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revision 1.1329 by jmc, Tue Nov 9 00:55:40 2010 UTC revision 1.2025 by mlosch, Wed Jul 16 12:03:54 2014 UTC
# Line 4  $Name$ Line 4  $Name$
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    o pkg/seaice: more clean up
8      - rename TAF common block tapes to be more consistent and remove
9        unnecessary duplicates
10      - add store directives to remove more recomputations,
11        but use smaller tapes (and adjust keys) when
12        SEAICE_LSR_ADJOINT_ITER is undefined. The idea behind this flag is
13        to reduce the memory footprint when the adjoint of the LSR is not
14        required. As of now, defining the flag SEAICE_LSR_ADJOINT_ITER
15        increase 4 common block tapes for 2D field by a factor of
16        SOLV_MAX_FIXED (=500 by default in SEAICE_SIZE.h). For experiment
17        offline_exf_seaice, this means on a linux box with gfortran nearly
18        a factor of 10 (but keep in mind there is mostly seaice code
19        in this experiment)
20        > size mitgcmuv_ad
21        text    data        bss     dec        hex  
22        5100659 1216  220458952  225560827  d71c8fb
23        5339425 1200 1868783272 1874123897 6fb4dc79 (SEAICE_LSR_ADJOINT_ITER)
24        but only a moderate increase of 36% for global_ocean.cs32x15
25        text    data        bss     dec        hex
26        6695027 1648 1014578664 1021275339 3cdf6ccb
27        6695203 1648 1382505320 1389202171 52cd8afb (SEAICE_LSR_ADJOINT_ITER)
28      - note: there are still recomputations in global_ocean.cs32x15 and
29        the gradient agreement changes (gets a little worse)
30      - in general, the AD gradients still are wrong
31    o OpenAD
32      - clean up code_oad/ directories somewhat by moving files
33        dontCompile, dontTransform, keepOriginal to OAD_support/
34    o model/src:
35      - using MOM fluxform and Non-Lin Free-Surf with momDissip_In_AB=F
36        (not currently tested): add dissipation terms before NLFS rescaling of
37        tendencies (previously done after).
38    o pkg/diagnostics:
39      - write stats-diags in ascii file with more digits (same as in monitor).
40    o pkg/down_slope:
41      - drop the bi,bj dimension of argument recip_hFac in S/R DWNSLP_APPLY; with
42        NLFS (not tested), use new recip_hFac value in order to conserve tracer.
43    o model/src:
44      - new file "apply_forcing.F" containing all the code previously in
45        external_forcing.F, but with new argument list: pass, as new argument,
46        the current level tendency array to update (instead of a direct update
47        of the common bloc array). Change the corresponding calls.
48      - add CPP option USE_OLD_EXTERNAL_FORCING (default is undef) to use
49        EXTERNAL_FORCING_U,V,T,S subroutines (for backward compatibility).
50    o pkg/seaice/seaice_lsr, a little bit of clean up
51      - rearrange some code blocks, so that now all calculations for
52        setting up the right-hand-sides done within one single block
53        (I find that easier to read and understand)
54      - rearrange freedrift-code to reduce the number of ifdefs
55      - adjust some indentations and comments
56    
57    checkpoint64z (2014/07/10)
58    o model/src and several pkgs:
59      - change argument list of all S/R called from external_forcing.F and
60        called from ptracers_forcing.F (renamed to ptracers_apply_forcing.F)
61        to pass, as argument, the current level tendency array to update
62        (instead of a direct update of the common bloc array).
63      - change also (in the same way) argument list of PTRACERS_APPLY_FORCING;
64      - rename taueddy_external_forcing.f to taueddy_tendency_apply.F
65    o pkg/seaice/seaice_lsr.F
66      - always initialize local arrays in seaice_lsr_tridiagu/v
67      - add more local tapes to seaice_lsr_tridiagu/v
68      - move storing u/vice(:,:,bi,bj) out of seaice_lsr_tridiagu/v, but
69        keep it in bi/bj loop; this seems to be essential
70      - gradients are still wrong but only by 4-7 orders of magnitude
71        instead of 15 orders of magnitude, lab_sea improves a little
72    o pkg/seaice
73      - (pkg/autodiff) remove storing/restoring of seaiceMaskU/V that
74        generates unnecessary code in seaice_lsr_ad
75      - add more store directives in seaice_lsr to avoid unnecessary code
76        in seaice_lsr_ad
77      - exclude some residual computations in seaice_lsr when
78        ALLOW_AUTODIFF_TAMC is defined in order to avoid unnecessary code
79        in seaice_lsr_ad
80      - add more storing, a new tape (model/src/the_main_loop.F) and
81        another key for SEAICE_LSR_VECTORIZE_ZEBRA (the local keys ilockey
82        and klockey should be checked by a specialist)
83      - modify ( define SEAICE_VECTORIZE_LSR and SEAICE_LSR_ADJOINT_ITER )
84        and update lab_sea after previous changes in pkg/seaice below
85    o pkg/autodiff:
86      - introduce useSmoothCorrel2DinAdMode, SEAICEapproxLevInAd, and
87        viscFacInAd : run time parameters allowing for adjoint switches
88        note : logic for useSmoothCorrel2DinAdMode is in ctrl_readparms.F
89    o pkg/ecco:
90      - introduce cost_gencost_boxmean.F that computes a box mean
91        temperature (for use in adjoint sensitivity studies).
92    o model/src/set_defaults.F : initialize viscFacAdj to 1.
93    o pkg/mom_common/mom_calc_visc.F:
94      - ifdef ALLOW_AUTODIFF then include viscFacAdj factor.
95    o pkg/seaice/seaice_summary.F:
96      - statement for SEAICEadjMODE now in autodiff_readparms.F
97    o pkg/seaice:
98      - remove some store directives and add new ones in an effort to get
99        finally rid off the recomputation warnings. This is successful
100        when SEAICE_VECTORIZE_LSR ***and*** SEAICE_LSR_ADJOINT_ITER are
101        defined (i.e. no extensive recomputation warnings left), but there
102        are still too many recomputations on the solver iteration level
103      - define SEAICE_VECTORISZE_LSR in offline_exf_seaice/code_ad/SEAICE_OPTIONS.h
104      - move definition of MPSEUDOTIMESTEPS into TAMC-block in
105        SEAICE_SIZE.h
106      - add a store directive in S/R seaice_calc_viscosities
107    o pkg/seaice (ITD code):
108      - fix definition of Hlimit for multi-threaded case
109      - use double precision arithmetic to compute Hlimit: this affects results;
110        update output of experiment seaice_itd.
111    o replace content of verification/seaice_itd
112      - instead of a 1D column use the configuration of offline_exf_seaice
113        to test the ice thickness distribution code with ridging
114      - this is a first shot at this experiment
115      - change of some defaults of ridging parameters SEAICEhStar (from
116        100 to 25) and SEAICEmuRidging (from 5 to 3) in seaice_readparms.F
117        and lot of new comments.
118    
119    checkpoint64y (2014/06/20)
120    o pkg/seaice/seaice_reg_ridge.F:
121      - modify the regularization of very small volumes of ice; only check
122        total volume HEFF, and do not apply correction to individual ice
123        classes because that leads to funny patterns in the heat and fw-fluxes
124        into the ocean. Adjust seaice_itd/results/output.txt
125      - replace nITD by SEAICE_multDim in loop-ranges
126    o pkg/exf:
127      - add code to process the case field period = -12. with UV interpolation.
128      - move debug print (formerly active when exf_verbose=T) from EXF_getFFieldRec
129        into S/R that calls it (i.e., exf_set_gen.F, exf_set_uv.F & obcs_exf_load.F)
130    o verification/global_with_exf:
131      - switch all fields period to -12. (was previously untested) in input/data.exf
132        (but keep secondary test ".yearly" unchanged); update the reference output.
133    o pkg/cal:
134      - new calendar type "noLeapYear" for 365 days calendar without any leap year.
135    o pkg/exf:
136      - new integer parameter "exf_debugLev" (default set to main model debugLevel)
137        to replace logical switch "exf_verbose"
138      - report in STDOUT when loading a new record (if exf_debugLev >= 3)
139    o pkg/sbo:
140      - update from Katherine Quinn: evaluate mass directly from density and SSH
141        (budget using Finite Volume method) instead of from bottom pressure.
142      - allow testreport to collect few selected SBO output ; tested in exp.
143        global_ocean.90x40x15 (after updating the results, to include SBO output).
144      - fix some multi-threading issues (in output part).
145    o model/src & most packages:
146      - always call {PKG}_READPARMS even if corresponding use{PKG}=F;
147      - in {PKG}_READPARMS, in case use{PKG}=F: add a call to new S/R
148        PACKAGES_UNUSED_MSG to print a weak warning when parameter file
149        "data.{pkg}" exist ; and leave the S/R (return) just after.
150      - more standard LAND pkg interface (land_init_fixed.F, land_check.F).
151        + call LAND_READPARMS from packages_readparms.F
152    o pkg/seaice:
153      - remove code that resets useThSice in S/R seaice_readparms and
154        replace it by a warning in S/R seaice_check
155      - remove parameter MULTDIM, replace with nITD and runtime
156        parameter SEAICE_multDim (still hard-wired to nITD if
157        SEAICE_ITD is defined)
158    
159    checkpoint64x (2014/05/24)
160    o verification/lab_sea:
161      - update adjoint and TLM output following changes to pkg/salt_plume
162      - un-do the update after putting back local recip_Cp in few places.
163    o pkg/salt_plume: modifications by An Nguyen:
164      - add capability to do brine rejection (salt-plume) as function of
165        volume+tracers (instead of only salinity tracer).
166      - conserve volume by exchanging volume from each kLev to above to
167        accommodate in-coming brine volume
168      - store surface and klev exchanged fraction + volume in 4 new 3-d arrays
169      - switch KPP surf buoyancy due to brine forcing to 3-d
170        (3 more 3-d arrays, 2 for SPforcing[T,S], 1 for boplume)
171      - add salt_plume_volfrac, salt_plume_apply, salt_plume_tendency_apply_t
172      - unrelatedly, also add ad-hoc capability to vary salt_plume scheme
173        in East/West Arctic.
174    o pkg/sbo:
175      - incorporate modifications from Katherine Quinn to enable the use of sbo
176        pkg in ECCO-v4 set-up ; remove SBO-TimeAve output ; add monitor-like
177        output for future testreport verification (unfinished).
178    o pkg/atm_phys:
179      - change diagnostics (AtPh_Trf & AtPh_Qrf) of DARGAN_BETTSMILLER S/R:
180        skip the reseting of t_ref & q_ref to initial t & q ; this preserve the
181        output of S/R CAPECALCNEW (Parcel temp & q) for diagnostics.
182    o pkg/seaice
183      seaice_calc_ice_strength.F: modify expression to avoid divisions
184        (affects truncation)
185      seaice_do_ridging.F: clean up the insectarium
186      - fix a bug that was compensated by areaScaling (-> remove areaScaling code)
187      - added SEAICEsnowFracRidge to redistributed snow (2nd bug)
188      - set closing/openingRate to zero where no extra iteration is need (3rd bug)
189      - add some debugging information and error messages (warnings)
190    o model/src: modifications relatd to atmosphere p*:
191      - Switch to more accurate p* coordinate slope term (calc_grad_phi_hyd.F)
192      - With p* or Sigma-P, use constant reference Pot.Temp (thetaConst) instead
193        of vertical profile tRef in geopotential background and anomaly.
194      - Acount for true p* correction in theta <-> T conversion in pkg/aim_v23
195        and pkg/atm_phys.
196      - Update FWD output of experiments: aim.5l_cs (x2), fizhi-cs-32x32x40,
197        fizhi-cs-aqualev20, fizhi-gridalt-hs, tutorial_held_suarez_cs, cpl_aim+ocn.
198    o pkg/seaice: fix a bug in seaice_prepare_ridging.F, forgot a sqrt
199    o pkg/ptracers: compute ptracer source/sink due to linear free surface.
200        not used right now, but can be used in BGC packages to fix conservation.
201    o pkg/dic, pkg/gchem: move tracer_meanarea to gchem, so it can be used by
202        other packages too.
203    o pkg/seaice/seaice_calc_ice_strength.F: replace SEAICE_rhoSnow by
204        SEAICE_rhoIce in the Rothrock (1975)-type strength calculations (bug fix)
205    o model/src:
206      - since we have several heat capacity (even in model/src), define "recip_Cp"
207        as local variable (no longer in common block) to avoid any confusion.
208      - add thetaConst in PARAMS.h (to be used with pStar or sigma-P coords).
209    o pkg/exf:
210      - from Jeff Scott: add option (#define EXF_CALC_ATMRHO) to calculate local
211        air density as function of air Temp, Humidity and atm pressure.
212    
213    checkpoint64w (2014/05/02)
214    o verification:
215      - update output_adm.txt files for experiment global_ocean.cs32x15 (seaice &
216        seaice_dynmix) and lab_sea (primary test & noseaicedyn): moving/changing
217        code from seaice_growth.F & seaice_advdiff.F to new ridging routines
218        seaice_reg_ridge.F seaice_do_ridging.F affects AD gradient
219        (down to 8-7 matching digits for global_ocean and 5-6 for lab_sea).
220    o model/src: for atmosphere in p* coords:
221      - store factor rStarFacC**atm_kappa (= pStarFacK) in common block
222      - implement more accurate p* coordinate slope term (in calc_grad_phi_hyd.F),
223        but not yet activated.
224    o pkg/seaice: fix restart problem for ITD with new ice strength parameterisation:
225      - move computation of opnWtrFrac = 1-AREA to before computing ice strength
226      - this changes the results (but not for any verification experiment, because
227        none tests this), but avoids having an extra field in the restart files
228    o pkg/seaice: remove global variable TICE (not needed)
229      - replace by TICES or local variable where necessary (cost_seaice_test,
230        seaice_diagnostics_state)
231      - move copying TICE to TICES from seaice_check_pickup to seaice_read_pickup
232      - use specific read/write routines for reading and writing individual leves
233        of a multilevel field
234    o pkg/ctrl & model/inc:
235      - move additional anomaly fields of control vars (related to options:
236         ALLOW_KAPGM_CONTROL, ALLOW_KAPREDI_CONTROL and ALLOW_BOTTOMDRAG_CONTROL)
237        from DYNVARS.h into new header file: CTRL_FIELDS.h
238    o pkg/seaice: some small modifications to the ridging code
239      - make fw2ObyRidge a global variable and add the freshwater flux to
240        seaice_growth
241      - pass actual thickness from seaice_prepare_ridging, so that it is
242        computed only in one place and compute it in the same way as in
243        seaice_growth
244      - initialise more fields in seaice_do_ridging that where cause floating
245        point exceptions over land
246    o pkg/seaice: preparations for ridging code and first real ridging code
247      - move most of "PART 1" of S/R seaice_growth into a new and separate
248        S/R seaice_reg_ridge that will both regularize the state variable after
249        advection call the actual ridging routine;
250      - requires to make 5 fields global fields: d_HEFFbyNEG,d_HSNWbyNEG,
251        d_AREAbyRLX,d_HEFFbyRLX,saltFluxAdjust;
252      - remove ridging code from seaice_advdiff
253      - clean up remaining part 1 of seaice_growth in an attempt to make it
254        more readable (this is probably subjective)
255      - call seaice_itd_redist once in the initialisation phase to have the initial
256        conditions in the correct category
257      - finally: add new ridging routine for ITD code
258    
259    checkpoint64v (2014/04/11)
260    o pkg/ecco:
261      - add runtime parameters mdt[start,end]date[1,2]
262      - rename variable "tpmean" as "mdt" and "topexmeanfile" as "mdtdatfile"
263    o pkg/seaice:
264      - make deltaC a global variable, so that it can be used in ridging code
265      - first step towards ridging: introduce new routines that compute
266        ice strength based on ridging parameters
267      - add diagnostic for HSNOWITD
268      - add opnWtrFrac as a global variable (required for ridging scheme)
269    o pkg/salt_plume + pkg/seaice/seaice_growth.F
270      - add SALT_PLUME_IN_LEADS flag to activate pkg/salt_plume only when ice
271        AREA exceeds a threshold (code contributed by I.Fenty in 2011)
272    o verification/hs94.1x64x5:
273      - leave ALLOW_AUTODIFF_TAMC undefined in code_oad/AUTODIFF_OPTIONS.h
274      - do not use ECCO_CPPOPTIONS.h anymore for TAF & OpenAD Adjoint tests.
275    o autodiff:
276      - Start to include explicitly AUTODIFF_OPTIONS.h, COST_OPTIONS.h,
277        and CTRL_OPTIONS.h in src files (to enable to skip the ECCO_CPPOPTIONS.h)
278        For now, only in pkgs used in verification/hs94.1x64x5.
279      - Replace ALLOW_AUTODIFF_TAMC by ALLOW_AUTODIFF (except for tape/storage
280        which are specific to TAF/TAMC).
281      - Replace ALLOW_AUTODIFF_OPENAD by ALLOW_OPENAD:
282        since ALLOW_OPENAD is defined in PACKAGES_CONFIG.h (any time pkg/openad
283        is compiled), this simplifies/reduces which *_OPTIONS.h file to include.
284      - OpenAD: change Makefile to generate the appropriate AD_CONFIG.h when
285        building mitgcmuv_ad (make adAll).
286    o pkg/ecco:
287      - cost_gencost_seaicev4.F:
288         reformulate proxy cost as function of sst and local param SEAICE_freeze
289         change cost names from siv4-[sst,vol] to siv4-[deconc,exconc]
290      - add stop statement if old names siv4-[sst,vol] are used
291      - add snapshots + cost reports for atmospheric longwave
292      - remove factor 0.1 in front of wtau[u,v]
293      - replace never used flag ALLOW_TMI_COST_CONTRIBUTION with
294         ALLOW_TMI_SST_COST_CONTRIBUTION
295    o pkg/atm_phys:
296      - add some diagnostics for Short-wave and for convection S/R.
297    o pkg/seaice/seaice_growth:
298      - fix a bug in the lateral melt parameterization for SEAICE_ITD
299        in seaice_growth; tempFrz needs to be computed inside the i/j-loop
300      - rearrange loop order for better vector code in the same code block
301      - rewrite the floeDiameter formula to have fewer divisions
302      -  (miraculously) none of this changes the results of seaice_itd
303    o pkg/smooth:
304      - move param smooth2Ddiffnbt to pkg/ecco
305    o pkg/salt_plume:
306      - salt_plume_frac.F:
307         clean up local param names
308         reformulate (1-frac) to frac; original 1-frac was based on swfrac code
309    o pkg/rw:
310      - add RS version of S/R READ_MFLDS_LEV.
311    o pkg/streamice:
312      - fix the restart test by writing/reading pickup_streamice files.
313    o pkg/seaice:
314      - refine checks for jfnk-related parameters
315      - comment out if statement with SEAICEuseIMEX parameter as long as there
316        is no IMEX code to avoid confusion and surprises
317    
318    checkpoint64u (2014/03/07)
319    o verification/MLAdjust:
320      - rename secondary test suffix:
321         1.leith  -> A4FlxF  + switch to flux-form & add side-drag
322         0.leithD -> AhFlxF  + switch to flux-form
323         0.smag   -> AhVrDv  (use Vorticity-Div. visc form) + add side-drag
324         0.leith  -> AhStTn  (use Strain-Tension visc form) + add side-drag
325    o pkg/mom_vecinv:
326      - remove unused arguments from S/R MOM_VI_HDISSIP & MOM_HDISSIP (as it used
327        to be before mom_calc_visc.F)
328      - skip the call to MOM_CALC_TENSION & MOM_CALC_STRAIN if not needed.
329      - add 2nd copy of vort3 & strain that knows about lateral BC (free/no slip):
330        this is simpler for the adjoint and for diagnostics.
331    o model/src + pkg/momentum:
332      - add input files for  2-D additional Western and Southern cell-edge wall
333         (e.g., to add "thin-wall" where it is =1).
334      - fix sideDrag option for thin-walls with Non-Lin Free-Surf
335        using 2nd hFacZ that is computed from initial (fix domain) hFac
336      - known limitations of thin wall implementation: not yet coded for sigma
337        coords; not working with CD-scheme neither.
338    o pkg/seaice:
339      - rename recently introduced parameters from (wrong name) AB to
340        BDF (backward difference time discretisation)
341      - retire runtime parameters SEAICEuseAB2, SEAICE_abEps
342    o tools/adjoint_options:
343      - remove setting of "OPENAD=true" (now set by command line "genmake2 -oad")
344    
345    checkpoint64t (2014/02/01)
346    o pkg/ecco
347      - add compile flag ALLOW_GENCOST_TIMEVARY_WEIGHT in ECCO_OPTIONS.h and
348        runtime logical flag gencost_timevaryweight to read daily sea-ice sigma
349      - replace hard-coded record number and period which only work for monthly
350        with read-in runtime param that works for other periods (month,day,year)
351    o pkg/thsice
352      - corrected store directive fixes thsice adjoint gradient checks
353    o genmake2 & testreport:
354      - add genmake2 option "-oad" to generate a Makefile for OpenAD built and
355        in this case, use tools/adjoint_options/adjoint_oad as default AD optfile.
356        Update testreport accordingly. No need to set "export OPENAD=true"
357        in adjoint_options/adjoint_oad anymore (will be removed later).
358    o pkg/shelfice:
359      - put T & S shelfice forcing into model surfaceForcing_T,_S (for now,
360        only if SHELFICEboundaryLayer=F); Change model/src/external_forcing.F
361        so that surface forcing applies to k=kSurf if using pkg/shelfice.
362    o pkg/ctrl, pkg/grdchk, pkg/ecco:
363      - Changes to make GENARR more modular (i.e. invisible if not used)
364    o model/src/temp_integrate.F and salt_integrate.F
365      - re-include store directives that were removed on Dec 27th.
366    o model/src/external_forcing_surf.F
367      - add storage directives for EmPmR and PmEpR to avoid recomputation of
368        seaice_model in the adjoint that is problematic when seaice_model is
369        turned off in the adjoint. The resolved issue dated back to July when
370        EXTERNAL_FORCING_SURF call was moved.
371        Update global_ocean.cs32x15/*/output_adm.seaice_dynmix.txt accordingly.
372    o pkg/exf/exf_check.F
373      - fix a small bug again (originally found by Wentao Liu, now found again)
374      - streamline error output
375    o pkg/streamice and aim_v23:
376      - replace a few "_EXCH_XY_RL (" with "_EXCH_XY_RL(", so that
377        Apple's /usr/bin/cpp knows what to do:
378        Apple LLVM version 5.0 (clang-500.2.79) (based on LLVM 3.3svn)
379        Target: x86_64-apple-darwin13.0.0
380    
381    checkpoint64s (2014/01/05)
382    o tools/adjoint_options:
383      - switch to fastopt.net TAF server (instead of default fastopt.de) for
384        AD optfiles adjoint_diva & adjoint_f95 (similar to adjoint_default).
385    o model/src:
386      - remove some unnecessary TAF storage directives in forward_step.F and
387        in dynamics.F (note: not always removed by TAF, e.g., double storage
388        of kappaRU,kappaRV in former version of dynamics.F).
389    o model/src & pkg/ptracers:
390      - call directly GAD_IMPLICIT_R & IMPLDIFF + DWNSLP_APPLY from temp_integrate.F
391        salt_integrate.F and ptracers_integrate.F (instead of from thermodynamics.F)
392        and remove ptracers_dwnslp_apply.F & ptracers_implicit.F
393      - call MATRIX_STORE_TENDENCY_EXP for each tracer (in ptracers_integrate.F)
394      - add fZon & fMer as output argument of S/R GAD_CALC_RHS.
395      - update TAF AD-output of experiments global_ocean.90x40x15 (13 for AD-grad).
396    o useSingleCpuInput separates single-CPU input from single-CPU output;
397        for now only implemented for in exf_interp_read.F
398    o verification/advect_xy:
399      - fix missing EXCH call in local version of ini_salt.F and update output.
400    o momentum diagnostics:
401      - fix which deltaT is used in Total-Tendency diagnostics.
402      - fix typo in diagnostics for momentum tendency from AB.
403    o pkg/seaice/seaice_lsr.F: fix an initialisation bug for the
404        SEAICE_VECTORIZE_LSR_ZEBRA option that lead to NaNs on a NEC-SX8
405    
406    checkpoint64r (2013/12/08)
407    o verification/*/results:
408      - Update reference output of experiments that were passing with just 13 digits
409         (make it easier to detect future changes in results)
410    o model/src & pkg/ptracers:
411      - move calls to GAD_ADVECTION (Multi-Dim advection) from thermodynamics.F to
412        inside temp_integrate.F and salt_integrate.F and from ptracers_advection.F
413        to inside ptracers_integrate.F ; remove ptracers_advection.F
414    o coupling interface pkgs:
415        [atm_compon_interf, ocn_compon_interf & atm_ocn_coupler]
416      - change the config check to test the agreement of Ocean Depth
417        with ATM land/sea mask (instead of ATM orography);
418      - send to coupler the number of coupler time-steps to do for this run:
419        this allows to check for consistency and don't need anymore to be
420        specified in parameter file "data";
421      in coupler:
422      - check consistency of RunOff map versus Ocean Depth and ATM land/sea mask.
423      - improve report to log-file of config setting (pass log-file unit to few S/R)
424    o pkg/compon_communic:
425      - add coupling send/receive for non-tiled integer vector;
426      - add S/R to check and stop if any proc has an error (similar to
427        eesupp/src/stop_if_error.F but single thread and across Comm_World).
428    o pkg/exch2:
429      - in exch2*_get_rx[1,2]: use new list "W2_tileIndex" to replace search
430        through list of all tiles my proc owns.
431    o model/src:
432      - AUTODIFF only: in calc_adv_flow.F, recompute rTransKp (instead of copying
433        from rTrans) to simplify dependencies (no need to store rTrans anymore in
434        calling S/R); this affects AD results at machine truncation level:
435        update AD-output (TAF) of experiments: 1D_ocean_ice_column,
436        bottom_ctrl_5x5 & obcs_ctrl (12 digits for AD grad, same FWD grad).
437    o tools/build_options:
438      - simplify Warnings options (-ieee & -devel cases) in linux_amd64_gfortran
439    o coupling interface pkgs:
440        [compon_communic, atm_compon_interf & ocn_compon_interf]
441      - move declaration of local array "ibuf" out of header file "CPLR_SIG.h"
442        to each S/R that needs it; remove un-used variables.
443      - change component tile registration (cpl_register.F in both compon_interf
444        and mitcomponent_tile_register.F) to pass the full list of tiles
445        information (including bi,bj) in 1 vector (instead of in a bi,bj matrix).
446      - with pkg/exch2: adopt the same convention used for I/O to define mapping
447        towards coupler global array (unless W2_useE2ioLayOut=F):
448         a) can now use different tiling between atm & ocn comp.
449         b) no needs to modify the run-Off map when changing tiling (was needed
450            even if using the same tiling between atm & ocn).
451         c) will allow to run with blank-tiles in 1 component (e.g., for ocean
452            full land tiles); not yet tested.
453      - check for valid mapping from comp. tile to coupler global array
454      - improve report of tile registration results to log file.
455    o pkg/exch2:
456      - in eesupp/src/eeboot.F: move call to W2_EEBOOT before Coupler
457        tile-registration (CPL_REGISTER);
458      - activate (un-comment) definition and setting of "W2_tileIndex" list to
459        store the local bi,bj indices of each tile;
460      - also print bi,bj in local report to log file;
461      - fix pkg/debug/debug_cs_corner_uv.F for the case nSy > 1 (left from
462        Jun 2009 modif of pkg/exch2).
463    o testing on baudelaire:
464      - run 2 tests at a time: no significant slow down (since enough cpu) and
465        get the full set of test done earlier
466      - switch the ifort test to "-devel" ; run the OpenAD test everyday.
467    o model/src/thermodynamics.F and routines called from it:
468      - pkg/gmredi: gmredi_residual_flow.F (replacing gmredi_calc_uvflow.F &
469        gmredi_calc_wflow.F) to update eulerian velocity (input) into residual
470        velocity (outp) by adding bolus velocity.
471      - model/src: calc_adv_flow.F (replacing calc_common_factors.F) to compute
472        mass transport from velocity + lateral grid cell area
473      - rename calc_gt.F to temp_integrate.F (includes call to TIMESTEP_TRACER)
474      - rename calc_gs.F to salt_integrate.F (includes call to TIMESTEP_TRACER)
475     in thermodynamics.F
476      - remove k from thermodynamics.F and move it to temp_integrate.F
477        salt_integrate.F and ptracers_integrate.F (now done inside the tracer
478        loop).
479      - compute locally (in thermodynamics.F) 3-D velocity field that is used to
480        advect tracers; pass it as argument to GAD_ADVECTION, GAD_SOM_ADVECT,
481        PTRACERS_ADVECTION, TEMP_INTEGRATE, SALT_INTEGRATE, PTRACERS_INTEGRATE,
482        GAD_IMPLICIT_R and PTRACERS_IMPLICIT
483      - update AD-output (TAF & OAD) of experiments: 1D_ocean_ice_column,
484        global_ocean.90x40x15, tutorial_global_oce_biogeo and
485        tutorial_tracer_adjsens (+ TLM output).
486    o tools/OAD_support and (verification/*/) code_oad:
487      - OAD_support/cb2mGetModules.csh: add PACKAGES_CONFIG.h in header file to
488        module conversion ; remove unneeded CPP_EEOPTIONS.h.
489      - code_oad/CPP_OPTIONS.h: remove PACKAGES_CONFIG.h and use a more standard
490        version (closer to model/inc/CPP_OPTIONS.h).
