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revision 1.1743 by mlosch, Mon Sep 24 15:07:38 2012 UTC revision 1.2115 by jmc, Wed Jan 21 00:23:32 2015 UTC
# Line 4  $Name$ Line 4  $Name$
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    o model/src & gmredi K3D:
8      - add frictionHeating field to pickup-files (for synchronous time-stepping)
9      - move ALLOW_EDDYPSI block out of DYNVARS.h and merge it into FFIELDS.h
10      - rename uMean,vMean --> uEulerMean,vEulerMean (+ change diagnostics name
11        and name in pickup file).
12      - fix arguments of few DIAGNOSTICS_FILL calls in gmredi_k3d.F
13    o model/src:
14      - move (from ini_forcing.F) initialisation of all arrays in header file
15        FFIELDS.h into new S/R ini_ffields.F ; this fix broken restart
16        (since Nov 2012) with option selectAddFluid=1.
17    o pkg/shelfice:
18      - change units (+ document) of newly added field "shelfIceMassDynTendency"
19      - upgrade from _RS to _RL shelficeMass & shelficeLoadAnomaly arrays.
20    o pkg/obcs: re-organize obcs_calc_stevens.F to prepare for passive tracers
21    o pkg/seaice: two new runtime parameters:
22      - SEAICE_cStar replaces the hard wired "20" in the strength formulation,
23        long overdue
24      - SEAICE_tensilFac: preparation for Koenig-Beatty+Holland (2012)
25        parameterization of tensil stress for fast ice (does not do anything yet)
26    o pkg/seaice/seaice_check.F: left over from restricted addtive Schwarz method
27        for LSR: move checking overlaps out of JFNK-if-block
28    o pkg/atm_phys:
29      - move copy of grid and dynamical fields out of atm_phys_driver.F into
30        new S/R ATM_PHYS_DYN2PHYS.
31      - fix level height for Linear Free-Surf case (to be consistent with
32        fixed-in-time pressure levels).
33    o pkg/mom_common (bottomdrag):
34      - average bottomDragFld (ALLOW_BOTTOMDRAG_CONTROL) from grid-cell center
35        to correct location (U & V point) in S/R MOM_U/V_BOTTOMDRAG;
36        update output (adm & tlm) of experiment global_ocean.90x40x15.bottomdrag.
37    o pkg/shelfice (u/v_drag):
38      - add one argument (the other velocity component) to S/R SHELFICE_U/V_DRAG;
39      - use SHELFICEDragLinear & SHELFICEDragQuadratic in shelfice_v_drag.F
40        (now similar to shelfice_u_drag.F)
41      - remove condition on bottomDragTerms when calling SHELFICE_U/V_DRAG
42        from mom_vecinv.F (similar to mom_fluxform calls).
43    o pkg/mom_common (bottomdrag):
44      - add one argument (the other velocity component) to S/R MOM_U/V_BOTTOMDRAG;
45      - add options for alternative discretisation of velocity norm in quadratic
46        bottom drag: averaging of grid-cell-center KE to U.point and V.point
47        (selectBotDragQuadr=0, original code) can produce noisy patterns; this
48        improves when averaging only the other component (e.g. vVel for U bottom
49        drag) using wet-point method (selectBotDragQuadr=2) or not (=1).
50      - add options (bottomVisc_pCell) to account for partial-cell in bottom
51        friction (no-slip BC) thus getting the true distance from the bottom;
52        off by default since this also reduces model stability (explicit bottom
53        friction). Changes produce different machine truncation with linear-drag
54        + no-slip BC: update output of experiments exp4.stevens (10 digits) and
55        front_relax (bvp & mxl, 10 & 11 digits).
56    o model/src & mom pkgs:
57      - add one more level to vertical viscosity local arrays (Nr+1, previously Nr)
58        since no-slip bottom BC uses viscosity @ k+1 to update velocity @ level k
59      - for now and until vertical mixing scheme are updated to fill up level Nr+1,
60        just copy level Nr value to level Nr+1.
61    o doc:
62      - add notes form Abhisek Chakraborty on how to close Heat & Salt budgets.
63    o pkg/streamice:
64      - shelfice_init_varia.F, shelfice_init_fixed.F, shelfice_readparms.F,
65        SHELFICE.h: move array shelficemass to init_varia, initialise
66        from array shelficemassinit, which is set in init_fixed and
67        has option to be set from file; introduce array
68        shelficeMassDynTend array, set thru file in init_fixed
69      - NEW FILE: shelfice_step_icemass.F: update shelficemass from either
70        shelfIceFreshWaterFlux and shelficeMassDynTend or H_streamice in
71        pkg/streamice
72      - shelfice_thermodynamics.F: call shelfice_step_icemass if
73        SHELFICEMassStepping = .true.
74      - shelfice_ad_diff.list: add new subroutine shelfice_step_icemass.f
75    
76    checkpoint65h (2014/12/17)
77    o verification/global_ocean.90x40x15, global_ocean_ebm:
78      - update to generic controls.
79    o pkg/ctrl:
80      - ctrl_map_ini_genarr.F: test for igen>0
81      - ctrl_init_variables.F: add call to CTRL_MAP_INI_GENTIM2D.
82      - move gentim2d part of ctrl_map_ini_genarr.F to
83        new separate routine : ctrl_map_ini_gentim2d.F
84      - ctrl_cost_driver.F,ctrl_init.F ctrl_map_ini_genarr.F:
85        add time variable weights and cyclic controls (time mean,
86        seasonal cycle, etc) capabilities to gentim2d
87    o pkg/ecco:
88      - move reading of error, conversion to weights from
89        ecco_cost_init_fixed.F to ecco_toolbox.F (ecco_readwei)
90    o global_oce_llc90, cs32:
91      - activte sbo.
92      - CTRL_SIZE.h : add maxCtrlProc.
93      - activate the new genctrl capabilities.
94      - update following reorganization of global_oce_input_fields.tar.gz  
95    o pkg/ctrl/ctrl_ad_diff.list:
96      - add missing ctrl_init_rec.f
97    o tools/OAD_support/keepOriginal:
98      - add ctrl_init_rec.F
99    o model/src/the_main_loop.F, pkg/ctrl/ctrl_map_ini_genarr.F:
100      - avoid recomputations of xx_gentim2d_dummy.
101    o momentum diagnostics:
102      - move filling of diagnostics Um_Diss & Vm_Diss from mom_fluxform.F and
103        mom_vecinv.F to timestep.F (to include Smag-3D contribution).
104    o pkg/seaice/seaice_lsr.F:
105      - fix computation of BU/BV, make sure they are non-zero, only necessary
106        for cubed sphere exchanges and SEAICE_OLx/y>0.
107        This makes calling s/r fill_cs_corner_rl obsolete (removed).
108    o verification/global_ocean.cs32x15/input.seaice
109      - add test for strong implicit coupling and restricted addtive Schwarz
110        methods for LSR
111      - update results/output.seaice.txt
112    o verification/tutorial_global_oce_biogeo:
113      - AD & OAD set-up: switch off ALLOW_OLD_VIRTUALFLUX (like in fwd set-up)
114        and set PTRACERS_EvPrRn(1,2) to zero (for DIC & ALK);
115        update output_adm,_oadm,_tlm.txt
116    o pkg/dic:
117      - change default to "#undef ALLOW_OLD_VIRTUALFLUX" in DIC_OPTIONS.h
118      - add a stop when ALLOW_OLD_VIRTUALFLUX is defined and PTRACERS_EvPrRn
119        for tracer 1 & 2 is set (to avoid double counting of dilution effect).
120    o verification/tutorial_global_oce_biogeo:
121      - AD & OAD set-up: do not set PTRACERS_EvPrRn for tracer 1 & 2 since
122        dilution is already added by pkg/dic ALLOW_OLD_VIRTUALFLUX ;
123        update output_adm,_oadm,_tlm.txt
124    o eesupp/src:
125      - add fill_cs_corner_rl.F (_RL-copy of fill_cs_corner_rs.F)
126        and call it in seaice_lsr when using nonzero SEAICE_OLx/y
127    o pkg/seaice: introduce strongly implicit coupling, intended for stabilizing
128      LSR (following Hutchings et al. 2004)
129      - introduce zetaZ as a global variable (requires adjustments in
130        seaice_evp.F and seaice_jfnk.F) and compute analoguously to etaZ
131        in seaice_calc_viscosities.F
132      - new flag SEAICEuseStrImpCpl (default off)
133      - add new terms zetaZ*du/dy and zetaZ*dv/dx on both sides of the
134        momentum equations
135      - JFNK-solver (preconditioner) adjusted to allow using this method
136        (where it does not have any positive effect)
137    o pkg/seaice
138      - add overlap for restrictive additive Schwartz method also to LSR, but
139        turn it off by default (because it only seems to work for non-cubed
140        sphere/llc topologies)
141    o pkg/autodiff
142      - add extra exchanges in addummy_in_steppging also for mnc output
143    o pkg/seaice:
144      - add extra exchanges before dumping adjoint fields in seaice_ad_dump.F
145        to avoid stripes in the adjoint output (similar to addummy_in_stepping.F)
146    o pkg/obcs:
147      - add option to specify domain-connected piece Id along OB though files
148        (for now, only used to diagnose PhiVel; default =1 -> global correction)
149      - modify obcs_diag_balance.F to process each connected-part separately;
150        exclude OB where Id = 0 but keep the full divergence there (-> constant
151        Psi along this portion of OB and all inflow derived from grad(Phi))
152      - add example of OB-conect files in verification/so_box_biogeo/input.
153    o pkg/diagnostics:
154      - improve treatment of Open-Boundaries in Velocity-Potential calculation:
155      a) use non zero matrix element across OB and solve for Phi 1 grid point
156         outside OB (i.e, where tracer OBCS are applied).
157      b) global imbalance of inFlow/outFlow across OB: instead of modifying
158         velocity across OB, spread it uniformly along the OB in the RHS.
159    
160    checkpoint65g (2014/11/19)
161    o pkg/diagnostcis:
162      - add preconditioner off-diagonal factor (diagCG_pcOffDFac) as run-time param
163    o pkg/my82,pp81,kl10:
164      - fix ALLOW_3D_DIFFKR implementation (previously had no effect): use 3-D
165        field diffKr as background diffusivity to set minimum diffusivity value.
166    o pkg/seaice:
167      - add new parameter SEAICEuseEVPrev (for revisited EVP by
168        Bouillon et al 2013)
169      - add SEAICE_evpAlpha/Beta to namelist
170      - modify seaice_evp code to able to use SEAICEuseEVPrev. These changes
171        involve trivial re-ordering of divisions/multiplications that should not
172        have any effects, but ... they do change the results of lab_sea.hb87 so
173        that only 2 digits of agreement remain, in line with the general
174        instability/fragility of the evp-code. For now, I do not care and just
175        update the verification experiment
176    o pkg/ctrl : add generic pre-processing (xx_genarr2d_preproc etc)
177      - remove xx_genarr2d_numsmooth etc
178      - use xx_genarr2d_preproc etc instead
179      - carry out smooth_correl2D at initialization stage rather than during
180        time stepping.
181      - get smoothOpNb from xx_gentim2d_preproc
182    o global_oce_cs32 :
183      - add test of generic ecco capabilities.
184    o pkg/exf/exf_getsurfacefluxes.F :
185      - add to tmpUE/tmpVN rather than re-initializing them (conventional behavior).
186    o pkg/ctrl,ecco :
187      - omit un-necessary arguments to ctrl_cost_gen.F unless ECCO_CTRL_DEPRECATED
188        is defined.
189    o pkg/seaice: add diagnostics for Delta (deformation parameter)
190    o model/src:
191      - when ALLOW_3D_DIFFKR is defined, add a Warning if any of the vertical
192        diffusivity (background) is specified but ignored.
193    o verification:
194      - in testreport, convert hostname to lower case for default output dir name
195    o model, pkg : add useCTRL, useECCO parameters (on/off run time switch).
196    o pkg/dic: add modifications from Hajoon:
197      - add iron sedimentation flux function of the flux of PO4 out of bottom layer
198      - light attenuation: add self-shading effect by climatological Chlorophyll
199        (read from file).
200    o pkg/seaice/seaice_preconditioner.F : fix cpp flags, so that code also
201        compiles when SEAICE_ALLOW_DYNAMICS is undefined
202    o global_oce_llc90,cs32 : ecco_v4 verification exps now use separate
203        AUTODIFF_OPTIONS.h, CTRL_OPTIONS.h, ECCO_OPTIONS.h rather than
204        ECCO_CPPOPTIONS.h (i.e. replacing the deprecated, circumvoluted,
205        approach where CPP_OPTIONS.h includes an omnipotent
206        ECCO_CPPOPTIONS.h that superseeds pkgs '_OPTIONS.h').
207    o pkg/ctrl/ctrl_map_ini_genarr.F : include GMREDI_OPTIONS.h where
208        ALLOW_3D_KAPGM, ALLOW_3D_KAPREDI (to be added later) belong.
209    o pkg/seaice/SEAICE_SIZE.h : replace ALLOW_AUTODIFF_TAMC with ALLOW_AUTODIFF
210        to avoid needing AUTODIFF_OPTIONS.h anytime SEAICE_SIZE.h is included
211        (it seems that THSICE_SIZE.h, PTRACERS_SIZE.h have the same issue...)
212    o model/src, pkg/smooth, profiles, salt_plume, seaice, exf, ecco, ctrl :
213      add ECCO_OPTIONS.h, AUTODIFF_OPTIONS.h, CTRL_OPTIONS.h when needed
214      - ECCO_OPTIONS.h is needed when including ecco_cost.h, ecco.h
215      - AUTODIFF_OPTIONS.h is needed when including tamc.h, tamc_keys.h
216      - CTRL_OPTIONS.h is needed when including ctrl.h, optim.h, etc
217    o pkg/ctrl,ecco,exf :
218      - remove variables associated with NON-generic costs,
219        unless ECCO_CTRL_DEPRECATED is defined.
220      - remove NON-generic NON-obcs controls,
221        unless ECCO_CTRL_DEPRECATED is defined.
222    o pkg/ctrl : added ctrl_local_params.h
223    o pkg/ecco : added ecco_local_params.h
224    o verification : added ECCO_CTRL_DEPRECATED to most as and oad
225        experiments, which will progressively be removed once the
226        experiments are revised to use only generic controls/costs.
227    
228    checkpoint65f (2014/10/13)
229    o pkg/ctrl, ecco, seaice : minor changes in headers
230    o global_oce_llc90,cs32 : ecco_v4 verification exps now test generic
231        cost function and control capabilities added since checkpoint65c.
232    o pkg/ctrl: regroup all obcs ctrl variables in CTRL_OBCS.h.
233    o pkg/ecco: increase modularity and improve logic
234      - ecco_toolbox.F (new) : basic operations that are often used,
235        including ecco_zero, ecco_cp, ecco_cprsrl, ecco_diffmsk,
236        ecco_addcost, ecco_add, ecco_div, ecco_readbar.
237      - cost_gencal.F (new) : determine filnames and records.
238      - cost_genread.F, cost_generic.F : condense code using ecco_toolbox.
239      - cost_generic.F : use spzeroloc rather than hard-coded -9999,
240        and exploit the above functions leading to more compact code.
241      - cost_genread.F : rm un-necessary arguments, re-arrange args order.
242      - ecco_check.F, ecco_readparms.F : bring logic up to date (using_tpj,
243        using_ers, using_gfo, using_mdt is now only defined within gencost)
244    o pkg/ecco: extend generic cost capabilities
245      - pkg/ecco : added 3D gencost (ALLOW_GENCOST3D), added gencost
246        capabilities via gencost_preproc (+ _c,_i,_r related params),
247        gencost_posproc (+ _c,_i,_r related params), gencost_nrecperiod,
248        gencost_outputlevel arguments to cost_generic
249      - pkg/ecco/cost_genread.F (new) : interface between cost_generic
250        and active_read, making room for gencost_preproc to take effect.
