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revision 1.1743 by mlosch, Mon Sep 24 15:07:38 2012 UTC revision 1.2108 by dgoldberg, Mon Dec 22 17:18:31 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/streamice:
8      - shelfice_init_varia.F, shelfice_init_fixed.F, shelfice_readparms.F,
9        SHELFICE.h: move array shelficemass to init_varia, initialise
10        from array shelficemassinit, which is set in init_fixed and
11        has option to be set from file; introduce array
12        shelficeMassDynTend array, set thru file in init_fixed
13      - NEW FILE: shelfice_step_icemass.F: update shelficemass from either
14        shelfIceFreshWaterFlux and shelficeMassDynTend or H_streamice in
15        pkg/streamice
16      - shelfice_thermodynamics.F: call shelfice_step_icemass if
17        SHELFICEMassStepping = .true.
18      - shelfice_ad_diff.list: add new subroutine shelfice_step_icemass.f
19    
20    
21    checkpoint65h (2014/12/17)
22    o verification/global_ocean.90x40x15, global_ocean_ebm:
23      - update to generic controls.
24    o pkg/ctrl:
25      - ctrl_map_ini_genarr.F: test for igen>0
26      - ctrl_init_variables.F: add call to CTRL_MAP_INI_GENTIM2D.
27      - move gentim2d part of ctrl_map_ini_genarr.F to
28        new separate routine : ctrl_map_ini_gentim2d.F
29      - ctrl_cost_driver.F,ctrl_init.F ctrl_map_ini_genarr.F:
30        add time variable weights and cyclic controls (time mean,
31        seasonal cycle, etc) capabilities to gentim2d
32    o pkg/ecco:
33      - move reading of error, conversion to weights from
34        ecco_cost_init_fixed.F to ecco_toolbox.F (ecco_readwei)
35    o global_oce_llc90, cs32:
36      - activte sbo.
37      - CTRL_SIZE.h : add maxCtrlProc.
38      - activate the new genctrl capabilities.
39      - update following reorganization of global_oce_input_fields.tar.gz  
40    o pkg/ctrl/ctrl_ad_diff.list:
41      - add missing ctrl_init_rec.f
42    o tools/OAD_support/keepOriginal:
43      - add ctrl_init_rec.F
44    o model/src/the_main_loop.F, pkg/ctrl/ctrl_map_ini_genarr.F:
45      - avoid recomputations of xx_gentim2d_dummy.
46    o momentum diagnostics:
47      - move filling of diagnostics Um_Diss & Vm_Diss from mom_fluxform.F and
48        mom_vecinv.F to timestep.F (to include Smag-3D contribution).
49    o pkg/seaice/seaice_lsr.F:
50      - fix computation of BU/BV, make sure they are non-zero, only necessary
51        for cubed sphere exchanges and SEAICE_OLx/y>0.
52        This makes calling s/r fill_cs_corner_rl obsolete (removed).
53    o verification/global_ocean.cs32x15/input.seaice
54      - add test for strong implicit coupling and restricted addtive Schwarz
55        methods for LSR
56      - update results/output.seaice.txt
57    o verification/tutorial_global_oce_biogeo:
58      - AD & OAD set-up: switch off ALLOW_OLD_VIRTUALFLUX (like in fwd set-up)
59        and set PTRACERS_EvPrRn(1,2) to zero (for DIC & ALK);
60        update output_adm,_oadm,_tlm.txt
61    o pkg/dic:
62      - change default to "#undef ALLOW_OLD_VIRTUALFLUX" in DIC_OPTIONS.h
63      - add a stop when ALLOW_OLD_VIRTUALFLUX is defined and PTRACERS_EvPrRn
64        for tracer 1 & 2 is set (to avoid double counting of dilution effect).
65    o verification/tutorial_global_oce_biogeo:
66      - AD & OAD set-up: do not set PTRACERS_EvPrRn for tracer 1 & 2 since
67        dilution is already added by pkg/dic ALLOW_OLD_VIRTUALFLUX ;
68        update output_adm,_oadm,_tlm.txt
69    o eesupp/src:
70      - add fill_cs_corner_rl.F (_RL-copy of fill_cs_corner_rs.F)
71        and call it in seaice_lsr when using nonzero SEAICE_OLx/y
72    o pkg/seaice: introduce strongly implicit coupling, intended for stabilizing
73      LSR (following Hutchings et al. 2004)
74      - introduce zetaZ as a global variable (requires adjustments in
75        seaice_evp.F and seaice_jfnk.F) and compute analoguously to etaZ
76        in seaice_calc_viscosities.F
77      - new flag SEAICEuseStrImpCpl (default off)
78      - add new terms zetaZ*du/dy and zetaZ*dv/dx on both sides of the
79        momentum equations
80      - JFNK-solver (preconditioner) adjusted to allow using this method
81        (where it does not have any positive effect)
82    o pkg/seaice
83      - add overlap for restrictive additive Schwartz method also to LSR, but
84        turn it off by default (because it only seems to work for non-cubed
85        sphere/llc topologies)
86    o pkg/autodiff
87      - add extra exchanges in addummy_in_steppging also for mnc output
88    o pkg/seaice:
89      - add extra exchanges before dumping adjoint fields in seaice_ad_dump.F
90        to avoid stripes in the adjoint output (similar to addummy_in_stepping.F)
91    o pkg/obcs:
92      - add option to specify domain-connected piece Id along OB though files
93        (for now, only used to diagnose PhiVel; default =1 -> global correction)
94      - modify obcs_diag_balance.F to process each connected-part separately;
95        exclude OB where Id = 0 but keep the full divergence there (-> constant
96        Psi along this portion of OB and all inflow derived from grad(Phi))
97      - add example of OB-conect files in verification/so_box_biogeo/input.
98    o pkg/diagnostics:
99      - improve treatment of Open-Boundaries in Velocity-Potential calculation:
100      a) use non zero matrix element across OB and solve for Phi 1 grid point
101         outside OB (i.e, where tracer OBCS are applied).
102      b) global imbalance of inFlow/outFlow across OB: instead of modifying
103         velocity across OB, spread it uniformly along the OB in the RHS.
104    
105    checkpoint65g (2014/11/19)
106    o pkg/diagnostcis:
107      - add preconditioner off-diagonal factor (diagCG_pcOffDFac) as run-time param
108    o pkg/my82,pp81,kl10:
109      - fix ALLOW_3D_DIFFKR implementation (previously had no effect): use 3-D
110        field diffKr as background diffusivity to set minimum diffusivity value.
111    o pkg/seaice:
112      - add new parameter SEAICEuseEVPrev (for revisited EVP by
113        Bouillon et al 2013)
114      - add SEAICE_evpAlpha/Beta to namelist
115      - modify seaice_evp code to able to use SEAICEuseEVPrev. These changes
116        involve trivial re-ordering of divisions/multiplications that should not
117        have any effects, but ... they do change the results of lab_sea.hb87 so
118        that only 2 digits of agreement remain, in line with the general
119        instability/fragility of the evp-code. For now, I do not care and just
120        update the verification experiment
121    o pkg/ctrl : add generic pre-processing (xx_genarr2d_preproc etc)
122      - remove xx_genarr2d_numsmooth etc
123      - use xx_genarr2d_preproc etc instead
124      - carry out smooth_correl2D at initialization stage rather than during
125        time stepping.
126      - get smoothOpNb from xx_gentim2d_preproc
127    o global_oce_cs32 :
128      - add test of generic ecco capabilities.
129    o pkg/exf/exf_getsurfacefluxes.F :
130      - add to tmpUE/tmpVN rather than re-initializing them (conventional behavior).
131    o pkg/ctrl,ecco :
132      - omit un-necessary arguments to ctrl_cost_gen.F unless ECCO_CTRL_DEPRECATED
133        is defined.
134    o pkg/seaice: add diagnostics for Delta (deformation parameter)
135    o model/src:
136      - when ALLOW_3D_DIFFKR is defined, add a Warning if any of the vertical
137        diffusivity (background) is specified but ignored.
138    o verification:
139      - in testreport, convert hostname to lower case for default output dir name
140    o model, pkg : add useCTRL, useECCO parameters (on/off run time switch).
141    o pkg/dic: add modifications from Hajoon:
142      - add iron sedimentation flux function of the flux of PO4 out of bottom layer
143      - light attenuation: add self-shading effect by climatological Chlorophyll
144        (read from file).
145    o pkg/seaice/seaice_preconditioner.F : fix cpp flags, so that code also
146        compiles when SEAICE_ALLOW_DYNAMICS is undefined
147    o global_oce_llc90,cs32 : ecco_v4 verification exps now use separate
148        AUTODIFF_OPTIONS.h, CTRL_OPTIONS.h, ECCO_OPTIONS.h rather than
149        ECCO_CPPOPTIONS.h (i.e. replacing the deprecated, circumvoluted,
150        approach where CPP_OPTIONS.h includes an omnipotent
151        ECCO_CPPOPTIONS.h that superseeds pkgs '_OPTIONS.h').
152    o pkg/ctrl/ctrl_map_ini_genarr.F : include GMREDI_OPTIONS.h where
153        ALLOW_3D_KAPGM, ALLOW_3D_KAPREDI (to be added later) belong.
154    o pkg/seaice/SEAICE_SIZE.h : replace ALLOW_AUTODIFF_TAMC with ALLOW_AUTODIFF
155        to avoid needing AUTODIFF_OPTIONS.h anytime SEAICE_SIZE.h is included
156        (it seems that THSICE_SIZE.h, PTRACERS_SIZE.h have the same issue...)
157    o model/src, pkg/smooth, profiles, salt_plume, seaice, exf, ecco, ctrl :
158      add ECCO_OPTIONS.h, AUTODIFF_OPTIONS.h, CTRL_OPTIONS.h when needed
159      - ECCO_OPTIONS.h is needed when including ecco_cost.h, ecco.h
160      - AUTODIFF_OPTIONS.h is needed when including tamc.h, tamc_keys.h
161      - CTRL_OPTIONS.h is needed when including ctrl.h, optim.h, etc
162    o pkg/ctrl,ecco,exf :
163      - remove variables associated with NON-generic costs,
164        unless ECCO_CTRL_DEPRECATED is defined.
165      - remove NON-generic NON-obcs controls,
166        unless ECCO_CTRL_DEPRECATED is defined.
167    o pkg/ctrl : added ctrl_local_params.h
168    o pkg/ecco : added ecco_local_params.h
169    o verification : added ECCO_CTRL_DEPRECATED to most as and oad
170        experiments, which will progressively be removed once the
171        experiments are revised to use only generic controls/costs.
172    
173    checkpoint65f (2014/10/13)
174    o pkg/ctrl, ecco, seaice : minor changes in headers
175    o global_oce_llc90,cs32 : ecco_v4 verification exps now test generic
176        cost function and control capabilities added since checkpoint65c.
177    o pkg/ctrl: regroup all obcs ctrl variables in CTRL_OBCS.h.
178    o pkg/ecco: increase modularity and improve logic
179      - ecco_toolbox.F (new) : basic operations that are often used,
180        including ecco_zero, ecco_cp, ecco_cprsrl, ecco_diffmsk,
181        ecco_addcost, ecco_add, ecco_div, ecco_readbar.
182      - cost_gencal.F (new) : determine filnames and records.
183      - cost_genread.F, cost_generic.F : condense code using ecco_toolbox.
184      - cost_generic.F : use spzeroloc rather than hard-coded -9999,
185        and exploit the above functions leading to more compact code.
186      - cost_genread.F : rm un-necessary arguments, re-arrange args order.
187      - ecco_check.F, ecco_readparms.F : bring logic up to date (using_tpj,
188        using_ers, using_gfo, using_mdt is now only defined within gencost)
189    o pkg/ecco: extend generic cost capabilities
190      - pkg/ecco : added 3D gencost (ALLOW_GENCOST3D), added gencost
191        capabilities via gencost_preproc (+ _c,_i,_r related params),
192        gencost_posproc (+ _c,_i,_r related params), gencost_nrecperiod,
193        gencost_outputlevel arguments to cost_generic
194      - pkg/ecco/cost_genread.F (new) : interface between cost_generic
195        and active_read, making room for gencost_preproc to take effect.
196        Added preproc code ('climmon') to replace GENERIC_BAR_MONTH.
197      - pkg/ecco/cost_generic.F :
198        compute and store misfit maks*(model-data) in localdif that is
199        then used in cost and for output, output misfit if outlev.GT.0
200      - pkg/ecco/cost_averagesfields.F : depend on gencost_barskip
201        rather gencost_barfile for deciding whether to write barfile
202      - pkg/ecco/ecco_cost_driver.F : extract call to cost_profiles from cost_hyd
203      - pkg/ecco/ecco_cost_init_fixed.F : extract gencost weights from
204        ecco_cost_weights, re-activate ecco_summary, determine gencost_barskip
205      - pkg/ecco/ecco_summary.F : report gencost variables
206      - pkg/ecco/cost_gencost_customize.F : treat case of scatterometer costs
207    o pkg/sea/SEAICE_OPTIONS.h : add ALLOW_COST_ICE, ALLOW_SEAICE_COST_SMR_AREA
208    o pkg/ecco: internal re-organization
209      - resolve un-necessary dependancies within pkg/ecco and to pkg/ctrl
210        (rm includes of optim.h and ctrl.h, replace optimcycle with eccoiter,
211        mv relevant variables definition from ecco_cost.h to ecco.h,
212        make sure gencost routines only include ecco.h)
213      - throughout : add missing CCP switches, rm unused variables,
214        and rm un-necessary CPP switches
215      - throughout gencost routines : replace modelstartdate with
216        gencost_startdate when needed
217      - cost_bp_read.F : use arguments, instead of common blocs
218        so that it can be used also by (new) cost_gencost_bpv4.F
219      - ecco_init_varia.F : initialize RHOsumGlob_0, VOLsumGlob_0
220      - ecco_phys.F : compute etanFull
221      - ecco_readparms.F : rename using_topex as using_tpj, add
222        bpv4-grace to gencost list, initialize added parameters
223      - ecco_summary.F : include SIZE.h needed for augmented ecco.h
224    
225    checkpoint65e (2014/09/28)
226    o pkg/obcs:
227      - replaced the just-added CPP options with run-time variables
228        (see pkg/obcs/OBCS_PARAMS.h for details)
229    o pkg/obcs:
230      - add additional CPP options for sponge boundary layers
231        (see pkg/obcs/OBCS_OPTIONS.h for details)
232    o pkg/atm_phys:
233      - implement simple (obliquity only, assuming circular planet orbit)
234        seasonal cycle for incoming insolation ; used when run-time parameter
235        "select_incSW" is set to 1 ; by default (=0), uses old unchanged formula.
236    o pkg/exf, pkg/ecco, pkg/ctrl:
237      - add ctrlUseGen and .NOT.ctrlUseGen exclusive brackets
238      - activate gentim2d for xx_atemp,xx_aqh,xx_swdown,xx_lwdown,xx_precip
239      - implement gentim2d for xx_tauu, xx_tauv
240    o pkg/ctrl, pkg/ecco :
241      - fix and complement the generic controls implementation
242    o pkg/exf/exf_getclim.F, exf_getffields.F, exf_getsurfacefluxes.F,
243        pkg/shelfice/shelfice_thermodynamics.F,
244        verification/hs94.1x64x5/code_ad/ctrl_map_gentim2d.F,
245        verification/hs94.1x64x5/code_oad/ctrl_map_gentim2d.F :
246      - add weight in CTRL_GET_GEN calls
247    o pkg/ctrl :
248      - ctrl_get_gen.F : add weight as input parameter, and apply
249        it directly rather than using smooth_correl2Dw (to be retired).