491    o model/src:
492      - remove parameter "useOldFreezing" from PARAMS.h and push it to the
493        retired list of parameters (routine FREEZE has been replace by surface
494        freezing (10.yrs ago) and by pkg/frazil (interior freezing).
495    o pkg/gmredi:
496      - add option (GM_CALC_TRANSP_FROM_VEL) to compute transport directly from
497        velocity (same scheme but affects machine truncation) for GM_AdvForm.
498      - update output of FWD experiments: front_relax.bvp,
499        global_ocean.90x40x15.dwnslp, global_ocean.cs32x15 and ideal_2D_oce.
500    
501    checkpoint64q (2013/11/17)
502    o verification:
503      - generate new output on baudelaire (gfortran, -ieee) for OpenAD experiments
504        tutorial_global_oce_biogeo and global_ocean.90x40x15.
505      - generate new output (growth & melt) for seaice_itd experiment after
506        updating the input pickup_seaice files (previously wrong).
507    o pkg/cost:
508      - define a "final cost function" for each tile, and use GLOBAL_SUM_TILE_RL
509        (instead of _GLOBAL_SUM_RL) to get the final cost from all procs & threads:
510        o this fixes global-sum value if multi-threads (since GLOBAL_SUM_RL
511          cannot be applied to var in common block).
512        o allows to get results independent of tile-per-proc setting (if using
513          slower GLOBAL_SUM_SEND_RECV option).
514      - update accordingly: seaice_cost_final.F, shelfice_cost_final.F,
515        thsice_cost_final.F and ecco_cost_final.F (this one affects lab_sea
516        forward gradients: update output).
517      - update */code_oad/externalDummies.F by adding dummy GLOBAL_SUM_TILE_RL
518        S/R and, for most exp., also comment out GLOBAL_SUM_R8.
519    o pkg/mom_common:
520      - move to pkg/mom_common and model/src (previously in tutorial_deep_convection
521        code) 2nd version of isotropic 3-D Smagorinsky code interface: strain and
522        viscosity are locally declared in dynmics.F and pass as argument to CALC_GW;
523        ensure that all field value that are used are set.
524    o tutorial_deep_convection (smag3d):
525      - add missing scaling in mom_calc_smag_3d.F;
526      - set smag3D_coeff in input.smag3d such that results do not change.
527    o pkg/dic:
528      - change dic_cost.F to compute cost on each tile first and then apply
529        GLOBAL_SUM_TILE_RL: this affects forward gradient of AD experiments
530        tutorial_dic_adjoffline & tutorial_global_oce_biogeo; update output.
531      - remove kLev argument and use GLOBAL_SUM_TILE_RL in tracer_meanarea.
532    o eesupp/src & pkg/mdsio:
533      - remove gather/scatter_vector.F (from eesupp) and mdsio_read/writevector.F
534        (from pkg/mdsio) since they are no longer used for tape IO.
535      - move simple C subroutine "setdir.c" from pkg/compon_communic to eesupp/src
536        (+ keep a copy in pkg/atm_ocn_coupler).
537    o verification/isomip:
538      - split domain in 8 squared tiles (instead of just 2) for FWD, AD & OAD tests.
539    o tools/build_options:
540      - optfile linux_amd64_ifort11, fast (no ieee) case:
541        to get a working restart for all experiments, add "-fp-model source"
542        to FOPTIM (also remove "-opt-streaming-stores auto" <- this is the default).
543    
544    checkpoint64p (2013/10/20)
545    o pkg/autodiff:
546      - adread_adwrite.F: when type and length do not match ALLOW_AUTODIFF_WHTAPEIO
547        criteria, return to simple (default) tape IO format.
548    o pkg/mdsio (+ eesupp/src):
549      - rewrite/simplify tape-IO S/R (new S/R MDS_READ/WRITE_TAPE replace
550        previous MDSREAD/WRITEVECTOR) with 2 array argument from each type (R4/R8);
551      - fix globalFile and singleCpuIO options using simpler global mapping.
552      - new pairs of scatter/gather vector S/R (one for each type, generated from
553        template) corresponding to simpler global mapping.
554      - adread_write.F: switch to new S/R (but leave old calls commented) and write
555        to globalFile when parameter globalFiles is set to True.
556      - switch on useSingleCpuIO in AD experiments: global_ocean.90x40x15 & isomip.
557    o pkg/autodiff:
558      - adread_adwrite.F: add a hack for RS arrays (when RS=real*4);
559        with ALLOW_AUTODIFF_WHTAPEIO defined, since corresponding (real*4) is
560        missing, just add a STOP if array type do not match.
561    o pkg/exf:
562      - to allow to use seaice-fraction from pkg/exf in other pkgs than pkg/seaice:
563         rename CPP option EXF_ALLOW_SEAICE_RELAX to EXF_SEAICE_FRACTION
564         and rename array obsSIce to exf_iceFraction.
565    o tutorial_deep_convection:
566      - add 1rst version of isotropic 3-D Smagorinsky code (from Louis-Philippe),
567        for now all in this exp. code dir.
568      - add secondary test using Smag-3D viscosity (keep very low backgroud visc for
569        testing) and flux-limter advection scheme for Temp. (no explicit diffusion).
570    o eesupp/src:
571      - added SINGLE_DISK_IO option because reading of parameter files on
572        very large number of processors did not work with existing set-up
573    
574    checkpoint64o (2013/09/25)
575    o pkg/atm_phys & atm_compon_interf:
576      - allows for coupling of gray-atmosphere (atm_phys) with ocean.
577    o tools/build_options:
578      - switch from "-fPIC" to "-mcmodel=medium" in optfiles: linux_amd64_gfortran
579        & linux_amd64_ifort11 and in linux_amd64_g77 & linux_amd64_open64 also
580        remove CPP setting (was identical to genmake2 default).
581    o pkg/gmredi & model/src: Some updating and work done on the residual model.
582      - created new file model/src/calc_eddy_stress.F to calculate the eddy stress.
583      - fixed up the calculation of the eddy stress and how it is added to the
584        external forcing via taueddy_external_forcing.F
585      - at the moment, it is very experimental and only works with the variable eddy
586        diffusivity calculated in gmredi_k3d.F
587    o pkg/seaice/seaice_check.F: add a check to catch the case of specifying
588        lw/swfluxfile instead of lw/swdownfile in data.exf together with pkg/seaice
589    o testreport (& tools/do_tst_2+2):
590      - for MPI test, set default COMMAND to 'mpirun -v -np TR_NPROC ./{executable}'
591    o tools/build_options: linux_amd64_gfortran & linux_amd64_ifort11:
592      - remove CPP='cpp -traditional -P' (this is genmake2 default)
593      - add switch (for big setups) to use 'medium' memory-model (but leave it
594        commented out for now). Note: needed with FC 19 to compile big setups.
595    o pkg/atm_compon_interf:
596      - regroup per field origin (model & pkgs) the coupling storage routines
597         (which accumalate in time each coupling field)
598      - move bi,bj loops inside atm_store_my_data.F and store also wind-stress;
599        update accordingly + simplify aim_do_physics.F
600    
601    checkpoint64n (2013/08/26)
602    o pkg/bbl:
603      - update formulation to reduce dispersion of tracer properties in bbl
604      - replaced horizontal and vertical transport parameters with velocities
605      - changes results for verification/global_with_exf.yearly
606    o verification/halfpipe_streamice:
607      - change to matrix construction; update both Fwd & AD output.
608    o verification/tutorial_tracer_adjsens:
609      - OpenAD test: switch to vector-invariant momentum since fluxform with
610        rStar causes problems with OpenAD; update output.
611    o tools:
612      - genmake2: define a common prefix for all temp-file names ; move them
613        to local /tmp disk (but would be easy to move them back);
614      - xmakedepend: apply the same switch for temp-files.
615    o pkg/offline:
616      - changes for use with rStar (NLFS): assume that we continue to provide
617        UVELMASS/hFacW_ini & VVELMASS/hFacS_ini (hFacWi,S_ini as written in grid
618        output files) and apply r* scaling at each time-step (function of the time
619        varying Eta field); use normal pickup files (needed for restart with NLFS).
620    o adjoint with OpenAD:
621      - move OpenAD-specific files from verification/OpenAD/code_oad_all to a new
622        package openad.  This package has to be compiled for all runs with OpenAD
623        instead of specifying code_oad_all as a modification directory.
624      - link the fortran templates from tools/OAD_support to the build directory
625        for preprocessing to avoid conflicts between different setups compiled
626        simultaneously and simplify cleanup.
627    o pkg/exf:
628      - in exf_getforcing.F: comment out most of the EXCH calls (fields used by
629        main model or other pkgs are exchanged in EXF_MAPFIELDS).
630    o model/src:
631      - do_stagger_fields_exchanges.F: skip EXCH calls when using pkg/offline
632        (similar to do_fields_blocking_exchanges.F).
633    o tools/genmake2:
634      - remove TAF output src code just before calling staf (when not doing a fresh
635        built, will stop if things go wrong with staf).
636      - fix target "adobj" (left from TAF version-2 transition)
637    o pkg/diagnostics:
638      - add a parameter to track the status of pkg/diagnostics activation;
639        this replace/extend the use of logical param "settingDiags" (to check
640        when adding diag to the list) to also check any DIAGNOSTICS_[]FILL* call.
641        New S/R to print error message and stop when pkgStatus is not right.
642      - to try: add a warning when "data.diagnostics" exist but useDiagnostics=F.
643    
644    checkpoint64m (2013/08/13)
645    o model/inc:
646      - move FCORI_MACROS.h from PARAMS(_MACROS).h to GRID_MACROS.h (left from
647        8 yrs ago modif when Coriolis arrays were moved from PARAMS.h to GRID.h)
648    o pkg/kpp & aim_v23:
649      - only call DIAGNOSTICS_FILL when useDiagnostics=TRUE.
650    o pkg/seaice:
651      - restore (last time on 2011/12/24) ability to compile pkg/seaice with
652        undefined pkg/exf ALLOW_ATM_TEMP or ALLOW_RUNOFF CPP-options.
653      - only call DIAGNOSTICS_FILL when useDiagnostics=TRUE.
654    o eesupp/src:
655      - fix check for overlap-size argument (myOLn.GT.MAX_OLY_EXCH)
656        in exch1_rx[_ad].template (thanks to Francois Lefeuvre report).
657    o switch to TAF version-2:
658      - add flow directives to "freeze" naming convention for ad-routines that
659        are used in I/O routines of adjoint state and associated common blocks
660        that are used in adcommon.h (backward compatible with version-1)
661      - update all ad-optfiles (in tools/adjoint_options + few local to some
662        verification exp) to switch to latest TAF version (currently 2.5.5);
663        merge "*_mpi" adoptfiles into the corresponding non-mpi (but commented
664        out except for diva).
665      - the major change with TAF version-2 is that both the differentiated
666        routines and the forward routines (new) are returned as part of the TAF
667        output source code. Update genmake2 accordingly.
668      - new output for AD experiment tutorial_global_oce_biogeo (better AD gradient
669        with version-2 when compared to TLM or FWD gradient); other experiments
670        output show minor changes (machine truncation level); update the few AD &
671        TLM output with 12 matching digits only (some prior to version-2 switch).
672    
673    checkpoint64l (2013/08/05)
674    o model/src:
675      - in dynamics.F, skip the call to CALC_VISCOSITY if momViscosity=F
676      - main_do_loop.F: no longer includes additional (AUTODIFF) header files
677        when using TAF but only if using OpenAD.
678    o pkg/mom_common+fluxform+vecinv:
679      - always set horiz. viscosity arrays to background value before calling
680        MOM_CALC_VISC (in MOM_FLUXFORM & MOM_VECINV) and call S/R MOM_CALC_VISC
681        only when using variable horiz. viscosity (useVariableVisc=T);
682      - simplify mom_vecinv.F (only 1 block for momViscosity).
683    o pkg/mom_common: variable horiz. viscosity in NH code
684      - move horiz-viscosity 3-D arrays viscAh_W & viscA4_W (used in calc_gw.F)
685        from model/inc/NH_VARS.h to pkg/mom_common/MOM_VISC.h
686      - store in common block (in MOM_VISC.h) logical parameters: useHarmonicVisc,
687        useBiharmonicVisc & useVariableVisc.
688      - fix old bug (already in 1rst implementation of variable horizontal viscosity
689        in calc_gw.F, version 1.27, 2006/06/20):
690        horizontal bi-harmonic viscosity in gW was missing when wiscA4W=0
691        even if variable bi-harmonic viscosity (e.g., viscA4Grid) was non-zero.
692      - change background horiz viscosity in vertical momentum (gW) to always be
693        viscAhW,viscA4W (instead of switching to viscAhD, viscA4D when using
694        any type of variable viscosity, e.g., viscAh/4Grid)
695      - change default value of viscAhW,viscA4W to viscAhD,viscA4D (instead of
696        viscAh,viscA4) which default to viscAh,viscA4 :  this avoid missing
697        horiz. viscosity in W eq when just setting viscAhD/Z,viscA4D/Z (since
698        default viscAh,viscA4 is zero).
699    o model/src:
700      - extend length of drC & recip_drC from Nr to Nr+1.
701    o Divided Adjoint (DIVA) with MPI:
702      - genmake2: do not create local ./mpi_headers dir when no file to copy into.
703      - remove option ALLOW_DIVIDED_ADJOINT_MPI (replaced by ALLOW_DIVIDED_ADJOINT
704        and ALLOW_USE_MPI) from model/src code and from ECCO_CPPOPTIONS.h.
705    
706    checkpoint64k (2013/07/23)
707    o tools/OAD_support:
708      - avoid the need for file "oadtempflile" in insertTemplateDir.bash
709        and remove it from genmake2.
710    o tools/build_options:
711      - remove MPI_HEADER_FILES_INC setting (no longer used) and comment out
712        MPI_HEADER_FILES list (let genmake2 find the missing headers)
713    o verification/halfpipe_streamice:
714      - change to driving stress formulation; update both Fwd & AD output.
715    o tools/genmake2 and Divided Adjoint with MPI:
716      - remove default setting of MPIINCLUDEDIR from $MPIHOME (always been broken);
717      - only create local ./mpi_headers dir if using MPI and MPIINCLUDEDIR is set;
718      - add new variable (LOCAL_MPI_HEADERS, replace MPI_HEADER_FILES_INC) in
719        Makefile, which is set by genmake2, and check which mpi-headers are needed.
720        Note: need to update adjoint_options/adjoint_diva_mpi accordingly.
721      - update target "CLEAN" (to also remove ./mpi_headers/ dir).
722    o testreport:
723      - changes for Divided Adjoint Run: when file "run_ADM_DIVA" is present,
724        perform additional runs (number of additional runs is "add_DIVA_runs" taken
725        from file run_ADM_DIVA ; should match "nchklev_3" in file "code_ad/tamc.h").
726    o verification/lab_sea (AD test):
727      - change to test Divided Adjoint Run in this set-up (both standard AD test
728        and 2 secondary AD test: noseaice + noseaicedyn); drop the evp AD test.
729    o pkg atm_ & ocn_compon_interf:
730      - remove cpl_earlyExpImpCall=F option (was mainly a hack added for the old
731        staggerTimeStep implementation) and disable (retired) corresponding
732        parameter.
733    o pkg/offline:
734      - comment out unused field-array: ICEM, ConvectCount, hflx[01], icem[01];
735      - add S/R OFFLINE_CHECK to print offline parameter summary
736        and stop if loading a file that is not used;
737      - enable to calculate GMRedi tensor, KPP mixing and convective index
738        when the corresponding file(s) is/are not specified (but pkg is used).
739      - comment out resetting of monitorFreq (to endTime) since it still useful
740        for monitoring CFL numbers and checking offline fields.
741    o OpenAD:
742      - do not define OAD_DEBUG (in tools/adjoint_options/adjoint_oad) to get
743        smaller standard output) and generate new (smaller) output (on baudelaire
744        using gfortran with -ieee) for exp. tutorial_tracer_adjsens
745    o model/src:
746      - call EXTERNAL_FORCING_SURF outside bi,bj loops (in do_oceanic_phys.F),
747        (where external_forcing_adjust was called) and change list of arguments;
748      - merge external_forcing_adjust.F into external_forcing_surf.F
749      - put surface relaxation of SST & SSS in new S/R (forcing_surf_relax.F)
750        which also contains balancing surface relaxation (ALLOW_BALANCE_RELAX,
751        previously in file "balance_relax.F", now removed); remove corresponding
752        arrays in FFIELDS.h.
753      - EXTERNAL_FORCING_SURF is now called when using pkg/offline; implement
754        a hack for getting back surfaceForcingS (loaded from file) when using
755        ALLOW_OLD_VIRTUALFLUX (pkg/dic, in DIC_OPTIONS.h) in offline set-up.
756      - update output of AD test experiment global_ocean.cs32x15.seaice_dynmix
757        (was getting only 11 digits for AD-grad, due to different truncation
758         error in AD code).
759    
760    checkpoint64j (2013/07/04)
761    o pkg/offline:
762      - to enable the use of other features with pkg offline (e.g., obcs),
763        also call S/R DO_OCEANIC_PHYS in offline run - more modifs to come.
764      - comment out "allowFreezing" (now active) in 2 offline testing exp.
765    o pkg/exf ALLOW_RUNOFTEMP
766      - fix sign and make compatible with temp_EvPrRn .NE. UNSET_RL
767      - ahdded RUNOFTEMP test to verification/global_ocean.cs32x15/input.seaice
768      - changes verification/global_ocean.cs32x15/results/output.seaice.txt
769    o pkg/atm_phys:
770      - allows to add some damping on uVel,vVel (strength only function of k).
771    o verification, ad-tests:
772      - reduce length of the simulation for AD test: global_ocean.cs32x15.seaice,
773        global_ocean_ebm and offline_exf_seaice.thsice.
774    o verification/halfpipe_streamice:
775      - found a bug in s/r pkg/streamice/streamice_advect_thickness which caused
776        flux input boundary conditions to be ignored; a fix for this bug changed
777        verification results for forward test.
778      - add adjoint test.
779    o pkg/ptracers:
780      - allow to restart without SOM pickup (resetting SOM to zero).
781    o pkg/gmredi:
782      - New parameterisation for the calculation of K and (GM_PsiX,GM_PsiY) added.
783      - It uses mixing length theory and suppression by steering level effects to
784        calculate a diffusivity used in the Redi tensor (see Bates et al., submitted
785        to JPO, for more details).
786      - It also uses the diffusivity to calculate an eddy induced streamfunction
787        based on a PV closure (rather than a buoyancy closure as in GM).
788      - New files added to pkg/gmredi:
789        gmredi_k3d.F calculates the diffusivity for the Redi tensor and the eddy
790          induced overturning streamfunction (called from gmredi_calc_tensor)
791        gmredi_calc_eigs.F calculates the eigenvalues and eigenvectors required
792          for use in gmredi_k3d
793        gmredi_calc_urms.F calculates the the rms eddy velocity used to calculate
794          the eddy diffusivity
795    
796    checkpoint64i (2013/06/18)
797    o pkg/cheapaml:
798      - take src files from MITgcm_contrib/verification_other/offline_cheapaml/code
799        that enable the use of seaice (pkg/thsice thermo & pkg/seaice dynamics)
800        with pkg/cheapaml.
801    o utils/python: add subpackage for cubed sphere function, first example is
802        simple cs.pcol to plot 2D fields on a map
803    o pkg/streamice:
804      - This is a new package in MITgcm, which solves dynamic equations for ice
805         sheets and ice streams
806      - At the moment it is independent of atmosphere/ocean dynamics, or any
807        other physical packages in MITgcm, even ShelfIce (although it is anticipat-
808        ed that this will change)
809      - There is a new verification exercise that tests it, halfpipe_streamice,
810        evolves a 40x80 km ice stream/ice shelf (at coarse resolution) in a
811        rectangular embayment
812      - halfpipe_streamice is forward-only for now, will have TAF test soon
813      - for questions, email dgoldber@mit.edu
814    o pkg/thsice:
815      - fix filling of snow-precip diagnostic (SIsnwPrc) (left from the removing
816        of snowPrc from common bloc, on May 2nd, thsice_step_fwd.F revision 1.40);
817      - remove diagnostics 'SI_FrcFx' ( now identical to 'SI_Fract' with new
818         call sequence: ice-Thermo(thsice),ice-Dyn,ice-Advect );
819      - allow precip from pkg/cheapaml to make snow over seaice.
820    o pkg/cfc:
821      - move in separated header file (CFC_ATMOS.h) time-serie arrays of Atmos CFC
822      - remove atmos CFC 2-D arrays from common bloc (now local variables)
823      - change some hard-coded constant to run time parameter for reading and
824        and interpolating atmospheric CFC ; keep same default as previously.
825      - more flexible reading of Atmos CFC (number of records no longer hard-coded)
826      - put arguments in standard order: myTime, myIter, myThid
827      - use standard S/R GET_PERIODIC_INTERVAL for time interpolation of
828        atmospheric CFC ; fix for the case myIter < PTRACERS_iter0.
829      - fix calculation of surf tendencys for partial-cell and/or Non-Lin Free-Surf
830      - new routine to print summary of CFC params and check for consistency.
831    o pkg/seaice: add uice/vice to the parameter list of s/r seaice_advdiff,
832      similar to thsice_advdiff.
833      Note that for the B-grid case the routine parameters uc/vc are overwritten.
834    o pkg/cfc:
835      - change time interpolation for atmospheric CFC-11 (now same as for CFC-12);
836        update output (CFC-11) of experiment cfc_example and tutorial_cfc_offline.
837      - fix interpolation of atmphspheric CFC between Sorthern and Northern
838        hemisphere value.
839    o pkg/seaice:
840      - allow to use seaice dynamics without pkg/exf (e.g., using pkg/cheapaml)
841    o pkg/seaice: add Adams-Bashforth2 time discretization for ice dynamics;
842                  so far only for JFNK-solver, turn on with SEAICEuseAB2 = .TRUE.
843      - requires an additional time level that is stored in the pickup
844      - you can start with AB2 from a pickup without this time level with
845        pickupStrictlyMatch = .false.
846    
847    checkpoint64h (2013/05/26)
848    o pkg/cheapaml:
849      - replace one ()**.5 with SQRT + use temp var "cdu = tau/Du" (coare3_flux);
850        affect machine truncation (but exp cheapAML_box still pass with 13 digits).
851      - consistent treatment of uWind,vWind location: assume everywhere in
852        pkg/cheapaml that they are on C-grid (@ uVel,vVel location)
853        (Note: was already the case for Tair,Qair advection);
854        add option (INCONSISTENT_WIND_LOCATION) to recover old results.
855      - compute diabatic forcing only in the interior (excluding overlap regions)
856      - fill in array "Qsw" (for short-wave heating);
857      - add diagnostic for precip ; fill-in diagnostics for cheapAML state vars
858        before any update (consistent with MITgcm state var diagnostics);
859      - cheapaml_fields_load.F & cheapaml_init_varia.F : only fill outer edges if
860        non periodic ; + adjusted for uWind,vWind (C-grid).
861    o pkg/seaice:
862      - remove dependence of pkg/seaice versus pkg/exf (file: pkg/pkg_depend) and
863        add explicitly pkg/exf in experiments that currently use pkg/seaice.
864      - allows to compile pkg/seaice without pkg/exf.
865    o tools/OAD_support:
866      - use a local copy (ourRWCPinBd) to ensure index ourRWCP stays within bounds
867        of array "ourStepOf" in function rvNextAction (revolve.F90).
868    o pkg/aim_compon_interf renamed to pkg/atm_compon_interf
869      - change pkg name (to be used with other atmospheric physics pkg)
870        but by-pass CVS when making the new pkg so that we keep the CVS history.
871    o pkg/offline:
872      - call OFFLINE_FIELDS_LOAD from pkg/offline/offline_init_varia.F
873        (previously called from pkg/dic_surfforcing_init.F)
874    o model/src:
875      - re-order sequence of calls within packages_init_variables.F, using
876        standard order, except for:
877         DIAGNOSTICS_INIT_VARIA and OFFLINE_INIT_VARIA (called @ the top),
878         CTRL_MAP_INI and OBCS_INIT_VARIABLES (called @ the bottom)
879    o new pkg: atm_phys
880      - add entry point and source code (previously in contrib
881          verification_other/atm_gray/code_gray/) for new pkg "atm_phys"
882        (atmospheric physics pkg from P. O'Gorman and T. Schneider, JCl, 2008).
883      - re-order sequence of calls within packages_readparms.F,
884         packages_init_fixed.F and packages_write_pickup.F
885        (but skip packages_init_variables.F because of TAF issues).
886      - update contrib/*/atm_gray/ experiment.
887    o pkg/seaice (ITD code):
888      - simplify and fix the writing of pickup-files for ITD case
889    o pkg/seaice (ITD code):
890      - introduce floe size dependent lateral melt for ITD case;
891      - cleaning (avoid division by zero, change to f77 syntax, remove tabs)
892      - update seaice_itd experiment main output.
893    o pkg/thsice:
894      - remove snowPrc from common block THSICE_FLUX, in THSICE_VARS.h and
895        declared it locally (without bi,bj) in thsice_main.F & aim_do_physics.F;
896        changed accordingly pkg/atm2d.
897    
898    checkpoint64g (2013/05/01)
899    o pkg/exf ALLOW_RUNOFTEMP
900      - if defined,  river and glacier runoff temperature can be read-in from
901        runoftempfile; runoftempfile needs to have same format as runofffile
902    o pkg/thsice (& pkg/bulk_force):
903      - In case Energy-Reference-Level (ERL) is used (temp_EvPrRn=0), account
904        for energy content of Precip + RunOff & Evap (like with pkg/exf).
905      - change computation domain to always be the interior (without overlap).
906      - fix bug (wrong overlap) when using EXF and stressReduction > 0.
907    o verification/tutorial_global_oce_biogeo:
908      - add preliminary OpenAD setup (still has problems)
909    o pkg/seaice:
910      - turn some parameters for choosing the convergence criterion of
911        the inexact Newton method (JFNK) into runtime parameters for convenience
912      - clean up seaice_calc_viscosities.F: remove/retire two options for
913        SEAICetaZmethod (1,2), introduce area weighting for method 3; this changes
914        the results of lab_sea/input because a division has been replaced by
915        a multiplication with the reciprocal (sumNorm)
916      - modify offline_exf_seaice/input.dyn_jfnk/data.seaice to improve
917        convergence of solver (changes results, of course), and to test some
918        new features
919    o model/src:
920      - remove unused (since Aug 2006) S/R SET_WRITE_GLOBAL_PICKUP and its call.
921      - remove unused forcing field "dQdT" and associated parameter "dQdTFile".
922      - move forcing adjustment (balancing surface forcing) in specific S/R
923        where might also be applied exchanges (if needed) to forcing arrays.
924    o pkg/shelfice:
925      - allow to specify the Ice-Shelf mass per unit area (instead of
926        shelficeLoadAnomaly) and do the conversion from one to the other
927      - move loading from file of shelficeLoadAnomaly from SHELFICE_INIT_VARIA
928        to SHELFICE_INIT_FIXED: (a) avoid some TAF recompution issues and
929        (b) will be loaded in time (before calling INI_PRESSURE) in case it is
930        needed in phi0surf for initial pressure calculation when useDynP_inEos_Zc
931      - update isomip experiment forward output (get machine truncation error
932        from conversion shelficeLoadAnomaly -> shelficeMass -> shelficeLoadAnomaly)
933    o verification/offline_exf_seaice:
934      revise data.seaice in input.thermo and input_ad and update results accordingly
935        HO = 0.2, SEAICE_areaLossFormula = 2,
936        SEAICE_growMeltByConv = .TRUE.,
937        SEAICE_doOpenWaterMelt = .TRUE.,
938      Improve consistency with input.thsice and fix the spurious 500m ice corners
939    o verification/global_ocean.cs32x15:
940      - set Energy Reference Level to liq. water @ 0 degC: temp_EvPrRn=0.,
941        in icedyn (thsice+seaice-dyn) test and update output.
942    o verification/offline_exf_seaice:
943      - adjust list of tested variables (with testreport) and update
944        standard test output with better slection of monitored fields.
945    o pkg/cd_code:
946      - swtich off Adams-Bashforth on the 1rst iteration. Update output of
947        experiment lab_sea.hb87
948    o tools/genmake2:
949      - change default makedepend from the system default to tools/xmakedepend:
950        When no makedepend is specified, select tools/xmakedepend it the test pass,
951        otherwise select the system default (if exist and pass the test) or
952        try to build cyrus-makedepend ; stop if none of the 3 works.
953    o pkg/exf & pkg/thsice:
954      - In case Energy-Reference-Level (ERL) is used (temp_EvPrRn=0), account
955        for energy content of Precip + RunOff & Evap. Assumes:
956       1) Rain has same temp as Air.
957       2) Snow has no heat capacity (consistent with seaice & thsice pkgs)
958       3) Run-Off comes at the temp of surface water (with same Cp)
959       4) Evap over ocean is released to the Atmos @ surf-temp (=SST); should be
960        put directly into Latent Heat flux & should use water-vapor heat capacity.
961       5) Evap over snow/seaice (pkg/thsice) assumes constant Lf+Lv (consistent
962        with snow having no Cp) => water vapor is released to Atmos @ 0^oC (=ERL).
963    o pkg/seaice: simplify the use of CPP flags in JFNK-related files
964        (compile when SEAICE_ALLOW_JFNK is defined)
965    o pkg/thsice:
966      - fix oceanic flux diagnostics & timeave (left from new sequence of calls
967        implementation): move THSICE_AVE call after the advection (called directly
968        from thsice_do_advect.F).
