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revision 1.1749 by mlosch, Tue Oct 16 07:08:56 2012 UTC revision 1.1993 by jmc, Mon May 12 03:37:11 2014 UTC
# Line 4  $Name$ Line 4  $Name$
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    o model/src: modifications relatd to atmosphere p*:
8      - Switch to more accurate p* coordinate slope term (calc_grad_phi_hyd.F)
9      - With p* or Sigma-P, use constant reference Pot.Temp (thetaConst) instead
10        of vertical profile tRef in geopotential background and anomaly.
11      - Acount for true p* correction in theta <-> T conversion in pkg/aim_v23
12        and pkg/atm_phys.
13      - Update FWD output of experiments: aim.5l_cs (x2), fizhi-cs-32x32x40,
14        fizhi-cs-aqualev20, fizhi-gridalt-hs, tutorial_held_suarez_cs, cpl_aim+ocn.
15    o pkg/seaice: fix a bug in seaice_prepare_ridging.F, forgot a sqrt
16    o pkg/ptracers: compute ptracer source/sink due to linear free surface.
17        not used right now, but can be used in BGC packages to fix conservation.
18    o pkg/dic, pkg/gchem: move tracer_meanarea to gchem, so it can be used by
19        other packages too.
20    o pkg/seaice/seaice_calc_ice_strength.F: replace SEAICE_rhoSnow by
21        SEAICE_rhoIce in the Rothrock (1975)-type strength calculations (bug fix)
22    o model/src:
23      - since we have several heat capacity (even in model/src), define "recip_Cp"
24        as local variable (no longer in common block) to avoid any confusion.
25      - add thetaConst in PARAMS.h (to be used with pStar or sigma-P coords).
26    o pkg/exf:
27      - from Jeff Scott: add option (#define EXF_CALC_ATMRHO) to calculate local
28        air density as function of air Temp, Humidity and atm pressure.
29    
30    checkpoint64w (2014/05/02)
31    o verification:
32      - update output_adm.txt files for experiment global_ocean.cs32x15 (seaice &
33        seaice_dynmix) and lab_sea (primary test & noseaicedyn): moving/changing
34        code from seaice_growth.F & seaice_advdiff.F to new ridging routines
35        seaice_reg_ridge.F seaice_do_ridging.F affects AD gradient
36        (down to 8-7 matching digits for global_ocean and 5-6 for lab_sea).
37    o model/src: for atmosphere in p* coords:
38      - store factor rStarFacC**atm_kappa (= pStarFacK) in common block
39      - implement more accurate p* coordinate slope term (in calc_grad_phi_hyd.F),
40        but not yet activated.
41    o pkg/seaice: fix restart problem for ITD with new ice strength parameterisation:
42      - move computation of opnWtrFrac = 1-AREA to before computing ice strength
43      - this changes the results (but not for any verification experiment, because
44        none tests this), but avoids having an extra field in the restart files
45    o pkg/seaice: remove global variable TICE (not needed)
46      - replace by TICES or local variable where necessary (cost_seaice_test,
47        seaice_diagnostics_state)
48      - move copying TICE to TICES from seaice_check_pickup to seaice_read_pickup
49      - use specific read/write routines for reading and writing individual leves
50        of a multilevel field
51    o pkg/ctrl & model/inc:
52      - move additional anomaly fields of control vars (related to options:
53         ALLOW_KAPGM_CONTROL, ALLOW_KAPREDI_CONTROL and ALLOW_BOTTOMDRAG_CONTROL)
54        from DYNVARS.h into new header file: CTRL_FIELDS.h
55    o pkg/seaice: some small modifications to the ridging code
56      - make fw2ObyRidge a global variable and add the freshwater flux to
57        seaice_growth
58      - pass actual thickness from seaice_prepare_ridging, so that it is
59        computed only in one place and compute it in the same way as in
60        seaice_growth
61      - initialise more fields in seaice_do_ridging that where cause floating
62        point exceptions over land
63    o pkg/seaice: preparations for ridging code and first real ridging code
64      - move most of "PART 1" of S/R seaice_growth into a new and separate
65        S/R seaice_reg_ridge that will both regularize the state variable after
66        advection call the actual ridging routine;
67      - requires to make 5 fields global fields: d_HEFFbyNEG,d_HSNWbyNEG,
68        d_AREAbyRLX,d_HEFFbyRLX,saltFluxAdjust;
69      - remove ridging code from seaice_advdiff
70      - clean up remaining part 1 of seaice_growth in an attempt to make it
71        more readable (this is probably subjective)
72      - call seaice_itd_redist once in the initialisation phase to have the initial
73        conditions in the correct category
74      - finally: add new ridging routine for ITD code
75    
76    checkpoint64v (2014/04/11)
77    o pkg/ecco:
78      - add runtime parameters mdt[start,end]date[1,2]
79      - rename variable "tpmean" as "mdt" and "topexmeanfile" as "mdtdatfile"
80    o pkg/seaice:
81      - make deltaC a global variable, so that it can be used in ridging code
82      - first step towards ridging: introduce new routines that compute
83        ice strength based on ridging parameters
84      - add diagnostic for HSNOWITD
85      - add opnWtrFrac as a global variable (required for ridging scheme)
86    o pkg/salt_plume + pkg/seaice/seaice_growth.F
87      - add SALT_PLUME_IN_LEADS flag to activate pkg/salt_plume only when ice
88        AREA exceeds a threshold (code contributed by I.Fenty in 2011)
89    o verification/hs94.1x64x5:
90      - leave ALLOW_AUTODIFF_TAMC undefined in code_oad/AUTODIFF_OPTIONS.h
91      - do not use ECCO_CPPOPTIONS.h anymore for TAF & OpenAD Adjoint tests.
92    o autodiff:
93      - Start to include explicitly AUTODIFF_OPTIONS.h, COST_OPTIONS.h,
94        and CTRL_OPTIONS.h in src files (to enable to skip the ECCO_CPPOPTIONS.h)
95        For now, only in pkgs used in verification/hs94.1x64x5.
96      - Replace ALLOW_AUTODIFF_TAMC by ALLOW_AUTODIFF (except for tape/storage
97        which are specific to TAF/TAMC).
98      - Replace ALLOW_AUTODIFF_OPENAD by ALLOW_OPENAD:
99        since ALLOW_OPENAD is defined in PACKAGES_CONFIG.h (any time pkg/openad
100        is compiled), this simplifies/reduces which *_OPTIONS.h file to include.
101      - OpenAD: change Makefile to generate the appropriate AD_CONFIG.h when
102        building mitgcmuv_ad (make adAll).
103    o pkg/ecco:
104      - cost_gencost_seaicev4.F:
105         reformulate proxy cost as function of sst and local param SEAICE_freeze
106         change cost names from siv4-[sst,vol] to siv4-[deconc,exconc]
107      - add stop statement if old names siv4-[sst,vol] are used
108      - add snapshots + cost reports for atmospheric longwave
109      - remove factor 0.1 in front of wtau[u,v]
110      - replace never used flag ALLOW_TMI_COST_CONTRIBUTION with
111         ALLOW_TMI_SST_COST_CONTRIBUTION
112    o pkg/atm_phys:
113      - add some diagnostics for Short-wave and for convection S/R.
114    o pkg/seaice/seaice_growth:
115      - fix a bug in the lateral melt parameterization for SEAICE_ITD
116        in seaice_growth; tempFrz needs to be computed inside the i/j-loop
117      - rearrange loop order for better vector code in the same code block
118      - rewrite the floeDiameter formula to have fewer divisions
119      -  (miraculously) none of this changes the results of seaice_itd
120    o pkg/smooth:
121      - move param smooth2Ddiffnbt to pkg/ecco
122    o pkg/salt_plume:
123      - salt_plume_frac.F:
124         clean up local param names
125         reformulate (1-frac) to frac; original 1-frac was based on swfrac code
126    o pkg/rw:
127      - add RS version of S/R READ_MFLDS_LEV.
128    o pkg/streamice:
129      - fix the restart test by writing/reading pickup_streamice files.
130    o pkg/seaice:
131      - refine checks for jfnk-related parameters
132      - comment out if statement with SEAICEuseIMEX parameter as long as there
133        is no IMEX code to avoid confusion and surprises
134    
135    checkpoint64u (2014/03/07)
136    o verification/MLAdjust:
137      - rename secondary test suffix:
138         1.leith  -> A4FlxF  + switch to flux-form & add side-drag
139         0.leithD -> AhFlxF  + switch to flux-form
140         0.smag   -> AhVrDv  (use Vorticity-Div. visc form) + add side-drag
141         0.leith  -> AhStTn  (use Strain-Tension visc form) + add side-drag
142    o pkg/mom_vecinv:
143      - remove unused arguments from S/R MOM_VI_HDISSIP & MOM_HDISSIP (as it used
144        to be before mom_calc_visc.F)
145      - skip the call to MOM_CALC_TENSION & MOM_CALC_STRAIN if not needed.
146      - add 2nd copy of vort3 & strain that knows about lateral BC (free/no slip):
147        this is simpler for the adjoint and for diagnostics.
148    o model/src + pkg/momentum:
149      - add input files for  2-D additional Western and Southern cell-edge wall
150         (e.g., to add "thin-wall" where it is =1).
151      - fix sideDrag option for thin-walls with Non-Lin Free-Surf
152        using 2nd hFacZ that is computed from initial (fix domain) hFac
153      - known limitations of thin wall implementation: not yet coded for sigma
154        coords; not working with CD-scheme neither.
155    o pkg/seaice:
156      - rename recently introduced parameters from (wrong name) AB to
157        BDF (backward difference time discretisation)
158      - retire runtime parameters SEAICEuseAB2, SEAICE_abEps
159    o tools/adjoint_options:
160      - remove setting of "OPENAD=true" (now set by command line "genmake2 -oad")
161    
162    checkpoint64t (2014/02/01)
163    o pkg/ecco
164      - add compile flag ALLOW_GENCOST_TIMEVARY_WEIGHT in ECCO_OPTIONS.h and
165        runtime logical flag gencost_timevaryweight to read daily sea-ice sigma
166      - replace hard-coded record number and period which only work for monthly
167        with read-in runtime param that works for other periods (month,day,year)
168    o pkg/thsice
169      - corrected store directive fixes thsice adjoint gradient checks
170    o genmake2 & testreport:
171      - add genmake2 option "-oad" to generate a Makefile for OpenAD built and
172        in this case, use tools/adjoint_options/adjoint_oad as default AD optfile.