250      - ctrl_map_gentim2d.F : add wgentim2d in CTRL_GET_GEN call
251    o pkg/ctrl :
252      - introduce run time switch ctrlUseGen (in ctrl.h, ctrl_check.F,
253        ctrl_init_variables.F, ctrl_readparms.F, ctrl_summary.F)
254      - re-activate ctrl_summary (call in ctrl_init.F)
255    o pkg/ctrl/ctrl_cost_gen.F :
256      - fix CCP brackets, remove un-necessary myiter, mytime
257    o pkg/ecco, pkg/ctrl :
258      - remove cost_genctrl.F (now pkg/ctrl/ctrl_cost_driver.F)
259      - remove cost_forcing_gen.F (now pkg/ctrl/ctrl_cost_gen2d.F)
260      - add ctrl_cost_driver.F (replaces pkg/ecco/cost_genctrl.F)
261      - add ctrl_cost_gen2d.F (replaces pkg/ecco/cost_forcing_gen.F)
262    
263    checkpoint65d (2014/09/15)
264    o pkg/ctrl/CTRL_GENARR.h, ctrl_readparms.F :
265      - add xx_genarr2d_bounds,xx_genarr3d_bounds,
266        xx_genarr2d_numsmooth, xx_genarr3d_numsmooth
267    o pkg/ctrl/ctrl_map_ini_genarr.F :
268      - remove compilation failure
269      - replace hard coded example
270      - use ctrl_map_ini_gen2D, 3D
271    o pkg/ctrl/ctrl_pack.F, ctrl_unpack.F :
272      - on/off switch based upon xx_genarr2d_weight,3d
273    o src/packages_init_variables.F :
274      - regroup pkg/estimation calls
275      - remove CTRL_MAP_INI, CTRL_MAP_INI_ECCO
276        (moved to ctrl_init_variables)
277    o cost/cost_init_varia.F :
278      - remove ecco_cost_init_varia
279        (moved to ecco_init_varia)
280    o ctrl/ctrl_init_variables.F :
281      - add CTRL_MAP_INI, CTRL_MAP_INI_ECCO
282      - add CTRL_MAP_INI_GENARR, SEAICE_CTRL_MAP_INI
283    o ctrl/ctrl_map_ini.F :
284      - remove ctrl_map_ini_genarr, seaice_ctrl_map_ini
285        (moved to ctrl_init_variables)
286    o ctrl/ctrl_map_ini_ecco.F :
287      - remove ECCO_PHYS (mv to ecco_init_varia)
288      - remove seaice_ctrl_map_ini (mv to ctrl_init_variables)
289    o ecco/ecco_ad_diff.list :
290      - add ecco_init_varia.f
291    o ecco/ecco_init_varia.F
292      - new routine
293    o pkg/streamice:
294      - move call to STREAMICE_INITIALIZE_PETSC from the_model_main.F
295        to streamice_init_fixed.F ; fix setting of STREAMICEisOn.
296      - from model/src, only call pkg/streamice routines if useStreamIce is TRUE.
297    o pkg/generic_advdiff:
298      - fix bug causing negatives in GAD_SMOLARKIEWICZ_HACK, introduced 8/8/2014.
299    o pkg/exf:
300      - exf_getffields.F : add xxg_atemp, xxg_aqh, xxg_swdown, xxg_lwdown,
301         xxg_precip capability
302      - exf_wind.F : no need for ALLOW_WSPEED_CONTROL cpp switch
303    o pkg/ctrl:
304      - ctrl_pack.F, ctrl_unpack.F : omit (un)packing of undefined xx_gentim2d
305    o model/src/load_fields_driver.F :
306      - move call to CTRL_MAP_GENTIM2D ahead of BULKF_FIELDS_LOAD, EXF_GETFORCING
307        so xx_gentim2d can be applied to e.g. exf fields in a timely manner.
308    o OpenAD verification experiments:
309      - Include explicitly AUTODIFF_OPTIONS.h, COST_OPTIONS.h, and CTRL_OPTIONS.h
310        in src files (to enable to skip the ECCO_CPPOPTIONS.h);
311        for now, only in pkgs used in OpenAD verification experiments.
312      - Change all except one (halfpipe_streamice) OpenAD experiments to use pkg
313        specific option file (AUTODIFF_OPTIONS.h, COST_OPTIONS.h & CTRL_OPTIONS.h)
314        instead of using ECCO_CPPOPTIONS.h (with all relevant options in it).
315        This applies to both TAF (*/code_ad/) and OpenAD (*/code_oad/) tests.
316    o OpenAD verification tests:
317      - finish removing ALLOW_AUTODIFF_OPENAD (replaced by ALLOW_OPENAD);
318      - finish replacing ALLOW_AUTODIFF_TAMC by ALLOW_AUTODIFF (except for
319        tape/storage which are specific to TAF/TAMC) in pkgs used in OpenAD exp.
320      - leave ALLOW_AUTODIFF_TAMC undef in OpenAD verification tests (*/code_oad/)
321        and remove local copy of "tamc.h" (needed only if ALLOW_AUTODIFF_TAMC).
322    o model/src & generic_advdiff:
323      - change hard-coded loop-range in S/R APPLY_FORCING_T/S to set T & S
324        forcing over 0:sNx+1, 0:sNy=1 (instead of just 1:sNx,1:sNy): Model
325        dynamics requires valid tracer forcing only over tile interior but, for
326        some diagnostics, may need to extend it over 1 point in tile halo region.
327      - in gad_calc_rhs.F, update calls to gmredi_x/ytransport to get valid
328        tendency over i,j_Min,Max range. This allows to simplfy i,j_Min,Max
329        setting in temp/salt/ptracer_integrate.F
330    o pkg/dic:
331      - multiply tracer tendencies by maskInC (if ussing OBCS) before updating
332        gchem tracers: this allows to skip the 2nd call to OBCS_APPLY_PTRACER
333        in gchem_forcing_sep.F
334    o pkg/autodiff & obcs:
335      - add storage of current OB values for U & V (was already done for T & S).
336    
337    checkpoint65c (2014/08/30)
338    o pkg/dic:
339      - take out of dic_atmos.F the initialisation part (corresponding to istate=0)
340        and move it to new S/R DIC_INI_ATMOS ; also simplify the dependencies for
341        AD compilers (but still a Pb with multi-threading and Ajoint dependencies).
342    o verification:
343      - new experiment testing OBCS and DIC pkgs, using params & output from
344        tutorial_global_oce_biogeo but limited to a sub-domain around Drake
345        passage: take OBCS from the last year of a 2 yrs simulation and initial
346        conditions from t=1.yr while keeping the same forcing.
347    o model/src:
348      - when allowFreezing=T, only reset below freezing initial Temp to Tfreezing
349        (at any k) if checkIniTemp is not set to FALSE (default checkIniTemp=T).
350    o pkg/diagnostics (Stats-Diags):
351      - re-write S/R DIAGSTATS_CALC (more similar to TARGET_NEC_SX part) to:
352        a) refine region where stats are computed, excluding where arrhFac=0 ;
353        b) fix missing interior mask (use with OBCS) in 3-D fields statistics;
354        c) extend regional stats over the region edges (for U or V pt location).
355    o pkg/gchem:
356      - add a (2nd) call to OBCS_APPLY_PTRACER in gchem_forcing_sep.F (needed since
357        pkg/dic is currently changing/updating ptracers values beyond the OB).
358    o verification (hs94):
359      - convert Held & Suarez external_forcing.F (from hs94.cs, with Sigma-coords
360        bits) to apply_forcing.F and undef USE_OLD_EXTERNAL_FORCING in experiments
361        hs94.cs-32x32x5 and tutorial_held_suarez_cs ; also use the same version of
362        apply_forcing.F in 2D hs94 (fwd, ad & oad) but keep LatLon hs94 unchanged.
363    o pkg/ptracers:
364      - implement Adams-Bashforth on pTracers (instead of on tracer tendency),
365        switched on by setting PTRACERS_doAB_onGpTr=F (default set to doAB_onGtGs)
366      - change exp4 secondary test (input.nlfs) to test AB on T & S & pTracer
367        with AB-2 code (so that it get tested).
368    o model/src:
369      - allow to apply Adams-Bashforth on Temp & Salt (instead of on gT,gS)
370        with AB-2 code (previously only available with AB-3 code).
371        Also move the code (call to ADAMS_BASHFORTH S/R) form thermodynamics.F
372        to temp/salt_integrate.F (since the 2nd part of gt/sNm1 update is done
373        there, by calling CYCLE_AB_TRACER).
374    o pkg/generic_advdiff:
375      - change Tracer argument (drop bi,bj indices) in S/R GAD_CALC_RHS,
376        GAD_C2_ADV_R, GAD_U3_ADV_R, GAD_C4_ADV_R, GAD_DIFF_R, GAD_BIHARM_R
377        + also in GMREDI_X/Y/RTRANSPORT ; and update corresponding calls in
378        S/R temp/salt/ptracers_integrate.F
379    o model/src & pkg/ptracers:
380      - remove common block variables gT,gS (in DYNVARS.h), except when
381         USE_OLD_EXTERNAL_FORCING is defined; update TAF storage accordingly.
382      - remove common block variable gPtr.
383    o model/src & pkgs:
384      - change gTracer (and/or tracer) argument (drop bi,bj indices) in S/R
385         ADAMS_BASHFORTH(2&3), CYCLE_(AB_)TRACER, FREESURF_RESCALE_G,
386         IMPLDIFF, SOLVE_TRIDIAGONAL & _PENTADIAGONAL, GAD_SOM_ADVECT,
387         GAD_ADVECTION, GAD_CALC_RHS, GAD_IMPLICIT_R, TIMEAVE_CUMUL_DIF_1T
388      + change accordingly all calling S/R.
389      - use local temperature/salinity/ptracer tendency array (without bi,bj)
390        in S/R temp/salt/ptracers_integrate.F
391    o pkg/seaice:
392      - move computation of stress contributions to rhsU/V in s/r seaice_lsr
393        to separate s/r seaice_lsr_rhsu/v in order to be able to re-use code
394      - make u/vIceC local variables if SEAICE_CGRID is defined only to be used
395        in seaice_lsr
396      - seaice_lsr.F: make local 4D arrays UXX, VYY, etc 2D
397        in s/r seaice_lsr_calc_coeffs
398    o pkg/mdsio:
399      - in MDS_READ/WRITE_FIELD, stop if file-name (+prefix) is too long
400        (e.g., > MAX_LEN_MBUF -90 ) or, in INI_MODEL_IO, if mdsioLocalDir is
401        too long (e.g., > MAX_LEN_FNAM/2 )
402    
403    checkpoint65b (2014/08/12)
404    o pkg/matrix:
405      - pass, as argument, updated tracer field to S/R MATRIX_STORE_TENDENCY_EXP
406    o model/src:
407      - fix initialisation of geothermalFile; compile geothermal-flux code in
408        natl_box verification experiment.
409    o model/src & pkg/down_slope:
410      - push the k loop inside S/R TIMESTEP_TRACER (now called outside the k loop).
411      - in dwnslp_apply.F, update tracer tendency instead of the future tracer
412        field and call S/R DWNSLP_APPLY before TIMESTEP_TRACER; this affects
413        results at machine truncation level: update output of experiments
414        global_ocean.90x40x15.dwnslp (FWD) and lab_sea.noseaicedyn (AD).
415    o pkg/diagnostics (Stats-Diags):
416      - do not cumulate the full volume when DIAGNOSTICS_FILL is
417        called with bibjFlg < 0 (no increment of the counter for 2D/3D diag);
418        This fix the mean statistics when DIAGNOSTICS_FILL is called multiple
419        times (but Min,Max and StD are still wrong).
420    o model/src:
421      - add geothermal flux forcing: read in ini_forcing.F as time-constant
422        field "geothermalFlux" applied in S/R APPLY_FORCING_T (apply_forcing.F)
423    o model/src:
424      - move CYCLE_TRACER calls from tracers_correction_step.F to temp/salt/ptracer
425        _integrate.F so that, when leaving S/R THERMODYANMICS, theta,salt and pTrac
426        arrays are already updated while adjustments (filters, conv.adjustment) are
427        still applied later, in S/R TRACERS_CORRECTION_STEP.
428    o model/src:
429      - store in common bloc array "rhoInSitu" the virtual potential temperature
430        anomaly that is used to compute geopotential: this make the atmos code
431        more similar to ocean code which already uses rhoInSitu in calc_phi_hyd.F
432    o pkg/seaice/seaice_lsr.F
433      - rename integer variable ilcall to ipass (that's what it is called
434        in the residual diagnostics
435      - change time stepping for NPSEUDOTIMESTEP > 2 (does not change the
436        default) for improved non-linear convergence of the first few steps
437      - adjust a few comments and add new ones to explain some of the store
438        directives
439    o pkg/generic_advdiff (& ptracers):
440      - re-work the code to check for valid advection scheme and for minimum
441        size of overlap (now stored in local common bloc in gad_advscheme.F)
442    o pkg/seaice: another attempt to make the adjoint work for sea ice dynamics
443      - re-initialize more variables in seaice_lsr: u/vIceC, u/vIceNm1
444      - add an auxilliary variable "bet" and fix store directives and keys in
445        seaice_lsr_tridiagu/v, this seems to do the trick (i.e. more or
446        less exact gradients in my tests); but there are still
447        recomputation warning (although gradients are sort of OK), when
448        SEAICE_LSR_VECTORIZE is not defined, so this flag and
449        SEAICE_LSR_VECTORIZE_ZEBRA are recommended for efficiency.
450      - update verification experiments lab_sea.
451      - change some comments in S/R seaice_calc_viscosities
452    o model/src:
453      - if staggerTimeStep=T, always apply exchange to velocity field in
454        do_stagger_fields_exchanges.F instead of in do_fields_blocking_exchanges.F
455        (independent of using multi-dim advection or not); no effect on FWD run
456        but affects AD results (at machine truncation level): update output of
457        experiment 1D_ocean_ice_column (ad: 12 digits), hs94.1x64x5 (ad,oad: 13.d)
458        and isomip (oad: 12.d).
459    o pkg/generic_advdiff:
460      - stop if doAB_onGtGs is set to FALSE but ignored
461      - refine warning related to stability of tracer time-stepping
462        regarding internal wave dynamics.
463      - setting of AdamsBashforth_T,S when doAB_onGtGs=F: remove condition
464        on staggerTimeStep & implicitIntGravWave (will now get a warning
465        if potentially unstable).
466    o pkg/kl10:
467      - add new pkg "kl10" for mixing due to internal wave breaking, from
468        http://www.sciencedirect.com/science/article/pii/S1463500310000144
469        (contribution from Jody Klymak), tested in verification experiment
470        verification/internal_wave/input.kl10/
471    o isomip experiment:
472      - test pkg/shelfice with Non-Lin Free-Surf in one of the FWD set-up
473        (input.htd) and update the output.
474    o cd_code experiments:
475      - use default cd_code options (#undef CD_CODE_NO_AB_MOMENTUM &
476        #undef CD_CODE_NO_AB_CORIOLIS) in experiments: cfc_example (fwd)
477        global_ocean.90x40x15 (ad & oad) and OpenAD (ad & oad) and
478        update the corresponding output.
479    o pkg/seaice:
480      - reduce the number of include files and store directives in
481        S/R seaice_lsr_tridiagu/v
482      - change the order of loops in one case in S/R seaice_lsr_tridiagv
483        (only for SEAICE_VECTORIZE_LSR_ZEBRA defined), which allows me to
484        get rid off one store directive (a TAF bug?)
485      - add one more instance of ifdef SEAICE_VECTORIZE_LSR_ZEBRA in
486        S/R seaice_lsr_tridiagv to change the loop range for consistency
487      - remove ilcall, m from parameter list of S/R seaice_lsr_tridiagu/v
488      - fix a bug that affects the JFNK solver: replace sNx/y by i/jMax in
489        S/R seaice_lsr_tridiagu/v (requires update of
490        offline_exf_seaice/input.dyn_jfnk)
491    
492    checkpoint65a (2014/07/27)
493    o model/src:
494      - Non-Lin Free-Surf in p/z coords: allows hFacW,S to be larger than
495        surrounding hFacC=1 @ edge of a step with different kSurfC on either side
496        (topo in p-coords, ice-shelf in z-coords); update output of experiments
497        tutorial_global_oce_in_p and isomip (both AD and OpenAD output).
