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revision 1.1794 by jmc, Thu Dec 27 20:09:11 2012 UTC revision 1.2117 by jmc, Fri Jan 23 01:45:07 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:
8      - change units of frictionHeating field from W to W/m^2
9      - fix bug in frictional heating from stratospheric drag in
10        S/R ATM_PHYS_TENDENCY_APPLY_V
11      - with synchronous time-stepping: move resetting to zero of frictionHeating
12        field from load_fields_driver.F to thermodynamics.F ;
13      - add diagnostics for frictional heating.
14    o model/src & gmredi K3D:
15      - add frictionHeating field to pickup-files (for synchronous time-stepping)
16      - move ALLOW_EDDYPSI block out of DYNVARS.h and merge it into FFIELDS.h
17      - rename uMean,vMean --> uEulerMean,vEulerMean (+ change diagnostics name
18        and name in pickup file).
19      - fix arguments of few DIAGNOSTICS_FILL calls in gmredi_k3d.F
20    o model/src:
21      - move (from ini_forcing.F) initialisation of all arrays in header file
22        FFIELDS.h into new S/R ini_ffields.F ; this fix broken restart
23        (since Nov 2012) with option selectAddFluid=1.
24    o pkg/shelfice:
25      - change units (+ document) of newly added field "shelfIceMassDynTendency"
26      - upgrade from _RS to _RL shelficeMass & shelficeLoadAnomaly arrays.
27    o pkg/obcs: re-organize obcs_calc_stevens.F to prepare for passive tracers
28    o pkg/seaice: two new runtime parameters:
29      - SEAICE_cStar replaces the hard wired "20" in the strength formulation,
30        long overdue
31      - SEAICE_tensilFac: preparation for Koenig-Beatty+Holland (2012)
32        parameterization of tensil stress for fast ice (does not do anything yet)
33    o pkg/seaice/seaice_check.F: left over from restricted addtive Schwarz method
34        for LSR: move checking overlaps out of JFNK-if-block
35    o pkg/atm_phys:
36      - move copy of grid and dynamical fields out of atm_phys_driver.F into
37        new S/R ATM_PHYS_DYN2PHYS.
38      - fix level height for Linear Free-Surf case (to be consistent with
39        fixed-in-time pressure levels).
40    o pkg/mom_common (bottomdrag):
41      - average bottomDragFld (ALLOW_BOTTOMDRAG_CONTROL) from grid-cell center
42        to correct location (U & V point) in S/R MOM_U/V_BOTTOMDRAG;
43        update output (adm & tlm) of experiment global_ocean.90x40x15.bottomdrag.
44    o pkg/shelfice (u/v_drag):
45      - add one argument (the other velocity component) to S/R SHELFICE_U/V_DRAG;
46      - use SHELFICEDragLinear & SHELFICEDragQuadratic in shelfice_v_drag.F
47        (now similar to shelfice_u_drag.F)
48      - remove condition on bottomDragTerms when calling SHELFICE_U/V_DRAG
49        from mom_vecinv.F (similar to mom_fluxform calls).
50    o pkg/mom_common (bottomdrag):
51      - add one argument (the other velocity component) to S/R MOM_U/V_BOTTOMDRAG;
52      - add options for alternative discretisation of velocity norm in quadratic
53        bottom drag: averaging of grid-cell-center KE to U.point and V.point
54        (selectBotDragQuadr=0, original code) can produce noisy patterns; this
55        improves when averaging only the other component (e.g. vVel for U bottom
56        drag) using wet-point method (selectBotDragQuadr=2) or not (=1).
57      - add options (bottomVisc_pCell) to account for partial-cell in bottom
58        friction (no-slip BC) thus getting the true distance from the bottom;
59        off by default since this also reduces model stability (explicit bottom
60        friction). Changes produce different machine truncation with linear-drag
61        + no-slip BC: update output of experiments exp4.stevens (10 digits) and
62        front_relax (bvp & mxl, 10 & 11 digits).
63    o model/src & mom pkgs:
64      - add one more level to vertical viscosity local arrays (Nr+1, previously Nr)
65        since no-slip bottom BC uses viscosity @ k+1 to update velocity @ level k
66      - for now and until vertical mixing scheme are updated to fill up level Nr+1,
67        just copy level Nr value to level Nr+1.
68    o doc:
69      - add notes form Abhisek Chakraborty on how to close Heat & Salt budgets.
70    o pkg/streamice:
71      - shelfice_init_varia.F, shelfice_init_fixed.F, shelfice_readparms.F,
72        SHELFICE.h: move array shelficemass to init_varia, initialise
73        from array shelficemassinit, which is set in init_fixed and
74        has option to be set from file; introduce array
75        shelficeMassDynTend array, set thru file in init_fixed
76      - NEW FILE: shelfice_step_icemass.F: update shelficemass from either
77        shelfIceFreshWaterFlux and shelficeMassDynTend or H_streamice in
78        pkg/streamice
79      - shelfice_thermodynamics.F: call shelfice_step_icemass if
80        SHELFICEMassStepping = .true.
81      - shelfice_ad_diff.list: add new subroutine shelfice_step_icemass.f
82    
83    checkpoint65h (2014/12/17)
84    o verification/global_ocean.90x40x15, global_ocean_ebm:
85      - update to generic controls.
86    o pkg/ctrl:
87      - ctrl_map_ini_genarr.F: test for igen>0
88      - ctrl_init_variables.F: add call to CTRL_MAP_INI_GENTIM2D.
89      - move gentim2d part of ctrl_map_ini_genarr.F to
90        new separate routine : ctrl_map_ini_gentim2d.F
91      - ctrl_cost_driver.F,ctrl_init.F ctrl_map_ini_genarr.F:
92        add time variable weights and cyclic controls (time mean,
93        seasonal cycle, etc) capabilities to gentim2d
94    o pkg/ecco:
95      - move reading of error, conversion to weights from
96        ecco_cost_init_fixed.F to ecco_toolbox.F (ecco_readwei)
97    o global_oce_llc90, cs32:
98      - activte sbo.
99      - CTRL_SIZE.h : add maxCtrlProc.
100      - activate the new genctrl capabilities.
101      - update following reorganization of global_oce_input_fields.tar.gz  
102    o pkg/ctrl/ctrl_ad_diff.list:
103      - add missing ctrl_init_rec.f
104    o tools/OAD_support/keepOriginal:
105      - add ctrl_init_rec.F
106    o model/src/the_main_loop.F, pkg/ctrl/ctrl_map_ini_genarr.F:
107      - avoid recomputations of xx_gentim2d_dummy.
108    o momentum diagnostics:
109      - move filling of diagnostics Um_Diss & Vm_Diss from mom_fluxform.F and
110        mom_vecinv.F to timestep.F (to include Smag-3D contribution).
111    o pkg/seaice/seaice_lsr.F:
112      - fix computation of BU/BV, make sure they are non-zero, only necessary
113        for cubed sphere exchanges and SEAICE_OLx/y>0.
114        This makes calling s/r fill_cs_corner_rl obsolete (removed).
115    o verification/global_ocean.cs32x15/input.seaice
116      - add test for strong implicit coupling and restricted addtive Schwarz
117        methods for LSR
118      - update results/output.seaice.txt
119    o verification/tutorial_global_oce_biogeo:
120      - AD & OAD set-up: switch off ALLOW_OLD_VIRTUALFLUX (like in fwd set-up)
121        and set PTRACERS_EvPrRn(1,2) to zero (for DIC & ALK);
122        update output_adm,_oadm,_tlm.txt
123    o pkg/dic:
124      - change default to "#undef ALLOW_OLD_VIRTUALFLUX" in DIC_OPTIONS.h
125      - add a stop when ALLOW_OLD_VIRTUALFLUX is defined and PTRACERS_EvPrRn
126        for tracer 1 & 2 is set (to avoid double counting of dilution effect).
127    o verification/tutorial_global_oce_biogeo:
128      - AD & OAD set-up: do not set PTRACERS_EvPrRn for tracer 1 & 2 since
129        dilution is already added by pkg/dic ALLOW_OLD_VIRTUALFLUX ;
130        update output_adm,_oadm,_tlm.txt
131    o eesupp/src:
132      - add fill_cs_corner_rl.F (_RL-copy of fill_cs_corner_rs.F)
133        and call it in seaice_lsr when using nonzero SEAICE_OLx/y
134    o pkg/seaice: introduce strongly implicit coupling, intended for stabilizing
135      LSR (following Hutchings et al. 2004)
136      - introduce zetaZ as a global variable (requires adjustments in
137        seaice_evp.F and seaice_jfnk.F) and compute analoguously to etaZ
138        in seaice_calc_viscosities.F
139      - new flag SEAICEuseStrImpCpl (default off)
140      - add new terms zetaZ*du/dy and zetaZ*dv/dx on both sides of the
141        momentum equations
142      - JFNK-solver (preconditioner) adjusted to allow using this method
143        (where it does not have any positive effect)
144    o pkg/seaice
145      - add overlap for restrictive additive Schwartz method also to LSR, but
146        turn it off by default (because it only seems to work for non-cubed
147        sphere/llc topologies)
148    o pkg/autodiff
149      - add extra exchanges in addummy_in_steppging also for mnc output
150    o pkg/seaice:
151      - add extra exchanges before dumping adjoint fields in seaice_ad_dump.F
152        to avoid stripes in the adjoint output (similar to addummy_in_stepping.F)
153    o pkg/obcs:
154      - add option to specify domain-connected piece Id along OB though files
155        (for now, only used to diagnose PhiVel; default =1 -> global correction)
156      - modify obcs_diag_balance.F to process each connected-part separately;
157        exclude OB where Id = 0 but keep the full divergence there (-> constant
158        Psi along this portion of OB and all inflow derived from grad(Phi))
159      - add example of OB-conect files in verification/so_box_biogeo/input.
160    o pkg/diagnostics:
161      - improve treatment of Open-Boundaries in Velocity-Potential calculation:
162      a) use non zero matrix element across OB and solve for Phi 1 grid point
163         outside OB (i.e, where tracer OBCS are applied).
164      b) global imbalance of inFlow/outFlow across OB: instead of modifying
165         velocity across OB, spread it uniformly along the OB in the RHS.
166    
167    checkpoint65g (2014/11/19)
168    o pkg/diagnostcis:
169      - add preconditioner off-diagonal factor (diagCG_pcOffDFac) as run-time param
170    o pkg/my82,pp81,kl10:
171      - fix ALLOW_3D_DIFFKR implementation (previously had no effect): use 3-D
172        field diffKr as background diffusivity to set minimum diffusivity value.
173    o pkg/seaice:
174      - add new parameter SEAICEuseEVPrev (for revisited EVP by
175        Bouillon et al 2013)
176      - add SEAICE_evpAlpha/Beta to namelist
177      - modify seaice_evp code to able to use SEAICEuseEVPrev. These changes
178        involve trivial re-ordering of divisions/multiplications that should not
179        have any effects, but ... they do change the results of lab_sea.hb87 so
180        that only 2 digits of agreement remain, in line with the general
181        instability/fragility of the evp-code. For now, I do not care and just
182        update the verification experiment
183    o pkg/ctrl : add generic pre-processing (xx_genarr2d_preproc etc)
184      - remove xx_genarr2d_numsmooth etc
185      - use xx_genarr2d_preproc etc instead
186      - carry out smooth_correl2D at initialization stage rather than during
187        time stepping.
188      - get smoothOpNb from xx_gentim2d_preproc
189    o global_oce_cs32 :
190      - add test of generic ecco capabilities.
191    o pkg/exf/exf_getsurfacefluxes.F :
192      - add to tmpUE/tmpVN rather than re-initializing them (conventional behavior).
193    o pkg/ctrl,ecco :
194      - omit un-necessary arguments to ctrl_cost_gen.F unless ECCO_CTRL_DEPRECATED
195        is defined.
196    o pkg/seaice: add diagnostics for Delta (deformation parameter)
197    o model/src:
198      - when ALLOW_3D_DIFFKR is defined, add a Warning if any of the vertical
199        diffusivity (background) is specified but ignored.
200    o verification:
201      - in testreport, convert hostname to lower case for default output dir name
202    o model, pkg : add useCTRL, useECCO parameters (on/off run time switch).
203    o pkg/dic: add modifications from Hajoon:
204      - add iron sedimentation flux function of the flux of PO4 out of bottom layer
205      - light attenuation: add self-shading effect by climatological Chlorophyll
206        (read from file).
207    o pkg/seaice/seaice_preconditioner.F : fix cpp flags, so that code also
208        compiles when SEAICE_ALLOW_DYNAMICS is undefined
209    o global_oce_llc90,cs32 : ecco_v4 verification exps now use separate
210        AUTODIFF_OPTIONS.h, CTRL_OPTIONS.h, ECCO_OPTIONS.h rather than
211        ECCO_CPPOPTIONS.h (i.e. replacing the deprecated, circumvoluted,
212        approach where CPP_OPTIONS.h includes an omnipotent
213        ECCO_CPPOPTIONS.h that superseeds pkgs '_OPTIONS.h').
214    o pkg/ctrl/ctrl_map_ini_genarr.F : include GMREDI_OPTIONS.h where
215        ALLOW_3D_KAPGM, ALLOW_3D_KAPREDI (to be added later) belong.
216    o pkg/seaice/SEAICE_SIZE.h : replace ALLOW_AUTODIFF_TAMC with ALLOW_AUTODIFF
217        to avoid needing AUTODIFF_OPTIONS.h anytime SEAICE_SIZE.h is included
218        (it seems that THSICE_SIZE.h, PTRACERS_SIZE.h have the same issue...)
219    o model/src, pkg/smooth, profiles, salt_plume, seaice, exf, ecco, ctrl :
220      add ECCO_OPTIONS.h, AUTODIFF_OPTIONS.h, CTRL_OPTIONS.h when needed
221      - ECCO_OPTIONS.h is needed when including ecco_cost.h, ecco.h
222      - AUTODIFF_OPTIONS.h is needed when including tamc.h, tamc_keys.h
223      - CTRL_OPTIONS.h is needed when including ctrl.h, optim.h, etc
224    o pkg/ctrl,ecco,exf :
225      - remove variables associated with NON-generic costs,
226        unless ECCO_CTRL_DEPRECATED is defined.
227      - remove NON-generic NON-obcs controls,
228        unless ECCO_CTRL_DEPRECATED is defined.
229    o pkg/ctrl : added ctrl_local_params.h
230    o pkg/ecco : added ecco_local_params.h
231    o verification : added ECCO_CTRL_DEPRECATED to most as and oad
232        experiments, which will progressively be removed once the
233        experiments are revised to use only generic controls/costs.