251        Added preproc code ('climmon') to replace GENERIC_BAR_MONTH.
252      - pkg/ecco/cost_generic.F :
253        compute and store misfit maks*(model-data) in localdif that is
254        then used in cost and for output, output misfit if outlev.GT.0
255      - pkg/ecco/cost_averagesfields.F : depend on gencost_barskip
256        rather gencost_barfile for deciding whether to write barfile
257      - pkg/ecco/ecco_cost_driver.F : extract call to cost_profiles from cost_hyd
258      - pkg/ecco/ecco_cost_init_fixed.F : extract gencost weights from
259        ecco_cost_weights, re-activate ecco_summary, determine gencost_barskip
260      - pkg/ecco/ecco_summary.F : report gencost variables
261      - pkg/ecco/cost_gencost_customize.F : treat case of scatterometer costs
262    o pkg/sea/SEAICE_OPTIONS.h : add ALLOW_COST_ICE, ALLOW_SEAICE_COST_SMR_AREA
263    o pkg/ecco: internal re-organization
264      - resolve un-necessary dependancies within pkg/ecco and to pkg/ctrl
265        (rm includes of optim.h and ctrl.h, replace optimcycle with eccoiter,
266        mv relevant variables definition from ecco_cost.h to ecco.h,
267        make sure gencost routines only include ecco.h)
268      - throughout : add missing CCP switches, rm unused variables,
269        and rm un-necessary CPP switches
270      - throughout gencost routines : replace modelstartdate with
271        gencost_startdate when needed
272      - cost_bp_read.F : use arguments, instead of common blocs
273        so that it can be used also by (new) cost_gencost_bpv4.F
274      - ecco_init_varia.F : initialize RHOsumGlob_0, VOLsumGlob_0
275      - ecco_phys.F : compute etanFull
276      - ecco_readparms.F : rename using_topex as using_tpj, add
277        bpv4-grace to gencost list, initialize added parameters
278      - ecco_summary.F : include SIZE.h needed for augmented ecco.h
279    
280    checkpoint65e (2014/09/28)
281    o pkg/obcs:
282      - replaced the just-added CPP options with run-time variables
283        (see pkg/obcs/OBCS_PARAMS.h for details)
284    o pkg/obcs:
285      - add additional CPP options for sponge boundary layers
286        (see pkg/obcs/OBCS_OPTIONS.h for details)
287    o pkg/atm_phys:
288      - implement simple (obliquity only, assuming circular planet orbit)
289        seasonal cycle for incoming insolation ; used when run-time parameter
290        "select_incSW" is set to 1 ; by default (=0), uses old unchanged formula.
291    o pkg/exf, pkg/ecco, pkg/ctrl:
292      - add ctrlUseGen and .NOT.ctrlUseGen exclusive brackets
293      - activate gentim2d for xx_atemp,xx_aqh,xx_swdown,xx_lwdown,xx_precip
294      - implement gentim2d for xx_tauu, xx_tauv
295    o pkg/ctrl, pkg/ecco :
296      - fix and complement the generic controls implementation
297    o pkg/exf/exf_getclim.F, exf_getffields.F, exf_getsurfacefluxes.F,
298        pkg/shelfice/shelfice_thermodynamics.F,
299        verification/hs94.1x64x5/code_ad/ctrl_map_gentim2d.F,
300        verification/hs94.1x64x5/code_oad/ctrl_map_gentim2d.F :
301      - add weight in CTRL_GET_GEN calls
302    o pkg/ctrl :
303      - ctrl_get_gen.F : add weight as input parameter, and apply
304        it directly rather than using smooth_correl2Dw (to be retired).
305      - ctrl_map_gentim2d.F : add wgentim2d in CTRL_GET_GEN call
306    o pkg/ctrl :
307      - introduce run time switch ctrlUseGen (in ctrl.h, ctrl_check.F,
308        ctrl_init_variables.F, ctrl_readparms.F, ctrl_summary.F)
309      - re-activate ctrl_summary (call in ctrl_init.F)
310    o pkg/ctrl/ctrl_cost_gen.F :
311      - fix CCP brackets, remove un-necessary myiter, mytime
312    o pkg/ecco, pkg/ctrl :
313      - remove cost_genctrl.F (now pkg/ctrl/ctrl_cost_driver.F)
314      - remove cost_forcing_gen.F (now pkg/ctrl/ctrl_cost_gen2d.F)
315      - add ctrl_cost_driver.F (replaces pkg/ecco/cost_genctrl.F)
316      - add ctrl_cost_gen2d.F (replaces pkg/ecco/cost_forcing_gen.F)
317    
318    checkpoint65d (2014/09/15)
319    o pkg/ctrl/CTRL_GENARR.h, ctrl_readparms.F :
320      - add xx_genarr2d_bounds,xx_genarr3d_bounds,
321        xx_genarr2d_numsmooth, xx_genarr3d_numsmooth
322    o pkg/ctrl/ctrl_map_ini_genarr.F :
323      - remove compilation failure
324      - replace hard coded example
325      - use ctrl_map_ini_gen2D, 3D
326    o pkg/ctrl/ctrl_pack.F, ctrl_unpack.F :
327      - on/off switch based upon xx_genarr2d_weight,3d
328    o src/packages_init_variables.F :
329      - regroup pkg/estimation calls
330      - remove CTRL_MAP_INI, CTRL_MAP_INI_ECCO
331        (moved to ctrl_init_variables)
332    o cost/cost_init_varia.F :
333      - remove ecco_cost_init_varia
334        (moved to ecco_init_varia)
335    o ctrl/ctrl_init_variables.F :
336      - add CTRL_MAP_INI, CTRL_MAP_INI_ECCO
337      - add CTRL_MAP_INI_GENARR, SEAICE_CTRL_MAP_INI
338    o ctrl/ctrl_map_ini.F :
339      - remove ctrl_map_ini_genarr, seaice_ctrl_map_ini
340        (moved to ctrl_init_variables)
341    o ctrl/ctrl_map_ini_ecco.F :
342      - remove ECCO_PHYS (mv to ecco_init_varia)
343      - remove seaice_ctrl_map_ini (mv to ctrl_init_variables)
344    o ecco/ecco_ad_diff.list :
345      - add ecco_init_varia.f
346    o ecco/ecco_init_varia.F
347      - new routine
348    o pkg/streamice:
349      - move call to STREAMICE_INITIALIZE_PETSC from the_model_main.F
350        to streamice_init_fixed.F ; fix setting of STREAMICEisOn.
351      - from model/src, only call pkg/streamice routines if useStreamIce is TRUE.
352    o pkg/generic_advdiff:
353      - fix bug causing negatives in GAD_SMOLARKIEWICZ_HACK, introduced 8/8/2014.
354    o pkg/exf:
355      - exf_getffields.F : add xxg_atemp, xxg_aqh, xxg_swdown, xxg_lwdown,
356         xxg_precip capability
357      - exf_wind.F : no need for ALLOW_WSPEED_CONTROL cpp switch
358    o pkg/ctrl:
359      - ctrl_pack.F, ctrl_unpack.F : omit (un)packing of undefined xx_gentim2d
360    o model/src/load_fields_driver.F :
361      - move call to CTRL_MAP_GENTIM2D ahead of BULKF_FIELDS_LOAD, EXF_GETFORCING
362        so xx_gentim2d can be applied to e.g. exf fields in a timely manner.
363    o OpenAD verification experiments:
364      - Include explicitly AUTODIFF_OPTIONS.h, COST_OPTIONS.h, and CTRL_OPTIONS.h
365        in src files (to enable to skip the ECCO_CPPOPTIONS.h);
366        for now, only in pkgs used in OpenAD verification experiments.
367      - Change all except one (halfpipe_streamice) OpenAD experiments to use pkg
368        specific option file (AUTODIFF_OPTIONS.h, COST_OPTIONS.h & CTRL_OPTIONS.h)
369        instead of using ECCO_CPPOPTIONS.h (with all relevant options in it).
370        This applies to both TAF (*/code_ad/) and OpenAD (*/code_oad/) tests.
371    o OpenAD verification tests:
372      - finish removing ALLOW_AUTODIFF_OPENAD (replaced by ALLOW_OPENAD);
373      - finish replacing ALLOW_AUTODIFF_TAMC by ALLOW_AUTODIFF (except for
374        tape/storage which are specific to TAF/TAMC) in pkgs used in OpenAD exp.
375      - leave ALLOW_AUTODIFF_TAMC undef in OpenAD verification tests (*/code_oad/)
376        and remove local copy of "tamc.h" (needed only if ALLOW_AUTODIFF_TAMC).
377    o model/src & generic_advdiff:
378      - change hard-coded loop-range in S/R APPLY_FORCING_T/S to set T & S
379        forcing over 0:sNx+1, 0:sNy=1 (instead of just 1:sNx,1:sNy): Model
380        dynamics requires valid tracer forcing only over tile interior but, for
381        some diagnostics, may need to extend it over 1 point in tile halo region.
382      - in gad_calc_rhs.F, update calls to gmredi_x/ytransport to get valid
383        tendency over i,j_Min,Max range. This allows to simplfy i,j_Min,Max
384        setting in temp/salt/ptracer_integrate.F
385    o pkg/dic:
386      - multiply tracer tendencies by maskInC (if ussing OBCS) before updating
387        gchem tracers: this allows to skip the 2nd call to OBCS_APPLY_PTRACER
388        in gchem_forcing_sep.F
389    o pkg/autodiff & obcs:
390      - add storage of current OB values for U & V (was already done for T & S).
391    
392    checkpoint65c (2014/08/30)
393    o pkg/dic:
394      - take out of dic_atmos.F the initialisation part (corresponding to istate=0)
395        and move it to new S/R DIC_INI_ATMOS ; also simplify the dependencies for
396        AD compilers (but still a Pb with multi-threading and Ajoint dependencies).
397    o verification:
398      - new experiment testing OBCS and DIC pkgs, using params & output from
399        tutorial_global_oce_biogeo but limited to a sub-domain around Drake
400        passage: take OBCS from the last year of a 2 yrs simulation and initial
401        conditions from t=1.yr while keeping the same forcing.
402    o model/src:
403      - when allowFreezing=T, only reset below freezing initial Temp to Tfreezing
404        (at any k) if checkIniTemp is not set to FALSE (default checkIniTemp=T).
405    o pkg/diagnostics (Stats-Diags):
406      - re-write S/R DIAGSTATS_CALC (more similar to TARGET_NEC_SX part) to:
407        a) refine region where stats are computed, excluding where arrhFac=0 ;
408        b) fix missing interior mask (use with OBCS) in 3-D fields statistics;
409        c) extend regional stats over the region edges (for U or V pt location).
410    o pkg/gchem:
411      - add a (2nd) call to OBCS_APPLY_PTRACER in gchem_forcing_sep.F (needed since
412        pkg/dic is currently changing/updating ptracers values beyond the OB).
413    o verification (hs94):
414      - convert Held & Suarez external_forcing.F (from hs94.cs, with Sigma-coords
415        bits) to apply_forcing.F and undef USE_OLD_EXTERNAL_FORCING in experiments
416        hs94.cs-32x32x5 and tutorial_held_suarez_cs ; also use the same version of
417        apply_forcing.F in 2D hs94 (fwd, ad & oad) but keep LatLon hs94 unchanged.
418    o pkg/ptracers:
419      - implement Adams-Bashforth on pTracers (instead of on tracer tendency),
420        switched on by setting PTRACERS_doAB_onGpTr=F (default set to doAB_onGtGs)
421      - change exp4 secondary test (input.nlfs) to test AB on T & S & pTracer
422        with AB-2 code (so that it get tested).
423    o model/src:
424      - allow to apply Adams-Bashforth on Temp & Salt (instead of on gT,gS)
425        with AB-2 code (previously only available with AB-3 code).
426        Also move the code (call to ADAMS_BASHFORTH S/R) form thermodynamics.F
427        to temp/salt_integrate.F (since the 2nd part of gt/sNm1 update is done
428        there, by calling CYCLE_AB_TRACER).
429    o pkg/generic_advdiff:
430      - change Tracer argument (drop bi,bj indices) in S/R GAD_CALC_RHS,
431        GAD_C2_ADV_R, GAD_U3_ADV_R, GAD_C4_ADV_R, GAD_DIFF_R, GAD_BIHARM_R
432        + also in GMREDI_X/Y/RTRANSPORT ; and update corresponding calls in
433        S/R temp/salt/ptracers_integrate.F
434    o model/src & pkg/ptracers:
435      - remove common block variables gT,gS (in DYNVARS.h), except when
436         USE_OLD_EXTERNAL_FORCING is defined; update TAF storage accordingly.
437      - remove common block variable gPtr.
438    o model/src & pkgs:
439      - change gTracer (and/or tracer) argument (drop bi,bj indices) in S/R
440         ADAMS_BASHFORTH(2&3), CYCLE_(AB_)TRACER, FREESURF_RESCALE_G,
441         IMPLDIFF, SOLVE_TRIDIAGONAL & _PENTADIAGONAL, GAD_SOM_ADVECT,
442         GAD_ADVECTION, GAD_CALC_RHS, GAD_IMPLICIT_R, TIMEAVE_CUMUL_DIF_1T
443      + change accordingly all calling S/R.
444      - use local temperature/salinity/ptracer tendency array (without bi,bj)
445        in S/R temp/salt/ptracers_integrate.F
446    o pkg/seaice:
447      - move computation of stress contributions to rhsU/V in s/r seaice_lsr
448        to separate s/r seaice_lsr_rhsu/v in order to be able to re-use code
449      - make u/vIceC local variables if SEAICE_CGRID is defined only to be used
450        in seaice_lsr
451      - seaice_lsr.F: make local 4D arrays UXX, VYY, etc 2D
452        in s/r seaice_lsr_calc_coeffs
453    o pkg/mdsio:
454      - in MDS_READ/WRITE_FIELD, stop if file-name (+prefix) is too long
455        (e.g., > MAX_LEN_MBUF -90 ) or, in INI_MODEL_IO, if mdsioLocalDir is
456        too long (e.g., > MAX_LEN_FNAM/2 )
457    
458    checkpoint65b (2014/08/12)
459    o pkg/matrix:
460      - pass, as argument, updated tracer field to S/R MATRIX_STORE_TENDENCY_EXP
461    o model/src:
462      - fix initialisation of geothermalFile; compile geothermal-flux code in
463        natl_box verification experiment.
464    o model/src & pkg/down_slope:
465      - push the k loop inside S/R TIMESTEP_TRACER (now called outside the k loop).
466      - in dwnslp_apply.F, update tracer tendency instead of the future tracer
467        field and call S/R DWNSLP_APPLY before TIMESTEP_TRACER; this affects
468        results at machine truncation level: update output of experiments
469        global_ocean.90x40x15.dwnslp (FWD) and lab_sea.noseaicedyn (AD).
470    o pkg/diagnostics (Stats-Diags):
471      - do not cumulate the full volume when DIAGNOSTICS_FILL is
472        called with bibjFlg < 0 (no increment of the counter for 2D/3D diag);
473        This fix the mean statistics when DIAGNOSTICS_FILL is called multiple
474        times (but Min,Max and StD are still wrong).
475    o model/src:
476      - add geothermal flux forcing: read in ini_forcing.F as time-constant
477        field "geothermalFlux" applied in S/R APPLY_FORCING_T (apply_forcing.F)
478    o model/src:
479      - move CYCLE_TRACER calls from tracers_correction_step.F to temp/salt/ptracer
480        _integrate.F so that, when leaving S/R THERMODYANMICS, theta,salt and pTrac
481        arrays are already updated while adjustments (filters, conv.adjustment) are
482        still applied later, in S/R TRACERS_CORRECTION_STEP.
483    o model/src:
484      - store in common bloc array "rhoInSitu" the virtual potential temperature
485        anomaly that is used to compute geopotential: this make the atmos code
486        more similar to ocean code which already uses rhoInSitu in calc_phi_hyd.F
487    o pkg/seaice/seaice_lsr.F
488      - rename integer variable ilcall to ipass (that's what it is called
489        in the residual diagnostics
490      - change time stepping for NPSEUDOTIMESTEP > 2 (does not change the
491        default) for improved non-linear convergence of the first few steps
492      - adjust a few comments and add new ones to explain some of the store
493        directives
494    o pkg/generic_advdiff (& ptracers):
495      - re-work the code to check for valid advection scheme and for minimum
496        size of overlap (now stored in local common bloc in gad_advscheme.F)
497    o pkg/seaice: another attempt to make the adjoint work for sea ice dynamics
498      - re-initialize more variables in seaice_lsr: u/vIceC, u/vIceNm1
499      - add an auxilliary variable "bet" and fix store directives and keys in
500        seaice_lsr_tridiagu/v, this seems to do the trick (i.e. more or
501        less exact gradients in my tests); but there are still
502        recomputation warning (although gradients are sort of OK), when
503        SEAICE_LSR_VECTORIZE is not defined, so this flag and
504        SEAICE_LSR_VECTORIZE_ZEBRA are recommended for efficiency.
505      - update verification experiments lab_sea.