498    o model/src:
499      - collect momentum forcing tendency into local 2-D array (passed as argument
500        to apply_forcing S/R); this simplifies mom. Forcing diagnostics and CD_CODE
501        parts in timestep.F (without CD_CODE_NO_AB_MOMENTUM defined = the default);
502        affects results at machine truncation level (e.g., if using OBCS_SPONGE).
503      - collect T & S forcing tendency into local 2-D array (passed as argument to
504        apply_forcing S/R); add 3-D diagnostics for temp & salt forcing tendency.
505        affects results at machine truncation level (e.g., ocean: if using
506        SHORTWAVE_HEATING ; atmos: if using FrictionHeating or (atm_Rq<>0) moist
507        correction due to vertical advection).
508      - update output of experiments: fizhi-cs-32x32x40 (13 digits),
509        global_ocean.cs32x15 (fwd: icedyn, seaice, thsice, all 3 @ 11d; adm & tml:
510        seaice_dynmix & thsice, fwd grd @ 3 & 8), hs94.1x64x5 (ad grd @ 13),
511        obcs_ctrl (ad & fwd grd @ 12 & 7).
512    o pkg/ptracers & diagnostics:
513      - use ptracers (short) name (instead of long one) to make ptracers diagnostics
514        title (to avoid some unexpected truncation); sort out ptracers diags units.
515      - collect ptracer forcing tendency into local 2-D array (passed as argument
516        to apply_forcing S/R); add 3-D diagnostics for ptracers forcing tendency.
517    
518    checkpoint65 (2014/07/18)
519    o pkg/fizhi:
520      - add parenthesis around fizhi tendencies in fizhi_tendency_apply.F: this
521        affects results at machine truncation level. Update output of experiments
522        fizhi-cs-32x32x40 (12 digits for cg2d) & fizhi-cs-aqualev20 (13 digits).
523    o pkg/seaice: more clean up
524      - rename TAF common block tapes to be more consistent and remove
525        unnecessary duplicates
526      - add store directives to remove more recomputations, but use smaller
527        tapes (and adjust keys) when SEAICE_LSR_ADJOINT_ITER is undefined.
528        The idea behind this flag is to reduce the memory footprint when the
529        adjoint of the LSR is not required. As of now, defining the flag
530        SEAICE_LSR_ADJOINT_ITER increases 4 common block tapes for 2D field by
531        a factor of SOLV_MAX_FIXED (=500 by default in SEAICE_SIZE.h).
532        For experiment offline_exf_seaice, this means on a linux box with gfortran
533        nearly a factor of 10 (but keep in mind there is mostly seaice code in
534        this experiment):
535        > size mitgcmuv_ad
536        text    data        bss     dec        hex
537        5100659 1216  220458952  225560827  d71c8fb
538        5339425 1200 1868783272 1874123897 6fb4dc79 (SEAICE_LSR_ADJOINT_ITER)
539        but only a moderate increase of 36% for global_ocean.cs32x15:
540        text    data        bss     dec        hex
541        6695027 1648 1014578664 1021275339 3cdf6ccb
542        6695203 1648 1382505320 1389202171 52cd8afb (SEAICE_LSR_ADJOINT_ITER)
543      - note: there are still recomputations in global_ocean.cs32x15 and
544        offline_exf_seaice and the gradient agreement changes (gets a
545        little worse) for global_ocean.cs32x15 (-> update output_adm.seaice.txt)
546      - in general, the AD gradients still are wrong
547    o OpenAD
548      - clean up code_oad/ directories somewhat by moving files
549        dontCompile, dontTransform, keepOriginal to OAD_support/
550    o model/src:
551      - using MOM fluxform and Non-Lin Free-Surf with momDissip_In_AB=F
552        (not currently tested): add dissipation terms before NLFS rescaling of
553        tendencies (previously done after).
554    o pkg/diagnostics:
555      - write stats-diags in ascii file with more digits (same as in monitor).
556    o pkg/down_slope:
557      - drop the bi,bj dimension of argument recip_hFac in S/R DWNSLP_APPLY; with
558        NLFS (not tested), use new recip_hFac value in order to conserve tracer.
559    o model/src:
560      - new file "apply_forcing.F" containing all the code previously in
561        external_forcing.F, but with new argument list: pass, as new argument,
562        the current level tendency array to update (instead of a direct update
563        of the common bloc array). Change the corresponding calls.
564      - add CPP option USE_OLD_EXTERNAL_FORCING (default is undef) to use
565        EXTERNAL_FORCING_U,V,T,S subroutines (for backward compatibility).
566    o pkg/seaice/seaice_lsr, a little bit of clean up
567      - rearrange some code blocks, so that now all calculations for
568        setting up the right-hand-sides done within one single block
569        (I find that easier to read and understand)
570      - rearrange freedrift-code to reduce the number of ifdefs
571      - adjust some indentations and comments
572    
573    checkpoint64z (2014/07/10)
574    o model/src and several pkgs:
575      - change argument list of all S/R called from external_forcing.F and
576        called from ptracers_forcing.F (renamed to ptracers_apply_forcing.F)
577        to pass, as argument, the current level tendency array to update
578        (instead of a direct update of the common bloc array).
579      - change also (in the same way) argument list of PTRACERS_APPLY_FORCING;
580      - rename taueddy_external_forcing.f to taueddy_tendency_apply.F
581    o pkg/seaice/seaice_lsr.F
582      - always initialize local arrays in seaice_lsr_tridiagu/v
583      - add more local tapes to seaice_lsr_tridiagu/v
584      - move storing u/vice(:,:,bi,bj) out of seaice_lsr_tridiagu/v, but
585        keep it in bi/bj loop; this seems to be essential
586      - gradients are still wrong but only by 4-7 orders of magnitude
587        instead of 15 orders of magnitude, lab_sea improves a little
588    o pkg/seaice
589      - (pkg/autodiff) remove storing/restoring of seaiceMaskU/V that
590        generates unnecessary code in seaice_lsr_ad
591      - add more store directives in seaice_lsr to avoid unnecessary code
592        in seaice_lsr_ad
593      - exclude some residual computations in seaice_lsr when
594        ALLOW_AUTODIFF_TAMC is defined in order to avoid unnecessary code
595        in seaice_lsr_ad
596      - add more storing, a new tape (model/src/the_main_loop.F) and
597        another key for SEAICE_LSR_VECTORIZE_ZEBRA (the local keys ilockey
598        and klockey should be checked by a specialist)
599      - modify ( define SEAICE_VECTORIZE_LSR and SEAICE_LSR_ADJOINT_ITER )
600        and update lab_sea after previous changes in pkg/seaice below
601    o pkg/autodiff:
602      - introduce useSmoothCorrel2DinAdMode, SEAICEapproxLevInAd, and
603        viscFacInAd : run time parameters allowing for adjoint switches
604        note : logic for useSmoothCorrel2DinAdMode is in ctrl_readparms.F
605    o pkg/ecco:
606      - introduce cost_gencost_boxmean.F that computes a box mean
607        temperature (for use in adjoint sensitivity studies).
608    o model/src/set_defaults.F : initialize viscFacAdj to 1.
609    o pkg/mom_common/mom_calc_visc.F:
610      - ifdef ALLOW_AUTODIFF then include viscFacAdj factor.
611    o pkg/seaice/seaice_summary.F:
612      - statement for SEAICEadjMODE now in autodiff_readparms.F
613    o pkg/seaice:
614      - remove some store directives and add new ones in an effort to get
615        finally rid off the recomputation warnings. This is successful
616        when SEAICE_VECTORIZE_LSR ***and*** SEAICE_LSR_ADJOINT_ITER are
617        defined (i.e. no extensive recomputation warnings left), but there
618        are still too many recomputations on the solver iteration level
619      - define SEAICE_VECTORISZE_LSR in offline_exf_seaice/code_ad/SEAICE_OPTIONS.h
620      - move definition of MPSEUDOTIMESTEPS into TAMC-block in
621        SEAICE_SIZE.h
622      - add a store directive in S/R seaice_calc_viscosities
623    o pkg/seaice (ITD code):
624      - fix definition of Hlimit for multi-threaded case
625      - use double precision arithmetic to compute Hlimit: this affects results;
626        update output of experiment seaice_itd.
627    o replace content of verification/seaice_itd
628      - instead of a 1D column use the configuration of offline_exf_seaice
629        to test the ice thickness distribution code with ridging
630      - this is a first shot at this experiment
631      - change of some defaults of ridging parameters SEAICEhStar (from
632        100 to 25) and SEAICEmuRidging (from 5 to 3) in seaice_readparms.F
633        and lot of new comments.
634    
635    checkpoint64y (2014/06/20)
636    o pkg/seaice/seaice_reg_ridge.F:
637      - modify the regularization of very small volumes of ice; only check
638        total volume HEFF, and do not apply correction to individual ice
639        classes because that leads to funny patterns in the heat and fw-fluxes
640        into the ocean. Adjust seaice_itd/results/output.txt
641      - replace nITD by SEAICE_multDim in loop-ranges
642    o pkg/exf:
643      - add code to process the case field period = -12. with UV interpolation.
644      - move debug print (formerly active when exf_verbose=T) from EXF_getFFieldRec
645        into S/R that calls it (i.e., exf_set_gen.F, exf_set_uv.F & obcs_exf_load.F)
646    o verification/global_with_exf:
647      - switch all fields period to -12. (was previously untested) in input/data.exf
648        (but keep secondary test ".yearly" unchanged); update the reference output.
649    o pkg/cal:
650      - new calendar type "noLeapYear" for 365 days calendar without any leap year.
651    o pkg/exf:
652      - new integer parameter "exf_debugLev" (default set to main model debugLevel)
653        to replace logical switch "exf_verbose"
654      - report in STDOUT when loading a new record (if exf_debugLev >= 3)
655    o pkg/sbo:
656      - update from Katherine Quinn: evaluate mass directly from density and SSH
657        (budget using Finite Volume method) instead of from bottom pressure.
658      - allow testreport to collect few selected SBO output ; tested in exp.
659        global_ocean.90x40x15 (after updating the results, to include SBO output).
660      - fix some multi-threading issues (in output part).
661    o model/src & most packages:
662      - always call {PKG}_READPARMS even if corresponding use{PKG}=F;
663      - in {PKG}_READPARMS, in case use{PKG}=F: add a call to new S/R
664        PACKAGES_UNUSED_MSG to print a weak warning when parameter file
665        "data.{pkg}" exist ; and leave the S/R (return) just after.
666      - more standard LAND pkg interface (land_init_fixed.F, land_check.F).
667        + call LAND_READPARMS from packages_readparms.F
668    o pkg/seaice:
669      - remove code that resets useThSice in S/R seaice_readparms and
670        replace it by a warning in S/R seaice_check
671      - remove parameter MULTDIM, replace with nITD and runtime
672        parameter SEAICE_multDim (still hard-wired to nITD if
673        SEAICE_ITD is defined)
674    
675    checkpoint64x (2014/05/24)
676    o verification/lab_sea:
677      - update adjoint and TLM output following changes to pkg/salt_plume
678      - un-do the update after putting back local recip_Cp in few places.
679    o pkg/salt_plume: modifications by An Nguyen:
680      - add capability to do brine rejection (salt-plume) as function of
681        volume+tracers (instead of only salinity tracer).
682      - conserve volume by exchanging volume from each kLev to above to
683        accommodate in-coming brine volume
684      - store surface and klev exchanged fraction + volume in 4 new 3-d arrays
685      - switch KPP surf buoyancy due to brine forcing to 3-d
686        (3 more 3-d arrays, 2 for SPforcing[T,S], 1 for boplume)
687      - add salt_plume_volfrac, salt_plume_apply, salt_plume_tendency_apply_t
688      - unrelatedly, also add ad-hoc capability to vary salt_plume scheme
689        in East/West Arctic.
690    o pkg/sbo:
691      - incorporate modifications from Katherine Quinn to enable the use of sbo
692        pkg in ECCO-v4 set-up ; remove SBO-TimeAve output ; add monitor-like
693        output for future testreport verification (unfinished).
694    o pkg/atm_phys:
695      - change diagnostics (AtPh_Trf & AtPh_Qrf) of DARGAN_BETTSMILLER S/R:
696        skip the reseting of t_ref & q_ref to initial t & q ; this preserve the
697        output of S/R CAPECALCNEW (Parcel temp & q) for diagnostics.
698    o pkg/seaice
699      seaice_calc_ice_strength.F: modify expression to avoid divisions
700        (affects truncation)
701      seaice_do_ridging.F: clean up the insectarium
702      - fix a bug that was compensated by areaScaling (-> remove areaScaling code)
703      - added SEAICEsnowFracRidge to redistributed snow (2nd bug)
704      - set closing/openingRate to zero where no extra iteration is need (3rd bug)
705      - add some debugging information and error messages (warnings)
706    o model/src: modifications relatd to atmosphere p*:
707      - Switch to more accurate p* coordinate slope term (calc_grad_phi_hyd.F)
708      - With p* or Sigma-P, use constant reference Pot.Temp (thetaConst) instead
709        of vertical profile tRef in geopotential background and anomaly.
710      - Acount for true p* correction in theta <-> T conversion in pkg/aim_v23
711        and pkg/atm_phys.
712      - Update FWD output of experiments: aim.5l_cs (x2), fizhi-cs-32x32x40,
713        fizhi-cs-aqualev20, fizhi-gridalt-hs, tutorial_held_suarez_cs, cpl_aim+ocn.
714    o pkg/seaice: fix a bug in seaice_prepare_ridging.F, forgot a sqrt
715    o pkg/ptracers: compute ptracer source/sink due to linear free surface.
716        not used right now, but can be used in BGC packages to fix conservation.
717    o pkg/dic, pkg/gchem: move tracer_meanarea to gchem, so it can be used by
718        other packages too.
719    o pkg/seaice/seaice_calc_ice_strength.F: replace SEAICE_rhoSnow by
720        SEAICE_rhoIce in the Rothrock (1975)-type strength calculations (bug fix)
721    o model/src:
722      - since we have several heat capacity (even in model/src), define "recip_Cp"
723        as local variable (no longer in common block) to avoid any confusion.
724      - add thetaConst in PARAMS.h (to be used with pStar or sigma-P coords).
725    o pkg/exf:
726      - from Jeff Scott: add option (#define EXF_CALC_ATMRHO) to calculate local
727        air density as function of air Temp, Humidity and atm pressure.
728    
729    checkpoint64w (2014/05/02)
730    o verification:
731      - update output_adm.txt files for experiment global_ocean.cs32x15 (seaice &
732        seaice_dynmix) and lab_sea (primary test & noseaicedyn): moving/changing
733        code from seaice_growth.F & seaice_advdiff.F to new ridging routines
734        seaice_reg_ridge.F seaice_do_ridging.F affects AD gradient
735        (down to 8-7 matching digits for global_ocean and 5-6 for lab_sea).
736    o model/src: for atmosphere in p* coords:
737      - store factor rStarFacC**atm_kappa (= pStarFacK) in common block
738      - implement more accurate p* coordinate slope term (in calc_grad_phi_hyd.F),
739        but not yet activated.
