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revision 1.1743 by mlosch, Mon Sep 24 15:07:38 2012 UTC revision 1.2028 by jmc, Fri Jul 18 13:37:32 2014 UTC
# Line 4  $Name$ Line 4  $Name$
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    checkpoint65 (2014/07/18)
8    o pkg/fizhi:
9      - add parenthesis around fizhi tendencies in fizhi_tendency_apply.F: this
10        affects results at machine truncation level. Update output of experiments
11        fizhi-cs-32x32x40 (12 digits for cg2d) & fizhi-cs-aqualev20 (13 digits).
12    o pkg/seaice: more clean up
13      - rename TAF common block tapes to be more consistent and remove
14        unnecessary duplicates
15      - add store directives to remove more recomputations, but use smaller
16        tapes (and adjust keys) when SEAICE_LSR_ADJOINT_ITER is undefined.
17        The idea behind this flag is to reduce the memory footprint when the
18        adjoint of the LSR is not required. As of now, defining the flag
19        SEAICE_LSR_ADJOINT_ITER increases 4 common block tapes for 2D field by
20        a factor of SOLV_MAX_FIXED (=500 by default in SEAICE_SIZE.h).
21        For experiment offline_exf_seaice, this means on a linux box with gfortran
22        nearly a factor of 10 (but keep in mind there is mostly seaice code in
23        this experiment):
24        > size mitgcmuv_ad
25        text    data        bss     dec        hex  
26        5100659 1216  220458952  225560827  d71c8fb
27        5339425 1200 1868783272 1874123897 6fb4dc79 (SEAICE_LSR_ADJOINT_ITER)
28        but only a moderate increase of 36% for global_ocean.cs32x15:
29        text    data        bss     dec        hex
30        6695027 1648 1014578664 1021275339 3cdf6ccb
31        6695203 1648 1382505320 1389202171 52cd8afb (SEAICE_LSR_ADJOINT_ITER)
32      - note: there are still recomputations in global_ocean.cs32x15 and
33        offline_exf_seaice and the gradient agreement changes (gets a
34        little worse) for global_ocean.cs32x15 (-> update output_adm.seaice.txt)
35      - in general, the AD gradients still are wrong
36    o OpenAD
37      - clean up code_oad/ directories somewhat by moving files
38        dontCompile, dontTransform, keepOriginal to OAD_support/
39    o model/src:
40      - using MOM fluxform and Non-Lin Free-Surf with momDissip_In_AB=F
41        (not currently tested): add dissipation terms before NLFS rescaling of
42        tendencies (previously done after).
43    o pkg/diagnostics:
44      - write stats-diags in ascii file with more digits (same as in monitor).
45    o pkg/down_slope:
46      - drop the bi,bj dimension of argument recip_hFac in S/R DWNSLP_APPLY; with
47        NLFS (not tested), use new recip_hFac value in order to conserve tracer.
48    o model/src:
49      - new file "apply_forcing.F" containing all the code previously in
50        external_forcing.F, but with new argument list: pass, as new argument,
51        the current level tendency array to update (instead of a direct update
52        of the common bloc array). Change the corresponding calls.
53      - add CPP option USE_OLD_EXTERNAL_FORCING (default is undef) to use
54        EXTERNAL_FORCING_U,V,T,S subroutines (for backward compatibility).
55    o pkg/seaice/seaice_lsr, a little bit of clean up
56      - rearrange some code blocks, so that now all calculations for
57        setting up the right-hand-sides done within one single block
58        (I find that easier to read and understand)
59      - rearrange freedrift-code to reduce the number of ifdefs
60      - adjust some indentations and comments
61    
62    checkpoint64z (2014/07/10)
63    o model/src and several pkgs:
64      - change argument list of all S/R called from external_forcing.F and
65        called from ptracers_forcing.F (renamed to ptracers_apply_forcing.F)
66        to pass, as argument, the current level tendency array to update
67        (instead of a direct update of the common bloc array).
68      - change also (in the same way) argument list of PTRACERS_APPLY_FORCING;
69      - rename taueddy_external_forcing.f to taueddy_tendency_apply.F
70    o pkg/seaice/seaice_lsr.F
71      - always initialize local arrays in seaice_lsr_tridiagu/v
72      - add more local tapes to seaice_lsr_tridiagu/v
73      - move storing u/vice(:,:,bi,bj) out of seaice_lsr_tridiagu/v, but
74        keep it in bi/bj loop; this seems to be essential
75      - gradients are still wrong but only by 4-7 orders of magnitude
76        instead of 15 orders of magnitude, lab_sea improves a little
77    o pkg/seaice
78      - (pkg/autodiff) remove storing/restoring of seaiceMaskU/V that
79        generates unnecessary code in seaice_lsr_ad
80      - add more store directives in seaice_lsr to avoid unnecessary code
81        in seaice_lsr_ad
82      - exclude some residual computations in seaice_lsr when
83        ALLOW_AUTODIFF_TAMC is defined in order to avoid unnecessary code
84        in seaice_lsr_ad
85      - add more storing, a new tape (model/src/the_main_loop.F) and
86        another key for SEAICE_LSR_VECTORIZE_ZEBRA (the local keys ilockey
87        and klockey should be checked by a specialist)
88      - modify ( define SEAICE_VECTORIZE_LSR and SEAICE_LSR_ADJOINT_ITER )
89        and update lab_sea after previous changes in pkg/seaice below
90    o pkg/autodiff:
91      - introduce useSmoothCorrel2DinAdMode, SEAICEapproxLevInAd, and
92        viscFacInAd : run time parameters allowing for adjoint switches
93        note : logic for useSmoothCorrel2DinAdMode is in ctrl_readparms.F
94    o pkg/ecco:
95      - introduce cost_gencost_boxmean.F that computes a box mean
96        temperature (for use in adjoint sensitivity studies).
97    o model/src/set_defaults.F : initialize viscFacAdj to 1.
98    o pkg/mom_common/mom_calc_visc.F:
99      - ifdef ALLOW_AUTODIFF then include viscFacAdj factor.
100    o pkg/seaice/seaice_summary.F:
101      - statement for SEAICEadjMODE now in autodiff_readparms.F
102    o pkg/seaice:
103      - remove some store directives and add new ones in an effort to get
104        finally rid off the recomputation warnings. This is successful
105        when SEAICE_VECTORIZE_LSR ***and*** SEAICE_LSR_ADJOINT_ITER are
106        defined (i.e. no extensive recomputation warnings left), but there
107        are still too many recomputations on the solver iteration level
108      - define SEAICE_VECTORISZE_LSR in offline_exf_seaice/code_ad/SEAICE_OPTIONS.h
109      - move definition of MPSEUDOTIMESTEPS into TAMC-block in
110        SEAICE_SIZE.h
111      - add a store directive in S/R seaice_calc_viscosities
112    o pkg/seaice (ITD code):
113      - fix definition of Hlimit for multi-threaded case
114      - use double precision arithmetic to compute Hlimit: this affects results;
115        update output of experiment seaice_itd.
116    o replace content of verification/seaice_itd
117      - instead of a 1D column use the configuration of offline_exf_seaice
118        to test the ice thickness distribution code with ridging
119      - this is a first shot at this experiment
120      - change of some defaults of ridging parameters SEAICEhStar (from
121        100 to 25) and SEAICEmuRidging (from 5 to 3) in seaice_readparms.F
122        and lot of new comments.
123    
124    checkpoint64y (2014/06/20)
125    o pkg/seaice/seaice_reg_ridge.F:
126      - modify the regularization of very small volumes of ice; only check
127        total volume HEFF, and do not apply correction to individual ice
128        classes because that leads to funny patterns in the heat and fw-fluxes
129        into the ocean. Adjust seaice_itd/results/output.txt
130      - replace nITD by SEAICE_multDim in loop-ranges
131    o pkg/exf:
132      - add code to process the case field period = -12. with UV interpolation.
133      - move debug print (formerly active when exf_verbose=T) from EXF_getFFieldRec
134        into S/R that calls it (i.e., exf_set_gen.F, exf_set_uv.F & obcs_exf_load.F)
135    o verification/global_with_exf:
136      - switch all fields period to -12. (was previously untested) in input/data.exf
137        (but keep secondary test ".yearly" unchanged); update the reference output.
138    o pkg/cal:
139      - new calendar type "noLeapYear" for 365 days calendar without any leap year.
140    o pkg/exf:
141      - new integer parameter "exf_debugLev" (default set to main model debugLevel)
142        to replace logical switch "exf_verbose"
143      - report in STDOUT when loading a new record (if exf_debugLev >= 3)
144    o pkg/sbo:
145      - update from Katherine Quinn: evaluate mass directly from density and SSH
146        (budget using Finite Volume method) instead of from bottom pressure.
147      - allow testreport to collect few selected SBO output ; tested in exp.
148        global_ocean.90x40x15 (after updating the results, to include SBO output).
149      - fix some multi-threading issues (in output part).
150    o model/src & most packages:
151      - always call {PKG}_READPARMS even if corresponding use{PKG}=F;
152      - in {PKG}_READPARMS, in case use{PKG}=F: add a call to new S/R
153        PACKAGES_UNUSED_MSG to print a weak warning when parameter file
154        "data.{pkg}" exist ; and leave the S/R (return) just after.
155      - more standard LAND pkg interface (land_init_fixed.F, land_check.F).
156        + call LAND_READPARMS from packages_readparms.F
157    o pkg/seaice:
158      - remove code that resets useThSice in S/R seaice_readparms and
159        replace it by a warning in S/R seaice_check
160      - remove parameter MULTDIM, replace with nITD and runtime
161        parameter SEAICE_multDim (still hard-wired to nITD if
162        SEAICE_ITD is defined)
163    
164    checkpoint64x (2014/05/24)
165    o verification/lab_sea:
166      - update adjoint and TLM output following changes to pkg/salt_plume
167      - un-do the update after putting back local recip_Cp in few places.
168    o pkg/salt_plume: modifications by An Nguyen:
169      - add capability to do brine rejection (salt-plume) as function of
170        volume+tracers (instead of only salinity tracer).
171      - conserve volume by exchanging volume from each kLev to above to
172        accommodate in-coming brine volume
173      - store surface and klev exchanged fraction + volume in 4 new 3-d arrays
174      - switch KPP surf buoyancy due to brine forcing to 3-d
175        (3 more 3-d arrays, 2 for SPforcing[T,S], 1 for boplume)
176      - add salt_plume_volfrac, salt_plume_apply, salt_plume_tendency_apply_t
177      - unrelatedly, also add ad-hoc capability to vary salt_plume scheme
178        in East/West Arctic.
179    o pkg/sbo:
180      - incorporate modifications from Katherine Quinn to enable the use of sbo
181        pkg in ECCO-v4 set-up ; remove SBO-TimeAve output ; add monitor-like
182        output for future testreport verification (unfinished).
183    o pkg/atm_phys:
184      - change diagnostics (AtPh_Trf & AtPh_Qrf) of DARGAN_BETTSMILLER S/R:
185        skip the reseting of t_ref & q_ref to initial t & q ; this preserve the
186        output of S/R CAPECALCNEW (Parcel temp & q) for diagnostics.
187    o pkg/seaice
188      seaice_calc_ice_strength.F: modify expression to avoid divisions
189        (affects truncation)
190      seaice_do_ridging.F: clean up the insectarium
191      - fix a bug that was compensated by areaScaling (-> remove areaScaling code)
192      - added SEAICEsnowFracRidge to redistributed snow (2nd bug)
193      - set closing/openingRate to zero where no extra iteration is need (3rd bug)
194      - add some debugging information and error messages (warnings)
195    o model/src: modifications relatd to atmosphere p*:
196      - Switch to more accurate p* coordinate slope term (calc_grad_phi_hyd.F)
197      - With p* or Sigma-P, use constant reference Pot.Temp (thetaConst) instead
198        of vertical profile tRef in geopotential background and anomaly.
