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revision 1.1743 by mlosch, Mon Sep 24 15:07:38 2012 UTC revision 1.2102 by jmc, Sun Dec 7 19:13:28 2014 UTC
# Line 4  $Name$ Line 4  $Name$
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    o verification/tutorial_global_oce_biogeo:
8      - AD & OAD set-up: switch off ALLOW_OLD_VIRTUALFLUX (like in fwd set-up)
9        and set PTRACERS_EvPrRn(1,2) to zero (for DIC & ALK);
10        update output_adm,_oadm,_tlm.txt
11    o pkg/dic:
12      - change default to "#undef ALLOW_OLD_VIRTUALFLUX" in DIC_OPTIONS.h
13      - add a stop when ALLOW_OLD_VIRTUALFLUX is defined and PTRACERS_EvPrRn
14        for tracer 1 & 2 is set (to avoid double counting of dilution effect).
15    o verification/tutorial_global_oce_biogeo:
16      - AD & OAD set-up: do not set PTRACERS_EvPrRn for tracer 1 & 2 since
17        dilution is already added by pkg/dic ALLOW_OLD_VIRTUALFLUX ;
18        update output_adm,_oadm,_tlm.txt
19    o eesupp/src:
20      - add fill_cs_corner_rl.F (_RL-copy of fill_cs_corner_rs.F)
21        and call it in seaice_lsr when using nonzero SEAICE_OLx/y
22    o pkg/seaice: introduce strongly implicit coupling, intended for stabilizing
23      LSR (following Hutchings et al. 2004)
24      - introduce zetaZ as a global variable (requires adjustments in
25        seaice_evp.F and seaice_jfnk.F) and compute analoguously to etaZ
26        in seaice_calc_viscosities.F
27      - new flag SEAICEuseStrImpCpl (default off)
28      - add new terms zetaZ*du/dy and zetaZ*dv/dx on both sides of the
29        momentum equations
30      - JFNK-solver (preconditioner) adjusted to allow using this method
31        (where it does not have any positive effect)
32    o pkg/seaice
33      - add overlap for restrictive additive Schwartz method also to LSR, but
34        turn it off by default (because it only seems to work for non-cubed
35        sphere/llc topologies)
36    o pkg/autodiff
37      - add extra exchanges in addummy_in_steppging also for mnc output
38    o pkg/seaice:
39      - add extra exchanges before dumping adjoint fields in seaice_ad_dump.F
40        to avoid stripes in the adjoint output (similar to addummy_in_stepping.F)
41    o pkg/obcs:
42      - add option to specify domain-connected piece Id along OB though files
43        (for now, only used to diagnose PhiVel; default =1 -> global correction)
44      - modify obcs_diag_balance.F to process each connected-part separately;
45        exclude OB where Id = 0 but keep the full divergence there (-> constant
46        Psi along this portion of OB and all inflow derived from grad(Phi))
47      - add example of OB-conect files in verification/so_box_biogeo/input.
48    o pkg/diagnostics:
49      - improve treatment of Open-Boundaries in Velocity-Potential calculation:
50      a) use non zero matrix element across OB and solve for Phi 1 grid point
51         outside OB (i.e, where tracer OBCS are applied).
52      b) global imbalance of inFlow/outFlow across OB: instead of modifying
53         velocity across OB, spread it uniformly along the OB in the RHS.
54    
55    checkpoint65g (2014/11/19)
56    o pkg/diagnostcis:
57      - add preconditioner off-diagonal factor (diagCG_pcOffDFac) as run-time param
58    o pkg/my82,pp81,kl10:
59      - fix ALLOW_3D_DIFFKR implementation (previously had no effect): use 3-D
60        field diffKr as background diffusivity to set minimum diffusivity value.
61    o pkg/seaice:
62      - add new parameter SEAICEuseEVPrev (for revisited EVP by
63        Bouillon et al 2013)
64      - add SEAICE_evpAlpha/Beta to namelist
65      - modify seaice_evp code to able to use SEAICEuseEVPrev. These changes
66        involve trivial re-ordering of divisions/multiplications that should not
67        have any effects, but ... they do change the results of lab_sea.hb87 so
68        that only 2 digits of agreement remain, in line with the general
69        instability/fragility of the evp-code. For now, I do not care and just
70        update the verification experiment
71    o pkg/ctrl : add generic pre-processing (xx_genarr2d_preproc etc)
72      - remove xx_genarr2d_numsmooth etc
73      - use xx_genarr2d_preproc etc instead
74      - carry out smooth_correl2D at initialization stage rather than during
75        time stepping.
76      - get smoothOpNb from xx_gentim2d_preproc
77    o global_oce_cs32 :
78      - add test of generic ecco capabilities.
79    o pkg/exf/exf_getsurfacefluxes.F :
80      - add to tmpUE/tmpVN rather than re-initializing them (conventional behavior).
81    o pkg/ctrl,ecco :
82      - omit un-necessary arguments to ctrl_cost_gen.F unless ECCO_CTRL_DEPRECATED
83        is defined.
84    o pkg/seaice: add diagnostics for Delta (deformation parameter)
85    o model/src:
86      - when ALLOW_3D_DIFFKR is defined, add a Warning if any of the vertical
87        diffusivity (background) is specified but ignored.
88    o verification:
89      - in testreport, convert hostname to lower case for default output dir name
90    o model, pkg : add useCTRL, useECCO parameters (on/off run time switch).
91    o pkg/dic: add modifications from Hajoon:
92      - add iron sedimentation flux function of the flux of PO4 out of bottom layer
93      - light attenuation: add self-shading effect by climatological Chlorophyll
94        (read from file).
95    o pkg/seaice/seaice_preconditioner.F : fix cpp flags, so that code also
96        compiles when SEAICE_ALLOW_DYNAMICS is undefined
97    o global_oce_llc90,cs32 : ecco_v4 verification exps now use separate
98        AUTODIFF_OPTIONS.h, CTRL_OPTIONS.h, ECCO_OPTIONS.h rather than
99        ECCO_CPPOPTIONS.h (i.e. replacing the deprecated, circumvoluted,
100        approach where CPP_OPTIONS.h includes an omnipotent
101        ECCO_CPPOPTIONS.h that superseeds pkgs '_OPTIONS.h').
102    o pkg/ctrl/ctrl_map_ini_genarr.F : include GMREDI_OPTIONS.h where
103        ALLOW_3D_KAPGM, ALLOW_3D_KAPREDI (to be added later) belong.
104    o pkg/seaice/SEAICE_SIZE.h : replace ALLOW_AUTODIFF_TAMC with ALLOW_AUTODIFF
105        to avoid needing AUTODIFF_OPTIONS.h anytime SEAICE_SIZE.h is included
106        (it seems that THSICE_SIZE.h, PTRACERS_SIZE.h have the same issue...)
107    o model/src, pkg/smooth, profiles, salt_plume, seaice, exf, ecco, ctrl :
108      add ECCO_OPTIONS.h, AUTODIFF_OPTIONS.h, CTRL_OPTIONS.h when needed
109      - ECCO_OPTIONS.h is needed when including ecco_cost.h, ecco.h
110      - AUTODIFF_OPTIONS.h is needed when including tamc.h, tamc_keys.h
111      - CTRL_OPTIONS.h is needed when including ctrl.h, optim.h, etc
112    o pkg/ctrl,ecco,exf :
113      - remove variables associated with NON-generic costs,
114        unless ECCO_CTRL_DEPRECATED is defined.
115      - remove NON-generic NON-obcs controls,
116        unless ECCO_CTRL_DEPRECATED is defined.
117    o pkg/ctrl : added ctrl_local_params.h
118    o pkg/ecco : added ecco_local_params.h
119    o verification : added ECCO_CTRL_DEPRECATED to most as and oad
120        experiments, which will progressively be removed once the
121        experiments are revised to use only generic controls/costs.
122    
123    checkpoint65f (2014/10/13)
124    o pkg/ctrl, ecco, seaice : minor changes in headers
125    o global_oce_llc90,cs32 : ecco_v4 verification exps now test generic
126        cost function and control capabilities added since checkpoint65c.
127    o pkg/ctrl: regroup all obcs ctrl variables in CTRL_OBCS.h.
128    o pkg/ecco: increase modularity and improve logic
129      - ecco_toolbox.F (new) : basic operations that are often used,
130        including ecco_zero, ecco_cp, ecco_cprsrl, ecco_diffmsk,
131        ecco_addcost, ecco_add, ecco_div, ecco_readbar.
132      - cost_gencal.F (new) : determine filnames and records.
133      - cost_genread.F, cost_generic.F : condense code using ecco_toolbox.
134      - cost_generic.F : use spzeroloc rather than hard-coded -9999,
135        and exploit the above functions leading to more compact code.
136      - cost_genread.F : rm un-necessary arguments, re-arrange args order.
137      - ecco_check.F, ecco_readparms.F : bring logic up to date (using_tpj,
138        using_ers, using_gfo, using_mdt is now only defined within gencost)
139    o pkg/ecco: extend generic cost capabilities
140      - pkg/ecco : added 3D gencost (ALLOW_GENCOST3D), added gencost
141        capabilities via gencost_preproc (+ _c,_i,_r related params),
142        gencost_posproc (+ _c,_i,_r related params), gencost_nrecperiod,
143        gencost_outputlevel arguments to cost_generic
144      - pkg/ecco/cost_genread.F (new) : interface between cost_generic
145        and active_read, making room for gencost_preproc to take effect.
146        Added preproc code ('climmon') to replace GENERIC_BAR_MONTH.
147      - pkg/ecco/cost_generic.F :
148        compute and store misfit maks*(model-data) in localdif that is
149        then used in cost and for output, output misfit if outlev.GT.0
150      - pkg/ecco/cost_averagesfields.F : depend on gencost_barskip
151        rather gencost_barfile for deciding whether to write barfile
152      - pkg/ecco/ecco_cost_driver.F : extract call to cost_profiles from cost_hyd
153      - pkg/ecco/ecco_cost_init_fixed.F : extract gencost weights from
154        ecco_cost_weights, re-activate ecco_summary, determine gencost_barskip
155      - pkg/ecco/ecco_summary.F : report gencost variables
156      - pkg/ecco/cost_gencost_customize.F : treat case of scatterometer costs
157    o pkg/sea/SEAICE_OPTIONS.h : add ALLOW_COST_ICE, ALLOW_SEAICE_COST_SMR_AREA
158    o pkg/ecco: internal re-organization
159      - resolve un-necessary dependancies within pkg/ecco and to pkg/ctrl
160        (rm includes of optim.h and ctrl.h, replace optimcycle with eccoiter,
161        mv relevant variables definition from ecco_cost.h to ecco.h,
162        make sure gencost routines only include ecco.h)
163      - throughout : add missing CCP switches, rm unused variables,
164        and rm un-necessary CPP switches
165      - throughout gencost routines : replace modelstartdate with
166        gencost_startdate when needed
167      - cost_bp_read.F : use arguments, instead of common blocs
168        so that it can be used also by (new) cost_gencost_bpv4.F
169      - ecco_init_varia.F : initialize RHOsumGlob_0, VOLsumGlob_0
170      - ecco_phys.F : compute etanFull
171      - ecco_readparms.F : rename using_topex as using_tpj, add
172        bpv4-grace to gencost list, initialize added parameters
173      - ecco_summary.F : include SIZE.h needed for augmented ecco.h
174    
175    checkpoint65e (2014/09/28)
176    o pkg/obcs:
177      - replaced the just-added CPP options with run-time variables
178        (see pkg/obcs/OBCS_PARAMS.h for details)
179    o pkg/obcs:
180      - add additional CPP options for sponge boundary layers
181        (see pkg/obcs/OBCS_OPTIONS.h for details)
182    o pkg/atm_phys:
183      - implement simple (obliquity only, assuming circular planet orbit)
184        seasonal cycle for incoming insolation ; used when run-time parameter
185        "select_incSW" is set to 1 ; by default (=0), uses old unchanged formula.
186    o pkg/exf, pkg/ecco, pkg/ctrl:
187      - add ctrlUseGen and .NOT.ctrlUseGen exclusive brackets
188      - activate gentim2d for xx_atemp,xx_aqh,xx_swdown,xx_lwdown,xx_precip
189      - implement gentim2d for xx_tauu, xx_tauv
190    o pkg/ctrl, pkg/ecco :
191      - fix and complement the generic controls implementation
192    o pkg/exf/exf_getclim.F, exf_getffields.F, exf_getsurfacefluxes.F,
193        pkg/shelfice/shelfice_thermodynamics.F,
194        verification/hs94.1x64x5/code_ad/ctrl_map_gentim2d.F,
195        verification/hs94.1x64x5/code_oad/ctrl_map_gentim2d.F :
196      - add weight in CTRL_GET_GEN calls
197    o pkg/ctrl :
198      - ctrl_get_gen.F : add weight as input parameter, and apply
199        it directly rather than using smooth_correl2Dw (to be retired).
200      - ctrl_map_gentim2d.F : add wgentim2d in CTRL_GET_GEN call
201    o pkg/ctrl :
202      - introduce run time switch ctrlUseGen (in ctrl.h, ctrl_check.F,
203        ctrl_init_variables.F, ctrl_readparms.F, ctrl_summary.F)
204      - re-activate ctrl_summary (call in ctrl_init.F)
205    o pkg/ctrl/ctrl_cost_gen.F :
206      - fix CCP brackets, remove un-necessary myiter, mytime
207    o pkg/ecco, pkg/ctrl :
208      - remove cost_genctrl.F (now pkg/ctrl/ctrl_cost_driver.F)
209      - remove cost_forcing_gen.F (now pkg/ctrl/ctrl_cost_gen2d.F)
210      - add ctrl_cost_driver.F (replaces pkg/ecco/cost_genctrl.F)
211      - add ctrl_cost_gen2d.F (replaces pkg/ecco/cost_forcing_gen.F)
212    
213    checkpoint65d (2014/09/15)
214    o pkg/ctrl/CTRL_GENARR.h, ctrl_readparms.F :
215      - add xx_genarr2d_bounds,xx_genarr3d_bounds,
216        xx_genarr2d_numsmooth, xx_genarr3d_numsmooth
217    o pkg/ctrl/ctrl_map_ini_genarr.F :
218      - remove compilation failure
219      - replace hard coded example
220      - use ctrl_map_ini_gen2D, 3D
221    o pkg/ctrl/ctrl_pack.F, ctrl_unpack.F :
222      - on/off switch based upon xx_genarr2d_weight,3d
223    o src/packages_init_variables.F :
224      - regroup pkg/estimation calls
225      - remove CTRL_MAP_INI, CTRL_MAP_INI_ECCO
226        (moved to ctrl_init_variables)
227    o cost/cost_init_varia.F :
228      - remove ecco_cost_init_varia
229        (moved to ecco_init_varia)
230    o ctrl/ctrl_init_variables.F :
231      - add CTRL_MAP_INI, CTRL_MAP_INI_ECCO
232      - add CTRL_MAP_INI_GENARR, SEAICE_CTRL_MAP_INI
233    o ctrl/ctrl_map_ini.F :
234      - remove ctrl_map_ini_genarr, seaice_ctrl_map_ini
235        (moved to ctrl_init_variables)
236    o ctrl/ctrl_map_ini_ecco.F :
237      - remove ECCO_PHYS (mv to ecco_init_varia)
238      - remove seaice_ctrl_map_ini (mv to ctrl_init_variables)
239    o ecco/ecco_ad_diff.list :
240      - add ecco_init_varia.f
241    o ecco/ecco_init_varia.F
242      - new routine
243    o pkg/streamice:
244      - move call to STREAMICE_INITIALIZE_PETSC from the_model_main.F
245        to streamice_init_fixed.F ; fix setting of STREAMICEisOn.
