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revision 1.1711 by jmc, Thu Aug 9 20:36:11 2012 UTC revision 1.2118 by jmc, Fri Jan 23 14:51:49 2015 UTC
# Line 4  $Name$ Line 4  $Name$
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    checkpoint65i (2015/01/23)
8    o model/src:
9      - change units of frictionHeating field from W to W/m^2
10      - fix bug in frictional heating from stratospheric drag in
11        S/R ATM_PHYS_TENDENCY_APPLY_V
12      - with synchronous time-stepping: move resetting to zero of frictionHeating
13        field from load_fields_driver.F to thermodynamics.F ;
14      - add diagnostics for frictional heating.
15    o model/src & gmredi K3D:
16      - add frictionHeating field to pickup-files (for synchronous time-stepping)
17      - move ALLOW_EDDYPSI block out of DYNVARS.h and merge it into FFIELDS.h
18      - rename uMean,vMean --> uEulerMean,vEulerMean (+ change diagnostics name
19        and name in pickup file).
20      - fix arguments of few DIAGNOSTICS_FILL calls in gmredi_k3d.F
21    o model/src:
22      - move (from ini_forcing.F) initialisation of all arrays in header file
23        FFIELDS.h into new S/R ini_ffields.F ; this fix broken restart
24        (since Nov 2012) with option selectAddFluid=1.
25    o pkg/shelfice:
26      - change units (+ document) of newly added field "shelfIceMassDynTendency"
27      - upgrade from _RS to _RL shelficeMass & shelficeLoadAnomaly arrays.
28    o pkg/obcs: re-organize obcs_calc_stevens.F to prepare for passive tracers
29    o pkg/seaice: two new runtime parameters:
30      - SEAICE_cStar replaces the hard wired "20" in the strength formulation,
31        long overdue
32      - SEAICE_tensilFac: preparation for Koenig-Beatty+Holland (2012)
33        parameterization of tensil stress for fast ice (does not do anything yet)
34    o pkg/seaice/seaice_check.F: left over from restricted addtive Schwarz method
35        for LSR: move checking overlaps out of JFNK-if-block
36    o pkg/atm_phys:
37      - move copy of grid and dynamical fields out of atm_phys_driver.F into
38        new S/R ATM_PHYS_DYN2PHYS.
39      - fix level height for Linear Free-Surf case (to be consistent with
40        fixed-in-time pressure levels).
41    o pkg/mom_common (bottomdrag):
42      - average bottomDragFld (ALLOW_BOTTOMDRAG_CONTROL) from grid-cell center
43        to correct location (U & V point) in S/R MOM_U/V_BOTTOMDRAG;
44        update output (adm & tlm) of experiment global_ocean.90x40x15.bottomdrag.
45    o pkg/shelfice (u/v_drag):
46      - add one argument (the other velocity component) to S/R SHELFICE_U/V_DRAG;
47      - use SHELFICEDragLinear & SHELFICEDragQuadratic in shelfice_v_drag.F
48        (now similar to shelfice_u_drag.F)
49      - remove condition on bottomDragTerms when calling SHELFICE_U/V_DRAG
50        from mom_vecinv.F (similar to mom_fluxform calls).
51    o pkg/mom_common (bottomdrag):
52      - add one argument (the other velocity component) to S/R MOM_U/V_BOTTOMDRAG;
53      - add options for alternative discretisation of velocity norm in quadratic
54        bottom drag: averaging of grid-cell-center KE to U.point and V.point
55        (selectBotDragQuadr=0, original code) can produce noisy patterns; this
56        improves when averaging only the other component (e.g. vVel for U bottom
57        drag) using wet-point method (selectBotDragQuadr=2) or not (=1).
58      - add options (bottomVisc_pCell) to account for partial-cell in bottom
59        friction (no-slip BC) thus getting the true distance from the bottom;
60        off by default since this also reduces model stability (explicit bottom
61        friction). Changes produce different machine truncation with linear-drag
62        + no-slip BC: update output of experiments exp4.stevens (10 digits) and
63        front_relax (bvp & mxl, 10 & 11 digits).
64    o model/src & mom pkgs:
65      - add one more level to vertical viscosity local arrays (Nr+1, previously Nr)
66        since no-slip bottom BC uses viscosity @ k+1 to update velocity @ level k
67      - for now and until vertical mixing scheme are updated to fill up level Nr+1,
68        just copy level Nr value to level Nr+1.
69    o doc:
70      - add notes form Abhisek Chakraborty on how to close Heat & Salt budgets.
71    o pkg/streamice:
72      - shelfice_init_varia.F, shelfice_init_fixed.F, shelfice_readparms.F,
73        SHELFICE.h: move array shelficemass to init_varia, initialise
74        from array shelficemassinit, which is set in init_fixed and
75        has option to be set from file; introduce array
76        shelficeMassDynTend array, set thru file in init_fixed
77      - NEW FILE: shelfice_step_icemass.F: update shelficemass from either
78        shelfIceFreshWaterFlux and shelficeMassDynTend or H_streamice in
79        pkg/streamice
80      - shelfice_thermodynamics.F: call shelfice_step_icemass if
81        SHELFICEMassStepping = .true.
82      - shelfice_ad_diff.list: add new subroutine shelfice_step_icemass.f
83    
84    checkpoint65h (2014/12/17)
85    o verification/global_ocean.90x40x15, global_ocean_ebm:
86      - update to generic controls.
87    o pkg/ctrl:
88      - ctrl_map_ini_genarr.F: test for igen>0
89      - ctrl_init_variables.F: add call to CTRL_MAP_INI_GENTIM2D.
90      - move gentim2d part of ctrl_map_ini_genarr.F to
91        new separate routine : ctrl_map_ini_gentim2d.F
92      - ctrl_cost_driver.F,ctrl_init.F ctrl_map_ini_genarr.F:
93        add time variable weights and cyclic controls (time mean,
94        seasonal cycle, etc) capabilities to gentim2d
95    o pkg/ecco:
96      - move reading of error, conversion to weights from
97        ecco_cost_init_fixed.F to ecco_toolbox.F (ecco_readwei)
98    o global_oce_llc90, cs32:
99      - activte sbo.
100      - CTRL_SIZE.h : add maxCtrlProc.
101      - activate the new genctrl capabilities.
102      - update following reorganization of global_oce_input_fields.tar.gz  
103    o pkg/ctrl/ctrl_ad_diff.list:
104      - add missing ctrl_init_rec.f
105    o tools/OAD_support/keepOriginal:
106      - add ctrl_init_rec.F
107    o model/src/the_main_loop.F, pkg/ctrl/ctrl_map_ini_genarr.F:
108      - avoid recomputations of xx_gentim2d_dummy.
109    o momentum diagnostics:
110      - move filling of diagnostics Um_Diss & Vm_Diss from mom_fluxform.F and
111        mom_vecinv.F to timestep.F (to include Smag-3D contribution).
112    o pkg/seaice/seaice_lsr.F:
113      - fix computation of BU/BV, make sure they are non-zero, only necessary
114        for cubed sphere exchanges and SEAICE_OLx/y>0.
115        This makes calling s/r fill_cs_corner_rl obsolete (removed).
116    o verification/global_ocean.cs32x15/input.seaice
117      - add test for strong implicit coupling and restricted addtive Schwarz
118        methods for LSR
119      - update results/output.seaice.txt
120    o verification/tutorial_global_oce_biogeo:
121      - AD & OAD set-up: switch off ALLOW_OLD_VIRTUALFLUX (like in fwd set-up)
122        and set PTRACERS_EvPrRn(1,2) to zero (for DIC & ALK);
123        update output_adm,_oadm,_tlm.txt
124    o pkg/dic:
125      - change default to "#undef ALLOW_OLD_VIRTUALFLUX" in DIC_OPTIONS.h
126      - add a stop when ALLOW_OLD_VIRTUALFLUX is defined and PTRACERS_EvPrRn
127        for tracer 1 & 2 is set (to avoid double counting of dilution effect).
128    o verification/tutorial_global_oce_biogeo:
129      - AD & OAD set-up: do not set PTRACERS_EvPrRn for tracer 1 & 2 since
130        dilution is already added by pkg/dic ALLOW_OLD_VIRTUALFLUX ;
131        update output_adm,_oadm,_tlm.txt
132    o eesupp/src:
133      - add fill_cs_corner_rl.F (_RL-copy of fill_cs_corner_rs.F)
134        and call it in seaice_lsr when using nonzero SEAICE_OLx/y
135    o pkg/seaice: introduce strongly implicit coupling, intended for stabilizing
136      LSR (following Hutchings et al. 2004)
137      - introduce zetaZ as a global variable (requires adjustments in
138        seaice_evp.F and seaice_jfnk.F) and compute analoguously to etaZ
139        in seaice_calc_viscosities.F
140      - new flag SEAICEuseStrImpCpl (default off)
141      - add new terms zetaZ*du/dy and zetaZ*dv/dx on both sides of the
142        momentum equations
143      - JFNK-solver (preconditioner) adjusted to allow using this method
144        (where it does not have any positive effect)
145    o pkg/seaice
146      - add overlap for restrictive additive Schwartz method also to LSR, but
147        turn it off by default (because it only seems to work for non-cubed
148        sphere/llc topologies)
149    o pkg/autodiff
150      - add extra exchanges in addummy_in_steppging also for mnc output
151    o pkg/seaice:
152      - add extra exchanges before dumping adjoint fields in seaice_ad_dump.F
153        to avoid stripes in the adjoint output (similar to addummy_in_stepping.F)
154    o pkg/obcs:
155      - add option to specify domain-connected piece Id along OB though files
156        (for now, only used to diagnose PhiVel; default =1 -> global correction)
157      - modify obcs_diag_balance.F to process each connected-part separately;
158        exclude OB where Id = 0 but keep the full divergence there (-> constant
159        Psi along this portion of OB and all inflow derived from grad(Phi))
160      - add example of OB-conect files in verification/so_box_biogeo/input.
161    o pkg/diagnostics:
162      - improve treatment of Open-Boundaries in Velocity-Potential calculation:
163      a) use non zero matrix element across OB and solve for Phi 1 grid point
164         outside OB (i.e, where tracer OBCS are applied).
165      b) global imbalance of inFlow/outFlow across OB: instead of modifying
166         velocity across OB, spread it uniformly along the OB in the RHS.
167    
168    checkpoint65g (2014/11/19)
169    o pkg/diagnostcis:
170      - add preconditioner off-diagonal factor (diagCG_pcOffDFac) as run-time param
171    o pkg/my82,pp81,kl10:
172      - fix ALLOW_3D_DIFFKR implementation (previously had no effect): use 3-D
173        field diffKr as background diffusivity to set minimum diffusivity value.
174    o pkg/seaice:
175      - add new parameter SEAICEuseEVPrev (for revisited EVP by
176        Bouillon et al 2013)
177      - add SEAICE_evpAlpha/Beta to namelist
178      - modify seaice_evp code to able to use SEAICEuseEVPrev. These changes
179        involve trivial re-ordering of divisions/multiplications that should not
180        have any effects, but ... they do change the results of lab_sea.hb87 so
181        that only 2 digits of agreement remain, in line with the general
182        instability/fragility of the evp-code. For now, I do not care and just
183        update the verification experiment
184    o pkg/ctrl : add generic pre-processing (xx_genarr2d_preproc etc)
185      - remove xx_genarr2d_numsmooth etc
186      - use xx_genarr2d_preproc etc instead
187      - carry out smooth_correl2D at initialization stage rather than during
188        time stepping.
189      - get smoothOpNb from xx_gentim2d_preproc
190    o global_oce_cs32 :
191      - add test of generic ecco capabilities.
192    o pkg/exf/exf_getsurfacefluxes.F :
193      - add to tmpUE/tmpVN rather than re-initializing them (conventional behavior).
194    o pkg/ctrl,ecco :
195      - omit un-necessary arguments to ctrl_cost_gen.F unless ECCO_CTRL_DEPRECATED
196        is defined.
197    o pkg/seaice: add diagnostics for Delta (deformation parameter)
198    o model/src:
199      - when ALLOW_3D_DIFFKR is defined, add a Warning if any of the vertical
200        diffusivity (background) is specified but ignored.
201    o verification:
202      - in testreport, convert hostname to lower case for default output dir name
203    o model, pkg : add useCTRL, useECCO parameters (on/off run time switch).
204    o pkg/dic: add modifications from Hajoon:
205      - add iron sedimentation flux function of the flux of PO4 out of bottom layer
206      - light attenuation: add self-shading effect by climatological Chlorophyll
207        (read from file).
208    o pkg/seaice/seaice_preconditioner.F : fix cpp flags, so that code also
209        compiles when SEAICE_ALLOW_DYNAMICS is undefined
210    o global_oce_llc90,cs32 : ecco_v4 verification exps now use separate
211        AUTODIFF_OPTIONS.h, CTRL_OPTIONS.h, ECCO_OPTIONS.h rather than
212        ECCO_CPPOPTIONS.h (i.e. replacing the deprecated, circumvoluted,
213        approach where CPP_OPTIONS.h includes an omnipotent
214        ECCO_CPPOPTIONS.h that superseeds pkgs '_OPTIONS.h').
215    o pkg/ctrl/ctrl_map_ini_genarr.F : include GMREDI_OPTIONS.h where
216        ALLOW_3D_KAPGM, ALLOW_3D_KAPREDI (to be added later) belong.
217    o pkg/seaice/SEAICE_SIZE.h : replace ALLOW_AUTODIFF_TAMC with ALLOW_AUTODIFF
218        to avoid needing AUTODIFF_OPTIONS.h anytime SEAICE_SIZE.h is included
219        (it seems that THSICE_SIZE.h, PTRACERS_SIZE.h have the same issue...)
220    o model/src, pkg/smooth, profiles, salt_plume, seaice, exf, ecco, ctrl :
221      add ECCO_OPTIONS.h, AUTODIFF_OPTIONS.h, CTRL_OPTIONS.h when needed
222      - ECCO_OPTIONS.h is needed when including ecco_cost.h, ecco.h
223      - AUTODIFF_OPTIONS.h is needed when including tamc.h, tamc_keys.h
224      - CTRL_OPTIONS.h is needed when including ctrl.h, optim.h, etc
225    o pkg/ctrl,ecco,exf :
226      - remove variables associated with NON-generic costs,
227        unless ECCO_CTRL_DEPRECATED is defined.
228      - remove NON-generic NON-obcs controls,
229        unless ECCO_CTRL_DEPRECATED is defined.
230    o pkg/ctrl : added ctrl_local_params.h
231    o pkg/ecco : added ecco_local_params.h
232    o verification : added ECCO_CTRL_DEPRECATED to most as and oad
233        experiments, which will progressively be removed once the
234        experiments are revised to use only generic controls/costs.
235    
236    checkpoint65f (2014/10/13)
237    o pkg/ctrl, ecco, seaice : minor changes in headers
238    o global_oce_llc90,cs32 : ecco_v4 verification exps now test generic
239        cost function and control capabilities added since checkpoint65c.
240    o pkg/ctrl: regroup all obcs ctrl variables in CTRL_OBCS.h.
241    o pkg/ecco: increase modularity and improve logic
242      - ecco_toolbox.F (new) : basic operations that are often used,
243        including ecco_zero, ecco_cp, ecco_cprsrl, ecco_diffmsk,
244        ecco_addcost, ecco_add, ecco_div, ecco_readbar.
245      - cost_gencal.F (new) : determine filnames and records.
246      - cost_genread.F, cost_generic.F : condense code using ecco_toolbox.
247      - cost_generic.F : use spzeroloc rather than hard-coded -9999,
248        and exploit the above functions leading to more compact code.
249      - cost_genread.F : rm un-necessary arguments, re-arrange args order.
250      - ecco_check.F, ecco_readparms.F : bring logic up to date (using_tpj,
251        using_ers, using_gfo, using_mdt is now only defined within gencost)
252    o pkg/ecco: extend generic cost capabilities
253      - pkg/ecco : added 3D gencost (ALLOW_GENCOST3D), added gencost
254        capabilities via gencost_preproc (+ _c,_i,_r related params),
255        gencost_posproc (+ _c,_i,_r related params), gencost_nrecperiod,
256        gencost_outputlevel arguments to cost_generic
257      - pkg/ecco/cost_genread.F (new) : interface between cost_generic
258        and active_read, making room for gencost_preproc to take effect.
259        Added preproc code ('climmon') to replace GENERIC_BAR_MONTH.
260      - pkg/ecco/cost_generic.F :
261        compute and store misfit maks*(model-data) in localdif that is
262        then used in cost and for output, output misfit if outlev.GT.0
263      - pkg/ecco/cost_averagesfields.F : depend on gencost_barskip
264        rather gencost_barfile for deciding whether to write barfile
265      - pkg/ecco/ecco_cost_driver.F : extract call to cost_profiles from cost_hyd
266      - pkg/ecco/ecco_cost_init_fixed.F : extract gencost weights from
267        ecco_cost_weights, re-activate ecco_summary, determine gencost_barskip
268      - pkg/ecco/ecco_summary.F : report gencost variables
269      - pkg/ecco/cost_gencost_customize.F : treat case of scatterometer costs
270    o pkg/sea/SEAICE_OPTIONS.h : add ALLOW_COST_ICE, ALLOW_SEAICE_COST_SMR_AREA
271    o pkg/ecco: internal re-organization
272      - resolve un-necessary dependancies within pkg/ecco and to pkg/ctrl
273        (rm includes of optim.h and ctrl.h, replace optimcycle with eccoiter,
274        mv relevant variables definition from ecco_cost.h to ecco.h,
275        make sure gencost routines only include ecco.h)
276      - throughout : add missing CCP switches, rm unused variables,
277        and rm un-necessary CPP switches
278      - throughout gencost routines : replace modelstartdate with
279        gencost_startdate when needed
280      - cost_bp_read.F : use arguments, instead of common blocs
281        so that it can be used also by (new) cost_gencost_bpv4.F
282      - ecco_init_varia.F : initialize RHOsumGlob_0, VOLsumGlob_0
283      - ecco_phys.F : compute etanFull
284      - ecco_readparms.F : rename using_topex as using_tpj, add
285        bpv4-grace to gencost list, initialize added parameters
286      - ecco_summary.F : include SIZE.h needed for augmented ecco.h
287    
288    checkpoint65e (2014/09/28)
289    o pkg/obcs:
290      - replaced the just-added CPP options with run-time variables
291        (see pkg/obcs/OBCS_PARAMS.h for details)
292    o pkg/obcs:
293      - add additional CPP options for sponge boundary layers
294        (see pkg/obcs/OBCS_OPTIONS.h for details)
295    o pkg/atm_phys:
296      - implement simple (obliquity only, assuming circular planet orbit)
297        seasonal cycle for incoming insolation ; used when run-time parameter
298        "select_incSW" is set to 1 ; by default (=0), uses old unchanged formula.
