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revision 1.1802 by jmc, Sun Jan 6 20:36:27 2013 UTC revision 1.1910 by jmc, Sun Aug 11 16:12:57 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 model/inc:
8      - move FCORI_MACROS.h from PARAMS(_MACROS).h to GRID_MACROS.h (left from
9        8 yrs ago modif when Coriolis arrays were moved from PARAMS.h to GRID.h)
10    o pkg/kpp & aim_v23:
11      - only call DIAGNOSTICS_FILL when useDiagnostics=TRUE.
12    o pkg/seaice:
13      - restore (last time on 2011/12/24) ability to compile pkg/seaice with
14        undefined pkg/exf ALLOW_ATM_TEMP or ALLOW_RUNOFF CPP-options.
15      - only call DIAGNOSTICS_FILL when useDiagnostics=TRUE.
16    o eesupp/src:
17      - fix check for overlap-size argument (myOLn.GT.MAX_OLY_EXCH)
18        in exch1_rx[_ad].template (thanks to Francois Lefeuvre report).
19    o switch to TAF version-2:
20      - add flow directives to "freeze" naming convention for ad-routines that
21        are used in I/O routines of adjoint state and associated common blocks
22        that are used in adcommon.h (backward compatible with version-1)
23      - update all ad-optfiles (in tools/adjoint_options + few local to some
24        verification exp) to switch to latest TAF version (currently 2.5.5);
25        merge "*_mpi" adoptfiles into the corresponding non-mpi (but commented
26        out except for diva).
27      - the major change with TAF version-2 is that both the differentiated
28        routines and the forward routines (new) are returned as part of the TAF
29        output source code. Update genmake2 accordingly.
30      - new output for AD experiment tutorial_global_oce_biogeo (better AD gradient
31        with version-2 when compared to TLM or FWD gradient); other experiments
32        output show minor changes (machine truncation level); update the few AD &
33        TLM output with 12 matching digits only (some prior to version-2 switch).
34    
35    checkpoint64l (2013/08/05)
36    o model/src:
37      - in dynamics.F, skip the call to CALC_VISCOSITY if momViscosity=F
38      - main_do_loop.F: no longer includes additional (AUTODIFF) header files
39        when using TAF but only if using OpenAD.
40    o pkg/mom_common+fluxform+vecinv:
41      - always set horiz. viscosity arrays to background value before calling
42        MOM_CALC_VISC (in MOM_FLUXFORM & MOM_VECINV) and call S/R MOM_CALC_VISC
43        only when using variable horiz. viscosity (useVariableVisc=T);
44      - simplify mom_vecinv.F (only 1 block for momViscosity).
45    o pkg/mom_common: variable horiz. viscosity in NH code
46      - move horiz-viscosity 3-D arrays viscAh_W & viscA4_W (used in calc_gw.F)
47        from model/inc/NH_VARS.h to pkg/mom_common/MOM_VISC.h
48      - store in common block (in MOM_VISC.h) logical parameters: useHarmonicVisc,
49        useBiharmonicVisc & useVariableVisc.
50      - fix old bug (already in 1rst implementation of variable horizontal viscosity
51        in calc_gw.F, version 1.27, 2006/06/20):
52        horizontal bi-harmonic viscosity in gW was missing when wiscA4W=0
53        even if variable bi-harmonic viscosity (e.g., viscA4Grid) was non-zero.
54      - change background horiz viscosity in vertical momentum (gW) to always be
55        viscAhW,viscA4W (instead of switching to viscAhD, viscA4D when using
56        any type of variable viscosity, e.g., viscAh/4Grid)
57      - change default value of viscAhW,viscA4W to viscAhD,viscA4D (instead of
58        viscAh,viscA4) which default to viscAh,viscA4 :  this avoid missing
59        horiz. viscosity in W eq when just setting viscAhD/Z,viscA4D/Z (since
60        default viscAh,viscA4 is zero).
61    o model/src:
62      - extend length of drC & recip_drC from Nr to Nr+1.
63    o Divided Adjoint (DIVA) with MPI:
64      - genmake2: do not create local ./mpi_headers dir when no file to copy into.
65      - remove option ALLOW_DIVIDED_ADJOINT_MPI (replaced by ALLOW_DIVIDED_ADJOINT
66        and ALLOW_USE_MPI) from model/src code and from ECCO_CPPOPTIONS.h.
67    
68    checkpoint64k (2013/07/23)
69    o tools/OAD_support:
70      - avoid the need for file "oadtempflile" in insertTemplateDir.bash
71        and remove it from genmake2.
