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revision 1.1641 by dimitri, Mon Apr 2 04:34:07 2012 UTC revision 1.2027 by mlosch, Thu Jul 17 15:36:24 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/fizhi:
8      - add parenthesis around fizhi tendencies in fizhi_tendency_apply.F: this
9        affects results at machine truncation level. Update output of experiments
10        fizhi-cs-32x32x40 (12 digits for cg2d) & fizhi-cs-aqualev20 (13 digits).
11    o pkg/seaice: more clean up
12      - rename TAF common block tapes to be more consistent and remove
13        unnecessary duplicates
14      - add store directives to remove more recomputations, but use smaller
15        tapes (and adjust keys) when SEAICE_LSR_ADJOINT_ITER is undefined.
16        The idea behind this flag is to reduce the memory footprint when the
17        adjoint of the LSR is not required. As of now, defining the flag
18        SEAICE_LSR_ADJOINT_ITER increases 4 common block tapes for 2D field by
19        a factor of SOLV_MAX_FIXED (=500 by default in SEAICE_SIZE.h).
20        For experiment offline_exf_seaice, this means on a linux box with gfortran
21        nearly a factor of 10 (but keep in mind there is mostly seaice code in
22        this experiment):
23        > size mitgcmuv_ad
24        text    data        bss     dec        hex  
25        5100659 1216  220458952  225560827  d71c8fb
26        5339425 1200 1868783272 1874123897 6fb4dc79 (SEAICE_LSR_ADJOINT_ITER)
27        but only a moderate increase of 36% for global_ocean.cs32x15:
28        text    data        bss     dec        hex
29        6695027 1648 1014578664 1021275339 3cdf6ccb
30        6695203 1648 1382505320 1389202171 52cd8afb (SEAICE_LSR_ADJOINT_ITER)
31      - note: there are still recomputations in global_ocean.cs32x15 and
32        offline_exf_seaice and the gradient agreement changes (gets a
33        little worse) for global_ocean.cs32x15 (-> update output_adm.seaice.txt)
34      - in general, the AD gradients still are wrong
35    o OpenAD
36      - clean up code_oad/ directories somewhat by moving files
37        dontCompile, dontTransform, keepOriginal to OAD_support/
38    o model/src:
39      - using MOM fluxform and Non-Lin Free-Surf with momDissip_In_AB=F
40        (not currently tested): add dissipation terms before NLFS rescaling of
41        tendencies (previously done after).
42    o pkg/diagnostics:
43      - write stats-diags in ascii file with more digits (same as in monitor).
44    o pkg/down_slope:
45      - drop the bi,bj dimension of argument recip_hFac in S/R DWNSLP_APPLY; with
46        NLFS (not tested), use new recip_hFac value in order to conserve tracer.
47    o model/src:
48      - new file "apply_forcing.F" containing all the code previously in
49        external_forcing.F, but with new argument list: pass, as new argument,
50        the current level tendency array to update (instead of a direct update
51        of the common bloc array). Change the corresponding calls.
52      - add CPP option USE_OLD_EXTERNAL_FORCING (default is undef) to use
53        EXTERNAL_FORCING_U,V,T,S subroutines (for backward compatibility).
54    o pkg/seaice/seaice_lsr, a little bit of clean up
55      - rearrange some code blocks, so that now all calculations for
56        setting up the right-hand-sides done within one single block
57        (I find that easier to read and understand)
58      - rearrange freedrift-code to reduce the number of ifdefs
59      - adjust some indentations and comments
60    
61    checkpoint64z (2014/07/10)
62    o model/src and several pkgs:
63      - change argument list of all S/R called from external_forcing.F and
64        called from ptracers_forcing.F (renamed to ptracers_apply_forcing.F)
65        to pass, as argument, the current level tendency array to update
66        (instead of a direct update of the common bloc array).
67      - change also (in the same way) argument list of PTRACERS_APPLY_FORCING;
68      - rename taueddy_external_forcing.f to taueddy_tendency_apply.F
69    o pkg/seaice/seaice_lsr.F
70      - always initialize local arrays in seaice_lsr_tridiagu/v
71      - add more local tapes to seaice_lsr_tridiagu/v
72      - move storing u/vice(:,:,bi,bj) out of seaice_lsr_tridiagu/v, but
73        keep it in bi/bj loop; this seems to be essential
74      - gradients are still wrong but only by 4-7 orders of magnitude
75        instead of 15 orders of magnitude, lab_sea improves a little
76    o pkg/seaice
77      - (pkg/autodiff) remove storing/restoring of seaiceMaskU/V that
78        generates unnecessary code in seaice_lsr_ad
79      - add more store directives in seaice_lsr to avoid unnecessary code
80        in seaice_lsr_ad
81      - exclude some residual computations in seaice_lsr when
82        ALLOW_AUTODIFF_TAMC is defined in order to avoid unnecessary code
83        in seaice_lsr_ad
84      - add more storing, a new tape (model/src/the_main_loop.F) and
85        another key for SEAICE_LSR_VECTORIZE_ZEBRA (the local keys ilockey
86        and klockey should be checked by a specialist)
87      - modify ( define SEAICE_VECTORIZE_LSR and SEAICE_LSR_ADJOINT_ITER )
88        and update lab_sea after previous changes in pkg/seaice below
89    o pkg/autodiff:
90      - introduce useSmoothCorrel2DinAdMode, SEAICEapproxLevInAd, and
91        viscFacInAd : run time parameters allowing for adjoint switches
92        note : logic for useSmoothCorrel2DinAdMode is in ctrl_readparms.F
93    o pkg/ecco:
94      - introduce cost_gencost_boxmean.F that computes a box mean
95        temperature (for use in adjoint sensitivity studies).
96    o model/src/set_defaults.F : initialize viscFacAdj to 1.
97    o pkg/mom_common/mom_calc_visc.F:
98      - ifdef ALLOW_AUTODIFF then include viscFacAdj factor.
99    o pkg/seaice/seaice_summary.F:
100      - statement for SEAICEadjMODE now in autodiff_readparms.F
101    o pkg/seaice:
102      - remove some store directives and add new ones in an effort to get
103        finally rid off the recomputation warnings. This is successful
104        when SEAICE_VECTORIZE_LSR ***and*** SEAICE_LSR_ADJOINT_ITER are
105        defined (i.e. no extensive recomputation warnings left), but there
106        are still too many recomputations on the solver iteration level
107      - define SEAICE_VECTORISZE_LSR in offline_exf_seaice/code_ad/SEAICE_OPTIONS.h
108      - move definition of MPSEUDOTIMESTEPS into TAMC-block in
109        SEAICE_SIZE.h
110      - add a store directive in S/R seaice_calc_viscosities
111    o pkg/seaice (ITD code):
112      - fix definition of Hlimit for multi-threaded case
113      - use double precision arithmetic to compute Hlimit: this affects results;
114        update output of experiment seaice_itd.
115    o replace content of verification/seaice_itd
116      - instead of a 1D column use the configuration of offline_exf_seaice
117        to test the ice thickness distribution code with ridging
118      - this is a first shot at this experiment
119      - change of some defaults of ridging parameters SEAICEhStar (from
120        100 to 25) and SEAICEmuRidging (from 5 to 3) in seaice_readparms.F
121        and lot of new comments.
122    
123    checkpoint64y (2014/06/20)
124    o pkg/seaice/seaice_reg_ridge.F:
125      - modify the regularization of very small volumes of ice; only check
126        total volume HEFF, and do not apply correction to individual ice
127        classes because that leads to funny patterns in the heat and fw-fluxes
128        into the ocean. Adjust seaice_itd/results/output.txt
129      - replace nITD by SEAICE_multDim in loop-ranges
130    o pkg/exf:
131      - add code to process the case field period = -12. with UV interpolation.
132      - move debug print (formerly active when exf_verbose=T) from EXF_getFFieldRec
133        into S/R that calls it (i.e., exf_set_gen.F, exf_set_uv.F & obcs_exf_load.F)
134    o verification/global_with_exf:
135      - switch all fields period to -12. (was previously untested) in input/data.exf
136        (but keep secondary test ".yearly" unchanged); update the reference output.
137    o pkg/cal:
138      - new calendar type "noLeapYear" for 365 days calendar without any leap year.
139    o pkg/exf:
140      - new integer parameter "exf_debugLev" (default set to main model debugLevel)
141        to replace logical switch "exf_verbose"
142      - report in STDOUT when loading a new record (if exf_debugLev >= 3)
143    o pkg/sbo:
144      - update from Katherine Quinn: evaluate mass directly from density and SSH
145        (budget using Finite Volume method) instead of from bottom pressure.
146      - allow testreport to collect few selected SBO output ; tested in exp.
147        global_ocean.90x40x15 (after updating the results, to include SBO output).
148      - fix some multi-threading issues (in output part).
149    o model/src & most packages:
150      - always call {PKG}_READPARMS even if corresponding use{PKG}=F;
151      - in {PKG}_READPARMS, in case use{PKG}=F: add a call to new S/R
152        PACKAGES_UNUSED_MSG to print a weak warning when parameter file
153        "data.{pkg}" exist ; and leave the S/R (return) just after.
154      - more standard LAND pkg interface (land_init_fixed.F, land_check.F).
155        + call LAND_READPARMS from packages_readparms.F
156    o pkg/seaice:
157      - remove code that resets useThSice in S/R seaice_readparms and
158        replace it by a warning in S/R seaice_check
159      - remove parameter MULTDIM, replace with nITD and runtime
160        parameter SEAICE_multDim (still hard-wired to nITD if
161        SEAICE_ITD is defined)
162    
163    checkpoint64x (2014/05/24)
164    o verification/lab_sea:
165      - update adjoint and TLM output following changes to pkg/salt_plume
166      - un-do the update after putting back local recip_Cp in few places.
167    o pkg/salt_plume: modifications by An Nguyen:
168      - add capability to do brine rejection (salt-plume) as function of
169        volume+tracers (instead of only salinity tracer).
170      - conserve volume by exchanging volume from each kLev to above to
171        accommodate in-coming brine volume
172      - store surface and klev exchanged fraction + volume in 4 new 3-d arrays
173      - switch KPP surf buoyancy due to brine forcing to 3-d
174        (3 more 3-d arrays, 2 for SPforcing[T,S], 1 for boplume)
175      - add salt_plume_volfrac, salt_plume_apply, salt_plume_tendency_apply_t
176      - unrelatedly, also add ad-hoc capability to vary salt_plume scheme
177        in East/West Arctic.
178    o pkg/sbo:
179      - incorporate modifications from Katherine Quinn to enable the use of sbo
180        pkg in ECCO-v4 set-up ; remove SBO-TimeAve output ; add monitor-like
181        output for future testreport verification (unfinished).
182    o pkg/atm_phys:
183      - change diagnostics (AtPh_Trf & AtPh_Qrf) of DARGAN_BETTSMILLER S/R:
184        skip the reseting of t_ref & q_ref to initial t & q ; this preserve the
185        output of S/R CAPECALCNEW (Parcel temp & q) for diagnostics.
186    o pkg/seaice
187      seaice_calc_ice_strength.F: modify expression to avoid divisions
188        (affects truncation)
189      seaice_do_ridging.F: clean up the insectarium
190      - fix a bug that was compensated by areaScaling (-> remove areaScaling code)
191      - added SEAICEsnowFracRidge to redistributed snow (2nd bug)
192      - set closing/openingRate to zero where no extra iteration is need (3rd bug)
193      - add some debugging information and error messages (warnings)
194    o model/src: modifications relatd to atmosphere p*:
195      - Switch to more accurate p* coordinate slope term (calc_grad_phi_hyd.F)
196      - With p* or Sigma-P, use constant reference Pot.Temp (thetaConst) instead
197        of vertical profile tRef in geopotential background and anomaly.
198      - Acount for true p* correction in theta <-> T conversion in pkg/aim_v23
199        and pkg/atm_phys.
200      - Update FWD output of experiments: aim.5l_cs (x2), fizhi-cs-32x32x40,
201        fizhi-cs-aqualev20, fizhi-gridalt-hs, tutorial_held_suarez_cs, cpl_aim+ocn.
202    o pkg/seaice: fix a bug in seaice_prepare_ridging.F, forgot a sqrt
203    o pkg/ptracers: compute ptracer source/sink due to linear free surface.
204        not used right now, but can be used in BGC packages to fix conservation.
205    o pkg/dic, pkg/gchem: move tracer_meanarea to gchem, so it can be used by
206        other packages too.
207    o pkg/seaice/seaice_calc_ice_strength.F: replace SEAICE_rhoSnow by
208        SEAICE_rhoIce in the Rothrock (1975)-type strength calculations (bug fix)
209    o model/src:
210      - since we have several heat capacity (even in model/src), define "recip_Cp"
211        as local variable (no longer in common block) to avoid any confusion.
212      - add thetaConst in PARAMS.h (to be used with pStar or sigma-P coords).
213    o pkg/exf:
214      - from Jeff Scott: add option (#define EXF_CALC_ATMRHO) to calculate local
215        air density as function of air Temp, Humidity and atm pressure.
216    
217    checkpoint64w (2014/05/02)
218    o verification:
219      - update output_adm.txt files for experiment global_ocean.cs32x15 (seaice &
220        seaice_dynmix) and lab_sea (primary test & noseaicedyn): moving/changing
221        code from seaice_growth.F & seaice_advdiff.F to new ridging routines
222        seaice_reg_ridge.F seaice_do_ridging.F affects AD gradient
223        (down to 8-7 matching digits for global_ocean and 5-6 for lab_sea).
224    o model/src: for atmosphere in p* coords:
225      - store factor rStarFacC**atm_kappa (= pStarFacK) in common block
226      - implement more accurate p* coordinate slope term (in calc_grad_phi_hyd.F),
227        but not yet activated.
228    o pkg/seaice: fix restart problem for ITD with new ice strength parameterisation:
229      - move computation of opnWtrFrac = 1-AREA to before computing ice strength
230      - this changes the results (but not for any verification experiment, because
231        none tests this), but avoids having an extra field in the restart files
232    o pkg/seaice: remove global variable TICE (not needed)
233      - replace by TICES or local variable where necessary (cost_seaice_test,
234        seaice_diagnostics_state)
235      - move copying TICE to TICES from seaice_check_pickup to seaice_read_pickup
236      - use specific read/write routines for reading and writing individual leves
237        of a multilevel field
238    o pkg/ctrl & model/inc:
239      - move additional anomaly fields of control vars (related to options:
240         ALLOW_KAPGM_CONTROL, ALLOW_KAPREDI_CONTROL and ALLOW_BOTTOMDRAG_CONTROL)
241        from DYNVARS.h into new header file: CTRL_FIELDS.h
242    o pkg/seaice: some small modifications to the ridging code
243      - make fw2ObyRidge a global variable and add the freshwater flux to
244        seaice_growth
245      - pass actual thickness from seaice_prepare_ridging, so that it is
246        computed only in one place and compute it in the same way as in
247        seaice_growth
248      - initialise more fields in seaice_do_ridging that where cause floating
249        point exceptions over land
250    o pkg/seaice: preparations for ridging code and first real ridging code
251      - move most of "PART 1" of S/R seaice_growth into a new and separate
252        S/R seaice_reg_ridge that will both regularize the state variable after
253        advection call the actual ridging routine;
254      - requires to make 5 fields global fields: d_HEFFbyNEG,d_HSNWbyNEG,
255        d_AREAbyRLX,d_HEFFbyRLX,saltFluxAdjust;
256      - remove ridging code from seaice_advdiff
257      - clean up remaining part 1 of seaice_growth in an attempt to make it
258        more readable (this is probably subjective)
259      - call seaice_itd_redist once in the initialisation phase to have the initial
260        conditions in the correct category
261      - finally: add new ridging routine for ITD code
262    
263    checkpoint64v (2014/04/11)
264    o pkg/ecco:
265      - add runtime parameters mdt[start,end]date[1,2]
266      - rename variable "tpmean" as "mdt" and "topexmeanfile" as "mdtdatfile"
267    o pkg/seaice:
268      - make deltaC a global variable, so that it can be used in ridging code
269      - first step towards ridging: introduce new routines that compute
270        ice strength based on ridging parameters
271      - add diagnostic for HSNOWITD
272      - add opnWtrFrac as a global variable (required for ridging scheme)
273    o pkg/salt_plume + pkg/seaice/seaice_growth.F
274      - add SALT_PLUME_IN_LEADS flag to activate pkg/salt_plume only when ice
275        AREA exceeds a threshold (code contributed by I.Fenty in 2011)
276    o verification/hs94.1x64x5:
277      - leave ALLOW_AUTODIFF_TAMC undefined in code_oad/AUTODIFF_OPTIONS.h
278      - do not use ECCO_CPPOPTIONS.h anymore for TAF & OpenAD Adjoint tests.