506      - change some comments in S/R seaice_calc_viscosities
507    o model/src:
508      - if staggerTimeStep=T, always apply exchange to velocity field in
509        do_stagger_fields_exchanges.F instead of in do_fields_blocking_exchanges.F
510        (independent of using multi-dim advection or not); no effect on FWD run
511        but affects AD results (at machine truncation level): update output of
512        experiment 1D_ocean_ice_column (ad: 12 digits), hs94.1x64x5 (ad,oad: 13.d)
513        and isomip (oad: 12.d).
514    o pkg/generic_advdiff:
515      - stop if doAB_onGtGs is set to FALSE but ignored
516      - refine warning related to stability of tracer time-stepping
517        regarding internal wave dynamics.
518      - setting of AdamsBashforth_T,S when doAB_onGtGs=F: remove condition
519        on staggerTimeStep & implicitIntGravWave (will now get a warning
520        if potentially unstable).
521    o pkg/kl10:
522      - add new pkg "kl10" for mixing due to internal wave breaking, from
523        http://www.sciencedirect.com/science/article/pii/S1463500310000144
524        (contribution from Jody Klymak), tested in verification experiment
525        verification/internal_wave/input.kl10/
526    o isomip experiment:
527      - test pkg/shelfice with Non-Lin Free-Surf in one of the FWD set-up
528        (input.htd) and update the output.
529    o cd_code experiments:
530      - use default cd_code options (#undef CD_CODE_NO_AB_MOMENTUM &
531        #undef CD_CODE_NO_AB_CORIOLIS) in experiments: cfc_example (fwd)
532        global_ocean.90x40x15 (ad & oad) and OpenAD (ad & oad) and
533        update the corresponding output.
534    o pkg/seaice:
535      - reduce the number of include files and store directives in
536        S/R seaice_lsr_tridiagu/v
537      - change the order of loops in one case in S/R seaice_lsr_tridiagv
538        (only for SEAICE_VECTORIZE_LSR_ZEBRA defined), which allows me to
539        get rid off one store directive (a TAF bug?)
540      - add one more instance of ifdef SEAICE_VECTORIZE_LSR_ZEBRA in
541        S/R seaice_lsr_tridiagv to change the loop range for consistency
542      - remove ilcall, m from parameter list of S/R seaice_lsr_tridiagu/v
543      - fix a bug that affects the JFNK solver: replace sNx/y by i/jMax in
544        S/R seaice_lsr_tridiagu/v (requires update of
545        offline_exf_seaice/input.dyn_jfnk)
546    
547    checkpoint65a (2014/07/27)
548    o model/src:
549      - Non-Lin Free-Surf in p/z coords: allows hFacW,S to be larger than
550        surrounding hFacC=1 @ edge of a step with different kSurfC on either side
551        (topo in p-coords, ice-shelf in z-coords); update output of experiments
552        tutorial_global_oce_in_p and isomip (both AD and OpenAD output).
553    o model/src:
554      - collect momentum forcing tendency into local 2-D array (passed as argument
555        to apply_forcing S/R); this simplifies mom. Forcing diagnostics and CD_CODE
556        parts in timestep.F (without CD_CODE_NO_AB_MOMENTUM defined = the default);
557        affects results at machine truncation level (e.g., if using OBCS_SPONGE).
558      - collect T & S forcing tendency into local 2-D array (passed as argument to
559        apply_forcing S/R); add 3-D diagnostics for temp & salt forcing tendency.
560        affects results at machine truncation level (e.g., ocean: if using
561        SHORTWAVE_HEATING ; atmos: if using FrictionHeating or (atm_Rq<>0) moist
562        correction due to vertical advection).
563      - update output of experiments: fizhi-cs-32x32x40 (13 digits),
564        global_ocean.cs32x15 (fwd: icedyn, seaice, thsice, all 3 @ 11d; adm & tml:
565        seaice_dynmix & thsice, fwd grd @ 3 & 8), hs94.1x64x5 (ad grd @ 13),
566        obcs_ctrl (ad & fwd grd @ 12 & 7).
567    o pkg/ptracers & diagnostics:
568      - use ptracers (short) name (instead of long one) to make ptracers diagnostics
569        title (to avoid some unexpected truncation); sort out ptracers diags units.
570      - collect ptracer forcing tendency into local 2-D array (passed as argument
571        to apply_forcing S/R); add 3-D diagnostics for ptracers forcing tendency.
572    
573    checkpoint65 (2014/07/18)
574    o pkg/fizhi:
575      - add parenthesis around fizhi tendencies in fizhi_tendency_apply.F: this
576        affects results at machine truncation level. Update output of experiments
577        fizhi-cs-32x32x40 (12 digits for cg2d) & fizhi-cs-aqualev20 (13 digits).
578    o pkg/seaice: more clean up
579      - rename TAF common block tapes to be more consistent and remove
580        unnecessary duplicates
581      - add store directives to remove more recomputations, but use smaller
582        tapes (and adjust keys) when SEAICE_LSR_ADJOINT_ITER is undefined.
583        The idea behind this flag is to reduce the memory footprint when the
584        adjoint of the LSR is not required. As of now, defining the flag
585        SEAICE_LSR_ADJOINT_ITER increases 4 common block tapes for 2D field by
586        a factor of SOLV_MAX_FIXED (=500 by default in SEAICE_SIZE.h).
587        For experiment offline_exf_seaice, this means on a linux box with gfortran
588        nearly a factor of 10 (but keep in mind there is mostly seaice code in
589        this experiment):
590        > size mitgcmuv_ad
591        text    data        bss     dec        hex
592        5100659 1216  220458952  225560827  d71c8fb
593        5339425 1200 1868783272 1874123897 6fb4dc79 (SEAICE_LSR_ADJOINT_ITER)
594        but only a moderate increase of 36% for global_ocean.cs32x15:
595        text    data        bss     dec        hex
596        6695027 1648 1014578664 1021275339 3cdf6ccb
597        6695203 1648 1382505320 1389202171 52cd8afb (SEAICE_LSR_ADJOINT_ITER)
598      - note: there are still recomputations in global_ocean.cs32x15 and
599        offline_exf_seaice and the gradient agreement changes (gets a
600        little worse) for global_ocean.cs32x15 (-> update output_adm.seaice.txt)
601      - in general, the AD gradients still are wrong
602    o OpenAD
603      - clean up code_oad/ directories somewhat by moving files
604        dontCompile, dontTransform, keepOriginal to OAD_support/
605    o model/src:
606      - using MOM fluxform and Non-Lin Free-Surf with momDissip_In_AB=F
607        (not currently tested): add dissipation terms before NLFS rescaling of
608        tendencies (previously done after).
609    o pkg/diagnostics:
610      - write stats-diags in ascii file with more digits (same as in monitor).
611    o pkg/down_slope:
612      - drop the bi,bj dimension of argument recip_hFac in S/R DWNSLP_APPLY; with
613        NLFS (not tested), use new recip_hFac value in order to conserve tracer.
614    o model/src:
615      - new file "apply_forcing.F" containing all the code previously in
616        external_forcing.F, but with new argument list: pass, as new argument,
617        the current level tendency array to update (instead of a direct update
618        of the common bloc array). Change the corresponding calls.
619      - add CPP option USE_OLD_EXTERNAL_FORCING (default is undef) to use
620        EXTERNAL_FORCING_U,V,T,S subroutines (for backward compatibility).
621    o pkg/seaice/seaice_lsr, a little bit of clean up
622      - rearrange some code blocks, so that now all calculations for
623        setting up the right-hand-sides done within one single block
624        (I find that easier to read and understand)
625      - rearrange freedrift-code to reduce the number of ifdefs
626      - adjust some indentations and comments
627    
628    checkpoint64z (2014/07/10)
629    o model/src and several pkgs:
630      - change argument list of all S/R called from external_forcing.F and
631        called from ptracers_forcing.F (renamed to ptracers_apply_forcing.F)
632        to pass, as argument, the current level tendency array to update
633        (instead of a direct update of the common bloc array).
634      - change also (in the same way) argument list of PTRACERS_APPLY_FORCING;
635      - rename taueddy_external_forcing.f to taueddy_tendency_apply.F
636    o pkg/seaice/seaice_lsr.F
637      - always initialize local arrays in seaice_lsr_tridiagu/v
638      - add more local tapes to seaice_lsr_tridiagu/v
639      - move storing u/vice(:,:,bi,bj) out of seaice_lsr_tridiagu/v, but
640        keep it in bi/bj loop; this seems to be essential
641      - gradients are still wrong but only by 4-7 orders of magnitude
642        instead of 15 orders of magnitude, lab_sea improves a little
643    o pkg/seaice
644      - (pkg/autodiff) remove storing/restoring of seaiceMaskU/V that
645        generates unnecessary code in seaice_lsr_ad
646      - add more store directives in seaice_lsr to avoid unnecessary code
647        in seaice_lsr_ad
648      - exclude some residual computations in seaice_lsr when
649        ALLOW_AUTODIFF_TAMC is defined in order to avoid unnecessary code
650        in seaice_lsr_ad
651      - add more storing, a new tape (model/src/the_main_loop.F) and
652        another key for SEAICE_LSR_VECTORIZE_ZEBRA (the local keys ilockey
653        and klockey should be checked by a specialist)
654      - modify ( define SEAICE_VECTORIZE_LSR and SEAICE_LSR_ADJOINT_ITER )
655        and update lab_sea after previous changes in pkg/seaice below
656    o pkg/autodiff:
657      - introduce useSmoothCorrel2DinAdMode, SEAICEapproxLevInAd, and
658        viscFacInAd : run time parameters allowing for adjoint switches
659        note : logic for useSmoothCorrel2DinAdMode is in ctrl_readparms.F
660    o pkg/ecco:
661      - introduce cost_gencost_boxmean.F that computes a box mean
662        temperature (for use in adjoint sensitivity studies).
663    o model/src/set_defaults.F : initialize viscFacAdj to 1.
664    o pkg/mom_common/mom_calc_visc.F:
665      - ifdef ALLOW_AUTODIFF then include viscFacAdj factor.
666    o pkg/seaice/seaice_summary.F:
667      - statement for SEAICEadjMODE now in autodiff_readparms.F
668    o pkg/seaice:
669      - remove some store directives and add new ones in an effort to get
670        finally rid off the recomputation warnings. This is successful
671        when SEAICE_VECTORIZE_LSR ***and*** SEAICE_LSR_ADJOINT_ITER are
672        defined (i.e. no extensive recomputation warnings left), but there
673        are still too many recomputations on the solver iteration level
674      - define SEAICE_VECTORISZE_LSR in offline_exf_seaice/code_ad/SEAICE_OPTIONS.h
675      - move definition of MPSEUDOTIMESTEPS into TAMC-block in
676        SEAICE_SIZE.h
677      - add a store directive in S/R seaice_calc_viscosities
678    o pkg/seaice (ITD code):
679      - fix definition of Hlimit for multi-threaded case
680      - use double precision arithmetic to compute Hlimit: this affects results;
681        update output of experiment seaice_itd.
682    o replace content of verification/seaice_itd
683      - instead of a 1D column use the configuration of offline_exf_seaice
684        to test the ice thickness distribution code with ridging
685      - this is a first shot at this experiment
686      - change of some defaults of ridging parameters SEAICEhStar (from
687        100 to 25) and SEAICEmuRidging (from 5 to 3) in seaice_readparms.F
688        and lot of new comments.
689    
690    checkpoint64y (2014/06/20)
691    o pkg/seaice/seaice_reg_ridge.F:
692      - modify the regularization of very small volumes of ice; only check
693        total volume HEFF, and do not apply correction to individual ice
694        classes because that leads to funny patterns in the heat and fw-fluxes
695        into the ocean. Adjust seaice_itd/results/output.txt
696      - replace nITD by SEAICE_multDim in loop-ranges
697    o pkg/exf:
698      - add code to process the case field period = -12. with UV interpolation.
699      - move debug print (formerly active when exf_verbose=T) from EXF_getFFieldRec
700        into S/R that calls it (i.e., exf_set_gen.F, exf_set_uv.F & obcs_exf_load.F)
701    o verification/global_with_exf:
702      - switch all fields period to -12. (was previously untested) in input/data.exf
703        (but keep secondary test ".yearly" unchanged); update the reference output.
704    o pkg/cal:
705      - new calendar type "noLeapYear" for 365 days calendar without any leap year.
706    o pkg/exf:
707      - new integer parameter "exf_debugLev" (default set to main model debugLevel)
708        to replace logical switch "exf_verbose"
709      - report in STDOUT when loading a new record (if exf_debugLev >= 3)
710    o pkg/sbo:
711      - update from Katherine Quinn: evaluate mass directly from density and SSH
712        (budget using Finite Volume method) instead of from bottom pressure.
713      - allow testreport to collect few selected SBO output ; tested in exp.
714        global_ocean.90x40x15 (after updating the results, to include SBO output).
715      - fix some multi-threading issues (in output part).
716    o model/src & most packages:
717      - always call {PKG}_READPARMS even if corresponding use{PKG}=F;
718      - in {PKG}_READPARMS, in case use{PKG}=F: add a call to new S/R
719        PACKAGES_UNUSED_MSG to print a weak warning when parameter file
720        "data.{pkg}" exist ; and leave the S/R (return) just after.
721      - more standard LAND pkg interface (land_init_fixed.F, land_check.F).
722        + call LAND_READPARMS from packages_readparms.F
723    o pkg/seaice:
724      - remove code that resets useThSice in S/R seaice_readparms and
725        replace it by a warning in S/R seaice_check
726      - remove parameter MULTDIM, replace with nITD and runtime
727        parameter SEAICE_multDim (still hard-wired to nITD if
728        SEAICE_ITD is defined)
729    
730    checkpoint64x (2014/05/24)
731    o verification/lab_sea:
732      - update adjoint and TLM output following changes to pkg/salt_plume
733      - un-do the update after putting back local recip_Cp in few places.
734    o pkg/salt_plume: modifications by An Nguyen:
735      - add capability to do brine rejection (salt-plume) as function of
736        volume+tracers (instead of only salinity tracer).
737      - conserve volume by exchanging volume from each kLev to above to
738        accommodate in-coming brine volume
739      - store surface and klev exchanged fraction + volume in 4 new 3-d arrays
740      - switch KPP surf buoyancy due to brine forcing to 3-d
741        (3 more 3-d arrays, 2 for SPforcing[T,S], 1 for boplume)
742      - add salt_plume_volfrac, salt_plume_apply, salt_plume_tendency_apply_t
743      - unrelatedly, also add ad-hoc capability to vary salt_plume scheme
744        in East/West Arctic.
745    o pkg/sbo:
746      - incorporate modifications from Katherine Quinn to enable the use of sbo
747        pkg in ECCO-v4 set-up ; remove SBO-TimeAve output ; add monitor-like
748        output for future testreport verification (unfinished).
749    o pkg/atm_phys:
750      - change diagnostics (AtPh_Trf & AtPh_Qrf) of DARGAN_BETTSMILLER S/R:
751        skip the reseting of t_ref & q_ref to initial t & q ; this preserve the
752        output of S/R CAPECALCNEW (Parcel temp & q) for diagnostics.
753    o pkg/seaice
754      seaice_calc_ice_strength.F: modify expression to avoid divisions
755        (affects truncation)
756      seaice_do_ridging.F: clean up the insectarium
757      - fix a bug that was compensated by areaScaling (-> remove areaScaling code)
758      - added SEAICEsnowFracRidge to redistributed snow (2nd bug)
759      - set closing/openingRate to zero where no extra iteration is need (3rd bug)
760      - add some debugging information and error messages (warnings)
761    o model/src: modifications relatd to atmosphere p*:
762      - Switch to more accurate p* coordinate slope term (calc_grad_phi_hyd.F)
763      - With p* or Sigma-P, use constant reference Pot.Temp (thetaConst) instead
764        of vertical profile tRef in geopotential background and anomaly.
765      - Acount for true p* correction in theta <-> T conversion in pkg/aim_v23
766        and pkg/atm_phys.
767      - Update FWD output of experiments: aim.5l_cs (x2), fizhi-cs-32x32x40,
768        fizhi-cs-aqualev20, fizhi-gridalt-hs, tutorial_held_suarez_cs, cpl_aim+ocn.