199      - Acount for true p* correction in theta <-> T conversion in pkg/aim_v23
200        and pkg/atm_phys.
201      - Update FWD output of experiments: aim.5l_cs (x2), fizhi-cs-32x32x40,
202        fizhi-cs-aqualev20, fizhi-gridalt-hs, tutorial_held_suarez_cs, cpl_aim+ocn.
203    o pkg/seaice: fix a bug in seaice_prepare_ridging.F, forgot a sqrt
204    o pkg/ptracers: compute ptracer source/sink due to linear free surface.
205        not used right now, but can be used in BGC packages to fix conservation.
206    o pkg/dic, pkg/gchem: move tracer_meanarea to gchem, so it can be used by
207        other packages too.
208    o pkg/seaice/seaice_calc_ice_strength.F: replace SEAICE_rhoSnow by
209        SEAICE_rhoIce in the Rothrock (1975)-type strength calculations (bug fix)
210    o model/src:
211      - since we have several heat capacity (even in model/src), define "recip_Cp"
212        as local variable (no longer in common block) to avoid any confusion.
213      - add thetaConst in PARAMS.h (to be used with pStar or sigma-P coords).
214    o pkg/exf:
215      - from Jeff Scott: add option (#define EXF_CALC_ATMRHO) to calculate local
216        air density as function of air Temp, Humidity and atm pressure.
217    
218    checkpoint64w (2014/05/02)
219    o verification:
220      - update output_adm.txt files for experiment global_ocean.cs32x15 (seaice &
221        seaice_dynmix) and lab_sea (primary test & noseaicedyn): moving/changing
222        code from seaice_growth.F & seaice_advdiff.F to new ridging routines
223        seaice_reg_ridge.F seaice_do_ridging.F affects AD gradient
224        (down to 8-7 matching digits for global_ocean and 5-6 for lab_sea).
225    o model/src: for atmosphere in p* coords:
226      - store factor rStarFacC**atm_kappa (= pStarFacK) in common block
227      - implement more accurate p* coordinate slope term (in calc_grad_phi_hyd.F),
228        but not yet activated.
229    o pkg/seaice: fix restart problem for ITD with new ice strength parameterisation:
230      - move computation of opnWtrFrac = 1-AREA to before computing ice strength
231      - this changes the results (but not for any verification experiment, because
232        none tests this), but avoids having an extra field in the restart files
233    o pkg/seaice: remove global variable TICE (not needed)
234      - replace by TICES or local variable where necessary (cost_seaice_test,
235        seaice_diagnostics_state)
236      - move copying TICE to TICES from seaice_check_pickup to seaice_read_pickup
237      - use specific read/write routines for reading and writing individual leves
238        of a multilevel field
239    o pkg/ctrl & model/inc:
240      - move additional anomaly fields of control vars (related to options:
241         ALLOW_KAPGM_CONTROL, ALLOW_KAPREDI_CONTROL and ALLOW_BOTTOMDRAG_CONTROL)
242        from DYNVARS.h into new header file: CTRL_FIELDS.h
243    o pkg/seaice: some small modifications to the ridging code
244      - make fw2ObyRidge a global variable and add the freshwater flux to
245        seaice_growth
246      - pass actual thickness from seaice_prepare_ridging, so that it is
247        computed only in one place and compute it in the same way as in
248        seaice_growth
249      - initialise more fields in seaice_do_ridging that where cause floating
250        point exceptions over land
251    o pkg/seaice: preparations for ridging code and first real ridging code
252      - move most of "PART 1" of S/R seaice_growth into a new and separate
253        S/R seaice_reg_ridge that will both regularize the state variable after
254        advection call the actual ridging routine;
255      - requires to make 5 fields global fields: d_HEFFbyNEG,d_HSNWbyNEG,
256        d_AREAbyRLX,d_HEFFbyRLX,saltFluxAdjust;
257      - remove ridging code from seaice_advdiff
258      - clean up remaining part 1 of seaice_growth in an attempt to make it
259        more readable (this is probably subjective)
260      - call seaice_itd_redist once in the initialisation phase to have the initial
261        conditions in the correct category
262      - finally: add new ridging routine for ITD code
263    
264    checkpoint64v (2014/04/11)
265    o pkg/ecco:
266      - add runtime parameters mdt[start,end]date[1,2]
267      - rename variable "tpmean" as "mdt" and "topexmeanfile" as "mdtdatfile"
268    o pkg/seaice:
269      - make deltaC a global variable, so that it can be used in ridging code
270      - first step towards ridging: introduce new routines that compute
271        ice strength based on ridging parameters
272      - add diagnostic for HSNOWITD
273      - add opnWtrFrac as a global variable (required for ridging scheme)
274    o pkg/salt_plume + pkg/seaice/seaice_growth.F
275      - add SALT_PLUME_IN_LEADS flag to activate pkg/salt_plume only when ice
276        AREA exceeds a threshold (code contributed by I.Fenty in 2011)
277    o verification/hs94.1x64x5:
278      - leave ALLOW_AUTODIFF_TAMC undefined in code_oad/AUTODIFF_OPTIONS.h
279      - do not use ECCO_CPPOPTIONS.h anymore for TAF & OpenAD Adjoint tests.
280    o autodiff:
281      - Start to include explicitly AUTODIFF_OPTIONS.h, COST_OPTIONS.h,
282        and CTRL_OPTIONS.h in src files (to enable to skip the ECCO_CPPOPTIONS.h)
283        For now, only in pkgs used in verification/hs94.1x64x5.
284      - Replace ALLOW_AUTODIFF_TAMC by ALLOW_AUTODIFF (except for tape/storage
285        which are specific to TAF/TAMC).
286      - Replace ALLOW_AUTODIFF_OPENAD by ALLOW_OPENAD:
287        since ALLOW_OPENAD is defined in PACKAGES_CONFIG.h (any time pkg/openad
288        is compiled), this simplifies/reduces which *_OPTIONS.h file to include.
289      - OpenAD: change Makefile to generate the appropriate AD_CONFIG.h when
290        building mitgcmuv_ad (make adAll).
291    o pkg/ecco:
292      - cost_gencost_seaicev4.F:
293         reformulate proxy cost as function of sst and local param SEAICE_freeze
294         change cost names from siv4-[sst,vol] to siv4-[deconc,exconc]
295      - add stop statement if old names siv4-[sst,vol] are used
296      - add snapshots + cost reports for atmospheric longwave
297      - remove factor 0.1 in front of wtau[u,v]
298      - replace never used flag ALLOW_TMI_COST_CONTRIBUTION with
299         ALLOW_TMI_SST_COST_CONTRIBUTION
300    o pkg/atm_phys:
301      - add some diagnostics for Short-wave and for convection S/R.
302    o pkg/seaice/seaice_growth:
303      - fix a bug in the lateral melt parameterization for SEAICE_ITD
304        in seaice_growth; tempFrz needs to be computed inside the i/j-loop
305      - rearrange loop order for better vector code in the same code block
306      - rewrite the floeDiameter formula to have fewer divisions
307      -  (miraculously) none of this changes the results of seaice_itd
308    o pkg/smooth:
309      - move param smooth2Ddiffnbt to pkg/ecco
310    o pkg/salt_plume:
311      - salt_plume_frac.F:
312         clean up local param names
313         reformulate (1-frac) to frac; original 1-frac was based on swfrac code
314    o pkg/rw:
315      - add RS version of S/R READ_MFLDS_LEV.
316    o pkg/streamice:
317      - fix the restart test by writing/reading pickup_streamice files.
318    o pkg/seaice:
319      - refine checks for jfnk-related parameters
320      - comment out if statement with SEAICEuseIMEX parameter as long as there
321        is no IMEX code to avoid confusion and surprises
322    
323    checkpoint64u (2014/03/07)
324    o verification/MLAdjust:
325      - rename secondary test suffix:
326         1.leith  -> A4FlxF  + switch to flux-form & add side-drag
327         0.leithD -> AhFlxF  + switch to flux-form
328         0.smag   -> AhVrDv  (use Vorticity-Div. visc form) + add side-drag
329         0.leith  -> AhStTn  (use Strain-Tension visc form) + add side-drag
330    o pkg/mom_vecinv:
331      - remove unused arguments from S/R MOM_VI_HDISSIP & MOM_HDISSIP (as it used
332        to be before mom_calc_visc.F)
333      - skip the call to MOM_CALC_TENSION & MOM_CALC_STRAIN if not needed.
334      - add 2nd copy of vort3 & strain that knows about lateral BC (free/no slip):
335        this is simpler for the adjoint and for diagnostics.
336    o model/src + pkg/momentum:
337      - add input files for  2-D additional Western and Southern cell-edge wall
338         (e.g., to add "thin-wall" where it is =1).
339      - fix sideDrag option for thin-walls with Non-Lin Free-Surf
340        using 2nd hFacZ that is computed from initial (fix domain) hFac
341      - known limitations of thin wall implementation: not yet coded for sigma
342        coords; not working with CD-scheme neither.
343    o pkg/seaice:
344      - rename recently introduced parameters from (wrong name) AB to
345        BDF (backward difference time discretisation)
346      - retire runtime parameters SEAICEuseAB2, SEAICE_abEps
347    o tools/adjoint_options:
348      - remove setting of "OPENAD=true" (now set by command line "genmake2 -oad")
349    
350    checkpoint64t (2014/02/01)
351    o pkg/ecco
352      - add compile flag ALLOW_GENCOST_TIMEVARY_WEIGHT in ECCO_OPTIONS.h and
353        runtime logical flag gencost_timevaryweight to read daily sea-ice sigma
354      - replace hard-coded record number and period which only work for monthly
355        with read-in runtime param that works for other periods (month,day,year)
356    o pkg/thsice
357      - corrected store directive fixes thsice adjoint gradient checks
358    o genmake2 & testreport:
359      - add genmake2 option "-oad" to generate a Makefile for OpenAD built and
360        in this case, use tools/adjoint_options/adjoint_oad as default AD optfile.
361        Update testreport accordingly. No need to set "export OPENAD=true"
362        in adjoint_options/adjoint_oad anymore (will be removed later).
363    o pkg/shelfice:
364      - put T & S shelfice forcing into model surfaceForcing_T,_S (for now,
365        only if SHELFICEboundaryLayer=F); Change model/src/external_forcing.F
366        so that surface forcing applies to k=kSurf if using pkg/shelfice.
367    o pkg/ctrl, pkg/grdchk, pkg/ecco:
368      - Changes to make GENARR more modular (i.e. invisible if not used)
369    o model/src/temp_integrate.F and salt_integrate.F
370      - re-include store directives that were removed on Dec 27th.
371    o model/src/external_forcing_surf.F
372      - add storage directives for EmPmR and PmEpR to avoid recomputation of
373        seaice_model in the adjoint that is problematic when seaice_model is
374        turned off in the adjoint. The resolved issue dated back to July when
375        EXTERNAL_FORCING_SURF call was moved.
376        Update global_ocean.cs32x15/*/output_adm.seaice_dynmix.txt accordingly.
377    o pkg/exf/exf_check.F
378      - fix a small bug again (originally found by Wentao Liu, now found again)
379      - streamline error output
380    o pkg/streamice and aim_v23:
381      - replace a few "_EXCH_XY_RL (" with "_EXCH_XY_RL(", so that
382        Apple's /usr/bin/cpp knows what to do:
383        Apple LLVM version 5.0 (clang-500.2.79) (based on LLVM 3.3svn)
384        Target: x86_64-apple-darwin13.0.0
385    
386    checkpoint64s (2014/01/05)
387    o tools/adjoint_options:
388      - switch to fastopt.net TAF server (instead of default fastopt.de) for
389        AD optfiles adjoint_diva & adjoint_f95 (similar to adjoint_default).
390    o model/src:
391      - remove some unnecessary TAF storage directives in forward_step.F and
392        in dynamics.F (note: not always removed by TAF, e.g., double storage
393        of kappaRU,kappaRV in former version of dynamics.F).