969    o verification/global_ocean.90x40x15 and OpenAD:
970      New experiment for OpenAD is identical to the one in input_ad except that
971        multiDimAdvection=.FALSE.,
972      There is still an issue with this.
973    o pkg/thsice:
974      - account for ice velocity (ocean relative velocity) in turbulent heat flux
975        at the base of the ice; update output of global_ocean.cs32x15 (icedyn)
976        and offline_exf_seaice (main test).
977    
978    checkpoint64f (2013/03/31)
979    o verification/OpenAD:
980      - new (smaller, without OAD_DEBUG) output_oadm.txt generated using gfortran.
981    o verification/isomip, pkg/shelfice and OpenAD:
982      - add OpenAD setup to this exp and make shelfice package work with OpenAD
983    o verification/tutorial_global_oce_biogeo:
984      - update AD and TLM output after turning off ALLOW_FE (in DIC_OPTIONS.h)
985    o verification/offline_exf_seaice:
986      - replace adjoint experiment (now similar to fwd input.thermo/ setup).
987    o verification/tutorial_tracer_adjsens, pkg/ptracers and OpenAD:
988      - add OpenAD setup to this exp and make ptracers package work with OpenAD
989    o pkg/seaice/seaice_evp.F:
990       mask the asymmetric contribution of the ice-ocean stress (when
991       the turningAngle is non-zero) over open water to avoid stripes
992       in the EVP-solutions after many EVP-substeps. This does not change
993       the verification experiment (because turningAngle=0 in that experiment),
994       but will affect other EVP solutions with turningAngle.ne.0
995    o verification, AD & TLM output:
996      - new TAF version 2.3.10 (previously 2.3.8) add more parenthesis in multiple
997        additions and multiplications which affect results at machine truncation
998        level. Update few AD output (1D_ocean_ice_column, bottom_ctrl_5x5,
999        lab_sea.noseaicedyn & offline_exf_seaice) and TLM output
1000        (1D_ocean_ice_column & tutorial_tracer_adjsens.som81) which had only 12
1001        digits of matching.
1002    o pkg/seaice:
1003       modify lsr-algorithm so that it vectorizes AND converges by using a
1004       "zebra" method: split vector loop into two with step size 2; this
1005       solves a general convergence problem for the JFNK solver on a vector
1006       computer. It has the potential to even improve convergence for
1007       non-vector machines, but it does change the results so it is turned
1008       off by default. To turn on define CPP-flags SEAICE_VECTORIZE_LSR and
1009       SEAICE_VECTORIZE_LSR_ZEBRA in SEAICE_OPTIONS.h
1010    
1011    checkpoint64e (2013/03/05)
1012    o pkg/ecco and several verification experiments:
1013       Remove special versions of the_model_main.F, the_main_loop.F, forward_step.F
1014       from ecco package, and revert to unified routine in model/src/
1015       Adjust verification experiments accordingly, especially gloal_oce_llc90
1016       Should conclude long-standing work by Gael to reconsile the_main_loop with
1017       ECCO and will enable OpenAD's revolve loop in ECCO setup.
1018    o pkg/generic_advdiff:
1019      - implement compressible flow method for multi-dim advection (similar to
1020        gad_som_advect.F); add new option "GAD_MULTIDIM_COMPRESSIBLE" (since
1021        TAF generates many recomputations) to use it; no yet coded with implicit
1022        vertical advection.
1023      - change experiment advect_cs (new output) and advect_xy (same output)
1024        to test compressible flow multi-dim advection.
1025    o pkg/generic_advdiff:
1026      - fix SOM advection for unusual cases (linear Free-Surf in r*, other
1027        cases where linear Free-Surf is not @ k=1, e.g., useShelfIce)
1028    o pkg/seaice:
1029      - fix bug in the no-slip implementation in seaice_calc_strainrates.F, this
1030        bug affects two verification experiments (lab_sea and lab_sea.hb87),
1031        recover old (wrong) results by setting noSlipFac = 2. in
1032        seaice_calc_strainrates.F;
1033      - add another averaging method for etaZ (etaZmethod=3), a mix of 2 and 0
1034      - add runtime parameter SEAICE_JFNKepsilon for that finite difference
1035        gradient in the Jacobian times vector operation (s/r seaice_jacvec)
1036      - fix line search in seaice_jfnk.F (s/r seaice_jfnk_update)
1037    o pkg/seaice: reorganize seaice_lsr.F to be able to reuse more code:
1038      - new subroutines seaice_lsr_tridiagu/v
1039      - introduce loop bounds i/jmin/max to be able to use a restricted
1040        additive Schwarz method, but not used for now.
1041      - rename SEAICE_CALC_LSR_COEFFS into SEAICE_LSR_CALC_COEFFS
1042      - use new subroutines seaice_lsr_tridiagu/v in s/r seaice_preconditioner
1043    o OpenAD support
1044       Reorganize S/R call for overall time-stepping loop to facilitate
1045       OpenAD revolve loop replacement
1046       (new S/R main_do_loop.F)
1047    o model/src:
1048      - add 3-D array 3rd dimension to argument list of S/R ADAMS_BASHFORTH2/3;
1049      - pkg/cheapaml: remove local S/R ADAMS2d and use instead standard S/R
1050        ADAMS_BASHFORTH2.
1051    o pkg/cheapaml:
1052      - add new parameter (default=F, same as before) to disable full domain
1053        (including land) periodicity in X & Y dir.
1054      - new S/R CHEAPAML_COPY_EDGES to copy relaxation field into edges of
1055        prognostics field ; merge the 2 S/R cycle_2d_tracer and timestep_2d_tracer
1056        into single S/R CHEAPAML_TIMESTEP.
1057    
1058    checkpoint64d (2013/02/17)
1059    o pkg/monitor (angular momentum):
1060      - do not add Eta contribution to the total AM if using rigid-lid;
1061      - correct for Adams-Bashforth in zonal-wind part (instead of in AM_eta).
1062      - horizontal discretisation: compute Zonal wind contribution separately for
1063        each component (instead of from cell centered averaged) and use the 4
1064        grid-cell corner averaged value of Omega*(R*cos_Phi)^2 in AM_eta part.
1065      - Check that AM is conserved with linear dynamics (momAdvection=F and linear
1066        FreeSurf) if using vectorInvariant momentum.
1067    o model/src (horizontal grid):
1068      - move initialisation of all horizontal grid arrays to null value
1069        from specific horizontal grid S/R to main S/R INI_GRID;
1070      - add 2 new arrays to project model C-grid velocity on to zonal direction
1071        (similar to AngleCosC & -AngleSinC but at U and V point location) and
1072        compute them in S/R CALC_GRID_ANGLES.
1073    o pkg/seaice: replace a hard coded parameter by a runtime parameter
1074        SEAICE_JFNK_tolIter
1075    o pkg/seaice: introduce a restricted additive Schwarz (RAS) method in
1076        preconditioner for JFNK (run LSR into the overlaps as far as possible,
1077        i.e OLx/y-2, but overwrite the solution in the overlaps)
1078      - extend loop range in seaice_calc_viscosity
1079      - add new parameters SEAICE_OLx/y (default = OLx/y-2)
1080      - add flexible loop ranges to seaice_preconditioner, seaice_calc_lsr_coeffs
1081      - slightly modify loops in tridiagonal solver lsr-preconditioner
1082      - by default remove the extra exchange in seaice_preconditioner with a
1083        replacement of an undocumented CPP flag by SEAICE_PRECOND_EXTRA_EXCHANGE
1084      - modify offline_exf_seaice so that old results without RAS are reproduced
1085        for output.dyn_jfnk.txt
1086      in seaice_fgmres.F (unrelated to RAS)
1087      - add a cpp-flag option for a re-ordered mapping (potentially more
1088        efficient), but because this changes the results, turn it off by
1089        default
1090      - replace the save statement by local common blocks
1091    o utils/matlab:
1092      - fix tile-offset in rdmnc.m when output was produced using EXCH2.
1093      - update cs_grid/bk_line scripts to use load_grid.m (in utils/matlab)
1094        instead of local script "load_cs.m".
1095    o pkg/seaice:
1096      - fix a serious bug in seaice_fgmres.F, s/r seaice_scalprod, connected
1097        to the scalarProductMetric and the unrolling. By chance this does not
1098        change the verification experiment, because of the particular domain
1099        decomposition
1100    o pkg/diagnostics:
1101      - change default missing_value from UNSET_RL to -999.
1102    o pkg/layers: improve vectorization of layers_fluxcalc.F
1103      - step 1: split loops, make TatU/V 2D arrays. This alone reduces the cpu
1104        time spent in this routine by more than a factor of 3 on an NEC-SX8
1105      - step 2: replace search algorithm by a bisection algorithm found in
1106        Press et al. Numerical Recipes in Fortran. This algorithm can be
1107        vectorized and finds the correct bin in approx. log2(Nlayers) steps.
1108        For now, use this algorithm only for TARGET_NEC_SX defined.
1109      - moved the search algorithm into a separate subroutine, that is kept
1110        within the same file for automatic inlining.
1111      - modified catching potential errors
1112    o pkg/ecco:
1113      - add compile switches ALLOW_SHALLOW_ALTIMETRY and ALLOW_HIGHLAT_ALTIMETRY.
1114    o model/src, pkg/autodiff, pkg/ctrl, pkg/grdchk :
1115      - modifications for ALLOW_GENTIM2D_CONTROL
1116      -- forward_step.F, the_main_loop.F : pass options and arrays for adjoint tapes.
1117      -- load_fields_driver.F : add call to CTRL_MAP_GENTIM2D( myTime, myIter, myThid )
1118      -- add xx_gentim2d0/1 in ctrl_ad_check_lev1_dir.h checkpoint_lev1_directives.h etc
1119      -- use ctrl_swapffields.F (new) instead of exf_SwapFFields.F in ctrl_get_gen.F
1120    o model/src:
1121      - account for moist thermodynamics in (dry) potential temperature equation;
1122        update results of experiments: aim.5l_cs (x2), fizhi-cs (std + aqualev)
1123        and cpl_aim+ocn.
1124      - also switch to standard compiler (gfortran, was using ifort previously)
1125        for fizhi-cs experiments reference output.
1126    o pkg/ctrl:
1127      - 1st step toward generic time-varying control variable (2D) via CPP option
1128        ALLOW_GENTIM2D_CONTROL
1129      - note new namelist ctrl_nml_genarr in data.ctrl
1130    o verification/global_ocean.cs32x15:
1131      - switch off OLD_THSICE_CALL_SEQUENCE (both forward and AD code) to use new
1132        thsice calling sequence and update "output.icedyn.txt" output file.
1133    o pkg/ptracers:
1134      - from Ryan A.: code to allow to restart a tracer at regular time interval
1135        specifying a reset frequency and a reset-phase (for each tracers).
1136    o pkg/thsice:
1137      - implement new sequence of calls for thsice+seaice:
1138          previously:   ice-Dyn,ice-Advect,ice-Thermo(thsice)
1139          new sequence: ice-Thermo(thsice),ice-Dyn,ice-Advect
1140      - allows (with temporary CPP option "#define OLD_THSICE_CALL_SEQUENCE"
1141        in CPP_OPTIONS.h) to recover old sequence;
1142      - update diagnostics for Intermediate State thsice diagnostics: now filled
1143        just before advection (instead of just after advection in old sequence);
1144      - update output of experiment offline_exf_seaice (standard test);
1145      - in global_ocean.cs32x15 exp., postpone output.icedyn.txt update
1146        by setting #define OLD_THSICE_CALL_SEQUENCE in CPP_OPTIONS.h
1147    o pkg/aim_v23:
1148      - use tiled array for aim_CO2 and surface wind speed for export to coupler;
1149      - use standard pkg/mdsio routines to read & write CO2 pickup file;
1150      - in-line S/R AIM_AIM2DYN_EXCHANGES in aim_do_physics.F;
1151      - Implement new sequence of calls for seaice advection (with thsice and
1152        seaice diffusion): do ice advection after ice-Thermodynamic (previously
1153        was done before); change aim_do_physics.F (split the bi,bj loops block);
1154      - use same CPP option (OLD_THSICE_CALL_SEQUENCE) to recover old sequence;
1155    o pkg/thsice:
1156      - add a missing EXCH of sIceLoad in thsice_main.F (ocean set-up) for the case
1157        where just seaice diffusion is used without seaice-dynamics.
1158    
1159    checkpoint64c (2013/01/18)
1160    o pkg/seaice:
1161      - add a parameter JFNKres_tFac that can replace JFNKres_t
1162        (= JFNKres_tFac*JFNKresidual before JFNK solver)
1163      - add a line search option to the JFNK solver
1164      - move update of u/vIce and computation of initial residual into a separate
1165        routine (same file); makes the code a little easier to read (?)
1166      - the line search requires computation of the residual and for some reason
1167        I cannot do the update of u/vIce at the beginning of the Newton loop
1168        without changing the results, so we move computation of the new residual
1169        also to the end of the Newton loop, even without the line search
1170    o pkg/mdsio:
1171      - write missing value (corresponding to undefined array value) to meta files;
1172        skip this if missing value is one (UNSET_RL would be a better value for the
1173        case of undefined missing value but it's current the default missing-value);
1174        Also update mdsio_read_meta.F (reading timeInterval & missing-value).
1175    o pkg/exf & thsice:
1176      - for diagnostics purpose, fill-up and update Qsw array (+ fill the
1177        diagnostics) even when SHORTWAVE_HEATING is #undef;
1178    o verification/cfc_example:
1179      - turn on pkg/layers with pkg/diagnostics (to test pkg/layers and to
1180        illustrate how to use it).
1181    o verification/offline_exf_seaice:
1182      in input: add SEAICErestoreUnderIce=.TRUE., and reduce size of forcing
1183        files to only one time-record.
1184      in input.thermo: narrow the 2 bands of low initial ice-concentration near
1185        N & S edges; switch on SEAICErestoreUnderIce=T; use pkg/diagnostics for
1186        snapshot output; same mcPheePiston value as in thsice with
1187        surf-current=0.2m/s.
1188      in input.thsice: similar set-up as in input.thermo (channel with same seaice
1189        initial conditions).
1190    o verification/cfc_example:
1191      - update file "data" with more standard choice (default rotationPeriod,
1192        exactConserv=T, reduce ivdc_kappa to 10, remove multiDimAdvection=F,
1193        set deltaTFreeSurf to deltaTtracer) and update the output.
1194    o pkg/layers:
1195      - fix bolus part so that it compiles with #undef GM_BOLUS_ADVEC;
1196      - ensure that "layers_bolus" is switched to False when useGMRedi=False.
1197    o verification/offline_exf_seaice:
1198      - set all {field}period to zero for constant-in-time forcing (not tested
1199        anywhere else).
1200    o verification/offline_exf_seaice:
1201      - dyn_lsr  : use pkg/seaice S/R (instead of pkg/thsice) to advect sea-ice;
1202      - dyn_jfnk : use pkg/thsice S/R (instead of pkg/seaice) to advect sea-ice.
1203    o model/src:
1204      - implement Finite-Volume method for (hydrostatic) presure gradient
1205        from S.-J. Lin (QJRMS 1997), for atmosphere using sigma-coordinate.
1206    o pkg/seaice: implement EVP* by Lemieux et al. (2012).
1207      - In order to be compatible with the default EVP code, this requires changing
1208        the EVP code around a little; and because any small change immediately
1209        breaks the lab_sea.hb87 verification experiment, the reference output is
1210        updated two times (each time the remaining aggrement was only 2 digits):
1211        - after replacing 1/dt by 1*recip_dt with a precomputed recip_dt
1212        - after replacing 1/(1+0.5*dt/tau) by a/(a+1), with a=2*tau/dt
1213        The adjoint test lab_sea.evp also needed to be updated.
1214      - Turn on EVP* by setting SEAICE_deltaTevp as before, and setting
1215        SEAICEuseEVPstar=.true.; for EVP* SEAICE_deltaTevp does not need to be
1216        a factor of SEAICE_deltaTdyn, and you can set the number of EVP steps
1217        explicitly with SEAICEnEVPstarSteps (thereby overriding the default of
1218        INT(SEAICE_deltaTdyn/SEAICE_deltaTevp)). Controlling EVP* is deliberately
1219        kept obscure, because I need to test it a little more.
1220    o pkg/cheapaml:
1221      - fix few incorrect type (_RL/_RS) in subroutine calls.
1222    o pkg/seaice:
1223      - new S/R SEAICE_MAP_RS2VEC (similar to SEAICE_MAP2VEC) to map _RS arrays
1224        to _RL vector; this fixes JFNK code when compiling with "-use_r4" option.
1225    o model/src:
1226      - add a warning if using select_rStar=2 with nonlinFreeSurf <> 4;
1227        change (in input_ad*/data) select_rStar from 2 to 1 for AD verification
1228        experiments global_ocean.cs32x15 & tutorial_tracer_adjsens (+ update output)
1229    o pkg/cheapaml:
1230      - replace "273.1 _d 0" by celsius2K in pkg/cheapaml/cheapaml.F and
1231        update output of experiment cheapAML_box.
1232      - store in CHEAPAML.h coeffs ssq[0:2] for saturation specific humidity,
1233        and set them only in one place (cheapaml_readparms.F).
1234      - replace "273.16 _d 0" by celsius2K & replace "3.14159 _d 0" by constant "PI"
1235      - remove re-setting of main-model parameter "celsius2K" (in cheapaml_readparms)
1236        and re-setting of cheapAML params "lath" & "p0" (in cheapaml_init_varia).
1237    o model/src/the_main_loop.F:
1238      - fix revision 129 : need both ALLOW_ECCO and ALLOW_ECCO_EVOLUTION.
1239    o pkg/seaice:
1240      - remove legacy branch code.
1241      - retire SEAICE_GROWTH_LEGACY and SEAICE_CAP_HEFF accordingly.
1242    o verification/*/code*/SEAICE_OPTIONS.h:
1243      - remove documentation for retired CPP flags (SEAICE_GROWTH_LEGACY,
1244        SEAICE_CAP_HEFF).
1245    o pkg/cheapaml:
1246      - use standard routine (S/R GET_PERIODIC_INTERVAL) to decide when it is time
1247        to load new forcing fields.
1248      - add missing "_d 0" where it's needed; + some editing (improve indentation).
1249      - remove switch to "-r8" compiler option (no longer needed) in verification
1250        cheapAML_box, keep same output (small trucation error differences).
1251    o verification/offline_exf_seaice:
1252      - add thermodynamics only test.
1253    o verification/cheapAML_box:
1254      - split the domain in 8 (2x4) tiles; add MPI and multi-threaded test;
1255        keep same output (same 14 digits for cg2d).
1256      - switch on "-r8" compiler option (some numerical values are missing
1257        the "_d 0") and update output (only 6 digits for cg2d were preserved).
1258    
1259    checkpoint64b (2012/12/24)
1260    o pkg/cheapaml:
1261      - remove un-used variables (Qnet,EmPmR) from pickup files.
1262      - store tendency of advected variables into cheapaml pickup file
1263        and fix the AB-2 restart.
1264    o verification/offline_exf_seaice and lab_sea adjoint:
1265      - switch to new code (#undef SEAICE_GROWTH_LEGACY).
1266      - switch to 4 time steps in offline, consistent with lab_sea.
1267      - match parameters from SEAICE_GROWTH_LEGACY branch in data.seaice.
1268      - update results after change of experiment seaice.
1269    o pkg/seaice:
1270      - remove option SEAICE_MULTICATEGORY; has been replaced with run-time
1271        parameter SEAICE_multDim. Issue a warning if SEAICE_MULTICATEGORY is
1272        still defined since SEAICE_multDim needs to be set to MULTDIM value (from
1273        SEAICE_SIZE.h) to recover previous #define SEAICE_MULTICATEGORY default.
1274    o model/src:
1275      - add run-time parameter to select CG2D solver minimum-residual solution
1276        (in case of a poor convergence).
1277    o pkg/seaice/seaice_lsr.F
1278      - move calculation of matrix coefficients into new
1279        S/R SEAICE_CALC_LSR_COEFFS; for now this routine remains in the same
1280        file; the main purpose of this change is to be able to reuse the code
1281        in S/R SEAICE_PRECONDITIONER
1282      - modify the computation of the residual so that the mass of sea-ice
1283        is not used twice; this simplifies the calculations, but since
1284        the residual is never used except when LSR_mixIniGuess.ge.4---and this is
1285        not tested in testreport---this does not affect the testreport results.
1286    o verification/seaice_obcs:
1287      - disable SEAICE_GROWTH_LEGACY; reset input files to match those of
1288        verification/lab_sea/input.salt_plume; changes results/output.txt*
1289    o model/src:
1290      - adapt quasi-hydrostatic formulation to work with p or p* coordinate.
1291    o pkg/seaice:
1292      - improve description of parameters in seaice_fgmres.F and start
1293        cleaning up the code
1294      - change name of SCALPROD to SEAICE_SCALPROD and modify meaning of
1295        second argument
1296      - add a metric based on grid cell area to SEAICE_SCALPROD; update
1297        results of offline_exf_seaice.dyn_jfnk
1298      - compute initial residual norm in seaice_jfnk based on SEAICE_SCALPROD
1299    o pkg/aim_v23:
1300      - fix an other bug in dissipation heating (grid-cell area was missing).
1301    o model/src + pkg/seaice:
1302      - add global (multi-tile) linear solver for pair of tri-diagonal system
1303        along X and Y lines, respectively for U and V component.
1304        Note: 1) MPI and cube-exchange not yet coded.
1305            2) probably not accurate for poorly conditioned / large size problem.
1306      - add option for SEAICE_LSR to use global (multi-tile) tri-diagonal solver;
1307        default: not compiled and not used.
1308    o pkg/seaice:
1309      - first attempt at a multi-threaded fgmres solver for the JFNK solver:
1310        introduce bi/bj loops and use global_sum_tile_rl instead of
1311        mpi_allreduce in seaice_fgmres.F
1312      - improve diagnostics output for fgmres solver (seaice_fgmres.F)
1313      - replace a few unnecessary goto statements by if-blocks  (seaice_fgmres.F)
1314      - add a verification experiment for JFNK in offline_exf_seaice
1315    o verification:
1316      - change (for now, only fwd test) offline_exf_seaice experiment:
1317        use a re-entrant channel with idealized coastline (trapezoidal shape)
1318        at southern boundary to explore seaice dynamics and thermodynamics
1319        with simple forcing. Main set-up has dynamics+thermo and SST relaxation;
1320        secondary test (input.thsice) use thermodynamics only with SST relaxation.
1321      - add seaice-dynamics only secondary test using LSR and pkg/thsice advection.
1322    o pkg/exf:
1323      - disable "sstExtrapol" when Nr=1
1324    o verification:
1325      - add new experiment "cheapAML_box" (simple 1 layer set-up from Bruno Deremble)
1326        to test pkg/cheapaml.
1327    o pkg/aim_v23 & pkg/shap_filt:
1328      - fix dissipation heating (erroneous gravity multiplication factor).
1329    o pkg/seaice:
1330      - remove unused field pressPre from jfnk solver
1331      - rename two subroutines in seaice_preconditioner.F
1332    o eesupp/src:
1333       - S/R MDSFINDUNIT avoids reserved unit numbers (scrUnit1, eeDataUnit ...)
1334    o pkg/seaice/seaice_preconditioner.F: fix preconditioner once again
1335       - remove wrong parts of the rhs and the lhs (were in there
1336         because I did not understand the concept of this preconditioner)
1337       - add an exchange between u- and v-sweep. This increases communication
1338         by a factor of two but improves the convergence of jfnk. Ideally,
1339         one would like the u- and v-sweep to be independent. So far within
1340         undocumented ifdefs
1341       - reorganize the extra computations for printing the residuals
1342    o tools/genmake2:
1343      - comment out the "mpif.h" include in NetCDF test programm (for MPI built)
1344        since it's not necessary (and was preventing to use MNC in some cases).
1345    
1346    checkpoint64a (2012/11/16)
1347    o pkg/autodiff:
1348      - improve pkg-internal logical parameter switch (inAd/inFwd mode) so that
1349        autodiff_readparms.F no longer depends on calling order (within
1350        packages_readparms.F) and no longer requires to include ${PKG}_PARMS.h):
1351        rename param turnFreeDriftInAdMode to SEAICEuseFREEDRIFTswitchInAd
1352        and change param SEAICEuseDYNAMICSinAdMode to SEAICEuseDYNAMICSswitchInAd.
1353    o pkg/obcs:
1354      - adding tidal velocity forcing capability to obcs
1355        for usage example, see verification/seaice_obcs/input.tides
1356    o pkg/seaice:
1357      - turn the LSR-relaxation parameters WFAU/V into runtime parameters
1358        SEAICE_LSRrelaxU/V
1359      - introduce runtime parameter SEAICEetaZmethod (=0 by default)
1360    o pkg/aim_v23:
1361      - implement heating from friction (bottom friction and stratospheric drag).
1362    o pkg/shap_filt:
1363      - fix diagnostic "SHAP_dKE" (was 2 time smaller); implement heating from
1364        dissipation but only for Shap_funct=2, active when addFrictionHeating=T.
1365    o model/src:
1366      - move AddMass common block from DYNVARS.h to FFIELDS.h; allow to read-in
1367        time-constant addMass field from file (addMassFile);
1368      - support for heating due to friction (and Kinetic Energy dissipation):
1369        add option, run-time switch and 3-D field array + support code ; each pkg
1370        or S/R can add heating contribution (if there is a sink of KE); the sum is
1371        accounted for as a Temperature tendency term (EXTERNAL_FORCING_T).
1372    o pkg/seaice:
1373      - complete merge of ITD code into seaice_growth.F
1374        from MITgcm_contrib/torge/itd/code/
1375        no verification so far, but Torge Martin tested
1376        "1-D test case and Beaufort set up;
1377        deliver okay results after 1 model year."
1378      - complete merge of SEAICE_SIZE.h into all relevant routines
1379      - move computation of eta at Z-points into calc_viscosities
1380        + introduce global field etaZ
1381        + add different methods for computing etaZ, for now the old
1382          method (simple averages of eta to Z-points) is hardwired
1383        + replace etaMeanZ by etaZ in seaice_lsr, seaice_calc_residual,
1384          seaice_preconditioner
1385      - simplify computations for SEAICE_ZETA_SMOOTHREG
1386      - seaice_preconditioner:
1387        + replace one remaining press by pressLoc (mistake)
1388        + adjust printing of residuals
1389      - improve I/O of diagnostics of JFNK in seaice_jfnk.F:
1390        + add (SEAICE.h) and rename some counters (initiliased in
1391          seaice_init_fixed.F)
1392        + add _BEGIN/END_MASTER (myThid)  around print statements
1393        + print total number of iterations and failures over SEAICE_monFreq
1394          interval to STDOUT
1395      - move control over output-messages by fgmres to seaice_jfnk to save
1396        some operations
1397      - move resetting initial guess for fgmres outside of seaice_fgmres_driver
1398        in order to make restarts with sol .ne. zero (fgmres with restarts)
1399        (seaice_jfnk.F, seaice_fgmres.F)
1400      - seaice_calc_l/rhs.F: replace maskW/S by maskInW/S; this fixes
1401        a serious convergence problem when open boundaries are involved
1402    o pkg/ggl90: fix computation of control volumes for the case of
1403      ALLOW_GGL90_HORIZDIFF (probably not used very often): move control volumes
1404      up half a grid cell from C-centered to W-centered (pointed out by C. Eden)
1405    o pkg/seaice: simplify seaice_evp by avoiding use of extra fields u/vIceC
1406    o pkg/autodiff
1407      - Add inAdMode switch for SEAICEuseDYNAMICS:
1408        SEAICEuseDYNAMICSinAdMode
1409        (extend logic in ADAUTODIFF_INADMODE_SET)
1410    o pkg/seaice
1411      - Step 1 of merging ice-thickness distribution (ITD) code from
1412        MITgcm_contrib/torge/itd/ (author: Torge Martin)
1413        The code implements concept laid out in Thorndike et al. (1975);
1414        code is enabled via CPP flag SEAICE_ITD
1415        nITD (in SEAICE_SIZE.h) defines number of ice thickness categories;
1416        code is not complete yet!!
1417      - SEAICE_SIZE.h now included in almost all seaice routines
1418    o verification (using seaice):
1419      - switch back seaice-dynamics (+ lower SOLV_MAX_ITERS) in ADM exp.
1420        global_ocean.cs32x15.seaice ; update results.
1421      - compile B-grid dynamics in FW test exp 1D_ocean_ice_column ;
1422      - compile C-grid dynamics with #define SEAICE_ALLOW_JFNK in FW test exp
1423        offline_exf_seaice (previously compiling B-grid).
1424    o pkg/exf:
1425      - fix some STOP conditions in exf_check.F (from Aug 28, modifs did not allow
1426        to specify neither just 1 comp of wind or wind-stress, nor no surface momentum
1427        forcing): just replace CPP option ALLOW_ATM_WIND with run-time param useAtmWind.
1428    o pkg/layers (adjust changes from Sept 19):
1429      - do snap-shot output and fill diagnostics from inside iLa loop (layers_calc.F)
1430        this allows to remove "layers_maxNum" dimension from all layers arrays.
1431    o pkg/layers (adjust changes from Sept 19):
1432      - remove ALLOW_LAYERS_OUTPUT ; fix snap-shot and time-ave output ;
1433      - snap-shot extended to all type of layers (not just the 1rst type);
1434      - remove layers variables when corresponding CPP option is undef.
1435    o pkg/layers:
1436      - rename pkg/layers variable and add new output (layer exist & un-weighted
1437        velocity in layer)
1438    o pkg/seaice:
1439      - simplify (?) ocean-drag coefficent computations by using
1440        the same routine in all three solvers (saves some code lines)
1441      - remove global fields DRAGA and DRAGS from C-grid code and
1442        declare them locally in lsr.F (the only place where they are
1443        still used)
1444      - update AD output of lab_sea.evp (very sensitive anyway).