299    o pkg/exf, pkg/ecco, pkg/ctrl:
300      - add ctrlUseGen and .NOT.ctrlUseGen exclusive brackets
301      - activate gentim2d for xx_atemp,xx_aqh,xx_swdown,xx_lwdown,xx_precip
302      - implement gentim2d for xx_tauu, xx_tauv
303    o pkg/ctrl, pkg/ecco :
304      - fix and complement the generic controls implementation
305    o pkg/exf/exf_getclim.F, exf_getffields.F, exf_getsurfacefluxes.F,
306        pkg/shelfice/shelfice_thermodynamics.F,
307        verification/hs94.1x64x5/code_ad/ctrl_map_gentim2d.F,
308        verification/hs94.1x64x5/code_oad/ctrl_map_gentim2d.F :
309      - add weight in CTRL_GET_GEN calls
310    o pkg/ctrl :
311      - ctrl_get_gen.F : add weight as input parameter, and apply
312        it directly rather than using smooth_correl2Dw (to be retired).
313      - ctrl_map_gentim2d.F : add wgentim2d in CTRL_GET_GEN call
314    o pkg/ctrl :
315      - introduce run time switch ctrlUseGen (in ctrl.h, ctrl_check.F,
316        ctrl_init_variables.F, ctrl_readparms.F, ctrl_summary.F)
317      - re-activate ctrl_summary (call in ctrl_init.F)
318    o pkg/ctrl/ctrl_cost_gen.F :
319      - fix CCP brackets, remove un-necessary myiter, mytime
320    o pkg/ecco, pkg/ctrl :
321      - remove cost_genctrl.F (now pkg/ctrl/ctrl_cost_driver.F)
322      - remove cost_forcing_gen.F (now pkg/ctrl/ctrl_cost_gen2d.F)
323      - add ctrl_cost_driver.F (replaces pkg/ecco/cost_genctrl.F)
324      - add ctrl_cost_gen2d.F (replaces pkg/ecco/cost_forcing_gen.F)
325    
326    checkpoint65d (2014/09/15)
327    o pkg/ctrl/CTRL_GENARR.h, ctrl_readparms.F :
328      - add xx_genarr2d_bounds,xx_genarr3d_bounds,
329        xx_genarr2d_numsmooth, xx_genarr3d_numsmooth
330    o pkg/ctrl/ctrl_map_ini_genarr.F :
331      - remove compilation failure
332      - replace hard coded example
333      - use ctrl_map_ini_gen2D, 3D
334    o pkg/ctrl/ctrl_pack.F, ctrl_unpack.F :
335      - on/off switch based upon xx_genarr2d_weight,3d
336    o src/packages_init_variables.F :
337      - regroup pkg/estimation calls
338      - remove CTRL_MAP_INI, CTRL_MAP_INI_ECCO
339        (moved to ctrl_init_variables)
340    o cost/cost_init_varia.F :
341      - remove ecco_cost_init_varia
342        (moved to ecco_init_varia)
343    o ctrl/ctrl_init_variables.F :
344      - add CTRL_MAP_INI, CTRL_MAP_INI_ECCO
345      - add CTRL_MAP_INI_GENARR, SEAICE_CTRL_MAP_INI
346    o ctrl/ctrl_map_ini.F :
347      - remove ctrl_map_ini_genarr, seaice_ctrl_map_ini
348        (moved to ctrl_init_variables)
349    o ctrl/ctrl_map_ini_ecco.F :
350      - remove ECCO_PHYS (mv to ecco_init_varia)
351      - remove seaice_ctrl_map_ini (mv to ctrl_init_variables)
352    o ecco/ecco_ad_diff.list :
353      - add ecco_init_varia.f
354    o ecco/ecco_init_varia.F
355      - new routine
356    o pkg/streamice:
357      - move call to STREAMICE_INITIALIZE_PETSC from the_model_main.F
358        to streamice_init_fixed.F ; fix setting of STREAMICEisOn.
359      - from model/src, only call pkg/streamice routines if useStreamIce is TRUE.
360    o pkg/generic_advdiff:
361      - fix bug causing negatives in GAD_SMOLARKIEWICZ_HACK, introduced 8/8/2014.
362    o pkg/exf:
363      - exf_getffields.F : add xxg_atemp, xxg_aqh, xxg_swdown, xxg_lwdown,
364         xxg_precip capability
365      - exf_wind.F : no need for ALLOW_WSPEED_CONTROL cpp switch
366    o pkg/ctrl:
367      - ctrl_pack.F, ctrl_unpack.F : omit (un)packing of undefined xx_gentim2d
368    o model/src/load_fields_driver.F :
369      - move call to CTRL_MAP_GENTIM2D ahead of BULKF_FIELDS_LOAD, EXF_GETFORCING
370        so xx_gentim2d can be applied to e.g. exf fields in a timely manner.
371    o OpenAD verification experiments:
372      - Include explicitly AUTODIFF_OPTIONS.h, COST_OPTIONS.h, and CTRL_OPTIONS.h
373        in src files (to enable to skip the ECCO_CPPOPTIONS.h);
374        for now, only in pkgs used in OpenAD verification experiments.
375      - Change all except one (halfpipe_streamice) OpenAD experiments to use pkg
376        specific option file (AUTODIFF_OPTIONS.h, COST_OPTIONS.h & CTRL_OPTIONS.h)
377        instead of using ECCO_CPPOPTIONS.h (with all relevant options in it).
378        This applies to both TAF (*/code_ad/) and OpenAD (*/code_oad/) tests.
379    o OpenAD verification tests:
380      - finish removing ALLOW_AUTODIFF_OPENAD (replaced by ALLOW_OPENAD);
381      - finish replacing ALLOW_AUTODIFF_TAMC by ALLOW_AUTODIFF (except for
382        tape/storage which are specific to TAF/TAMC) in pkgs used in OpenAD exp.
383      - leave ALLOW_AUTODIFF_TAMC undef in OpenAD verification tests (*/code_oad/)
384        and remove local copy of "tamc.h" (needed only if ALLOW_AUTODIFF_TAMC).
385    o model/src & generic_advdiff:
386      - change hard-coded loop-range in S/R APPLY_FORCING_T/S to set T & S
387        forcing over 0:sNx+1, 0:sNy=1 (instead of just 1:sNx,1:sNy): Model
388        dynamics requires valid tracer forcing only over tile interior but, for
389        some diagnostics, may need to extend it over 1 point in tile halo region.
390      - in gad_calc_rhs.F, update calls to gmredi_x/ytransport to get valid
391        tendency over i,j_Min,Max range. This allows to simplfy i,j_Min,Max
392        setting in temp/salt/ptracer_integrate.F
393    o pkg/dic:
394      - multiply tracer tendencies by maskInC (if ussing OBCS) before updating
395        gchem tracers: this allows to skip the 2nd call to OBCS_APPLY_PTRACER
396        in gchem_forcing_sep.F
397    o pkg/autodiff & obcs:
398      - add storage of current OB values for U & V (was already done for T & S).
399    
400    checkpoint65c (2014/08/30)
401    o pkg/dic:
402      - take out of dic_atmos.F the initialisation part (corresponding to istate=0)
403        and move it to new S/R DIC_INI_ATMOS ; also simplify the dependencies for
404        AD compilers (but still a Pb with multi-threading and Ajoint dependencies).
405    o verification:
406      - new experiment testing OBCS and DIC pkgs, using params & output from
407        tutorial_global_oce_biogeo but limited to a sub-domain around Drake
408        passage: take OBCS from the last year of a 2 yrs simulation and initial
409        conditions from t=1.yr while keeping the same forcing.
410    o model/src:
411      - when allowFreezing=T, only reset below freezing initial Temp to Tfreezing
412        (at any k) if checkIniTemp is not set to FALSE (default checkIniTemp=T).
413    o pkg/diagnostics (Stats-Diags):
414      - re-write S/R DIAGSTATS_CALC (more similar to TARGET_NEC_SX part) to:
415        a) refine region where stats are computed, excluding where arrhFac=0 ;
416        b) fix missing interior mask (use with OBCS) in 3-D fields statistics;
417        c) extend regional stats over the region edges (for U or V pt location).
418    o pkg/gchem:
419      - add a (2nd) call to OBCS_APPLY_PTRACER in gchem_forcing_sep.F (needed since
420        pkg/dic is currently changing/updating ptracers values beyond the OB).
421    o verification (hs94):
422      - convert Held & Suarez external_forcing.F (from hs94.cs, with Sigma-coords
423        bits) to apply_forcing.F and undef USE_OLD_EXTERNAL_FORCING in experiments
424        hs94.cs-32x32x5 and tutorial_held_suarez_cs ; also use the same version of
425        apply_forcing.F in 2D hs94 (fwd, ad & oad) but keep LatLon hs94 unchanged.
426    o pkg/ptracers:
427      - implement Adams-Bashforth on pTracers (instead of on tracer tendency),
428        switched on by setting PTRACERS_doAB_onGpTr=F (default set to doAB_onGtGs)
429      - change exp4 secondary test (input.nlfs) to test AB on T & S & pTracer
430        with AB-2 code (so that it get tested).
431    o model/src:
432      - allow to apply Adams-Bashforth on Temp & Salt (instead of on gT,gS)
433        with AB-2 code (previously only available with AB-3 code).
434        Also move the code (call to ADAMS_BASHFORTH S/R) form thermodynamics.F
435        to temp/salt_integrate.F (since the 2nd part of gt/sNm1 update is done
436        there, by calling CYCLE_AB_TRACER).
437    o pkg/generic_advdiff:
438      - change Tracer argument (drop bi,bj indices) in S/R GAD_CALC_RHS,
439        GAD_C2_ADV_R, GAD_U3_ADV_R, GAD_C4_ADV_R, GAD_DIFF_R, GAD_BIHARM_R
440        + also in GMREDI_X/Y/RTRANSPORT ; and update corresponding calls in
441        S/R temp/salt/ptracers_integrate.F
442    o model/src & pkg/ptracers:
443      - remove common block variables gT,gS (in DYNVARS.h), except when
444         USE_OLD_EXTERNAL_FORCING is defined; update TAF storage accordingly.
445      - remove common block variable gPtr.
446    o model/src & pkgs:
447      - change gTracer (and/or tracer) argument (drop bi,bj indices) in S/R
448         ADAMS_BASHFORTH(2&3), CYCLE_(AB_)TRACER, FREESURF_RESCALE_G,
449         IMPLDIFF, SOLVE_TRIDIAGONAL & _PENTADIAGONAL, GAD_SOM_ADVECT,
450         GAD_ADVECTION, GAD_CALC_RHS, GAD_IMPLICIT_R, TIMEAVE_CUMUL_DIF_1T
451      + change accordingly all calling S/R.
452      - use local temperature/salinity/ptracer tendency array (without bi,bj)
453        in S/R temp/salt/ptracers_integrate.F
454    o pkg/seaice:
455      - move computation of stress contributions to rhsU/V in s/r seaice_lsr
456        to separate s/r seaice_lsr_rhsu/v in order to be able to re-use code
457      - make u/vIceC local variables if SEAICE_CGRID is defined only to be used
458        in seaice_lsr
459      - seaice_lsr.F: make local 4D arrays UXX, VYY, etc 2D
460        in s/r seaice_lsr_calc_coeffs
461    o pkg/mdsio:
462      - in MDS_READ/WRITE_FIELD, stop if file-name (+prefix) is too long
463        (e.g., > MAX_LEN_MBUF -90 ) or, in INI_MODEL_IO, if mdsioLocalDir is
464        too long (e.g., > MAX_LEN_FNAM/2 )
465    
466    checkpoint65b (2014/08/12)
467    o pkg/matrix:
468      - pass, as argument, updated tracer field to S/R MATRIX_STORE_TENDENCY_EXP
469    o model/src:
470      - fix initialisation of geothermalFile; compile geothermal-flux code in
471        natl_box verification experiment.
472    o model/src & pkg/down_slope:
473      - push the k loop inside S/R TIMESTEP_TRACER (now called outside the k loop).
474      - in dwnslp_apply.F, update tracer tendency instead of the future tracer
475        field and call S/R DWNSLP_APPLY before TIMESTEP_TRACER; this affects
476        results at machine truncation level: update output of experiments
477        global_ocean.90x40x15.dwnslp (FWD) and lab_sea.noseaicedyn (AD).
478    o pkg/diagnostics (Stats-Diags):
479      - do not cumulate the full volume when DIAGNOSTICS_FILL is
480        called with bibjFlg < 0 (no increment of the counter for 2D/3D diag);
481        This fix the mean statistics when DIAGNOSTICS_FILL is called multiple
482        times (but Min,Max and StD are still wrong).
483    o model/src:
484      - add geothermal flux forcing: read in ini_forcing.F as time-constant
485        field "geothermalFlux" applied in S/R APPLY_FORCING_T (apply_forcing.F)
486    o model/src:
487      - move CYCLE_TRACER calls from tracers_correction_step.F to temp/salt/ptracer
488        _integrate.F so that, when leaving S/R THERMODYANMICS, theta,salt and pTrac
489        arrays are already updated while adjustments (filters, conv.adjustment) are
490        still applied later, in S/R TRACERS_CORRECTION_STEP.
491    o model/src:
492      - store in common bloc array "rhoInSitu" the virtual potential temperature
493        anomaly that is used to compute geopotential: this make the atmos code
494        more similar to ocean code which already uses rhoInSitu in calc_phi_hyd.F
495    o pkg/seaice/seaice_lsr.F
496      - rename integer variable ilcall to ipass (that's what it is called
497        in the residual diagnostics
498      - change time stepping for NPSEUDOTIMESTEP > 2 (does not change the
499        default) for improved non-linear convergence of the first few steps
500      - adjust a few comments and add new ones to explain some of the store
501        directives
502    o pkg/generic_advdiff (& ptracers):
503      - re-work the code to check for valid advection scheme and for minimum
504        size of overlap (now stored in local common bloc in gad_advscheme.F)
505    o pkg/seaice: another attempt to make the adjoint work for sea ice dynamics
506      - re-initialize more variables in seaice_lsr: u/vIceC, u/vIceNm1
507      - add an auxilliary variable "bet" and fix store directives and keys in
508        seaice_lsr_tridiagu/v, this seems to do the trick (i.e. more or
509        less exact gradients in my tests); but there are still
510        recomputation warning (although gradients are sort of OK), when
511        SEAICE_LSR_VECTORIZE is not defined, so this flag and
512        SEAICE_LSR_VECTORIZE_ZEBRA are recommended for efficiency.
513      - update verification experiments lab_sea.
514      - change some comments in S/R seaice_calc_viscosities
515    o model/src:
516      - if staggerTimeStep=T, always apply exchange to velocity field in
517        do_stagger_fields_exchanges.F instead of in do_fields_blocking_exchanges.F
518        (independent of using multi-dim advection or not); no effect on FWD run
519        but affects AD results (at machine truncation level): update output of
520        experiment 1D_ocean_ice_column (ad: 12 digits), hs94.1x64x5 (ad,oad: 13.d)
521        and isomip (oad: 12.d).
522    o pkg/generic_advdiff:
523      - stop if doAB_onGtGs is set to FALSE but ignored
524      - refine warning related to stability of tracer time-stepping
525        regarding internal wave dynamics.
526      - setting of AdamsBashforth_T,S when doAB_onGtGs=F: remove condition
527        on staggerTimeStep & implicitIntGravWave (will now get a warning
528        if potentially unstable).
529    o pkg/kl10:
530      - add new pkg "kl10" for mixing due to internal wave breaking, from
531        http://www.sciencedirect.com/science/article/pii/S1463500310000144
532        (contribution from Jody Klymak), tested in verification experiment
533        verification/internal_wave/input.kl10/
534    o isomip experiment:
535      - test pkg/shelfice with Non-Lin Free-Surf in one of the FWD set-up
536        (input.htd) and update the output.
537    o cd_code experiments:
538      - use default cd_code options (#undef CD_CODE_NO_AB_MOMENTUM &
539        #undef CD_CODE_NO_AB_CORIOLIS) in experiments: cfc_example (fwd)
540        global_ocean.90x40x15 (ad & oad) and OpenAD (ad & oad) and
541        update the corresponding output.
542    o pkg/seaice:
543      - reduce the number of include files and store directives in
544        S/R seaice_lsr_tridiagu/v
545      - change the order of loops in one case in S/R seaice_lsr_tridiagv
546        (only for SEAICE_VECTORIZE_LSR_ZEBRA defined), which allows me to
547        get rid off one store directive (a TAF bug?)
548      - add one more instance of ifdef SEAICE_VECTORIZE_LSR_ZEBRA in
549        S/R seaice_lsr_tridiagv to change the loop range for consistency
550      - remove ilcall, m from parameter list of S/R seaice_lsr_tridiagu/v
551      - fix a bug that affects the JFNK solver: replace sNx/y by i/jMax in
552        S/R seaice_lsr_tridiagu/v (requires update of
553        offline_exf_seaice/input.dyn_jfnk)
554    
555    checkpoint65a (2014/07/27)
556    o model/src:
557      - Non-Lin Free-Surf in p/z coords: allows hFacW,S to be larger than
558        surrounding hFacC=1 @ edge of a step with different kSurfC on either side
559        (topo in p-coords, ice-shelf in z-coords); update output of experiments
560        tutorial_global_oce_in_p and isomip (both AD and OpenAD output).
561    o model/src:
562      - collect momentum forcing tendency into local 2-D array (passed as argument
563        to apply_forcing S/R); this simplifies mom. Forcing diagnostics and CD_CODE
564        parts in timestep.F (without CD_CODE_NO_AB_MOMENTUM defined = the default);
565        affects results at machine truncation level (e.g., if using OBCS_SPONGE).
566      - collect T & S forcing tendency into local 2-D array (passed as argument to
567        apply_forcing S/R); add 3-D diagnostics for temp & salt forcing tendency.
568        affects results at machine truncation level (e.g., ocean: if using
569        SHORTWAVE_HEATING ; atmos: if using FrictionHeating or (atm_Rq<>0) moist
570        correction due to vertical advection).
571      - update output of experiments: fizhi-cs-32x32x40 (13 digits),
572        global_ocean.cs32x15 (fwd: icedyn, seaice, thsice, all 3 @ 11d; adm & tml:
573        seaice_dynmix & thsice, fwd grd @ 3 & 8), hs94.1x64x5 (ad grd @ 13),
574        obcs_ctrl (ad & fwd grd @ 12 & 7).