394    o model/src & pkg/ptracers:
395      - call directly GAD_IMPLICIT_R & IMPLDIFF + DWNSLP_APPLY from temp_integrate.F
396        salt_integrate.F and ptracers_integrate.F (instead of from thermodynamics.F)
397        and remove ptracers_dwnslp_apply.F & ptracers_implicit.F
398      - call MATRIX_STORE_TENDENCY_EXP for each tracer (in ptracers_integrate.F)
399      - add fZon & fMer as output argument of S/R GAD_CALC_RHS.
400      - update TAF AD-output of experiments global_ocean.90x40x15 (13 for AD-grad).
401    o useSingleCpuInput separates single-CPU input from single-CPU output;
402        for now only implemented for in exf_interp_read.F
403    o verification/advect_xy:
404      - fix missing EXCH call in local version of ini_salt.F and update output.
405    o momentum diagnostics:
406      - fix which deltaT is used in Total-Tendency diagnostics.
407      - fix typo in diagnostics for momentum tendency from AB.
408    o pkg/seaice/seaice_lsr.F: fix an initialisation bug for the
409        SEAICE_VECTORIZE_LSR_ZEBRA option that lead to NaNs on a NEC-SX8
410    
411    checkpoint64r (2013/12/08)
412    o verification/*/results:
413      - Update reference output of experiments that were passing with just 13 digits
414         (make it easier to detect future changes in results)
415    o model/src & pkg/ptracers:
416      - move calls to GAD_ADVECTION (Multi-Dim advection) from thermodynamics.F to
417        inside temp_integrate.F and salt_integrate.F and from ptracers_advection.F
418        to inside ptracers_integrate.F ; remove ptracers_advection.F
419    o coupling interface pkgs:
420        [atm_compon_interf, ocn_compon_interf & atm_ocn_coupler]
421      - change the config check to test the agreement of Ocean Depth
422        with ATM land/sea mask (instead of ATM orography);
423      - send to coupler the number of coupler time-steps to do for this run:
424        this allows to check for consistency and don't need anymore to be
425        specified in parameter file "data";
426      in coupler:
427      - check consistency of RunOff map versus Ocean Depth and ATM land/sea mask.
428      - improve report to log-file of config setting (pass log-file unit to few S/R)
429    o pkg/compon_communic:
430      - add coupling send/receive for non-tiled integer vector;
431      - add S/R to check and stop if any proc has an error (similar to
432        eesupp/src/stop_if_error.F but single thread and across Comm_World).
433    o pkg/exch2:
434      - in exch2*_get_rx[1,2]: use new list "W2_tileIndex" to replace search
435        through list of all tiles my proc owns.
436    o model/src:
437      - AUTODIFF only: in calc_adv_flow.F, recompute rTransKp (instead of copying
438        from rTrans) to simplify dependencies (no need to store rTrans anymore in
439        calling S/R); this affects AD results at machine truncation level:
440        update AD-output (TAF) of experiments: 1D_ocean_ice_column,
441        bottom_ctrl_5x5 & obcs_ctrl (12 digits for AD grad, same FWD grad).
442    o tools/build_options:
443      - simplify Warnings options (-ieee & -devel cases) in linux_amd64_gfortran
444    o coupling interface pkgs:
445        [compon_communic, atm_compon_interf & ocn_compon_interf]
446      - move declaration of local array "ibuf" out of header file "CPLR_SIG.h"
447        to each S/R that needs it; remove un-used variables.
448      - change component tile registration (cpl_register.F in both compon_interf
449        and mitcomponent_tile_register.F) to pass the full list of tiles
450        information (including bi,bj) in 1 vector (instead of in a bi,bj matrix).
451      - with pkg/exch2: adopt the same convention used for I/O to define mapping
452        towards coupler global array (unless W2_useE2ioLayOut=F):
453         a) can now use different tiling between atm & ocn comp.
454         b) no needs to modify the run-Off map when changing tiling (was needed
455            even if using the same tiling between atm & ocn).
456         c) will allow to run with blank-tiles in 1 component (e.g., for ocean
457            full land tiles); not yet tested.
458      - check for valid mapping from comp. tile to coupler global array
459      - improve report of tile registration results to log file.
460    o pkg/exch2:
461      - in eesupp/src/eeboot.F: move call to W2_EEBOOT before Coupler
462        tile-registration (CPL_REGISTER);
463      - activate (un-comment) definition and setting of "W2_tileIndex" list to
464        store the local bi,bj indices of each tile;
465      - also print bi,bj in local report to log file;
466      - fix pkg/debug/debug_cs_corner_uv.F for the case nSy > 1 (left from
467        Jun 2009 modif of pkg/exch2).
468    o testing on baudelaire:
469      - run 2 tests at a time: no significant slow down (since enough cpu) and
470        get the full set of test done earlier
471      - switch the ifort test to "-devel" ; run the OpenAD test everyday.
472    o model/src/thermodynamics.F and routines called from it:
473      - pkg/gmredi: gmredi_residual_flow.F (replacing gmredi_calc_uvflow.F &
474        gmredi_calc_wflow.F) to update eulerian velocity (input) into residual
475        velocity (outp) by adding bolus velocity.
476      - model/src: calc_adv_flow.F (replacing calc_common_factors.F) to compute
477        mass transport from velocity + lateral grid cell area
478      - rename calc_gt.F to temp_integrate.F (includes call to TIMESTEP_TRACER)
479      - rename calc_gs.F to salt_integrate.F (includes call to TIMESTEP_TRACER)
480     in thermodynamics.F
481      - remove k from thermodynamics.F and move it to temp_integrate.F
482        salt_integrate.F and ptracers_integrate.F (now done inside the tracer
483        loop).
484      - compute locally (in thermodynamics.F) 3-D velocity field that is used to
485        advect tracers; pass it as argument to GAD_ADVECTION, GAD_SOM_ADVECT,
486        PTRACERS_ADVECTION, TEMP_INTEGRATE, SALT_INTEGRATE, PTRACERS_INTEGRATE,
487        GAD_IMPLICIT_R and PTRACERS_IMPLICIT
488      - update AD-output (TAF & OAD) of experiments: 1D_ocean_ice_column,
489        global_ocean.90x40x15, tutorial_global_oce_biogeo and
490        tutorial_tracer_adjsens (+ TLM output).
491    o tools/OAD_support and (verification/*/) code_oad:
492      - OAD_support/cb2mGetModules.csh: add PACKAGES_CONFIG.h in header file to
493        module conversion ; remove unneeded CPP_EEOPTIONS.h.
494      - code_oad/CPP_OPTIONS.h: remove PACKAGES_CONFIG.h and use a more standard
495        version (closer to model/inc/CPP_OPTIONS.h).
496    o model/src:
497      - remove parameter "useOldFreezing" from PARAMS.h and push it to the
498        retired list of parameters (routine FREEZE has been replace by surface
499        freezing (10.yrs ago) and by pkg/frazil (interior freezing).
500    o pkg/gmredi:
501      - add option (GM_CALC_TRANSP_FROM_VEL) to compute transport directly from
502        velocity (same scheme but affects machine truncation) for GM_AdvForm.
503      - update output of FWD experiments: front_relax.bvp,
504        global_ocean.90x40x15.dwnslp, global_ocean.cs32x15 and ideal_2D_oce.
505    
506    checkpoint64q (2013/11/17)
507    o verification:
508      - generate new output on baudelaire (gfortran, -ieee) for OpenAD experiments
509        tutorial_global_oce_biogeo and global_ocean.90x40x15.
510      - generate new output (growth & melt) for seaice_itd experiment after
511        updating the input pickup_seaice files (previously wrong).
512    o pkg/cost:
513      - define a "final cost function" for each tile, and use GLOBAL_SUM_TILE_RL
514        (instead of _GLOBAL_SUM_RL) to get the final cost from all procs & threads:
515        o this fixes global-sum value if multi-threads (since GLOBAL_SUM_RL
516          cannot be applied to var in common block).
517        o allows to get results independent of tile-per-proc setting (if using
518          slower GLOBAL_SUM_SEND_RECV option).
519      - update accordingly: seaice_cost_final.F, shelfice_cost_final.F,
520        thsice_cost_final.F and ecco_cost_final.F (this one affects lab_sea
521        forward gradients: update output).
522      - update */code_oad/externalDummies.F by adding dummy GLOBAL_SUM_TILE_RL
523        S/R and, for most exp., also comment out GLOBAL_SUM_R8.
524    o pkg/mom_common:
525      - move to pkg/mom_common and model/src (previously in tutorial_deep_convection
526        code) 2nd version of isotropic 3-D Smagorinsky code interface: strain and
527        viscosity are locally declared in dynmics.F and pass as argument to CALC_GW;
528        ensure that all field value that are used are set.
529    o tutorial_deep_convection (smag3d):
530      - add missing scaling in mom_calc_smag_3d.F;
531      - set smag3D_coeff in input.smag3d such that results do not change.
532    o pkg/dic:
533      - change dic_cost.F to compute cost on each tile first and then apply
534        GLOBAL_SUM_TILE_RL: this affects forward gradient of AD experiments
535        tutorial_dic_adjoffline & tutorial_global_oce_biogeo; update output.
536      - remove kLev argument and use GLOBAL_SUM_TILE_RL in tracer_meanarea.
537    o eesupp/src & pkg/mdsio:
538      - remove gather/scatter_vector.F (from eesupp) and mdsio_read/writevector.F
539        (from pkg/mdsio) since they are no longer used for tape IO.
540      - move simple C subroutine "setdir.c" from pkg/compon_communic to eesupp/src
541        (+ keep a copy in pkg/atm_ocn_coupler).
542    o verification/isomip:
543      - split domain in 8 squared tiles (instead of just 2) for FWD, AD & OAD tests.
544    o tools/build_options:
545      - optfile linux_amd64_ifort11, fast (no ieee) case:
546        to get a working restart for all experiments, add "-fp-model source"
547        to FOPTIM (also remove "-opt-streaming-stores auto" <- this is the default).
548    
549    checkpoint64p (2013/10/20)
550    o pkg/autodiff:
551      - adread_adwrite.F: when type and length do not match ALLOW_AUTODIFF_WHTAPEIO
552        criteria, return to simple (default) tape IO format.
553    o pkg/mdsio (+ eesupp/src):
554      - rewrite/simplify tape-IO S/R (new S/R MDS_READ/WRITE_TAPE replace
555        previous MDSREAD/WRITEVECTOR) with 2 array argument from each type (R4/R8);
556      - fix globalFile and singleCpuIO options using simpler global mapping.
557      - new pairs of scatter/gather vector S/R (one for each type, generated from
558        template) corresponding to simpler global mapping.
559      - adread_write.F: switch to new S/R (but leave old calls commented) and write
560        to globalFile when parameter globalFiles is set to True.
561      - switch on useSingleCpuIO in AD experiments: global_ocean.90x40x15 & isomip.
562    o pkg/autodiff:
563      - adread_adwrite.F: add a hack for RS arrays (when RS=real*4);
564        with ALLOW_AUTODIFF_WHTAPEIO defined, since corresponding (real*4) is
565        missing, just add a STOP if array type do not match.