279    o autodiff:
280      - Start to include explicitly AUTODIFF_OPTIONS.h, COST_OPTIONS.h,
281        and CTRL_OPTIONS.h in src files (to enable to skip the ECCO_CPPOPTIONS.h)
282        For now, only in pkgs used in verification/hs94.1x64x5.
283      - Replace ALLOW_AUTODIFF_TAMC by ALLOW_AUTODIFF (except for tape/storage
284        which are specific to TAF/TAMC).
285      - Replace ALLOW_AUTODIFF_OPENAD by ALLOW_OPENAD:
286        since ALLOW_OPENAD is defined in PACKAGES_CONFIG.h (any time pkg/openad
287        is compiled), this simplifies/reduces which *_OPTIONS.h file to include.
288      - OpenAD: change Makefile to generate the appropriate AD_CONFIG.h when
289        building mitgcmuv_ad (make adAll).
290    o pkg/ecco:
291      - cost_gencost_seaicev4.F:
292         reformulate proxy cost as function of sst and local param SEAICE_freeze
293         change cost names from siv4-[sst,vol] to siv4-[deconc,exconc]
294      - add stop statement if old names siv4-[sst,vol] are used
295      - add snapshots + cost reports for atmospheric longwave
296      - remove factor 0.1 in front of wtau[u,v]
297      - replace never used flag ALLOW_TMI_COST_CONTRIBUTION with
298         ALLOW_TMI_SST_COST_CONTRIBUTION
299    o pkg/atm_phys:
300      - add some diagnostics for Short-wave and for convection S/R.
301    o pkg/seaice/seaice_growth:
302      - fix a bug in the lateral melt parameterization for SEAICE_ITD
303        in seaice_growth; tempFrz needs to be computed inside the i/j-loop
304      - rearrange loop order for better vector code in the same code block
305      - rewrite the floeDiameter formula to have fewer divisions
306      -  (miraculously) none of this changes the results of seaice_itd
307    o pkg/smooth:
308      - move param smooth2Ddiffnbt to pkg/ecco
309    o pkg/salt_plume:
310      - salt_plume_frac.F:
311         clean up local param names
312         reformulate (1-frac) to frac; original 1-frac was based on swfrac code
313    o pkg/rw:
314      - add RS version of S/R READ_MFLDS_LEV.
315    o pkg/streamice:
316      - fix the restart test by writing/reading pickup_streamice files.
317    o pkg/seaice:
318      - refine checks for jfnk-related parameters
319      - comment out if statement with SEAICEuseIMEX parameter as long as there
320        is no IMEX code to avoid confusion and surprises
321    
322    checkpoint64u (2014/03/07)
323    o verification/MLAdjust:
324      - rename secondary test suffix:
325         1.leith  -> A4FlxF  + switch to flux-form & add side-drag
326         0.leithD -> AhFlxF  + switch to flux-form
327         0.smag   -> AhVrDv  (use Vorticity-Div. visc form) + add side-drag
328         0.leith  -> AhStTn  (use Strain-Tension visc form) + add side-drag
329    o pkg/mom_vecinv:
330      - remove unused arguments from S/R MOM_VI_HDISSIP & MOM_HDISSIP (as it used
331        to be before mom_calc_visc.F)
332      - skip the call to MOM_CALC_TENSION & MOM_CALC_STRAIN if not needed.
333      - add 2nd copy of vort3 & strain that knows about lateral BC (free/no slip):
334        this is simpler for the adjoint and for diagnostics.
335    o model/src + pkg/momentum:
336      - add input files for  2-D additional Western and Southern cell-edge wall
337         (e.g., to add "thin-wall" where it is =1).
338      - fix sideDrag option for thin-walls with Non-Lin Free-Surf
339        using 2nd hFacZ that is computed from initial (fix domain) hFac
340      - known limitations of thin wall implementation: not yet coded for sigma
341        coords; not working with CD-scheme neither.
342    o pkg/seaice:
343      - rename recently introduced parameters from (wrong name) AB to
344        BDF (backward difference time discretisation)
345      - retire runtime parameters SEAICEuseAB2, SEAICE_abEps
346    o tools/adjoint_options:
347      - remove setting of "OPENAD=true" (now set by command line "genmake2 -oad")
348    
349    checkpoint64t (2014/02/01)
350    o pkg/ecco
351      - add compile flag ALLOW_GENCOST_TIMEVARY_WEIGHT in ECCO_OPTIONS.h and
352        runtime logical flag gencost_timevaryweight to read daily sea-ice sigma
353      - replace hard-coded record number and period which only work for monthly
354        with read-in runtime param that works for other periods (month,day,year)
355    o pkg/thsice
356      - corrected store directive fixes thsice adjoint gradient checks
357    o genmake2 & testreport:
358      - add genmake2 option "-oad" to generate a Makefile for OpenAD built and
359        in this case, use tools/adjoint_options/adjoint_oad as default AD optfile.
360        Update testreport accordingly. No need to set "export OPENAD=true"
361        in adjoint_options/adjoint_oad anymore (will be removed later).
362    o pkg/shelfice:
363      - put T & S shelfice forcing into model surfaceForcing_T,_S (for now,
364        only if SHELFICEboundaryLayer=F); Change model/src/external_forcing.F
365        so that surface forcing applies to k=kSurf if using pkg/shelfice.
366    o pkg/ctrl, pkg/grdchk, pkg/ecco:
367      - Changes to make GENARR more modular (i.e. invisible if not used)
368    o model/src/temp_integrate.F and salt_integrate.F
369      - re-include store directives that were removed on Dec 27th.
370    o model/src/external_forcing_surf.F
371      - add storage directives for EmPmR and PmEpR to avoid recomputation of
372        seaice_model in the adjoint that is problematic when seaice_model is
373        turned off in the adjoint. The resolved issue dated back to July when
374        EXTERNAL_FORCING_SURF call was moved.
375        Update global_ocean.cs32x15/*/output_adm.seaice_dynmix.txt accordingly.
376    o pkg/exf/exf_check.F
377      - fix a small bug again (originally found by Wentao Liu, now found again)
378      - streamline error output
379    o pkg/streamice and aim_v23:
380      - replace a few "_EXCH_XY_RL (" with "_EXCH_XY_RL(", so that
381        Apple's /usr/bin/cpp knows what to do:
382        Apple LLVM version 5.0 (clang-500.2.79) (based on LLVM 3.3svn)
383        Target: x86_64-apple-darwin13.0.0
384    
385    checkpoint64s (2014/01/05)
386    o tools/adjoint_options:
387      - switch to fastopt.net TAF server (instead of default fastopt.de) for
388        AD optfiles adjoint_diva & adjoint_f95 (similar to adjoint_default).
389    o model/src:
390      - remove some unnecessary TAF storage directives in forward_step.F and
391        in dynamics.F (note: not always removed by TAF, e.g., double storage
392        of kappaRU,kappaRV in former version of dynamics.F).
393    o model/src & pkg/ptracers:
394      - call directly GAD_IMPLICIT_R & IMPLDIFF + DWNSLP_APPLY from temp_integrate.F
395        salt_integrate.F and ptracers_integrate.F (instead of from thermodynamics.F)
396        and remove ptracers_dwnslp_apply.F & ptracers_implicit.F
397      - call MATRIX_STORE_TENDENCY_EXP for each tracer (in ptracers_integrate.F)
398      - add fZon & fMer as output argument of S/R GAD_CALC_RHS.
399      - update TAF AD-output of experiments global_ocean.90x40x15 (13 for AD-grad).
400    o useSingleCpuInput separates single-CPU input from single-CPU output;
401        for now only implemented for in exf_interp_read.F
402    o verification/advect_xy:
403      - fix missing EXCH call in local version of ini_salt.F and update output.
404    o momentum diagnostics:
405      - fix which deltaT is used in Total-Tendency diagnostics.
406      - fix typo in diagnostics for momentum tendency from AB.
407    o pkg/seaice/seaice_lsr.F: fix an initialisation bug for the
408        SEAICE_VECTORIZE_LSR_ZEBRA option that lead to NaNs on a NEC-SX8
409    
410    checkpoint64r (2013/12/08)
411    o verification/*/results:
412      - Update reference output of experiments that were passing with just 13 digits
413         (make it easier to detect future changes in results)
414    o model/src & pkg/ptracers:
415      - move calls to GAD_ADVECTION (Multi-Dim advection) from thermodynamics.F to
416        inside temp_integrate.F and salt_integrate.F and from ptracers_advection.F
417        to inside ptracers_integrate.F ; remove ptracers_advection.F
418    o coupling interface pkgs:
419        [atm_compon_interf, ocn_compon_interf & atm_ocn_coupler]
420      - change the config check to test the agreement of Ocean Depth
421        with ATM land/sea mask (instead of ATM orography);
422      - send to coupler the number of coupler time-steps to do for this run:
423        this allows to check for consistency and don't need anymore to be
424        specified in parameter file "data";
425      in coupler:
426      - check consistency of RunOff map versus Ocean Depth and ATM land/sea mask.
427      - improve report to log-file of config setting (pass log-file unit to few S/R)
428    o pkg/compon_communic:
429      - add coupling send/receive for non-tiled integer vector;
430      - add S/R to check and stop if any proc has an error (similar to
431        eesupp/src/stop_if_error.F but single thread and across Comm_World).
432    o pkg/exch2:
433      - in exch2*_get_rx[1,2]: use new list "W2_tileIndex" to replace search
434        through list of all tiles my proc owns.
435    o model/src:
436      - AUTODIFF only: in calc_adv_flow.F, recompute rTransKp (instead of copying
437        from rTrans) to simplify dependencies (no need to store rTrans anymore in
438        calling S/R); this affects AD results at machine truncation level:
439        update AD-output (TAF) of experiments: 1D_ocean_ice_column,
440        bottom_ctrl_5x5 & obcs_ctrl (12 digits for AD grad, same FWD grad).
441    o tools/build_options:
442      - simplify Warnings options (-ieee & -devel cases) in linux_amd64_gfortran
443    o coupling interface pkgs:
444        [compon_communic, atm_compon_interf & ocn_compon_interf]
445      - move declaration of local array "ibuf" out of header file "CPLR_SIG.h"
446        to each S/R that needs it; remove un-used variables.
447      - change component tile registration (cpl_register.F in both compon_interf
448        and mitcomponent_tile_register.F) to pass the full list of tiles
449        information (including bi,bj) in 1 vector (instead of in a bi,bj matrix).
450      - with pkg/exch2: adopt the same convention used for I/O to define mapping
451        towards coupler global array (unless W2_useE2ioLayOut=F):
452         a) can now use different tiling between atm & ocn comp.
453         b) no needs to modify the run-Off map when changing tiling (was needed
454            even if using the same tiling between atm & ocn).
455         c) will allow to run with blank-tiles in 1 component (e.g., for ocean
456            full land tiles); not yet tested.
457      - check for valid mapping from comp. tile to coupler global array
458      - improve report of tile registration results to log file.
459    o pkg/exch2:
460      - in eesupp/src/eeboot.F: move call to W2_EEBOOT before Coupler
461        tile-registration (CPL_REGISTER);
462      - activate (un-comment) definition and setting of "W2_tileIndex" list to
463        store the local bi,bj indices of each tile;
464      - also print bi,bj in local report to log file;
465      - fix pkg/debug/debug_cs_corner_uv.F for the case nSy > 1 (left from
466        Jun 2009 modif of pkg/exch2).
467    o testing on baudelaire:
468      - run 2 tests at a time: no significant slow down (since enough cpu) and
469        get the full set of test done earlier
470      - switch the ifort test to "-devel" ; run the OpenAD test everyday.
471    o model/src/thermodynamics.F and routines called from it:
472      - pkg/gmredi: gmredi_residual_flow.F (replacing gmredi_calc_uvflow.F &
473        gmredi_calc_wflow.F) to update eulerian velocity (input) into residual
474        velocity (outp) by adding bolus velocity.
475      - model/src: calc_adv_flow.F (replacing calc_common_factors.F) to compute
476        mass transport from velocity + lateral grid cell area
477      - rename calc_gt.F to temp_integrate.F (includes call to TIMESTEP_TRACER)
478      - rename calc_gs.F to salt_integrate.F (includes call to TIMESTEP_TRACER)
479     in thermodynamics.F
480      - remove k from thermodynamics.F and move it to temp_integrate.F
481        salt_integrate.F and ptracers_integrate.F (now done inside the tracer
482        loop).
483      - compute locally (in thermodynamics.F) 3-D velocity field that is used to
484        advect tracers; pass it as argument to GAD_ADVECTION, GAD_SOM_ADVECT,
485        PTRACERS_ADVECTION, TEMP_INTEGRATE, SALT_INTEGRATE, PTRACERS_INTEGRATE,
486        GAD_IMPLICIT_R and PTRACERS_IMPLICIT
487      - update AD-output (TAF & OAD) of experiments: 1D_ocean_ice_column,
488        global_ocean.90x40x15, tutorial_global_oce_biogeo and
489        tutorial_tracer_adjsens (+ TLM output).
490    o tools/OAD_support and (verification/*/) code_oad:
491      - OAD_support/cb2mGetModules.csh: add PACKAGES_CONFIG.h in header file to
492        module conversion ; remove unneeded CPP_EEOPTIONS.h.
493      - code_oad/CPP_OPTIONS.h: remove PACKAGES_CONFIG.h and use a more standard
494        version (closer to model/inc/CPP_OPTIONS.h).
495    o model/src:
496      - remove parameter "useOldFreezing" from PARAMS.h and push it to the
497        retired list of parameters (routine FREEZE has been replace by surface
498        freezing (10.yrs ago) and by pkg/frazil (interior freezing).
499    o pkg/gmredi:
500      - add option (GM_CALC_TRANSP_FROM_VEL) to compute transport directly from
501        velocity (same scheme but affects machine truncation) for GM_AdvForm.
502      - update output of FWD experiments: front_relax.bvp,
503        global_ocean.90x40x15.dwnslp, global_ocean.cs32x15 and ideal_2D_oce.
504    
505    checkpoint64q (2013/11/17)
506    o verification:
507      - generate new output on baudelaire (gfortran, -ieee) for OpenAD experiments
508        tutorial_global_oce_biogeo and global_ocean.90x40x15.
509      - generate new output (growth & melt) for seaice_itd experiment after
510        updating the input pickup_seaice files (previously wrong).
511    o pkg/cost:
512      - define a "final cost function" for each tile, and use GLOBAL_SUM_TILE_RL
513        (instead of _GLOBAL_SUM_RL) to get the final cost from all procs & threads:
514        o this fixes global-sum value if multi-threads (since GLOBAL_SUM_RL
515          cannot be applied to var in common block).
516        o allows to get results independent of tile-per-proc setting (if using
517          slower GLOBAL_SUM_SEND_RECV option).
518      - update accordingly: seaice_cost_final.F, shelfice_cost_final.F,
519        thsice_cost_final.F and ecco_cost_final.F (this one affects lab_sea
520        forward gradients: update output).
521      - update */code_oad/externalDummies.F by adding dummy GLOBAL_SUM_TILE_RL
522        S/R and, for most exp., also comment out GLOBAL_SUM_R8.
523    o pkg/mom_common:
524      - move to pkg/mom_common and model/src (previously in tutorial_deep_convection
525        code) 2nd version of isotropic 3-D Smagorinsky code interface: strain and
526        viscosity are locally declared in dynmics.F and pass as argument to CALC_GW;
527        ensure that all field value that are used are set.
528    o tutorial_deep_convection (smag3d):
529      - add missing scaling in mom_calc_smag_3d.F;
530      - set smag3D_coeff in input.smag3d such that results do not change.
531    o pkg/dic:
532      - change dic_cost.F to compute cost on each tile first and then apply
533        GLOBAL_SUM_TILE_RL: this affects forward gradient of AD experiments
534        tutorial_dic_adjoffline & tutorial_global_oce_biogeo; update output.
535      - remove kLev argument and use GLOBAL_SUM_TILE_RL in tracer_meanarea.
536    o eesupp/src & pkg/mdsio:
537      - remove gather/scatter_vector.F (from eesupp) and mdsio_read/writevector.F
538        (from pkg/mdsio) since they are no longer used for tape IO.
539      - move simple C subroutine "setdir.c" from pkg/compon_communic to eesupp/src
540        (+ keep a copy in pkg/atm_ocn_coupler).