740    o pkg/seaice: fix restart problem for ITD with new ice strength parameterisation:
741      - move computation of opnWtrFrac = 1-AREA to before computing ice strength
742      - this changes the results (but not for any verification experiment, because
743        none tests this), but avoids having an extra field in the restart files
744    o pkg/seaice: remove global variable TICE (not needed)
745      - replace by TICES or local variable where necessary (cost_seaice_test,
746        seaice_diagnostics_state)
747      - move copying TICE to TICES from seaice_check_pickup to seaice_read_pickup
748      - use specific read/write routines for reading and writing individual leves
749        of a multilevel field
750    o pkg/ctrl & model/inc:
751      - move additional anomaly fields of control vars (related to options:
752         ALLOW_KAPGM_CONTROL, ALLOW_KAPREDI_CONTROL and ALLOW_BOTTOMDRAG_CONTROL)
753        from DYNVARS.h into new header file: CTRL_FIELDS.h
754    o pkg/seaice: some small modifications to the ridging code
755      - make fw2ObyRidge a global variable and add the freshwater flux to
756        seaice_growth
757      - pass actual thickness from seaice_prepare_ridging, so that it is
758        computed only in one place and compute it in the same way as in
759        seaice_growth
760      - initialise more fields in seaice_do_ridging that where cause floating
761        point exceptions over land
762    o pkg/seaice: preparations for ridging code and first real ridging code
763      - move most of "PART 1" of S/R seaice_growth into a new and separate
764        S/R seaice_reg_ridge that will both regularize the state variable after
765        advection call the actual ridging routine;
766      - requires to make 5 fields global fields: d_HEFFbyNEG,d_HSNWbyNEG,
767        d_AREAbyRLX,d_HEFFbyRLX,saltFluxAdjust;
768      - remove ridging code from seaice_advdiff
769      - clean up remaining part 1 of seaice_growth in an attempt to make it
770        more readable (this is probably subjective)
771      - call seaice_itd_redist once in the initialisation phase to have the initial
772        conditions in the correct category
773      - finally: add new ridging routine for ITD code
774    
775    checkpoint64v (2014/04/11)
776    o pkg/ecco:
777      - add runtime parameters mdt[start,end]date[1,2]
778      - rename variable "tpmean" as "mdt" and "topexmeanfile" as "mdtdatfile"
779    o pkg/seaice:
780      - make deltaC a global variable, so that it can be used in ridging code
781      - first step towards ridging: introduce new routines that compute
782        ice strength based on ridging parameters
783      - add diagnostic for HSNOWITD
784      - add opnWtrFrac as a global variable (required for ridging scheme)
785    o pkg/salt_plume + pkg/seaice/seaice_growth.F
786      - add SALT_PLUME_IN_LEADS flag to activate pkg/salt_plume only when ice
787        AREA exceeds a threshold (code contributed by I.Fenty in 2011)
788    o verification/hs94.1x64x5:
789      - leave ALLOW_AUTODIFF_TAMC undefined in code_oad/AUTODIFF_OPTIONS.h
790      - do not use ECCO_CPPOPTIONS.h anymore for TAF & OpenAD Adjoint tests.
791    o autodiff:
792      - Start to include explicitly AUTODIFF_OPTIONS.h, COST_OPTIONS.h,
793        and CTRL_OPTIONS.h in src files (to enable to skip the ECCO_CPPOPTIONS.h)
794        For now, only in pkgs used in verification/hs94.1x64x5.
795      - Replace ALLOW_AUTODIFF_TAMC by ALLOW_AUTODIFF (except for tape/storage
796        which are specific to TAF/TAMC).
797      - Replace ALLOW_AUTODIFF_OPENAD by ALLOW_OPENAD:
798        since ALLOW_OPENAD is defined in PACKAGES_CONFIG.h (any time pkg/openad
799        is compiled), this simplifies/reduces which *_OPTIONS.h file to include.
800      - OpenAD: change Makefile to generate the appropriate AD_CONFIG.h when
801        building mitgcmuv_ad (make adAll).
802    o pkg/ecco:
803      - cost_gencost_seaicev4.F:
804         reformulate proxy cost as function of sst and local param SEAICE_freeze
805         change cost names from siv4-[sst,vol] to siv4-[deconc,exconc]
806      - add stop statement if old names siv4-[sst,vol] are used
807      - add snapshots + cost reports for atmospheric longwave
808      - remove factor 0.1 in front of wtau[u,v]
809      - replace never used flag ALLOW_TMI_COST_CONTRIBUTION with
810         ALLOW_TMI_SST_COST_CONTRIBUTION
811    o pkg/atm_phys:
812      - add some diagnostics for Short-wave and for convection S/R.
813    o pkg/seaice/seaice_growth:
814      - fix a bug in the lateral melt parameterization for SEAICE_ITD
815        in seaice_growth; tempFrz needs to be computed inside the i/j-loop
816      - rearrange loop order for better vector code in the same code block
817      - rewrite the floeDiameter formula to have fewer divisions
818      -  (miraculously) none of this changes the results of seaice_itd
819    o pkg/smooth:
820      - move param smooth2Ddiffnbt to pkg/ecco
821    o pkg/salt_plume:
822      - salt_plume_frac.F:
823         clean up local param names
824         reformulate (1-frac) to frac; original 1-frac was based on swfrac code
825    o pkg/rw:
826      - add RS version of S/R READ_MFLDS_LEV.
827    o pkg/streamice:
828      - fix the restart test by writing/reading pickup_streamice files.
829    o pkg/seaice:
830      - refine checks for jfnk-related parameters
831      - comment out if statement with SEAICEuseIMEX parameter as long as there
832        is no IMEX code to avoid confusion and surprises
833    
834    checkpoint64u (2014/03/07)
835    o verification/MLAdjust:
836      - rename secondary test suffix:
837         1.leith  -> A4FlxF  + switch to flux-form & add side-drag
838         0.leithD -> AhFlxF  + switch to flux-form
839         0.smag   -> AhVrDv  (use Vorticity-Div. visc form) + add side-drag
840         0.leith  -> AhStTn  (use Strain-Tension visc form) + add side-drag
841    o pkg/mom_vecinv:
842      - remove unused arguments from S/R MOM_VI_HDISSIP & MOM_HDISSIP (as it used
843        to be before mom_calc_visc.F)
844      - skip the call to MOM_CALC_TENSION & MOM_CALC_STRAIN if not needed.
845      - add 2nd copy of vort3 & strain that knows about lateral BC (free/no slip):
846        this is simpler for the adjoint and for diagnostics.
847    o model/src + pkg/momentum:
848      - add input files for  2-D additional Western and Southern cell-edge wall
849         (e.g., to add "thin-wall" where it is =1).
850      - fix sideDrag option for thin-walls with Non-Lin Free-Surf
851        using 2nd hFacZ that is computed from initial (fix domain) hFac
852      - known limitations of thin wall implementation: not yet coded for sigma
853        coords; not working with CD-scheme neither.
854    o pkg/seaice:
855      - rename recently introduced parameters from (wrong name) AB to
856        BDF (backward difference time discretisation)
857      - retire runtime parameters SEAICEuseAB2, SEAICE_abEps
858    o tools/adjoint_options:
859      - remove setting of "OPENAD=true" (now set by command line "genmake2 -oad")
860    
861    checkpoint64t (2014/02/01)
862    o pkg/ecco
863      - add compile flag ALLOW_GENCOST_TIMEVARY_WEIGHT in ECCO_OPTIONS.h and
864        runtime logical flag gencost_timevaryweight to read daily sea-ice sigma
865      - replace hard-coded record number and period which only work for monthly
866        with read-in runtime param that works for other periods (month,day,year)
867    o pkg/thsice
868      - corrected store directive fixes thsice adjoint gradient checks
869    o genmake2 & testreport:
870      - add genmake2 option "-oad" to generate a Makefile for OpenAD built and
871        in this case, use tools/adjoint_options/adjoint_oad as default AD optfile.
872        Update testreport accordingly. No need to set "export OPENAD=true"
873        in adjoint_options/adjoint_oad anymore (will be removed later).
874    o pkg/shelfice:
875      - put T & S shelfice forcing into model surfaceForcing_T,_S (for now,
876        only if SHELFICEboundaryLayer=F); Change model/src/external_forcing.F
877        so that surface forcing applies to k=kSurf if using pkg/shelfice.
878    o pkg/ctrl, pkg/grdchk, pkg/ecco:
879      - Changes to make GENARR more modular (i.e. invisible if not used)
880    o model/src/temp_integrate.F and salt_integrate.F
881      - re-include store directives that were removed on Dec 27th.
882    o model/src/external_forcing_surf.F
883      - add storage directives for EmPmR and PmEpR to avoid recomputation of
884        seaice_model in the adjoint that is problematic when seaice_model is
885        turned off in the adjoint. The resolved issue dated back to July when
886        EXTERNAL_FORCING_SURF call was moved.
887        Update global_ocean.cs32x15/*/output_adm.seaice_dynmix.txt accordingly.
888    o pkg/exf/exf_check.F
889      - fix a small bug again (originally found by Wentao Liu, now found again)
890      - streamline error output
891    o pkg/streamice and aim_v23:
892      - replace a few "_EXCH_XY_RL (" with "_EXCH_XY_RL(", so that
893        Apple's /usr/bin/cpp knows what to do:
894        Apple LLVM version 5.0 (clang-500.2.79) (based on LLVM 3.3svn)
895        Target: x86_64-apple-darwin13.0.0
896    
897    checkpoint64s (2014/01/05)
898    o tools/adjoint_options:
899      - switch to fastopt.net TAF server (instead of default fastopt.de) for
900        AD optfiles adjoint_diva & adjoint_f95 (similar to adjoint_default).
901    o model/src:
902      - remove some unnecessary TAF storage directives in forward_step.F and
903        in dynamics.F (note: not always removed by TAF, e.g., double storage
904        of kappaRU,kappaRV in former version of dynamics.F).
905    o model/src & pkg/ptracers:
906      - call directly GAD_IMPLICIT_R & IMPLDIFF + DWNSLP_APPLY from temp_integrate.F
907        salt_integrate.F and ptracers_integrate.F (instead of from thermodynamics.F)
908        and remove ptracers_dwnslp_apply.F & ptracers_implicit.F
909      - call MATRIX_STORE_TENDENCY_EXP for each tracer (in ptracers_integrate.F)
910      - add fZon & fMer as output argument of S/R GAD_CALC_RHS.
911      - update TAF AD-output of experiments global_ocean.90x40x15 (13 for AD-grad).
912    o useSingleCpuInput separates single-CPU input from single-CPU output;
913        for now only implemented for in exf_interp_read.F
914    o verification/advect_xy:
915      - fix missing EXCH call in local version of ini_salt.F and update output.
916    o momentum diagnostics:
917      - fix which deltaT is used in Total-Tendency diagnostics.
918      - fix typo in diagnostics for momentum tendency from AB.
919    o pkg/seaice/seaice_lsr.F: fix an initialisation bug for the
920        SEAICE_VECTORIZE_LSR_ZEBRA option that lead to NaNs on a NEC-SX8
921    
922    checkpoint64r (2013/12/08)
923    o verification/*/results:
924      - Update reference output of experiments that were passing with just 13 digits
925         (make it easier to detect future changes in results)
926    o model/src & pkg/ptracers:
927      - move calls to GAD_ADVECTION (Multi-Dim advection) from thermodynamics.F to
928        inside temp_integrate.F and salt_integrate.F and from ptracers_advection.F
929        to inside ptracers_integrate.F ; remove ptracers_advection.F
930    o coupling interface pkgs:
931        [atm_compon_interf, ocn_compon_interf & atm_ocn_coupler]
932      - change the config check to test the agreement of Ocean Depth
933        with ATM land/sea mask (instead of ATM orography);
934      - send to coupler the number of coupler time-steps to do for this run:
935        this allows to check for consistency and don't need anymore to be
936        specified in parameter file "data";
937      in coupler:
938      - check consistency of RunOff map versus Ocean Depth and ATM land/sea mask.
939      - improve report to log-file of config setting (pass log-file unit to few S/R)
940    o pkg/compon_communic:
941      - add coupling send/receive for non-tiled integer vector;
942      - add S/R to check and stop if any proc has an error (similar to
943        eesupp/src/stop_if_error.F but single thread and across Comm_World).
944    o pkg/exch2:
945      - in exch2*_get_rx[1,2]: use new list "W2_tileIndex" to replace search
946        through list of all tiles my proc owns.
947    o model/src:
948      - AUTODIFF only: in calc_adv_flow.F, recompute rTransKp (instead of copying
949        from rTrans) to simplify dependencies (no need to store rTrans anymore in
950        calling S/R); this affects AD results at machine truncation level:
951        update AD-output (TAF) of experiments: 1D_ocean_ice_column,
952        bottom_ctrl_5x5 & obcs_ctrl (12 digits for AD grad, same FWD grad).
953    o tools/build_options:
954      - simplify Warnings options (-ieee & -devel cases) in linux_amd64_gfortran
955    o coupling interface pkgs:
956        [compon_communic, atm_compon_interf & ocn_compon_interf]
957      - move declaration of local array "ibuf" out of header file "CPLR_SIG.h"
958        to each S/R that needs it; remove un-used variables.
959      - change component tile registration (cpl_register.F in both compon_interf
960        and mitcomponent_tile_register.F) to pass the full list of tiles
961        information (including bi,bj) in 1 vector (instead of in a bi,bj matrix).
962      - with pkg/exch2: adopt the same convention used for I/O to define mapping
963        towards coupler global array (unless W2_useE2ioLayOut=F):
964         a) can now use different tiling between atm & ocn comp.
965         b) no needs to modify the run-Off map when changing tiling (was needed
966            even if using the same tiling between atm & ocn).
967         c) will allow to run with blank-tiles in 1 component (e.g., for ocean
968            full land tiles); not yet tested.
969      - check for valid mapping from comp. tile to coupler global array
970      - improve report of tile registration results to log file.
971    o pkg/exch2:
972      - in eesupp/src/eeboot.F: move call to W2_EEBOOT before Coupler
973        tile-registration (CPL_REGISTER);
974      - activate (un-comment) definition and setting of "W2_tileIndex" list to
975        store the local bi,bj indices of each tile;
976      - also print bi,bj in local report to log file;
977      - fix pkg/debug/debug_cs_corner_uv.F for the case nSy > 1 (left from
978        Jun 2009 modif of pkg/exch2).
979    o testing on baudelaire:
980      - run 2 tests at a time: no significant slow down (since enough cpu) and
981        get the full set of test done earlier
982      - switch the ifort test to "-devel" ; run the OpenAD test everyday.
983    o model/src/thermodynamics.F and routines called from it:
984      - pkg/gmredi: gmredi_residual_flow.F (replacing gmredi_calc_uvflow.F &
985        gmredi_calc_wflow.F) to update eulerian velocity (input) into residual
986        velocity (outp) by adding bolus velocity.
987      - model/src: calc_adv_flow.F (replacing calc_common_factors.F) to compute
988        mass transport from velocity + lateral grid cell area
989      - rename calc_gt.F to temp_integrate.F (includes call to TIMESTEP_TRACER)
990      - rename calc_gs.F to salt_integrate.F (includes call to TIMESTEP_TRACER)
991     in thermodynamics.F
992      - remove k from thermodynamics.F and move it to temp_integrate.F
993        salt_integrate.F and ptracers_integrate.F (now done inside the tracer
994        loop).
995      - compute locally (in thermodynamics.F) 3-D velocity field that is used to
996        advect tracers; pass it as argument to GAD_ADVECTION, GAD_SOM_ADVECT,
997        PTRACERS_ADVECTION, TEMP_INTEGRATE, SALT_INTEGRATE, PTRACERS_INTEGRATE,
998        GAD_IMPLICIT_R and PTRACERS_IMPLICIT
999      - update AD-output (TAF & OAD) of experiments: 1D_ocean_ice_column,
1000        global_ocean.90x40x15, tutorial_global_oce_biogeo and
1001        tutorial_tracer_adjsens (+ TLM output).
1002    o tools/OAD_support and (verification/*/) code_oad:
1003      - OAD_support/cb2mGetModules.csh: add PACKAGES_CONFIG.h in header file to
1004        module conversion ; remove unneeded CPP_EEOPTIONS.h.
1005      - code_oad/CPP_OPTIONS.h: remove PACKAGES_CONFIG.h and use a more standard
1006        version (closer to model/inc/CPP_OPTIONS.h).
1007    o model/src:
1008      - remove parameter "useOldFreezing" from PARAMS.h and push it to the
1009        retired list of parameters (routine FREEZE has been replace by surface
1010        freezing (10.yrs ago) and by pkg/frazil (interior freezing).