575    o pkg/ptracers & diagnostics:
576      - use ptracers (short) name (instead of long one) to make ptracers diagnostics
577        title (to avoid some unexpected truncation); sort out ptracers diags units.
578      - collect ptracer forcing tendency into local 2-D array (passed as argument
579        to apply_forcing S/R); add 3-D diagnostics for ptracers forcing tendency.
580    
581    checkpoint65 (2014/07/18)
582    o pkg/fizhi:
583      - add parenthesis around fizhi tendencies in fizhi_tendency_apply.F: this
584        affects results at machine truncation level. Update output of experiments
585        fizhi-cs-32x32x40 (12 digits for cg2d) & fizhi-cs-aqualev20 (13 digits).
586    o pkg/seaice: more clean up
587      - rename TAF common block tapes to be more consistent and remove
588        unnecessary duplicates
589      - add store directives to remove more recomputations, but use smaller
590        tapes (and adjust keys) when SEAICE_LSR_ADJOINT_ITER is undefined.
591        The idea behind this flag is to reduce the memory footprint when the
592        adjoint of the LSR is not required. As of now, defining the flag
593        SEAICE_LSR_ADJOINT_ITER increases 4 common block tapes for 2D field by
594        a factor of SOLV_MAX_FIXED (=500 by default in SEAICE_SIZE.h).
595        For experiment offline_exf_seaice, this means on a linux box with gfortran
596        nearly a factor of 10 (but keep in mind there is mostly seaice code in
597        this experiment):
598        > size mitgcmuv_ad
599        text    data        bss     dec        hex
600        5100659 1216  220458952  225560827  d71c8fb
601        5339425 1200 1868783272 1874123897 6fb4dc79 (SEAICE_LSR_ADJOINT_ITER)
602        but only a moderate increase of 36% for global_ocean.cs32x15:
603        text    data        bss     dec        hex
604        6695027 1648 1014578664 1021275339 3cdf6ccb
605        6695203 1648 1382505320 1389202171 52cd8afb (SEAICE_LSR_ADJOINT_ITER)
606      - note: there are still recomputations in global_ocean.cs32x15 and
607        offline_exf_seaice and the gradient agreement changes (gets a
608        little worse) for global_ocean.cs32x15 (-> update output_adm.seaice.txt)
609      - in general, the AD gradients still are wrong
610    o OpenAD
611      - clean up code_oad/ directories somewhat by moving files
612        dontCompile, dontTransform, keepOriginal to OAD_support/
613    o model/src:
614      - using MOM fluxform and Non-Lin Free-Surf with momDissip_In_AB=F
615        (not currently tested): add dissipation terms before NLFS rescaling of
616        tendencies (previously done after).
617    o pkg/diagnostics:
618      - write stats-diags in ascii file with more digits (same as in monitor).
619    o pkg/down_slope:
620      - drop the bi,bj dimension of argument recip_hFac in S/R DWNSLP_APPLY; with
621        NLFS (not tested), use new recip_hFac value in order to conserve tracer.
622    o model/src:
623      - new file "apply_forcing.F" containing all the code previously in
624        external_forcing.F, but with new argument list: pass, as new argument,
625        the current level tendency array to update (instead of a direct update
626        of the common bloc array). Change the corresponding calls.
627      - add CPP option USE_OLD_EXTERNAL_FORCING (default is undef) to use
628        EXTERNAL_FORCING_U,V,T,S subroutines (for backward compatibility).
629    o pkg/seaice/seaice_lsr, a little bit of clean up
630      - rearrange some code blocks, so that now all calculations for
631        setting up the right-hand-sides done within one single block
632        (I find that easier to read and understand)
633      - rearrange freedrift-code to reduce the number of ifdefs
634      - adjust some indentations and comments
635    
636    checkpoint64z (2014/07/10)
637    o model/src and several pkgs:
638      - change argument list of all S/R called from external_forcing.F and
639        called from ptracers_forcing.F (renamed to ptracers_apply_forcing.F)
640        to pass, as argument, the current level tendency array to update
641        (instead of a direct update of the common bloc array).
642      - change also (in the same way) argument list of PTRACERS_APPLY_FORCING;
643      - rename taueddy_external_forcing.f to taueddy_tendency_apply.F
644    o pkg/seaice/seaice_lsr.F
645      - always initialize local arrays in seaice_lsr_tridiagu/v
646      - add more local tapes to seaice_lsr_tridiagu/v
647      - move storing u/vice(:,:,bi,bj) out of seaice_lsr_tridiagu/v, but
648        keep it in bi/bj loop; this seems to be essential
649      - gradients are still wrong but only by 4-7 orders of magnitude
650        instead of 15 orders of magnitude, lab_sea improves a little
651    o pkg/seaice
652      - (pkg/autodiff) remove storing/restoring of seaiceMaskU/V that
653        generates unnecessary code in seaice_lsr_ad
654      - add more store directives in seaice_lsr to avoid unnecessary code
655        in seaice_lsr_ad
656      - exclude some residual computations in seaice_lsr when
657        ALLOW_AUTODIFF_TAMC is defined in order to avoid unnecessary code
658        in seaice_lsr_ad
659      - add more storing, a new tape (model/src/the_main_loop.F) and
660        another key for SEAICE_LSR_VECTORIZE_ZEBRA (the local keys ilockey
661        and klockey should be checked by a specialist)
662      - modify ( define SEAICE_VECTORIZE_LSR and SEAICE_LSR_ADJOINT_ITER )
663        and update lab_sea after previous changes in pkg/seaice below
664    o pkg/autodiff:
665      - introduce useSmoothCorrel2DinAdMode, SEAICEapproxLevInAd, and
666        viscFacInAd : run time parameters allowing for adjoint switches
667        note : logic for useSmoothCorrel2DinAdMode is in ctrl_readparms.F
668    o pkg/ecco:
669      - introduce cost_gencost_boxmean.F that computes a box mean
670        temperature (for use in adjoint sensitivity studies).
671    o model/src/set_defaults.F : initialize viscFacAdj to 1.
672    o pkg/mom_common/mom_calc_visc.F:
673      - ifdef ALLOW_AUTODIFF then include viscFacAdj factor.
674    o pkg/seaice/seaice_summary.F:
675      - statement for SEAICEadjMODE now in autodiff_readparms.F
676    o pkg/seaice:
677      - remove some store directives and add new ones in an effort to get
678        finally rid off the recomputation warnings. This is successful
679        when SEAICE_VECTORIZE_LSR ***and*** SEAICE_LSR_ADJOINT_ITER are
680        defined (i.e. no extensive recomputation warnings left), but there
681        are still too many recomputations on the solver iteration level
682      - define SEAICE_VECTORISZE_LSR in offline_exf_seaice/code_ad/SEAICE_OPTIONS.h
683      - move definition of MPSEUDOTIMESTEPS into TAMC-block in
684        SEAICE_SIZE.h
685      - add a store directive in S/R seaice_calc_viscosities
686    o pkg/seaice (ITD code):
687      - fix definition of Hlimit for multi-threaded case
688      - use double precision arithmetic to compute Hlimit: this affects results;
689        update output of experiment seaice_itd.
690    o replace content of verification/seaice_itd
691      - instead of a 1D column use the configuration of offline_exf_seaice
692        to test the ice thickness distribution code with ridging
693      - this is a first shot at this experiment
694      - change of some defaults of ridging parameters SEAICEhStar (from
695        100 to 25) and SEAICEmuRidging (from 5 to 3) in seaice_readparms.F
696        and lot of new comments.
697    
698    checkpoint64y (2014/06/20)
699    o pkg/seaice/seaice_reg_ridge.F:
700      - modify the regularization of very small volumes of ice; only check
701        total volume HEFF, and do not apply correction to individual ice
702        classes because that leads to funny patterns in the heat and fw-fluxes
703        into the ocean. Adjust seaice_itd/results/output.txt
704      - replace nITD by SEAICE_multDim in loop-ranges
705    o pkg/exf:
706      - add code to process the case field period = -12. with UV interpolation.
707      - move debug print (formerly active when exf_verbose=T) from EXF_getFFieldRec
708        into S/R that calls it (i.e., exf_set_gen.F, exf_set_uv.F & obcs_exf_load.F)
709    o verification/global_with_exf:
710      - switch all fields period to -12. (was previously untested) in input/data.exf
711        (but keep secondary test ".yearly" unchanged); update the reference output.
712    o pkg/cal:
713      - new calendar type "noLeapYear" for 365 days calendar without any leap year.
714    o pkg/exf:
715      - new integer parameter "exf_debugLev" (default set to main model debugLevel)
716        to replace logical switch "exf_verbose"
717      - report in STDOUT when loading a new record (if exf_debugLev >= 3)
718    o pkg/sbo:
719      - update from Katherine Quinn: evaluate mass directly from density and SSH
720        (budget using Finite Volume method) instead of from bottom pressure.
721      - allow testreport to collect few selected SBO output ; tested in exp.
722        global_ocean.90x40x15 (after updating the results, to include SBO output).
723      - fix some multi-threading issues (in output part).
724    o model/src & most packages:
725      - always call {PKG}_READPARMS even if corresponding use{PKG}=F;
726      - in {PKG}_READPARMS, in case use{PKG}=F: add a call to new S/R
727        PACKAGES_UNUSED_MSG to print a weak warning when parameter file
728        "data.{pkg}" exist ; and leave the S/R (return) just after.
729      - more standard LAND pkg interface (land_init_fixed.F, land_check.F).
730        + call LAND_READPARMS from packages_readparms.F
731    o pkg/seaice:
732      - remove code that resets useThSice in S/R seaice_readparms and
733        replace it by a warning in S/R seaice_check
734      - remove parameter MULTDIM, replace with nITD and runtime
735        parameter SEAICE_multDim (still hard-wired to nITD if
736        SEAICE_ITD is defined)
737    
738    checkpoint64x (2014/05/24)
739    o verification/lab_sea:
740      - update adjoint and TLM output following changes to pkg/salt_plume
741      - un-do the update after putting back local recip_Cp in few places.
742    o pkg/salt_plume: modifications by An Nguyen:
743      - add capability to do brine rejection (salt-plume) as function of
744        volume+tracers (instead of only salinity tracer).
745      - conserve volume by exchanging volume from each kLev to above to
746        accommodate in-coming brine volume
747      - store surface and klev exchanged fraction + volume in 4 new 3-d arrays
748      - switch KPP surf buoyancy due to brine forcing to 3-d
749        (3 more 3-d arrays, 2 for SPforcing[T,S], 1 for boplume)
750      - add salt_plume_volfrac, salt_plume_apply, salt_plume_tendency_apply_t
751      - unrelatedly, also add ad-hoc capability to vary salt_plume scheme
752        in East/West Arctic.
753    o pkg/sbo:
754      - incorporate modifications from Katherine Quinn to enable the use of sbo
755        pkg in ECCO-v4 set-up ; remove SBO-TimeAve output ; add monitor-like
756        output for future testreport verification (unfinished).
757    o pkg/atm_phys:
758      - change diagnostics (AtPh_Trf & AtPh_Qrf) of DARGAN_BETTSMILLER S/R:
759        skip the reseting of t_ref & q_ref to initial t & q ; this preserve the
760        output of S/R CAPECALCNEW (Parcel temp & q) for diagnostics.
761    o pkg/seaice
762      seaice_calc_ice_strength.F: modify expression to avoid divisions
763        (affects truncation)
764      seaice_do_ridging.F: clean up the insectarium
765      - fix a bug that was compensated by areaScaling (-> remove areaScaling code)
766      - added SEAICEsnowFracRidge to redistributed snow (2nd bug)
767      - set closing/openingRate to zero where no extra iteration is need (3rd bug)
768      - add some debugging information and error messages (warnings)
769    o model/src: modifications relatd to atmosphere p*:
770      - Switch to more accurate p* coordinate slope term (calc_grad_phi_hyd.F)
771      - With p* or Sigma-P, use constant reference Pot.Temp (thetaConst) instead
772        of vertical profile tRef in geopotential background and anomaly.
773      - Acount for true p* correction in theta <-> T conversion in pkg/aim_v23
774        and pkg/atm_phys.
775      - Update FWD output of experiments: aim.5l_cs (x2), fizhi-cs-32x32x40,
776        fizhi-cs-aqualev20, fizhi-gridalt-hs, tutorial_held_suarez_cs, cpl_aim+ocn.
777    o pkg/seaice: fix a bug in seaice_prepare_ridging.F, forgot a sqrt
778    o pkg/ptracers: compute ptracer source/sink due to linear free surface.
779        not used right now, but can be used in BGC packages to fix conservation.
780    o pkg/dic, pkg/gchem: move tracer_meanarea to gchem, so it can be used by
781        other packages too.
782    o pkg/seaice/seaice_calc_ice_strength.F: replace SEAICE_rhoSnow by
783        SEAICE_rhoIce in the Rothrock (1975)-type strength calculations (bug fix)
784    o model/src:
785      - since we have several heat capacity (even in model/src), define "recip_Cp"
786        as local variable (no longer in common block) to avoid any confusion.
787      - add thetaConst in PARAMS.h (to be used with pStar or sigma-P coords).
788    o pkg/exf:
789      - from Jeff Scott: add option (#define EXF_CALC_ATMRHO) to calculate local
790        air density as function of air Temp, Humidity and atm pressure.
791    
792    checkpoint64w (2014/05/02)
793    o verification:
794      - update output_adm.txt files for experiment global_ocean.cs32x15 (seaice &
795        seaice_dynmix) and lab_sea (primary test & noseaicedyn): moving/changing
796        code from seaice_growth.F & seaice_advdiff.F to new ridging routines
797        seaice_reg_ridge.F seaice_do_ridging.F affects AD gradient
798        (down to 8-7 matching digits for global_ocean and 5-6 for lab_sea).
799    o model/src: for atmosphere in p* coords:
800      - store factor rStarFacC**atm_kappa (= pStarFacK) in common block
801      - implement more accurate p* coordinate slope term (in calc_grad_phi_hyd.F),
802        but not yet activated.
803    o pkg/seaice: fix restart problem for ITD with new ice strength parameterisation:
804      - move computation of opnWtrFrac = 1-AREA to before computing ice strength
805      - this changes the results (but not for any verification experiment, because
806        none tests this), but avoids having an extra field in the restart files
807    o pkg/seaice: remove global variable TICE (not needed)
808      - replace by TICES or local variable where necessary (cost_seaice_test,
809        seaice_diagnostics_state)
810      - move copying TICE to TICES from seaice_check_pickup to seaice_read_pickup
811      - use specific read/write routines for reading and writing individual leves
812        of a multilevel field
813    o pkg/ctrl & model/inc:
814      - move additional anomaly fields of control vars (related to options:
815         ALLOW_KAPGM_CONTROL, ALLOW_KAPREDI_CONTROL and ALLOW_BOTTOMDRAG_CONTROL)
816        from DYNVARS.h into new header file: CTRL_FIELDS.h
817    o pkg/seaice: some small modifications to the ridging code
818      - make fw2ObyRidge a global variable and add the freshwater flux to
819        seaice_growth
820      - pass actual thickness from seaice_prepare_ridging, so that it is
821        computed only in one place and compute it in the same way as in
822        seaice_growth
823      - initialise more fields in seaice_do_ridging that where cause floating
824        point exceptions over land
825    o pkg/seaice: preparations for ridging code and first real ridging code
826      - move most of "PART 1" of S/R seaice_growth into a new and separate
827        S/R seaice_reg_ridge that will both regularize the state variable after
828        advection call the actual ridging routine;
829      - requires to make 5 fields global fields: d_HEFFbyNEG,d_HSNWbyNEG,
830        d_AREAbyRLX,d_HEFFbyRLX,saltFluxAdjust;
831      - remove ridging code from seaice_advdiff
832      - clean up remaining part 1 of seaice_growth in an attempt to make it
833        more readable (this is probably subjective)
834      - call seaice_itd_redist once in the initialisation phase to have the initial
835        conditions in the correct category
836      - finally: add new ridging routine for ITD code
837    
838    checkpoint64v (2014/04/11)
839    o pkg/ecco:
840      - add runtime parameters mdt[start,end]date[1,2]
841      - rename variable "tpmean" as "mdt" and "topexmeanfile" as "mdtdatfile"
842    o pkg/seaice:
843      - make deltaC a global variable, so that it can be used in ridging code
844      - first step towards ridging: introduce new routines that compute
845        ice strength based on ridging parameters
846      - add diagnostic for HSNOWITD
847      - add opnWtrFrac as a global variable (required for ridging scheme)
848    o pkg/salt_plume + pkg/seaice/seaice_growth.F
849      - add SALT_PLUME_IN_LEADS flag to activate pkg/salt_plume only when ice
850        AREA exceeds a threshold (code contributed by I.Fenty in 2011)
851    o verification/hs94.1x64x5:
852      - leave ALLOW_AUTODIFF_TAMC undefined in code_oad/AUTODIFF_OPTIONS.h
853      - do not use ECCO_CPPOPTIONS.h anymore for TAF & OpenAD Adjoint tests.
854    o autodiff:
855      - Start to include explicitly AUTODIFF_OPTIONS.h, COST_OPTIONS.h,
856        and CTRL_OPTIONS.h in src files (to enable to skip the ECCO_CPPOPTIONS.h)
857        For now, only in pkgs used in verification/hs94.1x64x5.
858      - Replace ALLOW_AUTODIFF_TAMC by ALLOW_AUTODIFF (except for tape/storage
859        which are specific to TAF/TAMC).
860      - Replace ALLOW_AUTODIFF_OPENAD by ALLOW_OPENAD:
861        since ALLOW_OPENAD is defined in PACKAGES_CONFIG.h (any time pkg/openad
862        is compiled), this simplifies/reduces which *_OPTIONS.h file to include.
863      - OpenAD: change Makefile to generate the appropriate AD_CONFIG.h when
864        building mitgcmuv_ad (make adAll).
865    o pkg/ecco:
866      - cost_gencost_seaicev4.F:
867         reformulate proxy cost as function of sst and local param SEAICE_freeze
868         change cost names from siv4-[sst,vol] to siv4-[deconc,exconc]
869      - add stop statement if old names siv4-[sst,vol] are used
870      - add snapshots + cost reports for atmospheric longwave
871      - remove factor 0.1 in front of wtau[u,v]
872      - replace never used flag ALLOW_TMI_COST_CONTRIBUTION with
873         ALLOW_TMI_SST_COST_CONTRIBUTION
874    o pkg/atm_phys:
875      - add some diagnostics for Short-wave and for convection S/R.