769    o pkg/seaice: fix a bug in seaice_prepare_ridging.F, forgot a sqrt
770    o pkg/ptracers: compute ptracer source/sink due to linear free surface.
771        not used right now, but can be used in BGC packages to fix conservation.
772    o pkg/dic, pkg/gchem: move tracer_meanarea to gchem, so it can be used by
773        other packages too.
774    o pkg/seaice/seaice_calc_ice_strength.F: replace SEAICE_rhoSnow by
775        SEAICE_rhoIce in the Rothrock (1975)-type strength calculations (bug fix)
776    o model/src:
777      - since we have several heat capacity (even in model/src), define "recip_Cp"
778        as local variable (no longer in common block) to avoid any confusion.
779      - add thetaConst in PARAMS.h (to be used with pStar or sigma-P coords).
780    o pkg/exf:
781      - from Jeff Scott: add option (#define EXF_CALC_ATMRHO) to calculate local
782        air density as function of air Temp, Humidity and atm pressure.
783    
784    checkpoint64w (2014/05/02)
785    o verification:
786      - update output_adm.txt files for experiment global_ocean.cs32x15 (seaice &
787        seaice_dynmix) and lab_sea (primary test & noseaicedyn): moving/changing
788        code from seaice_growth.F & seaice_advdiff.F to new ridging routines
789        seaice_reg_ridge.F seaice_do_ridging.F affects AD gradient
790        (down to 8-7 matching digits for global_ocean and 5-6 for lab_sea).
791    o model/src: for atmosphere in p* coords:
792      - store factor rStarFacC**atm_kappa (= pStarFacK) in common block
793      - implement more accurate p* coordinate slope term (in calc_grad_phi_hyd.F),
794        but not yet activated.
795    o pkg/seaice: fix restart problem for ITD with new ice strength parameterisation:
796      - move computation of opnWtrFrac = 1-AREA to before computing ice strength
797      - this changes the results (but not for any verification experiment, because
798        none tests this), but avoids having an extra field in the restart files
799    o pkg/seaice: remove global variable TICE (not needed)
800      - replace by TICES or local variable where necessary (cost_seaice_test,
801        seaice_diagnostics_state)
802      - move copying TICE to TICES from seaice_check_pickup to seaice_read_pickup
803      - use specific read/write routines for reading and writing individual leves
804        of a multilevel field
805    o pkg/ctrl & model/inc:
806      - move additional anomaly fields of control vars (related to options:
807         ALLOW_KAPGM_CONTROL, ALLOW_KAPREDI_CONTROL and ALLOW_BOTTOMDRAG_CONTROL)
808        from DYNVARS.h into new header file: CTRL_FIELDS.h
809    o pkg/seaice: some small modifications to the ridging code
810      - make fw2ObyRidge a global variable and add the freshwater flux to
811        seaice_growth
812      - pass actual thickness from seaice_prepare_ridging, so that it is
813        computed only in one place and compute it in the same way as in
814        seaice_growth
815      - initialise more fields in seaice_do_ridging that where cause floating
816        point exceptions over land
817    o pkg/seaice: preparations for ridging code and first real ridging code
818      - move most of "PART 1" of S/R seaice_growth into a new and separate
819        S/R seaice_reg_ridge that will both regularize the state variable after
820        advection call the actual ridging routine;
821      - requires to make 5 fields global fields: d_HEFFbyNEG,d_HSNWbyNEG,
822        d_AREAbyRLX,d_HEFFbyRLX,saltFluxAdjust;
823      - remove ridging code from seaice_advdiff
824      - clean up remaining part 1 of seaice_growth in an attempt to make it
825        more readable (this is probably subjective)
826      - call seaice_itd_redist once in the initialisation phase to have the initial
827        conditions in the correct category
828      - finally: add new ridging routine for ITD code
829    
830    checkpoint64v (2014/04/11)
831    o pkg/ecco:
832      - add runtime parameters mdt[start,end]date[1,2]
833      - rename variable "tpmean" as "mdt" and "topexmeanfile" as "mdtdatfile"
834    o pkg/seaice:
835      - make deltaC a global variable, so that it can be used in ridging code
836      - first step towards ridging: introduce new routines that compute
837        ice strength based on ridging parameters
838      - add diagnostic for HSNOWITD
839      - add opnWtrFrac as a global variable (required for ridging scheme)
840    o pkg/salt_plume + pkg/seaice/seaice_growth.F
841      - add SALT_PLUME_IN_LEADS flag to activate pkg/salt_plume only when ice
842        AREA exceeds a threshold (code contributed by I.Fenty in 2011)
843    o verification/hs94.1x64x5:
844      - leave ALLOW_AUTODIFF_TAMC undefined in code_oad/AUTODIFF_OPTIONS.h
845      - do not use ECCO_CPPOPTIONS.h anymore for TAF & OpenAD Adjoint tests.
846    o autodiff:
847      - Start to include explicitly AUTODIFF_OPTIONS.h, COST_OPTIONS.h,
848        and CTRL_OPTIONS.h in src files (to enable to skip the ECCO_CPPOPTIONS.h)
849        For now, only in pkgs used in verification/hs94.1x64x5.
850      - Replace ALLOW_AUTODIFF_TAMC by ALLOW_AUTODIFF (except for tape/storage
851        which are specific to TAF/TAMC).
852      - Replace ALLOW_AUTODIFF_OPENAD by ALLOW_OPENAD:
853        since ALLOW_OPENAD is defined in PACKAGES_CONFIG.h (any time pkg/openad
854        is compiled), this simplifies/reduces which *_OPTIONS.h file to include.
855      - OpenAD: change Makefile to generate the appropriate AD_CONFIG.h when
856        building mitgcmuv_ad (make adAll).
857    o pkg/ecco:
858      - cost_gencost_seaicev4.F:
859         reformulate proxy cost as function of sst and local param SEAICE_freeze
860         change cost names from siv4-[sst,vol] to siv4-[deconc,exconc]
861      - add stop statement if old names siv4-[sst,vol] are used
862      - add snapshots + cost reports for atmospheric longwave
863      - remove factor 0.1 in front of wtau[u,v]
864      - replace never used flag ALLOW_TMI_COST_CONTRIBUTION with
865         ALLOW_TMI_SST_COST_CONTRIBUTION
866    o pkg/atm_phys:
867      - add some diagnostics for Short-wave and for convection S/R.
868    o pkg/seaice/seaice_growth:
869      - fix a bug in the lateral melt parameterization for SEAICE_ITD
870        in seaice_growth; tempFrz needs to be computed inside the i/j-loop
871      - rearrange loop order for better vector code in the same code block
872      - rewrite the floeDiameter formula to have fewer divisions
873      -  (miraculously) none of this changes the results of seaice_itd
874    o pkg/smooth:
875      - move param smooth2Ddiffnbt to pkg/ecco
876    o pkg/salt_plume:
877      - salt_plume_frac.F:
878         clean up local param names
879         reformulate (1-frac) to frac; original 1-frac was based on swfrac code
880    o pkg/rw:
881      - add RS version of S/R READ_MFLDS_LEV.
882    o pkg/streamice:
883      - fix the restart test by writing/reading pickup_streamice files.
884    o pkg/seaice:
885      - refine checks for jfnk-related parameters
886      - comment out if statement with SEAICEuseIMEX parameter as long as there
887        is no IMEX code to avoid confusion and surprises
888    
889    checkpoint64u (2014/03/07)
890    o verification/MLAdjust:
891      - rename secondary test suffix:
892         1.leith  -> A4FlxF  + switch to flux-form & add side-drag
893         0.leithD -> AhFlxF  + switch to flux-form
894         0.smag   -> AhVrDv  (use Vorticity-Div. visc form) + add side-drag
895         0.leith  -> AhStTn  (use Strain-Tension visc form) + add side-drag
896    o pkg/mom_vecinv:
897      - remove unused arguments from S/R MOM_VI_HDISSIP & MOM_HDISSIP (as it used
898        to be before mom_calc_visc.F)
899      - skip the call to MOM_CALC_TENSION & MOM_CALC_STRAIN if not needed.
900      - add 2nd copy of vort3 & strain that knows about lateral BC (free/no slip):
901        this is simpler for the adjoint and for diagnostics.
902    o model/src + pkg/momentum:
903      - add input files for  2-D additional Western and Southern cell-edge wall
904         (e.g., to add "thin-wall" where it is =1).
905      - fix sideDrag option for thin-walls with Non-Lin Free-Surf
906        using 2nd hFacZ that is computed from initial (fix domain) hFac
907      - known limitations of thin wall implementation: not yet coded for sigma
908        coords; not working with CD-scheme neither.
909    o pkg/seaice:
910      - rename recently introduced parameters from (wrong name) AB to
911        BDF (backward difference time discretisation)
912      - retire runtime parameters SEAICEuseAB2, SEAICE_abEps
913    o tools/adjoint_options:
914      - remove setting of "OPENAD=true" (now set by command line "genmake2 -oad")
915    
916    checkpoint64t (2014/02/01)
917    o pkg/ecco
918      - add compile flag ALLOW_GENCOST_TIMEVARY_WEIGHT in ECCO_OPTIONS.h and
919        runtime logical flag gencost_timevaryweight to read daily sea-ice sigma
920      - replace hard-coded record number and period which only work for monthly
921        with read-in runtime param that works for other periods (month,day,year)
922    o pkg/thsice
923      - corrected store directive fixes thsice adjoint gradient checks
924    o genmake2 & testreport:
925      - add genmake2 option "-oad" to generate a Makefile for OpenAD built and
926        in this case, use tools/adjoint_options/adjoint_oad as default AD optfile.
927        Update testreport accordingly. No need to set "export OPENAD=true"
928        in adjoint_options/adjoint_oad anymore (will be removed later).
929    o pkg/shelfice:
930      - put T & S shelfice forcing into model surfaceForcing_T,_S (for now,
931        only if SHELFICEboundaryLayer=F); Change model/src/external_forcing.F
932        so that surface forcing applies to k=kSurf if using pkg/shelfice.
933    o pkg/ctrl, pkg/grdchk, pkg/ecco:
934      - Changes to make GENARR more modular (i.e. invisible if not used)
935    o model/src/temp_integrate.F and salt_integrate.F
936      - re-include store directives that were removed on Dec 27th.
937    o model/src/external_forcing_surf.F
938      - add storage directives for EmPmR and PmEpR to avoid recomputation of
939        seaice_model in the adjoint that is problematic when seaice_model is
940        turned off in the adjoint. The resolved issue dated back to July when
941        EXTERNAL_FORCING_SURF call was moved.
942        Update global_ocean.cs32x15/*/output_adm.seaice_dynmix.txt accordingly.
943    o pkg/exf/exf_check.F
944      - fix a small bug again (originally found by Wentao Liu, now found again)
945      - streamline error output
946    o pkg/streamice and aim_v23:
947      - replace a few "_EXCH_XY_RL (" with "_EXCH_XY_RL(", so that
948        Apple's /usr/bin/cpp knows what to do:
949        Apple LLVM version 5.0 (clang-500.2.79) (based on LLVM 3.3svn)
950        Target: x86_64-apple-darwin13.0.0
951    
952    checkpoint64s (2014/01/05)
953    o tools/adjoint_options:
954      - switch to fastopt.net TAF server (instead of default fastopt.de) for
955        AD optfiles adjoint_diva & adjoint_f95 (similar to adjoint_default).
956    o model/src:
957      - remove some unnecessary TAF storage directives in forward_step.F and
958        in dynamics.F (note: not always removed by TAF, e.g., double storage
959        of kappaRU,kappaRV in former version of dynamics.F).
960    o model/src & pkg/ptracers:
961      - call directly GAD_IMPLICIT_R & IMPLDIFF + DWNSLP_APPLY from temp_integrate.F
962        salt_integrate.F and ptracers_integrate.F (instead of from thermodynamics.F)
963        and remove ptracers_dwnslp_apply.F & ptracers_implicit.F
964      - call MATRIX_STORE_TENDENCY_EXP for each tracer (in ptracers_integrate.F)
965      - add fZon & fMer as output argument of S/R GAD_CALC_RHS.
966      - update TAF AD-output of experiments global_ocean.90x40x15 (13 for AD-grad).
967    o useSingleCpuInput separates single-CPU input from single-CPU output;
968        for now only implemented for in exf_interp_read.F
969    o verification/advect_xy:
970      - fix missing EXCH call in local version of ini_salt.F and update output.
971    o momentum diagnostics:
972      - fix which deltaT is used in Total-Tendency diagnostics.
973      - fix typo in diagnostics for momentum tendency from AB.
974    o pkg/seaice/seaice_lsr.F: fix an initialisation bug for the
975        SEAICE_VECTORIZE_LSR_ZEBRA option that lead to NaNs on a NEC-SX8
976    
977    checkpoint64r (2013/12/08)
978    o verification/*/results:
979      - Update reference output of experiments that were passing with just 13 digits
980         (make it easier to detect future changes in results)
981    o model/src & pkg/ptracers:
982      - move calls to GAD_ADVECTION (Multi-Dim advection) from thermodynamics.F to
983        inside temp_integrate.F and salt_integrate.F and from ptracers_advection.F
984        to inside ptracers_integrate.F ; remove ptracers_advection.F
985    o coupling interface pkgs:
986        [atm_compon_interf, ocn_compon_interf & atm_ocn_coupler]
987      - change the config check to test the agreement of Ocean Depth
988        with ATM land/sea mask (instead of ATM orography);
989      - send to coupler the number of coupler time-steps to do for this run:
990        this allows to check for consistency and don't need anymore to be
991        specified in parameter file "data";
992      in coupler:
993      - check consistency of RunOff map versus Ocean Depth and ATM land/sea mask.
994      - improve report to log-file of config setting (pass log-file unit to few S/R)
995    o pkg/compon_communic:
996      - add coupling send/receive for non-tiled integer vector;
997      - add S/R to check and stop if any proc has an error (similar to
998        eesupp/src/stop_if_error.F but single thread and across Comm_World).
999    o pkg/exch2:
1000      - in exch2*_get_rx[1,2]: use new list "W2_tileIndex" to replace search
1001        through list of all tiles my proc owns.
1002    o model/src:
1003      - AUTODIFF only: in calc_adv_flow.F, recompute rTransKp (instead of copying
1004        from rTrans) to simplify dependencies (no need to store rTrans anymore in
1005        calling S/R); this affects AD results at machine truncation level:
1006        update AD-output (TAF) of experiments: 1D_ocean_ice_column,
1007        bottom_ctrl_5x5 & obcs_ctrl (12 digits for AD grad, same FWD grad).
1008    o tools/build_options:
1009      - simplify Warnings options (-ieee & -devel cases) in linux_amd64_gfortran
1010    o coupling interface pkgs:
1011        [compon_communic, atm_compon_interf & ocn_compon_interf]
1012      - move declaration of local array "ibuf" out of header file "CPLR_SIG.h"
1013        to each S/R that needs it; remove un-used variables.
1014      - change component tile registration (cpl_register.F in both compon_interf
1015        and mitcomponent_tile_register.F) to pass the full list of tiles
1016        information (including bi,bj) in 1 vector (instead of in a bi,bj matrix).
1017      - with pkg/exch2: adopt the same convention used for I/O to define mapping
1018        towards coupler global array (unless W2_useE2ioLayOut=F):
1019         a) can now use different tiling between atm & ocn comp.
1020         b) no needs to modify the run-Off map when changing tiling (was needed
1021            even if using the same tiling between atm & ocn).
1022         c) will allow to run with blank-tiles in 1 component (e.g., for ocean
1023            full land tiles); not yet tested.
1024      - check for valid mapping from comp. tile to coupler global array
1025      - improve report of tile registration results to log file.
1026    o pkg/exch2:
1027      - in eesupp/src/eeboot.F: move call to W2_EEBOOT before Coupler
1028        tile-registration (CPL_REGISTER);
1029      - activate (un-comment) definition and setting of "W2_tileIndex" list to
1030        store the local bi,bj indices of each tile;
1031      - also print bi,bj in local report to log file;
1032      - fix pkg/debug/debug_cs_corner_uv.F for the case nSy > 1 (left from
1033        Jun 2009 modif of pkg/exch2).
1034    o testing on baudelaire:
1035      - run 2 tests at a time: no significant slow down (since enough cpu) and
1036        get the full set of test done earlier
1037      - switch the ifort test to "-devel" ; run the OpenAD test everyday.
