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revision 1.1743 by mlosch, Mon Sep 24 15:07:38 2012 UTC revision 1.2016 by mlosch, Mon Jun 30 07:27:55 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/autodiff :
8      - introduce useSmoothCorrel2DinAdMode, SEAICEapproxLevInAd, and
9        viscFacInAd : run time parameters allowing for adjoint switches
10        note : logic for useSmoothCorrel2DinAdMode is in ctrl_readparms.F
11    o pkg/ecco :
12      - introduce cost_gencost_boxmean.F that computes a box mean
13        temperature (for use in adjoint sensitivity studies).
14    o model/src/set_defaults.F : initialize viscFacAdj to 1.
15    o pkg/mom_common/mom_calc_visc.F :
16      - ifdef ALLOW_AUTODIFF then include viscFacAdj factor.
17    o pkg/seaice/seaice_summary.F :
18      - statement for SEAICEadjMODE now in autodiff_readparms.F
19    o pkg/seaice
20      - remove some store directives and add new ones in an effort to get
21        finally rid off the recomputation warnings. This is successful
22        when SEAICE_VECTORIZE_LSR ***and*** SEAICE_LSR_ADJOINT_ITER are
23        defined (i.e. no extensive recomputation warnings left), but there
24        are still too many recomputations on the solver iteration level
25      - define SEAICE_VECTORISZE_LSR in offline_exf_seaice/code_ad/SEAICE_OPTIONS.h
26      - move definition of MPSEUDOTIMESTEPS into TAMC-block in
27        SEAICE_SIZE.h
28      - add a store directive in S/R seaice_calc_viscosities
29    o pkg/seaice (ITD code):
30      - fix definition of Hlimit for multi-threaded case
31      - use double precision arithmetic to compute Hlimit: this affects results;
32        update output of experiment seaice_itd.
33    o replace content of verification/seaice_itd
34      - instead of a 1D column use the configuration of offline_exf_seaice
35        to test the ice thickness distribution code with ridging
36      - this is a first shot at this experiment
37      - change of some defaults of ridging parameters SEAICEhStar (from
38        100 to 25) and SEAICEmuRidging (from 5 to 3) in seaice_readparms.F
39        and lot of new comments.
40    
41    checkpoint64y (2014/06/20)
42    o pkg/seaice/seaice_reg_ridge.F:
43      - modify the regularization of very small volumes of ice; only check
44        total volume HEFF, and do not apply correction to individual ice
45        classes because that leads to funny patterns in the heat and fw-fluxes
46        into the ocean. Adjust seaice_itd/results/output.txt
47      - replace nITD by SEAICE_multDim in loop-ranges
48    o pkg/exf:
49      - add code to process the case field period = -12. with UV interpolation.
50      - move debug print (formerly active when exf_verbose=T) from EXF_getFFieldRec
51        into S/R that calls it (i.e., exf_set_gen.F, exf_set_uv.F & obcs_exf_load.F)
52    o verification/global_with_exf:
53      - switch all fields period to -12. (was previously untested) in input/data.exf
54        (but keep secondary test ".yearly" unchanged); update the reference output.
55    o pkg/cal:
56      - new calendar type "noLeapYear" for 365 days calendar without any leap year.
57    o pkg/exf:
58      - new integer parameter "exf_debugLev" (default set to main model debugLevel)
59        to replace logical switch "exf_verbose"
60      - report in STDOUT when loading a new record (if exf_debugLev >= 3)
61    o pkg/sbo:
62      - update from Katherine Quinn: evaluate mass directly from density and SSH
63        (budget using Finite Volume method) instead of from bottom pressure.
64      - allow testreport to collect few selected SBO output ; tested in exp.
65        global_ocean.90x40x15 (after updating the results, to include SBO output).
66      - fix some multi-threading issues (in output part).
67    o model/src & most packages:
68      - always call {PKG}_READPARMS even if corresponding use{PKG}=F;
69      - in {PKG}_READPARMS, in case use{PKG}=F: add a call to new S/R
70        PACKAGES_UNUSED_MSG to print a weak warning when parameter file
71        "data.{pkg}" exist ; and leave the S/R (return) just after.
72      - more standard LAND pkg interface (land_init_fixed.F, land_check.F).
73        + call LAND_READPARMS from packages_readparms.F
74    o pkg/seaice:
75      - remove code that resets useThSice in S/R seaice_readparms and
76        replace it by a warning in S/R seaice_check
77      - remove parameter MULTDIM, replace with nITD and runtime
78        parameter SEAICE_multDim (still hard-wired to nITD if
79        SEAICE_ITD is defined)
80    
81    checkpoint64x (2014/05/24)
82    o verification/lab_sea:
83      - update adjoint and TLM output following changes to pkg/salt_plume
84      - un-do the update after putting back local recip_Cp in few places.
85    o pkg/salt_plume: modifications by An Nguyen:
86      - add capability to do brine rejection (salt-plume) as function of
87        volume+tracers (instead of only salinity tracer).
88      - conserve volume by exchanging volume from each kLev to above to
89        accommodate in-coming brine volume
90      - store surface and klev exchanged fraction + volume in 4 new 3-d arrays
91      - switch KPP surf buoyancy due to brine forcing to 3-d
92        (3 more 3-d arrays, 2 for SPforcing[T,S], 1 for boplume)
93      - add salt_plume_volfrac, salt_plume_apply, salt_plume_tendency_apply_t
94      - unrelatedly, also add ad-hoc capability to vary salt_plume scheme
95        in East/West Arctic.
96    o pkg/sbo:
97      - incorporate modifications from Katherine Quinn to enable the use of sbo
98        pkg in ECCO-v4 set-up ; remove SBO-TimeAve output ; add monitor-like
99        output for future testreport verification (unfinished).
100    o pkg/atm_phys:
101      - change diagnostics (AtPh_Trf & AtPh_Qrf) of DARGAN_BETTSMILLER S/R:
102        skip the reseting of t_ref & q_ref to initial t & q ; this preserve the
103        output of S/R CAPECALCNEW (Parcel temp & q) for diagnostics.
104    o pkg/seaice
105      seaice_calc_ice_strength.F: modify expression to avoid divisions
106        (affects truncation)
107      seaice_do_ridging.F: clean up the insectarium
108      - fix a bug that was compensated by areaScaling (-> remove areaScaling code)
109      - added SEAICEsnowFracRidge to redistributed snow (2nd bug)
110      - set closing/openingRate to zero where no extra iteration is need (3rd bug)
111      - add some debugging information and error messages (warnings)
112    o model/src: modifications relatd to atmosphere p*:
113      - Switch to more accurate p* coordinate slope term (calc_grad_phi_hyd.F)
114      - With p* or Sigma-P, use constant reference Pot.Temp (thetaConst) instead
115        of vertical profile tRef in geopotential background and anomaly.
116      - Acount for true p* correction in theta <-> T conversion in pkg/aim_v23
117        and pkg/atm_phys.
118      - Update FWD output of experiments: aim.5l_cs (x2), fizhi-cs-32x32x40,
119        fizhi-cs-aqualev20, fizhi-gridalt-hs, tutorial_held_suarez_cs, cpl_aim+ocn.
120    o pkg/seaice: fix a bug in seaice_prepare_ridging.F, forgot a sqrt
121    o pkg/ptracers: compute ptracer source/sink due to linear free surface.
122        not used right now, but can be used in BGC packages to fix conservation.
123    o pkg/dic, pkg/gchem: move tracer_meanarea to gchem, so it can be used by
124        other packages too.
125    o pkg/seaice/seaice_calc_ice_strength.F: replace SEAICE_rhoSnow by
126        SEAICE_rhoIce in the Rothrock (1975)-type strength calculations (bug fix)
127    o model/src:
128      - since we have several heat capacity (even in model/src), define "recip_Cp"
129        as local variable (no longer in common block) to avoid any confusion.
130      - add thetaConst in PARAMS.h (to be used with pStar or sigma-P coords).
131    o pkg/exf:
132      - from Jeff Scott: add option (#define EXF_CALC_ATMRHO) to calculate local
133        air density as function of air Temp, Humidity and atm pressure.
134    
135    checkpoint64w (2014/05/02)
136    o verification:
137      - update output_adm.txt files for experiment global_ocean.cs32x15 (seaice &
138        seaice_dynmix) and lab_sea (primary test & noseaicedyn): moving/changing
139        code from seaice_growth.F & seaice_advdiff.F to new ridging routines
140        seaice_reg_ridge.F seaice_do_ridging.F affects AD gradient
141        (down to 8-7 matching digits for global_ocean and 5-6 for lab_sea).
142    o model/src: for atmosphere in p* coords:
143      - store factor rStarFacC**atm_kappa (= pStarFacK) in common block
144      - implement more accurate p* coordinate slope term (in calc_grad_phi_hyd.F),
145        but not yet activated.
146    o pkg/seaice: fix restart problem for ITD with new ice strength parameterisation:
147      - move computation of opnWtrFrac = 1-AREA to before computing ice strength
148      - this changes the results (but not for any verification experiment, because
149        none tests this), but avoids having an extra field in the restart files
150    o pkg/seaice: remove global variable TICE (not needed)
151      - replace by TICES or local variable where necessary (cost_seaice_test,
152        seaice_diagnostics_state)
153      - move copying TICE to TICES from seaice_check_pickup to seaice_read_pickup
154      - use specific read/write routines for reading and writing individual leves
155        of a multilevel field
156    o pkg/ctrl & model/inc:
157      - move additional anomaly fields of control vars (related to options:
158         ALLOW_KAPGM_CONTROL, ALLOW_KAPREDI_CONTROL and ALLOW_BOTTOMDRAG_CONTROL)
159        from DYNVARS.h into new header file: CTRL_FIELDS.h
160    o pkg/seaice: some small modifications to the ridging code
161      - make fw2ObyRidge a global variable and add the freshwater flux to
162        seaice_growth
163      - pass actual thickness from seaice_prepare_ridging, so that it is
164        computed only in one place and compute it in the same way as in
165        seaice_growth
166      - initialise more fields in seaice_do_ridging that where cause floating
167        point exceptions over land
168    o pkg/seaice: preparations for ridging code and first real ridging code
169      - move most of "PART 1" of S/R seaice_growth into a new and separate
170        S/R seaice_reg_ridge that will both regularize the state variable after
171        advection call the actual ridging routine;
172      - requires to make 5 fields global fields: d_HEFFbyNEG,d_HSNWbyNEG,
173        d_AREAbyRLX,d_HEFFbyRLX,saltFluxAdjust;
174      - remove ridging code from seaice_advdiff
175      - clean up remaining part 1 of seaice_growth in an attempt to make it
176        more readable (this is probably subjective)
177      - call seaice_itd_redist once in the initialisation phase to have the initial
178        conditions in the correct category
179      - finally: add new ridging routine for ITD code
180    
181    checkpoint64v (2014/04/11)
182    o pkg/ecco:
183      - add runtime parameters mdt[start,end]date[1,2]
184      - rename variable "tpmean" as "mdt" and "topexmeanfile" as "mdtdatfile"
185    o pkg/seaice:
186      - make deltaC a global variable, so that it can be used in ridging code
187      - first step towards ridging: introduce new routines that compute
188        ice strength based on ridging parameters
189      - add diagnostic for HSNOWITD
190      - add opnWtrFrac as a global variable (required for ridging scheme)
191    o pkg/salt_plume + pkg/seaice/seaice_growth.F
192      - add SALT_PLUME_IN_LEADS flag to activate pkg/salt_plume only when ice
193        AREA exceeds a threshold (code contributed by I.Fenty in 2011)
194    o verification/hs94.1x64x5:
195      - leave ALLOW_AUTODIFF_TAMC undefined in code_oad/AUTODIFF_OPTIONS.h
196      - do not use ECCO_CPPOPTIONS.h anymore for TAF & OpenAD Adjoint tests.