246      - from model/src, only call pkg/streamice routines if useStreamIce is TRUE.
247    o pkg/generic_advdiff:
248      - fix bug causing negatives in GAD_SMOLARKIEWICZ_HACK, introduced 8/8/2014.
249    o pkg/exf:
250      - exf_getffields.F : add xxg_atemp, xxg_aqh, xxg_swdown, xxg_lwdown,
251         xxg_precip capability
252      - exf_wind.F : no need for ALLOW_WSPEED_CONTROL cpp switch
253    o pkg/ctrl:
254      - ctrl_pack.F, ctrl_unpack.F : omit (un)packing of undefined xx_gentim2d
255    o model/src/load_fields_driver.F :
256      - move call to CTRL_MAP_GENTIM2D ahead of BULKF_FIELDS_LOAD, EXF_GETFORCING
257        so xx_gentim2d can be applied to e.g. exf fields in a timely manner.
258    o OpenAD verification experiments:
259      - Include explicitly AUTODIFF_OPTIONS.h, COST_OPTIONS.h, and CTRL_OPTIONS.h
260        in src files (to enable to skip the ECCO_CPPOPTIONS.h);
261        for now, only in pkgs used in OpenAD verification experiments.
262      - Change all except one (halfpipe_streamice) OpenAD experiments to use pkg
263        specific option file (AUTODIFF_OPTIONS.h, COST_OPTIONS.h & CTRL_OPTIONS.h)
264        instead of using ECCO_CPPOPTIONS.h (with all relevant options in it).
265        This applies to both TAF (*/code_ad/) and OpenAD (*/code_oad/) tests.
266    o OpenAD verification tests:
267      - finish removing ALLOW_AUTODIFF_OPENAD (replaced by ALLOW_OPENAD);
268      - finish replacing ALLOW_AUTODIFF_TAMC by ALLOW_AUTODIFF (except for
269        tape/storage which are specific to TAF/TAMC) in pkgs used in OpenAD exp.
270      - leave ALLOW_AUTODIFF_TAMC undef in OpenAD verification tests (*/code_oad/)
271        and remove local copy of "tamc.h" (needed only if ALLOW_AUTODIFF_TAMC).
272    o model/src & generic_advdiff:
273      - change hard-coded loop-range in S/R APPLY_FORCING_T/S to set T & S
274        forcing over 0:sNx+1, 0:sNy=1 (instead of just 1:sNx,1:sNy): Model
275        dynamics requires valid tracer forcing only over tile interior but, for
276        some diagnostics, may need to extend it over 1 point in tile halo region.
277      - in gad_calc_rhs.F, update calls to gmredi_x/ytransport to get valid
278        tendency over i,j_Min,Max range. This allows to simplfy i,j_Min,Max
279        setting in temp/salt/ptracer_integrate.F
280    o pkg/dic:
281      - multiply tracer tendencies by maskInC (if ussing OBCS) before updating
282        gchem tracers: this allows to skip the 2nd call to OBCS_APPLY_PTRACER
283        in gchem_forcing_sep.F
284    o pkg/autodiff & obcs:
285      - add storage of current OB values for U & V (was already done for T & S).
286    
287    checkpoint65c (2014/08/30)
288    o pkg/dic:
289      - take out of dic_atmos.F the initialisation part (corresponding to istate=0)
290        and move it to new S/R DIC_INI_ATMOS ; also simplify the dependencies for
291        AD compilers (but still a Pb with multi-threading and Ajoint dependencies).
292    o verification:
293      - new experiment testing OBCS and DIC pkgs, using params & output from
294        tutorial_global_oce_biogeo but limited to a sub-domain around Drake
295        passage: take OBCS from the last year of a 2 yrs simulation and initial
296        conditions from t=1.yr while keeping the same forcing.
297    o model/src:
298      - when allowFreezing=T, only reset below freezing initial Temp to Tfreezing
299        (at any k) if checkIniTemp is not set to FALSE (default checkIniTemp=T).
300    o pkg/diagnostics (Stats-Diags):
301      - re-write S/R DIAGSTATS_CALC (more similar to TARGET_NEC_SX part) to:
302        a) refine region where stats are computed, excluding where arrhFac=0 ;
303        b) fix missing interior mask (use with OBCS) in 3-D fields statistics;
304        c) extend regional stats over the region edges (for U or V pt location).
305    o pkg/gchem:
306      - add a (2nd) call to OBCS_APPLY_PTRACER in gchem_forcing_sep.F (needed since
307        pkg/dic is currently changing/updating ptracers values beyond the OB).
308    o verification (hs94):
309      - convert Held & Suarez external_forcing.F (from hs94.cs, with Sigma-coords
310        bits) to apply_forcing.F and undef USE_OLD_EXTERNAL_FORCING in experiments
311        hs94.cs-32x32x5 and tutorial_held_suarez_cs ; also use the same version of
312        apply_forcing.F in 2D hs94 (fwd, ad & oad) but keep LatLon hs94 unchanged.
313    o pkg/ptracers:
314      - implement Adams-Bashforth on pTracers (instead of on tracer tendency),
315        switched on by setting PTRACERS_doAB_onGpTr=F (default set to doAB_onGtGs)
316      - change exp4 secondary test (input.nlfs) to test AB on T & S & pTracer
317        with AB-2 code (so that it get tested).
318    o model/src:
319      - allow to apply Adams-Bashforth on Temp & Salt (instead of on gT,gS)
320        with AB-2 code (previously only available with AB-3 code).
321        Also move the code (call to ADAMS_BASHFORTH S/R) form thermodynamics.F
322        to temp/salt_integrate.F (since the 2nd part of gt/sNm1 update is done
323        there, by calling CYCLE_AB_TRACER).
324    o pkg/generic_advdiff:
325      - change Tracer argument (drop bi,bj indices) in S/R GAD_CALC_RHS,
326        GAD_C2_ADV_R, GAD_U3_ADV_R, GAD_C4_ADV_R, GAD_DIFF_R, GAD_BIHARM_R
327        + also in GMREDI_X/Y/RTRANSPORT ; and update corresponding calls in
328        S/R temp/salt/ptracers_integrate.F
329    o model/src & pkg/ptracers:
330      - remove common block variables gT,gS (in DYNVARS.h), except when
331         USE_OLD_EXTERNAL_FORCING is defined; update TAF storage accordingly.
332      - remove common block variable gPtr.
333    o model/src & pkgs:
334      - change gTracer (and/or tracer) argument (drop bi,bj indices) in S/R
335         ADAMS_BASHFORTH(2&3), CYCLE_(AB_)TRACER, FREESURF_RESCALE_G,
336         IMPLDIFF, SOLVE_TRIDIAGONAL & _PENTADIAGONAL, GAD_SOM_ADVECT,
337         GAD_ADVECTION, GAD_CALC_RHS, GAD_IMPLICIT_R, TIMEAVE_CUMUL_DIF_1T
338      + change accordingly all calling S/R.
339      - use local temperature/salinity/ptracer tendency array (without bi,bj)
340        in S/R temp/salt/ptracers_integrate.F
341    o pkg/seaice:
342      - move computation of stress contributions to rhsU/V in s/r seaice_lsr
343        to separate s/r seaice_lsr_rhsu/v in order to be able to re-use code
344      - make u/vIceC local variables if SEAICE_CGRID is defined only to be used
345        in seaice_lsr
346      - seaice_lsr.F: make local 4D arrays UXX, VYY, etc 2D
347        in s/r seaice_lsr_calc_coeffs
348    o pkg/mdsio:
349      - in MDS_READ/WRITE_FIELD, stop if file-name (+prefix) is too long
350        (e.g., > MAX_LEN_MBUF -90 ) or, in INI_MODEL_IO, if mdsioLocalDir is
351        too long (e.g., > MAX_LEN_FNAM/2 )
352    
353    checkpoint65b (2014/08/12)
354    o pkg/matrix:
355      - pass, as argument, updated tracer field to S/R MATRIX_STORE_TENDENCY_EXP
356    o model/src:
357      - fix initialisation of geothermalFile; compile geothermal-flux code in
358        natl_box verification experiment.
359    o model/src & pkg/down_slope:
360      - push the k loop inside S/R TIMESTEP_TRACER (now called outside the k loop).
361      - in dwnslp_apply.F, update tracer tendency instead of the future tracer
362        field and call S/R DWNSLP_APPLY before TIMESTEP_TRACER; this affects
363        results at machine truncation level: update output of experiments
364        global_ocean.90x40x15.dwnslp (FWD) and lab_sea.noseaicedyn (AD).
365    o pkg/diagnostics (Stats-Diags):
366      - do not cumulate the full volume when DIAGNOSTICS_FILL is
367        called with bibjFlg < 0 (no increment of the counter for 2D/3D diag);
368        This fix the mean statistics when DIAGNOSTICS_FILL is called multiple
369        times (but Min,Max and StD are still wrong).
370    o model/src:
371      - add geothermal flux forcing: read in ini_forcing.F as time-constant
372        field "geothermalFlux" applied in S/R APPLY_FORCING_T (apply_forcing.F)
373    o model/src:
374      - move CYCLE_TRACER calls from tracers_correction_step.F to temp/salt/ptracer
375        _integrate.F so that, when leaving S/R THERMODYANMICS, theta,salt and pTrac
376        arrays are already updated while adjustments (filters, conv.adjustment) are
377        still applied later, in S/R TRACERS_CORRECTION_STEP.
378    o model/src:
379      - store in common bloc array "rhoInSitu" the virtual potential temperature
380        anomaly that is used to compute geopotential: this make the atmos code
381        more similar to ocean code which already uses rhoInSitu in calc_phi_hyd.F
382    o pkg/seaice/seaice_lsr.F
383      - rename integer variable ilcall to ipass (that's what it is called
384        in the residual diagnostics
385      - change time stepping for NPSEUDOTIMESTEP > 2 (does not change the
386        default) for improved non-linear convergence of the first few steps
387      - adjust a few comments and add new ones to explain some of the store
388        directives
389    o pkg/generic_advdiff (& ptracers):
390      - re-work the code to check for valid advection scheme and for minimum
391        size of overlap (now stored in local common bloc in gad_advscheme.F)
392    o pkg/seaice: another attempt to make the adjoint work for sea ice dynamics
393      - re-initialize more variables in seaice_lsr: u/vIceC, u/vIceNm1
394      - add an auxilliary variable "bet" and fix store directives and keys in
395        seaice_lsr_tridiagu/v, this seems to do the trick (i.e. more or
396        less exact gradients in my tests); but there are still
397        recomputation warning (although gradients are sort of OK), when
398        SEAICE_LSR_VECTORIZE is not defined, so this flag and
399        SEAICE_LSR_VECTORIZE_ZEBRA are recommended for efficiency.
400      - update verification experiments lab_sea.
401      - change some comments in S/R seaice_calc_viscosities
402    o model/src:
403      - if staggerTimeStep=T, always apply exchange to velocity field in
404        do_stagger_fields_exchanges.F instead of in do_fields_blocking_exchanges.F
405        (independent of using multi-dim advection or not); no effect on FWD run
406        but affects AD results (at machine truncation level): update output of
407        experiment 1D_ocean_ice_column (ad: 12 digits), hs94.1x64x5 (ad,oad: 13.d)
408        and isomip (oad: 12.d).
409    o pkg/generic_advdiff:
410      - stop if doAB_onGtGs is set to FALSE but ignored
411      - refine warning related to stability of tracer time-stepping
412        regarding internal wave dynamics.
413      - setting of AdamsBashforth_T,S when doAB_onGtGs=F: remove condition
414        on staggerTimeStep & implicitIntGravWave (will now get a warning
415        if potentially unstable).
416    o pkg/kl10:
417      - add new pkg "kl10" for mixing due to internal wave breaking, from
418        http://www.sciencedirect.com/science/article/pii/S1463500310000144
419        (contribution from Jody Klymak), tested in verification experiment
420        verification/internal_wave/input.kl10/
421    o isomip experiment:
422      - test pkg/shelfice with Non-Lin Free-Surf in one of the FWD set-up
423        (input.htd) and update the output.
424    o cd_code experiments:
425      - use default cd_code options (#undef CD_CODE_NO_AB_MOMENTUM &
426        #undef CD_CODE_NO_AB_CORIOLIS) in experiments: cfc_example (fwd)
427        global_ocean.90x40x15 (ad & oad) and OpenAD (ad & oad) and
428        update the corresponding output.
429    o pkg/seaice:
430      - reduce the number of include files and store directives in
431        S/R seaice_lsr_tridiagu/v
432      - change the order of loops in one case in S/R seaice_lsr_tridiagv
433        (only for SEAICE_VECTORIZE_LSR_ZEBRA defined), which allows me to
434        get rid off one store directive (a TAF bug?)
435      - add one more instance of ifdef SEAICE_VECTORIZE_LSR_ZEBRA in
436        S/R seaice_lsr_tridiagv to change the loop range for consistency
437      - remove ilcall, m from parameter list of S/R seaice_lsr_tridiagu/v
438      - fix a bug that affects the JFNK solver: replace sNx/y by i/jMax in
439        S/R seaice_lsr_tridiagu/v (requires update of
440        offline_exf_seaice/input.dyn_jfnk)
441    
442    checkpoint65a (2014/07/27)
443    o model/src:
444      - Non-Lin Free-Surf in p/z coords: allows hFacW,S to be larger than
445        surrounding hFacC=1 @ edge of a step with different kSurfC on either side
446        (topo in p-coords, ice-shelf in z-coords); update output of experiments
447        tutorial_global_oce_in_p and isomip (both AD and OpenAD output).
448    o model/src:
449      - collect momentum forcing tendency into local 2-D array (passed as argument
450        to apply_forcing S/R); this simplifies mom. Forcing diagnostics and CD_CODE
451        parts in timestep.F (without CD_CODE_NO_AB_MOMENTUM defined = the default);
452        affects results at machine truncation level (e.g., if using OBCS_SPONGE).
453      - collect T & S forcing tendency into local 2-D array (passed as argument to
454        apply_forcing S/R); add 3-D diagnostics for temp & salt forcing tendency.
455        affects results at machine truncation level (e.g., ocean: if using
456        SHORTWAVE_HEATING ; atmos: if using FrictionHeating or (atm_Rq<>0) moist
457        correction due to vertical advection).
458      - update output of experiments: fizhi-cs-32x32x40 (13 digits),
459        global_ocean.cs32x15 (fwd: icedyn, seaice, thsice, all 3 @ 11d; adm & tml:
460        seaice_dynmix & thsice, fwd grd @ 3 & 8), hs94.1x64x5 (ad grd @ 13),
461        obcs_ctrl (ad & fwd grd @ 12 & 7).
462    o pkg/ptracers & diagnostics:
463      - use ptracers (short) name (instead of long one) to make ptracers diagnostics
464        title (to avoid some unexpected truncation); sort out ptracers diags units.
465      - collect ptracer forcing tendency into local 2-D array (passed as argument
466        to apply_forcing S/R); add 3-D diagnostics for ptracers forcing tendency.
467    
468    checkpoint65 (2014/07/18)
469    o pkg/fizhi:
470      - add parenthesis around fizhi tendencies in fizhi_tendency_apply.F: this
471        affects results at machine truncation level. Update output of experiments
472        fizhi-cs-32x32x40 (12 digits for cg2d) & fizhi-cs-aqualev20 (13 digits).