234    
235    checkpoint65f (2014/10/13)
236    o pkg/ctrl, ecco, seaice : minor changes in headers
237    o global_oce_llc90,cs32 : ecco_v4 verification exps now test generic
238        cost function and control capabilities added since checkpoint65c.
239    o pkg/ctrl: regroup all obcs ctrl variables in CTRL_OBCS.h.
240    o pkg/ecco: increase modularity and improve logic
241      - ecco_toolbox.F (new) : basic operations that are often used,
242        including ecco_zero, ecco_cp, ecco_cprsrl, ecco_diffmsk,
243        ecco_addcost, ecco_add, ecco_div, ecco_readbar.
244      - cost_gencal.F (new) : determine filnames and records.
245      - cost_genread.F, cost_generic.F : condense code using ecco_toolbox.
246      - cost_generic.F : use spzeroloc rather than hard-coded -9999,
247        and exploit the above functions leading to more compact code.
248      - cost_genread.F : rm un-necessary arguments, re-arrange args order.
249      - ecco_check.F, ecco_readparms.F : bring logic up to date (using_tpj,
250        using_ers, using_gfo, using_mdt is now only defined within gencost)
251    o pkg/ecco: extend generic cost capabilities
252      - pkg/ecco : added 3D gencost (ALLOW_GENCOST3D), added gencost
253        capabilities via gencost_preproc (+ _c,_i,_r related params),
254        gencost_posproc (+ _c,_i,_r related params), gencost_nrecperiod,
255        gencost_outputlevel arguments to cost_generic
256      - pkg/ecco/cost_genread.F (new) : interface between cost_generic
257        and active_read, making room for gencost_preproc to take effect.
258        Added preproc code ('climmon') to replace GENERIC_BAR_MONTH.
259      - pkg/ecco/cost_generic.F :
260        compute and store misfit maks*(model-data) in localdif that is
261        then used in cost and for output, output misfit if outlev.GT.0
262      - pkg/ecco/cost_averagesfields.F : depend on gencost_barskip
263        rather gencost_barfile for deciding whether to write barfile
264      - pkg/ecco/ecco_cost_driver.F : extract call to cost_profiles from cost_hyd
265      - pkg/ecco/ecco_cost_init_fixed.F : extract gencost weights from
266        ecco_cost_weights, re-activate ecco_summary, determine gencost_barskip
267      - pkg/ecco/ecco_summary.F : report gencost variables
268      - pkg/ecco/cost_gencost_customize.F : treat case of scatterometer costs
269    o pkg/sea/SEAICE_OPTIONS.h : add ALLOW_COST_ICE, ALLOW_SEAICE_COST_SMR_AREA
270    o pkg/ecco: internal re-organization
271      - resolve un-necessary dependancies within pkg/ecco and to pkg/ctrl
272        (rm includes of optim.h and ctrl.h, replace optimcycle with eccoiter,
273        mv relevant variables definition from ecco_cost.h to ecco.h,
274        make sure gencost routines only include ecco.h)
275      - throughout : add missing CCP switches, rm unused variables,
276        and rm un-necessary CPP switches
277      - throughout gencost routines : replace modelstartdate with
278        gencost_startdate when needed
279      - cost_bp_read.F : use arguments, instead of common blocs
280        so that it can be used also by (new) cost_gencost_bpv4.F
281      - ecco_init_varia.F : initialize RHOsumGlob_0, VOLsumGlob_0
282      - ecco_phys.F : compute etanFull
283      - ecco_readparms.F : rename using_topex as using_tpj, add
284        bpv4-grace to gencost list, initialize added parameters
285      - ecco_summary.F : include SIZE.h needed for augmented ecco.h
286    
287    checkpoint65e (2014/09/28)
288    o pkg/obcs:
289      - replaced the just-added CPP options with run-time variables
290        (see pkg/obcs/OBCS_PARAMS.h for details)
291    o pkg/obcs:
292      - add additional CPP options for sponge boundary layers
293        (see pkg/obcs/OBCS_OPTIONS.h for details)
294    o pkg/atm_phys:
295      - implement simple (obliquity only, assuming circular planet orbit)
296        seasonal cycle for incoming insolation ; used when run-time parameter
297        "select_incSW" is set to 1 ; by default (=0), uses old unchanged formula.
298    o pkg/exf, pkg/ecco, pkg/ctrl:
299      - add ctrlUseGen and .NOT.ctrlUseGen exclusive brackets
300      - activate gentim2d for xx_atemp,xx_aqh,xx_swdown,xx_lwdown,xx_precip
301      - implement gentim2d for xx_tauu, xx_tauv
302    o pkg/ctrl, pkg/ecco :
303      - fix and complement the generic controls implementation
304    o pkg/exf/exf_getclim.F, exf_getffields.F, exf_getsurfacefluxes.F,
305        pkg/shelfice/shelfice_thermodynamics.F,
306        verification/hs94.1x64x5/code_ad/ctrl_map_gentim2d.F,
307        verification/hs94.1x64x5/code_oad/ctrl_map_gentim2d.F :
308      - add weight in CTRL_GET_GEN calls
309    o pkg/ctrl :
310      - ctrl_get_gen.F : add weight as input parameter, and apply
311        it directly rather than using smooth_correl2Dw (to be retired).
312      - ctrl_map_gentim2d.F : add wgentim2d in CTRL_GET_GEN call
313    o pkg/ctrl :
314      - introduce run time switch ctrlUseGen (in ctrl.h, ctrl_check.F,
315        ctrl_init_variables.F, ctrl_readparms.F, ctrl_summary.F)
316      - re-activate ctrl_summary (call in ctrl_init.F)
317    o pkg/ctrl/ctrl_cost_gen.F :
318      - fix CCP brackets, remove un-necessary myiter, mytime
319    o pkg/ecco, pkg/ctrl :
320      - remove cost_genctrl.F (now pkg/ctrl/ctrl_cost_driver.F)
321      - remove cost_forcing_gen.F (now pkg/ctrl/ctrl_cost_gen2d.F)
322      - add ctrl_cost_driver.F (replaces pkg/ecco/cost_genctrl.F)
323      - add ctrl_cost_gen2d.F (replaces pkg/ecco/cost_forcing_gen.F)
324    
325    checkpoint65d (2014/09/15)
326    o pkg/ctrl/CTRL_GENARR.h, ctrl_readparms.F :
327      - add xx_genarr2d_bounds,xx_genarr3d_bounds,
328        xx_genarr2d_numsmooth, xx_genarr3d_numsmooth
329    o pkg/ctrl/ctrl_map_ini_genarr.F :
330      - remove compilation failure
331      - replace hard coded example
332      - use ctrl_map_ini_gen2D, 3D
333    o pkg/ctrl/ctrl_pack.F, ctrl_unpack.F :
334      - on/off switch based upon xx_genarr2d_weight,3d
335    o src/packages_init_variables.F :
336      - regroup pkg/estimation calls
337      - remove CTRL_MAP_INI, CTRL_MAP_INI_ECCO
338        (moved to ctrl_init_variables)
339    o cost/cost_init_varia.F :
340      - remove ecco_cost_init_varia
341        (moved to ecco_init_varia)
342    o ctrl/ctrl_init_variables.F :
343      - add CTRL_MAP_INI, CTRL_MAP_INI_ECCO
344      - add CTRL_MAP_INI_GENARR, SEAICE_CTRL_MAP_INI
345    o ctrl/ctrl_map_ini.F :
346      - remove ctrl_map_ini_genarr, seaice_ctrl_map_ini
347        (moved to ctrl_init_variables)
348    o ctrl/ctrl_map_ini_ecco.F :
349      - remove ECCO_PHYS (mv to ecco_init_varia)
350      - remove seaice_ctrl_map_ini (mv to ctrl_init_variables)
351    o ecco/ecco_ad_diff.list :
352      - add ecco_init_varia.f
353    o ecco/ecco_init_varia.F
354      - new routine
355    o pkg/streamice:
356      - move call to STREAMICE_INITIALIZE_PETSC from the_model_main.F
357        to streamice_init_fixed.F ; fix setting of STREAMICEisOn.
358      - from model/src, only call pkg/streamice routines if useStreamIce is TRUE.
359    o pkg/generic_advdiff:
360      - fix bug causing negatives in GAD_SMOLARKIEWICZ_HACK, introduced 8/8/2014.
361    o pkg/exf:
362      - exf_getffields.F : add xxg_atemp, xxg_aqh, xxg_swdown, xxg_lwdown,
363         xxg_precip capability
364      - exf_wind.F : no need for ALLOW_WSPEED_CONTROL cpp switch
365    o pkg/ctrl:
366      - ctrl_pack.F, ctrl_unpack.F : omit (un)packing of undefined xx_gentim2d
367    o model/src/load_fields_driver.F :
368      - move call to CTRL_MAP_GENTIM2D ahead of BULKF_FIELDS_LOAD, EXF_GETFORCING
369        so xx_gentim2d can be applied to e.g. exf fields in a timely manner.
370    o OpenAD verification experiments:
371      - Include explicitly AUTODIFF_OPTIONS.h, COST_OPTIONS.h, and CTRL_OPTIONS.h
372        in src files (to enable to skip the ECCO_CPPOPTIONS.h);
373        for now, only in pkgs used in OpenAD verification experiments.
374      - Change all except one (halfpipe_streamice) OpenAD experiments to use pkg
375        specific option file (AUTODIFF_OPTIONS.h, COST_OPTIONS.h & CTRL_OPTIONS.h)
376        instead of using ECCO_CPPOPTIONS.h (with all relevant options in it).
377        This applies to both TAF (*/code_ad/) and OpenAD (*/code_oad/) tests.
378    o OpenAD verification tests:
379      - finish removing ALLOW_AUTODIFF_OPENAD (replaced by ALLOW_OPENAD);
380      - finish replacing ALLOW_AUTODIFF_TAMC by ALLOW_AUTODIFF (except for
381        tape/storage which are specific to TAF/TAMC) in pkgs used in OpenAD exp.
382      - leave ALLOW_AUTODIFF_TAMC undef in OpenAD verification tests (*/code_oad/)
383        and remove local copy of "tamc.h" (needed only if ALLOW_AUTODIFF_TAMC).
384    o model/src & generic_advdiff:
385      - change hard-coded loop-range in S/R APPLY_FORCING_T/S to set T & S
386        forcing over 0:sNx+1, 0:sNy=1 (instead of just 1:sNx,1:sNy): Model
387        dynamics requires valid tracer forcing only over tile interior but, for
388        some diagnostics, may need to extend it over 1 point in tile halo region.
389      - in gad_calc_rhs.F, update calls to gmredi_x/ytransport to get valid
390        tendency over i,j_Min,Max range. This allows to simplfy i,j_Min,Max
391        setting in temp/salt/ptracer_integrate.F
392    o pkg/dic:
393      - multiply tracer tendencies by maskInC (if ussing OBCS) before updating
394        gchem tracers: this allows to skip the 2nd call to OBCS_APPLY_PTRACER
395        in gchem_forcing_sep.F
396    o pkg/autodiff & obcs:
397      - add storage of current OB values for U & V (was already done for T & S).
398    
399    checkpoint65c (2014/08/30)
400    o pkg/dic:
401      - take out of dic_atmos.F the initialisation part (corresponding to istate=0)
402        and move it to new S/R DIC_INI_ATMOS ; also simplify the dependencies for
403        AD compilers (but still a Pb with multi-threading and Ajoint dependencies).
404    o verification:
405      - new experiment testing OBCS and DIC pkgs, using params & output from
406        tutorial_global_oce_biogeo but limited to a sub-domain around Drake
407        passage: take OBCS from the last year of a 2 yrs simulation and initial
408        conditions from t=1.yr while keeping the same forcing.
409    o model/src:
410      - when allowFreezing=T, only reset below freezing initial Temp to Tfreezing
411        (at any k) if checkIniTemp is not set to FALSE (default checkIniTemp=T).
412    o pkg/diagnostics (Stats-Diags):
413      - re-write S/R DIAGSTATS_CALC (more similar to TARGET_NEC_SX part) to:
414        a) refine region where stats are computed, excluding where arrhFac=0 ;
415        b) fix missing interior mask (use with OBCS) in 3-D fields statistics;
416        c) extend regional stats over the region edges (for U or V pt location).
417    o pkg/gchem:
418      - add a (2nd) call to OBCS_APPLY_PTRACER in gchem_forcing_sep.F (needed since
419        pkg/dic is currently changing/updating ptracers values beyond the OB).
420    o verification (hs94):
421      - convert Held & Suarez external_forcing.F (from hs94.cs, with Sigma-coords
422        bits) to apply_forcing.F and undef USE_OLD_EXTERNAL_FORCING in experiments
423        hs94.cs-32x32x5 and tutorial_held_suarez_cs ; also use the same version of
424        apply_forcing.F in 2D hs94 (fwd, ad & oad) but keep LatLon hs94 unchanged.
425    o pkg/ptracers:
426      - implement Adams-Bashforth on pTracers (instead of on tracer tendency),
427        switched on by setting PTRACERS_doAB_onGpTr=F (default set to doAB_onGtGs)
428      - change exp4 secondary test (input.nlfs) to test AB on T & S & pTracer
429        with AB-2 code (so that it get tested).
430    o model/src:
431      - allow to apply Adams-Bashforth on Temp & Salt (instead of on gT,gS)
432        with AB-2 code (previously only available with AB-3 code).
433        Also move the code (call to ADAMS_BASHFORTH S/R) form thermodynamics.F
434        to temp/salt_integrate.F (since the 2nd part of gt/sNm1 update is done
435        there, by calling CYCLE_AB_TRACER).
436    o pkg/generic_advdiff:
437      - change Tracer argument (drop bi,bj indices) in S/R GAD_CALC_RHS,
438        GAD_C2_ADV_R, GAD_U3_ADV_R, GAD_C4_ADV_R, GAD_DIFF_R, GAD_BIHARM_R
439        + also in GMREDI_X/Y/RTRANSPORT ; and update corresponding calls in
440        S/R temp/salt/ptracers_integrate.F
441    o model/src & pkg/ptracers:
442      - remove common block variables gT,gS (in DYNVARS.h), except when
443         USE_OLD_EXTERNAL_FORCING is defined; update TAF storage accordingly.
444      - remove common block variable gPtr.
445    o model/src & pkgs:
446      - change gTracer (and/or tracer) argument (drop bi,bj indices) in S/R
447         ADAMS_BASHFORTH(2&3), CYCLE_(AB_)TRACER, FREESURF_RESCALE_G,
448         IMPLDIFF, SOLVE_TRIDIAGONAL & _PENTADIAGONAL, GAD_SOM_ADVECT,
449         GAD_ADVECTION, GAD_CALC_RHS, GAD_IMPLICIT_R, TIMEAVE_CUMUL_DIF_1T
450      + change accordingly all calling S/R.