197    o autodiff:
198      - Start to include explicitly AUTODIFF_OPTIONS.h, COST_OPTIONS.h,
199        and CTRL_OPTIONS.h in src files (to enable to skip the ECCO_CPPOPTIONS.h)
200        For now, only in pkgs used in verification/hs94.1x64x5.
201      - Replace ALLOW_AUTODIFF_TAMC by ALLOW_AUTODIFF (except for tape/storage
202        which are specific to TAF/TAMC).
203      - Replace ALLOW_AUTODIFF_OPENAD by ALLOW_OPENAD:
204        since ALLOW_OPENAD is defined in PACKAGES_CONFIG.h (any time pkg/openad
205        is compiled), this simplifies/reduces which *_OPTIONS.h file to include.
206      - OpenAD: change Makefile to generate the appropriate AD_CONFIG.h when
207        building mitgcmuv_ad (make adAll).
208    o pkg/ecco:
209      - cost_gencost_seaicev4.F:
210         reformulate proxy cost as function of sst and local param SEAICE_freeze
211         change cost names from siv4-[sst,vol] to siv4-[deconc,exconc]
212      - add stop statement if old names siv4-[sst,vol] are used
213      - add snapshots + cost reports for atmospheric longwave
214      - remove factor 0.1 in front of wtau[u,v]
215      - replace never used flag ALLOW_TMI_COST_CONTRIBUTION with
216         ALLOW_TMI_SST_COST_CONTRIBUTION
217    o pkg/atm_phys:
218      - add some diagnostics for Short-wave and for convection S/R.
219    o pkg/seaice/seaice_growth:
220      - fix a bug in the lateral melt parameterization for SEAICE_ITD
221        in seaice_growth; tempFrz needs to be computed inside the i/j-loop
222      - rearrange loop order for better vector code in the same code block
223      - rewrite the floeDiameter formula to have fewer divisions
224      -  (miraculously) none of this changes the results of seaice_itd
225    o pkg/smooth:
226      - move param smooth2Ddiffnbt to pkg/ecco
227    o pkg/salt_plume:
228      - salt_plume_frac.F:
229         clean up local param names
230         reformulate (1-frac) to frac; original 1-frac was based on swfrac code
231    o pkg/rw:
232      - add RS version of S/R READ_MFLDS_LEV.
233    o pkg/streamice:
234      - fix the restart test by writing/reading pickup_streamice files.
235    o pkg/seaice:
236      - refine checks for jfnk-related parameters
237      - comment out if statement with SEAICEuseIMEX parameter as long as there
238        is no IMEX code to avoid confusion and surprises
239    
240    checkpoint64u (2014/03/07)
241    o verification/MLAdjust:
242      - rename secondary test suffix:
243         1.leith  -> A4FlxF  + switch to flux-form & add side-drag
244         0.leithD -> AhFlxF  + switch to flux-form
245         0.smag   -> AhVrDv  (use Vorticity-Div. visc form) + add side-drag
246         0.leith  -> AhStTn  (use Strain-Tension visc form) + add side-drag
247    o pkg/mom_vecinv:
248      - remove unused arguments from S/R MOM_VI_HDISSIP & MOM_HDISSIP (as it used
249        to be before mom_calc_visc.F)
250      - skip the call to MOM_CALC_TENSION & MOM_CALC_STRAIN if not needed.
251      - add 2nd copy of vort3 & strain that knows about lateral BC (free/no slip):
252        this is simpler for the adjoint and for diagnostics.
253    o model/src + pkg/momentum:
254      - add input files for  2-D additional Western and Southern cell-edge wall
255         (e.g., to add "thin-wall" where it is =1).
256      - fix sideDrag option for thin-walls with Non-Lin Free-Surf
257        using 2nd hFacZ that is computed from initial (fix domain) hFac
258      - known limitations of thin wall implementation: not yet coded for sigma
259        coords; not working with CD-scheme neither.
260    o pkg/seaice:
261      - rename recently introduced parameters from (wrong name) AB to
262        BDF (backward difference time discretisation)
263      - retire runtime parameters SEAICEuseAB2, SEAICE_abEps
264    o tools/adjoint_options:
265      - remove setting of "OPENAD=true" (now set by command line "genmake2 -oad")
266    
267    checkpoint64t (2014/02/01)
268    o pkg/ecco
269      - add compile flag ALLOW_GENCOST_TIMEVARY_WEIGHT in ECCO_OPTIONS.h and
270        runtime logical flag gencost_timevaryweight to read daily sea-ice sigma
271      - replace hard-coded record number and period which only work for monthly
272        with read-in runtime param that works for other periods (month,day,year)
273    o pkg/thsice
274      - corrected store directive fixes thsice adjoint gradient checks
275    o genmake2 & testreport:
276      - add genmake2 option "-oad" to generate a Makefile for OpenAD built and
277        in this case, use tools/adjoint_options/adjoint_oad as default AD optfile.
278        Update testreport accordingly. No need to set "export OPENAD=true"
279        in adjoint_options/adjoint_oad anymore (will be removed later).
280    o pkg/shelfice:
281      - put T & S shelfice forcing into model surfaceForcing_T,_S (for now,
282        only if SHELFICEboundaryLayer=F); Change model/src/external_forcing.F
283        so that surface forcing applies to k=kSurf if using pkg/shelfice.
284    o pkg/ctrl, pkg/grdchk, pkg/ecco:
285      - Changes to make GENARR more modular (i.e. invisible if not used)
286    o model/src/temp_integrate.F and salt_integrate.F
287      - re-include store directives that were removed on Dec 27th.
288    o model/src/external_forcing_surf.F
289      - add storage directives for EmPmR and PmEpR to avoid recomputation of
290        seaice_model in the adjoint that is problematic when seaice_model is
291        turned off in the adjoint. The resolved issue dated back to July when
292        EXTERNAL_FORCING_SURF call was moved.
293        Update global_ocean.cs32x15/*/output_adm.seaice_dynmix.txt accordingly.
294    o pkg/exf/exf_check.F
295      - fix a small bug again (originally found by Wentao Liu, now found again)
296      - streamline error output
297    o pkg/streamice and aim_v23:
298      - replace a few "_EXCH_XY_RL (" with "_EXCH_XY_RL(", so that
299        Apple's /usr/bin/cpp knows what to do:
300        Apple LLVM version 5.0 (clang-500.2.79) (based on LLVM 3.3svn)
301        Target: x86_64-apple-darwin13.0.0
302    
303    checkpoint64s (2014/01/05)
304    o tools/adjoint_options:
305      - switch to fastopt.net TAF server (instead of default fastopt.de) for
306        AD optfiles adjoint_diva & adjoint_f95 (similar to adjoint_default).
307    o model/src:
308      - remove some unnecessary TAF storage directives in forward_step.F and
309        in dynamics.F (note: not always removed by TAF, e.g., double storage
310        of kappaRU,kappaRV in former version of dynamics.F).
311    o model/src & pkg/ptracers:
312      - call directly GAD_IMPLICIT_R & IMPLDIFF + DWNSLP_APPLY from temp_integrate.F
313        salt_integrate.F and ptracers_integrate.F (instead of from thermodynamics.F)
314        and remove ptracers_dwnslp_apply.F & ptracers_implicit.F
315      - call MATRIX_STORE_TENDENCY_EXP for each tracer (in ptracers_integrate.F)
316      - add fZon & fMer as output argument of S/R GAD_CALC_RHS.
317      - update TAF AD-output of experiments global_ocean.90x40x15 (13 for AD-grad).
318    o useSingleCpuInput separates single-CPU input from single-CPU output;
319        for now only implemented for in exf_interp_read.F
320    o verification/advect_xy:
321      - fix missing EXCH call in local version of ini_salt.F and update output.
322    o momentum diagnostics:
323      - fix which deltaT is used in Total-Tendency diagnostics.
324      - fix typo in diagnostics for momentum tendency from AB.
325    o pkg/seaice/seaice_lsr.F: fix an initialisation bug for the
326        SEAICE_VECTORIZE_LSR_ZEBRA option that lead to NaNs on a NEC-SX8
327    
328    checkpoint64r (2013/12/08)
329    o verification/*/results:
330      - Update reference output of experiments that were passing with just 13 digits
331         (make it easier to detect future changes in results)
332    o model/src & pkg/ptracers:
333      - move calls to GAD_ADVECTION (Multi-Dim advection) from thermodynamics.F to
334        inside temp_integrate.F and salt_integrate.F and from ptracers_advection.F
335        to inside ptracers_integrate.F ; remove ptracers_advection.F
336    o coupling interface pkgs:
337        [atm_compon_interf, ocn_compon_interf & atm_ocn_coupler]
338      - change the config check to test the agreement of Ocean Depth
339        with ATM land/sea mask (instead of ATM orography);
340      - send to coupler the number of coupler time-steps to do for this run:
341        this allows to check for consistency and don't need anymore to be
342        specified in parameter file "data";
343      in coupler:
344      - check consistency of RunOff map versus Ocean Depth and ATM land/sea mask.
345      - improve report to log-file of config setting (pass log-file unit to few S/R)
346    o pkg/compon_communic:
347      - add coupling send/receive for non-tiled integer vector;
348      - add S/R to check and stop if any proc has an error (similar to
349        eesupp/src/stop_if_error.F but single thread and across Comm_World).
350    o pkg/exch2:
351      - in exch2*_get_rx[1,2]: use new list "W2_tileIndex" to replace search
352        through list of all tiles my proc owns.
353    o model/src:
354      - AUTODIFF only: in calc_adv_flow.F, recompute rTransKp (instead of copying
355        from rTrans) to simplify dependencies (no need to store rTrans anymore in
356        calling S/R); this affects AD results at machine truncation level:
357        update AD-output (TAF) of experiments: 1D_ocean_ice_column,
358        bottom_ctrl_5x5 & obcs_ctrl (12 digits for AD grad, same FWD grad).
359    o tools/build_options:
360      - simplify Warnings options (-ieee & -devel cases) in linux_amd64_gfortran
361    o coupling interface pkgs:
362        [compon_communic, atm_compon_interf & ocn_compon_interf]
363      - move declaration of local array "ibuf" out of header file "CPLR_SIG.h"
364        to each S/R that needs it; remove un-used variables.