473    o pkg/seaice: more clean up
474      - rename TAF common block tapes to be more consistent and remove
475        unnecessary duplicates
476      - add store directives to remove more recomputations, but use smaller
477        tapes (and adjust keys) when SEAICE_LSR_ADJOINT_ITER is undefined.
478        The idea behind this flag is to reduce the memory footprint when the
479        adjoint of the LSR is not required. As of now, defining the flag
480        SEAICE_LSR_ADJOINT_ITER increases 4 common block tapes for 2D field by
481        a factor of SOLV_MAX_FIXED (=500 by default in SEAICE_SIZE.h).
482        For experiment offline_exf_seaice, this means on a linux box with gfortran
483        nearly a factor of 10 (but keep in mind there is mostly seaice code in
484        this experiment):
485        > size mitgcmuv_ad
486        text    data        bss     dec        hex
487        5100659 1216  220458952  225560827  d71c8fb
488        5339425 1200 1868783272 1874123897 6fb4dc79 (SEAICE_LSR_ADJOINT_ITER)
489        but only a moderate increase of 36% for global_ocean.cs32x15:
490        text    data        bss     dec        hex
491        6695027 1648 1014578664 1021275339 3cdf6ccb
492        6695203 1648 1382505320 1389202171 52cd8afb (SEAICE_LSR_ADJOINT_ITER)
493      - note: there are still recomputations in global_ocean.cs32x15 and
494        offline_exf_seaice and the gradient agreement changes (gets a
495        little worse) for global_ocean.cs32x15 (-> update output_adm.seaice.txt)
496      - in general, the AD gradients still are wrong
497    o OpenAD
498      - clean up code_oad/ directories somewhat by moving files
499        dontCompile, dontTransform, keepOriginal to OAD_support/
500    o model/src:
501      - using MOM fluxform and Non-Lin Free-Surf with momDissip_In_AB=F
502        (not currently tested): add dissipation terms before NLFS rescaling of
503        tendencies (previously done after).
504    o pkg/diagnostics:
505      - write stats-diags in ascii file with more digits (same as in monitor).
506    o pkg/down_slope:
507      - drop the bi,bj dimension of argument recip_hFac in S/R DWNSLP_APPLY; with
508        NLFS (not tested), use new recip_hFac value in order to conserve tracer.
509    o model/src:
510      - new file "apply_forcing.F" containing all the code previously in
511        external_forcing.F, but with new argument list: pass, as new argument,
512        the current level tendency array to update (instead of a direct update
513        of the common bloc array). Change the corresponding calls.
514      - add CPP option USE_OLD_EXTERNAL_FORCING (default is undef) to use
515        EXTERNAL_FORCING_U,V,T,S subroutines (for backward compatibility).
516    o pkg/seaice/seaice_lsr, a little bit of clean up
517      - rearrange some code blocks, so that now all calculations for
518        setting up the right-hand-sides done within one single block
519        (I find that easier to read and understand)
520      - rearrange freedrift-code to reduce the number of ifdefs
521      - adjust some indentations and comments
522    
523    checkpoint64z (2014/07/10)
524    o model/src and several pkgs:
525      - change argument list of all S/R called from external_forcing.F and
526        called from ptracers_forcing.F (renamed to ptracers_apply_forcing.F)
527        to pass, as argument, the current level tendency array to update
528        (instead of a direct update of the common bloc array).
529      - change also (in the same way) argument list of PTRACERS_APPLY_FORCING;
530      - rename taueddy_external_forcing.f to taueddy_tendency_apply.F
531    o pkg/seaice/seaice_lsr.F
532      - always initialize local arrays in seaice_lsr_tridiagu/v
533      - add more local tapes to seaice_lsr_tridiagu/v
534      - move storing u/vice(:,:,bi,bj) out of seaice_lsr_tridiagu/v, but
535        keep it in bi/bj loop; this seems to be essential
536      - gradients are still wrong but only by 4-7 orders of magnitude
537        instead of 15 orders of magnitude, lab_sea improves a little
538    o pkg/seaice
539      - (pkg/autodiff) remove storing/restoring of seaiceMaskU/V that
540        generates unnecessary code in seaice_lsr_ad
541      - add more store directives in seaice_lsr to avoid unnecessary code
542        in seaice_lsr_ad
543      - exclude some residual computations in seaice_lsr when
544        ALLOW_AUTODIFF_TAMC is defined in order to avoid unnecessary code
545        in seaice_lsr_ad
546      - add more storing, a new tape (model/src/the_main_loop.F) and
547        another key for SEAICE_LSR_VECTORIZE_ZEBRA (the local keys ilockey
548        and klockey should be checked by a specialist)
549      - modify ( define SEAICE_VECTORIZE_LSR and SEAICE_LSR_ADJOINT_ITER )
550        and update lab_sea after previous changes in pkg/seaice below
551    o pkg/autodiff:
552      - introduce useSmoothCorrel2DinAdMode, SEAICEapproxLevInAd, and
553        viscFacInAd : run time parameters allowing for adjoint switches
554        note : logic for useSmoothCorrel2DinAdMode is in ctrl_readparms.F
555    o pkg/ecco:
556      - introduce cost_gencost_boxmean.F that computes a box mean
557        temperature (for use in adjoint sensitivity studies).
558    o model/src/set_defaults.F : initialize viscFacAdj to 1.
559    o pkg/mom_common/mom_calc_visc.F:
560      - ifdef ALLOW_AUTODIFF then include viscFacAdj factor.
561    o pkg/seaice/seaice_summary.F:
562      - statement for SEAICEadjMODE now in autodiff_readparms.F
563    o pkg/seaice:
564      - remove some store directives and add new ones in an effort to get
565        finally rid off the recomputation warnings. This is successful
566        when SEAICE_VECTORIZE_LSR ***and*** SEAICE_LSR_ADJOINT_ITER are
567        defined (i.e. no extensive recomputation warnings left), but there
568        are still too many recomputations on the solver iteration level
569      - define SEAICE_VECTORISZE_LSR in offline_exf_seaice/code_ad/SEAICE_OPTIONS.h
570      - move definition of MPSEUDOTIMESTEPS into TAMC-block in
571        SEAICE_SIZE.h
572      - add a store directive in S/R seaice_calc_viscosities
573    o pkg/seaice (ITD code):
574      - fix definition of Hlimit for multi-threaded case
575      - use double precision arithmetic to compute Hlimit: this affects results;
576        update output of experiment seaice_itd.
577    o replace content of verification/seaice_itd
578      - instead of a 1D column use the configuration of offline_exf_seaice
579        to test the ice thickness distribution code with ridging
580      - this is a first shot at this experiment
581      - change of some defaults of ridging parameters SEAICEhStar (from
582        100 to 25) and SEAICEmuRidging (from 5 to 3) in seaice_readparms.F
583        and lot of new comments.
584    
585    checkpoint64y (2014/06/20)
586    o pkg/seaice/seaice_reg_ridge.F:
587      - modify the regularization of very small volumes of ice; only check
588        total volume HEFF, and do not apply correction to individual ice
589        classes because that leads to funny patterns in the heat and fw-fluxes
590        into the ocean. Adjust seaice_itd/results/output.txt
591      - replace nITD by SEAICE_multDim in loop-ranges
592    o pkg/exf:
593      - add code to process the case field period = -12. with UV interpolation.
594      - move debug print (formerly active when exf_verbose=T) from EXF_getFFieldRec
595        into S/R that calls it (i.e., exf_set_gen.F, exf_set_uv.F & obcs_exf_load.F)
596    o verification/global_with_exf:
597      - switch all fields period to -12. (was previously untested) in input/data.exf
598        (but keep secondary test ".yearly" unchanged); update the reference output.
599    o pkg/cal:
600      - new calendar type "noLeapYear" for 365 days calendar without any leap year.
601    o pkg/exf:
602      - new integer parameter "exf_debugLev" (default set to main model debugLevel)
603        to replace logical switch "exf_verbose"
604      - report in STDOUT when loading a new record (if exf_debugLev >= 3)
605    o pkg/sbo:
606      - update from Katherine Quinn: evaluate mass directly from density and SSH
607        (budget using Finite Volume method) instead of from bottom pressure.
608      - allow testreport to collect few selected SBO output ; tested in exp.
609        global_ocean.90x40x15 (after updating the results, to include SBO output).
610      - fix some multi-threading issues (in output part).
611    o model/src & most packages:
612      - always call {PKG}_READPARMS even if corresponding use{PKG}=F;
613      - in {PKG}_READPARMS, in case use{PKG}=F: add a call to new S/R
614        PACKAGES_UNUSED_MSG to print a weak warning when parameter file
615        "data.{pkg}" exist ; and leave the S/R (return) just after.
616      - more standard LAND pkg interface (land_init_fixed.F, land_check.F).
617        + call LAND_READPARMS from packages_readparms.F
618    o pkg/seaice:
619      - remove code that resets useThSice in S/R seaice_readparms and
620        replace it by a warning in S/R seaice_check
621      - remove parameter MULTDIM, replace with nITD and runtime
622        parameter SEAICE_multDim (still hard-wired to nITD if
623        SEAICE_ITD is defined)
624    
625    checkpoint64x (2014/05/24)
626    o verification/lab_sea:
627      - update adjoint and TLM output following changes to pkg/salt_plume
628      - un-do the update after putting back local recip_Cp in few places.
629    o pkg/salt_plume: modifications by An Nguyen:
630      - add capability to do brine rejection (salt-plume) as function of
631        volume+tracers (instead of only salinity tracer).
632      - conserve volume by exchanging volume from each kLev to above to
633        accommodate in-coming brine volume
634      - store surface and klev exchanged fraction + volume in 4 new 3-d arrays
635      - switch KPP surf buoyancy due to brine forcing to 3-d
636        (3 more 3-d arrays, 2 for SPforcing[T,S], 1 for boplume)
637      - add salt_plume_volfrac, salt_plume_apply, salt_plume_tendency_apply_t
638      - unrelatedly, also add ad-hoc capability to vary salt_plume scheme
639        in East/West Arctic.
640    o pkg/sbo:
641      - incorporate modifications from Katherine Quinn to enable the use of sbo
642        pkg in ECCO-v4 set-up ; remove SBO-TimeAve output ; add monitor-like
643        output for future testreport verification (unfinished).
644    o pkg/atm_phys:
645      - change diagnostics (AtPh_Trf & AtPh_Qrf) of DARGAN_BETTSMILLER S/R:
646        skip the reseting of t_ref & q_ref to initial t & q ; this preserve the
647        output of S/R CAPECALCNEW (Parcel temp & q) for diagnostics.
648    o pkg/seaice
649      seaice_calc_ice_strength.F: modify expression to avoid divisions
650        (affects truncation)
651      seaice_do_ridging.F: clean up the insectarium
652      - fix a bug that was compensated by areaScaling (-> remove areaScaling code)
653      - added SEAICEsnowFracRidge to redistributed snow (2nd bug)
654      - set closing/openingRate to zero where no extra iteration is need (3rd bug)
655      - add some debugging information and error messages (warnings)
656    o model/src: modifications relatd to atmosphere p*:
657      - Switch to more accurate p* coordinate slope term (calc_grad_phi_hyd.F)
658      - With p* or Sigma-P, use constant reference Pot.Temp (thetaConst) instead
659        of vertical profile tRef in geopotential background and anomaly.
660      - Acount for true p* correction in theta <-> T conversion in pkg/aim_v23
661        and pkg/atm_phys.
662      - Update FWD output of experiments: aim.5l_cs (x2), fizhi-cs-32x32x40,
663        fizhi-cs-aqualev20, fizhi-gridalt-hs, tutorial_held_suarez_cs, cpl_aim+ocn.
664    o pkg/seaice: fix a bug in seaice_prepare_ridging.F, forgot a sqrt
665    o pkg/ptracers: compute ptracer source/sink due to linear free surface.
666        not used right now, but can be used in BGC packages to fix conservation.
667    o pkg/dic, pkg/gchem: move tracer_meanarea to gchem, so it can be used by
668        other packages too.
669    o pkg/seaice/seaice_calc_ice_strength.F: replace SEAICE_rhoSnow by
670        SEAICE_rhoIce in the Rothrock (1975)-type strength calculations (bug fix)
671    o model/src:
672      - since we have several heat capacity (even in model/src), define "recip_Cp"
673        as local variable (no longer in common block) to avoid any confusion.
674      - add thetaConst in PARAMS.h (to be used with pStar or sigma-P coords).
675    o pkg/exf:
676      - from Jeff Scott: add option (#define EXF_CALC_ATMRHO) to calculate local
677        air density as function of air Temp, Humidity and atm pressure.
678    
679    checkpoint64w (2014/05/02)
680    o verification:
681      - update output_adm.txt files for experiment global_ocean.cs32x15 (seaice &
682        seaice_dynmix) and lab_sea (primary test & noseaicedyn): moving/changing
683        code from seaice_growth.F & seaice_advdiff.F to new ridging routines
684        seaice_reg_ridge.F seaice_do_ridging.F affects AD gradient
685        (down to 8-7 matching digits for global_ocean and 5-6 for lab_sea).
686    o model/src: for atmosphere in p* coords:
687      - store factor rStarFacC**atm_kappa (= pStarFacK) in common block
688      - implement more accurate p* coordinate slope term (in calc_grad_phi_hyd.F),
689        but not yet activated.
690    o pkg/seaice: fix restart problem for ITD with new ice strength parameterisation:
691      - move computation of opnWtrFrac = 1-AREA to before computing ice strength
692      - this changes the results (but not for any verification experiment, because
693        none tests this), but avoids having an extra field in the restart files
694    o pkg/seaice: remove global variable TICE (not needed)
695      - replace by TICES or local variable where necessary (cost_seaice_test,
696        seaice_diagnostics_state)
697      - move copying TICE to TICES from seaice_check_pickup to seaice_read_pickup
698      - use specific read/write routines for reading and writing individual leves
699        of a multilevel field
700    o pkg/ctrl & model/inc:
701      - move additional anomaly fields of control vars (related to options:
702         ALLOW_KAPGM_CONTROL, ALLOW_KAPREDI_CONTROL and ALLOW_BOTTOMDRAG_CONTROL)
703        from DYNVARS.h into new header file: CTRL_FIELDS.h
704    o pkg/seaice: some small modifications to the ridging code
705      - make fw2ObyRidge a global variable and add the freshwater flux to
706        seaice_growth
707      - pass actual thickness from seaice_prepare_ridging, so that it is
708        computed only in one place and compute it in the same way as in
709        seaice_growth
710      - initialise more fields in seaice_do_ridging that where cause floating
711        point exceptions over land
712    o pkg/seaice: preparations for ridging code and first real ridging code
713      - move most of "PART 1" of S/R seaice_growth into a new and separate
714        S/R seaice_reg_ridge that will both regularize the state variable after
715        advection call the actual ridging routine;
716      - requires to make 5 fields global fields: d_HEFFbyNEG,d_HSNWbyNEG,
717        d_AREAbyRLX,d_HEFFbyRLX,saltFluxAdjust;
718      - remove ridging code from seaice_advdiff
719      - clean up remaining part 1 of seaice_growth in an attempt to make it
720        more readable (this is probably subjective)
721      - call seaice_itd_redist once in the initialisation phase to have the initial
722        conditions in the correct category
723      - finally: add new ridging routine for ITD code
724    
725    checkpoint64v (2014/04/11)
726    o pkg/ecco:
727      - add runtime parameters mdt[start,end]date[1,2]
728      - rename variable "tpmean" as "mdt" and "topexmeanfile" as "mdtdatfile"
729    o pkg/seaice:
730      - make deltaC a global variable, so that it can be used in ridging code
731      - first step towards ridging: introduce new routines that compute
732        ice strength based on ridging parameters
733      - add diagnostic for HSNOWITD
734      - add opnWtrFrac as a global variable (required for ridging scheme)
735    o pkg/salt_plume + pkg/seaice/seaice_growth.F
736      - add SALT_PLUME_IN_LEADS flag to activate pkg/salt_plume only when ice
737        AREA exceeds a threshold (code contributed by I.Fenty in 2011)
738    o verification/hs94.1x64x5:
739      - leave ALLOW_AUTODIFF_TAMC undefined in code_oad/AUTODIFF_OPTIONS.h
740      - do not use ECCO_CPPOPTIONS.h anymore for TAF & OpenAD Adjoint tests.
