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revision 1.1818 by gforget, Tue Feb 5 15:02:34 2013 UTC revision 1.1912 by jmc, Wed Aug 14 21:16:35 2013 UTC
# Line 4  $Name$ Line 4  $Name$
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7  o pkg/ecco :  o pkg/diagnostics:
8      - add a parameter to track the status of pkg/diagnostics activation;
9        this replace/extend the use of logical param "settingDiags" (to check
10        when adding diag to the list) to also check any DIAGNOSTICS_[]FILL* call.
11        New S/R to print error message and stop when pkgStatus is not right.
12      - to try: add a warning when "data.diagnostics" exist but useDiagnostics=F.
13    
14    checkpoint64m (2013/08/13)
15    o model/inc:
16      - move FCORI_MACROS.h from PARAMS(_MACROS).h to GRID_MACROS.h (left from
17        8 yrs ago modif when Coriolis arrays were moved from PARAMS.h to GRID.h)
18    o pkg/kpp & aim_v23:
19      - only call DIAGNOSTICS_FILL when useDiagnostics=TRUE.
20    o pkg/seaice:
21      - restore (last time on 2011/12/24) ability to compile pkg/seaice with
22        undefined pkg/exf ALLOW_ATM_TEMP or ALLOW_RUNOFF CPP-options.
23      - only call DIAGNOSTICS_FILL when useDiagnostics=TRUE.
24    o eesupp/src:
25      - fix check for overlap-size argument (myOLn.GT.MAX_OLY_EXCH)
26        in exch1_rx[_ad].template (thanks to Francois Lefeuvre report).
27    o switch to TAF version-2:
28      - add flow directives to "freeze" naming convention for ad-routines that
29        are used in I/O routines of adjoint state and associated common blocks
30        that are used in adcommon.h (backward compatible with version-1)
31      - update all ad-optfiles (in tools/adjoint_options + few local to some
32        verification exp) to switch to latest TAF version (currently 2.5.5);
33        merge "*_mpi" adoptfiles into the corresponding non-mpi (but commented
34        out except for diva).
35      - the major change with TAF version-2 is that both the differentiated
36        routines and the forward routines (new) are returned as part of the TAF
37        output source code. Update genmake2 accordingly.
38      - new output for AD experiment tutorial_global_oce_biogeo (better AD gradient
39        with version-2 when compared to TLM or FWD gradient); other experiments
40        output show minor changes (machine truncation level); update the few AD &
41        TLM output with 12 matching digits only (some prior to version-2 switch).
42    
43    checkpoint64l (2013/08/05)
44    o model/src:
45      - in dynamics.F, skip the call to CALC_VISCOSITY if momViscosity=F
46      - main_do_loop.F: no longer includes additional (AUTODIFF) header files
47        when using TAF but only if using OpenAD.
48    o pkg/mom_common+fluxform+vecinv:
49      - always set horiz. viscosity arrays to background value before calling
50        MOM_CALC_VISC (in MOM_FLUXFORM & MOM_VECINV) and call S/R MOM_CALC_VISC
51        only when using variable horiz. viscosity (useVariableVisc=T);
52      - simplify mom_vecinv.F (only 1 block for momViscosity).
53    o pkg/mom_common: variable horiz. viscosity in NH code
54      - move horiz-viscosity 3-D arrays viscAh_W & viscA4_W (used in calc_gw.F)
55        from model/inc/NH_VARS.h to pkg/mom_common/MOM_VISC.h
56      - store in common block (in MOM_VISC.h) logical parameters: useHarmonicVisc,
57        useBiharmonicVisc & useVariableVisc.
58      - fix old bug (already in 1rst implementation of variable horizontal viscosity
59        in calc_gw.F, version 1.27, 2006/06/20):
60        horizontal bi-harmonic viscosity in gW was missing when wiscA4W=0
61        even if variable bi-harmonic viscosity (e.g., viscA4Grid) was non-zero.