541    o verification/isomip:
542      - split domain in 8 squared tiles (instead of just 2) for FWD, AD & OAD tests.
543    o tools/build_options:
544      - optfile linux_amd64_ifort11, fast (no ieee) case:
545        to get a working restart for all experiments, add "-fp-model source"
546        to FOPTIM (also remove "-opt-streaming-stores auto" <- this is the default).
547    
548    checkpoint64p (2013/10/20)
549    o pkg/autodiff:
550      - adread_adwrite.F: when type and length do not match ALLOW_AUTODIFF_WHTAPEIO
551        criteria, return to simple (default) tape IO format.
552    o pkg/mdsio (+ eesupp/src):
553      - rewrite/simplify tape-IO S/R (new S/R MDS_READ/WRITE_TAPE replace
554        previous MDSREAD/WRITEVECTOR) with 2 array argument from each type (R4/R8);
555      - fix globalFile and singleCpuIO options using simpler global mapping.
556      - new pairs of scatter/gather vector S/R (one for each type, generated from
557        template) corresponding to simpler global mapping.
558      - adread_write.F: switch to new S/R (but leave old calls commented) and write
559        to globalFile when parameter globalFiles is set to True.
560      - switch on useSingleCpuIO in AD experiments: global_ocean.90x40x15 & isomip.
561    o pkg/autodiff:
562      - adread_adwrite.F: add a hack for RS arrays (when RS=real*4);
563        with ALLOW_AUTODIFF_WHTAPEIO defined, since corresponding (real*4) is
564        missing, just add a STOP if array type do not match.
565    o pkg/exf:
566      - to allow to use seaice-fraction from pkg/exf in other pkgs than pkg/seaice:
567         rename CPP option EXF_ALLOW_SEAICE_RELAX to EXF_SEAICE_FRACTION
568         and rename array obsSIce to exf_iceFraction.
569    o tutorial_deep_convection:
570      - add 1rst version of isotropic 3-D Smagorinsky code (from Louis-Philippe),
571        for now all in this exp. code dir.
572      - add secondary test using Smag-3D viscosity (keep very low backgroud visc for
573        testing) and flux-limter advection scheme for Temp. (no explicit diffusion).
574    o eesupp/src:
575      - added SINGLE_DISK_IO option because reading of parameter files on
576        very large number of processors did not work with existing set-up
577    
578    checkpoint64o (2013/09/25)
579    o pkg/atm_phys & atm_compon_interf:
580      - allows for coupling of gray-atmosphere (atm_phys) with ocean.
581    o tools/build_options:
582      - switch from "-fPIC" to "-mcmodel=medium" in optfiles: linux_amd64_gfortran
583        & linux_amd64_ifort11 and in linux_amd64_g77 & linux_amd64_open64 also
584        remove CPP setting (was identical to genmake2 default).
585    o pkg/gmredi & model/src: Some updating and work done on the residual model.
586      - created new file model/src/calc_eddy_stress.F to calculate the eddy stress.
587      - fixed up the calculation of the eddy stress and how it is added to the
588        external forcing via taueddy_external_forcing.F
589      - at the moment, it is very experimental and only works with the variable eddy
590        diffusivity calculated in gmredi_k3d.F
591    o pkg/seaice/seaice_check.F: add a check to catch the case of specifying
592        lw/swfluxfile instead of lw/swdownfile in data.exf together with pkg/seaice
593    o testreport (& tools/do_tst_2+2):
594      - for MPI test, set default COMMAND to 'mpirun -v -np TR_NPROC ./{executable}'
595    o tools/build_options: linux_amd64_gfortran & linux_amd64_ifort11:
596      - remove CPP='cpp -traditional -P' (this is genmake2 default)
597      - add switch (for big setups) to use 'medium' memory-model (but leave it
598        commented out for now). Note: needed with FC 19 to compile big setups.
599    o pkg/atm_compon_interf:
600      - regroup per field origin (model & pkgs) the coupling storage routines
601         (which accumalate in time each coupling field)
602      - move bi,bj loops inside atm_store_my_data.F and store also wind-stress;
603        update accordingly + simplify aim_do_physics.F
604    
605    checkpoint64n (2013/08/26)
606    o pkg/bbl:
607      - update formulation to reduce dispersion of tracer properties in bbl
608      - replaced horizontal and vertical transport parameters with velocities
609      - changes results for verification/global_with_exf.yearly
610    o verification/halfpipe_streamice:
611      - change to matrix construction; update both Fwd & AD output.
612    o verification/tutorial_tracer_adjsens:
613      - OpenAD test: switch to vector-invariant momentum since fluxform with
614        rStar causes problems with OpenAD; update output.
615    o tools:
616      - genmake2: define a common prefix for all temp-file names ; move them
617        to local /tmp disk (but would be easy to move them back);
618      - xmakedepend: apply the same switch for temp-files.
619    o pkg/offline:
620      - changes for use with rStar (NLFS): assume that we continue to provide
621        UVELMASS/hFacW_ini & VVELMASS/hFacS_ini (hFacWi,S_ini as written in grid
622        output files) and apply r* scaling at each time-step (function of the time
623        varying Eta field); use normal pickup files (needed for restart with NLFS).
624    o adjoint with OpenAD:
625      - move OpenAD-specific files from verification/OpenAD/code_oad_all to a new
626        package openad.  This package has to be compiled for all runs with OpenAD
627        instead of specifying code_oad_all as a modification directory.
628      - link the fortran templates from tools/OAD_support to the build directory
629        for preprocessing to avoid conflicts between different setups compiled
630        simultaneously and simplify cleanup.
631    o pkg/exf:
632      - in exf_getforcing.F: comment out most of the EXCH calls (fields used by
633        main model or other pkgs are exchanged in EXF_MAPFIELDS).
634    o model/src:
635      - do_stagger_fields_exchanges.F: skip EXCH calls when using pkg/offline
636        (similar to do_fields_blocking_exchanges.F).
637    o tools/genmake2:
638      - remove TAF output src code just before calling staf (when not doing a fresh
639        built, will stop if things go wrong with staf).
640      - fix target "adobj" (left from TAF version-2 transition)
641    o pkg/diagnostics:
642      - add a parameter to track the status of pkg/diagnostics activation;
643        this replace/extend the use of logical param "settingDiags" (to check
644        when adding diag to the list) to also check any DIAGNOSTICS_[]FILL* call.
645        New S/R to print error message and stop when pkgStatus is not right.
646      - to try: add a warning when "data.diagnostics" exist but useDiagnostics=F.
647    
648    checkpoint64m (2013/08/13)
649    o model/inc:
650      - move FCORI_MACROS.h from PARAMS(_MACROS).h to GRID_MACROS.h (left from
651        8 yrs ago modif when Coriolis arrays were moved from PARAMS.h to GRID.h)
652    o pkg/kpp & aim_v23:
653      - only call DIAGNOSTICS_FILL when useDiagnostics=TRUE.
654    o pkg/seaice:
655      - restore (last time on 2011/12/24) ability to compile pkg/seaice with
656        undefined pkg/exf ALLOW_ATM_TEMP or ALLOW_RUNOFF CPP-options.
657      - only call DIAGNOSTICS_FILL when useDiagnostics=TRUE.
658    o eesupp/src:
659      - fix check for overlap-size argument (myOLn.GT.MAX_OLY_EXCH)
660        in exch1_rx[_ad].template (thanks to Francois Lefeuvre report).
661    o switch to TAF version-2:
662      - add flow directives to "freeze" naming convention for ad-routines that
663        are used in I/O routines of adjoint state and associated common blocks
664        that are used in adcommon.h (backward compatible with version-1)
665      - update all ad-optfiles (in tools/adjoint_options + few local to some
666        verification exp) to switch to latest TAF version (currently 2.5.5);
667        merge "*_mpi" adoptfiles into the corresponding non-mpi (but commented
668        out except for diva).
669      - the major change with TAF version-2 is that both the differentiated
670        routines and the forward routines (new) are returned as part of the TAF
671        output source code. Update genmake2 accordingly.
672      - new output for AD experiment tutorial_global_oce_biogeo (better AD gradient
673        with version-2 when compared to TLM or FWD gradient); other experiments
674        output show minor changes (machine truncation level); update the few AD &
675        TLM output with 12 matching digits only (some prior to version-2 switch).
676    
677    checkpoint64l (2013/08/05)
678    o model/src:
679      - in dynamics.F, skip the call to CALC_VISCOSITY if momViscosity=F
680      - main_do_loop.F: no longer includes additional (AUTODIFF) header files
681        when using TAF but only if using OpenAD.
682    o pkg/mom_common+fluxform+vecinv:
683      - always set horiz. viscosity arrays to background value before calling
684        MOM_CALC_VISC (in MOM_FLUXFORM & MOM_VECINV) and call S/R MOM_CALC_VISC
685        only when using variable horiz. viscosity (useVariableVisc=T);
686      - simplify mom_vecinv.F (only 1 block for momViscosity).
687    o pkg/mom_common: variable horiz. viscosity in NH code
688      - move horiz-viscosity 3-D arrays viscAh_W & viscA4_W (used in calc_gw.F)
689        from model/inc/NH_VARS.h to pkg/mom_common/MOM_VISC.h
690      - store in common block (in MOM_VISC.h) logical parameters: useHarmonicVisc,
691        useBiharmonicVisc & useVariableVisc.
692      - fix old bug (already in 1rst implementation of variable horizontal viscosity
693        in calc_gw.F, version 1.27, 2006/06/20):
694        horizontal bi-harmonic viscosity in gW was missing when wiscA4W=0
695        even if variable bi-harmonic viscosity (e.g., viscA4Grid) was non-zero.
696      - change background horiz viscosity in vertical momentum (gW) to always be
697        viscAhW,viscA4W (instead of switching to viscAhD, viscA4D when using
698        any type of variable viscosity, e.g., viscAh/4Grid)
699      - change default value of viscAhW,viscA4W to viscAhD,viscA4D (instead of
700        viscAh,viscA4) which default to viscAh,viscA4 :  this avoid missing
701        horiz. viscosity in W eq when just setting viscAhD/Z,viscA4D/Z (since
702        default viscAh,viscA4 is zero).
703    o model/src:
704      - extend length of drC & recip_drC from Nr to Nr+1.
705    o Divided Adjoint (DIVA) with MPI:
706      - genmake2: do not create local ./mpi_headers dir when no file to copy into.
707      - remove option ALLOW_DIVIDED_ADJOINT_MPI (replaced by ALLOW_DIVIDED_ADJOINT
708        and ALLOW_USE_MPI) from model/src code and from ECCO_CPPOPTIONS.h.
709    
710    checkpoint64k (2013/07/23)
711    o tools/OAD_support:
712      - avoid the need for file "oadtempflile" in insertTemplateDir.bash
713        and remove it from genmake2.
714    o tools/build_options:
715      - remove MPI_HEADER_FILES_INC setting (no longer used) and comment out
716        MPI_HEADER_FILES list (let genmake2 find the missing headers)
717    o verification/halfpipe_streamice:
718      - change to driving stress formulation; update both Fwd & AD output.
719    o tools/genmake2 and Divided Adjoint with MPI:
720      - remove default setting of MPIINCLUDEDIR from $MPIHOME (always been broken);
721      - only create local ./mpi_headers dir if using MPI and MPIINCLUDEDIR is set;
722      - add new variable (LOCAL_MPI_HEADERS, replace MPI_HEADER_FILES_INC) in
723        Makefile, which is set by genmake2, and check which mpi-headers are needed.
724        Note: need to update adjoint_options/adjoint_diva_mpi accordingly.
725      - update target "CLEAN" (to also remove ./mpi_headers/ dir).
726    o testreport:
727      - changes for Divided Adjoint Run: when file "run_ADM_DIVA" is present,
728        perform additional runs (number of additional runs is "add_DIVA_runs" taken
729        from file run_ADM_DIVA ; should match "nchklev_3" in file "code_ad/tamc.h").
730    o verification/lab_sea (AD test):
731      - change to test Divided Adjoint Run in this set-up (both standard AD test
732        and 2 secondary AD test: noseaice + noseaicedyn); drop the evp AD test.
733    o pkg atm_ & ocn_compon_interf:
734      - remove cpl_earlyExpImpCall=F option (was mainly a hack added for the old
735        staggerTimeStep implementation) and disable (retired) corresponding
736        parameter.
737    o pkg/offline:
738      - comment out unused field-array: ICEM, ConvectCount, hflx[01], icem[01];
739      - add S/R OFFLINE_CHECK to print offline parameter summary
740        and stop if loading a file that is not used;
741      - enable to calculate GMRedi tensor, KPP mixing and convective index
742        when the corresponding file(s) is/are not specified (but pkg is used).
743      - comment out resetting of monitorFreq (to endTime) since it still useful
744        for monitoring CFL numbers and checking offline fields.
745    o OpenAD:
746      - do not define OAD_DEBUG (in tools/adjoint_options/adjoint_oad) to get
747        smaller standard output) and generate new (smaller) output (on baudelaire
748        using gfortran with -ieee) for exp. tutorial_tracer_adjsens
749    o model/src:
750      - call EXTERNAL_FORCING_SURF outside bi,bj loops (in do_oceanic_phys.F),
751        (where external_forcing_adjust was called) and change list of arguments;
752      - merge external_forcing_adjust.F into external_forcing_surf.F
753      - put surface relaxation of SST & SSS in new S/R (forcing_surf_relax.F)
754        which also contains balancing surface relaxation (ALLOW_BALANCE_RELAX,
755        previously in file "balance_relax.F", now removed); remove corresponding
756        arrays in FFIELDS.h.
757      - EXTERNAL_FORCING_SURF is now called when using pkg/offline; implement
758        a hack for getting back surfaceForcingS (loaded from file) when using
759        ALLOW_OLD_VIRTUALFLUX (pkg/dic, in DIC_OPTIONS.h) in offline set-up.
760      - update output of AD test experiment global_ocean.cs32x15.seaice_dynmix
761        (was getting only 11 digits for AD-grad, due to different truncation
762         error in AD code).
763    
764    checkpoint64j (2013/07/04)
765    o pkg/offline:
766      - to enable the use of other features with pkg offline (e.g., obcs),
767        also call S/R DO_OCEANIC_PHYS in offline run - more modifs to come.
768      - comment out "allowFreezing" (now active) in 2 offline testing exp.
769    o pkg/exf ALLOW_RUNOFTEMP
770      - fix sign and make compatible with temp_EvPrRn .NE. UNSET_RL
771      - ahdded RUNOFTEMP test to verification/global_ocean.cs32x15/input.seaice
772      - changes verification/global_ocean.cs32x15/results/output.seaice.txt
773    o pkg/atm_phys:
774      - allows to add some damping on uVel,vVel (strength only function of k).
775    o verification, ad-tests:
776      - reduce length of the simulation for AD test: global_ocean.cs32x15.seaice,
777        global_ocean_ebm and offline_exf_seaice.thsice.
778    o verification/halfpipe_streamice:
779      - found a bug in s/r pkg/streamice/streamice_advect_thickness which caused
780        flux input boundary conditions to be ignored; a fix for this bug changed
781        verification results for forward test.
782      - add adjoint test.
783    o pkg/ptracers:
784      - allow to restart without SOM pickup (resetting SOM to zero).
785    o pkg/gmredi:
786      - New parameterisation for the calculation of K and (GM_PsiX,GM_PsiY) added.
787      - It uses mixing length theory and suppression by steering level effects to
788        calculate a diffusivity used in the Redi tensor (see Bates et al., submitted
789        to JPO, for more details).
790      - It also uses the diffusivity to calculate an eddy induced streamfunction
791        based on a PV closure (rather than a buoyancy closure as in GM).
792      - New files added to pkg/gmredi:
793        gmredi_k3d.F calculates the diffusivity for the Redi tensor and the eddy
794          induced overturning streamfunction (called from gmredi_calc_tensor)
795        gmredi_calc_eigs.F calculates the eigenvalues and eigenvectors required
796          for use in gmredi_k3d
797        gmredi_calc_urms.F calculates the the rms eddy velocity used to calculate
798          the eddy diffusivity
799    
800    checkpoint64i (2013/06/18)
801    o pkg/cheapaml:
802      - take src files from MITgcm_contrib/verification_other/offline_cheapaml/code
803        that enable the use of seaice (pkg/thsice thermo & pkg/seaice dynamics)
804        with pkg/cheapaml.
