break tests, because in verification/isomip,
3237        rhoConstFresh=rhoConst (by accident)
3238      - rearrange computation of tLoc, sLoc, pLoc to make code more efficient
3239      - move S/R find_rho_scalar, pkg/ecco/sw_ptmp.F, pkg/ecco/sw_adtg.F into
3240        new file model/src/seawater.F, so that they are available for all pkgs.
3241      - convert potential temperature into in-situ temperature. This changes the
3242        isomip tests => update tests
3243    o add a flag writePickupAtEnd (default=true) to be able to suppress
3244      writing a pickup at the last timestep
3245    o tools/mpack-1.6 :
3246      - disable automake (not working) and autoconf (not needed).
3247      - update to version 1.6.4 which fix MD5 code on some 64 bits platforms
3248        also cleaner with much less compilation warnings.
3249    o pkg/profiles:
3250      rename profiles_interp_mean_genericgrid as profiles_interp_mean_gg
3251      (for "less than 32 characters name" compiler requirement)
3252    o pkg/obcs and pkg/exf: added capability to specify seaice open boundary
3253      conditions that have a different sampling frequency than S/T/U/V obcs
3254    o pkg/diagnostics (stats-diags):
3255      - fix global Min/Max in case 1 processor get only empty tiles
3256    o genmake2: replace (4 times)
3257         make genmake_tc_1.o >> genmake_warnings 2>&1
3258      with
3259         COMM="$CC $CFLAGS -c genmake_tc_1.c"
3260         echo $COMM >> genmake_warnings
3261         $COMM >> genmake_warnings 2>&1
3262      to make genmake2 always see the value of CC as specified in the optfile.
3263    o generic_advdiff: - prather advection scheme (SOM) coded for CS-grid.
3264      - add diagnostics for 1srt & 2nd Order moments and sub-grid variance.
3265      - modify verification advect_cs test to test SOM-advection on CS-grid.
3266    o pkg/ctrl:
3267      - Rewrite of ctrl_map_ini_ecco.F,
3268        introducing a generic routine (ctrl_map_ini_gen.F).
3269      - Modification of ctrl_bound/adctrl_bound handling control vector bounds.
3270    
3271    checkpoint59n (2008/02/09)
3272    o pkg/diagnostics: for large number of diagnostics, store diagnostic mate
3273      number in dedicate array "hdiag":
3274      - new version of S/R DIAGNOSTICS_ADD2LIST : DIAGNOSTICS_ADDTOLIST
3275        with 1 more argument (mate number); modify old version DIAGNOSTICS_ADD2LIST.
3276      - many small changes (integer format) for large number of diagnostics
3277      - start to use DIAGNOSTICS_ADDTOLIST (necessary for diagnostics with
3278        a counter mate) in pkg diagnostics, ptracers, thsice & aim_v23.
3279    o add parameter rotateGrid and Euler angles EulerPhi/Theta/Psi. For
3280      usingSphericalGrid, this allows to define the rotated grid coordinates
3281      via phiMin/thetaMin/dxSpacing/dySpacing, etc., but then re-compute the
3282      geographical coordinates according to the inverse of the rotation defined
3283      by the Euler angles, so that Coriolis parameter and online-interpolation by
3284      exf works with the geographical coordinates on XC/YC/XG/YG.
3285      Naturally, this feature does not work with all packages, so some
3286      combinations are prohibited in config_summary (flt, flt_zonal, ecco,
3287      profiles), because there the coordinates are assumed to be regular
3288      spherical grid coordinates.
3289    o pkg/gmredi,ctrl,ecco,autodiff,grdchk and model/src,inc:
3290      - introduce isopycnal diffusion coefficient control.
3291    o tools/adjoint_options:
3292      - additional control vector components.
3293    o pkg/mnc: have mnc create marginally meaning full coordinate variables
3294      (that is the grid indices) if usingCurvilinearGrid and NOT EXCH2
3295    o pkg/mypackage:
3296      - add example of read/write pickup for state-var ;
3297      - add entry points to the main code for state-vars diags & write-pickup.
3298    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
3299      transitions for useExfYearlyFields
3300      - add new subroutine that determines the file to read from for
3301        use*YearlyFields = .TRUE. and .FALSE.
3302      - add a verification experiment to global_with_exf that tests
3303        useExfYearlyFields with USE_EXF_INTERPOLATION defined
3304    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
3305      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
3306      subroutines (which could be generated from a template, because they are
3307      almost identical), for now they are included in obcs_prescribe_read.F for
3308      simplicity
3309    o pkg/exf:
3310      - add a little more diagnostic to exf_interp_read (in analogy to
3311        mds_read_field, can be turned off with debugLevel < debugLevA=1)
3312      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
3313        ugly but fast by unrolling short inner loops, inserting a unroll=8
3314        directive in routine lagran, and splitting a loop and making do while the
3315        outermost loop (the latter requires the intoduction of index arrays)
3316    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
3317    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
3318      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
3319    o verification/seaice_obcs: updated for restart test and latest options
3320    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
3321      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
3322      for now this is only available for the C-grid code and also within
3323      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
3324    
3325    checkpoint59m (2008/01/14)
3326    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
3327      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
3328    o gad_som : fix flux output (& diagnostics) to have same units as other  
3329      advection scheme fluxes (was previously multiplied by deltaT).  
3330    o added verification/seaice_obcs both to test seaice open boundaries
3331      and to provide an example matlab scrpt for generating them
3332    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
3333    o pkg/salt_plume: clean up salt_plume_frac.F to
3334      remove redundancy in PlumeMethod 1 and 4
3335    o pkg/kpp: added saltplume diagnostics
3336    o pkg/obcs and pkg/seaice:
3337      - do not set uice and vice to zero when OB*icefile are unspecified
3338      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
3339      - moved seaice tracer obcs after call to seaice_growth
3340    o pkg/salt_plume: added various options for salt plume depth
3341      criterion and for vertical distribution of the salt
3342    
3343    checkpoint59l (2007/12/18)
3344    o pkg/ptracers: new version of ptracers pickup:
3345      read meta file and write only fields which are needed to restart.
3346      ( same logic as main pickup file ; also using pickupStrictlyMatch )
3347    o pkg/seaice:
3348      - add timescale for melting due to warm mixed layer as a means of
3349        setting SEAICE_availHeatFrac more conveniently
3350      - add a CPP-flag/runtime parameter check for flooding algorithm
3351      - reformulated availHeat in seaice_growth.F to be independent of AREA
3352    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
3353      unit changes
3354    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
3355    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
3356      SX vector computer.
3357    o pkg/seaice:
3358      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
3359        seaice forcing fields can now be read only through pkg/exf
3360      - removed some unused halos
3361    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
3362    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
3363      or U/VICE from U/VWIND before computing U/VSTRESS
3364    
3365    checkpoint59k (2007/11/30)
3366    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
3367      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
3368    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
3369      all experiments pass when compile with un-initialised var. checking option.
3370    o added pkg/salt_plume
3371    o script to test restart (for now, in MITgcm_contrib/jmc_script)
3372    o pkg/seaice: new read/write pickup version.
3373      read meta file and write only fields which are needed to restart.
3374      ( same logic as main pickup file ; also using pickupStrictlyMatch )
3375    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
3376    o lab_sea.hb87: modify the domain & update output.hb87.txt :
3377      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
3378      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
3379      process. Fixed here by closing the domain at the Northern boundary.
3380    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
3381    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
3382      a set of consecutive levels in/from a 3-D array.
3383    o pkg/ptracers:
3384      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
3385      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
3386    
3387    checkpoint59j (2007/11/09)
3388    o in pkgs: dic, obcs, offline, rbcs:
3389      standard way to compute coeff. for time interpolation between 2 time reccords
3390      which retains full precision (& make results less dependent on compiler).
3391      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
3392    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
3393      packages instead of reading ice cover and wind speed separately
3394    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
3395     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
3396      to allow to compile customized code before the update)
3397    o cleaning-up:
3398      - fix CPP instruction syntax in pkg/obcs
3399      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
3400        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
3401      - fix some threads issue in IO parts.
3402    o pkg/dic:
3403      - add tons of "_d 0" (--> much better testreports !)
3404       and then update outputs of tutorial_global_oce_biogeo
3405    o pkg/mom_fluxform:
3406      add a special version of momentum advection intended to conserve momentum
3407      next to a bathymetry step or a coastline edge. (default = off = #undef)
3408    o new read/write pickup version:
3409      - for now, only implemented for main (mdsio) pickup file.
3410      - write out only what is needed to restart; merge pickup_nh , pickup_ph
3411        and main pickup together.
3412      - read meta file; read only what is needed to restart; stop if a field
3413        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
3414        if it make sense (even if the restart is not perfect).
3415      - if no meta file, assume that pickup to read corresponds exactly to
3416        a pickup that would currently be written.
3417      - read pickup written in the old format (until checkpoint59i) if it
3418        recognizes an old meta file (no field-list).
3419      - add a meta file in exp. which starts from a pickup: 2 cases:
3420        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
3421         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
3422        b) a meta file describing the content of the associated pickup file
3423         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
3424    o pkg/mdsio & pkg/rw:
3425      - new routine to read a meta file ; new set of routine to read
3426        Multiple-fields file (with meta file).
3427    o added open boundary conditions capability for seaice
3428        HSNOW, HSALT, UICE, and VICE
3429    
3430    checkpoint59i (2007/10/21)
3431    o adjoint:
3432      * fix multiDimAdvection adjoint
3433        (partial recomputation problem by TAF for fVerT(:,:,kDown)
3434        and comlev1 size definition (maxpass vs. max. number of tracers)
3435      * verification/global_ocean.90x45x15 adjoint now tests
3436        NLFS and multiDimAdvection using DST3 (=30)
3437      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
3438    o pkg/kpp: add "_d 0" to real constant (if missing);
3439      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
3440      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
3441    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
3442      for internal parameters related to restart process (formerly from PARAMS.h)
3443      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
3444    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
3445      as argument. (only atm2d & obcs write_pickup have not yet been updated)
3446    o pkg/monitor:
3447      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
3448      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
3449      - account for deep Atmosphere factor and density factor (anelastic)
3450    o added open boundary conditions capability for seaice HEFF and AREA
3451    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
3452      thermodynamics
3453      - requires a little reorganization, which affects the testreport results
3454        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
3455        so that now the conservative form is tested
3456      - add a few comments
3457    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
3458    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
3459    o add new diagnostics to seaice: advective, diffusive fluxes (only for
3460      multidim-advection, for scheme 2 they are not filled) and transports,
3461      thermodynamic growth rates
3462    o change units of EmPmR (inside the code, + within coupling interface)
3463      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
3464      Affects results @ truncation level (cg2d match) and update output of
3465       experiments: lab_sea(6), global_ocean.90x40x15(10),
3466      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
3467      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
3468      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
3469      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
3470    
3471    checkpoint59h (2007/09/29)
3472    o pkg/exf:
3473      - improve vectorization by moving if-statement out of loops in
3474        exf_mapfields, exf_radiation
3475      - exf_bulkformulae.F: introduce 2D fields and vectorize code
3476    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
3477    o testreport:
3478      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
3479        monitor & update offline_exf_seaice exp. output.
3480      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
3481    o pkg/seaice:
3482      - bug fix in the evp solver: boundary conditions were affected be
3483        masking of zMax/zMin (changes results)
3484      - minor bug fix in boundary conditions in seaice_calc_strainrates
3485        (changes results for no_slip)
3486      - seaice_lsr.F: make interpolation of eta dependent on boundaries
3487      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
3488      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
3489        stress formulation and no-slip boundary conditions
3490    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
3491      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
3492    o pkg/seaice: a first HSALT time stepping equation has been checked in
3493    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
3494      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
3495      without requiring DO-IF statements
3496    o pkg/thsice:
3497      use continuous power-law function for partition of energy between lateral
3498      melting/freezing and thinning/thickening ; old code using step function
3499      still available with #undef THSICE_FRACEN_POWERLAW
3500      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
3501    o testreport: change AD testing : check against results/output_adm.txt
3502      using same scripts as for forward test.
3503    
3504    checkpoint59g (2007/09/17)
3505    o adjoint testing: in preparation for changing testreport:
3506      - output format: cost and grad written on separated lines
3507      - ad output results in directory "results" (instead of "results_ad")
3508    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
3509    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
3510    o pkg/ecco: allow user defined cost function contributions
3511    o testreport:
3512      Allow to choose (per experiment) the list of tested output variables
3513       and the main variable (used to issue a pass/FAIL ) ;
3514      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
3515      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
3516      Also modify printing of summary:
3517       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
3518       b) echo the list of tested variables in the individual summary.txt of
3519          each experiment.
3520    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
3521      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
3522      (but still depend on the tile decompostion of the domain).
3523    o pkg/seaice: change a discretization detail to make the B-grid code
3524      "more symmetric". This change is likely to remove all "ridges/leads" that
3525      where quasi-aligned with the grid in B-grid solutions. It may also be
3526      the solution to the stress coupling issues with the B-grid.
3527    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
3528      remove .cvsignore from input dir. (since testreport no longer run here).
3529    o pkg/thsice:
3530     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
3531     - fix reshaping of sea-ice just after advection:
3532       melt all the ice only if ice-volume is too small.
3533     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
3534       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
3535     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
3536    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
3537      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
3538    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
3539      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
3540      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
3541      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
3542      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
3543      -> update output.txt
3544    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
3545     this affects truncation error: -> update output.txt of exp:
3546      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
3547      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
3548    
3549    checkpoint59f (2007/08/21)
3550    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
3551    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
3552      a bounded range (in forward mode)
3553    o pkg/ecco, ctrl, autodiff and mom_common:
3554     internal parameter controls, completements of implementations
3555    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
3556    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
3557      (not seem any difference in testing results).
3558    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
3559       at face corners.
3560    o pkg/generic_advdiff:
3561     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
3562      loop range indices for computing vertical advection tendency
3563      and do the calculation in the interior only (no overlap) ;
3564      for now, only implemented for SOM advection (to save CPU time).
3565     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
3566    o exch2 adjoint
3567      First set of changes:
3568      - add exch2 hand-written adjoint templates
3569      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
3570        This will require cleanup in pkg/autodiff/*.F
3571        (changed routines currently kept separate in verif. code/)
3572      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
3573        that used to hide exch2 or cubed-sphere specific code
3574        (commented via 'cph-exch2')
3575    o pkg/seaice
3576      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
3577    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
3578       output of global_ocean.cs32x15.thsice .
3579    
3580    checkpoint59e (2007/07/26)
3581    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
3582      for B-grid vector (not yet tested) and C-grid vector (<- only used
3583      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
3584    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
3585      (#ifdef ALLOW_SALT_PLUME)
3586    o gather_2d/scatter_2d: removed halo regions
3587    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
3588      scheme and the corresponding test case (under front_relax dir). For now,
3589      only available with Skew-flux form and not yet tested in realistic set-up.
3590      adjoint: store directives updated, but gradient checks deteriorated,
3591      so maybe GM/Redi adjoint is now broken.
3592    o seaice adjoint
3593      * add AREA, HEFF, HSNOW as control variable
3594        (should not change lab_sea results)
3595      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
3596    o pkg/seaice:
3597      * added computation of saltFlux in seaice_growth;
3598        For time being, sea ice salinity is assumed constant
3599        contribution of snow flooding to freshening of sea ice is neglected.
3600        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
3601        defaults to 0.0 in order to maintain backward compatibility.
3602        Typical values for SEAICE_salinity are 4 to 10 g/kg.
3603      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
3604      * added SEAICE_availHeatFrac, which specifies fraction of surface level
3605        heat content used to melt or grow ice
3606      * commented out cap of HICE: it helps keep ice thinner
3607      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
3608      * applied OBCS T/S mask to HEFFM sea ice mask
3609    
3610    checkpoint59d (2007/06/21)
3611    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
3612     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
3613     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
3614    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
3615     and change default value of parameter "GM_Small_Number";
3616     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
3617       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
3618       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
3619    o pkg/ecco: cost function when applying pkg/smooth to controls
3620    o pkg/ctrl: add forcingPrecond run time parameter
3621    o pkg/seaice:
3622     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
3623     - fix bug in metric terms of u-equation in LSR solver (implicit part),
3624       changes verification/lab_sea
3625     - rearrange implicit part of u-equation in LSR solver to make it easier to
3626       read, understand, and debug. This causes changes at the truncation level.
3627     - fix (serious) bug in the boundary conditions (sign error in the implicit
3628       part) of the LSR solver. Changes all LSR results.
3629     - fixed problem with HSNOW initialization to avoid thick snow when AREA
3630       is initilized with small values - does not change lab_sea results.
3631     - added HsnowFile initialization capability
3632    o pkg/smooth: addition to model/src and pkg/ctrl so allow
3633     initialization of pkg/smooth and application to control vector
3634    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
3635    o dependencies: pkg/profiles requires pkg/cal
3636    o pkg/profiles:
3637     - added option ALLOW_PROFILES_GENERICGRID
3638         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
3639         that interpolation information (grid points and coefficients) is provided
3640         within the netcdf input files.
3641         -> sample matlab scripts can be found in MITgcm_contrib/gael
3642         that allow you to prepare netcdf input files.
3643     - also modified: cleaner include statements, cleaner error print statements,
3644       cleaner stops when error, and more tests of the netcdf input files consistency.
3645    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
3646    o pkg/seaice:
3647     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
3648       requires a new routine: seaice_diagnostics_fill.F
3649     - make sure that seaice does not move if not forced (pressure replacement
3650       method, Hibler and Ip, 1995), changes results
3651     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
3652     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
3653       It is turned off by default (=-1.), because it changes the results.
3654     - make it possible to read AREA from a file, too.
3655    
3656    checkpoint59c (2007/06/04)
3657    o add S/R and diagnostics for oceanic mixed-layer depth
3658    o move GMRedi call after all vertical mixing schemes (including KPP)
3659    o pkg/thsice:
3660     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
3661      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
3662    o pkg/obcs:
3663     - bug fix for balance code
3664    o pkg/seaice:
3665      - allow values of SEAICE_elasticParm > 1
3666      - add new parameter SEAICE_evpTauRelax as an alternative
3667        to SEAICE_elasticParm
3668      - make lsr boundary conditions free slip (by default), changes result
3669      - add code for no slip boundary conditions for lsr
3670      - set minimum of zeta to zero (and not 4e8) (changes results)
3671      - add a cap on AREA after advecting AREA if seaice_growth is not called
3672    o change calculation of Visbeck K:
3673      - no longer depend on tapering scheme; instead, compute slope (limited
3674        by GM_maxSlope). this is equivalent to what was comuted before with
3675        clipping or linear tappering.
3676      - fix vertical averaging (wrong by 1/2 level)
3677      - leave the old version (but will not be maintained) within
3678        #ifdef OLD_VISBECK_CALC / #endif
3679      - update output of exp. ideal_2D_oce
3680    o change error catch in calc_r_star to improve vectorization
3681    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
3682      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
3683    o adjoint:
3684      Re-organized adjoint checkpointing according to Matt Mazloff
3685      (but with modifs/completions/cleanups)
3686      Storing is now bundled into large arrays to optimized I/O
3687      (and second step in cleanup of the_main_loop)
3688    
3689    checkpoint59b (2007/05/16)
3690    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
3691      - export/import (between ocean & coupler) fields needed for ocean DIC.
3692    o pkg/seaice:
3693      - get rid of three more exchanges seaice_calc_viscosities (required
3694        different loop boundaries in seaice_lsr and seaice_ocean_stress)
3695      - bug fix in seaice_ocean_stress (update of lab_sea required)
3696      - reduce loop boundaries to necessary minimum also in seaice_evp
3697      - go back to the old way of computing deltaC/Z as the adjoint likes that
3698        better
3699    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
3700      passive tracer to an Age Tracer) + update output.txt
3701    o pkg/exf:
3702      - implement A-grid / C-grid selection for wind-stress input files.
3703      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
3704      for now, in exf_bulk_largeyeager04.F only :
3705      - change implementation for case where windspeed + 2. components wind-stress
3706        are read-in. AND use rhoConstFresh to convert evap.
3707    o pkg/seaice:
3708      - use correct EXCH_UV for wind-forcing (on A-grid).
3709      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
3710        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
3711    o pkg/exf:
3712      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
3713      EXF_INTERPOLATION:
3714      - merge global_with_exf/code version of exf_interp_read.F
3715        to the main code ;
3716      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
3717        reading the file ; Important: This options needs to be defined to recover
3718        previous code.
3719        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
3720      - no longer loose real*8 precision along the way when using exf_iprec=64.