62      - change background horiz viscosity in vertical momentum (gW) to always be
63        viscAhW,viscA4W (instead of switching to viscAhD, viscA4D when using
64        any type of variable viscosity, e.g., viscAh/4Grid)
65      - change default value of viscAhW,viscA4W to viscAhD,viscA4D (instead of
66        viscAh,viscA4) which default to viscAh,viscA4 :  this avoid missing
67        horiz. viscosity in W eq when just setting viscAhD/Z,viscA4D/Z (since
68        default viscAh,viscA4 is zero).
69    o model/src:
70      - extend length of drC & recip_drC from Nr to Nr+1.
71    o Divided Adjoint (DIVA) with MPI:
72      - genmake2: do not create local ./mpi_headers dir when no file to copy into.
73      - remove option ALLOW_DIVIDED_ADJOINT_MPI (replaced by ALLOW_DIVIDED_ADJOINT
74        and ALLOW_USE_MPI) from model/src code and from ECCO_CPPOPTIONS.h.
75    
76    checkpoint64k (2013/07/23)
77    o tools/OAD_support:
78      - avoid the need for file "oadtempflile" in insertTemplateDir.bash
79        and remove it from genmake2.
80    o tools/build_options:
81      - remove MPI_HEADER_FILES_INC setting (no longer used) and comment out
82        MPI_HEADER_FILES list (let genmake2 find the missing headers)
83    o verification/halfpipe_streamice:
84      - change to driving stress formulation; update both Fwd & AD output.
85    o tools/genmake2 and Divided Adjoint with MPI:
86      - remove default setting of MPIINCLUDEDIR from $MPIHOME (always been broken);
87      - only create local ./mpi_headers dir if using MPI and MPIINCLUDEDIR is set;
88      - add new variable (LOCAL_MPI_HEADERS, replace MPI_HEADER_FILES_INC) in
89        Makefile, which is set by genmake2, and check which mpi-headers are needed.
90        Note: need to update adjoint_options/adjoint_diva_mpi accordingly.
91      - update target "CLEAN" (to also remove ./mpi_headers/ dir).
92    o testreport:
93      - changes for Divided Adjoint Run: when file "run_ADM_DIVA" is present,
94        perform additional runs (number of additional runs is "add_DIVA_runs" taken
95        from file run_ADM_DIVA ; should match "nchklev_3" in file "code_ad/tamc.h").
96    o verification/lab_sea (AD test):
97      - change to test Divided Adjoint Run in this set-up (both standard AD test
98        and 2 secondary AD test: noseaice + noseaicedyn); drop the evp AD test.
99    o pkg atm_ & ocn_compon_interf:
100      - remove cpl_earlyExpImpCall=F option (was mainly a hack added for the old
101        staggerTimeStep implementation) and disable (retired) corresponding
102        parameter.
103    o pkg/offline:
104      - comment out unused field-array: ICEM, ConvectCount, hflx[01], icem[01];
105      - add S/R OFFLINE_CHECK to print offline parameter summary
106        and stop if loading a file that is not used;
107      - enable to calculate GMRedi tensor, KPP mixing and convective index
108        when the corresponding file(s) is/are not specified (but pkg is used).
109      - comment out resetting of monitorFreq (to endTime) since it still useful
110        for monitoring CFL numbers and checking offline fields.
111    o OpenAD:
112      - do not define OAD_DEBUG (in tools/adjoint_options/adjoint_oad) to get
113        smaller standard output) and generate new (smaller) output (on baudelaire
114        using gfortran with -ieee) for exp. tutorial_tracer_adjsens
115    o model/src:
116      - call EXTERNAL_FORCING_SURF outside bi,bj loops (in do_oceanic_phys.F),
117        (where external_forcing_adjust was called) and change list of arguments;
118      - merge external_forcing_adjust.F into external_forcing_surf.F
119      - put surface relaxation of SST & SSS in new S/R (forcing_surf_relax.F)
120        which also contains balancing surface relaxation (ALLOW_BALANCE_RELAX,
121        previously in file "balance_relax.F", now removed); remove corresponding
122        arrays in FFIELDS.h.