805    o utils/python: add subpackage for cubed sphere function, first example is
806        simple cs.pcol to plot 2D fields on a map
807    o pkg/streamice:
808      - This is a new package in MITgcm, which solves dynamic equations for ice
809         sheets and ice streams
810      - At the moment it is independent of atmosphere/ocean dynamics, or any
811        other physical packages in MITgcm, even ShelfIce (although it is anticipat-
812        ed that this will change)
813      - There is a new verification exercise that tests it, halfpipe_streamice,
814        evolves a 40x80 km ice stream/ice shelf (at coarse resolution) in a
815        rectangular embayment
816      - halfpipe_streamice is forward-only for now, will have TAF test soon
817      - for questions, email dgoldber@mit.edu
818    o pkg/thsice:
819      - fix filling of snow-precip diagnostic (SIsnwPrc) (left from the removing
820        of snowPrc from common bloc, on May 2nd, thsice_step_fwd.F revision 1.40);
821      - remove diagnostics 'SI_FrcFx' ( now identical to 'SI_Fract' with new
822         call sequence: ice-Thermo(thsice),ice-Dyn,ice-Advect );
823      - allow precip from pkg/cheapaml to make snow over seaice.
824    o pkg/cfc:
825      - move in separated header file (CFC_ATMOS.h) time-serie arrays of Atmos CFC
826      - remove atmos CFC 2-D arrays from common bloc (now local variables)
827      - change some hard-coded constant to run time parameter for reading and
828        and interpolating atmospheric CFC ; keep same default as previously.
829      - more flexible reading of Atmos CFC (number of records no longer hard-coded)
830      - put arguments in standard order: myTime, myIter, myThid
831      - use standard S/R GET_PERIODIC_INTERVAL for time interpolation of
832        atmospheric CFC ; fix for the case myIter < PTRACERS_iter0.
833      - fix calculation of surf tendencys for partial-cell and/or Non-Lin Free-Surf
834      - new routine to print summary of CFC params and check for consistency.
835    o pkg/seaice: add uice/vice to the parameter list of s/r seaice_advdiff,
836      similar to thsice_advdiff.
837      Note that for the B-grid case the routine parameters uc/vc are overwritten.
838    o pkg/cfc:
839      - change time interpolation for atmospheric CFC-11 (now same as for CFC-12);
840        update output (CFC-11) of experiment cfc_example and tutorial_cfc_offline.
841      - fix interpolation of atmphspheric CFC between Sorthern and Northern
842        hemisphere value.
843    o pkg/seaice:
844      - allow to use seaice dynamics without pkg/exf (e.g., using pkg/cheapaml)
845    o pkg/seaice: add Adams-Bashforth2 time discretization for ice dynamics;
846                  so far only for JFNK-solver, turn on with SEAICEuseAB2 = .TRUE.
847      - requires an additional time level that is stored in the pickup
848      - you can start with AB2 from a pickup without this time level with
849        pickupStrictlyMatch = .false.
850    
851    checkpoint64h (2013/05/26)
852    o pkg/cheapaml:
853      - replace one ()**.5 with SQRT + use temp var "cdu = tau/Du" (coare3_flux);
854        affect machine truncation (but exp cheapAML_box still pass with 13 digits).
855      - consistent treatment of uWind,vWind location: assume everywhere in
856        pkg/cheapaml that they are on C-grid (@ uVel,vVel location)
857        (Note: was already the case for Tair,Qair advection);
858        add option (INCONSISTENT_WIND_LOCATION) to recover old results.
859      - compute diabatic forcing only in the interior (excluding overlap regions)
860      - fill in array "Qsw" (for short-wave heating);
861      - add diagnostic for precip ; fill-in diagnostics for cheapAML state vars
862        before any update (consistent with MITgcm state var diagnostics);
863      - cheapaml_fields_load.F & cheapaml_init_varia.F : only fill outer edges if
864        non periodic ; + adjusted for uWind,vWind (C-grid).
865    o pkg/seaice:
866      - remove dependence of pkg/seaice versus pkg/exf (file: pkg/pkg_depend) and
867        add explicitly pkg/exf in experiments that currently use pkg/seaice.
868      - allows to compile pkg/seaice without pkg/exf.
869    o tools/OAD_support:
870      - use a local copy (ourRWCPinBd) to ensure index ourRWCP stays within bounds
871        of array "ourStepOf" in function rvNextAction (revolve.F90).
872    o pkg/aim_compon_interf renamed to pkg/atm_compon_interf
873      - change pkg name (to be used with other atmospheric physics pkg)
874        but by-pass CVS when making the new pkg so that we keep the CVS history.
875    o pkg/offline:
876      - call OFFLINE_FIELDS_LOAD from pkg/offline/offline_init_varia.F
877        (previously called from pkg/dic_surfforcing_init.F)
878    o model/src:
879      - re-order sequence of calls within packages_init_variables.F, using
880        standard order, except for:
881         DIAGNOSTICS_INIT_VARIA and OFFLINE_INIT_VARIA (called @ the top),
882         CTRL_MAP_INI and OBCS_INIT_VARIABLES (called @ the bottom)
883    o new pkg: atm_phys
884      - add entry point and source code (previously in contrib
885          verification_other/atm_gray/code_gray/) for new pkg "atm_phys"
886        (atmospheric physics pkg from P. O'Gorman and T. Schneider, JCl, 2008).
887      - re-order sequence of calls within packages_readparms.F,
888         packages_init_fixed.F and packages_write_pickup.F
889        (but skip packages_init_variables.F because of TAF issues).
890      - update contrib/*/atm_gray/ experiment.
891    o pkg/seaice (ITD code):
892      - simplify and fix the writing of pickup-files for ITD case
893    o pkg/seaice (ITD code):
894      - introduce floe size dependent lateral melt for ITD case;
895      - cleaning (avoid division by zero, change to f77 syntax, remove tabs)
896      - update seaice_itd experiment main output.
897    o pkg/thsice:
898      - remove snowPrc from common block THSICE_FLUX, in THSICE_VARS.h and
899        declared it locally (without bi,bj) in thsice_main.F & aim_do_physics.F;
900        changed accordingly pkg/atm2d.
901    
902    checkpoint64g (2013/05/01)
903    o pkg/exf ALLOW_RUNOFTEMP
904      - if defined,  river and glacier runoff temperature can be read-in from
905        runoftempfile; runoftempfile needs to have same format as runofffile
906    o pkg/thsice (& pkg/bulk_force):
907      - In case Energy-Reference-Level (ERL) is used (temp_EvPrRn=0), account
908        for energy content of Precip + RunOff & Evap (like with pkg/exf).
909      - change computation domain to always be the interior (without overlap).
910      - fix bug (wrong overlap) when using EXF and stressReduction > 0.
911    o verification/tutorial_global_oce_biogeo:
912      - add preliminary OpenAD setup (still has problems)
913    o pkg/seaice:
914      - turn some parameters for choosing the convergence criterion of
915        the inexact Newton method (JFNK) into runtime parameters for convenience
916      - clean up seaice_calc_viscosities.F: remove/retire two options for
917        SEAICetaZmethod (1,2), introduce area weighting for method 3; this changes
918        the results of lab_sea/input because a division has been replaced by
919        a multiplication with the reciprocal (sumNorm)
920      - modify offline_exf_seaice/input.dyn_jfnk/data.seaice to improve
921        convergence of solver (changes results, of course), and to test some
922        new features
923    o model/src:
924      - remove unused (since Aug 2006) S/R SET_WRITE_GLOBAL_PICKUP and its call.
925      - remove unused forcing field "dQdT" and associated parameter "dQdTFile".
926      - move forcing adjustment (balancing surface forcing) in specific S/R
927        where might also be applied exchanges (if needed) to forcing arrays.
928    o pkg/shelfice:
929      - allow to specify the Ice-Shelf mass per unit area (instead of
930        shelficeLoadAnomaly) and do the conversion from one to the other
931      - move loading from file of shelficeLoadAnomaly from SHELFICE_INIT_VARIA
932        to SHELFICE_INIT_FIXED: (a) avoid some TAF recompution issues and
933        (b) will be loaded in time (before calling INI_PRESSURE) in case it is
934        needed in phi0surf for initial pressure calculation when useDynP_inEos_Zc
935      - update isomip experiment forward output (get machine truncation error
936        from conversion shelficeLoadAnomaly -> shelficeMass -> shelficeLoadAnomaly)
937    o verification/offline_exf_seaice:
938      revise data.seaice in input.thermo and input_ad and update results accordingly
939        HO = 0.2, SEAICE_areaLossFormula = 2,
940        SEAICE_growMeltByConv = .TRUE.,
941        SEAICE_doOpenWaterMelt = .TRUE.,
942      Improve consistency with input.thsice and fix the spurious 500m ice corners
943    o verification/global_ocean.cs32x15:
944      - set Energy Reference Level to liq. water @ 0 degC: temp_EvPrRn=0.,
945        in icedyn (thsice+seaice-dyn) test and update output.
946    o verification/offline_exf_seaice:
947      - adjust list of tested variables (with testreport) and update
948        standard test output with better slection of monitored fields.
949    o pkg/cd_code:
950      - swtich off Adams-Bashforth on the 1rst iteration. Update output of
951        experiment lab_sea.hb87
952    o tools/genmake2:
953      - change default makedepend from the system default to tools/xmakedepend:
954        When no makedepend is specified, select tools/xmakedepend it the test pass,
955        otherwise select the system default (if exist and pass the test) or
956        try to build cyrus-makedepend ; stop if none of the 3 works.
957    o pkg/exf & pkg/thsice:
958      - In case Energy-Reference-Level (ERL) is used (temp_EvPrRn=0), account
959        for energy content of Precip + RunOff & Evap. Assumes:
960       1) Rain has same temp as Air.
961       2) Snow has no heat capacity (consistent with seaice & thsice pkgs)
962       3) Run-Off comes at the temp of surface water (with same Cp)
963       4) Evap over ocean is released to the Atmos @ surf-temp (=SST); should be
964        put directly into Latent Heat flux & should use water-vapor heat capacity.
965       5) Evap over snow/seaice (pkg/thsice) assumes constant Lf+Lv (consistent
966        with snow having no Cp) => water vapor is released to Atmos @ 0^oC (=ERL).
967    o pkg/seaice: simplify the use of CPP flags in JFNK-related files
968        (compile when SEAICE_ALLOW_JFNK is defined)
969    o pkg/thsice:
970      - fix oceanic flux diagnostics & timeave (left from new sequence of calls
971        implementation): move THSICE_AVE call after the advection (called directly
972        from thsice_do_advect.F).
973    o verification/global_ocean.90x40x15 and OpenAD:
974      New experiment for OpenAD is identical to the one in input_ad except that
975        multiDimAdvection=.FALSE.,
976      There is still an issue with this.
977    o pkg/thsice:
978      - account for ice velocity (ocean relative velocity) in turbulent heat flux
979        at the base of the ice; update output of global_ocean.cs32x15 (icedyn)
980        and offline_exf_seaice (main test).
981    
982    checkpoint64f (2013/03/31)
983    o verification/OpenAD:
984      - new (smaller, without OAD_DEBUG) output_oadm.txt generated using gfortran.
985    o verification/isomip, pkg/shelfice and OpenAD:
986      - add OpenAD setup to this exp and make shelfice package work with OpenAD
987    o verification/tutorial_global_oce_biogeo:
988      - update AD and TLM output after turning off ALLOW_FE (in DIC_OPTIONS.h)
989    o verification/offline_exf_seaice:
990      - replace adjoint experiment (now similar to fwd input.thermo/ setup).
991    o verification/tutorial_tracer_adjsens, pkg/ptracers and OpenAD:
992      - add OpenAD setup to this exp and make ptracers package work with OpenAD
993    o pkg/seaice/seaice_evp.F:
994       mask the asymmetric contribution of the ice-ocean stress (when
995       the turningAngle is non-zero) over open water to avoid stripes
996       in the EVP-solutions after many EVP-substeps. This does not change
997       the verification experiment (because turningAngle=0 in that experiment),
998       but will affect other EVP solutions with turningAngle.ne.0
999    o verification, AD & TLM output:
1000      - new TAF version 2.3.10 (previously 2.3.8) add more parenthesis in multiple
1001        additions and multiplications which affect results at machine truncation
1002        level. Update few AD output (1D_ocean_ice_column, bottom_ctrl_5x5,
1003        lab_sea.noseaicedyn & offline_exf_seaice) and TLM output
1004        (1D_ocean_ice_column & tutorial_tracer_adjsens.som81) which had only 12
1005        digits of matching.
1006    o pkg/seaice:
1007       modify lsr-algorithm so that it vectorizes AND converges by using a
1008       "zebra" method: split vector loop into two with step size 2; this
1009       solves a general convergence problem for the JFNK solver on a vector
1010       computer. It has the potential to even improve convergence for
1011       non-vector machines, but it does change the results so it is turned
1012       off by default. To turn on define CPP-flags SEAICE_VECTORIZE_LSR and
1013       SEAICE_VECTORIZE_LSR_ZEBRA in SEAICE_OPTIONS.h
1014    
1015    checkpoint64e (2013/03/05)
1016    o pkg/ecco and several verification experiments:
1017       Remove special versions of the_model_main.F, the_main_loop.F, forward_step.F
1018       from ecco package, and revert to unified routine in model/src/
1019       Adjust verification experiments accordingly, especially gloal_oce_llc90
1020       Should conclude long-standing work by Gael to reconsile the_main_loop with
1021       ECCO and will enable OpenAD's revolve loop in ECCO setup.
1022    o pkg/generic_advdiff:
1023      - implement compressible flow method for multi-dim advection (similar to
1024        gad_som_advect.F); add new option "GAD_MULTIDIM_COMPRESSIBLE" (since
1025        TAF generates many recomputations) to use it; no yet coded with implicit
1026        vertical advection.
1027      - change experiment advect_cs (new output) and advect_xy (same output)
1028        to test compressible flow multi-dim advection.
1029    o pkg/generic_advdiff:
1030      - fix SOM advection for unusual cases (linear Free-Surf in r*, other
1031        cases where linear Free-Surf is not @ k=1, e.g., useShelfIce)
1032    o pkg/seaice:
1033      - fix bug in the no-slip implementation in seaice_calc_strainrates.F, this
1034        bug affects two verification experiments (lab_sea and lab_sea.hb87),
1035        recover old (wrong) results by setting noSlipFac = 2. in
1036        seaice_calc_strainrates.F;
1037      - add another averaging method for etaZ (etaZmethod=3), a mix of 2 and 0
1038      - add runtime parameter SEAICE_JFNKepsilon for that finite difference
1039        gradient in the Jacobian times vector operation (s/r seaice_jacvec)
1040      - fix line search in seaice_jfnk.F (s/r seaice_jfnk_update)
1041    o pkg/seaice: reorganize seaice_lsr.F to be able to reuse more code:
1042      - new subroutines seaice_lsr_tridiagu/v
1043      - introduce loop bounds i/jmin/max to be able to use a restricted
1044        additive Schwarz method, but not used for now.
1045      - rename SEAICE_CALC_LSR_COEFFS into SEAICE_LSR_CALC_COEFFS
1046      - use new subroutines seaice_lsr_tridiagu/v in s/r seaice_preconditioner
1047    o OpenAD support
1048       Reorganize S/R call for overall time-stepping loop to facilitate
1049       OpenAD revolve loop replacement
1050       (new S/R main_do_loop.F)
1051    o model/src:
1052      - add 3-D array 3rd dimension to argument list of S/R ADAMS_BASHFORTH2/3;
1053      - pkg/cheapaml: remove local S/R ADAMS2d and use instead standard S/R
1054        ADAMS_BASHFORTH2.
1055    o pkg/cheapaml:
1056      - add new parameter (default=F, same as before) to disable full domain
1057        (including land) periodicity in X & Y dir.
1058      - new S/R CHEAPAML_COPY_EDGES to copy relaxation field into edges of
1059        prognostics field ; merge the 2 S/R cycle_2d_tracer and timestep_2d_tracer
1060        into single S/R CHEAPAML_TIMESTEP.
1061    
1062    checkpoint64d (2013/02/17)
1063    o pkg/monitor (angular momentum):
1064      - do not add Eta contribution to the total AM if using rigid-lid;
1065      - correct for Adams-Bashforth in zonal-wind part (instead of in AM_eta).
1066      - horizontal discretisation: compute Zonal wind contribution separately for
1067        each component (instead of from cell centered averaged) and use the 4
1068        grid-cell corner averaged value of Omega*(R*cos_Phi)^2 in AM_eta part.