1038    o model/src/thermodynamics.F and routines called from it:
1039      - pkg/gmredi: gmredi_residual_flow.F (replacing gmredi_calc_uvflow.F &
1040        gmredi_calc_wflow.F) to update eulerian velocity (input) into residual
1041        velocity (outp) by adding bolus velocity.
1042      - model/src: calc_adv_flow.F (replacing calc_common_factors.F) to compute
1043        mass transport from velocity + lateral grid cell area
1044      - rename calc_gt.F to temp_integrate.F (includes call to TIMESTEP_TRACER)
1045      - rename calc_gs.F to salt_integrate.F (includes call to TIMESTEP_TRACER)
1046     in thermodynamics.F
1047      - remove k from thermodynamics.F and move it to temp_integrate.F
1048        salt_integrate.F and ptracers_integrate.F (now done inside the tracer
1049        loop).
1050      - compute locally (in thermodynamics.F) 3-D velocity field that is used to
1051        advect tracers; pass it as argument to GAD_ADVECTION, GAD_SOM_ADVECT,
1052        PTRACERS_ADVECTION, TEMP_INTEGRATE, SALT_INTEGRATE, PTRACERS_INTEGRATE,
1053        GAD_IMPLICIT_R and PTRACERS_IMPLICIT
1054      - update AD-output (TAF & OAD) of experiments: 1D_ocean_ice_column,
1055        global_ocean.90x40x15, tutorial_global_oce_biogeo and
1056        tutorial_tracer_adjsens (+ TLM output).
1057    o tools/OAD_support and (verification/*/) code_oad:
1058      - OAD_support/cb2mGetModules.csh: add PACKAGES_CONFIG.h in header file to
1059        module conversion ; remove unneeded CPP_EEOPTIONS.h.
1060      - code_oad/CPP_OPTIONS.h: remove PACKAGES_CONFIG.h and use a more standard
1061        version (closer to model/inc/CPP_OPTIONS.h).
1062    o model/src:
1063      - remove parameter "useOldFreezing" from PARAMS.h and push it to the
1064        retired list of parameters (routine FREEZE has been replace by surface
1065        freezing (10.yrs ago) and by pkg/frazil (interior freezing).
1066    o pkg/gmredi:
1067      - add option (GM_CALC_TRANSP_FROM_VEL) to compute transport directly from
1068        velocity (same scheme but affects machine truncation) for GM_AdvForm.
1069      - update output of FWD experiments: front_relax.bvp,
1070        global_ocean.90x40x15.dwnslp, global_ocean.cs32x15 and ideal_2D_oce.
1071    
1072    checkpoint64q (2013/11/17)
1073    o verification:
1074      - generate new output on baudelaire (gfortran, -ieee) for OpenAD experiments
1075        tutorial_global_oce_biogeo and global_ocean.90x40x15.
1076      - generate new output (growth & melt) for seaice_itd experiment after
1077        updating the input pickup_seaice files (previously wrong).
1078    o pkg/cost:
1079      - define a "final cost function" for each tile, and use GLOBAL_SUM_TILE_RL
1080        (instead of _GLOBAL_SUM_RL) to get the final cost from all procs & threads:
1081        o this fixes global-sum value if multi-threads (since GLOBAL_SUM_RL
1082          cannot be applied to var in common block).
1083        o allows to get results independent of tile-per-proc setting (if using
1084          slower GLOBAL_SUM_SEND_RECV option).
1085      - update accordingly: seaice_cost_final.F, shelfice_cost_final.F,
1086        thsice_cost_final.F and ecco_cost_final.F (this one affects lab_sea
1087        forward gradients: update output).
1088      - update */code_oad/externalDummies.F by adding dummy GLOBAL_SUM_TILE_RL
1089        S/R and, for most exp., also comment out GLOBAL_SUM_R8.
1090    o pkg/mom_common:
1091      - move to pkg/mom_common and model/src (previously in tutorial_deep_convection
1092        code) 2nd version of isotropic 3-D Smagorinsky code interface: strain and
1093        viscosity are locally declared in dynmics.F and pass as argument to CALC_GW;
1094        ensure that all field value that are used are set.
1095    o tutorial_deep_convection (smag3d):
1096      - add missing scaling in mom_calc_smag_3d.F;
1097      - set smag3D_coeff in input.smag3d such that results do not change.
1098    o pkg/dic:
1099      - change dic_cost.F to compute cost on each tile first and then apply
1100        GLOBAL_SUM_TILE_RL: this affects forward gradient of AD experiments
1101        tutorial_dic_adjoffline & tutorial_global_oce_biogeo; update output.
1102      - remove kLev argument and use GLOBAL_SUM_TILE_RL in tracer_meanarea.
1103    o eesupp/src & pkg/mdsio:
1104      - remove gather/scatter_vector.F (from eesupp) and mdsio_read/writevector.F
1105        (from pkg/mdsio) since they are no longer used for tape IO.
1106      - move simple C subroutine "setdir.c" from pkg/compon_communic to eesupp/src
1107        (+ keep a copy in pkg/atm_ocn_coupler).
1108    o verification/isomip:
1109      - split domain in 8 squared tiles (instead of just 2) for FWD, AD & OAD tests.
1110    o tools/build_options:
1111      - optfile linux_amd64_ifort11, fast (no ieee) case:
1112        to get a working restart for all experiments, add "-fp-model source"
1113        to FOPTIM (also remove "-opt-streaming-stores auto" <- this is the default).
1114    
1115    checkpoint64p (2013/10/20)
1116    o pkg/autodiff:
1117      - adread_adwrite.F: when type and length do not match ALLOW_AUTODIFF_WHTAPEIO
1118        criteria, return to simple (default) tape IO format.
1119    o pkg/mdsio (+ eesupp/src):
1120      - rewrite/simplify tape-IO S/R (new S/R MDS_READ/WRITE_TAPE replace
1121        previous MDSREAD/WRITEVECTOR) with 2 array argument from each type (R4/R8);
1122      - fix globalFile and singleCpuIO options using simpler global mapping.
1123      - new pairs of scatter/gather vector S/R (one for each type, generated from
1124        template) corresponding to simpler global mapping.
1125      - adread_write.F: switch to new S/R (but leave old calls commented) and write
1126        to globalFile when parameter globalFiles is set to True.
1127      - switch on useSingleCpuIO in AD experiments: global_ocean.90x40x15 & isomip.
1128    o pkg/autodiff:
1129      - adread_adwrite.F: add a hack for RS arrays (when RS=real*4);
1130        with ALLOW_AUTODIFF_WHTAPEIO defined, since corresponding (real*4) is
1131        missing, just add a STOP if array type do not match.
1132    o pkg/exf:
1133      - to allow to use seaice-fraction from pkg/exf in other pkgs than pkg/seaice:
1134         rename CPP option EXF_ALLOW_SEAICE_RELAX to EXF_SEAICE_FRACTION
1135         and rename array obsSIce to exf_iceFraction.
1136    o tutorial_deep_convection:
1137      - add 1rst version of isotropic 3-D Smagorinsky code (from Louis-Philippe),
1138        for now all in this exp. code dir.
1139      - add secondary test using Smag-3D viscosity (keep very low backgroud visc for
1140        testing) and flux-limter advection scheme for Temp. (no explicit diffusion).
1141    o eesupp/src:
1142      - added SINGLE_DISK_IO option because reading of parameter files on
1143        very large number of processors did not work with existing set-up
1144    
1145    checkpoint64o (2013/09/25)
1146    o pkg/atm_phys & atm_compon_interf:
1147      - allows for coupling of gray-atmosphere (atm_phys) with ocean.
1148    o tools/build_options:
1149      - switch from "-fPIC" to "-mcmodel=medium" in optfiles: linux_amd64_gfortran
1150        & linux_amd64_ifort11 and in linux_amd64_g77 & linux_amd64_open64 also
1151        remove CPP setting (was identical to genmake2 default).
1152    o pkg/gmredi & model/src: Some updating and work done on the residual model.
1153      - created new file model/src/calc_eddy_stress.F to calculate the eddy stress.
1154      - fixed up the calculation of the eddy stress and how it is added to the
1155        external forcing via taueddy_external_forcing.F
1156      - at the moment, it is very experimental and only works with the variable eddy
1157        diffusivity calculated in gmredi_k3d.F
1158    o pkg/seaice/seaice_check.F: add a check to catch the case of specifying
1159        lw/swfluxfile instead of lw/swdownfile in data.exf together with pkg/seaice
1160    o testreport (& tools/do_tst_2+2):
1161      - for MPI test, set default COMMAND to 'mpirun -v -np TR_NPROC ./{executable}'
1162    o tools/build_options: linux_amd64_gfortran & linux_amd64_ifort11:
1163      - remove CPP='cpp -traditional -P' (this is genmake2 default)
1164      - add switch (for big setups) to use 'medium' memory-model (but leave it
1165        commented out for now). Note: needed with FC 19 to compile big setups.
1166    o pkg/atm_compon_interf:
1167      - regroup per field origin (model & pkgs) the coupling storage routines
1168         (which accumalate in time each coupling field)
1169      - move bi,bj loops inside atm_store_my_data.F and store also wind-stress;
1170        update accordingly + simplify aim_do_physics.F
1171    
1172    checkpoint64n (2013/08/26)
1173    o pkg/bbl:
1174      - update formulation to reduce dispersion of tracer properties in bbl
1175      - replaced horizontal and vertical transport parameters with velocities
1176      - changes results for verification/global_with_exf.yearly
1177    o verification/halfpipe_streamice:
1178      - change to matrix construction; update both Fwd & AD output.
1179    o verification/tutorial_tracer_adjsens:
1180      - OpenAD test: switch to vector-invariant momentum since fluxform with
1181        rStar causes problems with OpenAD; update output.
1182    o tools:
1183      - genmake2: define a common prefix for all temp-file names ; move them
1184        to local /tmp disk (but would be easy to move them back);
1185      - xmakedepend: apply the same switch for temp-files.
1186    o pkg/offline:
1187      - changes for use with rStar (NLFS): assume that we continue to provide
1188        UVELMASS/hFacW_ini & VVELMASS/hFacS_ini (hFacWi,S_ini as written in grid
1189        output files) and apply r* scaling at each time-step (function of the time
1190        varying Eta field); use normal pickup files (needed for restart with NLFS).
1191    o adjoint with OpenAD:
1192      - move OpenAD-specific files from verification/OpenAD/code_oad_all to a new
1193        package openad.  This package has to be compiled for all runs with OpenAD
1194        instead of specifying code_oad_all as a modification directory.
1195      - link the fortran templates from tools/OAD_support to the build directory
1196        for preprocessing to avoid conflicts between different setups compiled
1197        simultaneously and simplify cleanup.
1198    o pkg/exf:
1199      - in exf_getforcing.F: comment out most of the EXCH calls (fields used by
1200        main model or other pkgs are exchanged in EXF_MAPFIELDS).
1201    o model/src:
1202      - do_stagger_fields_exchanges.F: skip EXCH calls when using pkg/offline
1203        (similar to do_fields_blocking_exchanges.F).
1204    o tools/genmake2:
1205      - remove TAF output src code just before calling staf (when not doing a fresh
1206        built, will stop if things go wrong with staf).
1207      - fix target "adobj" (left from TAF version-2 transition)
1208    o pkg/diagnostics:
1209      - add a parameter to track the status of pkg/diagnostics activation;
1210        this replace/extend the use of logical param "settingDiags" (to check
1211        when adding diag to the list) to also check any DIAGNOSTICS_[]FILL* call.
1212        New S/R to print error message and stop when pkgStatus is not right.
1213      - to try: add a warning when "data.diagnostics" exist but useDiagnostics=F.
1214    
1215    checkpoint64m (2013/08/13)
1216    o model/inc:
1217      - move FCORI_MACROS.h from PARAMS(_MACROS).h to GRID_MACROS.h (left from
1218        8 yrs ago modif when Coriolis arrays were moved from PARAMS.h to GRID.h)
1219    o pkg/kpp & aim_v23:
1220      - only call DIAGNOSTICS_FILL when useDiagnostics=TRUE.
1221    o pkg/seaice:
1222      - restore (last time on 2011/12/24) ability to compile pkg/seaice with
1223        undefined pkg/exf ALLOW_ATM_TEMP or ALLOW_RUNOFF CPP-options.
1224      - only call DIAGNOSTICS_FILL when useDiagnostics=TRUE.
1225    o eesupp/src:
1226      - fix check for overlap-size argument (myOLn.GT.MAX_OLY_EXCH)
1227        in exch1_rx[_ad].template (thanks to Francois Lefeuvre report).
1228    o switch to TAF version-2:
1229      - add flow directives to "freeze" naming convention for ad-routines that
1230        are used in I/O routines of adjoint state and associated common blocks
1231        that are used in adcommon.h (backward compatible with version-1)
1232      - update all ad-optfiles (in tools/adjoint_options + few local to some
1233        verification exp) to switch to latest TAF version (currently 2.5.5);
1234        merge "*_mpi" adoptfiles into the corresponding non-mpi (but commented
1235        out except for diva).
1236      - the major change with TAF version-2 is that both the differentiated
1237        routines and the forward routines (new) are returned as part of the TAF
1238        output source code. Update genmake2 accordingly.
1239      - new output for AD experiment tutorial_global_oce_biogeo (better AD gradient
1240        with version-2 when compared to TLM or FWD gradient); other experiments
1241        output show minor changes (machine truncation level); update the few AD &
1242        TLM output with 12 matching digits only (some prior to version-2 switch).
1243    
1244    checkpoint64l (2013/08/05)
1245    o model/src:
1246      - in dynamics.F, skip the call to CALC_VISCOSITY if momViscosity=F
1247      - main_do_loop.F: no longer includes additional (AUTODIFF) header files
1248        when using TAF but only if using OpenAD.
1249    o pkg/mom_common+fluxform+vecinv:
1250      - always set horiz. viscosity arrays to background value before calling
1251        MOM_CALC_VISC (in MOM_FLUXFORM & MOM_VECINV) and call S/R MOM_CALC_VISC
1252        only when using variable horiz. viscosity (useVariableVisc=T);
1253      - simplify mom_vecinv.F (only 1 block for momViscosity).
1254    o pkg/mom_common: variable horiz. viscosity in NH code
1255      - move horiz-viscosity 3-D arrays viscAh_W & viscA4_W (used in calc_gw.F)
1256        from model/inc/NH_VARS.h to pkg/mom_common/MOM_VISC.h
1257      - store in common block (in MOM_VISC.h) logical parameters: useHarmonicVisc,
1258        useBiharmonicVisc & useVariableVisc.
1259      - fix old bug (already in 1rst implementation of variable horizontal viscosity
1260        in calc_gw.F, version 1.27, 2006/06/20):
1261        horizontal bi-harmonic viscosity in gW was missing when wiscA4W=0
1262        even if variable bi-harmonic viscosity (e.g., viscA4Grid) was non-zero.
1263      - change background horiz viscosity in vertical momentum (gW) to always be
1264        viscAhW,viscA4W (instead of switching to viscAhD, viscA4D when using
1265        any type of variable viscosity, e.g., viscAh/4Grid)
1266      - change default value of viscAhW,viscA4W to viscAhD,viscA4D (instead of
1267        viscAh,viscA4) which default to viscAh,viscA4 :  this avoid missing
1268        horiz. viscosity in W eq when just setting viscAhD/Z,viscA4D/Z (since
1269        default viscAh,viscA4 is zero).
1270    o model/src:
1271      - extend length of drC & recip_drC from Nr to Nr+1.
1272    o Divided Adjoint (DIVA) with MPI:
1273      - genmake2: do not create local ./mpi_headers dir when no file to copy into.
1274      - remove option ALLOW_DIVIDED_ADJOINT_MPI (replaced by ALLOW_DIVIDED_ADJOINT
1275        and ALLOW_USE_MPI) from model/src code and from ECCO_CPPOPTIONS.h.
1276    
1277    checkpoint64k (2013/07/23)
1278    o tools/OAD_support:
1279      - avoid the need for file "oadtempflile" in insertTemplateDir.bash
1280        and remove it from genmake2.
1281    o tools/build_options:
1282      - remove MPI_HEADER_FILES_INC setting (no longer used) and comment out
1283        MPI_HEADER_FILES list (let genmake2 find the missing headers)
1284    o verification/halfpipe_streamice:
1285      - change to driving stress formulation; update both Fwd & AD output.