72    o tools/build_options:
73      - remove MPI_HEADER_FILES_INC setting (no longer used) and comment out
74        MPI_HEADER_FILES list (let genmake2 find the missing headers)
75    o verification/halfpipe_streamice:
76      - change to driving stress formulation; update both Fwd & AD output.
77    o tools/genmake2 and Divided Adjoint with MPI:
78      - remove default setting of MPIINCLUDEDIR from $MPIHOME (always been broken);
79      - only create local ./mpi_headers dir if using MPI and MPIINCLUDEDIR is set;
80      - add new variable (LOCAL_MPI_HEADERS, replace MPI_HEADER_FILES_INC) in
81        Makefile, which is set by genmake2, and check which mpi-headers are needed.
82        Note: need to update adjoint_options/adjoint_diva_mpi accordingly.
83      - update target "CLEAN" (to also remove ./mpi_headers/ dir).
84    o testreport:
85      - changes for Divided Adjoint Run: when file "run_ADM_DIVA" is present,
86        perform additional runs (number of additional runs is "add_DIVA_runs" taken
87        from file run_ADM_DIVA ; should match "nchklev_3" in file "code_ad/tamc.h").
88    o verification/lab_sea (AD test):
89      - change to test Divided Adjoint Run in this set-up (both standard AD test
90        and 2 secondary AD test: noseaice + noseaicedyn); drop the evp AD test.
91    o pkg atm_ & ocn_compon_interf:
92      - remove cpl_earlyExpImpCall=F option (was mainly a hack added for the old
93        staggerTimeStep implementation) and disable (retired) corresponding
94        parameter.
95    o pkg/offline:
96      - comment out unused field-array: ICEM, ConvectCount, hflx[01], icem[01];
97      - add S/R OFFLINE_CHECK to print offline parameter summary
98        and stop if loading a file that is not used;
99      - enable to calculate GMRedi tensor, KPP mixing and convective index
100        when the corresponding file(s) is/are not specified (but pkg is used).
101      - comment out resetting of monitorFreq (to endTime) since it still useful
102        for monitoring CFL numbers and checking offline fields.
103    o OpenAD:
104      - do not define OAD_DEBUG (in tools/adjoint_options/adjoint_oad) to get
105        smaller standard output) and generate new (smaller) output (on baudelaire
106        using gfortran with -ieee) for exp. tutorial_tracer_adjsens
107    o model/src:
108      - call EXTERNAL_FORCING_SURF outside bi,bj loops (in do_oceanic_phys.F),
109        (where external_forcing_adjust was called) and change list of arguments;
110      - merge external_forcing_adjust.F into external_forcing_surf.F
111      - put surface relaxation of SST & SSS in new S/R (forcing_surf_relax.F)
112        which also contains balancing surface relaxation (ALLOW_BALANCE_RELAX,
113        previously in file "balance_relax.F", now removed); remove corresponding
114        arrays in FFIELDS.h.
115      - EXTERNAL_FORCING_SURF is now called when using pkg/offline; implement
116        a hack for getting back surfaceForcingS (loaded from file) when using
117        ALLOW_OLD_VIRTUALFLUX (pkg/dic, in DIC_OPTIONS.h) in offline set-up.
118      - update output of AD test experiment global_ocean.cs32x15.seaice_dynmix
119        (was getting only 11 digits for AD-grad, due to different truncation
120         error in AD code).
121    
122    checkpoint64j (2013/07/04)
123    o pkg/offline:
124      - to enable the use of other features with pkg offline (e.g., obcs),
125        also call S/R DO_OCEANIC_PHYS in offline run - more modifs to come.
126      - comment out "allowFreezing" (now active) in 2 offline testing exp.
127    o pkg/exf ALLOW_RUNOFTEMP
128      - fix sign and make compatible with temp_EvPrRn .NE. UNSET_RL
129      - ahdded RUNOFTEMP test to verification/global_ocean.cs32x15/input.seaice
130      - changes verification/global_ocean.cs32x15/results/output.seaice.txt
131    o pkg/atm_phys:
132      - allows to add some damping on uVel,vVel (strength only function of k).
133    o verification, ad-tests:
134      - reduce length of the simulation for AD test: global_ocean.cs32x15.seaice,
135        global_ocean_ebm and offline_exf_seaice.thsice.
136    o verification/halfpipe_streamice:
137      - found a bug in s/r pkg/streamice/streamice_advect_thickness which caused
138        flux input boundary conditions to be ignored; a fix for this bug changed
139        verification results for forward test.
140      - add adjoint test.