1069      - Check that AM is conserved with linear dynamics (momAdvection=F and linear
1070        FreeSurf) if using vectorInvariant momentum.
1071    o model/src (horizontal grid):
1072      - move initialisation of all horizontal grid arrays to null value
1073        from specific horizontal grid S/R to main S/R INI_GRID;
1074      - add 2 new arrays to project model C-grid velocity on to zonal direction
1075        (similar to AngleCosC & -AngleSinC but at U and V point location) and
1076        compute them in S/R CALC_GRID_ANGLES.
1077    o pkg/seaice: replace a hard coded parameter by a runtime parameter
1078        SEAICE_JFNK_tolIter
1079    o pkg/seaice: introduce a restricted additive Schwarz (RAS) method in
1080        preconditioner for JFNK (run LSR into the overlaps as far as possible,
1081        i.e OLx/y-2, but overwrite the solution in the overlaps)
1082      - extend loop range in seaice_calc_viscosity
1083      - add new parameters SEAICE_OLx/y (default = OLx/y-2)
1084      - add flexible loop ranges to seaice_preconditioner, seaice_calc_lsr_coeffs
1085      - slightly modify loops in tridiagonal solver lsr-preconditioner
1086      - by default remove the extra exchange in seaice_preconditioner with a
1087        replacement of an undocumented CPP flag by SEAICE_PRECOND_EXTRA_EXCHANGE
1088      - modify offline_exf_seaice so that old results without RAS are reproduced
1089        for output.dyn_jfnk.txt
1090      in seaice_fgmres.F (unrelated to RAS)
1091      - add a cpp-flag option for a re-ordered mapping (potentially more
1092        efficient), but because this changes the results, turn it off by
1093        default
1094      - replace the save statement by local common blocks
1095    o utils/matlab:
1096      - fix tile-offset in rdmnc.m when output was produced using EXCH2.
1097      - update cs_grid/bk_line scripts to use load_grid.m (in utils/matlab)
1098        instead of local script "load_cs.m".
1099    o pkg/seaice:
1100      - fix a serious bug in seaice_fgmres.F, s/r seaice_scalprod, connected
1101        to the scalarProductMetric and the unrolling. By chance this does not
1102        change the verification experiment, because of the particular domain
1103        decomposition
1104    o pkg/diagnostics:
1105      - change default missing_value from UNSET_RL to -999.
1106    o pkg/layers: improve vectorization of layers_fluxcalc.F
1107      - step 1: split loops, make TatU/V 2D arrays. This alone reduces the cpu
1108        time spent in this routine by more than a factor of 3 on an NEC-SX8
1109      - step 2: replace search algorithm by a bisection algorithm found in
1110        Press et al. Numerical Recipes in Fortran. This algorithm can be
1111        vectorized and finds the correct bin in approx. log2(Nlayers) steps.
1112        For now, use this algorithm only for TARGET_NEC_SX defined.
1113      - moved the search algorithm into a separate subroutine, that is kept
1114        within the same file for automatic inlining.
1115      - modified catching potential errors
1116    o pkg/ecco:
1117      - add compile switches ALLOW_SHALLOW_ALTIMETRY and ALLOW_HIGHLAT_ALTIMETRY.
1118    o model/src, pkg/autodiff, pkg/ctrl, pkg/grdchk :
1119      - modifications for ALLOW_GENTIM2D_CONTROL
1120      -- forward_step.F, the_main_loop.F : pass options and arrays for adjoint tapes.
1121      -- load_fields_driver.F : add call to CTRL_MAP_GENTIM2D( myTime, myIter, myThid )
1122      -- add xx_gentim2d0/1 in ctrl_ad_check_lev1_dir.h checkpoint_lev1_directives.h etc
1123      -- use ctrl_swapffields.F (new) instead of exf_SwapFFields.F in ctrl_get_gen.F
1124    o model/src:
1125      - account for moist thermodynamics in (dry) potential temperature equation;
1126        update results of experiments: aim.5l_cs (x2), fizhi-cs (std + aqualev)
1127        and cpl_aim+ocn.
1128      - also switch to standard compiler (gfortran, was using ifort previously)
1129        for fizhi-cs experiments reference output.
1130    o pkg/ctrl:
1131      - 1st step toward generic time-varying control variable (2D) via CPP option
1132        ALLOW_GENTIM2D_CONTROL
1133      - note new namelist ctrl_nml_genarr in data.ctrl
1134    o verification/global_ocean.cs32x15:
1135      - switch off OLD_THSICE_CALL_SEQUENCE (both forward and AD code) to use new
1136        thsice calling sequence and update "output.icedyn.txt" output file.
1137    o pkg/ptracers:
1138      - from Ryan A.: code to allow to restart a tracer at regular time interval
1139        specifying a reset frequency and a reset-phase (for each tracers).
1140    o pkg/thsice:
1141      - implement new sequence of calls for thsice+seaice:
1142          previously:   ice-Dyn,ice-Advect,ice-Thermo(thsice)
1143          new sequence: ice-Thermo(thsice),ice-Dyn,ice-Advect
1144      - allows (with temporary CPP option "#define OLD_THSICE_CALL_SEQUENCE"
1145        in CPP_OPTIONS.h) to recover old sequence;
1146      - update diagnostics for Intermediate State thsice diagnostics: now filled
1147        just before advection (instead of just after advection in old sequence);
1148      - update output of experiment offline_exf_seaice (standard test);
1149      - in global_ocean.cs32x15 exp., postpone output.icedyn.txt update
1150        by setting #define OLD_THSICE_CALL_SEQUENCE in CPP_OPTIONS.h
1151    o pkg/aim_v23:
1152      - use tiled array for aim_CO2 and surface wind speed for export to coupler;
1153      - use standard pkg/mdsio routines to read & write CO2 pickup file;
1154      - in-line S/R AIM_AIM2DYN_EXCHANGES in aim_do_physics.F;
1155      - Implement new sequence of calls for seaice advection (with thsice and
1156        seaice diffusion): do ice advection after ice-Thermodynamic (previously
1157        was done before); change aim_do_physics.F (split the bi,bj loops block);
1158      - use same CPP option (OLD_THSICE_CALL_SEQUENCE) to recover old sequence;
1159    o pkg/thsice:
1160      - add a missing EXCH of sIceLoad in thsice_main.F (ocean set-up) for the case
1161        where just seaice diffusion is used without seaice-dynamics.
1162    
1163    checkpoint64c (2013/01/18)
1164    o pkg/seaice:
1165      - add a parameter JFNKres_tFac that can replace JFNKres_t
1166        (= JFNKres_tFac*JFNKresidual before JFNK solver)
1167      - add a line search option to the JFNK solver
1168      - move update of u/vIce and computation of initial residual into a separate
1169        routine (same file); makes the code a little easier to read (?)
1170      - the line search requires computation of the residual and for some reason
1171        I cannot do the update of u/vIce at the beginning of the Newton loop
1172        without changing the results, so we move computation of the new residual
1173        also to the end of the Newton loop, even without the line search
1174    o pkg/mdsio:
1175      - write missing value (corresponding to undefined array value) to meta files;
1176        skip this if missing value is one (UNSET_RL would be a better value for the
1177        case of undefined missing value but it's current the default missing-value);
1178        Also update mdsio_read_meta.F (reading timeInterval & missing-value).
1179    o pkg/exf & thsice:
1180      - for diagnostics purpose, fill-up and update Qsw array (+ fill the
1181        diagnostics) even when SHORTWAVE_HEATING is #undef;
1182    o verification/cfc_example:
1183      - turn on pkg/layers with pkg/diagnostics (to test pkg/layers and to
1184        illustrate how to use it).
1185    o verification/offline_exf_seaice:
1186      in input: add SEAICErestoreUnderIce=.TRUE., and reduce size of forcing
1187        files to only one time-record.
1188      in input.thermo: narrow the 2 bands of low initial ice-concentration near
1189        N & S edges; switch on SEAICErestoreUnderIce=T; use pkg/diagnostics for
1190        snapshot output; same mcPheePiston value as in thsice with
1191        surf-current=0.2m/s.
1192      in input.thsice: similar set-up as in input.thermo (channel with same seaice
1193        initial conditions).
1194    o verification/cfc_example:
1195      - update file "data" with more standard choice (default rotationPeriod,
1196        exactConserv=T, reduce ivdc_kappa to 10, remove multiDimAdvection=F,
1197        set deltaTFreeSurf to deltaTtracer) and update the output.
1198    o pkg/layers:
1199      - fix bolus part so that it compiles with #undef GM_BOLUS_ADVEC;
1200      - ensure that "layers_bolus" is switched to False when useGMRedi=False.
1201    o verification/offline_exf_seaice:
1202      - set all {field}period to zero for constant-in-time forcing (not tested
1203        anywhere else).
1204    o verification/offline_exf_seaice:
1205      - dyn_lsr  : use pkg/seaice S/R (instead of pkg/thsice) to advect sea-ice;
1206      - dyn_jfnk : use pkg/thsice S/R (instead of pkg/seaice) to advect sea-ice.
1207    o model/src:
1208      - implement Finite-Volume method for (hydrostatic) presure gradient
1209        from S.-J. Lin (QJRMS 1997), for atmosphere using sigma-coordinate.
1210    o pkg/seaice: implement EVP* by Lemieux et al. (2012).
1211      - In order to be compatible with the default EVP code, this requires changing
1212        the EVP code around a little; and because any small change immediately
1213        breaks the lab_sea.hb87 verification experiment, the reference output is
1214        updated two times (each time the remaining aggrement was only 2 digits):
1215        - after replacing 1/dt by 1*recip_dt with a precomputed recip_dt
1216        - after replacing 1/(1+0.5*dt/tau) by a/(a+1), with a=2*tau/dt
1217        The adjoint test lab_sea.evp also needed to be updated.
1218      - Turn on EVP* by setting SEAICE_deltaTevp as before, and setting
1219        SEAICEuseEVPstar=.true.; for EVP* SEAICE_deltaTevp does not need to be
1220        a factor of SEAICE_deltaTdyn, and you can set the number of EVP steps
1221        explicitly with SEAICEnEVPstarSteps (thereby overriding the default of
1222        INT(SEAICE_deltaTdyn/SEAICE_deltaTevp)). Controlling EVP* is deliberately
1223        kept obscure, because I need to test it a little more.
1224    o pkg/cheapaml:
1225      - fix few incorrect type (_RL/_RS) in subroutine calls.
1226    o pkg/seaice:
1227      - new S/R SEAICE_MAP_RS2VEC (similar to SEAICE_MAP2VEC) to map _RS arrays
1228        to _RL vector; this fixes JFNK code when compiling with "-use_r4" option.
1229    o model/src:
1230      - add a warning if using select_rStar=2 with nonlinFreeSurf <> 4;
1231        change (in input_ad*/data) select_rStar from 2 to 1 for AD verification
1232        experiments global_ocean.cs32x15 & tutorial_tracer_adjsens (+ update output)
1233    o pkg/cheapaml:
1234      - replace "273.1 _d 0" by celsius2K in pkg/cheapaml/cheapaml.F and
1235        update output of experiment cheapAML_box.
1236      - store in CHEAPAML.h coeffs ssq[0:2] for saturation specific humidity,
1237        and set them only in one place (cheapaml_readparms.F).
1238      - replace "273.16 _d 0" by celsius2K & replace "3.14159 _d 0" by constant "PI"
1239      - remove re-setting of main-model parameter "celsius2K" (in cheapaml_readparms)
1240        and re-setting of cheapAML params "lath" & "p0" (in cheapaml_init_varia).
1241    o model/src/the_main_loop.F:
1242      - fix revision 129 : need both ALLOW_ECCO and ALLOW_ECCO_EVOLUTION.
1243    o pkg/seaice:
1244      - remove legacy branch code.
1245      - retire SEAICE_GROWTH_LEGACY and SEAICE_CAP_HEFF accordingly.
1246    o verification/*/code*/SEAICE_OPTIONS.h:
1247      - remove documentation for retired CPP flags (SEAICE_GROWTH_LEGACY,
1248        SEAICE_CAP_HEFF).
1249    o pkg/cheapaml:
1250      - use standard routine (S/R GET_PERIODIC_INTERVAL) to decide when it is time
1251        to load new forcing fields.
1252      - add missing "_d 0" where it's needed; + some editing (improve indentation).
1253      - remove switch to "-r8" compiler option (no longer needed) in verification
1254        cheapAML_box, keep same output (small trucation error differences).
1255    o verification/offline_exf_seaice:
1256      - add thermodynamics only test.
1257    o verification/cheapAML_box:
1258      - split the domain in 8 (2x4) tiles; add MPI and multi-threaded test;
1259        keep same output (same 14 digits for cg2d).
1260      - switch on "-r8" compiler option (some numerical values are missing
1261        the "_d 0") and update output (only 6 digits for cg2d were preserved).
1262    
1263    checkpoint64b (2012/12/24)
1264    o pkg/cheapaml:
1265      - remove un-used variables (Qnet,EmPmR) from pickup files.
1266      - store tendency of advected variables into cheapaml pickup file
1267        and fix the AB-2 restart.
1268    o verification/offline_exf_seaice and lab_sea adjoint:
1269      - switch to new code (#undef SEAICE_GROWTH_LEGACY).
1270      - switch to 4 time steps in offline, consistent with lab_sea.
1271      - match parameters from SEAICE_GROWTH_LEGACY branch in data.seaice.
1272      - update results after change of experiment seaice.
1273    o pkg/seaice:
1274      - remove option SEAICE_MULTICATEGORY; has been replaced with run-time
1275        parameter SEAICE_multDim. Issue a warning if SEAICE_MULTICATEGORY is
1276        still defined since SEAICE_multDim needs to be set to MULTDIM value (from
1277        SEAICE_SIZE.h) to recover previous #define SEAICE_MULTICATEGORY default.
1278    o model/src:
1279      - add run-time parameter to select CG2D solver minimum-residual solution
1280        (in case of a poor convergence).
1281    o pkg/seaice/seaice_lsr.F
1282      - move calculation of matrix coefficients into new
1283        S/R SEAICE_CALC_LSR_COEFFS; for now this routine remains in the same
1284        file; the main purpose of this change is to be able to reuse the code
1285        in S/R SEAICE_PRECONDITIONER
1286      - modify the computation of the residual so that the mass of sea-ice
1287        is not used twice; this simplifies the calculations, but since
1288        the residual is never used except when LSR_mixIniGuess.ge.4---and this is
1289        not tested in testreport---this does not affect the testreport results.
1290    o verification/seaice_obcs:
1291      - disable SEAICE_GROWTH_LEGACY; reset input files to match those of
1292        verification/lab_sea/input.salt_plume; changes results/output.txt*
1293    o model/src:
1294      - adapt quasi-hydrostatic formulation to work with p or p* coordinate.
1295    o pkg/seaice:
1296      - improve description of parameters in seaice_fgmres.F and start
1297        cleaning up the code
1298      - change name of SCALPROD to SEAICE_SCALPROD and modify meaning of
1299        second argument
1300      - add a metric based on grid cell area to SEAICE_SCALPROD; update
1301        results of offline_exf_seaice.dyn_jfnk
1302      - compute initial residual norm in seaice_jfnk based on SEAICE_SCALPROD
1303    o pkg/aim_v23:
1304      - fix an other bug in dissipation heating (grid-cell area was missing).
1305    o model/src + pkg/seaice:
1306      - add global (multi-tile) linear solver for pair of tri-diagonal system
1307        along X and Y lines, respectively for U and V component.
1308        Note: 1) MPI and cube-exchange not yet coded.
1309            2) probably not accurate for poorly conditioned / large size problem.
1310      - add option for SEAICE_LSR to use global (multi-tile) tri-diagonal solver;
1311        default: not compiled and not used.
1312    o pkg/seaice:
1313      - first attempt at a multi-threaded fgmres solver for the JFNK solver:
1314        introduce bi/bj loops and use global_sum_tile_rl instead of
1315        mpi_allreduce in seaice_fgmres.F
1316      - improve diagnostics output for fgmres solver (seaice_fgmres.F)
1317      - replace a few unnecessary goto statements by if-blocks  (seaice_fgmres.F)
1318      - add a verification experiment for JFNK in offline_exf_seaice
1319    o verification:
1320      - change (for now, only fwd test) offline_exf_seaice experiment:
1321        use a re-entrant channel with idealized coastline (trapezoidal shape)
1322        at southern boundary to explore seaice dynamics and thermodynamics
1323        with simple forcing. Main set-up has dynamics+thermo and SST relaxation;
1324        secondary test (input.thsice) use thermodynamics only with SST relaxation.
1325      - add seaice-dynamics only secondary test using LSR and pkg/thsice advection.
1326    o pkg/exf:
1327      - disable "sstExtrapol" when Nr=1
1328    o verification:
1329      - add new experiment "cheapAML_box" (simple 1 layer set-up from Bruno Deremble)
1330        to test pkg/cheapaml.