876    o pkg/seaice/seaice_growth:
877      - fix a bug in the lateral melt parameterization for SEAICE_ITD
878        in seaice_growth; tempFrz needs to be computed inside the i/j-loop
879      - rearrange loop order for better vector code in the same code block
880      - rewrite the floeDiameter formula to have fewer divisions
881      -  (miraculously) none of this changes the results of seaice_itd
882    o pkg/smooth:
883      - move param smooth2Ddiffnbt to pkg/ecco
884    o pkg/salt_plume:
885      - salt_plume_frac.F:
886         clean up local param names
887         reformulate (1-frac) to frac; original 1-frac was based on swfrac code
888    o pkg/rw:
889      - add RS version of S/R READ_MFLDS_LEV.
890    o pkg/streamice:
891      - fix the restart test by writing/reading pickup_streamice files.
892    o pkg/seaice:
893      - refine checks for jfnk-related parameters
894      - comment out if statement with SEAICEuseIMEX parameter as long as there
895        is no IMEX code to avoid confusion and surprises
896    
897    checkpoint64u (2014/03/07)
898    o verification/MLAdjust:
899      - rename secondary test suffix:
900         1.leith  -> A4FlxF  + switch to flux-form & add side-drag
901         0.leithD -> AhFlxF  + switch to flux-form
902         0.smag   -> AhVrDv  (use Vorticity-Div. visc form) + add side-drag
903         0.leith  -> AhStTn  (use Strain-Tension visc form) + add side-drag
904    o pkg/mom_vecinv:
905      - remove unused arguments from S/R MOM_VI_HDISSIP & MOM_HDISSIP (as it used
906        to be before mom_calc_visc.F)
907      - skip the call to MOM_CALC_TENSION & MOM_CALC_STRAIN if not needed.
908      - add 2nd copy of vort3 & strain that knows about lateral BC (free/no slip):
909        this is simpler for the adjoint and for diagnostics.
910    o model/src + pkg/momentum:
911      - add input files for  2-D additional Western and Southern cell-edge wall
912         (e.g., to add "thin-wall" where it is =1).
913      - fix sideDrag option for thin-walls with Non-Lin Free-Surf
914        using 2nd hFacZ that is computed from initial (fix domain) hFac
915      - known limitations of thin wall implementation: not yet coded for sigma
916        coords; not working with CD-scheme neither.
917    o pkg/seaice:
918      - rename recently introduced parameters from (wrong name) AB to
919        BDF (backward difference time discretisation)
920      - retire runtime parameters SEAICEuseAB2, SEAICE_abEps
921    o tools/adjoint_options:
922      - remove setting of "OPENAD=true" (now set by command line "genmake2 -oad")
923    
924    checkpoint64t (2014/02/01)
925    o pkg/ecco
926      - add compile flag ALLOW_GENCOST_TIMEVARY_WEIGHT in ECCO_OPTIONS.h and
927        runtime logical flag gencost_timevaryweight to read daily sea-ice sigma
928      - replace hard-coded record number and period which only work for monthly
929        with read-in runtime param that works for other periods (month,day,year)
930    o pkg/thsice
931      - corrected store directive fixes thsice adjoint gradient checks
932    o genmake2 & testreport:
933      - add genmake2 option "-oad" to generate a Makefile for OpenAD built and
934        in this case, use tools/adjoint_options/adjoint_oad as default AD optfile.
935        Update testreport accordingly. No need to set "export OPENAD=true"
936        in adjoint_options/adjoint_oad anymore (will be removed later).
937    o pkg/shelfice:
938      - put T & S shelfice forcing into model surfaceForcing_T,_S (for now,
939        only if SHELFICEboundaryLayer=F); Change model/src/external_forcing.F
940        so that surface forcing applies to k=kSurf if using pkg/shelfice.
941    o pkg/ctrl, pkg/grdchk, pkg/ecco:
942      - Changes to make GENARR more modular (i.e. invisible if not used)
943    o model/src/temp_integrate.F and salt_integrate.F
944      - re-include store directives that were removed on Dec 27th.
945    o model/src/external_forcing_surf.F
946      - add storage directives for EmPmR and PmEpR to avoid recomputation of
947        seaice_model in the adjoint that is problematic when seaice_model is
948        turned off in the adjoint. The resolved issue dated back to July when
949        EXTERNAL_FORCING_SURF call was moved.
950        Update global_ocean.cs32x15/*/output_adm.seaice_dynmix.txt accordingly.
951    o pkg/exf/exf_check.F
952      - fix a small bug again (originally found by Wentao Liu, now found again)
953      - streamline error output
954    o pkg/streamice and aim_v23:
955      - replace a few "_EXCH_XY_RL (" with "_EXCH_XY_RL(", so that
956        Apple's /usr/bin/cpp knows what to do:
957        Apple LLVM version 5.0 (clang-500.2.79) (based on LLVM 3.3svn)
958        Target: x86_64-apple-darwin13.0.0
959    
960    checkpoint64s (2014/01/05)
961    o tools/adjoint_options:
962      - switch to fastopt.net TAF server (instead of default fastopt.de) for
963        AD optfiles adjoint_diva & adjoint_f95 (similar to adjoint_default).
964    o model/src:
965      - remove some unnecessary TAF storage directives in forward_step.F and
966        in dynamics.F (note: not always removed by TAF, e.g., double storage
967        of kappaRU,kappaRV in former version of dynamics.F).
968    o model/src & pkg/ptracers:
969      - call directly GAD_IMPLICIT_R & IMPLDIFF + DWNSLP_APPLY from temp_integrate.F
970        salt_integrate.F and ptracers_integrate.F (instead of from thermodynamics.F)
971        and remove ptracers_dwnslp_apply.F & ptracers_implicit.F
972      - call MATRIX_STORE_TENDENCY_EXP for each tracer (in ptracers_integrate.F)
973      - add fZon & fMer as output argument of S/R GAD_CALC_RHS.
974      - update TAF AD-output of experiments global_ocean.90x40x15 (13 for AD-grad).
975    o useSingleCpuInput separates single-CPU input from single-CPU output;
976        for now only implemented for in exf_interp_read.F
977    o verification/advect_xy:
978      - fix missing EXCH call in local version of ini_salt.F and update output.
979    o momentum diagnostics:
980      - fix which deltaT is used in Total-Tendency diagnostics.
981      - fix typo in diagnostics for momentum tendency from AB.
982    o pkg/seaice/seaice_lsr.F: fix an initialisation bug for the
983        SEAICE_VECTORIZE_LSR_ZEBRA option that lead to NaNs on a NEC-SX8
984    
985    checkpoint64r (2013/12/08)
986    o verification/*/results:
987      - Update reference output of experiments that were passing with just 13 digits
988         (make it easier to detect future changes in results)
989    o model/src & pkg/ptracers:
990      - move calls to GAD_ADVECTION (Multi-Dim advection) from thermodynamics.F to
991        inside temp_integrate.F and salt_integrate.F and from ptracers_advection.F
992        to inside ptracers_integrate.F ; remove ptracers_advection.F
993    o coupling interface pkgs:
994        [atm_compon_interf, ocn_compon_interf & atm_ocn_coupler]
995      - change the config check to test the agreement of Ocean Depth
996        with ATM land/sea mask (instead of ATM orography);
997      - send to coupler the number of coupler time-steps to do for this run:
998        this allows to check for consistency and don't need anymore to be
999        specified in parameter file "data";
1000      in coupler:
1001      - check consistency of RunOff map versus Ocean Depth and ATM land/sea mask.
1002      - improve report to log-file of config setting (pass log-file unit to few S/R)
1003    o pkg/compon_communic:
1004      - add coupling send/receive for non-tiled integer vector;
1005      - add S/R to check and stop if any proc has an error (similar to
1006        eesupp/src/stop_if_error.F but single thread and across Comm_World).
1007    o pkg/exch2:
1008      - in exch2*_get_rx[1,2]: use new list "W2_tileIndex" to replace search
1009        through list of all tiles my proc owns.
1010    o model/src:
1011      - AUTODIFF only: in calc_adv_flow.F, recompute rTransKp (instead of copying
1012        from rTrans) to simplify dependencies (no need to store rTrans anymore in
1013        calling S/R); this affects AD results at machine truncation level:
1014        update AD-output (TAF) of experiments: 1D_ocean_ice_column,
1015        bottom_ctrl_5x5 & obcs_ctrl (12 digits for AD grad, same FWD grad).
1016    o tools/build_options:
1017      - simplify Warnings options (-ieee & -devel cases) in linux_amd64_gfortran
1018    o coupling interface pkgs:
1019        [compon_communic, atm_compon_interf & ocn_compon_interf]
1020      - move declaration of local array "ibuf" out of header file "CPLR_SIG.h"
1021        to each S/R that needs it; remove un-used variables.
1022      - change component tile registration (cpl_register.F in both compon_interf
1023        and mitcomponent_tile_register.F) to pass the full list of tiles
1024        information (including bi,bj) in 1 vector (instead of in a bi,bj matrix).
1025      - with pkg/exch2: adopt the same convention used for I/O to define mapping
1026        towards coupler global array (unless W2_useE2ioLayOut=F):
1027         a) can now use different tiling between atm & ocn comp.
1028         b) no needs to modify the run-Off map when changing tiling (was needed
1029            even if using the same tiling between atm & ocn).
1030         c) will allow to run with blank-tiles in 1 component (e.g., for ocean
1031            full land tiles); not yet tested.
1032      - check for valid mapping from comp. tile to coupler global array
1033      - improve report of tile registration results to log file.
1034    o pkg/exch2:
1035      - in eesupp/src/eeboot.F: move call to W2_EEBOOT before Coupler
1036        tile-registration (CPL_REGISTER);
1037      - activate (un-comment) definition and setting of "W2_tileIndex" list to
1038        store the local bi,bj indices of each tile;
1039      - also print bi,bj in local report to log file;
1040      - fix pkg/debug/debug_cs_corner_uv.F for the case nSy > 1 (left from
1041        Jun 2009 modif of pkg/exch2).
1042    o testing on baudelaire:
1043      - run 2 tests at a time: no significant slow down (since enough cpu) and
1044        get the full set of test done earlier
1045      - switch the ifort test to "-devel" ; run the OpenAD test everyday.
1046    o model/src/thermodynamics.F and routines called from it:
1047      - pkg/gmredi: gmredi_residual_flow.F (replacing gmredi_calc_uvflow.F &
1048        gmredi_calc_wflow.F) to update eulerian velocity (input) into residual
1049        velocity (outp) by adding bolus velocity.
1050      - model/src: calc_adv_flow.F (replacing calc_common_factors.F) to compute
1051        mass transport from velocity + lateral grid cell area
1052      - rename calc_gt.F to temp_integrate.F (includes call to TIMESTEP_TRACER)
1053      - rename calc_gs.F to salt_integrate.F (includes call to TIMESTEP_TRACER)
1054     in thermodynamics.F
1055      - remove k from thermodynamics.F and move it to temp_integrate.F
1056        salt_integrate.F and ptracers_integrate.F (now done inside the tracer
1057        loop).
1058      - compute locally (in thermodynamics.F) 3-D velocity field that is used to
1059        advect tracers; pass it as argument to GAD_ADVECTION, GAD_SOM_ADVECT,
1060        PTRACERS_ADVECTION, TEMP_INTEGRATE, SALT_INTEGRATE, PTRACERS_INTEGRATE,
1061        GAD_IMPLICIT_R and PTRACERS_IMPLICIT
1062      - update AD-output (TAF & OAD) of experiments: 1D_ocean_ice_column,
1063        global_ocean.90x40x15, tutorial_global_oce_biogeo and
1064        tutorial_tracer_adjsens (+ TLM output).
1065    o tools/OAD_support and (verification/*/) code_oad:
1066      - OAD_support/cb2mGetModules.csh: add PACKAGES_CONFIG.h in header file to
1067        module conversion ; remove unneeded CPP_EEOPTIONS.h.
1068      - code_oad/CPP_OPTIONS.h: remove PACKAGES_CONFIG.h and use a more standard
1069        version (closer to model/inc/CPP_OPTIONS.h).
1070    o model/src:
1071      - remove parameter "useOldFreezing" from PARAMS.h and push it to the
1072        retired list of parameters (routine FREEZE has been replace by surface
1073        freezing (10.yrs ago) and by pkg/frazil (interior freezing).
1074    o pkg/gmredi:
1075      - add option (GM_CALC_TRANSP_FROM_VEL) to compute transport directly from
1076        velocity (same scheme but affects machine truncation) for GM_AdvForm.
1077      - update output of FWD experiments: front_relax.bvp,
1078        global_ocean.90x40x15.dwnslp, global_ocean.cs32x15 and ideal_2D_oce.
1079    
1080    checkpoint64q (2013/11/17)
1081    o verification:
1082      - generate new output on baudelaire (gfortran, -ieee) for OpenAD experiments
1083        tutorial_global_oce_biogeo and global_ocean.90x40x15.
1084      - generate new output (growth & melt) for seaice_itd experiment after
1085        updating the input pickup_seaice files (previously wrong).
1086    o pkg/cost:
1087      - define a "final cost function" for each tile, and use GLOBAL_SUM_TILE_RL
1088        (instead of _GLOBAL_SUM_RL) to get the final cost from all procs & threads:
1089        o this fixes global-sum value if multi-threads (since GLOBAL_SUM_RL
1090          cannot be applied to var in common block).
1091        o allows to get results independent of tile-per-proc setting (if using
1092          slower GLOBAL_SUM_SEND_RECV option).
1093      - update accordingly: seaice_cost_final.F, shelfice_cost_final.F,
1094        thsice_cost_final.F and ecco_cost_final.F (this one affects lab_sea
1095        forward gradients: update output).
1096      - update */code_oad/externalDummies.F by adding dummy GLOBAL_SUM_TILE_RL
1097        S/R and, for most exp., also comment out GLOBAL_SUM_R8.
1098    o pkg/mom_common:
1099      - move to pkg/mom_common and model/src (previously in tutorial_deep_convection
1100        code) 2nd version of isotropic 3-D Smagorinsky code interface: strain and
1101        viscosity are locally declared in dynmics.F and pass as argument to CALC_GW;
1102        ensure that all field value that are used are set.
1103    o tutorial_deep_convection (smag3d):
1104      - add missing scaling in mom_calc_smag_3d.F;
1105      - set smag3D_coeff in input.smag3d such that results do not change.
1106    o pkg/dic:
1107      - change dic_cost.F to compute cost on each tile first and then apply
1108        GLOBAL_SUM_TILE_RL: this affects forward gradient of AD experiments
1109        tutorial_dic_adjoffline & tutorial_global_oce_biogeo; update output.
1110      - remove kLev argument and use GLOBAL_SUM_TILE_RL in tracer_meanarea.
1111    o eesupp/src & pkg/mdsio:
1112      - remove gather/scatter_vector.F (from eesupp) and mdsio_read/writevector.F
1113        (from pkg/mdsio) since they are no longer used for tape IO.
1114      - move simple C subroutine "setdir.c" from pkg/compon_communic to eesupp/src
1115        (+ keep a copy in pkg/atm_ocn_coupler).
1116    o verification/isomip:
1117      - split domain in 8 squared tiles (instead of just 2) for FWD, AD & OAD tests.
1118    o tools/build_options:
1119      - optfile linux_amd64_ifort11, fast (no ieee) case:
1120        to get a working restart for all experiments, add "-fp-model source"
1121        to FOPTIM (also remove "-opt-streaming-stores auto" <- this is the default).
1122    
1123    checkpoint64p (2013/10/20)
1124    o pkg/autodiff:
1125      - adread_adwrite.F: when type and length do not match ALLOW_AUTODIFF_WHTAPEIO
1126        criteria, return to simple (default) tape IO format.
1127    o pkg/mdsio (+ eesupp/src):
1128      - rewrite/simplify tape-IO S/R (new S/R MDS_READ/WRITE_TAPE replace
1129        previous MDSREAD/WRITEVECTOR) with 2 array argument from each type (R4/R8);
1130      - fix globalFile and singleCpuIO options using simpler global mapping.
1131      - new pairs of scatter/gather vector S/R (one for each type, generated from
1132        template) corresponding to simpler global mapping.
1133      - adread_write.F: switch to new S/R (but leave old calls commented) and write
1134        to globalFile when parameter globalFiles is set to True.
1135      - switch on useSingleCpuIO in AD experiments: global_ocean.90x40x15 & isomip.
1136    o pkg/autodiff:
1137      - adread_adwrite.F: add a hack for RS arrays (when RS=real*4);
1138        with ALLOW_AUTODIFF_WHTAPEIO defined, since corresponding (real*4) is
1139        missing, just add a STOP if array type do not match.
1140    o pkg/exf:
1141      - to allow to use seaice-fraction from pkg/exf in other pkgs than pkg/seaice:
1142         rename CPP option EXF_ALLOW_SEAICE_RELAX to EXF_SEAICE_FRACTION
1143         and rename array obsSIce to exf_iceFraction.
1144    o tutorial_deep_convection:
1145      - add 1rst version of isotropic 3-D Smagorinsky code (from Louis-Philippe),
1146        for now all in this exp. code dir.
1147      - add secondary test using Smag-3D viscosity (keep very low backgroud visc for
1148        testing) and flux-limter advection scheme for Temp. (no explicit diffusion).
1149    o eesupp/src:
1150      - added SINGLE_DISK_IO option because reading of parameter files on
1151        very large number of processors did not work with existing set-up
1152    
1153    checkpoint64o (2013/09/25)
1154    o pkg/atm_phys & atm_compon_interf:
1155      - allows for coupling of gray-atmosphere (atm_phys) with ocean.
1156    o tools/build_options:
1157      - switch from "-fPIC" to "-mcmodel=medium" in optfiles: linux_amd64_gfortran
1158        & linux_amd64_ifort11 and in linux_amd64_g77 & linux_amd64_open64 also
1159        remove CPP setting (was identical to genmake2 default).
1160    o pkg/gmredi & model/src: Some updating and work done on the residual model.
1161      - created new file model/src/calc_eddy_stress.F to calculate the eddy stress.
1162      - fixed up the calculation of the eddy stress and how it is added to the
1163        external forcing via taueddy_external_forcing.F
1164      - at the moment, it is very experimental and only works with the variable eddy
1165        diffusivity calculated in gmredi_k3d.F
1166    o pkg/seaice/seaice_check.F: add a check to catch the case of specifying
1167        lw/swfluxfile instead of lw/swdownfile in data.exf together with pkg/seaice
1168    o testreport (& tools/do_tst_2+2):
1169      - for MPI test, set default COMMAND to 'mpirun -v -np TR_NPROC ./{executable}'
1170    o tools/build_options: linux_amd64_gfortran & linux_amd64_ifort11:
1171      - remove CPP='cpp -traditional -P' (this is genmake2 default)
1172      - add switch (for big setups) to use 'medium' memory-model (but leave it
1173        commented out for now). Note: needed with FC 19 to compile big setups.