141    o pkg/ptracers:
142      - allow to restart without SOM pickup (resetting SOM to zero).
143    o pkg/gmredi:
144      - New parameterisation for the calculation of K and (GM_PsiX,GM_PsiY) added.
145      - It uses mixing length theory and suppression by steering level effects to
146        calculate a diffusivity used in the Redi tensor (see Bates et al., submitted
147        to JPO, for more details).
148      - It also uses the diffusivity to calculate an eddy induced streamfunction
149        based on a PV closure (rather than a buoyancy closure as in GM).
150      - New files added to pkg/gmredi:
151        gmredi_k3d.F calculates the diffusivity for the Redi tensor and the eddy
152          induced overturning streamfunction (called from gmredi_calc_tensor)
153        gmredi_calc_eigs.F calculates the eigenvalues and eigenvectors required
154          for use in gmredi_k3d
155        gmredi_calc_urms.F calculates the the rms eddy velocity used to calculate
156          the eddy diffusivity
157    
158    checkpoint64i (2013/06/18)
159    o pkg/cheapaml:
160      - take src files from MITgcm_contrib/verification_other/offline_cheapaml/code
161        that enable the use of seaice (pkg/thsice thermo & pkg/seaice dynamics)
162        with pkg/cheapaml.
163    o utils/python: add subpackage for cubed sphere function, first example is
164        simple cs.pcol to plot 2D fields on a map
165    o pkg/streamice:
166      - This is a new package in MITgcm, which solves dynamic equations for ice
167         sheets and ice streams
168      - At the moment it is independent of atmosphere/ocean dynamics, or any
169        other physical packages in MITgcm, even ShelfIce (although it is anticipat-
170        ed that this will change)
171      - There is a new verification exercise that tests it, halfpipe_streamice,
172        evolves a 40x80 km ice stream/ice shelf (at coarse resolution) in a
173        rectangular embayment
174      - halfpipe_streamice is forward-only for now, will have TAF test soon
175      - for questions, email dgoldber@mit.edu
176    o pkg/thsice:
177      - fix filling of snow-precip diagnostic (SIsnwPrc) (left from the removing
178        of snowPrc from common bloc, on May 2nd, thsice_step_fwd.F revision 1.40);
179      - remove diagnostics 'SI_FrcFx' ( now identical to 'SI_Fract' with new
180         call sequence: ice-Thermo(thsice),ice-Dyn,ice-Advect );
181      - allow precip from pkg/cheapaml to make snow over seaice.
182    o pkg/cfc:
183      - move in separated header file (CFC_ATMOS.h) time-serie arrays of Atmos CFC
184      - remove atmos CFC 2-D arrays from common bloc (now local variables)
185      - change some hard-coded constant to run time parameter for reading and
186        and interpolating atmospheric CFC ; keep same default as previously.
187      - more flexible reading of Atmos CFC (number of records no longer hard-coded)
188      - put arguments in standard order: myTime, myIter, myThid
189      - use standard S/R GET_PERIODIC_INTERVAL for time interpolation of
190        atmospheric CFC ; fix for the case myIter < PTRACERS_iter0.
191      - fix calculation of surf tendencys for partial-cell and/or Non-Lin Free-Surf
192      - new routine to print summary of CFC params and check for consistency.
193    o pkg/seaice: add uice/vice to the parameter list of s/r seaice_advdiff,
194      similar to thsice_advdiff.
195      Note that for the B-grid case the routine parameters uc/vc are overwritten.
196    o pkg/cfc:
197      - change time interpolation for atmospheric CFC-11 (now same as for CFC-12);
198        update output (CFC-11) of experiment cfc_example and tutorial_cfc_offline.
199      - fix interpolation of atmphspheric CFC between Sorthern and Northern
200        hemisphere value.
201    o pkg/seaice:
202      - allow to use seaice dynamics without pkg/exf (e.g., using pkg/cheapaml)
203    o pkg/seaice: add Adams-Bashforth2 time discretization for ice dynamics;
204                  so far only for JFNK-solver, turn on with SEAICEuseAB2 = .TRUE.
205      - requires an additional time level that is stored in the pickup
206      - you can start with AB2 from a pickup without this time level with
207        pickupStrictlyMatch = .false.
208    
209    checkpoint64h (2013/05/26)
210    o pkg/cheapaml:
211      - replace one ()**.5 with SQRT + use temp var "cdu = tau/Du" (coare3_flux);
212        affect machine truncation (but exp cheapAML_box still pass with 13 digits).