123      - EXTERNAL_FORCING_SURF is now called when using pkg/offline; implement
124        a hack for getting back surfaceForcingS (loaded from file) when using
125        ALLOW_OLD_VIRTUALFLUX (pkg/dic, in DIC_OPTIONS.h) in offline set-up.
126      - update output of AD test experiment global_ocean.cs32x15.seaice_dynmix
127        (was getting only 11 digits for AD-grad, due to different truncation
128         error in AD code).
129    
130    checkpoint64j (2013/07/04)
131    o pkg/offline:
132      - to enable the use of other features with pkg offline (e.g., obcs),
133        also call S/R DO_OCEANIC_PHYS in offline run - more modifs to come.
134      - comment out "allowFreezing" (now active) in 2 offline testing exp.
135    o pkg/exf ALLOW_RUNOFTEMP
136      - fix sign and make compatible with temp_EvPrRn .NE. UNSET_RL
137      - ahdded RUNOFTEMP test to verification/global_ocean.cs32x15/input.seaice
138      - changes verification/global_ocean.cs32x15/results/output.seaice.txt
139    o pkg/atm_phys:
140      - allows to add some damping on uVel,vVel (strength only function of k).
141    o verification, ad-tests:
142      - reduce length of the simulation for AD test: global_ocean.cs32x15.seaice,
143        global_ocean_ebm and offline_exf_seaice.thsice.
144    o verification/halfpipe_streamice:
145      - found a bug in s/r pkg/streamice/streamice_advect_thickness which caused
146        flux input boundary conditions to be ignored; a fix for this bug changed
147        verification results for forward test.
148      - add adjoint test.
149    o pkg/ptracers:
150      - allow to restart without SOM pickup (resetting SOM to zero).
151    o pkg/gmredi:
152      - New parameterisation for the calculation of K and (GM_PsiX,GM_PsiY) added.
153      - It uses mixing length theory and suppression by steering level effects to
154        calculate a diffusivity used in the Redi tensor (see Bates et al., submitted
155        to JPO, for more details).
156      - It also uses the diffusivity to calculate an eddy induced streamfunction
157        based on a PV closure (rather than a buoyancy closure as in GM).
158      - New files added to pkg/gmredi:
159        gmredi_k3d.F calculates the diffusivity for the Redi tensor and the eddy
160          induced overturning streamfunction (called from gmredi_calc_tensor)
161        gmredi_calc_eigs.F calculates the eigenvalues and eigenvectors required
162          for use in gmredi_k3d
163        gmredi_calc_urms.F calculates the the rms eddy velocity used to calculate
164          the eddy diffusivity
165    
166    checkpoint64i (2013/06/18)
167    o pkg/cheapaml:
168      - take src files from MITgcm_contrib/verification_other/offline_cheapaml/code
169        that enable the use of seaice (pkg/thsice thermo & pkg/seaice dynamics)
170        with pkg/cheapaml.
171    o utils/python: add subpackage for cubed sphere function, first example is
172        simple cs.pcol to plot 2D fields on a map
173    o pkg/streamice:
174      - This is a new package in MITgcm, which solves dynamic equations for ice
175         sheets and ice streams
176      - At the moment it is independent of atmosphere/ocean dynamics, or any
177        other physical packages in MITgcm, even ShelfIce (although it is anticipat-
178        ed that this will change)
179      - There is a new verification exercise that tests it, halfpipe_streamice,
180        evolves a 40x80 km ice stream/ice shelf (at coarse resolution) in a
181        rectangular embayment
182      - halfpipe_streamice is forward-only for now, will have TAF test soon
183      - for questions, email dgoldber@mit.edu
184    o pkg/thsice:
185      - fix filling of snow-precip diagnostic (SIsnwPrc) (left from the removing
186        of snowPrc from common bloc, on May 2nd, thsice_step_fwd.F revision 1.40);
187      - remove diagnostics 'SI_FrcFx' ( now identical to 'SI_Fract' with new
188         call sequence: ice-Thermo(thsice),ice-Dyn,ice-Advect );
189      - allow precip from pkg/cheapaml to make snow over seaice.