365      - change component tile registration (cpl_register.F in both compon_interf
366        and mitcomponent_tile_register.F) to pass the full list of tiles
367        information (including bi,bj) in 1 vector (instead of in a bi,bj matrix).
368      - with pkg/exch2: adopt the same convention used for I/O to define mapping
369        towards coupler global array (unless W2_useE2ioLayOut=F):
370         a) can now use different tiling between atm & ocn comp.
371         b) no needs to modify the run-Off map when changing tiling (was needed
372            even if using the same tiling between atm & ocn).
373         c) will allow to run with blank-tiles in 1 component (e.g., for ocean
374            full land tiles); not yet tested.
375      - check for valid mapping from comp. tile to coupler global array
376      - improve report of tile registration results to log file.
377    o pkg/exch2:
378      - in eesupp/src/eeboot.F: move call to W2_EEBOOT before Coupler
379        tile-registration (CPL_REGISTER);
380      - activate (un-comment) definition and setting of "W2_tileIndex" list to
381        store the local bi,bj indices of each tile;
382      - also print bi,bj in local report to log file;
383      - fix pkg/debug/debug_cs_corner_uv.F for the case nSy > 1 (left from
384        Jun 2009 modif of pkg/exch2).
385    o testing on baudelaire:
386      - run 2 tests at a time: no significant slow down (since enough cpu) and
387        get the full set of test done earlier
388      - switch the ifort test to "-devel" ; run the OpenAD test everyday.
389    o model/src/thermodynamics.F and routines called from it:
390      - pkg/gmredi: gmredi_residual_flow.F (replacing gmredi_calc_uvflow.F &
391        gmredi_calc_wflow.F) to update eulerian velocity (input) into residual
392        velocity (outp) by adding bolus velocity.
393      - model/src: calc_adv_flow.F (replacing calc_common_factors.F) to compute
394        mass transport from velocity + lateral grid cell area
395      - rename calc_gt.F to temp_integrate.F (includes call to TIMESTEP_TRACER)
396      - rename calc_gs.F to salt_integrate.F (includes call to TIMESTEP_TRACER)
397     in thermodynamics.F
398      - remove k from thermodynamics.F and move it to temp_integrate.F
399        salt_integrate.F and ptracers_integrate.F (now done inside the tracer
400        loop).
401      - compute locally (in thermodynamics.F) 3-D velocity field that is used to
402        advect tracers; pass it as argument to GAD_ADVECTION, GAD_SOM_ADVECT,
403        PTRACERS_ADVECTION, TEMP_INTEGRATE, SALT_INTEGRATE, PTRACERS_INTEGRATE,
404        GAD_IMPLICIT_R and PTRACERS_IMPLICIT
405      - update AD-output (TAF & OAD) of experiments: 1D_ocean_ice_column,
406        global_ocean.90x40x15, tutorial_global_oce_biogeo and
407        tutorial_tracer_adjsens (+ TLM output).
408    o tools/OAD_support and (verification/*/) code_oad:
409      - OAD_support/cb2mGetModules.csh: add PACKAGES_CONFIG.h in header file to
410        module conversion ; remove unneeded CPP_EEOPTIONS.h.
411      - code_oad/CPP_OPTIONS.h: remove PACKAGES_CONFIG.h and use a more standard
412        version (closer to model/inc/CPP_OPTIONS.h).
413    o model/src:
414      - remove parameter "useOldFreezing" from PARAMS.h and push it to the
415        retired list of parameters (routine FREEZE has been replace by surface
416        freezing (10.yrs ago) and by pkg/frazil (interior freezing).
417    o pkg/gmredi:
418      - add option (GM_CALC_TRANSP_FROM_VEL) to compute transport directly from
419        velocity (same scheme but affects machine truncation) for GM_AdvForm.
420      - update output of FWD experiments: front_relax.bvp,
421        global_ocean.90x40x15.dwnslp, global_ocean.cs32x15 and ideal_2D_oce.
422    
423    checkpoint64q (2013/11/17)
424    o verification:
425      - generate new output on baudelaire (gfortran, -ieee) for OpenAD experiments
426        tutorial_global_oce_biogeo and global_ocean.90x40x15.
427      - generate new output (growth & melt) for seaice_itd experiment after
428        updating the input pickup_seaice files (previously wrong).
429    o pkg/cost:
430      - define a "final cost function" for each tile, and use GLOBAL_SUM_TILE_RL
431        (instead of _GLOBAL_SUM_RL) to get the final cost from all procs & threads:
432        o this fixes global-sum value if multi-threads (since GLOBAL_SUM_RL
433          cannot be applied to var in common block).
434        o allows to get results independent of tile-per-proc setting (if using
435          slower GLOBAL_SUM_SEND_RECV option).
436      - update accordingly: seaice_cost_final.F, shelfice_cost_final.F,
437        thsice_cost_final.F and ecco_cost_final.F (this one affects lab_sea
438        forward gradients: update output).
439      - update */code_oad/externalDummies.F by adding dummy GLOBAL_SUM_TILE_RL
440        S/R and, for most exp., also comment out GLOBAL_SUM_R8.
441    o pkg/mom_common:
442      - move to pkg/mom_common and model/src (previously in tutorial_deep_convection
443        code) 2nd version of isotropic 3-D Smagorinsky code interface: strain and
444        viscosity are locally declared in dynmics.F and pass as argument to CALC_GW;
445        ensure that all field value that are used are set.
446    o tutorial_deep_convection (smag3d):
447      - add missing scaling in mom_calc_smag_3d.F;
448      - set smag3D_coeff in input.smag3d such that results do not change.
449    o pkg/dic:
450      - change dic_cost.F to compute cost on each tile first and then apply
451        GLOBAL_SUM_TILE_RL: this affects forward gradient of AD experiments
452        tutorial_dic_adjoffline & tutorial_global_oce_biogeo; update output.
453      - remove kLev argument and use GLOBAL_SUM_TILE_RL in tracer_meanarea.
454    o eesupp/src & pkg/mdsio:
455      - remove gather/scatter_vector.F (from eesupp) and mdsio_read/writevector.F
456        (from pkg/mdsio) since they are no longer used for tape IO.
457      - move simple C subroutine "setdir.c" from pkg/compon_communic to eesupp/src
458        (+ keep a copy in pkg/atm_ocn_coupler).
459    o verification/isomip:
460      - split domain in 8 squared tiles (instead of just 2) for FWD, AD & OAD tests.
461    o tools/build_options:
462      - optfile linux_amd64_ifort11, fast (no ieee) case:
463        to get a working restart for all experiments, add "-fp-model source"
464        to FOPTIM (also remove "-opt-streaming-stores auto" <- this is the default).
465    
466    checkpoint64p (2013/10/20)
467    o pkg/autodiff:
468      - adread_adwrite.F: when type and length do not match ALLOW_AUTODIFF_WHTAPEIO
469        criteria, return to simple (default) tape IO format.
470    o pkg/mdsio (+ eesupp/src):
471      - rewrite/simplify tape-IO S/R (new S/R MDS_READ/WRITE_TAPE replace
472        previous MDSREAD/WRITEVECTOR) with 2 array argument from each type (R4/R8);
473      - fix globalFile and singleCpuIO options using simpler global mapping.
474      - new pairs of scatter/gather vector S/R (one for each type, generated from
475        template) corresponding to simpler global mapping.
476      - adread_write.F: switch to new S/R (but leave old calls commented) and write
477        to globalFile when parameter globalFiles is set to True.
478      - switch on useSingleCpuIO in AD experiments: global_ocean.90x40x15 & isomip.
479    o pkg/autodiff:
480      - adread_adwrite.F: add a hack for RS arrays (when RS=real*4);
481        with ALLOW_AUTODIFF_WHTAPEIO defined, since corresponding (real*4) is
482        missing, just add a STOP if array type do not match.
483    o pkg/exf:
484      - to allow to use seaice-fraction from pkg/exf in other pkgs than pkg/seaice:
485         rename CPP option EXF_ALLOW_SEAICE_RELAX to EXF_SEAICE_FRACTION
486         and rename array obsSIce to exf_iceFraction.
487    o tutorial_deep_convection:
488      - add 1rst version of isotropic 3-D Smagorinsky code (from Louis-Philippe),
489        for now all in this exp. code dir.
490      - add secondary test using Smag-3D viscosity (keep very low backgroud visc for
491        testing) and flux-limter advection scheme for Temp. (no explicit diffusion).
492    o eesupp/src:
493      - added SINGLE_DISK_IO option because reading of parameter files on
494        very large number of processors did not work with existing set-up
495    
496    checkpoint64o (2013/09/25)
497    o pkg/atm_phys & atm_compon_interf:
498      - allows for coupling of gray-atmosphere (atm_phys) with ocean.
499    o tools/build_options:
500      - switch from "-fPIC" to "-mcmodel=medium" in optfiles: linux_amd64_gfortran
501        & linux_amd64_ifort11 and in linux_amd64_g77 & linux_amd64_open64 also
502        remove CPP setting (was identical to genmake2 default).
503    o pkg/gmredi & model/src: Some updating and work done on the residual model.
504      - created new file model/src/calc_eddy_stress.F to calculate the eddy stress.
505      - fixed up the calculation of the eddy stress and how it is added to the
506        external forcing via taueddy_external_forcing.F
507      - at the moment, it is very experimental and only works with the variable eddy
508        diffusivity calculated in gmredi_k3d.F
509    o pkg/seaice/seaice_check.F: add a check to catch the case of specifying
510        lw/swfluxfile instead of lw/swdownfile in data.exf together with pkg/seaice
511    o testreport (& tools/do_tst_2+2):
512      - for MPI test, set default COMMAND to 'mpirun -v -np TR_NPROC ./{executable}'
513    o tools/build_options: linux_amd64_gfortran & linux_amd64_ifort11:
514      - remove CPP='cpp -traditional -P' (this is genmake2 default)
515      - add switch (for big setups) to use 'medium' memory-model (but leave it
516        commented out for now). Note: needed with FC 19 to compile big setups.
517    o pkg/atm_compon_interf:
518      - regroup per field origin (model & pkgs) the coupling storage routines
519         (which accumalate in time each coupling field)
520      - move bi,bj loops inside atm_store_my_data.F and store also wind-stress;
521        update accordingly + simplify aim_do_physics.F
522    
523    checkpoint64n (2013/08/26)
524    o pkg/bbl:
525      - update formulation to reduce dispersion of tracer properties in bbl
526      - replaced horizontal and vertical transport parameters with velocities
527      - changes results for verification/global_with_exf.yearly
528    o verification/halfpipe_streamice:
529      - change to matrix construction; update both Fwd & AD output.
530    o verification/tutorial_tracer_adjsens:
531      - OpenAD test: switch to vector-invariant momentum since fluxform with
532        rStar causes problems with OpenAD; update output.
533    o tools:
534      - genmake2: define a common prefix for all temp-file names ; move them
535        to local /tmp disk (but would be easy to move them back);
536      - xmakedepend: apply the same switch for temp-files.