1445    o pkg/seaice: add Jacobian-free Newton Krylov solver for ice dynamics
1446      (Lemieux et al. 2010, 2012). Turn on with the usual SEAICE_ALLOW_JFNK
1447      and SEAICEuseJFNK=.true. A few things to note:
1448      - involves a FGMRES, that is parallel but very inefficient,
1449        because of many scalar products (global sums) in the Gram-Schmidt
1450        orthogonalization method. Needs to be replaced. Original code
1451        from J.-F. Lemieux
1452      - preconditioner for FGMRES is a stripped down version of LSOR
1453      - SOLV_MAX_ITERS is now used for LSOR as a solver and as a
1454        preconditioner. For the preconditioner, the default is set to 10.
1455      - Jacobian times vector is computed with finite differences
1456      - marginally related to JFNK-solver: add a smooth regularization for
1457        zeta with tanh that will improve convergence (Lemieux and Tremblay,
1458        2009) for any implicit solver (not implemented for EVP because EVP
1459        does not need this regularization in the first place). Define
1460        SEAICE_ZETA_SMOOTHREG in SEAICE_OPTIONS.h to use.
1461    o eesupp/src:
1462      - check in genmake2 that intrinsic S/R flush is available.
1463      - add S/R to flush IO unit (if intrinsic S/R flush is available)
1464      - flush standard & error msg unit before MPI termination
1465      - if debugMode, flush IO unit after printing msg
1466    o pkg/ctrl:
1467      - ctrl_unpack.F, ALLOW_GENARR3D_CONTROL code: fix missing argument in call
1468        to ctrl_set_unpack_xyz.
1469    
1470    checkpoint64 (2012/10/09)
1471    o pkg/shelfice
1472      - in mom_fluxform.F, mom_vecinv.F:
1473        CALL SHELFICE_V_DRAG(bi,bj,k,vFld,KE,KappaRU,vF,myThid)
1474        Bug fix KappaRU -> KappaRV
1475        does not change verification/isomip but may change other setups
1476        (presumably constant KappaRU=KappaRV)
1477      - fix diagnostics SHIU/Vdrag (thanks to Tom Millgate)
1478    o pkg/obcs:
1479      - fixed some indexing bugs in obcs_seaice_sponge.F
1480      - added obcs relaxation subroutines for HSALT and HSNOW
1481      - changes verification/seaice_obcs/results/obcs_seaice_sponge.F
1482    o pkg/seaice:
1483      - add "multicategory" parameterization for snow in analogy to ice,
1484        default is off for now.
1485    o pkg/obcs:
1486      - added obcs_seaice_sponge.F for obcs relaxation of seaice variables;
1487        see verification/seaice_obcs/input.seaiceSponge for example application.
1488      - remove local commom bloc "OBCS_GLOBAL" in obcs_readparms.F and do all the OB
1489        index setting by master-thread. This fix multi-threads Pb in previous modifs.
1490    o pkg/layers :
1491      - add diagnostics to pkg/layers
1492      - move the meat of pkg/layers from layers_calc.F to layers_fluxcalc.F
1493        (from R.Tulloch). Layers_calc.F now calls layers_fluxcalc.F accordingly.
1494    o pkg/generic_advdiff/gad_implicit_r.F :
1495      - fix ADVr diagnostics in case of both implicit vertical advection and diffusion.
1496    o pkg/seaice/seaice_growth.F:
1497      - fix SItflux diagnostics in virtual salt flux + balanceEmpmr case.
1498    o pkg/obcs:
1499      - change default setting of OBCS_UVICE_OLD from defined to undef;
1500      - use new parameter OB_indexNone for null index value (instead of hard-coded 0)
1501        in all pkg/obcs code and in other pkgs; remove k loop in obcs_check_depths.F;
1502      - pass OB_indexNone as (new) argument to S/R CTRL_MASK_SET_[X,Y]Z;
1503      - change OB null index value (OB_indexNone) to -99 ; this fix the problem
1504        with Southern & Western OB at a tile edge (at least in a simple set-up).
1505    o pkg/obcs:
1506      - change settings of OB index in case OB coincides with tile edge (shared by
1507        2 tiles), so that common OB location is registered by both tiles (instead of
1508        only 1). However, for Southern and Western OB, index value = 0 is not
1509        recognized as valid OB index (=default null value) and needs to be fixed.
1510      - modify accordingly OBCS_BALANCE_FLOW and OBCS_MONITOR (avoid double counting)
1511      - new parameter "OB_indexNone" for null index value (for now, still zero)
1512        to replace hard-coded null index value of zero.
1513    o pkg/exch2:
1514      - improve W2_USE_E2_SAFEMODE (faster) and W2_E2_DEBUG_ON:
1515        always check buffer-size (but outside the loop); move checking for valid
1516        index from W2_USE_E2_SAFEMODE to W2_E2_DEBUG_ON; in W2_E2_DEBUG_ON,
1517        print each tile and point connection only if |W2_printMsg|>= 2 and 3.
1518    o pkg/ctrl (pack & unpack):
1519      - in ctrl_pack.F & ctrl_unpack.F, use the same local file-name variable
1520        (locally defined) for different variables (+ remove the variable-specific
1521        file name in CTRL_GENARR.h). For now, only implemented for GENARR2/3D_CONTROL
1522        (to be extended to other local file names in ctrl.h).
1523    o pkg/flt:
1524      - add a FLT_Iter0 option (similar to PTRACERS_Iter0).
1525    o pkg/mdsio:
1526      - fix missing STOP in mdsio_readvec_loc.F (case ioUnit=0) when file is missing
1527    o tools/genmake2:
1528      - add similar dependences for target EXE_AD & EXE_FTL as we have for EXECUTABLE
1529        (added by Alistair in version 1.51 for building without make depend);
1530      - remove Header files list (H_SRC_FILES) from the dependence of targets
1531         ad_input_code.f & ftl_input_code.f (not clear why it was added in the first
1532        place in version 1.23): this save going through staf when unrelated header
1533        file has been modified.
1534       Note: for an intermediate target (e.g., ad_input_code.f or adtaf) without
1535        "make depend" step, still need to do "make links" before "make adtaf".
1536    o eesupp/src (+ few pkg src files) & genmake2:
1537      - finish to remove ALWAYS_USE_MPI in source code that TAF does not see;
1538      - no longer set ALWAYS_USE_MPI in Makefile (was done by genmake2).
1539      - improve genmake2 checking for ALLOW_${PKG} in CPP_OPTIONS.h files (distinguish
1540         upper/lower case ; account for space between "#" and undef/define)
1541    o pkg/flt (with exch2):
1542      - cleaning: fix so that it compiles; move remaining MPI calls out of flt_exch2.F;
1543      - simplify threads synchronisation; fix (many issues) multi-threaded with MPI.
1544    
1545    checkpoint63s (2012/09/05)
1546    o pkg/ecco:
1547      - remove #ifdef ALLOW_SMOOTH_CORREL3D brackets.
1548      - add more relevant #ifdef ALLOW_SMOOTH ones.
1549      - sort out useAtmWind, useSMOOTH, ctrlSmoothCorrel2D.
1550    o pkg/ctrl:
1551      - CTRL_OPTIONS.h : document CPPs related to smoothing; ALLOW_SMOOTH_CORREL2D/3D,
1552        ALLOW_CTRL_SMOOTH, ALLOW_SMOOTH_CTRL2D, ALLOW_SMOOTH_CTRL3D.
1553      - ctrl.h : document run time params doInitXX, doMainPack, doMainUnpack, doPackDiag,
1554        doSinglePrecTapelev (audodiff param!), ctrlSmoothCorrel2D (new) and
1555        ctrlSmoothCorrel3D (new).
1556        The added ctrlSmoothCorrel2D/3D replace the old ALLOW_SMOOTH_CORREL2D/3D CPP.
1557      - ctrl_readparms.F : initialise ctrlSmoothCorrel2D/3D and read from namelist.
1558      - ctrl_init.F ctrl_pack.F ctrl_unpack.F : switch off ustress/vstress
1559        controls when useAtmWind, and vice versa.
1560      - ctrl_map_ini_ecco.F : UVEL0, VVEL0, edtaux, edtauy cannot be smoothed as tracers.
1561      - ctrl_get_gen.F : replace #ifdef ALLOW_SMOOTH_CORREL2D with
1562          #ifdef ALLOW_SMOOTH, IF ctrlSmoothCorrel2D, IF useSMOOTH.
1563      - ctrl_map_ini_gen.F : replace #ifdef ALLOW_SMOOTH_CORREL3D with
1564          #ifdef ALLOW_SMOOTH, IF ctrlSmoothCorrel3D, IF useSMOOTH.
1565      - ctrl_set_pack_xy[z].F, ctrl_set_unpack_xy[z].F:
1566        replace ALLOW_SMOOTH_CORREL2D/3D brackets with ctrlSmoothCorrel2D/3D.
1567    o pkg/smooth:
1568      - remove un-necessary includes.
1569      - remove ALLOW_SMOOTH*D and ALLOW_SMOOTH_CORREL*D brakets.
1570        Those CPP options were never defined, and not necessary.
1571    o model/src:
1572      - fix CPP brackets in ini_mixing.F (GM_background_K belongs to gmredi).
1573      - standard treatment of useSMOOTH.
1574    o pkg/autodiff:
1575      - add LOGICAL useGGL90inAdMode, useGGL90inFwdMode, useSALT_PLUMEinAdMode,
1576        useSALT_PLUMEInFwdMode allowing to switch off ggl90 and salt_plume adjoint.
1577    o pkg/exch2:
1578      - add "if usingMPI" where it was missing (in exch2_rx?_cube*.template)
1579        + start to remove ALWAYS_USE_MPI in source code that TAF does not see.
1580      - make new S/R W2_MAP_PROCS out of w2_eeboot.F to setup exch2 CommonFlag
1581        and tiles to process mapping.
1582      - re-arrange 3 header files (W2_EXCH2_PARAMS.h, _BUFFER.h & _TOPOLOGY.h)
1583        moving /EXCH2_FILLVAL_RX/ & /W2_EXCH2_COMMFLAG/ to W2_EXCH2_TOPOLOGY.h;
1584        rename "exch2_tProc" to "W2_tileProc" and move seting of e2FillValue_RX
1585        from w2_eeboot.F to w2_readparms.F.
1586    o eesupp/src:
1587      - set exchNeedsMemsync & exchUsesBarrier according to "usingMPI" (instead of
1588        ALWAYS_USE_MPI) + moved from ini_communication_patterns.F to eeset_parms.F;
1589        also move setting of exchCollectStatistics from exch_init.F to eeset_parms.F
1590      - in eedie.F and all_proc_die.F, always call MPI_FINALIZE when ALLOW_USE_MPI
1591        is defined (remove condition on usingMPI) to match cases where MPI_INIT
1592        has been called.
1593      - fix bug I put in previous modif of exch_sm_3d_rx.template (not much used);
1594      - change default (non-MPI) value of myPid (from 1 to 0) to match MPI settings
1595        (so that on 1 proc, get same myPid independently of usingMPI)
1596      - add a stop if multi-procs but usingMPI=F ; stop also if usingMPI=T and
1597        useCubedSphereExchange with EXCH-1 (safer).
1598      - add "if usingMPI" where it was missing (+ start to remove ALWAYS_USE_MPI).
1599    o pkg/ggl90:
1600      - fix bug in filling corner mask array "mskCor" (FILL_CS_CORNER_TR_RL call)
1601        used in ALLOW_GGL90_SMOOTH code.
1602    o pkg/flt:
1603      - fix typo in FLT_WITHOUT_Y_PERIODICITY (the effect was to ignore stopping
1604        floats at the Southern end of the domain).
1605    o eesupp/inc:
1606      - add a list of CPP-options which can be set by Makefile (DEF_IN_MAKEFILE.h);
1607        but not used (and not to be used) anywhere, just for documentation.
1608    o pkg/autodiff, exf, ptracers & seaice (AD & TL output):
1609      - comment out the very nasty "writeBinaryPrec = writeStatePrec" line, since:
1610        a) can damage previously written records in any other multi-record files.
1611        b) if needed, can easily do it cleanly, by calling S/R WRITE_REC_3D_RL/S.
1612    o tools/genmake2:
1613      - define variable MAKE within Makefile and use it in place of 'make';
1614      - update AD_CONFIG.h (if needed) before building any of the executable
1615        (forward, adjoint or tangent-lin); this involves a 2nd invocation of make;
1616        and add the usual #ifndef/#define AD_CONFIG_H in AD_CONFIG.h;
1617      - always print usual warning comment 'this file is automatically generated'
1618        from script convert_cpp_cmd2defines (+ remove this warning from genmake2).
1619    o pkg/cheapaml:
1620      - updated to correspond to the code used in accepted paper (Nico Wienders).
1621    o pkg/exf:
1622        added run time switch useAtmWind to replace ALLOW_ATM_WIND cpp switch.
1623        ALLOW_ATM_WIND now just sets the useAtmWind default (see exf_readparms.F)
1624        and force defines ALLOW_BULKFORMULAE (EXF_OPTIONS.h).
1625    o pkg/exf, autodiff, ctrl, ecco and seaice:
1626        remove ALLOW_ATM_WIND brackets, or replace them with useAtmWind ones.
1627    o pkg/ctrl, ecco:
1628        allow to compile both ALLOW_U/VSTRESS_CONTROL and ALLOW_U/VWIND_CONTROL.
1629        Depending on useAtmWind, one is inactive, and the other is active (see
1630        exf_getffields.F/exf_getsurfacefluxes.F).
1631    o tools/genmake2:
1632      - improve error msg when failing in 2nd test of check_for_broken_Ff
1633      - fix option '-makefile' short-name (-mf according to genmake2 -help)
1634      - source local config file "genmake_local" just after processing the genmake2
1635        command arguments (previously done before processing arg).
1636    o pkg/grdchk:
1637      - add a call to TURNOFF_MODEL_IO for Tangent-Linear run (in this case, call
1638        to this routine from cost_final has been dropped in g_cost_final)
1639      - improve printed information (more explicit msg, no longer using "print *,"
1640         fix fcpertminus printed value).
1641    o model/src:
1642      - move call to COST_INIT_VARIA out of packages_init_variables.F directly
1643        into initialise_varia.F (just after calling PACKAGES_INIT_VARIABLES):
1644        this prevents getting cost-funct reset in adinitialise_varia recomputations.
1645    o pkg/dic:
1646      - move initialisation of "freefe" array from from dic_biotic_forcing.F to
1647        fe_chem.F: this prevents TAF from dropping this initialisation in TLM code.
1648    o pkg/grdchk:
1649      - grdchk_main.F : added CALL GLOBAL_SUM_INT( ierr , myThid )
1650      - grdchk_getadxx.F etc. : omit I/O if ierr.EQ.0
1651    o pkg/autodiff/ctrl/grdchk :
1652      - attempt to sort out what works and what does not,
1653        with regard to I/O, and to warn/stop accordingly.
1654    o pkg/grdchk:
1655      - attempt to fix grdchk in the case of useSingleCpuIO.
1656      - "if ( myProcId .EQ. grdchkwhichproc .AND. ierr .EQ. 0 )"
1657       statements were moved from grdchk_main.F and into
1658       grdchk_getadxx.F grdchk_getxx.F grdchk_setxx.F.
1659      - a global sum is applied to record numbers icvrec/layer
1660       out of grdchk_loc so that they be passed to I/O routines.
1661    o pkg/smooth:
1662      - fix recomputation that appeared with nlfs : use smooth_recip_hFacC,
1663        smooth_hFacW, smooth_hFacS (copied at init_fixed) in 3d case.
1664    o verification/testreport:
1665      - add option '-tlm' for Tangent-Linear test (-adm,-oad,-tlm are all exclusive);
1666      - can also use compressed (gzip) reference output file;
1667      - change format (in pkg/grdchk) of TLM output (+ add forward gradient)
1668        to be easier to collect by testreport.
1669      - update existing TLM output (half out-of-date by more than 3 yrs).
1670      - report NETCDF & LAPACK settings (from genmake2) in output dir.
1671      - report run-time in each individual summary (previously only for AD test);
1672        for TLM test, add also TAF version.
1673      - add daily TLM test on (old) aces cluster + weekly test on baudelaire.
1674    
1675    checkpoint63r (2012/08/15)
1676    o tools/genmake2:
1677      - fix Makefile for target ftlall (+ update files to clean after make ftlall)
1678    o pkg/ecco/ecco_cost_final.F :
1679      - fix fc print statements (to stdout and costfunction0000) so
1680        that the printed value is always after the global sum.
1681    o pkg/seaice/seaice_dynsolver.F :
1682      - fix ice strength assymptote at SEAICE_area_max<1
1683        (no change for the standard case of SEAICE_area_max=1)
1684    o some cleaning:
1685      - pkg source files: ensure that all *.F files from each pkg included the
1686        corresponding ${PKG}_OPTIONS.h file (except stand-alone src file which
1687        only includes CPP_EEOPTIONS.h); fix S/R CTRL_SMOOTH ; update AD experiment
1688        code_ad/*.F src files; add new option-file in pkg/admtlm + corresponding
1689        includes;
1690      - model/src: add PACKAGES_CONFIG.h wherever ALLOW_AUTODIFF[_TAMC] is used.
1691      - ALLOW_DIFFKR_CONTROL: add a stop in S/R CTRL_CHECK in case ALLOW_3D_DIFFKR
1692        is undef; also define /DYNVARS_DIFFKR/ common block in DYNVARS.h when
1693        ALLOW_DIFFKR_CONTROL is defined, to allow to compile and reach this stop.
1694      - update option-file CPP_OPTIONS.h of all AD experiments:
1695        * no longer include PACKAGES_CONFIG.h ;
1696        * includes ECCO_CPPOPTIONS.h if PACKAGES_CONFIG.h has been included ;
1697        * def/undef ALLOW_3D_DIFFKR independently of ALLOW_DIFFKR_CONTROL (before
1698          including ECCO_CPPOPTIONS.h).
1699    o pkg/cost, pkg/ctrl, pkg/ecco option-file:
1700      - clean-up and split content of old pkg/ecco/ECCO_CPPOPTIONS.h file into
1701        separated pkg option-file (done according to old doc from ECCO_CPPOPTIONS.h,
1702        not necessary accurate).
1703      - add a template for option-file ECCO_CPPOPTIONS.h, mostly empty, in
1704        pkg/autodiff, i.e., the 1rst pkg to compile for adjoint built, with lines to
1705        deliberately break compilation (a remainder that it needs to be customized)
1706      - in pkg/ecco, includes ECCO_OPTIONS.h instead of COST_OPTIONS.h
1707      - rename COST_CPPOPTIONS.h to COST_OPTIONS.h
1708      - rename CTRL_CPPOPTIONS.h to CTRL_OPTIONS.h
1709    o tools/genamke2:
1710      - check for lapack.
1711    o pkg/cost and pkg/ecco : attempt to sort out some of the limiting intricacies.
1712      - pkg/cost.cost_final.F : allow for use of pkg/ecco and pkg/cost cost functions
1713        jointly. The exclusive ifdefs were removed, to add costs terms (when defined)
1714        from both packages.
1715      - the fc global sum in pkg/ecco/ecco_cost_final.F was removed accordingly.
1716      - for objf_atl we use either the pkg/ecco or the pkg/cost term depending on CPPs.
1717      - pkg/ecco and model/src : add CPP brackets around pkg/cost and pkg/ctrl includes
1718        of "CTRL_SIZE.h" "ctrl.h" "ctrl_dummy.h" "optim.h" / "cost.h" accordingly.
1719    o pkg/cost : add comments to explain special and/or untested setups.
1720    o pkg/exf:
1721      - use EXF_OPTIONS.h to set pkg/exf options except if done in ECCO_CPPOPTIONS.h
1722        (previously, ALLOW_AUTODIFF_TAMC was controling this switch).
1723    o verification/*/code_ad:
1724      mimimal cleaning of AD experiments ECCO_CPPOPTIONS.h option-file:
1725      - reccord when this file is included (define ECCO_CPPOPTIONS_H)
1726      - remove the most obvious obsolete features (e.g., #define ALLOW_COST not
1727        allowed since Oct 2003 in any option-file except in PACKAGES_CONFIG.h)
1728    o pkg/seaice :
1729      - added possibility to change ice strength/PRESS0 relationship to
1730        HEFF, according to the following run time parameters
1731        SEAICEpresPow0 :: HEFF exponent for ice strength below SEAICEpresH0 (integer, >0)
1732        SEAICEpresPow1 :: HEFF exponent for ice strength above SEAICEpresH0 (integer, >0)
1733        SEAICEpresH0   :: HEFF threshold for ice strength            (m)
1734    o pkg/ggl90 :
1735      - added run time flag mxlSurfFlag to include the code that ensure
1736        mixing between first and second level (previously included as a comment)
1737    o verification/1D_ocean_ice_column/input_ad/data.autodiff :
1738      - add test of newly added dumpAdByRec=T option where
1739        we write all records to one file per variable.
1740    o verification/global_ocean.cs32x15/code_ad/CPP_OPTIONS.h :
1741      - switch to #define ALLOW_BALANCE_RELAX and ALLOW_BALANCE_FLUXES
1742        to check that this code is ok with taf and compiles in adjoint.
1743    o pkg/autodiff :
1744      - added run time param dumpAdByRec : ad dump format switch.
1745        If true then write all records to one file per variable.
1746        Else write one file per record (remains the default).
1747      - revise seaice_ad_dump.F and exf_adjoint_snapshots_ad.F accordingly.
1748    o pkg/seaice:
1749     - Added SEAICEuseTILT run time switch : if set to
1750       false then omit the tilt term in seaice dynamics.
1751     - Fix free drift calculation.
1752    o pkg/shelfice:
1753      When initializing SHELFICEDragQuadratic, set default to be
1754      consistent with shiCdrag in case SHELFICEuseGammaFrict is used,
1755      but retain option to set it independently
1756      (inconsistenty spotted by Veronique Dansereau)
1757    o eesupp/inc:
1758      - in EEPARAMS.h, add real-type constant for some frequently used simple number
1759         (0,1,2,1/2), with name explicitly referring to RS/RL type.
1760    o model/src:
1761      - move balancing of relaxation terms to new S/R balance_relax.F.
1762    o pkg/autodiff:
1763      re-write active I/O high-level (control) S/R:
1764      - rename  S/R ACTIVE_READ/WRITE_RL to ACTIVE_READ/WRITE_3D_RL
1765      - add 1 more argument (useCurrentDir) to replace the "_LOC" 2nd set of S/R.
1766      - use standard pkg/mdsio I/O routines (MDS_READ/WRITE_SEC_XZ/YZ  and
1767        MDS_READ/WRITE_FIELD); change loops to multi-threads.
1768      - update and merge active_file_control_slice.flow into active_file_control.flow
1769      - update the calls in lower level S/R (active_file.F, active_file_g.F and
1770        active_file_ad.F) keeping the argument list and function unchanged.
1771      - also update lower-level "_LOC" version (call same S/R with "useCurrentDir
1772        =.TRUE.") and remove high-level (control) _loc version (not called anymore).
1773      - new low-level active I/O routines, one for each type (RL/RS), for active var
1774        of various (XY,XZ,YZ) shape and level number (arguments: arrShape, myNr);
1775        fix ctrl_init_wet.F & ecco_cost_weights.F by calling the new S/R with the
1776        right type.
1777    o autodiff and RS=real*4:
1778      - call the right type (_RS instead of _RL) of S/R in few output S/R (pkg/exf
1779        ad-monitor and snapshots); disable arrType='RS' in mdsio_gl*.F ;
1780      - change argument type of 3-D mask argument to _RS to match type in the call
1781        (in seaice_cost*.F, ctrl_*_gen.F and *ctrl_bound.F); to be continued.
1782    o pkg/thsice:
1783      - re-anable balanceEmPmR when useSEAICE=T with useThSIce=T.
1784      - option to correct ocean fresh-water flux for imbalance of Atmos+Land
1785        fresh-water flux: uniform correction or proportional to local precip.
1786    o pkg/ctrl:
1787      - new header file CTRL_SIZE.h for parameters maxCtrlArr2D, maxCtrlArr3D
1788      - redefine CPP option ALLOW_BOTTOMDRAG_CONTROL to
1789                            ALLOW_BOTTOMDRAG_CONTROL_NONGENERIC
1790      - verification/hs94.1x64x5/ tests ALLOW_GENARR{2D,3D}_CONTROL
1791    
1792    checkpoint63q (2012/07/30)
1793    o pkg/autodiff:
1794      note about monitor and snap-shot of ad-variables:
1795      a) need to apply ADEXCH before monitor or output of ad-vars to include
1796       overlap contributions (was done for adjDump but missing for monitor).
1797      b) since ADEXCH implies adding overlap values to interior array, machine
1798       truncation error is expected when adding an ADEXCH call in the middle of
1799       the time-stepping (although mathematically identical).
1800      modifs:
1801      - fix some incorrect type (RL/RS, UV/scalar) in ADEXCH calls and ad-vars
1802        declaration (adEddyPsiX,adEddyPsiY in adcommon.h).
1803      - add new run-time params (dumpAdVarExch & mon_AdVarExch) to select how  to
1804        apply ADEXCH before monitor or snap-shot of ad-variables:
1805           =0 : no ADEXCH ; =1 : do ADEXCH ; =2 : apply ADEXCH on a local copy.
1806      - implement new method (copy+adexch) for snap-shot and monitor of main model
1807        ad-vars (initially not used by default -> output unchanged).
1808      - change default (set to 2) to use new method and update few output_adm.txt
1809        with accurate ad-monitor (global_ocean.90x40x15, tutorial_global_oce_biogeo
1810        and both tutorial_tracer_adjsens tests).
1811      - switch 2 global_ocean.cs32x15 AD-tests to AB-2 (seaice_dynmix & thsice)
1812        and turn off momDissip_In_AB in the 2 other (needed for stable AB-3).
1813    o pkg/ctrl:
1814      enable the use of a variable number (maxCtrlArr2D, maxCtrlArr3D) of
1815      generic control variables via
1816      #define ALLOW_GENARR2D_CONTROL and/or #define ALLOW_GENARR3D_CONTROL
1817      Only required customization should be S/R ctrl_map_ini_genarr.F
1818      (routine in repository contains example)
1819    o pkg/exf:
1820      - fix and refine checking of surface-relaxation setting when using EXF
1821    o verification (adjoint exp):
1822      - reduce length of simulation by half for experiment global_ocean.cs32x15
1823        (std, seaice & seaice_dynmix) and exp tutorial_dic_adjoffline; update output.
1824    o pkg/mom_common (mom_u/v_bottomdrag), pkg/shelfice (shelfice_u/v_drag)
1825      - replace if statements KE.ne.0 with KE.gt.0 to avoid sqrt of negative numbers
1826        of KE that can occur with aggressive optimization
1827      + put quadratic bottom drag calculation in separated loops (only done if
1828        using bottomDragQuadratic)
1829    o model/src: CG2D_NSA
1830      - clean-up:  stop if cg2dNormaliseRHS=T and AUTODIFF
1831         and replace GLOBAL_SUM calls with GLOBAL_SUM_TILE.
1832      - in test-exp that uses CG2D_NSA (bottom_ctrl & tutorial_tracer_adjsens),
1833         change cg2d residual target to be expressed in Wunits (=> do not normalise
1834         RHS ; this fix global_max Pb with TAF); update output.
1835    o verification/tutorial_tracer_adjsens:
1836       improve parameter consistency (and get rid of warnings):
1837       - use deltaTFreeSurf=deltaTtracer (better with NonLin FreeSurf);
1838       - switch Temp Adv Scheme from 81 to 80 (no limiter since theta < 0 is physical)
1839       - use staggerTimeStep (for stability) in som81; use default rotation period.
1840    o pkg/exch2:
1841      - with empty facet: fix compact-format (W2_mapIO=1) definition (was previously
1842        reset to 0 = 1 long line in X)
1843    o pkg/mdsio:
1844      - fix reading of dimensions from meta file for large-size domain
1845    o model/src:
1846      - fix saltIsActiveTr setting for IdealGas eosType (eosType is 6 character long);
1847      - to refine CS-grid check, add logical flag "hasWetCSCorners": true if using
1848        Cubed-Sphere Exch with CS-corners inside the domain;
1849        make new S/R INI_GLOBAL_DOMAIN from code in ini_linear_phisurf.F to calculate
1850        globalArea and to set hasWetCSCorners.
1851      - add warning if usingCurvilinearGrid and momAdvection in flux-form (missing
1852        metric terms); stop if hasWetCSCorners=T and momAdvection in flux-form.
1853      - re-activate the stop if useCDscheme and hasWetCSCorners=T (previously if
1854        useCDscheme and useCubedSphereExchange).
1855    o pkg/seaice/seaice_growth.F :
1856      - compute the SEAICE_DISABLE_HEATCONSFIX term accordingly
1857        for the (.NOT.useRealFreshWaterFlux).OR.(nonlinFreeSurf.EQ.0)
1858        when the previous code was not correct.
1859      - in all cases diagnoze the boundary condition mismatch to SIaaflux
1860      - in the case of useRealFreshWaterFlux.AND.(nonlinFreeSurf.GT.0) add
1861        that term to QNET (essentially to set the melt/freeze water to 0degC).
1862        when SEAICEheatConsFix is true, so that the ocean+ice budget heat is closed.
1863    o verification/global_ocean.cs32x15/input.seaice :
1864      - add SEAICEheatConsFix in data.seaice, ensuring closed ocean+ice heat budget.
1865      - add diagnostics (commented out) for budget test using my matlab codes (gcmfaces).