451      - use local temperature/salinity/ptracer tendency array (without bi,bj)
452        in S/R temp/salt/ptracers_integrate.F
453    o pkg/seaice:
454      - move computation of stress contributions to rhsU/V in s/r seaice_lsr
455        to separate s/r seaice_lsr_rhsu/v in order to be able to re-use code
456      - make u/vIceC local variables if SEAICE_CGRID is defined only to be used
457        in seaice_lsr
458      - seaice_lsr.F: make local 4D arrays UXX, VYY, etc 2D
459        in s/r seaice_lsr_calc_coeffs
460    o pkg/mdsio:
461      - in MDS_READ/WRITE_FIELD, stop if file-name (+prefix) is too long
462        (e.g., > MAX_LEN_MBUF -90 ) or, in INI_MODEL_IO, if mdsioLocalDir is
463        too long (e.g., > MAX_LEN_FNAM/2 )
464    
465    checkpoint65b (2014/08/12)
466    o pkg/matrix:
467      - pass, as argument, updated tracer field to S/R MATRIX_STORE_TENDENCY_EXP
468    o model/src:
469      - fix initialisation of geothermalFile; compile geothermal-flux code in
470        natl_box verification experiment.
471    o model/src & pkg/down_slope:
472      - push the k loop inside S/R TIMESTEP_TRACER (now called outside the k loop).
473      - in dwnslp_apply.F, update tracer tendency instead of the future tracer
474        field and call S/R DWNSLP_APPLY before TIMESTEP_TRACER; this affects
475        results at machine truncation level: update output of experiments
476        global_ocean.90x40x15.dwnslp (FWD) and lab_sea.noseaicedyn (AD).
477    o pkg/diagnostics (Stats-Diags):
478      - do not cumulate the full volume when DIAGNOSTICS_FILL is
479        called with bibjFlg < 0 (no increment of the counter for 2D/3D diag);
480        This fix the mean statistics when DIAGNOSTICS_FILL is called multiple
481        times (but Min,Max and StD are still wrong).
482    o model/src:
483      - add geothermal flux forcing: read in ini_forcing.F as time-constant
484        field "geothermalFlux" applied in S/R APPLY_FORCING_T (apply_forcing.F)
485    o model/src:
486      - move CYCLE_TRACER calls from tracers_correction_step.F to temp/salt/ptracer
487        _integrate.F so that, when leaving S/R THERMODYANMICS, theta,salt and pTrac
488        arrays are already updated while adjustments (filters, conv.adjustment) are
489        still applied later, in S/R TRACERS_CORRECTION_STEP.
490    o model/src:
491      - store in common bloc array "rhoInSitu" the virtual potential temperature
492        anomaly that is used to compute geopotential: this make the atmos code
493        more similar to ocean code which already uses rhoInSitu in calc_phi_hyd.F
494    o pkg/seaice/seaice_lsr.F
495      - rename integer variable ilcall to ipass (that's what it is called
496        in the residual diagnostics
497      - change time stepping for NPSEUDOTIMESTEP > 2 (does not change the
498        default) for improved non-linear convergence of the first few steps
499      - adjust a few comments and add new ones to explain some of the store
500        directives
501    o pkg/generic_advdiff (& ptracers):
502      - re-work the code to check for valid advection scheme and for minimum
503        size of overlap (now stored in local common bloc in gad_advscheme.F)
504    o pkg/seaice: another attempt to make the adjoint work for sea ice dynamics
505      - re-initialize more variables in seaice_lsr: u/vIceC, u/vIceNm1
506      - add an auxilliary variable "bet" and fix store directives and keys in
507        seaice_lsr_tridiagu/v, this seems to do the trick (i.e. more or
508        less exact gradients in my tests); but there are still
509        recomputation warning (although gradients are sort of OK), when
510        SEAICE_LSR_VECTORIZE is not defined, so this flag and
511        SEAICE_LSR_VECTORIZE_ZEBRA are recommended for efficiency.
512      - update verification experiments lab_sea.
513      - change some comments in S/R seaice_calc_viscosities
514    o model/src:
515      - if staggerTimeStep=T, always apply exchange to velocity field in
516        do_stagger_fields_exchanges.F instead of in do_fields_blocking_exchanges.F
517        (independent of using multi-dim advection or not); no effect on FWD run
518        but affects AD results (at machine truncation level): update output of
519        experiment 1D_ocean_ice_column (ad: 12 digits), hs94.1x64x5 (ad,oad: 13.d)
520        and isomip (oad: 12.d).
521    o pkg/generic_advdiff:
522      - stop if doAB_onGtGs is set to FALSE but ignored
523      - refine warning related to stability of tracer time-stepping
524        regarding internal wave dynamics.
525      - setting of AdamsBashforth_T,S when doAB_onGtGs=F: remove condition
526        on staggerTimeStep & implicitIntGravWave (will now get a warning
527        if potentially unstable).
528    o pkg/kl10:
529      - add new pkg "kl10" for mixing due to internal wave breaking, from
530        http://www.sciencedirect.com/science/article/pii/S1463500310000144
531        (contribution from Jody Klymak), tested in verification experiment
532        verification/internal_wave/input.kl10/
533    o isomip experiment:
534      - test pkg/shelfice with Non-Lin Free-Surf in one of the FWD set-up
535        (input.htd) and update the output.
536    o cd_code experiments:
537      - use default cd_code options (#undef CD_CODE_NO_AB_MOMENTUM &
538        #undef CD_CODE_NO_AB_CORIOLIS) in experiments: cfc_example (fwd)
539        global_ocean.90x40x15 (ad & oad) and OpenAD (ad & oad) and
540        update the corresponding output.
541    o pkg/seaice:
542      - reduce the number of include files and store directives in
543        S/R seaice_lsr_tridiagu/v
544      - change the order of loops in one case in S/R seaice_lsr_tridiagv
545        (only for SEAICE_VECTORIZE_LSR_ZEBRA defined), which allows me to
546        get rid off one store directive (a TAF bug?)
547      - add one more instance of ifdef SEAICE_VECTORIZE_LSR_ZEBRA in
548        S/R seaice_lsr_tridiagv to change the loop range for consistency
549      - remove ilcall, m from parameter list of S/R seaice_lsr_tridiagu/v
550      - fix a bug that affects the JFNK solver: replace sNx/y by i/jMax in
551        S/R seaice_lsr_tridiagu/v (requires update of
552        offline_exf_seaice/input.dyn_jfnk)
553    
554    checkpoint65a (2014/07/27)
555    o model/src:
556      - Non-Lin Free-Surf in p/z coords: allows hFacW,S to be larger than
557        surrounding hFacC=1 @ edge of a step with different kSurfC on either side
558        (topo in p-coords, ice-shelf in z-coords); update output of experiments
559        tutorial_global_oce_in_p and isomip (both AD and OpenAD output).
560    o model/src:
561      - collect momentum forcing tendency into local 2-D array (passed as argument
562        to apply_forcing S/R); this simplifies mom. Forcing diagnostics and CD_CODE
563        parts in timestep.F (without CD_CODE_NO_AB_MOMENTUM defined = the default);
564        affects results at machine truncation level (e.g., if using OBCS_SPONGE).
565      - collect T & S forcing tendency into local 2-D array (passed as argument to
566        apply_forcing S/R); add 3-D diagnostics for temp & salt forcing tendency.
567        affects results at machine truncation level (e.g., ocean: if using
568        SHORTWAVE_HEATING ; atmos: if using FrictionHeating or (atm_Rq<>0) moist
569        correction due to vertical advection).
570      - update output of experiments: fizhi-cs-32x32x40 (13 digits),
571        global_ocean.cs32x15 (fwd: icedyn, seaice, thsice, all 3 @ 11d; adm & tml:
572        seaice_dynmix & thsice, fwd grd @ 3 & 8), hs94.1x64x5 (ad grd @ 13),
573        obcs_ctrl (ad & fwd grd @ 12 & 7).
574    o pkg/ptracers & diagnostics:
575      - use ptracers (short) name (instead of long one) to make ptracers diagnostics
576        title (to avoid some unexpected truncation); sort out ptracers diags units.
577      - collect ptracer forcing tendency into local 2-D array (passed as argument
578        to apply_forcing S/R); add 3-D diagnostics for ptracers forcing tendency.
579    
580    checkpoint65 (2014/07/18)
581    o pkg/fizhi:
582      - add parenthesis around fizhi tendencies in fizhi_tendency_apply.F: this
583        affects results at machine truncation level. Update output of experiments
584        fizhi-cs-32x32x40 (12 digits for cg2d) & fizhi-cs-aqualev20 (13 digits).
585    o pkg/seaice: more clean up
586      - rename TAF common block tapes to be more consistent and remove
587        unnecessary duplicates
588      - add store directives to remove more recomputations, but use smaller
589        tapes (and adjust keys) when SEAICE_LSR_ADJOINT_ITER is undefined.
590        The idea behind this flag is to reduce the memory footprint when the
591        adjoint of the LSR is not required. As of now, defining the flag
592        SEAICE_LSR_ADJOINT_ITER increases 4 common block tapes for 2D field by
593        a factor of SOLV_MAX_FIXED (=500 by default in SEAICE_SIZE.h).
594        For experiment offline_exf_seaice, this means on a linux box with gfortran
595        nearly a factor of 10 (but keep in mind there is mostly seaice code in
596        this experiment):
597        > size mitgcmuv_ad
598        text    data        bss     dec        hex
599        5100659 1216  220458952  225560827  d71c8fb
600        5339425 1200 1868783272 1874123897 6fb4dc79 (SEAICE_LSR_ADJOINT_ITER)
601        but only a moderate increase of 36% for global_ocean.cs32x15:
602        text    data        bss     dec        hex
603        6695027 1648 1014578664 1021275339 3cdf6ccb
604        6695203 1648 1382505320 1389202171 52cd8afb (SEAICE_LSR_ADJOINT_ITER)
605      - note: there are still recomputations in global_ocean.cs32x15 and
606        offline_exf_seaice and the gradient agreement changes (gets a
607        little worse) for global_ocean.cs32x15 (-> update output_adm.seaice.txt)
608      - in general, the AD gradients still are wrong
609    o OpenAD
610      - clean up code_oad/ directories somewhat by moving files
611        dontCompile, dontTransform, keepOriginal to OAD_support/
612    o model/src:
613      - using MOM fluxform and Non-Lin Free-Surf with momDissip_In_AB=F
614        (not currently tested): add dissipation terms before NLFS rescaling of
615        tendencies (previously done after).
616    o pkg/diagnostics:
617      - write stats-diags in ascii file with more digits (same as in monitor).
618    o pkg/down_slope:
619      - drop the bi,bj dimension of argument recip_hFac in S/R DWNSLP_APPLY; with
620        NLFS (not tested), use new recip_hFac value in order to conserve tracer.
621    o model/src:
622      - new file "apply_forcing.F" containing all the code previously in
623        external_forcing.F, but with new argument list: pass, as new argument,
624        the current level tendency array to update (instead of a direct update
625        of the common bloc array). Change the corresponding calls.
626      - add CPP option USE_OLD_EXTERNAL_FORCING (default is undef) to use
627        EXTERNAL_FORCING_U,V,T,S subroutines (for backward compatibility).
628    o pkg/seaice/seaice_lsr, a little bit of clean up
629      - rearrange some code blocks, so that now all calculations for
630        setting up the right-hand-sides done within one single block
631        (I find that easier to read and understand)
632      - rearrange freedrift-code to reduce the number of ifdefs
633      - adjust some indentations and comments
634    
635    checkpoint64z (2014/07/10)
636    o model/src and several pkgs:
637      - change argument list of all S/R called from external_forcing.F and
638        called from ptracers_forcing.F (renamed to ptracers_apply_forcing.F)
639        to pass, as argument, the current level tendency array to update
640        (instead of a direct update of the common bloc array).
641      - change also (in the same way) argument list of PTRACERS_APPLY_FORCING;
642      - rename taueddy_external_forcing.f to taueddy_tendency_apply.F
643    o pkg/seaice/seaice_lsr.F
644      - always initialize local arrays in seaice_lsr_tridiagu/v
645      - add more local tapes to seaice_lsr_tridiagu/v
646      - move storing u/vice(:,:,bi,bj) out of seaice_lsr_tridiagu/v, but
647        keep it in bi/bj loop; this seems to be essential
648      - gradients are still wrong but only by 4-7 orders of magnitude
649        instead of 15 orders of magnitude, lab_sea improves a little
650    o pkg/seaice
651      - (pkg/autodiff) remove storing/restoring of seaiceMaskU/V that
652        generates unnecessary code in seaice_lsr_ad
653      - add more store directives in seaice_lsr to avoid unnecessary code
654        in seaice_lsr_ad
655      - exclude some residual computations in seaice_lsr when
656        ALLOW_AUTODIFF_TAMC is defined in order to avoid unnecessary code
657        in seaice_lsr_ad
658      - add more storing, a new tape (model/src/the_main_loop.F) and
659        another key for SEAICE_LSR_VECTORIZE_ZEBRA (the local keys ilockey
660        and klockey should be checked by a specialist)
661      - modify ( define SEAICE_VECTORIZE_LSR and SEAICE_LSR_ADJOINT_ITER )
662        and update lab_sea after previous changes in pkg/seaice below
663    o pkg/autodiff:
664      - introduce useSmoothCorrel2DinAdMode, SEAICEapproxLevInAd, and
665        viscFacInAd : run time parameters allowing for adjoint switches
666        note : logic for useSmoothCorrel2DinAdMode is in ctrl_readparms.F
667    o pkg/ecco:
668      - introduce cost_gencost_boxmean.F that computes a box mean
669        temperature (for use in adjoint sensitivity studies).
670    o model/src/set_defaults.F : initialize viscFacAdj to 1.
671    o pkg/mom_common/mom_calc_visc.F:
672      - ifdef ALLOW_AUTODIFF then include viscFacAdj factor.
673    o pkg/seaice/seaice_summary.F:
674      - statement for SEAICEadjMODE now in autodiff_readparms.F
675    o pkg/seaice:
676      - remove some store directives and add new ones in an effort to get
677        finally rid off the recomputation warnings. This is successful
678        when SEAICE_VECTORIZE_LSR ***and*** SEAICE_LSR_ADJOINT_ITER are
679        defined (i.e. no extensive recomputation warnings left), but there
680        are still too many recomputations on the solver iteration level
681      - define SEAICE_VECTORISZE_LSR in offline_exf_seaice/code_ad/SEAICE_OPTIONS.h
682      - move definition of MPSEUDOTIMESTEPS into TAMC-block in
683        SEAICE_SIZE.h
684      - add a store directive in S/R seaice_calc_viscosities
685    o pkg/seaice (ITD code):
686      - fix definition of Hlimit for multi-threaded case
687      - use double precision arithmetic to compute Hlimit: this affects results;
688        update output of experiment seaice_itd.