537    o pkg/offline:
538      - changes for use with rStar (NLFS): assume that we continue to provide
539        UVELMASS/hFacW_ini & VVELMASS/hFacS_ini (hFacWi,S_ini as written in grid
540        output files) and apply r* scaling at each time-step (function of the time
541        varying Eta field); use normal pickup files (needed for restart with NLFS).
542    o adjoint with OpenAD:
543      - move OpenAD-specific files from verification/OpenAD/code_oad_all to a new
544        package openad.  This package has to be compiled for all runs with OpenAD
545        instead of specifying code_oad_all as a modification directory.
546      - link the fortran templates from tools/OAD_support to the build directory
547        for preprocessing to avoid conflicts between different setups compiled
548        simultaneously and simplify cleanup.
549    o pkg/exf:
550      - in exf_getforcing.F: comment out most of the EXCH calls (fields used by
551        main model or other pkgs are exchanged in EXF_MAPFIELDS).
552    o model/src:
553      - do_stagger_fields_exchanges.F: skip EXCH calls when using pkg/offline
554        (similar to do_fields_blocking_exchanges.F).
555    o tools/genmake2:
556      - remove TAF output src code just before calling staf (when not doing a fresh
557        built, will stop if things go wrong with staf).
558      - fix target "adobj" (left from TAF version-2 transition)
559    o pkg/diagnostics:
560      - add a parameter to track the status of pkg/diagnostics activation;
561        this replace/extend the use of logical param "settingDiags" (to check
562        when adding diag to the list) to also check any DIAGNOSTICS_[]FILL* call.
563        New S/R to print error message and stop when pkgStatus is not right.
564      - to try: add a warning when "data.diagnostics" exist but useDiagnostics=F.
565    
566    checkpoint64m (2013/08/13)
567    o model/inc:
568      - move FCORI_MACROS.h from PARAMS(_MACROS).h to GRID_MACROS.h (left from
569        8 yrs ago modif when Coriolis arrays were moved from PARAMS.h to GRID.h)
570    o pkg/kpp & aim_v23:
571      - only call DIAGNOSTICS_FILL when useDiagnostics=TRUE.
572    o pkg/seaice:
573      - restore (last time on 2011/12/24) ability to compile pkg/seaice with
574        undefined pkg/exf ALLOW_ATM_TEMP or ALLOW_RUNOFF CPP-options.
575      - only call DIAGNOSTICS_FILL when useDiagnostics=TRUE.
576    o eesupp/src:
577      - fix check for overlap-size argument (myOLn.GT.MAX_OLY_EXCH)
578        in exch1_rx[_ad].template (thanks to Francois Lefeuvre report).
579    o switch to TAF version-2:
580      - add flow directives to "freeze" naming convention for ad-routines that
581        are used in I/O routines of adjoint state and associated common blocks
582        that are used in adcommon.h (backward compatible with version-1)
583      - update all ad-optfiles (in tools/adjoint_options + few local to some
584        verification exp) to switch to latest TAF version (currently 2.5.5);
585        merge "*_mpi" adoptfiles into the corresponding non-mpi (but commented
586        out except for diva).
587      - the major change with TAF version-2 is that both the differentiated
588        routines and the forward routines (new) are returned as part of the TAF
589        output source code. Update genmake2 accordingly.
590      - new output for AD experiment tutorial_global_oce_biogeo (better AD gradient
591        with version-2 when compared to TLM or FWD gradient); other experiments
592        output show minor changes (machine truncation level); update the few AD &
593        TLM output with 12 matching digits only (some prior to version-2 switch).
594    
595    checkpoint64l (2013/08/05)
596    o model/src:
597      - in dynamics.F, skip the call to CALC_VISCOSITY if momViscosity=F
598      - main_do_loop.F: no longer includes additional (AUTODIFF) header files
599        when using TAF but only if using OpenAD.
600    o pkg/mom_common+fluxform+vecinv:
601      - always set horiz. viscosity arrays to background value before calling
602        MOM_CALC_VISC (in MOM_FLUXFORM & MOM_VECINV) and call S/R MOM_CALC_VISC
603        only when using variable horiz. viscosity (useVariableVisc=T);
604      - simplify mom_vecinv.F (only 1 block for momViscosity).
605    o pkg/mom_common: variable horiz. viscosity in NH code
606      - move horiz-viscosity 3-D arrays viscAh_W & viscA4_W (used in calc_gw.F)
607        from model/inc/NH_VARS.h to pkg/mom_common/MOM_VISC.h
608      - store in common block (in MOM_VISC.h) logical parameters: useHarmonicVisc,
609        useBiharmonicVisc & useVariableVisc.
610      - fix old bug (already in 1rst implementation of variable horizontal viscosity
611        in calc_gw.F, version 1.27, 2006/06/20):
612        horizontal bi-harmonic viscosity in gW was missing when wiscA4W=0
613        even if variable bi-harmonic viscosity (e.g., viscA4Grid) was non-zero.
614      - change background horiz viscosity in vertical momentum (gW) to always be
615        viscAhW,viscA4W (instead of switching to viscAhD, viscA4D when using
616        any type of variable viscosity, e.g., viscAh/4Grid)
617      - change default value of viscAhW,viscA4W to viscAhD,viscA4D (instead of
618        viscAh,viscA4) which default to viscAh,viscA4 :  this avoid missing
619        horiz. viscosity in W eq when just setting viscAhD/Z,viscA4D/Z (since
620        default viscAh,viscA4 is zero).
621    o model/src:
622      - extend length of drC & recip_drC from Nr to Nr+1.
623    o Divided Adjoint (DIVA) with MPI:
624      - genmake2: do not create local ./mpi_headers dir when no file to copy into.
625      - remove option ALLOW_DIVIDED_ADJOINT_MPI (replaced by ALLOW_DIVIDED_ADJOINT
626        and ALLOW_USE_MPI) from model/src code and from ECCO_CPPOPTIONS.h.
627    
628    checkpoint64k (2013/07/23)
629    o tools/OAD_support:
630      - avoid the need for file "oadtempflile" in insertTemplateDir.bash
631        and remove it from genmake2.
632    o tools/build_options:
633      - remove MPI_HEADER_FILES_INC setting (no longer used) and comment out
634        MPI_HEADER_FILES list (let genmake2 find the missing headers)
635    o verification/halfpipe_streamice:
636      - change to driving stress formulation; update both Fwd & AD output.
637    o tools/genmake2 and Divided Adjoint with MPI:
638      - remove default setting of MPIINCLUDEDIR from $MPIHOME (always been broken);
639      - only create local ./mpi_headers dir if using MPI and MPIINCLUDEDIR is set;
640      - add new variable (LOCAL_MPI_HEADERS, replace MPI_HEADER_FILES_INC) in
641        Makefile, which is set by genmake2, and check which mpi-headers are needed.
642        Note: need to update adjoint_options/adjoint_diva_mpi accordingly.
643      - update target "CLEAN" (to also remove ./mpi_headers/ dir).
644    o testreport:
645      - changes for Divided Adjoint Run: when file "run_ADM_DIVA" is present,
646        perform additional runs (number of additional runs is "add_DIVA_runs" taken
647        from file run_ADM_DIVA ; should match "nchklev_3" in file "code_ad/tamc.h").
648    o verification/lab_sea (AD test):
649      - change to test Divided Adjoint Run in this set-up (both standard AD test
650        and 2 secondary AD test: noseaice + noseaicedyn); drop the evp AD test.
651    o pkg atm_ & ocn_compon_interf:
652      - remove cpl_earlyExpImpCall=F option (was mainly a hack added for the old
653        staggerTimeStep implementation) and disable (retired) corresponding
654        parameter.
655    o pkg/offline:
656      - comment out unused field-array: ICEM, ConvectCount, hflx[01], icem[01];
657      - add S/R OFFLINE_CHECK to print offline parameter summary
658        and stop if loading a file that is not used;
659      - enable to calculate GMRedi tensor, KPP mixing and convective index
660        when the corresponding file(s) is/are not specified (but pkg is used).
661      - comment out resetting of monitorFreq (to endTime) since it still useful
662        for monitoring CFL numbers and checking offline fields.
663    o OpenAD:
664      - do not define OAD_DEBUG (in tools/adjoint_options/adjoint_oad) to get
665        smaller standard output) and generate new (smaller) output (on baudelaire
666        using gfortran with -ieee) for exp. tutorial_tracer_adjsens
667    o model/src:
668      - call EXTERNAL_FORCING_SURF outside bi,bj loops (in do_oceanic_phys.F),
669        (where external_forcing_adjust was called) and change list of arguments;
670      - merge external_forcing_adjust.F into external_forcing_surf.F
671      - put surface relaxation of SST & SSS in new S/R (forcing_surf_relax.F)
672        which also contains balancing surface relaxation (ALLOW_BALANCE_RELAX,
673        previously in file "balance_relax.F", now removed); remove corresponding
674        arrays in FFIELDS.h.
675      - EXTERNAL_FORCING_SURF is now called when using pkg/offline; implement
676        a hack for getting back surfaceForcingS (loaded from file) when using
677        ALLOW_OLD_VIRTUALFLUX (pkg/dic, in DIC_OPTIONS.h) in offline set-up.
678      - update output of AD test experiment global_ocean.cs32x15.seaice_dynmix
679        (was getting only 11 digits for AD-grad, due to different truncation
680         error in AD code).
681    
682    checkpoint64j (2013/07/04)
683    o pkg/offline:
684      - to enable the use of other features with pkg offline (e.g., obcs),
685        also call S/R DO_OCEANIC_PHYS in offline run - more modifs to come.
686      - comment out "allowFreezing" (now active) in 2 offline testing exp.
687    o pkg/exf ALLOW_RUNOFTEMP
688      - fix sign and make compatible with temp_EvPrRn .NE. UNSET_RL
689      - ahdded RUNOFTEMP test to verification/global_ocean.cs32x15/input.seaice
690      - changes verification/global_ocean.cs32x15/results/output.seaice.txt
691    o pkg/atm_phys:
692      - allows to add some damping on uVel,vVel (strength only function of k).
693    o verification, ad-tests:
694      - reduce length of the simulation for AD test: global_ocean.cs32x15.seaice,
695        global_ocean_ebm and offline_exf_seaice.thsice.
696    o verification/halfpipe_streamice:
697      - found a bug in s/r pkg/streamice/streamice_advect_thickness which caused
698        flux input boundary conditions to be ignored; a fix for this bug changed
699        verification results for forward test.
700      - add adjoint test.
701    o pkg/ptracers:
702      - allow to restart without SOM pickup (resetting SOM to zero).
703    o pkg/gmredi:
704      - New parameterisation for the calculation of K and (GM_PsiX,GM_PsiY) added.
705      - It uses mixing length theory and suppression by steering level effects to
706        calculate a diffusivity used in the Redi tensor (see Bates et al., submitted
707        to JPO, for more details).
708      - It also uses the diffusivity to calculate an eddy induced streamfunction
709        based on a PV closure (rather than a buoyancy closure as in GM).
