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revision 1.1742 by dimitri, Thu Sep 20 19:04:46 2012 UTC revision 1.2024 by heimbach, Tue Jul 15 23:07:57 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 OpenAD
8      - clean up code_oad/ directories somewhat by moving files
9        dontCompile, dontTransform, keepOriginal to OAD_support/
10    o model/src:
11      - using MOM fluxform and Non-Lin Free-Surf with momDissip_In_AB=F
12        (not currently tested): add dissipation terms before NLFS rescaling of
13        tendencies (previously done after).
14    o pkg/diagnostics:
15      - write stats-diags in ascii file with more digits (same as in monitor).
16    o pkg/down_slope:
17      - drop the bi,bj dimension of argument recip_hFac in S/R DWNSLP_APPLY; with
18        NLFS (not tested), use new recip_hFac value in order to conserve tracer.
19    o model/src:
20      - new file "apply_forcing.F" containing all the code previously in
21        external_forcing.F, but with new argument list: pass, as new argument,
22        the current level tendency array to update (instead of a direct update
23        of the common bloc array). Change the corresponding calls.
24      - add CPP option USE_OLD_EXTERNAL_FORCING (default is undef) to use
25        EXTERNAL_FORCING_U,V,T,S subroutines (for backward compatibility).
26    o pkg/seaice/seaice_lsr, a little bit of clean up
27      - rearrange some code blocks, so that now all calculations for
28        setting up the right-hand-sides done within one single block
29        (I find that easier to read and understand)
30      - rearrange freedrift-code to reduce the number of ifdefs
31      - adjust some indentations and comments
32    
33    checkpoint64z (2014/07/10)
34    o model/src and several pkgs:
35      - change argument list of all S/R called from external_forcing.F and
36        called from ptracers_forcing.F (renamed to ptracers_apply_forcing.F)
37        to pass, as argument, the current level tendency array to update
38        (instead of a direct update of the common bloc array).
39      - change also (in the same way) argument list of PTRACERS_APPLY_FORCING;
40      - rename taueddy_external_forcing.f to taueddy_tendency_apply.F
41    o pkg/seaice/seaice_lsr.F
42      - always initialize local arrays in seaice_lsr_tridiagu/v
43      - add more local tapes to seaice_lsr_tridiagu/v
44      - move storing u/vice(:,:,bi,bj) out of seaice_lsr_tridiagu/v, but
45        keep it in bi/bj loop; this seems to be essential
46      - gradients are still wrong but only by 4-7 orders of magnitude
47        instead of 15 orders of magnitude, lab_sea improves a little
48    o pkg/seaice
49      - (pkg/autodiff) remove storing/restoring of seaiceMaskU/V that
50        generates unnecessary code in seaice_lsr_ad
51      - add more store directives in seaice_lsr to avoid unnecessary code
52        in seaice_lsr_ad
53      - exclude some residual computations in seaice_lsr when
54        ALLOW_AUTODIFF_TAMC is defined in order to avoid unnecessary code
55        in seaice_lsr_ad
56      - add more storing, a new tape (model/src/the_main_loop.F) and
57        another key for SEAICE_LSR_VECTORIZE_ZEBRA (the local keys ilockey
58        and klockey should be checked by a specialist)
59      - modify ( define SEAICE_VECTORIZE_LSR and SEAICE_LSR_ADJOINT_ITER )
60        and update lab_sea after previous changes in pkg/seaice below
61    o pkg/autodiff:
62      - introduce useSmoothCorrel2DinAdMode, SEAICEapproxLevInAd, and
63        viscFacInAd : run time parameters allowing for adjoint switches
64        note : logic for useSmoothCorrel2DinAdMode is in ctrl_readparms.F
65    o pkg/ecco:
66      - introduce cost_gencost_boxmean.F that computes a box mean
67        temperature (for use in adjoint sensitivity studies).
68    o model/src/set_defaults.F : initialize viscFacAdj to 1.
69    o pkg/mom_common/mom_calc_visc.F:
70      - ifdef ALLOW_AUTODIFF then include viscFacAdj factor.
71    o pkg/seaice/seaice_summary.F:
72      - statement for SEAICEadjMODE now in autodiff_readparms.F
73    o pkg/seaice:
74      - remove some store directives and add new ones in an effort to get
75        finally rid off the recomputation warnings. This is successful
76        when SEAICE_VECTORIZE_LSR ***and*** SEAICE_LSR_ADJOINT_ITER are
77        defined (i.e. no extensive recomputation warnings left), but there
78        are still too many recomputations on the solver iteration level
79      - define SEAICE_VECTORISZE_LSR in offline_exf_seaice/code_ad/SEAICE_OPTIONS.h
80      - move definition of MPSEUDOTIMESTEPS into TAMC-block in
81        SEAICE_SIZE.h
82      - add a store directive in S/R seaice_calc_viscosities
83    o pkg/seaice (ITD code):
84      - fix definition of Hlimit for multi-threaded case
85      - use double precision arithmetic to compute Hlimit: this affects results;
86        update output of experiment seaice_itd.
87    o replace content of verification/seaice_itd
88      - instead of a 1D column use the configuration of offline_exf_seaice
89        to test the ice thickness distribution code with ridging
90      - this is a first shot at this experiment
91      - change of some defaults of ridging parameters SEAICEhStar (from
92        100 to 25) and SEAICEmuRidging (from 5 to 3) in seaice_readparms.F
93        and lot of new comments.
94    
95    checkpoint64y (2014/06/20)
96    o pkg/seaice/seaice_reg_ridge.F:
97      - modify the regularization of very small volumes of ice; only check
98        total volume HEFF, and do not apply correction to individual ice
99        classes because that leads to funny patterns in the heat and fw-fluxes
100        into the ocean. Adjust seaice_itd/results/output.txt
101      - replace nITD by SEAICE_multDim in loop-ranges
102    o pkg/exf:
103      - add code to process the case field period = -12. with UV interpolation.
104      - move debug print (formerly active when exf_verbose=T) from EXF_getFFieldRec
105        into S/R that calls it (i.e., exf_set_gen.F, exf_set_uv.F & obcs_exf_load.F)
106    o verification/global_with_exf:
107      - switch all fields period to -12. (was previously untested) in input/data.exf
108        (but keep secondary test ".yearly" unchanged); update the reference output.
109    o pkg/cal:
110      - new calendar type "noLeapYear" for 365 days calendar without any leap year.
111    o pkg/exf:
112      - new integer parameter "exf_debugLev" (default set to main model debugLevel)
113        to replace logical switch "exf_verbose"
114      - report in STDOUT when loading a new record (if exf_debugLev >= 3)
115    o pkg/sbo:
116      - update from Katherine Quinn: evaluate mass directly from density and SSH
117        (budget using Finite Volume method) instead of from bottom pressure.
118      - allow testreport to collect few selected SBO output ; tested in exp.
119        global_ocean.90x40x15 (after updating the results, to include SBO output).
120      - fix some multi-threading issues (in output part).
121    o model/src & most packages:
122      - always call {PKG}_READPARMS even if corresponding use{PKG}=F;
123      - in {PKG}_READPARMS, in case use{PKG}=F: add a call to new S/R
124        PACKAGES_UNUSED_MSG to print a weak warning when parameter file
125        "data.{pkg}" exist ; and leave the S/R (return) just after.
126      - more standard LAND pkg interface (land_init_fixed.F, land_check.F).
127        + call LAND_READPARMS from packages_readparms.F
128    o pkg/seaice:
129      - remove code that resets useThSice in S/R seaice_readparms and
130        replace it by a warning in S/R seaice_check
131      - remove parameter MULTDIM, replace with nITD and runtime
132        parameter SEAICE_multDim (still hard-wired to nITD if
133        SEAICE_ITD is defined)
134    
135    checkpoint64x (2014/05/24)
136    o verification/lab_sea:
137      - update adjoint and TLM output following changes to pkg/salt_plume
138      - un-do the update after putting back local recip_Cp in few places.
139    o pkg/salt_plume: modifications by An Nguyen:
140      - add capability to do brine rejection (salt-plume) as function of
141        volume+tracers (instead of only salinity tracer).
142      - conserve volume by exchanging volume from each kLev to above to
143        accommodate in-coming brine volume
144      - store surface and klev exchanged fraction + volume in 4 new 3-d arrays
145      - switch KPP surf buoyancy due to brine forcing to 3-d
146        (3 more 3-d arrays, 2 for SPforcing[T,S], 1 for boplume)
147      - add salt_plume_volfrac, salt_plume_apply, salt_plume_tendency_apply_t
148      - unrelatedly, also add ad-hoc capability to vary salt_plume scheme
149        in East/West Arctic.
150    o pkg/sbo:
151      - incorporate modifications from Katherine Quinn to enable the use of sbo
152        pkg in ECCO-v4 set-up ; remove SBO-TimeAve output ; add monitor-like
153        output for future testreport verification (unfinished).
154    o pkg/atm_phys:
155      - change diagnostics (AtPh_Trf & AtPh_Qrf) of DARGAN_BETTSMILLER S/R:
156        skip the reseting of t_ref & q_ref to initial t & q ; this preserve the
157        output of S/R CAPECALCNEW (Parcel temp & q) for diagnostics.
158    o pkg/seaice
159      seaice_calc_ice_strength.F: modify expression to avoid divisions
160        (affects truncation)
161      seaice_do_ridging.F: clean up the insectarium
162      - fix a bug that was compensated by areaScaling (-> remove areaScaling code)
163      - added SEAICEsnowFracRidge to redistributed snow (2nd bug)
164      - set closing/openingRate to zero where no extra iteration is need (3rd bug)
165      - add some debugging information and error messages (warnings)
166    o model/src: modifications relatd to atmosphere p*:
167      - Switch to more accurate p* coordinate slope term (calc_grad_phi_hyd.F)
168      - With p* or Sigma-P, use constant reference Pot.Temp (thetaConst) instead
169        of vertical profile tRef in geopotential background and anomaly.
170      - Acount for true p* correction in theta <-> T conversion in pkg/aim_v23
171        and pkg/atm_phys.
172      - Update FWD output of experiments: aim.5l_cs (x2), fizhi-cs-32x32x40,
173        fizhi-cs-aqualev20, fizhi-gridalt-hs, tutorial_held_suarez_cs, cpl_aim+ocn.
174    o pkg/seaice: fix a bug in seaice_prepare_ridging.F, forgot a sqrt
175    o pkg/ptracers: compute ptracer source/sink due to linear free surface.
176        not used right now, but can be used in BGC packages to fix conservation.
177    o pkg/dic, pkg/gchem: move tracer_meanarea to gchem, so it can be used by
178        other packages too.
179    o pkg/seaice/seaice_calc_ice_strength.F: replace SEAICE_rhoSnow by
180        SEAICE_rhoIce in the Rothrock (1975)-type strength calculations (bug fix)
181    o model/src:
182      - since we have several heat capacity (even in model/src), define "recip_Cp"
183        as local variable (no longer in common block) to avoid any confusion.
184      - add thetaConst in PARAMS.h (to be used with pStar or sigma-P coords).
185    o pkg/exf:
186      - from Jeff Scott: add option (#define EXF_CALC_ATMRHO) to calculate local
187        air density as function of air Temp, Humidity and atm pressure.