173        Update testreport accordingly. No need to set "export OPENAD=true"
174        in adjoint_options/adjoint_oad anymore (will be removed later).
175    o pkg/shelfice:
176      - put T & S shelfice forcing into model surfaceForcing_T,_S (for now,
177        only if SHELFICEboundaryLayer=F); Change model/src/external_forcing.F
178        so that surface forcing applies to k=kSurf if using pkg/shelfice.
179    o pkg/ctrl, pkg/grdchk, pkg/ecco:
180      - Changes to make GENARR more modular (i.e. invisible if not used)
181    o model/src/temp_integrate.F and salt_integrate.F
182      - re-include store directives that were removed on Dec 27th.
183    o model/src/external_forcing_surf.F
184      - add storage directives for EmPmR and PmEpR to avoid recomputation of
185        seaice_model in the adjoint that is problematic when seaice_model is
186        turned off in the adjoint. The resolved issue dated back to July when
187        EXTERNAL_FORCING_SURF call was moved.
188        Update global_ocean.cs32x15/*/output_adm.seaice_dynmix.txt accordingly.
189    o pkg/exf/exf_check.F
190      - fix a small bug again (originally found by Wentao Liu, now found again)
191      - streamline error output
192    o pkg/streamice and aim_v23:
193      - replace a few "_EXCH_XY_RL (" with "_EXCH_XY_RL(", so that
194        Apple's /usr/bin/cpp knows what to do:
195        Apple LLVM version 5.0 (clang-500.2.79) (based on LLVM 3.3svn)
196        Target: x86_64-apple-darwin13.0.0
197    
198    checkpoint64s (2014/01/05)
199    o tools/adjoint_options:
200      - switch to fastopt.net TAF server (instead of default fastopt.de) for
201        AD optfiles adjoint_diva & adjoint_f95 (similar to adjoint_default).
202    o model/src:
203      - remove some unnecessary TAF storage directives in forward_step.F and
204        in dynamics.F (note: not always removed by TAF, e.g., double storage
205        of kappaRU,kappaRV in former version of dynamics.F).
206    o model/src & pkg/ptracers:
207      - call directly GAD_IMPLICIT_R & IMPLDIFF + DWNSLP_APPLY from temp_integrate.F
208        salt_integrate.F and ptracers_integrate.F (instead of from thermodynamics.F)
209        and remove ptracers_dwnslp_apply.F & ptracers_implicit.F
210      - call MATRIX_STORE_TENDENCY_EXP for each tracer (in ptracers_integrate.F)
211      - add fZon & fMer as output argument of S/R GAD_CALC_RHS.
212      - update TAF AD-output of experiments global_ocean.90x40x15 (13 for AD-grad).
213    o useSingleCpuInput separates single-CPU input from single-CPU output;
214        for now only implemented for in exf_interp_read.F
215    o verification/advect_xy:
216      - fix missing EXCH call in local version of ini_salt.F and update output.
217    o momentum diagnostics:
218      - fix which deltaT is used in Total-Tendency diagnostics.
219      - fix typo in diagnostics for momentum tendency from AB.
220    o pkg/seaice/seaice_lsr.F: fix an initialisation bug for the
221        SEAICE_VECTORIZE_LSR_ZEBRA option that lead to NaNs on a NEC-SX8
222    
223    checkpoint64r (2013/12/08)
224    o verification/*/results:
225      - Update reference output of experiments that were passing with just 13 digits
226         (make it easier to detect future changes in results)
227    o model/src & pkg/ptracers:
228      - move calls to GAD_ADVECTION (Multi-Dim advection) from thermodynamics.F to
229        inside temp_integrate.F and salt_integrate.F and from ptracers_advection.F
230        to inside ptracers_integrate.F ; remove ptracers_advection.F
231    o coupling interface pkgs:
232        [atm_compon_interf, ocn_compon_interf & atm_ocn_coupler]
233      - change the config check to test the agreement of Ocean Depth
234        with ATM land/sea mask (instead of ATM orography);
235      - send to coupler the number of coupler time-steps to do for this run:
236        this allows to check for consistency and don't need anymore to be
237        specified in parameter file "data";
238      in coupler:
239      - check consistency of RunOff map versus Ocean Depth and ATM land/sea mask.
240      - improve report to log-file of config setting (pass log-file unit to few S/R)
241    o pkg/compon_communic:
242      - add coupling send/receive for non-tiled integer vector;
243      - add S/R to check and stop if any proc has an error (similar to
244        eesupp/src/stop_if_error.F but single thread and across Comm_World).
245    o pkg/exch2:
246      - in exch2*_get_rx[1,2]: use new list "W2_tileIndex" to replace search
247        through list of all tiles my proc owns.
248    o model/src:
249      - AUTODIFF only: in calc_adv_flow.F, recompute rTransKp (instead of copying
250        from rTrans) to simplify dependencies (no need to store rTrans anymore in
251        calling S/R); this affects AD results at machine truncation level:
252        update AD-output (TAF) of experiments: 1D_ocean_ice_column,
253        bottom_ctrl_5x5 & obcs_ctrl (12 digits for AD grad, same FWD grad).
254    o tools/build_options:
255      - simplify Warnings options (-ieee & -devel cases) in linux_amd64_gfortran
256    o coupling interface pkgs:
257        [compon_communic, atm_compon_interf & ocn_compon_interf]
258      - move declaration of local array "ibuf" out of header file "CPLR_SIG.h"
259        to each S/R that needs it; remove un-used variables.
260      - change component tile registration (cpl_register.F in both compon_interf
261        and mitcomponent_tile_register.F) to pass the full list of tiles
262        information (including bi,bj) in 1 vector (instead of in a bi,bj matrix).
263      - with pkg/exch2: adopt the same convention used for I/O to define mapping
264        towards coupler global array (unless W2_useE2ioLayOut=F):
265         a) can now use different tiling between atm & ocn comp.
266         b) no needs to modify the run-Off map when changing tiling (was needed
267            even if using the same tiling between atm & ocn).
268         c) will allow to run with blank-tiles in 1 component (e.g., for ocean
269            full land tiles); not yet tested.
270      - check for valid mapping from comp. tile to coupler global array
271      - improve report of tile registration results to log file.
272    o pkg/exch2:
273      - in eesupp/src/eeboot.F: move call to W2_EEBOOT before Coupler
274        tile-registration (CPL_REGISTER);
275      - activate (un-comment) definition and setting of "W2_tileIndex" list to
276        store the local bi,bj indices of each tile;
277      - also print bi,bj in local report to log file;
278      - fix pkg/debug/debug_cs_corner_uv.F for the case nSy > 1 (left from
279        Jun 2009 modif of pkg/exch2).
280    o testing on baudelaire:
281      - run 2 tests at a time: no significant slow down (since enough cpu) and
282        get the full set of test done earlier
283      - switch the ifort test to "-devel" ; run the OpenAD test everyday.
284    o model/src/thermodynamics.F and routines called from it:
285      - pkg/gmredi: gmredi_residual_flow.F (replacing gmredi_calc_uvflow.F &
286        gmredi_calc_wflow.F) to update eulerian velocity (input) into residual
287        velocity (outp) by adding bolus velocity.
288      - model/src: calc_adv_flow.F (replacing calc_common_factors.F) to compute
289        mass transport from velocity + lateral grid cell area
290      - rename calc_gt.F to temp_integrate.F (includes call to TIMESTEP_TRACER)
291      - rename calc_gs.F to salt_integrate.F (includes call to TIMESTEP_TRACER)
292     in thermodynamics.F
293      - remove k from thermodynamics.F and move it to temp_integrate.F
294        salt_integrate.F and ptracers_integrate.F (now done inside the tracer
295        loop).
296      - compute locally (in thermodynamics.F) 3-D velocity field that is used to
297        advect tracers; pass it as argument to GAD_ADVECTION, GAD_SOM_ADVECT,
298        PTRACERS_ADVECTION, TEMP_INTEGRATE, SALT_INTEGRATE, PTRACERS_INTEGRATE,
299        GAD_IMPLICIT_R and PTRACERS_IMPLICIT
300      - update AD-output (TAF & OAD) of experiments: 1D_ocean_ice_column,
301        global_ocean.90x40x15, tutorial_global_oce_biogeo and
302        tutorial_tracer_adjsens (+ TLM output).
303    o tools/OAD_support and (verification/*/) code_oad:
304      - OAD_support/cb2mGetModules.csh: add PACKAGES_CONFIG.h in header file to
305        module conversion ; remove unneeded CPP_EEOPTIONS.h.
306      - code_oad/CPP_OPTIONS.h: remove PACKAGES_CONFIG.h and use a more standard
307        version (closer to model/inc/CPP_OPTIONS.h).
308    o model/src:
309      - remove parameter "useOldFreezing" from PARAMS.h and push it to the
310        retired list of parameters (routine FREEZE has been replace by surface
311        freezing (10.yrs ago) and by pkg/frazil (interior freezing).
312    o pkg/gmredi:
313      - add option (GM_CALC_TRANSP_FROM_VEL) to compute transport directly from
314        velocity (same scheme but affects machine truncation) for GM_AdvForm.
315      - update output of FWD experiments: front_relax.bvp,
316        global_ocean.90x40x15.dwnslp, global_ocean.cs32x15 and ideal_2D_oce.
317    
318    checkpoint64q (2013/11/17)
319    o verification:
320      - generate new output on baudelaire (gfortran, -ieee) for OpenAD experiments
321        tutorial_global_oce_biogeo and global_ocean.90x40x15.
322      - generate new output (growth & melt) for seaice_itd experiment after
323        updating the input pickup_seaice files (previously wrong).