190    o pkg/cfc:
191      - move in separated header file (CFC_ATMOS.h) time-serie arrays of Atmos CFC
192      - remove atmos CFC 2-D arrays from common bloc (now local variables)
193      - change some hard-coded constant to run time parameter for reading and
194        and interpolating atmospheric CFC ; keep same default as previously.
195      - more flexible reading of Atmos CFC (number of records no longer hard-coded)
196      - put arguments in standard order: myTime, myIter, myThid
197      - use standard S/R GET_PERIODIC_INTERVAL for time interpolation of
198        atmospheric CFC ; fix for the case myIter < PTRACERS_iter0.
199      - fix calculation of surf tendencys for partial-cell and/or Non-Lin Free-Surf
200      - new routine to print summary of CFC params and check for consistency.
201    o pkg/seaice: add uice/vice to the parameter list of s/r seaice_advdiff,
202      similar to thsice_advdiff.
203      Note that for the B-grid case the routine parameters uc/vc are overwritten.
204    o pkg/cfc:
205      - change time interpolation for atmospheric CFC-11 (now same as for CFC-12);
206        update output (CFC-11) of experiment cfc_example and tutorial_cfc_offline.
207      - fix interpolation of atmphspheric CFC between Sorthern and Northern
208        hemisphere value.
209    o pkg/seaice:
210      - allow to use seaice dynamics without pkg/exf (e.g., using pkg/cheapaml)
211    o pkg/seaice: add Adams-Bashforth2 time discretization for ice dynamics;
212                  so far only for JFNK-solver, turn on with SEAICEuseAB2 = .TRUE.
213      - requires an additional time level that is stored in the pickup
214      - you can start with AB2 from a pickup without this time level with
215        pickupStrictlyMatch = .false.
216    
217    checkpoint64h (2013/05/26)
218    o pkg/cheapaml:
219      - replace one ()**.5 with SQRT + use temp var "cdu = tau/Du" (coare3_flux);
220        affect machine truncation (but exp cheapAML_box still pass with 13 digits).
221      - consistent treatment of uWind,vWind location: assume everywhere in
222        pkg/cheapaml that they are on C-grid (@ uVel,vVel location)
223        (Note: was already the case for Tair,Qair advection);
224        add option (INCONSISTENT_WIND_LOCATION) to recover old results.
225      - compute diabatic forcing only in the interior (excluding overlap regions)
226      - fill in array "Qsw" (for short-wave heating);
227      - add diagnostic for precip ; fill-in diagnostics for cheapAML state vars
228        before any update (consistent with MITgcm state var diagnostics);
229      - cheapaml_fields_load.F & cheapaml_init_varia.F : only fill outer edges if
230        non periodic ; + adjusted for uWind,vWind (C-grid).
231    o pkg/seaice:
232      - remove dependence of pkg/seaice versus pkg/exf (file: pkg/pkg_depend) and
233        add explicitly pkg/exf in experiments that currently use pkg/seaice.
234      - allows to compile pkg/seaice without pkg/exf.
235    o tools/OAD_support:
236      - use a local copy (ourRWCPinBd) to ensure index ourRWCP stays within bounds
237        of array "ourStepOf" in function rvNextAction (revolve.F90).
238    o pkg/aim_compon_interf renamed to pkg/atm_compon_interf
239      - change pkg name (to be used with other atmospheric physics pkg)
240        but by-pass CVS when making the new pkg so that we keep the CVS history.