213      - consistent treatment of uWind,vWind location: assume everywhere in
214        pkg/cheapaml that they are on C-grid (@ uVel,vVel location)
215        (Note: was already the case for Tair,Qair advection);
216        add option (INCONSISTENT_WIND_LOCATION) to recover old results.
217      - compute diabatic forcing only in the interior (excluding overlap regions)
218      - fill in array "Qsw" (for short-wave heating);
219      - add diagnostic for precip ; fill-in diagnostics for cheapAML state vars
220        before any update (consistent with MITgcm state var diagnostics);
221      - cheapaml_fields_load.F & cheapaml_init_varia.F : only fill outer edges if
222        non periodic ; + adjusted for uWind,vWind (C-grid).
223    o pkg/seaice:
224      - remove dependence of pkg/seaice versus pkg/exf (file: pkg/pkg_depend) and
225        add explicitly pkg/exf in experiments that currently use pkg/seaice.
226      - allows to compile pkg/seaice without pkg/exf.
227    o tools/OAD_support:
228      - use a local copy (ourRWCPinBd) to ensure index ourRWCP stays within bounds
229        of array "ourStepOf" in function rvNextAction (revolve.F90).
230    o pkg/aim_compon_interf renamed to pkg/atm_compon_interf
231      - change pkg name (to be used with other atmospheric physics pkg)
232        but by-pass CVS when making the new pkg so that we keep the CVS history.
233    o pkg/offline:
234      - call OFFLINE_FIELDS_LOAD from pkg/offline/offline_init_varia.F
235        (previously called from pkg/dic_surfforcing_init.F)
236    o model/src:
237      - re-order sequence of calls within packages_init_variables.F, using
238        standard order, except for:
239         DIAGNOSTICS_INIT_VARIA and OFFLINE_INIT_VARIA (called @ the top),
240         CTRL_MAP_INI and OBCS_INIT_VARIABLES (called @ the bottom)
241    o new pkg: atm_phys
242      - add entry point and source code (previously in contrib
243          verification_other/atm_gray/code_gray/) for new pkg "atm_phys"
244        (atmospheric physics pkg from P. O'Gorman and T. Schneider, JCl, 2008).
245      - re-order sequence of calls within packages_readparms.F,
246         packages_init_fixed.F and packages_write_pickup.F
247        (but skip packages_init_variables.F because of TAF issues).
248      - update contrib/*/atm_gray/ experiment.
249    o pkg/seaice (ITD code):
250      - simplify and fix the writing of pickup-files for ITD case
251    o pkg/seaice (ITD code):
252      - introduce floe size dependent lateral melt for ITD case;
253      - cleaning (avoid division by zero, change to f77 syntax, remove tabs)
254      - update seaice_itd experiment main output.
255    o pkg/thsice:
256      - remove snowPrc from common block THSICE_FLUX, in THSICE_VARS.h and
257        declared it locally (without bi,bj) in thsice_main.F & aim_do_physics.F;
258        changed accordingly pkg/atm2d.
259    
260    checkpoint64g (2013/05/01)
261    o pkg/exf ALLOW_RUNOFTEMP
262      - if defined,  river and glacier runoff temperature can be read-in from
263        runoftempfile; runoftempfile needs to have same format as runofffile
264    o pkg/thsice (& pkg/bulk_force):
265      - In case Energy-Reference-Level (ERL) is used (temp_EvPrRn=0), account
266        for energy content of Precip + RunOff & Evap (like with pkg/exf).
267      - change computation domain to always be the interior (without overlap).
268      - fix bug (wrong overlap) when using EXF and stressReduction > 0.
269    o verification/tutorial_global_oce_biogeo:
270      - add preliminary OpenAD setup (still has problems)
271    o pkg/seaice:
272      - turn some parameters for choosing the convergence criterion of
273        the inexact Newton method (JFNK) into runtime parameters for convenience
274      - clean up seaice_calc_viscosities.F: remove/retire two options for
275        SEAICetaZmethod (1,2), introduce area weighting for method 3; this changes
276        the results of lab_sea/input because a division has been replaced by
277        a multiplication with the reciprocal (sumNorm)
278      - modify offline_exf_seaice/input.dyn_jfnk/data.seaice to improve
279        convergence of solver (changes results, of course), and to test some
280        new features
281    o model/src:
282      - remove unused (since Aug 2006) S/R SET_WRITE_GLOBAL_PICKUP and its call.
283      - remove unused forcing field "dQdT" and associated parameter "dQdTFile".
284      - move forcing adjustment (balancing surface forcing) in specific S/R
285        where might also be applied exchanges (if needed) to forcing arrays.