710      - New files added to pkg/gmredi:
711        gmredi_k3d.F calculates the diffusivity for the Redi tensor and the eddy
712          induced overturning streamfunction (called from gmredi_calc_tensor)
713        gmredi_calc_eigs.F calculates the eigenvalues and eigenvectors required
714          for use in gmredi_k3d
715        gmredi_calc_urms.F calculates the the rms eddy velocity used to calculate
716          the eddy diffusivity
717    
718    checkpoint64i (2013/06/18)
719    o pkg/cheapaml:
720      - take src files from MITgcm_contrib/verification_other/offline_cheapaml/code
721        that enable the use of seaice (pkg/thsice thermo & pkg/seaice dynamics)
722        with pkg/cheapaml.
723    o utils/python: add subpackage for cubed sphere function, first example is
724        simple cs.pcol to plot 2D fields on a map
725    o pkg/streamice:
726      - This is a new package in MITgcm, which solves dynamic equations for ice
727         sheets and ice streams
728      - At the moment it is independent of atmosphere/ocean dynamics, or any
729        other physical packages in MITgcm, even ShelfIce (although it is anticipat-
730        ed that this will change)
731      - There is a new verification exercise that tests it, halfpipe_streamice,
732        evolves a 40x80 km ice stream/ice shelf (at coarse resolution) in a
733        rectangular embayment
734      - halfpipe_streamice is forward-only for now, will have TAF test soon
735      - for questions, email dgoldber@mit.edu
736    o pkg/thsice:
737      - fix filling of snow-precip diagnostic (SIsnwPrc) (left from the removing
738        of snowPrc from common bloc, on May 2nd, thsice_step_fwd.F revision 1.40);
739      - remove diagnostics 'SI_FrcFx' ( now identical to 'SI_Fract' with new
740         call sequence: ice-Thermo(thsice),ice-Dyn,ice-Advect );
741      - allow precip from pkg/cheapaml to make snow over seaice.
742    o pkg/cfc:
743      - move in separated header file (CFC_ATMOS.h) time-serie arrays of Atmos CFC
744      - remove atmos CFC 2-D arrays from common bloc (now local variables)
745      - change some hard-coded constant to run time parameter for reading and
746        and interpolating atmospheric CFC ; keep same default as previously.
747      - more flexible reading of Atmos CFC (number of records no longer hard-coded)
748      - put arguments in standard order: myTime, myIter, myThid
749      - use standard S/R GET_PERIODIC_INTERVAL for time interpolation of
750        atmospheric CFC ; fix for the case myIter < PTRACERS_iter0.
751      - fix calculation of surf tendencys for partial-cell and/or Non-Lin Free-Surf
752      - new routine to print summary of CFC params and check for consistency.
753    o pkg/seaice: add uice/vice to the parameter list of s/r seaice_advdiff,
754      similar to thsice_advdiff.
755      Note that for the B-grid case the routine parameters uc/vc are overwritten.
756    o pkg/cfc:
757      - change time interpolation for atmospheric CFC-11 (now same as for CFC-12);
758        update output (CFC-11) of experiment cfc_example and tutorial_cfc_offline.
759      - fix interpolation of atmphspheric CFC between Sorthern and Northern
760        hemisphere value.
761    o pkg/seaice:
762      - allow to use seaice dynamics without pkg/exf (e.g., using pkg/cheapaml)
763    o pkg/seaice: add Adams-Bashforth2 time discretization for ice dynamics;
764                  so far only for JFNK-solver, turn on with SEAICEuseAB2 = .TRUE.
765      - requires an additional time level that is stored in the pickup
766      - you can start with AB2 from a pickup without this time level with
767        pickupStrictlyMatch = .false.
768    
769    checkpoint64h (2013/05/26)
770    o pkg/cheapaml:
771      - replace one ()**.5 with SQRT + use temp var "cdu = tau/Du" (coare3_flux);
772        affect machine truncation (but exp cheapAML_box still pass with 13 digits).
773      - consistent treatment of uWind,vWind location: assume everywhere in
774        pkg/cheapaml that they are on C-grid (@ uVel,vVel location)
775        (Note: was already the case for Tair,Qair advection);
776        add option (INCONSISTENT_WIND_LOCATION) to recover old results.
777      - compute diabatic forcing only in the interior (excluding overlap regions)
778      - fill in array "Qsw" (for short-wave heating);
779      - add diagnostic for precip ; fill-in diagnostics for cheapAML state vars
780        before any update (consistent with MITgcm state var diagnostics);
781      - cheapaml_fields_load.F & cheapaml_init_varia.F : only fill outer edges if
782        non periodic ; + adjusted for uWind,vWind (C-grid).
783    o pkg/seaice:
784      - remove dependence of pkg/seaice versus pkg/exf (file: pkg/pkg_depend) and
785        add explicitly pkg/exf in experiments that currently use pkg/seaice.
786      - allows to compile pkg/seaice without pkg/exf.
787    o tools/OAD_support:
788      - use a local copy (ourRWCPinBd) to ensure index ourRWCP stays within bounds
789        of array "ourStepOf" in function rvNextAction (revolve.F90).
790    o pkg/aim_compon_interf renamed to pkg/atm_compon_interf
791      - change pkg name (to be used with other atmospheric physics pkg)
792        but by-pass CVS when making the new pkg so that we keep the CVS history.
793    o pkg/offline:
794      - call OFFLINE_FIELDS_LOAD from pkg/offline/offline_init_varia.F
795        (previously called from pkg/dic_surfforcing_init.F)
796    o model/src:
797      - re-order sequence of calls within packages_init_variables.F, using
798        standard order, except for:
799         DIAGNOSTICS_INIT_VARIA and OFFLINE_INIT_VARIA (called @ the top),
800         CTRL_MAP_INI and OBCS_INIT_VARIABLES (called @ the bottom)
801    o new pkg: atm_phys
802      - add entry point and source code (previously in contrib
803          verification_other/atm_gray/code_gray/) for new pkg "atm_phys"
804        (atmospheric physics pkg from P. O'Gorman and T. Schneider, JCl, 2008).
805      - re-order sequence of calls within packages_readparms.F,
806         packages_init_fixed.F and packages_write_pickup.F
807        (but skip packages_init_variables.F because of TAF issues).
808      - update contrib/*/atm_gray/ experiment.
809    o pkg/seaice (ITD code):
810      - simplify and fix the writing of pickup-files for ITD case
811    o pkg/seaice (ITD code):
812      - introduce floe size dependent lateral melt for ITD case;
813      - cleaning (avoid division by zero, change to f77 syntax, remove tabs)
814      - update seaice_itd experiment main output.
815    o pkg/thsice:
816      - remove snowPrc from common block THSICE_FLUX, in THSICE_VARS.h and
817        declared it locally (without bi,bj) in thsice_main.F & aim_do_physics.F;
818        changed accordingly pkg/atm2d.
819    
820    checkpoint64g (2013/05/01)
821    o pkg/exf ALLOW_RUNOFTEMP
822      - if defined,  river and glacier runoff temperature can be read-in from
823        runoftempfile; runoftempfile needs to have same format as runofffile
824    o pkg/thsice (& pkg/bulk_force):
825      - In case Energy-Reference-Level (ERL) is used (temp_EvPrRn=0), account
826        for energy content of Precip + RunOff & Evap (like with pkg/exf).
827      - change computation domain to always be the interior (without overlap).
828      - fix bug (wrong overlap) when using EXF and stressReduction > 0.
829    o verification/tutorial_global_oce_biogeo:
830      - add preliminary OpenAD setup (still has problems)
831    o pkg/seaice:
832      - turn some parameters for choosing the convergence criterion of
833        the inexact Newton method (JFNK) into runtime parameters for convenience
834      - clean up seaice_calc_viscosities.F: remove/retire two options for
835        SEAICetaZmethod (1,2), introduce area weighting for method 3; this changes
836        the results of lab_sea/input because a division has been replaced by
837        a multiplication with the reciprocal (sumNorm)
838      - modify offline_exf_seaice/input.dyn_jfnk/data.seaice to improve
839        convergence of solver (changes results, of course), and to test some
840        new features
841    o model/src:
842      - remove unused (since Aug 2006) S/R SET_WRITE_GLOBAL_PICKUP and its call.
843      - remove unused forcing field "dQdT" and associated parameter "dQdTFile".
844      - move forcing adjustment (balancing surface forcing) in specific S/R
845        where might also be applied exchanges (if needed) to forcing arrays.
846    o pkg/shelfice:
847      - allow to specify the Ice-Shelf mass per unit area (instead of
848        shelficeLoadAnomaly) and do the conversion from one to the other
849      - move loading from file of shelficeLoadAnomaly from SHELFICE_INIT_VARIA
850        to SHELFICE_INIT_FIXED: (a) avoid some TAF recompution issues and
851        (b) will be loaded in time (before calling INI_PRESSURE) in case it is
852        needed in phi0surf for initial pressure calculation when useDynP_inEos_Zc
853      - update isomip experiment forward output (get machine truncation error
854        from conversion shelficeLoadAnomaly -> shelficeMass -> shelficeLoadAnomaly)
855    o verification/offline_exf_seaice:
856      revise data.seaice in input.thermo and input_ad and update results accordingly
857        HO = 0.2, SEAICE_areaLossFormula = 2,
858        SEAICE_growMeltByConv = .TRUE.,
859        SEAICE_doOpenWaterMelt = .TRUE.,
860      Improve consistency with input.thsice and fix the spurious 500m ice corners
861    o verification/global_ocean.cs32x15:
862      - set Energy Reference Level to liq. water @ 0 degC: temp_EvPrRn=0.,
863        in icedyn (thsice+seaice-dyn) test and update output.
864    o verification/offline_exf_seaice:
865      - adjust list of tested variables (with testreport) and update
866        standard test output with better slection of monitored fields.
867    o pkg/cd_code:
868      - swtich off Adams-Bashforth on the 1rst iteration. Update output of
869        experiment lab_sea.hb87
870    o tools/genmake2:
871      - change default makedepend from the system default to tools/xmakedepend:
872        When no makedepend is specified, select tools/xmakedepend it the test pass,
873        otherwise select the system default (if exist and pass the test) or
874        try to build cyrus-makedepend ; stop if none of the 3 works.
875    o pkg/exf & pkg/thsice:
876      - In case Energy-Reference-Level (ERL) is used (temp_EvPrRn=0), account
877        for energy content of Precip + RunOff & Evap. Assumes:
878       1) Rain has same temp as Air.
879       2) Snow has no heat capacity (consistent with seaice & thsice pkgs)
880       3) Run-Off comes at the temp of surface water (with same Cp)
881       4) Evap over ocean is released to the Atmos @ surf-temp (=SST); should be
882        put directly into Latent Heat flux & should use water-vapor heat capacity.
883       5) Evap over snow/seaice (pkg/thsice) assumes constant Lf+Lv (consistent
884        with snow having no Cp) => water vapor is released to Atmos @ 0^oC (=ERL).