188    
189    checkpoint64w (2014/05/02)
190    o verification:
191      - update output_adm.txt files for experiment global_ocean.cs32x15 (seaice &
192        seaice_dynmix) and lab_sea (primary test & noseaicedyn): moving/changing
193        code from seaice_growth.F & seaice_advdiff.F to new ridging routines
194        seaice_reg_ridge.F seaice_do_ridging.F affects AD gradient
195        (down to 8-7 matching digits for global_ocean and 5-6 for lab_sea).
196    o model/src: for atmosphere in p* coords:
197      - store factor rStarFacC**atm_kappa (= pStarFacK) in common block
198      - implement more accurate p* coordinate slope term (in calc_grad_phi_hyd.F),
199        but not yet activated.
200    o pkg/seaice: fix restart problem for ITD with new ice strength parameterisation:
201      - move computation of opnWtrFrac = 1-AREA to before computing ice strength
202      - this changes the results (but not for any verification experiment, because
203        none tests this), but avoids having an extra field in the restart files
204    o pkg/seaice: remove global variable TICE (not needed)
205      - replace by TICES or local variable where necessary (cost_seaice_test,
206        seaice_diagnostics_state)
207      - move copying TICE to TICES from seaice_check_pickup to seaice_read_pickup
208      - use specific read/write routines for reading and writing individual leves
209        of a multilevel field
210    o pkg/ctrl & model/inc:
211      - move additional anomaly fields of control vars (related to options:
212         ALLOW_KAPGM_CONTROL, ALLOW_KAPREDI_CONTROL and ALLOW_BOTTOMDRAG_CONTROL)
213        from DYNVARS.h into new header file: CTRL_FIELDS.h
214    o pkg/seaice: some small modifications to the ridging code
215      - make fw2ObyRidge a global variable and add the freshwater flux to
216        seaice_growth
217      - pass actual thickness from seaice_prepare_ridging, so that it is
218        computed only in one place and compute it in the same way as in
219        seaice_growth
220      - initialise more fields in seaice_do_ridging that where cause floating
221        point exceptions over land
222    o pkg/seaice: preparations for ridging code and first real ridging code
223      - move most of "PART 1" of S/R seaice_growth into a new and separate
224        S/R seaice_reg_ridge that will both regularize the state variable after
225        advection call the actual ridging routine;
226      - requires to make 5 fields global fields: d_HEFFbyNEG,d_HSNWbyNEG,
227        d_AREAbyRLX,d_HEFFbyRLX,saltFluxAdjust;
228      - remove ridging code from seaice_advdiff
229      - clean up remaining part 1 of seaice_growth in an attempt to make it
230        more readable (this is probably subjective)
231      - call seaice_itd_redist once in the initialisation phase to have the initial
232        conditions in the correct category
233      - finally: add new ridging routine for ITD code
234    
235    checkpoint64v (2014/04/11)
236    o pkg/ecco:
237      - add runtime parameters mdt[start,end]date[1,2]
238      - rename variable "tpmean" as "mdt" and "topexmeanfile" as "mdtdatfile"
239    o pkg/seaice:
240      - make deltaC a global variable, so that it can be used in ridging code
241      - first step towards ridging: introduce new routines that compute
242        ice strength based on ridging parameters
243      - add diagnostic for HSNOWITD
244      - add opnWtrFrac as a global variable (required for ridging scheme)
245    o pkg/salt_plume + pkg/seaice/seaice_growth.F
246      - add SALT_PLUME_IN_LEADS flag to activate pkg/salt_plume only when ice
247        AREA exceeds a threshold (code contributed by I.Fenty in 2011)
248    o verification/hs94.1x64x5:
249      - leave ALLOW_AUTODIFF_TAMC undefined in code_oad/AUTODIFF_OPTIONS.h
250      - do not use ECCO_CPPOPTIONS.h anymore for TAF & OpenAD Adjoint tests.
251    o autodiff:
252      - Start to include explicitly AUTODIFF_OPTIONS.h, COST_OPTIONS.h,
253        and CTRL_OPTIONS.h in src files (to enable to skip the ECCO_CPPOPTIONS.h)
254        For now, only in pkgs used in verification/hs94.1x64x5.
255      - Replace ALLOW_AUTODIFF_TAMC by ALLOW_AUTODIFF (except for tape/storage
256        which are specific to TAF/TAMC).
257      - Replace ALLOW_AUTODIFF_OPENAD by ALLOW_OPENAD:
258        since ALLOW_OPENAD is defined in PACKAGES_CONFIG.h (any time pkg/openad
259        is compiled), this simplifies/reduces which *_OPTIONS.h file to include.
260      - OpenAD: change Makefile to generate the appropriate AD_CONFIG.h when
261        building mitgcmuv_ad (make adAll).
262    o pkg/ecco:
263      - cost_gencost_seaicev4.F:
264         reformulate proxy cost as function of sst and local param SEAICE_freeze
265         change cost names from siv4-[sst,vol] to siv4-[deconc,exconc]
266      - add stop statement if old names siv4-[sst,vol] are used
267      - add snapshots + cost reports for atmospheric longwave
268      - remove factor 0.1 in front of wtau[u,v]
269      - replace never used flag ALLOW_TMI_COST_CONTRIBUTION with
270         ALLOW_TMI_SST_COST_CONTRIBUTION
271    o pkg/atm_phys:
272      - add some diagnostics for Short-wave and for convection S/R.
273    o pkg/seaice/seaice_growth:
274      - fix a bug in the lateral melt parameterization for SEAICE_ITD
275        in seaice_growth; tempFrz needs to be computed inside the i/j-loop
276      - rearrange loop order for better vector code in the same code block
277      - rewrite the floeDiameter formula to have fewer divisions
278      -  (miraculously) none of this changes the results of seaice_itd
279    o pkg/smooth:
280      - move param smooth2Ddiffnbt to pkg/ecco
281    o pkg/salt_plume:
282      - salt_plume_frac.F:
283         clean up local param names
284         reformulate (1-frac) to frac; original 1-frac was based on swfrac code
285    o pkg/rw:
286      - add RS version of S/R READ_MFLDS_LEV.
287    o pkg/streamice:
288      - fix the restart test by writing/reading pickup_streamice files.
289    o pkg/seaice:
290      - refine checks for jfnk-related parameters
291      - comment out if statement with SEAICEuseIMEX parameter as long as there
292        is no IMEX code to avoid confusion and surprises
293    
294    checkpoint64u (2014/03/07)
295    o verification/MLAdjust:
296      - rename secondary test suffix:
297         1.leith  -> A4FlxF  + switch to flux-form & add side-drag
298         0.leithD -> AhFlxF  + switch to flux-form
299         0.smag   -> AhVrDv  (use Vorticity-Div. visc form) + add side-drag
300         0.leith  -> AhStTn  (use Strain-Tension visc form) + add side-drag
301    o pkg/mom_vecinv:
302      - remove unused arguments from S/R MOM_VI_HDISSIP & MOM_HDISSIP (as it used
303        to be before mom_calc_visc.F)
304      - skip the call to MOM_CALC_TENSION & MOM_CALC_STRAIN if not needed.
305      - add 2nd copy of vort3 & strain that knows about lateral BC (free/no slip):
306        this is simpler for the adjoint and for diagnostics.
307    o model/src + pkg/momentum:
308      - add input files for  2-D additional Western and Southern cell-edge wall
309         (e.g., to add "thin-wall" where it is =1).
310      - fix sideDrag option for thin-walls with Non-Lin Free-Surf
311        using 2nd hFacZ that is computed from initial (fix domain) hFac
312      - known limitations of thin wall implementation: not yet coded for sigma
313        coords; not working with CD-scheme neither.
314    o pkg/seaice:
315      - rename recently introduced parameters from (wrong name) AB to
316        BDF (backward difference time discretisation)
317      - retire runtime parameters SEAICEuseAB2, SEAICE_abEps
318    o tools/adjoint_options:
319      - remove setting of "OPENAD=true" (now set by command line "genmake2 -oad")
320    
321    checkpoint64t (2014/02/01)
322    o pkg/ecco
323      - add compile flag ALLOW_GENCOST_TIMEVARY_WEIGHT in ECCO_OPTIONS.h and
324        runtime logical flag gencost_timevaryweight to read daily sea-ice sigma
325      - replace hard-coded record number and period which only work for monthly
326        with read-in runtime param that works for other periods (month,day,year)
327    o pkg/thsice
328      - corrected store directive fixes thsice adjoint gradient checks
329    o genmake2 & testreport:
330      - add genmake2 option "-oad" to generate a Makefile for OpenAD built and
331        in this case, use tools/adjoint_options/adjoint_oad as default AD optfile.
332        Update testreport accordingly. No need to set "export OPENAD=true"
333        in adjoint_options/adjoint_oad anymore (will be removed later).
334    o pkg/shelfice:
335      - put T & S shelfice forcing into model surfaceForcing_T,_S (for now,
336        only if SHELFICEboundaryLayer=F); Change model/src/external_forcing.F
337        so that surface forcing applies to k=kSurf if using pkg/shelfice.
338    o pkg/ctrl, pkg/grdchk, pkg/ecco:
339      - Changes to make GENARR more modular (i.e. invisible if not used)
340    o model/src/temp_integrate.F and salt_integrate.F
341      - re-include store directives that were removed on Dec 27th.
342    o model/src/external_forcing_surf.F
343      - add storage directives for EmPmR and PmEpR to avoid recomputation of
344        seaice_model in the adjoint that is problematic when seaice_model is
345        turned off in the adjoint. The resolved issue dated back to July when
346        EXTERNAL_FORCING_SURF call was moved.
347        Update global_ocean.cs32x15/*/output_adm.seaice_dynmix.txt accordingly.
348    o pkg/exf/exf_check.F
349      - fix a small bug again (originally found by Wentao Liu, now found again)
350      - streamline error output
351    o pkg/streamice and aim_v23:
352      - replace a few "_EXCH_XY_RL (" with "_EXCH_XY_RL(", so that
353        Apple's /usr/bin/cpp knows what to do:
354        Apple LLVM version 5.0 (clang-500.2.79) (based on LLVM 3.3svn)
355        Target: x86_64-apple-darwin13.0.0
356    
357    checkpoint64s (2014/01/05)
358    o tools/adjoint_options:
359      - switch to fastopt.net TAF server (instead of default fastopt.de) for
360        AD optfiles adjoint_diva & adjoint_f95 (similar to adjoint_default).
361    o model/src:
362      - remove some unnecessary TAF storage directives in forward_step.F and
363        in dynamics.F (note: not always removed by TAF, e.g., double storage
364        of kappaRU,kappaRV in former version of dynamics.F).
365    o model/src & pkg/ptracers:
366      - call directly GAD_IMPLICIT_R & IMPLDIFF + DWNSLP_APPLY from temp_integrate.F
367        salt_integrate.F and ptracers_integrate.F (instead of from thermodynamics.F)
368        and remove ptracers_dwnslp_apply.F & ptracers_implicit.F
369      - call MATRIX_STORE_TENDENCY_EXP for each tracer (in ptracers_integrate.F)
370      - add fZon & fMer as output argument of S/R GAD_CALC_RHS.
371      - update TAF AD-output of experiments global_ocean.90x40x15 (13 for AD-grad).
372    o useSingleCpuInput separates single-CPU input from single-CPU output;
373        for now only implemented for in exf_interp_read.F
374    o verification/advect_xy:
375      - fix missing EXCH call in local version of ini_salt.F and update output.
376    o momentum diagnostics:
377      - fix which deltaT is used in Total-Tendency diagnostics.
378      - fix typo in diagnostics for momentum tendency from AB.