1331    o pkg/aim_v23 & pkg/shap_filt:
1332      - fix dissipation heating (erroneous gravity multiplication factor).
1333    o pkg/seaice:
1334      - remove unused field pressPre from jfnk solver
1335      - rename two subroutines in seaice_preconditioner.F
1336    o eesupp/src:
1337       - S/R MDSFINDUNIT avoids reserved unit numbers (scrUnit1, eeDataUnit ...)
1338    o pkg/seaice/seaice_preconditioner.F: fix preconditioner once again
1339       - remove wrong parts of the rhs and the lhs (were in there
1340         because I did not understand the concept of this preconditioner)
1341       - add an exchange between u- and v-sweep. This increases communication
1342         by a factor of two but improves the convergence of jfnk. Ideally,
1343         one would like the u- and v-sweep to be independent. So far within
1344         undocumented ifdefs
1345       - reorganize the extra computations for printing the residuals
1346    o tools/genmake2:
1347      - comment out the "mpif.h" include in NetCDF test programm (for MPI built)
1348        since it's not necessary (and was preventing to use MNC in some cases).
1349    
1350    checkpoint64a (2012/11/16)
1351    o pkg/autodiff:
1352      - improve pkg-internal logical parameter switch (inAd/inFwd mode) so that
1353        autodiff_readparms.F no longer depends on calling order (within
1354        packages_readparms.F) and no longer requires to include ${PKG}_PARMS.h):
1355        rename param turnFreeDriftInAdMode to SEAICEuseFREEDRIFTswitchInAd
1356        and change param SEAICEuseDYNAMICSinAdMode to SEAICEuseDYNAMICSswitchInAd.
1357    o pkg/obcs:
1358      - adding tidal velocity forcing capability to obcs
1359        for usage example, see verification/seaice_obcs/input.tides
1360    o pkg/seaice:
1361      - turn the LSR-relaxation parameters WFAU/V into runtime parameters
1362        SEAICE_LSRrelaxU/V
1363      - introduce runtime parameter SEAICEetaZmethod (=0 by default)
1364    o pkg/aim_v23:
1365      - implement heating from friction (bottom friction and stratospheric drag).
1366    o pkg/shap_filt:
1367      - fix diagnostic "SHAP_dKE" (was 2 time smaller); implement heating from
1368        dissipation but only for Shap_funct=2, active when addFrictionHeating=T.
1369    o model/src:
1370      - move AddMass common block from DYNVARS.h to FFIELDS.h; allow to read-in
1371        time-constant addMass field from file (addMassFile);
1372      - support for heating due to friction (and Kinetic Energy dissipation):
1373        add option, run-time switch and 3-D field array + support code ; each pkg
1374        or S/R can add heating contribution (if there is a sink of KE); the sum is
1375        accounted for as a Temperature tendency term (EXTERNAL_FORCING_T).
1376    o pkg/seaice:
1377      - complete merge of ITD code into seaice_growth.F
1378        from MITgcm_contrib/torge/itd/code/
1379        no verification so far, but Torge Martin tested
1380        "1-D test case and Beaufort set up;
1381        deliver okay results after 1 model year."
1382      - complete merge of SEAICE_SIZE.h into all relevant routines
1383      - move computation of eta at Z-points into calc_viscosities
1384        + introduce global field etaZ
1385        + add different methods for computing etaZ, for now the old
1386          method (simple averages of eta to Z-points) is hardwired
1387        + replace etaMeanZ by etaZ in seaice_lsr, seaice_calc_residual,
1388          seaice_preconditioner
1389      - simplify computations for SEAICE_ZETA_SMOOTHREG
1390      - seaice_preconditioner:
1391        + replace one remaining press by pressLoc (mistake)
1392        + adjust printing of residuals
1393      - improve I/O of diagnostics of JFNK in seaice_jfnk.F:
1394        + add (SEAICE.h) and rename some counters (initiliased in
1395          seaice_init_fixed.F)
1396        + add _BEGIN/END_MASTER (myThid)  around print statements
1397        + print total number of iterations and failures over SEAICE_monFreq
1398          interval to STDOUT
1399      - move control over output-messages by fgmres to seaice_jfnk to save
1400        some operations
1401      - move resetting initial guess for fgmres outside of seaice_fgmres_driver
1402        in order to make restarts with sol .ne. zero (fgmres with restarts)
1403        (seaice_jfnk.F, seaice_fgmres.F)
1404      - seaice_calc_l/rhs.F: replace maskW/S by maskInW/S; this fixes
1405        a serious convergence problem when open boundaries are involved
1406    o pkg/ggl90: fix computation of control volumes for the case of
1407      ALLOW_GGL90_HORIZDIFF (probably not used very often): move control volumes
1408      up half a grid cell from C-centered to W-centered (pointed out by C. Eden)
1409    o pkg/seaice: simplify seaice_evp by avoiding use of extra fields u/vIceC
1410    o pkg/autodiff
1411      - Add inAdMode switch for SEAICEuseDYNAMICS:
1412        SEAICEuseDYNAMICSinAdMode
1413        (extend logic in ADAUTODIFF_INADMODE_SET)
1414    o pkg/seaice
1415      - Step 1 of merging ice-thickness distribution (ITD) code from
1416        MITgcm_contrib/torge/itd/ (author: Torge Martin)
1417        The code implements concept laid out in Thorndike et al. (1975);
1418        code is enabled via CPP flag SEAICE_ITD
1419        nITD (in SEAICE_SIZE.h) defines number of ice thickness categories;
1420        code is not complete yet!!
1421      - SEAICE_SIZE.h now included in almost all seaice routines
1422    o verification (using seaice):
1423      - switch back seaice-dynamics (+ lower SOLV_MAX_ITERS) in ADM exp.
1424        global_ocean.cs32x15.seaice ; update results.
1425      - compile B-grid dynamics in FW test exp 1D_ocean_ice_column ;
1426      - compile C-grid dynamics with #define SEAICE_ALLOW_JFNK in FW test exp
1427        offline_exf_seaice (previously compiling B-grid).
1428    o pkg/exf:
1429      - fix some STOP conditions in exf_check.F (from Aug 28, modifs did not allow
1430        to specify neither just 1 comp of wind or wind-stress, nor no surface momentum
1431        forcing): just replace CPP option ALLOW_ATM_WIND with run-time param useAtmWind.
1432    o pkg/layers (adjust changes from Sept 19):
1433      - do snap-shot output and fill diagnostics from inside iLa loop (layers_calc.F)
1434        this allows to remove "layers_maxNum" dimension from all layers arrays.
1435    o pkg/layers (adjust changes from Sept 19):
1436      - remove ALLOW_LAYERS_OUTPUT ; fix snap-shot and time-ave output ;
1437      - snap-shot extended to all type of layers (not just the 1rst type);
1438      - remove layers variables when corresponding CPP option is undef.
1439    o pkg/layers:
1440      - rename pkg/layers variable and add new output (layer exist & un-weighted
1441        velocity in layer)
1442    o pkg/seaice:
1443      - simplify (?) ocean-drag coefficent computations by using
1444        the same routine in all three solvers (saves some code lines)
1445      - remove global fields DRAGA and DRAGS from C-grid code and
1446        declare them locally in lsr.F (the only place where they are
1447        still used)
1448      - update AD output of lab_sea.evp (very sensitive anyway).
1449    o pkg/seaice: add Jacobian-free Newton Krylov solver for ice dynamics
1450      (Lemieux et al. 2010, 2012). Turn on with the usual SEAICE_ALLOW_JFNK
1451      and SEAICEuseJFNK=.true. A few things to note:
1452      - involves a FGMRES, that is parallel but very inefficient,
1453        because of many scalar products (global sums) in the Gram-Schmidt
1454        orthogonalization method. Needs to be replaced. Original code
1455        from J.-F. Lemieux
1456      - preconditioner for FGMRES is a stripped down version of LSOR
1457      - SOLV_MAX_ITERS is now used for LSOR as a solver and as a
1458        preconditioner. For the preconditioner, the default is set to 10.
1459      - Jacobian times vector is computed with finite differences
1460      - marginally related to JFNK-solver: add a smooth regularization for
1461        zeta with tanh that will improve convergence (Lemieux and Tremblay,
1462        2009) for any implicit solver (not implemented for EVP because EVP
1463        does not need this regularization in the first place). Define
1464        SEAICE_ZETA_SMOOTHREG in SEAICE_OPTIONS.h to use.
1465    o eesupp/src:
1466      - check in genmake2 that intrinsic S/R flush is available.
1467      - add S/R to flush IO unit (if intrinsic S/R flush is available)
1468      - flush standard & error msg unit before MPI termination
1469      - if debugMode, flush IO unit after printing msg
1470    o pkg/ctrl:
1471      - ctrl_unpack.F, ALLOW_GENARR3D_CONTROL code: fix missing argument in call
1472        to ctrl_set_unpack_xyz.
1473    
1474    checkpoint64 (2012/10/09)
1475    o pkg/shelfice
1476      - in mom_fluxform.F, mom_vecinv.F:
1477        CALL SHELFICE_V_DRAG(bi,bj,k,vFld,KE,KappaRU,vF,myThid)
1478        Bug fix KappaRU -> KappaRV
1479        does not change verification/isomip but may change other setups
1480        (presumably constant KappaRU=KappaRV)
1481      - fix diagnostics SHIU/Vdrag (thanks to Tom Millgate)
1482    o pkg/obcs:
1483      - fixed some indexing bugs in obcs_seaice_sponge.F
1484      - added obcs relaxation subroutines for HSALT and HSNOW
1485      - changes verification/seaice_obcs/results/obcs_seaice_sponge.F
1486    o pkg/seaice:
1487      - add "multicategory" parameterization for snow in analogy to ice,
1488        default is off for now.
1489    o pkg/obcs:
1490      - added obcs_seaice_sponge.F for obcs relaxation of seaice variables;
1491        see verification/seaice_obcs/input.seaiceSponge for example application.
1492      - remove local commom bloc "OBCS_GLOBAL" in obcs_readparms.F and do all the OB
1493        index setting by master-thread. This fix multi-threads Pb in previous modifs.
1494    o pkg/layers :
1495      - add diagnostics to pkg/layers
1496      - move the meat of pkg/layers from layers_calc.F to layers_fluxcalc.F
1497        (from R.Tulloch). Layers_calc.F now calls layers_fluxcalc.F accordingly.
1498    o pkg/generic_advdiff/gad_implicit_r.F :
1499      - fix ADVr diagnostics in case of both implicit vertical advection and diffusion.
1500    o pkg/seaice/seaice_growth.F:
1501      - fix SItflux diagnostics in virtual salt flux + balanceEmpmr case.
1502    o pkg/obcs:
1503      - change default setting of OBCS_UVICE_OLD from defined to undef;
1504      - use new parameter OB_indexNone for null index value (instead of hard-coded 0)
1505        in all pkg/obcs code and in other pkgs; remove k loop in obcs_check_depths.F;
1506      - pass OB_indexNone as (new) argument to S/R CTRL_MASK_SET_[X,Y]Z;
1507      - change OB null index value (OB_indexNone) to -99 ; this fix the problem
1508        with Southern & Western OB at a tile edge (at least in a simple set-up).
1509    o pkg/obcs:
1510      - change settings of OB index in case OB coincides with tile edge (shared by
1511        2 tiles), so that common OB location is registered by both tiles (instead of
1512        only 1). However, for Southern and Western OB, index value = 0 is not
1513        recognized as valid OB index (=default null value) and needs to be fixed.
1514      - modify accordingly OBCS_BALANCE_FLOW and OBCS_MONITOR (avoid double counting)
1515      - new parameter "OB_indexNone" for null index value (for now, still zero)
1516        to replace hard-coded null index value of zero.
1517    o pkg/exch2:
1518      - improve W2_USE_E2_SAFEMODE (faster) and W2_E2_DEBUG_ON:
1519        always check buffer-size (but outside the loop); move checking for valid
1520        index from W2_USE_E2_SAFEMODE to W2_E2_DEBUG_ON; in W2_E2_DEBUG_ON,
1521        print each tile and point connection only if |W2_printMsg|>= 2 and 3.
1522    o pkg/ctrl (pack & unpack):
1523      - in ctrl_pack.F & ctrl_unpack.F, use the same local file-name variable
1524        (locally defined) for different variables (+ remove the variable-specific
1525        file name in CTRL_GENARR.h). For now, only implemented for GENARR2/3D_CONTROL
1526        (to be extended to other local file names in ctrl.h).
1527    o pkg/flt:
1528      - add a FLT_Iter0 option (similar to PTRACERS_Iter0).
1529    o pkg/mdsio:
1530      - fix missing STOP in mdsio_readvec_loc.F (case ioUnit=0) when file is missing
1531    o tools/genmake2:
1532      - add similar dependences for target EXE_AD & EXE_FTL as we have for EXECUTABLE
1533        (added by Alistair in version 1.51 for building without make depend);
1534      - remove Header files list (H_SRC_FILES) from the dependence of targets
1535         ad_input_code.f & ftl_input_code.f (not clear why it was added in the first
1536        place in version 1.23): this save going through staf when unrelated header
1537        file has been modified.
1538       Note: for an intermediate target (e.g., ad_input_code.f or adtaf) without
1539        "make depend" step, still need to do "make links" before "make adtaf".
1540    o eesupp/src (+ few pkg src files) & genmake2:
1541      - finish to remove ALWAYS_USE_MPI in source code that TAF does not see;
1542      - no longer set ALWAYS_USE_MPI in Makefile (was done by genmake2).
1543      - improve genmake2 checking for ALLOW_${PKG} in CPP_OPTIONS.h files (distinguish
1544         upper/lower case ; account for space between "#" and undef/define)
1545    o pkg/flt (with exch2):
1546      - cleaning: fix so that it compiles; move remaining MPI calls out of flt_exch2.F;
1547      - simplify threads synchronisation; fix (many issues) multi-threaded with MPI.
1548    
1549    checkpoint63s (2012/09/05)
1550    o pkg/ecco:
1551      - remove #ifdef ALLOW_SMOOTH_CORREL3D brackets.
1552      - add more relevant #ifdef ALLOW_SMOOTH ones.
1553      - sort out useAtmWind, useSMOOTH, ctrlSmoothCorrel2D.
1554    o pkg/ctrl:
1555      - CTRL_OPTIONS.h : document CPPs related to smoothing; ALLOW_SMOOTH_CORREL2D/3D,
1556        ALLOW_CTRL_SMOOTH, ALLOW_SMOOTH_CTRL2D, ALLOW_SMOOTH_CTRL3D.
1557      - ctrl.h : document run time params doInitXX, doMainPack, doMainUnpack, doPackDiag,
1558        doSinglePrecTapelev (audodiff param!), ctrlSmoothCorrel2D (new) and
1559        ctrlSmoothCorrel3D (new).
1560        The added ctrlSmoothCorrel2D/3D replace the old ALLOW_SMOOTH_CORREL2D/3D CPP.
1561      - ctrl_readparms.F : initialise ctrlSmoothCorrel2D/3D and read from namelist.
1562      - ctrl_init.F ctrl_pack.F ctrl_unpack.F : switch off ustress/vstress
1563        controls when useAtmWind, and vice versa.
1564      - ctrl_map_ini_ecco.F : UVEL0, VVEL0, edtaux, edtauy cannot be smoothed as tracers.
1565      - ctrl_get_gen.F : replace #ifdef ALLOW_SMOOTH_CORREL2D with
1566          #ifdef ALLOW_SMOOTH, IF ctrlSmoothCorrel2D, IF useSMOOTH.
1567      - ctrl_map_ini_gen.F : replace #ifdef ALLOW_SMOOTH_CORREL3D with
1568          #ifdef ALLOW_SMOOTH, IF ctrlSmoothCorrel3D, IF useSMOOTH.
1569      - ctrl_set_pack_xy[z].F, ctrl_set_unpack_xy[z].F:
1570        replace ALLOW_SMOOTH_CORREL2D/3D brackets with ctrlSmoothCorrel2D/3D.
1571    o pkg/smooth:
1572      - remove un-necessary includes.
1573      - remove ALLOW_SMOOTH*D and ALLOW_SMOOTH_CORREL*D brakets.
1574        Those CPP options were never defined, and not necessary.
1575    o model/src:
1576      - fix CPP brackets in ini_mixing.F (GM_background_K belongs to gmredi).
1577      - standard treatment of useSMOOTH.