286    o pkg/shelfice:
287      - allow to specify the Ice-Shelf mass per unit area (instead of
288        shelficeLoadAnomaly) and do the conversion from one to the other
289      - move loading from file of shelficeLoadAnomaly from SHELFICE_INIT_VARIA
290        to SHELFICE_INIT_FIXED: (a) avoid some TAF recompution issues and
291        (b) will be loaded in time (before calling INI_PRESSURE) in case it is
292        needed in phi0surf for initial pressure calculation when useDynP_inEos_Zc
293      - update isomip experiment forward output (get machine truncation error
294        from conversion shelficeLoadAnomaly -> shelficeMass -> shelficeLoadAnomaly)
295    o verification/offline_exf_seaice:
296      revise data.seaice in input.thermo and input_ad and update results accordingly
297        HO = 0.2, SEAICE_areaLossFormula = 2,
298        SEAICE_growMeltByConv = .TRUE.,
299        SEAICE_doOpenWaterMelt = .TRUE.,
300      Improve consistency with input.thsice and fix the spurious 500m ice corners
301    o verification/global_ocean.cs32x15:
302      - set Energy Reference Level to liq. water @ 0 degC: temp_EvPrRn=0.,
303        in icedyn (thsice+seaice-dyn) test and update output.
304    o verification/offline_exf_seaice:
305      - adjust list of tested variables (with testreport) and update
306        standard test output with better slection of monitored fields.
307    o pkg/cd_code:
308      - swtich off Adams-Bashforth on the 1rst iteration. Update output of
309        experiment lab_sea.hb87
310    o tools/genmake2:
311      - change default makedepend from the system default to tools/xmakedepend:
312        When no makedepend is specified, select tools/xmakedepend it the test pass,
313        otherwise select the system default (if exist and pass the test) or
314        try to build cyrus-makedepend ; stop if none of the 3 works.
315    o pkg/exf & pkg/thsice:
316      - In case Energy-Reference-Level (ERL) is used (temp_EvPrRn=0), account
317        for energy content of Precip + RunOff & Evap. Assumes:
318       1) Rain has same temp as Air.
319       2) Snow has no heat capacity (consistent with seaice & thsice pkgs)
320       3) Run-Off comes at the temp of surface water (with same Cp)
321       4) Evap over ocean is released to the Atmos @ surf-temp (=SST); should be
322        put directly into Latent Heat flux & should use water-vapor heat capacity.
323       5) Evap over snow/seaice (pkg/thsice) assumes constant Lf+Lv (consistent
324        with snow having no Cp) => water vapor is released to Atmos @ 0^oC (=ERL).
325    o pkg/seaice: simplify the use of CPP flags in JFNK-related files
326        (compile when SEAICE_ALLOW_JFNK is defined)
327    o pkg/thsice:
328      - fix oceanic flux diagnostics & timeave (left from new sequence of calls
329        implementation): move THSICE_AVE call after the advection (called directly
330        from thsice_do_advect.F).
331    o verification/global_ocean.90x40x15 and OpenAD:
332      New experiment for OpenAD is identical to the one in input_ad except that
333        multiDimAdvection=.FALSE.,
334      There is still an issue with this.
335    o pkg/thsice:
336      - account for ice velocity (ocean relative velocity) in turbulent heat flux
337        at the base of the ice; update output of global_ocean.cs32x15 (icedyn)
338        and offline_exf_seaice (main test).
339    
340    checkpoint64f (2013/03/31)
341    o verification/OpenAD:
342      - new (smaller, without OAD_DEBUG) output_oadm.txt generated using gfortran.
343    o verification/isomip, pkg/shelfice and OpenAD:
344      - add OpenAD setup to this exp and make shelfice package work with OpenAD
345    o verification/tutorial_global_oce_biogeo:
346      - update AD and TLM output after turning off ALLOW_FE (in DIC_OPTIONS.h)
347    o verification/offline_exf_seaice:
348      - replace adjoint experiment (now similar to fwd input.thermo/ setup).