566    o pkg/exf:
567      - to allow to use seaice-fraction from pkg/exf in other pkgs than pkg/seaice:
568         rename CPP option EXF_ALLOW_SEAICE_RELAX to EXF_SEAICE_FRACTION
569         and rename array obsSIce to exf_iceFraction.
570    o tutorial_deep_convection:
571      - add 1rst version of isotropic 3-D Smagorinsky code (from Louis-Philippe),
572        for now all in this exp. code dir.
573      - add secondary test using Smag-3D viscosity (keep very low backgroud visc for
574        testing) and flux-limter advection scheme for Temp. (no explicit diffusion).
575    o eesupp/src:
576      - added SINGLE_DISK_IO option because reading of parameter files on
577        very large number of processors did not work with existing set-up
578    
579    checkpoint64o (2013/09/25)
580    o pkg/atm_phys & atm_compon_interf:
581      - allows for coupling of gray-atmosphere (atm_phys) with ocean.
582    o tools/build_options:
583      - switch from "-fPIC" to "-mcmodel=medium" in optfiles: linux_amd64_gfortran
584        & linux_amd64_ifort11 and in linux_amd64_g77 & linux_amd64_open64 also
585        remove CPP setting (was identical to genmake2 default).
586    o pkg/gmredi & model/src: Some updating and work done on the residual model.
587      - created new file model/src/calc_eddy_stress.F to calculate the eddy stress.
588      - fixed up the calculation of the eddy stress and how it is added to the
589        external forcing via taueddy_external_forcing.F
590      - at the moment, it is very experimental and only works with the variable eddy
591        diffusivity calculated in gmredi_k3d.F
592    o pkg/seaice/seaice_check.F: add a check to catch the case of specifying
593        lw/swfluxfile instead of lw/swdownfile in data.exf together with pkg/seaice
594    o testreport (& tools/do_tst_2+2):
595      - for MPI test, set default COMMAND to 'mpirun -v -np TR_NPROC ./{executable}'
596    o tools/build_options: linux_amd64_gfortran & linux_amd64_ifort11:
597      - remove CPP='cpp -traditional -P' (this is genmake2 default)
598      - add switch (for big setups) to use 'medium' memory-model (but leave it
599        commented out for now). Note: needed with FC 19 to compile big setups.
600    o pkg/atm_compon_interf:
601      - regroup per field origin (model & pkgs) the coupling storage routines
602         (which accumalate in time each coupling field)
603      - move bi,bj loops inside atm_store_my_data.F and store also wind-stress;
604        update accordingly + simplify aim_do_physics.F
605    
606    checkpoint64n (2013/08/26)
607    o pkg/bbl:
608      - update formulation to reduce dispersion of tracer properties in bbl
609      - replaced horizontal and vertical transport parameters with velocities
610      - changes results for verification/global_with_exf.yearly
611    o verification/halfpipe_streamice:
612      - change to matrix construction; update both Fwd & AD output.
613    o verification/tutorial_tracer_adjsens:
614      - OpenAD test: switch to vector-invariant momentum since fluxform with
615        rStar causes problems with OpenAD; update output.
616    o tools:
617      - genmake2: define a common prefix for all temp-file names ; move them
618        to local /tmp disk (but would be easy to move them back);
619      - xmakedepend: apply the same switch for temp-files.
620    o pkg/offline:
621      - changes for use with rStar (NLFS): assume that we continue to provide
622        UVELMASS/hFacW_ini & VVELMASS/hFacS_ini (hFacWi,S_ini as written in grid
623        output files) and apply r* scaling at each time-step (function of the time
624        varying Eta field); use normal pickup files (needed for restart with NLFS).
625    o adjoint with OpenAD:
626      - move OpenAD-specific files from verification/OpenAD/code_oad_all to a new
627        package openad.  This package has to be compiled for all runs with OpenAD
628        instead of specifying code_oad_all as a modification directory.
629      - link the fortran templates from tools/OAD_support to the build directory
630        for preprocessing to avoid conflicts between different setups compiled
631        simultaneously and simplify cleanup.
632    o pkg/exf:
633      - in exf_getforcing.F: comment out most of the EXCH calls (fields used by
634        main model or other pkgs are exchanged in EXF_MAPFIELDS).
635    o model/src:
636      - do_stagger_fields_exchanges.F: skip EXCH calls when using pkg/offline
637        (similar to do_fields_blocking_exchanges.F).
638    o tools/genmake2:
639      - remove TAF output src code just before calling staf (when not doing a fresh
640        built, will stop if things go wrong with staf).
641      - fix target "adobj" (left from TAF version-2 transition)
642    o pkg/diagnostics:
643      - add a parameter to track the status of pkg/diagnostics activation;
644        this replace/extend the use of logical param "settingDiags" (to check
645        when adding diag to the list) to also check any DIAGNOSTICS_[]FILL* call.
646        New S/R to print error message and stop when pkgStatus is not right.
647      - to try: add a warning when "data.diagnostics" exist but useDiagnostics=F.
648    
649    checkpoint64m (2013/08/13)
650    o model/inc:
651      - move FCORI_MACROS.h from PARAMS(_MACROS).h to GRID_MACROS.h (left from
652        8 yrs ago modif when Coriolis arrays were moved from PARAMS.h to GRID.h)
653    o pkg/kpp & aim_v23:
654      - only call DIAGNOSTICS_FILL when useDiagnostics=TRUE.
655    o pkg/seaice:
656      - restore (last time on 2011/12/24) ability to compile pkg/seaice with
657        undefined pkg/exf ALLOW_ATM_TEMP or ALLOW_RUNOFF CPP-options.
658      - only call DIAGNOSTICS_FILL when useDiagnostics=TRUE.
659    o eesupp/src:
660      - fix check for overlap-size argument (myOLn.GT.MAX_OLY_EXCH)
661        in exch1_rx[_ad].template (thanks to Francois Lefeuvre report).
662    o switch to TAF version-2:
663      - add flow directives to "freeze" naming convention for ad-routines that
664        are used in I/O routines of adjoint state and associated common blocks
665        that are used in adcommon.h (backward compatible with version-1)
666      - update all ad-optfiles (in tools/adjoint_options + few local to some
667        verification exp) to switch to latest TAF version (currently 2.5.5);
668        merge "*_mpi" adoptfiles into the corresponding non-mpi (but commented
669        out except for diva).
670      - the major change with TAF version-2 is that both the differentiated
671        routines and the forward routines (new) are returned as part of the TAF
672        output source code. Update genmake2 accordingly.
673      - new output for AD experiment tutorial_global_oce_biogeo (better AD gradient
674        with version-2 when compared to TLM or FWD gradient); other experiments
675        output show minor changes (machine truncation level); update the few AD &
676        TLM output with 12 matching digits only (some prior to version-2 switch).
677    
678    checkpoint64l (2013/08/05)
679    o model/src:
680      - in dynamics.F, skip the call to CALC_VISCOSITY if momViscosity=F
681      - main_do_loop.F: no longer includes additional (AUTODIFF) header files
682        when using TAF but only if using OpenAD.
683    o pkg/mom_common+fluxform+vecinv:
684      - always set horiz. viscosity arrays to background value before calling
685        MOM_CALC_VISC (in MOM_FLUXFORM & MOM_VECINV) and call S/R MOM_CALC_VISC
686        only when using variable horiz. viscosity (useVariableVisc=T);
687      - simplify mom_vecinv.F (only 1 block for momViscosity).
688    o pkg/mom_common: variable horiz. viscosity in NH code
689      - move horiz-viscosity 3-D arrays viscAh_W & viscA4_W (used in calc_gw.F)
690        from model/inc/NH_VARS.h to pkg/mom_common/MOM_VISC.h
691      - store in common block (in MOM_VISC.h) logical parameters: useHarmonicVisc,
692        useBiharmonicVisc & useVariableVisc.
693      - fix old bug (already in 1rst implementation of variable horizontal viscosity
694        in calc_gw.F, version 1.27, 2006/06/20):
695        horizontal bi-harmonic viscosity in gW was missing when wiscA4W=0
696        even if variable bi-harmonic viscosity (e.g., viscA4Grid) was non-zero.
697      - change background horiz viscosity in vertical momentum (gW) to always be
698        viscAhW,viscA4W (instead of switching to viscAhD, viscA4D when using
699        any type of variable viscosity, e.g., viscAh/4Grid)
700      - change default value of viscAhW,viscA4W to viscAhD,viscA4D (instead of
701        viscAh,viscA4) which default to viscAh,viscA4 :  this avoid missing
702        horiz. viscosity in W eq when just setting viscAhD/Z,viscA4D/Z (since
703        default viscAh,viscA4 is zero).
704    o model/src:
705      - extend length of drC & recip_drC from Nr to Nr+1.
706    o Divided Adjoint (DIVA) with MPI:
707      - genmake2: do not create local ./mpi_headers dir when no file to copy into.
708      - remove option ALLOW_DIVIDED_ADJOINT_MPI (replaced by ALLOW_DIVIDED_ADJOINT
709        and ALLOW_USE_MPI) from model/src code and from ECCO_CPPOPTIONS.h.
710    
711    checkpoint64k (2013/07/23)
712    o tools/OAD_support:
713      - avoid the need for file "oadtempflile" in insertTemplateDir.bash
714        and remove it from genmake2.
715    o tools/build_options:
716      - remove MPI_HEADER_FILES_INC setting (no longer used) and comment out
717        MPI_HEADER_FILES list (let genmake2 find the missing headers)
718    o verification/halfpipe_streamice:
719      - change to driving stress formulation; update both Fwd & AD output.
720    o tools/genmake2 and Divided Adjoint with MPI:
721      - remove default setting of MPIINCLUDEDIR from $MPIHOME (always been broken);
722      - only create local ./mpi_headers dir if using MPI and MPIINCLUDEDIR is set;
723      - add new variable (LOCAL_MPI_HEADERS, replace MPI_HEADER_FILES_INC) in
724        Makefile, which is set by genmake2, and check which mpi-headers are needed.
725        Note: need to update adjoint_options/adjoint_diva_mpi accordingly.
726      - update target "CLEAN" (to also remove ./mpi_headers/ dir).
727    o testreport:
728      - changes for Divided Adjoint Run: when file "run_ADM_DIVA" is present,
729        perform additional runs (number of additional runs is "add_DIVA_runs" taken
730        from file run_ADM_DIVA ; should match "nchklev_3" in file "code_ad/tamc.h").
731    o verification/lab_sea (AD test):
732      - change to test Divided Adjoint Run in this set-up (both standard AD test
733        and 2 secondary AD test: noseaice + noseaicedyn); drop the evp AD test.
734    o pkg atm_ & ocn_compon_interf:
735      - remove cpl_earlyExpImpCall=F option (was mainly a hack added for the old
736        staggerTimeStep implementation) and disable (retired) corresponding
737        parameter.
738    o pkg/offline:
739      - comment out unused field-array: ICEM, ConvectCount, hflx[01], icem[01];
740      - add S/R OFFLINE_CHECK to print offline parameter summary
741        and stop if loading a file that is not used;
742      - enable to calculate GMRedi tensor, KPP mixing and convective index
743        when the corresponding file(s) is/are not specified (but pkg is used).
744      - comment out resetting of monitorFreq (to endTime) since it still useful
745        for monitoring CFL numbers and checking offline fields.
746    o OpenAD:
747      - do not define OAD_DEBUG (in tools/adjoint_options/adjoint_oad) to get
748        smaller standard output) and generate new (smaller) output (on baudelaire
749        using gfortran with -ieee) for exp. tutorial_tracer_adjsens
750    o model/src:
751      - call EXTERNAL_FORCING_SURF outside bi,bj loops (in do_oceanic_phys.F),
752        (where external_forcing_adjust was called) and change list of arguments;
753      - merge external_forcing_adjust.F into external_forcing_surf.F
754      - put surface relaxation of SST & SSS in new S/R (forcing_surf_relax.F)
755        which also contains balancing surface relaxation (ALLOW_BALANCE_RELAX,
756        previously in file "balance_relax.F", now removed); remove corresponding
757        arrays in FFIELDS.h.