1578    o pkg/autodiff:
1579      - add LOGICAL useGGL90inAdMode, useGGL90inFwdMode, useSALT_PLUMEinAdMode,
1580        useSALT_PLUMEInFwdMode allowing to switch off ggl90 and salt_plume adjoint.
1581    o pkg/exch2:
1582      - add "if usingMPI" where it was missing (in exch2_rx?_cube*.template)
1583        + start to remove ALWAYS_USE_MPI in source code that TAF does not see.
1584      - make new S/R W2_MAP_PROCS out of w2_eeboot.F to setup exch2 CommonFlag
1585        and tiles to process mapping.
1586      - re-arrange 3 header files (W2_EXCH2_PARAMS.h, _BUFFER.h & _TOPOLOGY.h)
1587        moving /EXCH2_FILLVAL_RX/ & /W2_EXCH2_COMMFLAG/ to W2_EXCH2_TOPOLOGY.h;
1588        rename "exch2_tProc" to "W2_tileProc" and move seting of e2FillValue_RX
1589        from w2_eeboot.F to w2_readparms.F.
1590    o eesupp/src:
1591      - set exchNeedsMemsync & exchUsesBarrier according to "usingMPI" (instead of
1592        ALWAYS_USE_MPI) + moved from ini_communication_patterns.F to eeset_parms.F;
1593        also move setting of exchCollectStatistics from exch_init.F to eeset_parms.F
1594      - in eedie.F and all_proc_die.F, always call MPI_FINALIZE when ALLOW_USE_MPI
1595        is defined (remove condition on usingMPI) to match cases where MPI_INIT
1596        has been called.
1597      - fix bug I put in previous modif of exch_sm_3d_rx.template (not much used);
1598      - change default (non-MPI) value of myPid (from 1 to 0) to match MPI settings
1599        (so that on 1 proc, get same myPid independently of usingMPI)
1600      - add a stop if multi-procs but usingMPI=F ; stop also if usingMPI=T and
1601        useCubedSphereExchange with EXCH-1 (safer).
1602      - add "if usingMPI" where it was missing (+ start to remove ALWAYS_USE_MPI).
1603    o pkg/ggl90:
1604      - fix bug in filling corner mask array "mskCor" (FILL_CS_CORNER_TR_RL call)
1605        used in ALLOW_GGL90_SMOOTH code.
1606    o pkg/flt:
1607      - fix typo in FLT_WITHOUT_Y_PERIODICITY (the effect was to ignore stopping
1608        floats at the Southern end of the domain).
1609    o eesupp/inc:
1610      - add a list of CPP-options which can be set by Makefile (DEF_IN_MAKEFILE.h);
1611        but not used (and not to be used) anywhere, just for documentation.
1612    o pkg/autodiff, exf, ptracers & seaice (AD & TL output):
1613      - comment out the very nasty "writeBinaryPrec = writeStatePrec" line, since:
1614        a) can damage previously written records in any other multi-record files.
1615        b) if needed, can easily do it cleanly, by calling S/R WRITE_REC_3D_RL/S.
1616    o tools/genmake2:
1617      - define variable MAKE within Makefile and use it in place of 'make';
1618      - update AD_CONFIG.h (if needed) before building any of the executable
1619        (forward, adjoint or tangent-lin); this involves a 2nd invocation of make;
1620        and add the usual #ifndef/#define AD_CONFIG_H in AD_CONFIG.h;
1621      - always print usual warning comment 'this file is automatically generated'
1622        from script convert_cpp_cmd2defines (+ remove this warning from genmake2).
1623    o pkg/cheapaml:
1624      - updated to correspond to the code used in accepted paper (Nico Wienders).
1625    o pkg/exf:
1626        added run time switch useAtmWind to replace ALLOW_ATM_WIND cpp switch.
1627        ALLOW_ATM_WIND now just sets the useAtmWind default (see exf_readparms.F)
1628        and force defines ALLOW_BULKFORMULAE (EXF_OPTIONS.h).
1629    o pkg/exf, autodiff, ctrl, ecco and seaice:
1630        remove ALLOW_ATM_WIND brackets, or replace them with useAtmWind ones.
1631    o pkg/ctrl, ecco:
1632        allow to compile both ALLOW_U/VSTRESS_CONTROL and ALLOW_U/VWIND_CONTROL.
1633        Depending on useAtmWind, one is inactive, and the other is active (see
1634        exf_getffields.F/exf_getsurfacefluxes.F).
1635    o tools/genmake2:
1636      - improve error msg when failing in 2nd test of check_for_broken_Ff
1637      - fix option '-makefile' short-name (-mf according to genmake2 -help)
1638      - source local config file "genmake_local" just after processing the genmake2
1639        command arguments (previously done before processing arg).
1640    o pkg/grdchk:
1641      - add a call to TURNOFF_MODEL_IO for Tangent-Linear run (in this case, call
1642        to this routine from cost_final has been dropped in g_cost_final)
1643      - improve printed information (more explicit msg, no longer using "print *,"
1644         fix fcpertminus printed value).
1645    o model/src:
1646      - move call to COST_INIT_VARIA out of packages_init_variables.F directly
1647        into initialise_varia.F (just after calling PACKAGES_INIT_VARIABLES):
1648        this prevents getting cost-funct reset in adinitialise_varia recomputations.
1649    o pkg/dic:
1650      - move initialisation of "freefe" array from from dic_biotic_forcing.F to
1651        fe_chem.F: this prevents TAF from dropping this initialisation in TLM code.
1652    o pkg/grdchk:
1653      - grdchk_main.F : added CALL GLOBAL_SUM_INT( ierr , myThid )
1654      - grdchk_getadxx.F etc. : omit I/O if ierr.EQ.0
1655    o pkg/autodiff/ctrl/grdchk :
1656      - attempt to sort out what works and what does not,
1657        with regard to I/O, and to warn/stop accordingly.
1658    o pkg/grdchk:
1659      - attempt to fix grdchk in the case of useSingleCpuIO.
1660      - "if ( myProcId .EQ. grdchkwhichproc .AND. ierr .EQ. 0 )"
1661       statements were moved from grdchk_main.F and into
1662       grdchk_getadxx.F grdchk_getxx.F grdchk_setxx.F.
1663      - a global sum is applied to record numbers icvrec/layer
1664       out of grdchk_loc so that they be passed to I/O routines.
1665    o pkg/smooth:
1666      - fix recomputation that appeared with nlfs : use smooth_recip_hFacC,
1667        smooth_hFacW, smooth_hFacS (copied at init_fixed) in 3d case.
1668    o verification/testreport:
1669      - add option '-tlm' for Tangent-Linear test (-adm,-oad,-tlm are all exclusive);
1670      - can also use compressed (gzip) reference output file;
1671      - change format (in pkg/grdchk) of TLM output (+ add forward gradient)
1672        to be easier to collect by testreport.
1673      - update existing TLM output (half out-of-date by more than 3 yrs).
1674      - report NETCDF & LAPACK settings (from genmake2) in output dir.
1675      - report run-time in each individual summary (previously only for AD test);
1676        for TLM test, add also TAF version.
1677      - add daily TLM test on (old) aces cluster + weekly test on baudelaire.
1678    
1679    checkpoint63r (2012/08/15)
1680    o tools/genmake2:
1681      - fix Makefile for target ftlall (+ update files to clean after make ftlall)
1682    o pkg/ecco/ecco_cost_final.F :
1683      - fix fc print statements (to stdout and costfunction0000) so
1684        that the printed value is always after the global sum.
1685    o pkg/seaice/seaice_dynsolver.F :
1686      - fix ice strength assymptote at SEAICE_area_max<1
1687        (no change for the standard case of SEAICE_area_max=1)
1688    o some cleaning:
1689      - pkg source files: ensure that all *.F files from each pkg included the
1690        corresponding ${PKG}_OPTIONS.h file (except stand-alone src file which
1691        only includes CPP_EEOPTIONS.h); fix S/R CTRL_SMOOTH ; update AD experiment
1692        code_ad/*.F src files; add new option-file in pkg/admtlm + corresponding
1693        includes;
1694      - model/src: add PACKAGES_CONFIG.h wherever ALLOW_AUTODIFF[_TAMC] is used.
1695      - ALLOW_DIFFKR_CONTROL: add a stop in S/R CTRL_CHECK in case ALLOW_3D_DIFFKR
1696        is undef; also define /DYNVARS_DIFFKR/ common block in DYNVARS.h when
1697        ALLOW_DIFFKR_CONTROL is defined, to allow to compile and reach this stop.
1698      - update option-file CPP_OPTIONS.h of all AD experiments:
1699        * no longer include PACKAGES_CONFIG.h ;
1700        * includes ECCO_CPPOPTIONS.h if PACKAGES_CONFIG.h has been included ;
1701        * def/undef ALLOW_3D_DIFFKR independently of ALLOW_DIFFKR_CONTROL (before
1702          including ECCO_CPPOPTIONS.h).
1703    o pkg/cost, pkg/ctrl, pkg/ecco option-file:
1704      - clean-up and split content of old pkg/ecco/ECCO_CPPOPTIONS.h file into
1705        separated pkg option-file (done according to old doc from ECCO_CPPOPTIONS.h,
1706        not necessary accurate).
1707      - add a template for option-file ECCO_CPPOPTIONS.h, mostly empty, in
1708        pkg/autodiff, i.e., the 1rst pkg to compile for adjoint built, with lines to
1709        deliberately break compilation (a remainder that it needs to be customized)
1710      - in pkg/ecco, includes ECCO_OPTIONS.h instead of COST_OPTIONS.h
1711      - rename COST_CPPOPTIONS.h to COST_OPTIONS.h
1712      - rename CTRL_CPPOPTIONS.h to CTRL_OPTIONS.h
1713    o tools/genamke2:
1714      - check for lapack.
1715    o pkg/cost and pkg/ecco : attempt to sort out some of the limiting intricacies.
1716      - pkg/cost.cost_final.F : allow for use of pkg/ecco and pkg/cost cost functions
1717        jointly. The exclusive ifdefs were removed, to add costs terms (when defined)
1718        from both packages.
1719      - the fc global sum in pkg/ecco/ecco_cost_final.F was removed accordingly.
1720      - for objf_atl we use either the pkg/ecco or the pkg/cost term depending on CPPs.
1721      - pkg/ecco and model/src : add CPP brackets around pkg/cost and pkg/ctrl includes
1722        of "CTRL_SIZE.h" "ctrl.h" "ctrl_dummy.h" "optim.h" / "cost.h" accordingly.
1723    o pkg/cost : add comments to explain special and/or untested setups.
1724    o pkg/exf:
1725      - use EXF_OPTIONS.h to set pkg/exf options except if done in ECCO_CPPOPTIONS.h
1726        (previously, ALLOW_AUTODIFF_TAMC was controling this switch).
1727    o verification/*/code_ad:
1728      mimimal cleaning of AD experiments ECCO_CPPOPTIONS.h option-file:
1729      - reccord when this file is included (define ECCO_CPPOPTIONS_H)
1730      - remove the most obvious obsolete features (e.g., #define ALLOW_COST not
1731        allowed since Oct 2003 in any option-file except in PACKAGES_CONFIG.h)
1732    o pkg/seaice :
1733      - added possibility to change ice strength/PRESS0 relationship to
1734        HEFF, according to the following run time parameters
1735        SEAICEpresPow0 :: HEFF exponent for ice strength below SEAICEpresH0 (integer, >0)
1736        SEAICEpresPow1 :: HEFF exponent for ice strength above SEAICEpresH0 (integer, >0)
1737        SEAICEpresH0   :: HEFF threshold for ice strength            (m)
1738    o pkg/ggl90 :
1739      - added run time flag mxlSurfFlag to include the code that ensure
1740        mixing between first and second level (previously included as a comment)
1741    o verification/1D_ocean_ice_column/input_ad/data.autodiff :
1742      - add test of newly added dumpAdByRec=T option where
1743        we write all records to one file per variable.
1744    o verification/global_ocean.cs32x15/code_ad/CPP_OPTIONS.h :
1745      - switch to #define ALLOW_BALANCE_RELAX and ALLOW_BALANCE_FLUXES
1746        to check that this code is ok with taf and compiles in adjoint.
1747    o pkg/autodiff :
1748      - added run time param dumpAdByRec : ad dump format switch.
1749        If true then write all records to one file per variable.
1750        Else write one file per record (remains the default).
1751      - revise seaice_ad_dump.F and exf_adjoint_snapshots_ad.F accordingly.
1752    o pkg/seaice:
1753     - Added SEAICEuseTILT run time switch : if set to
1754       false then omit the tilt term in seaice dynamics.
1755     - Fix free drift calculation.
1756    o pkg/shelfice:
1757      When initializing SHELFICEDragQuadratic, set default to be
1758      consistent with shiCdrag in case SHELFICEuseGammaFrict is used,
1759      but retain option to set it independently
1760      (inconsistenty spotted by Veronique Dansereau)
1761    o eesupp/inc:
1762      - in EEPARAMS.h, add real-type constant for some frequently used simple number
1763         (0,1,2,1/2), with name explicitly referring to RS/RL type.
1764    o model/src:
1765      - move balancing of relaxation terms to new S/R balance_relax.F.
1766    o pkg/autodiff:
1767      re-write active I/O high-level (control) S/R:
1768      - rename  S/R ACTIVE_READ/WRITE_RL to ACTIVE_READ/WRITE_3D_RL
1769      - add 1 more argument (useCurrentDir) to replace the "_LOC" 2nd set of S/R.
1770      - use standard pkg/mdsio I/O routines (MDS_READ/WRITE_SEC_XZ/YZ  and
1771        MDS_READ/WRITE_FIELD); change loops to multi-threads.
1772      - update and merge active_file_control_slice.flow into active_file_control.flow
1773      - update the calls in lower level S/R (active_file.F, active_file_g.F and
1774        active_file_ad.F) keeping the argument list and function unchanged.
1775      - also update lower-level "_LOC" version (call same S/R with "useCurrentDir
1776        =.TRUE.") and remove high-level (control) _loc version (not called anymore).
1777      - new low-level active I/O routines, one for each type (RL/RS), for active var
1778        of various (XY,XZ,YZ) shape and level number (arguments: arrShape, myNr);
1779        fix ctrl_init_wet.F & ecco_cost_weights.F by calling the new S/R with the
1780        right type.
1781    o autodiff and RS=real*4:
1782      - call the right type (_RS instead of _RL) of S/R in few output S/R (pkg/exf
1783        ad-monitor and snapshots); disable arrType='RS' in mdsio_gl*.F ;
1784      - change argument type of 3-D mask argument to _RS to match type in the call
1785        (in seaice_cost*.F, ctrl_*_gen.F and *ctrl_bound.F); to be continued.
1786    o pkg/thsice:
1787      - re-anable balanceEmPmR when useSEAICE=T with useThSIce=T.
1788      - option to correct ocean fresh-water flux for imbalance of Atmos+Land
1789        fresh-water flux: uniform correction or proportional to local precip.
1790    o pkg/ctrl:
1791      - new header file CTRL_SIZE.h for parameters maxCtrlArr2D, maxCtrlArr3D
1792      - redefine CPP option ALLOW_BOTTOMDRAG_CONTROL to
1793                            ALLOW_BOTTOMDRAG_CONTROL_NONGENERIC
1794      - verification/hs94.1x64x5/ tests ALLOW_GENARR{2D,3D}_CONTROL
1795    
1796    checkpoint63q (2012/07/30)
1797    o pkg/autodiff:
1798      note about monitor and snap-shot of ad-variables:
1799      a) need to apply ADEXCH before monitor or output of ad-vars to include
1800       overlap contributions (was done for adjDump but missing for monitor).
1801      b) since ADEXCH implies adding overlap values to interior array, machine
1802       truncation error is expected when adding an ADEXCH call in the middle of
1803       the time-stepping (although mathematically identical).
1804      modifs:
1805      - fix some incorrect type (RL/RS, UV/scalar) in ADEXCH calls and ad-vars
1806        declaration (adEddyPsiX,adEddyPsiY in adcommon.h).
1807      - add new run-time params (dumpAdVarExch & mon_AdVarExch) to select how  to
1808        apply ADEXCH before monitor or snap-shot of ad-variables:
1809           =0 : no ADEXCH ; =1 : do ADEXCH ; =2 : apply ADEXCH on a local copy.
1810      - implement new method (copy+adexch) for snap-shot and monitor of main model
1811        ad-vars (initially not used by default -> output unchanged).
1812      - change default (set to 2) to use new method and update few output_adm.txt
1813        with accurate ad-monitor (global_ocean.90x40x15, tutorial_global_oce_biogeo
1814        and both tutorial_tracer_adjsens tests).