349    o verification/tutorial_tracer_adjsens, pkg/ptracers and OpenAD:
350      - add OpenAD setup to this exp and make ptracers package work with OpenAD
351    o pkg/seaice/seaice_evp.F:
352       mask the asymmetric contribution of the ice-ocean stress (when
353       the turningAngle is non-zero) over open water to avoid stripes
354       in the EVP-solutions after many EVP-substeps. This does not change
355       the verification experiment (because turningAngle=0 in that experiment),
356       but will affect other EVP solutions with turningAngle.ne.0
357    o verification, AD & TLM output:
358      - new TAF version 2.3.10 (previously 2.3.8) add more parenthesis in multiple
359        additions and multiplications which affect results at machine truncation
360        level. Update few AD output (1D_ocean_ice_column, bottom_ctrl_5x5,
361        lab_sea.noseaicedyn & offline_exf_seaice) and TLM output
362        (1D_ocean_ice_column & tutorial_tracer_adjsens.som81) which had only 12
363        digits of matching.
364    o pkg/seaice:
365       modify lsr-algorithm so that it vectorizes AND converges by using a
366       "zebra" method: split vector loop into two with step size 2; this
367       solves a general convergence problem for the JFNK solver on a vector
368       computer. It has the potential to even improve convergence for
369       non-vector machines, but it does change the results so it is turned
370       off by default. To turn on define CPP-flags SEAICE_VECTORIZE_LSR and
371       SEAICE_VECTORIZE_LSR_ZEBRA in SEAICE_OPTIONS.h
372    
373    checkpoint64e (2013/03/05)
374    o pkg/ecco and several verification experiments:
375       Remove special versions of the_model_main.F, the_main_loop.F, forward_step.F
376       from ecco package, and revert to unified routine in model/src/
377       Adjust verification experiments accordingly, especially gloal_oce_llc90
378       Should conclude long-standing work by Gael to reconsile the_main_loop with
379       ECCO and will enable OpenAD's revolve loop in ECCO setup.
380    o pkg/generic_advdiff:
381      - implement compressible flow method for multi-dim advection (similar to
382        gad_som_advect.F); add new option "GAD_MULTIDIM_COMPRESSIBLE" (since
383        TAF generates many recomputations) to use it; no yet coded with implicit
384        vertical advection.
385      - change experiment advect_cs (new output) and advect_xy (same output)
386        to test compressible flow multi-dim advection.
387    o pkg/generic_advdiff:
388      - fix SOM advection for unusual cases (linear Free-Surf in r*, other
389        cases where linear Free-Surf is not @ k=1, e.g., useShelfIce)
390    o pkg/seaice:
391      - fix bug in the no-slip implementation in seaice_calc_strainrates.F, this
392        bug affects two verification experiments (lab_sea and lab_sea.hb87),
393        recover old (wrong) results by setting noSlipFac = 2. in
394        seaice_calc_strainrates.F;
395      - add another averaging method for etaZ (etaZmethod=3), a mix of 2 and 0
396      - add runtime parameter SEAICE_JFNKepsilon for that finite difference
397        gradient in the Jacobian times vector operation (s/r seaice_jacvec)
398      - fix line search in seaice_jfnk.F (s/r seaice_jfnk_update)
399    o pkg/seaice: reorganize seaice_lsr.F to be able to reuse more code:
400      - new subroutines seaice_lsr_tridiagu/v
401      - introduce loop bounds i/jmin/max to be able to use a restricted
402        additive Schwarz method, but not used for now.
403      - rename SEAICE_CALC_LSR_COEFFS into SEAICE_LSR_CALC_COEFFS
404      - use new subroutines seaice_lsr_tridiagu/v in s/r seaice_preconditioner
405    o OpenAD support
406       Reorganize S/R call for overall time-stepping loop to facilitate
407       OpenAD revolve loop replacement
408       (new S/R main_do_loop.F)
409    o model/src:
410      - add 3-D array 3rd dimension to argument list of S/R ADAMS_BASHFORTH2/3;
411      - pkg/cheapaml: remove local S/R ADAMS2d and use instead standard S/R
412        ADAMS_BASHFORTH2.
413    o pkg/cheapaml:
414      - add new parameter (default=F, same as before) to disable full domain
415        (including land) periodicity in X & Y dir.
416      - new S/R CHEAPAML_COPY_EDGES to copy relaxation field into edges of
417        prognostics field ; merge the 2 S/R cycle_2d_tracer and timestep_2d_tracer
418        into single S/R CHEAPAML_TIMESTEP.
419    
420    checkpoint64d (2013/02/17)
421    o pkg/monitor (angular momentum):
422      - do not add Eta contribution to the total AM if using rigid-lid;
423      - correct for Adams-Bashforth in zonal-wind part (instead of in AM_eta).
424      - horizontal discretisation: compute Zonal wind contribution separately for
425        each component (instead of from cell centered averaged) and use the 4
426        grid-cell corner averaged value of Omega*(R*cos_Phi)^2 in AM_eta part.