241    o pkg/offline:
242      - call OFFLINE_FIELDS_LOAD from pkg/offline/offline_init_varia.F
243        (previously called from pkg/dic_surfforcing_init.F)
244    o model/src:
245      - re-order sequence of calls within packages_init_variables.F, using
246        standard order, except for:
247         DIAGNOSTICS_INIT_VARIA and OFFLINE_INIT_VARIA (called @ the top),
248         CTRL_MAP_INI and OBCS_INIT_VARIABLES (called @ the bottom)
249    o new pkg: atm_phys
250      - add entry point and source code (previously in contrib
251          verification_other/atm_gray/code_gray/) for new pkg "atm_phys"
252        (atmospheric physics pkg from P. O'Gorman and T. Schneider, JCl, 2008).
253      - re-order sequence of calls within packages_readparms.F,
254         packages_init_fixed.F and packages_write_pickup.F
255        (but skip packages_init_variables.F because of TAF issues).
256      - update contrib/*/atm_gray/ experiment.
257    o pkg/seaice (ITD code):
258      - simplify and fix the writing of pickup-files for ITD case
259    o pkg/seaice (ITD code):
260      - introduce floe size dependent lateral melt for ITD case;
261      - cleaning (avoid division by zero, change to f77 syntax, remove tabs)
262      - update seaice_itd experiment main output.
263    o pkg/thsice:
264      - remove snowPrc from common block THSICE_FLUX, in THSICE_VARS.h and
265        declared it locally (without bi,bj) in thsice_main.F & aim_do_physics.F;
266        changed accordingly pkg/atm2d.
267    
268    checkpoint64g (2013/05/01)
269    o pkg/exf ALLOW_RUNOFTEMP
270      - if defined,  river and glacier runoff temperature can be read-in from
271        runoftempfile; runoftempfile needs to have same format as runofffile
272    o pkg/thsice (& pkg/bulk_force):
273      - In case Energy-Reference-Level (ERL) is used (temp_EvPrRn=0), account
274        for energy content of Precip + RunOff & Evap (like with pkg/exf).
275      - change computation domain to always be the interior (without overlap).
276      - fix bug (wrong overlap) when using EXF and stressReduction > 0.
277    o verification/tutorial_global_oce_biogeo:
278      - add preliminary OpenAD setup (still has problems)
279    o pkg/seaice:
280      - turn some parameters for choosing the convergence criterion of
281        the inexact Newton method (JFNK) into runtime parameters for convenience
282      - clean up seaice_calc_viscosities.F: remove/retire two options for
283        SEAICetaZmethod (1,2), introduce area weighting for method 3; this changes
284        the results of lab_sea/input because a division has been replaced by
285        a multiplication with the reciprocal (sumNorm)
286      - modify offline_exf_seaice/input.dyn_jfnk/data.seaice to improve
287        convergence of solver (changes results, of course), and to test some
288        new features
289    o model/src:
290      - remove unused (since Aug 2006) S/R SET_WRITE_GLOBAL_PICKUP and its call.
291      - remove unused forcing field "dQdT" and associated parameter "dQdTFile".
292      - move forcing adjustment (balancing surface forcing) in specific S/R
293        where might also be applied exchanges (if needed) to forcing arrays.
294    o pkg/shelfice:
295      - allow to specify the Ice-Shelf mass per unit area (instead of
296        shelficeLoadAnomaly) and do the conversion from one to the other
297      - move loading from file of shelficeLoadAnomaly from SHELFICE_INIT_VARIA
298        to SHELFICE_INIT_FIXED: (a) avoid some TAF recompution issues and
299        (b) will be loaded in time (before calling INI_PRESSURE) in case it is
300        needed in phi0surf for initial pressure calculation when useDynP_inEos_Zc
301      - update isomip experiment forward output (get machine truncation error
302        from conversion shelficeLoadAnomaly -> shelficeMass -> shelficeLoadAnomaly)
303    o verification/offline_exf_seaice:
304      revise data.seaice in input.thermo and input_ad and update results accordingly
305        HO = 0.2, SEAICE_areaLossFormula = 2,
306        SEAICE_growMeltByConv = .TRUE.,
307        SEAICE_doOpenWaterMelt = .TRUE.,
308      Improve consistency with input.thsice and fix the spurious 500m ice corners
309    o verification/global_ocean.cs32x15:
310      - set Energy Reference Level to liq. water @ 0 degC: temp_EvPrRn=0.,
311        in icedyn (thsice+seaice-dyn) test and update output.