1174    o pkg/atm_compon_interf:
1175      - regroup per field origin (model & pkgs) the coupling storage routines
1176         (which accumalate in time each coupling field)
1177      - move bi,bj loops inside atm_store_my_data.F and store also wind-stress;
1178        update accordingly + simplify aim_do_physics.F
1179    
1180    checkpoint64n (2013/08/26)
1181    o pkg/bbl:
1182      - update formulation to reduce dispersion of tracer properties in bbl
1183      - replaced horizontal and vertical transport parameters with velocities
1184      - changes results for verification/global_with_exf.yearly
1185    o verification/halfpipe_streamice:
1186      - change to matrix construction; update both Fwd & AD output.
1187    o verification/tutorial_tracer_adjsens:
1188      - OpenAD test: switch to vector-invariant momentum since fluxform with
1189        rStar causes problems with OpenAD; update output.
1190    o tools:
1191      - genmake2: define a common prefix for all temp-file names ; move them
1192        to local /tmp disk (but would be easy to move them back);
1193      - xmakedepend: apply the same switch for temp-files.
1194    o pkg/offline:
1195      - changes for use with rStar (NLFS): assume that we continue to provide
1196        UVELMASS/hFacW_ini & VVELMASS/hFacS_ini (hFacWi,S_ini as written in grid
1197        output files) and apply r* scaling at each time-step (function of the time
1198        varying Eta field); use normal pickup files (needed for restart with NLFS).
1199    o adjoint with OpenAD:
1200      - move OpenAD-specific files from verification/OpenAD/code_oad_all to a new
1201        package openad.  This package has to be compiled for all runs with OpenAD
1202        instead of specifying code_oad_all as a modification directory.
1203      - link the fortran templates from tools/OAD_support to the build directory
1204        for preprocessing to avoid conflicts between different setups compiled
1205        simultaneously and simplify cleanup.
1206    o pkg/exf:
1207      - in exf_getforcing.F: comment out most of the EXCH calls (fields used by
1208        main model or other pkgs are exchanged in EXF_MAPFIELDS).
1209    o model/src:
1210      - do_stagger_fields_exchanges.F: skip EXCH calls when using pkg/offline
1211        (similar to do_fields_blocking_exchanges.F).
1212    o tools/genmake2:
1213      - remove TAF output src code just before calling staf (when not doing a fresh
1214        built, will stop if things go wrong with staf).
1215      - fix target "adobj" (left from TAF version-2 transition)
1216    o pkg/diagnostics:
1217      - add a parameter to track the status of pkg/diagnostics activation;
1218        this replace/extend the use of logical param "settingDiags" (to check
1219        when adding diag to the list) to also check any DIAGNOSTICS_[]FILL* call.
1220        New S/R to print error message and stop when pkgStatus is not right.
1221      - to try: add a warning when "data.diagnostics" exist but useDiagnostics=F.
1222    
1223    checkpoint64m (2013/08/13)
1224    o model/inc:
1225      - move FCORI_MACROS.h from PARAMS(_MACROS).h to GRID_MACROS.h (left from
1226        8 yrs ago modif when Coriolis arrays were moved from PARAMS.h to GRID.h)
1227    o pkg/kpp & aim_v23:
1228      - only call DIAGNOSTICS_FILL when useDiagnostics=TRUE.
1229    o pkg/seaice:
1230      - restore (last time on 2011/12/24) ability to compile pkg/seaice with
1231        undefined pkg/exf ALLOW_ATM_TEMP or ALLOW_RUNOFF CPP-options.
1232      - only call DIAGNOSTICS_FILL when useDiagnostics=TRUE.
1233    o eesupp/src:
1234      - fix check for overlap-size argument (myOLn.GT.MAX_OLY_EXCH)
1235        in exch1_rx[_ad].template (thanks to Francois Lefeuvre report).
1236    o switch to TAF version-2:
1237      - add flow directives to "freeze" naming convention for ad-routines that
1238        are used in I/O routines of adjoint state and associated common blocks
1239        that are used in adcommon.h (backward compatible with version-1)
1240      - update all ad-optfiles (in tools/adjoint_options + few local to some
1241        verification exp) to switch to latest TAF version (currently 2.5.5);
1242        merge "*_mpi" adoptfiles into the corresponding non-mpi (but commented
1243        out except for diva).
1244      - the major change with TAF version-2 is that both the differentiated
1245        routines and the forward routines (new) are returned as part of the TAF
1246        output source code. Update genmake2 accordingly.
1247      - new output for AD experiment tutorial_global_oce_biogeo (better AD gradient
1248        with version-2 when compared to TLM or FWD gradient); other experiments
1249        output show minor changes (machine truncation level); update the few AD &
1250        TLM output with 12 matching digits only (some prior to version-2 switch).
1251    
1252    checkpoint64l (2013/08/05)
1253    o model/src:
1254      - in dynamics.F, skip the call to CALC_VISCOSITY if momViscosity=F
1255      - main_do_loop.F: no longer includes additional (AUTODIFF) header files
1256        when using TAF but only if using OpenAD.
1257    o pkg/mom_common+fluxform+vecinv:
1258      - always set horiz. viscosity arrays to background value before calling
1259        MOM_CALC_VISC (in MOM_FLUXFORM & MOM_VECINV) and call S/R MOM_CALC_VISC
1260        only when using variable horiz. viscosity (useVariableVisc=T);
1261      - simplify mom_vecinv.F (only 1 block for momViscosity).
1262    o pkg/mom_common: variable horiz. viscosity in NH code
1263      - move horiz-viscosity 3-D arrays viscAh_W & viscA4_W (used in calc_gw.F)
1264        from model/inc/NH_VARS.h to pkg/mom_common/MOM_VISC.h
1265      - store in common block (in MOM_VISC.h) logical parameters: useHarmonicVisc,
1266        useBiharmonicVisc & useVariableVisc.
1267      - fix old bug (already in 1rst implementation of variable horizontal viscosity
1268        in calc_gw.F, version 1.27, 2006/06/20):
1269        horizontal bi-harmonic viscosity in gW was missing when wiscA4W=0
1270        even if variable bi-harmonic viscosity (e.g., viscA4Grid) was non-zero.
1271      - change background horiz viscosity in vertical momentum (gW) to always be
1272        viscAhW,viscA4W (instead of switching to viscAhD, viscA4D when using
1273        any type of variable viscosity, e.g., viscAh/4Grid)
1274      - change default value of viscAhW,viscA4W to viscAhD,viscA4D (instead of
1275        viscAh,viscA4) which default to viscAh,viscA4 :  this avoid missing
1276        horiz. viscosity in W eq when just setting viscAhD/Z,viscA4D/Z (since
1277        default viscAh,viscA4 is zero).
1278    o model/src:
1279      - extend length of drC & recip_drC from Nr to Nr+1.
1280    o Divided Adjoint (DIVA) with MPI:
1281      - genmake2: do not create local ./mpi_headers dir when no file to copy into.
1282      - remove option ALLOW_DIVIDED_ADJOINT_MPI (replaced by ALLOW_DIVIDED_ADJOINT
1283        and ALLOW_USE_MPI) from model/src code and from ECCO_CPPOPTIONS.h.
1284    
1285    checkpoint64k (2013/07/23)
1286    o tools/OAD_support:
1287      - avoid the need for file "oadtempflile" in insertTemplateDir.bash
1288        and remove it from genmake2.
1289    o tools/build_options:
1290      - remove MPI_HEADER_FILES_INC setting (no longer used) and comment out
1291        MPI_HEADER_FILES list (let genmake2 find the missing headers)
1292    o verification/halfpipe_streamice:
1293      - change to driving stress formulation; update both Fwd & AD output.
1294    o tools/genmake2 and Divided Adjoint with MPI:
1295      - remove default setting of MPIINCLUDEDIR from $MPIHOME (always been broken);
1296      - only create local ./mpi_headers dir if using MPI and MPIINCLUDEDIR is set;
1297      - add new variable (LOCAL_MPI_HEADERS, replace MPI_HEADER_FILES_INC) in
1298        Makefile, which is set by genmake2, and check which mpi-headers are needed.
1299        Note: need to update adjoint_options/adjoint_diva_mpi accordingly.
1300      - update target "CLEAN" (to also remove ./mpi_headers/ dir).
1301    o testreport:
1302      - changes for Divided Adjoint Run: when file "run_ADM_DIVA" is present,
1303        perform additional runs (number of additional runs is "add_DIVA_runs" taken
1304        from file run_ADM_DIVA ; should match "nchklev_3" in file "code_ad/tamc.h").
1305    o verification/lab_sea (AD test):
1306      - change to test Divided Adjoint Run in this set-up (both standard AD test
1307        and 2 secondary AD test: noseaice + noseaicedyn); drop the evp AD test.
1308    o pkg atm_ & ocn_compon_interf:
1309      - remove cpl_earlyExpImpCall=F option (was mainly a hack added for the old
1310        staggerTimeStep implementation) and disable (retired) corresponding
1311        parameter.
1312    o pkg/offline:
1313      - comment out unused field-array: ICEM, ConvectCount, hflx[01], icem[01];
1314      - add S/R OFFLINE_CHECK to print offline parameter summary
1315        and stop if loading a file that is not used;
1316      - enable to calculate GMRedi tensor, KPP mixing and convective index
1317        when the corresponding file(s) is/are not specified (but pkg is used).
1318      - comment out resetting of monitorFreq (to endTime) since it still useful
1319        for monitoring CFL numbers and checking offline fields.
1320    o OpenAD:
1321      - do not define OAD_DEBUG (in tools/adjoint_options/adjoint_oad) to get
1322        smaller standard output) and generate new (smaller) output (on baudelaire
1323        using gfortran with -ieee) for exp. tutorial_tracer_adjsens
1324    o model/src:
1325      - call EXTERNAL_FORCING_SURF outside bi,bj loops (in do_oceanic_phys.F),
1326        (where external_forcing_adjust was called) and change list of arguments;
1327      - merge external_forcing_adjust.F into external_forcing_surf.F
1328      - put surface relaxation of SST & SSS in new S/R (forcing_surf_relax.F)
1329        which also contains balancing surface relaxation (ALLOW_BALANCE_RELAX,
1330        previously in file "balance_relax.F", now removed); remove corresponding
1331        arrays in FFIELDS.h.
1332      - EXTERNAL_FORCING_SURF is now called when using pkg/offline; implement
1333        a hack for getting back surfaceForcingS (loaded from file) when using
1334        ALLOW_OLD_VIRTUALFLUX (pkg/dic, in DIC_OPTIONS.h) in offline set-up.
1335      - update output of AD test experiment global_ocean.cs32x15.seaice_dynmix
1336        (was getting only 11 digits for AD-grad, due to different truncation
1337         error in AD code).
1338    
1339    checkpoint64j (2013/07/04)
1340    o pkg/offline:
1341      - to enable the use of other features with pkg offline (e.g., obcs),
1342        also call S/R DO_OCEANIC_PHYS in offline run - more modifs to come.
1343      - comment out "allowFreezing" (now active) in 2 offline testing exp.
1344    o pkg/exf ALLOW_RUNOFTEMP
1345      - fix sign and make compatible with temp_EvPrRn .NE. UNSET_RL
1346      - ahdded RUNOFTEMP test to verification/global_ocean.cs32x15/input.seaice
1347      - changes verification/global_ocean.cs32x15/results/output.seaice.txt
1348    o pkg/atm_phys:
1349      - allows to add some damping on uVel,vVel (strength only function of k).
1350    o verification, ad-tests:
1351      - reduce length of the simulation for AD test: global_ocean.cs32x15.seaice,
1352        global_ocean_ebm and offline_exf_seaice.thsice.
1353    o verification/halfpipe_streamice:
1354      - found a bug in s/r pkg/streamice/streamice_advect_thickness which caused
1355        flux input boundary conditions to be ignored; a fix for this bug changed
1356        verification results for forward test.
1357      - add adjoint test.
1358    o pkg/ptracers:
1359      - allow to restart without SOM pickup (resetting SOM to zero).
1360    o pkg/gmredi:
1361      - New parameterisation for the calculation of K and (GM_PsiX,GM_PsiY) added.
1362      - It uses mixing length theory and suppression by steering level effects to
1363        calculate a diffusivity used in the Redi tensor (see Bates et al., submitted
1364        to JPO, for more details).
1365      - It also uses the diffusivity to calculate an eddy induced streamfunction
1366        based on a PV closure (rather than a buoyancy closure as in GM).
1367      - New files added to pkg/gmredi:
1368        gmredi_k3d.F calculates the diffusivity for the Redi tensor and the eddy
1369          induced overturning streamfunction (called from gmredi_calc_tensor)
1370        gmredi_calc_eigs.F calculates the eigenvalues and eigenvectors required
1371          for use in gmredi_k3d
1372        gmredi_calc_urms.F calculates the the rms eddy velocity used to calculate
1373          the eddy diffusivity
1374    
1375    checkpoint64i (2013/06/18)
1376    o pkg/cheapaml:
1377      - take src files from MITgcm_contrib/verification_other/offline_cheapaml/code
1378        that enable the use of seaice (pkg/thsice thermo & pkg/seaice dynamics)
1379        with pkg/cheapaml.
1380    o utils/python: add subpackage for cubed sphere function, first example is
1381        simple cs.pcol to plot 2D fields on a map
1382    o pkg/streamice:
1383      - This is a new package in MITgcm, which solves dynamic equations for ice
1384         sheets and ice streams
1385      - At the moment it is independent of atmosphere/ocean dynamics, or any
1386        other physical packages in MITgcm, even ShelfIce (although it is anticipat-
1387        ed that this will change)
1388      - There is a new verification exercise that tests it, halfpipe_streamice,
1389        evolves a 40x80 km ice stream/ice shelf (at coarse resolution) in a
1390        rectangular embayment
1391      - halfpipe_streamice is forward-only for now, will have TAF test soon
1392      - for questions, email dgoldber@mit.edu
1393    o pkg/thsice:
1394      - fix filling of snow-precip diagnostic (SIsnwPrc) (left from the removing
1395        of snowPrc from common bloc, on May 2nd, thsice_step_fwd.F revision 1.40);
1396      - remove diagnostics 'SI_FrcFx' ( now identical to 'SI_Fract' with new
1397         call sequence: ice-Thermo(thsice),ice-Dyn,ice-Advect );
1398      - allow precip from pkg/cheapaml to make snow over seaice.
1399    o pkg/cfc:
1400      - move in separated header file (CFC_ATMOS.h) time-serie arrays of Atmos CFC
1401      - remove atmos CFC 2-D arrays from common bloc (now local variables)
1402      - change some hard-coded constant to run time parameter for reading and
1403        and interpolating atmospheric CFC ; keep same default as previously.
1404      - more flexible reading of Atmos CFC (number of records no longer hard-coded)
1405      - put arguments in standard order: myTime, myIter, myThid
1406      - use standard S/R GET_PERIODIC_INTERVAL for time interpolation of
1407        atmospheric CFC ; fix for the case myIter < PTRACERS_iter0.
1408      - fix calculation of surf tendencys for partial-cell and/or Non-Lin Free-Surf
1409      - new routine to print summary of CFC params and check for consistency.
1410    o pkg/seaice: add uice/vice to the parameter list of s/r seaice_advdiff,
1411      similar to thsice_advdiff.
1412      Note that for the B-grid case the routine parameters uc/vc are overwritten.
1413    o pkg/cfc:
1414      - change time interpolation for atmospheric CFC-11 (now same as for CFC-12);
1415        update output (CFC-11) of experiment cfc_example and tutorial_cfc_offline.
1416      - fix interpolation of atmphspheric CFC between Sorthern and Northern
1417        hemisphere value.
1418    o pkg/seaice:
1419      - allow to use seaice dynamics without pkg/exf (e.g., using pkg/cheapaml)
1420    o pkg/seaice: add Adams-Bashforth2 time discretization for ice dynamics;
1421                  so far only for JFNK-solver, turn on with SEAICEuseAB2 = .TRUE.
1422      - requires an additional time level that is stored in the pickup
1423      - you can start with AB2 from a pickup without this time level with
1424        pickupStrictlyMatch = .false.
1425    
1426    checkpoint64h (2013/05/26)
1427    o pkg/cheapaml:
1428      - replace one ()**.5 with SQRT + use temp var "cdu = tau/Du" (coare3_flux);
1429        affect machine truncation (but exp cheapAML_box still pass with 13 digits).
1430      - consistent treatment of uWind,vWind location: assume everywhere in
1431        pkg/cheapaml that they are on C-grid (@ uVel,vVel location)
1432        (Note: was already the case for Tair,Qair advection);
1433        add option (INCONSISTENT_WIND_LOCATION) to recover old results.
1434      - compute diabatic forcing only in the interior (excluding overlap regions)
1435      - fill in array "Qsw" (for short-wave heating);
1436      - add diagnostic for precip ; fill-in diagnostics for cheapAML state vars
1437        before any update (consistent with MITgcm state var diagnostics);
1438      - cheapaml_fields_load.F & cheapaml_init_varia.F : only fill outer edges if
1439        non periodic ; + adjusted for uWind,vWind (C-grid).
1440    o pkg/seaice:
1441      - remove dependence of pkg/seaice versus pkg/exf (file: pkg/pkg_depend) and
1442        add explicitly pkg/exf in experiments that currently use pkg/seaice.
1443      - allows to compile pkg/seaice without pkg/exf.
1444    o tools/OAD_support:
1445      - use a local copy (ourRWCPinBd) to ensure index ourRWCP stays within bounds
1446        of array "ourStepOf" in function rvNextAction (revolve.F90).
1447    o pkg/aim_compon_interf renamed to pkg/atm_compon_interf
1448      - change pkg name (to be used with other atmospheric physics pkg)
1449        but by-pass CVS when making the new pkg so that we keep the CVS history.
1450    o pkg/offline:
1451      - call OFFLINE_FIELDS_LOAD from pkg/offline/offline_init_varia.F
1452        (previously called from pkg/dic_surfforcing_init.F)
1453    o model/src:
1454      - re-order sequence of calls within packages_init_variables.F, using
1455        standard order, except for:
1456         DIAGNOSTICS_INIT_VARIA and OFFLINE_INIT_VARIA (called @ the top),
1457         CTRL_MAP_INI and OBCS_INIT_VARIABLES (called @ the bottom)
1458    o new pkg: atm_phys
1459      - add entry point and source code (previously in contrib
1460          verification_other/atm_gray/code_gray/) for new pkg "atm_phys"
1461        (atmospheric physics pkg from P. O'Gorman and T. Schneider, JCl, 2008).