758      - EXTERNAL_FORCING_SURF is now called when using pkg/offline; implement
759        a hack for getting back surfaceForcingS (loaded from file) when using
760        ALLOW_OLD_VIRTUALFLUX (pkg/dic, in DIC_OPTIONS.h) in offline set-up.
761      - update output of AD test experiment global_ocean.cs32x15.seaice_dynmix
762        (was getting only 11 digits for AD-grad, due to different truncation
763         error in AD code).
764    
765    checkpoint64j (2013/07/04)
766    o pkg/offline:
767      - to enable the use of other features with pkg offline (e.g., obcs),
768        also call S/R DO_OCEANIC_PHYS in offline run - more modifs to come.
769      - comment out "allowFreezing" (now active) in 2 offline testing exp.
770    o pkg/exf ALLOW_RUNOFTEMP
771      - fix sign and make compatible with temp_EvPrRn .NE. UNSET_RL
772      - ahdded RUNOFTEMP test to verification/global_ocean.cs32x15/input.seaice
773      - changes verification/global_ocean.cs32x15/results/output.seaice.txt
774    o pkg/atm_phys:
775      - allows to add some damping on uVel,vVel (strength only function of k).
776    o verification, ad-tests:
777      - reduce length of the simulation for AD test: global_ocean.cs32x15.seaice,
778        global_ocean_ebm and offline_exf_seaice.thsice.
779    o verification/halfpipe_streamice:
780      - found a bug in s/r pkg/streamice/streamice_advect_thickness which caused
781        flux input boundary conditions to be ignored; a fix for this bug changed
782        verification results for forward test.
783      - add adjoint test.
784    o pkg/ptracers:
785      - allow to restart without SOM pickup (resetting SOM to zero).
786    o pkg/gmredi:
787      - New parameterisation for the calculation of K and (GM_PsiX,GM_PsiY) added.
788      - It uses mixing length theory and suppression by steering level effects to
789        calculate a diffusivity used in the Redi tensor (see Bates et al., submitted
790        to JPO, for more details).
791      - It also uses the diffusivity to calculate an eddy induced streamfunction
792        based on a PV closure (rather than a buoyancy closure as in GM).
793      - New files added to pkg/gmredi:
794        gmredi_k3d.F calculates the diffusivity for the Redi tensor and the eddy
795          induced overturning streamfunction (called from gmredi_calc_tensor)
796        gmredi_calc_eigs.F calculates the eigenvalues and eigenvectors required
797          for use in gmredi_k3d
798        gmredi_calc_urms.F calculates the the rms eddy velocity used to calculate
799          the eddy diffusivity
800    
801    checkpoint64i (2013/06/18)
802    o pkg/cheapaml:
803      - take src files from MITgcm_contrib/verification_other/offline_cheapaml/code
804        that enable the use of seaice (pkg/thsice thermo & pkg/seaice dynamics)
805        with pkg/cheapaml.
806    o utils/python: add subpackage for cubed sphere function, first example is
807        simple cs.pcol to plot 2D fields on a map
808    o pkg/streamice:
809      - This is a new package in MITgcm, which solves dynamic equations for ice
810         sheets and ice streams
811      - At the moment it is independent of atmosphere/ocean dynamics, or any
812        other physical packages in MITgcm, even ShelfIce (although it is anticipat-
813        ed that this will change)
814      - There is a new verification exercise that tests it, halfpipe_streamice,
815        evolves a 40x80 km ice stream/ice shelf (at coarse resolution) in a
816        rectangular embayment
817      - halfpipe_streamice is forward-only for now, will have TAF test soon
818      - for questions, email dgoldber@mit.edu
819    o pkg/thsice:
820      - fix filling of snow-precip diagnostic (SIsnwPrc) (left from the removing
821        of snowPrc from common bloc, on May 2nd, thsice_step_fwd.F revision 1.40);
822      - remove diagnostics 'SI_FrcFx' ( now identical to 'SI_Fract' with new
823         call sequence: ice-Thermo(thsice),ice-Dyn,ice-Advect );
824      - allow precip from pkg/cheapaml to make snow over seaice.
825    o pkg/cfc:
826      - move in separated header file (CFC_ATMOS.h) time-serie arrays of Atmos CFC
827      - remove atmos CFC 2-D arrays from common bloc (now local variables)
828      - change some hard-coded constant to run time parameter for reading and
829        and interpolating atmospheric CFC ; keep same default as previously.
830      - more flexible reading of Atmos CFC (number of records no longer hard-coded)
831      - put arguments in standard order: myTime, myIter, myThid
832      - use standard S/R GET_PERIODIC_INTERVAL for time interpolation of
833        atmospheric CFC ; fix for the case myIter < PTRACERS_iter0.
834      - fix calculation of surf tendencys for partial-cell and/or Non-Lin Free-Surf
835      - new routine to print summary of CFC params and check for consistency.
836    o pkg/seaice: add uice/vice to the parameter list of s/r seaice_advdiff,
837      similar to thsice_advdiff.
838      Note that for the B-grid case the routine parameters uc/vc are overwritten.
839    o pkg/cfc:
840      - change time interpolation for atmospheric CFC-11 (now same as for CFC-12);
841        update output (CFC-11) of experiment cfc_example and tutorial_cfc_offline.
842      - fix interpolation of atmphspheric CFC between Sorthern and Northern
843        hemisphere value.
844    o pkg/seaice:
845      - allow to use seaice dynamics without pkg/exf (e.g., using pkg/cheapaml)
846    o pkg/seaice: add Adams-Bashforth2 time discretization for ice dynamics;
847                  so far only for JFNK-solver, turn on with SEAICEuseAB2 = .TRUE.
848      - requires an additional time level that is stored in the pickup
849      - you can start with AB2 from a pickup without this time level with
850        pickupStrictlyMatch = .false.
851    
852    checkpoint64h (2013/05/26)
853    o pkg/cheapaml:
854      - replace one ()**.5 with SQRT + use temp var "cdu = tau/Du" (coare3_flux);
855        affect machine truncation (but exp cheapAML_box still pass with 13 digits).
856      - consistent treatment of uWind,vWind location: assume everywhere in
857        pkg/cheapaml that they are on C-grid (@ uVel,vVel location)
858        (Note: was already the case for Tair,Qair advection);
859        add option (INCONSISTENT_WIND_LOCATION) to recover old results.
860      - compute diabatic forcing only in the interior (excluding overlap regions)
861      - fill in array "Qsw" (for short-wave heating);
862      - add diagnostic for precip ; fill-in diagnostics for cheapAML state vars
863        before any update (consistent with MITgcm state var diagnostics);
864      - cheapaml_fields_load.F & cheapaml_init_varia.F : only fill outer edges if
865        non periodic ; + adjusted for uWind,vWind (C-grid).
866    o pkg/seaice:
867      - remove dependence of pkg/seaice versus pkg/exf (file: pkg/pkg_depend) and
868        add explicitly pkg/exf in experiments that currently use pkg/seaice.
869      - allows to compile pkg/seaice without pkg/exf.
870    o tools/OAD_support:
871      - use a local copy (ourRWCPinBd) to ensure index ourRWCP stays within bounds
872        of array "ourStepOf" in function rvNextAction (revolve.F90).
873    o pkg/aim_compon_interf renamed to pkg/atm_compon_interf
874      - change pkg name (to be used with other atmospheric physics pkg)
875        but by-pass CVS when making the new pkg so that we keep the CVS history.
876    o pkg/offline:
877      - call OFFLINE_FIELDS_LOAD from pkg/offline/offline_init_varia.F
878        (previously called from pkg/dic_surfforcing_init.F)
879    o model/src:
880      - re-order sequence of calls within packages_init_variables.F, using
881        standard order, except for:
882         DIAGNOSTICS_INIT_VARIA and OFFLINE_INIT_VARIA (called @ the top),
883         CTRL_MAP_INI and OBCS_INIT_VARIABLES (called @ the bottom)
884    o new pkg: atm_phys
885      - add entry point and source code (previously in contrib
886          verification_other/atm_gray/code_gray/) for new pkg "atm_phys"
887        (atmospheric physics pkg from P. O'Gorman and T. Schneider, JCl, 2008).
888      - re-order sequence of calls within packages_readparms.F,
889         packages_init_fixed.F and packages_write_pickup.F
890        (but skip packages_init_variables.F because of TAF issues).
891      - update contrib/*/atm_gray/ experiment.
892    o pkg/seaice (ITD code):
893      - simplify and fix the writing of pickup-files for ITD case
894    o pkg/seaice (ITD code):
895      - introduce floe size dependent lateral melt for ITD case;
896      - cleaning (avoid division by zero, change to f77 syntax, remove tabs)
897      - update seaice_itd experiment main output.
898    o pkg/thsice:
899      - remove snowPrc from common block THSICE_FLUX, in THSICE_VARS.h and
900        declared it locally (without bi,bj) in thsice_main.F & aim_do_physics.F;
901        changed accordingly pkg/atm2d.
902    
903    checkpoint64g (2013/05/01)
904    o pkg/exf ALLOW_RUNOFTEMP
905      - if defined,  river and glacier runoff temperature can be read-in from
906        runoftempfile; runoftempfile needs to have same format as runofffile
907    o pkg/thsice (& pkg/bulk_force):
908      - In case Energy-Reference-Level (ERL) is used (temp_EvPrRn=0), account
909        for energy content of Precip + RunOff & Evap (like with pkg/exf).
910      - change computation domain to always be the interior (without overlap).
911      - fix bug (wrong overlap) when using EXF and stressReduction > 0.
912    o verification/tutorial_global_oce_biogeo:
913      - add preliminary OpenAD setup (still has problems)
914    o pkg/seaice:
915      - turn some parameters for choosing the convergence criterion of
916        the inexact Newton method (JFNK) into runtime parameters for convenience
917      - clean up seaice_calc_viscosities.F: remove/retire two options for
918        SEAICetaZmethod (1,2), introduce area weighting for method 3; this changes
919        the results of lab_sea/input because a division has been replaced by
920        a multiplication with the reciprocal (sumNorm)
921      - modify offline_exf_seaice/input.dyn_jfnk/data.seaice to improve
922        convergence of solver (changes results, of course), and to test some
923        new features
924    o model/src:
925      - remove unused (since Aug 2006) S/R SET_WRITE_GLOBAL_PICKUP and its call.
926      - remove unused forcing field "dQdT" and associated parameter "dQdTFile".
927      - move forcing adjustment (balancing surface forcing) in specific S/R
928        where might also be applied exchanges (if needed) to forcing arrays.
929    o pkg/shelfice:
930      - allow to specify the Ice-Shelf mass per unit area (instead of
931        shelficeLoadAnomaly) and do the conversion from one to the other
932      - move loading from file of shelficeLoadAnomaly from SHELFICE_INIT_VARIA
933        to SHELFICE_INIT_FIXED: (a) avoid some TAF recompution issues and
934        (b) will be loaded in time (before calling INI_PRESSURE) in case it is
935        needed in phi0surf for initial pressure calculation when useDynP_inEos_Zc
936      - update isomip experiment forward output (get machine truncation error
937        from conversion shelficeLoadAnomaly -> shelficeMass -> shelficeLoadAnomaly)
938    o verification/offline_exf_seaice:
939      revise data.seaice in input.thermo and input_ad and update results accordingly
940        HO = 0.2, SEAICE_areaLossFormula = 2,
941        SEAICE_growMeltByConv = .TRUE.,
942        SEAICE_doOpenWaterMelt = .TRUE.,
943      Improve consistency with input.thsice and fix the spurious 500m ice corners
944    o verification/global_ocean.cs32x15:
945      - set Energy Reference Level to liq. water @ 0 degC: temp_EvPrRn=0.,
946        in icedyn (thsice+seaice-dyn) test and update output.