741    o autodiff:
742      - Start to include explicitly AUTODIFF_OPTIONS.h, COST_OPTIONS.h,
743        and CTRL_OPTIONS.h in src files (to enable to skip the ECCO_CPPOPTIONS.h)
744        For now, only in pkgs used in verification/hs94.1x64x5.
745      - Replace ALLOW_AUTODIFF_TAMC by ALLOW_AUTODIFF (except for tape/storage
746        which are specific to TAF/TAMC).
747      - Replace ALLOW_AUTODIFF_OPENAD by ALLOW_OPENAD:
748        since ALLOW_OPENAD is defined in PACKAGES_CONFIG.h (any time pkg/openad
749        is compiled), this simplifies/reduces which *_OPTIONS.h file to include.
750      - OpenAD: change Makefile to generate the appropriate AD_CONFIG.h when
751        building mitgcmuv_ad (make adAll).
752    o pkg/ecco:
753      - cost_gencost_seaicev4.F:
754         reformulate proxy cost as function of sst and local param SEAICE_freeze
755         change cost names from siv4-[sst,vol] to siv4-[deconc,exconc]
756      - add stop statement if old names siv4-[sst,vol] are used
757      - add snapshots + cost reports for atmospheric longwave
758      - remove factor 0.1 in front of wtau[u,v]
759      - replace never used flag ALLOW_TMI_COST_CONTRIBUTION with
760         ALLOW_TMI_SST_COST_CONTRIBUTION
761    o pkg/atm_phys:
762      - add some diagnostics for Short-wave and for convection S/R.
763    o pkg/seaice/seaice_growth:
764      - fix a bug in the lateral melt parameterization for SEAICE_ITD
765        in seaice_growth; tempFrz needs to be computed inside the i/j-loop
766      - rearrange loop order for better vector code in the same code block
767      - rewrite the floeDiameter formula to have fewer divisions
768      -  (miraculously) none of this changes the results of seaice_itd
769    o pkg/smooth:
770      - move param smooth2Ddiffnbt to pkg/ecco
771    o pkg/salt_plume:
772      - salt_plume_frac.F:
773         clean up local param names
774         reformulate (1-frac) to frac; original 1-frac was based on swfrac code
775    o pkg/rw:
776      - add RS version of S/R READ_MFLDS_LEV.
777    o pkg/streamice:
778      - fix the restart test by writing/reading pickup_streamice files.
779    o pkg/seaice:
780      - refine checks for jfnk-related parameters
781      - comment out if statement with SEAICEuseIMEX parameter as long as there
782        is no IMEX code to avoid confusion and surprises
783    
784    checkpoint64u (2014/03/07)
785    o verification/MLAdjust:
786      - rename secondary test suffix:
787         1.leith  -> A4FlxF  + switch to flux-form & add side-drag
788         0.leithD -> AhFlxF  + switch to flux-form
789         0.smag   -> AhVrDv  (use Vorticity-Div. visc form) + add side-drag
790         0.leith  -> AhStTn  (use Strain-Tension visc form) + add side-drag
791    o pkg/mom_vecinv:
792      - remove unused arguments from S/R MOM_VI_HDISSIP & MOM_HDISSIP (as it used
793        to be before mom_calc_visc.F)
794      - skip the call to MOM_CALC_TENSION & MOM_CALC_STRAIN if not needed.
795      - add 2nd copy of vort3 & strain that knows about lateral BC (free/no slip):
796        this is simpler for the adjoint and for diagnostics.
797    o model/src + pkg/momentum:
798      - add input files for  2-D additional Western and Southern cell-edge wall
799         (e.g., to add "thin-wall" where it is =1).
800      - fix sideDrag option for thin-walls with Non-Lin Free-Surf
801        using 2nd hFacZ that is computed from initial (fix domain) hFac
802      - known limitations of thin wall implementation: not yet coded for sigma
803        coords; not working with CD-scheme neither.
804    o pkg/seaice:
805      - rename recently introduced parameters from (wrong name) AB to
806        BDF (backward difference time discretisation)
807      - retire runtime parameters SEAICEuseAB2, SEAICE_abEps
808    o tools/adjoint_options:
809      - remove setting of "OPENAD=true" (now set by command line "genmake2 -oad")
810    
811    checkpoint64t (2014/02/01)
812    o pkg/ecco
813      - add compile flag ALLOW_GENCOST_TIMEVARY_WEIGHT in ECCO_OPTIONS.h and
814        runtime logical flag gencost_timevaryweight to read daily sea-ice sigma
815      - replace hard-coded record number and period which only work for monthly
816        with read-in runtime param that works for other periods (month,day,year)
817    o pkg/thsice
818      - corrected store directive fixes thsice adjoint gradient checks
819    o genmake2 & testreport:
820      - add genmake2 option "-oad" to generate a Makefile for OpenAD built and
821        in this case, use tools/adjoint_options/adjoint_oad as default AD optfile.
822        Update testreport accordingly. No need to set "export OPENAD=true"
823        in adjoint_options/adjoint_oad anymore (will be removed later).
824    o pkg/shelfice:
825      - put T & S shelfice forcing into model surfaceForcing_T,_S (for now,
826        only if SHELFICEboundaryLayer=F); Change model/src/external_forcing.F
827        so that surface forcing applies to k=kSurf if using pkg/shelfice.
828    o pkg/ctrl, pkg/grdchk, pkg/ecco:
829      - Changes to make GENARR more modular (i.e. invisible if not used)
830    o model/src/temp_integrate.F and salt_integrate.F
831      - re-include store directives that were removed on Dec 27th.
832    o model/src/external_forcing_surf.F
833      - add storage directives for EmPmR and PmEpR to avoid recomputation of
834        seaice_model in the adjoint that is problematic when seaice_model is
835        turned off in the adjoint. The resolved issue dated back to July when
836        EXTERNAL_FORCING_SURF call was moved.
837        Update global_ocean.cs32x15/*/output_adm.seaice_dynmix.txt accordingly.
838    o pkg/exf/exf_check.F
839      - fix a small bug again (originally found by Wentao Liu, now found again)
840      - streamline error output
841    o pkg/streamice and aim_v23:
842      - replace a few "_EXCH_XY_RL (" with "_EXCH_XY_RL(", so that
843        Apple's /usr/bin/cpp knows what to do:
844        Apple LLVM version 5.0 (clang-500.2.79) (based on LLVM 3.3svn)
845        Target: x86_64-apple-darwin13.0.0
846    
847    checkpoint64s (2014/01/05)
848    o tools/adjoint_options:
849      - switch to fastopt.net TAF server (instead of default fastopt.de) for
850        AD optfiles adjoint_diva & adjoint_f95 (similar to adjoint_default).
851    o model/src:
852      - remove some unnecessary TAF storage directives in forward_step.F and
853        in dynamics.F (note: not always removed by TAF, e.g., double storage
854        of kappaRU,kappaRV in former version of dynamics.F).
855    o model/src & pkg/ptracers:
856      - call directly GAD_IMPLICIT_R & IMPLDIFF + DWNSLP_APPLY from temp_integrate.F
857        salt_integrate.F and ptracers_integrate.F (instead of from thermodynamics.F)
858        and remove ptracers_dwnslp_apply.F & ptracers_implicit.F
859      - call MATRIX_STORE_TENDENCY_EXP for each tracer (in ptracers_integrate.F)
860      - add fZon & fMer as output argument of S/R GAD_CALC_RHS.
861      - update TAF AD-output of experiments global_ocean.90x40x15 (13 for AD-grad).
862    o useSingleCpuInput separates single-CPU input from single-CPU output;
863        for now only implemented for in exf_interp_read.F
864    o verification/advect_xy:
865      - fix missing EXCH call in local version of ini_salt.F and update output.
866    o momentum diagnostics:
867      - fix which deltaT is used in Total-Tendency diagnostics.
868      - fix typo in diagnostics for momentum tendency from AB.
869    o pkg/seaice/seaice_lsr.F: fix an initialisation bug for the
870        SEAICE_VECTORIZE_LSR_ZEBRA option that lead to NaNs on a NEC-SX8
871    
872    checkpoint64r (2013/12/08)
873    o verification/*/results:
874      - Update reference output of experiments that were passing with just 13 digits
875         (make it easier to detect future changes in results)
876    o model/src & pkg/ptracers:
877      - move calls to GAD_ADVECTION (Multi-Dim advection) from thermodynamics.F to
878        inside temp_integrate.F and salt_integrate.F and from ptracers_advection.F
879        to inside ptracers_integrate.F ; remove ptracers_advection.F
880    o coupling interface pkgs:
881        [atm_compon_interf, ocn_compon_interf & atm_ocn_coupler]
882      - change the config check to test the agreement of Ocean Depth
883        with ATM land/sea mask (instead of ATM orography);
884      - send to coupler the number of coupler time-steps to do for this run:
885        this allows to check for consistency and don't need anymore to be
886        specified in parameter file "data";
887      in coupler:
888      - check consistency of RunOff map versus Ocean Depth and ATM land/sea mask.
889      - improve report to log-file of config setting (pass log-file unit to few S/R)
890    o pkg/compon_communic:
891      - add coupling send/receive for non-tiled integer vector;
892      - add S/R to check and stop if any proc has an error (similar to
893        eesupp/src/stop_if_error.F but single thread and across Comm_World).
894    o pkg/exch2:
895      - in exch2*_get_rx[1,2]: use new list "W2_tileIndex" to replace search
896        through list of all tiles my proc owns.
897    o model/src:
898      - AUTODIFF only: in calc_adv_flow.F, recompute rTransKp (instead of copying
899        from rTrans) to simplify dependencies (no need to store rTrans anymore in
900        calling S/R); this affects AD results at machine truncation level:
901        update AD-output (TAF) of experiments: 1D_ocean_ice_column,
902        bottom_ctrl_5x5 & obcs_ctrl (12 digits for AD grad, same FWD grad).
903    o tools/build_options:
904      - simplify Warnings options (-ieee & -devel cases) in linux_amd64_gfortran
905    o coupling interface pkgs:
906        [compon_communic, atm_compon_interf & ocn_compon_interf]
907      - move declaration of local array "ibuf" out of header file "CPLR_SIG.h"
908        to each S/R that needs it; remove un-used variables.
909      - change component tile registration (cpl_register.F in both compon_interf
910        and mitcomponent_tile_register.F) to pass the full list of tiles
911        information (including bi,bj) in 1 vector (instead of in a bi,bj matrix).
912      - with pkg/exch2: adopt the same convention used for I/O to define mapping
913        towards coupler global array (unless W2_useE2ioLayOut=F):
914         a) can now use different tiling between atm & ocn comp.
915         b) no needs to modify the run-Off map when changing tiling (was needed
916            even if using the same tiling between atm & ocn).
917         c) will allow to run with blank-tiles in 1 component (e.g., for ocean
918            full land tiles); not yet tested.
919      - check for valid mapping from comp. tile to coupler global array
920      - improve report of tile registration results to log file.
921    o pkg/exch2:
922      - in eesupp/src/eeboot.F: move call to W2_EEBOOT before Coupler
923        tile-registration (CPL_REGISTER);
924      - activate (un-comment) definition and setting of "W2_tileIndex" list to
925        store the local bi,bj indices of each tile;
926      - also print bi,bj in local report to log file;
927      - fix pkg/debug/debug_cs_corner_uv.F for the case nSy > 1 (left from
928        Jun 2009 modif of pkg/exch2).
929    o testing on baudelaire:
930      - run 2 tests at a time: no significant slow down (since enough cpu) and
931        get the full set of test done earlier
932      - switch the ifort test to "-devel" ; run the OpenAD test everyday.
933    o model/src/thermodynamics.F and routines called from it:
934      - pkg/gmredi: gmredi_residual_flow.F (replacing gmredi_calc_uvflow.F &
935        gmredi_calc_wflow.F) to update eulerian velocity (input) into residual
936        velocity (outp) by adding bolus velocity.
937      - model/src: calc_adv_flow.F (replacing calc_common_factors.F) to compute
938        mass transport from velocity + lateral grid cell area
939      - rename calc_gt.F to temp_integrate.F (includes call to TIMESTEP_TRACER)
940      - rename calc_gs.F to salt_integrate.F (includes call to TIMESTEP_TRACER)
941     in thermodynamics.F
942      - remove k from thermodynamics.F and move it to temp_integrate.F
943        salt_integrate.F and ptracers_integrate.F (now done inside the tracer
944        loop).
945      - compute locally (in thermodynamics.F) 3-D velocity field that is used to
946        advect tracers; pass it as argument to GAD_ADVECTION, GAD_SOM_ADVECT,
947        PTRACERS_ADVECTION, TEMP_INTEGRATE, SALT_INTEGRATE, PTRACERS_INTEGRATE,
948        GAD_IMPLICIT_R and PTRACERS_IMPLICIT
949      - update AD-output (TAF & OAD) of experiments: 1D_ocean_ice_column,
950        global_ocean.90x40x15, tutorial_global_oce_biogeo and
951        tutorial_tracer_adjsens (+ TLM output).
952    o tools/OAD_support and (verification/*/) code_oad:
953      - OAD_support/cb2mGetModules.csh: add PACKAGES_CONFIG.h in header file to
954        module conversion ; remove unneeded CPP_EEOPTIONS.h.
955      - code_oad/CPP_OPTIONS.h: remove PACKAGES_CONFIG.h and use a more standard
956        version (closer to model/inc/CPP_OPTIONS.h).
957    o model/src:
958      - remove parameter "useOldFreezing" from PARAMS.h and push it to the
959        retired list of parameters (routine FREEZE has been replace by surface
960        freezing (10.yrs ago) and by pkg/frazil (interior freezing).
961    o pkg/gmredi:
962      - add option (GM_CALC_TRANSP_FROM_VEL) to compute transport directly from
963        velocity (same scheme but affects machine truncation) for GM_AdvForm.
964      - update output of FWD experiments: front_relax.bvp,
965        global_ocean.90x40x15.dwnslp, global_ocean.cs32x15 and ideal_2D_oce.
966    
967    checkpoint64q (2013/11/17)
968    o verification:
969      - generate new output on baudelaire (gfortran, -ieee) for OpenAD experiments
970        tutorial_global_oce_biogeo and global_ocean.90x40x15.
971      - generate new output (growth & melt) for seaice_itd experiment after
972        updating the input pickup_seaice files (previously wrong).
973    o pkg/cost:
974      - define a "final cost function" for each tile, and use GLOBAL_SUM_TILE_RL
975        (instead of _GLOBAL_SUM_RL) to get the final cost from all procs & threads:
976        o this fixes global-sum value if multi-threads (since GLOBAL_SUM_RL
977          cannot be applied to var in common block).
978        o allows to get results independent of tile-per-proc setting (if using
979          slower GLOBAL_SUM_SEND_RECV option).