1462      - re-order sequence of calls within packages_readparms.F,
1463         packages_init_fixed.F and packages_write_pickup.F
1464        (but skip packages_init_variables.F because of TAF issues).
1465      - update contrib/*/atm_gray/ experiment.
1466    o pkg/seaice (ITD code):
1467      - simplify and fix the writing of pickup-files for ITD case
1468    o pkg/seaice (ITD code):
1469      - introduce floe size dependent lateral melt for ITD case;
1470      - cleaning (avoid division by zero, change to f77 syntax, remove tabs)
1471      - update seaice_itd experiment main output.
1472    o pkg/thsice:
1473      - remove snowPrc from common block THSICE_FLUX, in THSICE_VARS.h and
1474        declared it locally (without bi,bj) in thsice_main.F & aim_do_physics.F;
1475        changed accordingly pkg/atm2d.
1476    
1477    checkpoint64g (2013/05/01)
1478    o pkg/exf ALLOW_RUNOFTEMP
1479      - if defined,  river and glacier runoff temperature can be read-in from
1480        runoftempfile; runoftempfile needs to have same format as runofffile
1481    o pkg/thsice (& pkg/bulk_force):
1482      - In case Energy-Reference-Level (ERL) is used (temp_EvPrRn=0), account
1483        for energy content of Precip + RunOff & Evap (like with pkg/exf).
1484      - change computation domain to always be the interior (without overlap).
1485      - fix bug (wrong overlap) when using EXF and stressReduction > 0.
1486    o verification/tutorial_global_oce_biogeo:
1487      - add preliminary OpenAD setup (still has problems)
1488    o pkg/seaice:
1489      - turn some parameters for choosing the convergence criterion of
1490        the inexact Newton method (JFNK) into runtime parameters for convenience
1491      - clean up seaice_calc_viscosities.F: remove/retire two options for
1492        SEAICetaZmethod (1,2), introduce area weighting for method 3; this changes
1493        the results of lab_sea/input because a division has been replaced by
1494        a multiplication with the reciprocal (sumNorm)
1495      - modify offline_exf_seaice/input.dyn_jfnk/data.seaice to improve
1496        convergence of solver (changes results, of course), and to test some
1497        new features
1498    o model/src:
1499      - remove unused (since Aug 2006) S/R SET_WRITE_GLOBAL_PICKUP and its call.
1500      - remove unused forcing field "dQdT" and associated parameter "dQdTFile".
1501      - move forcing adjustment (balancing surface forcing) in specific S/R
1502        where might also be applied exchanges (if needed) to forcing arrays.
1503    o pkg/shelfice:
1504      - allow to specify the Ice-Shelf mass per unit area (instead of
1505        shelficeLoadAnomaly) and do the conversion from one to the other
1506      - move loading from file of shelficeLoadAnomaly from SHELFICE_INIT_VARIA
1507        to SHELFICE_INIT_FIXED: (a) avoid some TAF recompution issues and
1508        (b) will be loaded in time (before calling INI_PRESSURE) in case it is
1509        needed in phi0surf for initial pressure calculation when useDynP_inEos_Zc
1510      - update isomip experiment forward output (get machine truncation error
1511        from conversion shelficeLoadAnomaly -> shelficeMass -> shelficeLoadAnomaly)
1512    o verification/offline_exf_seaice:
1513      revise data.seaice in input.thermo and input_ad and update results accordingly
1514        HO = 0.2, SEAICE_areaLossFormula = 2,
1515        SEAICE_growMeltByConv = .TRUE.,
1516        SEAICE_doOpenWaterMelt = .TRUE.,
1517      Improve consistency with input.thsice and fix the spurious 500m ice corners
1518    o verification/global_ocean.cs32x15:
1519      - set Energy Reference Level to liq. water @ 0 degC: temp_EvPrRn=0.,
1520        in icedyn (thsice+seaice-dyn) test and update output.
1521    o verification/offline_exf_seaice:
1522      - adjust list of tested variables (with testreport) and update
1523        standard test output with better slection of monitored fields.
1524    o pkg/cd_code:
1525      - swtich off Adams-Bashforth on the 1rst iteration. Update output of
1526        experiment lab_sea.hb87
1527    o tools/genmake2:
1528      - change default makedepend from the system default to tools/xmakedepend:
1529        When no makedepend is specified, select tools/xmakedepend it the test pass,
1530        otherwise select the system default (if exist and pass the test) or
1531        try to build cyrus-makedepend ; stop if none of the 3 works.
1532    o pkg/exf & pkg/thsice:
1533      - In case Energy-Reference-Level (ERL) is used (temp_EvPrRn=0), account
1534        for energy content of Precip + RunOff & Evap. Assumes:
1535       1) Rain has same temp as Air.
1536       2) Snow has no heat capacity (consistent with seaice & thsice pkgs)
1537       3) Run-Off comes at the temp of surface water (with same Cp)
1538       4) Evap over ocean is released to the Atmos @ surf-temp (=SST); should be
1539        put directly into Latent Heat flux & should use water-vapor heat capacity.
1540       5) Evap over snow/seaice (pkg/thsice) assumes constant Lf+Lv (consistent
1541        with snow having no Cp) => water vapor is released to Atmos @ 0^oC (=ERL).
1542    o pkg/seaice: simplify the use of CPP flags in JFNK-related files
1543        (compile when SEAICE_ALLOW_JFNK is defined)
1544    o pkg/thsice:
1545      - fix oceanic flux diagnostics & timeave (left from new sequence of calls
1546        implementation): move THSICE_AVE call after the advection (called directly
1547        from thsice_do_advect.F).
1548    o verification/global_ocean.90x40x15 and OpenAD:
1549      New experiment for OpenAD is identical to the one in input_ad except that
1550        multiDimAdvection=.FALSE.,
1551      There is still an issue with this.
1552    o pkg/thsice:
1553      - account for ice velocity (ocean relative velocity) in turbulent heat flux
1554        at the base of the ice; update output of global_ocean.cs32x15 (icedyn)
1555        and offline_exf_seaice (main test).
1556    
1557    checkpoint64f (2013/03/31)
1558    o verification/OpenAD:
1559      - new (smaller, without OAD_DEBUG) output_oadm.txt generated using gfortran.
1560    o verification/isomip, pkg/shelfice and OpenAD:
1561      - add OpenAD setup to this exp and make shelfice package work with OpenAD
1562    o verification/tutorial_global_oce_biogeo:
1563      - update AD and TLM output after turning off ALLOW_FE (in DIC_OPTIONS.h)
1564    o verification/offline_exf_seaice:
1565      - replace adjoint experiment (now similar to fwd input.thermo/ setup).
1566    o verification/tutorial_tracer_adjsens, pkg/ptracers and OpenAD:
1567      - add OpenAD setup to this exp and make ptracers package work with OpenAD
1568    o pkg/seaice/seaice_evp.F:
1569       mask the asymmetric contribution of the ice-ocean stress (when
1570       the turningAngle is non-zero) over open water to avoid stripes
1571       in the EVP-solutions after many EVP-substeps. This does not change
1572       the verification experiment (because turningAngle=0 in that experiment),
1573       but will affect other EVP solutions with turningAngle.ne.0
1574    o verification, AD & TLM output:
1575      - new TAF version 2.3.10 (previously 2.3.8) add more parenthesis in multiple
1576        additions and multiplications which affect results at machine truncation
1577        level. Update few AD output (1D_ocean_ice_column, bottom_ctrl_5x5,
1578        lab_sea.noseaicedyn & offline_exf_seaice) and TLM output
1579        (1D_ocean_ice_column & tutorial_tracer_adjsens.som81) which had only 12
1580        digits of matching.
1581    o pkg/seaice:
1582       modify lsr-algorithm so that it vectorizes AND converges by using a
1583       "zebra" method: split vector loop into two with step size 2; this
1584       solves a general convergence problem for the JFNK solver on a vector
1585       computer. It has the potential to even improve convergence for
1586       non-vector machines, but it does change the results so it is turned
1587       off by default. To turn on define CPP-flags SEAICE_VECTORIZE_LSR and
1588       SEAICE_VECTORIZE_LSR_ZEBRA in SEAICE_OPTIONS.h
1589    
1590    checkpoint64e (2013/03/05)
1591    o pkg/ecco and several verification experiments:
1592       Remove special versions of the_model_main.F, the_main_loop.F, forward_step.F
1593       from ecco package, and revert to unified routine in model/src/
1594       Adjust verification experiments accordingly, especially gloal_oce_llc90
1595       Should conclude long-standing work by Gael to reconsile the_main_loop with
1596       ECCO and will enable OpenAD's revolve loop in ECCO setup.
1597    o pkg/generic_advdiff:
1598      - implement compressible flow method for multi-dim advection (similar to
1599        gad_som_advect.F); add new option "GAD_MULTIDIM_COMPRESSIBLE" (since
1600        TAF generates many recomputations) to use it; no yet coded with implicit
1601        vertical advection.
1602      - change experiment advect_cs (new output) and advect_xy (same output)
1603        to test compressible flow multi-dim advection.
1604    o pkg/generic_advdiff:
1605      - fix SOM advection for unusual cases (linear Free-Surf in r*, other
1606        cases where linear Free-Surf is not @ k=1, e.g., useShelfIce)
1607    o pkg/seaice:
1608      - fix bug in the no-slip implementation in seaice_calc_strainrates.F, this
1609        bug affects two verification experiments (lab_sea and lab_sea.hb87),
1610        recover old (wrong) results by setting noSlipFac = 2. in
1611        seaice_calc_strainrates.F;
1612      - add another averaging method for etaZ (etaZmethod=3), a mix of 2 and 0
1613      - add runtime parameter SEAICE_JFNKepsilon for that finite difference
1614        gradient in the Jacobian times vector operation (s/r seaice_jacvec)
1615      - fix line search in seaice_jfnk.F (s/r seaice_jfnk_update)
1616    o pkg/seaice: reorganize seaice_lsr.F to be able to reuse more code:
1617      - new subroutines seaice_lsr_tridiagu/v
1618      - introduce loop bounds i/jmin/max to be able to use a restricted
1619        additive Schwarz method, but not used for now.
1620      - rename SEAICE_CALC_LSR_COEFFS into SEAICE_LSR_CALC_COEFFS
1621      - use new subroutines seaice_lsr_tridiagu/v in s/r seaice_preconditioner
1622    o OpenAD support
1623       Reorganize S/R call for overall time-stepping loop to facilitate
1624       OpenAD revolve loop replacement
1625       (new S/R main_do_loop.F)
1626    o model/src:
1627      - add 3-D array 3rd dimension to argument list of S/R ADAMS_BASHFORTH2/3;
1628      - pkg/cheapaml: remove local S/R ADAMS2d and use instead standard S/R
1629        ADAMS_BASHFORTH2.
1630    o pkg/cheapaml:
1631      - add new parameter (default=F, same as before) to disable full domain
1632        (including land) periodicity in X & Y dir.
1633      - new S/R CHEAPAML_COPY_EDGES to copy relaxation field into edges of
1634        prognostics field ; merge the 2 S/R cycle_2d_tracer and timestep_2d_tracer
1635        into single S/R CHEAPAML_TIMESTEP.
1636    
1637    checkpoint64d (2013/02/17)
1638    o pkg/monitor (angular momentum):
1639      - do not add Eta contribution to the total AM if using rigid-lid;
1640      - correct for Adams-Bashforth in zonal-wind part (instead of in AM_eta).
1641      - horizontal discretisation: compute Zonal wind contribution separately for
1642        each component (instead of from cell centered averaged) and use the 4
1643        grid-cell corner averaged value of Omega*(R*cos_Phi)^2 in AM_eta part.
1644      - Check that AM is conserved with linear dynamics (momAdvection=F and linear
1645        FreeSurf) if using vectorInvariant momentum.
1646    o model/src (horizontal grid):
1647      - move initialisation of all horizontal grid arrays to null value
1648        from specific horizontal grid S/R to main S/R INI_GRID;
1649      - add 2 new arrays to project model C-grid velocity on to zonal direction
1650        (similar to AngleCosC & -AngleSinC but at U and V point location) and
1651        compute them in S/R CALC_GRID_ANGLES.
1652    o pkg/seaice: replace a hard coded parameter by a runtime parameter
1653        SEAICE_JFNK_tolIter
1654    o pkg/seaice: introduce a restricted additive Schwarz (RAS) method in
1655        preconditioner for JFNK (run LSR into the overlaps as far as possible,
1656        i.e OLx/y-2, but overwrite the solution in the overlaps)
1657      - extend loop range in seaice_calc_viscosity
1658      - add new parameters SEAICE_OLx/y (default = OLx/y-2)
1659      - add flexible loop ranges to seaice_preconditioner, seaice_calc_lsr_coeffs
1660      - slightly modify loops in tridiagonal solver lsr-preconditioner
1661      - by default remove the extra exchange in seaice_preconditioner with a
1662        replacement of an undocumented CPP flag by SEAICE_PRECOND_EXTRA_EXCHANGE
1663      - modify offline_exf_seaice so that old results without RAS are reproduced
1664        for output.dyn_jfnk.txt
1665      in seaice_fgmres.F (unrelated to RAS)
1666      - add a cpp-flag option for a re-ordered mapping (potentially more
1667        efficient), but because this changes the results, turn it off by
1668        default
1669      - replace the save statement by local common blocks
1670    o utils/matlab:
1671      - fix tile-offset in rdmnc.m when output was produced using EXCH2.
1672      - update cs_grid/bk_line scripts to use load_grid.m (in utils/matlab)
1673        instead of local script "load_cs.m".
1674    o pkg/seaice:
1675      - fix a serious bug in seaice_fgmres.F, s/r seaice_scalprod, connected
1676        to the scalarProductMetric and the unrolling. By chance this does not
1677        change the verification experiment, because of the particular domain
1678        decomposition
1679    o pkg/diagnostics:
1680      - change default missing_value from UNSET_RL to -999.
1681    o pkg/layers: improve vectorization of layers_fluxcalc.F
1682      - step 1: split loops, make TatU/V 2D arrays. This alone reduces the cpu
1683        time spent in this routine by more than a factor of 3 on an NEC-SX8
1684      - step 2: replace search algorithm by a bisection algorithm found in
1685        Press et al. Numerical Recipes in Fortran. This algorithm can be
1686        vectorized and finds the correct bin in approx. log2(Nlayers) steps.
1687        For now, use this algorithm only for TARGET_NEC_SX defined.
1688      - moved the search algorithm into a separate subroutine, that is kept
1689        within the same file for automatic inlining.
1690      - modified catching potential errors
1691    o pkg/ecco:
1692      - add compile switches ALLOW_SHALLOW_ALTIMETRY and ALLOW_HIGHLAT_ALTIMETRY.
1693    o model/src, pkg/autodiff, pkg/ctrl, pkg/grdchk :
1694      - modifications for ALLOW_GENTIM2D_CONTROL
1695      -- forward_step.F, the_main_loop.F : pass options and arrays for adjoint tapes.
1696      -- load_fields_driver.F : add call to CTRL_MAP_GENTIM2D( myTime, myIter, myThid )
1697      -- add xx_gentim2d0/1 in ctrl_ad_check_lev1_dir.h checkpoint_lev1_directives.h etc
1698      -- use ctrl_swapffields.F (new) instead of exf_SwapFFields.F in ctrl_get_gen.F
1699    o model/src:
1700      - account for moist thermodynamics in (dry) potential temperature equation;
1701        update results of experiments: aim.5l_cs (x2), fizhi-cs (std + aqualev)
1702        and cpl_aim+ocn.
1703      - also switch to standard compiler (gfortran, was using ifort previously)
1704        for fizhi-cs experiments reference output.
1705    o pkg/ctrl:
1706      - 1st step toward generic time-varying control variable (2D) via CPP option
1707        ALLOW_GENTIM2D_CONTROL
1708      - note new namelist ctrl_nml_genarr in data.ctrl
1709    o verification/global_ocean.cs32x15:
1710      - switch off OLD_THSICE_CALL_SEQUENCE (both forward and AD code) to use new
1711        thsice calling sequence and update "output.icedyn.txt" output file.
1712    o pkg/ptracers:
1713      - from Ryan A.: code to allow to restart a tracer at regular time interval
1714        specifying a reset frequency and a reset-phase (for each tracers).
1715    o pkg/thsice:
1716      - implement new sequence of calls for thsice+seaice:
1717          previously:   ice-Dyn,ice-Advect,ice-Thermo(thsice)
1718          new sequence: ice-Thermo(thsice),ice-Dyn,ice-Advect
1719      - allows (with temporary CPP option "#define OLD_THSICE_CALL_SEQUENCE"
1720        in CPP_OPTIONS.h) to recover old sequence;
1721      - update diagnostics for Intermediate State thsice diagnostics: now filled
1722        just before advection (instead of just after advection in old sequence);
1723      - update output of experiment offline_exf_seaice (standard test);
1724      - in global_ocean.cs32x15 exp., postpone output.icedyn.txt update
1725        by setting #define OLD_THSICE_CALL_SEQUENCE in CPP_OPTIONS.h
1726    o pkg/aim_v23:
1727      - use tiled array for aim_CO2 and surface wind speed for export to coupler;
1728      - use standard pkg/mdsio routines to read & write CO2 pickup file;
1729      - in-line S/R AIM_AIM2DYN_EXCHANGES in aim_do_physics.F;
1730      - Implement new sequence of calls for seaice advection (with thsice and
1731        seaice diffusion): do ice advection after ice-Thermodynamic (previously
1732        was done before); change aim_do_physics.F (split the bi,bj loops block);
1733      - use same CPP option (OLD_THSICE_CALL_SEQUENCE) to recover old sequence;
1734    o pkg/thsice:
1735      - add a missing EXCH of sIceLoad in thsice_main.F (ocean set-up) for the case
1736        where just seaice diffusion is used without seaice-dynamics.
1737    
1738    checkpoint64c (2013/01/18)
1739    o pkg/seaice:
1740      - add a parameter JFNKres_tFac that can replace JFNKres_t
1741        (= JFNKres_tFac*JFNKresidual before JFNK solver)
1742      - add a line search option to the JFNK solver
1743      - move update of u/vIce and computation of initial residual into a separate
1744        routine (same file); makes the code a little easier to read (?)