947    o verification/offline_exf_seaice:
948      - adjust list of tested variables (with testreport) and update
949        standard test output with better slection of monitored fields.
950    o pkg/cd_code:
951      - swtich off Adams-Bashforth on the 1rst iteration. Update output of
952        experiment lab_sea.hb87
953    o tools/genmake2:
954      - change default makedepend from the system default to tools/xmakedepend:
955        When no makedepend is specified, select tools/xmakedepend it the test pass,
956        otherwise select the system default (if exist and pass the test) or
957        try to build cyrus-makedepend ; stop if none of the 3 works.
958    o pkg/exf & pkg/thsice:
959      - In case Energy-Reference-Level (ERL) is used (temp_EvPrRn=0), account
960        for energy content of Precip + RunOff & Evap. Assumes:
961       1) Rain has same temp as Air.
962       2) Snow has no heat capacity (consistent with seaice & thsice pkgs)
963       3) Run-Off comes at the temp of surface water (with same Cp)
964       4) Evap over ocean is released to the Atmos @ surf-temp (=SST); should be
965        put directly into Latent Heat flux & should use water-vapor heat capacity.
966       5) Evap over snow/seaice (pkg/thsice) assumes constant Lf+Lv (consistent
967        with snow having no Cp) => water vapor is released to Atmos @ 0^oC (=ERL).
968    o pkg/seaice: simplify the use of CPP flags in JFNK-related files
969        (compile when SEAICE_ALLOW_JFNK is defined)
970    o pkg/thsice:
971      - fix oceanic flux diagnostics & timeave (left from new sequence of calls
972        implementation): move THSICE_AVE call after the advection (called directly
973        from thsice_do_advect.F).
974    o verification/global_ocean.90x40x15 and OpenAD:
975      New experiment for OpenAD is identical to the one in input_ad except that
976        multiDimAdvection=.FALSE.,
977      There is still an issue with this.
978    o pkg/thsice:
979      - account for ice velocity (ocean relative velocity) in turbulent heat flux
980        at the base of the ice; update output of global_ocean.cs32x15 (icedyn)
981        and offline_exf_seaice (main test).
982    
983    checkpoint64f (2013/03/31)
984    o verification/OpenAD:
985      - new (smaller, without OAD_DEBUG) output_oadm.txt generated using gfortran.
986    o verification/isomip, pkg/shelfice and OpenAD:
987      - add OpenAD setup to this exp and make shelfice package work with OpenAD
988    o verification/tutorial_global_oce_biogeo:
989      - update AD and TLM output after turning off ALLOW_FE (in DIC_OPTIONS.h)
990    o verification/offline_exf_seaice:
991      - replace adjoint experiment (now similar to fwd input.thermo/ setup).
992    o verification/tutorial_tracer_adjsens, pkg/ptracers and OpenAD:
993      - add OpenAD setup to this exp and make ptracers package work with OpenAD
994    o pkg/seaice/seaice_evp.F:
995       mask the asymmetric contribution of the ice-ocean stress (when
996       the turningAngle is non-zero) over open water to avoid stripes
997       in the EVP-solutions after many EVP-substeps. This does not change
998       the verification experiment (because turningAngle=0 in that experiment),
999       but will affect other EVP solutions with turningAngle.ne.0
1000    o verification, AD & TLM output:
1001      - new TAF version 2.3.10 (previously 2.3.8) add more parenthesis in multiple
1002        additions and multiplications which affect results at machine truncation
1003        level. Update few AD output (1D_ocean_ice_column, bottom_ctrl_5x5,
1004        lab_sea.noseaicedyn & offline_exf_seaice) and TLM output
1005        (1D_ocean_ice_column & tutorial_tracer_adjsens.som81) which had only 12
1006        digits of matching.
1007    o pkg/seaice:
1008       modify lsr-algorithm so that it vectorizes AND converges by using a
1009       "zebra" method: split vector loop into two with step size 2; this
1010       solves a general convergence problem for the JFNK solver on a vector
1011       computer. It has the potential to even improve convergence for
1012       non-vector machines, but it does change the results so it is turned
1013       off by default. To turn on define CPP-flags SEAICE_VECTORIZE_LSR and
1014       SEAICE_VECTORIZE_LSR_ZEBRA in SEAICE_OPTIONS.h
1015    
1016    checkpoint64e (2013/03/05)
1017    o pkg/ecco and several verification experiments:
1018       Remove special versions of the_model_main.F, the_main_loop.F, forward_step.F
1019       from ecco package, and revert to unified routine in model/src/
1020       Adjust verification experiments accordingly, especially gloal_oce_llc90
1021       Should conclude long-standing work by Gael to reconsile the_main_loop with
1022       ECCO and will enable OpenAD's revolve loop in ECCO setup.
1023    o pkg/generic_advdiff:
1024      - implement compressible flow method for multi-dim advection (similar to
1025        gad_som_advect.F); add new option "GAD_MULTIDIM_COMPRESSIBLE" (since
1026        TAF generates many recomputations) to use it; no yet coded with implicit
1027        vertical advection.
1028      - change experiment advect_cs (new output) and advect_xy (same output)
1029        to test compressible flow multi-dim advection.
1030    o pkg/generic_advdiff:
1031      - fix SOM advection for unusual cases (linear Free-Surf in r*, other
1032        cases where linear Free-Surf is not @ k=1, e.g., useShelfIce)
1033    o pkg/seaice:
1034      - fix bug in the no-slip implementation in seaice_calc_strainrates.F, this
1035        bug affects two verification experiments (lab_sea and lab_sea.hb87),
1036        recover old (wrong) results by setting noSlipFac = 2. in
1037        seaice_calc_strainrates.F;
1038      - add another averaging method for etaZ (etaZmethod=3), a mix of 2 and 0
1039      - add runtime parameter SEAICE_JFNKepsilon for that finite difference
1040        gradient in the Jacobian times vector operation (s/r seaice_jacvec)
1041      - fix line search in seaice_jfnk.F (s/r seaice_jfnk_update)
1042    o pkg/seaice: reorganize seaice_lsr.F to be able to reuse more code:
1043      - new subroutines seaice_lsr_tridiagu/v
1044      - introduce loop bounds i/jmin/max to be able to use a restricted
1045        additive Schwarz method, but not used for now.
1046      - rename SEAICE_CALC_LSR_COEFFS into SEAICE_LSR_CALC_COEFFS
1047      - use new subroutines seaice_lsr_tridiagu/v in s/r seaice_preconditioner
1048    o OpenAD support
1049       Reorganize S/R call for overall time-stepping loop to facilitate
1050       OpenAD revolve loop replacement
1051       (new S/R main_do_loop.F)
1052    o model/src:
1053      - add 3-D array 3rd dimension to argument list of S/R ADAMS_BASHFORTH2/3;
1054      - pkg/cheapaml: remove local S/R ADAMS2d and use instead standard S/R
1055        ADAMS_BASHFORTH2.
1056    o pkg/cheapaml:
1057      - add new parameter (default=F, same as before) to disable full domain
1058        (including land) periodicity in X & Y dir.
1059      - new S/R CHEAPAML_COPY_EDGES to copy relaxation field into edges of
1060        prognostics field ; merge the 2 S/R cycle_2d_tracer and timestep_2d_tracer
1061        into single S/R CHEAPAML_TIMESTEP.
1062    
1063    checkpoint64d (2013/02/17)
1064    o pkg/monitor (angular momentum):
1065      - do not add Eta contribution to the total AM if using rigid-lid;
1066      - correct for Adams-Bashforth in zonal-wind part (instead of in AM_eta).
1067      - horizontal discretisation: compute Zonal wind contribution separately for
1068        each component (instead of from cell centered averaged) and use the 4
1069        grid-cell corner averaged value of Omega*(R*cos_Phi)^2 in AM_eta part.
1070      - Check that AM is conserved with linear dynamics (momAdvection=F and linear
1071        FreeSurf) if using vectorInvariant momentum.
1072    o model/src (horizontal grid):
1073      - move initialisation of all horizontal grid arrays to null value
1074        from specific horizontal grid S/R to main S/R INI_GRID;
1075      - add 2 new arrays to project model C-grid velocity on to zonal direction
1076        (similar to AngleCosC & -AngleSinC but at U and V point location) and
1077        compute them in S/R CALC_GRID_ANGLES.
1078    o pkg/seaice: replace a hard coded parameter by a runtime parameter
1079        SEAICE_JFNK_tolIter
1080    o pkg/seaice: introduce a restricted additive Schwarz (RAS) method in
1081        preconditioner for JFNK (run LSR into the overlaps as far as possible,
1082        i.e OLx/y-2, but overwrite the solution in the overlaps)
1083      - extend loop range in seaice_calc_viscosity
1084      - add new parameters SEAICE_OLx/y (default = OLx/y-2)
1085      - add flexible loop ranges to seaice_preconditioner, seaice_calc_lsr_coeffs
1086      - slightly modify loops in tridiagonal solver lsr-preconditioner
1087      - by default remove the extra exchange in seaice_preconditioner with a
1088        replacement of an undocumented CPP flag by SEAICE_PRECOND_EXTRA_EXCHANGE
1089      - modify offline_exf_seaice so that old results without RAS are reproduced
1090        for output.dyn_jfnk.txt
1091      in seaice_fgmres.F (unrelated to RAS)
1092      - add a cpp-flag option for a re-ordered mapping (potentially more
1093        efficient), but because this changes the results, turn it off by
1094        default
1095      - replace the save statement by local common blocks
1096    o utils/matlab:
1097      - fix tile-offset in rdmnc.m when output was produced using EXCH2.
1098      - update cs_grid/bk_line scripts to use load_grid.m (in utils/matlab)
1099        instead of local script "load_cs.m".
1100    o pkg/seaice:
1101      - fix a serious bug in seaice_fgmres.F, s/r seaice_scalprod, connected
1102        to the scalarProductMetric and the unrolling. By chance this does not
1103        change the verification experiment, because of the particular domain
1104        decomposition
1105    o pkg/diagnostics:
1106      - change default missing_value from UNSET_RL to -999.
1107    o pkg/layers: improve vectorization of layers_fluxcalc.F
1108      - step 1: split loops, make TatU/V 2D arrays. This alone reduces the cpu
1109        time spent in this routine by more than a factor of 3 on an NEC-SX8
1110      - step 2: replace search algorithm by a bisection algorithm found in
1111        Press et al. Numerical Recipes in Fortran. This algorithm can be
1112        vectorized and finds the correct bin in approx. log2(Nlayers) steps.
1113        For now, use this algorithm only for TARGET_NEC_SX defined.
1114      - moved the search algorithm into a separate subroutine, that is kept
1115        within the same file for automatic inlining.
1116      - modified catching potential errors
1117    o pkg/ecco:
1118      - add compile switches ALLOW_SHALLOW_ALTIMETRY and ALLOW_HIGHLAT_ALTIMETRY.
1119    o model/src, pkg/autodiff, pkg/ctrl, pkg/grdchk :
1120      - modifications for ALLOW_GENTIM2D_CONTROL
1121      -- forward_step.F, the_main_loop.F : pass options and arrays for adjoint tapes.