1011    o pkg/gmredi:
1012      - add option (GM_CALC_TRANSP_FROM_VEL) to compute transport directly from
1013        velocity (same scheme but affects machine truncation) for GM_AdvForm.
1014      - update output of FWD experiments: front_relax.bvp,
1015        global_ocean.90x40x15.dwnslp, global_ocean.cs32x15 and ideal_2D_oce.
1016    
1017    checkpoint64q (2013/11/17)
1018    o verification:
1019      - generate new output on baudelaire (gfortran, -ieee) for OpenAD experiments
1020        tutorial_global_oce_biogeo and global_ocean.90x40x15.
1021      - generate new output (growth & melt) for seaice_itd experiment after
1022        updating the input pickup_seaice files (previously wrong).
1023    o pkg/cost:
1024      - define a "final cost function" for each tile, and use GLOBAL_SUM_TILE_RL
1025        (instead of _GLOBAL_SUM_RL) to get the final cost from all procs & threads:
1026        o this fixes global-sum value if multi-threads (since GLOBAL_SUM_RL
1027          cannot be applied to var in common block).
1028        o allows to get results independent of tile-per-proc setting (if using
1029          slower GLOBAL_SUM_SEND_RECV option).
1030      - update accordingly: seaice_cost_final.F, shelfice_cost_final.F,
1031        thsice_cost_final.F and ecco_cost_final.F (this one affects lab_sea
1032        forward gradients: update output).
1033      - update */code_oad/externalDummies.F by adding dummy GLOBAL_SUM_TILE_RL
1034        S/R and, for most exp., also comment out GLOBAL_SUM_R8.
1035    o pkg/mom_common:
1036      - move to pkg/mom_common and model/src (previously in tutorial_deep_convection
1037        code) 2nd version of isotropic 3-D Smagorinsky code interface: strain and
1038        viscosity are locally declared in dynmics.F and pass as argument to CALC_GW;
1039        ensure that all field value that are used are set.
1040    o tutorial_deep_convection (smag3d):
1041      - add missing scaling in mom_calc_smag_3d.F;
1042      - set smag3D_coeff in input.smag3d such that results do not change.
1043    o pkg/dic:
1044      - change dic_cost.F to compute cost on each tile first and then apply
1045        GLOBAL_SUM_TILE_RL: this affects forward gradient of AD experiments
1046        tutorial_dic_adjoffline & tutorial_global_oce_biogeo; update output.
1047      - remove kLev argument and use GLOBAL_SUM_TILE_RL in tracer_meanarea.
1048    o eesupp/src & pkg/mdsio:
1049      - remove gather/scatter_vector.F (from eesupp) and mdsio_read/writevector.F
1050        (from pkg/mdsio) since they are no longer used for tape IO.
1051      - move simple C subroutine "setdir.c" from pkg/compon_communic to eesupp/src
1052        (+ keep a copy in pkg/atm_ocn_coupler).
1053    o verification/isomip:
1054      - split domain in 8 squared tiles (instead of just 2) for FWD, AD & OAD tests.
1055    o tools/build_options:
1056      - optfile linux_amd64_ifort11, fast (no ieee) case:
1057        to get a working restart for all experiments, add "-fp-model source"
1058        to FOPTIM (also remove "-opt-streaming-stores auto" <- this is the default).
1059    
1060    checkpoint64p (2013/10/20)
1061    o pkg/autodiff:
1062      - adread_adwrite.F: when type and length do not match ALLOW_AUTODIFF_WHTAPEIO
1063        criteria, return to simple (default) tape IO format.
1064    o pkg/mdsio (+ eesupp/src):
1065      - rewrite/simplify tape-IO S/R (new S/R MDS_READ/WRITE_TAPE replace
1066        previous MDSREAD/WRITEVECTOR) with 2 array argument from each type (R4/R8);
1067      - fix globalFile and singleCpuIO options using simpler global mapping.
1068      - new pairs of scatter/gather vector S/R (one for each type, generated from
1069        template) corresponding to simpler global mapping.
1070      - adread_write.F: switch to new S/R (but leave old calls commented) and write
1071        to globalFile when parameter globalFiles is set to True.
1072      - switch on useSingleCpuIO in AD experiments: global_ocean.90x40x15 & isomip.
1073    o pkg/autodiff:
1074      - adread_adwrite.F: add a hack for RS arrays (when RS=real*4);
1075        with ALLOW_AUTODIFF_WHTAPEIO defined, since corresponding (real*4) is
1076        missing, just add a STOP if array type do not match.
1077    o pkg/exf:
1078      - to allow to use seaice-fraction from pkg/exf in other pkgs than pkg/seaice:
1079         rename CPP option EXF_ALLOW_SEAICE_RELAX to EXF_SEAICE_FRACTION
1080         and rename array obsSIce to exf_iceFraction.
1081    o tutorial_deep_convection:
1082      - add 1rst version of isotropic 3-D Smagorinsky code (from Louis-Philippe),
1083        for now all in this exp. code dir.
1084      - add secondary test using Smag-3D viscosity (keep very low backgroud visc for
1085        testing) and flux-limter advection scheme for Temp. (no explicit diffusion).
1086    o eesupp/src:
1087      - added SINGLE_DISK_IO option because reading of parameter files on
1088        very large number of processors did not work with existing set-up
1089    
1090    checkpoint64o (2013/09/25)
1091    o pkg/atm_phys & atm_compon_interf:
1092      - allows for coupling of gray-atmosphere (atm_phys) with ocean.
1093    o tools/build_options:
1094      - switch from "-fPIC" to "-mcmodel=medium" in optfiles: linux_amd64_gfortran
1095        & linux_amd64_ifort11 and in linux_amd64_g77 & linux_amd64_open64 also
1096        remove CPP setting (was identical to genmake2 default).
1097    o pkg/gmredi & model/src: Some updating and work done on the residual model.
1098      - created new file model/src/calc_eddy_stress.F to calculate the eddy stress.
1099      - fixed up the calculation of the eddy stress and how it is added to the
1100        external forcing via taueddy_external_forcing.F
1101      - at the moment, it is very experimental and only works with the variable eddy
1102        diffusivity calculated in gmredi_k3d.F
1103    o pkg/seaice/seaice_check.F: add a check to catch the case of specifying
1104        lw/swfluxfile instead of lw/swdownfile in data.exf together with pkg/seaice
1105    o testreport (& tools/do_tst_2+2):
1106      - for MPI test, set default COMMAND to 'mpirun -v -np TR_NPROC ./{executable}'
1107    o tools/build_options: linux_amd64_gfortran & linux_amd64_ifort11:
1108      - remove CPP='cpp -traditional -P' (this is genmake2 default)
1109      - add switch (for big setups) to use 'medium' memory-model (but leave it
1110        commented out for now). Note: needed with FC 19 to compile big setups.
1111    o pkg/atm_compon_interf:
1112      - regroup per field origin (model & pkgs) the coupling storage routines
1113         (which accumalate in time each coupling field)
1114      - move bi,bj loops inside atm_store_my_data.F and store also wind-stress;
1115        update accordingly + simplify aim_do_physics.F
1116    
1117    checkpoint64n (2013/08/26)
1118    o pkg/bbl:
1119      - update formulation to reduce dispersion of tracer properties in bbl
1120      - replaced horizontal and vertical transport parameters with velocities
1121      - changes results for verification/global_with_exf.yearly
1122    o verification/halfpipe_streamice:
1123      - change to matrix construction; update both Fwd & AD output.
1124    o verification/tutorial_tracer_adjsens:
1125      - OpenAD test: switch to vector-invariant momentum since fluxform with
1126        rStar causes problems with OpenAD; update output.
1127    o tools:
1128      - genmake2: define a common prefix for all temp-file names ; move them
1129        to local /tmp disk (but would be easy to move them back);
1130      - xmakedepend: apply the same switch for temp-files.
1131    o pkg/offline:
1132      - changes for use with rStar (NLFS): assume that we continue to provide
1133        UVELMASS/hFacW_ini & VVELMASS/hFacS_ini (hFacWi,S_ini as written in grid
1134        output files) and apply r* scaling at each time-step (function of the time
1135        varying Eta field); use normal pickup files (needed for restart with NLFS).
1136    o adjoint with OpenAD:
1137      - move OpenAD-specific files from verification/OpenAD/code_oad_all to a new
1138        package openad.  This package has to be compiled for all runs with OpenAD
1139        instead of specifying code_oad_all as a modification directory.
1140      - link the fortran templates from tools/OAD_support to the build directory
1141        for preprocessing to avoid conflicts between different setups compiled
1142        simultaneously and simplify cleanup.
1143    o pkg/exf:
1144      - in exf_getforcing.F: comment out most of the EXCH calls (fields used by
1145        main model or other pkgs are exchanged in EXF_MAPFIELDS).
1146    o model/src:
1147      - do_stagger_fields_exchanges.F: skip EXCH calls when using pkg/offline
1148        (similar to do_fields_blocking_exchanges.F).
1149    o tools/genmake2:
1150      - remove TAF output src code just before calling staf (when not doing a fresh
1151        built, will stop if things go wrong with staf).
1152      - fix target "adobj" (left from TAF version-2 transition)
1153    o pkg/diagnostics:
1154      - add a parameter to track the status of pkg/diagnostics activation;
1155        this replace/extend the use of logical param "settingDiags" (to check
1156        when adding diag to the list) to also check any DIAGNOSTICS_[]FILL* call.
1157        New S/R to print error message and stop when pkgStatus is not right.
1158      - to try: add a warning when "data.diagnostics" exist but useDiagnostics=F.
1159    
1160    checkpoint64m (2013/08/13)
1161    o model/inc:
1162      - move FCORI_MACROS.h from PARAMS(_MACROS).h to GRID_MACROS.h (left from
1163        8 yrs ago modif when Coriolis arrays were moved from PARAMS.h to GRID.h)
1164    o pkg/kpp & aim_v23:
1165      - only call DIAGNOSTICS_FILL when useDiagnostics=TRUE.
1166    o pkg/seaice:
1167      - restore (last time on 2011/12/24) ability to compile pkg/seaice with
1168        undefined pkg/exf ALLOW_ATM_TEMP or ALLOW_RUNOFF CPP-options.
1169      - only call DIAGNOSTICS_FILL when useDiagnostics=TRUE.
1170    o eesupp/src:
1171      - fix check for overlap-size argument (myOLn.GT.MAX_OLY_EXCH)
1172        in exch1_rx[_ad].template (thanks to Francois Lefeuvre report).
1173    o switch to TAF version-2:
1174      - add flow directives to "freeze" naming convention for ad-routines that
1175        are used in I/O routines of adjoint state and associated common blocks
1176        that are used in adcommon.h (backward compatible with version-1)
1177      - update all ad-optfiles (in tools/adjoint_options + few local to some
1178        verification exp) to switch to latest TAF version (currently 2.5.5);
1179        merge "*_mpi" adoptfiles into the corresponding non-mpi (but commented
1180        out except for diva).
1181      - the major change with TAF version-2 is that both the differentiated
1182        routines and the forward routines (new) are returned as part of the TAF
1183        output source code. Update genmake2 accordingly.
1184      - new output for AD experiment tutorial_global_oce_biogeo (better AD gradient
1185        with version-2 when compared to TLM or FWD gradient); other experiments
1186        output show minor changes (machine truncation level); update the few AD &
1187        TLM output with 12 matching digits only (some prior to version-2 switch).
1188    
1189    checkpoint64l (2013/08/05)
1190    o model/src:
1191      - in dynamics.F, skip the call to CALC_VISCOSITY if momViscosity=F
1192      - main_do_loop.F: no longer includes additional (AUTODIFF) header files
1193        when using TAF but only if using OpenAD.
1194    o pkg/mom_common+fluxform+vecinv:
1195      - always set horiz. viscosity arrays to background value before calling
1196        MOM_CALC_VISC (in MOM_FLUXFORM & MOM_VECINV) and call S/R MOM_CALC_VISC
1197        only when using variable horiz. viscosity (useVariableVisc=T);
1198      - simplify mom_vecinv.F (only 1 block for momViscosity).
1199    o pkg/mom_common: variable horiz. viscosity in NH code
1200      - move horiz-viscosity 3-D arrays viscAh_W & viscA4_W (used in calc_gw.F)
1201        from model/inc/NH_VARS.h to pkg/mom_common/MOM_VISC.h
1202      - store in common block (in MOM_VISC.h) logical parameters: useHarmonicVisc,
1203        useBiharmonicVisc & useVariableVisc.
1204      - fix old bug (already in 1rst implementation of variable horizontal viscosity
1205        in calc_gw.F, version 1.27, 2006/06/20):
1206        horizontal bi-harmonic viscosity in gW was missing when wiscA4W=0
1207        even if variable bi-harmonic viscosity (e.g., viscA4Grid) was non-zero.
1208      - change background horiz viscosity in vertical momentum (gW) to always be
1209        viscAhW,viscA4W (instead of switching to viscAhD, viscA4D when using
1210        any type of variable viscosity, e.g., viscAh/4Grid)
1211      - change default value of viscAhW,viscA4W to viscAhD,viscA4D (instead of
1212        viscAh,viscA4) which default to viscAh,viscA4 :  this avoid missing
1213        horiz. viscosity in W eq when just setting viscAhD/Z,viscA4D/Z (since
1214        default viscAh,viscA4 is zero).
1215    o model/src:
1216      - extend length of drC & recip_drC from Nr to Nr+1.
1217    o Divided Adjoint (DIVA) with MPI:
1218      - genmake2: do not create local ./mpi_headers dir when no file to copy into.
1219      - remove option ALLOW_DIVIDED_ADJOINT_MPI (replaced by ALLOW_DIVIDED_ADJOINT
1220        and ALLOW_USE_MPI) from model/src code and from ECCO_CPPOPTIONS.h.
1221    
1222    checkpoint64k (2013/07/23)
1223    o tools/OAD_support:
1224      - avoid the need for file "oadtempflile" in insertTemplateDir.bash
1225        and remove it from genmake2.
1226    o tools/build_options:
1227      - remove MPI_HEADER_FILES_INC setting (no longer used) and comment out
1228        MPI_HEADER_FILES list (let genmake2 find the missing headers)
1229    o verification/halfpipe_streamice:
1230      - change to driving stress formulation; update both Fwd & AD output.
1231    o tools/genmake2 and Divided Adjoint with MPI:
1232      - remove default setting of MPIINCLUDEDIR from $MPIHOME (always been broken);
1233      - only create local ./mpi_headers dir if using MPI and MPIINCLUDEDIR is set;
1234      - add new variable (LOCAL_MPI_HEADERS, replace MPI_HEADER_FILES_INC) in
1235        Makefile, which is set by genmake2, and check which mpi-headers are needed.
1236        Note: need to update adjoint_options/adjoint_diva_mpi accordingly.
1237      - update target "CLEAN" (to also remove ./mpi_headers/ dir).
1238    o testreport:
1239      - changes for Divided Adjoint Run: when file "run_ADM_DIVA" is present,
1240        perform additional runs (number of additional runs is "add_DIVA_runs" taken
1241        from file run_ADM_DIVA ; should match "nchklev_3" in file "code_ad/tamc.h").
1242    o verification/lab_sea (AD test):
1243      - change to test Divided Adjoint Run in this set-up (both standard AD test
1244        and 2 secondary AD test: noseaice + noseaicedyn); drop the evp AD test.
1245    o pkg atm_ & ocn_compon_interf:
1246      - remove cpl_earlyExpImpCall=F option (was mainly a hack added for the old
1247        staggerTimeStep implementation) and disable (retired) corresponding
1248        parameter.
1249    o pkg/offline:
1250      - comment out unused field-array: ICEM, ConvectCount, hflx[01], icem[01];
1251      - add S/R OFFLINE_CHECK to print offline parameter summary
1252        and stop if loading a file that is not used;
1253      - enable to calculate GMRedi tensor, KPP mixing and convective index
1254        when the corresponding file(s) is/are not specified (but pkg is used).