1286    o tools/genmake2 and Divided Adjoint with MPI:
1287      - remove default setting of MPIINCLUDEDIR from $MPIHOME (always been broken);
1288      - only create local ./mpi_headers dir if using MPI and MPIINCLUDEDIR is set;
1289      - add new variable (LOCAL_MPI_HEADERS, replace MPI_HEADER_FILES_INC) in
1290        Makefile, which is set by genmake2, and check which mpi-headers are needed.
1291        Note: need to update adjoint_options/adjoint_diva_mpi accordingly.
1292      - update target "CLEAN" (to also remove ./mpi_headers/ dir).
1293    o testreport:
1294      - changes for Divided Adjoint Run: when file "run_ADM_DIVA" is present,
1295        perform additional runs (number of additional runs is "add_DIVA_runs" taken
1296        from file run_ADM_DIVA ; should match "nchklev_3" in file "code_ad/tamc.h").
1297    o verification/lab_sea (AD test):
1298      - change to test Divided Adjoint Run in this set-up (both standard AD test
1299        and 2 secondary AD test: noseaice + noseaicedyn); drop the evp AD test.
1300    o pkg atm_ & ocn_compon_interf:
1301      - remove cpl_earlyExpImpCall=F option (was mainly a hack added for the old
1302        staggerTimeStep implementation) and disable (retired) corresponding
1303        parameter.
1304    o pkg/offline:
1305      - comment out unused field-array: ICEM, ConvectCount, hflx[01], icem[01];
1306      - add S/R OFFLINE_CHECK to print offline parameter summary
1307        and stop if loading a file that is not used;
1308      - enable to calculate GMRedi tensor, KPP mixing and convective index
1309        when the corresponding file(s) is/are not specified (but pkg is used).
1310      - comment out resetting of monitorFreq (to endTime) since it still useful
1311        for monitoring CFL numbers and checking offline fields.
1312    o OpenAD:
1313      - do not define OAD_DEBUG (in tools/adjoint_options/adjoint_oad) to get
1314        smaller standard output) and generate new (smaller) output (on baudelaire
1315        using gfortran with -ieee) for exp. tutorial_tracer_adjsens
1316    o model/src:
1317      - call EXTERNAL_FORCING_SURF outside bi,bj loops (in do_oceanic_phys.F),
1318        (where external_forcing_adjust was called) and change list of arguments;
1319      - merge external_forcing_adjust.F into external_forcing_surf.F
1320      - put surface relaxation of SST & SSS in new S/R (forcing_surf_relax.F)
1321        which also contains balancing surface relaxation (ALLOW_BALANCE_RELAX,
1322        previously in file "balance_relax.F", now removed); remove corresponding
1323        arrays in FFIELDS.h.
1324      - EXTERNAL_FORCING_SURF is now called when using pkg/offline; implement
1325        a hack for getting back surfaceForcingS (loaded from file) when using
1326        ALLOW_OLD_VIRTUALFLUX (pkg/dic, in DIC_OPTIONS.h) in offline set-up.
1327      - update output of AD test experiment global_ocean.cs32x15.seaice_dynmix
1328        (was getting only 11 digits for AD-grad, due to different truncation
1329         error in AD code).
1330    
1331    checkpoint64j (2013/07/04)
1332    o pkg/offline:
1333      - to enable the use of other features with pkg offline (e.g., obcs),
1334        also call S/R DO_OCEANIC_PHYS in offline run - more modifs to come.
1335      - comment out "allowFreezing" (now active) in 2 offline testing exp.
1336    o pkg/exf ALLOW_RUNOFTEMP
1337      - fix sign and make compatible with temp_EvPrRn .NE. UNSET_RL
1338      - ahdded RUNOFTEMP test to verification/global_ocean.cs32x15/input.seaice
1339      - changes verification/global_ocean.cs32x15/results/output.seaice.txt
1340    o pkg/atm_phys:
1341      - allows to add some damping on uVel,vVel (strength only function of k).
1342    o verification, ad-tests:
1343      - reduce length of the simulation for AD test: global_ocean.cs32x15.seaice,
1344        global_ocean_ebm and offline_exf_seaice.thsice.
1345    o verification/halfpipe_streamice:
1346      - found a bug in s/r pkg/streamice/streamice_advect_thickness which caused
1347        flux input boundary conditions to be ignored; a fix for this bug changed
1348        verification results for forward test.
1349      - add adjoint test.
1350    o pkg/ptracers:
1351      - allow to restart without SOM pickup (resetting SOM to zero).
1352    o pkg/gmredi:
1353      - New parameterisation for the calculation of K and (GM_PsiX,GM_PsiY) added.
1354      - It uses mixing length theory and suppression by steering level effects to
1355        calculate a diffusivity used in the Redi tensor (see Bates et al., submitted
1356        to JPO, for more details).
1357      - It also uses the diffusivity to calculate an eddy induced streamfunction
1358        based on a PV closure (rather than a buoyancy closure as in GM).
1359      - New files added to pkg/gmredi:
1360        gmredi_k3d.F calculates the diffusivity for the Redi tensor and the eddy
1361          induced overturning streamfunction (called from gmredi_calc_tensor)
1362        gmredi_calc_eigs.F calculates the eigenvalues and eigenvectors required
1363          for use in gmredi_k3d
1364        gmredi_calc_urms.F calculates the the rms eddy velocity used to calculate
1365          the eddy diffusivity
1366    
1367    checkpoint64i (2013/06/18)
1368    o pkg/cheapaml:
1369      - take src files from MITgcm_contrib/verification_other/offline_cheapaml/code
1370        that enable the use of seaice (pkg/thsice thermo & pkg/seaice dynamics)
1371        with pkg/cheapaml.
1372    o utils/python: add subpackage for cubed sphere function, first example is
1373        simple cs.pcol to plot 2D fields on a map
1374    o pkg/streamice:
1375      - This is a new package in MITgcm, which solves dynamic equations for ice
1376         sheets and ice streams
1377      - At the moment it is independent of atmosphere/ocean dynamics, or any
1378        other physical packages in MITgcm, even ShelfIce (although it is anticipat-
1379        ed that this will change)
1380      - There is a new verification exercise that tests it, halfpipe_streamice,
1381        evolves a 40x80 km ice stream/ice shelf (at coarse resolution) in a
1382        rectangular embayment
1383      - halfpipe_streamice is forward-only for now, will have TAF test soon
1384      - for questions, email dgoldber@mit.edu
1385    o pkg/thsice:
1386      - fix filling of snow-precip diagnostic (SIsnwPrc) (left from the removing
1387        of snowPrc from common bloc, on May 2nd, thsice_step_fwd.F revision 1.40);
1388      - remove diagnostics 'SI_FrcFx' ( now identical to 'SI_Fract' with new
1389         call sequence: ice-Thermo(thsice),ice-Dyn,ice-Advect );
1390      - allow precip from pkg/cheapaml to make snow over seaice.
1391    o pkg/cfc:
1392      - move in separated header file (CFC_ATMOS.h) time-serie arrays of Atmos CFC
1393      - remove atmos CFC 2-D arrays from common bloc (now local variables)
1394      - change some hard-coded constant to run time parameter for reading and
1395        and interpolating atmospheric CFC ; keep same default as previously.
1396      - more flexible reading of Atmos CFC (number of records no longer hard-coded)
1397      - put arguments in standard order: myTime, myIter, myThid
1398      - use standard S/R GET_PERIODIC_INTERVAL for time interpolation of
1399        atmospheric CFC ; fix for the case myIter < PTRACERS_iter0.
1400      - fix calculation of surf tendencys for partial-cell and/or Non-Lin Free-Surf
1401      - new routine to print summary of CFC params and check for consistency.
1402    o pkg/seaice: add uice/vice to the parameter list of s/r seaice_advdiff,
1403      similar to thsice_advdiff.
1404      Note that for the B-grid case the routine parameters uc/vc are overwritten.
1405    o pkg/cfc:
1406      - change time interpolation for atmospheric CFC-11 (now same as for CFC-12);
1407        update output (CFC-11) of experiment cfc_example and tutorial_cfc_offline.
1408      - fix interpolation of atmphspheric CFC between Sorthern and Northern
1409        hemisphere value.
1410    o pkg/seaice:
1411      - allow to use seaice dynamics without pkg/exf (e.g., using pkg/cheapaml)
1412    o pkg/seaice: add Adams-Bashforth2 time discretization for ice dynamics;
1413                  so far only for JFNK-solver, turn on with SEAICEuseAB2 = .TRUE.
1414      - requires an additional time level that is stored in the pickup
1415      - you can start with AB2 from a pickup without this time level with
1416        pickupStrictlyMatch = .false.
1417    
1418    checkpoint64h (2013/05/26)
1419    o pkg/cheapaml:
1420      - replace one ()**.5 with SQRT + use temp var "cdu = tau/Du" (coare3_flux);
1421        affect machine truncation (but exp cheapAML_box still pass with 13 digits).
1422      - consistent treatment of uWind,vWind location: assume everywhere in
1423        pkg/cheapaml that they are on C-grid (@ uVel,vVel location)
1424        (Note: was already the case for Tair,Qair advection);
1425        add option (INCONSISTENT_WIND_LOCATION) to recover old results.
1426      - compute diabatic forcing only in the interior (excluding overlap regions)
1427      - fill in array "Qsw" (for short-wave heating);
1428      - add diagnostic for precip ; fill-in diagnostics for cheapAML state vars
1429        before any update (consistent with MITgcm state var diagnostics);
1430      - cheapaml_fields_load.F & cheapaml_init_varia.F : only fill outer edges if
1431        non periodic ; + adjusted for uWind,vWind (C-grid).
1432    o pkg/seaice:
1433      - remove dependence of pkg/seaice versus pkg/exf (file: pkg/pkg_depend) and
1434        add explicitly pkg/exf in experiments that currently use pkg/seaice.
1435      - allows to compile pkg/seaice without pkg/exf.
1436    o tools/OAD_support:
1437      - use a local copy (ourRWCPinBd) to ensure index ourRWCP stays within bounds
1438        of array "ourStepOf" in function rvNextAction (revolve.F90).
1439    o pkg/aim_compon_interf renamed to pkg/atm_compon_interf
1440      - change pkg name (to be used with other atmospheric physics pkg)
1441        but by-pass CVS when making the new pkg so that we keep the CVS history.
1442    o pkg/offline:
1443      - call OFFLINE_FIELDS_LOAD from pkg/offline/offline_init_varia.F
1444        (previously called from pkg/dic_surfforcing_init.F)
1445    o model/src:
1446      - re-order sequence of calls within packages_init_variables.F, using
1447        standard order, except for:
1448         DIAGNOSTICS_INIT_VARIA and OFFLINE_INIT_VARIA (called @ the top),
1449         CTRL_MAP_INI and OBCS_INIT_VARIABLES (called @ the bottom)
1450    o new pkg: atm_phys
1451      - add entry point and source code (previously in contrib
1452          verification_other/atm_gray/code_gray/) for new pkg "atm_phys"
1453        (atmospheric physics pkg from P. O'Gorman and T. Schneider, JCl, 2008).
1454      - re-order sequence of calls within packages_readparms.F,
1455         packages_init_fixed.F and packages_write_pickup.F
1456        (but skip packages_init_variables.F because of TAF issues).
1457      - update contrib/*/atm_gray/ experiment.
1458    o pkg/seaice (ITD code):
1459      - simplify and fix the writing of pickup-files for ITD case
1460    o pkg/seaice (ITD code):
1461      - introduce floe size dependent lateral melt for ITD case;
1462      - cleaning (avoid division by zero, change to f77 syntax, remove tabs)
1463      - update seaice_itd experiment main output.
1464    o pkg/thsice:
1465      - remove snowPrc from common block THSICE_FLUX, in THSICE_VARS.h and
1466        declared it locally (without bi,bj) in thsice_main.F & aim_do_physics.F;
1467        changed accordingly pkg/atm2d.
1468    
1469    checkpoint64g (2013/05/01)
1470    o pkg/exf ALLOW_RUNOFTEMP
1471      - if defined,  river and glacier runoff temperature can be read-in from
1472        runoftempfile; runoftempfile needs to have same format as runofffile
1473    o pkg/thsice (& pkg/bulk_force):
1474      - In case Energy-Reference-Level (ERL) is used (temp_EvPrRn=0), account
1475        for energy content of Precip + RunOff & Evap (like with pkg/exf).
1476      - change computation domain to always be the interior (without overlap).
1477      - fix bug (wrong overlap) when using EXF and stressReduction > 0.
1478    o verification/tutorial_global_oce_biogeo:
1479      - add preliminary OpenAD setup (still has problems)
1480    o pkg/seaice:
1481      - turn some parameters for choosing the convergence criterion of
1482        the inexact Newton method (JFNK) into runtime parameters for convenience
1483      - clean up seaice_calc_viscosities.F: remove/retire two options for
1484        SEAICetaZmethod (1,2), introduce area weighting for method 3; this changes
1485        the results of lab_sea/input because a division has been replaced by
1486        a multiplication with the reciprocal (sumNorm)
1487      - modify offline_exf_seaice/input.dyn_jfnk/data.seaice to improve
1488        convergence of solver (changes results, of course), and to test some
1489        new features
1490    o model/src:
1491      - remove unused (since Aug 2006) S/R SET_WRITE_GLOBAL_PICKUP and its call.
1492      - remove unused forcing field "dQdT" and associated parameter "dQdTFile".
1493      - move forcing adjustment (balancing surface forcing) in specific S/R
1494        where might also be applied exchanges (if needed) to forcing arrays.
1495    o pkg/shelfice:
1496      - allow to specify the Ice-Shelf mass per unit area (instead of
1497        shelficeLoadAnomaly) and do the conversion from one to the other
1498      - move loading from file of shelficeLoadAnomaly from SHELFICE_INIT_VARIA
1499        to SHELFICE_INIT_FIXED: (a) avoid some TAF recompution issues and
1500        (b) will be loaded in time (before calling INI_PRESSURE) in case it is
1501        needed in phi0surf for initial pressure calculation when useDynP_inEos_Zc
1502      - update isomip experiment forward output (get machine truncation error
1503        from conversion shelficeLoadAnomaly -> shelficeMass -> shelficeLoadAnomaly)
1504    o verification/offline_exf_seaice:
1505      revise data.seaice in input.thermo and input_ad and update results accordingly
1506        HO = 0.2, SEAICE_areaLossFormula = 2,
1507        SEAICE_growMeltByConv = .TRUE.,
1508        SEAICE_doOpenWaterMelt = .TRUE.,
1509      Improve consistency with input.thsice and fix the spurious 500m ice corners
1510    o verification/global_ocean.cs32x15:
1511      - set Energy Reference Level to liq. water @ 0 degC: temp_EvPrRn=0.,
1512        in icedyn (thsice+seaice-dyn) test and update output.
1513    o verification/offline_exf_seaice:
1514      - adjust list of tested variables (with testreport) and update
1515        standard test output with better slection of monitored fields.
1516    o pkg/cd_code:
1517      - swtich off Adams-Bashforth on the 1rst iteration. Update output of
1518        experiment lab_sea.hb87
1519    o tools/genmake2:
1520      - change default makedepend from the system default to tools/xmakedepend:
1521        When no makedepend is specified, select tools/xmakedepend it the test pass,
1522        otherwise select the system default (if exist and pass the test) or
1523        try to build cyrus-makedepend ; stop if none of the 3 works.
1524    o pkg/exf & pkg/thsice:
1525      - In case Energy-Reference-Level (ERL) is used (temp_EvPrRn=0), account
1526        for energy content of Precip + RunOff & Evap. Assumes:
1527       1) Rain has same temp as Air.
1528       2) Snow has no heat capacity (consistent with seaice & thsice pkgs)
1529       3) Run-Off comes at the temp of surface water (with same Cp)
1530       4) Evap over ocean is released to the Atmos @ surf-temp (=SST); should be
1531        put directly into Latent Heat flux & should use water-vapor heat capacity.
1532       5) Evap over snow/seaice (pkg/thsice) assumes constant Lf+Lv (consistent
1533        with snow having no Cp) => water vapor is released to Atmos @ 0^oC (=ERL).
1534    o pkg/seaice: simplify the use of CPP flags in JFNK-related files
1535        (compile when SEAICE_ALLOW_JFNK is defined)
1536    o pkg/thsice:
1537      - fix oceanic flux diagnostics & timeave (left from new sequence of calls
1538        implementation): move THSICE_AVE call after the advection (called directly
1539        from thsice_do_advect.F).