3721    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
3722      - change discretisation of evp-solver in order to avoid another exchange
3723        (changes lab_sea) and clean up a little
3724      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
3725        help the adjoint (this also changes the results slightly)
3726      - add a few "_d 0" where they had been missing in seaice_evp.F
3727      - cleaning up: remove unused seaice_calc_rhs.F
3728    o pkg/exf: some cleaning-up:
3729      - change various "constants" into runtime parameters
3730      - cleaned-up Large&Yeager04 routine which should eventually
3731        replace exf_bulkformulae.F (changed names of S/R and CPP)
3732        and merged various ALLOW_ATM_WIND options
3733     only used with thsice pkg (in thsice_get_exf.F):
3734      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
3735        which are used when useStabilityFct_overIce=TRUE (= the default)
3736      - change default values of ice & snow emissivity and scale downward LW
3737        by ice & snow emissivity.
3738    o pkg/thsice:
3739     fix few little problems, in thsice_calc_thickn.F:
3740      - growth vertically (and not laterally) if iceFrac == iceMaskMax
3741      - melt only laterally if hIce < hThinIce (as the comments say)
3742      and in thsice_extend.F:
3743      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
3744      - start to form ice as soon as the minimum ice-volume is reachable.
3745     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
3746      and cpl_aim+ocn
3747    o pkg/kpp
3748     - move computation of surface related input fields to KPP into a new
3749       subroutine kpp_forcing_surf.F
3750     - remove wrong (within bi,bj loops) EXCH calls.
3751     - little cleaning (add argument myThid in last position, cvs header ...)
3752     - for now, fix conservation problem by exchanging KPPviscAz (may not
3753       be the best fix)
3754    o pkg/seaice
3755     - check for inconsistent evp parameter/cpp-flag combination
3756     - remove leftover errIO flat for obsolete name list error handling
3757    o OpenAD
3758     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
3759    
3760    checkpoint59a (2007/05/01)
3761    o pkg/seaice: some parameter clarifications and a little bit of clean up
3762    o pkg/thsice: rename run-time parameters:
3763       himin       -> hIceMin
3764       himin0      -> hThinIce
3765       hihig       -> hThickIce
3766       i0          -> i0swFrac
3767       transCoef   -> bMeltCoef
3768       frac_energy -> fracMelting
3769      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
3770       with default values (for now) that do not change the results.
3771      remove old version of thsice vars advection in pkg/seaice.
3772    o in FFIELDS.h:
3773      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
3774      - make pLoad & sIceLoad always available (but still only used if
3775         ATMOSPHERIC_LOADING is #define).
3776    o pkg/kpp: replaced _KPP_RL with _RL
3777    o bug fixes for vertical diffusivity computations when both KPP and
3778        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
3779        are no longer updating the vertical diffusivity array
3780        (passed as argument) but are (re-) setting those arrays.
3781    o pkg/seaice: fix bug in evp solver, while doing that
3782      - change (improve?) discretization of stress computations for both
3783        cgrid-lsr and evp solver
3784      - add a new routine to compute strain rates
3785      - the above changes lab_sea results
3786      - add no slip conditions for evp solver (off by default), lsr-version
3787        may follow
3788      - fix exchange for shear at Z-points (does not change lab_sea)
3789      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
3790        (to force the user to pick a time step since there is not "safe" way
3791        of choosing it)
3792      - add principal stress diagnostics
3793      - rearrange fields for evp a little to avoid having to call a: too many
3794        exchanges and b: exchanges for stress trensor components which we do
3795        not have.
3796      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
3797        of evp, complete rewrite for lsr case (latter is does not yet work
3798        in all cases)
3799    o pkg/kpp: add code to have mixing in shelf ice caverns
3800      - add myThid to all kpp routines (long overdue)
3801    
3802    checkpoint59 (2007/04/19)
3803    o pkg/exf:
3804      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
3805        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
3806      - move exf header files from lower_case.h to UPPER_CASE.h ;
3807        add missing cvs Header & Name
3808      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
3809      - add namelist param. selectStressGridPosition, exf_monFreq
3810      - retire many _CLIM routines, and remove data.exf_clim
3811        + params moved to data.exf
3812        + climsst, climsss now handled by exf_set_gen, i.e.
3813          climss?period=0 refers to constant field,
3814          climss?period=-12 to monthly forcing
3815      - split up namelists in data.exf
3816    o pkg/seaice:
3817      - remove seaice_exch and seaice_exch_uv
3818      - remove superfluous exchange of theta
3819      - add myThid to seaice_budget_ocean/ice
3820      - add new interface for atmospheric wind forcing (C-grid only)
3821        + new routine
3822        + two new field (taux, tauy for stress over ice)
3823        + removed one global field (DAIRN) for C-grid case only
3824    o pkg/thsise
3825      - 2nd set of modifs for thsice adjoint in conjunction with exf
3826    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
3827    
3828    checkpoint58y_post (2007/04/15)
3829    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
3830      vertical diffusivity, similar to that in MOM4; turned on using
3831      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
3832      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
3833    o Added capability for 3D specification of background vertical diffusion
3834      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
3835      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
3836      "data" file that contains the 3D vertical diffusivity coefficients.
3837    o ice dynamics (pkg/seaice) with thsice thermodynamics:
3838      - add code within pkg thsice to advect & diffuse sea-ice fields
3839      similar to (and will replace) what has been added in  seaice_advdiff.F,
3840      but: - conserving Mass, Heat & Salt.
3841           - better when using non-linear advection scheme (not yet fully tested)
3842           - can also be used in atmospheric set-up (for now, only the diffusion).
3843    
3844    checkpoint58x_post (2007/04/04)
3845    o IO option for global-file compact format:
3846      - add options when generating topology (utils/exch2/matlab-topology-generator)
3847      - add I/O capability (pkg/mdsio).
3848      - adapt utils/matlab/rdmds.m to read this format.
3849      for now long-line format not yet supported by pkg/mdsio (& exch2).
3850    o shelfice: add a few diagnostics
3851    
3852    checkpoint58w_post (2007/03/13)
3853    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
3854      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
3855      (and replace horiVertRatio in NH code).
3856      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
3857                         and tutorial_plume_on_slope (sensitive to truncation)
3858    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
3859      directly to drive seaice model (C-grid only)
3860    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
3861     - reintroduce computation of wind from stress,
3862     - compute tau (in exf_bulkformulae.F) from windstress averaged to
3863       mass points to avoid tau = 0
3864     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
3865    o rdmnc.m: make it work with "global" files created with gluemnc
3866    o rdmnc.m : some improvements in dealing with singleton dimension
3867      (tested on all testreport mnc output files).
3868    o genmake2: disable pkg/profiles if netcdf test fails.
3869    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
3870    o move call to cal_readparms up to make calendar parameters/variable available
3871      to all packages
3872    
3873    checkpoint58v_post (2007/02/08)
3874    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
3875      useDynP_inEos_Zc tested.
3876    o pkg/exf: changes to properly interpolate/mask/scale initial fields
3877    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
3878      and portions thereof.  See read_cs.txt for description and examples.
3879    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
3880      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
3881      following the great-circle arc between those 2 points.
3882    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
3883      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
3884    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
3885     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
3886     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
3887     - still needs work (not working with some options ; efficiency to improve)
3888       and serious testing.
3889     - use this scheme for temperature & salinity in 2 advection test exp.:
3890       advect_xy & advect_xz, respectively.
3891    
3892    checkpoint58u_post (2007/01/12)
3893    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
3894    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
3895    o testreport: add option "-skipdir" to skip some test.
3896    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
3897      momentum calculation.
3898    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
3899    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
3900      remove checkpoint.F and the_correction_step.F (no longer used);
3901      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
3902    o add option (linFSConserveTr) to correct for tracer source/sink due to
3903      Linear Free surface
3904    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
3905    o pkg/thsice: fix reading mnc-pickups
3906    
3907    checkpoint58t_post (2006/12/30)
3908    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
3909    o pkg/mdsio:
3910     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
3911       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
3912       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
3913     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
3914     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
3915       either MDS_READ_FIELD or MDS_WRITE_FIELD )
3916     - new S/R (to replace MDSWRITEMETA), which allows to write more
3917       informations (variable names, time ...) to meta files.
3918     - modify rdmds.m to give back the meta file content.
3919    o pkg/diagnostics: change vertical interpolation to be safer, and more
3920       flexible (define p-levels to interpolate to in data.diagnostics);
3921      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
3922       diagnostic pointer.
3923    o pkg/seaice: more cleaning up of seaice_growth, added many comments
3924    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
3925    o fix multi-category seaice:
3926     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
3927       SEAICE_MULTICATEGORY
3928     - fix short wave heat flux
3929    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
3930       and allow to use EVP solver. Change forward lab_sea: test both EVP
3931       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
3932    o Initial check-in of lab_sea adjoint
3933      (very similar to natl_box_adjoint/code_seaice)
3934      * used C-grid and EVP solver
3935      * used KPP, GM/Redi
3936      * uses inAdExact=.TRUE.
3937      * gradient checks fail for both ADM and TLM
3938        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
3939        f.d. gradients actually seem more problematic than ADM, TLM gradients;
3940        issue is related to forward mismatch between g77 an ifort
3941    o pkg/seaice: overhaul of thermodynamics
3942     - growth.F and groatb.F are replaced by new routine seaice_growth.F
3943     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
3944     - move a few global fields out of SEAICE.h into seaice_growth.F and
3945       make them 2D (FICE/QNETO/ ...)
3946     - remove FO (it is the same as QNETO)
3947     - introduce a few local fields to avoid modifying external fields such
3948       as atemp, etc.
3949    
3950    checkpoint58s_post (2006/12/11)
3951    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
3952      changed exf_set_gen.F so that
3953        genperiod=0 means input file is one time-constant field and
3954        genperiod=-12 means input file contains 12 monthly means
3955    o CG2D: use pre-computed solver main-diagonal (stored in common block);
3956      this affects truncation error ; generate new output file for exp. which
3957      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
3958        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
3959        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
3960        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
3961        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
3962        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
3963    o start implementation of deep-atmosphere and anelastic formulation
3964    o verification: remove 2nd copy of input files and use script "prepare_run"
3965      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
3966    o mom_common/vecinv/fluxform: fix a few initialisation isssues
3967    o profiles: fix for multithreaded case
3968    
3969    o diagnostics: rename few diags:
3970      s/'PRESSURE'/'RCENTER '/g
3971      s/'TICE    '/'oceFreez'/g
3972      s/'TAUX    '/'oceTAUX '/g
3973      s/'TAUY    '/'oceTAUY '/g
3974      s/'SWFLUX  '/'oceQsw  '/g
3975      s/DIFx/DFxE/g
3976      s/DIFy/DFyE/g
3977      and add few ocean-forcing diagnostics:
3978      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
3979    o modifications to pkg/seaice/growth.F and budget.F, which change results of
3980      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
3981      as actual snow thickness.  It now refers everywhere to effective snow
3982      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
3983    
3984    checkpoint58r_post (2006/11/17)
3985    o modifications to pkg/seaice/growth.F, which change results of
3986      lab_sea experiment: fixes pertain to melting snow over open water, to
3987      masking EVAP under sea ice, and to using the correct AREA variable for
3988      computations of EVAP, PRECIP, HSNOW, and GHEFF
3989    o add ability to read bathy, salt, and theta using MNC (off by def)
3990    o add flooding algorithm and advection of HSNOW for pkg/seaice;
3991      both are turned off by default and do no change any results
3992    o seaice advection with pkg/thsice: a step toward the use of non-linear
3993      advection scheme, but #ifdef or commented out for now (requires more EXCH).
3994    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
3995      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
3996      in natl_box (affects results @ truncation level: update output.txt)
3997    o multi-threading and IO:
3998      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
3999      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
4000        (needed to work with SingleCpuIO): tested in all verif. exp.
4001    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
4002      affects the results (but none of the verification test uses this scheme).
4003    o Adding some pkg/diagnostics capability to pkg/seaice
4004      (will certainly be subject to changes)
4005    o ctrl: adding new control variables:
4006      lwflux, lwdown, evap, snowprecip, apressure, runoff
4007    
4008    checkpoint58q_post (2006/10/20)
4009    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
4010      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
4011      high_res_cube configuration by 4% on Columbia.
4012    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
4013      add (in global_with_exf/code) a version of EXF_INTERP_READ without
4014      dynamical allocation (seems to work in multi-threaded).
4015    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
4016      single CPU io) so that TAF does not have to see EESUPPORT.h
4017    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
4018    
4019    checkpoint58p_post (2006/09/08)
4020    o obcs: stop if obcs is used with useCDscheme = .true.
4021    o shelfice:
4022     - fix a sign error so that no slip at shelfice interface works
4023     - remove stop for combination non-hydrostatic code and shelfice. That does
4024       not mean, that the results are correct, but at least they are numerically
4025       stable
4026    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
4027    o added adjoint exch routined for all exch*3d* routines
4028      and updated flow directives
4029    
4030    checkpoint58o_post (2006/08/28)
4031    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
4032      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
4033    o change controling S/R for writing pickup file (new S/R do_write_pickup)
4034      and clean-up reading/writing of pickup files.
4035    o fix local version of read/write pickup (NH part) in rotating_tank/code
4036    o simplify EXCH interface:
4037     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
4038     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
4039    o added the regrid package
4040    o shelfice:
4041     - add a simple boundary layer scheme to reduce noise
4042     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
4043    
4044    checkpoint58n_post (2006/08/14)
4045    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
4046       local variable (not in common block).
4047    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
4048      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
4049      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
4050        to work with SingleCpuIO.
4051    o add "_d 0" to real constant of pkg/cfc subroutines ;
4052       update exp. cfc_exemple & tutorial_cfc_offline output files.
4053    o multi-threading and IO:
4054      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
4055        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
4056      - barrier before and after reading.
4057      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
4058      - avoid using MDS_WRITELOCAL for LAND pkg output.
4059      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
4060        common-block variables ; Allows multi-threading with master-thread IO.
4061    o change default MAX_NO_THREADS from 32 to 4 ;
4062      and stop cleanly when MAX_NO_THREADS is too small.
4063    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
4064    
4065    checkpoint58m_post (2006/07/17)
4066    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
4067       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
4068    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
4069       keep global_ocean.90x40x15 (for AD testing) with former secondary test
4070       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
4071    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
4072        add MITgcm_tutorials (= code + all the tutorials)
4073    o ecco, option to compute cost for total ssh (mean+anom)
4074    o consistent with addition of ptracer and ssh in pkg/profiles
4075    o profiles: adding ptracer and ssh
4076    o testreport: change multi-test output-file name
4077      (from output.txt.{name} to output.{name}.txt)
4078    o profiles: now ok for mutli-tiles case
4079    o seaice: add 4 parameters for different advection schemes for area,
4080      (effective) seaice thickness, enthalphy, and snow height. Their default
4081      is the standard parameter SEAICEadvScheme
4082    o calc_gw:
4083     - add cosFacU in zonal viscous flux (harmonic.visc.).
4084     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
4085       of tutorial_plume_on_slope.
4086    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
4087    o calc_gw: true flux-form, account for horizontal grid spacing.
4088      update rotating_tank results, but not plume_on_slope (affected at
4089      truncation level, 11 digits).
4090    
4091    checkpoint58l_post (2006/07/12)
4092    o calc_gw:
4093     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
4094     - remove side-drag for now (need to fix it); update plume_on_slope results.
4095     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
4096    o commit code to make SST/SSS weights spatially variable
4097      (based on either variable in-situ or variable initial T/S weights)
4098    o pkg/ecco:
4099      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
4100        now based on horizontally varying weights wthetaLev, wsaltLev
4101      * cost_averagesflags now returns year indices in addition to day, month
4102      * sflux balance is performed on annual basis
4103        (sflxumm, sfluxmm2, bal_sfluxmm)
4104      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
4105        including separate counting and multipliers
4106    o pkg/rbcs
4107      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
4108    
4109    checkpoint58k_post (2006/07/06)
4110    o testreport:
4111     - always build in dir. "build" (if not there, mkdir build instead of building
4112       & running in input)
4113     - run in dir run (if it exists), in build otherwise.
4114     - call prepare_run (if input/prepare_run exists)
4115     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
4116    o pkg/exf modifications to interpolation and rotation routines for more
4117       reasonable treatment of North Pole singularity: for tracers North Pole
4118       value is set to northernmost zonal-mean value, for zonal velocity it is
4119       set to zero, and for meridional velocity it is set to northernmost value.
4120    o pkg/exf/exf_check_range.F
4121     - add tile index to diagnostics and move stop statement to the very
4122       end of the routine.
4123    o pkg/diagnostics: (diagnostics_main_init.F)
4124      define title of isomorphic variables according to the current config.
4125    o pkg/thsice with pkg/seaice dynamics:
4126    - fix domain of computation (interior only, required for exf) and do exchanges
4127    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
4128    o towards a standard way of dealing with multi-threading in MONITOR
4129      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
4130    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
4131       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
4132    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
4133    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
4134    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
4135       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
4136    o tracer advection:
4137     - clean-up and simplify calc_common_factors.F
4138     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
4139       advection subroutine (but still not used within DST advection S/R)
4140    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
4141    
4142    checkpoint58j_post (2006/06/15)
4143    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
4144      from file (collects calls previously in FORWARD_STEP)
4145    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
4146    o adjoint store dir. adjusted accordingly
4147    o genmake2
4148      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
4149    
4150    checkpoint58i_post (2006/06/14)
4151    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
4152      on wind stress (SEAICEstressFactor defaults to 1.)
4153    o Total number of Timers is finite (<=40): comment out 2 non-essential one
4154      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
4155    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
4156      on CS-grid: no longer loosing mass.
4157    o exf & curvilinear-grid: no longer modify longitude xC & xG.
4158    o pkg/ggl90: fix sloppy output and fix a bug
4159    o pkg/seaice: added SEAICEuseEVPpickup parameter
4160      - Set to false in order to start EVP solver with
4161        non-EVP pickup files when using SEAICEuseEVP
4162      - fix sign error in diffusion in seaice_calc_rhs
4163    
4164    checkpoint58h_post (2006/06/07)
4165    * Modifications for bottom topography control
4166      o replace hFacC by _hFacC at various places
4167      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
4168      o add non-self-adjoint cg2d_nsa
4169      o update autodiff support routines
4170      o re-initialise hfac after ctrl_depth_ini
4171      o works for 5x5 box, doesnt work for global_ocean.90x40x15
4172    * Adding verification for 5x5 box (4-layer) bottom topography control
4173    
4174    checkpoint58g_post (2006/06/07)
4175    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
4176       used for mean seasonal cycle, mean diurnal cycle); add an example
4177       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
4178    o pkg/ggl90:
4179      - add parameter (minimum surface kinetic energy)
4180      - fix bug (avoiding division by zero)
4181    o couple pkg/thsice to pkg/seaice:
4182      - modify advection in seaice to accomodate new scalar fields to be advected
4183      - only muliDimAdection scheme work with seaice/thsice
4184      - mapping of thsice-variables to seaice-variables, back and forth
4185      - does not break the verification experiments, but does not give the
4186        desired results either
4187    o pkg/seaice
4188      - make (default) second order advection a bit less confusing?
4189    
4190    checkpoint58f_post (2006/06/05)
4191    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
4192      to pkg/seaice):
4193      - new routines thsice_map_exf and thsice_get_exf provide the interface
4194      - add an additional formal parameter to thsice_solve4temp
4195    o pkg/exf:
4196      - add new fields wspeed, snowprecip (to be able to couple to thsice)
4197      - correct Stefan-Boltzmann constant
4198      - new parameter for longwave surface emittance
4199      - separate some stuff from exf_bulkformulae into new routines  
4200        exf_radiation, exf_wind
4201      - add new parameters and constants: longwave emissivity for ocean, ice
4202        and snow, evaporation parameters over ice
4203      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
4204        either wind from stress or stress from wind
4205    o pkg/thSIce:
4206    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
4207    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
4208       and THSICE_CALC_THICKN
4209    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
4210    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
4211      to make debugging easier.
4212    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
4213    o pkg/bulk_force:
4214      - clean-up comments and parameters ;
4215      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
4216    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
4217      generate new output for test-experiment: aim.5l_cs.thSI
4218    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
4219      testreport accordingly
4220    
4221    checkpoint58e_post (2006/05/17)
4222    o SEAICE_CGRID adjoint done
4223    o R_STAR adjoint implemented.
4224      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
4225      * need to sort out init. of h0facc, etc.
4226    o Make pkg/profile fully independent of ecco,cost, etc. stuff
4227      to be able to use it in pure forward.
4228    
4229    checkpoint58d_post (2006/04/21)
4230    o upgrade simple test-experiment to tutorial example:
4231     step.1: duplicate the experiment and (step.2) will remove the old copy.
4232      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
4233      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
4234      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
4235      tutorial_global_oce_biogeo    <- copy of dic_example
4236      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
4237      tutorial_plume_on_slope       <- copy of plume_on_slope
4238      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
4239      tutorial_global_oce_optim     <- empty for now (David ?)