379    o pkg/seaice/seaice_lsr.F: fix an initialisation bug for the
380        SEAICE_VECTORIZE_LSR_ZEBRA option that lead to NaNs on a NEC-SX8
381    
382    checkpoint64r (2013/12/08)
383    o verification/*/results:
384      - Update reference output of experiments that were passing with just 13 digits
385         (make it easier to detect future changes in results)
386    o model/src & pkg/ptracers:
387      - move calls to GAD_ADVECTION (Multi-Dim advection) from thermodynamics.F to
388        inside temp_integrate.F and salt_integrate.F and from ptracers_advection.F
389        to inside ptracers_integrate.F ; remove ptracers_advection.F
390    o coupling interface pkgs:
391        [atm_compon_interf, ocn_compon_interf & atm_ocn_coupler]
392      - change the config check to test the agreement of Ocean Depth
393        with ATM land/sea mask (instead of ATM orography);
394      - send to coupler the number of coupler time-steps to do for this run:
395        this allows to check for consistency and don't need anymore to be
396        specified in parameter file "data";
397      in coupler:
398      - check consistency of RunOff map versus Ocean Depth and ATM land/sea mask.
399      - improve report to log-file of config setting (pass log-file unit to few S/R)
400    o pkg/compon_communic:
401      - add coupling send/receive for non-tiled integer vector;
402      - add S/R to check and stop if any proc has an error (similar to
403        eesupp/src/stop_if_error.F but single thread and across Comm_World).
404    o pkg/exch2:
405      - in exch2*_get_rx[1,2]: use new list "W2_tileIndex" to replace search
406        through list of all tiles my proc owns.
407    o model/src:
408      - AUTODIFF only: in calc_adv_flow.F, recompute rTransKp (instead of copying
409        from rTrans) to simplify dependencies (no need to store rTrans anymore in
410        calling S/R); this affects AD results at machine truncation level:
411        update AD-output (TAF) of experiments: 1D_ocean_ice_column,
412        bottom_ctrl_5x5 & obcs_ctrl (12 digits for AD grad, same FWD grad).
413    o tools/build_options:
414      - simplify Warnings options (-ieee & -devel cases) in linux_amd64_gfortran
415    o coupling interface pkgs:
416        [compon_communic, atm_compon_interf & ocn_compon_interf]
417      - move declaration of local array "ibuf" out of header file "CPLR_SIG.h"
418        to each S/R that needs it; remove un-used variables.
419      - change component tile registration (cpl_register.F in both compon_interf
420        and mitcomponent_tile_register.F) to pass the full list of tiles
421        information (including bi,bj) in 1 vector (instead of in a bi,bj matrix).
422      - with pkg/exch2: adopt the same convention used for I/O to define mapping
423        towards coupler global array (unless W2_useE2ioLayOut=F):
424         a) can now use different tiling between atm & ocn comp.
425         b) no needs to modify the run-Off map when changing tiling (was needed
426            even if using the same tiling between atm & ocn).
427         c) will allow to run with blank-tiles in 1 component (e.g., for ocean
428            full land tiles); not yet tested.
429      - check for valid mapping from comp. tile to coupler global array
430      - improve report of tile registration results to log file.
431    o pkg/exch2:
432      - in eesupp/src/eeboot.F: move call to W2_EEBOOT before Coupler
433        tile-registration (CPL_REGISTER);
434      - activate (un-comment) definition and setting of "W2_tileIndex" list to
435        store the local bi,bj indices of each tile;
436      - also print bi,bj in local report to log file;
437      - fix pkg/debug/debug_cs_corner_uv.F for the case nSy > 1 (left from
438        Jun 2009 modif of pkg/exch2).
439    o testing on baudelaire:
440      - run 2 tests at a time: no significant slow down (since enough cpu) and
441        get the full set of test done earlier
442      - switch the ifort test to "-devel" ; run the OpenAD test everyday.
443    o model/src/thermodynamics.F and routines called from it:
444      - pkg/gmredi: gmredi_residual_flow.F (replacing gmredi_calc_uvflow.F &
445        gmredi_calc_wflow.F) to update eulerian velocity (input) into residual
446        velocity (outp) by adding bolus velocity.
447      - model/src: calc_adv_flow.F (replacing calc_common_factors.F) to compute
448        mass transport from velocity + lateral grid cell area
449      - rename calc_gt.F to temp_integrate.F (includes call to TIMESTEP_TRACER)
450      - rename calc_gs.F to salt_integrate.F (includes call to TIMESTEP_TRACER)
451     in thermodynamics.F
452      - remove k from thermodynamics.F and move it to temp_integrate.F
453        salt_integrate.F and ptracers_integrate.F (now done inside the tracer
454        loop).
455      - compute locally (in thermodynamics.F) 3-D velocity field that is used to
456        advect tracers; pass it as argument to GAD_ADVECTION, GAD_SOM_ADVECT,
457        PTRACERS_ADVECTION, TEMP_INTEGRATE, SALT_INTEGRATE, PTRACERS_INTEGRATE,
458        GAD_IMPLICIT_R and PTRACERS_IMPLICIT
459      - update AD-output (TAF & OAD) of experiments: 1D_ocean_ice_column,
460        global_ocean.90x40x15, tutorial_global_oce_biogeo and
461        tutorial_tracer_adjsens (+ TLM output).
462    o tools/OAD_support and (verification/*/) code_oad:
463      - OAD_support/cb2mGetModules.csh: add PACKAGES_CONFIG.h in header file to
464        module conversion ; remove unneeded CPP_EEOPTIONS.h.
465      - code_oad/CPP_OPTIONS.h: remove PACKAGES_CONFIG.h and use a more standard
466        version (closer to model/inc/CPP_OPTIONS.h).
467    o model/src:
468      - remove parameter "useOldFreezing" from PARAMS.h and push it to the
469        retired list of parameters (routine FREEZE has been replace by surface
470        freezing (10.yrs ago) and by pkg/frazil (interior freezing).
471    o pkg/gmredi:
472      - add option (GM_CALC_TRANSP_FROM_VEL) to compute transport directly from
473        velocity (same scheme but affects machine truncation) for GM_AdvForm.
474      - update output of FWD experiments: front_relax.bvp,
475        global_ocean.90x40x15.dwnslp, global_ocean.cs32x15 and ideal_2D_oce.
476    
477    checkpoint64q (2013/11/17)
478    o verification:
479      - generate new output on baudelaire (gfortran, -ieee) for OpenAD experiments
480        tutorial_global_oce_biogeo and global_ocean.90x40x15.
481      - generate new output (growth & melt) for seaice_itd experiment after
482        updating the input pickup_seaice files (previously wrong).
483    o pkg/cost:
484      - define a "final cost function" for each tile, and use GLOBAL_SUM_TILE_RL
485        (instead of _GLOBAL_SUM_RL) to get the final cost from all procs & threads:
486        o this fixes global-sum value if multi-threads (since GLOBAL_SUM_RL
487          cannot be applied to var in common block).
488        o allows to get results independent of tile-per-proc setting (if using
489          slower GLOBAL_SUM_SEND_RECV option).
490      - update accordingly: seaice_cost_final.F, shelfice_cost_final.F,
491        thsice_cost_final.F and ecco_cost_final.F (this one affects lab_sea
492        forward gradients: update output).
493      - update */code_oad/externalDummies.F by adding dummy GLOBAL_SUM_TILE_RL
494        S/R and, for most exp., also comment out GLOBAL_SUM_R8.
495    o pkg/mom_common:
496      - move to pkg/mom_common and model/src (previously in tutorial_deep_convection
497        code) 2nd version of isotropic 3-D Smagorinsky code interface: strain and
498        viscosity are locally declared in dynmics.F and pass as argument to CALC_GW;
499        ensure that all field value that are used are set.
500    o tutorial_deep_convection (smag3d):
501      - add missing scaling in mom_calc_smag_3d.F;
502      - set smag3D_coeff in input.smag3d such that results do not change.
503    o pkg/dic:
504      - change dic_cost.F to compute cost on each tile first and then apply
505        GLOBAL_SUM_TILE_RL: this affects forward gradient of AD experiments
506        tutorial_dic_adjoffline & tutorial_global_oce_biogeo; update output.
507      - remove kLev argument and use GLOBAL_SUM_TILE_RL in tracer_meanarea.
508    o eesupp/src & pkg/mdsio:
509      - remove gather/scatter_vector.F (from eesupp) and mdsio_read/writevector.F
510        (from pkg/mdsio) since they are no longer used for tape IO.
511      - move simple C subroutine "setdir.c" from pkg/compon_communic to eesupp/src
512        (+ keep a copy in pkg/atm_ocn_coupler).
513    o verification/isomip:
514      - split domain in 8 squared tiles (instead of just 2) for FWD, AD & OAD tests.
515    o tools/build_options:
516      - optfile linux_amd64_ifort11, fast (no ieee) case:
517        to get a working restart for all experiments, add "-fp-model source"
518        to FOPTIM (also remove "-opt-streaming-stores auto" <- this is the default).
519    
520    checkpoint64p (2013/10/20)
521    o pkg/autodiff:
522      - adread_adwrite.F: when type and length do not match ALLOW_AUTODIFF_WHTAPEIO
523        criteria, return to simple (default) tape IO format.
524    o pkg/mdsio (+ eesupp/src):
525      - rewrite/simplify tape-IO S/R (new S/R MDS_READ/WRITE_TAPE replace
526        previous MDSREAD/WRITEVECTOR) with 2 array argument from each type (R4/R8);
527      - fix globalFile and singleCpuIO options using simpler global mapping.
528      - new pairs of scatter/gather vector S/R (one for each type, generated from
529        template) corresponding to simpler global mapping.
530      - adread_write.F: switch to new S/R (but leave old calls commented) and write
531        to globalFile when parameter globalFiles is set to True.
532      - switch on useSingleCpuIO in AD experiments: global_ocean.90x40x15 & isomip.
533    o pkg/autodiff:
534      - adread_adwrite.F: add a hack for RS arrays (when RS=real*4);
535        with ALLOW_AUTODIFF_WHTAPEIO defined, since corresponding (real*4) is
536        missing, just add a STOP if array type do not match.
537    o pkg/exf:
538      - to allow to use seaice-fraction from pkg/exf in other pkgs than pkg/seaice:
539         rename CPP option EXF_ALLOW_SEAICE_RELAX to EXF_SEAICE_FRACTION
540         and rename array obsSIce to exf_iceFraction.
541    o tutorial_deep_convection:
542      - add 1rst version of isotropic 3-D Smagorinsky code (from Louis-Philippe),
543        for now all in this exp. code dir.
544      - add secondary test using Smag-3D viscosity (keep very low backgroud visc for
545        testing) and flux-limter advection scheme for Temp. (no explicit diffusion).
546    o eesupp/src:
547      - added SINGLE_DISK_IO option because reading of parameter files on
548        very large number of processors did not work with existing set-up
549    
550    checkpoint64o (2013/09/25)
551    o pkg/atm_phys & atm_compon_interf:
552      - allows for coupling of gray-atmosphere (atm_phys) with ocean.
553    o tools/build_options:
554      - switch from "-fPIC" to "-mcmodel=medium" in optfiles: linux_amd64_gfortran
555        & linux_amd64_ifort11 and in linux_amd64_g77 & linux_amd64_open64 also
556        remove CPP setting (was identical to genmake2 default).
557    o pkg/gmredi & model/src: Some updating and work done on the residual model.
558      - created new file model/src/calc_eddy_stress.F to calculate the eddy stress.