1122      -- load_fields_driver.F : add call to CTRL_MAP_GENTIM2D( myTime, myIter, myThid )
1123      -- add xx_gentim2d0/1 in ctrl_ad_check_lev1_dir.h checkpoint_lev1_directives.h etc
1124      -- use ctrl_swapffields.F (new) instead of exf_SwapFFields.F in ctrl_get_gen.F
1125    o model/src:
1126      - account for moist thermodynamics in (dry) potential temperature equation;
1127        update results of experiments: aim.5l_cs (x2), fizhi-cs (std + aqualev)
1128        and cpl_aim+ocn.
1129      - also switch to standard compiler (gfortran, was using ifort previously)
1130        for fizhi-cs experiments reference output.
1131    o pkg/ctrl:
1132      - 1st step toward generic time-varying control variable (2D) via CPP option
1133        ALLOW_GENTIM2D_CONTROL
1134      - note new namelist ctrl_nml_genarr in data.ctrl
1135    o verification/global_ocean.cs32x15:
1136      - switch off OLD_THSICE_CALL_SEQUENCE (both forward and AD code) to use new
1137        thsice calling sequence and update "output.icedyn.txt" output file.
1138    o pkg/ptracers:
1139      - from Ryan A.: code to allow to restart a tracer at regular time interval
1140        specifying a reset frequency and a reset-phase (for each tracers).
1141    o pkg/thsice:
1142      - implement new sequence of calls for thsice+seaice:
1143          previously:   ice-Dyn,ice-Advect,ice-Thermo(thsice)
1144          new sequence: ice-Thermo(thsice),ice-Dyn,ice-Advect
1145      - allows (with temporary CPP option "#define OLD_THSICE_CALL_SEQUENCE"
1146        in CPP_OPTIONS.h) to recover old sequence;
1147      - update diagnostics for Intermediate State thsice diagnostics: now filled
1148        just before advection (instead of just after advection in old sequence);
1149      - update output of experiment offline_exf_seaice (standard test);
1150      - in global_ocean.cs32x15 exp., postpone output.icedyn.txt update
1151        by setting #define OLD_THSICE_CALL_SEQUENCE in CPP_OPTIONS.h
1152    o pkg/aim_v23:
1153      - use tiled array for aim_CO2 and surface wind speed for export to coupler;
1154      - use standard pkg/mdsio routines to read & write CO2 pickup file;
1155      - in-line S/R AIM_AIM2DYN_EXCHANGES in aim_do_physics.F;
1156      - Implement new sequence of calls for seaice advection (with thsice and
1157        seaice diffusion): do ice advection after ice-Thermodynamic (previously
1158        was done before); change aim_do_physics.F (split the bi,bj loops block);
1159      - use same CPP option (OLD_THSICE_CALL_SEQUENCE) to recover old sequence;
1160    o pkg/thsice:
1161      - add a missing EXCH of sIceLoad in thsice_main.F (ocean set-up) for the case
1162        where just seaice diffusion is used without seaice-dynamics.
1163    
1164    checkpoint64c (2013/01/18)
1165    o pkg/seaice:
1166      - add a parameter JFNKres_tFac that can replace JFNKres_t
1167        (= JFNKres_tFac*JFNKresidual before JFNK solver)
1168      - add a line search option to the JFNK solver
1169      - move update of u/vIce and computation of initial residual into a separate
1170        routine (same file); makes the code a little easier to read (?)
1171      - the line search requires computation of the residual and for some reason
1172        I cannot do the update of u/vIce at the beginning of the Newton loop
1173        without changing the results, so we move computation of the new residual
1174        also to the end of the Newton loop, even without the line search
1175    o pkg/mdsio:
1176      - write missing value (corresponding to undefined array value) to meta files;
1177        skip this if missing value is one (UNSET_RL would be a better value for the
1178        case of undefined missing value but it's current the default missing-value);
1179        Also update mdsio_read_meta.F (reading timeInterval & missing-value).
1180    o pkg/exf & thsice:
1181      - for diagnostics purpose, fill-up and update Qsw array (+ fill the
1182        diagnostics) even when SHORTWAVE_HEATING is #undef;
1183    o verification/cfc_example:
1184      - turn on pkg/layers with pkg/diagnostics (to test pkg/layers and to
1185        illustrate how to use it).
1186    o verification/offline_exf_seaice:
1187      in input: add SEAICErestoreUnderIce=.TRUE., and reduce size of forcing
1188        files to only one time-record.
1189      in input.thermo: narrow the 2 bands of low initial ice-concentration near
1190        N & S edges; switch on SEAICErestoreUnderIce=T; use pkg/diagnostics for
1191        snapshot output; same mcPheePiston value as in thsice with
1192        surf-current=0.2m/s.
1193      in input.thsice: similar set-up as in input.thermo (channel with same seaice
1194        initial conditions).
1195    o verification/cfc_example:
1196      - update file "data" with more standard choice (default rotationPeriod,
1197        exactConserv=T, reduce ivdc_kappa to 10, remove multiDimAdvection=F,
1198        set deltaTFreeSurf to deltaTtracer) and update the output.
1199    o pkg/layers:
1200      - fix bolus part so that it compiles with #undef GM_BOLUS_ADVEC;
1201      - ensure that "layers_bolus" is switched to False when useGMRedi=False.
1202    o verification/offline_exf_seaice:
1203      - set all {field}period to zero for constant-in-time forcing (not tested
1204        anywhere else).
1205    o verification/offline_exf_seaice:
1206      - dyn_lsr  : use pkg/seaice S/R (instead of pkg/thsice) to advect sea-ice;
1207      - dyn_jfnk : use pkg/thsice S/R (instead of pkg/seaice) to advect sea-ice.
1208    o model/src:
1209      - implement Finite-Volume method for (hydrostatic) presure gradient
1210        from S.-J. Lin (QJRMS 1997), for atmosphere using sigma-coordinate.
1211    o pkg/seaice: implement EVP* by Lemieux et al. (2012).
1212      - In order to be compatible with the default EVP code, this requires changing
1213        the EVP code around a little; and because any small change immediately
1214        breaks the lab_sea.hb87 verification experiment, the reference output is
1215        updated two times (each time the remaining aggrement was only 2 digits):
1216        - after replacing 1/dt by 1*recip_dt with a precomputed recip_dt
1217        - after replacing 1/(1+0.5*dt/tau) by a/(a+1), with a=2*tau/dt
1218        The adjoint test lab_sea.evp also needed to be updated.
1219      - Turn on EVP* by setting SEAICE_deltaTevp as before, and setting
1220        SEAICEuseEVPstar=.true.; for EVP* SEAICE_deltaTevp does not need to be
1221        a factor of SEAICE_deltaTdyn, and you can set the number of EVP steps
1222        explicitly with SEAICEnEVPstarSteps (thereby overriding the default of
1223        INT(SEAICE_deltaTdyn/SEAICE_deltaTevp)). Controlling EVP* is deliberately
1224        kept obscure, because I need to test it a little more.
1225    o pkg/cheapaml:
1226      - fix few incorrect type (_RL/_RS) in subroutine calls.
1227    o pkg/seaice:
1228      - new S/R SEAICE_MAP_RS2VEC (similar to SEAICE_MAP2VEC) to map _RS arrays
1229        to _RL vector; this fixes JFNK code when compiling with "-use_r4" option.
1230    o model/src:
1231      - add a warning if using select_rStar=2 with nonlinFreeSurf <> 4;
1232        change (in input_ad*/data) select_rStar from 2 to 1 for AD verification
1233        experiments global_ocean.cs32x15 & tutorial_tracer_adjsens (+ update output)
1234    o pkg/cheapaml:
1235      - replace "273.1 _d 0" by celsius2K in pkg/cheapaml/cheapaml.F and
1236        update output of experiment cheapAML_box.
1237      - store in CHEAPAML.h coeffs ssq[0:2] for saturation specific humidity,
1238        and set them only in one place (cheapaml_readparms.F).
1239      - replace "273.16 _d 0" by celsius2K & replace "3.14159 _d 0" by constant "PI"
1240      - remove re-setting of main-model parameter "celsius2K" (in cheapaml_readparms)
1241        and re-setting of cheapAML params "lath" & "p0" (in cheapaml_init_varia).
1242    o model/src/the_main_loop.F:
1243      - fix revision 129 : need both ALLOW_ECCO and ALLOW_ECCO_EVOLUTION.
1244    o pkg/seaice:
1245      - remove legacy branch code.
1246      - retire SEAICE_GROWTH_LEGACY and SEAICE_CAP_HEFF accordingly.
1247    o verification/*/code*/SEAICE_OPTIONS.h:
1248      - remove documentation for retired CPP flags (SEAICE_GROWTH_LEGACY,
1249        SEAICE_CAP_HEFF).
1250    o pkg/cheapaml:
1251      - use standard routine (S/R GET_PERIODIC_INTERVAL) to decide when it is time
1252        to load new forcing fields.
1253      - add missing "_d 0" where it's needed; + some editing (improve indentation).
1254      - remove switch to "-r8" compiler option (no longer needed) in verification
1255        cheapAML_box, keep same output (small trucation error differences).
1256    o verification/offline_exf_seaice:
1257      - add thermodynamics only test.
1258    o verification/cheapAML_box:
1259      - split the domain in 8 (2x4) tiles; add MPI and multi-threaded test;
1260        keep same output (same 14 digits for cg2d).
1261      - switch on "-r8" compiler option (some numerical values are missing
1262        the "_d 0") and update output (only 6 digits for cg2d were preserved).
1263    
1264    checkpoint64b (2012/12/24)
1265    o pkg/cheapaml:
1266      - remove un-used variables (Qnet,EmPmR) from pickup files.
1267      - store tendency of advected variables into cheapaml pickup file
1268        and fix the AB-2 restart.
1269    o verification/offline_exf_seaice and lab_sea adjoint:
1270      - switch to new code (#undef SEAICE_GROWTH_LEGACY).
1271      - switch to 4 time steps in offline, consistent with lab_sea.
1272      - match parameters from SEAICE_GROWTH_LEGACY branch in data.seaice.
1273      - update results after change of experiment seaice.
1274    o pkg/seaice:
1275      - remove option SEAICE_MULTICATEGORY; has been replaced with run-time
1276        parameter SEAICE_multDim. Issue a warning if SEAICE_MULTICATEGORY is
1277        still defined since SEAICE_multDim needs to be set to MULTDIM value (from
1278        SEAICE_SIZE.h) to recover previous #define SEAICE_MULTICATEGORY default.
1279    o model/src:
1280      - add run-time parameter to select CG2D solver minimum-residual solution
1281        (in case of a poor convergence).
1282    o pkg/seaice/seaice_lsr.F
1283      - move calculation of matrix coefficients into new
1284        S/R SEAICE_CALC_LSR_COEFFS; for now this routine remains in the same
1285        file; the main purpose of this change is to be able to reuse the code
1286        in S/R SEAICE_PRECONDITIONER
1287      - modify the computation of the residual so that the mass of sea-ice
1288        is not used twice; this simplifies the calculations, but since
1289        the residual is never used except when LSR_mixIniGuess.ge.4---and this is
1290        not tested in testreport---this does not affect the testreport results.
1291    o verification/seaice_obcs:
1292      - disable SEAICE_GROWTH_LEGACY; reset input files to match those of
1293        verification/lab_sea/input.salt_plume; changes results/output.txt*
1294    o model/src:
1295      - adapt quasi-hydrostatic formulation to work with p or p* coordinate.
1296    o pkg/seaice:
1297      - improve description of parameters in seaice_fgmres.F and start
1298        cleaning up the code
1299      - change name of SCALPROD to SEAICE_SCALPROD and modify meaning of
1300        second argument
1301      - add a metric based on grid cell area to SEAICE_SCALPROD; update
1302        results of offline_exf_seaice.dyn_jfnk
1303      - compute initial residual norm in seaice_jfnk based on SEAICE_SCALPROD
1304    o pkg/aim_v23:
1305      - fix an other bug in dissipation heating (grid-cell area was missing).