885    o pkg/seaice: simplify the use of CPP flags in JFNK-related files
886        (compile when SEAICE_ALLOW_JFNK is defined)
887    o pkg/thsice:
888      - fix oceanic flux diagnostics & timeave (left from new sequence of calls
889        implementation): move THSICE_AVE call after the advection (called directly
890        from thsice_do_advect.F).
891    o verification/global_ocean.90x40x15 and OpenAD:
892      New experiment for OpenAD is identical to the one in input_ad except that
893        multiDimAdvection=.FALSE.,
894      There is still an issue with this.
895    o pkg/thsice:
896      - account for ice velocity (ocean relative velocity) in turbulent heat flux
897        at the base of the ice; update output of global_ocean.cs32x15 (icedyn)
898        and offline_exf_seaice (main test).
899    
900    checkpoint64f (2013/03/31)
901    o verification/OpenAD:
902      - new (smaller, without OAD_DEBUG) output_oadm.txt generated using gfortran.
903    o verification/isomip, pkg/shelfice and OpenAD:
904      - add OpenAD setup to this exp and make shelfice package work with OpenAD
905    o verification/tutorial_global_oce_biogeo:
906      - update AD and TLM output after turning off ALLOW_FE (in DIC_OPTIONS.h)
907    o verification/offline_exf_seaice:
908      - replace adjoint experiment (now similar to fwd input.thermo/ setup).
909    o verification/tutorial_tracer_adjsens, pkg/ptracers and OpenAD:
910      - add OpenAD setup to this exp and make ptracers package work with OpenAD
911    o pkg/seaice/seaice_evp.F:
912       mask the asymmetric contribution of the ice-ocean stress (when
913       the turningAngle is non-zero) over open water to avoid stripes
914       in the EVP-solutions after many EVP-substeps. This does not change
915       the verification experiment (because turningAngle=0 in that experiment),
916       but will affect other EVP solutions with turningAngle.ne.0
917    o verification, AD & TLM output:
918      - new TAF version 2.3.10 (previously 2.3.8) add more parenthesis in multiple
919        additions and multiplications which affect results at machine truncation
920        level. Update few AD output (1D_ocean_ice_column, bottom_ctrl_5x5,
921        lab_sea.noseaicedyn & offline_exf_seaice) and TLM output
922        (1D_ocean_ice_column & tutorial_tracer_adjsens.som81) which had only 12
923        digits of matching.
924    o pkg/seaice:
925       modify lsr-algorithm so that it vectorizes AND converges by using a
926       "zebra" method: split vector loop into two with step size 2; this
927       solves a general convergence problem for the JFNK solver on a vector
928       computer. It has the potential to even improve convergence for
929       non-vector machines, but it does change the results so it is turned
930       off by default. To turn on define CPP-flags SEAICE_VECTORIZE_LSR and
931       SEAICE_VECTORIZE_LSR_ZEBRA in SEAICE_OPTIONS.h
932    
933    checkpoint64e (2013/03/05)
934    o pkg/ecco and several verification experiments:
935       Remove special versions of the_model_main.F, the_main_loop.F, forward_step.F
936       from ecco package, and revert to unified routine in model/src/
937       Adjust verification experiments accordingly, especially gloal_oce_llc90
938       Should conclude long-standing work by Gael to reconsile the_main_loop with
939       ECCO and will enable OpenAD's revolve loop in ECCO setup.
940    o pkg/generic_advdiff:
941      - implement compressible flow method for multi-dim advection (similar to
942        gad_som_advect.F); add new option "GAD_MULTIDIM_COMPRESSIBLE" (since
943        TAF generates many recomputations) to use it; no yet coded with implicit
944        vertical advection.
945      - change experiment advect_cs (new output) and advect_xy (same output)
946        to test compressible flow multi-dim advection.
947    o pkg/generic_advdiff:
948      - fix SOM advection for unusual cases (linear Free-Surf in r*, other
949        cases where linear Free-Surf is not @ k=1, e.g., useShelfIce)
950    o pkg/seaice:
951      - fix bug in the no-slip implementation in seaice_calc_strainrates.F, this
952        bug affects two verification experiments (lab_sea and lab_sea.hb87),
953        recover old (wrong) results by setting noSlipFac = 2. in
954        seaice_calc_strainrates.F;
955      - add another averaging method for etaZ (etaZmethod=3), a mix of 2 and 0
956      - add runtime parameter SEAICE_JFNKepsilon for that finite difference
957        gradient in the Jacobian times vector operation (s/r seaice_jacvec)
958      - fix line search in seaice_jfnk.F (s/r seaice_jfnk_update)
959    o pkg/seaice: reorganize seaice_lsr.F to be able to reuse more code:
960      - new subroutines seaice_lsr_tridiagu/v
961      - introduce loop bounds i/jmin/max to be able to use a restricted
962        additive Schwarz method, but not used for now.
963      - rename SEAICE_CALC_LSR_COEFFS into SEAICE_LSR_CALC_COEFFS
964      - use new subroutines seaice_lsr_tridiagu/v in s/r seaice_preconditioner
965    o OpenAD support
966       Reorganize S/R call for overall time-stepping loop to facilitate
967       OpenAD revolve loop replacement
968       (new S/R main_do_loop.F)
969    o model/src:
970      - add 3-D array 3rd dimension to argument list of S/R ADAMS_BASHFORTH2/3;
971      - pkg/cheapaml: remove local S/R ADAMS2d and use instead standard S/R
972        ADAMS_BASHFORTH2.
973    o pkg/cheapaml:
974      - add new parameter (default=F, same as before) to disable full domain
975        (including land) periodicity in X & Y dir.
976      - new S/R CHEAPAML_COPY_EDGES to copy relaxation field into edges of
977        prognostics field ; merge the 2 S/R cycle_2d_tracer and timestep_2d_tracer
978        into single S/R CHEAPAML_TIMESTEP.
979    
980    checkpoint64d (2013/02/17)
981    o pkg/monitor (angular momentum):
982      - do not add Eta contribution to the total AM if using rigid-lid;
983      - correct for Adams-Bashforth in zonal-wind part (instead of in AM_eta).
984      - horizontal discretisation: compute Zonal wind contribution separately for
985        each component (instead of from cell centered averaged) and use the 4
986        grid-cell corner averaged value of Omega*(R*cos_Phi)^2 in AM_eta part.
987      - Check that AM is conserved with linear dynamics (momAdvection=F and linear
988        FreeSurf) if using vectorInvariant momentum.
989    o model/src (horizontal grid):
990      - move initialisation of all horizontal grid arrays to null value
991        from specific horizontal grid S/R to main S/R INI_GRID;
992      - add 2 new arrays to project model C-grid velocity on to zonal direction
993        (similar to AngleCosC & -AngleSinC but at U and V point location) and
994        compute them in S/R CALC_GRID_ANGLES.
995    o pkg/seaice: replace a hard coded parameter by a runtime parameter
996        SEAICE_JFNK_tolIter
997    o pkg/seaice: introduce a restricted additive Schwarz (RAS) method in
998        preconditioner for JFNK (run LSR into the overlaps as far as possible,
999        i.e OLx/y-2, but overwrite the solution in the overlaps)
1000      - extend loop range in seaice_calc_viscosity
1001      - add new parameters SEAICE_OLx/y (default = OLx/y-2)
1002      - add flexible loop ranges to seaice_preconditioner, seaice_calc_lsr_coeffs
1003      - slightly modify loops in tridiagonal solver lsr-preconditioner
1004      - by default remove the extra exchange in seaice_preconditioner with a
1005        replacement of an undocumented CPP flag by SEAICE_PRECOND_EXTRA_EXCHANGE
1006      - modify offline_exf_seaice so that old results without RAS are reproduced
1007        for output.dyn_jfnk.txt
1008      in seaice_fgmres.F (unrelated to RAS)
1009      - add a cpp-flag option for a re-ordered mapping (potentially more
1010        efficient), but because this changes the results, turn it off by
1011        default
1012      - replace the save statement by local common blocks
1013    o utils/matlab:
1014      - fix tile-offset in rdmnc.m when output was produced using EXCH2.
1015      - update cs_grid/bk_line scripts to use load_grid.m (in utils/matlab)
1016        instead of local script "load_cs.m".
1017    o pkg/seaice:
1018      - fix a serious bug in seaice_fgmres.F, s/r seaice_scalprod, connected
1019        to the scalarProductMetric and the unrolling. By chance this does not
1020        change the verification experiment, because of the particular domain
1021        decomposition
1022    o pkg/diagnostics:
1023      - change default missing_value from UNSET_RL to -999.
1024    o pkg/layers: improve vectorization of layers_fluxcalc.F
1025      - step 1: split loops, make TatU/V 2D arrays. This alone reduces the cpu
1026        time spent in this routine by more than a factor of 3 on an NEC-SX8
1027      - step 2: replace search algorithm by a bisection algorithm found in
1028        Press et al. Numerical Recipes in Fortran. This algorithm can be
1029        vectorized and finds the correct bin in approx. log2(Nlayers) steps.
1030        For now, use this algorithm only for TARGET_NEC_SX defined.
1031      - moved the search algorithm into a separate subroutine, that is kept
1032        within the same file for automatic inlining.
1033      - modified catching potential errors
1034    o pkg/ecco:
1035      - add compile switches ALLOW_SHALLOW_ALTIMETRY and ALLOW_HIGHLAT_ALTIMETRY.
1036    o model/src, pkg/autodiff, pkg/ctrl, pkg/grdchk :
1037      - modifications for ALLOW_GENTIM2D_CONTROL
1038      -- forward_step.F, the_main_loop.F : pass options and arrays for adjoint tapes.
1039      -- load_fields_driver.F : add call to CTRL_MAP_GENTIM2D( myTime, myIter, myThid )
1040      -- add xx_gentim2d0/1 in ctrl_ad_check_lev1_dir.h checkpoint_lev1_directives.h etc
1041      -- use ctrl_swapffields.F (new) instead of exf_SwapFFields.F in ctrl_get_gen.F
1042    o model/src:
1043      - account for moist thermodynamics in (dry) potential temperature equation;
1044        update results of experiments: aim.5l_cs (x2), fizhi-cs (std + aqualev)
1045        and cpl_aim+ocn.
1046      - also switch to standard compiler (gfortran, was using ifort previously)
1047        for fizhi-cs experiments reference output.
1048    o pkg/ctrl:
1049      - 1st step toward generic time-varying control variable (2D) via CPP option
1050        ALLOW_GENTIM2D_CONTROL
1051      - note new namelist ctrl_nml_genarr in data.ctrl
1052    o verification/global_ocean.cs32x15:
1053      - switch off OLD_THSICE_CALL_SEQUENCE (both forward and AD code) to use new
1054        thsice calling sequence and update "output.icedyn.txt" output file.
1055    o pkg/ptracers:
1056      - from Ryan A.: code to allow to restart a tracer at regular time interval
1057        specifying a reset frequency and a reset-phase (for each tracers).