980      - update accordingly: seaice_cost_final.F, shelfice_cost_final.F,
981        thsice_cost_final.F and ecco_cost_final.F (this one affects lab_sea
982        forward gradients: update output).
983      - update */code_oad/externalDummies.F by adding dummy GLOBAL_SUM_TILE_RL
984        S/R and, for most exp., also comment out GLOBAL_SUM_R8.
985    o pkg/mom_common:
986      - move to pkg/mom_common and model/src (previously in tutorial_deep_convection
987        code) 2nd version of isotropic 3-D Smagorinsky code interface: strain and
988        viscosity are locally declared in dynmics.F and pass as argument to CALC_GW;
989        ensure that all field value that are used are set.
990    o tutorial_deep_convection (smag3d):
991      - add missing scaling in mom_calc_smag_3d.F;
992      - set smag3D_coeff in input.smag3d such that results do not change.
993    o pkg/dic:
994      - change dic_cost.F to compute cost on each tile first and then apply
995        GLOBAL_SUM_TILE_RL: this affects forward gradient of AD experiments
996        tutorial_dic_adjoffline & tutorial_global_oce_biogeo; update output.
997      - remove kLev argument and use GLOBAL_SUM_TILE_RL in tracer_meanarea.
998    o eesupp/src & pkg/mdsio:
999      - remove gather/scatter_vector.F (from eesupp) and mdsio_read/writevector.F
1000        (from pkg/mdsio) since they are no longer used for tape IO.
1001      - move simple C subroutine "setdir.c" from pkg/compon_communic to eesupp/src
1002        (+ keep a copy in pkg/atm_ocn_coupler).
1003    o verification/isomip:
1004      - split domain in 8 squared tiles (instead of just 2) for FWD, AD & OAD tests.
1005    o tools/build_options:
1006      - optfile linux_amd64_ifort11, fast (no ieee) case:
1007        to get a working restart for all experiments, add "-fp-model source"
1008        to FOPTIM (also remove "-opt-streaming-stores auto" <- this is the default).
1009    
1010    checkpoint64p (2013/10/20)
1011    o pkg/autodiff:
1012      - adread_adwrite.F: when type and length do not match ALLOW_AUTODIFF_WHTAPEIO
1013        criteria, return to simple (default) tape IO format.
1014    o pkg/mdsio (+ eesupp/src):
1015      - rewrite/simplify tape-IO S/R (new S/R MDS_READ/WRITE_TAPE replace
1016        previous MDSREAD/WRITEVECTOR) with 2 array argument from each type (R4/R8);
1017      - fix globalFile and singleCpuIO options using simpler global mapping.
1018      - new pairs of scatter/gather vector S/R (one for each type, generated from
1019        template) corresponding to simpler global mapping.
1020      - adread_write.F: switch to new S/R (but leave old calls commented) and write
1021        to globalFile when parameter globalFiles is set to True.
1022      - switch on useSingleCpuIO in AD experiments: global_ocean.90x40x15 & isomip.
1023    o pkg/autodiff:
1024      - adread_adwrite.F: add a hack for RS arrays (when RS=real*4);
1025        with ALLOW_AUTODIFF_WHTAPEIO defined, since corresponding (real*4) is
1026        missing, just add a STOP if array type do not match.
1027    o pkg/exf:
1028      - to allow to use seaice-fraction from pkg/exf in other pkgs than pkg/seaice:
1029         rename CPP option EXF_ALLOW_SEAICE_RELAX to EXF_SEAICE_FRACTION
1030         and rename array obsSIce to exf_iceFraction.
1031    o tutorial_deep_convection:
1032      - add 1rst version of isotropic 3-D Smagorinsky code (from Louis-Philippe),
1033        for now all in this exp. code dir.
1034      - add secondary test using Smag-3D viscosity (keep very low backgroud visc for
1035        testing) and flux-limter advection scheme for Temp. (no explicit diffusion).
1036    o eesupp/src:
1037      - added SINGLE_DISK_IO option because reading of parameter files on
1038        very large number of processors did not work with existing set-up
1039    
1040    checkpoint64o (2013/09/25)
1041    o pkg/atm_phys & atm_compon_interf:
1042      - allows for coupling of gray-atmosphere (atm_phys) with ocean.
1043    o tools/build_options:
1044      - switch from "-fPIC" to "-mcmodel=medium" in optfiles: linux_amd64_gfortran
1045        & linux_amd64_ifort11 and in linux_amd64_g77 & linux_amd64_open64 also
1046        remove CPP setting (was identical to genmake2 default).
1047    o pkg/gmredi & model/src: Some updating and work done on the residual model.
1048      - created new file model/src/calc_eddy_stress.F to calculate the eddy stress.
1049      - fixed up the calculation of the eddy stress and how it is added to the
1050        external forcing via taueddy_external_forcing.F
1051      - at the moment, it is very experimental and only works with the variable eddy
1052        diffusivity calculated in gmredi_k3d.F
1053    o pkg/seaice/seaice_check.F: add a check to catch the case of specifying
1054        lw/swfluxfile instead of lw/swdownfile in data.exf together with pkg/seaice
1055    o testreport (& tools/do_tst_2+2):
1056      - for MPI test, set default COMMAND to 'mpirun -v -np TR_NPROC ./{executable}'
1057    o tools/build_options: linux_amd64_gfortran & linux_amd64_ifort11:
1058      - remove CPP='cpp -traditional -P' (this is genmake2 default)
1059      - add switch (for big setups) to use 'medium' memory-model (but leave it
1060        commented out for now). Note: needed with FC 19 to compile big setups.
1061    o pkg/atm_compon_interf:
1062      - regroup per field origin (model & pkgs) the coupling storage routines
1063         (which accumalate in time each coupling field)
1064      - move bi,bj loops inside atm_store_my_data.F and store also wind-stress;
1065        update accordingly + simplify aim_do_physics.F
1066    
1067    checkpoint64n (2013/08/26)
1068    o pkg/bbl:
1069      - update formulation to reduce dispersion of tracer properties in bbl
1070      - replaced horizontal and vertical transport parameters with velocities
1071      - changes results for verification/global_with_exf.yearly
1072    o verification/halfpipe_streamice:
1073      - change to matrix construction; update both Fwd & AD output.
1074    o verification/tutorial_tracer_adjsens:
1075      - OpenAD test: switch to vector-invariant momentum since fluxform with
1076        rStar causes problems with OpenAD; update output.
1077    o tools:
1078      - genmake2: define a common prefix for all temp-file names ; move them
1079        to local /tmp disk (but would be easy to move them back);
1080      - xmakedepend: apply the same switch for temp-files.
1081    o pkg/offline:
1082      - changes for use with rStar (NLFS): assume that we continue to provide
1083        UVELMASS/hFacW_ini & VVELMASS/hFacS_ini (hFacWi,S_ini as written in grid
1084        output files) and apply r* scaling at each time-step (function of the time
1085        varying Eta field); use normal pickup files (needed for restart with NLFS).
1086    o adjoint with OpenAD:
1087      - move OpenAD-specific files from verification/OpenAD/code_oad_all to a new
1088        package openad.  This package has to be compiled for all runs with OpenAD
1089        instead of specifying code_oad_all as a modification directory.
1090      - link the fortran templates from tools/OAD_support to the build directory
1091        for preprocessing to avoid conflicts between different setups compiled
1092        simultaneously and simplify cleanup.
1093    o pkg/exf:
1094      - in exf_getforcing.F: comment out most of the EXCH calls (fields used by
1095        main model or other pkgs are exchanged in EXF_MAPFIELDS).
1096    o model/src:
1097      - do_stagger_fields_exchanges.F: skip EXCH calls when using pkg/offline
1098        (similar to do_fields_blocking_exchanges.F).
1099    o tools/genmake2:
1100      - remove TAF output src code just before calling staf (when not doing a fresh
1101        built, will stop if things go wrong with staf).
1102      - fix target "adobj" (left from TAF version-2 transition)
1103    o pkg/diagnostics:
1104      - add a parameter to track the status of pkg/diagnostics activation;
1105        this replace/extend the use of logical param "settingDiags" (to check
1106        when adding diag to the list) to also check any DIAGNOSTICS_[]FILL* call.
1107        New S/R to print error message and stop when pkgStatus is not right.
1108      - to try: add a warning when "data.diagnostics" exist but useDiagnostics=F.
1109    
1110    checkpoint64m (2013/08/13)
1111    o model/inc:
1112      - move FCORI_MACROS.h from PARAMS(_MACROS).h to GRID_MACROS.h (left from
1113        8 yrs ago modif when Coriolis arrays were moved from PARAMS.h to GRID.h)
1114    o pkg/kpp & aim_v23:
1115      - only call DIAGNOSTICS_FILL when useDiagnostics=TRUE.
1116    o pkg/seaice:
1117      - restore (last time on 2011/12/24) ability to compile pkg/seaice with
1118        undefined pkg/exf ALLOW_ATM_TEMP or ALLOW_RUNOFF CPP-options.
1119      - only call DIAGNOSTICS_FILL when useDiagnostics=TRUE.
1120    o eesupp/src:
1121      - fix check for overlap-size argument (myOLn.GT.MAX_OLY_EXCH)
1122        in exch1_rx[_ad].template (thanks to Francois Lefeuvre report).
1123    o switch to TAF version-2:
1124      - add flow directives to "freeze" naming convention for ad-routines that
1125        are used in I/O routines of adjoint state and associated common blocks
1126        that are used in adcommon.h (backward compatible with version-1)
1127      - update all ad-optfiles (in tools/adjoint_options + few local to some
1128        verification exp) to switch to latest TAF version (currently 2.5.5);
1129        merge "*_mpi" adoptfiles into the corresponding non-mpi (but commented
1130        out except for diva).
1131      - the major change with TAF version-2 is that both the differentiated
1132        routines and the forward routines (new) are returned as part of the TAF
1133        output source code. Update genmake2 accordingly.
1134      - new output for AD experiment tutorial_global_oce_biogeo (better AD gradient
1135        with version-2 when compared to TLM or FWD gradient); other experiments
1136        output show minor changes (machine truncation level); update the few AD &
1137        TLM output with 12 matching digits only (some prior to version-2 switch).
1138    
1139    checkpoint64l (2013/08/05)
1140    o model/src:
1141      - in dynamics.F, skip the call to CALC_VISCOSITY if momViscosity=F
1142      - main_do_loop.F: no longer includes additional (AUTODIFF) header files
1143        when using TAF but only if using OpenAD.
1144    o pkg/mom_common+fluxform+vecinv:
1145      - always set horiz. viscosity arrays to background value before calling
1146        MOM_CALC_VISC (in MOM_FLUXFORM & MOM_VECINV) and call S/R MOM_CALC_VISC
1147        only when using variable horiz. viscosity (useVariableVisc=T);
1148      - simplify mom_vecinv.F (only 1 block for momViscosity).
1149    o pkg/mom_common: variable horiz. viscosity in NH code
1150      - move horiz-viscosity 3-D arrays viscAh_W & viscA4_W (used in calc_gw.F)
1151        from model/inc/NH_VARS.h to pkg/mom_common/MOM_VISC.h
1152      - store in common block (in MOM_VISC.h) logical parameters: useHarmonicVisc,
1153        useBiharmonicVisc & useVariableVisc.
1154      - fix old bug (already in 1rst implementation of variable horizontal viscosity
1155        in calc_gw.F, version 1.27, 2006/06/20):
1156        horizontal bi-harmonic viscosity in gW was missing when wiscA4W=0
1157        even if variable bi-harmonic viscosity (e.g., viscA4Grid) was non-zero.
1158      - change background horiz viscosity in vertical momentum (gW) to always be
1159        viscAhW,viscA4W (instead of switching to viscAhD, viscA4D when using
1160        any type of variable viscosity, e.g., viscAh/4Grid)
1161      - change default value of viscAhW,viscA4W to viscAhD,viscA4D (instead of
1162        viscAh,viscA4) which default to viscAh,viscA4 :  this avoid missing
1163        horiz. viscosity in W eq when just setting viscAhD/Z,viscA4D/Z (since
1164        default viscAh,viscA4 is zero).
1165    o model/src:
1166      - extend length of drC & recip_drC from Nr to Nr+1.
1167    o Divided Adjoint (DIVA) with MPI:
1168      - genmake2: do not create local ./mpi_headers dir when no file to copy into.
1169      - remove option ALLOW_DIVIDED_ADJOINT_MPI (replaced by ALLOW_DIVIDED_ADJOINT
1170        and ALLOW_USE_MPI) from model/src code and from ECCO_CPPOPTIONS.h.
1171    
1172    checkpoint64k (2013/07/23)
1173    o tools/OAD_support:
1174      - avoid the need for file "oadtempflile" in insertTemplateDir.bash
1175        and remove it from genmake2.
1176    o tools/build_options:
1177      - remove MPI_HEADER_FILES_INC setting (no longer used) and comment out
1178        MPI_HEADER_FILES list (let genmake2 find the missing headers)
1179    o verification/halfpipe_streamice:
1180      - change to driving stress formulation; update both Fwd & AD output.
1181    o tools/genmake2 and Divided Adjoint with MPI:
1182      - remove default setting of MPIINCLUDEDIR from $MPIHOME (always been broken);
1183      - only create local ./mpi_headers dir if using MPI and MPIINCLUDEDIR is set;
1184      - add new variable (LOCAL_MPI_HEADERS, replace MPI_HEADER_FILES_INC) in
1185        Makefile, which is set by genmake2, and check which mpi-headers are needed.
1186        Note: need to update adjoint_options/adjoint_diva_mpi accordingly.
1187      - update target "CLEAN" (to also remove ./mpi_headers/ dir).
1188    o testreport:
1189      - changes for Divided Adjoint Run: when file "run_ADM_DIVA" is present,
1190        perform additional runs (number of additional runs is "add_DIVA_runs" taken
1191        from file run_ADM_DIVA ; should match "nchklev_3" in file "code_ad/tamc.h").
1192    o verification/lab_sea (AD test):
1193      - change to test Divided Adjoint Run in this set-up (both standard AD test
1194        and 2 secondary AD test: noseaice + noseaicedyn); drop the evp AD test.
1195    o pkg atm_ & ocn_compon_interf:
1196      - remove cpl_earlyExpImpCall=F option (was mainly a hack added for the old
1197        staggerTimeStep implementation) and disable (retired) corresponding
1198        parameter.
1199    o pkg/offline:
1200      - comment out unused field-array: ICEM, ConvectCount, hflx[01], icem[01];
1201      - add S/R OFFLINE_CHECK to print offline parameter summary
1202        and stop if loading a file that is not used;
1203      - enable to calculate GMRedi tensor, KPP mixing and convective index
1204        when the corresponding file(s) is/are not specified (but pkg is used).
1205      - comment out resetting of monitorFreq (to endTime) since it still useful
1206        for monitoring CFL numbers and checking offline fields.
1207    o OpenAD:
1208      - do not define OAD_DEBUG (in tools/adjoint_options/adjoint_oad) to get
1209        smaller standard output) and generate new (smaller) output (on baudelaire
1210        using gfortran with -ieee) for exp. tutorial_tracer_adjsens
1211    o model/src:
1212      - call EXTERNAL_FORCING_SURF outside bi,bj loops (in do_oceanic_phys.F),
1213        (where external_forcing_adjust was called) and change list of arguments;
1214      - merge external_forcing_adjust.F into external_forcing_surf.F
1215      - put surface relaxation of SST & SSS in new S/R (forcing_surf_relax.F)
1216        which also contains balancing surface relaxation (ALLOW_BALANCE_RELAX,
1217        previously in file "balance_relax.F", now removed); remove corresponding
1218        arrays in FFIELDS.h.