324    o pkg/cost:
325      - define a "final cost function" for each tile, and use GLOBAL_SUM_TILE_RL
326        (instead of _GLOBAL_SUM_RL) to get the final cost from all procs & threads:
327        o this fixes global-sum value if multi-threads (since GLOBAL_SUM_RL
328          cannot be applied to var in common block).
329        o allows to get results independent of tile-per-proc setting (if using
330          slower GLOBAL_SUM_SEND_RECV option).
331      - update accordingly: seaice_cost_final.F, shelfice_cost_final.F,
332        thsice_cost_final.F and ecco_cost_final.F (this one affects lab_sea
333        forward gradients: update output).
334      - update */code_oad/externalDummies.F by adding dummy GLOBAL_SUM_TILE_RL
335        S/R and, for most exp., also comment out GLOBAL_SUM_R8.
336    o pkg/mom_common:
337      - move to pkg/mom_common and model/src (previously in tutorial_deep_convection
338        code) 2nd version of isotropic 3-D Smagorinsky code interface: strain and
339        viscosity are locally declared in dynmics.F and pass as argument to CALC_GW;
340        ensure that all field value that are used are set.
341    o tutorial_deep_convection (smag3d):
342      - add missing scaling in mom_calc_smag_3d.F;
343      - set smag3D_coeff in input.smag3d such that results do not change.
344    o pkg/dic:
345      - change dic_cost.F to compute cost on each tile first and then apply
346        GLOBAL_SUM_TILE_RL: this affects forward gradient of AD experiments
347        tutorial_dic_adjoffline & tutorial_global_oce_biogeo; update output.
348      - remove kLev argument and use GLOBAL_SUM_TILE_RL in tracer_meanarea.
349    o eesupp/src & pkg/mdsio:
350      - remove gather/scatter_vector.F (from eesupp) and mdsio_read/writevector.F
351        (from pkg/mdsio) since they are no longer used for tape IO.
352      - move simple C subroutine "setdir.c" from pkg/compon_communic to eesupp/src
353        (+ keep a copy in pkg/atm_ocn_coupler).
354    o verification/isomip:
355      - split domain in 8 squared tiles (instead of just 2) for FWD, AD & OAD tests.
356    o tools/build_options:
357      - optfile linux_amd64_ifort11, fast (no ieee) case:
358        to get a working restart for all experiments, add "-fp-model source"
359        to FOPTIM (also remove "-opt-streaming-stores auto" <- this is the default).
360    
361    checkpoint64p (2013/10/20)
362    o pkg/autodiff:
363      - adread_adwrite.F: when type and length do not match ALLOW_AUTODIFF_WHTAPEIO
364        criteria, return to simple (default) tape IO format.
365    o pkg/mdsio (+ eesupp/src):
366      - rewrite/simplify tape-IO S/R (new S/R MDS_READ/WRITE_TAPE replace
367        previous MDSREAD/WRITEVECTOR) with 2 array argument from each type (R4/R8);
368      - fix globalFile and singleCpuIO options using simpler global mapping.
369      - new pairs of scatter/gather vector S/R (one for each type, generated from
370        template) corresponding to simpler global mapping.
371      - adread_write.F: switch to new S/R (but leave old calls commented) and write
372        to globalFile when parameter globalFiles is set to True.
373      - switch on useSingleCpuIO in AD experiments: global_ocean.90x40x15 & isomip.
374    o pkg/autodiff:
375      - adread_adwrite.F: add a hack for RS arrays (when RS=real*4);
376        with ALLOW_AUTODIFF_WHTAPEIO defined, since corresponding (real*4) is
377        missing, just add a STOP if array type do not match.
378    o pkg/exf:
379      - to allow to use seaice-fraction from pkg/exf in other pkgs than pkg/seaice:
380         rename CPP option EXF_ALLOW_SEAICE_RELAX to EXF_SEAICE_FRACTION
381         and rename array obsSIce to exf_iceFraction.
382    o tutorial_deep_convection:
383      - add 1rst version of isotropic 3-D Smagorinsky code (from Louis-Philippe),
384        for now all in this exp. code dir.
385      - add secondary test using Smag-3D viscosity (keep very low backgroud visc for
386        testing) and flux-limter advection scheme for Temp. (no explicit diffusion).
387    o eesupp/src:
388      - added SINGLE_DISK_IO option because reading of parameter files on
389        very large number of processors did not work with existing set-up
390    
391    checkpoint64o (2013/09/25)
392    o pkg/atm_phys & atm_compon_interf:
393      - allows for coupling of gray-atmosphere (atm_phys) with ocean.
394    o tools/build_options:
395      - switch from "-fPIC" to "-mcmodel=medium" in optfiles: linux_amd64_gfortran
396        & linux_amd64_ifort11 and in linux_amd64_g77 & linux_amd64_open64 also
397        remove CPP setting (was identical to genmake2 default).
398    o pkg/gmredi & model/src: Some updating and work done on the residual model.
399      - created new file model/src/calc_eddy_stress.F to calculate the eddy stress.
400      - fixed up the calculation of the eddy stress and how it is added to the
401        external forcing via taueddy_external_forcing.F
402      - at the moment, it is very experimental and only works with the variable eddy
403        diffusivity calculated in gmredi_k3d.F
404    o pkg/seaice/seaice_check.F: add a check to catch the case of specifying
405        lw/swfluxfile instead of lw/swdownfile in data.exf together with pkg/seaice
406    o testreport (& tools/do_tst_2+2):
407      - for MPI test, set default COMMAND to 'mpirun -v -np TR_NPROC ./{executable}'
408    o tools/build_options: linux_amd64_gfortran & linux_amd64_ifort11:
409      - remove CPP='cpp -traditional -P' (this is genmake2 default)
410      - add switch (for big setups) to use 'medium' memory-model (but leave it
411        commented out for now). Note: needed with FC 19 to compile big setups.
412    o pkg/atm_compon_interf:
413      - regroup per field origin (model & pkgs) the coupling storage routines
414         (which accumalate in time each coupling field)
415      - move bi,bj loops inside atm_store_my_data.F and store also wind-stress;
416        update accordingly + simplify aim_do_physics.F
417    
418    checkpoint64n (2013/08/26)
419    o pkg/bbl:
420      - update formulation to reduce dispersion of tracer properties in bbl
421      - replaced horizontal and vertical transport parameters with velocities
422      - changes results for verification/global_with_exf.yearly
423    o verification/halfpipe_streamice:
424      - change to matrix construction; update both Fwd & AD output.
425    o verification/tutorial_tracer_adjsens:
426      - OpenAD test: switch to vector-invariant momentum since fluxform with
427        rStar causes problems with OpenAD; update output.
428    o tools:
429      - genmake2: define a common prefix for all temp-file names ; move them
430        to local /tmp disk (but would be easy to move them back);
431      - xmakedepend: apply the same switch for temp-files.
432    o pkg/offline:
433      - changes for use with rStar (NLFS): assume that we continue to provide
434        UVELMASS/hFacW_ini & VVELMASS/hFacS_ini (hFacWi,S_ini as written in grid
435        output files) and apply r* scaling at each time-step (function of the time
436        varying Eta field); use normal pickup files (needed for restart with NLFS).
437    o adjoint with OpenAD:
438      - move OpenAD-specific files from verification/OpenAD/code_oad_all to a new
439        package openad.  This package has to be compiled for all runs with OpenAD
440        instead of specifying code_oad_all as a modification directory.
441      - link the fortran templates from tools/OAD_support to the build directory
442        for preprocessing to avoid conflicts between different setups compiled
443        simultaneously and simplify cleanup.
444    o pkg/exf:
445      - in exf_getforcing.F: comment out most of the EXCH calls (fields used by
446        main model or other pkgs are exchanged in EXF_MAPFIELDS).
447    o model/src:
448      - do_stagger_fields_exchanges.F: skip EXCH calls when using pkg/offline
449        (similar to do_fields_blocking_exchanges.F).
450    o tools/genmake2:
451      - remove TAF output src code just before calling staf (when not doing a fresh
452        built, will stop if things go wrong with staf).
453      - fix target "adobj" (left from TAF version-2 transition)
454    o pkg/diagnostics:
455      - add a parameter to track the status of pkg/diagnostics activation;
456        this replace/extend the use of logical param "settingDiags" (to check
457        when adding diag to the list) to also check any DIAGNOSTICS_[]FILL* call.
458        New S/R to print error message and stop when pkgStatus is not right.
459      - to try: add a warning when "data.diagnostics" exist but useDiagnostics=F.
460    
461    checkpoint64m (2013/08/13)
462    o model/inc:
463      - move FCORI_MACROS.h from PARAMS(_MACROS).h to GRID_MACROS.h (left from
464        8 yrs ago modif when Coriolis arrays were moved from PARAMS.h to GRID.h)
465    o pkg/kpp & aim_v23:
466      - only call DIAGNOSTICS_FILL when useDiagnostics=TRUE.
467    o pkg/seaice:
468      - restore (last time on 2011/12/24) ability to compile pkg/seaice with
469        undefined pkg/exf ALLOW_ATM_TEMP or ALLOW_RUNOFF CPP-options.
470      - only call DIAGNOSTICS_FILL when useDiagnostics=TRUE.
471    o eesupp/src:
472      - fix check for overlap-size argument (myOLn.GT.MAX_OLY_EXCH)
473        in exch1_rx[_ad].template (thanks to Francois Lefeuvre report).
474    o switch to TAF version-2:
475      - add flow directives to "freeze" naming convention for ad-routines that
476        are used in I/O routines of adjoint state and associated common blocks
477        that are used in adcommon.h (backward compatible with version-1)
478      - update all ad-optfiles (in tools/adjoint_options + few local to some
479        verification exp) to switch to latest TAF version (currently 2.5.5);
480        merge "*_mpi" adoptfiles into the corresponding non-mpi (but commented
481        out except for diva).
482      - the major change with TAF version-2 is that both the differentiated
483        routines and the forward routines (new) are returned as part of the TAF
484        output source code. Update genmake2 accordingly.