559      - fixed up the calculation of the eddy stress and how it is added to the
560        external forcing via taueddy_external_forcing.F
561      - at the moment, it is very experimental and only works with the variable eddy
562        diffusivity calculated in gmredi_k3d.F
563    o pkg/seaice/seaice_check.F: add a check to catch the case of specifying
564        lw/swfluxfile instead of lw/swdownfile in data.exf together with pkg/seaice
565    o testreport (& tools/do_tst_2+2):
566      - for MPI test, set default COMMAND to 'mpirun -v -np TR_NPROC ./{executable}'
567    o tools/build_options: linux_amd64_gfortran & linux_amd64_ifort11:
568      - remove CPP='cpp -traditional -P' (this is genmake2 default)
569      - add switch (for big setups) to use 'medium' memory-model (but leave it
570        commented out for now). Note: needed with FC 19 to compile big setups.
571    o pkg/atm_compon_interf:
572      - regroup per field origin (model & pkgs) the coupling storage routines
573         (which accumalate in time each coupling field)
574      - move bi,bj loops inside atm_store_my_data.F and store also wind-stress;
575        update accordingly + simplify aim_do_physics.F
576    
577    checkpoint64n (2013/08/26)
578    o pkg/bbl:
579      - update formulation to reduce dispersion of tracer properties in bbl
580      - replaced horizontal and vertical transport parameters with velocities
581      - changes results for verification/global_with_exf.yearly
582    o verification/halfpipe_streamice:
583      - change to matrix construction; update both Fwd & AD output.
584    o verification/tutorial_tracer_adjsens:
585      - OpenAD test: switch to vector-invariant momentum since fluxform with
586        rStar causes problems with OpenAD; update output.
587    o tools:
588      - genmake2: define a common prefix for all temp-file names ; move them
589        to local /tmp disk (but would be easy to move them back);
590      - xmakedepend: apply the same switch for temp-files.
591    o pkg/offline:
592      - changes for use with rStar (NLFS): assume that we continue to provide
593        UVELMASS/hFacW_ini & VVELMASS/hFacS_ini (hFacWi,S_ini as written in grid
594        output files) and apply r* scaling at each time-step (function of the time
595        varying Eta field); use normal pickup files (needed for restart with NLFS).
596    o adjoint with OpenAD:
597      - move OpenAD-specific files from verification/OpenAD/code_oad_all to a new
598        package openad.  This package has to be compiled for all runs with OpenAD
599        instead of specifying code_oad_all as a modification directory.
600      - link the fortran templates from tools/OAD_support to the build directory
601        for preprocessing to avoid conflicts between different setups compiled
602        simultaneously and simplify cleanup.
603    o pkg/exf:
604      - in exf_getforcing.F: comment out most of the EXCH calls (fields used by
605        main model or other pkgs are exchanged in EXF_MAPFIELDS).
606    o model/src:
607      - do_stagger_fields_exchanges.F: skip EXCH calls when using pkg/offline
608        (similar to do_fields_blocking_exchanges.F).
609    o tools/genmake2:
610      - remove TAF output src code just before calling staf (when not doing a fresh
611        built, will stop if things go wrong with staf).
612      - fix target "adobj" (left from TAF version-2 transition)
613    o pkg/diagnostics:
614      - add a parameter to track the status of pkg/diagnostics activation;
615        this replace/extend the use of logical param "settingDiags" (to check
616        when adding diag to the list) to also check any DIAGNOSTICS_[]FILL* call.
617        New S/R to print error message and stop when pkgStatus is not right.
618      - to try: add a warning when "data.diagnostics" exist but useDiagnostics=F.
619    
620    checkpoint64m (2013/08/13)
621    o model/inc:
622      - move FCORI_MACROS.h from PARAMS(_MACROS).h to GRID_MACROS.h (left from
623        8 yrs ago modif when Coriolis arrays were moved from PARAMS.h to GRID.h)
624    o pkg/kpp & aim_v23:
625      - only call DIAGNOSTICS_FILL when useDiagnostics=TRUE.
626    o pkg/seaice:
627      - restore (last time on 2011/12/24) ability to compile pkg/seaice with
628        undefined pkg/exf ALLOW_ATM_TEMP or ALLOW_RUNOFF CPP-options.
629      - only call DIAGNOSTICS_FILL when useDiagnostics=TRUE.
630    o eesupp/src:
631      - fix check for overlap-size argument (myOLn.GT.MAX_OLY_EXCH)
632        in exch1_rx[_ad].template (thanks to Francois Lefeuvre report).
633    o switch to TAF version-2:
634      - add flow directives to "freeze" naming convention for ad-routines that
635        are used in I/O routines of adjoint state and associated common blocks
636        that are used in adcommon.h (backward compatible with version-1)
637      - update all ad-optfiles (in tools/adjoint_options + few local to some
638        verification exp) to switch to latest TAF version (currently 2.5.5);
639        merge "*_mpi" adoptfiles into the corresponding non-mpi (but commented
640        out except for diva).
641      - the major change with TAF version-2 is that both the differentiated
642        routines and the forward routines (new) are returned as part of the TAF
643        output source code. Update genmake2 accordingly.
644      - new output for AD experiment tutorial_global_oce_biogeo (better AD gradient
645        with version-2 when compared to TLM or FWD gradient); other experiments
646        output show minor changes (machine truncation level); update the few AD &
647        TLM output with 12 matching digits only (some prior to version-2 switch).
648    
649    checkpoint64l (2013/08/05)
650    o model/src:
651      - in dynamics.F, skip the call to CALC_VISCOSITY if momViscosity=F
652      - main_do_loop.F: no longer includes additional (AUTODIFF) header files
653        when using TAF but only if using OpenAD.
654    o pkg/mom_common+fluxform+vecinv:
655      - always set horiz. viscosity arrays to background value before calling
656        MOM_CALC_VISC (in MOM_FLUXFORM & MOM_VECINV) and call S/R MOM_CALC_VISC
657        only when using variable horiz. viscosity (useVariableVisc=T);
658      - simplify mom_vecinv.F (only 1 block for momViscosity).
659    o pkg/mom_common: variable horiz. viscosity in NH code
660      - move horiz-viscosity 3-D arrays viscAh_W & viscA4_W (used in calc_gw.F)
661        from model/inc/NH_VARS.h to pkg/mom_common/MOM_VISC.h
662      - store in common block (in MOM_VISC.h) logical parameters: useHarmonicVisc,
663        useBiharmonicVisc & useVariableVisc.
664      - fix old bug (already in 1rst implementation of variable horizontal viscosity
665        in calc_gw.F, version 1.27, 2006/06/20):
666        horizontal bi-harmonic viscosity in gW was missing when wiscA4W=0
667        even if variable bi-harmonic viscosity (e.g., viscA4Grid) was non-zero.
668      - change background horiz viscosity in vertical momentum (gW) to always be
669        viscAhW,viscA4W (instead of switching to viscAhD, viscA4D when using
670        any type of variable viscosity, e.g., viscAh/4Grid)
671      - change default value of viscAhW,viscA4W to viscAhD,viscA4D (instead of
672        viscAh,viscA4) which default to viscAh,viscA4 :  this avoid missing
673        horiz. viscosity in W eq when just setting viscAhD/Z,viscA4D/Z (since
674        default viscAh,viscA4 is zero).
675    o model/src:
676      - extend length of drC & recip_drC from Nr to Nr+1.
677    o Divided Adjoint (DIVA) with MPI:
678      - genmake2: do not create local ./mpi_headers dir when no file to copy into.
679      - remove option ALLOW_DIVIDED_ADJOINT_MPI (replaced by ALLOW_DIVIDED_ADJOINT
680        and ALLOW_USE_MPI) from model/src code and from ECCO_CPPOPTIONS.h.
681    
682    checkpoint64k (2013/07/23)
683    o tools/OAD_support:
684      - avoid the need for file "oadtempflile" in insertTemplateDir.bash
685        and remove it from genmake2.
686    o tools/build_options:
687      - remove MPI_HEADER_FILES_INC setting (no longer used) and comment out
688        MPI_HEADER_FILES list (let genmake2 find the missing headers)
689    o verification/halfpipe_streamice:
690      - change to driving stress formulation; update both Fwd & AD output.
691    o tools/genmake2 and Divided Adjoint with MPI:
692      - remove default setting of MPIINCLUDEDIR from $MPIHOME (always been broken);
693      - only create local ./mpi_headers dir if using MPI and MPIINCLUDEDIR is set;
694      - add new variable (LOCAL_MPI_HEADERS, replace MPI_HEADER_FILES_INC) in
695        Makefile, which is set by genmake2, and check which mpi-headers are needed.
696        Note: need to update adjoint_options/adjoint_diva_mpi accordingly.
697      - update target "CLEAN" (to also remove ./mpi_headers/ dir).
698    o testreport:
699      - changes for Divided Adjoint Run: when file "run_ADM_DIVA" is present,
700        perform additional runs (number of additional runs is "add_DIVA_runs" taken
701        from file run_ADM_DIVA ; should match "nchklev_3" in file "code_ad/tamc.h").
702    o verification/lab_sea (AD test):
703      - change to test Divided Adjoint Run in this set-up (both standard AD test
704        and 2 secondary AD test: noseaice + noseaicedyn); drop the evp AD test.
705    o pkg atm_ & ocn_compon_interf:
706      - remove cpl_earlyExpImpCall=F option (was mainly a hack added for the old
707        staggerTimeStep implementation) and disable (retired) corresponding
708        parameter.
709    o pkg/offline:
710      - comment out unused field-array: ICEM, ConvectCount, hflx[01], icem[01];
711      - add S/R OFFLINE_CHECK to print offline parameter summary
712        and stop if loading a file that is not used;
713      - enable to calculate GMRedi tensor, KPP mixing and convective index
714        when the corresponding file(s) is/are not specified (but pkg is used).
715      - comment out resetting of monitorFreq (to endTime) since it still useful
716        for monitoring CFL numbers and checking offline fields.
717    o OpenAD:
718      - do not define OAD_DEBUG (in tools/adjoint_options/adjoint_oad) to get
719        smaller standard output) and generate new (smaller) output (on baudelaire
720        using gfortran with -ieee) for exp. tutorial_tracer_adjsens
721    o model/src:
722      - call EXTERNAL_FORCING_SURF outside bi,bj loops (in do_oceanic_phys.F),
723        (where external_forcing_adjust was called) and change list of arguments;
724      - merge external_forcing_adjust.F into external_forcing_surf.F
725      - put surface relaxation of SST & SSS in new S/R (forcing_surf_relax.F)
726        which also contains balancing surface relaxation (ALLOW_BALANCE_RELAX,
727        previously in file "balance_relax.F", now removed); remove corresponding
728        arrays in FFIELDS.h.
729      - EXTERNAL_FORCING_SURF is now called when using pkg/offline; implement
730        a hack for getting back surfaceForcingS (loaded from file) when using
731        ALLOW_OLD_VIRTUALFLUX (pkg/dic, in DIC_OPTIONS.h) in offline set-up.
732      - update output of AD test experiment global_ocean.cs32x15.seaice_dynmix
733        (was getting only 11 digits for AD-grad, due to different truncation
734         error in AD code).
735    
736    checkpoint64j (2013/07/04)
737    o pkg/offline:
738      - to enable the use of other features with pkg offline (e.g., obcs),
739        also call S/R DO_OCEANIC_PHYS in offline run - more modifs to come.