4240      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
4241     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
4242    o correct a sign problem in cost_scat.F
4243    o obcs and ptracers: fix boundary conditions for advections schemes
4244      with larger stencil
4245    o thsice adjoint: start
4246    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
4247      completeness
4248    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
4249      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
4250    o ptracers adjoint:
4251      * avoid extensive recomputatations
4252      * fix missing re-init. of gptr (missed by TAF)
4253    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
4254      me to turn off the excessive output to STDOUT that this package produces
4255    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
4256      and add those terms in Vector-Invariant formulation.
4257    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
4258      if the control period (xx_hfluxperiod etc) is 0
4259    o in profiles pkg, clean routines and fix details
4260    o in ecco pkg, reading ssh data:
4261      fix problem in case the model does not start at iter0=0
4262    o fix mnc-pickup/restart for ptracers
4263    o new package prifiles:
4264      code to compute profile-based cost by Gael Forget
4265      (modifs in ecco, ctrl, autodiff)
4266    o Benign bug fix in initialization (spotted by M. Mazloff) of
4267      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
4268    
4269    checkpoint58c_post (2006/03/23)
4270    o adjoint: finish NLFS adjoint and provide reference output in
4271      verification/global_ocean.90x40x15/results_ad_nlfs
4272    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
4273      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
4274      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
4275      with SEAICE_CGRID defined.
4276    o move calendarDumps from "data" to "data.cal" and clean-up the code
4277      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
4278    o add useEXF & useCAL flags (for now, set in hard-coded way)
4279    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
4280      (were missing in NH mode, and wrong in quasihydrostatic mode).
4281      waiting for Chris updated version of calc_gw to add those CALLs.
4282    o fix bug in quasihydrostatic S/R ;
4283      add a test for this option: global_ocean.90x40x15.qshyd
4284    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
4285      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
4286    o add on/off flag useOffLine for package OFFLINE
4287    o seaice:
4288      - modify advection so that it works also on the C-grid
4289      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
4290        problem in multi-tile runs with C-grid
4291      - add flags for clipping ice velocities and/or masking solver forcing
4292      - fix drag (ocean on ice) formulation and a bug that caused noise in the
4293        C-grid solver
4294      - added a few comments to seaice_diffusion.F
4295      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
4296        are now exclusive)
4297      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
4298        required re-ordering the code a little:
4299       + make DAIRN global variable (defined in SEAICE)
4300       + move computation of the viscosities eta and zeta into a new separate
4301         routine (because I need to recompute them in seaice_ocean_stress.F)
4302    
4303    checkpoint58b_post (2006/03/13)
4304    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
4305      update output.txt of exp. aim.5l_cs.thSI
4306    o various mnc cleanups and improvements:
4307      + shrink lookup tables by factor of ~4
4308      + better error reporting when running out of lookup space
4309      + able to handle longer path/file names (up to 500 chars)
4310    o adjoint:
4311      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
4312      - TBD: "hidden" mom_vecinv recomp. in dynamics
4313    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
4314     (allow to differentiate between forcing components using new integer flags:
4315      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
4316     and add new flag to put Dissipation tendency out of Adams-Bashforth.
4317    o ecco
4318      - enable trend removal from SSH anomaly obs.
4319    o adjoint
4320      - a fix for PmEpR when #undef EXACT_CONSERV
4321      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
4322      - try to fix "hidden" recomp. in forward_step for NLFS
4323        (NLFS seems broken sometimes after I checked it in)
4324    o seaice:
4325     - add c-grid version of the dynamic solver:
4326       + three new routines that are the c-grid substitute lsr, dynsolver
4327         and ostres
4328       + put a few fields that were local to dynsolver into global common
4329         blocks, so that I can move the computation of stresses etc into
4330         seaice_lsr (saves coding but may break the adjoint).
4331     - replace more hardwired parameters by runtime parameters
4332     - add ice masks that mask the rhs of the implicit solvers where there
4333       is no ice (commented out in seaice_dynsolver, because i am not sure
4334       if this works properly), eventually this should replace the clipping
4335       of ice velocities in seaice_dynsolver to +/-40cm/s.
4336    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
4337      include it only where its needed
4338    o move balancing of fluxes before the call of external_forcing_surf
4339    o seaice:
4340      - correct units of turning angles (now they are really in degrees)
4341      - move computation of GWATX/Y out of main routine into dynsolver
4342      - initialize GWATX/Y in seaice_init
4343    o Apply mask on Fresh-Water flux (needed for SSH forcing).
4344      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
4345    o seaice: add runtime flags for turning angles (default to zero)
4346    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
4347      and trend from exf forcing and ctrl control adjustments
4348    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
4349      (since checkpoint57x_post)
4350    o change the default rotation period to 86164.s = the Earth rotation
4351    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
4352      and based on a reference stratification. Tested within hs94.cs-32x32x5.
4353    o seaice advection: add code for choosing between the default (2nd order
4354      central differences) and multiDim advection schemes provided by
4355      pkg/generic_advdiff
4356    o seaice:
4357      - removed all references to SEAICE_GRID.h fields from
4358        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
4359        (cubed-sphere configuration will change a little)
4360      - grid computations in seaice_init are obsolete now.
4361      - cleaned up code a little so that is easier to read (hopefully).
4362      - added new (better?) discretizations of default advection and diffusion
4363        (turn on with SEAICEuseFluxForm)
4364      - replace 1 in 3d global fields by kSurface in growth.F
4365      
4366    checkpoint58a_post (2006/02/13)
4367    o seaice:
4368      - bug fix in advect.F
4369    o shelfice:
4370      - separate shelfice load anomaly from pload (breaks with time
4371        dependent forcing), => introduce constant field shelficeLoadAnomaly.
4372        Its default is 0., but it may be computed more cleverly from (unknown)
4373        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
4374        done offline. A good approximation of the pressure load anomaly is
4375        necessary to avoid large initial adjustment processes underneath
4376        deep-reaching shelfice.
4377      - small fix in ISOMIP shelfice_thermodynamics
4378      - add more sophisticated thermodynamics of Hellmer (1989), this is
4379        now the default
4380      - give a few constants more intuitive names
4381    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
4382      if bulk formulae are used in long integration (especially EmPmR). Turn
4383      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
4384      if balancePrintMean, the imbalance that is substracted is printed to
4385      STDOUT.
4386    o fix bug (typo) in obcs_apply_eta.F
4387    o add a new package shelfice which enables us to model the circulation
4388      underneath shelf-ice with draughts of hundreds of meters.
4389     - works
4390     - to do: + include improved thermodynamics
4391              + check whether kSurfC (from model/inc/SURFACE.h) can be used
4392                instead of new field kTopC
4393              + can we use topoFile, Ro_surf and existing code in ini_depth.F
4394                instead of new field R_shelfIce and new code in ini_depth.F
4395                and ini_mask_etc.F?
4396              + adjust vertical mixing schemes?
4397    o seaice pkg:
4398     - add a cpp-flag to include a simple formula for a salinity dependent
4399       freezing point of sea water at the surface
4400     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
4401       meridional stresses are now different (and hopefully correct)
4402    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
4403       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
4404       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
4405    o pkg/diagnostics: add options and parameters for regional-statistics
4406       diagnostics ; define regions by reading a region-mask from a file
4407       (might add other options later)
4408    o pkg/bulk_force:
4409     - add option and parameters to use AIM surface-flux formulae.
4410     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
4411       others forcing fields (defined in PARM05, parameter file "data") are loaded
4412       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
4413     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
4414     - use the right EXCH call for uwind,vwind (to work on CS-grid).
4415     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
4416       and parameters (note: calcWindStress replaces .NOT.readwindstress).
4417     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
4418    
4419    checkpoint58 (2006/01/12)
4420    o add "--embed-source" option to genmake2 which, when the supporting
4421      tools can be compiled (as determined by genmake2) will turn on the
4422      embed_files package which then embeds the entire MITgcm source code
4423      (*.[fFhc] + Makefile) used for the build within the executable
4424      - requested by CNH but off by default
4425      - adds a paltry <9MB to the mitgcmuv executable in most cases
4426      - only writes the output when useEMBEDSRC in eedata is true
4427    o clean up 3-dim. relaxation codes:
4428      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
4429      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
4430      * Thanks to Tom Haine for testing!
4431    
4432    checkpoint57z_post (2005/12/31)
4433    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
4434      affects output (@ truncation level) of exp. plume_on_slope ; updated.
4435    o fix the pickup behavior for obcs in combination with ptracers
4436    o fix a bug in ptracers_external_fields_load
4437    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
4438      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
4439    o transfered surface NH pressure to eta field (if exactConserv).
4440    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
4441         and update lab_sea output.txt file.
4442    o completing 3-dim. relaxation code: additional term
4443         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
4444      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
4445      * At compile time, in "EXF_OPTIONS.h" set
4446          #define  ALLOW_CLIMTEMP_RELAXATION
4447          #define  ALLOW_CLIMSALT_RELAXATION
4448      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
4449          tauThetaClimRelax3Dim = 15552000.0,
4450          tauSaltClimRelax3Dim  = 15552000.0,
4451      * 3 cases:
4452          1) Use a constant-in-time 3-dim. field
4453          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
4454          3) Real-time relax. to time-evolving prescribed field
4455    o Adding Laplacian-type smoothness constraint on
4456      initial and boundary (forcing) controls (ic, bc)
4457      * enable at compile-time via
4458        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
4459      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
4460      * Absolute scale somewhat unclear so far
4461      * no area weighting was included since no other cost term does so far
4462    
4463    checkpoint57y_post (2005/12/08)
4464    First step for a NLFS adjoint
4465    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
4466    o new init. routines for calc_r_star, calc_surf_dr
4467    o still need to deal with ini_masks_etc
4468    o testreport seemed happy
4469    checkpoint57y_pre (2005/12/08)
4470    
4471    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
4472    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
4473    o add new offset feature to offline pkg (plus minor cleanup)
4474    o cfc fixes for final year of integration
4475    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
4476      be in GCHEM_OPTIONS).
4477    
4478    checkpoint57x_post (2005/12/04)
4479    o fix testreport Pb in multiple test experiment.
4480    o cleanup our namelist syntax in verification:
4481      - make it more F95 standards compliant (some work still needed)
4482      - allows the vast majority of our tests to work with gfortran
4483    o Non-Hydrostatic:
4484     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
4485     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
4486    o Allow to apply AB on T,S rather than on AB(gT,gS):
4487     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
4488     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
4489       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
4490     - need a "clever" read_pickup to restart from the other AB formulation
4491    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
4492    o remove some unused variables (reduces number of compiler warnings)
4493    o adjoint
4494      * Disable useVariableViscosity for adjoint for time being
4495        (there are a number of extensive recomputations)
4496      * Initialize certain variables needed for adjoint
4497    
4498    checkpoint57w_post (2005/11/03)
4499    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
4500                 fix the singleCpuIO RS version of MDSWRITEFIELD
4501       and add a WARNING if using globalFiles=T with multi-processors.
4502    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
4503      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
4504    o tracer advection scheme:
4505      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
4506       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
4507       was not very convenient).
4508      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
4509       (further tests needed for the implicit DST & Flux-Limiter schemes).
4510    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
4511      and sRef for convenience, handy, when you want to initialize
4512      ptracers in a large domain with a constant non-zero value. Also,
4513      untangle ptracers_init.F a little.
4514    
4515    checkpoint57v_post (2005/10/13)
4516    o change dome exp. to use variable viscosity in side-drag terms.
4517    o remove all the files from the cfc_offline test since they are now
4518      incorporated into tutorial_cfc_offline which has been producing
4519      identical results for a few days of testing
4520    o add new parameter: sideDragFactor to enable half-slip-side BC
4521      and change side-drag S/R to use viscosity from mom_calc_visc
4522      (can switch back by setting sideDragFactor=0.); affects results at
4523      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
4524       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
4525    o vorticity & strain are now computed without masking, to account for
4526      no-slip-side BC in variable viscosity calculation ; mask is applied
4527      anyway later on, before computing advection/coriolis terms.
4528    o modify exp4 to test new obcs support for reading from external files
4529      and for passive tracers
4530    o fix behavior of ptracers_monitor when monitor output is written to a
4531      netcdf-file; still not independent of monitor.F (writes in the same
4532      file).
4533    o change default value of tRef (put a uniform, meaningful value for ocean
4534      & atmos) and initialize sRef (was missing, as Martin mentioned).
4535    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
4536      to be proportional to enstrophy dissipation length.  Thus,
4537       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
4538      This is now consistent with Smagorinsky and with the manual.
4539    
4540    checkpoint57u_post
4541    o OBCS and PTRACERS: add open boundary support for passive tracers
4542      - either use homogenous (pseudo) v.Neumann conditions or prescribe
4543        OB-values from file; this is not different from the way theta and salinity
4544        are treated
4545      - however, Orlanski-radiation conditions are not supported, and the model
4546        will stop if you use pTracers and Orlanski at the same time.
4547      - beefed up the rountine obcs_external_fields_load: now only those open
4548        boundary values are overwritten with values from files for which there
4549        are really files, otherwise the OB-fields remain untouched. This makes
4550        it possible to use different OBs at different ends of the domain (as
4551        with EXF)
4552    o reduce number of exch calls in shap_filt (s2).
4553    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
4554      truncation level) 4/5 MLAdjust test results (11&12 digits match).
4555    
4556    checkpoint57t_post (2005/10/03)
4557    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
4558    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
4559      same truncation, independent of the face number: affects affects several
4560      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
4561    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
4562      note that biharmonic viscosity + no-slip was not tested in any experiment.
4563    o fix bug in non-linear free-surf side-drag ; generate new output for
4564      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
4565    o make mnc honor the writeBinaryPrec flag for most kinds of output
4566    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
4567    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
4568      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
4569    o add brackets in multi-terms sum to get same truncation, independent of
4570      the face number (manage to get exactly same value of gU,gV at the cs-edge)
4571      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
4572    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
4573      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
4574      a maximum grid-scale Reynolds number.  Also, changes all length calculations
4575      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
4576      Suggested values of viscosity parameters found in mom_calc_visc.
4577      Many new viscosity diagnostics available.
4578    
4579    checkpoint57s_post (2005/09/20)
4580    o Add clearing-house for viscosity calculations, mom_calc_visc and
4581      correct numerous bugs in LeithD and Smagorinsky discretizations.  
4582      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
4583      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
4584      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
4585      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
4586      The Strain-Tension form is now called with useStrainTensonVisc=.true.
4587      ViscAhStrain and viscAhTension are now retired.
4588    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
4589    o In response to JMC's bug report, genmake2 now ignores any soft-links
4590      that it finds in the *current* directory when searching for files.
4591      Soft-links found in any other source directories will still work as
4592      they did before.
4593    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
4594      a C routine to unlimit the stack size
4595    o mnc-ify pkg/aim snapshot vars
4596    o mnc-ify pkg/land as requested by Daniel
4597    o various changes to mnc including:
4598      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
4599      - output can now be grouped so that all files within a group
4600          change the ITER portion of their names in lock-step together
4601      - can now read ("global") PER-FACE (in addition to PER-TILE) files
4602          and works with both EXCH1 and EXCH2 (but needs more testing)
4603      - writing works for all verification test cases w/ g77 on Linux
4604    
4605    checkpoint57r_post (2005/09/07)
4606    o make MNC variable initialization happen earlier
4607    o add diagnostics for (almost) each term of the momentum Eq.
4608    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
4609    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
4610    o remove MINIMAL_TAVE_OUTPUT option ;
4611      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
4612    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
4613      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
4614    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
4615    o add time-dependent SST, SSS control
4616    o cost terms in ecco/ modularized (new cost_generic.F)
4617    o cost_averages routines are modularized (new cost_averagesgeneric.F)
4618    o new infrastructure for seaice model vs. obs misfits in seaice/
4619      * driver from the_main_loop.F is seaice_cost_driver.F
4620      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
4621      * gradient check in Exp. 6a of natl_box_adjoint/
4622    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
4623      (see README file)
4624    
4625    checkpoint57q_post (2005/08/19)
4626    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
4627    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
4628      - bug was reported by Jean-Michel and Ian Fenty
4629    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
4630      update exp. cpl_aim+ocn output.
4631    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
4632      Needed for high-res. runs with large global files
4633      to be able to limit tapelev size
4634    o Changed some tests for adjoint:
4635      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
4636      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
4637      * global_ocean.90x40x15/ back to default 3-level checkpointing
4638    o Modifications to enable scripted COMMON to MODULE conversion
4639      * verification/OpenAD/code/ has necessary scripts and description;
4640      * converts, compiles and runs successfully;
4641    
4642    checkpoint57p_post (2005/08/01)
4643    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
4644    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
4645      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
4646    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
4647    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
4648      (was already the case for dissipation with mom_vecinv,
4649       and also the case for grad.PhiHyd when staggered-timeStep)
4650      This will allow to put dissipation out-off the AB time-stepping.
4651     Unfortunately, affects truncation error. Update output of exp. that "fails"
4652      (cg2d matching number) and leave the others for later: front_relax(10),
4653      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
4654      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
4655    
4656    checkpoint57o_post (2005/07/30)
4657    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
4658      (2) its ready to be documented during the 20050801 DocFest
4659    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
4660      for ideal_2D_oce and lab_sea on linux_ia32_g77
4661    o set to #undef CTRL_SET_OLD_MAXCVARS_30
4662      in global1x1_tot/code_seaice_adj to access indices 32, 33
4663      (worth another tag)
4664    
4665    checkpoint57n_post (2005/07/29)
4666    o adding precip control xx_precip 32
4667    o adding swflux control xx_swflux 33
4668    o Replacing 10 forcing penalty cost routines by 1 generic.
4669    o Implementing partitioning in time-mean and variable adjustment
4670      for atmos. state.
4671    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
4672    o in natl_box_adjoint:
4673      * updated exp 1 to 10
4674        (but does not have time-mean vs. variable split results yet)
4675    o updated global1x1/*_seaice_adj/
4676      to incorporate latest changes
4677    o enable useSingleCpuIO for mdsio vector routines
4678      (applies in particular to tapelev I/O)
4679    o removed inefficient K-loop in all active_file*control*.F
4680    
4681    checkpoint57m_post (2005/07/28)
4682    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
4683      and advect_cs (use EXCH-2 and standard cs-32 grid files).
4684    o pkg/exch2: filling of face-corner halo regions is optional
4685      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
4686    
4687    checkpoint57l_post (2005/07/14)
4688     tag before updating tutorials (pre-release-2)
4689    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
4690       for output and interpolation of input fields onto model grid)
4691    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
4692       Affects results of exp. rotating_tank ; update output.txt.
4693    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
4694          and taking the square quantity and/or using a fraction-weight field.
4695    o fix aim_diagnostics_init.F mate numbers.
4696    o add mnc output capability to diagnostics/diagstat and update
4697      our cvsignore files for the ACSII output generated
4698    
4699    checkpoint57k_post (2005/07/02)
4700    o lab_sea now uses diagnostics package and provides a suite of
4701      new EXF diagnostics output.
4702    
4703    checkpoint57j_post (2005/06/30)
4704    o exf
4705      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
4706        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
4707        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
4708      * extended diagnostics output
4709        - now includes all EXF variables
4710        - hs, hl moved to common block
4711        - separate S/R for diagnostics, called after ctrl vector is added
4712        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
4713        - EXFqnet contains true Qnet (i.e. includes qsw)
4714      * updated verif. lab_sea, global_with_exf
4715      * Rearranging hflux (exf_mapfields -> exf_getforcing)
4716        to ensure that diagnostics sees a true EXFqnet
4717    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
4718    o diagnostics pkg: change pointers so that 1 diagnostic can be used
4719      several times with different frequencies.
4720    o mnc-ify the thsice package as requested by Daniel Enderton
4721      - the monitor--MNC output needs work
4722      - many attributes need to be added (most are currently blank)
4723    o mnc-ify theaim_v23 package as requested by Daniel Enderton
4724      - many attributes need to be added (most are currently blank)
4725    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
4726    o add Sadourny like discretization to the 4th.O vorticity advection scheme
4727    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
4728      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
4729         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
4730    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
4731     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
4732    
4733    checkpoint57i_post (2005/06/19)
4734    o Diagnostics package was changed: diagnostic allocation is now deactivated
4735      by setting an empty file name in the namelist (used to be by setting 0 frequency)
4736    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
4737      add 1rst Order upwind vertical Shear.
4738    o add a quick fix for A/B checkpointing in OFFLINE mode
4739    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
4740      end-run around the C/Fortran linking horror in eesup/src/timers.F
4741    o added pkg/runclock: allows user to terminate run based on wall clock
4742    o added non-hydrostatic scaling parameter: nh_am2
4743    o pkg/my82: futile attempt to make results compiler-independent by adding
4744      some "_d 0", etc. no effect.