1815      - switch 2 global_ocean.cs32x15 AD-tests to AB-2 (seaice_dynmix & thsice)
1816        and turn off momDissip_In_AB in the 2 other (needed for stable AB-3).
1817    o pkg/ctrl:
1818      enable the use of a variable number (maxCtrlArr2D, maxCtrlArr3D) of
1819      generic control variables via
1820      #define ALLOW_GENARR2D_CONTROL and/or #define ALLOW_GENARR3D_CONTROL
1821      Only required customization should be S/R ctrl_map_ini_genarr.F
1822      (routine in repository contains example)
1823    o pkg/exf:
1824      - fix and refine checking of surface-relaxation setting when using EXF
1825    o verification (adjoint exp):
1826      - reduce length of simulation by half for experiment global_ocean.cs32x15
1827        (std, seaice & seaice_dynmix) and exp tutorial_dic_adjoffline; update output.
1828    o pkg/mom_common (mom_u/v_bottomdrag), pkg/shelfice (shelfice_u/v_drag)
1829      - replace if statements KE.ne.0 with KE.gt.0 to avoid sqrt of negative numbers
1830        of KE that can occur with aggressive optimization
1831      + put quadratic bottom drag calculation in separated loops (only done if
1832        using bottomDragQuadratic)
1833    o model/src: CG2D_NSA
1834      - clean-up:  stop if cg2dNormaliseRHS=T and AUTODIFF
1835         and replace GLOBAL_SUM calls with GLOBAL_SUM_TILE.
1836      - in test-exp that uses CG2D_NSA (bottom_ctrl & tutorial_tracer_adjsens),
1837         change cg2d residual target to be expressed in Wunits (=> do not normalise
1838         RHS ; this fix global_max Pb with TAF); update output.
1839    o verification/tutorial_tracer_adjsens:
1840       improve parameter consistency (and get rid of warnings):
1841       - use deltaTFreeSurf=deltaTtracer (better with NonLin FreeSurf);
1842       - switch Temp Adv Scheme from 81 to 80 (no limiter since theta < 0 is physical)
1843       - use staggerTimeStep (for stability) in som81; use default rotation period.
1844    o pkg/exch2:
1845      - with empty facet: fix compact-format (W2_mapIO=1) definition (was previously
1846        reset to 0 = 1 long line in X)
1847    o pkg/mdsio:
1848      - fix reading of dimensions from meta file for large-size domain
1849    o model/src:
1850      - fix saltIsActiveTr setting for IdealGas eosType (eosType is 6 character long);
1851      - to refine CS-grid check, add logical flag "hasWetCSCorners": true if using
1852        Cubed-Sphere Exch with CS-corners inside the domain;
1853        make new S/R INI_GLOBAL_DOMAIN from code in ini_linear_phisurf.F to calculate
1854        globalArea and to set hasWetCSCorners.
1855      - add warning if usingCurvilinearGrid and momAdvection in flux-form (missing
1856        metric terms); stop if hasWetCSCorners=T and momAdvection in flux-form.
1857      - re-activate the stop if useCDscheme and hasWetCSCorners=T (previously if
1858        useCDscheme and useCubedSphereExchange).
1859    o pkg/seaice/seaice_growth.F :
1860      - compute the SEAICE_DISABLE_HEATCONSFIX term accordingly
1861        for the (.NOT.useRealFreshWaterFlux).OR.(nonlinFreeSurf.EQ.0)
1862        when the previous code was not correct.
1863      - in all cases diagnoze the boundary condition mismatch to SIaaflux
1864      - in the case of useRealFreshWaterFlux.AND.(nonlinFreeSurf.GT.0) add
1865        that term to QNET (essentially to set the melt/freeze water to 0degC).
1866        when SEAICEheatConsFix is true, so that the ocean+ice budget heat is closed.
1867    o verification/global_ocean.cs32x15/input.seaice :
1868      - add SEAICEheatConsFix in data.seaice, ensuring closed ocean+ice heat budget.
1869      - add diagnostics (commented out) for budget test using my matlab codes (gcmfaces).
1870      - update results (output.seaice.txt) accordingly.
1871    o verification/lab_sea/input/data.seaice :
1872      - remove SEAICEheatConsFix, which is now be tested
1873        in global_ocean.cs32x15. The presently coded fix
1874        is only consistent with real fresh water + nlfs.
1875      - update results (output.txt) accordingly.
1876    o pkg/salt_plume: added diagnotic for salt tendency (oceSPtnd).
1877    o AD_CONFIG.h file:
1878      - in genmake2: remove "#undef ALLOW_ECCO_OPTIMIZATION" from AD_CONFIG.h;
1879      - remove #include "AD_CONFIG.h" from all included OPTIONS files and
1880        add it explicitly in each fortran src file where it is needed.
1881        motivation: header file AD_CONFIG.h is generated/modified after "make depend"
1882        thus introducing potentially wrong dependency; therefore, better to include
1883        it only where it's really needed, and after any other included OPTIONS file
1884        (less tempting to bring conditional includes according to ALLOW_ADJOINT_RUN
1885        or ALLOW_TANGENTLINEAR_RUN).
1886    
1887    checkpoint63p (2012/07/06)
1888    o pkg/autodiff:
1889      - rename S/R INI_AUTODIFF to AUTODIFF_INIT_VARIA ;
1890      - create new header file "AUTODIFF_PARAMS.h" for pkg/autodiff parameters
1891        which are now read from new parameter file "data.autodiff" (inAdExact
1892        previously in "data", use{KPP/GMRedi/SEAICE}inAdMode previously in data.pkg)
1893      - add file "data.autodiff" in all verification/*/input_ad/ directories.
1894      - add run-time parameter to turn On/Off SEAICEuseFREEDRIFT in adjoint/forward
1895        mode (used in global_ocean.cs32x15.seaice_dynmix test exp.)
1896    o verification/tutorial_tracer_adjsens/
1897      - add extra sub-verification which uses "SOM" advection scheme
1898        (2nd Order-Moment Advection Scheme, Prather Limiter) with
1899          #define GAD_ALLOW_TS_SOM_ADV in GAD_OPTIONS.h
1900        and in data:
1901          multiDimAdvection=.TRUE.,
1902          tempAdvScheme=81,
1903          saltAdvScheme=81,
1904    o model/src:
1905      - introduce ALLOW_BALANCE_RELAX which allow the removal
1906       of the global mean of relaxation terms by setting
1907       balanceThetaClimRelax and balanceSaltClimRelax
1908      - disable balanceEmPmR and balanceQnet in the case when useSeaice.
1909       This case is now treated appropriately in seaice_growth.F
1910    o pkg/seaice:
1911      - do balanceEmPmR and balanceQnet based on the net fluxes
1912        (SItflux) that enter the ocean+ice system rather than QNET
1913        and EMPMR. Works best in real fresh water.
1914      - SIatmFW, SIatmQnet, and SItflux computations had to be moved
1915        out of the diagnotics bloc, and stored in global arrays.
1916    
1917    checkpoint63o (2012/06/29)
1918    o vertical mixing schemes:
1919      - remove unused S/R CALC_BUOYANCY (left from branch-atmos merging)
1920      - replace computation of density (in Function STATE1, opps_calc.F) by a call
1921        to S/R FIND_RHO_SCALAR
1922      - pass sigmaR to S/R PP81_CALC, MY82_CALC (but not yet used) and to GGL90_CALC
1923        and use it for N^2 calculation in ggl90_calc.F (save 2 density computations);
1924        affects output (vermix.ggl90) at truncation level.
1925    o testreport:
1926      - change adjustment of SIZE.h for mpi+mth testing: preserve enough tiles
1927        (nSx,nSy) for the number of threads (from eedata.mth)
1928    o model/src:
1929      - remove 2nd set of calls at the top of initialise_varia.F (Adjoint part)
1930        related to Non_Lin Free-Surf or Bottom-Control (but not longer necessary).
1931    o verification/tutorial_tracer_adjsens/
1932      - compile with ALLOW_CG2D_NSA
1933      - run with nonlinFreeSurf=3
1934      - update reference output_adm.txt
1935    o tools/genmake2:
1936      - add "-DHAVE_NETCDF" to the DEFINES list when NetCDF is available ;
1937        refine usePROFILES switching off (only when NetCDF is not available).
1938    o verification (atmospheric set-up):
1939      - change eosType='IDEALGAS' to eosType='IDEALG' to match variable declaration
1940    o pkg/profiles : refine profiles and files handling.
1941    o model/src and pkg/ecco : introduce run-time switch usePROFILES.
1942    o model/src/the_main_loop.F, forward_step.F and pkg/exf/EXF_OPTIONS.h :
1943      - changes to use model/src/the_main_loop.F rather than the ecco version
1944        in ecco type adjoint runs.
1945    o model/src:
1946      - move computation of recip of grid distance & area from INI_MASKS_ETC to INI_GRID
1947      - move setting of h0Fac[C,W,S] from INI_LINEAR_PHISURF to INI_MASKS_ETC
1948      - update_masks_etc.F: rename SMOOTH*_R4,R8 function to the corresponding type (RS,RL)
1949    o model/src:
1950      - fix S/R UPDATE_CG2D for ALLOW_DEPTH_CONTROL case (was empty before);
1951        update output of test experiment bottom_ctrl_5x5.
1952    o pkg/generic_advdiff:
1953      - implement vertical bi-harmonic diffusion (for now, only for T & S and
1954        only explicitly).
1955    o verification/bottom_ctrl_5x5/
1956      update reference output (results changed quite some time ago,
1957      not sure when; but new reference results look ok in terms of grdchk)
1958    o verification/1D_ocean_ice_column/
1959      For verification purposes, the exact adjoint rather than an approx.
1960      should be used (e.g., to comare against F.D. or TLM).
1961      removed autodiff_inadmode*_ad.F routines in code_ad/
1962      Update results/ accordingly.
1963    o pkg/cal:
1964      - change cal_getdate.F so that output date is function of input time only
1965        (less ambiguous, not mixed up with input iteration number).
1966      - fix calendarDumps for non-zero phase-lag (S/R CAL_TIME2DUMP).
1967    o pkg/diagnostics:
1968      - implement calendarDumps also for stats-diags
1969      - implement calendarDumps also for snap-shot output (negative freq)
1970      - for now, ignores calendarDumps if non-zero phase-lag.
1971    
1972    checkpoint63n (2012/06/04)
1973    o model/src:
1974      - recompute rSurfW & S to ensure consistent column thickness (needed for rStar)
1975        between Sum_k(hFac*drF) and rSurf-rLow, for now only when using pkg/shelfice;
1976      - use h0FacC, W & S to compute hFac_surfC, W & S in calc_surf_dr.F (more
1977        similar to calc_r_star.F); update results of experiment internal_wave and
1978        tutorial_global_oce_in_p (affected @ truncation level).
1979    o pkg/shelfice:
1980      - add parameterisation of advective-diffusive flux into the ice shelf
1981        according to Holland and Jenkins (1999), eq.22-33, as suggested by Jan De Ryd
1982      - simply eps3/3a computation
1983    o eesupp:
1984     - add new CPP option (DISCONNECTED_TILES) to disconnect tiles (no exchange
1985       between tiles, just fill-in edges assuming locally periodic subdomain) and
1986       add corresponding exchange subroutines (EXCH0);
1987     - new CG-solver version (_EX0) for disconnected-tiles special case.
1988    o model/src (CG-solvers):
1989     - modify Single-Reduction version (CG2D_SR) in case cg2dMaxIters is reached
1990       (similar final residual output and max-Iter number as with standard version);
1991     - allows to store and use lowest-residual solution (standard & _SR versions);
1992     - cleaning up (remove old, commented out code, LETS_MAKE_JAM ...).
1993     - by default, also compile CG2D_SR version (define ALLOW_SRCG in CPP_OPTIONS.h)
1994    o eesup/src:
1995     - global_vec_sum.F cleaning: add a BARRIER ; update comments ; remove ndef
1996       ALWAYS_USE_MPI (no longer needed after fixing usingMPI settings - March 2012)
1997    o pkg/salt_plume added to lab_sea/input_ad.noseaicedyn
1998    
1999    checkpoint63m (2012/04/27)
2000    o pkg/shelfice:
2001     - account for partical cells in surface level below ice-shelf for hydrostatic
2002       pressure calculion (set uniformFreeSurfLev to F); update isomip experiments.
2003    o ad test experiments:
2004     - update and rename to "ad_optfile.local" local AD-optfile specific to a
2005       particular adjoint verification experiment (in verification/*/code_ad/)
2006    o pkg/seaice & pkg/exf:
2007     - Part two of ECCO-CLIVAR code merges.
2008       Completes merge of seaice area relax. code.
2009       Requires unified CPP option EXF_ALLOW_SEAICE_RELAX
2010       to be set in EXF_OPTIONS.h since this pkg controls its I/O
2011       (and avoids second CPP option in SEAICE_OPTIONS.h)
2012     - change default value of costIceStart & costIceEnd to a valid date.
2013     - add snowPrecip to HSNOW in seaice_growth
2014    o pkg/ptracers:
2015     - move ptracers summary and setup check into separated S/R ; add a check for
2016       valid PTRACERS_Iter0 value (error+stop or just warning).
2017    o pkg/cal (+ pkg/ecco):
2018     - avoid calling a S/R with 2 times the same arg (FWD: unless both are only used
2019       as input; and for AD, unless both are not differentiable (e.g., k index)).
2020    o model/src:
2021     - define internal flag "uniformFreeSurfLev" (=T when free-surface level-index
2022       is everywhere k=1) to speed-up some calculations (by pass kSurf reference);
2023       temporary set to usingZCoords value (to be changed to F when using shelfice).
2024     - hydrostatic pressure: implement partial cell near the surface also for
2025       Z-coordinates (for the case where uniformFreeSurfLev=F); replace test on
2026       usingZCoords with test on uniformFreeSurfLev where needed (in NonHyd code).
2027    o pkg/ctrl/ctrl_init.F:
2028     - add a formal parameter to s/r ctrl_init_rec to print
2029       xx_$(ctrl_valiable)_file for easier debugging
2030     - move call of cal_* routines into the if-block where they are really
2031       needed so that xx_$(ctrl_variable)_period can be 0 or -12 without having
2032       to specify a startdate
2033    o pkg/seaice:
2034     - update comments in SEAICE_OPTIONS.h (+ similar update of lab_sea/code and
2035       global_ocean.cs32x15/code versions).
2036     - turn on seaice Multi-category (in data.seaice, SEAICE_multDim=7) for
2037       verification experiment global_ocean.cs32x15.seaice and update results.
2038    o pkg/exf:
2039     - new S/R EXF_GETFIELD_START to return starting-time of a forcing field
2040       (according to useExfYearlyFields).
2041    o pkg/cal:
2042     - move calendar setting & summary (previously in cal_readparams.F) into new
2043       S/R CAL_INIT_FIXED to be called later in the initialisation process, once
2044       length of the simulation is set (after SET_PARMS call); This is an attempt
2045       to fix Pb when, e.g.: pkg/longstep, modifies the length of the run.
2046     - For safety: keep a record of pkg/cal parameter settings status
2047               to allow to STOP if one pkg/cal S/R is called too early.
2048     - add a stop in all basic pkg/cal subroutines if called before setting is done.
2049     - modify cal_getdate.F: stop when nothing was returned;
2050       if called with myIter=-1, simply retrun modelBaseDate (1,2 = startDate_1,_2);
2051       this allows to remove "cal.h" from seaice_read_parms.F & init_mnc_vars.F.
2052    
2053    checkpoint63l (2012/04/04)
2054    o pkg/bbl:
2055      - fix call to FIND_RHO_2D in bbl_calc_rho.F (case multi-tiles per proc);
2056        update global_with_exf output.yearly.txt file.
2057    o pkg/cal:
2058      - start to clean-up cal_set.F ; fix for the case where baseTime is non-zero.
2059      - remove 2 unsused and very short (1 line only) functions ;
2060      - remove unsused subroutines from AD-Diff list.
2061    o model/src:
2062      - start to implement clean wait to stop in initialization S/R (config_check.F,
2063         packages_check.F, ini_parms.F and pkg/obcs/obcs_check.F + pkg/mypackage)
2064    o folowing PRINT_MESSAGE changes:
2065      - remove reminder multiple print to the same file (STDOUT) when multi-threads.
2066  o pkg/bbl:  o pkg/bbl:
2067    - modification so it can work with z*    - modification so it can work with z*
2068    - replace deltaT with dTtracerLev(k) for asynchronous time stepping    - replace deltaT with dTtracerLev(k) for asynchronous time stepping

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