1058    o pkg/thsice:
1059      - implement new sequence of calls for thsice+seaice:
1060          previously:   ice-Dyn,ice-Advect,ice-Thermo(thsice)
1061          new sequence: ice-Thermo(thsice),ice-Dyn,ice-Advect
1062      - allows (with temporary CPP option "#define OLD_THSICE_CALL_SEQUENCE"
1063        in CPP_OPTIONS.h) to recover old sequence;
1064      - update diagnostics for Intermediate State thsice diagnostics: now filled
1065        just before advection (instead of just after advection in old sequence);
1066      - update output of experiment offline_exf_seaice (standard test);
1067      - in global_ocean.cs32x15 exp., postpone output.icedyn.txt update
1068        by setting #define OLD_THSICE_CALL_SEQUENCE in CPP_OPTIONS.h
1069    o pkg/aim_v23:
1070      - use tiled array for aim_CO2 and surface wind speed for export to coupler;
1071      - use standard pkg/mdsio routines to read & write CO2 pickup file;
1072      - in-line S/R AIM_AIM2DYN_EXCHANGES in aim_do_physics.F;
1073      - Implement new sequence of calls for seaice advection (with thsice and
1074        seaice diffusion): do ice advection after ice-Thermodynamic (previously
1075        was done before); change aim_do_physics.F (split the bi,bj loops block);
1076      - use same CPP option (OLD_THSICE_CALL_SEQUENCE) to recover old sequence;
1077    o pkg/thsice:
1078      - add a missing EXCH of sIceLoad in thsice_main.F (ocean set-up) for the case
1079        where just seaice diffusion is used without seaice-dynamics.
1080    
1081    checkpoint64c (2013/01/18)
1082    o pkg/seaice:
1083      - add a parameter JFNKres_tFac that can replace JFNKres_t
1084        (= JFNKres_tFac*JFNKresidual before JFNK solver)
1085      - add a line search option to the JFNK solver
1086      - move update of u/vIce and computation of initial residual into a separate
1087        routine (same file); makes the code a little easier to read (?)
1088      - the line search requires computation of the residual and for some reason
1089        I cannot do the update of u/vIce at the beginning of the Newton loop
1090        without changing the results, so we move computation of the new residual
1091        also to the end of the Newton loop, even without the line search
1092    o pkg/mdsio:
1093      - write missing value (corresponding to undefined array value) to meta files;
1094        skip this if missing value is one (UNSET_RL would be a better value for the
1095        case of undefined missing value but it's current the default missing-value);
1096        Also update mdsio_read_meta.F (reading timeInterval & missing-value).
1097    o pkg/exf & thsice:
1098      - for diagnostics purpose, fill-up and update Qsw array (+ fill the
1099        diagnostics) even when SHORTWAVE_HEATING is #undef;
1100    o verification/cfc_example:
1101      - turn on pkg/layers with pkg/diagnostics (to test pkg/layers and to
1102        illustrate how to use it).
1103    o verification/offline_exf_seaice:
1104      in input: add SEAICErestoreUnderIce=.TRUE., and reduce size of forcing
1105        files to only one time-record.
1106      in input.thermo: narrow the 2 bands of low initial ice-concentration near
1107        N & S edges; switch on SEAICErestoreUnderIce=T; use pkg/diagnostics for
1108        snapshot output; same mcPheePiston value as in thsice with
1109        surf-current=0.2m/s.
1110      in input.thsice: similar set-up as in input.thermo (channel with same seaice
1111        initial conditions).
1112    o verification/cfc_example:
1113      - update file "data" with more standard choice (default rotationPeriod,
1114        exactConserv=T, reduce ivdc_kappa to 10, remove multiDimAdvection=F,
1115        set deltaTFreeSurf to deltaTtracer) and update the output.
1116    o pkg/layers:
1117      - fix bolus part so that it compiles with #undef GM_BOLUS_ADVEC;
1118      - ensure that "layers_bolus" is switched to False when useGMRedi=False.
1119    o verification/offline_exf_seaice:
1120      - set all {field}period to zero for constant-in-time forcing (not tested
1121        anywhere else).
1122    o verification/offline_exf_seaice:
1123      - dyn_lsr  : use pkg/seaice S/R (instead of pkg/thsice) to advect sea-ice;
1124      - dyn_jfnk : use pkg/thsice S/R (instead of pkg/seaice) to advect sea-ice.
1125    o model/src:
1126      - implement Finite-Volume method for (hydrostatic) presure gradient
1127        from S.-J. Lin (QJRMS 1997), for atmosphere using sigma-coordinate.
1128    o pkg/seaice: implement EVP* by Lemieux et al. (2012).
1129      - In order to be compatible with the default EVP code, this requires changing
1130        the EVP code around a little; and because any small change immediately
1131        breaks the lab_sea.hb87 verification experiment, the reference output is
1132        updated two times (each time the remaining aggrement was only 2 digits):
1133        - after replacing 1/dt by 1*recip_dt with a precomputed recip_dt
1134        - after replacing 1/(1+0.5*dt/tau) by a/(a+1), with a=2*tau/dt
1135        The adjoint test lab_sea.evp also needed to be updated.
1136      - Turn on EVP* by setting SEAICE_deltaTevp as before, and setting
1137        SEAICEuseEVPstar=.true.; for EVP* SEAICE_deltaTevp does not need to be
1138        a factor of SEAICE_deltaTdyn, and you can set the number of EVP steps
1139        explicitly with SEAICEnEVPstarSteps (thereby overriding the default of
1140        INT(SEAICE_deltaTdyn/SEAICE_deltaTevp)). Controlling EVP* is deliberately
1141        kept obscure, because I need to test it a little more.
1142    o pkg/cheapaml:
1143      - fix few incorrect type (_RL/_RS) in subroutine calls.
1144    o pkg/seaice:
1145      - new S/R SEAICE_MAP_RS2VEC (similar to SEAICE_MAP2VEC) to map _RS arrays
1146        to _RL vector; this fixes JFNK code when compiling with "-use_r4" option.
1147    o model/src:
1148      - add a warning if using select_rStar=2 with nonlinFreeSurf <> 4;
1149        change (in input_ad*/data) select_rStar from 2 to 1 for AD verification
1150        experiments global_ocean.cs32x15 & tutorial_tracer_adjsens (+ update output)
1151    o pkg/cheapaml:
1152      - replace "273.1 _d 0" by celsius2K in pkg/cheapaml/cheapaml.F and
1153        update output of experiment cheapAML_box.
1154      - store in CHEAPAML.h coeffs ssq[0:2] for saturation specific humidity,
1155        and set them only in one place (cheapaml_readparms.F).
1156      - replace "273.16 _d 0" by celsius2K & replace "3.14159 _d 0" by constant "PI"
1157      - remove re-setting of main-model parameter "celsius2K" (in cheapaml_readparms)
1158        and re-setting of cheapAML params "lath" & "p0" (in cheapaml_init_varia).
1159    o model/src/the_main_loop.F:
1160      - fix revision 129 : need both ALLOW_ECCO and ALLOW_ECCO_EVOLUTION.
1161    o pkg/seaice:
1162      - remove legacy branch code.
1163      - retire SEAICE_GROWTH_LEGACY and SEAICE_CAP_HEFF accordingly.
1164    o verification/*/code*/SEAICE_OPTIONS.h:
1165      - remove documentation for retired CPP flags (SEAICE_GROWTH_LEGACY,
1166        SEAICE_CAP_HEFF).
1167    o pkg/cheapaml:
1168      - use standard routine (S/R GET_PERIODIC_INTERVAL) to decide when it is time
1169        to load new forcing fields.
1170      - add missing "_d 0" where it's needed; + some editing (improve indentation).
1171      - remove switch to "-r8" compiler option (no longer needed) in verification
1172        cheapAML_box, keep same output (small trucation error differences).
1173    o verification/offline_exf_seaice:
1174      - add thermodynamics only test.
1175    o verification/cheapAML_box:
1176      - split the domain in 8 (2x4) tiles; add MPI and multi-threaded test;
1177        keep same output (same 14 digits for cg2d).
1178      - switch on "-r8" compiler option (some numerical values are missing
1179        the "_d 0") and update output (only 6 digits for cg2d were preserved).
1180    
1181    checkpoint64b (2012/12/24)
1182    o pkg/cheapaml:
1183      - remove un-used variables (Qnet,EmPmR) from pickup files.
1184      - store tendency of advected variables into cheapaml pickup file
1185        and fix the AB-2 restart.
1186    o verification/offline_exf_seaice and lab_sea adjoint:
1187      - switch to new code (#undef SEAICE_GROWTH_LEGACY).
1188      - switch to 4 time steps in offline, consistent with lab_sea.
1189      - match parameters from SEAICE_GROWTH_LEGACY branch in data.seaice.
1190      - update results after change of experiment seaice.
1191    o pkg/seaice:
1192      - remove option SEAICE_MULTICATEGORY; has been replaced with run-time
1193        parameter SEAICE_multDim. Issue a warning if SEAICE_MULTICATEGORY is
1194        still defined since SEAICE_multDim needs to be set to MULTDIM value (from
1195        SEAICE_SIZE.h) to recover previous #define SEAICE_MULTICATEGORY default.
1196    o model/src:
1197      - add run-time parameter to select CG2D solver minimum-residual solution
1198        (in case of a poor convergence).
1199    o pkg/seaice/seaice_lsr.F
1200      - move calculation of matrix coefficients into new
1201        S/R SEAICE_CALC_LSR_COEFFS; for now this routine remains in the same
1202        file; the main purpose of this change is to be able to reuse the code
1203        in S/R SEAICE_PRECONDITIONER
1204      - modify the computation of the residual so that the mass of sea-ice
1205        is not used twice; this simplifies the calculations, but since
1206        the residual is never used except when LSR_mixIniGuess.ge.4---and this is
1207        not tested in testreport---this does not affect the testreport results.
1208    o verification/seaice_obcs:
1209      - disable SEAICE_GROWTH_LEGACY; reset input files to match those of
1210        verification/lab_sea/input.salt_plume; changes results/output.txt*
1211    o model/src:
1212      - adapt quasi-hydrostatic formulation to work with p or p* coordinate.
1213    o pkg/seaice:
1214      - improve description of parameters in seaice_fgmres.F and start
1215        cleaning up the code
1216      - change name of SCALPROD to SEAICE_SCALPROD and modify meaning of
1217        second argument
1218      - add a metric based on grid cell area to SEAICE_SCALPROD; update
1219        results of offline_exf_seaice.dyn_jfnk
1220      - compute initial residual norm in seaice_jfnk based on SEAICE_SCALPROD
1221    o pkg/aim_v23:
1222      - fix an other bug in dissipation heating (grid-cell area was missing).
1223    o model/src + pkg/seaice:
1224      - add global (multi-tile) linear solver for pair of tri-diagonal system
1225        along X and Y lines, respectively for U and V component.
1226        Note: 1) MPI and cube-exchange not yet coded.
1227            2) probably not accurate for poorly conditioned / large size problem.
1228      - add option for SEAICE_LSR to use global (multi-tile) tri-diagonal solver;
1229        default: not compiled and not used.