740      - comment out "allowFreezing" (now active) in 2 offline testing exp.
741    o pkg/exf ALLOW_RUNOFTEMP
742      - fix sign and make compatible with temp_EvPrRn .NE. UNSET_RL
743      - ahdded RUNOFTEMP test to verification/global_ocean.cs32x15/input.seaice
744      - changes verification/global_ocean.cs32x15/results/output.seaice.txt
745    o pkg/atm_phys:
746      - allows to add some damping on uVel,vVel (strength only function of k).
747    o verification, ad-tests:
748      - reduce length of the simulation for AD test: global_ocean.cs32x15.seaice,
749        global_ocean_ebm and offline_exf_seaice.thsice.
750    o verification/halfpipe_streamice:
751      - found a bug in s/r pkg/streamice/streamice_advect_thickness which caused
752        flux input boundary conditions to be ignored; a fix for this bug changed
753        verification results for forward test.
754      - add adjoint test.
755    o pkg/ptracers:
756      - allow to restart without SOM pickup (resetting SOM to zero).
757    o pkg/gmredi:
758      - New parameterisation for the calculation of K and (GM_PsiX,GM_PsiY) added.
759      - It uses mixing length theory and suppression by steering level effects to
760        calculate a diffusivity used in the Redi tensor (see Bates et al., submitted
761        to JPO, for more details).
762      - It also uses the diffusivity to calculate an eddy induced streamfunction
763        based on a PV closure (rather than a buoyancy closure as in GM).
764      - New files added to pkg/gmredi:
765        gmredi_k3d.F calculates the diffusivity for the Redi tensor and the eddy
766          induced overturning streamfunction (called from gmredi_calc_tensor)
767        gmredi_calc_eigs.F calculates the eigenvalues and eigenvectors required
768          for use in gmredi_k3d
769        gmredi_calc_urms.F calculates the the rms eddy velocity used to calculate
770          the eddy diffusivity
771    
772    checkpoint64i (2013/06/18)
773    o pkg/cheapaml:
774      - take src files from MITgcm_contrib/verification_other/offline_cheapaml/code
775        that enable the use of seaice (pkg/thsice thermo & pkg/seaice dynamics)
776        with pkg/cheapaml.
777    o utils/python: add subpackage for cubed sphere function, first example is
778        simple cs.pcol to plot 2D fields on a map
779    o pkg/streamice:
780      - This is a new package in MITgcm, which solves dynamic equations for ice
781         sheets and ice streams
782      - At the moment it is independent of atmosphere/ocean dynamics, or any
783        other physical packages in MITgcm, even ShelfIce (although it is anticipat-
784        ed that this will change)
785      - There is a new verification exercise that tests it, halfpipe_streamice,
786        evolves a 40x80 km ice stream/ice shelf (at coarse resolution) in a
787        rectangular embayment
788      - halfpipe_streamice is forward-only for now, will have TAF test soon
789      - for questions, email dgoldber@mit.edu
790    o pkg/thsice:
791      - fix filling of snow-precip diagnostic (SIsnwPrc) (left from the removing
792        of snowPrc from common bloc, on May 2nd, thsice_step_fwd.F revision 1.40);
793      - remove diagnostics 'SI_FrcFx' ( now identical to 'SI_Fract' with new
794         call sequence: ice-Thermo(thsice),ice-Dyn,ice-Advect );
795      - allow precip from pkg/cheapaml to make snow over seaice.
796    o pkg/cfc:
797      - move in separated header file (CFC_ATMOS.h) time-serie arrays of Atmos CFC
798      - remove atmos CFC 2-D arrays from common bloc (now local variables)
799      - change some hard-coded constant to run time parameter for reading and
800        and interpolating atmospheric CFC ; keep same default as previously.
801      - more flexible reading of Atmos CFC (number of records no longer hard-coded)
802      - put arguments in standard order: myTime, myIter, myThid
803      - use standard S/R GET_PERIODIC_INTERVAL for time interpolation of
804        atmospheric CFC ; fix for the case myIter < PTRACERS_iter0.
805      - fix calculation of surf tendencys for partial-cell and/or Non-Lin Free-Surf
806      - new routine to print summary of CFC params and check for consistency.
807    o pkg/seaice: add uice/vice to the parameter list of s/r seaice_advdiff,
808      similar to thsice_advdiff.
809      Note that for the B-grid case the routine parameters uc/vc are overwritten.
810    o pkg/cfc:
811      - change time interpolation for atmospheric CFC-11 (now same as for CFC-12);
812        update output (CFC-11) of experiment cfc_example and tutorial_cfc_offline.
813      - fix interpolation of atmphspheric CFC between Sorthern and Northern
814        hemisphere value.
815    o pkg/seaice:
816      - allow to use seaice dynamics without pkg/exf (e.g., using pkg/cheapaml)
817    o pkg/seaice: add Adams-Bashforth2 time discretization for ice dynamics;
818                  so far only for JFNK-solver, turn on with SEAICEuseAB2 = .TRUE.
819      - requires an additional time level that is stored in the pickup
820      - you can start with AB2 from a pickup without this time level with
821        pickupStrictlyMatch = .false.
822    
823    checkpoint64h (2013/05/26)
824    o pkg/cheapaml:
825      - replace one ()**.5 with SQRT + use temp var "cdu = tau/Du" (coare3_flux);
826        affect machine truncation (but exp cheapAML_box still pass with 13 digits).
827      - consistent treatment of uWind,vWind location: assume everywhere in
828        pkg/cheapaml that they are on C-grid (@ uVel,vVel location)
829        (Note: was already the case for Tair,Qair advection);
830        add option (INCONSISTENT_WIND_LOCATION) to recover old results.
831      - compute diabatic forcing only in the interior (excluding overlap regions)
832      - fill in array "Qsw" (for short-wave heating);
833      - add diagnostic for precip ; fill-in diagnostics for cheapAML state vars
834        before any update (consistent with MITgcm state var diagnostics);
835      - cheapaml_fields_load.F & cheapaml_init_varia.F : only fill outer edges if
836        non periodic ; + adjusted for uWind,vWind (C-grid).
837    o pkg/seaice:
838      - remove dependence of pkg/seaice versus pkg/exf (file: pkg/pkg_depend) and
839        add explicitly pkg/exf in experiments that currently use pkg/seaice.
840      - allows to compile pkg/seaice without pkg/exf.
841    o tools/OAD_support:
842      - use a local copy (ourRWCPinBd) to ensure index ourRWCP stays within bounds
843        of array "ourStepOf" in function rvNextAction (revolve.F90).
844    o pkg/aim_compon_interf renamed to pkg/atm_compon_interf
845      - change pkg name (to be used with other atmospheric physics pkg)
846        but by-pass CVS when making the new pkg so that we keep the CVS history.
847    o pkg/offline:
848      - call OFFLINE_FIELDS_LOAD from pkg/offline/offline_init_varia.F
849        (previously called from pkg/dic_surfforcing_init.F)
850    o model/src:
851      - re-order sequence of calls within packages_init_variables.F, using
852        standard order, except for:
853         DIAGNOSTICS_INIT_VARIA and OFFLINE_INIT_VARIA (called @ the top),
854         CTRL_MAP_INI and OBCS_INIT_VARIABLES (called @ the bottom)
855    o new pkg: atm_phys
856      - add entry point and source code (previously in contrib
857          verification_other/atm_gray/code_gray/) for new pkg "atm_phys"
858        (atmospheric physics pkg from P. O'Gorman and T. Schneider, JCl, 2008).
859      - re-order sequence of calls within packages_readparms.F,
860         packages_init_fixed.F and packages_write_pickup.F
861        (but skip packages_init_variables.F because of TAF issues).
862      - update contrib/*/atm_gray/ experiment.
863    o pkg/seaice (ITD code):
864      - simplify and fix the writing of pickup-files for ITD case
865    o pkg/seaice (ITD code):
866      - introduce floe size dependent lateral melt for ITD case;
867      - cleaning (avoid division by zero, change to f77 syntax, remove tabs)
868      - update seaice_itd experiment main output.
869    o pkg/thsice:
870      - remove snowPrc from common block THSICE_FLUX, in THSICE_VARS.h and
871        declared it locally (without bi,bj) in thsice_main.F & aim_do_physics.F;
872        changed accordingly pkg/atm2d.
873    
874    checkpoint64g (2013/05/01)
875    o pkg/exf ALLOW_RUNOFTEMP
876      - if defined,  river and glacier runoff temperature can be read-in from
877        runoftempfile; runoftempfile needs to have same format as runofffile
878    o pkg/thsice (& pkg/bulk_force):
879      - In case Energy-Reference-Level (ERL) is used (temp_EvPrRn=0), account
880        for energy content of Precip + RunOff & Evap (like with pkg/exf).
881      - change computation domain to always be the interior (without overlap).
882      - fix bug (wrong overlap) when using EXF and stressReduction > 0.
883    o verification/tutorial_global_oce_biogeo:
884      - add preliminary OpenAD setup (still has problems)
885    o pkg/seaice:
886      - turn some parameters for choosing the convergence criterion of
887        the inexact Newton method (JFNK) into runtime parameters for convenience
888      - clean up seaice_calc_viscosities.F: remove/retire two options for
889        SEAICetaZmethod (1,2), introduce area weighting for method 3; this changes
890        the results of lab_sea/input because a division has been replaced by
891        a multiplication with the reciprocal (sumNorm)
892      - modify offline_exf_seaice/input.dyn_jfnk/data.seaice to improve
893        convergence of solver (changes results, of course), and to test some
894        new features
895    o model/src:
896      - remove unused (since Aug 2006) S/R SET_WRITE_GLOBAL_PICKUP and its call.
897      - remove unused forcing field "dQdT" and associated parameter "dQdTFile".
898      - move forcing adjustment (balancing surface forcing) in specific S/R
899        where might also be applied exchanges (if needed) to forcing arrays.
900    o pkg/shelfice:
901      - allow to specify the Ice-Shelf mass per unit area (instead of
902        shelficeLoadAnomaly) and do the conversion from one to the other
903      - move loading from file of shelficeLoadAnomaly from SHELFICE_INIT_VARIA
904        to SHELFICE_INIT_FIXED: (a) avoid some TAF recompution issues and
905        (b) will be loaded in time (before calling INI_PRESSURE) in case it is
906        needed in phi0surf for initial pressure calculation when useDynP_inEos_Zc
907      - update isomip experiment forward output (get machine truncation error
908        from conversion shelficeLoadAnomaly -> shelficeMass -> shelficeLoadAnomaly)
909    o verification/offline_exf_seaice:
910      revise data.seaice in input.thermo and input_ad and update results accordingly
911        HO = 0.2, SEAICE_areaLossFormula = 2,
912        SEAICE_growMeltByConv = .TRUE.,
913        SEAICE_doOpenWaterMelt = .TRUE.,
914      Improve consistency with input.thsice and fix the spurious 500m ice corners
915    o verification/global_ocean.cs32x15:
916      - set Energy Reference Level to liq. water @ 0 degC: temp_EvPrRn=0.,
917        in icedyn (thsice+seaice-dyn) test and update output.
918    o verification/offline_exf_seaice:
919      - adjust list of tested variables (with testreport) and update
920        standard test output with better slection of monitored fields.
921    o pkg/cd_code:
922      - swtich off Adams-Bashforth on the 1rst iteration. Update output of
923        experiment lab_sea.hb87
924    o tools/genmake2:
925      - change default makedepend from the system default to tools/xmakedepend:
926        When no makedepend is specified, select tools/xmakedepend it the test pass,
927        otherwise select the system default (if exist and pass the test) or
928        try to build cyrus-makedepend ; stop if none of the 3 works.