1255      - comment out resetting of monitorFreq (to endTime) since it still useful
1256        for monitoring CFL numbers and checking offline fields.
1257    o OpenAD:
1258      - do not define OAD_DEBUG (in tools/adjoint_options/adjoint_oad) to get
1259        smaller standard output) and generate new (smaller) output (on baudelaire
1260        using gfortran with -ieee) for exp. tutorial_tracer_adjsens
1261    o model/src:
1262      - call EXTERNAL_FORCING_SURF outside bi,bj loops (in do_oceanic_phys.F),
1263        (where external_forcing_adjust was called) and change list of arguments;
1264      - merge external_forcing_adjust.F into external_forcing_surf.F
1265      - put surface relaxation of SST & SSS in new S/R (forcing_surf_relax.F)
1266        which also contains balancing surface relaxation (ALLOW_BALANCE_RELAX,
1267        previously in file "balance_relax.F", now removed); remove corresponding
1268        arrays in FFIELDS.h.
1269      - EXTERNAL_FORCING_SURF is now called when using pkg/offline; implement
1270        a hack for getting back surfaceForcingS (loaded from file) when using
1271        ALLOW_OLD_VIRTUALFLUX (pkg/dic, in DIC_OPTIONS.h) in offline set-up.
1272      - update output of AD test experiment global_ocean.cs32x15.seaice_dynmix
1273        (was getting only 11 digits for AD-grad, due to different truncation
1274         error in AD code).
1275    
1276    checkpoint64j (2013/07/04)
1277    o pkg/offline:
1278      - to enable the use of other features with pkg offline (e.g., obcs),
1279        also call S/R DO_OCEANIC_PHYS in offline run - more modifs to come.
1280      - comment out "allowFreezing" (now active) in 2 offline testing exp.
1281    o pkg/exf ALLOW_RUNOFTEMP
1282      - fix sign and make compatible with temp_EvPrRn .NE. UNSET_RL
1283      - ahdded RUNOFTEMP test to verification/global_ocean.cs32x15/input.seaice
1284      - changes verification/global_ocean.cs32x15/results/output.seaice.txt
1285    o pkg/atm_phys:
1286      - allows to add some damping on uVel,vVel (strength only function of k).
1287    o verification, ad-tests:
1288      - reduce length of the simulation for AD test: global_ocean.cs32x15.seaice,
1289        global_ocean_ebm and offline_exf_seaice.thsice.
1290    o verification/halfpipe_streamice:
1291      - found a bug in s/r pkg/streamice/streamice_advect_thickness which caused
1292        flux input boundary conditions to be ignored; a fix for this bug changed
1293        verification results for forward test.
1294      - add adjoint test.
1295    o pkg/ptracers:
1296      - allow to restart without SOM pickup (resetting SOM to zero).
1297    o pkg/gmredi:
1298      - New parameterisation for the calculation of K and (GM_PsiX,GM_PsiY) added.
1299      - It uses mixing length theory and suppression by steering level effects to
1300        calculate a diffusivity used in the Redi tensor (see Bates et al., submitted
1301        to JPO, for more details).
1302      - It also uses the diffusivity to calculate an eddy induced streamfunction
1303        based on a PV closure (rather than a buoyancy closure as in GM).
1304      - New files added to pkg/gmredi:
1305        gmredi_k3d.F calculates the diffusivity for the Redi tensor and the eddy
1306          induced overturning streamfunction (called from gmredi_calc_tensor)
1307        gmredi_calc_eigs.F calculates the eigenvalues and eigenvectors required
1308          for use in gmredi_k3d
1309        gmredi_calc_urms.F calculates the the rms eddy velocity used to calculate
1310          the eddy diffusivity
1311    
1312    checkpoint64i (2013/06/18)
1313    o pkg/cheapaml:
1314      - take src files from MITgcm_contrib/verification_other/offline_cheapaml/code
1315        that enable the use of seaice (pkg/thsice thermo & pkg/seaice dynamics)
1316        with pkg/cheapaml.
1317    o utils/python: add subpackage for cubed sphere function, first example is
1318        simple cs.pcol to plot 2D fields on a map
1319    o pkg/streamice:
1320      - This is a new package in MITgcm, which solves dynamic equations for ice
1321         sheets and ice streams
1322      - At the moment it is independent of atmosphere/ocean dynamics, or any
1323        other physical packages in MITgcm, even ShelfIce (although it is anticipat-
1324        ed that this will change)
1325      - There is a new verification exercise that tests it, halfpipe_streamice,
1326        evolves a 40x80 km ice stream/ice shelf (at coarse resolution) in a
1327        rectangular embayment
1328      - halfpipe_streamice is forward-only for now, will have TAF test soon
1329      - for questions, email dgoldber@mit.edu
1330    o pkg/thsice:
1331      - fix filling of snow-precip diagnostic (SIsnwPrc) (left from the removing
1332        of snowPrc from common bloc, on May 2nd, thsice_step_fwd.F revision 1.40);
1333      - remove diagnostics 'SI_FrcFx' ( now identical to 'SI_Fract' with new
1334         call sequence: ice-Thermo(thsice),ice-Dyn,ice-Advect );
1335      - allow precip from pkg/cheapaml to make snow over seaice.
1336    o pkg/cfc:
1337      - move in separated header file (CFC_ATMOS.h) time-serie arrays of Atmos CFC
1338      - remove atmos CFC 2-D arrays from common bloc (now local variables)
1339      - change some hard-coded constant to run time parameter for reading and
1340        and interpolating atmospheric CFC ; keep same default as previously.
1341      - more flexible reading of Atmos CFC (number of records no longer hard-coded)
1342      - put arguments in standard order: myTime, myIter, myThid
1343      - use standard S/R GET_PERIODIC_INTERVAL for time interpolation of
1344        atmospheric CFC ; fix for the case myIter < PTRACERS_iter0.
1345      - fix calculation of surf tendencys for partial-cell and/or Non-Lin Free-Surf
1346      - new routine to print summary of CFC params and check for consistency.
1347    o pkg/seaice: add uice/vice to the parameter list of s/r seaice_advdiff,
1348      similar to thsice_advdiff.
1349      Note that for the B-grid case the routine parameters uc/vc are overwritten.
1350    o pkg/cfc:
1351      - change time interpolation for atmospheric CFC-11 (now same as for CFC-12);
1352        update output (CFC-11) of experiment cfc_example and tutorial_cfc_offline.
1353      - fix interpolation of atmphspheric CFC between Sorthern and Northern
1354        hemisphere value.
1355    o pkg/seaice:
1356      - allow to use seaice dynamics without pkg/exf (e.g., using pkg/cheapaml)
1357    o pkg/seaice: add Adams-Bashforth2 time discretization for ice dynamics;
1358                  so far only for JFNK-solver, turn on with SEAICEuseAB2 = .TRUE.
1359      - requires an additional time level that is stored in the pickup
1360      - you can start with AB2 from a pickup without this time level with
1361        pickupStrictlyMatch = .false.
1362    
1363    checkpoint64h (2013/05/26)
1364    o pkg/cheapaml:
1365      - replace one ()**.5 with SQRT + use temp var "cdu = tau/Du" (coare3_flux);
1366        affect machine truncation (but exp cheapAML_box still pass with 13 digits).
1367      - consistent treatment of uWind,vWind location: assume everywhere in
1368        pkg/cheapaml that they are on C-grid (@ uVel,vVel location)
1369        (Note: was already the case for Tair,Qair advection);
1370        add option (INCONSISTENT_WIND_LOCATION) to recover old results.
1371      - compute diabatic forcing only in the interior (excluding overlap regions)
1372      - fill in array "Qsw" (for short-wave heating);
1373      - add diagnostic for precip ; fill-in diagnostics for cheapAML state vars
1374        before any update (consistent with MITgcm state var diagnostics);
1375      - cheapaml_fields_load.F & cheapaml_init_varia.F : only fill outer edges if
1376        non periodic ; + adjusted for uWind,vWind (C-grid).
1377    o pkg/seaice:
1378      - remove dependence of pkg/seaice versus pkg/exf (file: pkg/pkg_depend) and
1379        add explicitly pkg/exf in experiments that currently use pkg/seaice.
1380      - allows to compile pkg/seaice without pkg/exf.
1381    o tools/OAD_support:
1382      - use a local copy (ourRWCPinBd) to ensure index ourRWCP stays within bounds
1383        of array "ourStepOf" in function rvNextAction (revolve.F90).
1384    o pkg/aim_compon_interf renamed to pkg/atm_compon_interf
1385      - change pkg name (to be used with other atmospheric physics pkg)
1386        but by-pass CVS when making the new pkg so that we keep the CVS history.
1387    o pkg/offline:
1388      - call OFFLINE_FIELDS_LOAD from pkg/offline/offline_init_varia.F
1389        (previously called from pkg/dic_surfforcing_init.F)
1390    o model/src:
1391      - re-order sequence of calls within packages_init_variables.F, using
1392        standard order, except for:
1393         DIAGNOSTICS_INIT_VARIA and OFFLINE_INIT_VARIA (called @ the top),
1394         CTRL_MAP_INI and OBCS_INIT_VARIABLES (called @ the bottom)
1395    o new pkg: atm_phys
1396      - add entry point and source code (previously in contrib
1397          verification_other/atm_gray/code_gray/) for new pkg "atm_phys"
1398        (atmospheric physics pkg from P. O'Gorman and T. Schneider, JCl, 2008).
1399      - re-order sequence of calls within packages_readparms.F,
1400         packages_init_fixed.F and packages_write_pickup.F
1401        (but skip packages_init_variables.F because of TAF issues).
1402      - update contrib/*/atm_gray/ experiment.
1403    o pkg/seaice (ITD code):
1404      - simplify and fix the writing of pickup-files for ITD case
1405    o pkg/seaice (ITD code):
1406      - introduce floe size dependent lateral melt for ITD case;
1407      - cleaning (avoid division by zero, change to f77 syntax, remove tabs)
1408      - update seaice_itd experiment main output.
1409    o pkg/thsice:
1410      - remove snowPrc from common block THSICE_FLUX, in THSICE_VARS.h and
1411        declared it locally (without bi,bj) in thsice_main.F & aim_do_physics.F;
1412        changed accordingly pkg/atm2d.
1413    
1414    checkpoint64g (2013/05/01)
1415    o pkg/exf ALLOW_RUNOFTEMP
1416      - if defined,  river and glacier runoff temperature can be read-in from
1417        runoftempfile; runoftempfile needs to have same format as runofffile
1418    o pkg/thsice (& pkg/bulk_force):
1419      - In case Energy-Reference-Level (ERL) is used (temp_EvPrRn=0), account
1420        for energy content of Precip + RunOff & Evap (like with pkg/exf).
1421      - change computation domain to always be the interior (without overlap).
1422      - fix bug (wrong overlap) when using EXF and stressReduction > 0.
1423    o verification/tutorial_global_oce_biogeo:
1424      - add preliminary OpenAD setup (still has problems)
1425    o pkg/seaice:
1426      - turn some parameters for choosing the convergence criterion of
1427        the inexact Newton method (JFNK) into runtime parameters for convenience
1428      - clean up seaice_calc_viscosities.F: remove/retire two options for
1429        SEAICetaZmethod (1,2), introduce area weighting for method 3; this changes
1430        the results of lab_sea/input because a division has been replaced by
1431        a multiplication with the reciprocal (sumNorm)
1432      - modify offline_exf_seaice/input.dyn_jfnk/data.seaice to improve
1433        convergence of solver (changes results, of course), and to test some
1434        new features
1435    o model/src:
1436      - remove unused (since Aug 2006) S/R SET_WRITE_GLOBAL_PICKUP and its call.
1437      - remove unused forcing field "dQdT" and associated parameter "dQdTFile".
1438      - move forcing adjustment (balancing surface forcing) in specific S/R
1439        where might also be applied exchanges (if needed) to forcing arrays.
1440    o pkg/shelfice:
1441      - allow to specify the Ice-Shelf mass per unit area (instead of
1442        shelficeLoadAnomaly) and do the conversion from one to the other
1443      - move loading from file of shelficeLoadAnomaly from SHELFICE_INIT_VARIA
1444        to SHELFICE_INIT_FIXED: (a) avoid some TAF recompution issues and
1445        (b) will be loaded in time (before calling INI_PRESSURE) in case it is
1446        needed in phi0surf for initial pressure calculation when useDynP_inEos_Zc
1447      - update isomip experiment forward output (get machine truncation error
1448        from conversion shelficeLoadAnomaly -> shelficeMass -> shelficeLoadAnomaly)
1449    o verification/offline_exf_seaice:
1450      revise data.seaice in input.thermo and input_ad and update results accordingly
1451        HO = 0.2, SEAICE_areaLossFormula = 2,
1452        SEAICE_growMeltByConv = .TRUE.,
1453        SEAICE_doOpenWaterMelt = .TRUE.,
1454      Improve consistency with input.thsice and fix the spurious 500m ice corners
1455    o verification/global_ocean.cs32x15:
1456      - set Energy Reference Level to liq. water @ 0 degC: temp_EvPrRn=0.,
1457        in icedyn (thsice+seaice-dyn) test and update output.
1458    o verification/offline_exf_seaice:
1459      - adjust list of tested variables (with testreport) and update
1460        standard test output with better slection of monitored fields.
1461    o pkg/cd_code:
1462      - swtich off Adams-Bashforth on the 1rst iteration. Update output of
1463        experiment lab_sea.hb87
1464    o tools/genmake2:
1465      - change default makedepend from the system default to tools/xmakedepend:
1466        When no makedepend is specified, select tools/xmakedepend it the test pass,
1467        otherwise select the system default (if exist and pass the test) or
1468        try to build cyrus-makedepend ; stop if none of the 3 works.
1469    o pkg/exf & pkg/thsice:
1470      - In case Energy-Reference-Level (ERL) is used (temp_EvPrRn=0), account
1471        for energy content of Precip + RunOff & Evap. Assumes:
1472       1) Rain has same temp as Air.
1473       2) Snow has no heat capacity (consistent with seaice & thsice pkgs)
1474       3) Run-Off comes at the temp of surface water (with same Cp)
1475       4) Evap over ocean is released to the Atmos @ surf-temp (=SST); should be
1476        put directly into Latent Heat flux & should use water-vapor heat capacity.
1477       5) Evap over snow/seaice (pkg/thsice) assumes constant Lf+Lv (consistent
1478        with snow having no Cp) => water vapor is released to Atmos @ 0^oC (=ERL).
1479    o pkg/seaice: simplify the use of CPP flags in JFNK-related files
1480        (compile when SEAICE_ALLOW_JFNK is defined)
1481    o pkg/thsice:
1482      - fix oceanic flux diagnostics & timeave (left from new sequence of calls
1483        implementation): move THSICE_AVE call after the advection (called directly
1484        from thsice_do_advect.F).
1485    o verification/global_ocean.90x40x15 and OpenAD:
1486      New experiment for OpenAD is identical to the one in input_ad except that
1487        multiDimAdvection=.FALSE.,
1488      There is still an issue with this.
1489    o pkg/thsice:
1490      - account for ice velocity (ocean relative velocity) in turbulent heat flux
1491        at the base of the ice; update output of global_ocean.cs32x15 (icedyn)
1492        and offline_exf_seaice (main test).
1493    
1494    checkpoint64f (2013/03/31)
1495    o verification/OpenAD:
1496      - new (smaller, without OAD_DEBUG) output_oadm.txt generated using gfortran.
1497    o verification/isomip, pkg/shelfice and OpenAD:
1498      - add OpenAD setup to this exp and make shelfice package work with OpenAD
1499    o verification/tutorial_global_oce_biogeo:
1500      - update AD and TLM output after turning off ALLOW_FE (in DIC_OPTIONS.h)
1501    o verification/offline_exf_seaice:
1502      - replace adjoint experiment (now similar to fwd input.thermo/ setup).