427      - Check that AM is conserved with linear dynamics (momAdvection=F and linear
428        FreeSurf) if using vectorInvariant momentum.
429    o model/src (horizontal grid):
430      - move initialisation of all horizontal grid arrays to null value
431        from specific horizontal grid S/R to main S/R INI_GRID;
432      - add 2 new arrays to project model C-grid velocity on to zonal direction
433        (similar to AngleCosC & -AngleSinC but at U and V point location) and
434        compute them in S/R CALC_GRID_ANGLES.
435    o pkg/seaice: replace a hard coded parameter by a runtime parameter
436        SEAICE_JFNK_tolIter
437    o pkg/seaice: introduce a restricted additive Schwarz (RAS) method in
438        preconditioner for JFNK (run LSR into the overlaps as far as possible,
439        i.e OLx/y-2, but overwrite the solution in the overlaps)
440      - extend loop range in seaice_calc_viscosity
441      - add new parameters SEAICE_OLx/y (default = OLx/y-2)
442      - add flexible loop ranges to seaice_preconditioner, seaice_calc_lsr_coeffs
443      - slightly modify loops in tridiagonal solver lsr-preconditioner
444      - by default remove the extra exchange in seaice_preconditioner with a
445        replacement of an undocumented CPP flag by SEAICE_PRECOND_EXTRA_EXCHANGE
446      - modify offline_exf_seaice so that old results without RAS are reproduced
447        for output.dyn_jfnk.txt
448      in seaice_fgmres.F (unrelated to RAS)
449      - add a cpp-flag option for a re-ordered mapping (potentially more
450        efficient), but because this changes the results, turn it off by
451        default
452      - replace the save statement by local common blocks
453    o utils/matlab:
454      - fix tile-offset in rdmnc.m when output was produced using EXCH2.
455      - update cs_grid/bk_line scripts to use load_grid.m (in utils/matlab)
456        instead of local script "load_cs.m".
457    o pkg/seaice:
458      - fix a serious bug in seaice_fgmres.F, s/r seaice_scalprod, connected
459        to the scalarProductMetric and the unrolling. By chance this does not
460        change the verification experiment, because of the particular domain
461        decomposition
462    o pkg/diagnostics:
463      - change default missing_value from UNSET_RL to -999.
464    o pkg/layers: improve vectorization of layers_fluxcalc.F
465      - step 1: split loops, make TatU/V 2D arrays. This alone reduces the cpu
466        time spent in this routine by more than a factor of 3 on an NEC-SX8
467      - step 2: replace search algorithm by a bisection algorithm found in
468        Press et al. Numerical Recipes in Fortran. This algorithm can be
469        vectorized and finds the correct bin in approx. log2(Nlayers) steps.
470        For now, use this algorithm only for TARGET_NEC_SX defined.
471      - moved the search algorithm into a separate subroutine, that is kept
472        within the same file for automatic inlining.
473      - modified catching potential errors
474    o pkg/ecco:
475      - add compile switches ALLOW_SHALLOW_ALTIMETRY and ALLOW_HIGHLAT_ALTIMETRY.
476    o model/src, pkg/autodiff, pkg/ctrl, pkg/grdchk :
477      - modifications for ALLOW_GENTIM2D_CONTROL
478      -- forward_step.F, the_main_loop.F : pass options and arrays for adjoint tapes.
479      -- load_fields_driver.F : add call to CTRL_MAP_GENTIM2D( myTime, myIter, myThid )
480      -- add xx_gentim2d0/1 in ctrl_ad_check_lev1_dir.h checkpoint_lev1_directives.h etc
481      -- use ctrl_swapffields.F (new) instead of exf_SwapFFields.F in ctrl_get_gen.F
482    o model/src:
483      - account for moist thermodynamics in (dry) potential temperature equation;
484        update results of experiments: aim.5l_cs (x2), fizhi-cs (std + aqualev)
485        and cpl_aim+ocn.
486      - also switch to standard compiler (gfortran, was using ifort previously)
487        for fizhi-cs experiments reference output.
488    o pkg/ctrl:
489      - 1st step toward generic time-varying control variable (2D) via CPP option
490        ALLOW_GENTIM2D_CONTROL
491      - note new namelist ctrl_nml_genarr in data.ctrl
492    o verification/global_ocean.cs32x15:
493      - switch off OLD_THSICE_CALL_SEQUENCE (both forward and AD code) to use new
494        thsice calling sequence and update "output.icedyn.txt" output file.
495    o pkg/ptracers:
496      - from Ryan A.: code to allow to restart a tracer at regular time interval
497        specifying a reset frequency and a reset-phase (for each tracers).