929    o pkg/exf & pkg/thsice:
930      - In case Energy-Reference-Level (ERL) is used (temp_EvPrRn=0), account
931        for energy content of Precip + RunOff & Evap. Assumes:
932       1) Rain has same temp as Air.
933       2) Snow has no heat capacity (consistent with seaice & thsice pkgs)
934       3) Run-Off comes at the temp of surface water (with same Cp)
935       4) Evap over ocean is released to the Atmos @ surf-temp (=SST); should be
936        put directly into Latent Heat flux & should use water-vapor heat capacity.
937       5) Evap over snow/seaice (pkg/thsice) assumes constant Lf+Lv (consistent
938        with snow having no Cp) => water vapor is released to Atmos @ 0^oC (=ERL).
939    o pkg/seaice: simplify the use of CPP flags in JFNK-related files
940        (compile when SEAICE_ALLOW_JFNK is defined)
941    o pkg/thsice:
942      - fix oceanic flux diagnostics & timeave (left from new sequence of calls
943        implementation): move THSICE_AVE call after the advection (called directly
944        from thsice_do_advect.F).
945    o verification/global_ocean.90x40x15 and OpenAD:
946      New experiment for OpenAD is identical to the one in input_ad except that
947        multiDimAdvection=.FALSE.,
948      There is still an issue with this.
949    o pkg/thsice:
950      - account for ice velocity (ocean relative velocity) in turbulent heat flux
951        at the base of the ice; update output of global_ocean.cs32x15 (icedyn)
952        and offline_exf_seaice (main test).
953    
954    checkpoint64f (2013/03/31)
955    o verification/OpenAD:
956      - new (smaller, without OAD_DEBUG) output_oadm.txt generated using gfortran.
957    o verification/isomip, pkg/shelfice and OpenAD:
958      - add OpenAD setup to this exp and make shelfice package work with OpenAD
959    o verification/tutorial_global_oce_biogeo:
960      - update AD and TLM output after turning off ALLOW_FE (in DIC_OPTIONS.h)
961    o verification/offline_exf_seaice:
962      - replace adjoint experiment (now similar to fwd input.thermo/ setup).
963    o verification/tutorial_tracer_adjsens, pkg/ptracers and OpenAD:
964      - add OpenAD setup to this exp and make ptracers package work with OpenAD
965    o pkg/seaice/seaice_evp.F:
966       mask the asymmetric contribution of the ice-ocean stress (when
967       the turningAngle is non-zero) over open water to avoid stripes
968       in the EVP-solutions after many EVP-substeps. This does not change
969       the verification experiment (because turningAngle=0 in that experiment),
970       but will affect other EVP solutions with turningAngle.ne.0
971    o verification, AD & TLM output:
972      - new TAF version 2.3.10 (previously 2.3.8) add more parenthesis in multiple
973        additions and multiplications which affect results at machine truncation
974        level. Update few AD output (1D_ocean_ice_column, bottom_ctrl_5x5,
975        lab_sea.noseaicedyn & offline_exf_seaice) and TLM output
976        (1D_ocean_ice_column & tutorial_tracer_adjsens.som81) which had only 12
977        digits of matching.
978    o pkg/seaice:
979       modify lsr-algorithm so that it vectorizes AND converges by using a
980       "zebra" method: split vector loop into two with step size 2; this
981       solves a general convergence problem for the JFNK solver on a vector
982       computer. It has the potential to even improve convergence for
983       non-vector machines, but it does change the results so it is turned
984       off by default. To turn on define CPP-flags SEAICE_VECTORIZE_LSR and
985       SEAICE_VECTORIZE_LSR_ZEBRA in SEAICE_OPTIONS.h
986    
987    checkpoint64e (2013/03/05)
988    o pkg/ecco and several verification experiments:
989       Remove special versions of the_model_main.F, the_main_loop.F, forward_step.F
990       from ecco package, and revert to unified routine in model/src/
991       Adjust verification experiments accordingly, especially gloal_oce_llc90
992       Should conclude long-standing work by Gael to reconsile the_main_loop with
993       ECCO and will enable OpenAD's revolve loop in ECCO setup.
994    o pkg/generic_advdiff:
995      - implement compressible flow method for multi-dim advection (similar to
996        gad_som_advect.F); add new option "GAD_MULTIDIM_COMPRESSIBLE" (since
997        TAF generates many recomputations) to use it; no yet coded with implicit
998        vertical advection.
999      - change experiment advect_cs (new output) and advect_xy (same output)
1000        to test compressible flow multi-dim advection.
1001    o pkg/generic_advdiff:
1002      - fix SOM advection for unusual cases (linear Free-Surf in r*, other
1003        cases where linear Free-Surf is not @ k=1, e.g., useShelfIce)
1004    o pkg/seaice:
1005      - fix bug in the no-slip implementation in seaice_calc_strainrates.F, this
1006        bug affects two verification experiments (lab_sea and lab_sea.hb87),
1007        recover old (wrong) results by setting noSlipFac = 2. in
1008        seaice_calc_strainrates.F;
1009      - add another averaging method for etaZ (etaZmethod=3), a mix of 2 and 0
1010      - add runtime parameter SEAICE_JFNKepsilon for that finite difference
1011        gradient in the Jacobian times vector operation (s/r seaice_jacvec)
1012      - fix line search in seaice_jfnk.F (s/r seaice_jfnk_update)
1013    o pkg/seaice: reorganize seaice_lsr.F to be able to reuse more code:
1014      - new subroutines seaice_lsr_tridiagu/v
1015      - introduce loop bounds i/jmin/max to be able to use a restricted
1016        additive Schwarz method, but not used for now.
1017      - rename SEAICE_CALC_LSR_COEFFS into SEAICE_LSR_CALC_COEFFS
1018      - use new subroutines seaice_lsr_tridiagu/v in s/r seaice_preconditioner
1019    o OpenAD support
1020       Reorganize S/R call for overall time-stepping loop to facilitate
1021       OpenAD revolve loop replacement
1022       (new S/R main_do_loop.F)
1023    o model/src:
1024      - add 3-D array 3rd dimension to argument list of S/R ADAMS_BASHFORTH2/3;
1025      - pkg/cheapaml: remove local S/R ADAMS2d and use instead standard S/R
1026        ADAMS_BASHFORTH2.
1027    o pkg/cheapaml:
1028      - add new parameter (default=F, same as before) to disable full domain
1029        (including land) periodicity in X & Y dir.
1030      - new S/R CHEAPAML_COPY_EDGES to copy relaxation field into edges of
1031        prognostics field ; merge the 2 S/R cycle_2d_tracer and timestep_2d_tracer
1032        into single S/R CHEAPAML_TIMESTEP.
1033    
1034    checkpoint64d (2013/02/17)
1035    o pkg/monitor (angular momentum):
1036      - do not add Eta contribution to the total AM if using rigid-lid;
1037      - correct for Adams-Bashforth in zonal-wind part (instead of in AM_eta).
1038      - horizontal discretisation: compute Zonal wind contribution separately for
1039        each component (instead of from cell centered averaged) and use the 4
1040        grid-cell corner averaged value of Omega*(R*cos_Phi)^2 in AM_eta part.
1041      - Check that AM is conserved with linear dynamics (momAdvection=F and linear
1042        FreeSurf) if using vectorInvariant momentum.
1043    o model/src (horizontal grid):
1044      - move initialisation of all horizontal grid arrays to null value
1045        from specific horizontal grid S/R to main S/R INI_GRID;
1046      - add 2 new arrays to project model C-grid velocity on to zonal direction
1047        (similar to AngleCosC & -AngleSinC but at U and V point location) and
1048        compute them in S/R CALC_GRID_ANGLES.
1049    o pkg/seaice: replace a hard coded parameter by a runtime parameter
1050        SEAICE_JFNK_tolIter
1051    o pkg/seaice: introduce a restricted additive Schwarz (RAS) method in
1052        preconditioner for JFNK (run LSR into the overlaps as far as possible,
1053        i.e OLx/y-2, but overwrite the solution in the overlaps)
1054      - extend loop range in seaice_calc_viscosity
1055      - add new parameters SEAICE_OLx/y (default = OLx/y-2)
1056      - add flexible loop ranges to seaice_preconditioner, seaice_calc_lsr_coeffs
1057      - slightly modify loops in tridiagonal solver lsr-preconditioner
1058      - by default remove the extra exchange in seaice_preconditioner with a
1059        replacement of an undocumented CPP flag by SEAICE_PRECOND_EXTRA_EXCHANGE
1060      - modify offline_exf_seaice so that old results without RAS are reproduced
1061        for output.dyn_jfnk.txt
1062      in seaice_fgmres.F (unrelated to RAS)
1063      - add a cpp-flag option for a re-ordered mapping (potentially more
1064        efficient), but because this changes the results, turn it off by
1065        default
1066      - replace the save statement by local common blocks
1067    o utils/matlab:
1068      - fix tile-offset in rdmnc.m when output was produced using EXCH2.
1069      - update cs_grid/bk_line scripts to use load_grid.m (in utils/matlab)
1070        instead of local script "load_cs.m".
1071    o pkg/seaice:
1072      - fix a serious bug in seaice_fgmres.F, s/r seaice_scalprod, connected
1073        to the scalarProductMetric and the unrolling. By chance this does not
1074        change the verification experiment, because of the particular domain
1075        decomposition
1076    o pkg/diagnostics:
1077      - change default missing_value from UNSET_RL to -999.
1078    o pkg/layers: improve vectorization of layers_fluxcalc.F
1079      - step 1: split loops, make TatU/V 2D arrays. This alone reduces the cpu
1080        time spent in this routine by more than a factor of 3 on an NEC-SX8
1081      - step 2: replace search algorithm by a bisection algorithm found in
1082        Press et al. Numerical Recipes in Fortran. This algorithm can be
1083        vectorized and finds the correct bin in approx. log2(Nlayers) steps.
1084        For now, use this algorithm only for TARGET_NEC_SX defined.
1085      - moved the search algorithm into a separate subroutine, that is kept
1086        within the same file for automatic inlining.
1087      - modified catching potential errors
1088    o pkg/ecco:
1089      - add compile switches ALLOW_SHALLOW_ALTIMETRY and ALLOW_HIGHLAT_ALTIMETRY.
1090    o model/src, pkg/autodiff, pkg/ctrl, pkg/grdchk :
1091      - modifications for ALLOW_GENTIM2D_CONTROL
1092      -- forward_step.F, the_main_loop.F : pass options and arrays for adjoint tapes.
1093      -- load_fields_driver.F : add call to CTRL_MAP_GENTIM2D( myTime, myIter, myThid )
1094      -- add xx_gentim2d0/1 in ctrl_ad_check_lev1_dir.h checkpoint_lev1_directives.h etc
1095      -- use ctrl_swapffields.F (new) instead of exf_SwapFFields.F in ctrl_get_gen.F
1096    o model/src:
1097      - account for moist thermodynamics in (dry) potential temperature equation;
1098        update results of experiments: aim.5l_cs (x2), fizhi-cs (std + aqualev)
1099        and cpl_aim+ocn.
1100      - also switch to standard compiler (gfortran, was using ifort previously)
1101        for fizhi-cs experiments reference output.