485      - new output for AD experiment tutorial_global_oce_biogeo (better AD gradient
486        with version-2 when compared to TLM or FWD gradient); other experiments
487        output show minor changes (machine truncation level); update the few AD &
488        TLM output with 12 matching digits only (some prior to version-2 switch).
489    
490    checkpoint64l (2013/08/05)
491    o model/src:
492      - in dynamics.F, skip the call to CALC_VISCOSITY if momViscosity=F
493      - main_do_loop.F: no longer includes additional (AUTODIFF) header files
494        when using TAF but only if using OpenAD.
495    o pkg/mom_common+fluxform+vecinv:
496      - always set horiz. viscosity arrays to background value before calling
497        MOM_CALC_VISC (in MOM_FLUXFORM & MOM_VECINV) and call S/R MOM_CALC_VISC
498        only when using variable horiz. viscosity (useVariableVisc=T);
499      - simplify mom_vecinv.F (only 1 block for momViscosity).
500    o pkg/mom_common: variable horiz. viscosity in NH code
501      - move horiz-viscosity 3-D arrays viscAh_W & viscA4_W (used in calc_gw.F)
502        from model/inc/NH_VARS.h to pkg/mom_common/MOM_VISC.h
503      - store in common block (in MOM_VISC.h) logical parameters: useHarmonicVisc,
504        useBiharmonicVisc & useVariableVisc.
505      - fix old bug (already in 1rst implementation of variable horizontal viscosity
506        in calc_gw.F, version 1.27, 2006/06/20):
507        horizontal bi-harmonic viscosity in gW was missing when wiscA4W=0
508        even if variable bi-harmonic viscosity (e.g., viscA4Grid) was non-zero.
509      - change background horiz viscosity in vertical momentum (gW) to always be
510        viscAhW,viscA4W (instead of switching to viscAhD, viscA4D when using
511        any type of variable viscosity, e.g., viscAh/4Grid)
512      - change default value of viscAhW,viscA4W to viscAhD,viscA4D (instead of
513        viscAh,viscA4) which default to viscAh,viscA4 :  this avoid missing
514        horiz. viscosity in W eq when just setting viscAhD/Z,viscA4D/Z (since
515        default viscAh,viscA4 is zero).
516    o model/src:
517      - extend length of drC & recip_drC from Nr to Nr+1.
518    o Divided Adjoint (DIVA) with MPI:
519      - genmake2: do not create local ./mpi_headers dir when no file to copy into.
520      - remove option ALLOW_DIVIDED_ADJOINT_MPI (replaced by ALLOW_DIVIDED_ADJOINT
521        and ALLOW_USE_MPI) from model/src code and from ECCO_CPPOPTIONS.h.
522    
523    checkpoint64k (2013/07/23)
524    o tools/OAD_support:
525      - avoid the need for file "oadtempflile" in insertTemplateDir.bash
526        and remove it from genmake2.
527    o tools/build_options:
528      - remove MPI_HEADER_FILES_INC setting (no longer used) and comment out
529        MPI_HEADER_FILES list (let genmake2 find the missing headers)
530    o verification/halfpipe_streamice:
531      - change to driving stress formulation; update both Fwd & AD output.
532    o tools/genmake2 and Divided Adjoint with MPI:
533      - remove default setting of MPIINCLUDEDIR from $MPIHOME (always been broken);
534      - only create local ./mpi_headers dir if using MPI and MPIINCLUDEDIR is set;
535      - add new variable (LOCAL_MPI_HEADERS, replace MPI_HEADER_FILES_INC) in
536        Makefile, which is set by genmake2, and check which mpi-headers are needed.
537        Note: need to update adjoint_options/adjoint_diva_mpi accordingly.
538      - update target "CLEAN" (to also remove ./mpi_headers/ dir).
539    o testreport:
540      - changes for Divided Adjoint Run: when file "run_ADM_DIVA" is present,
541        perform additional runs (number of additional runs is "add_DIVA_runs" taken
542        from file run_ADM_DIVA ; should match "nchklev_3" in file "code_ad/tamc.h").
543    o verification/lab_sea (AD test):
544      - change to test Divided Adjoint Run in this set-up (both standard AD test
545        and 2 secondary AD test: noseaice + noseaicedyn); drop the evp AD test.
546    o pkg atm_ & ocn_compon_interf:
547      - remove cpl_earlyExpImpCall=F option (was mainly a hack added for the old
548        staggerTimeStep implementation) and disable (retired) corresponding
549        parameter.
550    o pkg/offline:
551      - comment out unused field-array: ICEM, ConvectCount, hflx[01], icem[01];
552      - add S/R OFFLINE_CHECK to print offline parameter summary
553        and stop if loading a file that is not used;
554      - enable to calculate GMRedi tensor, KPP mixing and convective index
555        when the corresponding file(s) is/are not specified (but pkg is used).
556      - comment out resetting of monitorFreq (to endTime) since it still useful
557        for monitoring CFL numbers and checking offline fields.
558    o OpenAD:
559      - do not define OAD_DEBUG (in tools/adjoint_options/adjoint_oad) to get
560        smaller standard output) and generate new (smaller) output (on baudelaire
561        using gfortran with -ieee) for exp. tutorial_tracer_adjsens
562    o model/src:
563      - call EXTERNAL_FORCING_SURF outside bi,bj loops (in do_oceanic_phys.F),
564        (where external_forcing_adjust was called) and change list of arguments;
565      - merge external_forcing_adjust.F into external_forcing_surf.F
566      - put surface relaxation of SST & SSS in new S/R (forcing_surf_relax.F)
567        which also contains balancing surface relaxation (ALLOW_BALANCE_RELAX,
568        previously in file "balance_relax.F", now removed); remove corresponding
569        arrays in FFIELDS.h.
570      - EXTERNAL_FORCING_SURF is now called when using pkg/offline; implement
571        a hack for getting back surfaceForcingS (loaded from file) when using
572        ALLOW_OLD_VIRTUALFLUX (pkg/dic, in DIC_OPTIONS.h) in offline set-up.
573      - update output of AD test experiment global_ocean.cs32x15.seaice_dynmix
574        (was getting only 11 digits for AD-grad, due to different truncation
575         error in AD code).
576    
577    checkpoint64j (2013/07/04)
578    o pkg/offline:
579      - to enable the use of other features with pkg offline (e.g., obcs),
580        also call S/R DO_OCEANIC_PHYS in offline run - more modifs to come.
581      - comment out "allowFreezing" (now active) in 2 offline testing exp.
582    o pkg/exf ALLOW_RUNOFTEMP
583      - fix sign and make compatible with temp_EvPrRn .NE. UNSET_RL
584      - ahdded RUNOFTEMP test to verification/global_ocean.cs32x15/input.seaice
585      - changes verification/global_ocean.cs32x15/results/output.seaice.txt
586    o pkg/atm_phys:
587      - allows to add some damping on uVel,vVel (strength only function of k).
588    o verification, ad-tests:
589      - reduce length of the simulation for AD test: global_ocean.cs32x15.seaice,
590        global_ocean_ebm and offline_exf_seaice.thsice.
591    o verification/halfpipe_streamice:
592      - found a bug in s/r pkg/streamice/streamice_advect_thickness which caused
593        flux input boundary conditions to be ignored; a fix for this bug changed
594        verification results for forward test.
595      - add adjoint test.
596    o pkg/ptracers:
597      - allow to restart without SOM pickup (resetting SOM to zero).
598    o pkg/gmredi:
599      - New parameterisation for the calculation of K and (GM_PsiX,GM_PsiY) added.
600      - It uses mixing length theory and suppression by steering level effects to
601        calculate a diffusivity used in the Redi tensor (see Bates et al., submitted
602        to JPO, for more details).
603      - It also uses the diffusivity to calculate an eddy induced streamfunction
604        based on a PV closure (rather than a buoyancy closure as in GM).
605      - New files added to pkg/gmredi:
606        gmredi_k3d.F calculates the diffusivity for the Redi tensor and the eddy
607          induced overturning streamfunction (called from gmredi_calc_tensor)
608        gmredi_calc_eigs.F calculates the eigenvalues and eigenvectors required
609          for use in gmredi_k3d
610        gmredi_calc_urms.F calculates the the rms eddy velocity used to calculate
611          the eddy diffusivity
612    
613    checkpoint64i (2013/06/18)
614    o pkg/cheapaml:
615      - take src files from MITgcm_contrib/verification_other/offline_cheapaml/code
616        that enable the use of seaice (pkg/thsice thermo & pkg/seaice dynamics)
617        with pkg/cheapaml.
618    o utils/python: add subpackage for cubed sphere function, first example is
619        simple cs.pcol to plot 2D fields on a map
620    o pkg/streamice:
621      - This is a new package in MITgcm, which solves dynamic equations for ice
622         sheets and ice streams
623      - At the moment it is independent of atmosphere/ocean dynamics, or any
624        other physical packages in MITgcm, even ShelfIce (although it is anticipat-
625        ed that this will change)
626      - There is a new verification exercise that tests it, halfpipe_streamice,
627        evolves a 40x80 km ice stream/ice shelf (at coarse resolution) in a
628        rectangular embayment
629      - halfpipe_streamice is forward-only for now, will have TAF test soon
630      - for questions, email dgoldber@mit.edu
631    o pkg/thsice:
632      - fix filling of snow-precip diagnostic (SIsnwPrc) (left from the removing
633        of snowPrc from common bloc, on May 2nd, thsice_step_fwd.F revision 1.40);
634      - remove diagnostics 'SI_FrcFx' ( now identical to 'SI_Fract' with new
635         call sequence: ice-Thermo(thsice),ice-Dyn,ice-Advect );
636      - allow precip from pkg/cheapaml to make snow over seaice.
637    o pkg/cfc:
638      - move in separated header file (CFC_ATMOS.h) time-serie arrays of Atmos CFC
639      - remove atmos CFC 2-D arrays from common bloc (now local variables)
640      - change some hard-coded constant to run time parameter for reading and
641        and interpolating atmospheric CFC ; keep same default as previously.
642      - more flexible reading of Atmos CFC (number of records no longer hard-coded)
643      - put arguments in standard order: myTime, myIter, myThid
644      - use standard S/R GET_PERIODIC_INTERVAL for time interpolation of
645        atmospheric CFC ; fix for the case myIter < PTRACERS_iter0.