1219      - EXTERNAL_FORCING_SURF is now called when using pkg/offline; implement
1220        a hack for getting back surfaceForcingS (loaded from file) when using
1221        ALLOW_OLD_VIRTUALFLUX (pkg/dic, in DIC_OPTIONS.h) in offline set-up.
1222      - update output of AD test experiment global_ocean.cs32x15.seaice_dynmix
1223        (was getting only 11 digits for AD-grad, due to different truncation
1224         error in AD code).
1225    
1226    checkpoint64j (2013/07/04)
1227    o pkg/offline:
1228      - to enable the use of other features with pkg offline (e.g., obcs),
1229        also call S/R DO_OCEANIC_PHYS in offline run - more modifs to come.
1230      - comment out "allowFreezing" (now active) in 2 offline testing exp.
1231    o pkg/exf ALLOW_RUNOFTEMP
1232      - fix sign and make compatible with temp_EvPrRn .NE. UNSET_RL
1233      - ahdded RUNOFTEMP test to verification/global_ocean.cs32x15/input.seaice
1234      - changes verification/global_ocean.cs32x15/results/output.seaice.txt
1235    o pkg/atm_phys:
1236      - allows to add some damping on uVel,vVel (strength only function of k).
1237    o verification, ad-tests:
1238      - reduce length of the simulation for AD test: global_ocean.cs32x15.seaice,
1239        global_ocean_ebm and offline_exf_seaice.thsice.
1240    o verification/halfpipe_streamice:
1241      - found a bug in s/r pkg/streamice/streamice_advect_thickness which caused
1242        flux input boundary conditions to be ignored; a fix for this bug changed
1243        verification results for forward test.
1244      - add adjoint test.
1245    o pkg/ptracers:
1246      - allow to restart without SOM pickup (resetting SOM to zero).
1247    o pkg/gmredi:
1248      - New parameterisation for the calculation of K and (GM_PsiX,GM_PsiY) added.
1249      - It uses mixing length theory and suppression by steering level effects to
1250        calculate a diffusivity used in the Redi tensor (see Bates et al., submitted
1251        to JPO, for more details).
1252      - It also uses the diffusivity to calculate an eddy induced streamfunction
1253        based on a PV closure (rather than a buoyancy closure as in GM).
1254      - New files added to pkg/gmredi:
1255        gmredi_k3d.F calculates the diffusivity for the Redi tensor and the eddy
1256          induced overturning streamfunction (called from gmredi_calc_tensor)
1257        gmredi_calc_eigs.F calculates the eigenvalues and eigenvectors required
1258          for use in gmredi_k3d
1259        gmredi_calc_urms.F calculates the the rms eddy velocity used to calculate
1260          the eddy diffusivity
1261    
1262    checkpoint64i (2013/06/18)
1263    o pkg/cheapaml:
1264      - take src files from MITgcm_contrib/verification_other/offline_cheapaml/code
1265        that enable the use of seaice (pkg/thsice thermo & pkg/seaice dynamics)
1266        with pkg/cheapaml.
1267    o utils/python: add subpackage for cubed sphere function, first example is
1268        simple cs.pcol to plot 2D fields on a map
1269    o pkg/streamice:
1270      - This is a new package in MITgcm, which solves dynamic equations for ice
1271         sheets and ice streams
1272      - At the moment it is independent of atmosphere/ocean dynamics, or any
1273        other physical packages in MITgcm, even ShelfIce (although it is anticipat-
1274        ed that this will change)
1275      - There is a new verification exercise that tests it, halfpipe_streamice,
1276        evolves a 40x80 km ice stream/ice shelf (at coarse resolution) in a
1277        rectangular embayment
1278      - halfpipe_streamice is forward-only for now, will have TAF test soon
1279      - for questions, email dgoldber@mit.edu
1280    o pkg/thsice:
1281      - fix filling of snow-precip diagnostic (SIsnwPrc) (left from the removing
1282        of snowPrc from common bloc, on May 2nd, thsice_step_fwd.F revision 1.40);
1283      - remove diagnostics 'SI_FrcFx' ( now identical to 'SI_Fract' with new
1284         call sequence: ice-Thermo(thsice),ice-Dyn,ice-Advect );
1285      - allow precip from pkg/cheapaml to make snow over seaice.
1286    o pkg/cfc:
1287      - move in separated header file (CFC_ATMOS.h) time-serie arrays of Atmos CFC
1288      - remove atmos CFC 2-D arrays from common bloc (now local variables)
1289      - change some hard-coded constant to run time parameter for reading and
1290        and interpolating atmospheric CFC ; keep same default as previously.
1291      - more flexible reading of Atmos CFC (number of records no longer hard-coded)
1292      - put arguments in standard order: myTime, myIter, myThid
1293      - use standard S/R GET_PERIODIC_INTERVAL for time interpolation of
1294        atmospheric CFC ; fix for the case myIter < PTRACERS_iter0.
1295      - fix calculation of surf tendencys for partial-cell and/or Non-Lin Free-Surf
1296      - new routine to print summary of CFC params and check for consistency.
1297    o pkg/seaice: add uice/vice to the parameter list of s/r seaice_advdiff,
1298      similar to thsice_advdiff.
1299      Note that for the B-grid case the routine parameters uc/vc are overwritten.
1300    o pkg/cfc:
1301      - change time interpolation for atmospheric CFC-11 (now same as for CFC-12);
1302        update output (CFC-11) of experiment cfc_example and tutorial_cfc_offline.
1303      - fix interpolation of atmphspheric CFC between Sorthern and Northern
1304        hemisphere value.
1305    o pkg/seaice:
1306      - allow to use seaice dynamics without pkg/exf (e.g., using pkg/cheapaml)
1307    o pkg/seaice: add Adams-Bashforth2 time discretization for ice dynamics;
1308                  so far only for JFNK-solver, turn on with SEAICEuseAB2 = .TRUE.
1309      - requires an additional time level that is stored in the pickup
1310      - you can start with AB2 from a pickup without this time level with
1311        pickupStrictlyMatch = .false.
1312    
1313    checkpoint64h (2013/05/26)
1314    o pkg/cheapaml:
1315      - replace one ()**.5 with SQRT + use temp var "cdu = tau/Du" (coare3_flux);
1316        affect machine truncation (but exp cheapAML_box still pass with 13 digits).
1317      - consistent treatment of uWind,vWind location: assume everywhere in
1318        pkg/cheapaml that they are on C-grid (@ uVel,vVel location)
1319        (Note: was already the case for Tair,Qair advection);
1320        add option (INCONSISTENT_WIND_LOCATION) to recover old results.
1321      - compute diabatic forcing only in the interior (excluding overlap regions)
1322      - fill in array "Qsw" (for short-wave heating);
1323      - add diagnostic for precip ; fill-in diagnostics for cheapAML state vars
1324        before any update (consistent with MITgcm state var diagnostics);
1325      - cheapaml_fields_load.F & cheapaml_init_varia.F : only fill outer edges if
1326        non periodic ; + adjusted for uWind,vWind (C-grid).
1327    o pkg/seaice:
1328      - remove dependence of pkg/seaice versus pkg/exf (file: pkg/pkg_depend) and
1329        add explicitly pkg/exf in experiments that currently use pkg/seaice.
1330      - allows to compile pkg/seaice without pkg/exf.
1331    o tools/OAD_support:
1332      - use a local copy (ourRWCPinBd) to ensure index ourRWCP stays within bounds
1333        of array "ourStepOf" in function rvNextAction (revolve.F90).
1334    o pkg/aim_compon_interf renamed to pkg/atm_compon_interf
1335      - change pkg name (to be used with other atmospheric physics pkg)
1336        but by-pass CVS when making the new pkg so that we keep the CVS history.
1337    o pkg/offline:
1338      - call OFFLINE_FIELDS_LOAD from pkg/offline/offline_init_varia.F
1339        (previously called from pkg/dic_surfforcing_init.F)
1340    o model/src:
1341      - re-order sequence of calls within packages_init_variables.F, using
1342        standard order, except for:
1343         DIAGNOSTICS_INIT_VARIA and OFFLINE_INIT_VARIA (called @ the top),
1344         CTRL_MAP_INI and OBCS_INIT_VARIABLES (called @ the bottom)
1345    o new pkg: atm_phys
1346      - add entry point and source code (previously in contrib
1347          verification_other/atm_gray/code_gray/) for new pkg "atm_phys"
1348        (atmospheric physics pkg from P. O'Gorman and T. Schneider, JCl, 2008).
1349      - re-order sequence of calls within packages_readparms.F,
1350         packages_init_fixed.F and packages_write_pickup.F
1351        (but skip packages_init_variables.F because of TAF issues).
1352      - update contrib/*/atm_gray/ experiment.
1353    o pkg/seaice (ITD code):
1354      - simplify and fix the writing of pickup-files for ITD case
1355    o pkg/seaice (ITD code):
1356      - introduce floe size dependent lateral melt for ITD case;
1357      - cleaning (avoid division by zero, change to f77 syntax, remove tabs)
1358      - update seaice_itd experiment main output.
1359    o pkg/thsice:
1360      - remove snowPrc from common block THSICE_FLUX, in THSICE_VARS.h and
1361        declared it locally (without bi,bj) in thsice_main.F & aim_do_physics.F;
1362        changed accordingly pkg/atm2d.
1363    
1364    checkpoint64g (2013/05/01)
1365    o pkg/exf ALLOW_RUNOFTEMP
1366      - if defined,  river and glacier runoff temperature can be read-in from
1367        runoftempfile; runoftempfile needs to have same format as runofffile
1368    o pkg/thsice (& pkg/bulk_force):
1369      - In case Energy-Reference-Level (ERL) is used (temp_EvPrRn=0), account
1370        for energy content of Precip + RunOff & Evap (like with pkg/exf).
1371      - change computation domain to always be the interior (without overlap).
1372      - fix bug (wrong overlap) when using EXF and stressReduction > 0.
1373    o verification/tutorial_global_oce_biogeo:
1374      - add preliminary OpenAD setup (still has problems)
1375    o pkg/seaice:
1376      - turn some parameters for choosing the convergence criterion of
1377        the inexact Newton method (JFNK) into runtime parameters for convenience
1378      - clean up seaice_calc_viscosities.F: remove/retire two options for
1379        SEAICetaZmethod (1,2), introduce area weighting for method 3; this changes
1380        the results of lab_sea/input because a division has been replaced by
1381        a multiplication with the reciprocal (sumNorm)
1382      - modify offline_exf_seaice/input.dyn_jfnk/data.seaice to improve
1383        convergence of solver (changes results, of course), and to test some
1384        new features
1385    o model/src:
1386      - remove unused (since Aug 2006) S/R SET_WRITE_GLOBAL_PICKUP and its call.
1387      - remove unused forcing field "dQdT" and associated parameter "dQdTFile".
1388      - move forcing adjustment (balancing surface forcing) in specific S/R
1389        where might also be applied exchanges (if needed) to forcing arrays.
1390    o pkg/shelfice:
1391      - allow to specify the Ice-Shelf mass per unit area (instead of
1392        shelficeLoadAnomaly) and do the conversion from one to the other
1393      - move loading from file of shelficeLoadAnomaly from SHELFICE_INIT_VARIA
1394        to SHELFICE_INIT_FIXED: (a) avoid some TAF recompution issues and
1395        (b) will be loaded in time (before calling INI_PRESSURE) in case it is
1396        needed in phi0surf for initial pressure calculation when useDynP_inEos_Zc
1397      - update isomip experiment forward output (get machine truncation error
1398        from conversion shelficeLoadAnomaly -> shelficeMass -> shelficeLoadAnomaly)
1399    o verification/offline_exf_seaice:
1400      revise data.seaice in input.thermo and input_ad and update results accordingly
1401        HO = 0.2, SEAICE_areaLossFormula = 2,
1402        SEAICE_growMeltByConv = .TRUE.,
1403        SEAICE_doOpenWaterMelt = .TRUE.,
1404      Improve consistency with input.thsice and fix the spurious 500m ice corners
1405    o verification/global_ocean.cs32x15:
1406      - set Energy Reference Level to liq. water @ 0 degC: temp_EvPrRn=0.,
1407        in icedyn (thsice+seaice-dyn) test and update output.
1408    o verification/offline_exf_seaice:
1409      - adjust list of tested variables (with testreport) and update
1410        standard test output with better slection of monitored fields.
1411    o pkg/cd_code:
1412      - swtich off Adams-Bashforth on the 1rst iteration. Update output of
1413        experiment lab_sea.hb87
1414    o tools/genmake2:
1415      - change default makedepend from the system default to tools/xmakedepend:
1416        When no makedepend is specified, select tools/xmakedepend it the test pass,
1417        otherwise select the system default (if exist and pass the test) or
1418        try to build cyrus-makedepend ; stop if none of the 3 works.
1419    o pkg/exf & pkg/thsice:
1420      - In case Energy-Reference-Level (ERL) is used (temp_EvPrRn=0), account
1421        for energy content of Precip + RunOff & Evap. Assumes:
1422       1) Rain has same temp as Air.
1423       2) Snow has no heat capacity (consistent with seaice & thsice pkgs)
1424       3) Run-Off comes at the temp of surface water (with same Cp)
1425       4) Evap over ocean is released to the Atmos @ surf-temp (=SST); should be
1426        put directly into Latent Heat flux & should use water-vapor heat capacity.
1427       5) Evap over snow/seaice (pkg/thsice) assumes constant Lf+Lv (consistent
1428        with snow having no Cp) => water vapor is released to Atmos @ 0^oC (=ERL).
1429    o pkg/seaice: simplify the use of CPP flags in JFNK-related files
1430        (compile when SEAICE_ALLOW_JFNK is defined)
1431    o pkg/thsice:
1432      - fix oceanic flux diagnostics & timeave (left from new sequence of calls
1433        implementation): move THSICE_AVE call after the advection (called directly
1434        from thsice_do_advect.F).
1435    o verification/global_ocean.90x40x15 and OpenAD:
1436      New experiment for OpenAD is identical to the one in input_ad except that
1437        multiDimAdvection=.FALSE.,
1438      There is still an issue with this.
1439    o pkg/thsice:
1440      - account for ice velocity (ocean relative velocity) in turbulent heat flux
1441        at the base of the ice; update output of global_ocean.cs32x15 (icedyn)
1442        and offline_exf_seaice (main test).
1443    
1444    checkpoint64f (2013/03/31)
1445    o verification/OpenAD:
1446      - new (smaller, without OAD_DEBUG) output_oadm.txt generated using gfortran.
1447    o verification/isomip, pkg/shelfice and OpenAD:
1448      - add OpenAD setup to this exp and make shelfice package work with OpenAD
1449    o verification/tutorial_global_oce_biogeo:
1450      - update AD and TLM output after turning off ALLOW_FE (in DIC_OPTIONS.h)
1451    o verification/offline_exf_seaice:
1452      - replace adjoint experiment (now similar to fwd input.thermo/ setup).
1453    o verification/tutorial_tracer_adjsens, pkg/ptracers and OpenAD:
1454      - add OpenAD setup to this exp and make ptracers package work with OpenAD
1455    o pkg/seaice/seaice_evp.F:
1456       mask the asymmetric contribution of the ice-ocean stress (when
1457       the turningAngle is non-zero) over open water to avoid stripes
1458       in the EVP-solutions after many EVP-substeps. This does not change
1459       the verification experiment (because turningAngle=0 in that experiment),
1460       but will affect other EVP solutions with turningAngle.ne.0
1461    o verification, AD & TLM output:
1462      - new TAF version 2.3.10 (previously 2.3.8) add more parenthesis in multiple
1463        additions and multiplications which affect results at machine truncation
1464        level. Update few AD output (1D_ocean_ice_column, bottom_ctrl_5x5,
1465        lab_sea.noseaicedyn & offline_exf_seaice) and TLM output
1466        (1D_ocean_ice_column & tutorial_tracer_adjsens.som81) which had only 12
1467        digits of matching.