4745    o for mnc output, fill the 'T' coordinate var with myTime and create a
4746      separate 'iter' variable for iteration count
4747    o pkg/diagnostics:
4748      add new capability: output of Global/Regional & per-level statistics ;
4749      tested against monitor output (including land & thSIce) on various exp.
4750    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
4751    
4752    checkpoint57h_done (2005/05/19)
4753      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
4754      data.diagnostics, data.gchem, data.ptracers) is done.
4755    
4756    o pkg/diagnostics: prepare for Global/Regional statistics.
4757      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
4758    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
4759      and rename it: DIFFERENT_MULTIPLE
4760    
4761    checkpoint57h_post (2005/05/14)
4762    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
4763    o pkg/diagnostics: change output frequency, now in seconds (instead
4764      of Nb of iterations). This requires to change data.diagnostics.
4765    checkpoint57h_pre (2005/05/12)
4766    
4767    o in mnc, let the user create the output dir if both mnc_outdir_date
4768      and mnc_outdir_num are false
4769    o add fflags() to pkg/diagnostics which allows one to specify, on a
4770      per-file basis, the file precision [default behavior is unchanged]
4771    o added diagnostics to pkg/kpp, including computation of mixed layer
4772      depth based on a temperature/density criterion
4773    o updated verification/natl_box to test the new pkg/kpp diagnostics
4774    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
4775    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
4776    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
4777      not mnc -- this mistake was found by JMC and is now corrected
4778    
4779    checkpoint57g_post (2005/04/15)
4780    o add Adams-Bashforth 3rd Order time stepping:
4781      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
4782      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
4783    checkpoint57g_pre (2005/04/15)
4784    
4785    o make lambda[Theta,Salt]ClimRelax spatially varying
4786      (default remains spatially uniform constant based on tau)
4787    o added new control variables
4788      * init. uVel, vVel, etanN
4789      * lambda[Theta,Salt]ClimRelax
4790    o separate masks used for ctrl_pack/unpack 'from write_grid' output
4791      (suggested by G. Forget)
4792    
4793    checkpoint57f_post (2005/04/06)
4794    o add parameter "baseTime" = model base time = time at iteration zero
4795      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
4796      account for baseTime shift
4797    o move Coriolis arrays from PARAMS.h to GRID.h
4798    checkpoint57f_pre (2005/04/06)
4799    
4800    o mnc-ifying the seaice package
4801    o introduced an alternative length scale calculation for use in the limiting
4802      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
4803    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
4804    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
4805      as well as grad(vort3).  Made it compatible with both approximate form
4806      for the cubed sphere and full form of these gradients.  Added flag
4807      useFullLeith to select between approximate and full form.  
4808    o add "d0" in getcon.F to reduce differences between compilers/platforms
4809      update output.txt of exp. fizhi-gridalt-hs
4810    o change port_rand funtion to allow to set the seed.
4811    o fix obscure MNC bug involving conversion between reals and integers
4812      - it caused no problems with certain (eg. gcc, ifc) compilers but the
4813        new version is now more standards-compliant
4814    o adjoint-related modifications
4815      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
4816      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
4817      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
4818    
4819    checkpoint57e_post (2005/02/28)
4820    o Adding eddy stress controls a la Ferreira et al.
4821    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
4822    
4823    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
4824      update output.txt of exp. fizhi-gridalt-hs
4825    o add more "Z" dimensions and associated coordinate vars to MNC
4826    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
4827    o parameter calendarDumps: when set, approximate months (30-31 days) and years
4828      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
4829      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
4830      months and years.  Requires pkg/cal.
4831    o diagnostics: add pickup functionality
4832      - off by default for backwards compatibility
4833      - current version only uses MDSIO -- MNC will be added
4834    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
4835    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
4836    
4837    checkpoint57d_post (2005/02/11)
4838    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
4839    o modify verification/ideal_2D_oce so that it tests the creation of mnc
4840      output from the diagnostics package
4841    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
4842    o make genmake2 more portable by using ".$FS" instead of ".f" for more
4843      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
4844    o add coordinate variables to the MNC output from the diagnostics package
4845    o change MNC-flags default value: true when useMNC=TRUE
4846    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
4847      the ability (off by default) to read the grid information using MNC
4848    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
4849    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
4850    o do snap-shot diagnostics at the middle of the time-interval (instead of
4851      at the end).
4852    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
4853      new test for AIM with thSIce + slab-ocean
4854    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
4855    o move state variable diagnostics to the beginning of the time step ;
4856      (note: still needs some work specially for snap-shot diagnostics)
4857      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
4858    
4859    checkpoint57c_post (2005/01/27)
4860    o Change testing option (-ieee) to get closer agreement between g77 & ifort
4861    o generate new output.txt files on faulks with g77 & the new -ieee option
4862    checkpoint57c_pre (2005/01/27)
4863    
4864    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
4865      update output.txt of exp. global_ocean.90x40x15
4866    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
4867      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
4868    o add saltFlux(+File) forcing capability with periodicExternalForcing
4869    o allow to use pkg diagnostics for GM-Redi & ThSIce output
4870    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
4871    o improvements for the MNC output from DIAGNOSTICS:
4872      - correct handling of the unlimitied dimension
4873      - all dims now have associated coordinate variables
4874      - variables located at U, V, and Corner ("Z") points are now written
4875        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
4876        *all* data points are output
4877    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
4878    o added pkg/seaice/seaice_monitor.F
4879    o mdsio_readfield.F can now read files visible only to master MPI process.
4880    o pkg/seaice: some test code for ice-modified ocean stress
4881    o exf_getffields interpolation defaults to bilinear for all scalar forcing
4882      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
4883      spurious negative numbers for precipitation and humidity.  Will cause
4884      some small numerical differences for integrations using pkg/exf/exf_interp.F.
4885    o pkg/ctrl/
4886      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
4887        May be enabled via doPackDiag
4888      *  introduce z-scaling of
4889         + gradient (doZscalePack) and
4890         + control (doZscaleUnpack)
4891    o pkg/mdsio/
4892      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
4893      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
4894    
4895    checkpoint57b_post (2004/12/20)
4896    o simplify options in diagnostics_fill arguments (remove weird combinations)
4897    o fix MNC coordinate variables so that they now contain per-face index
4898      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
4899      general, EXCH2 grids are only aligned to a "local" coordinate system
4900    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
4901    o Implement instantaneous output within pkg diagnostics:
4902      setting a negative frequency in data.diagnostics produces
4903     "snap-shot" output (as opposed to time-average if freq > 0)
4904    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
4905      NOTE: change ptracer diagnostics name: use 2 characters to work with
4906            more than 9 tracers. Add also diagnostics of advect & diffus flux.
4907    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
4908      becomes the coordinate variable for the 'T' dimension
4909    o add CF-style coordinate variables to MNC
4910      - just a first cut:  numbers are meaningless on the cubesphere and
4911        missing along the T axis but otherwise it works!
4912    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
4913    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
4914    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
4915      this is based directly on what the model compute, so that the content of
4916      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
4917    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
4918    o clean up build options files for SunOS, in particular
4919      - remove -traditional from xmakedepend
4920      - change -xarch=v9 to -xarch=native for f77
4921      - restore use of make (not gmake)
4922      - add CC=gcc if using g77
4923    o changes per discussion of AM, JMC, & EH3 today:
4924      - move redundant "grid" variables out of "state" -- in preparation of
4925        creating proper CF-style coordinate variables and in recognition
4926        that any/all grid variables can be easily copied (eg. w/NCO) from
4927        the grid files into any of the other NetCDF files
4928      - *always* output grid variables with MDSIO (this will eventually be
4929        changed)
4930      - output MNC grid file if useMNC is true
4931    o every instance of _END_MASTER() has been found and replaced with
4932      _END_MASTER( myThid ) in order to satisfy certain picky Sun
4933      preprocessors
4934    o re-arrange diagnostics pkg initialisation:
4935     - allow each package to extend the available diagnostics list
4936     - add some checking and fix small problems (multi-threaded, ...)
4937     - new S/R diagnostics_fill (replace fill_diagnostics):
4938       look through the short list of active diag. (instead of the long list)
4939       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
4940    
4941    checkpoint57a_post (2004/12/10)
4942    o this set of changes restores TAMC compatibility
4943      tested for global_ocean.90x40x15 adjoint on trough
4944      (what a pain)
4945    
4946    checkpoint57a_pre (2004/12/10)
4947    o some modifs in tools/build_options for sunos
4948    o call ctrl_pack for ctrl at end for optimcycle=0
4949    
4950    checkpoint57 (2004/12/09)
4951    o add horizontal bi-harmonic viscosity for vertical velocity
4952      - new parameter viscA4W (defaults to viscA4)
4953      - affects only non-hydrostatic code
4954      - to be done: no-slip lateral boundary conditions
4955    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
4956    o implement Implicit Vertical advection for pTracers
4957    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
4958      (implemented also for implicit vertical diffusion & advection)
4959    o OBCS: extend application of tracer open boundary conditions
4960      to a strip beyond the boundary of width Olx/Oly
4961    o add call monitor to TAF set of required calls (flow directives)
4962      and include in natl_box_adjoint
4963    o untangle a few ifdefs related to cost, ctrl, autodiff
4964      untangel a few ALLOW_ECCO_OPTIMIZATION
4965    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
4966      (theta2, salt2 in ecco_cost_weights)
4967    
4968    checkpoint56c_post (2004/12/03)
4969    o OBCS as control variables
4970      - update ctrl_ad_diff.list, obcs_ad_diff.list
4971      - remove balance of obcs controls from default
4972      - fix index bug nobcs in ctrl_init
4973      - fix dummy fields filen in ctrl_pack
4974      - add dummy weights for obcs
4975    o lsopt: comment out fort.94 output
4976    o optim:
4977      - remove unnecessary header files
4978      - adjusted namelists
4979      - add xerbla.F to Makefile
4980    o exf:
4981      - multiple modifications of exf_check_range
4982      - unit change in exf_init_runoff from [m/year] to [m/s]
4983    o mdsio:
4984      - i/o-vector change debugLevel from debLevA to debLevB
4985    
4986    checkpoint56b_post (2004/12/01)
4987    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
4988      is called from DO_THE_MODEL_IO
4989      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
4990      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
4991      - clean up PTRACERS_WRITE_TIMEAVE a little
4992    o add another verification experiment that tests both the cfc-pkg and
4993      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
4994      reactive tendencies treated inline with regular timestepping
4995    o testreport previously did a lousy job of comparing small numbers, so
4996      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
4997      implemented in the little c-progam tmp_cmpnum.c which is embedded in
4998      testreport.
4999    o ptracers_monitor: bug fix for MPI
5000    
5001    checkpoint56a_post (2004/11/28)
5002    o GCHEM: finish reorganizating the package
5003      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
5004        (introduces another 3D-array for each passive tracer, but only if
5005        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
5006        gchemTendency is not needed because the timestep is done separately)
5007      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
5008      - GCHEM is now---more or less cleanly---separate from PTRACERS
5009      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
5010        so clear to me how that should be done in a general way.
5011    o CFC: improve formatting of output in CFC_ATMOS
5012    o PTRACERS:
5013      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
5014        that ALL experiments with ptracers enable can be checked. This makes
5015        GCHEM_MONITOR obsolete.
5016      - include a runtime parameter PTRACERS_monitorFreq that defaults to
5017        monitorFreq
5018      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
5019    o add PTRACERS (PTR0[1-5]) to testreport output
5020    o exf_check_range:
5021      * default changed to .TRUE.
5022      * will check values for niter0 if debLevA, every timestep if debLevB
5023      * STOP in exf_check_range if 'out of range'
5024      * range chosen generous to allow for potential extema
5025      TBD: a version with stricter range
5026           permitted range would be runtime parameters
5027    o GMredi:
5028      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
5029      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
5030      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
5031    o GCHEM:
5032      - move call to GCHEM_FORCING_SEP, so that it is now called before
5033        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
5034      - introduced a useGCHEM runtime flag and applied it everywhere.
5035      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
5036        this flag is now only visible within GCHEM-pkg routines.
5037      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
5038        be replaced by a 3D array that is computed before thermodynamics; for
5039        this, the tracer ID iTracer had to be included into the parameter list
5040        of ptracers_forcing
5041      - set up forward_step to call gchem_forcing, that will replace
5042        gchem_forcing_int in ptracers_forcing
5043      - cleaning up
5044    o small cleaning of exch2: remove files that are also in eesupp/src
5045    
5046    checkpoint56 (2004/11/17)
5047    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
5048    o mnc: cleanup "full" files--fixes out-of-memory problem
5049    o ECCO-GODAE
5050      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
5051      * fully merged and updated from SIO code
5052        windstress sign change affects
5053        - exf_inscal_[u/v]stress
5054        - sign of xx_tau[u/v] adjustments
5055        - signs in cost_scat
5056      * ctrl_get_gen: avoid update of tau[u/v] for first few days
5057      * natl_box_adjoint updated and compressed
5058      * 2-level checkpoint switch added
5059        (tested in EXP. 1 of natl_box_adjoint)
5060      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
5061    o SVD
5062      * first complete, non-hacked version for SVD calculations
5063      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
5064        performed via direct access files admtlm_vector.it????
5065        (via ctrl_[un]pack)
5066      * optimcycle is used for ARPACK iteration counter
5067        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
5068      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
5069        and add linear transforms where necessary
5070      * controls are initial/final SST, SSS (can be extended; need to check
5071        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
5072    o mdsio: filename info to both stderr, stdout
5073    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
5074      from sign change
5075    
5076    checkpoint55j_post (2004/11/10)
5077    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
5078      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
5079    o add consistent build directories and .cvsignore files to verification
5080    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
5081    o make all subroutines 30 or less characters in length for certain older
5082      compilers to work (a thorough search only turns up two routines in
5083      pkg/ptracers)
5084    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
5085      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
5086    
5087    checkpoint55i_post (2004/10/28)
5088    o change arrays for total vertical diffusivity (2.D if explicit,
5089      3.D if implicit) ; each ptracer uses its own background value.
5090    o added mnc/NetCDF output capability to ocn_compon_interf
5091      - added bits to verification/cpl_aim+ocn so that it can run on
5092        ITRDA and other clusters without the mpirun "-wd" option
5093    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
5094      configuration
5095    o give MNC the ability to create additional files rather than
5096      exceeding a specified file size limit "MNC_MAX_FILESIZE"
5097      - the default is just less than 2GB which is a practical limit
5098        on many systems
5099    o Compute the non-local term using either KPP vertical diffusivity (=default)
5100       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
5101    
5102    checkpoint55h_post (2004/10/20)
5103    o add verification test "vermix"
5104    o remove all the *_ioinc flags and replace with the single global
5105      outputTypesInclusive flag
5106    o allow to set a vertical profile of vertical diffusivity for T & S
5107    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
5108    o useMNC moved from data.mnc to data.pkg
5109    
5110    checkpoint55g_post (2004/10/14)
5111    o Renaming carbon AD experiments to comply with testreport conventions
5112    o Updating adjoint of Held-Suarez hs94.1x64x5
5113    o Fixing directives for non-ECCO forward_step, after ECCO directives
5114      have been fixed to avoid recomp. of do_oceanic_phys
5115      Works well for global_ocean.90x40x15,
5116      but recomp. issue remains for carbon
5117    o Updating adjoint output for natl_box_adjoint after
5118      pkg/ecco has been modified (see taga c55d_post)
5119    
5120    checkpoint55f_post (2004/10/13)
5121    o rename to timeave_init_fixed
5122    
5123    checkpoint55e_post (2004/10/13)
5124    o some delicate re-shuffle of store directives to avoid one
5125      extra call of do_oceanic_physics
5126      affects ecco_the_main_loop.F, do_oceanic_physics.F
5127      checkpoint_lev1_directives.h
5128    o NB: this may break global_ocean adjoint temporarily,
5129      but it is clear how to fix it. Will do later, need this now.
5130    
5131    checkpoint55d_post (2004/10/11)
5132    o ECCO specific cost function terms (up-to-date with 1x1 runs)
5133    o ecco_cost_weights is modified to 1x1 runs
5134    o modifs to allow observations to be read in as
5135      single file or yearly files
5136    o enable to read exf forcing fields as either
5137      single file or yearly files (flag useExfYearlyFields)
5138    checkpoint55d_pre (2004/10/08)
5139    
5140    o switch between 2-level and 3-level checkpointing
5141    o add ability of MNC to write local and "partial" (eg. 2D slices where
5142      the full 3D field is never actually stored) arrays to NetCDF files
5143      with the correct (that is, the complete multi-dimensional) set of
5144      array indicies
5145      - used in mom_vecinv() to write the diagFreq output
5146      - tested (demonstrated) in verification/aim.5l_cs
5147    o further mnc-ification
5148      - add verification/lab_sea to the list with mnc setups
5149      - fix undefined mnc v-names in cd_code
5150      - add kpp to mnc output (both snapshot and timeave)
5151    o non-hydrostatic code
5152      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
5153        in calc_gw.F
5154      - defaults to viscAh
5155      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
5156        friction or Leith) in non-hydrostatic mode, as long as there is
5157        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
5158    o pkg/cost
5159      extend simple cost functions to treat time mean quantities
5160      (T,U,V) via cost_accumulate_state from cost_tile
5161    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
5162        be 2 times larger than the minimum size the advection scheme requires.
5163        now get a perfect conservation of salt in advect_cs test-exp (updated)
5164    o GGL90 (Gaspar's TKE mixed layer)
5165      - add horizontal diffusion of TKE, requires exchanges in
5166        do_fields_blocking_exchanges, horizontal diffusivity is zero by
5167        default. In OPA there is no horizontal diffusion of TKE but the
5168        mixing coefficients are computed from a horizontal average of TKE of
5169        6 points or so. I think that diffusion has a little more physical
5170        justification.
5171      - clean up ggl90_calc in the hope of reducing memory usage (this hope
5172        was in vain)
5173      - mask tke-variable in ggl90_init
5174    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
5175    o fix biharmonic diffusion on CS-grid.
5176    o more obcs stuff
5177      - added obcs_external_fields_load as an alternative to the EXF-pkg option
5178        for reading boundary values. This routine is called from
5179        obcs_prescribe_read
5180      - updated obcs_check
5181      - changed sponge layer relaxation parameter units for days to seconds
5182      - turned off sponge layer by default
5183      - changed argument list of OBCS_CALC to myTime+deltaTclock
5184      - fixed about 35 bugs in obcs_external_fields_load
5185    
5186    checkpoint55c_post (2004/09/23)
5187    o obcs stuff
5188      - new runtime flags useOBCSprescribe, useOBCSbalance
5189      - re-arranged obcs_calc
5190      - moved exf_getobcs to obcs_prescibe_read
5191        obcs_prescibe_read is called after ORLANSKI stuff
5192        and independent of it (executable can contain all).
5193      - updated obcs_check
5194      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
5195        These may be necessary only if tangential velocities are
5196        prescribed at OB, not sure, needs testing.
5197    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
5198      which simplifies the calls and passes the ifc check-bounds test
5199    
5200    checkpoint55b_post (2004/09/22)
5201    o add a 2D scalar, Z location, exchange_2 routine.
5202    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
5203      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
5204      affects advect_cs results (for the wrong reason): update output.txt
5205    o use a more standard discretization for biharmonic viscosity ;
5206     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
5207      affects results of dome set-up: update output.txt
5208    o fix gad_advection.F (CubedSphere part), back to version 1.23
5209    o fix bug in mom_vi_del2uv.F (CubedSphere part).
5210    
5211    checkpoint55a_post (2004/09/20)
5212    o merged code to
5213      * prescribe/read time-dependent open boundaries
5214        (works in conjunction with exf, cal)
5215      * sponge layer code for open boundaries
5216      * each boundary N/S/E/W now has its own CPP option
5217        (healthy for the adjoint)
5218    
5219    checkpoint55 (2004/09/17)
5220    o up-to-date adjoint of previous breaks
5221      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
5222      - global_ocean_ebm: adjoint still needs fix (TLM ok)
5223      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
5224      - carbon: * remove tr1-related adjoint verification
5225                * add ptracer as control variable
5226    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
5227      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
5228    
5229    checkpoint54f_post (2004/09/16)
5230    o in verification/carbin/ remove experiment related to
5231      ALLOW_PASSIVE_TRACER (array tr1 etc)
5232      code_ad/ input_ad/ results_ad
5233    
5234    o add two new packages
5235      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
5236        + subject to optimization (memory)
5237      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
5238        + subject to reordering (many GOTOs in the original code)
5239        + so far opps is called for every (i,j) point, and then operates in
5240          the vertical; one may want to reorder the scheme in order operate in
5241          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
5242          fields)
5243    o overhaul of IO so that we now have flags for MDSIO and/or MNC
5244      - all verification tests compile and run with linux_ia32_g77
5245      - defaults are compatible with current input files--nothing
5246        should change if you were not previously using MNC
5247      - MNC output has been added in numerous places (eg. timeave)
5248        but there are still a few writes not yet do-able with MNC
5249        (this is in progress)
5250      - flags now allow for either/or/both use of MDSIO and MNC and
5251        documentation will soon follow
5252      - numerous small formatting cleanups for ProTeX
5253    o add version info (via BUILD_INFO.h) to MNC and stdout
5254    
5255    checkpoint54e_post (2004/09/02)
5256    o add two new packages
5257      - pp81 (Packanowski and Philander, 1981), Richardson number and
5258        stratification dependent mixing
5259      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
5260      - these scheme operate in a similar manner as KPP (without ghat, of
5261        course), however there is only one diffusivity that is used for both
5262        temperature and salinity (and passive tracers)
5263    o add offline package
5264    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
5265      provided by Stephanie Dutkiewicz
5266    o genmake2: add ability to search for C compilers and cleanup test output
5267      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
5268    
5269    checkpoint54d_post (2004/07/27)
5270    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
5271    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
5272      leading to additional shift by 5 days each year of integration
5273       (i.e. leading to considerable offset over the years)
5274    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
5275    o start with no AB and no initial filtering (staggerTimeStep):
5276      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
5277    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
5278      (external loading & cpl import/export stay in forward_step.F)
5279    o update coupling interface to work with new staggerTimeStep
5280    o change MDSIO ptracers_pickup.