1866      - update results (output.seaice.txt) accordingly.
1867    o verification/lab_sea/input/data.seaice :
1868      - remove SEAICEheatConsFix, which is now be tested
1869        in global_ocean.cs32x15. The presently coded fix
1870        is only consistent with real fresh water + nlfs.
1871      - update results (output.txt) accordingly.
1872    o pkg/salt_plume: added diagnotic for salt tendency (oceSPtnd).
1873    o AD_CONFIG.h file:
1874      - in genmake2: remove "#undef ALLOW_ECCO_OPTIMIZATION" from AD_CONFIG.h;
1875      - remove #include "AD_CONFIG.h" from all included OPTIONS files and
1876        add it explicitly in each fortran src file where it is needed.
1877        motivation: header file AD_CONFIG.h is generated/modified after "make depend"
1878        thus introducing potentially wrong dependency; therefore, better to include
1879        it only where it's really needed, and after any other included OPTIONS file
1880        (less tempting to bring conditional includes according to ALLOW_ADJOINT_RUN
1881        or ALLOW_TANGENTLINEAR_RUN).
1882    
1883    checkpoint63p (2012/07/06)
1884    o pkg/autodiff:
1885      - rename S/R INI_AUTODIFF to AUTODIFF_INIT_VARIA ;
1886      - create new header file "AUTODIFF_PARAMS.h" for pkg/autodiff parameters
1887        which are now read from new parameter file "data.autodiff" (inAdExact
1888        previously in "data", use{KPP/GMRedi/SEAICE}inAdMode previously in data.pkg)
1889      - add file "data.autodiff" in all verification/*/input_ad/ directories.
1890      - add run-time parameter to turn On/Off SEAICEuseFREEDRIFT in adjoint/forward
1891        mode (used in global_ocean.cs32x15.seaice_dynmix test exp.)
1892    o verification/tutorial_tracer_adjsens/
1893      - add extra sub-verification which uses "SOM" advection scheme
1894        (2nd Order-Moment Advection Scheme, Prather Limiter) with
1895          #define GAD_ALLOW_TS_SOM_ADV in GAD_OPTIONS.h
1896        and in data:
1897          multiDimAdvection=.TRUE.,
1898          tempAdvScheme=81,
1899          saltAdvScheme=81,
1900    o model/src:
1901      - introduce ALLOW_BALANCE_RELAX which allow the removal
1902       of the global mean of relaxation terms by setting
1903       balanceThetaClimRelax and balanceSaltClimRelax
1904      - disable balanceEmPmR and balanceQnet in the case when useSeaice.
1905       This case is now treated appropriately in seaice_growth.F
1906    o pkg/seaice:
1907      - do balanceEmPmR and balanceQnet based on the net fluxes
1908        (SItflux) that enter the ocean+ice system rather than QNET
1909        and EMPMR. Works best in real fresh water.
1910      - SIatmFW, SIatmQnet, and SItflux computations had to be moved
1911        out of the diagnotics bloc, and stored in global arrays.
1912    
1913    checkpoint63o (2012/06/29)
1914    o vertical mixing schemes:
1915      - remove unused S/R CALC_BUOYANCY (left from branch-atmos merging)
1916      - replace computation of density (in Function STATE1, opps_calc.F) by a call
1917        to S/R FIND_RHO_SCALAR
1918      - pass sigmaR to S/R PP81_CALC, MY82_CALC (but not yet used) and to GGL90_CALC
1919        and use it for N^2 calculation in ggl90_calc.F (save 2 density computations);
1920        affects output (vermix.ggl90) at truncation level.
1921    o testreport:
1922      - change adjustment of SIZE.h for mpi+mth testing: preserve enough tiles
1923        (nSx,nSy) for the number of threads (from eedata.mth)
1924    o model/src:
1925      - remove 2nd set of calls at the top of initialise_varia.F (Adjoint part)
1926        related to Non_Lin Free-Surf or Bottom-Control (but not longer necessary).
1927    o verification/tutorial_tracer_adjsens/
1928      - compile with ALLOW_CG2D_NSA
1929      - run with nonlinFreeSurf=3
1930      - update reference output_adm.txt
1931    o tools/genmake2:
1932      - add "-DHAVE_NETCDF" to the DEFINES list when NetCDF is available ;
1933        refine usePROFILES switching off (only when NetCDF is not available).
1934    o verification (atmospheric set-up):
1935      - change eosType='IDEALGAS' to eosType='IDEALG' to match variable declaration
1936    o pkg/profiles : refine profiles and files handling.
1937    o model/src and pkg/ecco : introduce run-time switch usePROFILES.
1938    o model/src/the_main_loop.F, forward_step.F and pkg/exf/EXF_OPTIONS.h :
1939      - changes to use model/src/the_main_loop.F rather than the ecco version
1940        in ecco type adjoint runs.
1941    o model/src:
1942      - move computation of recip of grid distance & area from INI_MASKS_ETC to INI_GRID
1943      - move setting of h0Fac[C,W,S] from INI_LINEAR_PHISURF to INI_MASKS_ETC
1944      - update_masks_etc.F: rename SMOOTH*_R4,R8 function to the corresponding type (RS,RL)
1945    o model/src:
1946      - fix S/R UPDATE_CG2D for ALLOW_DEPTH_CONTROL case (was empty before);
1947        update output of test experiment bottom_ctrl_5x5.
1948    o pkg/generic_advdiff:
1949      - implement vertical bi-harmonic diffusion (for now, only for T & S and
1950        only explicitly).
1951    o verification/bottom_ctrl_5x5/
1952      update reference output (results changed quite some time ago,
1953      not sure when; but new reference results look ok in terms of grdchk)
1954    o verification/1D_ocean_ice_column/
1955      For verification purposes, the exact adjoint rather than an approx.
1956      should be used (e.g., to comare against F.D. or TLM).
1957      removed autodiff_inadmode*_ad.F routines in code_ad/
1958      Update results/ accordingly.
1959    o pkg/cal:
1960      - change cal_getdate.F so that output date is function of input time only
1961        (less ambiguous, not mixed up with input iteration number).
1962      - fix calendarDumps for non-zero phase-lag (S/R CAL_TIME2DUMP).
1963    o pkg/diagnostics:
1964      - implement calendarDumps also for stats-diags
1965      - implement calendarDumps also for snap-shot output (negative freq)
1966      - for now, ignores calendarDumps if non-zero phase-lag.
1967    
1968    checkpoint63n (2012/06/04)
1969    o model/src:
1970      - recompute rSurfW & S to ensure consistent column thickness (needed for rStar)
1971        between Sum_k(hFac*drF) and rSurf-rLow, for now only when using pkg/shelfice;
1972      - use h0FacC, W & S to compute hFac_surfC, W & S in calc_surf_dr.F (more
1973        similar to calc_r_star.F); update results of experiment internal_wave and
1974        tutorial_global_oce_in_p (affected @ truncation level).
1975    o pkg/shelfice:
1976      - add parameterisation of advective-diffusive flux into the ice shelf
1977        according to Holland and Jenkins (1999), eq.22-33, as suggested by Jan De Ryd
1978      - simply eps3/3a computation
1979    o eesupp:
1980     - add new CPP option (DISCONNECTED_TILES) to disconnect tiles (no exchange
1981       between tiles, just fill-in edges assuming locally periodic subdomain) and
1982       add corresponding exchange subroutines (EXCH0);
1983     - new CG-solver version (_EX0) for disconnected-tiles special case.
1984    o model/src (CG-solvers):
1985     - modify Single-Reduction version (CG2D_SR) in case cg2dMaxIters is reached
1986       (similar final residual output and max-Iter number as with standard version);
1987     - allows to store and use lowest-residual solution (standard & _SR versions);
1988     - cleaning up (remove old, commented out code, LETS_MAKE_JAM ...).
1989     - by default, also compile CG2D_SR version (define ALLOW_SRCG in CPP_OPTIONS.h)
1990    o eesup/src:
1991     - global_vec_sum.F cleaning: add a BARRIER ; update comments ; remove ndef
1992       ALWAYS_USE_MPI (no longer needed after fixing usingMPI settings - March 2012)
1993    o pkg/salt_plume added to lab_sea/input_ad.noseaicedyn
1994    
1995    checkpoint63m (2012/04/27)
1996    o pkg/shelfice:
1997     - account for partical cells in surface level below ice-shelf for hydrostatic
1998       pressure calculion (set uniformFreeSurfLev to F); update isomip experiments.
1999    o ad test experiments:
2000     - update and rename to "ad_optfile.local" local AD-optfile specific to a
2001       particular adjoint verification experiment (in verification/*/code_ad/)
2002    o pkg/seaice & pkg/exf:
2003     - Part two of ECCO-CLIVAR code merges.
2004       Completes merge of seaice area relax. code.
2005       Requires unified CPP option EXF_ALLOW_SEAICE_RELAX
2006       to be set in EXF_OPTIONS.h since this pkg controls its I/O
2007       (and avoids second CPP option in SEAICE_OPTIONS.h)
2008     - change default value of costIceStart & costIceEnd to a valid date.
2009     - add snowPrecip to HSNOW in seaice_growth
2010    o pkg/ptracers:
2011     - move ptracers summary and setup check into separated S/R ; add a check for
2012       valid PTRACERS_Iter0 value (error+stop or just warning).
2013    o pkg/cal (+ pkg/ecco):
2014     - avoid calling a S/R with 2 times the same arg (FWD: unless both are only used
2015       as input; and for AD, unless both are not differentiable (e.g., k index)).
2016    o model/src:
2017     - define internal flag "uniformFreeSurfLev" (=T when free-surface level-index
2018       is everywhere k=1) to speed-up some calculations (by pass kSurf reference);
2019       temporary set to usingZCoords value (to be changed to F when using shelfice).
2020     - hydrostatic pressure: implement partial cell near the surface also for
2021       Z-coordinates (for the case where uniformFreeSurfLev=F); replace test on
2022       usingZCoords with test on uniformFreeSurfLev where needed (in NonHyd code).
2023    o pkg/ctrl/ctrl_init.F:
2024     - add a formal parameter to s/r ctrl_init_rec to print
2025       xx_$(ctrl_valiable)_file for easier debugging
2026     - move call of cal_* routines into the if-block where they are really
2027       needed so that xx_$(ctrl_variable)_period can be 0 or -12 without having
2028       to specify a startdate
2029    o pkg/seaice:
2030     - update comments in SEAICE_OPTIONS.h (+ similar update of lab_sea/code and
2031       global_ocean.cs32x15/code versions).
2032     - turn on seaice Multi-category (in data.seaice, SEAICE_multDim=7) for
2033       verification experiment global_ocean.cs32x15.seaice and update results.
2034    o pkg/exf:
2035     - new S/R EXF_GETFIELD_START to return starting-time of a forcing field
2036       (according to useExfYearlyFields).
2037    o pkg/cal:
2038     - move calendar setting & summary (previously in cal_readparams.F) into new
2039       S/R CAL_INIT_FIXED to be called later in the initialisation process, once
2040       length of the simulation is set (after SET_PARMS call); This is an attempt
2041       to fix Pb when, e.g.: pkg/longstep, modifies the length of the run.
2042     - For safety: keep a record of pkg/cal parameter settings status
2043               to allow to STOP if one pkg/cal S/R is called too early.
2044     - add a stop in all basic pkg/cal subroutines if called before setting is done.
2045     - modify cal_getdate.F: stop when nothing was returned;
2046       if called with myIter=-1, simply retrun modelBaseDate (1,2 = startDate_1,_2);
2047       this allows to remove "cal.h" from seaice_read_parms.F & init_mnc_vars.F.
2048    
2049    checkpoint63l (2012/04/04)
2050    o pkg/bbl:
2051      - fix call to FIND_RHO_2D in bbl_calc_rho.F (case multi-tiles per proc);
2052        update global_with_exf output.yearly.txt file.
2053    o pkg/cal:
2054      - start to clean-up cal_set.F ; fix for the case where baseTime is non-zero.
2055      - remove 2 unsused and very short (1 line only) functions ;
2056      - remove unsused subroutines from AD-Diff list.
2057    o model/src:
2058      - start to implement clean wait to stop in initialization S/R (config_check.F,
2059         packages_check.F, ini_parms.F and pkg/obcs/obcs_check.F + pkg/mypackage)
2060    o folowing PRINT_MESSAGE changes:
2061      - remove reminder multiple print to the same file (STDOUT) when multi-threads.
2062    o pkg/bbl:
2063      - modification so it can work with z*
2064      - replace deltaT with dTtracerLev(k) for asynchronous time stepping
2065      - global_with_exf/input.yearly verification; changes output.yearly.txt
2066    o eesupp/src:
2067      - PRINT_MESSAGE: use OpenMP critical instruction (similar to PRINT_ERROR);
2068        writing to unit 0 (if unit=errorMessageUnit) extended to the case myThid=1
2069      - CHECK_THREADS: specific code if using OpenMP threading: improve checking of
2070        # of threads across processors (e.g., different env OMP_NUM_THREADS setting)
2071      - improve special preliminary call to EESET_PARMS (if eedata is read 2 times).
2072      - when using MPI, always set usingMPI=T ; set default accordingly and stop
2073        if not consistent.
2074      - ALL_PROC_DIE: add a BARRIER after MPI_FINALIZE call ; skip this when thread
2075        argument is zero (in case called within single-thread section).
2076    o pkg/fizhi:
2077        clean-up turbulence cold-start switch: decided in fizhi_init_vars.F, stored
2078        in common bloc (fizhi_coms.h) and then passed as argument up to S/R TURBIO.
2079    o pkg/exch2:
2080      - add argument "updateCorners" to S/R exch2_get_uv_bounds (enable to
2081        activate EXCH_IGNORE_CORNERS in vector EXCH S/R).
2082      - switch 1rst EXCH call to IGNORE_CORNERS (instead of UPDATE_CORNERS)
2083        but keep the 2nd with UPDATE_CORNERS: this prevents overwriting good data
2084        with bad ones coming from a not-yet-updated halo.
2085        This should fix the problem when sNx <> sNy and GCD(sNx,sNy) < 2*Olx.
2086    o pkg/frazil:
2087        move FrzForcT diag from frazil_diagnostics_state.F to frazil_calc_rhs.F
2088        http://mitgcm.org/pipermail/mitgcm-devel/2012-March/005384.html
2089    o model/src/config_check.F: add a check for OLx>sNx/OLy>sNy
2090    o verification/lab_sea
2091      * #undef SEAICE_EXCLUDE_FOR_EXACT_AD_TESTING
2092      * #define ALLOW_SST_CONTROL & ALLOW_SST_CONTROL
2093      * nTimeSteps 3 -> 4
2094      * changed reference output accordingly
2095    o pkg/ctrl:
2096      * fix ctrl_get_gen for xx_sst, xx_sss
2097    o pkg/fizhi:
2098      - fix 2 calls to S/R GRD2MSC (argument igrd) in update_earth_exports.F
2099        update results of exp. fizhi-cs-32x32x40 (fail with only 6 digits for cg2d)
2100      - by default, use new version of S/R GETPWHERE (#define TRY_NEW_GETPWHERE);
2101        fix few out-of-bounds indices in referencing vars (initialise igrd to 1);
2102        clean-up fizhi_turb.F (remove unused & uninitialised qdiaglsm array).
2103    o pkg/gmredi:
2104      - add diagnostic of Redi (main diagnonal) vertical diffusive flux of Temp
2105    o pkg/fizhi:
2106      - fix few initialisation and multi-tile Pb: aqualev & gridalt now pass the
2107        (old)aces open64 tuv test.
2108    o pkg/icefront: fix bug and reorder loop in icefront_init_varia.F
2109    o pkg/mom_vecinv:
2110      - fix 1 loop range in mom_vecinv.F to be like all the other loops which
2111        set/update gu,gv/Diss (fix Pb of uninitialised fVerUkp in admom_vecinv
2112        with non-lin free-surf).
2113    o model/src: move k-loop outside of i/j-loops when (re-)computing R_low
2114      in ini/update_masks_etc.F in order to avoid -O3 optimization problems with
2115      some compilers (gfortran 4.6.0 on MacOS)
2116    o momentum:
2117      - separate fVer?(:,:,kUp) & fVer?(:,:,kDown) in argument list of MOM_FLUXFORM
2118        & MOM_VECINV subroutines (to help TAF). This fixes Pb of uninitialised
2119        fVer?(kUp) in admom_fluxform with non-lin free-surf or bottom control.
2120    
2121    checkpoint63k (2012/03/17)
2122    o model/src:
2123       - selectAddFluid (ALLOW_ADDFLUID): add missing term in horizontal momentum
2124         flux-form (mom_fluxform.F) and vertical momentum (calc_gw.F) equations.
2125       - SOLVE_DIAGONAL: switch default to use adjoinable & vectorized version
2126         (#undef SOLVE_DIAGONAL_LOWMEMORY); update output of exp. front_relax.bvp.
2127    o model/src: solve_*diagonal.F
2128       - replace division with multiplication by inverse (similar to original version)
2129         update output of AD exp. global_ocean.90x40x15.
2130       - fix pkg/gmredi/gmredi_calc_psi_bvp.F & pkg/ggl90/ggl90_calc.F
2131         to enable the use of the vectorized & differentiable solve_tridiagonal.F
2132       - test exp. global_ocean.90x40x15/input_ad: switch to advection scheme 20 for
2133         vertical advection (to get solve_tridiagonal tested in AD mode).
2134    o pkg/seaice: ECCO-CLIVAR merge:
2135      1. seaice AREA relaxation
2136         * CPP option: SEAICE_ALLOW_AREA_RELAXATION
2137         * runtime flag: SEAICE_tauAreaObsRelax
2138      2. modified global mean cost imbalance code: CPP option
2139          ALLOW_SSH_GLOBMEAN_COST_CONTRIBUTION
2140    o another iteration on solve_*diagonal.F
2141       Make choices independent of AUTODIFF
2142       Default will be the adjoinable vectorized version.
2143       Alternative choices are:
2144       * non-adjoinable original version with low memory footprint:
2145         #define SOLVE_DIAGONAL_LOWMEMORY
2146       * still adjoinable but does not vectorize (k as inner-most loop):
2147         #define SOLVE_DIAGONAL_KINNER (keeping SOLVE_DIAGONAL_LOWMEMORY undef)
2148    o testreport
2149     - add option to use a home made wrapper around "make"
2150     - remove MITGCM_IEEE env. variable (no longer active)
2151    o pkg/shelfice
2152     - improve computation of friction velocity for velocity dependent
2153       exchange coefficients: include velocities into SHELFICEBoundaryLayer
2154       block to average velocities vertically
2155     - add TAF store directives for SHI_ALLOW_GAMMAFRICT
2156    o Modify diagonal solvers, now three versions (upon request):
2157      #ifndef SOLVE_DIAGONAL_AUTODIFF
2158        1. default version (dating back a while ago)
2159      #else /* def SOLVE_DIAGONAL_AUTODIFF */
2160      # ifdef SOLVE_DIAGONAL_KINNER
2161        2. adjoinable version with k-innermost loop (G. Forget)
2162      # else
2163        3. adjoinable vectorized version of 2.
2164      # endif
2165      #endif /* SOLVE_DIAGONAL_AUTODIFF */
2166      All flags are currently set within routines, but could/should be moved to CPP-options.
2167      Array bounds for 1. are as before, for 2.,3. cover the entire domain
2168      (could be changed for 1. too).
2169    o verification/lab_sea (fwd):
2170      - update the 4 fwd lab_sea test experiment: no longer SEAICE_GROWTH_LEGACY,
2171        use 7 categories (except hb87), new solve4temp params (except salt_plume),
2172        constant salinity (=4) or variable salinity (salt_plume) done through
2173        SItracer.
2174    o pkg/seaice:
2175      - rename parameters: SIsalFrac to SEAICE_saltFrac & SIsal0 to SEAICE_salt0;
2176      - remove old parameters ( SEAICE_freeze, SEAICEturbFluxFormula, SEAICE_gamma_t,
2177         SEAICE_gamma_t_frz, SEAICE_availHeatTaper & SEAICE_availHeatFracFrz)
2178        from SEAICE_PARMS.h ; still need to fix seaice_cost_sst.F (broken when
2179        SEAICE_freeze got retired) but already better than previously with
2180        SEAICE_freeze=123456.7 deg.C;
2181      - move setting of facOpenGrow/Melt from SEAICE_INIT_FIXED to SEAICE_READPARMS
2182        (safer multi-threaded setting); always set SEAICEuseEVP;
2183      - setting of ocean-ice turb. flux coeff: moved from SEAICE_CHECK to
2184        SEAICE_READPARMS & SEAICE_INIT_FIXED (this fixes wrong summary report);
2185        stop if multiple specifications for the same coeff; make sure default
2186        SEAICE_mcPheePiston is compatible with drF(1) & deltaT.
2187    o pkg/obcs:
2188      - allow to switch to upwind 1rst order advection scheme for the advective
2189        flux computation at the open-boundary; disabled for adjoint built.
2190    o pkg/ptracers:
2191      - rename PTRACERS_RESTART.h -> PTRACERS_START.h
2192      - rename ptracers_fields_blocking_exchanges.F -> ptracers_fields_blocking_exch.F
2193      - add parameter to decide when to start a tracer; use internal flag to
2194        know which tracer to step-forward; switch this internal flag at the top
2195        of forward_step.F (new S/R PTRACERS_SWITCH_ONOFF); for now, not enabled
2196        for adjoint built.
2197    o pkg/seaice:
2198      - add SEAICE_SIZE.h anywhere in the code where SEAICE.h is included ;
2199      - move MULTDIM declaration and setting from SEAICE.h to SEAICE_SIZE.h ;
2200      - keep experiment offline_exf_seaice truly single category (set MULTDIM=1).
2201    o pkg/ecco:
2202      - fix writing of output file DiagnosCost_ClimSalt/Theta
2203        and DiagnosCost_DriftSalt/Theta (if multi-tiles per proc).
2204    o pkg/seaice:
2205      - add missing initialisation of COR_ICE array in dynsolver.F
2206      - merging SEAICE_MULTICATEGORY define and undef cases. Now the same code is
2207        compiled either way, and is tested in all exps (multidim was only tested
2208        in lab_sea ad before).
2209      - cosmetic change to prepare for future addition of ITD. no change to results.
2210        no defaults change.
2211      - added run time param SEAICE_multDim (7 for SEAICE_MULTICATEGORY, 1 otherwise).
2212      - by lack of adequate verification experiments, I further used custom versions
2213        of global_ocean.cs32x15 to test multicat or not, with pickup or not. All
2214        should be correct.
2215      - avoid recomputations in ad.
2216    o array initialisation in adjoint mode:
2217      1) pkg/mom_common/mom_calc_ke.F:
2218        add full array initialisation of KE inside mom_calc_ke.F (ALLOW_AUTODIFF_TAMC):
2219        The S/R which calls MOM_CALC_KE initialises KE but in some recomputation
2220        part this initialisation is gone, resulting in Floating Point Exception
2221        (caught by open64 compiler with debug option).
2222      2) model/src/convective_weights.F
2223        set output convectCount over the full array range (instead of doing
2224        an update): this fix a similar issue when called within recomputation (adjoint)
2225        which could by-pass the initialisation (normally done in the caller S/R).
2226    o pkg/seaice:
2227      - final version of turbulent flux params, as agreed at MIT ice meet:
2228           SEAICE_mcPheePiston (default is ~ 0.000875)
2229           SEAICE_mcPheeTaper (default is 0.)
2230           SEAICE_frazilFrac (defualt is 1.)
2231           SEAICE_mcPheeStepFunc (default is false)
2232      - changes results at trunction error level
2233      - ifdef SEAICE_EXTERNAL_FLUXES, disallow SEAICE_waterAlbedo
2234    o added pkg/frazil:
2235      - see frazil_description.tex for details
2236      - verification experiment is global_with_exf/input.yearly; changes output.yearly.txt
2237    o pkg/shelfice/shelfice_thermodynamics.F
2238      - fix exponents for velocity dependent exchange coefficients: change
2239        from 2/3(=0) to 0.66666666666666667
2240      - move computation of velocity dependent exchange coefficients into
2241        separate loop, so that it applies to both thermodynamics
2242      - move some divisions by constants out of loops
2243    
2244    checkpoint63j (2012/02/16)
2245    o pkg/seaice:
2246      - overhaul of seaice_summary.F after feb 2012 clean-up of seaice_growth.F etc.
2247      - SItracer:  added run time params, and allow coupling to ocn salinity.
2248    o pkg/seaice: remove (almost) all divisions by constants within loops
2249      in seaice_growth.F and seaice_solve4temp.F, this changes (only) the cg2d
2250      results of global_ocean.cs32x15.seaice from 16 to 11 digits (but only
2251      those, caused by 1/QI -> recip_QI) -> update output.seaice.txt,
2252      output_adm.seaice_dynmix.txt and also lab_sea: output_adm.evp.txt
2253    o pkg/seaice :
2254      - simplify McPhee tapering, and allow to use it with SEAICEturbFluxFormula
2255        = 1 or 2, using newly added run time parameter SEAICE_availHeatTaper.
2256      - fix d_AREAbyATM, d_AREAbyOCN, d_AREAbyICE diags I broke in r1.148.
2257      - add permanent SItflux diag that corresponds to TFLUX but includes
2258        ice+snow. Hence SItflux-TFLUX should match the ice+snow heat budget.
2259      - allow activation/testing of a fix for suspected missing term in
2260        ocn-ice heat budget (to be confirmed). To test this, you want to
2261        undef SEAICE_DISABLE_HEATCONSFIX, and then set the run time param
2262        SEAICEheatConsFix to .TRUE. that also allows the 'SIaaflux' diagnostic.
2263      - no change in results, fwd or ad.
2264    o global_ocean.cs32x15/results: 3 changes following from the pkg/seaice commit below:
2265      - switch to variable freezing point.
2266           Results change : cg2d -> 1 digits; ad -> 3-6-6 digits.
2267      - bug fix : the sublimation term that was missing is now activated.
2268           Results change : cg2d -> 2 digits; ad -> 8-6-6 digits.
2269      - bug fix : flooding sign term for SIsal0.NE.0.
2270           Result change : cg2d -> 8 digits; ad -> 11-12-9 digits.
2271    o pkg/seaice:
2272      - unified freezing point treatment : the old SEAICE_VARIABLE_FREEZING_POINT
2273        is now the default, and the old default constant freezing point is recovered
2274        with SEAICE_tempFrz0    = -1.96,
2275             SEAICE_dTempFrz_dS = 0.,
2276      - retire SEAICE_freeze (= the old way of specifycing the constant freezing point)
2277      - remove ALLOW_SEAICE_FLOODING brackets; run time switch is already there.
2278      - bug fix (thanks to M. Losch) : the sublimation term that was missing is now
2279        activated. To reproduce old results with this bug define SEAICE_DISABLE_SUBLIM.
2280      - bug fix (silly me) : flooding sign term (seaice_growth.F r 1.149line 1211)
2281        was wrong for SIsal0.NE.0. Changes cs32x15 results (see above item for detail).
2282      - bug fix (thanks to O. Jahn) : area loss for melting  got messed up in
2283        seaice_growth r149 for legacy branch (no results change).
2284      - introduce SEAICE_CAP_SUBLIM : caps sublimation heat flux in solve4temp (code
2285        from I. Fenty).
2286      - results did not change except for global_ocean.cs32x15, mostly due to the
2287        switch to variable freezing point (see above item for detail).
2288    o pkg/thsice:
2289      - fix and simplify interface to salt_plume pkg ; diagnose directly amount of
2290        seawater freezing in thsice_calc_thickn (not used).
2291    o pkg/seaice: turbulent flux term specification via run time params.
2292      - replace CPP switches with run time switches to facilitate testing
2293      - retired CPPs : MCPHEE_OCEAN_ICE_HEAT_FLUX,
2294                       GRADIENT_MIXED_LAYER_TURBULENCE_FACTOR
2295      - added runtime parameter : SEAICEturbFluxFormula
2296      - move Mcphee constants to SEAICE_PARAMS.h
2297      - seaice_readparms.F : read turbulent flux term params (SEAICEturbFluxFormula;
2298                 SEAICE_availHeatFrac/Frz, or SEAICE_gamma_t/_frz if apply);
2299                 remove seaice_summary call (moved to seaice_init_fixed)
2300      - seaice_init_fixed.F : set SEAICE_availHeatFrac/Frz depending on
2301        SEAICEturbFluxFormula, and seaice_summary call (moved from seaice_readparms)
2302      - seaice_summary.F : add missing report of read turbulent flux term set up
2303                           and SITRACER.
2304      - seaice_check.F : check range; inform and stop if retired CPPs are used
2305                         (incl. SEAICE_AGE).
2306      - seaice_growth.F : unified use of SEAICE_availHeatFrac/Frz, without
2307             CPP switch, same computation as before for the different options.
2308      - change results at the truncation level.
2309    o pkg/seaice:
2310      - remove un-used parameters LAD & MAX_TICE ; add new run-time parameters:
2311        useMaykutSatVapPoly (default=F), postSolvTempIter (default=2) and
2312        SEAICE_wetAlbTemp (default=-1e-3). Remove option SEAICE_SOLVE4TEMP_LEGACY.
2313      - update verification/*/input*/data.seaice:
2314        to reproduce previous results with former #defined SEAICE_SOLVE4TEMP_LEGACY
2315        code, set useMaykutSatVapPoly=T & postSolvTempIter=0 ;
2316        and to reproduce previous results with former non-SOLVE4TEMP_LEGACY code,
2317        set SEAICE_wetAlbTemp=0 & SEAICE_snowThick=0.