1102    o pkg/ctrl:
1103      - 1st step toward generic time-varying control variable (2D) via CPP option
1104        ALLOW_GENTIM2D_CONTROL
1105      - note new namelist ctrl_nml_genarr in data.ctrl
1106    o verification/global_ocean.cs32x15:
1107      - switch off OLD_THSICE_CALL_SEQUENCE (both forward and AD code) to use new
1108        thsice calling sequence and update "output.icedyn.txt" output file.
1109    o pkg/ptracers:
1110      - from Ryan A.: code to allow to restart a tracer at regular time interval
1111        specifying a reset frequency and a reset-phase (for each tracers).
1112    o pkg/thsice:
1113      - implement new sequence of calls for thsice+seaice:
1114          previously:   ice-Dyn,ice-Advect,ice-Thermo(thsice)
1115          new sequence: ice-Thermo(thsice),ice-Dyn,ice-Advect
1116      - allows (with temporary CPP option "#define OLD_THSICE_CALL_SEQUENCE"
1117        in CPP_OPTIONS.h) to recover old sequence;
1118      - update diagnostics for Intermediate State thsice diagnostics: now filled
1119        just before advection (instead of just after advection in old sequence);
1120      - update output of experiment offline_exf_seaice (standard test);
1121      - in global_ocean.cs32x15 exp., postpone output.icedyn.txt update
1122        by setting #define OLD_THSICE_CALL_SEQUENCE in CPP_OPTIONS.h
1123    o pkg/aim_v23:
1124      - use tiled array for aim_CO2 and surface wind speed for export to coupler;
1125      - use standard pkg/mdsio routines to read & write CO2 pickup file;
1126      - in-line S/R AIM_AIM2DYN_EXCHANGES in aim_do_physics.F;
1127      - Implement new sequence of calls for seaice advection (with thsice and
1128        seaice diffusion): do ice advection after ice-Thermodynamic (previously
1129        was done before); change aim_do_physics.F (split the bi,bj loops block);
1130      - use same CPP option (OLD_THSICE_CALL_SEQUENCE) to recover old sequence;
1131    o pkg/thsice:
1132      - add a missing EXCH of sIceLoad in thsice_main.F (ocean set-up) for the case
1133        where just seaice diffusion is used without seaice-dynamics.
1134    
1135    checkpoint64c (2013/01/18)
1136    o pkg/seaice:
1137      - add a parameter JFNKres_tFac that can replace JFNKres_t
1138        (= JFNKres_tFac*JFNKresidual before JFNK solver)
1139      - add a line search option to the JFNK solver
1140      - move update of u/vIce and computation of initial residual into a separate
1141        routine (same file); makes the code a little easier to read (?)
1142      - the line search requires computation of the residual and for some reason
1143        I cannot do the update of u/vIce at the beginning of the Newton loop
1144        without changing the results, so we move computation of the new residual
1145        also to the end of the Newton loop, even without the line search
1146    o pkg/mdsio:
1147      - write missing value (corresponding to undefined array value) to meta files;
1148        skip this if missing value is one (UNSET_RL would be a better value for the
1149        case of undefined missing value but it's current the default missing-value);
1150        Also update mdsio_read_meta.F (reading timeInterval & missing-value).
1151    o pkg/exf & thsice:
1152      - for diagnostics purpose, fill-up and update Qsw array (+ fill the
1153        diagnostics) even when SHORTWAVE_HEATING is #undef;
1154    o verification/cfc_example:
1155      - turn on pkg/layers with pkg/diagnostics (to test pkg/layers and to
1156        illustrate how to use it).
1157    o verification/offline_exf_seaice:
1158      in input: add SEAICErestoreUnderIce=.TRUE., and reduce size of forcing
1159        files to only one time-record.
1160      in input.thermo: narrow the 2 bands of low initial ice-concentration near
1161        N & S edges; switch on SEAICErestoreUnderIce=T; use pkg/diagnostics for
1162        snapshot output; same mcPheePiston value as in thsice with
1163        surf-current=0.2m/s.
1164      in input.thsice: similar set-up as in input.thermo (channel with same seaice
1165        initial conditions).
1166    o verification/cfc_example:
1167      - update file "data" with more standard choice (default rotationPeriod,
1168        exactConserv=T, reduce ivdc_kappa to 10, remove multiDimAdvection=F,
1169        set deltaTFreeSurf to deltaTtracer) and update the output.
1170    o pkg/layers:
1171      - fix bolus part so that it compiles with #undef GM_BOLUS_ADVEC;
1172      - ensure that "layers_bolus" is switched to False when useGMRedi=False.
1173    o verification/offline_exf_seaice:
1174      - set all {field}period to zero for constant-in-time forcing (not tested
1175        anywhere else).
1176    o verification/offline_exf_seaice:
1177      - dyn_lsr  : use pkg/seaice S/R (instead of pkg/thsice) to advect sea-ice;
1178      - dyn_jfnk : use pkg/thsice S/R (instead of pkg/seaice) to advect sea-ice.
1179    o model/src:
1180      - implement Finite-Volume method for (hydrostatic) presure gradient
1181        from S.-J. Lin (QJRMS 1997), for atmosphere using sigma-coordinate.
1182    o pkg/seaice: implement EVP* by Lemieux et al. (2012).
1183      - In order to be compatible with the default EVP code, this requires changing
1184        the EVP code around a little; and because any small change immediately
1185        breaks the lab_sea.hb87 verification experiment, the reference output is
1186        updated two times (each time the remaining aggrement was only 2 digits):
1187        - after replacing 1/dt by 1*recip_dt with a precomputed recip_dt
1188        - after replacing 1/(1+0.5*dt/tau) by a/(a+1), with a=2*tau/dt
1189        The adjoint test lab_sea.evp also needed to be updated.
1190      - Turn on EVP* by setting SEAICE_deltaTevp as before, and setting
1191        SEAICEuseEVPstar=.true.; for EVP* SEAICE_deltaTevp does not need to be
1192        a factor of SEAICE_deltaTdyn, and you can set the number of EVP steps
1193        explicitly with SEAICEnEVPstarSteps (thereby overriding the default of
1194        INT(SEAICE_deltaTdyn/SEAICE_deltaTevp)). Controlling EVP* is deliberately
1195        kept obscure, because I need to test it a little more.
1196    o pkg/cheapaml:
1197      - fix few incorrect type (_RL/_RS) in subroutine calls.
1198    o pkg/seaice:
1199      - new S/R SEAICE_MAP_RS2VEC (similar to SEAICE_MAP2VEC) to map _RS arrays
1200        to _RL vector; this fixes JFNK code when compiling with "-use_r4" option.
1201    o model/src:
1202      - add a warning if using select_rStar=2 with nonlinFreeSurf <> 4;
1203        change (in input_ad*/data) select_rStar from 2 to 1 for AD verification
1204        experiments global_ocean.cs32x15 & tutorial_tracer_adjsens (+ update output)
1205    o pkg/cheapaml:
1206      - replace "273.1 _d 0" by celsius2K in pkg/cheapaml/cheapaml.F and
1207        update output of experiment cheapAML_box.
1208      - store in CHEAPAML.h coeffs ssq[0:2] for saturation specific humidity,
1209        and set them only in one place (cheapaml_readparms.F).
1210      - replace "273.16 _d 0" by celsius2K & replace "3.14159 _d 0" by constant "PI"
1211      - remove re-setting of main-model parameter "celsius2K" (in cheapaml_readparms)
1212        and re-setting of cheapAML params "lath" & "p0" (in cheapaml_init_varia).
1213    o model/src/the_main_loop.F:
1214      - fix revision 129 : need both ALLOW_ECCO and ALLOW_ECCO_EVOLUTION.
1215    o pkg/seaice:
1216      - remove legacy branch code.
1217      - retire SEAICE_GROWTH_LEGACY and SEAICE_CAP_HEFF accordingly.
1218    o verification/*/code*/SEAICE_OPTIONS.h:
1219      - remove documentation for retired CPP flags (SEAICE_GROWTH_LEGACY,
1220        SEAICE_CAP_HEFF).
1221    o pkg/cheapaml:
1222      - use standard routine (S/R GET_PERIODIC_INTERVAL) to decide when it is time
1223        to load new forcing fields.
1224      - add missing "_d 0" where it's needed; + some editing (improve indentation).
1225      - remove switch to "-r8" compiler option (no longer needed) in verification
1226        cheapAML_box, keep same output (small trucation error differences).
1227    o verification/offline_exf_seaice:
1228      - add thermodynamics only test.
1229    o verification/cheapAML_box:
1230      - split the domain in 8 (2x4) tiles; add MPI and multi-threaded test;
1231        keep same output (same 14 digits for cg2d).
1232      - switch on "-r8" compiler option (some numerical values are missing
1233        the "_d 0") and update output (only 6 digits for cg2d were preserved).
1234    
1235    checkpoint64b (2012/12/24)
1236    o pkg/cheapaml:
1237      - remove un-used variables (Qnet,EmPmR) from pickup files.
1238      - store tendency of advected variables into cheapaml pickup file
1239        and fix the AB-2 restart.
1240    o verification/offline_exf_seaice and lab_sea adjoint:
1241      - switch to new code (#undef SEAICE_GROWTH_LEGACY).
1242      - switch to 4 time steps in offline, consistent with lab_sea.
1243      - match parameters from SEAICE_GROWTH_LEGACY branch in data.seaice.
1244      - update results after change of experiment seaice.
1245    o pkg/seaice:
1246      - remove option SEAICE_MULTICATEGORY; has been replaced with run-time
1247        parameter SEAICE_multDim. Issue a warning if SEAICE_MULTICATEGORY is
1248        still defined since SEAICE_multDim needs to be set to MULTDIM value (from
1249        SEAICE_SIZE.h) to recover previous #define SEAICE_MULTICATEGORY default.
1250    o model/src:
1251      - add run-time parameter to select CG2D solver minimum-residual solution
1252        (in case of a poor convergence).
1253    o pkg/seaice/seaice_lsr.F
1254      - move calculation of matrix coefficients into new
1255        S/R SEAICE_CALC_LSR_COEFFS; for now this routine remains in the same
1256        file; the main purpose of this change is to be able to reuse the code
1257        in S/R SEAICE_PRECONDITIONER
1258      - modify the computation of the residual so that the mass of sea-ice
1259        is not used twice; this simplifies the calculations, but since
1260        the residual is never used except when LSR_mixIniGuess.ge.4---and this is
1261        not tested in testreport---this does not affect the testreport results.
1262    o verification/seaice_obcs:
1263      - disable SEAICE_GROWTH_LEGACY; reset input files to match those of
1264        verification/lab_sea/input.salt_plume; changes results/output.txt*
1265    o model/src:
1266      - adapt quasi-hydrostatic formulation to work with p or p* coordinate.
1267    o pkg/seaice:
1268      - improve description of parameters in seaice_fgmres.F and start
1269        cleaning up the code
1270      - change name of SCALPROD to SEAICE_SCALPROD and modify meaning of
1271        second argument
1272      - add a metric based on grid cell area to SEAICE_SCALPROD; update
1273        results of offline_exf_seaice.dyn_jfnk
1274      - compute initial residual norm in seaice_jfnk based on SEAICE_SCALPROD
1275    o pkg/aim_v23:
1276      - fix an other bug in dissipation heating (grid-cell area was missing).
1277    o model/src + pkg/seaice:
1278      - add global (multi-tile) linear solver for pair of tri-diagonal system
1279        along X and Y lines, respectively for U and V component.
1280        Note: 1) MPI and cube-exchange not yet coded.
1281            2) probably not accurate for poorly conditioned / large size problem.