646      - fix calculation of surf tendencys for partial-cell and/or Non-Lin Free-Surf
647      - new routine to print summary of CFC params and check for consistency.
648    o pkg/seaice: add uice/vice to the parameter list of s/r seaice_advdiff,
649      similar to thsice_advdiff.
650      Note that for the B-grid case the routine parameters uc/vc are overwritten.
651    o pkg/cfc:
652      - change time interpolation for atmospheric CFC-11 (now same as for CFC-12);
653        update output (CFC-11) of experiment cfc_example and tutorial_cfc_offline.
654      - fix interpolation of atmphspheric CFC between Sorthern and Northern
655        hemisphere value.
656    o pkg/seaice:
657      - allow to use seaice dynamics without pkg/exf (e.g., using pkg/cheapaml)
658    o pkg/seaice: add Adams-Bashforth2 time discretization for ice dynamics;
659                  so far only for JFNK-solver, turn on with SEAICEuseAB2 = .TRUE.
660      - requires an additional time level that is stored in the pickup
661      - you can start with AB2 from a pickup without this time level with
662        pickupStrictlyMatch = .false.
663    
664    checkpoint64h (2013/05/26)
665    o pkg/cheapaml:
666      - replace one ()**.5 with SQRT + use temp var "cdu = tau/Du" (coare3_flux);
667        affect machine truncation (but exp cheapAML_box still pass with 13 digits).
668      - consistent treatment of uWind,vWind location: assume everywhere in
669        pkg/cheapaml that they are on C-grid (@ uVel,vVel location)
670        (Note: was already the case for Tair,Qair advection);
671        add option (INCONSISTENT_WIND_LOCATION) to recover old results.
672      - compute diabatic forcing only in the interior (excluding overlap regions)
673      - fill in array "Qsw" (for short-wave heating);
674      - add diagnostic for precip ; fill-in diagnostics for cheapAML state vars
675        before any update (consistent with MITgcm state var diagnostics);
676      - cheapaml_fields_load.F & cheapaml_init_varia.F : only fill outer edges if
677        non periodic ; + adjusted for uWind,vWind (C-grid).
678    o pkg/seaice:
679      - remove dependence of pkg/seaice versus pkg/exf (file: pkg/pkg_depend) and
680        add explicitly pkg/exf in experiments that currently use pkg/seaice.
681      - allows to compile pkg/seaice without pkg/exf.
682    o tools/OAD_support:
683      - use a local copy (ourRWCPinBd) to ensure index ourRWCP stays within bounds
684        of array "ourStepOf" in function rvNextAction (revolve.F90).
685    o pkg/aim_compon_interf renamed to pkg/atm_compon_interf
686      - change pkg name (to be used with other atmospheric physics pkg)
687        but by-pass CVS when making the new pkg so that we keep the CVS history.
688    o pkg/offline:
689      - call OFFLINE_FIELDS_LOAD from pkg/offline/offline_init_varia.F
690        (previously called from pkg/dic_surfforcing_init.F)
691    o model/src:
692      - re-order sequence of calls within packages_init_variables.F, using
693        standard order, except for:
694         DIAGNOSTICS_INIT_VARIA and OFFLINE_INIT_VARIA (called @ the top),
695         CTRL_MAP_INI and OBCS_INIT_VARIABLES (called @ the bottom)
696    o new pkg: atm_phys
697      - add entry point and source code (previously in contrib
698          verification_other/atm_gray/code_gray/) for new pkg "atm_phys"
699        (atmospheric physics pkg from P. O'Gorman and T. Schneider, JCl, 2008).
700      - re-order sequence of calls within packages_readparms.F,
701         packages_init_fixed.F and packages_write_pickup.F
702        (but skip packages_init_variables.F because of TAF issues).
703      - update contrib/*/atm_gray/ experiment.
704    o pkg/seaice (ITD code):
705      - simplify and fix the writing of pickup-files for ITD case
706    o pkg/seaice (ITD code):
707      - introduce floe size dependent lateral melt for ITD case;
708      - cleaning (avoid division by zero, change to f77 syntax, remove tabs)
709      - update seaice_itd experiment main output.
710    o pkg/thsice:
711      - remove snowPrc from common block THSICE_FLUX, in THSICE_VARS.h and
712        declared it locally (without bi,bj) in thsice_main.F & aim_do_physics.F;
713        changed accordingly pkg/atm2d.
714    
715    checkpoint64g (2013/05/01)
716    o pkg/exf ALLOW_RUNOFTEMP
717      - if defined,  river and glacier runoff temperature can be read-in from
718        runoftempfile; runoftempfile needs to have same format as runofffile
719    o pkg/thsice (& pkg/bulk_force):
720      - In case Energy-Reference-Level (ERL) is used (temp_EvPrRn=0), account
721        for energy content of Precip + RunOff & Evap (like with pkg/exf).
722      - change computation domain to always be the interior (without overlap).
723      - fix bug (wrong overlap) when using EXF and stressReduction > 0.
724    o verification/tutorial_global_oce_biogeo:
725      - add preliminary OpenAD setup (still has problems)
726    o pkg/seaice:
727      - turn some parameters for choosing the convergence criterion of
728        the inexact Newton method (JFNK) into runtime parameters for convenience
729      - clean up seaice_calc_viscosities.F: remove/retire two options for
730        SEAICetaZmethod (1,2), introduce area weighting for method 3; this changes
731        the results of lab_sea/input because a division has been replaced by
732        a multiplication with the reciprocal (sumNorm)
733      - modify offline_exf_seaice/input.dyn_jfnk/data.seaice to improve
734        convergence of solver (changes results, of course), and to test some
735        new features
736    o model/src:
737      - remove unused (since Aug 2006) S/R SET_WRITE_GLOBAL_PICKUP and its call.
738      - remove unused forcing field "dQdT" and associated parameter "dQdTFile".
739      - move forcing adjustment (balancing surface forcing) in specific S/R
740        where might also be applied exchanges (if needed) to forcing arrays.
741    o pkg/shelfice:
742      - allow to specify the Ice-Shelf mass per unit area (instead of
743        shelficeLoadAnomaly) and do the conversion from one to the other
744      - move loading from file of shelficeLoadAnomaly from SHELFICE_INIT_VARIA
745        to SHELFICE_INIT_FIXED: (a) avoid some TAF recompution issues and
746        (b) will be loaded in time (before calling INI_PRESSURE) in case it is
747        needed in phi0surf for initial pressure calculation when useDynP_inEos_Zc
748      - update isomip experiment forward output (get machine truncation error
749        from conversion shelficeLoadAnomaly -> shelficeMass -> shelficeLoadAnomaly)
750    o verification/offline_exf_seaice:
751      revise data.seaice in input.thermo and input_ad and update results accordingly
752        HO = 0.2, SEAICE_areaLossFormula = 2,
753        SEAICE_growMeltByConv = .TRUE.,
754        SEAICE_doOpenWaterMelt = .TRUE.,
755      Improve consistency with input.thsice and fix the spurious 500m ice corners
756    o verification/global_ocean.cs32x15:
757      - set Energy Reference Level to liq. water @ 0 degC: temp_EvPrRn=0.,
758        in icedyn (thsice+seaice-dyn) test and update output.
759    o verification/offline_exf_seaice:
760      - adjust list of tested variables (with testreport) and update
761        standard test output with better slection of monitored fields.
762    o pkg/cd_code:
763      - swtich off Adams-Bashforth on the 1rst iteration. Update output of
764        experiment lab_sea.hb87
765    o tools/genmake2:
766      - change default makedepend from the system default to tools/xmakedepend:
767        When no makedepend is specified, select tools/xmakedepend it the test pass,
768        otherwise select the system default (if exist and pass the test) or
769        try to build cyrus-makedepend ; stop if none of the 3 works.
770    o pkg/exf & pkg/thsice:
771      - In case Energy-Reference-Level (ERL) is used (temp_EvPrRn=0), account
772        for energy content of Precip + RunOff & Evap. Assumes:
773       1) Rain has same temp as Air.
774       2) Snow has no heat capacity (consistent with seaice & thsice pkgs)
775       3) Run-Off comes at the temp of surface water (with same Cp)
776       4) Evap over ocean is released to the Atmos @ surf-temp (=SST); should be
777        put directly into Latent Heat flux & should use water-vapor heat capacity.
778       5) Evap over snow/seaice (pkg/thsice) assumes constant Lf+Lv (consistent
779        with snow having no Cp) => water vapor is released to Atmos @ 0^oC (=ERL).
780    o pkg/seaice: simplify the use of CPP flags in JFNK-related files
781        (compile when SEAICE_ALLOW_JFNK is defined)
782    o pkg/thsice:
783      - fix oceanic flux diagnostics & timeave (left from new sequence of calls
784        implementation): move THSICE_AVE call after the advection (called directly
785        from thsice_do_advect.F).
786    o verification/global_ocean.90x40x15 and OpenAD:
787      New experiment for OpenAD is identical to the one in input_ad except that
788        multiDimAdvection=.FALSE.,
789      There is still an issue with this.
790    o pkg/thsice:
791      - account for ice velocity (ocean relative velocity) in turbulent heat flux
792        at the base of the ice; update output of global_ocean.cs32x15 (icedyn)
793        and offline_exf_seaice (main test).
794    
795    checkpoint64f (2013/03/31)
796    o verification/OpenAD:
797      - new (smaller, without OAD_DEBUG) output_oadm.txt generated using gfortran.
798    o verification/isomip, pkg/shelfice and OpenAD:
799      - add OpenAD setup to this exp and make shelfice package work with OpenAD
800    o verification/tutorial_global_oce_biogeo:
801      - update AD and TLM output after turning off ALLOW_FE (in DIC_OPTIONS.h)
802    o verification/offline_exf_seaice:
803      - replace adjoint experiment (now similar to fwd input.thermo/ setup).