1468    o pkg/seaice:
1469       modify lsr-algorithm so that it vectorizes AND converges by using a
1470       "zebra" method: split vector loop into two with step size 2; this
1471       solves a general convergence problem for the JFNK solver on a vector
1472       computer. It has the potential to even improve convergence for
1473       non-vector machines, but it does change the results so it is turned
1474       off by default. To turn on define CPP-flags SEAICE_VECTORIZE_LSR and
1475       SEAICE_VECTORIZE_LSR_ZEBRA in SEAICE_OPTIONS.h
1476    
1477    checkpoint64e (2013/03/05)
1478    o pkg/ecco and several verification experiments:
1479       Remove special versions of the_model_main.F, the_main_loop.F, forward_step.F
1480       from ecco package, and revert to unified routine in model/src/
1481       Adjust verification experiments accordingly, especially gloal_oce_llc90
1482       Should conclude long-standing work by Gael to reconsile the_main_loop with
1483       ECCO and will enable OpenAD's revolve loop in ECCO setup.
1484    o pkg/generic_advdiff:
1485      - implement compressible flow method for multi-dim advection (similar to
1486        gad_som_advect.F); add new option "GAD_MULTIDIM_COMPRESSIBLE" (since
1487        TAF generates many recomputations) to use it; no yet coded with implicit
1488        vertical advection.
1489      - change experiment advect_cs (new output) and advect_xy (same output)
1490        to test compressible flow multi-dim advection.
1491    o pkg/generic_advdiff:
1492      - fix SOM advection for unusual cases (linear Free-Surf in r*, other
1493        cases where linear Free-Surf is not @ k=1, e.g., useShelfIce)
1494    o pkg/seaice:
1495      - fix bug in the no-slip implementation in seaice_calc_strainrates.F, this
1496        bug affects two verification experiments (lab_sea and lab_sea.hb87),
1497        recover old (wrong) results by setting noSlipFac = 2. in
1498        seaice_calc_strainrates.F;
1499      - add another averaging method for etaZ (etaZmethod=3), a mix of 2 and 0
1500      - add runtime parameter SEAICE_JFNKepsilon for that finite difference
1501        gradient in the Jacobian times vector operation (s/r seaice_jacvec)
1502      - fix line search in seaice_jfnk.F (s/r seaice_jfnk_update)
1503    o pkg/seaice: reorganize seaice_lsr.F to be able to reuse more code:
1504      - new subroutines seaice_lsr_tridiagu/v
1505      - introduce loop bounds i/jmin/max to be able to use a restricted
1506        additive Schwarz method, but not used for now.
1507      - rename SEAICE_CALC_LSR_COEFFS into SEAICE_LSR_CALC_COEFFS
1508      - use new subroutines seaice_lsr_tridiagu/v in s/r seaice_preconditioner
1509    o OpenAD support
1510       Reorganize S/R call for overall time-stepping loop to facilitate
1511       OpenAD revolve loop replacement
1512       (new S/R main_do_loop.F)
1513    o model/src:
1514      - add 3-D array 3rd dimension to argument list of S/R ADAMS_BASHFORTH2/3;
1515      - pkg/cheapaml: remove local S/R ADAMS2d and use instead standard S/R
1516        ADAMS_BASHFORTH2.
1517    o pkg/cheapaml:
1518      - add new parameter (default=F, same as before) to disable full domain
1519        (including land) periodicity in X & Y dir.
1520      - new S/R CHEAPAML_COPY_EDGES to copy relaxation field into edges of
1521        prognostics field ; merge the 2 S/R cycle_2d_tracer and timestep_2d_tracer
1522        into single S/R CHEAPAML_TIMESTEP.
1523    
1524    checkpoint64d (2013/02/17)
1525    o pkg/monitor (angular momentum):
1526      - do not add Eta contribution to the total AM if using rigid-lid;
1527      - correct for Adams-Bashforth in zonal-wind part (instead of in AM_eta).
1528      - horizontal discretisation: compute Zonal wind contribution separately for
1529        each component (instead of from cell centered averaged) and use the 4
1530        grid-cell corner averaged value of Omega*(R*cos_Phi)^2 in AM_eta part.
1531      - Check that AM is conserved with linear dynamics (momAdvection=F and linear
1532        FreeSurf) if using vectorInvariant momentum.
1533    o model/src (horizontal grid):
1534      - move initialisation of all horizontal grid arrays to null value
1535        from specific horizontal grid S/R to main S/R INI_GRID;
1536      - add 2 new arrays to project model C-grid velocity on to zonal direction
1537        (similar to AngleCosC & -AngleSinC but at U and V point location) and
1538        compute them in S/R CALC_GRID_ANGLES.
1539    o pkg/seaice: replace a hard coded parameter by a runtime parameter
1540        SEAICE_JFNK_tolIter
1541    o pkg/seaice: introduce a restricted additive Schwarz (RAS) method in
1542        preconditioner for JFNK (run LSR into the overlaps as far as possible,
1543        i.e OLx/y-2, but overwrite the solution in the overlaps)
1544      - extend loop range in seaice_calc_viscosity
1545      - add new parameters SEAICE_OLx/y (default = OLx/y-2)
1546      - add flexible loop ranges to seaice_preconditioner, seaice_calc_lsr_coeffs
1547      - slightly modify loops in tridiagonal solver lsr-preconditioner
1548      - by default remove the extra exchange in seaice_preconditioner with a
1549        replacement of an undocumented CPP flag by SEAICE_PRECOND_EXTRA_EXCHANGE
1550      - modify offline_exf_seaice so that old results without RAS are reproduced
1551        for output.dyn_jfnk.txt
1552      in seaice_fgmres.F (unrelated to RAS)
1553      - add a cpp-flag option for a re-ordered mapping (potentially more
1554        efficient), but because this changes the results, turn it off by
1555        default
1556      - replace the save statement by local common blocks
1557    o utils/matlab:
1558      - fix tile-offset in rdmnc.m when output was produced using EXCH2.
1559      - update cs_grid/bk_line scripts to use load_grid.m (in utils/matlab)
1560        instead of local script "load_cs.m".
1561    o pkg/seaice:
1562      - fix a serious bug in seaice_fgmres.F, s/r seaice_scalprod, connected
1563        to the scalarProductMetric and the unrolling. By chance this does not
1564        change the verification experiment, because of the particular domain
1565        decomposition
1566    o pkg/diagnostics:
1567      - change default missing_value from UNSET_RL to -999.
1568    o pkg/layers: improve vectorization of layers_fluxcalc.F
1569      - step 1: split loops, make TatU/V 2D arrays. This alone reduces the cpu
1570        time spent in this routine by more than a factor of 3 on an NEC-SX8
1571      - step 2: replace search algorithm by a bisection algorithm found in
1572        Press et al. Numerical Recipes in Fortran. This algorithm can be
1573        vectorized and finds the correct bin in approx. log2(Nlayers) steps.
1574        For now, use this algorithm only for TARGET_NEC_SX defined.
1575      - moved the search algorithm into a separate subroutine, that is kept
1576        within the same file for automatic inlining.
1577      - modified catching potential errors
1578    o pkg/ecco:
1579      - add compile switches ALLOW_SHALLOW_ALTIMETRY and ALLOW_HIGHLAT_ALTIMETRY.
1580    o model/src, pkg/autodiff, pkg/ctrl, pkg/grdchk :
1581      - modifications for ALLOW_GENTIM2D_CONTROL
1582      -- forward_step.F, the_main_loop.F : pass options and arrays for adjoint tapes.
1583      -- load_fields_driver.F : add call to CTRL_MAP_GENTIM2D( myTime, myIter, myThid )
1584      -- add xx_gentim2d0/1 in ctrl_ad_check_lev1_dir.h checkpoint_lev1_directives.h etc
1585      -- use ctrl_swapffields.F (new) instead of exf_SwapFFields.F in ctrl_get_gen.F
1586    o model/src:
1587      - account for moist thermodynamics in (dry) potential temperature equation;
1588        update results of experiments: aim.5l_cs (x2), fizhi-cs (std + aqualev)
1589        and cpl_aim+ocn.
1590      - also switch to standard compiler (gfortran, was using ifort previously)
1591        for fizhi-cs experiments reference output.
1592    o pkg/ctrl:
1593      - 1st step toward generic time-varying control variable (2D) via CPP option
1594        ALLOW_GENTIM2D_CONTROL
1595      - note new namelist ctrl_nml_genarr in data.ctrl
1596    o verification/global_ocean.cs32x15:
1597      - switch off OLD_THSICE_CALL_SEQUENCE (both forward and AD code) to use new
1598        thsice calling sequence and update "output.icedyn.txt" output file.
1599    o pkg/ptracers:
1600      - from Ryan A.: code to allow to restart a tracer at regular time interval
1601        specifying a reset frequency and a reset-phase (for each tracers).
1602    o pkg/thsice:
1603      - implement new sequence of calls for thsice+seaice:
1604          previously:   ice-Dyn,ice-Advect,ice-Thermo(thsice)
1605          new sequence: ice-Thermo(thsice),ice-Dyn,ice-Advect
1606      - allows (with temporary CPP option "#define OLD_THSICE_CALL_SEQUENCE"
1607        in CPP_OPTIONS.h) to recover old sequence;
1608      - update diagnostics for Intermediate State thsice diagnostics: now filled
1609        just before advection (instead of just after advection in old sequence);
1610      - update output of experiment offline_exf_seaice (standard test);
1611      - in global_ocean.cs32x15 exp., postpone output.icedyn.txt update
1612        by setting #define OLD_THSICE_CALL_SEQUENCE in CPP_OPTIONS.h
1613    o pkg/aim_v23:
1614      - use tiled array for aim_CO2 and surface wind speed for export to coupler;
1615      - use standard pkg/mdsio routines to read & write CO2 pickup file;
1616      - in-line S/R AIM_AIM2DYN_EXCHANGES in aim_do_physics.F;
1617      - Implement new sequence of calls for seaice advection (with thsice and
1618        seaice diffusion): do ice advection after ice-Thermodynamic (previously
1619        was done before); change aim_do_physics.F (split the bi,bj loops block);
1620      - use same CPP option (OLD_THSICE_CALL_SEQUENCE) to recover old sequence;
1621    o pkg/thsice:
1622      - add a missing EXCH of sIceLoad in thsice_main.F (ocean set-up) for the case
1623        where just seaice diffusion is used without seaice-dynamics.
1624    
1625    checkpoint64c (2013/01/18)
1626    o pkg/seaice:
1627      - add a parameter JFNKres_tFac that can replace JFNKres_t
1628        (= JFNKres_tFac*JFNKresidual before JFNK solver)
1629      - add a line search option to the JFNK solver
1630      - move update of u/vIce and computation of initial residual into a separate
1631        routine (same file); makes the code a little easier to read (?)
1632      - the line search requires computation of the residual and for some reason
1633        I cannot do the update of u/vIce at the beginning of the Newton loop
1634        without changing the results, so we move computation of the new residual
1635        also to the end of the Newton loop, even without the line search
1636    o pkg/mdsio:
1637      - write missing value (corresponding to undefined array value) to meta files;
1638        skip this if missing value is one (UNSET_RL would be a better value for the
1639        case of undefined missing value but it's current the default missing-value);
1640        Also update mdsio_read_meta.F (reading timeInterval & missing-value).
1641    o pkg/exf & thsice:
1642      - for diagnostics purpose, fill-up and update Qsw array (+ fill the
1643        diagnostics) even when SHORTWAVE_HEATING is #undef;
1644    o verification/cfc_example:
1645      - turn on pkg/layers with pkg/diagnostics (to test pkg/layers and to
1646        illustrate how to use it).
1647    o verification/offline_exf_seaice:
1648      in input: add SEAICErestoreUnderIce=.TRUE., and reduce size of forcing
1649        files to only one time-record.
1650      in input.thermo: narrow the 2 bands of low initial ice-concentration near
1651        N & S edges; switch on SEAICErestoreUnderIce=T; use pkg/diagnostics for
1652        snapshot output; same mcPheePiston value as in thsice with
1653        surf-current=0.2m/s.
1654      in input.thsice: similar set-up as in input.thermo (channel with same seaice
1655        initial conditions).
1656    o verification/cfc_example:
1657      - update file "data" with more standard choice (default rotationPeriod,
1658        exactConserv=T, reduce ivdc_kappa to 10, remove multiDimAdvection=F,
1659        set deltaTFreeSurf to deltaTtracer) and update the output.
1660    o pkg/layers:
1661      - fix bolus part so that it compiles with #undef GM_BOLUS_ADVEC;
1662      - ensure that "layers_bolus" is switched to False when useGMRedi=False.
1663    o verification/offline_exf_seaice:
1664      - set all {field}period to zero for constant-in-time forcing (not tested
1665        anywhere else).
1666    o verification/offline_exf_seaice:
1667      - dyn_lsr  : use pkg/seaice S/R (instead of pkg/thsice) to advect sea-ice;
1668      - dyn_jfnk : use pkg/thsice S/R (instead of pkg/seaice) to advect sea-ice.
1669    o model/src:
1670      - implement Finite-Volume method for (hydrostatic) presure gradient
1671        from S.-J. Lin (QJRMS 1997), for atmosphere using sigma-coordinate.
1672    o pkg/seaice: implement EVP* by Lemieux et al. (2012).
1673      - In order to be compatible with the default EVP code, this requires changing
1674        the EVP code around a little; and because any small change immediately
1675        breaks the lab_sea.hb87 verification experiment, the reference output is
1676        updated two times (each time the remaining aggrement was only 2 digits):
1677        - after replacing 1/dt by 1*recip_dt with a precomputed recip_dt
1678        - after replacing 1/(1+0.5*dt/tau) by a/(a+1), with a=2*tau/dt
1679        The adjoint test lab_sea.evp also needed to be updated.
1680      - Turn on EVP* by setting SEAICE_deltaTevp as before, and setting
1681        SEAICEuseEVPstar=.true.; for EVP* SEAICE_deltaTevp does not need to be
1682        a factor of SEAICE_deltaTdyn, and you can set the number of EVP steps
1683        explicitly with SEAICEnEVPstarSteps (thereby overriding the default of
1684        INT(SEAICE_deltaTdyn/SEAICE_deltaTevp)). Controlling EVP* is deliberately
1685        kept obscure, because I need to test it a little more.
1686    o pkg/cheapaml:
1687      - fix few incorrect type (_RL/_RS) in subroutine calls.
1688    o pkg/seaice:
1689      - new S/R SEAICE_MAP_RS2VEC (similar to SEAICE_MAP2VEC) to map _RS arrays
1690        to _RL vector; this fixes JFNK code when compiling with "-use_r4" option.
1691    o model/src:
1692      - add a warning if using select_rStar=2 with nonlinFreeSurf <> 4;
1693        change (in input_ad*/data) select_rStar from 2 to 1 for AD verification
1694        experiments global_ocean.cs32x15 & tutorial_tracer_adjsens (+ update output)
1695    o pkg/cheapaml:
1696      - replace "273.1 _d 0" by celsius2K in pkg/cheapaml/cheapaml.F and
1697        update output of experiment cheapAML_box.
1698      - store in CHEAPAML.h coeffs ssq[0:2] for saturation specific humidity,
1699        and set them only in one place (cheapaml_readparms.F).