1230    o pkg/seaice:
1231      - first attempt at a multi-threaded fgmres solver for the JFNK solver:
1232        introduce bi/bj loops and use global_sum_tile_rl instead of
1233        mpi_allreduce in seaice_fgmres.F
1234      - improve diagnostics output for fgmres solver (seaice_fgmres.F)
1235      - replace a few unnecessary goto statements by if-blocks  (seaice_fgmres.F)
1236      - add a verification experiment for JFNK in offline_exf_seaice
1237    o verification:
1238      - change (for now, only fwd test) offline_exf_seaice experiment:
1239        use a re-entrant channel with idealized coastline (trapezoidal shape)
1240        at southern boundary to explore seaice dynamics and thermodynamics
1241        with simple forcing. Main set-up has dynamics+thermo and SST relaxation;
1242        secondary test (input.thsice) use thermodynamics only with SST relaxation.
1243      - add seaice-dynamics only secondary test using LSR and pkg/thsice advection.
1244    o pkg/exf:
1245      - disable "sstExtrapol" when Nr=1
1246    o verification:
1247      - add new experiment "cheapAML_box" (simple 1 layer set-up from Bruno Deremble)
1248        to test pkg/cheapaml.
1249    o pkg/aim_v23 & pkg/shap_filt:
1250      - fix dissipation heating (erroneous gravity multiplication factor).
1251    o pkg/seaice:
1252      - remove unused field pressPre from jfnk solver
1253      - rename two subroutines in seaice_preconditioner.F
1254    o eesupp/src:
1255       - S/R MDSFINDUNIT avoids reserved unit numbers (scrUnit1, eeDataUnit ...)
1256    o pkg/seaice/seaice_preconditioner.F: fix preconditioner once again
1257       - remove wrong parts of the rhs and the lhs (were in there
1258         because I did not understand the concept of this preconditioner)
1259       - add an exchange between u- and v-sweep. This increases communication
1260         by a factor of two but improves the convergence of jfnk. Ideally,
1261         one would like the u- and v-sweep to be independent. So far within
1262         undocumented ifdefs
1263       - reorganize the extra computations for printing the residuals
1264    o tools/genmake2:
1265      - comment out the "mpif.h" include in NetCDF test programm (for MPI built)
1266        since it's not necessary (and was preventing to use MNC in some cases).
1267    
1268    checkpoint64a (2012/11/16)
1269    o pkg/autodiff:
1270      - improve pkg-internal logical parameter switch (inAd/inFwd mode) so that
1271        autodiff_readparms.F no longer depends on calling order (within
1272        packages_readparms.F) and no longer requires to include ${PKG}_PARMS.h):
1273        rename param turnFreeDriftInAdMode to SEAICEuseFREEDRIFTswitchInAd
1274        and change param SEAICEuseDYNAMICSinAdMode to SEAICEuseDYNAMICSswitchInAd.
1275    o pkg/obcs:
1276      - adding tidal velocity forcing capability to obcs
1277        for usage example, see verification/seaice_obcs/input.tides
1278    o pkg/seaice:
1279      - turn the LSR-relaxation parameters WFAU/V into runtime parameters
1280        SEAICE_LSRrelaxU/V
1281      - introduce runtime parameter SEAICEetaZmethod (=0 by default)
1282    o pkg/aim_v23:
1283      - implement heating from friction (bottom friction and stratospheric drag).
1284    o pkg/shap_filt:
1285      - fix diagnostic "SHAP_dKE" (was 2 time smaller); implement heating from
1286        dissipation but only for Shap_funct=2, active when addFrictionHeating=T.
1287    o model/src:
1288      - move AddMass common block from DYNVARS.h to FFIELDS.h; allow to read-in
1289        time-constant addMass field from file (addMassFile);
1290      - support for heating due to friction (and Kinetic Energy dissipation):
1291        add option, run-time switch and 3-D field array + support code ; each pkg
1292        or S/R can add heating contribution (if there is a sink of KE); the sum is
1293        accounted for as a Temperature tendency term (EXTERNAL_FORCING_T).
1294    o pkg/seaice:
1295      - complete merge of ITD code into seaice_growth.F
1296        from MITgcm_contrib/torge/itd/code/
1297        no verification so far, but Torge Martin tested
1298        "1-D test case and Beaufort set up;
1299        deliver okay results after 1 model year."
1300      - complete merge of SEAICE_SIZE.h into all relevant routines
1301      - move computation of eta at Z-points into calc_viscosities
1302        + introduce global field etaZ
1303        + add different methods for computing etaZ, for now the old
1304          method (simple averages of eta to Z-points) is hardwired
1305        + replace etaMeanZ by etaZ in seaice_lsr, seaice_calc_residual,
1306          seaice_preconditioner
1307      - simplify computations for SEAICE_ZETA_SMOOTHREG
1308      - seaice_preconditioner:
1309        + replace one remaining press by pressLoc (mistake)
1310        + adjust printing of residuals
1311      - improve I/O of diagnostics of JFNK in seaice_jfnk.F:
1312        + add (SEAICE.h) and rename some counters (initiliased in
1313          seaice_init_fixed.F)
1314        + add _BEGIN/END_MASTER (myThid)  around print statements
1315        + print total number of iterations and failures over SEAICE_monFreq
1316          interval to STDOUT
1317      - move control over output-messages by fgmres to seaice_jfnk to save
1318        some operations
1319      - move resetting initial guess for fgmres outside of seaice_fgmres_driver
1320        in order to make restarts with sol .ne. zero (fgmres with restarts)
1321        (seaice_jfnk.F, seaice_fgmres.F)
1322      - seaice_calc_l/rhs.F: replace maskW/S by maskInW/S; this fixes
1323        a serious convergence problem when open boundaries are involved
1324    o pkg/ggl90: fix computation of control volumes for the case of
1325      ALLOW_GGL90_HORIZDIFF (probably not used very often): move control volumes
1326      up half a grid cell from C-centered to W-centered (pointed out by C. Eden)
1327    o pkg/seaice: simplify seaice_evp by avoiding use of extra fields u/vIceC
1328    o pkg/autodiff
1329      - Add inAdMode switch for SEAICEuseDYNAMICS:
1330        SEAICEuseDYNAMICSinAdMode
1331        (extend logic in ADAUTODIFF_INADMODE_SET)
1332    o pkg/seaice
1333      - Step 1 of merging ice-thickness distribution (ITD) code from
1334        MITgcm_contrib/torge/itd/ (author: Torge Martin)
1335        The code implements concept laid out in Thorndike et al. (1975);
1336        code is enabled via CPP flag SEAICE_ITD
1337        nITD (in SEAICE_SIZE.h) defines number of ice thickness categories;
1338        code is not complete yet!!
1339      - SEAICE_SIZE.h now included in almost all seaice routines
1340    o verification (using seaice):
1341      - switch back seaice-dynamics (+ lower SOLV_MAX_ITERS) in ADM exp.
1342        global_ocean.cs32x15.seaice ; update results.
1343      - compile B-grid dynamics in FW test exp 1D_ocean_ice_column ;
1344      - compile C-grid dynamics with #define SEAICE_ALLOW_JFNK in FW test exp
1345        offline_exf_seaice (previously compiling B-grid).
1346    o pkg/exf:
1347      - fix some STOP conditions in exf_check.F (from Aug 28, modifs did not allow
1348        to specify neither just 1 comp of wind or wind-stress, nor no surface momentum
1349        forcing): just replace CPP option ALLOW_ATM_WIND with run-time param useAtmWind.
1350    o pkg/layers (adjust changes from Sept 19):
1351      - do snap-shot output and fill diagnostics from inside iLa loop (layers_calc.F)
1352        this allows to remove "layers_maxNum" dimension from all layers arrays.
1353    o pkg/layers (adjust changes from Sept 19):
1354      - remove ALLOW_LAYERS_OUTPUT ; fix snap-shot and time-ave output ;
1355      - snap-shot extended to all type of layers (not just the 1rst type);
1356      - remove layers variables when corresponding CPP option is undef.
1357    o pkg/layers:
1358      - rename pkg/layers variable and add new output (layer exist & un-weighted
1359        velocity in layer)
1360    o pkg/seaice:
1361      - simplify (?) ocean-drag coefficent computations by using
1362        the same routine in all three solvers (saves some code lines)
1363      - remove global fields DRAGA and DRAGS from C-grid code and
1364        declare them locally in lsr.F (the only place where they are
1365        still used)
1366      - update AD output of lab_sea.evp (very sensitive anyway).
1367    o pkg/seaice: add Jacobian-free Newton Krylov solver for ice dynamics
1368      (Lemieux et al. 2010, 2012). Turn on with the usual SEAICE_ALLOW_JFNK
1369      and SEAICEuseJFNK=.true. A few things to note:
1370      - involves a FGMRES, that is parallel but very inefficient,
1371        because of many scalar products (global sums) in the Gram-Schmidt
1372        orthogonalization method. Needs to be replaced. Original code
1373        from J.-F. Lemieux
1374      - preconditioner for FGMRES is a stripped down version of LSOR
1375      - SOLV_MAX_ITERS is now used for LSOR as a solver and as a
1376        preconditioner. For the preconditioner, the default is set to 10.
1377      - Jacobian times vector is computed with finite differences
1378      - marginally related to JFNK-solver: add a smooth regularization for
1379        zeta with tanh that will improve convergence (Lemieux and Tremblay,
1380        2009) for any implicit solver (not implemented for EVP because EVP
1381        does not need this regularization in the first place). Define
1382        SEAICE_ZETA_SMOOTHREG in SEAICE_OPTIONS.h to use.
1383    o eesupp/src:
1384      - check in genmake2 that intrinsic S/R flush is available.
1385      - add S/R to flush IO unit (if intrinsic S/R flush is available)
1386      - flush standard & error msg unit before MPI termination
1387      - if debugMode, flush IO unit after printing msg
1388    o pkg/ctrl:
1389      - ctrl_unpack.F, ALLOW_GENARR3D_CONTROL code: fix missing argument in call
1390        to ctrl_set_unpack_xyz.
1391    
1392    checkpoint64 (2012/10/09)
1393    o pkg/shelfice
1394      - in mom_fluxform.F, mom_vecinv.F:
1395        CALL SHELFICE_V_DRAG(bi,bj,k,vFld,KE,KappaRU,vF,myThid)
1396        Bug fix KappaRU -> KappaRV
1397        does not change verification/isomip but may change other setups
1398        (presumably constant KappaRU=KappaRV)
1399      - fix diagnostics SHIU/Vdrag (thanks to Tom Millgate)
1400    o pkg/obcs:
1401      - fixed some indexing bugs in obcs_seaice_sponge.F
1402      - added obcs relaxation subroutines for HSALT and HSNOW
1403      - changes verification/seaice_obcs/results/obcs_seaice_sponge.F
1404  o pkg/seaice:  o pkg/seaice:
1405    - add "multicategory" parameterization for snow in analogy to ice,    - add "multicategory" parameterization for snow in analogy to ice,
1406      default is off for now.      default is off for now.

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