5281    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
5282    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
5283    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
5284    
5285    checkpoint54c_post (2004/07/18)
5286    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
5287      this affects (truncation error) output.txt of test-exp:
5288       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
5289    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
5290    o change Qnet to always be the net heat flux, (+upward).
5291      affects (truncation error) output of natl_box exp.: updated
5292    o define the max number of passive tracers in PTRACERS_SIZE.h
5293    o start to test mnc routinely in exp0
5294    o add sea-ice loading (sIceLoad) as a new forcing field.
5295    
5296    checkpoint54b_post (2004/07/08)
5297    o add testreport "-j JOBS" option for parallel builds (tested and pretty
5298       impressive on Altix and Opteron systems)
5299    o diagnostics can now write NetCDF files through the mnc package
5300    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
5301    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
5302    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
5303      affects (truncation error) output of lab_sea & natl_box exp.: updated
5304    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
5305    
5306    checkpoint54a_post (2004/07/06)
5307    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
5308    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
5309    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
5310    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
5311      + internal_wave (shift in writing cg2d_ini_res)
5312    checkpoint54a_pre (2004/07/05)
5313    
5314    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
5315      - modified verification/lab_sea and natl_box_adjoint accordingly
5316    
5317    checkpoint54 (2004/07/02)
5318    checkpoint53g_post (2004/07/02)
5319    o prepare splitting of thermodynamics: store convect.counter in common block
5320    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
5321      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
5322    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
5323    o new parameter "nShapS": allow to treat differently S from T (nShapT)
5324    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
5325    o restore adjointability
5326    
5327    checkpoint53f_post (2004/06/25)
5328    o modifications that affect AIM experiment results (update output.txt):
5329      - no advection of S at top interface Nr (pkg/generic_advdiff)
5330      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
5331    o AIM pkg:
5332      - include stability function into surf.Flux derivative relative to Tsurf
5333      - calculate clear-sky radiation & surface temp. change (for diagnostics)
5334    
5335    checkpoint53e_post
5336    o merged cylindrical coord configuration
5337    o added rotating_tank experiment
5338    checkpoint53e_pre
5339    
5340    checkpoint53d_post (2004/06/14)
5341    o faulks upgraded: re-generate output.txt that have changed:
5342       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
5343    o Added Bryan and Lewis, 1979, vertical diffusivity profile
5344    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
5345    o added Sadourny discretization of Coriolis
5346      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
5347      - re-enabled use of omega3 (useAbsVorticity)
5348    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
5349      vector-invariant equations
5350      - note: does *NOT* yet use same variable visc. for no-slip BC's.
5351    o recoded the lateral boundary conditions for non-hydrostatic w, this time
5352      hopefully without new bugs
5353      - still to do: biharmonic friction for non-hydrostatic w
5354    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
5355    o regenerated output for global_ocean_ebm (using -ieee)
5356    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
5357      of mom_common/
5358      - simple re-arrangement of instructions within computing loop
5359    checkpoint53d_pre (2004/05/21)
5360    
5361    checkpoint53c_post (2004/05/21)
5362    o new version of coupler for AIM+thSIce and Ocean models
5363     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
5364     - land: change Evaporation of snow
5365     - aim with thSIce: fix bug in snow-precip.
5366    o changes to calc_gw.F
5367     - bug fix for w^2 term near the bottom boundary
5368     - (hopefully) improve the lateral slip boundary condtions for use with
5369        partial/looped cells
5370      - because the bug fix changes two verification experiments anyway (exp5
5371        and plume on slope), change the lateral boundary condition from half slip
5372        to the value of no_slip_sides
5373    o ebm package wasnt quite up to the parallel task. Fixed that.
5374    o Adjoint of EBM package + verification
5375      * TLM OK
5376      * ADM not sufficient accuracy yet (needs further testing)
5377    
5378    checkpoint53b_post (2004/05/14)
5379    o Commiting new energy balance model to repository
5380      * package is pkg/ebm
5381      * verif. is verification/global_ocean_ebm
5382      * references are in ebm_driver.F
5383    C      * X. Wang, P. Stone and J. Marotzke, 1999:
5384    C        Global thermohaline circulation. Part I:
5385    C        Sensitivity to atmospheric moisture transport.
5386    C        J. Climate 12(1), 71-82
5387    C      * X. Wang, P. Stone and J. Marotzke, 1999:
5388    C        Global thermohaline circulation. Part II:
5389    C        Sensitivity with interactive transport.
5390    C        J. Climate 12(1), 83-91
5391    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
5392    C        Destabilization of the thermohaline circulation
5393    C        by atmospheric eddy transports.
5394    C        J. Climate 7(12), 1870-1882
5395    o Will need long integration testing.
5396    checkpoint53b_pre (2004/05/14)
5397    
5398    o created pkg/mom_common in preparation for variable viscosity code
5399    o renamed and split ini_mnc_io
5400    o pkg/land: only liquid water can diffuse or run-off
5401    o AIM using land: soil wetness availability account for snow
5402    o added printMapIncludesZeros to EEPARMS namelist
5403    
5404    checkpoint53a_post (2004/05/11)
5405    o restore TAMC compatiility for exf_constants.h
5406      (no usage of _d in .h)
5407    o Additional storing in KPP in an attempt to fix
5408      TAMC problem with adjoint of KPP code.
5409      (no success...)
5410      Identical code works fine with TAF.
5411    o Fixed verification/natl_box_adjoint experiments.
5412      Initial conditions for Experiments 4 and 5 are now
5413      set to "SEAICE_initialHEFF=0", which is more reasonable,
5414      and hence gives results closer to that of Experiment 2.
5415      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
5416    
5417    checkpoint53 (2004/05/06)
5418    o stable checkpoint with up to date adjoint
5419      TLM tests only run for 1st grdchk at the moment. Its unclear if
5420      this is a code problem or a problem with resetting code for g_
5421      variables that is being autogenerated wrong.
5422      Otherwise:
5423       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
5424       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
5425         are both still in chaos following their security messes.
5426    
5427    checkpoint52n_post (2004/05/06)
5428    o various build (mostly genmake2) changes including:
5429      - ability to build/run more easily within Cygwin and MacOS X
5430      - more complicated Makefiles with a stronger dependence on Gnu Make
5431    o pkg/seaice modifications
5432      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
5433        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
5434        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
5435      - changed proxy for geostrophic velocity and updated
5436        verification/lab_sea/results/* accordingly
5437      - removed ADI dynamic solver from pkg/seaice
5438      - replaced all occurrences of 1/CSTICE or 1/CSUICE
5439        they caused a segmentation fault under certain circumstances
5440      - removed unused field WATR
5441    o bug fix in exf-package:
5442      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
5443         now reflect that.
5444    o small fixes in the cal-package:
5445      - set reference date to first of January for the 'model'-calendar
5446      - failing of cal_CheckDate in cal_FullDate now actually results in a
5447        warning
5448    o small modifications in exf-package to increase flexibility:
5449      - change climtempfreeze from a constant to a runtime parameter that
5450        is specified in data.exf_clim (default = -1.9)
5451      - introduce runtime parameter windstressmax (default = 2.0) that is
5452        specified in data.exf
5453    o fix in pkg/thsice:
5454      - update Evap (Tsf changes) to be consistent with Latent heat flux
5455      - maintain snow precipitation unchanged (even if Tsf >=0).
5456     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
5457    
5458    checkpoint52m_post (2004/04/18)
5459    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
5460      this does not change any of the results, because myIter=0 in swfrac always
5461      lead to jwtype=2 (the default anyway), but the call makes little sense
5462      as a default
5463    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
5464    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
5465      atmospheric model (AIM) to use it ; add a "slab ocean" component.
5466    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
5467    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
5468    o extending useSingleCpuIO option to work with new exch2 I/O format
5469      - old-style, missing-tile I/O is still accessible by defining CPP
5470        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
5471    o monitor package can write to NetCDF files and/or STDOUT
5472    o fix re-definition bug in MNC_GRID_INIT_ALL()
5473    o doc/api_reference added
5474      - a framework for building an API Reference Manual using all
5475        the "protex" comments embedded in the code
5476      - see pkg/generic_advdiff, pkg/mnc for examples
5477    o MNC:
5478      - make myThid the last argument for all subroutines
5479      - new default for the grid files: NO halos
5480      - add useMNC and other run-time flags
5481      - separate per-file-group handling of the unlimited dimension
5482      - early initialization of MNC w/ flags read at the eeboot stage
5483        and lookup tables set in initialize_fixed
5484      - write all MNC output to a freshly-created directory
5485    o thermodynamics sea-ice (thsice) is now tested with testreport.
5486    o test exp. advect_cs: use the standard cs32 grid ; update output.
5487    o Added functionality to grdchk:
5488      pick global i,j,k position (or nearest wet) where to perform check.
5489    
5490    checkpoint52l_post (2004/03/11)
5491    o new land formulation:
5492      a) use ground enthalpy as prognostic variable to ensure exact
5493         energy conservation.
5494      b) account for water temperature and for latent heat of freezing
5495         in all processes (rain, run-off, ground storage)
5496      c) compute surface and ground temperature implicitly.
5497    o aim_v23 modification for new land model:
5498      a) Treat separately land / ocean / sea-ice surface fluxes
5499         to allow implicit computation of land & sea-ice surface temp.
5500      b) add snow precipitation.
5501    checkpoint52l_pre (2004/03/11)
5502    
5503    o fix problem (when 1 tile is empty) in min/max monitor.
5504    o fix bug in timeAve (u,vZetatave in common block)
5505    o no restoring terms under ice for pkg/seaice
5506    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
5507    o bug fix for pkg/seaice pickups
5508    o change MNC call locations and add coordinate attributes
5509    o mask vorticity at the corner ; affects global_ocean.cs output
5510    o fix ini_curvilinear_grid ; test CS experiments with mpi
5511    o aim.5l_cs: modify sea-ice fraction input file ; update output
5512    o exf: Adding simple range check routine for exf fields after read
5513    
5514    checkpoint52k_post (2004/02/23)
5515    o removed top-level directory "diags"
5516      - we migrated these functions to pkg/timeave a long time ago
5517    o fixed bug introduced in pkg/monitor
5518    o accuracy ctrlprec = 32 insuffient for gradient checks using
5519      averaged fields (I/O via cost_averages)
5520      -> use ctrl.h in active_file*.F to control I/O precision.
5521    o paramter list of CALL ADTHE_MAIN_LOOP
5522    o added initial do_the_model_io to ecco
5523    o set all ...Freq to zero after cost_final
5524      taveFreq, dumpFreq, pChkptFreq
5525    o MAIN and ECCO differentiability restored
5526    
5527    checkpoint52j_post (2004/02/18)
5528    o fix nchklev in tamc.h for global_ocean...
5529    o Bringing flow and store directives up-to-date
5530    o Really weird thing!
5531      call do_the_model_io from the_main_loop with parameters
5532      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
5533      TAF places a faulty re-call of initialise_varia
5534      after cost_final call which should not be there!
5535    checkpoint52j_pre (2004/02/03)
5536    
5537    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
5538      error messages
5539    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
5540    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
5541      debug output
5542    o modfied mdsio_writefield.F to handle non-global files under exch2
5543    o update AIM Cubed-Sphere exp (aim.5l_cs):
5544      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
5545    o update AIM Equatorial Channel exp:
5546      use standard aim_v23 pkg and change the SST fields to be more realistic.
5547    o globalFile now works with exch2
5548    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
5549      mon_vort3.F to make exch2 friendly with >1 tile per cube face
5550    o limit timeave output for hi-res integrations
5551    
5552    checkpoint52i_post (2004/01/21)
5553    o removed CPP_EEOPTIONS.h from verification/*/code
5554    o updated the tiling for global_ocean_pressure
5555    checkpoint52i_pre (2004/01/20)
5556    
5557    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
5558      the old pkg/aim).
5559    
5560    checkpoint52h_pre (2004/01/20)
5561    o shortened offending lines in exch2_send_rx?.template
5562    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
5563    o genmake2: add build & execute test for NetCDF code
5564    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
5565      old grid files, moved CPP_EEMACROS.h to pkg/exch2
5566    o added useSingleCPUIO flag to monitor.F and mon_out.F
5567    o added temporary hack for sea-ice dynamics on the cube:
5568      metric terms are ignored and it is assumed that
5569      there is no sea-ice on cube faces 1, 2, 4, and 5.
5570    
5571    checkpoint52f_post (2004/01/09)
5572    o added exch2 cube routines to pkg/exch2
5573    o modified hs94.cs-32x32x5 to use it
5574    o added new grid files to hs94.cs-32x32x5
5575    checkpoint52f_pre (2004/01/07)
5576    
5577    checkpoint52e_post (2004/01/07)
5578    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
5579      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
5580    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
5581      to work with implicit vertical advection and AB ;
5582    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
5583    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
5584     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
5585    checkpoint52e_pre (2004/01/02)
5586    
5587    o fix bug in impldiff when Nr=1 or Nr=2.
5588    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
5589    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
5590    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
5591      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
5592    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
5593    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
5594    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
5595    
5596    checkpoint52d_post (2003/12/16)
5597    o re-tiled many expts to allow comparison in multi-processor mode
5598      - updated output accordingly
5599      - changed hs94.128x64x5 to use intial T from file rather than use the
5600        random number generator
5601    o add infrastructure in model routines for fizhi and gridalt packages
5602    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
5603    o changes to permit hi-res, cubed-sphere, configuration
5604      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
5605      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
5606      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
5607        of surface winds for the cube
5608      (A verification experiment, based on global_ocean.cs32x15, but with
5609       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
5610       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
5611       complete with example surface forcing files and matlab scripts to look
5612       at the output and compare it with that of global_ocean.cs32x15.)
5613    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
5614       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
5615       to conform to the common rule.
5616    o check-in the first version of the coupler + interfaces for multi-components
5617       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
5618       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
5619       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
5620       - ocean and atmos. share the same horizontal grid (no interpolation).
5621       - exchanges between component and coupler is done in forward_step
5622    o new verification experiment, cpl_aim+ocn:
5623       coupled ocean - AIM atmosphere on cs32 grid.
5624    
5625    checkpoint52d_pre (2003/12/06)
5626    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
5627    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
5628    
5629    checkpoint52c_post (2003/11/25)
5630    o Fixing OPTIONS files for use of exf:
5631      - ALLOW_ECCO not needed
5632      - ECCO_CPPOPTIONS.h should not be included from
5633        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
5634        as has been the case in the past
5635      - All cal/exf related options are currently set in
5636        single header file. Should remain so until we
5637        agree on a consistent new policy.
5638    o Removed all CPP options for cal package.
5639      cal has no more CPP options.
5640    o modified STOREs in GAD_ADVECTION
5641    o corrected key comp. for passkey
5642    
5643    checkpoint52b_post (2003/11/23)
5644    o new version: "thsice" of thermodynamic sea-ice pkg:
5645     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
5646     - modify fluxes but do not change theta directly;
5647     - light cleaning of bulk_force pkg (still needed with thsice).
5648     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
5649       + output_thsice.txt to test thsice & bulk_force pkgs.
5650    o put back grid & coriolis monitor output.
5651    checkpoint52b_pre (2003/11/23)
5652    
5653    o call "do_the_model_io" at the beginning (=> dump initial state)
5654    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
5655    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
5656      (need info on NUMBER_OF_PTRACERS)
5657    o missing PTRACERS headers in some routines
5658    o default tamc.h in pkg/autodiff supposed to crash
5659      to ensure proper customization
5660    
5661    checkpoint52a_post (2003/11/17)
5662    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
5663      - moved surfaceTendencyTice from pkg/seaice to main code
5664      - subroutine FREEZE_SURFACE now limits only surface temperature
5665        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
5666        => new output.txt for global_ocean.cs32x15 & global_with_exf
5667      - keep the old version of FREEZE for backward compatibility;
5668        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
5669      - corresponding modifs for TAF directives
5670    o added surface flux output variables to TIMEAVE_STATVARS
5671    o time-averaged output for pkg/ptracers
5672    o fix problem with ECCO-related divided adjoint
5673      snapshot file was missing some ad-variables,
5674      but no warning issued by TAF
5675    
5676    checkpoint52a_pre (2003/11/12)
5677    o some bug fixes for #undef REAL4_IS_SLOW
5678    
5679    checkpoint52 = ecco_c52_e35
5680    o after testing adjoints of checkpoint51u_post
5681    
5682    checkpoint51u_post (2003/11/06)
5683    o this is the post-merge tag of the ecco-branch
5684      (needs another clean checkout and re-testing)
5685    o various natl_box_adjoint configs and results
5686      but no input fields
5687    o obcs adjoint not yet merged!
5688    o adding ECCO global 1x1 and 2x2 degree configs
5689    o updated/extended some store directives for seaice
5690    o pkg/ecco now containes ecco-specific part of cost function
5691    o top level routines the_main_loop, forward_step
5692      supersede those in model/src/
5693      previous input data.cost now in data.ecco
5694      (new namelist ecco_cost_nml)
5695    o in ctrl/ cleaned some cross-dependencies and updated CPP options
5696    
5697    checkpoint51t_post (2003/11/04)
5698    o this is the pre-merge tag of the ecco-branch
5699    
5700    checkpoint51s_post (2003/11/04)
5701    o cleanup: removed various obsolete #define-s
5702    o pkg/grdchk
5703      - renamed 'ph-grd 3' to 'grad-res'
5704      - merged from ecco-branch
5705        (remaining bug fixes for obcs gradient checks)
5706      - additional high-precision output for testreport
5707        (grep for 'precision_grdchk_result')
5708    
5709    checkpoint51r_post (2003/11/03)
5710    o cleaned up or removed CPP_OPTIONS.h files
5711    o updated results for some of the tests to reflect the new
5712      optfiles (-ieee: -O0 instead of -O3)
5713    
5714    checkpoint51q_post (2003/10/30)
5715    o cd_code:
5716      - moved cd_scheme.F -> cd_code_scheme.F
5717      - separate read_checkpoint from cd_code_ini_vars.F
5718      - separated cd_code part from write_checkpoint
5719      - updated AD_SOURCE, generated .flow
5720      - added CD_CODE_VARS.h to the_main_loop
5721      - Moving cd_code specific store dir.s to pkg/cd_code
5722    o ctrl package totally restructured
5723      - pack/unpack now optional and decoupled from
5724        xx_/adxx_ I/O
5725      - ctrl_pack/unpack cleaned
5726        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
5727      - confined inclusion of AD_CONFIG.h to where necessary.
5728    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
5729    
5730    checkpoint51p_post (2003/10/30)
5731    o create initial cd_code package
5732      - WARNING: the initialization of fields within packages
5733        is broken because INI_FIELDS (where READ_CHECKPOINT is
5734        called) is called *before* PACKAGES_INIT_VARIABLES.
5735        This seems to be backwards since
5736        1) its important to initially zero the entire field including
5737           the "halo" region
5738        2) zeroing needs to be done *before* reading pickup info
5739           and the pickup call might or might not happen in any
5740           particular run
5741      - this needs an overhaul for R2
5742    o cleanup verification/*/code/GMREDI_OPTIONS.h
5743    o cleanup testreport
5744    
5745    checkpoint51o_post (2003/10/27)
5746    o bringing AD-related verif's up to date with genmake2
5747      - carbon/
5748      - global_ocean.90x40x15/
5749      - hs.94.1x64x5/
5750      - (front_relax/ )
5751    o (more) consistent directory structure for AD-related verif.'s
5752    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
5753    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
5754    o bug fix in find_alpha.F for MDJWF:
5755      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
5756        change rho -> rho-rhoConst
5757      - replace call find_rho to find_rhonum
5758    o initialisation of rFlx extended to full array (required by TAF)
5759      and shifted to thermodynamics
5760    o removed PTRACERS.h in ptracers routine
5761    o added surfacetendencyPtr to S/R parameter list pracers_forcing
5762    o Correcting initialisations for fVerU, fVerV.