1745      - the line search requires computation of the residual and for some reason
1746        I cannot do the update of u/vIce at the beginning of the Newton loop
1747        without changing the results, so we move computation of the new residual
1748        also to the end of the Newton loop, even without the line search
1749    o pkg/mdsio:
1750      - write missing value (corresponding to undefined array value) to meta files;
1751        skip this if missing value is one (UNSET_RL would be a better value for the
1752        case of undefined missing value but it's current the default missing-value);
1753        Also update mdsio_read_meta.F (reading timeInterval & missing-value).
1754    o pkg/exf & thsice:
1755      - for diagnostics purpose, fill-up and update Qsw array (+ fill the
1756        diagnostics) even when SHORTWAVE_HEATING is #undef;
1757    o verification/cfc_example:
1758      - turn on pkg/layers with pkg/diagnostics (to test pkg/layers and to
1759        illustrate how to use it).
1760    o verification/offline_exf_seaice:
1761      in input: add SEAICErestoreUnderIce=.TRUE., and reduce size of forcing
1762        files to only one time-record.
1763      in input.thermo: narrow the 2 bands of low initial ice-concentration near
1764        N & S edges; switch on SEAICErestoreUnderIce=T; use pkg/diagnostics for
1765        snapshot output; same mcPheePiston value as in thsice with
1766        surf-current=0.2m/s.
1767      in input.thsice: similar set-up as in input.thermo (channel with same seaice
1768        initial conditions).
1769    o verification/cfc_example:
1770      - update file "data" with more standard choice (default rotationPeriod,
1771        exactConserv=T, reduce ivdc_kappa to 10, remove multiDimAdvection=F,
1772        set deltaTFreeSurf to deltaTtracer) and update the output.
1773    o pkg/layers:
1774      - fix bolus part so that it compiles with #undef GM_BOLUS_ADVEC;
1775      - ensure that "layers_bolus" is switched to False when useGMRedi=False.
1776    o verification/offline_exf_seaice:
1777      - set all {field}period to zero for constant-in-time forcing (not tested
1778        anywhere else).
1779    o verification/offline_exf_seaice:
1780      - dyn_lsr  : use pkg/seaice S/R (instead of pkg/thsice) to advect sea-ice;
1781      - dyn_jfnk : use pkg/thsice S/R (instead of pkg/seaice) to advect sea-ice.
1782    o model/src:
1783      - implement Finite-Volume method for (hydrostatic) presure gradient
1784        from S.-J. Lin (QJRMS 1997), for atmosphere using sigma-coordinate.
1785    o pkg/seaice: implement EVP* by Lemieux et al. (2012).
1786      - In order to be compatible with the default EVP code, this requires changing
1787        the EVP code around a little; and because any small change immediately
1788        breaks the lab_sea.hb87 verification experiment, the reference output is
1789        updated two times (each time the remaining aggrement was only 2 digits):
1790        - after replacing 1/dt by 1*recip_dt with a precomputed recip_dt
1791        - after replacing 1/(1+0.5*dt/tau) by a/(a+1), with a=2*tau/dt
1792        The adjoint test lab_sea.evp also needed to be updated.
1793      - Turn on EVP* by setting SEAICE_deltaTevp as before, and setting
1794        SEAICEuseEVPstar=.true.; for EVP* SEAICE_deltaTevp does not need to be
1795        a factor of SEAICE_deltaTdyn, and you can set the number of EVP steps
1796        explicitly with SEAICEnEVPstarSteps (thereby overriding the default of
1797        INT(SEAICE_deltaTdyn/SEAICE_deltaTevp)). Controlling EVP* is deliberately
1798        kept obscure, because I need to test it a little more.
1799    o pkg/cheapaml:
1800      - fix few incorrect type (_RL/_RS) in subroutine calls.
1801    o pkg/seaice:
1802      - new S/R SEAICE_MAP_RS2VEC (similar to SEAICE_MAP2VEC) to map _RS arrays
1803        to _RL vector; this fixes JFNK code when compiling with "-use_r4" option.
1804    o model/src:
1805      - add a warning if using select_rStar=2 with nonlinFreeSurf <> 4;
1806        change (in input_ad*/data) select_rStar from 2 to 1 for AD verification
1807        experiments global_ocean.cs32x15 & tutorial_tracer_adjsens (+ update output)
1808    o pkg/cheapaml:
1809      - replace "273.1 _d 0" by celsius2K in pkg/cheapaml/cheapaml.F and
1810        update output of experiment cheapAML_box.
1811      - store in CHEAPAML.h coeffs ssq[0:2] for saturation specific humidity,
1812        and set them only in one place (cheapaml_readparms.F).
1813      - replace "273.16 _d 0" by celsius2K & replace "3.14159 _d 0" by constant "PI"
1814      - remove re-setting of main-model parameter "celsius2K" (in cheapaml_readparms)
1815        and re-setting of cheapAML params "lath" & "p0" (in cheapaml_init_varia).
1816    o model/src/the_main_loop.F:
1817      - fix revision 129 : need both ALLOW_ECCO and ALLOW_ECCO_EVOLUTION.
1818    o pkg/seaice:
1819      - remove legacy branch code.
1820      - retire SEAICE_GROWTH_LEGACY and SEAICE_CAP_HEFF accordingly.
1821    o verification/*/code*/SEAICE_OPTIONS.h:
1822      - remove documentation for retired CPP flags (SEAICE_GROWTH_LEGACY,
1823        SEAICE_CAP_HEFF).
1824    o pkg/cheapaml:
1825      - use standard routine (S/R GET_PERIODIC_INTERVAL) to decide when it is time
1826        to load new forcing fields.
1827      - add missing "_d 0" where it's needed; + some editing (improve indentation).
1828      - remove switch to "-r8" compiler option (no longer needed) in verification
1829        cheapAML_box, keep same output (small trucation error differences).
1830    o verification/offline_exf_seaice:
1831      - add thermodynamics only test.
1832    o verification/cheapAML_box:
1833      - split the domain in 8 (2x4) tiles; add MPI and multi-threaded test;
1834        keep same output (same 14 digits for cg2d).
1835      - switch on "-r8" compiler option (some numerical values are missing
1836        the "_d 0") and update output (only 6 digits for cg2d were preserved).
1837    
1838    checkpoint64b (2012/12/24)
1839    o pkg/cheapaml:
1840      - remove un-used variables (Qnet,EmPmR) from pickup files.
1841      - store tendency of advected variables into cheapaml pickup file
1842        and fix the AB-2 restart.
1843    o verification/offline_exf_seaice and lab_sea adjoint:
1844      - switch to new code (#undef SEAICE_GROWTH_LEGACY).
1845      - switch to 4 time steps in offline, consistent with lab_sea.
1846      - match parameters from SEAICE_GROWTH_LEGACY branch in data.seaice.
1847      - update results after change of experiment seaice.
1848    o pkg/seaice:
1849      - remove option SEAICE_MULTICATEGORY; has been replaced with run-time
1850        parameter SEAICE_multDim. Issue a warning if SEAICE_MULTICATEGORY is
1851        still defined since SEAICE_multDim needs to be set to MULTDIM value (from
1852        SEAICE_SIZE.h) to recover previous #define SEAICE_MULTICATEGORY default.
1853    o model/src:
1854      - add run-time parameter to select CG2D solver minimum-residual solution
1855        (in case of a poor convergence).
1856    o pkg/seaice/seaice_lsr.F
1857      - move calculation of matrix coefficients into new
1858        S/R SEAICE_CALC_LSR_COEFFS; for now this routine remains in the same
1859        file; the main purpose of this change is to be able to reuse the code
1860        in S/R SEAICE_PRECONDITIONER
1861      - modify the computation of the residual so that the mass of sea-ice
1862        is not used twice; this simplifies the calculations, but since
1863        the residual is never used except when LSR_mixIniGuess.ge.4---and this is
1864        not tested in testreport---this does not affect the testreport results.
1865    o verification/seaice_obcs:
1866      - disable SEAICE_GROWTH_LEGACY; reset input files to match those of
1867        verification/lab_sea/input.salt_plume; changes results/output.txt*
1868    o model/src:
1869      - adapt quasi-hydrostatic formulation to work with p or p* coordinate.
1870    o pkg/seaice:
1871      - improve description of parameters in seaice_fgmres.F and start
1872        cleaning up the code
1873      - change name of SCALPROD to SEAICE_SCALPROD and modify meaning of
1874        second argument
1875      - add a metric based on grid cell area to SEAICE_SCALPROD; update
1876        results of offline_exf_seaice.dyn_jfnk
1877      - compute initial residual norm in seaice_jfnk based on SEAICE_SCALPROD
1878    o pkg/aim_v23:
1879      - fix an other bug in dissipation heating (grid-cell area was missing).
1880    o model/src + pkg/seaice:
1881      - add global (multi-tile) linear solver for pair of tri-diagonal system
1882        along X and Y lines, respectively for U and V component.
1883        Note: 1) MPI and cube-exchange not yet coded.
1884            2) probably not accurate for poorly conditioned / large size problem.
1885      - add option for SEAICE_LSR to use global (multi-tile) tri-diagonal solver;
1886        default: not compiled and not used.
1887    o pkg/seaice:
1888      - first attempt at a multi-threaded fgmres solver for the JFNK solver:
1889        introduce bi/bj loops and use global_sum_tile_rl instead of
1890        mpi_allreduce in seaice_fgmres.F
1891      - improve diagnostics output for fgmres solver (seaice_fgmres.F)
1892      - replace a few unnecessary goto statements by if-blocks  (seaice_fgmres.F)
1893      - add a verification experiment for JFNK in offline_exf_seaice
1894    o verification:
1895      - change (for now, only fwd test) offline_exf_seaice experiment:
1896        use a re-entrant channel with idealized coastline (trapezoidal shape)
1897        at southern boundary to explore seaice dynamics and thermodynamics
1898        with simple forcing. Main set-up has dynamics+thermo and SST relaxation;
1899        secondary test (input.thsice) use thermodynamics only with SST relaxation.
1900      - add seaice-dynamics only secondary test using LSR and pkg/thsice advection.
1901    o pkg/exf:
1902      - disable "sstExtrapol" when Nr=1
1903    o verification:
1904      - add new experiment "cheapAML_box" (simple 1 layer set-up from Bruno Deremble)
1905        to test pkg/cheapaml.
1906    o pkg/aim_v23 & pkg/shap_filt:
1907      - fix dissipation heating (erroneous gravity multiplication factor).
1908    o pkg/seaice:
1909      - remove unused field pressPre from jfnk solver
1910      - rename two subroutines in seaice_preconditioner.F
1911    o eesupp/src:
1912       - S/R MDSFINDUNIT avoids reserved unit numbers (scrUnit1, eeDataUnit ...)
1913    o pkg/seaice/seaice_preconditioner.F: fix preconditioner once again
1914       - remove wrong parts of the rhs and the lhs (were in there
1915         because I did not understand the concept of this preconditioner)
1916       - add an exchange between u- and v-sweep. This increases communication
1917         by a factor of two but improves the convergence of jfnk. Ideally,
1918         one would like the u- and v-sweep to be independent. So far within
1919         undocumented ifdefs
1920       - reorganize the extra computations for printing the residuals
1921    o tools/genmake2:
1922      - comment out the "mpif.h" include in NetCDF test programm (for MPI built)
1923        since it's not necessary (and was preventing to use MNC in some cases).
1924    
1925    checkpoint64a (2012/11/16)
1926    o pkg/autodiff:
1927      - improve pkg-internal logical parameter switch (inAd/inFwd mode) so that
1928        autodiff_readparms.F no longer depends on calling order (within
1929        packages_readparms.F) and no longer requires to include ${PKG}_PARMS.h):
1930        rename param turnFreeDriftInAdMode to SEAICEuseFREEDRIFTswitchInAd
1931        and change param SEAICEuseDYNAMICSinAdMode to SEAICEuseDYNAMICSswitchInAd.
1932    o pkg/obcs:
1933      - adding tidal velocity forcing capability to obcs
1934        for usage example, see verification/seaice_obcs/input.tides
1935    o pkg/seaice:
1936      - turn the LSR-relaxation parameters WFAU/V into runtime parameters
1937        SEAICE_LSRrelaxU/V
1938      - introduce runtime parameter SEAICEetaZmethod (=0 by default)
1939    o pkg/aim_v23:
1940      - implement heating from friction (bottom friction and stratospheric drag).
1941    o pkg/shap_filt:
1942      - fix diagnostic "SHAP_dKE" (was 2 time smaller); implement heating from
1943        dissipation but only for Shap_funct=2, active when addFrictionHeating=T.
1944    o model/src:
1945      - move AddMass common block from DYNVARS.h to FFIELDS.h; allow to read-in
1946        time-constant addMass field from file (addMassFile);
1947      - support for heating due to friction (and Kinetic Energy dissipation):
1948        add option, run-time switch and 3-D field array + support code ; each pkg
1949        or S/R can add heating contribution (if there is a sink of KE); the sum is
1950        accounted for as a Temperature tendency term (EXTERNAL_FORCING_T).
1951    o pkg/seaice:
1952      - complete merge of ITD code into seaice_growth.F
1953        from MITgcm_contrib/torge/itd/code/
1954        no verification so far, but Torge Martin tested
1955        "1-D test case and Beaufort set up;
1956        deliver okay results after 1 model year."
1957      - complete merge of SEAICE_SIZE.h into all relevant routines
1958      - move computation of eta at Z-points into calc_viscosities
1959        + introduce global field etaZ
1960        + add different methods for computing etaZ, for now the old
1961          method (simple averages of eta to Z-points) is hardwired
1962        + replace etaMeanZ by etaZ in seaice_lsr, seaice_calc_residual,
1963          seaice_preconditioner
1964      - simplify computations for SEAICE_ZETA_SMOOTHREG
1965      - seaice_preconditioner:
1966        + replace one remaining press by pressLoc (mistake)
1967        + adjust printing of residuals
1968      - improve I/O of diagnostics of JFNK in seaice_jfnk.F:
1969        + add (SEAICE.h) and rename some counters (initiliased in
1970          seaice_init_fixed.F)
1971        + add _BEGIN/END_MASTER (myThid)  around print statements
1972        + print total number of iterations and failures over SEAICE_monFreq
1973          interval to STDOUT
1974      - move control over output-messages by fgmres to seaice_jfnk to save
1975        some operations
1976      - move resetting initial guess for fgmres outside of seaice_fgmres_driver
1977        in order to make restarts with sol .ne. zero (fgmres with restarts)
1978        (seaice_jfnk.F, seaice_fgmres.F)
1979      - seaice_calc_l/rhs.F: replace maskW/S by maskInW/S; this fixes
1980        a serious convergence problem when open boundaries are involved
1981    o pkg/ggl90: fix computation of control volumes for the case of
1982      ALLOW_GGL90_HORIZDIFF (probably not used very often): move control volumes
1983      up half a grid cell from C-centered to W-centered (pointed out by C. Eden)
1984    o pkg/seaice: simplify seaice_evp by avoiding use of extra fields u/vIceC
1985    o pkg/autodiff
1986      - Add inAdMode switch for SEAICEuseDYNAMICS:
1987        SEAICEuseDYNAMICSinAdMode
1988        (extend logic in ADAUTODIFF_INADMODE_SET)
1989    o pkg/seaice
1990      - Step 1 of merging ice-thickness distribution (ITD) code from
1991        MITgcm_contrib/torge/itd/ (author: Torge Martin)
1992        The code implements concept laid out in Thorndike et al. (1975);
1993        code is enabled via CPP flag SEAICE_ITD
1994        nITD (in SEAICE_SIZE.h) defines number of ice thickness categories;
1995        code is not complete yet!!
1996      - SEAICE_SIZE.h now included in almost all seaice routines
1997    o verification (using seaice):
1998      - switch back seaice-dynamics (+ lower SOLV_MAX_ITERS) in ADM exp.
1999        global_ocean.cs32x15.seaice ; update results.
2000      - compile B-grid dynamics in FW test exp 1D_ocean_ice_column ;
2001      - compile C-grid dynamics with #define SEAICE_ALLOW_JFNK in FW test exp
2002        offline_exf_seaice (previously compiling B-grid).
2003    o pkg/exf:
2004      - fix some STOP conditions in exf_check.F (from Aug 28, modifs did not allow
2005        to specify neither just 1 comp of wind or wind-stress, nor no surface momentum
2006        forcing): just replace CPP option ALLOW_ATM_WIND with run-time param useAtmWind.
2007    o pkg/layers (adjust changes from Sept 19):
2008      - do snap-shot output and fill diagnostics from inside iLa loop (layers_calc.F)
2009        this allows to remove "layers_maxNum" dimension from all layers arrays.
2010    o pkg/layers (adjust changes from Sept 19):
2011      - remove ALLOW_LAYERS_OUTPUT ; fix snap-shot and time-ave output ;
2012      - snap-shot extended to all type of layers (not just the 1rst type);
2013      - remove layers variables when corresponding CPP option is undef.
2014    o pkg/layers:
2015      - rename pkg/layers variable and add new output (layer exist & un-weighted
2016        velocity in layer)
2017    o pkg/seaice:
2018      - simplify (?) ocean-drag coefficent computations by using
2019        the same routine in all three solvers (saves some code lines)
2020      - remove global fields DRAGA and DRAGS from C-grid code and
2021        declare them locally in lsr.F (the only place where they are
2022        still used)
2023      - update AD output of lab_sea.evp (very sensitive anyway).
2024    o pkg/seaice: add Jacobian-free Newton Krylov solver for ice dynamics
2025      (Lemieux et al. 2010, 2012). Turn on with the usual SEAICE_ALLOW_JFNK
2026      and SEAICEuseJFNK=.true. A few things to note:
2027      - involves a FGMRES, that is parallel but very inefficient,
2028        because of many scalar products (global sums) in the Gram-Schmidt
2029        orthogonalization method. Needs to be replaced. Original code
2030        from J.-F. Lemieux
2031      - preconditioner for FGMRES is a stripped down version of LSOR
2032      - SOLV_MAX_ITERS is now used for LSOR as a solver and as a
2033        preconditioner. For the preconditioner, the default is set to 10.
2034      - Jacobian times vector is computed with finite differences
2035      - marginally related to JFNK-solver: add a smooth regularization for
2036        zeta with tanh that will improve convergence (Lemieux and Tremblay,
2037        2009) for any implicit solver (not implemented for EVP because EVP
2038        does not need this regularization in the first place). Define
2039        SEAICE_ZETA_SMOOTHREG in SEAICE_OPTIONS.h to use.
2040    o eesupp/src:
2041      - check in genmake2 that intrinsic S/R flush is available.
2042      - add S/R to flush IO unit (if intrinsic S/R flush is available)
2043      - flush standard & error msg unit before MPI termination
2044      - if debugMode, flush IO unit after printing msg
2045    o pkg/ctrl:
2046      - ctrl_unpack.F, ALLOW_GENARR3D_CONTROL code: fix missing argument in call
2047        to ctrl_set_unpack_xyz.