804    o verification/tutorial_tracer_adjsens, pkg/ptracers and OpenAD:
805      - add OpenAD setup to this exp and make ptracers package work with OpenAD
806    o pkg/seaice/seaice_evp.F:
807       mask the asymmetric contribution of the ice-ocean stress (when
808       the turningAngle is non-zero) over open water to avoid stripes
809       in the EVP-solutions after many EVP-substeps. This does not change
810       the verification experiment (because turningAngle=0 in that experiment),
811       but will affect other EVP solutions with turningAngle.ne.0
812    o verification, AD & TLM output:
813      - new TAF version 2.3.10 (previously 2.3.8) add more parenthesis in multiple
814        additions and multiplications which affect results at machine truncation
815        level. Update few AD output (1D_ocean_ice_column, bottom_ctrl_5x5,
816        lab_sea.noseaicedyn & offline_exf_seaice) and TLM output
817        (1D_ocean_ice_column & tutorial_tracer_adjsens.som81) which had only 12
818        digits of matching.
819    o pkg/seaice:
820       modify lsr-algorithm so that it vectorizes AND converges by using a
821       "zebra" method: split vector loop into two with step size 2; this
822       solves a general convergence problem for the JFNK solver on a vector
823       computer. It has the potential to even improve convergence for
824       non-vector machines, but it does change the results so it is turned
825       off by default. To turn on define CPP-flags SEAICE_VECTORIZE_LSR and
826       SEAICE_VECTORIZE_LSR_ZEBRA in SEAICE_OPTIONS.h
827    
828    checkpoint64e (2013/03/05)
829    o pkg/ecco and several verification experiments:
830       Remove special versions of the_model_main.F, the_main_loop.F, forward_step.F
831       from ecco package, and revert to unified routine in model/src/
832       Adjust verification experiments accordingly, especially gloal_oce_llc90
833       Should conclude long-standing work by Gael to reconsile the_main_loop with
834       ECCO and will enable OpenAD's revolve loop in ECCO setup.
835    o pkg/generic_advdiff:
836      - implement compressible flow method for multi-dim advection (similar to
837        gad_som_advect.F); add new option "GAD_MULTIDIM_COMPRESSIBLE" (since
838        TAF generates many recomputations) to use it; no yet coded with implicit
839        vertical advection.
840      - change experiment advect_cs (new output) and advect_xy (same output)
841        to test compressible flow multi-dim advection.
842    o pkg/generic_advdiff:
843      - fix SOM advection for unusual cases (linear Free-Surf in r*, other
844        cases where linear Free-Surf is not @ k=1, e.g., useShelfIce)
845    o pkg/seaice:
846      - fix bug in the no-slip implementation in seaice_calc_strainrates.F, this
847        bug affects two verification experiments (lab_sea and lab_sea.hb87),
848        recover old (wrong) results by setting noSlipFac = 2. in
849        seaice_calc_strainrates.F;
850      - add another averaging method for etaZ (etaZmethod=3), a mix of 2 and 0
851      - add runtime parameter SEAICE_JFNKepsilon for that finite difference
852        gradient in the Jacobian times vector operation (s/r seaice_jacvec)
853      - fix line search in seaice_jfnk.F (s/r seaice_jfnk_update)
854    o pkg/seaice: reorganize seaice_lsr.F to be able to reuse more code:
855      - new subroutines seaice_lsr_tridiagu/v
856      - introduce loop bounds i/jmin/max to be able to use a restricted
857        additive Schwarz method, but not used for now.
858      - rename SEAICE_CALC_LSR_COEFFS into SEAICE_LSR_CALC_COEFFS
859      - use new subroutines seaice_lsr_tridiagu/v in s/r seaice_preconditioner
860    o OpenAD support
861       Reorganize S/R call for overall time-stepping loop to facilitate
862       OpenAD revolve loop replacement
863       (new S/R main_do_loop.F)
864    o model/src:
865      - add 3-D array 3rd dimension to argument list of S/R ADAMS_BASHFORTH2/3;
866      - pkg/cheapaml: remove local S/R ADAMS2d and use instead standard S/R
867        ADAMS_BASHFORTH2.
868    o pkg/cheapaml:
869      - add new parameter (default=F, same as before) to disable full domain
870        (including land) periodicity in X & Y dir.
871      - new S/R CHEAPAML_COPY_EDGES to copy relaxation field into edges of
872        prognostics field ; merge the 2 S/R cycle_2d_tracer and timestep_2d_tracer
873        into single S/R CHEAPAML_TIMESTEP.
874    
875    checkpoint64d (2013/02/17)
876    o pkg/monitor (angular momentum):
877      - do not add Eta contribution to the total AM if using rigid-lid;
878      - correct for Adams-Bashforth in zonal-wind part (instead of in AM_eta).
879      - horizontal discretisation: compute Zonal wind contribution separately for
880        each component (instead of from cell centered averaged) and use the 4
881        grid-cell corner averaged value of Omega*(R*cos_Phi)^2 in AM_eta part.
882      - Check that AM is conserved with linear dynamics (momAdvection=F and linear
883        FreeSurf) if using vectorInvariant momentum.
884    o model/src (horizontal grid):
885      - move initialisation of all horizontal grid arrays to null value
886        from specific horizontal grid S/R to main S/R INI_GRID;
887      - add 2 new arrays to project model C-grid velocity on to zonal direction
888        (similar to AngleCosC & -AngleSinC but at U and V point location) and
889        compute them in S/R CALC_GRID_ANGLES.
890    o pkg/seaice: replace a hard coded parameter by a runtime parameter
891        SEAICE_JFNK_tolIter
892    o pkg/seaice: introduce a restricted additive Schwarz (RAS) method in
893        preconditioner for JFNK (run LSR into the overlaps as far as possible,
894        i.e OLx/y-2, but overwrite the solution in the overlaps)
895      - extend loop range in seaice_calc_viscosity
896      - add new parameters SEAICE_OLx/y (default = OLx/y-2)
897      - add flexible loop ranges to seaice_preconditioner, seaice_calc_lsr_coeffs
898      - slightly modify loops in tridiagonal solver lsr-preconditioner
899      - by default remove the extra exchange in seaice_preconditioner with a
900        replacement of an undocumented CPP flag by SEAICE_PRECOND_EXTRA_EXCHANGE
901      - modify offline_exf_seaice so that old results without RAS are reproduced
902        for output.dyn_jfnk.txt
903      in seaice_fgmres.F (unrelated to RAS)
904      - add a cpp-flag option for a re-ordered mapping (potentially more
905        efficient), but because this changes the results, turn it off by
906        default
907      - replace the save statement by local common blocks
908    o utils/matlab:
909      - fix tile-offset in rdmnc.m when output was produced using EXCH2.
910      - update cs_grid/bk_line scripts to use load_grid.m (in utils/matlab)
911        instead of local script "load_cs.m".
912    o pkg/seaice:
913      - fix a serious bug in seaice_fgmres.F, s/r seaice_scalprod, connected
914        to the scalarProductMetric and the unrolling. By chance this does not
915        change the verification experiment, because of the particular domain
916        decomposition
917    o pkg/diagnostics:
918      - change default missing_value from UNSET_RL to -999.
919    o pkg/layers: improve vectorization of layers_fluxcalc.F
920      - step 1: split loops, make TatU/V 2D arrays. This alone reduces the cpu
921        time spent in this routine by more than a factor of 3 on an NEC-SX8
922      - step 2: replace search algorithm by a bisection algorithm found in
923        Press et al. Numerical Recipes in Fortran. This algorithm can be
924        vectorized and finds the correct bin in approx. log2(Nlayers) steps.
925        For now, use this algorithm only for TARGET_NEC_SX defined.
926      - moved the search algorithm into a separate subroutine, that is kept
927        within the same file for automatic inlining.
928      - modified catching potential errors
929    o pkg/ecco:
930      - add compile switches ALLOW_SHALLOW_ALTIMETRY and ALLOW_HIGHLAT_ALTIMETRY.
931    o model/src, pkg/autodiff, pkg/ctrl, pkg/grdchk :
932      - modifications for ALLOW_GENTIM2D_CONTROL
933      -- forward_step.F, the_main_loop.F : pass options and arrays for adjoint tapes.
934      -- load_fields_driver.F : add call to CTRL_MAP_GENTIM2D( myTime, myIter, myThid )
935      -- add xx_gentim2d0/1 in ctrl_ad_check_lev1_dir.h checkpoint_lev1_directives.h etc
936      -- use ctrl_swapffields.F (new) instead of exf_SwapFFields.F in ctrl_get_gen.F
937    o model/src:
938      - account for moist thermodynamics in (dry) potential temperature equation;
939        update results of experiments: aim.5l_cs (x2), fizhi-cs (std + aqualev)
940        and cpl_aim+ocn.
941      - also switch to standard compiler (gfortran, was using ifort previously)
942        for fizhi-cs experiments reference output.
943    o pkg/ctrl:
944      - 1st step toward generic time-varying control variable (2D) via CPP option
945        ALLOW_GENTIM2D_CONTROL
946      - note new namelist ctrl_nml_genarr in data.ctrl
947    o verification/global_ocean.cs32x15:
948      - switch off OLD_THSICE_CALL_SEQUENCE (both forward and AD code) to use new
949        thsice calling sequence and update "output.icedyn.txt" output file.
950    o pkg/ptracers:
951      - from Ryan A.: code to allow to restart a tracer at regular time interval
952        specifying a reset frequency and a reset-phase (for each tracers).
953    o pkg/thsice:
954      - implement new sequence of calls for thsice+seaice:
955          previously:   ice-Dyn,ice-Advect,ice-Thermo(thsice)
956          new sequence: ice-Thermo(thsice),ice-Dyn,ice-Advect
957      - allows (with temporary CPP option "#define OLD_THSICE_CALL_SEQUENCE"
958        in CPP_OPTIONS.h) to recover old sequence;
959      - update diagnostics for Intermediate State thsice diagnostics: now filled
960        just before advection (instead of just after advection in old sequence);
961      - update output of experiment offline_exf_seaice (standard test);
962      - in global_ocean.cs32x15 exp., postpone output.icedyn.txt update
963        by setting #define OLD_THSICE_CALL_SEQUENCE in CPP_OPTIONS.h
964    o pkg/aim_v23:
965      - use tiled array for aim_CO2 and surface wind speed for export to coupler;
966      - use standard pkg/mdsio routines to read & write CO2 pickup file;
967      - in-line S/R AIM_AIM2DYN_EXCHANGES in aim_do_physics.F;
968      - Implement new sequence of calls for seaice advection (with thsice and
969        seaice diffusion): do ice advection after ice-Thermodynamic (previously
970        was done before); change aim_do_physics.F (split the bi,bj loops block);
971      - use same CPP option (OLD_THSICE_CALL_SEQUENCE) to recover old sequence;
972    o pkg/thsice:
973      - add a missing EXCH of sIceLoad in thsice_main.F (ocean set-up) for the case
974        where just seaice diffusion is used without seaice-dynamics.