1503    o verification/tutorial_tracer_adjsens, pkg/ptracers and OpenAD:
1504      - add OpenAD setup to this exp and make ptracers package work with OpenAD
1505    o pkg/seaice/seaice_evp.F:
1506       mask the asymmetric contribution of the ice-ocean stress (when
1507       the turningAngle is non-zero) over open water to avoid stripes
1508       in the EVP-solutions after many EVP-substeps. This does not change
1509       the verification experiment (because turningAngle=0 in that experiment),
1510       but will affect other EVP solutions with turningAngle.ne.0
1511    o verification, AD & TLM output:
1512      - new TAF version 2.3.10 (previously 2.3.8) add more parenthesis in multiple
1513        additions and multiplications which affect results at machine truncation
1514        level. Update few AD output (1D_ocean_ice_column, bottom_ctrl_5x5,
1515        lab_sea.noseaicedyn & offline_exf_seaice) and TLM output
1516        (1D_ocean_ice_column & tutorial_tracer_adjsens.som81) which had only 12
1517        digits of matching.
1518    o pkg/seaice:
1519       modify lsr-algorithm so that it vectorizes AND converges by using a
1520       "zebra" method: split vector loop into two with step size 2; this
1521       solves a general convergence problem for the JFNK solver on a vector
1522       computer. It has the potential to even improve convergence for
1523       non-vector machines, but it does change the results so it is turned
1524       off by default. To turn on define CPP-flags SEAICE_VECTORIZE_LSR and
1525       SEAICE_VECTORIZE_LSR_ZEBRA in SEAICE_OPTIONS.h
1526    
1527    checkpoint64e (2013/03/05)
1528    o pkg/ecco and several verification experiments:
1529       Remove special versions of the_model_main.F, the_main_loop.F, forward_step.F
1530       from ecco package, and revert to unified routine in model/src/
1531       Adjust verification experiments accordingly, especially gloal_oce_llc90
1532       Should conclude long-standing work by Gael to reconsile the_main_loop with
1533       ECCO and will enable OpenAD's revolve loop in ECCO setup.
1534    o pkg/generic_advdiff:
1535      - implement compressible flow method for multi-dim advection (similar to
1536        gad_som_advect.F); add new option "GAD_MULTIDIM_COMPRESSIBLE" (since
1537        TAF generates many recomputations) to use it; no yet coded with implicit
1538        vertical advection.
1539      - change experiment advect_cs (new output) and advect_xy (same output)
1540        to test compressible flow multi-dim advection.
1541    o pkg/generic_advdiff:
1542      - fix SOM advection for unusual cases (linear Free-Surf in r*, other
1543        cases where linear Free-Surf is not @ k=1, e.g., useShelfIce)
1544    o pkg/seaice:
1545      - fix bug in the no-slip implementation in seaice_calc_strainrates.F, this
1546        bug affects two verification experiments (lab_sea and lab_sea.hb87),
1547        recover old (wrong) results by setting noSlipFac = 2. in
1548        seaice_calc_strainrates.F;
1549      - add another averaging method for etaZ (etaZmethod=3), a mix of 2 and 0
1550      - add runtime parameter SEAICE_JFNKepsilon for that finite difference
1551        gradient in the Jacobian times vector operation (s/r seaice_jacvec)
1552      - fix line search in seaice_jfnk.F (s/r seaice_jfnk_update)
1553    o pkg/seaice: reorganize seaice_lsr.F to be able to reuse more code:
1554      - new subroutines seaice_lsr_tridiagu/v
1555      - introduce loop bounds i/jmin/max to be able to use a restricted
1556        additive Schwarz method, but not used for now.
1557      - rename SEAICE_CALC_LSR_COEFFS into SEAICE_LSR_CALC_COEFFS
1558      - use new subroutines seaice_lsr_tridiagu/v in s/r seaice_preconditioner
1559    o OpenAD support
1560       Reorganize S/R call for overall time-stepping loop to facilitate
1561       OpenAD revolve loop replacement
1562       (new S/R main_do_loop.F)
1563    o model/src:
1564      - add 3-D array 3rd dimension to argument list of S/R ADAMS_BASHFORTH2/3;
1565      - pkg/cheapaml: remove local S/R ADAMS2d and use instead standard S/R
1566        ADAMS_BASHFORTH2.
1567    o pkg/cheapaml:
1568      - add new parameter (default=F, same as before) to disable full domain
1569        (including land) periodicity in X & Y dir.
1570      - new S/R CHEAPAML_COPY_EDGES to copy relaxation field into edges of
1571        prognostics field ; merge the 2 S/R cycle_2d_tracer and timestep_2d_tracer
1572        into single S/R CHEAPAML_TIMESTEP.
1573    
1574    checkpoint64d (2013/02/17)
1575    o pkg/monitor (angular momentum):
1576      - do not add Eta contribution to the total AM if using rigid-lid;
1577      - correct for Adams-Bashforth in zonal-wind part (instead of in AM_eta).
1578      - horizontal discretisation: compute Zonal wind contribution separately for
1579        each component (instead of from cell centered averaged) and use the 4
1580        grid-cell corner averaged value of Omega*(R*cos_Phi)^2 in AM_eta part.
1581      - Check that AM is conserved with linear dynamics (momAdvection=F and linear
1582        FreeSurf) if using vectorInvariant momentum.
1583    o model/src (horizontal grid):
1584      - move initialisation of all horizontal grid arrays to null value
1585        from specific horizontal grid S/R to main S/R INI_GRID;
1586      - add 2 new arrays to project model C-grid velocity on to zonal direction
1587        (similar to AngleCosC & -AngleSinC but at U and V point location) and
1588        compute them in S/R CALC_GRID_ANGLES.
1589    o pkg/seaice: replace a hard coded parameter by a runtime parameter
1590        SEAICE_JFNK_tolIter
1591    o pkg/seaice: introduce a restricted additive Schwarz (RAS) method in
1592        preconditioner for JFNK (run LSR into the overlaps as far as possible,
1593        i.e OLx/y-2, but overwrite the solution in the overlaps)
1594      - extend loop range in seaice_calc_viscosity
1595      - add new parameters SEAICE_OLx/y (default = OLx/y-2)
1596      - add flexible loop ranges to seaice_preconditioner, seaice_calc_lsr_coeffs
1597      - slightly modify loops in tridiagonal solver lsr-preconditioner
1598      - by default remove the extra exchange in seaice_preconditioner with a
1599        replacement of an undocumented CPP flag by SEAICE_PRECOND_EXTRA_EXCHANGE
1600      - modify offline_exf_seaice so that old results without RAS are reproduced
1601        for output.dyn_jfnk.txt
1602      in seaice_fgmres.F (unrelated to RAS)
1603      - add a cpp-flag option for a re-ordered mapping (potentially more
1604        efficient), but because this changes the results, turn it off by
1605        default
1606      - replace the save statement by local common blocks
1607    o utils/matlab:
1608      - fix tile-offset in rdmnc.m when output was produced using EXCH2.
1609      - update cs_grid/bk_line scripts to use load_grid.m (in utils/matlab)
1610        instead of local script "load_cs.m".
1611    o pkg/seaice:
1612      - fix a serious bug in seaice_fgmres.F, s/r seaice_scalprod, connected
1613        to the scalarProductMetric and the unrolling. By chance this does not
1614        change the verification experiment, because of the particular domain
1615        decomposition
1616    o pkg/diagnostics:
1617      - change default missing_value from UNSET_RL to -999.
1618    o pkg/layers: improve vectorization of layers_fluxcalc.F
1619      - step 1: split loops, make TatU/V 2D arrays. This alone reduces the cpu
1620        time spent in this routine by more than a factor of 3 on an NEC-SX8
1621      - step 2: replace search algorithm by a bisection algorithm found in
1622        Press et al. Numerical Recipes in Fortran. This algorithm can be
1623        vectorized and finds the correct bin in approx. log2(Nlayers) steps.
1624        For now, use this algorithm only for TARGET_NEC_SX defined.
1625      - moved the search algorithm into a separate subroutine, that is kept
1626        within the same file for automatic inlining.
1627      - modified catching potential errors
1628    o pkg/ecco:
1629      - add compile switches ALLOW_SHALLOW_ALTIMETRY and ALLOW_HIGHLAT_ALTIMETRY.
1630    o model/src, pkg/autodiff, pkg/ctrl, pkg/grdchk :
1631      - modifications for ALLOW_GENTIM2D_CONTROL
1632      -- forward_step.F, the_main_loop.F : pass options and arrays for adjoint tapes.
1633      -- load_fields_driver.F : add call to CTRL_MAP_GENTIM2D( myTime, myIter, myThid )
1634      -- add xx_gentim2d0/1 in ctrl_ad_check_lev1_dir.h checkpoint_lev1_directives.h etc
1635      -- use ctrl_swapffields.F (new) instead of exf_SwapFFields.F in ctrl_get_gen.F
1636    o model/src:
1637      - account for moist thermodynamics in (dry) potential temperature equation;
1638        update results of experiments: aim.5l_cs (x2), fizhi-cs (std + aqualev)
1639        and cpl_aim+ocn.
1640      - also switch to standard compiler (gfortran, was using ifort previously)
1641        for fizhi-cs experiments reference output.
1642    o pkg/ctrl:
1643      - 1st step toward generic time-varying control variable (2D) via CPP option
1644        ALLOW_GENTIM2D_CONTROL
1645      - note new namelist ctrl_nml_genarr in data.ctrl
1646    o verification/global_ocean.cs32x15:
1647      - switch off OLD_THSICE_CALL_SEQUENCE (both forward and AD code) to use new
1648        thsice calling sequence and update "output.icedyn.txt" output file.
1649    o pkg/ptracers:
1650      - from Ryan A.: code to allow to restart a tracer at regular time interval
1651        specifying a reset frequency and a reset-phase (for each tracers).
1652    o pkg/thsice:
1653      - implement new sequence of calls for thsice+seaice:
1654          previously:   ice-Dyn,ice-Advect,ice-Thermo(thsice)
1655          new sequence: ice-Thermo(thsice),ice-Dyn,ice-Advect
1656      - allows (with temporary CPP option "#define OLD_THSICE_CALL_SEQUENCE"
1657        in CPP_OPTIONS.h) to recover old sequence;
1658      - update diagnostics for Intermediate State thsice diagnostics: now filled
1659        just before advection (instead of just after advection in old sequence);
1660      - update output of experiment offline_exf_seaice (standard test);
1661      - in global_ocean.cs32x15 exp., postpone output.icedyn.txt update
1662        by setting #define OLD_THSICE_CALL_SEQUENCE in CPP_OPTIONS.h
1663    o pkg/aim_v23:
1664      - use tiled array for aim_CO2 and surface wind speed for export to coupler;
1665      - use standard pkg/mdsio routines to read & write CO2 pickup file;
1666      - in-line S/R AIM_AIM2DYN_EXCHANGES in aim_do_physics.F;
1667      - Implement new sequence of calls for seaice advection (with thsice and
1668        seaice diffusion): do ice advection after ice-Thermodynamic (previously
1669        was done before); change aim_do_physics.F (split the bi,bj loops block);
1670      - use same CPP option (OLD_THSICE_CALL_SEQUENCE) to recover old sequence;
1671    o pkg/thsice:
1672      - add a missing EXCH of sIceLoad in thsice_main.F (ocean set-up) for the case
1673        where just seaice diffusion is used without seaice-dynamics.
1674    
1675    checkpoint64c (2013/01/18)
1676    o pkg/seaice:
1677      - add a parameter JFNKres_tFac that can replace JFNKres_t
1678        (= JFNKres_tFac*JFNKresidual before JFNK solver)
1679      - add a line search option to the JFNK solver
1680      - move update of u/vIce and computation of initial residual into a separate
1681        routine (same file); makes the code a little easier to read (?)
1682      - the line search requires computation of the residual and for some reason
1683        I cannot do the update of u/vIce at the beginning of the Newton loop
1684        without changing the results, so we move computation of the new residual
1685        also to the end of the Newton loop, even without the line search
1686    o pkg/mdsio:
1687      - write missing value (corresponding to undefined array value) to meta files;
1688        skip this if missing value is one (UNSET_RL would be a better value for the
1689        case of undefined missing value but it's current the default missing-value);
1690        Also update mdsio_read_meta.F (reading timeInterval & missing-value).
1691    o pkg/exf & thsice:
1692      - for diagnostics purpose, fill-up and update Qsw array (+ fill the
1693        diagnostics) even when SHORTWAVE_HEATING is #undef;
1694    o verification/cfc_example:
1695      - turn on pkg/layers with pkg/diagnostics (to test pkg/layers and to
1696        illustrate how to use it).
1697    o verification/offline_exf_seaice:
1698      in input: add SEAICErestoreUnderIce=.TRUE., and reduce size of forcing
1699        files to only one time-record.
1700      in input.thermo: narrow the 2 bands of low initial ice-concentration near
1701        N & S edges; switch on SEAICErestoreUnderIce=T; use pkg/diagnostics for
1702        snapshot output; same mcPheePiston value as in thsice with
1703        surf-current=0.2m/s.
1704      in input.thsice: similar set-up as in input.thermo (channel with same seaice
1705        initial conditions).
1706    o verification/cfc_example:
1707      - update file "data" with more standard choice (default rotationPeriod,
1708        exactConserv=T, reduce ivdc_kappa to 10, remove multiDimAdvection=F,
1709        set deltaTFreeSurf to deltaTtracer) and update the output.
1710    o pkg/layers:
1711      - fix bolus part so that it compiles with #undef GM_BOLUS_ADVEC;
1712      - ensure that "layers_bolus" is switched to False when useGMRedi=False.
1713    o verification/offline_exf_seaice:
1714      - set all {field}period to zero for constant-in-time forcing (not tested
1715        anywhere else).
1716    o verification/offline_exf_seaice:
1717      - dyn_lsr  : use pkg/seaice S/R (instead of pkg/thsice) to advect sea-ice;
1718      - dyn_jfnk : use pkg/thsice S/R (instead of pkg/seaice) to advect sea-ice.
1719    o model/src:
1720      - implement Finite-Volume method for (hydrostatic) presure gradient
1721        from S.-J. Lin (QJRMS 1997), for atmosphere using sigma-coordinate.
1722    o pkg/seaice: implement EVP* by Lemieux et al. (2012).
1723      - In order to be compatible with the default EVP code, this requires changing
1724        the EVP code around a little; and because any small change immediately
1725        breaks the lab_sea.hb87 verification experiment, the reference output is
1726        updated two times (each time the remaining aggrement was only 2 digits):
1727        - after replacing 1/dt by 1*recip_dt with a precomputed recip_dt
1728        - after replacing 1/(1+0.5*dt/tau) by a/(a+1), with a=2*tau/dt
1729        The adjoint test lab_sea.evp also needed to be updated.
1730      - Turn on EVP* by setting SEAICE_deltaTevp as before, and setting
1731        SEAICEuseEVPstar=.true.; for EVP* SEAICE_deltaTevp does not need to be
1732        a factor of SEAICE_deltaTdyn, and you can set the number of EVP steps
1733        explicitly with SEAICEnEVPstarSteps (thereby overriding the default of
1734        INT(SEAICE_deltaTdyn/SEAICE_deltaTevp)). Controlling EVP* is deliberately
1735        kept obscure, because I need to test it a little more.
1736    o pkg/cheapaml:
1737      - fix few incorrect type (_RL/_RS) in subroutine calls.
1738    o pkg/seaice:
1739      - new S/R SEAICE_MAP_RS2VEC (similar to SEAICE_MAP2VEC) to map _RS arrays
1740        to _RL vector; this fixes JFNK code when compiling with "-use_r4" option.