5763    o helping TAF to recognize dependency on kUp for
5764      fVerU, fVerV
5765    o Replacing delZ by delR in pkg/ctrl/
5766    checkpoint51o_pre (2003/10/24)
5767    
5768    o undid all of cp51 pending some cleanups and discussion
5769    o added the [#include "AD_CONFIG.h"] statement to all files that need
5770       it for adjoint/tl #defines
5771     o re-worked the build logic in genmake2 to support AD_CONFIG.h
5772     o removed tools/genmake since it no longer works
5773    
5774    checkpoint51n_post (2003/10/23)
5775    o modifications to make FREEZE flux visible to pkg/kpp
5776      - moved surfaceTendencyTice from pkg/seaice to main code
5777      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
5778      - subroutine FREEZE now limits only surface temperature
5779        (this means new output.txt for global_ocean.90x40x15,
5780         global_ocean.cs32x15, and global_with_exf)
5781    o added surface flux output variables to TIMEAVE_STATVARS
5782    
5783    checkpoint51n_pre (2003/10/23)
5784    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
5785    o added [#include "AD_CONFIG.h"] to all files that use the following
5786      defines:
5787      - ALLOW_ADJOINT_RUN
5788      - ALLOW_TANGENTLINEAR_RUN
5789      - ALLOW_ECCO_OPTIMIZATION
5790    
5791    checkpoint51m_post (2003/10/21)
5792    o incorporating changes to get TAMC/TAF working in genmake2
5793      - added new TAMC/TAF targets to the Makefile
5794      - various cleanups related to package handling
5795      - these changes should have no impact on the forward model
5796    
5797    checkpoint51l_post (2003/10/20)
5798    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
5799     - faster algorithm for cal_addtime.F
5800     - higher precision arithmetic, where needed
5801     - pkg/exf *startdate variables changed from calendar date to
5802       model integration time
5803    
5804    checkpoint51l_pre (2003/10/17)
5805    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
5806    o enable to apply restoring on S & T only in a latitude band.
5807    o update output (external_forcing_surf modif. change truncation errors)
5808       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
5809    
5810    checkpoint51k_post (2003/10/16)
5811    o change default to: useNHMTerms=.FALSE.
5812     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
5813       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
5814     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
5815        exp1, ideal_2D_oce
5816     - change data file of oceanic exp (leave the results unchanged for now)
5817       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
5818    o set gravitySign automatically according to the vertical coordinate used
5819      (and change sign: back to "logical" value: +1 when R increases downward)
5820    o added an include barrier to the default CPP_OPTIONS.h and
5821      removed the #include "PACKAGES_CONFIG.h" from it
5822    o fix a bug in mom_fluxform (from chk51j_post)
5823    
5824    checkpoint51j_post (2003/10/10)
5825    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
5826    o adjusted some flow directives (dynamics, thermodynamics)
5827    o added cubed-sphere case to test cost function
5828    o heckpoint_lev?_directives.h now include
5829      pkg-specific directives, whenever those are enabled.
5830    o Moving pkg-specific flow directives to corresponding pkg
5831      Moving pkg-specific differentiation list to corresponding pkg
5832      Moving pkg-specific checkpoint-lev storing to corresponding pkg
5833      ---> conventions are
5834           - pkg_ad.flow
5835           - pkg_ad_diff.list
5836           - pkg_ad_check_lev?_dir.h
5837    
5838    checkpoint51i_post (2003/10/09)
5839    o merge of the branch-genmake2
5840      - knowingly breaks the older genmake
5841      - automatic generation of all ALLOW_${PKG_NAME} defines
5842      - new testreport supersedes older testscript
5843    o large number of package inclusion and header cleanups
5844    checkpoint51i_pre (2003/10/08)
5845    
5846    o new output for adjoin of global ocean vector invariant
5847    o fix for checkpoint of thermodynamic seaice and bulk_force
5848    o Steph gchem various cleanups
5849    
5850    checkpoint 51h_pre
5851    o fixed some single quotes
5852    o modify gchem pkg to be more versatile
5853    o modifications to clean up dic pkg
5854    o add pkg/cfc
5855    
5856    checkpoint51g_post (2003/10/02)
5857    o provide links for ARPACK and ADM*TLM
5858    o start removing verification/vero/
5859    o update AD-related stuff
5860      (in particular some IF-statements in model/src/ routines)
5861    o adding to verification/global_ocean.90x40x15/ adjoint of
5862      vector invariant setup
5863    
5864    checkpoint51f_post (2003/10/02)
5865    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
5866    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
5867      of tracer Green's fucntions for ocean inversion project.
5868    
5869    checkpoint51f_pre (2003/08/07)
5870    o Added on-the-fly spatial interpolation capability
5871        "USE_EXF_INTERPOLATION" to pkg/exf.
5872      - This is a temporary Cartesian-grid hack until
5873        the super-duper ESMF coupler becomes available.
5874      - See verification/global_with_exf/README for usage example.
5875      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
5876        flags and modified pkg/seaice accordingly.
5877    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
5878        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
5879        non-local transport term.
5880    
5881    checkpoint51e_post (2003/08/03)
5882    o pkg/mom_vecinv:
5883      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
5884      - add time-ave diagnostic of vorticity advection.
5885    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
5886    o atmospheric geopotential: - include water vapor effect;
5887                                - use p^kappa in p* scaling.
5888    o land pkg: read initial state from files.
5889    o AIM : add stratospheric drag in the upper level
5890    
5891    checkpoint51d_post (2003/07/18)
5892    o change function ILNBLNK (=> last non-blank char.) to return zero
5893      (instead of the string length) when the string. char is empty
5894    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
5895    o modif's to restore TAMC compatibility
5896      - avoid "_d" constructs in PARAMETER declarations
5897      - avoid interrupting lines by comment lines
5898    o Use cluster local disks for purely local I/O
5899      vs. globally visible disks needed for ctrl stuff
5900      (merged from ecco-branch)
5901      - new active_file_loc... and mdsio_..._loc routines
5902      - affected packages: autodiff, ctrl, grdchk, mdsio
5903    
5904    checkpoint51c_post (2003/07/08)
5905    o introducing integer flag debugLevel
5906      - debLevZero: suppress all output
5907      - debLevA: standard
5908      - debLevB: equivalent to current debugMode=.TRUE.
5909    o introducing pathname variable mdsioLocalDir for mdsio
5910      that can be specified at runtime
5911      (relevant for cluster I/O to local disk)
5912    `
5913    >>>checkpoint51b_post
5914    adjoint of ptracers
5915    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
5916    o extended state in checkpoint_lev?, etc.
5917    o alternative ctrl/cost with tr1 or ptracer
5918    o new comlev1_bibj_ptracers
5919    o new ptracers.flow
5920    o made ptracers_forcing same as external_forcing_s
5921    o added verification for adjoint with ptracers
5922      - adm. grdchk fail so far
5923      - tlm. grdchk OK
5924      - checked tapelev/comlev recomputations: OK
5925    <<<checkpoint51b_pre
5926    
5927    checkpoint51a_post (2003/06/25)
5928    o added code for biogeochemistry package
5929      - new pkgs: dic, gchem
5930      - new subroutine in ptracers
5931    o modify code for biogeo packages
5932      - in model/src and pkg/ptracers
5933    
5934    checkpoint51 (2003/06/24)
5935    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
5936      - autodiff, ctrl, exf, grdchk, seaice
5937      kept separate packages
5938      - cost, ecco, obcs
5939    o updating verification/internal_wave, verification/lab_sea
5940      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
5941    
5942    checkpoint50i_post (2003/06/23)
5943    o Preparing next differentiable checkpoint and sync
5944      of MAIN vs. ecco-branch
5945      - 1st step: this one is differentiable
5946      - 2nd step: next(! not this) checkpoint will have updated packages
5947                  from ecco-branch)
5948    
5949    checkpoint50h_post (2003/06/20)
5950    o new package "land": provide surface BC for AIM.
5951    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
5952    o AIM: use true log-P extrapolation for near surface temp (= as in
5953        F.Molteni paper) ; update aim.5l_cs output.
5954    o New variable in PARM03 for more flexible pickups
5955    o somewhat cleaned package initialisation sequence for
5956      ctrl/ cost/ ecco/ in packages_... routines
5957    
5958    checkpoint50g_post (2003/05/23)
5959    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
5960      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
5961      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
5962        made the default because of faster convergence than ADI
5963    
5964    checkpoint50f_post (2003/05/23)
5965    o exf totally restructured
5966      - replaced all exf_set_ routines by one generic exf_set_gen.F
5967        and made sure it's still differentiable
5968      - split exf_getffields.F into new exf_bulkformulae.F
5969      - exf_inscal_/exf_outscal_ suffixes consistent with field names
5970      - updated adjoint/makefile and relevant verif. accordingly
5971    
5972    checkpoint50f_pre (2003/05/23)
5973     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
5974          + change Evap over land. (update aim.5l_cs output)
5975     o added missing .cvsignores and made uniform across expts
5976     o changed configuration of tidal_basin_2d expt
5977     o added pkg/debug functions for tracing code in fatal crashes
5978     o tidied pkg/monitor to use MONITOR_OPTIONS.h
5979     o new fn in pkg/monitor to stop model if solution grows too big
5980     o removed lots of single quotes from comments
5981    
5982    checkpoint50e_post (2003/05/14)
5983    o make KPP work with PTRACERS
5984     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
5985       nearly a copy of kpp_transport_s
5986     - there is no analogue to SurfaceTendencyS, so I have to use
5987       gPtr(of the surface layer) instead
5988    o add a new platform SunFire+mpi (SunFire 15000) to genmake
5989    checkpoint50e_pre (2003/05/13)
5990    
5991    checkpoint50d_post (2003/05/13)
5992    o change kpp output from multiple-record state files to single-record state
5993      files analogous to write_state.F
5994    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
5995      analogous to the cg2d-related output.
5996    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
5997      so that writing to internal file fn (with length 512) fails.
5998    checkpoint50d_pre (2003/05/12)
5999    
6000    checkpoint50c_post (2003/05/12)
6001    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
6002    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
6003    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
6004    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
6005    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
6006    
6007    checkpoint50c_pre (2003/04/30)
6008    Merging from release1_p13:
6009    o bug fix for pkg/seaice dynamic solver
6010    o Added SEAICE_initialHEFF to pkg/seaice
6011    
6012    checkpoint50b_post (2003/04/17)
6013    o store u*,v* in gU,V instead of in guNm1,gvNm1
6014    o in order to put the momForcing out of the Adams-Bashforth:
6015      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
6016      to timestep.F
6017    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
6018    o re-generate output for highly sensitive test-exp:
6019       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
6020    
6021    checkpoint50b_pre (2003/04/17)
6022    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
6023    o corrected CPP option mismatch in exf_Bulk... functions for case
6024      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
6025    
6026    checkpoint50a_post (2003/03/21)
6027    o Bug fix for merging between c50 and KPP.
6028      ikey was passed from thermodynamics to kpp_calc via
6029      common block rather than being recomputed in kpp_calc,
6030      in contradiction with new key itdkey.
6031      New key ikppkey created, and tamc.h headers updated.
6032    
6033    checkpoint50 (2003/03/08)
6034    - 2nd step of merge with ecco-branch:
6035      merge changes in ecco-branch back into main trunk
6036    - bug fix in find_alpha
6037    - more storing in gmredi_calc_tensor.F, kpp_routines.F
6038    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
6039    - merged some sliced AD support routines
6040    
6041    checkpoint49 (2003/03/06)
6042    merged from ecco-branch:
6043    o exf:
6044      - Enable initialisation of forcing fields to constant
6045        (runtime) values.
6046      - in exf_getffields.F
6047        Reduce i-/j-loop to interior domain, discarding overlaps.
6048        That also fixes wrong TAF-key computations for key_1, key_2
6049        with bulf formulae.
6050      - exf_init.F modify #ifdef for exf_init_evap
6051      - exf_getffieldrec.F, ctrl_getrec.F
6052        The following INT-usages are not safe:
6053          fldsecs  = int(fldsecs/fldperiod)*fldperiod
6054          fldcount = int(fldsecs/fldperiod) + 1
6055        and were modified.
6056    o autodiff: checkpoint_lev...
6057      - updated storing for bulk formulae (some arrays were missing)
6058      - added state for seaice package
6059      - synchronized with main branch
6060    o DIVA:
6061      Modif.s in
6062      - the_main_loop.F
6063      - the_model_main.F
6064      and added cost_final_restore.F cost_final_store.F
6065      o With these changes, it is possible to fully separate
6066        the first forward run to compute the cost function (mdthe_main_loop)
6067        and adjoint runs over individual DIVA intervals (adthe_main_loop)
6068        into separate model executions.
6069        This enables better tuning of DIVA to given queue sizes.
6070      o Loss of cost function value in consecutive DIVA runs is
6071        fixed by storing to 'costfinal' file.
6072      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
6073        beginning/end of adjoint integration is accounted for.
6074      The current changes apply to TAF-1.4.26.
6075      TAF has one remaining bug, requiring one manual change
6076      (see MITgcm manual).
6077    o cal: synchronized between MAIN and ecco-branch
6078    
6079    checkpoint48i_post (2003/03/05)
6080    o Changes to restore differentiability of code w.r.t. previous tag
6081      (mostly adding new routines to make list and replacing
6082      pressure by totPhiHyd).
6083    o Updated and merged grdchk package
6084      - has both ADM and TLM checks
6085      - works for single- and multi-proc.
6086      - output cleaned
6087      - worked successfully for parallel DIVA
6088    o genmake:
6089      - Adding -platform=SP4
6090      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
6091    o Modif. for DIVA:
6092      ctrl_unpack should not be called in intermediate DIVA interval.
6093      (similar thing would apply for active files such as
6094      tbar, sbar, psbar, which should not be reinitialised;
6095      only relevant for ecco-branch)
6096    
6097    checkpoint48h_post (2003/02/28)
6098    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
6099    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
6100    o Added SEAICE_initialHEFF to pkg/seaice
6101    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
6102    
6103    checkpoint48g_post (2003/02/18)
6104    --- EOS:
6105    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
6106      store total Potential in totPhyHyd for diagnostics & EOS.
6107    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
6108    --- Pressure/geopotential gradient:
6109    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
6110    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
6111      ( changes results of global_ocean_pressure )
6112    o NLFS + z-coord.: add eta*Rho' contribution.
6113    o accurate phiHyd when using interface-W at the middle between 2 centers
6114     ( changes results of ideal_2D_oce )
6115    o includes r* 2nd term in potential gradient.
6116    
6117    checkpoint48f_post (2003/02/18)
6118    Merging from release1_p12:
6119    o Modifications for using pkg/exf with pkg/seaice
6120      - improved description of the various forcing configurations
6121      - added basic radiation bulk formulae to pkg/exf
6122      - units/sign fix for evap computation in exf_getffields.F
6123      - updated verification/global_with_exf/results/output.txt
6124    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
6125      (SBO) core products, including oceanic mass, center-of-mass,
6126      angular, and bottom pressure (see pkg/sbo/README.sbo).
6127    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
6128      to avoid negative values in shallow regions.
6129      - updated verification/natl_box/results/output.txt
6130      - updated verification/lab_sea/results/output.txt
6131    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
6132    o Added useSingleCpuIO option (see PARAMS.h).
6133    o Updated useSingleCpuIO option in mdsio_writefield.F to
6134      work with multi-field files, e.g., for single-file pickup.
6135    o pkg/seaice:
6136      - bug fix in growth.F: QNET for no shortwave case
6137      - added HeffFile for specifying initial sea-ice thickness
6138      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
6139    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
6140      kpp_transport_t.F, forward_step.F, and the_main_loop.F
6141    o pkg/seaice:
6142      - adjoint-friendly modifications
6143      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
6144    
6145    checkpoint48e_post (2003/02/12)
6146    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
6147    o dynamics: change definition of computational domain & adapt mom_fluxform
6148      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
6149    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
6150        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
6151        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
6152        global_ocean.90x40x15 global_with_exf global_ocean_pressure
6153        inverted_barometer solid-body.cs-32x32x1
6154      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
6155    
6156    checkpoint48d_post (2003/02/09)
6157    o in preparation for r*:
6158     a) use pre-computed gradient of hydrostatic potential:
6159        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
6160     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
6161        => affects results of glob_oce_pressure (different truncation error)  
6162      update output.txt of ideal_2D_oce & global_ocean_pressure
6163    
6164    checkpoint48d_pre (2003/02/08)
6165    o in preparation for r*:
6166      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
6167      pass the 2 comp. of the grad. as arguments to momentum S/R.
6168      but for the moment, only used if it does not change the results.
6169    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
6170    
6171    checkpoint48c_post (2003/02/06)
6172    Modifications in treatment of initial flux forcing controls
6173    to avoid extra storing of flux fields.
6174    
6175    checkpoint48c_pre (2003/01/21)
6176    o Added tidal_basin_2d experiment (currently 1D!)
6177    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
6178    
6179    checkpoint48b_post (2003/01/27)
6180    o r* coordinate added in #ifdef NONLIN_FRSURF block.
6181     (modification to pressure gradient not yet implemented)
6182    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
6183      (for U & V) that are used for vertical advection of momentum.
6184    
6185    checkpoint48a_post (2003/01/24)
6186    o In preparation for r*, use temp. array to compute vertical transport
6187       in flux-form momentum pkg. => change results of few test-exp.
6188      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
6189                        lab_sea, natl_box & plume_on_slope
6190    
6191    checkpoint48 (2003/01/23)
6192    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
6193    
6194    checkpoint47j_post (2003/01/21)
6195    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
6196    o moved adexch from forward_step to addummy_in_stepping
6197    o added exch in ctrl_map_...
6198    o aveFreq.=0. at end of cost_final to avoid overwrite in
6199      reverse checkpointing loop
6200    o Yet more changes in gmredi:
6201      * adgmredi_calc_tensor
6202        avoiding all recomputation of gmredi_slope_limit
6203      * adgmredi_x/y/rtransport
6204        added flag for excessive storing to avoid recomp. of
6205        u/v/rtans, dTdx/y/z
6206        -> this is not really necessary and very memory-consuming
6207      * adgmredi_slope_psi:
6208        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
6209      * gmredi_slope_limit
6210        re-activated full calculation of taperfct for case 'ac02'
6211    o updating verification/ adjoints of carbon, global_ocean.90x40x15
6212    
6213    checkpoint47i_post (2003/01/13)
6214    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
6215    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
6216      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
6217    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
6218    o gmredi: fix few bugs.
6219    
6220    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
6221    This will be a good checkpoint to plug into the ecco-branch.
6222    o few modif.'s to get latest version adjointed
6223      (mainly kick out code in ini_linear_phisurf)
6224    o modif's to run adjoint with exactConserv
6225    o case GM_BOLUS_ADVEC should be cleaned
6226      S/R gmredi_slope_psi should be cleaned
6227    o verification/carbon now has exactConserv=.TRUE.
6228    
6229    checkpoint47g_post (2003/01/10)
6230    o time-average AIM output: becomes independent from statvars time-average
6231      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
6232    o After TAF bug fix:
6233      Tested adjoint of gmredi package.
6234      Tests were done with checkpoint47 rather than with latest
6235      checkpoint47f_post since the latter is broken for the adjoint
6236      verification/carbon/ contains both ADM and TLM gradient checks.
6237    Here they are, before they get changed/lost/stolen.
6238    Mostly modif.'s to fix numerical sensitivities.
6239    Gradient checks OK for
6240    - GM_taper_scheme:
6241      * clipping
6242      * ac02
6243      * linear
6244      * glw91
6245      * dm95
6246      * ldd97
6247    - GMREDI_OPTIONS:
6248      * GM_VISBECK_VARIABLE_K
6249      * GM_NON_UNITY_DIAGONAL
6250      * GM_EXTRA_DIAGONAL
6251      * GM_BOLUS_ADVEC
6252    in conjunction with data.gmredi parameters to be checked in
6253    in a few minutes under verification/carbon/code/
6254    
6255    checkpoint47f_post (2002/12/28)
6256    Merging from release1_p10:
6257    o modifications for using pkg/exf with pkg/seaice
6258      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
6259        and SEAICE_EXTERNAL_FLUXES
6260      - pkg/exf CPP options EXF_READ_EVAP and
6261        EXF_NO_BULK_COMPUTATIONS
6262      - usage examples are Experiments 8 and 9 in
6263        verification/lab_sea/README
6264      - verification/lab_sea default experiment now uses
6265        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
6266    
6267    checkpoint47e_post (2002/12/27)
6268    o created a tag prior to creating a branch
6269    
6270    checkpoint47d_post (2002/12/16)
6271    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
6272      at the bottom boundary had an erroneous half slip boundary condition
6273    o added bottom drag and no slip boundary condition capabilities to
6274      oceanic pressure coordinates code
6275    o added new verification experiment global_ocean_pressure, this experiment is
6276      also described in the tutorial section of the manual
6277    checkpoint47d_pre (2002/12/16)
6278    
6279    checkpoint47c_post (2002/12/16)
6280    o Added a verification experiment for a global cubed-sphere ocean run
6281      -  verification/global_ocean.cubed32x32x30
6282      -  uses pkg/therm_seaice and pkg/bulk_forcing
6283    
6284    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
6285    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
6286      when using P-coordinate; only implemented for atmospheric config.