1282      - add option for SEAICE_LSR to use global (multi-tile) tri-diagonal solver;
1283        default: not compiled and not used.
1284    o pkg/seaice:
1285      - first attempt at a multi-threaded fgmres solver for the JFNK solver:
1286        introduce bi/bj loops and use global_sum_tile_rl instead of
1287        mpi_allreduce in seaice_fgmres.F
1288      - improve diagnostics output for fgmres solver (seaice_fgmres.F)
1289      - replace a few unnecessary goto statements by if-blocks  (seaice_fgmres.F)
1290      - add a verification experiment for JFNK in offline_exf_seaice
1291    o verification:
1292      - change (for now, only fwd test) offline_exf_seaice experiment:
1293        use a re-entrant channel with idealized coastline (trapezoidal shape)
1294        at southern boundary to explore seaice dynamics and thermodynamics
1295        with simple forcing. Main set-up has dynamics+thermo and SST relaxation;
1296        secondary test (input.thsice) use thermodynamics only with SST relaxation.
1297      - add seaice-dynamics only secondary test using LSR and pkg/thsice advection.
1298    o pkg/exf:
1299      - disable "sstExtrapol" when Nr=1
1300    o verification:
1301      - add new experiment "cheapAML_box" (simple 1 layer set-up from Bruno Deremble)
1302        to test pkg/cheapaml.
1303    o pkg/aim_v23 & pkg/shap_filt:
1304      - fix dissipation heating (erroneous gravity multiplication factor).
1305    o pkg/seaice:
1306      - remove unused field pressPre from jfnk solver
1307      - rename two subroutines in seaice_preconditioner.F
1308    o eesupp/src:
1309       - S/R MDSFINDUNIT avoids reserved unit numbers (scrUnit1, eeDataUnit ...)
1310    o pkg/seaice/seaice_preconditioner.F: fix preconditioner once again
1311       - remove wrong parts of the rhs and the lhs (were in there
1312         because I did not understand the concept of this preconditioner)
1313       - add an exchange between u- and v-sweep. This increases communication
1314         by a factor of two but improves the convergence of jfnk. Ideally,
1315         one would like the u- and v-sweep to be independent. So far within
1316         undocumented ifdefs
1317       - reorganize the extra computations for printing the residuals
1318    o tools/genmake2:
1319      - comment out the "mpif.h" include in NetCDF test programm (for MPI built)
1320        since it's not necessary (and was preventing to use MNC in some cases).
1321    
1322    checkpoint64a (2012/11/16)
1323    o pkg/autodiff:
1324      - improve pkg-internal logical parameter switch (inAd/inFwd mode) so that
1325        autodiff_readparms.F no longer depends on calling order (within
1326        packages_readparms.F) and no longer requires to include ${PKG}_PARMS.h):
1327        rename param turnFreeDriftInAdMode to SEAICEuseFREEDRIFTswitchInAd
1328        and change param SEAICEuseDYNAMICSinAdMode to SEAICEuseDYNAMICSswitchInAd.
1329    o pkg/obcs:
1330      - adding tidal velocity forcing capability to obcs
1331        for usage example, see verification/seaice_obcs/input.tides
1332    o pkg/seaice:
1333      - turn the LSR-relaxation parameters WFAU/V into runtime parameters
1334        SEAICE_LSRrelaxU/V
1335      - introduce runtime parameter SEAICEetaZmethod (=0 by default)
1336    o pkg/aim_v23:
1337      - implement heating from friction (bottom friction and stratospheric drag).
1338    o pkg/shap_filt:
1339      - fix diagnostic "SHAP_dKE" (was 2 time smaller); implement heating from
1340        dissipation but only for Shap_funct=2, active when addFrictionHeating=T.
1341    o model/src:
1342      - move AddMass common block from DYNVARS.h to FFIELDS.h; allow to read-in
1343        time-constant addMass field from file (addMassFile);
1344      - support for heating due to friction (and Kinetic Energy dissipation):
1345        add option, run-time switch and 3-D field array + support code ; each pkg
1346        or S/R can add heating contribution (if there is a sink of KE); the sum is
1347        accounted for as a Temperature tendency term (EXTERNAL_FORCING_T).
1348    o pkg/seaice:
1349      - complete merge of ITD code into seaice_growth.F
1350        from MITgcm_contrib/torge/itd/code/
1351        no verification so far, but Torge Martin tested
1352        "1-D test case and Beaufort set up;
1353        deliver okay results after 1 model year."
1354      - complete merge of SEAICE_SIZE.h into all relevant routines
1355      - move computation of eta at Z-points into calc_viscosities
1356        + introduce global field etaZ
1357        + add different methods for computing etaZ, for now the old
1358          method (simple averages of eta to Z-points) is hardwired
1359        + replace etaMeanZ by etaZ in seaice_lsr, seaice_calc_residual,
1360          seaice_preconditioner
1361      - simplify computations for SEAICE_ZETA_SMOOTHREG
1362      - seaice_preconditioner:
1363        + replace one remaining press by pressLoc (mistake)
1364        + adjust printing of residuals
1365      - improve I/O of diagnostics of JFNK in seaice_jfnk.F:
1366        + add (SEAICE.h) and rename some counters (initiliased in
1367          seaice_init_fixed.F)
1368        + add _BEGIN/END_MASTER (myThid)  around print statements
1369        + print total number of iterations and failures over SEAICE_monFreq
1370          interval to STDOUT
1371      - move control over output-messages by fgmres to seaice_jfnk to save
1372        some operations
1373      - move resetting initial guess for fgmres outside of seaice_fgmres_driver
1374        in order to make restarts with sol .ne. zero (fgmres with restarts)
1375        (seaice_jfnk.F, seaice_fgmres.F)
1376      - seaice_calc_l/rhs.F: replace maskW/S by maskInW/S; this fixes
1377        a serious convergence problem when open boundaries are involved
1378    o pkg/ggl90: fix computation of control volumes for the case of
1379      ALLOW_GGL90_HORIZDIFF (probably not used very often): move control volumes
1380      up half a grid cell from C-centered to W-centered (pointed out by C. Eden)
1381    o pkg/seaice: simplify seaice_evp by avoiding use of extra fields u/vIceC
1382    o pkg/autodiff
1383      - Add inAdMode switch for SEAICEuseDYNAMICS:
1384        SEAICEuseDYNAMICSinAdMode
1385        (extend logic in ADAUTODIFF_INADMODE_SET)
1386    o pkg/seaice
1387      - Step 1 of merging ice-thickness distribution (ITD) code from
1388        MITgcm_contrib/torge/itd/ (author: Torge Martin)
1389        The code implements concept laid out in Thorndike et al. (1975);
1390        code is enabled via CPP flag SEAICE_ITD
1391        nITD (in SEAICE_SIZE.h) defines number of ice thickness categories;
1392        code is not complete yet!!
1393      - SEAICE_SIZE.h now included in almost all seaice routines
1394    o verification (using seaice):
1395      - switch back seaice-dynamics (+ lower SOLV_MAX_ITERS) in ADM exp.
1396        global_ocean.cs32x15.seaice ; update results.
1397      - compile B-grid dynamics in FW test exp 1D_ocean_ice_column ;
1398      - compile C-grid dynamics with #define SEAICE_ALLOW_JFNK in FW test exp
1399        offline_exf_seaice (previously compiling B-grid).
1400    o pkg/exf:
1401      - fix some STOP conditions in exf_check.F (from Aug 28, modifs did not allow
1402        to specify neither just 1 comp of wind or wind-stress, nor no surface momentum
1403        forcing): just replace CPP option ALLOW_ATM_WIND with run-time param useAtmWind.
1404    o pkg/layers (adjust changes from Sept 19):
1405      - do snap-shot output and fill diagnostics from inside iLa loop (layers_calc.F)
1406        this allows to remove "layers_maxNum" dimension from all layers arrays.
1407    o pkg/layers (adjust changes from Sept 19):
1408      - remove ALLOW_LAYERS_OUTPUT ; fix snap-shot and time-ave output ;
1409      - snap-shot extended to all type of layers (not just the 1rst type);
1410      - remove layers variables when corresponding CPP option is undef.
1411    o pkg/layers:
1412      - rename pkg/layers variable and add new output (layer exist & un-weighted
1413        velocity in layer)
1414    o pkg/seaice:
1415      - simplify (?) ocean-drag coefficent computations by using
1416        the same routine in all three solvers (saves some code lines)
1417      - remove global fields DRAGA and DRAGS from C-grid code and
1418        declare them locally in lsr.F (the only place where they are
1419        still used)
1420      - update AD output of lab_sea.evp (very sensitive anyway).
1421    o pkg/seaice: add Jacobian-free Newton Krylov solver for ice dynamics
1422      (Lemieux et al. 2010, 2012). Turn on with the usual SEAICE_ALLOW_JFNK
1423      and SEAICEuseJFNK=.true. A few things to note:
1424      - involves a FGMRES, that is parallel but very inefficient,
1425        because of many scalar products (global sums) in the Gram-Schmidt
1426        orthogonalization method. Needs to be replaced. Original code
1427        from J.-F. Lemieux
1428      - preconditioner for FGMRES is a stripped down version of LSOR
1429      - SOLV_MAX_ITERS is now used for LSOR as a solver and as a
1430        preconditioner. For the preconditioner, the default is set to 10.
1431      - Jacobian times vector is computed with finite differences
1432      - marginally related to JFNK-solver: add a smooth regularization for
1433        zeta with tanh that will improve convergence (Lemieux and Tremblay,
1434        2009) for any implicit solver (not implemented for EVP because EVP
1435        does not need this regularization in the first place). Define
1436        SEAICE_ZETA_SMOOTHREG in SEAICE_OPTIONS.h to use.
1437    o eesupp/src:
1438      - check in genmake2 that intrinsic S/R flush is available.
1439      - add S/R to flush IO unit (if intrinsic S/R flush is available)
1440      - flush standard & error msg unit before MPI termination
1441      - if debugMode, flush IO unit after printing msg
1442    o pkg/ctrl:
1443      - ctrl_unpack.F, ALLOW_GENARR3D_CONTROL code: fix missing argument in call
1444        to ctrl_set_unpack_xyz.
1445    
1446    checkpoint64 (2012/10/09)
1447    o pkg/shelfice
1448      - in mom_fluxform.F, mom_vecinv.F:
1449        CALL SHELFICE_V_DRAG(bi,bj,k,vFld,KE,KappaRU,vF,myThid)
1450        Bug fix KappaRU -> KappaRV
1451        does not change verification/isomip but may change other setups
1452        (presumably constant KappaRU=KappaRV)
1453      - fix diagnostics SHIU/Vdrag (thanks to Tom Millgate)
1454    o pkg/obcs:
1455      - fixed some indexing bugs in obcs_seaice_sponge.F
1456      - added obcs relaxation subroutines for HSALT and HSNOW
1457      - changes verification/seaice_obcs/results/obcs_seaice_sponge.F
1458    o pkg/seaice:
1459      - add "multicategory" parameterization for snow in analogy to ice,
1460        default is off for now.
1461  o pkg/obcs:  o pkg/obcs:
1462    - added obcs_seaice_sponge.F for obcs relaxation of seaice variables;    - added obcs_seaice_sponge.F for obcs relaxation of seaice variables;
1463      see verification/seaice_obcs/input.seaiceSponge for example application.      see verification/seaice_obcs/input.seaiceSponge for example application.

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