1540    o verification/global_ocean.90x40x15 and OpenAD:
1541      New experiment for OpenAD is identical to the one in input_ad except that
1542        multiDimAdvection=.FALSE.,
1543      There is still an issue with this.
1544    o pkg/thsice:
1545      - account for ice velocity (ocean relative velocity) in turbulent heat flux
1546        at the base of the ice; update output of global_ocean.cs32x15 (icedyn)
1547        and offline_exf_seaice (main test).
1548    
1549    checkpoint64f (2013/03/31)
1550    o verification/OpenAD:
1551      - new (smaller, without OAD_DEBUG) output_oadm.txt generated using gfortran.
1552    o verification/isomip, pkg/shelfice and OpenAD:
1553      - add OpenAD setup to this exp and make shelfice package work with OpenAD
1554    o verification/tutorial_global_oce_biogeo:
1555      - update AD and TLM output after turning off ALLOW_FE (in DIC_OPTIONS.h)
1556    o verification/offline_exf_seaice:
1557      - replace adjoint experiment (now similar to fwd input.thermo/ setup).
1558    o verification/tutorial_tracer_adjsens, pkg/ptracers and OpenAD:
1559      - add OpenAD setup to this exp and make ptracers package work with OpenAD
1560    o pkg/seaice/seaice_evp.F:
1561       mask the asymmetric contribution of the ice-ocean stress (when
1562       the turningAngle is non-zero) over open water to avoid stripes
1563       in the EVP-solutions after many EVP-substeps. This does not change
1564       the verification experiment (because turningAngle=0 in that experiment),
1565       but will affect other EVP solutions with turningAngle.ne.0
1566    o verification, AD & TLM output:
1567      - new TAF version 2.3.10 (previously 2.3.8) add more parenthesis in multiple
1568        additions and multiplications which affect results at machine truncation
1569        level. Update few AD output (1D_ocean_ice_column, bottom_ctrl_5x5,
1570        lab_sea.noseaicedyn & offline_exf_seaice) and TLM output
1571        (1D_ocean_ice_column & tutorial_tracer_adjsens.som81) which had only 12
1572        digits of matching.
1573    o pkg/seaice:
1574       modify lsr-algorithm so that it vectorizes AND converges by using a
1575       "zebra" method: split vector loop into two with step size 2; this
1576       solves a general convergence problem for the JFNK solver on a vector
1577       computer. It has the potential to even improve convergence for
1578       non-vector machines, but it does change the results so it is turned
1579       off by default. To turn on define CPP-flags SEAICE_VECTORIZE_LSR and
1580       SEAICE_VECTORIZE_LSR_ZEBRA in SEAICE_OPTIONS.h
1581    
1582    checkpoint64e (2013/03/05)
1583    o pkg/ecco and several verification experiments:
1584       Remove special versions of the_model_main.F, the_main_loop.F, forward_step.F
1585       from ecco package, and revert to unified routine in model/src/
1586       Adjust verification experiments accordingly, especially gloal_oce_llc90
1587       Should conclude long-standing work by Gael to reconsile the_main_loop with
1588       ECCO and will enable OpenAD's revolve loop in ECCO setup.
1589    o pkg/generic_advdiff:
1590      - implement compressible flow method for multi-dim advection (similar to
1591        gad_som_advect.F); add new option "GAD_MULTIDIM_COMPRESSIBLE" (since
1592        TAF generates many recomputations) to use it; no yet coded with implicit
1593        vertical advection.
1594      - change experiment advect_cs (new output) and advect_xy (same output)
1595        to test compressible flow multi-dim advection.
1596    o pkg/generic_advdiff:
1597      - fix SOM advection for unusual cases (linear Free-Surf in r*, other
1598        cases where linear Free-Surf is not @ k=1, e.g., useShelfIce)
1599    o pkg/seaice:
1600      - fix bug in the no-slip implementation in seaice_calc_strainrates.F, this
1601        bug affects two verification experiments (lab_sea and lab_sea.hb87),
1602        recover old (wrong) results by setting noSlipFac = 2. in
1603        seaice_calc_strainrates.F;
1604      - add another averaging method for etaZ (etaZmethod=3), a mix of 2 and 0
1605      - add runtime parameter SEAICE_JFNKepsilon for that finite difference
1606        gradient in the Jacobian times vector operation (s/r seaice_jacvec)
1607      - fix line search in seaice_jfnk.F (s/r seaice_jfnk_update)
1608    o pkg/seaice: reorganize seaice_lsr.F to be able to reuse more code:
1609      - new subroutines seaice_lsr_tridiagu/v
1610      - introduce loop bounds i/jmin/max to be able to use a restricted
1611        additive Schwarz method, but not used for now.
1612      - rename SEAICE_CALC_LSR_COEFFS into SEAICE_LSR_CALC_COEFFS
1613      - use new subroutines seaice_lsr_tridiagu/v in s/r seaice_preconditioner
1614    o OpenAD support
1615       Reorganize S/R call for overall time-stepping loop to facilitate
1616       OpenAD revolve loop replacement
1617       (new S/R main_do_loop.F)
1618    o model/src:
1619      - add 3-D array 3rd dimension to argument list of S/R ADAMS_BASHFORTH2/3;
1620      - pkg/cheapaml: remove local S/R ADAMS2d and use instead standard S/R
1621        ADAMS_BASHFORTH2.
1622    o pkg/cheapaml:
1623      - add new parameter (default=F, same as before) to disable full domain
1624        (including land) periodicity in X & Y dir.
1625      - new S/R CHEAPAML_COPY_EDGES to copy relaxation field into edges of
1626        prognostics field ; merge the 2 S/R cycle_2d_tracer and timestep_2d_tracer
1627        into single S/R CHEAPAML_TIMESTEP.
1628    
1629    checkpoint64d (2013/02/17)
1630    o pkg/monitor (angular momentum):
1631      - do not add Eta contribution to the total AM if using rigid-lid;
1632      - correct for Adams-Bashforth in zonal-wind part (instead of in AM_eta).
1633      - horizontal discretisation: compute Zonal wind contribution separately for
1634        each component (instead of from cell centered averaged) and use the 4
1635        grid-cell corner averaged value of Omega*(R*cos_Phi)^2 in AM_eta part.
1636      - Check that AM is conserved with linear dynamics (momAdvection=F and linear
1637        FreeSurf) if using vectorInvariant momentum.
1638    o model/src (horizontal grid):
1639      - move initialisation of all horizontal grid arrays to null value
1640        from specific horizontal grid S/R to main S/R INI_GRID;
1641      - add 2 new arrays to project model C-grid velocity on to zonal direction
1642        (similar to AngleCosC & -AngleSinC but at U and V point location) and
1643        compute them in S/R CALC_GRID_ANGLES.
1644    o pkg/seaice: replace a hard coded parameter by a runtime parameter
1645        SEAICE_JFNK_tolIter
1646    o pkg/seaice: introduce a restricted additive Schwarz (RAS) method in
1647        preconditioner for JFNK (run LSR into the overlaps as far as possible,
1648        i.e OLx/y-2, but overwrite the solution in the overlaps)
1649      - extend loop range in seaice_calc_viscosity
1650      - add new parameters SEAICE_OLx/y (default = OLx/y-2)
1651      - add flexible loop ranges to seaice_preconditioner, seaice_calc_lsr_coeffs
1652      - slightly modify loops in tridiagonal solver lsr-preconditioner
1653      - by default remove the extra exchange in seaice_preconditioner with a
1654        replacement of an undocumented CPP flag by SEAICE_PRECOND_EXTRA_EXCHANGE
1655      - modify offline_exf_seaice so that old results without RAS are reproduced
1656        for output.dyn_jfnk.txt
1657      in seaice_fgmres.F (unrelated to RAS)
1658      - add a cpp-flag option for a re-ordered mapping (potentially more
1659        efficient), but because this changes the results, turn it off by
1660        default
1661      - replace the save statement by local common blocks
1662    o utils/matlab:
1663      - fix tile-offset in rdmnc.m when output was produced using EXCH2.
1664      - update cs_grid/bk_line scripts to use load_grid.m (in utils/matlab)
1665        instead of local script "load_cs.m".
1666    o pkg/seaice:
1667      - fix a serious bug in seaice_fgmres.F, s/r seaice_scalprod, connected
1668        to the scalarProductMetric and the unrolling. By chance this does not
1669        change the verification experiment, because of the particular domain
1670        decomposition
1671    o pkg/diagnostics:
1672      - change default missing_value from UNSET_RL to -999.
1673    o pkg/layers: improve vectorization of layers_fluxcalc.F
1674      - step 1: split loops, make TatU/V 2D arrays. This alone reduces the cpu
1675        time spent in this routine by more than a factor of 3 on an NEC-SX8
1676      - step 2: replace search algorithm by a bisection algorithm found in
1677        Press et al. Numerical Recipes in Fortran. This algorithm can be
1678        vectorized and finds the correct bin in approx. log2(Nlayers) steps.
1679        For now, use this algorithm only for TARGET_NEC_SX defined.
1680      - moved the search algorithm into a separate subroutine, that is kept
1681        within the same file for automatic inlining.
1682      - modified catching potential errors
1683    o pkg/ecco:
1684      - add compile switches ALLOW_SHALLOW_ALTIMETRY and ALLOW_HIGHLAT_ALTIMETRY.
1685    o model/src, pkg/autodiff, pkg/ctrl, pkg/grdchk :
1686      - modifications for ALLOW_GENTIM2D_CONTROL
1687      -- forward_step.F, the_main_loop.F : pass options and arrays for adjoint tapes.
1688      -- load_fields_driver.F : add call to CTRL_MAP_GENTIM2D( myTime, myIter, myThid )
1689      -- add xx_gentim2d0/1 in ctrl_ad_check_lev1_dir.h checkpoint_lev1_directives.h etc
1690      -- use ctrl_swapffields.F (new) instead of exf_SwapFFields.F in ctrl_get_gen.F
1691    o model/src:
1692      - account for moist thermodynamics in (dry) potential temperature equation;
1693        update results of experiments: aim.5l_cs (x2), fizhi-cs (std + aqualev)
1694        and cpl_aim+ocn.
1695      - also switch to standard compiler (gfortran, was using ifort previously)
1696        for fizhi-cs experiments reference output.
1697    o pkg/ctrl:
1698      - 1st step toward generic time-varying control variable (2D) via CPP option
1699        ALLOW_GENTIM2D_CONTROL
1700      - note new namelist ctrl_nml_genarr in data.ctrl
1701    o verification/global_ocean.cs32x15:
1702      - switch off OLD_THSICE_CALL_SEQUENCE (both forward and AD code) to use new
1703        thsice calling sequence and update "output.icedyn.txt" output file.
1704    o pkg/ptracers:
1705      - from Ryan A.: code to allow to restart a tracer at regular time interval
1706        specifying a reset frequency and a reset-phase (for each tracers).
1707    o pkg/thsice:
1708      - implement new sequence of calls for thsice+seaice:
1709          previously:   ice-Dyn,ice-Advect,ice-Thermo(thsice)
1710          new sequence: ice-Thermo(thsice),ice-Dyn,ice-Advect
1711      - allows (with temporary CPP option "#define OLD_THSICE_CALL_SEQUENCE"
1712        in CPP_OPTIONS.h) to recover old sequence;
1713      - update diagnostics for Intermediate State thsice diagnostics: now filled
1714        just before advection (instead of just after advection in old sequence);
1715      - update output of experiment offline_exf_seaice (standard test);
1716      - in global_ocean.cs32x15 exp., postpone output.icedyn.txt update
1717        by setting #define OLD_THSICE_CALL_SEQUENCE in CPP_OPTIONS.h
1718    o pkg/aim_v23:
1719      - use tiled array for aim_CO2 and surface wind speed for export to coupler;
1720      - use standard pkg/mdsio routines to read & write CO2 pickup file;
1721      - in-line S/R AIM_AIM2DYN_EXCHANGES in aim_do_physics.F;
1722      - Implement new sequence of calls for seaice advection (with thsice and
1723        seaice diffusion): do ice advection after ice-Thermodynamic (previously
1724        was done before); change aim_do_physics.F (split the bi,bj loops block);
1725      - use same CPP option (OLD_THSICE_CALL_SEQUENCE) to recover old sequence;
1726    o pkg/thsice:
1727      - add a missing EXCH of sIceLoad in thsice_main.F (ocean set-up) for the case
1728        where just seaice diffusion is used without seaice-dynamics.
1729    
1730    checkpoint64c (2013/01/18)
1731    o pkg/seaice:
1732      - add a parameter JFNKres_tFac that can replace JFNKres_t
1733        (= JFNKres_tFac*JFNKresidual before JFNK solver)
1734      - add a line search option to the JFNK solver
1735      - move update of u/vIce and computation of initial residual into a separate
1736        routine (same file); makes the code a little easier to read (?)
1737      - the line search requires computation of the residual and for some reason
1738        I cannot do the update of u/vIce at the beginning of the Newton loop
1739        without changing the results, so we move computation of the new residual
1740        also to the end of the Newton loop, even without the line search
1741    o pkg/mdsio:
1742      - write missing value (corresponding to undefined array value) to meta files;
1743        skip this if missing value is one (UNSET_RL would be a better value for the
1744        case of undefined missing value but it's current the default missing-value);
1745        Also update mdsio_read_meta.F (reading timeInterval & missing-value).
1746    o pkg/exf & thsice:
1747      - for diagnostics purpose, fill-up and update Qsw array (+ fill the
1748        diagnostics) even when SHORTWAVE_HEATING is #undef;
1749    o verification/cfc_example:
1750      - turn on pkg/layers with pkg/diagnostics (to test pkg/layers and to
1751        illustrate how to use it).
1752    o verification/offline_exf_seaice:
1753      in input: add SEAICErestoreUnderIce=.TRUE., and reduce size of forcing
1754        files to only one time-record.
1755      in input.thermo: narrow the 2 bands of low initial ice-concentration near
1756        N & S edges; switch on SEAICErestoreUnderIce=T; use pkg/diagnostics for
1757        snapshot output; same mcPheePiston value as in thsice with
1758        surf-current=0.2m/s.
1759      in input.thsice: similar set-up as in input.thermo (channel with same seaice
1760        initial conditions).
1761    o verification/cfc_example:
1762      - update file "data" with more standard choice (default rotationPeriod,
1763        exactConserv=T, reduce ivdc_kappa to 10, remove multiDimAdvection=F,
1764        set deltaTFreeSurf to deltaTtracer) and update the output.
1765    o pkg/layers:
1766      - fix bolus part so that it compiles with #undef GM_BOLUS_ADVEC;
1767      - ensure that "layers_bolus" is switched to False when useGMRedi=False.
1768    o verification/offline_exf_seaice:
1769      - set all {field}period to zero for constant-in-time forcing (not tested
1770        anywhere else).
1771    o verification/offline_exf_seaice:
1772      - dyn_lsr  : use pkg/seaice S/R (instead of pkg/thsice) to advect sea-ice;
1773      - dyn_jfnk : use pkg/thsice S/R (instead of pkg/seaice) to advect sea-ice.
1774    o model/src:
1775      - implement Finite-Volume method for (hydrostatic) presure gradient
1776        from S.-J. Lin (QJRMS 1997), for atmosphere using sigma-coordinate.
1777    o pkg/seaice: implement EVP* by Lemieux et al. (2012).
1778      - In order to be compatible with the default EVP code, this requires changing
1779        the EVP code around a little; and because any small change immediately
1780        breaks the lab_sea.hb87 verification experiment, the reference output is
1781        updated two times (each time the remaining aggrement was only 2 digits):
1782        - after replacing 1/dt by 1*recip_dt with a precomputed recip_dt
1783        - after replacing 1/(1+0.5*dt/tau) by a/(a+1), with a=2*tau/dt
1784        The adjoint test lab_sea.evp also needed to be updated.
1785      - Turn on EVP* by setting SEAICE_deltaTevp as before, and setting
1786        SEAICEuseEVPstar=.true.; for EVP* SEAICE_deltaTevp does not need to be
1787        a factor of SEAICE_deltaTdyn, and you can set the number of EVP steps
1788        explicitly with SEAICEnEVPstarSteps (thereby overriding the default of
1789        INT(SEAICE_deltaTdyn/SEAICE_deltaTevp)). Controlling EVP* is deliberately
1790        kept obscure, because I need to test it a little more.