6287    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
6288      NOTES: requires option NONLIN_FRSURF to be "#define".
6289    o update advect_xz/results/output.txt (left from checkpoint44g_post)
6290    
6291    checkpoint47b_post (2002/12/05)
6292    Merging from release1_p9:
6293    o pkg/seaice
6294      - removed GOTO's and added taf directives
6295      - double precision constants to reduce the g77 (Linux)
6296        to F77 (SGI) differences reported in release1_p8
6297    o tools/genmake
6298      - added SGI options
6299    o verification/testscript
6300      - updated to that of checkpoint47a_post
6301    o verification/global_ocean.90x40x15/input/eedata
6302      - modified for SGI f77 compatibility
6303    o verification/lab_sea
6304      - added description of sea-ice model
6305      - added missing matlab routines
6306      - added test of thermodynamics parallelization
6307    
6308    checkpoint47a_post (2002/11/23)
6309    o new pkg: aim_v23
6310     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
6311       for now, keep the same surface forcing as before.
6312     - Part-Cell implemented into AIM; check that Heat & Water are conserved
6313     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
6314     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
6315    o add diagnostic of surface correction term in monitor output
6316    
6317    o bulk_force and therm_seaice
6318    - Two packages:  bulk_force (Bulk forcing)
6319      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
6320    - Earlier integration from Stephaine Dutkiewicz
6321      and Patrick Heimbach.
6322    - Two ifdef statements for compile time,
6323       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
6324    
6325    checkpoint47 (2002/11/15)
6326    differentiable version of checkpoint46n_post
6327    o bug fix in quasihydrostaticterms
6328    o * "clean" adjoint code (in terms of extensive recomputations)
6329        can now be obtained for all GMREDI options (i.e. for
6330        - GM_VISBECK_VARIABLE_K
6331        - GM_NON_UNITY_DIAGONAL
6332        - GM_EXTRA_DIAGONAL
6333        - GM_BOLUS_ADVEC )
6334      * However, wrong gradient check problem remains unsolved.
6335      * New CPP options have been introduced for different
6336        tapering schemes
6337    o external_fields_load now part of differentiation list
6338    o pressure needs multiple storing;
6339      would be nice to have store_pressure at beginning or
6340      end of forward_step, e.g. by having phiHyd global (5-dim.)
6341      (NB: pressure is needed for certain cases in find_rho,
6342      which is also invoked through convective_adjustment).
6343    o recomputations in find_rho for cases
6344     'JMD95'/'UNESCO' or 'MDJWF' are OK.
6345    o #define ATMOSPHERIC_LOADING should be differentiable
6346    o ini_forcing shifted to begining of initialise_varia
6347    o Incorporating QNVS line search routines into MITgcm
6348      (this is separate code, and therefore not under pkg)
6349      lsopt/, optim/
6350    o Updated verification/carbon/
6351      - #define GM_VISBECK_VARIABLE_K
6352      - GM_taper_scheme    = 'ldd97'    
6353    
6354    checkpoint46n_post (2002/11/12)
6355    Merging from release1_p8:
6356    o verification/natl_box:
6357      updating new external_fields_load routine
6358    o New package: pkg/seaice
6359      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
6360      The sea-ice code is based on Hibler (1979-1980).
6361      Two sea-ice dynamic solvers, ADI and LSR, are included.
6362      In addition to computing prognostic sea-ice variables and diagnosing
6363      the forcing/external data fields that drive the ocean model,
6364      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
6365      The implied surface heat flux is then stored in variable
6366      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
6367      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
6368      non-local transport term.  Because this call precedes model
6369      thermodynamics, temperature under sea-ice may not be "exactly" at
6370      the freezing point by the time theta is dumped or time-averaged.
6371      N.B.: fairly large differences in accuracy occur across
6372            different platforms/compilers; comparison between
6373            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
6374            generated output gives:
6375       T           S           U           V
6376      C D M    c        m  s        m  s        m  s        m  s
6377      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
6378      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
6379      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
6380    
6381      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
6382    o GAD:
6383      - generated new common blocks to account for call of
6384        same gad routines with differing traceridentities
6385        (needed to modify tracerIdentity indices in GAD.h)
6386      - generated separate common blocks for case useCubedSphereExchange
6387        (Department of Futurology)
6388      - parameter lists to gmredi_?transport: added tracerIdentity
6389      - added new key indices to tamc.h
6390    o external_fields_load:
6391      - added this routine to TAF list
6392      - needed to make some common blocks global and additional storing
6393        along the same lines as exf package (checkpoint_lev?_directives.h)
6394    o exf:
6395      updated external forcing package
6396      - bug fixes carried over from ecco-branch
6397        (missing OBCS_OPTIONS.h in two routines)
6398      - enable easy to use "no forcing".
6399      - added exf I/O for atmospheric loading
6400      - added exf I/O for runoff data
6401      - transfered scaling between exf <-> MITgcm to exf namelist
6402    o Adding new verification experiment global_with_exf.
6403      This verification experiment is almost identical to the
6404      global_ocean.90x40x15 experiment, except that it uses
6405      the exf (and cal) package instead of the
6406      external_fields_load routine (cf README file).
6407    
6408    checkpoint46m_post (2002/11/07)
6409    o modified testscript to return -- when there are no lines of "%MON" output
6410    o added new flag "quasiHydrostatic" for QH mode
6411      and new routine quasihydrostaticterms()
6412    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
6413      New routine: mom_u_coriolis_nh()
6414    o fixed sign of non-hydrostatic metric terms in u and v equations.
6415      Depend on correct sign of gravitySign.
6416    o added work.pc* to .cvsignore in aim directories using ifc
6417    o introduced flag for controllin non-hydrostatic metric terms
6418    o removed gravitySign from PARM04
6419    o switched to g77/ifc from pgf77 in aim experiments
6420    
6421    checkpoint46l_post (2002/11/01)
6422    o made convective adjustment work with pressure coordinates:
6423     - changed the direction of k-loop in convective_adjustment.F for the
6424       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
6425     - adjusted the reference pressure k-index in convective_adjustment.F
6426     - adjusted the convection condition in convect.F (in analogy to
6427       calc_ivdc.F)
6428     - convective_adjustment no longer computes anything on the halos
6429     - removed the warnings about negative salinity from find_rho.F and
6430       find_alpha.F; instead the new routine look_for_neg_salinity, called
6431       at the beginning of find_rho, find_alpha, and find_beta, does a
6432       check of the entire slice, if CPP-option
6433       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
6434    checkpoint46l_pre (2002/10/23)
6435    
6436    checkpoint46k_post (2002/10/23)
6437    o fixed the verification/global_ocean.90x40x15 experiment:
6438     - new bathymetry (the world according to A., JMC, and M.)
6439     - new initial fields and forcing fields (*.bin files)
6440     - new POLY3.COEFFS (for the next release one should switch to a full
6441       equation of state: JMD95P or MDJWF)
6442     - fixed several errors and redundancies in the data file
6443     - experiment uses looped cells
6444     - added matlab directory with diagnostic scripts for plotting of output
6445    
6446    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
6447     - read AIM physics parameters from a file (data.aimphys)
6448     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
6449    
6450    checkpoint46j_post (2002/10/07)
6451    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
6452    o move wVel computation at the end of the time step, in S/R integr_continuity
6453    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
6454    o update timeave pkg for wVel diagnostic.
6455    checkpoint46j_pre (2002/09/27)
6456    
6457    checkpoint46i_post (2002/09/25)
6458    o Clean up AIM package (and keep the results unchanged):
6459      include CPP_OPTION and use IMPLICT NONE in all routines ;
6460      declare all the variables _RL ; use _d 0 for all numerical constants.
6461      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
6462    
6463    checkpoint46h_post (2002/09/25)
6464    o cleaned up the use of rhoNil and rhoConst.
6465      - rhoNil should only appear in the LINEAR equation of state, everywhere
6466        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
6467        and the dynamical equations are all divided by rhoConst
6468    o introduced new parameter rhoConstFresh, a reference density of fresh
6469      water, to remove the fresh water flux's dependence on rhoNil. The default
6470      value is 999.8 kg/m^3
6471    o cleanup up external_forcing.F and external_forcing_surf.F
6472      - can now be used by both OCEANIC and OCEANICP
6473    checkpoint46h_pre (2002/09/18)
6474    
6475     Added code to convert surface volume flux (fresh water) into
6476     a mass flux when using P coordinates in the ocean (OCEANICP).
6477     Note: It assumes you have set rho0=rhoConst=density of fresh water.
6478    
6479    checkpoint46g_post (2002/09/18)
6480    o Include a new diagnostic variable phiHydLow for the ocean model
6481      - in z-coordinates, it is the bottom pressure anomaly
6482      - in p-coordinates, it is the sea surface elevation
6483      - in both cases, these variable have global drift, reflecting the mass
6484        drift in z-coordinates and the volume drift in p-coordinates
6485      - included time averaging for phiHydLow, be aware of the drift!
6486    o depth-dependent computation of Bo_surf for pressure coordinates
6487      in the ocean (buoyancyRelation='OCEANICP')
6488      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
6489        Theta, Salinity, and Pressure in the parameter list. This routine is
6490        presently contained in find_rho.F. This routine does not give the
6491        correct density for 'POLY3', which would be a z-dependent reference
6492        density.
6493    o cleaned up find_rho
6494      - removed obsolete 'eqn' from the parameter list.
6495    o added two new verification experiments: gop and goz
6496      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
6497    checkpoint46g_pre (2002/09/16)
6498    
6499    checkpoint46f_post (2002/09/16)
6500    o Enable tangent linear (forward mode) gradient checks:
6501      - extended active file handling to g_... files
6502      - added TANGENT_SIMULATION to theSimulationMode
6503      - extended grdchk package accordingly
6504    o added tangent linear setup in verification/carbon/code_ftl
6505    o added adjoint setup in verification/front_relax/code_ad
6506    
6507    checkpoint46e_post (2002/09/05)
6508    o Added new equation of state -> MDJWF
6509      - EOS of McDougall et al., 2002, JAOT, submitted
6510      - caveat: the equation of state is only valid for a smaller (more
6511        realistic?) range of values than JMD95P/Z and UNESCO
6512      - added masks to the calculation of pressure in store_pressure
6513      - added more check values for density in check_eos (ini_eos.F), some of
6514        the old check values are out of the range of the MDJWF-eos, so don't
6515        expect perfect matches for those
6516    checkpoint46e_pre (2002/08/19)
6517    
6518    checkpoint46d_post (2002/08/19)
6519    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
6520      'OCEANICP', also initialised field pressure correctly in ini_eos in the
6521      case of pressure coordinates. eosType='JMD95Z' in
6522      combination with buoyancyRelation='OCEANICP' now causes an error.
6523    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
6524      in find_alpha/beta.
6525    checkpoint46d_pre (2002/08/15)
6526    
6527    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
6528      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
6529    
6530    checkpoint46c_post (2002/08/15)
6531    o Changes necessary for ocean in p-coordinates
6532     -  Added new buoyancy relation = 'OCEANICP'
6533     -  Added new parameters = gravitySign (this used to be contained inside
6534        the factor dRdZ which I added when we first switched to R coordinates).
6535     X GM/Redi is not compatible (yet)
6536     X bottom drag and no-slip need to be debugged.
6537    checkpoint46c_pre (2002/08/07)
6538    
6539    checkpoint46b_post (2002/08/07)
6540    o Added new equation of state -> JMD95Z and JMD95P
6541      - EOS of Jackett and McDougall, 1995, JAOT
6542      - moved all EOS parameters into EOS.h
6543      - new routines ini_eos.F, store_pressure.F
6544    o Added UNESCO EOS, but not recommended because it requires
6545      in-situ temperature (see JMD95)
6546    o Modified formatting for knudsen2.f in utils/knudsen2 and added
6547      unesco.f to be used with POLY3
6548    checkpoint46b_pre (2002/07/31)
6549    
6550    checkpoint46a_post (2002/07/31)
6551    o Added (atmospheric) pressure loading
6552      - new field in FFIELDS.h, etc...
6553      - new cpp flag ATMOSPHERIC_LOADING
6554    o Changed hFacC to _hFacC in calc_phi_hyd.F
6555    o Added SHORTWAVE_HEATING to some files for consistency
6556    checkpoint46a_pre (2002/07/13)
6557    
6558    checkpoint46 (2002/07/13)
6559    further merges from release1_p5
6560    o new ctrl package
6561      - adopted from ECCO environment to enable optimization
6562      - added Eliassen Palm fluxes to controls
6563    o added Eliassen Palm flux controls to gradient check package
6564    o cost package
6565      - Compatible with new ctrl package
6566      - added Eliassen Palm cost hooks
6567      - modif's of existing cost functions
6568    o Adjoint-related bug fixes in kpp:
6569      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
6570      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
6571    o autodiff package
6572      - flow directives:
6573        + new for S/R do_the_model_io
6574        + enhanced for S/R checkpoint
6575        + new gmredi.flow
6576      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
6577        disable adcommon.h/g_common.h by default.
6578      - fixed problem for adjoint of global_max
6579    o modified verification/carbon/
6580    o New setup for adjoint of global_ocean
6581    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
6582    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
6583    o incorporated hooks for sponge layer code (external_forcing.F)
6584    
6585    checkpoint45d_post (2002/07/12)
6586    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
6587    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
6588      (affects plume_on_slope "cg2d" output)
6589    o add new parameter deltaTfreesurf for free-surface time stepping
6590    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
6591    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
6592    o change phiMin in exp1 (to agree with documentation)
6593    o add new flags:
6594     - T,S forcing inside/outside Adams-Bashforth
6595     - turn off temp,salt advection and/or forcing
6596     - for each tracer, define internal flag for multiDimAdvection & A-B
6597    o monitor: change definition of KE to check conservation of Energy
6598    
6599    checkpoint45c_post (2002/05/30)
6600    o Removed f90 comments ("!")
6601    o Modified initialisations to enable exf package for MITgcm
6602      (without invoking ECCO_PACKAGE).
6603    o modifications to gradient check package (Martin Losch)
6604      - enable centered differences
6605      - modified format of standard output
6606    
6607    checkpoint45b_post (2002/05/30)
6608    o cleaned exchange calls in cg2d
6609    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
6610    o included CPP option SINGLE_LAYER_MODE in thermodynamics
6611      to configure barotropic setup (Martin Losch)
6612    o moved some initialisations within bi,bj loop in dynamics
6613      (TAF flow dependency)
6614    o in initialise_varia, moved call packages_init_variables
6615      before convective_adjustment_init
6616      (corresponding adjustment of TAF tape initialisation).
6617    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
6618    
6619    checkpoint45a_post (2002/05/01)
6620    o compute Rho over the whole domain (extend iMin,jMin indices)
6621    o specific exchange for X-slice domain (case Ny=1)
6622    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
6623    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
6624    
6625    checkpoint44h_post = checkpoint45
6626    o Fix to restore differentiability:
6627      place at which packages_init_variables is called in
6628      initialise_varia is crucial for reverse control flow.
6629    o modifications in GMRedi to enable stable adjoint
6630      (corresponding modif's in thermodynamics, dynamics)
6631    o added missing hook for sponge layer code in external_forcing
6632    o modified test cost functions
6633    o storing in gad_advection (plus removal of write(0,*)!
6634    o missing headers TR1.h added in convective_adjustment routines
6635    o errorMessageUnit set non-equal zero in eeboot
6636      (conflict on some platforms, e.g. IBM SP3)
6637    o modified carbon verif.
6638    
6639    checkpoint44h_pre (2002/03/14)
6640    o vertical grid option: allow to put the Interface at the middle between
6641      2 cell-centers ; replace delZ in pkg/kpp by drF.
6642    o GM Advective form: Tracers are advected using the residual transport (=
6643      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
6644    
6645    checkpoint44g_post (2002/03/05)
6646    o fix surface correction term in multiDimAdvection (affects plume_on_slope
6647      results) ; ifdef missing in thermodynamics.F
6648    
6649    checkpoint44f_pre,checkpoint44f_post
6650    o added PTRACERS package
6651      This allows an arbitrary number of passive tracers to be integrated
6652      forward simultaneously with the dynamicaly model.
6653      + Implemented so far:
6654        - basic forward algorithm (time-stepping, advection, diffusion, convection)
6655        - I/O and checkpointing
6656        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
6657      + Not implemented so far:
6658        - KPP
6659        - OBCS
6660      + No specific example supplied (yet) but global_ocean.90x40x15 has the
6661        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
6662        line in data.pkg.
6663      + This package is disabled by default since it increases storage.
6664    
6665    
6666    o testscript: added -cleanup option
6667    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
6668                 b) enable to filter 2D fields.
6669    
6670    checkpoint44e_pre,post
6671    o re-wrote convective adjustment to use pre-calculated weights
6672      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
6673      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
6674      Original calls to convect() still in place.
6675    
6676    chkpt44d_pre,post
6677    o added missing EXCLUDE_MONITOR flags
6678    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
6679      (incompatible typ in MIN/MAX expressions caused problems
6680      on IBM SP3)
6681    o in genmake added variable MAKEDEPEND
6682      plus resetting for case SunOS
6683    o added timer_stats.c routine for IBM SP3
6684    o removed variables in dynamics
6685    !!! I forgot to create tag chkpt44d_pre !!!
6686    !!! But chkpt44d_pre = chkpt44c_post    !!!
6687    
6688    o real fresh water flux implemented with non-linear free-surface.
6689    
6690    chkpt44c_pre,post
6691    o few fix (mask in shap_s2, EmPmR in external_field_load,
6692      USE_NATURAL_BCS in solve_for_P);
6693    o add arguments myIter & myTime to S/R obcs_calc & solve_for_P
6694    
6695    checkpoint44b_pre/_post
6696    o merge of relevant stuff from the ecco-branch:
6697      - genmake: removed $S64 overwrite for case SunOS
6698      - pkg/exf: update and corrections for field swapping and obcs
6699      - pkg/ecco: parameter lists for the_model_main, the_main_loop
6700                  harmonized between ECCO and MITgcm
6701      - pkg/autodiff: added flow directives for obcs, mdsio_gl_slice
6702                      updated checkpointing_lev... lists for obcs
6703      - model/src: minor changes in forward_step, plot_field
6704                   added directive for divided adjoint in the_main_loop
6705      - pkg/mdsio: added mdsio_gl_slice
6706    
6707    o check parameters & config (chkpt44a_pre,post)
6708    o OBC and NonLin_FrSurf.
6709    
6710    checkpoint44 (2002/01/18)
6711    o fix bug in mom_vi_del2uv
6712    o select when filters are applied ; add options to zonal_filter (data.zonfilt)
6713    o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
6714    o update AIM experiments (NCEP input files)
6715    o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
6716    o added some stuff for AD
6717    
6718    checkpoint43 (2001/09/28)
6719    o added two new advection tests
6720    o added global 4x4 degree ocean test
6721    o added test of H&S94 with free surface on cube
6722    o some final mods for gradient check, adjoint,...