975    
976    checkpoint64c (2013/01/18)
977    o pkg/seaice:
978      - add a parameter JFNKres_tFac that can replace JFNKres_t
979        (= JFNKres_tFac*JFNKresidual before JFNK solver)
980      - add a line search option to the JFNK solver
981      - move update of u/vIce and computation of initial residual into a separate
982        routine (same file); makes the code a little easier to read (?)
983      - the line search requires computation of the residual and for some reason
984        I cannot do the update of u/vIce at the beginning of the Newton loop
985        without changing the results, so we move computation of the new residual
986        also to the end of the Newton loop, even without the line search
987    o pkg/mdsio:
988      - write missing value (corresponding to undefined array value) to meta files;
989        skip this if missing value is one (UNSET_RL would be a better value for the
990        case of undefined missing value but it's current the default missing-value);
991        Also update mdsio_read_meta.F (reading timeInterval & missing-value).
992    o pkg/exf & thsice:
993      - for diagnostics purpose, fill-up and update Qsw array (+ fill the
994        diagnostics) even when SHORTWAVE_HEATING is #undef;
995    o verification/cfc_example:
996      - turn on pkg/layers with pkg/diagnostics (to test pkg/layers and to
997        illustrate how to use it).
998    o verification/offline_exf_seaice:
999      in input: add SEAICErestoreUnderIce=.TRUE., and reduce size of forcing
1000        files to only one time-record.
1001      in input.thermo: narrow the 2 bands of low initial ice-concentration near
1002        N & S edges; switch on SEAICErestoreUnderIce=T; use pkg/diagnostics for
1003        snapshot output; same mcPheePiston value as in thsice with
1004        surf-current=0.2m/s.
1005      in input.thsice: similar set-up as in input.thermo (channel with same seaice
1006        initial conditions).
1007    o verification/cfc_example:
1008      - update file "data" with more standard choice (default rotationPeriod,
1009        exactConserv=T, reduce ivdc_kappa to 10, remove multiDimAdvection=F,
1010        set deltaTFreeSurf to deltaTtracer) and update the output.
1011    o pkg/layers:
1012      - fix bolus part so that it compiles with #undef GM_BOLUS_ADVEC;
1013      - ensure that "layers_bolus" is switched to False when useGMRedi=False.
1014    o verification/offline_exf_seaice:
1015      - set all {field}period to zero for constant-in-time forcing (not tested
1016        anywhere else).
1017    o verification/offline_exf_seaice:
1018      - dyn_lsr  : use pkg/seaice S/R (instead of pkg/thsice) to advect sea-ice;
1019      - dyn_jfnk : use pkg/thsice S/R (instead of pkg/seaice) to advect sea-ice.
1020    o model/src:
1021      - implement Finite-Volume method for (hydrostatic) presure gradient
1022        from S.-J. Lin (QJRMS 1997), for atmosphere using sigma-coordinate.
1023    o pkg/seaice: implement EVP* by Lemieux et al. (2012).
1024      - In order to be compatible with the default EVP code, this requires changing
1025        the EVP code around a little; and because any small change immediately
1026        breaks the lab_sea.hb87 verification experiment, the reference output is
1027        updated two times (each time the remaining aggrement was only 2 digits):
1028        - after replacing 1/dt by 1*recip_dt with a precomputed recip_dt
1029        - after replacing 1/(1+0.5*dt/tau) by a/(a+1), with a=2*tau/dt
1030        The adjoint test lab_sea.evp also needed to be updated.
1031      - Turn on EVP* by setting SEAICE_deltaTevp as before, and setting
1032        SEAICEuseEVPstar=.true.; for EVP* SEAICE_deltaTevp does not need to be
1033        a factor of SEAICE_deltaTdyn, and you can set the number of EVP steps
1034        explicitly with SEAICEnEVPstarSteps (thereby overriding the default of
1035        INT(SEAICE_deltaTdyn/SEAICE_deltaTevp)). Controlling EVP* is deliberately
1036        kept obscure, because I need to test it a little more.
1037    o pkg/cheapaml:
1038      - fix few incorrect type (_RL/_RS) in subroutine calls.
1039    o pkg/seaice:
1040      - new S/R SEAICE_MAP_RS2VEC (similar to SEAICE_MAP2VEC) to map _RS arrays
1041        to _RL vector; this fixes JFNK code when compiling with "-use_r4" option.
1042    o model/src:
1043      - add a warning if using select_rStar=2 with nonlinFreeSurf <> 4;
1044        change (in input_ad*/data) select_rStar from 2 to 1 for AD verification
1045        experiments global_ocean.cs32x15 & tutorial_tracer_adjsens (+ update output)
1046    o pkg/cheapaml:
1047      - replace "273.1 _d 0" by celsius2K in pkg/cheapaml/cheapaml.F and
1048        update output of experiment cheapAML_box.
1049      - store in CHEAPAML.h coeffs ssq[0:2] for saturation specific humidity,
1050        and set them only in one place (cheapaml_readparms.F).
1051      - replace "273.16 _d 0" by celsius2K & replace "3.14159 _d 0" by constant "PI"
1052      - remove re-setting of main-model parameter "celsius2K" (in cheapaml_readparms)
1053        and re-setting of cheapAML params "lath" & "p0" (in cheapaml_init_varia).
1054    o model/src/the_main_loop.F:
1055      - fix revision 129 : need both ALLOW_ECCO and ALLOW_ECCO_EVOLUTION.
1056    o pkg/seaice:
1057      - remove legacy branch code.
1058      - retire SEAICE_GROWTH_LEGACY and SEAICE_CAP_HEFF accordingly.
1059    o verification/*/code*/SEAICE_OPTIONS.h:
1060      - remove documentation for retired CPP flags (SEAICE_GROWTH_LEGACY,
1061        SEAICE_CAP_HEFF).
1062    o pkg/cheapaml:
1063      - use standard routine (S/R GET_PERIODIC_INTERVAL) to decide when it is time
1064        to load new forcing fields.
1065      - add missing "_d 0" where it's needed; + some editing (improve indentation).
1066      - remove switch to "-r8" compiler option (no longer needed) in verification
1067        cheapAML_box, keep same output (small trucation error differences).
1068    o verification/offline_exf_seaice:
1069      - add thermodynamics only test.
1070    o verification/cheapAML_box:
1071      - split the domain in 8 (2x4) tiles; add MPI and multi-threaded test;
1072        keep same output (same 14 digits for cg2d).
1073      - switch on "-r8" compiler option (some numerical values are missing
1074        the "_d 0") and update output (only 6 digits for cg2d were preserved).
1075    
1076    checkpoint64b (2012/12/24)
1077    o pkg/cheapaml:
1078      - remove un-used variables (Qnet,EmPmR) from pickup files.
1079      - store tendency of advected variables into cheapaml pickup file
1080        and fix the AB-2 restart.
1081    o verification/offline_exf_seaice and lab_sea adjoint:
1082      - switch to new code (#undef SEAICE_GROWTH_LEGACY).
1083      - switch to 4 time steps in offline, consistent with lab_sea.
1084      - match parameters from SEAICE_GROWTH_LEGACY branch in data.seaice.
1085      - update results after change of experiment seaice.
1086    o pkg/seaice:
1087      - remove option SEAICE_MULTICATEGORY; has been replaced with run-time
1088        parameter SEAICE_multDim. Issue a warning if SEAICE_MULTICATEGORY is
1089        still defined since SEAICE_multDim needs to be set to MULTDIM value (from
1090        SEAICE_SIZE.h) to recover previous #define SEAICE_MULTICATEGORY default.
1091    o model/src:
1092      - add run-time parameter to select CG2D solver minimum-residual solution
1093        (in case of a poor convergence).
1094    o pkg/seaice/seaice_lsr.F
1095      - move calculation of matrix coefficients into new
1096        S/R SEAICE_CALC_LSR_COEFFS; for now this routine remains in the same
1097        file; the main purpose of this change is to be able to reuse the code
1098        in S/R SEAICE_PRECONDITIONER
1099      - modify the computation of the residual so that the mass of sea-ice
1100        is not used twice; this simplifies the calculations, but since
1101        the residual is never used except when LSR_mixIniGuess.ge.4---and this is
1102        not tested in testreport---this does not affect the testreport results.
1103    o verification/seaice_obcs:
1104      - disable SEAICE_GROWTH_LEGACY; reset input files to match those of
1105        verification/lab_sea/input.salt_plume; changes results/output.txt*
1106    o model/src:
1107      - adapt quasi-hydrostatic formulation to work with p or p* coordinate.
1108    o pkg/seaice:
1109      - improve description of parameters in seaice_fgmres.F and start
1110        cleaning up the code
1111      - change name of SCALPROD to SEAICE_SCALPROD and modify meaning of
1112        second argument
1113      - add a metric based on grid cell area to SEAICE_SCALPROD; update
1114        results of offline_exf_seaice.dyn_jfnk
1115      - compute initial residual norm in seaice_jfnk based on SEAICE_SCALPROD
1116    o pkg/aim_v23:
1117      - fix an other bug in dissipation heating (grid-cell area was missing).
1118    o model/src + pkg/seaice:
1119      - add global (multi-tile) linear solver for pair of tri-diagonal system
1120        along X and Y lines, respectively for U and V component.
1121        Note: 1) MPI and cube-exchange not yet coded.
1122            2) probably not accurate for poorly conditioned / large size problem.