312    o verification/offline_exf_seaice:
313      - adjust list of tested variables (with testreport) and update
314        standard test output with better slection of monitored fields.
315    o pkg/cd_code:
316      - swtich off Adams-Bashforth on the 1rst iteration. Update output of
317        experiment lab_sea.hb87
318    o tools/genmake2:
319      - change default makedepend from the system default to tools/xmakedepend:
320        When no makedepend is specified, select tools/xmakedepend it the test pass,
321        otherwise select the system default (if exist and pass the test) or
322        try to build cyrus-makedepend ; stop if none of the 3 works.
323    o pkg/exf & pkg/thsice:
324      - In case Energy-Reference-Level (ERL) is used (temp_EvPrRn=0), account
325        for energy content of Precip + RunOff & Evap. Assumes:
326       1) Rain has same temp as Air.
327       2) Snow has no heat capacity (consistent with seaice & thsice pkgs)
328       3) Run-Off comes at the temp of surface water (with same Cp)
329       4) Evap over ocean is released to the Atmos @ surf-temp (=SST); should be
330        put directly into Latent Heat flux & should use water-vapor heat capacity.
331       5) Evap over snow/seaice (pkg/thsice) assumes constant Lf+Lv (consistent
332        with snow having no Cp) => water vapor is released to Atmos @ 0^oC (=ERL).
333    o pkg/seaice: simplify the use of CPP flags in JFNK-related files
334        (compile when SEAICE_ALLOW_JFNK is defined)
335    o pkg/thsice:
336      - fix oceanic flux diagnostics & timeave (left from new sequence of calls
337        implementation): move THSICE_AVE call after the advection (called directly
338        from thsice_do_advect.F).
339    o verification/global_ocean.90x40x15 and OpenAD:
340      New experiment for OpenAD is identical to the one in input_ad except that
341        multiDimAdvection=.FALSE.,
342      There is still an issue with this.
343    o pkg/thsice:
344      - account for ice velocity (ocean relative velocity) in turbulent heat flux
345        at the base of the ice; update output of global_ocean.cs32x15 (icedyn)
346        and offline_exf_seaice (main test).
347    
348    checkpoint64f (2013/03/31)
349    o verification/OpenAD:
350      - new (smaller, without OAD_DEBUG) output_oadm.txt generated using gfortran.
351    o verification/isomip, pkg/shelfice and OpenAD:
352      - add OpenAD setup to this exp and make shelfice package work with OpenAD
353    o verification/tutorial_global_oce_biogeo:
354      - update AD and TLM output after turning off ALLOW_FE (in DIC_OPTIONS.h)
355    o verification/offline_exf_seaice:
356      - replace adjoint experiment (now similar to fwd input.thermo/ setup).
357    o verification/tutorial_tracer_adjsens, pkg/ptracers and OpenAD:
358      - add OpenAD setup to this exp and make ptracers package work with OpenAD
359    o pkg/seaice/seaice_evp.F:
360       mask the asymmetric contribution of the ice-ocean stress (when
361       the turningAngle is non-zero) over open water to avoid stripes
362       in the EVP-solutions after many EVP-substeps. This does not change
363       the verification experiment (because turningAngle=0 in that experiment),
364       but will affect other EVP solutions with turningAngle.ne.0
365    o verification, AD & TLM output:
366      - new TAF version 2.3.10 (previously 2.3.8) add more parenthesis in multiple
367        additions and multiplications which affect results at machine truncation
368        level. Update few AD output (1D_ocean_ice_column, bottom_ctrl_5x5,
369        lab_sea.noseaicedyn & offline_exf_seaice) and TLM output
370        (1D_ocean_ice_column & tutorial_tracer_adjsens.som81) which had only 12
371        digits of matching.