6723    
6724    checkpoint42 (2001/09/27)
6725      Fixed AD-related problems:
6726    o Store directives up-to-date with re-arranged Adams-Bashforth
6727      (mainly thermodynamics.F)
6728    o New store directives for multi-dim. advection schemes
6729      * new CPP flag ALLOW_MULTI_DIM_ADVECTION
6730      * new common block and key passkey
6731      (mainly gad_advection.F)
6732    o Modified store directives for split of dynamics/thermodynamics
6733      for the case ALLOW_KPP
6734    o Cleaned argument list for timestep_tracer.F
6735    
6736    checkpoint41 (2001/09/27)
6737    o re-formatted/added comments in prologues of key subroutines
6738      to work with protex
6739    
6740    checkpoint40 (2001/09/27)
6741    o moved calc_gs, calc_gt and calc_tr1 back to model/src
6742    o added FLT (floats) package from Arne along with demo. experiment
6743    o re-arranged Adams-Bashforth scheme for tracers to allow easier
6744      implementation of forward-in-time forcing terms
6745    o more mods for non-linear free-surface including new variable
6746    o modified multi-dim method to work on cube
6747    o bug fix in KPP (from DM)
6748    
6749    checkpoint40pre9 (2001/09/27)
6750    o added DST advection schemes
6751    o fix MPI bug on SGI's
6752    o modifications for non-linear free-surface
6753    o fixed conditionals for fixed flow/passive tracer only mode
6754    o added tension/strain form of stress tensor
6755    o changes to commenting of arguments for TAF/TAMC
6756    o added/updated many matlab scripts
6757    o added multi-dimensional advection method for tracers
6758      
6759    checkpoint40pre8 (2001/09/05)
6760    o new package rw/
6761      Added method for dumping intermediate local arrays:
6762      mdsio_writetile - same as mdsio_writefield except works from inside
6763                        bi,bj loop
6764      mdsio_writelocal - same as mdsio_writetile except works for local
6765                         arrays
6766      write_local_r? - higher-level wrapper for mdsio_writelocal
6767      Controlled by diagFreq. Defaults to zero (ie. no dumps)
6768      Example given at end of mom_vecinv.F that dumps some local arrays.
6769    o replaced calc_mom_rhs.F by mom_fluxform.F/mom_vecinc.F to
6770      control flux-form versus vector invariant code.
6771      Switch is runtime flag vectorInvariantMomentum (defaults to false)
6772      or genmake -DISABLE ...
6773    o TAMC-related update to cope with mom_fluxform.F/mom_vecinc.F
6774      (additional storing is now needed for case vecinv;
6775      currently nothing implemented to switch this storing off
6776      in case fluxform is used since no CPP flag available).
6777    
6778    checkpoint40pre7 (2001/08/14)
6779    o bug fix in dynamics.F
6780      calc_viscosity called before k=1,Nr loop.
6781    o added some #ifdef's ALLOW_PASSIVE_TRACER
6782    o cleaned initialisations in ctrl_map_ini
6783      related to TAF
6784    
6785    checkpoint40pre6 (2001/08/13)
6786    o split dynamics into thermodynamics & dynamics
6787    o corresponding split of calc_diffusivity into
6788      calc_diffusivity, calc_viscosity
6789      (kpp_calc_diff, kpp_calc_visc).
6790    o Added diffkr, kapgm to control variables
6791    o bug fix in gmredi_slope_limit for ldd97
6792    
6793    checkpoint40pre5 (2001/07/31)
6794    o proper initialization of Adams-Bashforth time stepping
6795      + uses forward step for very first step of model (iter=0)
6796    o re-generated *all* output since almost all output is modified by this
6797      change (sorry but we've been putting this one off for about 2 years)
6798      + natl_box, aim.5l_Equatorial_Channel and aim.5l_zon-ave were
6799        *not* regenerated since they are already out of date and I don't
6800        want to create the impression that they are suddenly working.
6801    o removed KAP stuff for DEC's
6802    o modified/added many .cvsignore files in */code and */input
6803    o added new expt "solid-body.cs-32x32x1"
6804      + this uses an alternative form of ini_curvilinear_grid.F which
6805        is not necessarily any better than the current one...
6806    
6807    checkpoint40pre4 (2001/07/30)
6808    o added re-initialisations of utrans,vtrans,rtrans in
6809      calc_common_factors which are crucial for TAF.
6810    o extended iMin,jMin range for calc_common_factors,
6811      calc_diffusivity
6812    o added option ALLOW_PASSIVE_TRACER
6813    o a few minor updates and fixes
6814    
6815    checkpoint40pre3 (2001/07/13)
6816    o created calc_gtr1.F for gad package
6817    o split the_main_loop and re-introduced forward_step
6818    o some recomputations of nIter0 for TAMC
6819    
6820    checkpoint40pre2 (2001/07/13)
6821    o Updated to latest branch of AJA, JMC
6822    o Added gradient check package
6823    o Added routines for passive tracer handling
6824    o Added carbon sequestration sensitivity experiment
6825    
6826    checkpoint39 (2001/05/14)
6827     o Modifications and fixes to support TAMC
6828       (mainly missing or wrong directives)
6829     o Corrected common blocks when fooling TAMC to produce adjoint I/O
6830       in addummy_in_stepping
6831     o Updated verification/vero/ (bug fixes in code/, correct pickups in input/)
6832     o Enabled "sliced" (xz-,yz-) exchanges, needed for obcs.
6833     o Included following packages:
6834       cal: calendar
6835       exf: external forcing
6836       ecco: essential routines to control use of cal, exf
6837             (NB: this is not the full ECCO environment)
6838     o disabled some packages by default in genmake
6839    
6840    checkpoint38 (2001/04/10)
6841   o see notes_c37_adj.txt   o see notes_c37_adj.txt
6842   o corrected wrong layer index in external_forcing_t   o corrected wrong layer index in external_forcing_t
6843   o replaced the_main_loop/forward_step by the_main_loop   o replaced the_main_loop/forward_step by the_main_loop
# Line 10  checkpoint38 Line 6845  checkpoint38
6845     (replaced criteria for initial/final state)     (replaced criteria for initial/final state)
6846   o added runtime flag for pre-C35 pickups: usePickupBeforeC35   o added runtime flag for pre-C35 pickups: usePickupBeforeC35
6847    
6848  checkpoint37  checkpoint37 (2001/03/13)
6849   o mdsio.F routine split and packaged in pkg/mdsio   o mdsio.F routine split and packaged in pkg/mdsio
6850     (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
6851      used unless genmake -disable=mdsio)      used unless genmake -disable=mdsio)
# Line 27  checkpoint37 Line 6862  checkpoint37
6862   o Non-Hydrostatic pickup file Pb fixed.   o Non-Hydrostatic pickup file Pb fixed.
6863   o bug with Rigid-lid version (since c35) fixed.     o bug with Rigid-lid version (since c35) fixed.  
6864    
6865  checkpoint36  checkpoint36 (2001/02/20)
6866   o implement Crank-Nickelson barotropic time-stepping   o implement Crank-Nickelson barotropic time-stepping
6867   o recover Time-Average diagnostics   o recover Time-Average diagnostics
6868   o fix Pb in checkpoint (PR#19)   o fix Pb in checkpoint (PR#19)
6869   o AIM become a standard package ; clean unused CPP_kees   o AIM become a standard package ; clean unused CPP_kees
6870    
6871  checkpoint35  checkpoint35 (2001/02/08)
6872   o subtantial rewrite of dynamics.f   o subtantial rewrite of dynamics.f
6873   o allows staggered time-stepping   o allows staggered time-stepping
6874   o packaged obcs, aim (Atmospheric Physics), zonal_filt, shap_filt   o packaged obcs, aim (Atmospheric Physics), zonal_filt, shap_filt
6875   o added bottom drag (linear + quadratic)   o added bottom drag (linear + quadratic)
6876    
6877  checkpoint34  checkpoint34 (2001/01/30)
6878   o Modified exchange routines for correct reverse simulation.   o Modified exchange routines for correct reverse simulation.
6879   o Added verification output to comply with bug fix in impldiff.F   o Added verification output to comply with bug fix in impldiff.F
6880     as of c33 (exp2, natl_box).     as of c33 (exp2, natl_box).
# Line 50  checkpoint34 Line 6885  checkpoint34
6885   o Added routine GLOBAL_SUM_INT to global_sum.F   o Added routine GLOBAL_SUM_INT to global_sum.F
6886   o Added mdsio_gl.F for ECCO purposes.   o Added mdsio_gl.F for ECCO purposes.
6887    
6888  checkpoint33  checkpoint33 (2000/11/30)
6889   o Fixed bug in lower BC in impldiff.F   o Fixed bug in lower BC in impldiff.F
6890   o Fixed confusion about units of forcing arrays in FFIELDS.h   o Fixed confusion about units of forcing arrays in FFIELDS.h
6891     namely Fu,Fv,Qnet,Qsw,EmPmR:     namely Fu,Fv,Qnet,Qsw,EmPmR:
# Line 68  checkpoint33 Line 6903  checkpoint33
6903       possibly use them.       possibly use them.
6904   o Corrected genmake to delete a temporary file during configuration   o Corrected genmake to delete a temporary file during configuration
6905    
6906  checkpoint32  checkpoint32 (2000/11/13)
6907   o Scaling of forcing fields moved from external_forcing.F to   o Scaling of forcing fields moved from external_forcing.F to
6908     external_fields_scale.F, called directly after loading fields.     external_fields_scale.F, called directly after loading fields.
6909   o Surface relaxation terms added to surface tendency fields in   o Surface relaxation terms added to surface tendency fields in
# Line 79  checkpoint32 Line 6914  checkpoint32
6914   o Modifications and bug fixes in KPP package.   o Modifications and bug fixes in KPP package.
6915   o Verification experiment for KPP added (verification/nat_box/)   o Verification experiment for KPP added (verification/nat_box/)
6916    
6917  checkpoint31  checkpoint31 (2000/09/11)
6918   o Packages interface brought in line with defined standard   o Packages interface brought in line with defined standard
6919     -> new routines packages_...F     -> new routines packages_...F
6920     -> changes in initialise_fixed.F, initialise_varia.F     -> changes in initialise_fixed.F, initialise_varia.F
# Line 96  checkpoint31 Line 6931  checkpoint31
6931     - not yet tested for GMRedi.     - not yet tested for GMRedi.
6932     - not yet tested for KPP.     - not yet tested for KPP.
6933    
6934  checkpoint30  checkpoint30 (2000/07/13)
6935   o Updates for OBCs   o Updates for OBCs
6936   o New experiment for test OBCs (internal_wave)   o New experiment for test OBCs (internal_wave)
6937   o New output.txt in verification/exp4/results/   o New output.txt in verification/exp4/results/
# Line 105  checkpoint30 Line 6940  checkpoint30
6940   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.)
6941     and entry for T90 in genmake     and entry for T90 in genmake
6942    
6943  checkpoint29  checkpoint29 (2000/06/21)
6944   o packaged KPP and GM/Redi   o packaged KPP and GM/Redi
6945    
6946  checkpoint28  checkpoint28 (2000/06/09)
6947   o Corrected initialization of hFacMin for difference vertical coordinates   o Corrected initialization of hFacMin for difference vertical coordinates
6948   o Modified calculation of partial cell thickness to more robust algorithm   o Modified calculation of partial cell thickness to more robust algorithm
6949   o config_summary.F: replaced write_1D_... by write_0D_...   o config_summary.F: replaced write_1D_... by write_0D_...
# Line 121  checkpoint28 Line 6956  checkpoint28
6956     included store directives and tape key computations required for TAMC.     included store directives and tape key computations required for TAMC.
6957   o ALL TAMC related changes are between ifdef ALLOW_AUTODIFF_TAMC   o ALL TAMC related changes are between ifdef ALLOW_AUTODIFF_TAMC
6958    
6959  checkpoint27  checkpoint27 (2000/04/10)
6960   o fixed calc_isoslopes() to so that cancellation of terms in tensor   o fixed calc_isoslopes() to so that cancellation of terms in tensor
6961     formulation works properly with variable resolution.     formulation works properly with variable resolution.
6962   o restructured the calling tree between the_model_main() and dynamics()   o restructured the calling tree between the_model_main() and dynamics()
# Line 129  checkpoint27 Line 6964  checkpoint27
6964   o introduced initialization file pSurfInitFile for free surface (cg2d_x)   o introduced initialization file pSurfInitFile for free surface (cg2d_x)
6965     in new routine ini_psurf()     in new routine ini_psurf()
6966    
6967  checkpoint26  checkpoint26 (2000/04/05)
6968   o moved some #ifdef in optional routines to encompass everything   o moved some #ifdef in optional routines to encompass everything
6969     except the argument declarations. This was using up some memory.     except the argument declarations. This was using up some memory.
6970   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 139  checkpoint26 Line 6974  checkpoint26
6974     (macros are now in eesupp/inc/CPP_EEMACROS.h)     (macros are now in eesupp/inc/CPP_EEMACROS.h)
6975   o patch for 2 processor JAM mode   o patch for 2 processor JAM mode
6976    
6977  checkpoint25  checkpoint25 (2000/03/15)
6978   o updates for OBCs and NH   o updates for OBCs and NH
6979   o dramatically reduced memory usage   o dramatically reduced memory usage
6980   o added "JAM" routines for use on Artic network   o added "JAM" routines for use on Artic network
# Line 150  checkpoint25 Line 6985  checkpoint25
6985      an explicit free-surface option)      an explicit free-surface option)
6986   o initial state input files for U and V   o initial state input files for U and V
6987    
6988  checkpoint24  checkpoint24 (1999/08/02)
6989   o Removed some spurious "REAL"s   o Removed some spurious "REAL"s
6990   o Updated KPP to latest version from JPL   o Updated KPP to latest version from JPL
6991   o Added a COS(latitude) in horizontal viscosity   o Added a COS(latitude) in horizontal viscosity
6992    
6993  checkpoint23  checkpoint23 (1999/05/26)
6994   o Added del^4 diffusion for salt and temperature   o Added del^4 diffusion for salt and temperature
6995   o Multiple minor fixes (implicit none's, arguments to global_sum, etc.)   o Multiple minor fixes (implicit none's, arguments to global_sum, etc.)
6996    
6997  checkpoint22  checkpoint22 (1999/05/18)
6998   o Made many small changes: implicit none, format(i5), etc...   o Made many small changes: implicit none, format(i5), etc...
6999   o Introduced KPP mixing scheme (compiles and runs but *not* tested)   o Introduced KPP mixing scheme (compiles and runs but *not* tested)
7000    
7001  checkpoint21  checkpoint21 (1999/05/18)
7002   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)
7003   o Split-up mid-level I/O routines   o Split-up mid-level I/O routines
7004   o Updated input data for experiments 0,1,2,4 and 5   o Updated input data for experiments 0,1,2,4 and 5
7005   o Finally removed the genmake.* scripts (everyone seems happy with genmake)   o Finally removed the genmake.* scripts (everyone seems happy with genmake)
7006    
7007  checkpoint20  checkpoint20 (1999/03/22)
7008   o Tidied up open-boundaries some more   o Tidied up open-boundaries some more
7009   o Added non-hydrostatic code   o Added non-hydrostatic code
7010   o Fixed some input data   o Fixed some input data
7011   o Modified MPI start-up to work in "coupled" context.   o Modified MPI start-up to work in "coupled" context.
7012    
7013  checkpoint19  checkpoint19 (1998/12/15)
7014   o Tidied up directory structure for verification experiments.   o Tidied up directory structure for verification experiments.
7015   o Added new code for open boundaries.   o Added new code for open boundaries.
7016   o Corrected advective terms near boundaries.   o Corrected advective terms near boundaries.
# Line 183  checkpoint19 Line 7018  checkpoint19
7018   o Implemented free-slip/no-slip BCs and del^4 dissipation.   o Implemented free-slip/no-slip BCs and del^4 dissipation.
7019   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.
7020    
7021  checkpoint18  checkpoint18 (1998/11/30)
7022   o Further changes for optional code generation with   o Further changes for optional code generation with
7023     CPP - ugh!     CPP - ugh!
7024    
7025  checkpoint17  checkpoint17 (1998/11/03)
7026   o Beginning to incorporating modularity   o Beginning to incorporating modularity
7027     for supporting atmos. and ocean configs.     for supporting atmos. and ocean configs.
7028   o Small changes for TAMC complinace   o Small changes for TAMC complinace
7029   o New ultra simple test case. Barotropic box   o New ultra simple test case. Barotropic box
7030     configuration "exp0".     configuration "exp0".
7031    
7032  checkpoint16  checkpoint16 (1998/10/28)
7033   o Minor changes to exchange routines to support   o Minor changes to exchange routines to support
7034     accumulation in reverse mode. Adjoint of an     accumulation in reverse mode. Adjoint of an
7035     assignment is an addition.     assignment is an addition.
# Line 202  checkpoint16 Line 7037  checkpoint16
7037     syntax) and by g77 under Linux ( 72 character     syntax) and by g77 under Linux ( 72 character
7038     limit ).     limit ).
7039    
7040  checkpoint15  checkpoint15 (1998/09/29)
7041   Rewrote exchange routines to allow   Rewrote exchange routines to allow
7042   o General tile <-> tile connectivity.   o General tile <-> tile connectivity.
7043   o TAMC reverse mode flag ( is this really needed? )   o TAMC reverse mode flag ( is this really needed? )
# Line 211  checkpoint15 Line 7046  checkpoint15
7046     shmput/shmget, VIA, SYSV shmem and every other cool     shmput/shmget, VIA, SYSV shmem and every other cool
7047     communication method.     communication method.
7048    
7049  checkpoint14  checkpoint14 (1998/09/09)
7050   Consistent isomorphism chages made. These allow dynamical core   Consistent isomorphism chages made. These allow dynamical core
7051   to support both pressure and meters as a vertical coordinate.   to support both pressure and meters as a vertical coordinate.
7052    
7053  checkpoint13  checkpoint13 (1998/07/17)
7054   Release which corrects global_max problem and a couple   Release which corrects global_max problem and a couple
7055   of KGM time-averaging diagnostic errors. Also contains   of KGM time-averaging diagnostic errors. Also contains
7056   a double-gyre experiment setup as well as the baseline   a double-gyre experiment setup as well as the baseline
# Line 230  branch-point-rdot Line 7065  branch-point-rdot
7065   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
7066   we've actually tested it...   we've actually tested it...
7067    
7068  checkpoint12  checkpoint12 (1998/07/08)
7069   Tidy up and added generic genmake script (formerly   Tidy up and added generic genmake script (formerly
7070   configure script).   configure script).
7071   Released to testers.   Released to testers.
7072    
7073  checkpoint11  checkpoint11 (1998/07/02)
7074   Re-arranged initialise() and introduced ini_vertical_grid()   Re-arranged initialise() and introduced ini_vertical_grid()
7075   and ini_masks_etc().   and ini_masks_etc().
7076    
7077  checkpoint10  checkpoint10 (1998/07/01)
7078   Introduced the configure script.   Introduced the configure script.
7079   Separated out the diags package.   Separated out the diags package.
7080   Added template for writing time-averages of tile/intermediate quantities.   Added template for writing time-averages of tile/intermediate quantities.
7081   Updated SIZE.h in exp2 and made the data big-endian.   Updated SIZE.h in exp2 and made the data big-endian.
7082    
7083  checkpoint9  checkpoint9 (1998/06/22)
7084   MPI fix. Filename changes (meta/data). salbin*y stuff.   MPI fix. Filename changes (meta/data). salbin*y stuff.
7085   General tidy-up.   General tidy-up.
7086   SST.bin SSS.bin added to verification/exp2   SST.bin SSS.bin added to verification/exp2
7087    
7088  checkpoint8  checkpoint8 (1998/06/22)
7089   Inludes time-dependant forcing and time-averaging.   Inludes time-dependant forcing and time-averaging.
7090   Works at 4x4 and 2.8125x2.8125 global   Works at 4x4 and 2.8125x2.8125 global
7091    
# Line 260  checkpoint7-4degree-ref Line 7095  checkpoint7-4degree-ref
7095   model etc..   model etc..
7096   Configured for verification/exp2 - 4 degree global, two process.   Configured for verification/exp2 - 4 degree global, two process.
7097    
7098  checkpoint7  checkpoint7 (1998/06/15)
7099   Created by cnh   Created by cnh
7100   Simple 4 degree global simulation   Simple 4 degree global simulation
7101   configuration.   configuration.
# Line 268  checkpoint7 Line 7103  checkpoint7
7103   hydrography, bathymetry etc   hydrography, bathymetry etc
7104   Does not include Heat Flux and E-P   Does not include Heat Flux and E-P
7105    
7106  checkpoint6  checkpoint6 (1998/06/08)
7107   Created by cnh   Created by cnh
7108   merged checkpoint5 with CD and   merged checkpoint5 with CD and
7109   spherical polar code.   spherical polar code.
7110   Still some problems with GM Redi   Still some problems with GM Redi
7111   abd full topography.   abd full topography.
7112    
7113  checkpoint5  checkpoint5 (1998/06/08)
7114   Created by AJA   Created by AJA
7115   contains updates to GM Redi   contains updates to GM Redi
7116   and reordered timestepping loop   and reordered timestepping loop
7117   for Implicit Diffusion.   for Implicit Diffusion.
7118    
7119  checkpoint4  checkpoint4 (1998/05/30)
7120   Created by cnh   Created by cnh
7121   Contains memory saving macros ( _rdxc etc..) for when   Contains memory saving macros ( _rdxc etc..) for when
7122   grid variations are limited.   grid variations are limited.
7123   Contains polynomial coeffs for EOS and knudsen program   Contains polynomial coeffs for EOS and knudsen program
7124   for generation.   for generation.
7125    
7126  checkpoint3  checkpoint3 (1998/05/26)
7127   Created by cnh   Created by cnh
7128   Added extra flags for runtime options   Added extra flags for runtime options
7129   Added this file   Added this file

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