2318    o pkg/seaice/seaice_solve4temp.F (SOLVE4TEMP_LEGACY):
2319      - remove LEGACY code for solving for tsurf (A1,A2,A3) but maintain the same
2320        algorithm (same choice: useMaykutPolySatVap=T, postSolvTempIter=0);
2321        difference in results only due to machine truncation.
2322      - remove MAX_TICE (tsurf is always =< TMELT anyway); keep MIN_TICE if using
2323        MaykutPolySatVap; keep MIN_LWDOWN.
2324      - adapt SEAICE_MODIFY_GROWTH_ADJ code (untested) to non-legacy formulation.
2325      - update output of verification exp. lab_sea (4 fwd: 11 cg2d digits except hb87,
2326        + 3 AD: 6 digits except evp) and offline_exf_seaice.seaice (12 digits).
2327    o pkg/salt_plume:
2328      - isolate saltPlumeFlux array exch into a specific S/R called from
2329        do_oceanic_phys.F
2330      - add interface to pkg/salt_plume (filling of saltPlumeFlux) in pkg/thsice.
2331    o verification:
2332      - move untested set-up to MITgcm_contrib/verification_other.
2333    o pkg/seaice:
2334      - retire old way of SEAICE_AGE. Now replaced with ALLOW_SITRACER.
2335    o pkg/seaice:
2336      - seaice_solve4temp.F (keeping results unchanged):
2337        * add 2 future run-time params to select which saturation vapor pressure
2338          formula is used and how post-iteration fluxes are set.
2339          Temporary set these 2 params according to option SOLVE4TEMP_LEGACY;
2340        * New piece of code (not used) to update surf. atmos. heat flux F_ia using
2341          the linearized expression to stay consistent with tsurf finding.
2342      - seaice_freedrift.F avoid floating exception in sqrt(y) since y=sqrt(x*x)-x
2343        can be < 0.
2344    o pkg/seaice/seaice_solve4temp.F (SOLVE4TEMP_LEGACY undef):
2345      - remove from F_ia (and from it's derivative dFiDTs1) the contribution of
2346        conductive heat flux F_c , and add it explicitly when updating tsurf as
2347        solution of: Fc = Fia + d/dT(Fia - Fc) *delta.tsurf
2348        so that now F_ia has a consistent meaning through the entire routine.
2349        This causes differences at truncation level: update output of fwd exp.
2350        global_ocean.cs32x15.seaice.
2351    o pkg/seaice:
2352      - lots of editing/cleaning in seaice_solve4temp.F + better documentation
2353        of arrays, sign/direction of fluxes; no effect on results.
2354      - replace hard coded 273.16 (=previous value of celsius2K) by celsius2K
2355        in seaice_budget_ocean.F & seaice_solve4temp.F (SOLVE4TEMP_LEGACY part);
2356        note: this should have been done before changing celsius2K default.
2357      - to keep results unchanged, add back old value of celsius2K in verification
2358        exp. input*/data : lab_sea (AD), offline_exf_seaice (fwd+AD) & seaice_obcs
2359      - replace hard coded seawater freezing temp in seaice_solve4temp.F (part
2360        SOLVE4TEMP_LEGACY) of 271.20 (=previous value of celsius2K + default
2361        value of SEAICE_freeze) by celsius2K+SEAICE_freeze so that seawater
2362        freezing temp is consistent with value in seaice_growth.F ; this causes
2363        differences at machine truncation level: update lab_sea AD output (3/4).
2364    o pkg/seaice:
2365      - mask (in exf_init_fixed.F) atemp,aqh,evap,precip,runoff,lwflx,areamask
2366        and climsst/sss even when using seaice (to prevent calculation that might
2367        use SST on land); does not affect any verification exp.
2368      - apply mask to taux,tauy (in seaice_get_dynforcing.F); update output
2369        of lab_sea.fd & lab_sea.hb87 and global_ocean.cs32x15.seaice_dynmix.
2370    o pkg/seaice/seaice_growth.F: add mask to avoid non-zero ice thickness
2371      over land (non-legacy code)
2372    o vectorize salt_plume package:
2373      - add extra code to salt_plume_frac and salt_plume_tendency_apply_s
2374      - this code computes plumebk everywhere (also over land), thus requires
2375        code to avoid divisions by zero and catch the case of kLev=Nr.
2376      - efficiency of salt_plume_frac is still sub-optimal
2377    o tools (genmake2):
2378      - fix makefile NAME specification (option: -makefile NAME) by adding
2379        "-f $MAKEFILE" in few places where it was missing including makedepend
2380        command (contribution from Paul).
2381    
2382    checkpoint63i (2012/01/24)
2383    o model/src:
2384      - add factorized versions of some EOS code to find_rho.F,
2385        define USE_FACTORIZED_EOS to turn it on (default for TARGET_NEC_SX)
2386    o model/src:
2387      - add celsius2K to namelist PARM01; remove unused recip_rhoNil from PARAMS.h;
2388      - change default celsius2K from 273.16 to 273.15
2389      - to keep results unchanged, add back old value of celsius2K in verification
2390        exp. input*/data : aim.5l_cs, 1D_ocean_ice_column, lab_sea (fwd),
2391         global_ocean.cs32x15(seaice) & cpl_aim+ocn(input_atm).
2392    o model/src: add a little initialisation trick to find_rho.F and find_alpha.F
2393      to make TAF generate vectorizable code
2394    o pkg/seaice/seaice_evp.F: add code (copied from CICE) that avoids underflows.
2395       Turn on by defining SEAICE_EVP_ELIMINATE_UNDERFLOWS. Most compilers
2396       have flags that do this more efficiently.
2397    o pkg/diagnostics/diagstats_calc.F
2398      - for TARGET_NEC_SX fix the treatment of the scaling factor tmpFac=scaleFact
2399    o pkg/obcs (with exch2):
2400      - derive OB indices in overlap region from OB-InsideMask (in obcs_init_fixed.F)
2401        and remove code (in obcs_readparms.F) which was based on EXCH of indices
2402        (through buffer) and did not account for exch2 (e.g., CS-grid) topology.
2403    o pkg/exf and seaice exp:
2404      - change offline_exf_seaice.seaicetd test exp. to use default DIFF1 value (=0)
2405        so that switching off area & heff advection flags does not affect results.
2406      - change default EXF_LWDOWN_WITH_EMISSIVITY to #define in EXF_OPTIONS.h
2407      - keep exp. seaice_obcs & 1D_ocean_ice_column(ad) unchanged (using #undef
2408        EXF_LWDOWN_WITH_EMISSIVITY) and, using pkg/exf default emissivities, update
2409        results of verification experiments: 1D_ocean_ice_column(fwd),
2410        global_ocean.cs32x15.seaice(fwd+ad) & seaice_dynmix(ad), lab_sea (all 8)
2411        and offline_exf_seaice (all 4).
2412    o pkg/seaice:
2413      - remove array YNEG, RIVER, TMIX (replaced by local var) from common block;
2414        remove also areaNm1 & hEffNm1 when SEAICE_GROWTH_LEGACY is undef.
2415      - fix bug: areaNm1 & hEffNm1 are needed in seaice_growth (SEAICE_GROWTH_LEGACY)
2416        but were not filled when resp. SEAICEadvArea=F & SEAICEadvHeff=F and
2417        not multi-dim advection;
2418      - fix seaice_growth.F to compile with both SEAICE_GROWTH_LEGACY and
2419        SHORTWAVE_HEATING #undef.
2420    o optim: make Makefile more robust (?)
2421    o pkg/obcs:
2422      * fix treatment of obcs_read_pickup for TAF
2423    o pkg/shelfice:
2424      * add missing initialisation of num_shifwflx
2425      * new adjoint verification exp. for isomip
2426      * change Prandtl and Schmidt numbers from generic formulations
2427        (in terms of model diffus. and visc.) to separate runtime
2428        parameters, with Holland and Jenkins (1999) default values.
2429    o pkg/exf (interpolation):
2430      - extended input field (2 rows) near the N & S poles:
2431        * fill in with the symetric value (when even Nb of data in longitude)
2432        * add average value at the poles only for scalar quantities ; for vector
2433          component interpolation, skip the averaging and keep duplicated values,
2434          unless the 2 components have same location (uvInterp=T) in which case
2435          interpolate the 2 components together using S/R EXF_INTERP_UV.
2436      - new S/R EXF_INTERP_UV to interpolate the 2 components of a vector field
2437        together: this allows to account properly for local orientation when
2438        averaging at N & S pole.
2439      - add CPP option EXF_USE_OLD_INTERP_POLE to recover old results regarding
2440        exf-interpolation near N & S poles. Undef by default.
2441      - add debug check/print on 1rst iter if debugLevel >=2.
2442    o pkg/exf:
2443      - change masking flags definition (no longer "parameter"), put them in
2444        common block and set them in S/R EXF_INIT_FIXED.
2445      - change recognized masking flag from s,u,v to c,w,s since the mask
2446        to use (maskC,W,S) depends on position on model grid and has little to
2447        do with scalar/vector difference; fix masking if using P-coordinates.
2448      - fix masking of wind-stress (was wrong if interpolated or read on A-grid)
2449        and update results of exp. global_with_exf (x2).
2450      - fix setting of zenith-angle table when SHORTWAVE_HEATING is undef.
2451    o pkg/obcs
2452      - S/R obcs_calc_stevens: fix a small bug (gammat -> gammas where appropriate)
2453    o pkg/exf (interpolation):
2454      - assume periodicity in X only if input field cover full longitude range.
2455      - improve search for lat. index (supposed to be faster, in ~log2(ny) steps,
2456        and should vectorise).
2457      - fix input lat of the 2 added row (in case we provide N.pole data).
2458    
2459    checkpoint63h (2011/12/30)
2460    o pkg/seaice:
2461      - change declaration of UVM from _RL to _RS in order to get B-grid
2462        uIce,vIce monitor when _RS = real*4
2463    o pkg/offline:
2464      - new S/R OFFLINE_RESET_PARMS for resetting main-model params (switch off flags);
2465      - compute vertical velocity if not read from file (switch on exactConserv
2466        & staggerTimeStep);
2467      - fix output of ptracer monitor iter & time for default PTRACERS_monitorFreq.
2468    o verification:
2469      - update grid-files (in tutorial_held_suarez_cs/input and fizhi-cs-32x32x40/input)
2470        with grid-angle generated using "utils/matlab/cs_grid/cubeCalcAngle.m":
2471        fix Pb in yG definition @ 2 missing corners (previously yG was averaged);
2472      - update output of exp. global_ocean.cs32x15.viscA4 after changing
2473        grid-file angles (used here for coriolis-3d);
2474      - remove (or gzip) few files not needed to run fizhi-cs experiments.
2475    o pkg/exf (vector interpolation):
2476      - rotate vector component toward local grid-axis orientation using grid-angles
2477        (stored in GRID.h) instead of locally computed rotation angle; keep old code
2478        available with exf option EXF_USE_OLD_VEC_ROTATION (undef by default).
2479    o pkg/seaice:
2480      - allow to compile with exf options ALLOW_ATM_TEMP or ALLOW_DOWNWARD_RADIATION
2481        undefined. Fix and remove the stop when ALLOW_RUNOFF is undefined.
2482    o pkg/PKG_OPTIONS.h files:
2483      - move #include "CPP_OPTIONS.h" just after #include "PACKAGES_CONFIG.h",
2484        outside of the #ifdef ALLOW_THISPKG / #endif block.
2485      - update verification/*/code/PKG_OPTIONS.h files.
2486    o add a verification experiment (offline_exf_seaice/input.seaice) that test
2487      the B-grid LSOR solver
2488    o pkg/seaice: sort out emissivity and long wave radiation step 2:
2489      - add emissivity for snow and ice as new run-time parameters
2490        (unfortunately) that default to the corresponding exf values; this
2491        changes results in most verification experiments so that for backward
2492        compatibility these parameter have to be set explicitly to inconsistent
2493        values (ugly);
2494      - the exf-flag EXF_LWDOWN_WITH_EMISSIVITY then gets rid off the hard-wired
2495        emissivities of 0.97 associated with lwdownloc in S/R seaice_solve4temp
2496        until we agree how to handle this bug properly
2497    o pkg/exf (interpolation):
2498      - add a set of run-time param ({inputfield}_interpMethod), one for
2499        each interpolated input field, to select the interpolation method
2500        with a value of zero switching off the interpolation;
2501      - print interpolation parameters to standard output;
2502      - refine exf_check.F accordingly ; stop if USE_NO_INTERP_RUNOFF is defined
2503        (to use instead runoff_interpMethod=0 in data.exf).
2504      - simplify default setting of interpolation parameters (for all fields,
2505        set position to match model grid cell-center position, leading to trivial
2506        interpolation in case of regular Lat-Lon grid) and fix for the case of
2507        non-uniform delY.
2508    o pkg/exf/exf_radiation.F: add the factor ocean_emissivity to lwdown, for
2509       within #ifdef EXF_LWDOWN_WITH_EMISSIVITY/#endif. Unless ocean_emissivity=1.
2510       this factor is absolutely required, because the lw exitance (= out-going
2511       long wave radiation) is emissivity*stefanBoltzmann*T^4 + rho*lwdown,
2512       where the reflectivity rho = 1-emissivity for conservation reasons. Once
2513       this is established, we can remove the CPP-Flag (if we want to).
2514    o pkg/seaice:
2515      - qualify a stop statement in S/R seaice_check: EXF_READ_EVAP and
2516        ALLOW_BULKFORMULAE are only required if SEAICE_EXTERNAL_FLUXES is defined
2517      - sort out emissivity and long wave radiation, step 1: make SEAICE_emissivity
2518        what the name implies (and not emissivity*BoltzmannConstant), this means
2519        the old default value of 5.5e-8 now means
2520        5.5e-8/5.670e-8 = 0.97001763668430343479 as ocean_emissivity in
2521        S/R exf_readparms
2522      - FV-discretization of the B-grid LSOR solver, turn on with
2523        SEAICE_LSRBNEW. This new solver also involves a slight re-organization
2524        of the calling routine dynsolver, so that B and C-grid code look a
2525        little more alike.
2526      - fix index bugs in ostres.F (B-grid code)
2527    o pkg/seaice/seaice_ocean_budget.F: change (unused) code to make it look better
2528    o pkg/seaice/seaice_readparms.F: make ocean_emissivity*stefanBoltzmann the
2529      default for SEAICE_emissivity, if useEXF; requires setting a wrong
2530      parameter value in global_ocean.cs32x15/input.seaice/data.seaice for
2531      backward compatiblity
2532    o model/src: use sigmaR in calc_ivdc
2533    
2534    checkpoint63g (2011/12/16)
2535    o pkg/seaice/seaice_growth.F:
2536      fix heat conservation of the coupled ocean-seaice system.
2537      when SEAICE_HEAT_CONSERV_FIX is defined, the mismatch of
2538      solid vs liquid water treatment is resolved via QNET.
2539    o pkg/seaice/seaice_growth.F:
2540      add missing term for sublimation in saltFlux, which was breaking conservation.
2541    o pkg/seaice/seaice_model.F:
2542      Remove this patholigical case treatment in evolution branch,
2543      where it is un-necessary and breaks conservation.
2544      Update global_ocean.cs32x15/results accordingly for
2545      output.seaice.txt output_adm.seaice.txt and output_adm.seaice_dynmix.txt
2546    o model/src:
2547      useRealFreshWaterFlux: remove masking of EmPmP (using maskInC) in
2548      external_forcing_surf.F and apply mask directly in S/R SOLVE_FOR_PRESSURE.
2549    o pkg/obcs:
2550      modify Stevens boundary conditions so that S/R obcs_calc_stevens computes
2551      tendency for temperature and salinity that is then applied to update
2552      theta and salt in S/R obcs_apply_ts; this requires proper masking of all
2553      horizontal advection and diffusion contributions on the boundary (in
2554      S/Rs gad_advection, gad_calc_rhs, gmredi_rtransport, gmredi_calc_diff), and
2555      removing the mask in S/R timestep_tracer. The advantage of this approach is
2556      that the updated tracer values include contributions from the surface
2557      forcing and vertical diffusion.
2558      This modification changes exp4.stevens because of vertical diffusion.
2559    o model/src:
2560      change non-curvilinear grid setting to also work with exch2 + blank tiles:
2561      - move delX,delY to new header file (SET_GRID.h) and adjust length to 1rst
2562        face dimensions.
2563      - new S/R INI_LOCAL_GRID to define model tile-local grid (using same units
2564        as delX,delY) and called from S/R INI_CARTESIAN_GRID, INI_CYLINDER_GRID
2565        and INI_SPHERICAL_POLAR_GRID.
2566      change test-experiment global_ocean.90x40x15:
2567      - split the domain in many more tiles (9x4 tiles of 10x10 each);
2568      - switch to exch2 and remove 1 blank-tile (but only for MPI test).
2569      - update results of both test (std & dwnslp).
2570    o pkg/diagnostics/diagstat_calc.F: fix problem with non-initialised halos in
2571       tmp-fields for TARGET_NEC_SX at the cost of extra loops and less vectorisation
2572    o model/src:
2573      - take sigma-coords related code out of update_etah.F into new S/R UPDATE_ETAWS
2574        and fix initialisation when using sigma-coords.
2575    o model/src:
2576     - improve Gael's changes from Jan 14, 2011 "addition of an 'update' of hfacc etc.
2577       to their current value at the beginning of forward_step.F": add a new run-time
2578       switch "doResetHFactors" (default=false) and use it to do (or not) the resetting.
2579     - set doResetHFactors=T in the following test exp:
2580        global_ocean.90x40x15/input (rStar) & input.dwnslp (linFS),
2581        global_ocean.cs32x15/input.seaice (rStar), hs94.cs-32x32x5/input.impIGW (linFS)
2582        and tutorial_global_oce_in_p (nonLinFS in p)
2583    o pkg/ecco
2584      - added IES cost term
2585    o verification/advect_xz
2586      - scale down the depth by 1/100 (from 200 km to just 2.km)
2587      - add secondary test using divergent flow, r-star and implicit vertical advection.
2588      - add note (check_conserve_TS.txt) and matlab script to check global
2589        conservation of T & S with NonLin-FreeSurf and Adams-Bashforth.
2590    o pkg/rbcs:
2591      - add missing relaxUFile & relaxVFile in namelist (in rbcs_readparms.F).
2592    o pkg/obcs (Stevens BCs):
2593      - fix various problems in the phase speed computations of the Stevens
2594        boundary conditions:
2595        - sign error for western and southern boundaries,
2596        - time tendencies were underestimated by factor of dTracerLev and some just
2597          zero (for multidim advection schemes) -> now estimate time tendencies
2598          from difference between previous (n) time level and the one before (n-1);
2599          this requires storing a field per tracer per boundary, also in the pickup
2600          files.
2601        - replace deltaTmom in cflMer/Zon computation with dTracerLev
2602        - set default phase velocity to cflMer/Zon
2603      - update verification experiment exp4.stevens
2604    o pkg/generic_advdiff (implicit_r):
2605      - fix implicit vertical advection conservation with AB and/or NonLin-FreeSurf
2606        (remove Tr*d/dz(w) in gad_implicit_r.F and add it in gad_calc_rhs.F);
2607      - fix implicit vertical diffusion or advection with NonLin FreeSurf
2608        (was using current recip_hFacC instead of future recip_hFacC): set future
2609        recip_hFac in thermodynamics.F and pass & use it in all vertical implicit
2610        solver S/R ;
2611      - fill diagnostics of vertical advective fluxes (computed from tendency)
2612        when using implicit vert. advection;
2613      - update output of exp that uses NonLin-FreeSurf & implicit vertical diffusion:
2614         global_ocean.90x40x15 (fwd+AD), global_ocean.cs32x15 (4 fwd +4 AD),
2615         tutorial_global_oce_in_p (fwd), tutorial_tracer_adjsens (AD)
2616         and cpl_aim+ocn (used in ocean); to be fixed: bottom_ctrl_5x5.
2617    o pkg/diagnostics:
2618      - add diags for T & S tendency which goes through Adams-Bashforth.
2619    
2620    checkpoint63f (2011/11/30)
2621    o pkg/obcs/obcs_calc_stevens.F:
2622      - join some loops to reduce number of if-statements
2623      - fix a bug in code for northern and southern boundaries.
2624    o pkg/seaice/seaice_init_varia.F
2625      - undo resetting UVM=0 that has slipped in unnoticed in r1.49 and
2626        caused zero ice-velocities for the B-grid code
2627    o pkg/seaice/seaice_init_fixed.F
2628      - fix a bug in the initialisation of the second metric terms
2629        k2AtC and k2AtZ: k2AtC was set to the value of k2AtZ and k2AtZ was 0.
2630      - this affects all seaice configurations with useCurviLinearGrid = .true.
2631        and SEAICEuseDynamics = .true. (default) and SEAICEuseMetricTerms
2632        = .true. (default)
2633      - the only verification experiment affected is global_ocean.cs32x15:
2634        icedyn, seaice, and seaice_dynmix (AD)
2635    o pkg/thsice/thsice_diagnostics_state.F
2636      - only for TARGET_NEC_SX: initialise all of tmpFld, so that overlap does
2637        not contain garbage that can lead to surprises in diagstats_calc.F
2638    o model/src:
2639      - move bi,bj loops inside INTEGR_CONTINUITY ;
2640      - call INTEGR_CONTINUITY directly from forward_step.F
2641        (previously called from momentum_correction_step.F)
2642      - call UPDATE_ETAH from integr_continuity.F and update initialise_varia.F,
2643        forward_step.F and pkg/ecco/the_main_loop.F
2644    o model/src/do_oceanic_phys.F:
2645      - reset addMass to zero only if useICEFRONT ;
2646      - separated k-loop for rhoInSitu calculation ;
2647      - add 2 diagnostics for wVel*delta^k(Rho) at constant pressure (= WdRHO_P)
2648        and at constant T,S (= WdRHOdP);
2649      NOTE: change diagnostics WRHOMASS : this is now simply the Vertical transport
2650        of In-Situ Density (Anomaly) (=wVel*rho^bar-k) (previously was Vertical
2651        transport of locally-referenced potential density);
2652        to recover old diag: (WRHOMASS)_old = (WRHOMASS)_new -1/2 * (WdRHOdP)
2653    o gluemnc:
2654      - replace ncrcat with ncks when adding variables to *.glob.nc
2655      - change the way variables without record dimensions are handled so that
2656        files that have variables with and without record variables can be glued:
2657        add a record dimension with a new unique name to be able to differentiate
2658        between variable with and without a-prior record dimensions. Remove
2659        this record dimension before adding the variable to the *.glob.nc file.
2660        This procedure automatically works also for grid.*.nc files that do not
2661        have any record dimension.
2662    o verification/cpl_aim+ocn:
2663      - generate new reference output on baudelaire (gfortran, mpich2) (previously
2664        from old aces-grid cluster, ao + ifort) and update 'run_cpl_test' script.
2665    o pkg/obcs/obcs_calc_stevens.F:
2666      - add code for northern and southern boundaries.
2667      - reorder some loops to save some operations and so that drFBar can be scalar
2668    o model/src:
2669      - re-arrange extrapolation calculation in Adams-Bashforth S/R (affects machine
2670        truncation) and add diagnostics for Adams-Bashforth tendency increment.
2671      - update test-exp. AD output:
2672        1D_ocean_ice_column, bottom_ctrl_5x5, lab_sea.noseaicedyn, obcs_ctrl;
2673      and FWD output: exp4 (x3), fizhi-cs-32x32x40, fizhi-cs-aqualev20,
2674        front_relax (x3), global_ocean.90x40x15 (x2), global_ocean.cs32x15 (x5),
2675        global_ocean_ebm, ideal_2D_oce, internal_wave, isomip (x3), lab_sea (x4),
2676        matrix_example, MLAdjust (x5), natl_box (x2), tutorial_advection_in_gyre,
2677        tutorial_global_oce_in_p, tutorial_global_oce_latlon and
2678        tutorial_plume_on_slope.
2679    o pkg/diagnostics/diagstats_calc.F: add special code for TARGET_NEC_SX
2680      that vectorises. This code uses 3 extra 2D fields, F90 array assignments
2681      and F90 intrinsic routines SUM, MINVAL, MAXVAL, but since TARGET_NEC_SX
2682      does not even come with an F77 compiler anymore, this should not be
2683      a limitation
2684    
2685    checkpoint63e (2011/11/06)
2686    o pkg/seaice adjoint of LSR:
2687      - substantially rework STORE dirs.
2688      - add new flag SEAICE_LSR_ADJOINT_ITER and parameter SOLV_MAX_FIXED
2689        this flag will do SOLV_MAX_ITERS but only store SOLV_MAX_FIXED fields
2690        and only perform SOLV_MAX_FIXED adjoint iters.
2691        If flag SEAICE_LSR_ADJOINT_ITER is undef-ined, the store in the iteration
2692        always goes to same record, meaning that the last forward field will be
2693        the one used in the adjoint - an approximation.
2694      - now produces non-zero LSR-related gradients, and acceptable gradients for
2695        An's zonal (x-z) test case (to be checked in)
2696      - lab_sea: produces acceptable gradients for lab_sea with forward/backward LSR
2697        (but these are screwed up by the thermodynamics in the first place);
2698        reduce from 4 to 3 timesteps to avoid t.d. issue as temporary solution;
2699        output_adm.txt also reflects changes to seaice_lsr
2700      - global_ocean.cs32x15:
2701        * the "default" input_ad.seaice has been re-defined to always exclude dynamics
2702          (output_adm.seaice.txt was updated)
2703        * new input_ad.seaice_dynmix tests a forward LSR / backward free-drift
2704          (output_adm.seaice_dynmix.txt)
2705    o test-exp. exp4+stevens:
2706      - switch off pTracers and nonHydrostatic (restart problems with NH); update output
2707    o pkg/seaice (lsr solver):
2708      - put coriolis term into FORCEX,Y (as in seaice_evp.F; previously in rhsU,V only);
2709        update output (change truncation) of FWD test exp lab_sea & global_ocean.cs32x15
2710      - fix SEAICEuseFREEDRIFT for new OBCS version (ndef OBCS_UVICE_OLD)
2711      - new parameter "LSR_mixIniGuess" allows (if=2,4) to mix free-drift solution
2712        into initial guess for linearised solver; use weight ~ (1/err)^2,4.
2713      - compute (with new S/R) and print initial (+ free-driff sol. if available)
2714        and final residual of linearised system.
2715    o pkg/pp81: add diagnostics for vertical eddy viscosity and diffusivity
2716      (requires new subroutines pp81_init_fixed.F/pp81_diagnostics_init.F)
2717    o pkg/obcs: Stevens BCs (still only for east and west)
2718      - fix Stevens BCs by using intermediate velocities of previous
2719        time step as "baroclinic" contribution rather velocity of one grid cell
2720        inside the boundaries; more consistent but makes the entire treatment
2721        more complicated, requires new pickup files and two new S/Rs:
2722        obcs_copy_uv_n and obcs_save_uv_n
2723        keep old version with flag OBCS_STEVENS_USE_INTERIOR_VELOCITY
2724        (undefined by default)
2725      - silently move computation of some grid factors into separate loops to
2726        save some recomputations
2727      - add a hack for non-linear free surface
2728      - add a verification experiment to exp4 that tests this code
2729    o make gluemnc/xplodemnc work with (moron) non-GNU shell tools
2730    
2731    checkpoint63d (2011/10/25)
2732    o pkg/obcs + seaice-dynamics:
2733      - new implementation calls OBCS_APPLY_UVICE (in seaice_dynsolver.F) before
2734        solving for uIce,vIce and prevent SEAICE_LSR or SEAICE_EVP to modify OB
2735        values (consistent with an implicit method).
2736      - add option OBCS_UVICE_OLD (in OBCS_OPTIONS.h, defined by default) to
2737        return to older implementation (same results as before); note that none of
2738        the "experimental" OBCS_SEAICE options are implemented in the new version.
2739      - switch test exp. seaice_obcs to use new version (update output).
2740    o pkg/seaice:
2741      - add few stop (B-grid & CS-exch, B-grid & obcs, AUTODIFF & SEAICE_maskRHS)
2742      - add parenthesis in Water-Ice drag calculations (evp & lsr);
2743      - in seaice_lsr.F, simplify and fix AA3 setting in case sNx or sNy=1;
2744        and fix case SEAICE_waterDrag=0 (but unstable if no or little seaice)
2745      - update output of test exp lab_sea that uses evp or lsr (fwd+ad)
2746        and global_ocean.cs32x15 (icedyn & seaice fwd+ad).
2747    o pkg/layers:
2748      - Include potential density as new coordinate (Thanks to David Munday)
2749    o pkg/dic:
2750      - Remove subroutine CALC_PCO2_APPROX_CO3 from carbon_chem.F and add
2751        carbonate computation/output to CALC_PCO2_APPROX
2752    o pkg/generic_advdiff
2753      - make TAF generate code that vectorizes:
2754        gad_dst3fl_adv_*.F, gad_u3c4_impl_r.F
2755    o model/src:
2756      - improve vectorization also for adjoint code of
2757        solve_tridiagonal and solve_pentadiagonal. As this requires up to
2758        5 new 3D-fields, this code is only turned on for the combination of
2759        ALLOW_AUTODIFF_TAMC and TARGET_NEC_SX. Also remove error message
2760        for singular matrix check (only for TARGET_NEC_SX).
2761      - remove hard-wiring of CPP-flag ALLOW_SOLVERS_KLOOPINSIDE to
2762        ALLOW_AUTODIFF. This flag now needs to be set outside of
2763        solve_tri/pentadiagonal.F
2764    o pkg/exf:
2765      - fix previous modif in exf_readparms.F (revision 1.66: treatment of
2766        optional namelist EXF_NML_OBCS).