372    o pkg/seaice:
373       modify lsr-algorithm so that it vectorizes AND converges by using a
374       "zebra" method: split vector loop into two with step size 2; this
375       solves a general convergence problem for the JFNK solver on a vector
376       computer. It has the potential to even improve convergence for
377       non-vector machines, but it does change the results so it is turned
378       off by default. To turn on define CPP-flags SEAICE_VECTORIZE_LSR and
379       SEAICE_VECTORIZE_LSR_ZEBRA in SEAICE_OPTIONS.h
380    
381    checkpoint64e (2013/03/05)
382    o pkg/ecco and several verification experiments:
383       Remove special versions of the_model_main.F, the_main_loop.F, forward_step.F
384       from ecco package, and revert to unified routine in model/src/
385       Adjust verification experiments accordingly, especially gloal_oce_llc90
386       Should conclude long-standing work by Gael to reconsile the_main_loop with
387       ECCO and will enable OpenAD's revolve loop in ECCO setup.
388    o pkg/generic_advdiff:
389      - implement compressible flow method for multi-dim advection (similar to
390        gad_som_advect.F); add new option "GAD_MULTIDIM_COMPRESSIBLE" (since
391        TAF generates many recomputations) to use it; no yet coded with implicit
392        vertical advection.
393      - change experiment advect_cs (new output) and advect_xy (same output)
394        to test compressible flow multi-dim advection.
395    o pkg/generic_advdiff:
396      - fix SOM advection for unusual cases (linear Free-Surf in r*, other
397        cases where linear Free-Surf is not @ k=1, e.g., useShelfIce)
398    o pkg/seaice:
399      - fix bug in the no-slip implementation in seaice_calc_strainrates.F, this
400        bug affects two verification experiments (lab_sea and lab_sea.hb87),
401        recover old (wrong) results by setting noSlipFac = 2. in
402        seaice_calc_strainrates.F;
403      - add another averaging method for etaZ (etaZmethod=3), a mix of 2 and 0
404      - add runtime parameter SEAICE_JFNKepsilon for that finite difference
405        gradient in the Jacobian times vector operation (s/r seaice_jacvec)
406      - fix line search in seaice_jfnk.F (s/r seaice_jfnk_update)
407    o pkg/seaice: reorganize seaice_lsr.F to be able to reuse more code:
408      - new subroutines seaice_lsr_tridiagu/v
409      - introduce loop bounds i/jmin/max to be able to use a restricted
410        additive Schwarz method, but not used for now.
411      - rename SEAICE_CALC_LSR_COEFFS into SEAICE_LSR_CALC_COEFFS
412      - use new subroutines seaice_lsr_tridiagu/v in s/r seaice_preconditioner
413    o OpenAD support
414       Reorganize S/R call for overall time-stepping loop to facilitate
415       OpenAD revolve loop replacement
416       (new S/R main_do_loop.F)
417    o model/src:
418      - add 3-D array 3rd dimension to argument list of S/R ADAMS_BASHFORTH2/3;
419      - pkg/cheapaml: remove local S/R ADAMS2d and use instead standard S/R
420        ADAMS_BASHFORTH2.
421    o pkg/cheapaml:
422      - add new parameter (default=F, same as before) to disable full domain
423        (including land) periodicity in X & Y dir.
424      - new S/R CHEAPAML_COPY_EDGES to copy relaxation field into edges of
425        prognostics field ; merge the 2 S/R cycle_2d_tracer and timestep_2d_tracer
426        into single S/R CHEAPAML_TIMESTEP.
427    
428    checkpoint64d (2013/02/17)
429    o pkg/monitor (angular momentum):
430      - do not add Eta contribution to the total AM if using rigid-lid;
431      - correct for Adams-Bashforth in zonal-wind part (instead of in AM_eta).
432      - horizontal discretisation: compute Zonal wind contribution separately for
433        each component (instead of from cell centered averaged) and use the 4
434        grid-cell corner averaged value of Omega*(R*cos_Phi)^2 in AM_eta part.