2048    
2049    checkpoint64 (2012/10/09)
2050    o pkg/shelfice
2051      - in mom_fluxform.F, mom_vecinv.F:
2052        CALL SHELFICE_V_DRAG(bi,bj,k,vFld,KE,KappaRU,vF,myThid)
2053        Bug fix KappaRU -> KappaRV
2054        does not change verification/isomip but may change other setups
2055        (presumably constant KappaRU=KappaRV)
2056      - fix diagnostics SHIU/Vdrag (thanks to Tom Millgate)
2057    o pkg/obcs:
2058      - fixed some indexing bugs in obcs_seaice_sponge.F
2059      - added obcs relaxation subroutines for HSALT and HSNOW
2060      - changes verification/seaice_obcs/results/obcs_seaice_sponge.F
2061    o pkg/seaice:
2062      - add "multicategory" parameterization for snow in analogy to ice,
2063        default is off for now.
2064    o pkg/obcs:
2065      - added obcs_seaice_sponge.F for obcs relaxation of seaice variables;
2066        see verification/seaice_obcs/input.seaiceSponge for example application.
2067      - remove local commom bloc "OBCS_GLOBAL" in obcs_readparms.F and do all the OB
2068        index setting by master-thread. This fix multi-threads Pb in previous modifs.
2069    o pkg/layers :
2070      - add diagnostics to pkg/layers
2071      - move the meat of pkg/layers from layers_calc.F to layers_fluxcalc.F
2072        (from R.Tulloch). Layers_calc.F now calls layers_fluxcalc.F accordingly.
2073    o pkg/generic_advdiff/gad_implicit_r.F :
2074      - fix ADVr diagnostics in case of both implicit vertical advection and diffusion.
2075    o pkg/seaice/seaice_growth.F:
2076      - fix SItflux diagnostics in virtual salt flux + balanceEmpmr case.
2077    o pkg/obcs:
2078      - change default setting of OBCS_UVICE_OLD from defined to undef;
2079      - use new parameter OB_indexNone for null index value (instead of hard-coded 0)
2080        in all pkg/obcs code and in other pkgs; remove k loop in obcs_check_depths.F;
2081      - pass OB_indexNone as (new) argument to S/R CTRL_MASK_SET_[X,Y]Z;
2082      - change OB null index value (OB_indexNone) to -99 ; this fix the problem
2083        with Southern & Western OB at a tile edge (at least in a simple set-up).
2084    o pkg/obcs:
2085      - change settings of OB index in case OB coincides with tile edge (shared by
2086        2 tiles), so that common OB location is registered by both tiles (instead of
2087        only 1). However, for Southern and Western OB, index value = 0 is not
2088        recognized as valid OB index (=default null value) and needs to be fixed.
2089      - modify accordingly OBCS_BALANCE_FLOW and OBCS_MONITOR (avoid double counting)
2090      - new parameter "OB_indexNone" for null index value (for now, still zero)
2091        to replace hard-coded null index value of zero.
2092    o pkg/exch2:
2093      - improve W2_USE_E2_SAFEMODE (faster) and W2_E2_DEBUG_ON:
2094        always check buffer-size (but outside the loop); move checking for valid
2095        index from W2_USE_E2_SAFEMODE to W2_E2_DEBUG_ON; in W2_E2_DEBUG_ON,
2096        print each tile and point connection only if |W2_printMsg|>= 2 and 3.
2097    o pkg/ctrl (pack & unpack):
2098      - in ctrl_pack.F & ctrl_unpack.F, use the same local file-name variable
2099        (locally defined) for different variables (+ remove the variable-specific
2100        file name in CTRL_GENARR.h). For now, only implemented for GENARR2/3D_CONTROL
2101        (to be extended to other local file names in ctrl.h).
2102    o pkg/flt:
2103      - add a FLT_Iter0 option (similar to PTRACERS_Iter0).
2104    o pkg/mdsio:
2105      - fix missing STOP in mdsio_readvec_loc.F (case ioUnit=0) when file is missing
2106    o tools/genmake2:
2107      - add similar dependences for target EXE_AD & EXE_FTL as we have for EXECUTABLE
2108        (added by Alistair in version 1.51 for building without make depend);
2109      - remove Header files list (H_SRC_FILES) from the dependence of targets
2110         ad_input_code.f & ftl_input_code.f (not clear why it was added in the first
2111        place in version 1.23): this save going through staf when unrelated header
2112        file has been modified.
2113       Note: for an intermediate target (e.g., ad_input_code.f or adtaf) without
2114        "make depend" step, still need to do "make links" before "make adtaf".
2115    o eesupp/src (+ few pkg src files) & genmake2:
2116      - finish to remove ALWAYS_USE_MPI in source code that TAF does not see;
2117      - no longer set ALWAYS_USE_MPI in Makefile (was done by genmake2).
2118      - improve genmake2 checking for ALLOW_${PKG} in CPP_OPTIONS.h files (distinguish
2119         upper/lower case ; account for space between "#" and undef/define)
2120    o pkg/flt (with exch2):
2121      - cleaning: fix so that it compiles; move remaining MPI calls out of flt_exch2.F;
2122      - simplify threads synchronisation; fix (many issues) multi-threaded with MPI.
2123    
2124    checkpoint63s (2012/09/05)
2125    o pkg/ecco:
2126      - remove #ifdef ALLOW_SMOOTH_CORREL3D brackets.
2127      - add more relevant #ifdef ALLOW_SMOOTH ones.
2128      - sort out useAtmWind, useSMOOTH, ctrlSmoothCorrel2D.
2129    o pkg/ctrl:
2130      - CTRL_OPTIONS.h : document CPPs related to smoothing; ALLOW_SMOOTH_CORREL2D/3D,
2131        ALLOW_CTRL_SMOOTH, ALLOW_SMOOTH_CTRL2D, ALLOW_SMOOTH_CTRL3D.
2132      - ctrl.h : document run time params doInitXX, doMainPack, doMainUnpack, doPackDiag,
2133        doSinglePrecTapelev (audodiff param!), ctrlSmoothCorrel2D (new) and
2134        ctrlSmoothCorrel3D (new).
2135        The added ctrlSmoothCorrel2D/3D replace the old ALLOW_SMOOTH_CORREL2D/3D CPP.
2136      - ctrl_readparms.F : initialise ctrlSmoothCorrel2D/3D and read from namelist.
2137      - ctrl_init.F ctrl_pack.F ctrl_unpack.F : switch off ustress/vstress
2138        controls when useAtmWind, and vice versa.
2139      - ctrl_map_ini_ecco.F : UVEL0, VVEL0, edtaux, edtauy cannot be smoothed as tracers.
2140      - ctrl_get_gen.F : replace #ifdef ALLOW_SMOOTH_CORREL2D with
2141          #ifdef ALLOW_SMOOTH, IF ctrlSmoothCorrel2D, IF useSMOOTH.
2142      - ctrl_map_ini_gen.F : replace #ifdef ALLOW_SMOOTH_CORREL3D with
2143          #ifdef ALLOW_SMOOTH, IF ctrlSmoothCorrel3D, IF useSMOOTH.
2144      - ctrl_set_pack_xy[z].F, ctrl_set_unpack_xy[z].F:
2145        replace ALLOW_SMOOTH_CORREL2D/3D brackets with ctrlSmoothCorrel2D/3D.
2146    o pkg/smooth:
2147      - remove un-necessary includes.
2148      - remove ALLOW_SMOOTH*D and ALLOW_SMOOTH_CORREL*D brakets.
2149        Those CPP options were never defined, and not necessary.
2150    o model/src:
2151      - fix CPP brackets in ini_mixing.F (GM_background_K belongs to gmredi).
2152      - standard treatment of useSMOOTH.
2153    o pkg/autodiff:
2154      - add LOGICAL useGGL90inAdMode, useGGL90inFwdMode, useSALT_PLUMEinAdMode,
2155        useSALT_PLUMEInFwdMode allowing to switch off ggl90 and salt_plume adjoint.
2156    o pkg/exch2:
2157      - add "if usingMPI" where it was missing (in exch2_rx?_cube*.template)
2158        + start to remove ALWAYS_USE_MPI in source code that TAF does not see.
2159      - make new S/R W2_MAP_PROCS out of w2_eeboot.F to setup exch2 CommonFlag
2160        and tiles to process mapping.
2161      - re-arrange 3 header files (W2_EXCH2_PARAMS.h, _BUFFER.h & _TOPOLOGY.h)
2162        moving /EXCH2_FILLVAL_RX/ & /W2_EXCH2_COMMFLAG/ to W2_EXCH2_TOPOLOGY.h;
2163        rename "exch2_tProc" to "W2_tileProc" and move seting of e2FillValue_RX
2164        from w2_eeboot.F to w2_readparms.F.
2165    o eesupp/src:
2166      - set exchNeedsMemsync & exchUsesBarrier according to "usingMPI" (instead of
2167        ALWAYS_USE_MPI) + moved from ini_communication_patterns.F to eeset_parms.F;
2168        also move setting of exchCollectStatistics from exch_init.F to eeset_parms.F
2169      - in eedie.F and all_proc_die.F, always call MPI_FINALIZE when ALLOW_USE_MPI
2170        is defined (remove condition on usingMPI) to match cases where MPI_INIT
2171        has been called.
2172      - fix bug I put in previous modif of exch_sm_3d_rx.template (not much used);
2173      - change default (non-MPI) value of myPid (from 1 to 0) to match MPI settings
2174        (so that on 1 proc, get same myPid independently of usingMPI)
2175      - add a stop if multi-procs but usingMPI=F ; stop also if usingMPI=T and
2176        useCubedSphereExchange with EXCH-1 (safer).
2177      - add "if usingMPI" where it was missing (+ start to remove ALWAYS_USE_MPI).
2178    o pkg/ggl90:
2179      - fix bug in filling corner mask array "mskCor" (FILL_CS_CORNER_TR_RL call)
2180        used in ALLOW_GGL90_SMOOTH code.
2181    o pkg/flt:
2182      - fix typo in FLT_WITHOUT_Y_PERIODICITY (the effect was to ignore stopping
2183        floats at the Southern end of the domain).
2184    o eesupp/inc:
2185      - add a list of CPP-options which can be set by Makefile (DEF_IN_MAKEFILE.h);
2186        but not used (and not to be used) anywhere, just for documentation.
2187    o pkg/autodiff, exf, ptracers & seaice (AD & TL output):
2188      - comment out the very nasty "writeBinaryPrec = writeStatePrec" line, since:
2189        a) can damage previously written records in any other multi-record files.
2190        b) if needed, can easily do it cleanly, by calling S/R WRITE_REC_3D_RL/S.
2191    o tools/genmake2:
2192      - define variable MAKE within Makefile and use it in place of 'make';
2193      - update AD_CONFIG.h (if needed) before building any of the executable
2194        (forward, adjoint or tangent-lin); this involves a 2nd invocation of make;
2195        and add the usual #ifndef/#define AD_CONFIG_H in AD_CONFIG.h;
2196      - always print usual warning comment 'this file is automatically generated'
2197        from script convert_cpp_cmd2defines (+ remove this warning from genmake2).
2198    o pkg/cheapaml:
2199      - updated to correspond to the code used in accepted paper (Nico Wienders).
2200    o pkg/exf:
2201        added run time switch useAtmWind to replace ALLOW_ATM_WIND cpp switch.
2202        ALLOW_ATM_WIND now just sets the useAtmWind default (see exf_readparms.F)
2203        and force defines ALLOW_BULKFORMULAE (EXF_OPTIONS.h).
2204    o pkg/exf, autodiff, ctrl, ecco and seaice:
2205        remove ALLOW_ATM_WIND brackets, or replace them with useAtmWind ones.
2206    o pkg/ctrl, ecco:
2207        allow to compile both ALLOW_U/VSTRESS_CONTROL and ALLOW_U/VWIND_CONTROL.
2208        Depending on useAtmWind, one is inactive, and the other is active (see
2209        exf_getffields.F/exf_getsurfacefluxes.F).
2210    o tools/genmake2:
2211      - improve error msg when failing in 2nd test of check_for_broken_Ff
2212      - fix option '-makefile' short-name (-mf according to genmake2 -help)
2213      - source local config file "genmake_local" just after processing the genmake2
2214        command arguments (previously done before processing arg).
2215    o pkg/grdchk:
2216      - add a call to TURNOFF_MODEL_IO for Tangent-Linear run (in this case, call
2217        to this routine from cost_final has been dropped in g_cost_final)
2218      - improve printed information (more explicit msg, no longer using "print *,"
2219         fix fcpertminus printed value).
2220    o model/src:
2221      - move call to COST_INIT_VARIA out of packages_init_variables.F directly
2222        into initialise_varia.F (just after calling PACKAGES_INIT_VARIABLES):
2223        this prevents getting cost-funct reset in adinitialise_varia recomputations.
2224    o pkg/dic:
2225      - move initialisation of "freefe" array from from dic_biotic_forcing.F to
2226        fe_chem.F: this prevents TAF from dropping this initialisation in TLM code.
2227    o pkg/grdchk:
2228      - grdchk_main.F : added CALL GLOBAL_SUM_INT( ierr , myThid )
2229      - grdchk_getadxx.F etc. : omit I/O if ierr.EQ.0
2230    o pkg/autodiff/ctrl/grdchk :
2231      - attempt to sort out what works and what does not,
2232        with regard to I/O, and to warn/stop accordingly.
2233    o pkg/grdchk:
2234      - attempt to fix grdchk in the case of useSingleCpuIO.
2235      - "if ( myProcId .EQ. grdchkwhichproc .AND. ierr .EQ. 0 )"
2236       statements were moved from grdchk_main.F and into
2237       grdchk_getadxx.F grdchk_getxx.F grdchk_setxx.F.
2238      - a global sum is applied to record numbers icvrec/layer
2239       out of grdchk_loc so that they be passed to I/O routines.
2240    o pkg/smooth:
2241      - fix recomputation that appeared with nlfs : use smooth_recip_hFacC,
2242        smooth_hFacW, smooth_hFacS (copied at init_fixed) in 3d case.
2243    o verification/testreport:
2244      - add option '-tlm' for Tangent-Linear test (-adm,-oad,-tlm are all exclusive);
2245      - can also use compressed (gzip) reference output file;
2246      - change format (in pkg/grdchk) of TLM output (+ add forward gradient)
2247        to be easier to collect by testreport.
2248      - update existing TLM output (half out-of-date by more than 3 yrs).
2249      - report NETCDF & LAPACK settings (from genmake2) in output dir.
2250      - report run-time in each individual summary (previously only for AD test);
2251        for TLM test, add also TAF version.
2252      - add daily TLM test on (old) aces cluster + weekly test on baudelaire.
2253    
2254    checkpoint63r (2012/08/15)
2255    o tools/genmake2:
2256      - fix Makefile for target ftlall (+ update files to clean after make ftlall)
2257    o pkg/ecco/ecco_cost_final.F :
2258      - fix fc print statements (to stdout and costfunction0000) so
2259        that the printed value is always after the global sum.
2260    o pkg/seaice/seaice_dynsolver.F :
2261      - fix ice strength assymptote at SEAICE_area_max<1
2262        (no change for the standard case of SEAICE_area_max=1)
2263    o some cleaning:
2264      - pkg source files: ensure that all *.F files from each pkg included the
2265        corresponding ${PKG}_OPTIONS.h file (except stand-alone src file which
2266        only includes CPP_EEOPTIONS.h); fix S/R CTRL_SMOOTH ; update AD experiment
2267        code_ad/*.F src files; add new option-file in pkg/admtlm + corresponding
2268        includes;
2269      - model/src: add PACKAGES_CONFIG.h wherever ALLOW_AUTODIFF[_TAMC] is used.
2270      - ALLOW_DIFFKR_CONTROL: add a stop in S/R CTRL_CHECK in case ALLOW_3D_DIFFKR
2271        is undef; also define /DYNVARS_DIFFKR/ common block in DYNVARS.h when
2272        ALLOW_DIFFKR_CONTROL is defined, to allow to compile and reach this stop.
2273      - update option-file CPP_OPTIONS.h of all AD experiments:
2274        * no longer include PACKAGES_CONFIG.h ;
2275        * includes ECCO_CPPOPTIONS.h if PACKAGES_CONFIG.h has been included ;
2276        * def/undef ALLOW_3D_DIFFKR independently of ALLOW_DIFFKR_CONTROL (before
2277          including ECCO_CPPOPTIONS.h).
2278    o pkg/cost, pkg/ctrl, pkg/ecco option-file:
2279      - clean-up and split content of old pkg/ecco/ECCO_CPPOPTIONS.h file into
2280        separated pkg option-file (done according to old doc from ECCO_CPPOPTIONS.h,
2281        not necessary accurate).
2282      - add a template for option-file ECCO_CPPOPTIONS.h, mostly empty, in
2283        pkg/autodiff, i.e., the 1rst pkg to compile for adjoint built, with lines to
2284        deliberately break compilation (a remainder that it needs to be customized)
2285      - in pkg/ecco, includes ECCO_OPTIONS.h instead of COST_OPTIONS.h
2286      - rename COST_CPPOPTIONS.h to COST_OPTIONS.h
2287      - rename CTRL_CPPOPTIONS.h to CTRL_OPTIONS.h
2288    o tools/genamke2:
2289      - check for lapack.
2290    o pkg/cost and pkg/ecco : attempt to sort out some of the limiting intricacies.
2291      - pkg/cost.cost_final.F : allow for use of pkg/ecco and pkg/cost cost functions
2292        jointly. The exclusive ifdefs were removed, to add costs terms (when defined)
2293        from both packages.
2294      - the fc global sum in pkg/ecco/ecco_cost_final.F was removed accordingly.
2295      - for objf_atl we use either the pkg/ecco or the pkg/cost term depending on CPPs.
2296      - pkg/ecco and model/src : add CPP brackets around pkg/cost and pkg/ctrl includes
2297        of "CTRL_SIZE.h" "ctrl.h" "ctrl_dummy.h" "optim.h" / "cost.h" accordingly.
2298    o pkg/cost : add comments to explain special and/or untested setups.
2299  o pkg/exf:  o pkg/exf:
2300    - use EXF_OPTIONS.h to set pkg/exf options except if done in ECCO_CPPOPTIONS.h    - use EXF_OPTIONS.h to set pkg/exf options except if done in ECCO_CPPOPTIONS.h
2301      (previously, ALLOW_AUTODIFF_TAMC was controling this switch).      (previously, ALLOW_AUTODIFF_TAMC was controling this switch).

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