2767      - add many debug-print (to trace down where pkg/cal error msg comes from)
2768    o pkg/mom_vecinv/mom_vi_hdissip.F
2769      - rearrange loops so that vectorization is improved and in particular
2770        the adjoint routine vectorizes. The code is a little longer now, but I
2771        think easier to read.
2772        Note: CPP-flag MOM_VI_ORIGINAL_VISCA4 is not tested.
2773    o pkg/seaice:
2774      - allow to specify initial seaice velocity from files (uIceFile,vIceFile)
2775    o pkg/exch2:
2776      - alternative code (without tile x tile matrix) for cumulated (global) sum;
2777        used as default; keep using matrix version in adjustment.cs-32x32x1.
2778    o tools/build_options:
2779      - after merging some MPI and/or multi-threads specific optfiles so that
2780        the modified default optfile support both built (using genmake2 -mpi
2781        for the MPI built, using genmake2 -omp for OpenMP built),
2782        move now obsolete optfiles to tools/build_options/unsupported/
2783       (add copy of email sent to support list in doc/optfiles_changes.txt)
2784    
2785    checkpoint63c (2011/09/28)
2786    o pkg/ebm:
2787      - fix ebm_zonalmean.F for several procs in Ydir (nPy > 1); update output of
2788        test exp. global_ocean_ebm (affects machine truncation, 12 digits for cg2d)
2789    o pkg/seaice (SItracer pickup)
2790    * Simple code for pickup of SItracer fields (#define ALLOW_SITRACER)
2791      To be done:
2792      - thorough testing of missing fields in S/R seaice_read_pickup
2793      - thorough matching between generic tracers and specific fields used
2794        (e.g. volume-weighted age, area-weighted age, salinity, ...)
2795    o pkg/grdchk:
2796      - all procs calculate and print finite-difference gradient (for testreport)
2797      - change description output used by testreport;
2798      - AD testing: also compare and report Finite-difference gradient;
2799        => update all output_adm*.txt
2800    o test exp. global_ocean_ebm:
2801      - switch back useRealFreshWaterFlux (no problem anymore with run-off);
2802        and turn on exactConserve; update (fwd) output.
2803    o pkg/seaice (LSR):
2804      - print to STDOUT number of solver iterations at SEAICE_monFreq interval.
2805      - modify solver to deal cleanly with u/v switch at face edges (CS-grid):
2806        * identical results with non-CS topology (but save up to half of EXCH calls)
2807        * no much changes in cs-32 verification tests since no ice at face edges
2808         (differences due to convergence criteria, since nb of iterations changed)
2809        * expect some differences on lat-lon-cap grid.
2810        update FWD results of global_ocean.cs32x15 test exp. (icedyn & seaice)
2811    o pkg/exch2:
2812      - add new CPP option to disable Cumul-Sum matrix (to save storage when using
2813        many tiles); until alternative coding is added, just add a stop.
2814    o pkg/kpp:
2815      - move ptracer/salt correction to KPP diffusivity from calc_3d_diffusivity.F
2816        to S/R KPP_CALC_DIFF_PTR (+ add tracer-index to argument list).
2817    o optfiles:
2818      - merged few MPI specific (*+mpi*) and multi-threads specific (*+mth) optfiles
2819        into corresponding standard one, which now support different build:
2820        (when using "genmake2 -mpi" for MPI built, "genmake2 -omp" for OpenMP built)
2821      - add "darwin_amd64_gfortran" optfile (initially from Constantinos, tested by Gael)
2822    o pkg/obcs (seaice):
2823      - add missing EXCH for uIce,vIce after applying OBCS;
2824      - remove S/R EXF_SWAPFFIELDS_X/Y , disable S/R EXF_SET_OBCS_X/Y by adding
2825        argument = number of levels to S/R EXF_SWAPFFIELDS_XZ/YZ and S/R
2826        EXF_SET_OBCS_XZ/YZ ; update obcs_exf_load.F;
2827      - fix EXF_SET_OBCS_XZ/YZ for multi-threaded (assuming loaded arrays are shared)
2828      - verification exp. seaice_obcs: split domain in 2 tiles ; add SIZE.h_mpi
2829        and eedata.mth for MPI and mutlti-threaded testing.
2830    o pkg/flt:
2831      - make FLT EXCH working with multi-threads (and MPI + multi-threads);
2832      - use buffer for floats IO (trajectories & profiles); size set in FLT_SIZE.h;
2833      - fix pickup and trajectories + profiles output with multi-threads;
2834      - add parameter to select group of fields to write along trajectory and
2835        profile (default unchanged);
2836      - only call PORT_RAND* function when flt_noise <> 0;
2837      - add multi-threaded test for verification exp. flt_example.
2838    o eesupp/src:
2839      - fix S/R ALL_PROC_DIE for MPI+multi-threads.
2840      - USE_OMP_THREADING: check that number of threads (from eedata) matches
2841        actual number (from env.var. setting).
2842    o pkg/ebm:
2843      - fix multi-threading in ebm_area_t.F ; clean-up EBM.h header file.
2844      - add multi-threaded test for verification exp. global_ocean_ebm
2845    
2846    checkpoint63b (2011/08/29)
2847    o pkg/ebm:
2848      - fix sign of runoff;
2849      - update directly forcing fields (Qnet,EmPmR) to use standard
2850        external_forcing_surf.F (remove ebm_forcing_surf.F);
2851      - avoid loading forcing fields a 2nd time (1rst time from ini_forcing.F);
2852      - set either tauThetaClimRelax (in data) or tauThetaZonRelax (in data.ebm)
2853        and apply relaxation towards corresponding SST field (2-D map or ZonAver).
2854      - update global_ocean_ebm parameters file data and update output (fwd+ad).
2855    o verification/matrix_example:
2856      - split domain in 8 tiles (2x4); add SIZE.h_mpi and eedata.mth for
2857        MPI and mutlti-threaded testing.
2858    o pkg/matrix:
2859      - change name of S/R MATRIX_INIT to S/R MATRIX_INIT_VARIA ;
2860      - fix for multi-tiles (add bi,bj indices to exp/impMatrixCounter);
2861      - fix for multi-threaded (remove DATA statement);
2862      - use standard DIFFERENT_MULTIPLE function;
2863      - add MATRIX_OPTIONS.h
2864    o verification/matrix_example:
2865       To allow to split the domain in several tiles, change the domain size
2866        from 31x31 to 32x32 by adding 1 row (on Southern side) + 1 column (on
2867        Western side) of land points.
2868    o (*_)write_pickup:
2869      - fix few bugs in mypackage_read/write_pickup.F
2870      - in MDS_WR_METAFILES calls, replace "myTime" by a local copy into
2871        array of length 1 (was caught by compiler syntax-check).
2872    o pkg/diagnostics (velocity potential solver):
2873      - fix initialisation of main diagonal matrix (for overlap values)
2874    o tools/build_options:
2875      - towards single optfile for MPI and non-MPI built: merge few +mpi optfile
2876        into previously non MPI one (linux_am64 pgf77,open64,pathf90,ifort11)
2877      - linux_amd64_gfortran: merge +mpi_generic version into standard optfile:
2878        * move IEEE flags to DEVEL section; take IEEE flags from +mpi_generic ;
2879        * FAST case: for now, keep -O3 with ini_masks_etc.F in NOOPTFILES list;
2880        and use "-devel" testreport option for standard testing on baudelaire.
2881    o pkg/grdchk:
2882      - Assume that all gradient-check position are within the same tile
2883        corresponding to global indices (iGloTile,jGloTile) and that
2884        positions (i,j indices or nbeg) are local to this tile;
2885      - set tile local-indices and proc. number according to tile global-indices;
2886      - remove grdchkwhichproc from namelist (retired param);
2887      - send adjoint gradient to all procs so that all procs print it to STDOUT;
2888      - switch on MPI test for global_ocean.90x40x15 AD test experiment.
2889    o adding package bbl (Bottom Boundary Layer)
2890      description in MITgcm/pkg/bbl/bbl_description.tex
2891      example/test experiment in MITgcm_contrib/bbl
2892    o adjoint verifications
2893      - changed 5 experiments to multi-tiles
2894        * global_ocean.90x40x15
2895        * obcs_ctrl
2896        * offline_exf_seaice
2897        * tutorial_dic_adjoffline
2898        * tutorial_tracer_adjsens
2899        changed reference output for those that crossed tile boundaries
2900        (changed choices of gradient check positions)
2901      - with same tiling, switch on MPI test for the last 4 (add SIZE.h_mpi)
2902      - temporary bug fix in grdchk_loc.F for obcs
2903    o genmake2 & testreport
2904      - add target "obj" (just for OBJFILES files) to Makefile;
2905      - add option to specify FEXTRAFLAGS on command line.
2906    o pkg/mypackage:
2907      - remove bi,bj arguments from argument list of S/R MYPACKAGE_CALC_RHS
2908    
2909    checkpoint63a (2011/08/02)
2910    o pkg/diagnostics (velocity potential):
2911      - fix velocity-potential calculation when using OBCS: balance net inflow
2912        at each level (new S/R OBCS_DIAG_BALANCE).
2913      - fix some of the problems with OBCS in stream-function calculation.
2914    o pkg/exf/exf_readparms.F
2915      - make treatment of optional namelists (EXF_NML_04, EXF_NML_SGRUNOFF,
2916        EXF_NML_OBCS) more consistent, so that you need not have these lists
2917        in data.exf when they are not used.
2918    o optim/optim_readdata.F:
2919      - add some output about obcs variables that might help debugging
2920      - add a check about nvarlength
2921    o pkg/ctrl: once again, fix computation of endrec in s/r ctrl_init_rec
2922    o pkg/diagnostics (velocity potential):
2923      - fix mask for OBCS (still problems in stream-function with OBCS);
2924      - add specific parameter (default = main code CG2D params) for solver;
2925      - in case of poor convergence, use solution corresponding to lowest residual.
2926    o pkg/seaice/seaice_growth.F: small changes that permit vectorizable
2927      adjoint code. In general statements like tmpscal=fld(i,j) are problematic
2928      and should be avoided where possible.
2929    o model/src (rStar):
2930      - include r* effect on reference-state (PhiRef) in totPhiHyd
2931        (so that it's really the potential anomaly at the cell center);
2932        affect solution only if z* with full pressure in EOS.
2933      - test-exp global_ocean.90x40x15: reduce viscA4 (was not stable) and
2934        update output (because of z* in totPhiHyd and viscA4 changes);
2935      - keep the previous diagnostics as "PHIHYDcR" (closer to potential anomaly
2936        @ constant r) until interpolation at constant r is implemented.
2937    o pkg/diagnostics
2938      - fix RCENTER diagnostics in case cell center is not at interface middle
2939    o add code for TEOS-10 (www.teos-10.org, McDougall et al. 2011). Use
2940      this eos with eosType = 'TEOS10', in data (PARM01). This eos implies
2941      that THETA and SALT are "conservative temperature" and "absolute
2942      salinity"
2943    o pkg/ctrl
2944      - fix computation of endrec in s/r ctrl_init_rec
2945      - ctrl_pack/unpack_*: remove unused variables and some obsolete code
2946    o pkg/seaice/seaice_growth.F
2947      - fix recomputation with FENTY_AREA_EXPANSION_CONTRACTION code,
2948        remove then obsolete STORE directives
2949      - fix STORE directives for tice and tices, so that only the
2950        appropriate part of the fields are stored (and not the entire
2951        field); update global_ocean.cs32x15.seaice AD output.
2952      - cosmetic changes: adjust CPP flags and indentation for better
2953        legibilty
2954    o pkg/autodiff: add mnc-output of adBottomDragFld (code contributed by
2955      Chris Wilson)
2956    o pkg/gmredi:
2957       Add Sub-Meso Eddies parameterisation from Baylor (for now, disabled with TAF),
2958       and test it in verification exp. "front_relax.bvp" (update output.bvp.txt)
2959    
2960    checkpoint63  (2011/07/11)
2961    o pkg/exch2:
2962     - rename+move: nTiles in W2_EXCH2_PARAMS.h --> exch2_nTiles in W2_EXCH2_TOPOLOGY.h
2963     - exch2 version of Cumul-Sum routine: S/R W2_SET_MAP_CUMSUM set up the
2964       (2*nTiles)x(nTiles) Cumul-Sum matrix and Master Proc collects all tiles X,Y
2965       increments, calculates Cumul-Sum @ tile origin and sends results to each tile.
2966    o pkg/diagnostics:
2967     - deal with pairs of post-processed diags which are computed together; in
2968       particular, re-order list of diags within 1 file to save 2nd computation.
2969     - add S/R to compute velocity stream-function (called after velocity-potential
2970       calculation) from divergence free transport -> new diagnostics "PsiVEL".
2971     - add parameter to select grid-point location where PsiVEL == 0.
2972    o eesupp/src:
2973       new S/R to calculate cumulated sum on tiled array, corner grid-cell location
2974       (specific S/R needed with exch2 topology - for now, just print an error msg)
2975    o pkg/shelfice
2976     - Implement friction velocity-dependent transfer coefficients following
2977       Holland and Jenkins, JPO, 1999
2978       Original code by M. Losch with small modifs.
2979       Enable with CPP option SHI_ALLOW_GAMMAFRICT
2980       and runtime flag SHELFICEuseGammaFrict
2981    o verification lab_sea & global_ocean.cs32x15:
2982     - use tools/xmakedepend (instead of cyrus_makedepend, in genmake_local):
2983       does not miss some dependencies (but is slower) and also works with many files
2984       (default makedepend limitation for AD built).
2985     - use cyrus_makedepend in adjustment.128x64x1 (so that it still tested).
2986    o pkg/diagnostics:
2987     - add run-time parameter "useMissingValue" (def=False) to fill land-point
2988        (i.e., where mask=0) with MissingValue ; used only in MNC output file.
2989       This replaces CPP-option DIAGNOSTICS_MISSING_VALUE.
2990     - Extend the use of "missing_value" setting from data.diagnostics for the case
2991       of counter-diagnostics (where fraction-weight is zero). This applies both to
2992       MNC and MDS output files.
2993    o pkg/seaice/seaice_growth.F:
2994      - add 'a priori' cap of latent heat flux based on actual mass considerations
2995        when SEAICE_ADD_SUBLIMATION_TO_FWBUDGET is used in conjunction with the
2996        non-legacy seaice_solve4temp.
2997      - add diagnostic of the residual sublimation freshwater flux (the freshwater
2998        flux taken from the ocean if the total actual latent heat fluxes exceed
2999        the maximum)
3000      - remove the CPP switch around the *_FWbySublim unit change and move diagnostic
3001       fill for SIatmQnt, SIfwSubl, SIatmFW to the end of seaice_growth.F.
3002      - add diagnostic of the actual sublimation freshwater flux (that is 0. ifndef
3003       SEAICE_ADD_SUBLIMATION_TO_FWBUDGET) and of the latent heat flux (evap+sublim).
3004      - bug fix : frWtrAtm needs a_FWbySublim ifdef SEAICE_ADD_SUBLIMATION_TO_FWBUDGET.
3005      - bug fix : missing part to Martin's r_FWbySublim pathological case fix.
3006    o verification 1D_ocean_ice_column:
3007       made model domain truly 1x1x23 instead of 5x5x23 with only center cell (3,3,:) wet
3008       update results
3009    o pkg/diagnostics:
3010     - Implement setting of "Post-Processed" diagnostics (corresponding to gdiag(5)='P')
3011       which are not filled-up but computed from other diags ; In this case, the mate
3012       diag points to the primary (filled-up) diag to used for post processing.
3013     - Update Velocity-potential computation using post-processed diag framework.
3014     ==> Change the ordering of fields and time-periods in MDS output file
3015       when using periodic averaging: now writes one time record with the full set
3016       of fields for this time period, then the next time reccord (it used to be
3017       one field with the full set of time records then the next field).
3018         Note: this is now similar to NetCDF (MNC) output file. <==
3019    
3020    checkpoint62z (2011/06/21)
3021    o adjoint monitor:
3022     - Add adjoint monitor output for packages exf, seaice
3023       and update relevant testreport output
3024    o pkg/seaice:
3025     - re-order diags inits so that they appear in order in available_diagnostics.log
3026     - added diags: hsnow thermo. rates of change, area preceeding ridiging process,
3027       area/heff/hsnow preceeding thermodynamic growth/melt.
3028     - modified diag: SIdA; output actual effect, as the description states.
3029     - modified description: SIqneti, SIqneto, SIuheff, SIvheff, SIdAb*, HSNOW.
3030     - retired redundant diags: SIyneg, SIfice, SIsnwice, SIthdgrh.
3031       (SIyneg->SIdHbOCN; SIfice->SIdHbATC; SIsnwice->SIdHbFLO;
3032        and SIthdgrh->SIdHbOCN+SIdHbATC+SIdHbATO)
3033     - modified diags (2) : switch all SIdA*, SIdH*, SIdS* from delta to rates.
3034     - added diagnostics for seaice generic tracers (SItr*).
3035     - added SItrUnit and SItrNameLong run time param (for SItr* diags).
3036     - in diag names, replaced 'PrTh' abbrev. of 'preceeding thermo' with 'PT'.
3037     I. Fenty: 18-Jun-2011:
3038     Minor changes to seaice package:
3039     1) Retired old variables (A22, SEAICE_lhsublim, areaMax, areaMin, hiceMin) and
3040        added some new ones (SEAICE_area_reg, SEAICE_hice_reg, SEAICE_area_floor)
3041       - Differentiated "regularization variables" from "floor variables"
3042        * areaMin became SEAICE_area_reg (old A22) and SEAICE_area_floor
3043        * hiceMin became SEAICE_hice_reg (old hiceMin)
3044          (with _reg meaning regularization variable)
3045       - SEAICE_lhSublim becomes lhSublim, the sum of SEAICE_lhEvap and SEAICE_lhFusion
3046        so as to ensure energy conservation when going between phases
3047      - A22 was not used anywhere
3048     2) Changed regularization procedure for heffActual and hsnowActual to ensure
3049        well-boundedness and smooth adjoint in seaice_growth.F
3050     3) Fixed a bug where seaice_solve4temp would not recognize ice-free grid cells
3051        because the old regularization always set heffActual >= 0.05 cm
3052     4) Changed the model so that the default behavior is to put a small (10^-5) "floor"
3053        on AREA when HEFF > 0.
3054      - went from requiring ALLOW_PRECLUDE_INFINITESIMAL_AREA to be defined to
3055        requiring that DISABLE_AREA_FLOOR *not* be defined
3056     Affected verifications:
3057      - 1D_ocean_ice_column (output.txt output_adm.txt)
3058      - global_ocean.cs32x15 (output.seaice.txt output_adm.seaice.txt)
3059    o pkg/diagnostics:
3060      - move MNC code from diagnostics_out.F into new diagnostics_mnc_out.F (2 S/R).
3061      - rename S/R GETDIAG to DIAGNOSTICS_GET_DIAG and change type of 1rst argument
3062        (was _RL, now integer) with option = 0 to retrieve all levels.
3063      - add pieces of code to compute velocity potential at each level (new diagnostics
3064        PhiVEL, works only when UVELMASS & VVELMASS are also turned on);
3065        for now, using same params as CG2D (target-resisual, max Nb of iter ...).
3066      - fix few issues with counter diagnostics in diagnostics_setdiag.F &
3067        diagstats_setdiag.F (if diagnostic counter is itself a counter diag)
3068        and in diagnostics_fract_fill.F (do not need a valid pointer for the
3069        diagnostics counter-mate); check that definition of counter-diagnostic
3070        includes a valid counter-mate (in diagnostics_set_levels.F).
3071    o model/src (rStar):
3072      - add rStar scaling factor in diags_phi_hyd.F (similar to calc_grad_phi_hyd.F);
3073        affect solution only if z* with full pressure in EOS;
3074        update output of test-exp global_ocean.90x40x15.
3075    o pkg/seaice:
3076      - introduce siEps=1e-5 parameter
3077      - use areaMax in AREA update (part 4), consistent with ridging step (part 2.5).
3078      - re-organize SEAICE_ADD_SUBLIMATION_TO_FWBUDGET code.
3079      - introduce ALLOW_SITRACER and seaice_tracer_phys.F to handle generic seaice tracer.
3080        For now it covers, and was tested for, ice salinity and age (attached to HEFF),
3081        as well as ice cover age and ridging index (attached to AREA).
3082        For now the run time parameters (in data.seaice/SEAICE_PARM03) are
3083        SItrName (e.g. 'age') and SItrMate ('HEFF', which is the default, or 'AREA').
3084        Up to SItrMaxNum=3 tracers can be used simultaneously.
3085    o pkg/salt_plume:
3086      -introduce SPsalFRAC run time parameter that sets the fraction of the
3087       salt by-product of ice growth (SPsalFRAC*(1-SIsalFRAC)*salt typically)
3088       that gets vertically redistributed (fluxed down) by pkg/salt_plume.
3089    o model debug options:
3090      - Switch reading of debugMode from S/R INI_PARMS (parameter file "data", stored
3091        in PARAMS.h) to S/R EESET_PARMS (parameter file "eedata", stored in EEPARAMS.h).
3092      - Refine debug-msg printing selection (3 new levels):
3093        debugMode  : controls printing of debug messages (sequence of S/R calls).
3094        debugLevel : controls printing of algorithm-relevant auxiliary/debug messages
3095         debLevZero =  0 ; /* level of disabled aux. msg printing */
3096         debLevA =  1 ; /* level of minimum  aux. msg printing */
3097         debLevB =  2 ; /* level of low aux. print (report read-file opening)*/
3098         debLevC =  3 ; /* level of moderate debug prt (most pkgs debug msg) */
3099         debLevD =  4 ; /* level of enhanced debug prt (add DEBUG_STATS prt) */
3100         debLevE =  5 ; /* level of extensive debug printing */
3101        New debugLevel default: with default debugMode value (=F),
3102          = 2 (debLevB) or = 1 (debLevA) in case ALLOW_AUTODIFF is defined.;
3103          and if debugMode=T, default debugLevel = 4 (debLevD).
3104        Relation with previous settings:
3105         debLevB (=2) corresponds to former debLevA (=1)
3106         debLevD (=4) corresponds to former debLevB (=2)
3107        Note:
3108         a) if debugLevel=0, skip WRITE_GRID call when nIter0 > 0 (same as before);
3109         b) default debugLevel=1 is convenient in AD runs (avoid many file opening msgs);
3110            to recover previous default, set debugLevel=2 (e.g. AD-test hs94.1x64x5)
3111      - Add new parameter (printResidualFreq, read from PARM02 namelist) to print
3112        detailed CG solvers convergence; off (=0) by default, except if debugLevel=5.
3113    o pkg/obcs:
3114      - change OBCSfixTopo default from True to False (should not change the results);
3115        keep OBCSfixTopo=T in verification-exp. seaice_obcs.
3116    o pkg/thsice:
3117      - fix bug in thsice_calc_thickn.F (was introduced in version 1.18) in
3118        2nd layer seaice sublimation (unlikely to happen)
3119      - use Interior mask for OBCS in thsice_advection.F (similar to what is
3120        done in gad_advection & seaice_advection).
3121    o adjoint:
3122      bug fix spotted by Gael Forget:
3123      seaice_advection and thsice_advection still had
3124      legacy CPP options to avoid CS corner updates for adjoint
3125    o pkg/seaice:
3126      => Change some of the defaults (2011/05/29):
3127         - change SEAICEuseFluxForm default (from False to True)
3128         - change DIFF1 default (from 0.004 m/s to 0. m/s)
3129         And print warnings if DIFF1 is not set in data.seaice and centered
3130          avection scheme is used without any diffusion.
3131      also:
3132      - fix seaice_diffusion calls in default AdvScheme part of seaice_advdiff.F;
3133      - set SEAICEdiffKh[] default in the same way as SEAICEadvSch[]
3134      - stop if DIFF1<>0 with SEAICEadvScheme <> 2, if DIFF1<>0 with any
3135        other non-zero SEAICEdiffKh[] diffusivity, if SEAICEadvSalt=T with
3136        #undef SEAICE_VARIABLE_SALINITY, if SEAICEadvAge=T with #undef SEAICE_AGE.
3137      update results of test exp.:
3138         lab_sea: output.fd (switch to AdvScheme=33 with diffKh=20)
3139             output.hb87, output_adm.evp (SEAICEuseFluxForm=T and diffKh=200)
3140             output_adm.noseaicedyn (SEAICEuseFluxForm=T)
3141         offline_exf_seaice: output.seaicetd, output_adm (SEAICEuseFluxForm=T)
3142         seaice_obcs: output (SEAICEuseFluxForm=T)
3143      and prescribe old default for SEAICEuseFluxForm (=F) and DIFF1 (=0.004)
3144          for standard fwd & AD lab_sea tests (to keep the same output).
3145    o pkg/seaice/seaice_growth.F:
3146      - use Ian Fenty's capping formulas for actual ice
3147      thickness thoughout EVOLUTION branch.
3148      - put treatment pathological case #2) in CPP brackets
3149      (ALLOW_AVOID_INFINITESIMAL_AREA, undef by default).
3150      - update global_ocean.cs32x15 and 1D_ocean_ice_colum results accordingly.
3151    o pkg/seaice:
3152      - seaice_diffusion.F : remove the min(DX,DY) factor permanently;
3153      pass the Laplacian diffusivity (in m^2/s) diffKh as a parameter;
3154      also pass fac as a param, which can be 1. (to update the tendency
3155      field) or the time step (to update the field itself).
3156      - seaice_advdiff.F: for multidim, call seaice_diffusion with
3157      e.g. SEAICEdiffKhHeff and with fac=1; for single-dim, call
3158      seaice_diffusion with e.g. SEAICEdiffKhHeff and with fac=time step.
3159      - SEAICE_PARAMS.h, seaice_readparms.F, seaice_check.F :
3160      hooks to handle SEAICEdiffKhHeff, SEAICEdiffKhArea, etc.
3161    o pkg/seaice:
3162      diffusion with centered advection scheme (diffus.F & advect.F):
3163      - simplify S/R DIFFUS (put deltaT & DIFF1 factor outside, move EXCH outside)
3164        to just compute the laplacian of input-field.
3165      - unroll k loop (harmonic,biharmonic diff) in advect.F to save 1 exch call.
3166      - fix flux-form version in diffus.F to conserve tracer.
3167      update output of lab_sea.fd & lab_sea.hb87 (1rst set of modif affects
3168       machine truncation) and lab_sea.salt_plume (conservative flux-form modif)
3169    
3170    checkpoint62y (2011/05/26)
3171    o pkg/seaice:
3172     - seaice_growth.F : in EVOLUTION branch, always include
3173       a_QSWbyATM_cover in qnet (as it should be).
3174     - verification/global_ocean.cs32x15 : update results accordingly
3175       (output.seaice.txt output_adm.seaice.txt).
3176    o pkg/seaice + obcs:
3177     - use maskInW & maskInS in multi-dim advection and biharmonic diffusion:
3178       equivalent of assuming no tracer gradient outside the OB region.
3179       update output of seaice_obcs (uses DIFF1 <>0 => biharmonic diffusion)
3180     - remove calls to OBCS_COPY_TRACER after EXCH calls (no longer needed
3181       after changes above);
3182     - obcs+seaice cleaning: apply seaice-tracer OB values to tracer field
3183       only at OB location (instead of over a band of OLx width).
3184    o pkg/seaice:
3185     - fix wrong indices in old (non Flux-Form) diffusion default S/R diffus.F
3186       (dxG(I+1, ...) changed to dxG(I, ...), no impact on Lat-Lon grid)
3187    o pkg/obcs:
3188      - split header file "OBCS.h" into 4 separated files:
3189        OBCS_PARAMS.h, OBCS_GRID.h, OBCS_FIELDS.h & OBCS_SEAICE.h
3190       Note: OBCS_PARAMS.h & OBCS_GRID.h can be included without OBCS_OPTIONS.h
3191         (contain no conditional statement which depends on OBCS options).
3192      - move "useOBCSYearlyFields" from "data.obcs" (hold in OBCS_PARAMS.h)
3193        to parameter file "data.exf", namelist EXF_NML_OBCS (in EXF_PARAM.h).
3194    o ctrl, cost, grdchk & autodiff pkgs:
3195      - make options file more standard (like other {PKG}_OPTIONS.h file but
3196        with AD_CONFIG.h); clean-up some of the included header files.
3197    o pkg/obcs:
3198      - do not mask tracer when applying OB (tracer == 0 could generate problems)
3199      - apply tracer OB values to tracer field only at OB location (instead of
3200        over a band of OLx width)
3201      - clean-up obcs_apply_w.F & obcs_apply_eta.F (since less calls to these S/R)
3202      - remove OBCS_MULTIDIM_OLD_VERSION code in gad_advection.F and remove
3203        obcs_apply_tloc.F & obcs_apply_sloc.F
3204    o obcs in model/src:
3205      - call OBCS_APPLY_W only if NonHydrostatic.
3206      - call OBCS_APPLY_ETA only if NonLinFreeSurf.
3207      - reset dEtaHdt and wVel to zero outside OB interior region ;
3208      - leave tracer unchanged outside OB interior region: This has no effect
3209        on the solution but just to prevent unrealistic tracer value outside OB.
3210      - zero out velocity outside OB interior region: This has no effect on
3211        the solution but just to prevent unrealistic velocity outside OB.
3212    o obcs and non-lin free-surf:
3213       move call to OBCS_APPLY_R_STAR from update_r_star.F to calc_r_star.F
3214       and call to OBCS_APPLY_SURF_DR from update_surf_dr.F to calc_surf_dr.F
3215       + add argument "etaFld" to OBCS_APPLY_R_STAR & OBCS_APPLY_SURF_DR:
3216       this fixes missing EXCH + get consistent eta OB value (+ fix restart).