689    o replace content of verification/seaice_itd
690      - instead of a 1D column use the configuration of offline_exf_seaice
691        to test the ice thickness distribution code with ridging
692      - this is a first shot at this experiment
693      - change of some defaults of ridging parameters SEAICEhStar (from
694        100 to 25) and SEAICEmuRidging (from 5 to 3) in seaice_readparms.F
695        and lot of new comments.
696    
697    checkpoint64y (2014/06/20)
698    o pkg/seaice/seaice_reg_ridge.F:
699      - modify the regularization of very small volumes of ice; only check
700        total volume HEFF, and do not apply correction to individual ice
701        classes because that leads to funny patterns in the heat and fw-fluxes
702        into the ocean. Adjust seaice_itd/results/output.txt
703      - replace nITD by SEAICE_multDim in loop-ranges
704    o pkg/exf:
705      - add code to process the case field period = -12. with UV interpolation.
706      - move debug print (formerly active when exf_verbose=T) from EXF_getFFieldRec
707        into S/R that calls it (i.e., exf_set_gen.F, exf_set_uv.F & obcs_exf_load.F)
708    o verification/global_with_exf:
709      - switch all fields period to -12. (was previously untested) in input/data.exf
710        (but keep secondary test ".yearly" unchanged); update the reference output.
711    o pkg/cal:
712      - new calendar type "noLeapYear" for 365 days calendar without any leap year.
713    o pkg/exf:
714      - new integer parameter "exf_debugLev" (default set to main model debugLevel)
715        to replace logical switch "exf_verbose"
716      - report in STDOUT when loading a new record (if exf_debugLev >= 3)
717    o pkg/sbo:
718      - update from Katherine Quinn: evaluate mass directly from density and SSH
719        (budget using Finite Volume method) instead of from bottom pressure.
720      - allow testreport to collect few selected SBO output ; tested in exp.
721        global_ocean.90x40x15 (after updating the results, to include SBO output).
722      - fix some multi-threading issues (in output part).
723    o model/src & most packages:
724      - always call {PKG}_READPARMS even if corresponding use{PKG}=F;
725      - in {PKG}_READPARMS, in case use{PKG}=F: add a call to new S/R
726        PACKAGES_UNUSED_MSG to print a weak warning when parameter file
727        "data.{pkg}" exist ; and leave the S/R (return) just after.
728      - more standard LAND pkg interface (land_init_fixed.F, land_check.F).
729        + call LAND_READPARMS from packages_readparms.F
730    o pkg/seaice:
731      - remove code that resets useThSice in S/R seaice_readparms and
732        replace it by a warning in S/R seaice_check
733      - remove parameter MULTDIM, replace with nITD and runtime
734        parameter SEAICE_multDim (still hard-wired to nITD if
735        SEAICE_ITD is defined)
736    
737    checkpoint64x (2014/05/24)
738    o verification/lab_sea:
739      - update adjoint and TLM output following changes to pkg/salt_plume
740      - un-do the update after putting back local recip_Cp in few places.
741    o pkg/salt_plume: modifications by An Nguyen:
742      - add capability to do brine rejection (salt-plume) as function of
743        volume+tracers (instead of only salinity tracer).
744      - conserve volume by exchanging volume from each kLev to above to
745        accommodate in-coming brine volume
746      - store surface and klev exchanged fraction + volume in 4 new 3-d arrays
747      - switch KPP surf buoyancy due to brine forcing to 3-d
748        (3 more 3-d arrays, 2 for SPforcing[T,S], 1 for boplume)
749      - add salt_plume_volfrac, salt_plume_apply, salt_plume_tendency_apply_t
750      - unrelatedly, also add ad-hoc capability to vary salt_plume scheme
751        in East/West Arctic.
752    o pkg/sbo:
753      - incorporate modifications from Katherine Quinn to enable the use of sbo
754        pkg in ECCO-v4 set-up ; remove SBO-TimeAve output ; add monitor-like
755        output for future testreport verification (unfinished).
756    o pkg/atm_phys:
757      - change diagnostics (AtPh_Trf & AtPh_Qrf) of DARGAN_BETTSMILLER S/R:
758        skip the reseting of t_ref & q_ref to initial t & q ; this preserve the
759        output of S/R CAPECALCNEW (Parcel temp & q) for diagnostics.
760    o pkg/seaice
761      seaice_calc_ice_strength.F: modify expression to avoid divisions
762        (affects truncation)
763      seaice_do_ridging.F: clean up the insectarium
764      - fix a bug that was compensated by areaScaling (-> remove areaScaling code)
765      - added SEAICEsnowFracRidge to redistributed snow (2nd bug)
766      - set closing/openingRate to zero where no extra iteration is need (3rd bug)
767      - add some debugging information and error messages (warnings)
768    o model/src: modifications relatd to atmosphere p*:
769      - Switch to more accurate p* coordinate slope term (calc_grad_phi_hyd.F)
770      - With p* or Sigma-P, use constant reference Pot.Temp (thetaConst) instead
771        of vertical profile tRef in geopotential background and anomaly.
772      - Acount for true p* correction in theta <-> T conversion in pkg/aim_v23
773        and pkg/atm_phys.
774      - Update FWD output of experiments: aim.5l_cs (x2), fizhi-cs-32x32x40,
775        fizhi-cs-aqualev20, fizhi-gridalt-hs, tutorial_held_suarez_cs, cpl_aim+ocn.
776    o pkg/seaice: fix a bug in seaice_prepare_ridging.F, forgot a sqrt
777    o pkg/ptracers: compute ptracer source/sink due to linear free surface.
778        not used right now, but can be used in BGC packages to fix conservation.
779    o pkg/dic, pkg/gchem: move tracer_meanarea to gchem, so it can be used by
780        other packages too.
781    o pkg/seaice/seaice_calc_ice_strength.F: replace SEAICE_rhoSnow by
782        SEAICE_rhoIce in the Rothrock (1975)-type strength calculations (bug fix)
783    o model/src:
784      - since we have several heat capacity (even in model/src), define "recip_Cp"
785        as local variable (no longer in common block) to avoid any confusion.
786      - add thetaConst in PARAMS.h (to be used with pStar or sigma-P coords).
787    o pkg/exf:
788      - from Jeff Scott: add option (#define EXF_CALC_ATMRHO) to calculate local
789        air density as function of air Temp, Humidity and atm pressure.
790    
791    checkpoint64w (2014/05/02)
792    o verification:
793      - update output_adm.txt files for experiment global_ocean.cs32x15 (seaice &
794        seaice_dynmix) and lab_sea (primary test & noseaicedyn): moving/changing
795        code from seaice_growth.F & seaice_advdiff.F to new ridging routines
796        seaice_reg_ridge.F seaice_do_ridging.F affects AD gradient
797        (down to 8-7 matching digits for global_ocean and 5-6 for lab_sea).
798    o model/src: for atmosphere in p* coords:
799      - store factor rStarFacC**atm_kappa (= pStarFacK) in common block
800      - implement more accurate p* coordinate slope term (in calc_grad_phi_hyd.F),
801        but not yet activated.
802    o pkg/seaice: fix restart problem for ITD with new ice strength parameterisation:
803      - move computation of opnWtrFrac = 1-AREA to before computing ice strength
804      - this changes the results (but not for any verification experiment, because
805        none tests this), but avoids having an extra field in the restart files
806    o pkg/seaice: remove global variable TICE (not needed)
807      - replace by TICES or local variable where necessary (cost_seaice_test,
808        seaice_diagnostics_state)
809      - move copying TICE to TICES from seaice_check_pickup to seaice_read_pickup
810      - use specific read/write routines for reading and writing individual leves
811        of a multilevel field
812    o pkg/ctrl & model/inc:
813      - move additional anomaly fields of control vars (related to options:
814         ALLOW_KAPGM_CONTROL, ALLOW_KAPREDI_CONTROL and ALLOW_BOTTOMDRAG_CONTROL)
815        from DYNVARS.h into new header file: CTRL_FIELDS.h
816    o pkg/seaice: some small modifications to the ridging code
817      - make fw2ObyRidge a global variable and add the freshwater flux to
818        seaice_growth
819      - pass actual thickness from seaice_prepare_ridging, so that it is
820        computed only in one place and compute it in the same way as in
821        seaice_growth
822      - initialise more fields in seaice_do_ridging that where cause floating
823        point exceptions over land
824    o pkg/seaice: preparations for ridging code and first real ridging code
825      - move most of "PART 1" of S/R seaice_growth into a new and separate
826        S/R seaice_reg_ridge that will both regularize the state variable after
827        advection call the actual ridging routine;
828      - requires to make 5 fields global fields: d_HEFFbyNEG,d_HSNWbyNEG,
829        d_AREAbyRLX,d_HEFFbyRLX,saltFluxAdjust;
830      - remove ridging code from seaice_advdiff
831      - clean up remaining part 1 of seaice_growth in an attempt to make it
832        more readable (this is probably subjective)
833      - call seaice_itd_redist once in the initialisation phase to have the initial
834        conditions in the correct category
835      - finally: add new ridging routine for ITD code
836    
837    checkpoint64v (2014/04/11)
838    o pkg/ecco:
839      - add runtime parameters mdt[start,end]date[1,2]
840      - rename variable "tpmean" as "mdt" and "topexmeanfile" as "mdtdatfile"
841    o pkg/seaice:
842      - make deltaC a global variable, so that it can be used in ridging code
843      - first step towards ridging: introduce new routines that compute
844        ice strength based on ridging parameters
845      - add diagnostic for HSNOWITD
846      - add opnWtrFrac as a global variable (required for ridging scheme)
847    o pkg/salt_plume + pkg/seaice/seaice_growth.F
848      - add SALT_PLUME_IN_LEADS flag to activate pkg/salt_plume only when ice
849        AREA exceeds a threshold (code contributed by I.Fenty in 2011)
850    o verification/hs94.1x64x5:
851      - leave ALLOW_AUTODIFF_TAMC undefined in code_oad/AUTODIFF_OPTIONS.h
852      - do not use ECCO_CPPOPTIONS.h anymore for TAF & OpenAD Adjoint tests.
853    o autodiff:
854      - Start to include explicitly AUTODIFF_OPTIONS.h, COST_OPTIONS.h,
855        and CTRL_OPTIONS.h in src files (to enable to skip the ECCO_CPPOPTIONS.h)
856        For now, only in pkgs used in verification/hs94.1x64x5.
857      - Replace ALLOW_AUTODIFF_TAMC by ALLOW_AUTODIFF (except for tape/storage
858        which are specific to TAF/TAMC).
859      - Replace ALLOW_AUTODIFF_OPENAD by ALLOW_OPENAD:
860        since ALLOW_OPENAD is defined in PACKAGES_CONFIG.h (any time pkg/openad
861        is compiled), this simplifies/reduces which *_OPTIONS.h file to include.
862      - OpenAD: change Makefile to generate the appropriate AD_CONFIG.h when
863        building mitgcmuv_ad (make adAll).
864    o pkg/ecco:
865      - cost_gencost_seaicev4.F:
866         reformulate proxy cost as function of sst and local param SEAICE_freeze
867         change cost names from siv4-[sst,vol] to siv4-[deconc,exconc]
868      - add stop statement if old names siv4-[sst,vol] are used
869      - add snapshots + cost reports for atmospheric longwave
870      - remove factor 0.1 in front of wtau[u,v]
871      - replace never used flag ALLOW_TMI_COST_CONTRIBUTION with
872         ALLOW_TMI_SST_COST_CONTRIBUTION
873    o pkg/atm_phys:
874      - add some diagnostics for Short-wave and for convection S/R.
875    o pkg/seaice/seaice_growth:
876      - fix a bug in the lateral melt parameterization for SEAICE_ITD
877        in seaice_growth; tempFrz needs to be computed inside the i/j-loop
878      - rearrange loop order for better vector code in the same code block
879      - rewrite the floeDiameter formula to have fewer divisions
880      -  (miraculously) none of this changes the results of seaice_itd
881    o pkg/smooth:
882      - move param smooth2Ddiffnbt to pkg/ecco
883    o pkg/salt_plume:
884      - salt_plume_frac.F:
885         clean up local param names
886         reformulate (1-frac) to frac; original 1-frac was based on swfrac code
887    o pkg/rw:
888      - add RS version of S/R READ_MFLDS_LEV.
889    o pkg/streamice:
890      - fix the restart test by writing/reading pickup_streamice files.
891    o pkg/seaice:
892      - refine checks for jfnk-related parameters
893      - comment out if statement with SEAICEuseIMEX parameter as long as there
894        is no IMEX code to avoid confusion and surprises
895    
896    checkpoint64u (2014/03/07)
897    o verification/MLAdjust:
898      - rename secondary test suffix:
899         1.leith  -> A4FlxF  + switch to flux-form & add side-drag
900         0.leithD -> AhFlxF  + switch to flux-form
901         0.smag   -> AhVrDv  (use Vorticity-Div. visc form) + add side-drag
902         0.leith  -> AhStTn  (use Strain-Tension visc form) + add side-drag
903    o pkg/mom_vecinv:
904      - remove unused arguments from S/R MOM_VI_HDISSIP & MOM_HDISSIP (as it used
905        to be before mom_calc_visc.F)
906      - skip the call to MOM_CALC_TENSION & MOM_CALC_STRAIN if not needed.
907      - add 2nd copy of vort3 & strain that knows about lateral BC (free/no slip):
908        this is simpler for the adjoint and for diagnostics.
909    o model/src + pkg/momentum:
910      - add input files for  2-D additional Western and Southern cell-edge wall
911         (e.g., to add "thin-wall" where it is =1).
912      - fix sideDrag option for thin-walls with Non-Lin Free-Surf
913        using 2nd hFacZ that is computed from initial (fix domain) hFac
914      - known limitations of thin wall implementation: not yet coded for sigma
915        coords; not working with CD-scheme neither.
916    o pkg/seaice:
917      - rename recently introduced parameters from (wrong name) AB to
918        BDF (backward difference time discretisation)
919      - retire runtime parameters SEAICEuseAB2, SEAICE_abEps
920    o tools/adjoint_options:
921      - remove setting of "OPENAD=true" (now set by command line "genmake2 -oad")
922    
923    checkpoint64t (2014/02/01)
924    o pkg/ecco
925      - add compile flag ALLOW_GENCOST_TIMEVARY_WEIGHT in ECCO_OPTIONS.h and
926        runtime logical flag gencost_timevaryweight to read daily sea-ice sigma
927      - replace hard-coded record number and period which only work for monthly
928        with read-in runtime param that works for other periods (month,day,year)
929    o pkg/thsice
930      - corrected store directive fixes thsice adjoint gradient checks
931    o genmake2 & testreport:
932      - add genmake2 option "-oad" to generate a Makefile for OpenAD built and
933        in this case, use tools/adjoint_options/adjoint_oad as default AD optfile.