1306    o model/src + pkg/seaice:
1307      - add global (multi-tile) linear solver for pair of tri-diagonal system
1308        along X and Y lines, respectively for U and V component.
1309        Note: 1) MPI and cube-exchange not yet coded.
1310            2) probably not accurate for poorly conditioned / large size problem.
1311      - add option for SEAICE_LSR to use global (multi-tile) tri-diagonal solver;
1312        default: not compiled and not used.
1313    o pkg/seaice:
1314      - first attempt at a multi-threaded fgmres solver for the JFNK solver:
1315        introduce bi/bj loops and use global_sum_tile_rl instead of
1316        mpi_allreduce in seaice_fgmres.F
1317      - improve diagnostics output for fgmres solver (seaice_fgmres.F)
1318      - replace a few unnecessary goto statements by if-blocks  (seaice_fgmres.F)
1319      - add a verification experiment for JFNK in offline_exf_seaice
1320    o verification:
1321      - change (for now, only fwd test) offline_exf_seaice experiment:
1322        use a re-entrant channel with idealized coastline (trapezoidal shape)
1323        at southern boundary to explore seaice dynamics and thermodynamics
1324        with simple forcing. Main set-up has dynamics+thermo and SST relaxation;
1325        secondary test (input.thsice) use thermodynamics only with SST relaxation.
1326      - add seaice-dynamics only secondary test using LSR and pkg/thsice advection.
1327    o pkg/exf:
1328      - disable "sstExtrapol" when Nr=1
1329    o verification:
1330      - add new experiment "cheapAML_box" (simple 1 layer set-up from Bruno Deremble)
1331        to test pkg/cheapaml.
1332    o pkg/aim_v23 & pkg/shap_filt:
1333      - fix dissipation heating (erroneous gravity multiplication factor).
1334    o pkg/seaice:
1335      - remove unused field pressPre from jfnk solver
1336      - rename two subroutines in seaice_preconditioner.F
1337    o eesupp/src:
1338       - S/R MDSFINDUNIT avoids reserved unit numbers (scrUnit1, eeDataUnit ...)
1339    o pkg/seaice/seaice_preconditioner.F: fix preconditioner once again
1340       - remove wrong parts of the rhs and the lhs (were in there
1341         because I did not understand the concept of this preconditioner)
1342       - add an exchange between u- and v-sweep. This increases communication
1343         by a factor of two but improves the convergence of jfnk. Ideally,
1344         one would like the u- and v-sweep to be independent. So far within
1345         undocumented ifdefs
1346       - reorganize the extra computations for printing the residuals
1347    o tools/genmake2:
1348      - comment out the "mpif.h" include in NetCDF test programm (for MPI built)
1349        since it's not necessary (and was preventing to use MNC in some cases).
1350    
1351    checkpoint64a (2012/11/16)
1352    o pkg/autodiff:
1353      - improve pkg-internal logical parameter switch (inAd/inFwd mode) so that
1354        autodiff_readparms.F no longer depends on calling order (within
1355        packages_readparms.F) and no longer requires to include ${PKG}_PARMS.h):
1356        rename param turnFreeDriftInAdMode to SEAICEuseFREEDRIFTswitchInAd
1357        and change param SEAICEuseDYNAMICSinAdMode to SEAICEuseDYNAMICSswitchInAd.
1358    o pkg/obcs:
1359      - adding tidal velocity forcing capability to obcs
1360        for usage example, see verification/seaice_obcs/input.tides
1361    o pkg/seaice:
1362      - turn the LSR-relaxation parameters WFAU/V into runtime parameters
1363        SEAICE_LSRrelaxU/V
1364      - introduce runtime parameter SEAICEetaZmethod (=0 by default)
1365    o pkg/aim_v23:
1366      - implement heating from friction (bottom friction and stratospheric drag).
1367    o pkg/shap_filt:
1368      - fix diagnostic "SHAP_dKE" (was 2 time smaller); implement heating from
1369        dissipation but only for Shap_funct=2, active when addFrictionHeating=T.
1370    o model/src:
1371      - move AddMass common block from DYNVARS.h to FFIELDS.h; allow to read-in
1372        time-constant addMass field from file (addMassFile);
1373      - support for heating due to friction (and Kinetic Energy dissipation):
1374        add option, run-time switch and 3-D field array + support code ; each pkg
1375        or S/R can add heating contribution (if there is a sink of KE); the sum is
1376        accounted for as a Temperature tendency term (EXTERNAL_FORCING_T).
1377    o pkg/seaice:
1378      - complete merge of ITD code into seaice_growth.F
1379        from MITgcm_contrib/torge/itd/code/
1380        no verification so far, but Torge Martin tested
1381        "1-D test case and Beaufort set up;
1382        deliver okay results after 1 model year."
1383      - complete merge of SEAICE_SIZE.h into all relevant routines
1384      - move computation of eta at Z-points into calc_viscosities
1385        + introduce global field etaZ
1386        + add different methods for computing etaZ, for now the old
1387          method (simple averages of eta to Z-points) is hardwired
1388        + replace etaMeanZ by etaZ in seaice_lsr, seaice_calc_residual,
1389          seaice_preconditioner
1390      - simplify computations for SEAICE_ZETA_SMOOTHREG
1391      - seaice_preconditioner:
1392        + replace one remaining press by pressLoc (mistake)
1393        + adjust printing of residuals
1394      - improve I/O of diagnostics of JFNK in seaice_jfnk.F:
1395        + add (SEAICE.h) and rename some counters (initiliased in
1396          seaice_init_fixed.F)
1397        + add _BEGIN/END_MASTER (myThid)  around print statements
1398        + print total number of iterations and failures over SEAICE_monFreq
1399          interval to STDOUT
1400      - move control over output-messages by fgmres to seaice_jfnk to save
1401        some operations
1402      - move resetting initial guess for fgmres outside of seaice_fgmres_driver
1403        in order to make restarts with sol .ne. zero (fgmres with restarts)
1404        (seaice_jfnk.F, seaice_fgmres.F)
1405      - seaice_calc_l/rhs.F: replace maskW/S by maskInW/S; this fixes
1406        a serious convergence problem when open boundaries are involved
1407    o pkg/ggl90: fix computation of control volumes for the case of
1408      ALLOW_GGL90_HORIZDIFF (probably not used very often): move control volumes
1409      up half a grid cell from C-centered to W-centered (pointed out by C. Eden)
1410    o pkg/seaice: simplify seaice_evp by avoiding use of extra fields u/vIceC
1411    o pkg/autodiff
1412      - Add inAdMode switch for SEAICEuseDYNAMICS:
1413        SEAICEuseDYNAMICSinAdMode
1414        (extend logic in ADAUTODIFF_INADMODE_SET)
1415    o pkg/seaice
1416      - Step 1 of merging ice-thickness distribution (ITD) code from
1417        MITgcm_contrib/torge/itd/ (author: Torge Martin)
1418        The code implements concept laid out in Thorndike et al. (1975);
1419        code is enabled via CPP flag SEAICE_ITD
1420        nITD (in SEAICE_SIZE.h) defines number of ice thickness categories;
1421        code is not complete yet!!
1422      - SEAICE_SIZE.h now included in almost all seaice routines
1423    o verification (using seaice):
1424      - switch back seaice-dynamics (+ lower SOLV_MAX_ITERS) in ADM exp.
1425        global_ocean.cs32x15.seaice ; update results.
1426      - compile B-grid dynamics in FW test exp 1D_ocean_ice_column ;
1427      - compile C-grid dynamics with #define SEAICE_ALLOW_JFNK in FW test exp
1428        offline_exf_seaice (previously compiling B-grid).
1429    o pkg/exf:
1430      - fix some STOP conditions in exf_check.F (from Aug 28, modifs did not allow
1431        to specify neither just 1 comp of wind or wind-stress, nor no surface momentum
1432        forcing): just replace CPP option ALLOW_ATM_WIND with run-time param useAtmWind.
1433    o pkg/layers (adjust changes from Sept 19):
1434      - do snap-shot output and fill diagnostics from inside iLa loop (layers_calc.F)
1435        this allows to remove "layers_maxNum" dimension from all layers arrays.
1436    o pkg/layers (adjust changes from Sept 19):
1437      - remove ALLOW_LAYERS_OUTPUT ; fix snap-shot and time-ave output ;
1438      - snap-shot extended to all type of layers (not just the 1rst type);
1439      - remove layers variables when corresponding CPP option is undef.
1440    o pkg/layers:
1441      - rename pkg/layers variable and add new output (layer exist & un-weighted
1442        velocity in layer)
1443    o pkg/seaice:
1444      - simplify (?) ocean-drag coefficent computations by using
1445        the same routine in all three solvers (saves some code lines)
1446      - remove global fields DRAGA and DRAGS from C-grid code and
1447        declare them locally in lsr.F (the only place where they are
1448        still used)
1449      - update AD output of lab_sea.evp (very sensitive anyway).
1450    o pkg/seaice: add Jacobian-free Newton Krylov solver for ice dynamics
1451      (Lemieux et al. 2010, 2012). Turn on with the usual SEAICE_ALLOW_JFNK
1452      and SEAICEuseJFNK=.true. A few things to note:
1453      - involves a FGMRES, that is parallel but very inefficient,
1454        because of many scalar products (global sums) in the Gram-Schmidt
1455        orthogonalization method. Needs to be replaced. Original code
1456        from J.-F. Lemieux
1457      - preconditioner for FGMRES is a stripped down version of LSOR
1458      - SOLV_MAX_ITERS is now used for LSOR as a solver and as a
1459        preconditioner. For the preconditioner, the default is set to 10.
1460      - Jacobian times vector is computed with finite differences
1461      - marginally related to JFNK-solver: add a smooth regularization for
1462        zeta with tanh that will improve convergence (Lemieux and Tremblay,
1463        2009) for any implicit solver (not implemented for EVP because EVP
1464        does not need this regularization in the first place). Define
1465        SEAICE_ZETA_SMOOTHREG in SEAICE_OPTIONS.h to use.
1466    o eesupp/src:
1467      - check in genmake2 that intrinsic S/R flush is available.
1468      - add S/R to flush IO unit (if intrinsic S/R flush is available)
1469      - flush standard & error msg unit before MPI termination
1470      - if debugMode, flush IO unit after printing msg
1471    o pkg/ctrl:
1472      - ctrl_unpack.F, ALLOW_GENARR3D_CONTROL code: fix missing argument in call
1473        to ctrl_set_unpack_xyz.
1474    
1475    checkpoint64 (2012/10/09)
1476    o pkg/shelfice
1477      - in mom_fluxform.F, mom_vecinv.F:
1478        CALL SHELFICE_V_DRAG(bi,bj,k,vFld,KE,KappaRU,vF,myThid)
1479        Bug fix KappaRU -> KappaRV
1480        does not change verification/isomip but may change other setups
1481        (presumably constant KappaRU=KappaRV)
1482      - fix diagnostics SHIU/Vdrag (thanks to Tom Millgate)
1483    o pkg/obcs:
1484      - fixed some indexing bugs in obcs_seaice_sponge.F
1485      - added obcs relaxation subroutines for HSALT and HSNOW
1486      - changes verification/seaice_obcs/results/obcs_seaice_sponge.F
1487  o pkg/seaice:  o pkg/seaice:
1488    - add "multicategory" parameterization for snow in analogy to ice,    - add "multicategory" parameterization for snow in analogy to ice,
1489      default is off for now.      default is off for now.

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