1741    o model/src:
1742      - add a warning if using select_rStar=2 with nonlinFreeSurf <> 4;
1743        change (in input_ad*/data) select_rStar from 2 to 1 for AD verification
1744        experiments global_ocean.cs32x15 & tutorial_tracer_adjsens (+ update output)
1745    o pkg/cheapaml:
1746      - replace "273.1 _d 0" by celsius2K in pkg/cheapaml/cheapaml.F and
1747        update output of experiment cheapAML_box.
1748      - store in CHEAPAML.h coeffs ssq[0:2] for saturation specific humidity,
1749        and set them only in one place (cheapaml_readparms.F).
1750      - replace "273.16 _d 0" by celsius2K & replace "3.14159 _d 0" by constant "PI"
1751      - remove re-setting of main-model parameter "celsius2K" (in cheapaml_readparms)
1752        and re-setting of cheapAML params "lath" & "p0" (in cheapaml_init_varia).
1753    o model/src/the_main_loop.F:
1754      - fix revision 129 : need both ALLOW_ECCO and ALLOW_ECCO_EVOLUTION.
1755    o pkg/seaice:
1756      - remove legacy branch code.
1757      - retire SEAICE_GROWTH_LEGACY and SEAICE_CAP_HEFF accordingly.
1758    o verification/*/code*/SEAICE_OPTIONS.h:
1759      - remove documentation for retired CPP flags (SEAICE_GROWTH_LEGACY,
1760        SEAICE_CAP_HEFF).
1761    o pkg/cheapaml:
1762      - use standard routine (S/R GET_PERIODIC_INTERVAL) to decide when it is time
1763        to load new forcing fields.
1764      - add missing "_d 0" where it's needed; + some editing (improve indentation).
1765      - remove switch to "-r8" compiler option (no longer needed) in verification
1766        cheapAML_box, keep same output (small trucation error differences).
1767    o verification/offline_exf_seaice:
1768      - add thermodynamics only test.
1769    o verification/cheapAML_box:
1770      - split the domain in 8 (2x4) tiles; add MPI and multi-threaded test;
1771        keep same output (same 14 digits for cg2d).
1772      - switch on "-r8" compiler option (some numerical values are missing
1773        the "_d 0") and update output (only 6 digits for cg2d were preserved).
1774    
1775    checkpoint64b (2012/12/24)
1776    o pkg/cheapaml:
1777      - remove un-used variables (Qnet,EmPmR) from pickup files.
1778      - store tendency of advected variables into cheapaml pickup file
1779        and fix the AB-2 restart.
1780    o verification/offline_exf_seaice and lab_sea adjoint:
1781      - switch to new code (#undef SEAICE_GROWTH_LEGACY).
1782      - switch to 4 time steps in offline, consistent with lab_sea.
1783      - match parameters from SEAICE_GROWTH_LEGACY branch in data.seaice.
1784      - update results after change of experiment seaice.
1785    o pkg/seaice:
1786      - remove option SEAICE_MULTICATEGORY; has been replaced with run-time
1787        parameter SEAICE_multDim. Issue a warning if SEAICE_MULTICATEGORY is
1788        still defined since SEAICE_multDim needs to be set to MULTDIM value (from
1789        SEAICE_SIZE.h) to recover previous #define SEAICE_MULTICATEGORY default.
1790    o model/src:
1791      - add run-time parameter to select CG2D solver minimum-residual solution
1792        (in case of a poor convergence).
1793    o pkg/seaice/seaice_lsr.F
1794      - move calculation of matrix coefficients into new
1795        S/R SEAICE_CALC_LSR_COEFFS; for now this routine remains in the same
1796        file; the main purpose of this change is to be able to reuse the code
1797        in S/R SEAICE_PRECONDITIONER
1798      - modify the computation of the residual so that the mass of sea-ice
1799        is not used twice; this simplifies the calculations, but since
1800        the residual is never used except when LSR_mixIniGuess.ge.4---and this is
1801        not tested in testreport---this does not affect the testreport results.
1802    o verification/seaice_obcs:
1803      - disable SEAICE_GROWTH_LEGACY; reset input files to match those of
1804        verification/lab_sea/input.salt_plume; changes results/output.txt*
1805    o model/src:
1806      - adapt quasi-hydrostatic formulation to work with p or p* coordinate.
1807    o pkg/seaice:
1808      - improve description of parameters in seaice_fgmres.F and start
1809        cleaning up the code
1810      - change name of SCALPROD to SEAICE_SCALPROD and modify meaning of
1811        second argument
1812      - add a metric based on grid cell area to SEAICE_SCALPROD; update
1813        results of offline_exf_seaice.dyn_jfnk
1814      - compute initial residual norm in seaice_jfnk based on SEAICE_SCALPROD
1815    o pkg/aim_v23:
1816      - fix an other bug in dissipation heating (grid-cell area was missing).
1817    o model/src + pkg/seaice:
1818      - add global (multi-tile) linear solver for pair of tri-diagonal system
1819        along X and Y lines, respectively for U and V component.
1820        Note: 1) MPI and cube-exchange not yet coded.
1821            2) probably not accurate for poorly conditioned / large size problem.
1822      - add option for SEAICE_LSR to use global (multi-tile) tri-diagonal solver;
1823        default: not compiled and not used.
1824    o pkg/seaice:
1825      - first attempt at a multi-threaded fgmres solver for the JFNK solver:
1826        introduce bi/bj loops and use global_sum_tile_rl instead of
1827        mpi_allreduce in seaice_fgmres.F
1828      - improve diagnostics output for fgmres solver (seaice_fgmres.F)
1829      - replace a few unnecessary goto statements by if-blocks  (seaice_fgmres.F)
1830      - add a verification experiment for JFNK in offline_exf_seaice
1831    o verification:
1832      - change (for now, only fwd test) offline_exf_seaice experiment:
1833        use a re-entrant channel with idealized coastline (trapezoidal shape)
1834        at southern boundary to explore seaice dynamics and thermodynamics
1835        with simple forcing. Main set-up has dynamics+thermo and SST relaxation;
1836        secondary test (input.thsice) use thermodynamics only with SST relaxation.
1837      - add seaice-dynamics only secondary test using LSR and pkg/thsice advection.
1838    o pkg/exf:
1839      - disable "sstExtrapol" when Nr=1
1840    o verification:
1841      - add new experiment "cheapAML_box" (simple 1 layer set-up from Bruno Deremble)
1842        to test pkg/cheapaml.
1843    o pkg/aim_v23 & pkg/shap_filt:
1844      - fix dissipation heating (erroneous gravity multiplication factor).
1845    o pkg/seaice:
1846      - remove unused field pressPre from jfnk solver
1847      - rename two subroutines in seaice_preconditioner.F
1848    o eesupp/src:
1849       - S/R MDSFINDUNIT avoids reserved unit numbers (scrUnit1, eeDataUnit ...)
1850    o pkg/seaice/seaice_preconditioner.F: fix preconditioner once again
1851       - remove wrong parts of the rhs and the lhs (were in there
1852         because I did not understand the concept of this preconditioner)
1853       - add an exchange between u- and v-sweep. This increases communication
1854         by a factor of two but improves the convergence of jfnk. Ideally,
1855         one would like the u- and v-sweep to be independent. So far within
1856         undocumented ifdefs
1857       - reorganize the extra computations for printing the residuals
1858    o tools/genmake2:
1859      - comment out the "mpif.h" include in NetCDF test programm (for MPI built)
1860        since it's not necessary (and was preventing to use MNC in some cases).
1861    
1862    checkpoint64a (2012/11/16)
1863    o pkg/autodiff:
1864      - improve pkg-internal logical parameter switch (inAd/inFwd mode) so that
1865        autodiff_readparms.F no longer depends on calling order (within
1866        packages_readparms.F) and no longer requires to include ${PKG}_PARMS.h):
1867        rename param turnFreeDriftInAdMode to SEAICEuseFREEDRIFTswitchInAd
1868        and change param SEAICEuseDYNAMICSinAdMode to SEAICEuseDYNAMICSswitchInAd.
1869    o pkg/obcs:
1870      - adding tidal velocity forcing capability to obcs
1871        for usage example, see verification/seaice_obcs/input.tides
1872    o pkg/seaice:
1873      - turn the LSR-relaxation parameters WFAU/V into runtime parameters
1874        SEAICE_LSRrelaxU/V
1875      - introduce runtime parameter SEAICEetaZmethod (=0 by default)
1876    o pkg/aim_v23:
1877      - implement heating from friction (bottom friction and stratospheric drag).
1878    o pkg/shap_filt:
1879      - fix diagnostic "SHAP_dKE" (was 2 time smaller); implement heating from
1880        dissipation but only for Shap_funct=2, active when addFrictionHeating=T.
1881    o model/src:
1882      - move AddMass common block from DYNVARS.h to FFIELDS.h; allow to read-in
1883        time-constant addMass field from file (addMassFile);
1884      - support for heating due to friction (and Kinetic Energy dissipation):
1885        add option, run-time switch and 3-D field array + support code ; each pkg
1886        or S/R can add heating contribution (if there is a sink of KE); the sum is
1887        accounted for as a Temperature tendency term (EXTERNAL_FORCING_T).
1888    o pkg/seaice:
1889      - complete merge of ITD code into seaice_growth.F
1890        from MITgcm_contrib/torge/itd/code/
1891        no verification so far, but Torge Martin tested
1892        "1-D test case and Beaufort set up;
1893        deliver okay results after 1 model year."
1894      - complete merge of SEAICE_SIZE.h into all relevant routines
1895      - move computation of eta at Z-points into calc_viscosities
1896        + introduce global field etaZ
1897        + add different methods for computing etaZ, for now the old
1898          method (simple averages of eta to Z-points) is hardwired
1899        + replace etaMeanZ by etaZ in seaice_lsr, seaice_calc_residual,
1900          seaice_preconditioner
1901      - simplify computations for SEAICE_ZETA_SMOOTHREG
1902      - seaice_preconditioner:
1903        + replace one remaining press by pressLoc (mistake)
1904        + adjust printing of residuals
1905      - improve I/O of diagnostics of JFNK in seaice_jfnk.F:
1906        + add (SEAICE.h) and rename some counters (initiliased in
1907          seaice_init_fixed.F)
1908        + add _BEGIN/END_MASTER (myThid)  around print statements
1909        + print total number of iterations and failures over SEAICE_monFreq
1910          interval to STDOUT
1911      - move control over output-messages by fgmres to seaice_jfnk to save
1912        some operations
1913      - move resetting initial guess for fgmres outside of seaice_fgmres_driver
1914        in order to make restarts with sol .ne. zero (fgmres with restarts)
1915        (seaice_jfnk.F, seaice_fgmres.F)
1916      - seaice_calc_l/rhs.F: replace maskW/S by maskInW/S; this fixes
1917        a serious convergence problem when open boundaries are involved
1918    o pkg/ggl90: fix computation of control volumes for the case of
1919      ALLOW_GGL90_HORIZDIFF (probably not used very often): move control volumes
1920      up half a grid cell from C-centered to W-centered (pointed out by C. Eden)
1921    o pkg/seaice: simplify seaice_evp by avoiding use of extra fields u/vIceC
1922    o pkg/autodiff
1923      - Add inAdMode switch for SEAICEuseDYNAMICS:
1924        SEAICEuseDYNAMICSinAdMode
1925        (extend logic in ADAUTODIFF_INADMODE_SET)
1926    o pkg/seaice
1927      - Step 1 of merging ice-thickness distribution (ITD) code from
1928        MITgcm_contrib/torge/itd/ (author: Torge Martin)
1929        The code implements concept laid out in Thorndike et al. (1975);
1930        code is enabled via CPP flag SEAICE_ITD
1931        nITD (in SEAICE_SIZE.h) defines number of ice thickness categories;
1932        code is not complete yet!!
1933      - SEAICE_SIZE.h now included in almost all seaice routines
1934    o verification (using seaice):
1935      - switch back seaice-dynamics (+ lower SOLV_MAX_ITERS) in ADM exp.
1936        global_ocean.cs32x15.seaice ; update results.
1937      - compile B-grid dynamics in FW test exp 1D_ocean_ice_column ;
1938      - compile C-grid dynamics with #define SEAICE_ALLOW_JFNK in FW test exp
1939        offline_exf_seaice (previously compiling B-grid).
1940    o pkg/exf:
1941      - fix some STOP conditions in exf_check.F (from Aug 28, modifs did not allow
1942        to specify neither just 1 comp of wind or wind-stress, nor no surface momentum
1943        forcing): just replace CPP option ALLOW_ATM_WIND with run-time param useAtmWind.
1944    o pkg/layers (adjust changes from Sept 19):
1945      - do snap-shot output and fill diagnostics from inside iLa loop (layers_calc.F)
1946        this allows to remove "layers_maxNum" dimension from all layers arrays.
1947    o pkg/layers (adjust changes from Sept 19):
1948      - remove ALLOW_LAYERS_OUTPUT ; fix snap-shot and time-ave output ;
1949      - snap-shot extended to all type of layers (not just the 1rst type);
1950      - remove layers variables when corresponding CPP option is undef.
1951    o pkg/layers:
1952      - rename pkg/layers variable and add new output (layer exist & un-weighted
1953        velocity in layer)
1954    o pkg/seaice:
1955      - simplify (?) ocean-drag coefficent computations by using
1956        the same routine in all three solvers (saves some code lines)
1957      - remove global fields DRAGA and DRAGS from C-grid code and
1958        declare them locally in lsr.F (the only place where they are
1959        still used)
1960      - update AD output of lab_sea.evp (very sensitive anyway).
1961    o pkg/seaice: add Jacobian-free Newton Krylov solver for ice dynamics
1962      (Lemieux et al. 2010, 2012). Turn on with the usual SEAICE_ALLOW_JFNK
1963      and SEAICEuseJFNK=.true. A few things to note:
1964      - involves a FGMRES, that is parallel but very inefficient,
1965        because of many scalar products (global sums) in the Gram-Schmidt
1966        orthogonalization method. Needs to be replaced. Original code
1967        from J.-F. Lemieux
1968      - preconditioner for FGMRES is a stripped down version of LSOR
1969      - SOLV_MAX_ITERS is now used for LSOR as a solver and as a
1970        preconditioner. For the preconditioner, the default is set to 10.
1971      - Jacobian times vector is computed with finite differences
1972      - marginally related to JFNK-solver: add a smooth regularization for
1973        zeta with tanh that will improve convergence (Lemieux and Tremblay,
1974        2009) for any implicit solver (not implemented for EVP because EVP
1975        does not need this regularization in the first place). Define
1976        SEAICE_ZETA_SMOOTHREG in SEAICE_OPTIONS.h to use.
1977    o eesupp/src:
1978      - check in genmake2 that intrinsic S/R flush is available.
1979      - add S/R to flush IO unit (if intrinsic S/R flush is available)
1980      - flush standard & error msg unit before MPI termination
1981      - if debugMode, flush IO unit after printing msg
1982    o pkg/ctrl:
1983      - ctrl_unpack.F, ALLOW_GENARR3D_CONTROL code: fix missing argument in call
1984        to ctrl_set_unpack_xyz.
1985    
1986    checkpoint64 (2012/10/09)
1987    o pkg/shelfice
1988      - in mom_fluxform.F, mom_vecinv.F:
1989        CALL SHELFICE_V_DRAG(bi,bj,k,vFld,KE,KappaRU,vF,myThid)
1990        Bug fix KappaRU -> KappaRV
1991        does not change verification/isomip but may change other setups
1992        (presumably constant KappaRU=KappaRV)
1993      - fix diagnostics SHIU/Vdrag (thanks to Tom Millgate)
1994    o pkg/obcs:
1995      - fixed some indexing bugs in obcs_seaice_sponge.F
1996      - added obcs relaxation subroutines for HSALT and HSNOW
1997      - changes verification/seaice_obcs/results/obcs_seaice_sponge.F
1998  o pkg/seaice:  o pkg/seaice:
1999    - add "multicategory" parameterization for snow in analogy to ice,    - add "multicategory" parameterization for snow in analogy to ice,
2000      default is off for now.      default is off for now.

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