934        Update testreport accordingly. No need to set "export OPENAD=true"
935        in adjoint_options/adjoint_oad anymore (will be removed later).
936    o pkg/shelfice:
937      - put T & S shelfice forcing into model surfaceForcing_T,_S (for now,
938        only if SHELFICEboundaryLayer=F); Change model/src/external_forcing.F
939        so that surface forcing applies to k=kSurf if using pkg/shelfice.
940    o pkg/ctrl, pkg/grdchk, pkg/ecco:
941      - Changes to make GENARR more modular (i.e. invisible if not used)
942    o model/src/temp_integrate.F and salt_integrate.F
943      - re-include store directives that were removed on Dec 27th.
944    o model/src/external_forcing_surf.F
945      - add storage directives for EmPmR and PmEpR to avoid recomputation of
946        seaice_model in the adjoint that is problematic when seaice_model is
947        turned off in the adjoint. The resolved issue dated back to July when
948        EXTERNAL_FORCING_SURF call was moved.
949        Update global_ocean.cs32x15/*/output_adm.seaice_dynmix.txt accordingly.
950    o pkg/exf/exf_check.F
951      - fix a small bug again (originally found by Wentao Liu, now found again)
952      - streamline error output
953    o pkg/streamice and aim_v23:
954      - replace a few "_EXCH_XY_RL (" with "_EXCH_XY_RL(", so that
955        Apple's /usr/bin/cpp knows what to do:
956        Apple LLVM version 5.0 (clang-500.2.79) (based on LLVM 3.3svn)
957        Target: x86_64-apple-darwin13.0.0
958    
959    checkpoint64s (2014/01/05)
960    o tools/adjoint_options:
961      - switch to fastopt.net TAF server (instead of default fastopt.de) for
962        AD optfiles adjoint_diva & adjoint_f95 (similar to adjoint_default).
963    o model/src:
964      - remove some unnecessary TAF storage directives in forward_step.F and
965        in dynamics.F (note: not always removed by TAF, e.g., double storage
966        of kappaRU,kappaRV in former version of dynamics.F).
967    o model/src & pkg/ptracers:
968      - call directly GAD_IMPLICIT_R & IMPLDIFF + DWNSLP_APPLY from temp_integrate.F
969        salt_integrate.F and ptracers_integrate.F (instead of from thermodynamics.F)
970        and remove ptracers_dwnslp_apply.F & ptracers_implicit.F
971      - call MATRIX_STORE_TENDENCY_EXP for each tracer (in ptracers_integrate.F)
972      - add fZon & fMer as output argument of S/R GAD_CALC_RHS.
973      - update TAF AD-output of experiments global_ocean.90x40x15 (13 for AD-grad).
974    o useSingleCpuInput separates single-CPU input from single-CPU output;
975        for now only implemented for in exf_interp_read.F
976    o verification/advect_xy:
977      - fix missing EXCH call in local version of ini_salt.F and update output.
978    o momentum diagnostics:
979      - fix which deltaT is used in Total-Tendency diagnostics.
980      - fix typo in diagnostics for momentum tendency from AB.
981    o pkg/seaice/seaice_lsr.F: fix an initialisation bug for the
982        SEAICE_VECTORIZE_LSR_ZEBRA option that lead to NaNs on a NEC-SX8
983    
984    checkpoint64r (2013/12/08)
985    o verification/*/results:
986      - Update reference output of experiments that were passing with just 13 digits
987         (make it easier to detect future changes in results)
988    o model/src & pkg/ptracers:
989      - move calls to GAD_ADVECTION (Multi-Dim advection) from thermodynamics.F to
990        inside temp_integrate.F and salt_integrate.F and from ptracers_advection.F
991        to inside ptracers_integrate.F ; remove ptracers_advection.F
992    o coupling interface pkgs:
993        [atm_compon_interf, ocn_compon_interf & atm_ocn_coupler]
994      - change the config check to test the agreement of Ocean Depth
995        with ATM land/sea mask (instead of ATM orography);
996      - send to coupler the number of coupler time-steps to do for this run:
997        this allows to check for consistency and don't need anymore to be
998        specified in parameter file "data";
999      in coupler:
1000      - check consistency of RunOff map versus Ocean Depth and ATM land/sea mask.
1001      - improve report to log-file of config setting (pass log-file unit to few S/R)
1002    o pkg/compon_communic:
1003      - add coupling send/receive for non-tiled integer vector;
1004      - add S/R to check and stop if any proc has an error (similar to
1005        eesupp/src/stop_if_error.F but single thread and across Comm_World).
1006    o pkg/exch2:
1007      - in exch2*_get_rx[1,2]: use new list "W2_tileIndex" to replace search
1008        through list of all tiles my proc owns.
1009    o model/src:
1010      - AUTODIFF only: in calc_adv_flow.F, recompute rTransKp (instead of copying
1011        from rTrans) to simplify dependencies (no need to store rTrans anymore in
1012        calling S/R); this affects AD results at machine truncation level:
1013        update AD-output (TAF) of experiments: 1D_ocean_ice_column,
1014        bottom_ctrl_5x5 & obcs_ctrl (12 digits for AD grad, same FWD grad).
1015    o tools/build_options:
1016      - simplify Warnings options (-ieee & -devel cases) in linux_amd64_gfortran
1017    o coupling interface pkgs:
1018        [compon_communic, atm_compon_interf & ocn_compon_interf]
1019      - move declaration of local array "ibuf" out of header file "CPLR_SIG.h"
1020        to each S/R that needs it; remove un-used variables.
1021      - change component tile registration (cpl_register.F in both compon_interf
1022        and mitcomponent_tile_register.F) to pass the full list of tiles
1023        information (including bi,bj) in 1 vector (instead of in a bi,bj matrix).
1024      - with pkg/exch2: adopt the same convention used for I/O to define mapping
1025        towards coupler global array (unless W2_useE2ioLayOut=F):
1026         a) can now use different tiling between atm & ocn comp.
1027         b) no needs to modify the run-Off map when changing tiling (was needed
1028            even if using the same tiling between atm & ocn).
1029         c) will allow to run with blank-tiles in 1 component (e.g., for ocean
1030            full land tiles); not yet tested.
1031      - check for valid mapping from comp. tile to coupler global array
1032      - improve report of tile registration results to log file.
1033    o pkg/exch2:
1034      - in eesupp/src/eeboot.F: move call to W2_EEBOOT before Coupler
1035        tile-registration (CPL_REGISTER);
1036      - activate (un-comment) definition and setting of "W2_tileIndex" list to
1037        store the local bi,bj indices of each tile;
1038      - also print bi,bj in local report to log file;
1039      - fix pkg/debug/debug_cs_corner_uv.F for the case nSy > 1 (left from
1040        Jun 2009 modif of pkg/exch2).
1041    o testing on baudelaire:
1042      - run 2 tests at a time: no significant slow down (since enough cpu) and
1043        get the full set of test done earlier
1044      - switch the ifort test to "-devel" ; run the OpenAD test everyday.
1045    o model/src/thermodynamics.F and routines called from it:
1046      - pkg/gmredi: gmredi_residual_flow.F (replacing gmredi_calc_uvflow.F &
1047        gmredi_calc_wflow.F) to update eulerian velocity (input) into residual
1048        velocity (outp) by adding bolus velocity.
1049      - model/src: calc_adv_flow.F (replacing calc_common_factors.F) to compute
1050        mass transport from velocity + lateral grid cell area
1051      - rename calc_gt.F to temp_integrate.F (includes call to TIMESTEP_TRACER)
1052      - rename calc_gs.F to salt_integrate.F (includes call to TIMESTEP_TRACER)
1053     in thermodynamics.F
1054      - remove k from thermodynamics.F and move it to temp_integrate.F
1055        salt_integrate.F and ptracers_integrate.F (now done inside the tracer
1056        loop).
1057      - compute locally (in thermodynamics.F) 3-D velocity field that is used to
1058        advect tracers; pass it as argument to GAD_ADVECTION, GAD_SOM_ADVECT,
1059        PTRACERS_ADVECTION, TEMP_INTEGRATE, SALT_INTEGRATE, PTRACERS_INTEGRATE,
1060        GAD_IMPLICIT_R and PTRACERS_IMPLICIT
1061      - update AD-output (TAF & OAD) of experiments: 1D_ocean_ice_column,
1062        global_ocean.90x40x15, tutorial_global_oce_biogeo and
1063        tutorial_tracer_adjsens (+ TLM output).
1064    o tools/OAD_support and (verification/*/) code_oad:
1065      - OAD_support/cb2mGetModules.csh: add PACKAGES_CONFIG.h in header file to
1066        module conversion ; remove unneeded CPP_EEOPTIONS.h.
1067      - code_oad/CPP_OPTIONS.h: remove PACKAGES_CONFIG.h and use a more standard
1068        version (closer to model/inc/CPP_OPTIONS.h).
1069    o model/src:
1070      - remove parameter "useOldFreezing" from PARAMS.h and push it to the
1071        retired list of parameters (routine FREEZE has been replace by surface
1072        freezing (10.yrs ago) and by pkg/frazil (interior freezing).
1073    o pkg/gmredi:
1074      - add option (GM_CALC_TRANSP_FROM_VEL) to compute transport directly from
1075        velocity (same scheme but affects machine truncation) for GM_AdvForm.
1076      - update output of FWD experiments: front_relax.bvp,
1077        global_ocean.90x40x15.dwnslp, global_ocean.cs32x15 and ideal_2D_oce.
1078    
1079    checkpoint64q (2013/11/17)
1080    o verification:
1081      - generate new output on baudelaire (gfortran, -ieee) for OpenAD experiments
1082        tutorial_global_oce_biogeo and global_ocean.90x40x15.
1083      - generate new output (growth & melt) for seaice_itd experiment after
1084        updating the input pickup_seaice files (previously wrong).
1085    o pkg/cost:
1086      - define a "final cost function" for each tile, and use GLOBAL_SUM_TILE_RL
1087        (instead of _GLOBAL_SUM_RL) to get the final cost from all procs & threads:
1088        o this fixes global-sum value if multi-threads (since GLOBAL_SUM_RL
1089          cannot be applied to var in common block).
1090        o allows to get results independent of tile-per-proc setting (if using
1091          slower GLOBAL_SUM_SEND_RECV option).
1092      - update accordingly: seaice_cost_final.F, shelfice_cost_final.F,
1093        thsice_cost_final.F and ecco_cost_final.F (this one affects lab_sea
1094        forward gradients: update output).
1095      - update */code_oad/externalDummies.F by adding dummy GLOBAL_SUM_TILE_RL
1096        S/R and, for most exp., also comment out GLOBAL_SUM_R8.
1097    o pkg/mom_common:
1098      - move to pkg/mom_common and model/src (previously in tutorial_deep_convection
1099        code) 2nd version of isotropic 3-D Smagorinsky code interface: strain and
1100        viscosity are locally declared in dynmics.F and pass as argument to CALC_GW;
1101        ensure that all field value that are used are set.
1102    o tutorial_deep_convection (smag3d):
1103      - add missing scaling in mom_calc_smag_3d.F;
1104      - set smag3D_coeff in input.smag3d such that results do not change.
1105    o pkg/dic:
1106      - change dic_cost.F to compute cost on each tile first and then apply
1107        GLOBAL_SUM_TILE_RL: this affects forward gradient of AD experiments
1108        tutorial_dic_adjoffline & tutorial_global_oce_biogeo; update output.
1109      - remove kLev argument and use GLOBAL_SUM_TILE_RL in tracer_meanarea.
1110    o eesupp/src & pkg/mdsio:
1111      - remove gather/scatter_vector.F (from eesupp) and mdsio_read/writevector.F
1112        (from pkg/mdsio) since they are no longer used for tape IO.
1113      - move simple C subroutine "setdir.c" from pkg/compon_communic to eesupp/src
1114        (+ keep a copy in pkg/atm_ocn_coupler).
1115    o verification/isomip:
1116      - split domain in 8 squared tiles (instead of just 2) for FWD, AD & OAD tests.
1117    o tools/build_options:
1118      - optfile linux_amd64_ifort11, fast (no ieee) case:
1119        to get a working restart for all experiments, add "-fp-model source"
1120        to FOPTIM (also remove "-opt-streaming-stores auto" <- this is the default).
1121    
1122    checkpoint64p (2013/10/20)
1123    o pkg/autodiff:
1124      - adread_adwrite.F: when type and length do not match ALLOW_AUTODIFF_WHTAPEIO
1125        criteria, return to simple (default) tape IO format.
1126    o pkg/mdsio (+ eesupp/src):
1127      - rewrite/simplify tape-IO S/R (new S/R MDS_READ/WRITE_TAPE replace
1128        previous MDSREAD/WRITEVECTOR) with 2 array argument from each type (R4/R8);
1129      - fix globalFile and singleCpuIO options using simpler global mapping.
1130      - new pairs of scatter/gather vector S/R (one for each type, generated from
1131        template) corresponding to simpler global mapping.
1132      - adread_write.F: switch to new S/R (but leave old calls commented) and write
1133        to globalFile when parameter globalFiles is set to True.
1134      - switch on useSingleCpuIO in AD experiments: global_ocean.90x40x15 & isomip.
1135    o pkg/autodiff:
1136      - adread_adwrite.F: add a hack for RS arrays (when RS=real*4);
1137        with ALLOW_AUTODIFF_WHTAPEIO defined, since corresponding (real*4) is
1138        missing, just add a STOP if array type do not match.
1139    o pkg/exf:
1140      - to allow to use seaice-fraction from pkg/exf in other pkgs than pkg/seaice:
1141         rename CPP option EXF_ALLOW_SEAICE_RELAX to EXF_SEAICE_FRACTION
1142         and rename array obsSIce to exf_iceFraction.
1143    o tutorial_deep_convection:
1144      - add 1rst version of isotropic 3-D Smagorinsky code (from Louis-Philippe),
1145        for now all in this exp. code dir.
1146      - add secondary test using Smag-3D viscosity (keep very low backgroud visc for
1147        testing) and flux-limter advection scheme for Temp. (no explicit diffusion).
1148    o eesupp/src:
1149      - added SINGLE_DISK_IO option because reading of parameter files on
1150        very large number of processors did not work with existing set-up
1151    
1152    checkpoint64o (2013/09/25)
1153    o pkg/atm_phys & atm_compon_interf:
1154      - allows for coupling of gray-atmosphere (atm_phys) with ocean.