1123      - add option for SEAICE_LSR to use global (multi-tile) tri-diagonal solver;
1124        default: not compiled and not used.
1125    o pkg/seaice:
1126      - first attempt at a multi-threaded fgmres solver for the JFNK solver:
1127        introduce bi/bj loops and use global_sum_tile_rl instead of
1128        mpi_allreduce in seaice_fgmres.F
1129      - improve diagnostics output for fgmres solver (seaice_fgmres.F)
1130      - replace a few unnecessary goto statements by if-blocks  (seaice_fgmres.F)
1131      - add a verification experiment for JFNK in offline_exf_seaice
1132    o verification:
1133      - change (for now, only fwd test) offline_exf_seaice experiment:
1134        use a re-entrant channel with idealized coastline (trapezoidal shape)
1135        at southern boundary to explore seaice dynamics and thermodynamics
1136        with simple forcing. Main set-up has dynamics+thermo and SST relaxation;
1137        secondary test (input.thsice) use thermodynamics only with SST relaxation.
1138      - add seaice-dynamics only secondary test using LSR and pkg/thsice advection.
1139    o pkg/exf:
1140      - disable "sstExtrapol" when Nr=1
1141    o verification:
1142      - add new experiment "cheapAML_box" (simple 1 layer set-up from Bruno Deremble)
1143        to test pkg/cheapaml.
1144    o pkg/aim_v23 & pkg/shap_filt:
1145      - fix dissipation heating (erroneous gravity multiplication factor).
1146    o pkg/seaice:
1147      - remove unused field pressPre from jfnk solver
1148      - rename two subroutines in seaice_preconditioner.F
1149    o eesupp/src:
1150       - S/R MDSFINDUNIT avoids reserved unit numbers (scrUnit1, eeDataUnit ...)
1151    o pkg/seaice/seaice_preconditioner.F: fix preconditioner once again
1152       - remove wrong parts of the rhs and the lhs (were in there
1153         because I did not understand the concept of this preconditioner)
1154       - add an exchange between u- and v-sweep. This increases communication
1155         by a factor of two but improves the convergence of jfnk. Ideally,
1156         one would like the u- and v-sweep to be independent. So far within
1157         undocumented ifdefs
1158       - reorganize the extra computations for printing the residuals
1159    o tools/genmake2:
1160      - comment out the "mpif.h" include in NetCDF test programm (for MPI built)
1161        since it's not necessary (and was preventing to use MNC in some cases).
1162    
1163    checkpoint64a (2012/11/16)
1164    o pkg/autodiff:
1165      - improve pkg-internal logical parameter switch (inAd/inFwd mode) so that
1166        autodiff_readparms.F no longer depends on calling order (within
1167        packages_readparms.F) and no longer requires to include ${PKG}_PARMS.h):
1168        rename param turnFreeDriftInAdMode to SEAICEuseFREEDRIFTswitchInAd
1169        and change param SEAICEuseDYNAMICSinAdMode to SEAICEuseDYNAMICSswitchInAd.
1170    o pkg/obcs:
1171      - adding tidal velocity forcing capability to obcs
1172        for usage example, see verification/seaice_obcs/input.tides
1173    o pkg/seaice:
1174      - turn the LSR-relaxation parameters WFAU/V into runtime parameters
1175        SEAICE_LSRrelaxU/V
1176      - introduce runtime parameter SEAICEetaZmethod (=0 by default)
1177    o pkg/aim_v23:
1178      - implement heating from friction (bottom friction and stratospheric drag).
1179    o pkg/shap_filt:
1180      - fix diagnostic "SHAP_dKE" (was 2 time smaller); implement heating from
1181        dissipation but only for Shap_funct=2, active when addFrictionHeating=T.
1182    o model/src:
1183      - move AddMass common block from DYNVARS.h to FFIELDS.h; allow to read-in
1184        time-constant addMass field from file (addMassFile);
1185      - support for heating due to friction (and Kinetic Energy dissipation):
1186        add option, run-time switch and 3-D field array + support code ; each pkg
1187        or S/R can add heating contribution (if there is a sink of KE); the sum is
1188        accounted for as a Temperature tendency term (EXTERNAL_FORCING_T).
1189    o pkg/seaice:
1190      - complete merge of ITD code into seaice_growth.F
1191        from MITgcm_contrib/torge/itd/code/
1192        no verification so far, but Torge Martin tested
1193        "1-D test case and Beaufort set up;
1194        deliver okay results after 1 model year."
1195      - complete merge of SEAICE_SIZE.h into all relevant routines
1196      - move computation of eta at Z-points into calc_viscosities
1197        + introduce global field etaZ
1198        + add different methods for computing etaZ, for now the old
1199          method (simple averages of eta to Z-points) is hardwired
1200        + replace etaMeanZ by etaZ in seaice_lsr, seaice_calc_residual,
1201          seaice_preconditioner
1202      - simplify computations for SEAICE_ZETA_SMOOTHREG
1203      - seaice_preconditioner:
1204        + replace one remaining press by pressLoc (mistake)
1205        + adjust printing of residuals
1206      - improve I/O of diagnostics of JFNK in seaice_jfnk.F:
1207        + add (SEAICE.h) and rename some counters (initiliased in
1208          seaice_init_fixed.F)
1209        + add _BEGIN/END_MASTER (myThid)  around print statements
1210        + print total number of iterations and failures over SEAICE_monFreq
1211          interval to STDOUT
1212      - move control over output-messages by fgmres to seaice_jfnk to save
1213        some operations
1214      - move resetting initial guess for fgmres outside of seaice_fgmres_driver
1215        in order to make restarts with sol .ne. zero (fgmres with restarts)
1216        (seaice_jfnk.F, seaice_fgmres.F)
1217      - seaice_calc_l/rhs.F: replace maskW/S by maskInW/S; this fixes
1218        a serious convergence problem when open boundaries are involved
1219    o pkg/ggl90: fix computation of control volumes for the case of
1220      ALLOW_GGL90_HORIZDIFF (probably not used very often): move control volumes
1221      up half a grid cell from C-centered to W-centered (pointed out by C. Eden)
1222    o pkg/seaice: simplify seaice_evp by avoiding use of extra fields u/vIceC
1223    o pkg/autodiff
1224      - Add inAdMode switch for SEAICEuseDYNAMICS:
1225        SEAICEuseDYNAMICSinAdMode
1226        (extend logic in ADAUTODIFF_INADMODE_SET)
1227    o pkg/seaice
1228      - Step 1 of merging ice-thickness distribution (ITD) code from
1229        MITgcm_contrib/torge/itd/ (author: Torge Martin)
1230        The code implements concept laid out in Thorndike et al. (1975);
1231        code is enabled via CPP flag SEAICE_ITD
1232        nITD (in SEAICE_SIZE.h) defines number of ice thickness categories;
1233        code is not complete yet!!
1234      - SEAICE_SIZE.h now included in almost all seaice routines
1235    o verification (using seaice):
1236      - switch back seaice-dynamics (+ lower SOLV_MAX_ITERS) in ADM exp.
1237        global_ocean.cs32x15.seaice ; update results.
1238      - compile B-grid dynamics in FW test exp 1D_ocean_ice_column ;
1239      - compile C-grid dynamics with #define SEAICE_ALLOW_JFNK in FW test exp
1240        offline_exf_seaice (previously compiling B-grid).
1241    o pkg/exf:
1242      - fix some STOP conditions in exf_check.F (from Aug 28, modifs did not allow
1243        to specify neither just 1 comp of wind or wind-stress, nor no surface momentum
1244        forcing): just replace CPP option ALLOW_ATM_WIND with run-time param useAtmWind.
1245    o pkg/layers (adjust changes from Sept 19):
1246      - do snap-shot output and fill diagnostics from inside iLa loop (layers_calc.F)
1247        this allows to remove "layers_maxNum" dimension from all layers arrays.
1248    o pkg/layers (adjust changes from Sept 19):
1249      - remove ALLOW_LAYERS_OUTPUT ; fix snap-shot and time-ave output ;
1250      - snap-shot extended to all type of layers (not just the 1rst type);
1251      - remove layers variables when corresponding CPP option is undef.
1252    o pkg/layers:
1253      - rename pkg/layers variable and add new output (layer exist & un-weighted
1254        velocity in layer)
1255    o pkg/seaice:
1256      - simplify (?) ocean-drag coefficent computations by using
1257        the same routine in all three solvers (saves some code lines)
1258      - remove global fields DRAGA and DRAGS from C-grid code and
1259        declare them locally in lsr.F (the only place where they are
1260        still used)
1261      - update AD output of lab_sea.evp (very sensitive anyway).
1262  o pkg/seaice: add Jacobian-free Newton Krylov solver for ice dynamics  o pkg/seaice: add Jacobian-free Newton Krylov solver for ice dynamics
1263    (Lemieux et al. 2010, 2012). Turn on with the usual SEAICE_ALLOW_JFNK    (Lemieux et al. 2010, 2012). Turn on with the usual SEAICE_ALLOW_JFNK
1264    and SEAICEuseJFNK=.true. A few things to note:    and SEAICEuseJFNK=.true. A few things to note:
# Line 12  o pkg/seaice: add Jacobian-free Newton K Line 1267  o pkg/seaice: add Jacobian-free Newton K
1267      orthogonalization method. Needs to be replaced. Original code      orthogonalization method. Needs to be replaced. Original code
1268      from J.-F. Lemieux      from J.-F. Lemieux
1269    - preconditioner for FGMRES is a stripped down version of LSOR    - preconditioner for FGMRES is a stripped down version of LSOR
1270    - SOLV_MAX_ITERS is now used for LSOR as a solver and as a    - SOLV_MAX_ITERS is now used for LSOR as a solver and as a
1271      preconditioner. For the preconditioner, the default is set to 10.      preconditioner. For the preconditioner, the default is set to 10.
1272    - Jacobian times vector is computed with finite differences    - Jacobian times vector is computed with finite differences
1273    - marginally related to JFNK-solver: add a smooth regularization for    - marginally related to JFNK-solver: add a smooth regularization for

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