435      - Check that AM is conserved with linear dynamics (momAdvection=F and linear
436        FreeSurf) if using vectorInvariant momentum.
437    o model/src (horizontal grid):
438      - move initialisation of all horizontal grid arrays to null value
439        from specific horizontal grid S/R to main S/R INI_GRID;
440      - add 2 new arrays to project model C-grid velocity on to zonal direction
441        (similar to AngleCosC & -AngleSinC but at U and V point location) and
442        compute them in S/R CALC_GRID_ANGLES.
443    o pkg/seaice: replace a hard coded parameter by a runtime parameter
444        SEAICE_JFNK_tolIter
445    o pkg/seaice: introduce a restricted additive Schwarz (RAS) method in
446        preconditioner for JFNK (run LSR into the overlaps as far as possible,
447        i.e OLx/y-2, but overwrite the solution in the overlaps)
448      - extend loop range in seaice_calc_viscosity
449      - add new parameters SEAICE_OLx/y (default = OLx/y-2)
450      - add flexible loop ranges to seaice_preconditioner, seaice_calc_lsr_coeffs
451      - slightly modify loops in tridiagonal solver lsr-preconditioner
452      - by default remove the extra exchange in seaice_preconditioner with a
453        replacement of an undocumented CPP flag by SEAICE_PRECOND_EXTRA_EXCHANGE
454      - modify offline_exf_seaice so that old results without RAS are reproduced
455        for output.dyn_jfnk.txt
456      in seaice_fgmres.F (unrelated to RAS)
457      - add a cpp-flag option for a re-ordered mapping (potentially more
458        efficient), but because this changes the results, turn it off by
459        default
460      - replace the save statement by local common blocks
461    o utils/matlab:
462      - fix tile-offset in rdmnc.m when output was produced using EXCH2.
463      - update cs_grid/bk_line scripts to use load_grid.m (in utils/matlab)
464        instead of local script "load_cs.m".
465    o pkg/seaice:
466      - fix a serious bug in seaice_fgmres.F, s/r seaice_scalprod, connected
467        to the scalarProductMetric and the unrolling. By chance this does not
468        change the verification experiment, because of the particular domain
469        decomposition
470    o pkg/diagnostics:
471      - change default missing_value from UNSET_RL to -999.
472    o pkg/layers: improve vectorization of layers_fluxcalc.F
473      - step 1: split loops, make TatU/V 2D arrays. This alone reduces the cpu
474        time spent in this routine by more than a factor of 3 on an NEC-SX8
475      - step 2: replace search algorithm by a bisection algorithm found in
476        Press et al. Numerical Recipes in Fortran. This algorithm can be
477        vectorized and finds the correct bin in approx. log2(Nlayers) steps.
478        For now, use this algorithm only for TARGET_NEC_SX defined.
479      - moved the search algorithm into a separate subroutine, that is kept
480        within the same file for automatic inlining.
481      - modified catching potential errors
482    o pkg/ecco:
483    - add compile switches ALLOW_SHALLOW_ALTIMETRY and ALLOW_HIGHLAT_ALTIMETRY.    - add compile switches ALLOW_SHALLOW_ALTIMETRY and ALLOW_HIGHLAT_ALTIMETRY.
484  o model/src, pkg/autodiff, pkg/ctrl, pkg/grdchk :  o model/src, pkg/autodiff, pkg/ctrl, pkg/grdchk :
485    - modifications for ALLOW_GENTIM2D_CONTROL    - modifications for ALLOW_GENTIM2D_CONTROL
486    -- forward_step.F, the_main_loop.F : pass options and arrays for adjoint tapes.    -- forward_step.F, the_main_loop.F : pass options and arrays for adjoint tapes.
487    -- load_fields_driver.F : add call to CTRL_MAP_GENTIM2D( myTime, myIter, myThid )    -- load_fields_driver.F : add call to CTRL_MAP_GENTIM2D( myTime, myIter, myThid )

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