1155    o tools/build_options:
1156      - switch from "-fPIC" to "-mcmodel=medium" in optfiles: linux_amd64_gfortran
1157        & linux_amd64_ifort11 and in linux_amd64_g77 & linux_amd64_open64 also
1158        remove CPP setting (was identical to genmake2 default).
1159    o pkg/gmredi & model/src: Some updating and work done on the residual model.
1160      - created new file model/src/calc_eddy_stress.F to calculate the eddy stress.
1161      - fixed up the calculation of the eddy stress and how it is added to the
1162        external forcing via taueddy_external_forcing.F
1163      - at the moment, it is very experimental and only works with the variable eddy
1164        diffusivity calculated in gmredi_k3d.F
1165    o pkg/seaice/seaice_check.F: add a check to catch the case of specifying
1166        lw/swfluxfile instead of lw/swdownfile in data.exf together with pkg/seaice
1167    o testreport (& tools/do_tst_2+2):
1168      - for MPI test, set default COMMAND to 'mpirun -v -np TR_NPROC ./{executable}'
1169    o tools/build_options: linux_amd64_gfortran & linux_amd64_ifort11:
1170      - remove CPP='cpp -traditional -P' (this is genmake2 default)
1171      - add switch (for big setups) to use 'medium' memory-model (but leave it
1172        commented out for now). Note: needed with FC 19 to compile big setups.
1173    o pkg/atm_compon_interf:
1174      - regroup per field origin (model & pkgs) the coupling storage routines
1175         (which accumalate in time each coupling field)
1176      - move bi,bj loops inside atm_store_my_data.F and store also wind-stress;
1177        update accordingly + simplify aim_do_physics.F
1178    
1179    checkpoint64n (2013/08/26)
1180    o pkg/bbl:
1181      - update formulation to reduce dispersion of tracer properties in bbl
1182      - replaced horizontal and vertical transport parameters with velocities
1183      - changes results for verification/global_with_exf.yearly
1184    o verification/halfpipe_streamice:
1185      - change to matrix construction; update both Fwd & AD output.
1186    o verification/tutorial_tracer_adjsens:
1187      - OpenAD test: switch to vector-invariant momentum since fluxform with
1188        rStar causes problems with OpenAD; update output.
1189    o tools:
1190      - genmake2: define a common prefix for all temp-file names ; move them
1191        to local /tmp disk (but would be easy to move them back);
1192      - xmakedepend: apply the same switch for temp-files.
1193    o pkg/offline:
1194      - changes for use with rStar (NLFS): assume that we continue to provide
1195        UVELMASS/hFacW_ini & VVELMASS/hFacS_ini (hFacWi,S_ini as written in grid
1196        output files) and apply r* scaling at each time-step (function of the time
1197        varying Eta field); use normal pickup files (needed for restart with NLFS).
1198    o adjoint with OpenAD:
1199      - move OpenAD-specific files from verification/OpenAD/code_oad_all to a new
1200        package openad.  This package has to be compiled for all runs with OpenAD
1201        instead of specifying code_oad_all as a modification directory.
1202      - link the fortran templates from tools/OAD_support to the build directory
1203        for preprocessing to avoid conflicts between different setups compiled
1204        simultaneously and simplify cleanup.
1205    o pkg/exf:
1206      - in exf_getforcing.F: comment out most of the EXCH calls (fields used by
1207        main model or other pkgs are exchanged in EXF_MAPFIELDS).
1208    o model/src:
1209      - do_stagger_fields_exchanges.F: skip EXCH calls when using pkg/offline
1210        (similar to do_fields_blocking_exchanges.F).
1211    o tools/genmake2:
1212      - remove TAF output src code just before calling staf (when not doing a fresh
1213        built, will stop if things go wrong with staf).
1214      - fix target "adobj" (left from TAF version-2 transition)
1215    o pkg/diagnostics:
1216      - add a parameter to track the status of pkg/diagnostics activation;
1217        this replace/extend the use of logical param "settingDiags" (to check
1218        when adding diag to the list) to also check any DIAGNOSTICS_[]FILL* call.
1219        New S/R to print error message and stop when pkgStatus is not right.
1220      - to try: add a warning when "data.diagnostics" exist but useDiagnostics=F.
1221    
1222    checkpoint64m (2013/08/13)
1223    o model/inc:
1224      - move FCORI_MACROS.h from PARAMS(_MACROS).h to GRID_MACROS.h (left from
1225        8 yrs ago modif when Coriolis arrays were moved from PARAMS.h to GRID.h)
1226    o pkg/kpp & aim_v23:
1227      - only call DIAGNOSTICS_FILL when useDiagnostics=TRUE.
1228    o pkg/seaice:
1229      - restore (last time on 2011/12/24) ability to compile pkg/seaice with
1230        undefined pkg/exf ALLOW_ATM_TEMP or ALLOW_RUNOFF CPP-options.
1231      - only call DIAGNOSTICS_FILL when useDiagnostics=TRUE.
1232    o eesupp/src:
1233      - fix check for overlap-size argument (myOLn.GT.MAX_OLY_EXCH)
1234        in exch1_rx[_ad].template (thanks to Francois Lefeuvre report).
1235    o switch to TAF version-2:
1236      - add flow directives to "freeze" naming convention for ad-routines that
1237        are used in I/O routines of adjoint state and associated common blocks
1238        that are used in adcommon.h (backward compatible with version-1)
1239      - update all ad-optfiles (in tools/adjoint_options + few local to some
1240        verification exp) to switch to latest TAF version (currently 2.5.5);
1241        merge "*_mpi" adoptfiles into the corresponding non-mpi (but commented
1242        out except for diva).
1243      - the major change with TAF version-2 is that both the differentiated
1244        routines and the forward routines (new) are returned as part of the TAF
1245        output source code. Update genmake2 accordingly.
1246      - new output for AD experiment tutorial_global_oce_biogeo (better AD gradient
1247        with version-2 when compared to TLM or FWD gradient); other experiments
1248        output show minor changes (machine truncation level); update the few AD &
1249        TLM output with 12 matching digits only (some prior to version-2 switch).
1250    
1251    checkpoint64l (2013/08/05)
1252    o model/src:
1253      - in dynamics.F, skip the call to CALC_VISCOSITY if momViscosity=F
1254      - main_do_loop.F: no longer includes additional (AUTODIFF) header files
1255        when using TAF but only if using OpenAD.
1256    o pkg/mom_common+fluxform+vecinv:
1257      - always set horiz. viscosity arrays to background value before calling
1258        MOM_CALC_VISC (in MOM_FLUXFORM & MOM_VECINV) and call S/R MOM_CALC_VISC
1259        only when using variable horiz. viscosity (useVariableVisc=T);
1260      - simplify mom_vecinv.F (only 1 block for momViscosity).
1261    o pkg/mom_common: variable horiz. viscosity in NH code
1262      - move horiz-viscosity 3-D arrays viscAh_W & viscA4_W (used in calc_gw.F)
1263        from model/inc/NH_VARS.h to pkg/mom_common/MOM_VISC.h
1264      - store in common block (in MOM_VISC.h) logical parameters: useHarmonicVisc,
1265        useBiharmonicVisc & useVariableVisc.
1266      - fix old bug (already in 1rst implementation of variable horizontal viscosity
1267        in calc_gw.F, version 1.27, 2006/06/20):
1268        horizontal bi-harmonic viscosity in gW was missing when wiscA4W=0
1269        even if variable bi-harmonic viscosity (e.g., viscA4Grid) was non-zero.
1270      - change background horiz viscosity in vertical momentum (gW) to always be
1271        viscAhW,viscA4W (instead of switching to viscAhD, viscA4D when using
1272        any type of variable viscosity, e.g., viscAh/4Grid)
1273      - change default value of viscAhW,viscA4W to viscAhD,viscA4D (instead of
1274        viscAh,viscA4) which default to viscAh,viscA4 :  this avoid missing
1275        horiz. viscosity in W eq when just setting viscAhD/Z,viscA4D/Z (since
1276        default viscAh,viscA4 is zero).
1277    o model/src:
1278      - extend length of drC & recip_drC from Nr to Nr+1.
1279    o Divided Adjoint (DIVA) with MPI:
1280      - genmake2: do not create local ./mpi_headers dir when no file to copy into.
1281      - remove option ALLOW_DIVIDED_ADJOINT_MPI (replaced by ALLOW_DIVIDED_ADJOINT
1282        and ALLOW_USE_MPI) from model/src code and from ECCO_CPPOPTIONS.h.
1283    
1284    checkpoint64k (2013/07/23)
1285    o tools/OAD_support:
1286      - avoid the need for file "oadtempflile" in insertTemplateDir.bash
1287        and remove it from genmake2.
1288    o tools/build_options:
1289      - remove MPI_HEADER_FILES_INC setting (no longer used) and comment out
1290        MPI_HEADER_FILES list (let genmake2 find the missing headers)
1291    o verification/halfpipe_streamice:
1292      - change to driving stress formulation; update both Fwd & AD output.
1293    o tools/genmake2 and Divided Adjoint with MPI:
1294      - remove default setting of MPIINCLUDEDIR from $MPIHOME (always been broken);
1295      - only create local ./mpi_headers dir if using MPI and MPIINCLUDEDIR is set;
1296      - add new variable (LOCAL_MPI_HEADERS, replace MPI_HEADER_FILES_INC) in
1297        Makefile, which is set by genmake2, and check which mpi-headers are needed.
1298        Note: need to update adjoint_options/adjoint_diva_mpi accordingly.
1299      - update target "CLEAN" (to also remove ./mpi_headers/ dir).
1300    o testreport:
1301      - changes for Divided Adjoint Run: when file "run_ADM_DIVA" is present,
1302        perform additional runs (number of additional runs is "add_DIVA_runs" taken
1303        from file run_ADM_DIVA ; should match "nchklev_3" in file "code_ad/tamc.h").
1304    o verification/lab_sea (AD test):
1305      - change to test Divided Adjoint Run in this set-up (both standard AD test
1306        and 2 secondary AD test: noseaice + noseaicedyn); drop the evp AD test.
1307    o pkg atm_ & ocn_compon_interf:
1308      - remove cpl_earlyExpImpCall=F option (was mainly a hack added for the old
1309        staggerTimeStep implementation) and disable (retired) corresponding
1310        parameter.
1311    o pkg/offline:
1312      - comment out unused field-array: ICEM, ConvectCount, hflx[01], icem[01];
1313      - add S/R OFFLINE_CHECK to print offline parameter summary
1314        and stop if loading a file that is not used;
1315      - enable to calculate GMRedi tensor, KPP mixing and convective index
1316        when the corresponding file(s) is/are not specified (but pkg is used).
1317      - comment out resetting of monitorFreq (to endTime) since it still useful
1318        for monitoring CFL numbers and checking offline fields.
1319    o OpenAD:
1320      - do not define OAD_DEBUG (in tools/adjoint_options/adjoint_oad) to get
1321        smaller standard output) and generate new (smaller) output (on baudelaire
1322        using gfortran with -ieee) for exp. tutorial_tracer_adjsens
1323    o model/src:
1324      - call EXTERNAL_FORCING_SURF outside bi,bj loops (in do_oceanic_phys.F),
1325        (where external_forcing_adjust was called) and change list of arguments;
1326      - merge external_forcing_adjust.F into external_forcing_surf.F
1327      - put surface relaxation of SST & SSS in new S/R (forcing_surf_relax.F)
1328        which also contains balancing surface relaxation (ALLOW_BALANCE_RELAX,
1329        previously in file "balance_relax.F", now removed); remove corresponding
1330        arrays in FFIELDS.h.
1331      - EXTERNAL_FORCING_SURF is now called when using pkg/offline; implement
1332        a hack for getting back surfaceForcingS (loaded from file) when using
1333        ALLOW_OLD_VIRTUALFLUX (pkg/dic, in DIC_OPTIONS.h) in offline set-up.
1334      - update output of AD test experiment global_ocean.cs32x15.seaice_dynmix
1335        (was getting only 11 digits for AD-grad, due to different truncation
1336         error in AD code).
1337    
1338    checkpoint64j (2013/07/04)
1339    o pkg/offline:
1340      - to enable the use of other features with pkg offline (e.g., obcs),
1341        also call S/R DO_OCEANIC_PHYS in offline run - more modifs to come.
1342      - comment out "allowFreezing" (now active) in 2 offline testing exp.
1343    o pkg/exf ALLOW_RUNOFTEMP
1344      - fix sign and make compatible with temp_EvPrRn .NE. UNSET_RL
1345      - ahdded RUNOFTEMP test to verification/global_ocean.cs32x15/input.seaice
1346      - changes verification/global_ocean.cs32x15/results/output.seaice.txt
1347    o pkg/atm_phys:
1348      - allows to add some damping on uVel,vVel (strength only function of k).
1349    o verification, ad-tests:
1350      - reduce length of the simulation for AD test: global_ocean.cs32x15.seaice,
1351        global_ocean_ebm and offline_exf_seaice.thsice.
1352    o verification/halfpipe_streamice:
1353      - found a bug in s/r pkg/streamice/streamice_advect_thickness which caused
1354        flux input boundary conditions to be ignored; a fix for this bug changed
1355        verification results for forward test.
1356      - add adjoint test.
1357    o pkg/ptracers:
1358      - allow to restart without SOM pickup (resetting SOM to zero).
1359    o pkg/gmredi:
1360      - New parameterisation for the calculation of K and (GM_PsiX,GM_PsiY) added.
1361      - It uses mixing length theory and suppression by steering level effects to
1362        calculate a diffusivity used in the Redi tensor (see Bates et al., submitted
1363        to JPO, for more details).
1364      - It also uses the diffusivity to calculate an eddy induced streamfunction
1365        based on a PV closure (rather than a buoyancy closure as in GM).
1366      - New files added to pkg/gmredi:
1367        gmredi_k3d.F calculates the diffusivity for the Redi tensor and the eddy
1368          induced overturning streamfunction (called from gmredi_calc_tensor)
1369        gmredi_calc_eigs.F calculates the eigenvalues and eigenvectors required
1370          for use in gmredi_k3d
1371        gmredi_calc_urms.F calculates the the rms eddy velocity used to calculate
1372          the eddy diffusivity
1373    
1374    checkpoint64i (2013/06/18)
1375    o pkg/cheapaml:
1376      - take src files from MITgcm_contrib/verification_other/offline_cheapaml/code
1377        that enable the use of seaice (pkg/thsice thermo & pkg/seaice dynamics)
1378        with pkg/cheapaml.