498    o pkg/thsice:
499      - implement new sequence of calls for thsice+seaice:
500          previously:   ice-Dyn,ice-Advect,ice-Thermo(thsice)
501          new sequence: ice-Thermo(thsice),ice-Dyn,ice-Advect
502      - allows (with temporary CPP option "#define OLD_THSICE_CALL_SEQUENCE"
503        in CPP_OPTIONS.h) to recover old sequence;
504      - update diagnostics for Intermediate State thsice diagnostics: now filled
505        just before advection (instead of just after advection in old sequence);
506      - update output of experiment offline_exf_seaice (standard test);
507      - in global_ocean.cs32x15 exp., postpone output.icedyn.txt update
508        by setting #define OLD_THSICE_CALL_SEQUENCE in CPP_OPTIONS.h
509    o pkg/aim_v23:
510      - use tiled array for aim_CO2 and surface wind speed for export to coupler;
511      - use standard pkg/mdsio routines to read & write CO2 pickup file;
512      - in-line S/R AIM_AIM2DYN_EXCHANGES in aim_do_physics.F;
513      - Implement new sequence of calls for seaice advection (with thsice and
514        seaice diffusion): do ice advection after ice-Thermodynamic (previously
515        was done before); change aim_do_physics.F (split the bi,bj loops block);
516      - use same CPP option (OLD_THSICE_CALL_SEQUENCE) to recover old sequence;
517    o pkg/thsice:
518      - add a missing EXCH of sIceLoad in thsice_main.F (ocean set-up) for the case
519        where just seaice diffusion is used without seaice-dynamics.
520    
521    checkpoint64c (2013/01/18)
522    o pkg/seaice:
523      - add a parameter JFNKres_tFac that can replace JFNKres_t
524        (= JFNKres_tFac*JFNKresidual before JFNK solver)
525      - add a line search option to the JFNK solver
526      - move update of u/vIce and computation of initial residual into a separate
527        routine (same file); makes the code a little easier to read (?)
528      - the line search requires computation of the residual and for some reason
529        I cannot do the update of u/vIce at the beginning of the Newton loop
530        without changing the results, so we move computation of the new residual
531        also to the end of the Newton loop, even without the line search
532    o pkg/mdsio:
533      - write missing value (corresponding to undefined array value) to meta files;
534        skip this if missing value is one (UNSET_RL would be a better value for the
535        case of undefined missing value but it's current the default missing-value);
536        Also update mdsio_read_meta.F (reading timeInterval & missing-value).
537    o pkg/exf & thsice:
538      - for diagnostics purpose, fill-up and update Qsw array (+ fill the
539        diagnostics) even when SHORTWAVE_HEATING is #undef;
540    o verification/cfc_example:
541      - turn on pkg/layers with pkg/diagnostics (to test pkg/layers and to
542        illustrate how to use it).
543    o verification/offline_exf_seaice:
544      in input: add SEAICErestoreUnderIce=.TRUE., and reduce size of forcing
545        files to only one time-record.
546      in input.thermo: narrow the 2 bands of low initial ice-concentration near
547        N & S edges; switch on SEAICErestoreUnderIce=T; use pkg/diagnostics for
548        snapshot output; same mcPheePiston value as in thsice with
549        surf-current=0.2m/s.
550      in input.thsice: similar set-up as in input.thermo (channel with same seaice
551        initial conditions).
552    o verification/cfc_example:
553      - update file "data" with more standard choice (default rotationPeriod,
554        exactConserv=T, reduce ivdc_kappa to 10, remove multiDimAdvection=F,
555        set deltaTFreeSurf to deltaTtracer) and update the output.
556    o pkg/layers:
557      - fix bolus part so that it compiles with #undef GM_BOLUS_ADVEC;
558      - ensure that "layers_bolus" is switched to False when useGMRedi=False.
559    o verification/offline_exf_seaice:
560      - set all {field}period to zero for constant-in-time forcing (not tested
561        anywhere else).
562  o verification/offline_exf_seaice:  o verification/offline_exf_seaice:
563    - dyn_lsr  : use pkg/seaice S/R (instead of pkg/thsice) to advect sea-ice;    - dyn_lsr  : use pkg/seaice S/R (instead of pkg/thsice) to advect sea-ice;
564    - dyn_jfnk : use pkg/thsice S/R (instead of pkg/seaice) to advect sea-ice.    - dyn_jfnk : use pkg/thsice S/R (instead of pkg/seaice) to advect sea-ice.

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