1700      - replace "273.16 _d 0" by celsius2K & replace "3.14159 _d 0" by constant "PI"
1701      - remove re-setting of main-model parameter "celsius2K" (in cheapaml_readparms)
1702        and re-setting of cheapAML params "lath" & "p0" (in cheapaml_init_varia).
1703    o model/src/the_main_loop.F:
1704      - fix revision 129 : need both ALLOW_ECCO and ALLOW_ECCO_EVOLUTION.
1705    o pkg/seaice:
1706      - remove legacy branch code.
1707      - retire SEAICE_GROWTH_LEGACY and SEAICE_CAP_HEFF accordingly.
1708    o verification/*/code*/SEAICE_OPTIONS.h:
1709      - remove documentation for retired CPP flags (SEAICE_GROWTH_LEGACY,
1710        SEAICE_CAP_HEFF).
1711    o pkg/cheapaml:
1712      - use standard routine (S/R GET_PERIODIC_INTERVAL) to decide when it is time
1713        to load new forcing fields.
1714      - add missing "_d 0" where it's needed; + some editing (improve indentation).
1715      - remove switch to "-r8" compiler option (no longer needed) in verification
1716        cheapAML_box, keep same output (small trucation error differences).
1717    o verification/offline_exf_seaice:
1718      - add thermodynamics only test.
1719    o verification/cheapAML_box:
1720      - split the domain in 8 (2x4) tiles; add MPI and multi-threaded test;
1721        keep same output (same 14 digits for cg2d).
1722      - switch on "-r8" compiler option (some numerical values are missing
1723        the "_d 0") and update output (only 6 digits for cg2d were preserved).
1724    
1725    checkpoint64b (2012/12/24)
1726    o pkg/cheapaml:
1727      - remove un-used variables (Qnet,EmPmR) from pickup files.
1728      - store tendency of advected variables into cheapaml pickup file
1729        and fix the AB-2 restart.
1730    o verification/offline_exf_seaice and lab_sea adjoint:
1731      - switch to new code (#undef SEAICE_GROWTH_LEGACY).
1732      - switch to 4 time steps in offline, consistent with lab_sea.
1733      - match parameters from SEAICE_GROWTH_LEGACY branch in data.seaice.
1734      - update results after change of experiment seaice.
1735    o pkg/seaice:
1736      - remove option SEAICE_MULTICATEGORY; has been replaced with run-time
1737        parameter SEAICE_multDim. Issue a warning if SEAICE_MULTICATEGORY is
1738        still defined since SEAICE_multDim needs to be set to MULTDIM value (from
1739        SEAICE_SIZE.h) to recover previous #define SEAICE_MULTICATEGORY default.
1740    o model/src:
1741      - add run-time parameter to select CG2D solver minimum-residual solution
1742        (in case of a poor convergence).
1743    o pkg/seaice/seaice_lsr.F
1744      - move calculation of matrix coefficients into new
1745        S/R SEAICE_CALC_LSR_COEFFS; for now this routine remains in the same
1746        file; the main purpose of this change is to be able to reuse the code
1747        in S/R SEAICE_PRECONDITIONER
1748      - modify the computation of the residual so that the mass of sea-ice
1749        is not used twice; this simplifies the calculations, but since
1750        the residual is never used except when LSR_mixIniGuess.ge.4---and this is
1751        not tested in testreport---this does not affect the testreport results.
1752    o verification/seaice_obcs:
1753      - disable SEAICE_GROWTH_LEGACY; reset input files to match those of
1754        verification/lab_sea/input.salt_plume; changes results/output.txt*
1755    o model/src:
1756      - adapt quasi-hydrostatic formulation to work with p or p* coordinate.
1757    o pkg/seaice:
1758      - improve description of parameters in seaice_fgmres.F and start
1759        cleaning up the code
1760      - change name of SCALPROD to SEAICE_SCALPROD and modify meaning of
1761        second argument
1762      - add a metric based on grid cell area to SEAICE_SCALPROD; update
1763        results of offline_exf_seaice.dyn_jfnk
1764      - compute initial residual norm in seaice_jfnk based on SEAICE_SCALPROD
1765    o pkg/aim_v23:
1766      - fix an other bug in dissipation heating (grid-cell area was missing).
1767    o model/src + pkg/seaice:
1768      - add global (multi-tile) linear solver for pair of tri-diagonal system
1769        along X and Y lines, respectively for U and V component.
1770        Note: 1) MPI and cube-exchange not yet coded.
1771            2) probably not accurate for poorly conditioned / large size problem.
1772      - add option for SEAICE_LSR to use global (multi-tile) tri-diagonal solver;
1773        default: not compiled and not used.
1774    o pkg/seaice:
1775      - first attempt at a multi-threaded fgmres solver for the JFNK solver:
1776        introduce bi/bj loops and use global_sum_tile_rl instead of
1777        mpi_allreduce in seaice_fgmres.F
1778      - improve diagnostics output for fgmres solver (seaice_fgmres.F)
1779      - replace a few unnecessary goto statements by if-blocks  (seaice_fgmres.F)
1780      - add a verification experiment for JFNK in offline_exf_seaice
1781    o verification:
1782      - change (for now, only fwd test) offline_exf_seaice experiment:
1783        use a re-entrant channel with idealized coastline (trapezoidal shape)
1784        at southern boundary to explore seaice dynamics and thermodynamics
1785        with simple forcing. Main set-up has dynamics+thermo and SST relaxation;
1786        secondary test (input.thsice) use thermodynamics only with SST relaxation.
1787      - add seaice-dynamics only secondary test using LSR and pkg/thsice advection.
1788    o pkg/exf:
1789      - disable "sstExtrapol" when Nr=1
1790    o verification:
1791      - add new experiment "cheapAML_box" (simple 1 layer set-up from Bruno Deremble)
1792        to test pkg/cheapaml.
1793    o pkg/aim_v23 & pkg/shap_filt:
1794      - fix dissipation heating (erroneous gravity multiplication factor).
1795    o pkg/seaice:
1796      - remove unused field pressPre from jfnk solver
1797      - rename two subroutines in seaice_preconditioner.F
1798    o eesupp/src:
1799       - S/R MDSFINDUNIT avoids reserved unit numbers (scrUnit1, eeDataUnit ...)
1800    o pkg/seaice/seaice_preconditioner.F: fix preconditioner once again
1801       - remove wrong parts of the rhs and the lhs (were in there
1802         because I did not understand the concept of this preconditioner)
1803       - add an exchange between u- and v-sweep. This increases communication
1804         by a factor of two but improves the convergence of jfnk. Ideally,
1805         one would like the u- and v-sweep to be independent. So far within
1806         undocumented ifdefs
1807       - reorganize the extra computations for printing the residuals
1808    o tools/genmake2:
1809      - comment out the "mpif.h" include in NetCDF test programm (for MPI built)
1810        since it's not necessary (and was preventing to use MNC in some cases).
1811    
1812    checkpoint64a (2012/11/16)
1813    o pkg/autodiff:
1814      - improve pkg-internal logical parameter switch (inAd/inFwd mode) so that
1815        autodiff_readparms.F no longer depends on calling order (within
1816        packages_readparms.F) and no longer requires to include ${PKG}_PARMS.h):
1817        rename param turnFreeDriftInAdMode to SEAICEuseFREEDRIFTswitchInAd
1818        and change param SEAICEuseDYNAMICSinAdMode to SEAICEuseDYNAMICSswitchInAd.
1819    o pkg/obcs:
1820      - adding tidal velocity forcing capability to obcs
1821        for usage example, see verification/seaice_obcs/input.tides
1822    o pkg/seaice:
1823      - turn the LSR-relaxation parameters WFAU/V into runtime parameters
1824        SEAICE_LSRrelaxU/V
1825      - introduce runtime parameter SEAICEetaZmethod (=0 by default)
1826    o pkg/aim_v23:
1827      - implement heating from friction (bottom friction and stratospheric drag).
1828    o pkg/shap_filt:
1829      - fix diagnostic "SHAP_dKE" (was 2 time smaller); implement heating from
1830        dissipation but only for Shap_funct=2, active when addFrictionHeating=T.
1831    o model/src:
1832      - move AddMass common block from DYNVARS.h to FFIELDS.h; allow to read-in
1833        time-constant addMass field from file (addMassFile);
1834      - support for heating due to friction (and Kinetic Energy dissipation):
1835        add option, run-time switch and 3-D field array + support code ; each pkg
1836        or S/R can add heating contribution (if there is a sink of KE); the sum is
1837        accounted for as a Temperature tendency term (EXTERNAL_FORCING_T).
1838    o pkg/seaice:
1839      - complete merge of ITD code into seaice_growth.F
1840        from MITgcm_contrib/torge/itd/code/
1841        no verification so far, but Torge Martin tested
1842        "1-D test case and Beaufort set up;
1843        deliver okay results after 1 model year."
1844      - complete merge of SEAICE_SIZE.h into all relevant routines
1845      - move computation of eta at Z-points into calc_viscosities
1846        + introduce global field etaZ
1847        + add different methods for computing etaZ, for now the old
1848          method (simple averages of eta to Z-points) is hardwired
1849        + replace etaMeanZ by etaZ in seaice_lsr, seaice_calc_residual,
1850          seaice_preconditioner
1851      - simplify computations for SEAICE_ZETA_SMOOTHREG
1852      - seaice_preconditioner:
1853        + replace one remaining press by pressLoc (mistake)
1854        + adjust printing of residuals
1855      - improve I/O of diagnostics of JFNK in seaice_jfnk.F:
1856        + add (SEAICE.h) and rename some counters (initiliased in
1857          seaice_init_fixed.F)
1858        + add _BEGIN/END_MASTER (myThid)  around print statements
1859        + print total number of iterations and failures over SEAICE_monFreq
1860          interval to STDOUT
1861      - move control over output-messages by fgmres to seaice_jfnk to save
1862        some operations
1863      - move resetting initial guess for fgmres outside of seaice_fgmres_driver
1864        in order to make restarts with sol .ne. zero (fgmres with restarts)
1865        (seaice_jfnk.F, seaice_fgmres.F)
1866      - seaice_calc_l/rhs.F: replace maskW/S by maskInW/S; this fixes
1867        a serious convergence problem when open boundaries are involved
1868    o pkg/ggl90: fix computation of control volumes for the case of
1869      ALLOW_GGL90_HORIZDIFF (probably not used very often): move control volumes
1870      up half a grid cell from C-centered to W-centered (pointed out by C. Eden)
1871    o pkg/seaice: simplify seaice_evp by avoiding use of extra fields u/vIceC
1872    o pkg/autodiff
1873      - Add inAdMode switch for SEAICEuseDYNAMICS:
1874        SEAICEuseDYNAMICSinAdMode
1875        (extend logic in ADAUTODIFF_INADMODE_SET)
1876    o pkg/seaice
1877      - Step 1 of merging ice-thickness distribution (ITD) code from
1878        MITgcm_contrib/torge/itd/ (author: Torge Martin)
1879        The code implements concept laid out in Thorndike et al. (1975);
1880        code is enabled via CPP flag SEAICE_ITD
1881        nITD (in SEAICE_SIZE.h) defines number of ice thickness categories;
1882        code is not complete yet!!
1883      - SEAICE_SIZE.h now included in almost all seaice routines
1884    o verification (using seaice):
1885      - switch back seaice-dynamics (+ lower SOLV_MAX_ITERS) in ADM exp.
1886        global_ocean.cs32x15.seaice ; update results.
1887      - compile B-grid dynamics in FW test exp 1D_ocean_ice_column ;
1888      - compile C-grid dynamics with #define SEAICE_ALLOW_JFNK in FW test exp
1889        offline_exf_seaice (previously compiling B-grid).
1890    o pkg/exf:
1891      - fix some STOP conditions in exf_check.F (from Aug 28, modifs did not allow
1892        to specify neither just 1 comp of wind or wind-stress, nor no surface momentum
1893        forcing): just replace CPP option ALLOW_ATM_WIND with run-time param useAtmWind.
1894    o pkg/layers (adjust changes from Sept 19):
1895      - do snap-shot output and fill diagnostics from inside iLa loop (layers_calc.F)
1896        this allows to remove "layers_maxNum" dimension from all layers arrays.
1897    o pkg/layers (adjust changes from Sept 19):
1898      - remove ALLOW_LAYERS_OUTPUT ; fix snap-shot and time-ave output ;
1899      - snap-shot extended to all type of layers (not just the 1rst type);
1900      - remove layers variables when corresponding CPP option is undef.
1901    o pkg/layers:
1902      - rename pkg/layers variable and add new output (layer exist & un-weighted
1903        velocity in layer)
1904    o pkg/seaice:
1905      - simplify (?) ocean-drag coefficent computations by using
1906        the same routine in all three solvers (saves some code lines)
1907      - remove global fields DRAGA and DRAGS from C-grid code and
1908        declare them locally in lsr.F (the only place where they are
1909        still used)
1910      - update AD output of lab_sea.evp (very sensitive anyway).
1911    o pkg/seaice: add Jacobian-free Newton Krylov solver for ice dynamics
1912      (Lemieux et al. 2010, 2012). Turn on with the usual SEAICE_ALLOW_JFNK
1913      and SEAICEuseJFNK=.true. A few things to note:
1914      - involves a FGMRES, that is parallel but very inefficient,
1915        because of many scalar products (global sums) in the Gram-Schmidt
1916        orthogonalization method. Needs to be replaced. Original code
1917        from J.-F. Lemieux
1918      - preconditioner for FGMRES is a stripped down version of LSOR
1919      - SOLV_MAX_ITERS is now used for LSOR as a solver and as a
1920        preconditioner. For the preconditioner, the default is set to 10.
1921      - Jacobian times vector is computed with finite differences
1922      - marginally related to JFNK-solver: add a smooth regularization for
1923        zeta with tanh that will improve convergence (Lemieux and Tremblay,
1924        2009) for any implicit solver (not implemented for EVP because EVP
1925        does not need this regularization in the first place). Define
1926        SEAICE_ZETA_SMOOTHREG in SEAICE_OPTIONS.h to use.
1927    o eesupp/src:
1928      - check in genmake2 that intrinsic S/R flush is available.
1929      - add S/R to flush IO unit (if intrinsic S/R flush is available)
1930      - flush standard & error msg unit before MPI termination
1931      - if debugMode, flush IO unit after printing msg
1932    o pkg/ctrl:
1933      - ctrl_unpack.F, ALLOW_GENARR3D_CONTROL code: fix missing argument in call
1934        to ctrl_set_unpack_xyz.
1935    
1936    checkpoint64 (2012/10/09)
1937    o pkg/shelfice
1938      - in mom_fluxform.F, mom_vecinv.F:
1939        CALL SHELFICE_V_DRAG(bi,bj,k,vFld,KE,KappaRU,vF,myThid)
1940        Bug fix KappaRU -> KappaRV
1941        does not change verification/isomip but may change other setups
1942        (presumably constant KappaRU=KappaRV)
1943      - fix diagnostics SHIU/Vdrag (thanks to Tom Millgate)
1944    o pkg/obcs:
1945      - fixed some indexing bugs in obcs_seaice_sponge.F
1946      - added obcs relaxation subroutines for HSALT and HSNOW
1947      - changes verification/seaice_obcs/results/obcs_seaice_sponge.F
1948  o pkg/seaice:  o pkg/seaice:
1949    - add "multicategory" parameterization for snow in analogy to ice,    - add "multicategory" parameterization for snow in analogy to ice,
1950      default is off for now.      default is off for now.

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