1379    o utils/python: add subpackage for cubed sphere function, first example is
1380        simple cs.pcol to plot 2D fields on a map
1381    o pkg/streamice:
1382      - This is a new package in MITgcm, which solves dynamic equations for ice
1383         sheets and ice streams
1384      - At the moment it is independent of atmosphere/ocean dynamics, or any
1385        other physical packages in MITgcm, even ShelfIce (although it is anticipat-
1386        ed that this will change)
1387      - There is a new verification exercise that tests it, halfpipe_streamice,
1388        evolves a 40x80 km ice stream/ice shelf (at coarse resolution) in a
1389        rectangular embayment
1390      - halfpipe_streamice is forward-only for now, will have TAF test soon
1391      - for questions, email dgoldber@mit.edu
1392    o pkg/thsice:
1393      - fix filling of snow-precip diagnostic (SIsnwPrc) (left from the removing
1394        of snowPrc from common bloc, on May 2nd, thsice_step_fwd.F revision 1.40);
1395      - remove diagnostics 'SI_FrcFx' ( now identical to 'SI_Fract' with new
1396         call sequence: ice-Thermo(thsice),ice-Dyn,ice-Advect );
1397      - allow precip from pkg/cheapaml to make snow over seaice.
1398    o pkg/cfc:
1399      - move in separated header file (CFC_ATMOS.h) time-serie arrays of Atmos CFC
1400      - remove atmos CFC 2-D arrays from common bloc (now local variables)
1401      - change some hard-coded constant to run time parameter for reading and
1402        and interpolating atmospheric CFC ; keep same default as previously.
1403      - more flexible reading of Atmos CFC (number of records no longer hard-coded)
1404      - put arguments in standard order: myTime, myIter, myThid
1405      - use standard S/R GET_PERIODIC_INTERVAL for time interpolation of
1406        atmospheric CFC ; fix for the case myIter < PTRACERS_iter0.
1407      - fix calculation of surf tendencys for partial-cell and/or Non-Lin Free-Surf
1408      - new routine to print summary of CFC params and check for consistency.
1409    o pkg/seaice: add uice/vice to the parameter list of s/r seaice_advdiff,
1410      similar to thsice_advdiff.
1411      Note that for the B-grid case the routine parameters uc/vc are overwritten.
1412    o pkg/cfc:
1413      - change time interpolation for atmospheric CFC-11 (now same as for CFC-12);
1414        update output (CFC-11) of experiment cfc_example and tutorial_cfc_offline.
1415      - fix interpolation of atmphspheric CFC between Sorthern and Northern
1416        hemisphere value.
1417    o pkg/seaice:
1418      - allow to use seaice dynamics without pkg/exf (e.g., using pkg/cheapaml)
1419    o pkg/seaice: add Adams-Bashforth2 time discretization for ice dynamics;
1420                  so far only for JFNK-solver, turn on with SEAICEuseAB2 = .TRUE.
1421      - requires an additional time level that is stored in the pickup
1422      - you can start with AB2 from a pickup without this time level with
1423        pickupStrictlyMatch = .false.
1424    
1425    checkpoint64h (2013/05/26)
1426    o pkg/cheapaml:
1427      - replace one ()**.5 with SQRT + use temp var "cdu = tau/Du" (coare3_flux);
1428        affect machine truncation (but exp cheapAML_box still pass with 13 digits).
1429      - consistent treatment of uWind,vWind location: assume everywhere in
1430        pkg/cheapaml that they are on C-grid (@ uVel,vVel location)
1431        (Note: was already the case for Tair,Qair advection);
1432        add option (INCONSISTENT_WIND_LOCATION) to recover old results.
1433      - compute diabatic forcing only in the interior (excluding overlap regions)
1434      - fill in array "Qsw" (for short-wave heating);
1435      - add diagnostic for precip ; fill-in diagnostics for cheapAML state vars
1436        before any update (consistent with MITgcm state var diagnostics);
1437      - cheapaml_fields_load.F & cheapaml_init_varia.F : only fill outer edges if
1438        non periodic ; + adjusted for uWind,vWind (C-grid).
1439    o pkg/seaice:
1440      - remove dependence of pkg/seaice versus pkg/exf (file: pkg/pkg_depend) and
1441        add explicitly pkg/exf in experiments that currently use pkg/seaice.
1442      - allows to compile pkg/seaice without pkg/exf.
1443    o tools/OAD_support:
1444      - use a local copy (ourRWCPinBd) to ensure index ourRWCP stays within bounds
1445        of array "ourStepOf" in function rvNextAction (revolve.F90).
1446    o pkg/aim_compon_interf renamed to pkg/atm_compon_interf
1447      - change pkg name (to be used with other atmospheric physics pkg)
1448        but by-pass CVS when making the new pkg so that we keep the CVS history.
1449    o pkg/offline:
1450      - call OFFLINE_FIELDS_LOAD from pkg/offline/offline_init_varia.F
1451        (previously called from pkg/dic_surfforcing_init.F)
1452    o model/src:
1453      - re-order sequence of calls within packages_init_variables.F, using
1454        standard order, except for:
1455         DIAGNOSTICS_INIT_VARIA and OFFLINE_INIT_VARIA (called @ the top),
1456         CTRL_MAP_INI and OBCS_INIT_VARIABLES (called @ the bottom)
1457    o new pkg: atm_phys
1458      - add entry point and source code (previously in contrib
1459          verification_other/atm_gray/code_gray/) for new pkg "atm_phys"
1460        (atmospheric physics pkg from P. O'Gorman and T. Schneider, JCl, 2008).
1461      - re-order sequence of calls within packages_readparms.F,
1462         packages_init_fixed.F and packages_write_pickup.F
1463        (but skip packages_init_variables.F because of TAF issues).
1464      - update contrib/*/atm_gray/ experiment.
1465    o pkg/seaice (ITD code):
1466      - simplify and fix the writing of pickup-files for ITD case
1467    o pkg/seaice (ITD code):
1468      - introduce floe size dependent lateral melt for ITD case;
1469      - cleaning (avoid division by zero, change to f77 syntax, remove tabs)
1470      - update seaice_itd experiment main output.
1471    o pkg/thsice:
1472      - remove snowPrc from common block THSICE_FLUX, in THSICE_VARS.h and
1473        declared it locally (without bi,bj) in thsice_main.F & aim_do_physics.F;
1474        changed accordingly pkg/atm2d.
1475    
1476    checkpoint64g (2013/05/01)
1477    o pkg/exf ALLOW_RUNOFTEMP
1478      - if defined,  river and glacier runoff temperature can be read-in from
1479        runoftempfile; runoftempfile needs to have same format as runofffile
1480    o pkg/thsice (& pkg/bulk_force):
1481      - In case Energy-Reference-Level (ERL) is used (temp_EvPrRn=0), account
1482        for energy content of Precip + RunOff & Evap (like with pkg/exf).
1483      - change computation domain to always be the interior (without overlap).
1484      - fix bug (wrong overlap) when using EXF and stressReduction > 0.
1485    o verification/tutorial_global_oce_biogeo:
1486      - add preliminary OpenAD setup (still has problems)
1487    o pkg/seaice:
1488      - turn some parameters for choosing the convergence criterion of
1489        the inexact Newton method (JFNK) into runtime parameters for convenience
1490      - clean up seaice_calc_viscosities.F: remove/retire two options for
1491        SEAICetaZmethod (1,2), introduce area weighting for method 3; this changes
1492        the results of lab_sea/input because a division has been replaced by
1493        a multiplication with the reciprocal (sumNorm)
1494      - modify offline_exf_seaice/input.dyn_jfnk/data.seaice to improve
1495        convergence of solver (changes results, of course), and to test some
1496        new features
1497    o model/src:
1498      - remove unused (since Aug 2006) S/R SET_WRITE_GLOBAL_PICKUP and its call.
1499      - remove unused forcing field "dQdT" and associated parameter "dQdTFile".
1500      - move forcing adjustment (balancing surface forcing) in specific S/R
1501        where might also be applied exchanges (if needed) to forcing arrays.
1502    o pkg/shelfice:
1503      - allow to specify the Ice-Shelf mass per unit area (instead of
1504        shelficeLoadAnomaly) and do the conversion from one to the other
1505      - move loading from file of shelficeLoadAnomaly from SHELFICE_INIT_VARIA
1506        to SHELFICE_INIT_FIXED: (a) avoid some TAF recompution issues and
1507        (b) will be loaded in time (before calling INI_PRESSURE) in case it is
1508        needed in phi0surf for initial pressure calculation when useDynP_inEos_Zc
1509      - update isomip experiment forward output (get machine truncation error
1510        from conversion shelficeLoadAnomaly -> shelficeMass -> shelficeLoadAnomaly)
1511    o verification/offline_exf_seaice:
1512      revise data.seaice in input.thermo and input_ad and update results accordingly
1513        HO = 0.2, SEAICE_areaLossFormula = 2,
1514        SEAICE_growMeltByConv = .TRUE.,
1515        SEAICE_doOpenWaterMelt = .TRUE.,
1516      Improve consistency with input.thsice and fix the spurious 500m ice corners
1517    o verification/global_ocean.cs32x15:
1518      - set Energy Reference Level to liq. water @ 0 degC: temp_EvPrRn=0.,
1519        in icedyn (thsice+seaice-dyn) test and update output.
1520    o verification/offline_exf_seaice:
1521      - adjust list of tested variables (with testreport) and update
1522        standard test output with better slection of monitored fields.
1523    o pkg/cd_code:
1524      - swtich off Adams-Bashforth on the 1rst iteration. Update output of
1525        experiment lab_sea.hb87
1526    o tools/genmake2:
1527      - change default makedepend from the system default to tools/xmakedepend:
1528        When no makedepend is specified, select tools/xmakedepend it the test pass,
1529        otherwise select the system default (if exist and pass the test) or
1530        try to build cyrus-makedepend ; stop if none of the 3 works.
1531    o pkg/exf & pkg/thsice:
1532      - In case Energy-Reference-Level (ERL) is used (temp_EvPrRn=0), account
1533        for energy content of Precip + RunOff & Evap. Assumes:
1534       1) Rain has same temp as Air.
1535       2) Snow has no heat capacity (consistent with seaice & thsice pkgs)
1536       3) Run-Off comes at the temp of surface water (with same Cp)
1537       4) Evap over ocean is released to the Atmos @ surf-temp (=SST); should be
1538        put directly into Latent Heat flux & should use water-vapor heat capacity.
1539       5) Evap over snow/seaice (pkg/thsice) assumes constant Lf+Lv (consistent
1540        with snow having no Cp) => water vapor is released to Atmos @ 0^oC (=ERL).
1541    o pkg/seaice: simplify the use of CPP flags in JFNK-related files
1542        (compile when SEAICE_ALLOW_JFNK is defined)
1543    o pkg/thsice:
1544      - fix oceanic flux diagnostics & timeave (left from new sequence of calls
1545        implementation): move THSICE_AVE call after the advection (called directly
1546        from thsice_do_advect.F).
1547    o verification/global_ocean.90x40x15 and OpenAD:
1548      New experiment for OpenAD is identical to the one in input_ad except that
1549        multiDimAdvection=.FALSE.,
1550      There is still an issue with this.
1551    o pkg/thsice:
1552      - account for ice velocity (ocean relative velocity) in turbulent heat flux
1553        at the base of the ice; update output of global_ocean.cs32x15 (icedyn)
1554        and offline_exf_seaice (main test).
1555    
1556    checkpoint64f (2013/03/31)
1557    o verification/OpenAD:
1558      - new (smaller, without OAD_DEBUG) output_oadm.txt generated using gfortran.
1559    o verification/isomip, pkg/shelfice and OpenAD:
1560      - add OpenAD setup to this exp and make shelfice package work with OpenAD
1561    o verification/tutorial_global_oce_biogeo:
1562      - update AD and TLM output after turning off ALLOW_FE (in DIC_OPTIONS.h)
1563    o verification/offline_exf_seaice:
1564      - replace adjoint experiment (now similar to fwd input.thermo/ setup).
1565    o verification/tutorial_tracer_adjsens, pkg/ptracers and OpenAD:
1566      - add OpenAD setup to this exp and make ptracers package work with OpenAD
1567    o pkg/seaice/seaice_evp.F:
1568       mask the asymmetric contribution of the ice-ocean stress (when
1569       the turningAngle is non-zero) over open water to avoid stripes
1570       in the EVP-solutions after many EVP-substeps. This does not change
1571       the verification experiment (because turningAngle=0 in that experiment),
1572       but will affect other EVP solutions with turningAngle.ne.0
1573    o verification, AD & TLM output:
1574      - new TAF version 2.3.10 (previously 2.3.8) add more parenthesis in multiple
1575        additions and multiplications which affect results at machine truncation
1576        level. Update few AD output (1D_ocean_ice_column, bottom_ctrl_5x5,
1577        lab_sea.noseaicedyn & offline_exf_seaice) and TLM output
1578        (1D_ocean_ice_column & tutorial_tracer_adjsens.som81) which had only 12
1579        digits of matching.
1580    o pkg/seaice:
1581       modify lsr-algorithm so that it vectorizes AND converges by using a
1582       "zebra" method: split vector loop into two with step size 2; this
1583       solves a general convergence problem for the JFNK solver on a vector
1584       computer. It has the potential to even improve convergence for
1585       non-vector machines, but it does change the results so it is turned
1586       off by default. To turn on define CPP-flags SEAICE_VECTORIZE_LSR and
1587       SEAICE_VECTORIZE_LSR_ZEBRA in SEAICE_OPTIONS.h
1588    
1589    checkpoint64e (2013/03/05)
1590    o pkg/ecco and several verification experiments:
1591       Remove special versions of the_model_main.F, the_main_loop.F, forward_step.F
1592       from ecco package, and revert to unified routine in model/src/
1593       Adjust verification experiments accordingly, especially gloal_oce_llc90
1594       Should conclude long-standing work by Gael to reconsile the_main_loop with
1595       ECCO and will enable OpenAD's revolve loop in ECCO setup.
1596    o pkg/generic_advdiff:
1597      - implement compressible flow method for multi-dim advection (similar to
1598        gad_som_advect.F); add new option "GAD_MULTIDIM_COMPRESSIBLE" (since
1599        TAF generates many recomputations) to use it; no yet coded with implicit
1600        vertical advection.
1601      - change experiment advect_cs (new output) and advect_xy (same output)
1602        to test compressible flow multi-dim advection.