1791    o pkg/cheapaml:
1792      - fix few incorrect type (_RL/_RS) in subroutine calls.
1793    o pkg/seaice:
1794      - new S/R SEAICE_MAP_RS2VEC (similar to SEAICE_MAP2VEC) to map _RS arrays
1795        to _RL vector; this fixes JFNK code when compiling with "-use_r4" option.
1796    o model/src:
1797      - add a warning if using select_rStar=2 with nonlinFreeSurf <> 4;
1798        change (in input_ad*/data) select_rStar from 2 to 1 for AD verification
1799        experiments global_ocean.cs32x15 & tutorial_tracer_adjsens (+ update output)
1800    o pkg/cheapaml:
1801      - replace "273.1 _d 0" by celsius2K in pkg/cheapaml/cheapaml.F and
1802        update output of experiment cheapAML_box.
1803      - store in CHEAPAML.h coeffs ssq[0:2] for saturation specific humidity,
1804        and set them only in one place (cheapaml_readparms.F).
1805      - replace "273.16 _d 0" by celsius2K & replace "3.14159 _d 0" by constant "PI"
1806      - remove re-setting of main-model parameter "celsius2K" (in cheapaml_readparms)
1807        and re-setting of cheapAML params "lath" & "p0" (in cheapaml_init_varia).
1808    o model/src/the_main_loop.F:
1809      - fix revision 129 : need both ALLOW_ECCO and ALLOW_ECCO_EVOLUTION.
1810    o pkg/seaice:
1811      - remove legacy branch code.
1812      - retire SEAICE_GROWTH_LEGACY and SEAICE_CAP_HEFF accordingly.
1813    o verification/*/code*/SEAICE_OPTIONS.h:
1814      - remove documentation for retired CPP flags (SEAICE_GROWTH_LEGACY,
1815        SEAICE_CAP_HEFF).
1816    o pkg/cheapaml:
1817      - use standard routine (S/R GET_PERIODIC_INTERVAL) to decide when it is time
1818        to load new forcing fields.
1819      - add missing "_d 0" where it's needed; + some editing (improve indentation).
1820      - remove switch to "-r8" compiler option (no longer needed) in verification
1821        cheapAML_box, keep same output (small trucation error differences).
1822    o verification/offline_exf_seaice:
1823      - add thermodynamics only test.
1824    o verification/cheapAML_box:
1825      - split the domain in 8 (2x4) tiles; add MPI and multi-threaded test;
1826        keep same output (same 14 digits for cg2d).
1827      - switch on "-r8" compiler option (some numerical values are missing
1828        the "_d 0") and update output (only 6 digits for cg2d were preserved).
1829    
1830    checkpoint64b (2012/12/24)
1831    o pkg/cheapaml:
1832      - remove un-used variables (Qnet,EmPmR) from pickup files.
1833      - store tendency of advected variables into cheapaml pickup file
1834        and fix the AB-2 restart.
1835    o verification/offline_exf_seaice and lab_sea adjoint:
1836      - switch to new code (#undef SEAICE_GROWTH_LEGACY).
1837      - switch to 4 time steps in offline, consistent with lab_sea.
1838      - match parameters from SEAICE_GROWTH_LEGACY branch in data.seaice.
1839      - update results after change of experiment seaice.
1840    o pkg/seaice:
1841      - remove option SEAICE_MULTICATEGORY; has been replaced with run-time
1842        parameter SEAICE_multDim. Issue a warning if SEAICE_MULTICATEGORY is
1843        still defined since SEAICE_multDim needs to be set to MULTDIM value (from
1844        SEAICE_SIZE.h) to recover previous #define SEAICE_MULTICATEGORY default.
1845    o model/src:
1846      - add run-time parameter to select CG2D solver minimum-residual solution
1847        (in case of a poor convergence).
1848    o pkg/seaice/seaice_lsr.F
1849      - move calculation of matrix coefficients into new
1850        S/R SEAICE_CALC_LSR_COEFFS; for now this routine remains in the same
1851        file; the main purpose of this change is to be able to reuse the code
1852        in S/R SEAICE_PRECONDITIONER
1853      - modify the computation of the residual so that the mass of sea-ice
1854        is not used twice; this simplifies the calculations, but since
1855        the residual is never used except when LSR_mixIniGuess.ge.4---and this is
1856        not tested in testreport---this does not affect the testreport results.
1857    o verification/seaice_obcs:
1858      - disable SEAICE_GROWTH_LEGACY; reset input files to match those of
1859        verification/lab_sea/input.salt_plume; changes results/output.txt*
1860    o model/src:
1861      - adapt quasi-hydrostatic formulation to work with p or p* coordinate.
1862    o pkg/seaice:
1863      - improve description of parameters in seaice_fgmres.F and start
1864        cleaning up the code
1865      - change name of SCALPROD to SEAICE_SCALPROD and modify meaning of
1866        second argument
1867      - add a metric based on grid cell area to SEAICE_SCALPROD; update
1868        results of offline_exf_seaice.dyn_jfnk
1869      - compute initial residual norm in seaice_jfnk based on SEAICE_SCALPROD
1870    o pkg/aim_v23:
1871      - fix an other bug in dissipation heating (grid-cell area was missing).
1872    o model/src + pkg/seaice:
1873      - add global (multi-tile) linear solver for pair of tri-diagonal system
1874        along X and Y lines, respectively for U and V component.
1875        Note: 1) MPI and cube-exchange not yet coded.
1876            2) probably not accurate for poorly conditioned / large size problem.
1877      - add option for SEAICE_LSR to use global (multi-tile) tri-diagonal solver;
1878        default: not compiled and not used.
1879    o pkg/seaice:
1880      - first attempt at a multi-threaded fgmres solver for the JFNK solver:
1881        introduce bi/bj loops and use global_sum_tile_rl instead of
1882        mpi_allreduce in seaice_fgmres.F
1883      - improve diagnostics output for fgmres solver (seaice_fgmres.F)
1884      - replace a few unnecessary goto statements by if-blocks  (seaice_fgmres.F)
1885      - add a verification experiment for JFNK in offline_exf_seaice
1886    o verification:
1887      - change (for now, only fwd test) offline_exf_seaice experiment:
1888        use a re-entrant channel with idealized coastline (trapezoidal shape)
1889        at southern boundary to explore seaice dynamics and thermodynamics
1890        with simple forcing. Main set-up has dynamics+thermo and SST relaxation;
1891        secondary test (input.thsice) use thermodynamics only with SST relaxation.
1892      - add seaice-dynamics only secondary test using LSR and pkg/thsice advection.
1893    o pkg/exf:
1894      - disable "sstExtrapol" when Nr=1
1895    o verification:
1896      - add new experiment "cheapAML_box" (simple 1 layer set-up from Bruno Deremble)
1897        to test pkg/cheapaml.
1898    o pkg/aim_v23 & pkg/shap_filt:
1899      - fix dissipation heating (erroneous gravity multiplication factor).
1900    o pkg/seaice:
1901      - remove unused field pressPre from jfnk solver
1902      - rename two subroutines in seaice_preconditioner.F
1903    o eesupp/src:
1904       - S/R MDSFINDUNIT avoids reserved unit numbers (scrUnit1, eeDataUnit ...)
1905    o pkg/seaice/seaice_preconditioner.F: fix preconditioner once again
1906       - remove wrong parts of the rhs and the lhs (were in there
1907         because I did not understand the concept of this preconditioner)
1908       - add an exchange between u- and v-sweep. This increases communication
1909         by a factor of two but improves the convergence of jfnk. Ideally,
1910         one would like the u- and v-sweep to be independent. So far within
1911         undocumented ifdefs
1912       - reorganize the extra computations for printing the residuals
1913    o tools/genmake2:
1914      - comment out the "mpif.h" include in NetCDF test programm (for MPI built)
1915        since it's not necessary (and was preventing to use MNC in some cases).
1916    
1917    checkpoint64a (2012/11/16)
1918    o pkg/autodiff:
1919      - improve pkg-internal logical parameter switch (inAd/inFwd mode) so that
1920        autodiff_readparms.F no longer depends on calling order (within
1921        packages_readparms.F) and no longer requires to include ${PKG}_PARMS.h):
1922        rename param turnFreeDriftInAdMode to SEAICEuseFREEDRIFTswitchInAd
1923        and change param SEAICEuseDYNAMICSinAdMode to SEAICEuseDYNAMICSswitchInAd.
1924    o pkg/obcs:
1925      - adding tidal velocity forcing capability to obcs
1926        for usage example, see verification/seaice_obcs/input.tides
1927    o pkg/seaice:
1928      - turn the LSR-relaxation parameters WFAU/V into runtime parameters
1929        SEAICE_LSRrelaxU/V
1930      - introduce runtime parameter SEAICEetaZmethod (=0 by default)
1931    o pkg/aim_v23:
1932      - implement heating from friction (bottom friction and stratospheric drag).
1933    o pkg/shap_filt:
1934      - fix diagnostic "SHAP_dKE" (was 2 time smaller); implement heating from
1935        dissipation but only for Shap_funct=2, active when addFrictionHeating=T.
1936    o model/src:
1937      - move AddMass common block from DYNVARS.h to FFIELDS.h; allow to read-in
1938        time-constant addMass field from file (addMassFile);
1939      - support for heating due to friction (and Kinetic Energy dissipation):
1940        add option, run-time switch and 3-D field array + support code ; each pkg
1941        or S/R can add heating contribution (if there is a sink of KE); the sum is
1942        accounted for as a Temperature tendency term (EXTERNAL_FORCING_T).
1943    o pkg/seaice:
1944      - complete merge of ITD code into seaice_growth.F
1945        from MITgcm_contrib/torge/itd/code/
1946        no verification so far, but Torge Martin tested
1947        "1-D test case and Beaufort set up;
1948        deliver okay results after 1 model year."
1949      - complete merge of SEAICE_SIZE.h into all relevant routines
1950      - move computation of eta at Z-points into calc_viscosities
1951        + introduce global field etaZ
1952        + add different methods for computing etaZ, for now the old
1953          method (simple averages of eta to Z-points) is hardwired
1954        + replace etaMeanZ by etaZ in seaice_lsr, seaice_calc_residual,
1955          seaice_preconditioner
1956      - simplify computations for SEAICE_ZETA_SMOOTHREG
1957      - seaice_preconditioner:
1958        + replace one remaining press by pressLoc (mistake)
1959        + adjust printing of residuals
1960      - improve I/O of diagnostics of JFNK in seaice_jfnk.F:
1961        + add (SEAICE.h) and rename some counters (initiliased in
1962          seaice_init_fixed.F)
1963        + add _BEGIN/END_MASTER (myThid)  around print statements
1964        + print total number of iterations and failures over SEAICE_monFreq
1965          interval to STDOUT
1966      - move control over output-messages by fgmres to seaice_jfnk to save
1967        some operations
1968      - move resetting initial guess for fgmres outside of seaice_fgmres_driver
1969        in order to make restarts with sol .ne. zero (fgmres with restarts)
1970        (seaice_jfnk.F, seaice_fgmres.F)
1971      - seaice_calc_l/rhs.F: replace maskW/S by maskInW/S; this fixes
1972        a serious convergence problem when open boundaries are involved
1973    o pkg/ggl90: fix computation of control volumes for the case of
1974      ALLOW_GGL90_HORIZDIFF (probably not used very often): move control volumes
1975      up half a grid cell from C-centered to W-centered (pointed out by C. Eden)
1976    o pkg/seaice: simplify seaice_evp by avoiding use of extra fields u/vIceC
1977    o pkg/autodiff
1978      - Add inAdMode switch for SEAICEuseDYNAMICS:
1979        SEAICEuseDYNAMICSinAdMode
1980        (extend logic in ADAUTODIFF_INADMODE_SET)
1981    o pkg/seaice
1982      - Step 1 of merging ice-thickness distribution (ITD) code from
1983        MITgcm_contrib/torge/itd/ (author: Torge Martin)
1984        The code implements concept laid out in Thorndike et al. (1975);
1985        code is enabled via CPP flag SEAICE_ITD
1986        nITD (in SEAICE_SIZE.h) defines number of ice thickness categories;
1987        code is not complete yet!!
1988      - SEAICE_SIZE.h now included in almost all seaice routines
1989    o verification (using seaice):
1990      - switch back seaice-dynamics (+ lower SOLV_MAX_ITERS) in ADM exp.
1991        global_ocean.cs32x15.seaice ; update results.
1992      - compile B-grid dynamics in FW test exp 1D_ocean_ice_column ;
1993      - compile C-grid dynamics with #define SEAICE_ALLOW_JFNK in FW test exp
1994        offline_exf_seaice (previously compiling B-grid).
1995    o pkg/exf:
1996      - fix some STOP conditions in exf_check.F (from Aug 28, modifs did not allow
1997        to specify neither just 1 comp of wind or wind-stress, nor no surface momentum
1998        forcing): just replace CPP option ALLOW_ATM_WIND with run-time param useAtmWind.
1999    o pkg/layers (adjust changes from Sept 19):
2000      - do snap-shot output and fill diagnostics from inside iLa loop (layers_calc.F)
2001        this allows to remove "layers_maxNum" dimension from all layers arrays.
2002    o pkg/layers (adjust changes from Sept 19):
2003      - remove ALLOW_LAYERS_OUTPUT ; fix snap-shot and time-ave output ;
2004      - snap-shot extended to all type of layers (not just the 1rst type);
2005      - remove layers variables when corresponding CPP option is undef.
2006    o pkg/layers:
2007      - rename pkg/layers variable and add new output (layer exist & un-weighted
2008        velocity in layer)
2009    o pkg/seaice:
2010      - simplify (?) ocean-drag coefficent computations by using
2011        the same routine in all three solvers (saves some code lines)
2012      - remove global fields DRAGA and DRAGS from C-grid code and
2013        declare them locally in lsr.F (the only place where they are
2014        still used)
2015      - update AD output of lab_sea.evp (very sensitive anyway).
2016    o pkg/seaice: add Jacobian-free Newton Krylov solver for ice dynamics
2017      (Lemieux et al. 2010, 2012). Turn on with the usual SEAICE_ALLOW_JFNK
2018      and SEAICEuseJFNK=.true. A few things to note:
2019      - involves a FGMRES, that is parallel but very inefficient,
2020        because of many scalar products (global sums) in the Gram-Schmidt
2021        orthogonalization method. Needs to be replaced. Original code
2022        from J.-F. Lemieux
2023      - preconditioner for FGMRES is a stripped down version of LSOR
2024      - SOLV_MAX_ITERS is now used for LSOR as a solver and as a
2025        preconditioner. For the preconditioner, the default is set to 10.
2026      - Jacobian times vector is computed with finite differences
2027      - marginally related to JFNK-solver: add a smooth regularization for
2028        zeta with tanh that will improve convergence (Lemieux and Tremblay,
2029        2009) for any implicit solver (not implemented for EVP because EVP
2030        does not need this regularization in the first place). Define
2031        SEAICE_ZETA_SMOOTHREG in SEAICE_OPTIONS.h to use.
2032    o eesupp/src:
2033      - check in genmake2 that intrinsic S/R flush is available.
2034      - add S/R to flush IO unit (if intrinsic S/R flush is available)
2035      - flush standard & error msg unit before MPI termination
2036      - if debugMode, flush IO unit after printing msg
2037    o pkg/ctrl:
2038      - ctrl_unpack.F, ALLOW_GENARR3D_CONTROL code: fix missing argument in call
2039        to ctrl_set_unpack_xyz.
2040    
2041    checkpoint64 (2012/10/09)
2042    o pkg/shelfice
2043      - in mom_fluxform.F, mom_vecinv.F:
2044        CALL SHELFICE_V_DRAG(bi,bj,k,vFld,KE,KappaRU,vF,myThid)
2045        Bug fix KappaRU -> KappaRV
2046        does not change verification/isomip but may change other setups
2047        (presumably constant KappaRU=KappaRV)
2048      - fix diagnostics SHIU/Vdrag (thanks to Tom Millgate)
2049    o pkg/obcs:
2050      - fixed some indexing bugs in obcs_seaice_sponge.F
2051      - added obcs relaxation subroutines for HSALT and HSNOW
2052      - changes verification/seaice_obcs/results/obcs_seaice_sponge.F
2053  o pkg/seaice:  o pkg/seaice:
2054    - add "multicategory" parameterization for snow in analogy to ice,    - add "multicategory" parameterization for snow in analogy to ice,
2055      default is off for now.      default is off for now.

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