3217       update results of test-exp. exp4(nlfs).
3218    o exp4 (nlfs) test-exp:
3219       use OBC for Eta at Western & Eastern OB (to test prescribing Eta
3220       with NonLin-FreeSurf); update output.nlfs.txt
3221    o obcs and 2d/3d solver norm:
3222       use interior masks (maskInC) to cancel out cg2d & cg3d matrix coeff at OB
3223       and outside OB interior region (will allow to place OB further inside the
3224       domain). Depending on the domain, can affects cg2d-Norm (previous
3225       cancellation outside OB was only partial), e.g. in exp4 & obcs_ctrl,
3226       and cg3d-Norm (previous Norm was computed before canceling OB terms),
3227       e.g. in tutorial_plume_on_slope.
3228      - update output of exp.: exp4 (x2), obcs_ctrl and tutorial_plume_on_slope.
3229    o pkg rbcs:
3230      - split RBCS.h into 3 files: RBCS_SIZE.h, RBCS_PARAMS.h & RBCS_FIELDS.h
3231      - add capability to apply relaxation to horizontal velocity uVel & vVel.
3232    o pkg/grdchk: add gradient check for control variable xx_shifwflx
3233    o pkg/shelfice/shelfice_init_fixed.F
3234      fix CPP-flag combinations
3235    o pkg/seaice: Merge iceage code of Pierre Rampal
3236      * update/change/correct ice age calculations
3237      * add age updates for pathological cases
3238      Probably needs more testing...
3239    
3240    checkpoint62x (2011/05/13)
3241    o pkg/mom_vecinv:
3242       high-order vorticity scheme: use interior masks (maskInW & S)
3243       to zero-out (outside OB) gradient of vorticity.
3244    o verification exp.:
3245       turn on "useEnergyConservingCoriolis" (better discretisation) in exp.
3246       hs94.128x64x5 and seaice_obcs ; update results.
3247    o pkg/obcs:
3248      fix bug in OBeta for YZ sections in obcs_exf_load.F
3249    o pkg/ctrl, pkg/shelfice, and optim:
3250      - add new control variable xx_shifwflx (fresh water flux underneath ice
3251        shelves). This is almost as tedious as obcs-ctrl, because the
3252        variables needs its own mask.
3253      - add a cost function term that penalizes the deviation of xx_shifwflx
3254        from the first guess (zero) in analogy to other control variables
3255    o pkg/shelfice:
3256      - start basic adjoint
3257    o pkg/ctrl:
3258      - remove extra 2D field "for good measure" when initializing in
3259        ctrl_set_globfld_[xy/xz/yz].F
3260      - replace hard coded precision 32 (a bug) in ctrl_map_ini_gen by ctrlprec
3261      - improve error messages in ctrl_set_unpack_*
3262    o OBC implementation in momentum:
3263       use interior masks (maskInC,W & S) in momentum S/R:
3264       - multiply divergence, tension and some del^i.u or del^j.v by maskInC
3265       - multiply del2u,del2v by maskInW/S (biharmonic viscosity)
3266       - multiply horiz. grad of vorticity by maskInW/S (in Leith scheme)
3267       - multiply gradient of wVel by maskInW/S in del2w calculation (NonHyd)
3268       Motivation: fix/clean implementation of OBC with biharmonic-viscosity
3269        (and also with Leith/Smagorinsky harmonic-viscosity).
3270       Update output of experiment dome and exp4 (+nlfs).
3271    o exp4 test-exp:
3272      - turn on: nonHydrostatic, exactConserv, viscA4 (with momDissip_In_AB=F)
3273        and prescribe time-varying OB (without pkg/exf) for zonal-velocity
3274        at Western & Eastern Boundaries (+/- 1 per-cent); Also prescribe
3275        time-varying OB at Western-side for wVel (NonHyd); update output.
3276      - add secondary set-up (.nlfs) using NonLin FreeSurf (z*) + mom_vecinv
3277        and biharmonic-viscosity ; also use prescribed time varying OB.
3278    o pkg/obcs:
3279      fix bug in OBWeta,OBWeta indices in obcs_apply_r_star.F
3280    o model/src:
3281      - fix startTime setting when baseTime<>0 & nIter0=0 are specified ;
3282      - initialise startTime & nIter0 with unlikely values: allows to set one
3283        from the other without ambiguity.
3284    o seaice_obcs test-exp.:
3285      add small diffK4T,S to test biharmonic diffusivity with OBCS ; update output.
3286    o pkg/obcs:
3287      - remove calls to OBCS_COPY_TRACER after EXCH for T,S & pTracer:
3288        no longer needed with maskInC,W,S in pkg/generic_advdiff.
3289    o pkg/seaice:
3290      - retired SEAICE_SALINITY and SEAICE_salinity in favor of
3291        SEAICE_VARIABLE_SALINITY and SIsalFRAC, respectively.
3292      - fixed bug in the initialization of sea ice salinity variable HSALT
3293        in seaice_init_varia.F  (removed dependence on ICE2WATR)
3294    o fizhi-cs test exp.:
3295       switch reference output convention for these 2 non-standard test-exp,
3296        from: pgi  6.1-5 on faulks (FC.6, -of linux_ia32_pgf77+authors_fc5)
3297          to: ifort 11.1 on baudelaire (FC.13, -of linux_amd64_ifort11)
3298       reason: faulks might get retired soon and pkg/fizhi has still Pb with gfortran
3299    o model/inc:
3300      - change type of PmEpR array (from _RS to _RL) to fix restart (with "-use_r4")
3301        of exp. global_ocean.90x40x15 (Suncronous time-stepping + Real-FW + NonLin-FS)
3302    o pkg/seaice:
3303      - fix calculation of saltFlux and saltPlumeFlux when using SEAICE_SALINITY
3304    o verification/lab_sea, 1D_ocean_ice_column, seaice_obcs, global_ocean.cs32x15
3305      - updated output*.txt files due to bug fixes in salt, saltPlumeFlux,
3306        and initial HSALT
3307    
3308    checkpoint62w (2011/04/26)
3309    o pkg/mom_fluxform:
3310      - fix calculation of del2u & del2v (no-slip BC) when using Non-Lin Free-Surf.
3311      - use parameter "sideDragFactor" in no-slip BC side-drag part.
3312      - update output of exp. global_ocean.90x40x15
3313    o pkg/mom_vecinv:
3314      mask del2u & del2v (no effect on results, but cleaner & closer to mom_fluxform)
3315    o update seaice exp.:
3316      use more consistent parameter values (remove "backward compatability only":
3317       ICE2WATR, SEAICE_lhSublim, SEAICE_cpAir, SEAICE_rhoAir + set rhoConstFresh)
3318      related to thermodynamics seaice. Update output (fwd+AD) of exp.:
3319       1D_ocean_ice_column (x2), lab_sea (x8), ioffline_exf_seaice (x2) & seaice_obcs
3320    o update test-exp global_ocean.90x40x15:
3321      o use default CD_CODE_OPTIONS file (Adams-Bashforth on CD Mom & Coriolis).
3322      o increase Overlap size from 2 to 3 (to allow to test bi-harmonic Visc.)
3323      o new pickup-files from a 100.yr run with pkg/down_slope (input.dwnslp params)
3324      o turn on zStar & viscA4 in standard set-up (dir input/)
3325        and update output files: output.txt & output.dwnslp.txt
3326    o new AD-test experiment: obcs_ctrl
3327      (From Matt MITgcm_Contrib/SOSE/BoxAdj) to test OBCS as control vector.
3328    o pkg/dic:
3329      fix two bugs in handling water vapour pressure in carbonate chemistry
3330      and air-sea fluxes. Found by Val Bennington and Galen McKinley
3331      (add DIC Option = WATERVAP_BUG to recover old results)
3332      update output of tutorial_global_oce_biogeo (fwd+AD) & tutorial_dic_adjoffline
3333    o adding allowInteriorFreezing option to check for water below freezing point
3334      at depth and bring the negative heat anomaly to the surface level
3335    o pkgs _fields_load:
3336      - extend GET_PERIODIC_INTERVAL to deal with non-periodic case (from pkg/rbcs)
3337      - use new S/R GET_PERIODIC_INTERVAL in pkgs:
3338        bulk_force, cheapaml, cfc, dic, obcs (+ ctrl/ctrl_get_gen_rec), offline and
3339        rbcs to get interpolation weights and time reccord number.
3340      - fix multi-threading in aim_fields_load.F
3341      - apply EXCH to temp arrays [0,1] after reading in dic_fields_load.F
3342    o external_fields_load:
3343      new S/R GET_PERIODIC_INTERVAL to calculate which time-record (and linear
3344       interpolation weights) to use in a periodic time-series ; do not divide by
3345       time-step to convert to integer:
3346       - this fixes case where externForcingPeriod is not multiple of time-step
3347          (Thanks to Christopher L. Wolfe)
3348       - this fixes case where externForcingPeriod is an odd multiple of time-step
3349         (was wrong by half of time-step); update results of tutorial_global_oce_in_p.
3350      store index of time-record which is currently loaded:
3351       - works without any assumption on sequence of calls to EXTERNAL_FIELDS_LOAD ;
3352       - needed for the adjoint but not yet used because of extensive recomputations;
3353         (to be fixed soon)
3354    
3355    checkpoint62v (2011/04/02)
3356    o verification/1D_ocean_ice_column added to test Ian Fenty's
3357      pkg/seaice_growth.F modifications for improving sea ice code differentiability
3358    o update output of exp4, internal_wave, seaice_obcs, tutorial_plume_on_slope
3359      (new velocity statistics after changing maskInW & maskInS definition)
3360    o pkg/generic_advdiff with OBCS:
3361      use maksInW & maskInS in advective flux and in biharmonic diffusion calculation:
3362      equivalent to assumption of no tracer gradient outside the OB region.
3363      This will affect the results if using obcs+biharmonic diffusion.
3364      update output_adm.txt of experiment bottom_ctrl_5x5 (not expected since no obc)
3365    o pkg/obcs:
3366      change definition of maskInW & maskInS: leave OB edges inside (maskIn=1)
3367      (e.g., maskInW(OB_Ie)=1 ) so that velocity normal-component at OB is still
3368      in Interior region. No impact on solution but affects Velocity monitor stats.
3369    o pkg/ptracers (adjoint)
3370      New option AUTODIFF_PTRACERS_SPLIT_FILES for writing separate
3371      tape file for each tracer
3372    o model/inc/src and pkg/autodiff: add parameters that allow to turn
3373      of parts of the adjoint code at run time. For now, there are only
3374      useKPPinAdMode, useGMrediInAdMode, and useSEAICEinAdMode. These
3375      parameters are set in data.pkg.
3376      This is the lazy coward's version of doing this, but still useful for
3377      debugging. In order to do it right, everything needs to be moved to
3378      pkg/autodiff.
3379    o pkg/autodiff: fix global_sum_tile_ad.F by resetting adsumPhi at
3380      the end; this fixes the adjoint balancing code for open boundaries.
3381    o pkg/ctrl:
3382      - change behavior of xx_${varname}period to be analogous to exf-conventions:
3383        xx_${varname}period =   0.,  means time-independent control part
3384        xx_${varname}period = -12., means one-year-periodic monthly control part
3385      - introduce helper routine ctrl_init_rec (part of ctrl_init.F) to
3386        clean up ctrl_init a little, remove unused variables
3387      - ctrl_init: fixed the handling of the start/endrec for obcs-variables
3388      - move "call cal_GetMonthsRec" from s/r ctrl_get_gen to s/r ctrl_get_gen_rec
3389    
3390    checkpoint62u (2011/03/15)
3391    o model/src:
3392      - for the adjoint, change NonLin-FreeSurf initialisation sequence: fill-in
3393        h0Fac from INITIALISE_FIXED and reset hFac to h0Fac in INITIALISE_VARIA ;
3394      - in initialise_varia.F (except for ALLOW_DEPTH_CONTROL) remove 2nd call to
3395        INI_DEPTHS, INI_MASKS_ETC & INI_LINEAR_PHISURF.
3396    o pkg/ctrl/obcs/ecco:
3397      - remove obsolete, unused, and partially broken code:
3398        ctrl_obcsvol/ctrl_obcsbal/ctrl_volflux and code within
3399        ALLOW_CTRL_OBCS_BALANCE
3400      - put a stop statement into ecco/cost_obcsvol.F, but also add
3401        cost_obcsvol to ecco_ad_diff.list
3402    o pkg/ecco: fix counting cost function contributions for obcs (code
3403      by Matt M.) and diffkr for diagnostics
3404    o pkg/ecco, pkg/ctrl, pkg/grdchk:
3405      add cost penalty terms for initial uvel, vvel, eta controls
3406      and I/O for prior error files
3407    o pkg/mdsio:
3408       move mds_check4file.F from eesupp/src to mdsio_check4file.F ; add option
3409       (new argument) to check for tiled file in mdsioLocalDir : this fix the
3410       restart from pickup_som , pickup_dic (& dic_co2atm) with mdsioLocalDir.
3411    o pkg/ctrl:
3412     - ctrl_obcsbal.F, ctrl_obcsvol.F: replace last calls of ctrl_getrec by
3413       ctrl_get_gen_rec, put a stop statement into ctrl_getrec. Remove
3414       unused and superfluous variables
3415     - ctrl_get_gen_rec.F: catch the case of xx_genperiod=0.
3416    o pkg/ecco
3417     - enable adjoint of Stevens OB
3418    o pkg/ctrl/ecco/grdchk:
3419      - remove global declaration of tmpfldx/yz and tmpfldx/yz2.
3420        Fortunately, we do not have any tests for the numerous cpp-flagged
3421        option of "obcs as control parameters" so we will never know
3422        if this is an improvement (but at least now things compile).
3423      - remove an obsolete initialization from ecco_cost_init_barfiles.F
3424      - fix some problems within never used ifdefs to make the code compile
3425    o pkg/obcs:
3426     - Refine Interior mask definition to work with more complex OB (e.g.
3427       if OB_Ie < OB_Iw); In case default setting is not sufficient, allows to
3428       read in Interior mask from file. Check if Interior mask is consistent
3429       with OB list of indices.
3430    o pkg/seaice
3431     - beginning code for a seaice tracer package,
3432       but currently only used for seaice age: SEAICE_AGE
3433       SEAICE_num = 4
3434       iTracer = 1: area-weighted ice age
3435               = 2: volume-weighted ice age
3436               = 3, 4: template for one-year vs. multi-year ice
3437       data.seaice has new namelist SEAICE_PARM03 for arrays related to
3438       SEAICE_num
3439    
3440    checkpoint62t (2011/03/05)
3441    o pkg/obcs:
3442     - obcs_apply_uv.F: change to a 2 steps method, first tangential component;
3443       then normal component. This ensures that the normal component is set
3444       correctly even when it conficts with tangential setting from an other OB.
3445       Affects results of test-experiment seaice_obcs: update the output.txt
3446    o pkg/obcs:
3447     - add code to monitor statistics of dynamical fields at OB.
3448     - take OBCS_BALANCE code out of obcs_calc.F into new S/R OBCS_BALANCE_FLOW :
3449       - fix to OBCS_BALANCE code (right hFac ; deal with simple OB intersection).
3450       - change default: balance the Net inflow through all OB (instead of balancing
3451         each OB separately); keep the old method if setting OBC_balanceFacX < 0.
3452     - switch on useOBCSbalance in dome experiment: only correct Western OB outflow
3453       to match Nortern OB inflow (OBCS_balanceFacN=0).
3454    o pkg/seaice:
3455     - redefined actual sea ice age to be ICEAGE/HEFF ifdef SEAICE_AGE_VOL
3456    o pkg/seaice (seaice_growth v 1.113):
3457     - reverting seaice_growth to v 1.111 in order to have code with exact bit
3458       compatibility with MITgcm_contrib/ifenty/Fenty_seaice_thermo_code_merge
3459       CPP option SEAICE_OCN_MELT_ACT_ON_AREA removed in v 1.112 is reintroduced
3460       runtime flag SEAICEareaFormula is kept but is inactive
3461    o model/src:
3462     - add new param to scale curvilinear grid distance and area when using
3463       a different sphere radius from the grid-files.
3464     - test/check multi-threads EXCH applied to local variable (cg2d_x)
3465    o adjoint:
3466     - enable adjoint of Stevens OB
3467     - add dummy_in_dynamics to enable extraction of ADJrhoinsitu
3468       (a bit delicate because of potentially modified adj. common block structure;
3469       current switch is ALLOW_AUTODIFF_MONITOR_DIAG, could be changed later)
3470    
3471    checkpoint62s (2011/02/15)
3472    o pkg/seaice (seaice_growth v 1.112):
3473     - introduce SEAICEareaFormula run time parameter, which selects the recipe for
3474       computing the ice cover tendency from effective thickness tendencies. Include
3475       Ian Fenty's formula.
3476     - remove 'undef SEAICE_OCN_MELT_ACT_ON_AREA' which may now be achieved using
3477       SEAICEareaFormula.
3478     - simplify notations for the various d_HEFF/d_AREA terms.
3479    o pkg/gmredi:
3480     - add Boundary-Value-Problem bolus transport (Ferrari etal, OM 2010) code
3481       from Christopher Wolfe (UCSD); add partial cell factor in vertical derivative;
3482       add a verification test-run (front_relax.bvp) to test GM_useBVP.
3483    o pkg/seaice (seaice_growth v 1.111):
3484     - for SEAICE_DO_OPEN_WATER_GROWTH, replace Gael's implementation with Ian's.
3485     - the new SEAICE_DO_OPEN_WATER_MELT allows open-water air-sea heat fluxes to
3486       also melt ice.
3487    o pkg/seaice:
3488     - McPhee formula for Ice-Ocean fluxes (provided by Ian Fenty).
3489     - can be used by #define MCPHEE_OCEAN_ICE_HEAT_FLUX in SEAICE_OPTIONS.h
3490    o pkg/cheapaml:
3491     - from Nico Wienders: New version of this package.
3492    o pkg/flt:
3493     - add CPP options to prevent floats to re-enter the opposite side of
3494       a periodic domain (default: keep periodicity)
3495    o pkg/gmredi:
3496     - apply exchange to GM_PsiX,GM_PsiY to get valid values near CS-corners
3497       (needed for multi-dim advection).
3498     - switch on GM Advective form in global_ocean.cs32x15 and update output.txt
3499    o model/src:
3500     - fix wrong re-setting of addMass array (ALLOW_ADDFLUID) for atmospheric run.
3501    o tutorial_tracer_adjsens
3502     - extend to NLFS and replace maskC by hFacC
3503       (change reference output accordingly)
3504    
3505    checkpoint62r (2011/01/24)
3506    o testreport:
3507     - add option -deloutp (-do) to remove output file after successful run
3508     - add option -mfile (-mf) for MPI machile-file and for each test-exp,
3509       extract exact list of procs from this file ; adjust COMMAND by
3510       replacing TR_MFILE & TR_NPROC with local machile-file & Nb of MPI procs.
3511    o pkg/ecco: replace old ineffective way of penalizing deviations from
3512      first guess (of obcs) with code by Matt Mazloff
3513    o pkg/ctrl: add code that allows the use of ALLOW_OBCS?_CONTROL without
3514      exf/cal
3515      - ctrl_init: fix initialisation (computation of diffrec) for obcs-ctrl
3516        and handle case of obcs?period == 0
3517        Not affected by these changes: There is still an inconsistency in
3518        the computation of start/endrec for the obcs variables for ALLOW_CAL
3519        defined (see comment by Menemenlis, 7-Mar-2003)
3520      - make S/R ctrl_get_gen_rec return something meaningful even if
3521        ALLOW_CAL is not defined
3522      - ctrl_getobcs?: simplify code so that it does not need to use
3523                       S/R exf_swapfields
3524    o testreport:
3525       allow to test MPI with different number of processors for each experiment:
3526       create file "SIZE.h.mpi" in each build dir.
3527       Note: update of "-command" argument not yet implemented.
3528    o model/src, pkg/autodiff, pkg/ecco, pkg/seaice:
3529      alleviate the need for additional 3D tapes when using
3530      the non-inear free surface in the adjoint. This is done
3531      by adding an 'update' of hfacc etc. to their current
3532      value at the beginning of forward_step.F.
3533    o pkg/seaice
3534      seaice_lsr: move stress-divergence computations out of outer pseudo-
3535      timestepping loop
3536    o pkg/obcs/obcs_prescribe_read.F: move 'CALL OBCS_EXTERNAL_FIELDS_LOAD'
3537      up, so that the calls of the ctrl_* subroutines are really at the end
3538      of the routine.
3539    o pkg/gmredi:
3540      allow to specify a 2-D horizontal map and a 1-D vertical profil
3541      as scaling factor for Isopycnal diffusivity (Redi) and GM diffusivity.
3542    o pkg/seaice:
3543      move lsr iterations from seaice_dynsolver to seaice_lsr.
3544    o pkg/seaice:
3545      reduce memory footprint of seaice mutldim advection tapes,
3546      by using a 2D tape independent of the generic_advdiff ones,
3547      and setting GAD_AREA=1 etc. rather than GAD_AREA=101 etc.
3548    
3549    checkpoint62q (2010/12/29)
3550    o model/src:
3551      - check horizontal grid-spacing for unset or zero/negative values.
3552      - change AD test hs94.1x64x5 to be truly a 2-D set-up.
3553    o pkg/flt:
3554      - use (recent) mdsio S/R MDS_READVEC_LOC instead of local FLT_MDSREADVECTOR
3555      - precision of input and output files set according to readBinaryPrec
3556        and writeBinaryPrec (previously always 64.b), pickup remains at 64 bits.
3557      - initial float position from tiled file was not converted to index space
3558        (looks like a bug): fixed to make it similar to initial pos. global file.
3559    o global_ocean.cs32x15:
3560       change SIZE.h of AD set-up to get same tiling as with MPI.
3561       Update output_adm, output_adm.thsice (pass@14) & output_adm.seaice (fail@11)
3562    o model/src:
3563       add flag to control printing of domain fields (bathymetry, hFac ...) in
3564       ini_mask_etc (call to plot_fieds_xy*).
3565    o pkg/thsice:
3566       if useEXF, some forcing fields are not valid in overlap: fixed by computing
3567       over the interior only + apply EXCH at the end (like with SEAICE advection).
3568    o pkg/mdsio:
3569      - add 2 arguments to S/R MDS_PASS_R4/8toRL/S for overlap size of buffer
3570        to copy to/from, so that it can be used to replace MDS_PASS_WH_R8toRL/RS.
3571      - change barrier call for safe multi-threads access to 3-D shared buffer.
3572      - MDS_READ/WRITEVEC_LOC use buffers from MDSIO_BUFF_3D.h (instead of local ones)
3573      - replace call to MDS_PASS_WH_R4/8toRL with call to MDS_PASS_R4/8toRL and
3574        remove the 4 S/R MDS_PASS_WH_R4/8toRL/S.
3575    o pkg/flt:
3576      - add fourth-order Runge-Kutta integration
3577      - add basic exch2 support (only 1 facet supported so far!)
3578    o pkg/mdsio+rw:
3579      new S/R to read local (or tile independent) vector (read counterpart of
3580       mds_writevec_loc, and front-end write_glvec_rl/rs).
3581    o global_ocean.cs32x15: additional input_ad.seaice experiment
3582        that uses pkg/seaice rather than pkg/thsice.
3583        (using multidim advection for seaice)
3584    o towards more F95 syntax for array specification in namelist:
3585      - change "data.diagnostics" (data.ptracers was changed before checkpoint62p)
3586        of all verification experiments.
3587           e.g.:    line: fields(1,3)='ETAN    ','ETANSQ  ',
3588          was changed to: fields(1:2,3)='ETAN    ','ETANSQ  ',
3589      - finish adding "-DNML_EXTENDED_F77" to DEFINES list in pgf77 and g77 optfiles
3590    o global_ocean.cs32x15: additional input.seaice experiment
3591        that uses pkg/seaice rather than pkg/thsice.
3592    
3593    checkpoint62p (2010/12/17)
3594    o pkg/thsice: rename (ad tape index) iicekey as ticekey, and move it
3595        to THSICE_SIZE.h to avoid conflict with pkg/seaice.
3596    o pkg/seaice: add seaice_diffusion.f seaice_map_thsice.f to adjoint.
3597        allow for use of multim. advection in seaice adjoint.
3598    o pkg/seaice: add diagnostics for snow precipitation and sublimation flux
3599      - first attempt to close budgets by taking into account the freshwater
3600        flux implied by the sublimation of snow and ice. So far only the
3601        volume budget is closed, turn on with soon-to-be-retired-again CPP-Flag
3602        SEAICE_ADD_SUBLIMATION_TO_FWBUDGET
3603    o eesupp/src:
3604      new S/R with new option (NML_EXTENDED_F77) to change array specification
3605      from F95 standard to commonly accepted extended F77 form.
3606      This would allow to use F95 syntax in namelist (needed with gfortran 4.4.5)
3607      and to revert back to the original syntax (with -DNML_EXTENDED_F77)
3608      for less tolerant f77 compiler (e.g., pgf77, g77).
3609    o globalFiles:
3610      commented out in parameter file "data" since it's not safe with MPI
3611      (e.g., wrong on aces); keep it if useSingleCpuIO=T (but not doing much
3612      in this case); no longer commented out in restart test (tst_2+2).
3613    o add adTapeDir to specify a special directory where adjoint tapes are
3614      written/read (adread_adwrite.F). adTapeDir is specified in data/PARM05
3615      and cannot be used together with mdsioLocalDir.
3616    o nesting pkgs:
3617      - packages_init_variables : put call to OBCS_INIT_VARIABLES in last position
3618      - update Gianmaria's Nesting pkgs (from Contrib/nesting_sannino)
3619      - add parameter files + utils dir + output from short run on beagle.
3620    o pkg/seaice:
3621        fix seaice_growth.F store directives; update results of exp. lab_sea.ad
3622    o pkg/seaice: explicitly store tsurfloc in seaice_solve4temp.F to avoid
3623      unnecessary copying in adjoint code, requires new parameter NMAX_ITER
3624    
3625    checkpoint62o (2010/11/25)
3626    o pkg/exf:
3627      - change CPP option EXF_VERBOSE to run-time logical param exf_verbose.
3628    o pkg/seaice:
3629      - seaice_ocean_stress: split a loop for better vectorization of the
3630        adjoint code
3631      - seaice_growth.F: fix bug in conservation of freshwater connected to
3632        capping of heff, put contribution into d_HEFFbyNEG
3633      - replace irritating parameters SEAICE_latentWater/Ice and SEAICE_sensHeat
3634        by something more sensible (parameters that are what their name implies)
3635      - change some defaults, so that by default exf-parameters are used for
3636        things like rhoAir, cpAir,latent/sensible heat parameters, in order
3637        to reproduce the old results, many data.seaice now contain funny values
3638        for cpAir and latent heat of sublimation
3639    o packages_readparms.F: move exf_readparms up in line so that
3640        exf-parameters are visible for other packages (e.g. seaice)
3641    o debugMode & debugLevel=2:
3642      - differentiate between debugMode & debugLevel=2:
3643        debugMode: controls printing of debug messages (sequence of S/R calls).
3644        debugLevel: controls printing of algorithm intermediate results and stats.
3645      - remove "if debugLevel=2 => debugMode" but keep "debugMode =>  debugLevel=2";
3646        => allows to print debug-stats without all sequence of call messages.
3647      - switch control of debug print from debugLevel to debugMode in many S/R.
3648    o pkg/obcs (obcs-sponge):
3649        fix bug that was introduced on Oct 25 (in dynamics.F v1.151): put back the
3650        call to OBCS_PRESCRIBE_EXCHANGES (need to exch gU,gV when using obcs-sponge)
3651    o pkg/generic_advdiff:
3652      - record overlap minimum size for each advection scheme;
3653      - refine criteria on overlap minimum size;
3654      - check and stop (in gad_check) if overlap size is too small.
3655    o pkg/obcs:
3656      - with ptracers: remove multiple calls to obcs_apply_ptracer (only done
3657        once, in ptracers_implicit.F)
3658      - with seaice: remove test on empty file name in obcs_apply_seaice (always
3659        apply OB values when tile has OB)
3660    o model/src, coriolis setting:
3661      - integer parameter "selectCoriMap" (=0,1,2) replaces 3 logical
3662        useConstantF, useBetaPlaneF, useSphereF ; can now read coriolis from
3663        files (selectCoriMap=3) with any grid.
3664      - add parameter "fPrime" for constant second Coriolis coeff (default=0).
3665    o pkg/seaice/seaice_growth.F:
3666        a few cosmetic changes that reduce the number of lines of code
3667    o pkg/obcs: add boundary conditions following Stevens (1990)
3668      - the code follows old MOM/NAOSIM code
3669      - so far it is only implemented for the eastern and western boundaries
3670        and NOT for pTracers
3671    o pkg/rbcs:
3672      - replace rbcsInIter by rbcsForcingOffset, the time in seconds at the
3673        beginning of the first rbcs forcing period.
3674      - add option rbcsSingleTimeFiles that makes rbcs read forcing data like the
3675        offline package, i.e., one file per time, labeled by iteration number;
3676        deltaTrbcs sets the timestep with which the data was generated;
3677        rbcsIter0 is the forcing iteration corresponding to rbcsForcingOffset.
3678      - rbcsForcingCycle=0 makes forcing non-cyclic.
3679      - make arithmetic safe for negative times and odd forcing periods.
3680    
3681    checkpoint62n (2010/11/09)
3682  o pkg/seaice:  o pkg/seaice:
3683      fix masking in free-drift S/R ; update results of exp. lab_sea.fd      fix masking in free-drift S/R ; update results of exp. lab_sea.fd
3684  o pkg/obcs:  o pkg/obcs:

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