1603    o pkg/generic_advdiff:
1604      - fix SOM advection for unusual cases (linear Free-Surf in r*, other
1605        cases where linear Free-Surf is not @ k=1, e.g., useShelfIce)
1606    o pkg/seaice:
1607      - fix bug in the no-slip implementation in seaice_calc_strainrates.F, this
1608        bug affects two verification experiments (lab_sea and lab_sea.hb87),
1609        recover old (wrong) results by setting noSlipFac = 2. in
1610        seaice_calc_strainrates.F;
1611      - add another averaging method for etaZ (etaZmethod=3), a mix of 2 and 0
1612      - add runtime parameter SEAICE_JFNKepsilon for that finite difference
1613        gradient in the Jacobian times vector operation (s/r seaice_jacvec)
1614      - fix line search in seaice_jfnk.F (s/r seaice_jfnk_update)
1615    o pkg/seaice: reorganize seaice_lsr.F to be able to reuse more code:
1616      - new subroutines seaice_lsr_tridiagu/v
1617      - introduce loop bounds i/jmin/max to be able to use a restricted
1618        additive Schwarz method, but not used for now.
1619      - rename SEAICE_CALC_LSR_COEFFS into SEAICE_LSR_CALC_COEFFS
1620      - use new subroutines seaice_lsr_tridiagu/v in s/r seaice_preconditioner
1621    o OpenAD support
1622       Reorganize S/R call for overall time-stepping loop to facilitate
1623       OpenAD revolve loop replacement
1624       (new S/R main_do_loop.F)
1625    o model/src:
1626      - add 3-D array 3rd dimension to argument list of S/R ADAMS_BASHFORTH2/3;
1627      - pkg/cheapaml: remove local S/R ADAMS2d and use instead standard S/R
1628        ADAMS_BASHFORTH2.
1629    o pkg/cheapaml:
1630      - add new parameter (default=F, same as before) to disable full domain
1631        (including land) periodicity in X & Y dir.
1632      - new S/R CHEAPAML_COPY_EDGES to copy relaxation field into edges of
1633        prognostics field ; merge the 2 S/R cycle_2d_tracer and timestep_2d_tracer
1634        into single S/R CHEAPAML_TIMESTEP.
1635    
1636    checkpoint64d (2013/02/17)
1637    o pkg/monitor (angular momentum):
1638      - do not add Eta contribution to the total AM if using rigid-lid;
1639      - correct for Adams-Bashforth in zonal-wind part (instead of in AM_eta).
1640      - horizontal discretisation: compute Zonal wind contribution separately for
1641        each component (instead of from cell centered averaged) and use the 4
1642        grid-cell corner averaged value of Omega*(R*cos_Phi)^2 in AM_eta part.
1643      - Check that AM is conserved with linear dynamics (momAdvection=F and linear
1644        FreeSurf) if using vectorInvariant momentum.
1645    o model/src (horizontal grid):
1646      - move initialisation of all horizontal grid arrays to null value
1647        from specific horizontal grid S/R to main S/R INI_GRID;
1648      - add 2 new arrays to project model C-grid velocity on to zonal direction
1649        (similar to AngleCosC & -AngleSinC but at U and V point location) and
1650        compute them in S/R CALC_GRID_ANGLES.
1651    o pkg/seaice: replace a hard coded parameter by a runtime parameter
1652        SEAICE_JFNK_tolIter
1653    o pkg/seaice: introduce a restricted additive Schwarz (RAS) method in
1654        preconditioner for JFNK (run LSR into the overlaps as far as possible,
1655        i.e OLx/y-2, but overwrite the solution in the overlaps)
1656      - extend loop range in seaice_calc_viscosity
1657      - add new parameters SEAICE_OLx/y (default = OLx/y-2)
1658      - add flexible loop ranges to seaice_preconditioner, seaice_calc_lsr_coeffs
1659      - slightly modify loops in tridiagonal solver lsr-preconditioner
1660      - by default remove the extra exchange in seaice_preconditioner with a
1661        replacement of an undocumented CPP flag by SEAICE_PRECOND_EXTRA_EXCHANGE
1662      - modify offline_exf_seaice so that old results without RAS are reproduced
1663        for output.dyn_jfnk.txt
1664      in seaice_fgmres.F (unrelated to RAS)
1665      - add a cpp-flag option for a re-ordered mapping (potentially more
1666        efficient), but because this changes the results, turn it off by
1667        default
1668      - replace the save statement by local common blocks
1669    o utils/matlab:
1670      - fix tile-offset in rdmnc.m when output was produced using EXCH2.
1671      - update cs_grid/bk_line scripts to use load_grid.m (in utils/matlab)
1672        instead of local script "load_cs.m".
1673    o pkg/seaice:
1674      - fix a serious bug in seaice_fgmres.F, s/r seaice_scalprod, connected
1675        to the scalarProductMetric and the unrolling. By chance this does not
1676        change the verification experiment, because of the particular domain
1677        decomposition
1678    o pkg/diagnostics:
1679      - change default missing_value from UNSET_RL to -999.
1680    o pkg/layers: improve vectorization of layers_fluxcalc.F
1681      - step 1: split loops, make TatU/V 2D arrays. This alone reduces the cpu
1682        time spent in this routine by more than a factor of 3 on an NEC-SX8
1683      - step 2: replace search algorithm by a bisection algorithm found in
1684        Press et al. Numerical Recipes in Fortran. This algorithm can be
1685        vectorized and finds the correct bin in approx. log2(Nlayers) steps.
1686        For now, use this algorithm only for TARGET_NEC_SX defined.
1687      - moved the search algorithm into a separate subroutine, that is kept
1688        within the same file for automatic inlining.
1689      - modified catching potential errors
1690    o pkg/ecco:
1691      - add compile switches ALLOW_SHALLOW_ALTIMETRY and ALLOW_HIGHLAT_ALTIMETRY.
1692    o model/src, pkg/autodiff, pkg/ctrl, pkg/grdchk :
1693      - modifications for ALLOW_GENTIM2D_CONTROL
1694      -- forward_step.F, the_main_loop.F : pass options and arrays for adjoint tapes.
1695      -- load_fields_driver.F : add call to CTRL_MAP_GENTIM2D( myTime, myIter, myThid )
1696      -- add xx_gentim2d0/1 in ctrl_ad_check_lev1_dir.h checkpoint_lev1_directives.h etc
1697      -- use ctrl_swapffields.F (new) instead of exf_SwapFFields.F in ctrl_get_gen.F
1698    o model/src:
1699      - account for moist thermodynamics in (dry) potential temperature equation;
1700        update results of experiments: aim.5l_cs (x2), fizhi-cs (std + aqualev)
1701        and cpl_aim+ocn.
1702      - also switch to standard compiler (gfortran, was using ifort previously)
1703        for fizhi-cs experiments reference output.
1704    o pkg/ctrl:
1705      - 1st step toward generic time-varying control variable (2D) via CPP option
1706        ALLOW_GENTIM2D_CONTROL
1707      - note new namelist ctrl_nml_genarr in data.ctrl
1708    o verification/global_ocean.cs32x15:
1709      - switch off OLD_THSICE_CALL_SEQUENCE (both forward and AD code) to use new
1710        thsice calling sequence and update "output.icedyn.txt" output file.
1711    o pkg/ptracers:
1712      - from Ryan A.: code to allow to restart a tracer at regular time interval
1713        specifying a reset frequency and a reset-phase (for each tracers).
1714    o pkg/thsice:
1715      - implement new sequence of calls for thsice+seaice:
1716          previously:   ice-Dyn,ice-Advect,ice-Thermo(thsice)
1717          new sequence: ice-Thermo(thsice),ice-Dyn,ice-Advect
1718      - allows (with temporary CPP option "#define OLD_THSICE_CALL_SEQUENCE"
1719        in CPP_OPTIONS.h) to recover old sequence;
1720      - update diagnostics for Intermediate State thsice diagnostics: now filled
1721        just before advection (instead of just after advection in old sequence);
1722      - update output of experiment offline_exf_seaice (standard test);
1723      - in global_ocean.cs32x15 exp., postpone output.icedyn.txt update
1724        by setting #define OLD_THSICE_CALL_SEQUENCE in CPP_OPTIONS.h
1725    o pkg/aim_v23:
1726      - use tiled array for aim_CO2 and surface wind speed for export to coupler;
1727      - use standard pkg/mdsio routines to read & write CO2 pickup file;
1728      - in-line S/R AIM_AIM2DYN_EXCHANGES in aim_do_physics.F;
1729      - Implement new sequence of calls for seaice advection (with thsice and
1730        seaice diffusion): do ice advection after ice-Thermodynamic (previously
1731        was done before); change aim_do_physics.F (split the bi,bj loops block);
1732      - use same CPP option (OLD_THSICE_CALL_SEQUENCE) to recover old sequence;
1733    o pkg/thsice:
1734      - add a missing EXCH of sIceLoad in thsice_main.F (ocean set-up) for the case
1735        where just seaice diffusion is used without seaice-dynamics.
1736    
1737    checkpoint64c (2013/01/18)
1738    o pkg/seaice:
1739      - add a parameter JFNKres_tFac that can replace JFNKres_t
1740        (= JFNKres_tFac*JFNKresidual before JFNK solver)
1741      - add a line search option to the JFNK solver
1742      - move update of u/vIce and computation of initial residual into a separate
1743        routine (same file); makes the code a little easier to read (?)
1744      - the line search requires computation of the residual and for some reason
1745        I cannot do the update of u/vIce at the beginning of the Newton loop
1746        without changing the results, so we move computation of the new residual
1747        also to the end of the Newton loop, even without the line search
1748    o pkg/mdsio:
1749      - write missing value (corresponding to undefined array value) to meta files;
1750        skip this if missing value is one (UNSET_RL would be a better value for the
1751        case of undefined missing value but it's current the default missing-value);
1752        Also update mdsio_read_meta.F (reading timeInterval & missing-value).
1753    o pkg/exf & thsice:
1754      - for diagnostics purpose, fill-up and update Qsw array (+ fill the
1755        diagnostics) even when SHORTWAVE_HEATING is #undef;
1756    o verification/cfc_example:
1757      - turn on pkg/layers with pkg/diagnostics (to test pkg/layers and to
1758        illustrate how to use it).
1759    o verification/offline_exf_seaice:
1760      in input: add SEAICErestoreUnderIce=.TRUE., and reduce size of forcing
1761        files to only one time-record.
1762      in input.thermo: narrow the 2 bands of low initial ice-concentration near
1763        N & S edges; switch on SEAICErestoreUnderIce=T; use pkg/diagnostics for
1764        snapshot output; same mcPheePiston value as in thsice with
1765        surf-current=0.2m/s.
1766      in input.thsice: similar set-up as in input.thermo (channel with same seaice
1767        initial conditions).
1768    o verification/cfc_example:
1769      - update file "data" with more standard choice (default rotationPeriod,
1770        exactConserv=T, reduce ivdc_kappa to 10, remove multiDimAdvection=F,
1771        set deltaTFreeSurf to deltaTtracer) and update the output.
1772    o pkg/layers:
1773      - fix bolus part so that it compiles with #undef GM_BOLUS_ADVEC;
1774      - ensure that "layers_bolus" is switched to False when useGMRedi=False.
1775    o verification/offline_exf_seaice:
1776      - set all {field}period to zero for constant-in-time forcing (not tested
1777        anywhere else).
1778    o verification/offline_exf_seaice:
1779      - dyn_lsr  : use pkg/seaice S/R (instead of pkg/thsice) to advect sea-ice;
1780      - dyn_jfnk : use pkg/thsice S/R (instead of pkg/seaice) to advect sea-ice.
1781    o model/src:
1782      - implement Finite-Volume method for (hydrostatic) presure gradient
1783        from S.-J. Lin (QJRMS 1997), for atmosphere using sigma-coordinate.
1784    o pkg/seaice: implement EVP* by Lemieux et al. (2012).
1785      - In order to be compatible with the default EVP code, this requires changing
1786        the EVP code around a little; and because any small change immediately
1787        breaks the lab_sea.hb87 verification experiment, the reference output is
1788        updated two times (each time the remaining aggrement was only 2 digits):
1789        - after replacing 1/dt by 1*recip_dt with a precomputed recip_dt
1790        - after replacing 1/(1+0.5*dt/tau) by a/(a+1), with a=2*tau/dt
1791        The adjoint test lab_sea.evp also needed to be updated.
1792      - Turn on EVP* by setting SEAICE_deltaTevp as before, and setting
1793        SEAICEuseEVPstar=.true.; for EVP* SEAICE_deltaTevp does not need to be
1794        a factor of SEAICE_deltaTdyn, and you can set the number of EVP steps
1795        explicitly with SEAICEnEVPstarSteps (thereby overriding the default of
1796        INT(SEAICE_deltaTdyn/SEAICE_deltaTevp)). Controlling EVP* is deliberately
1797        kept obscure, because I need to test it a little more.
1798    o pkg/cheapaml:
1799      - fix few incorrect type (_RL/_RS) in subroutine calls.
1800    o pkg/seaice:
1801      - new S/R SEAICE_MAP_RS2VEC (similar to SEAICE_MAP2VEC) to map _RS arrays
1802        to _RL vector; this fixes JFNK code when compiling with "-use_r4" option.
1803    o model/src:
1804      - add a warning if using select_rStar=2 with nonlinFreeSurf <> 4;
1805        change (in input_ad*/data) select_rStar from 2 to 1 for AD verification
1806        experiments global_ocean.cs32x15 & tutorial_tracer_adjsens (+ update output)
1807    o pkg/cheapaml:
1808      - replace "273.1 _d 0" by celsius2K in pkg/cheapaml/cheapaml.F and
1809        update output of experiment cheapAML_box.
1810      - store in CHEAPAML.h coeffs ssq[0:2] for saturation specific humidity,
1811        and set them only in one place (cheapaml_readparms.F).
1812      - replace "273.16 _d 0" by celsius2K & replace "3.14159 _d 0" by constant "PI"
1813      - remove re-setting of main-model parameter "celsius2K" (in cheapaml_readparms)
1814        and re-setting of cheapAML params "lath" & "p0" (in cheapaml_init_varia).
1815    o model/src/the_main_loop.F:
1816      - fix revision 129 : need both ALLOW_ECCO and ALLOW_ECCO_EVOLUTION.
1817    o pkg/seaice:
1818      - remove legacy branch code.
1819      - retire SEAICE_GROWTH_LEGACY and SEAICE_CAP_HEFF accordingly.
1820    o verification/*/code*/SEAICE_OPTIONS.h:
1821      - remove documentation for retired CPP flags (SEAICE_GROWTH_LEGACY,
1822        SEAICE_CAP_HEFF).
1823  o pkg/cheapaml:  o pkg/cheapaml:
1824    - use standard routine (S/R GET_PERIODIC_INTERVAL) to decide when it is time    - use standard routine (S/R GET_PERIODIC_INTERVAL) to decide when it is time
1825      to load new forcing fields.      to load new forcing fields.

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