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revision 1.1774 by mlosch, Fri Nov 23 15:54:18 2012 UTC revision 1.1911 by jmc, Tue Aug 13 15:15:38 2013 UTC
# Line 4  $Name$ Line 4  $Name$
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    checkpoint64m (2013/08/13)
8    o model/inc:
9      - move FCORI_MACROS.h from PARAMS(_MACROS).h to GRID_MACROS.h (left from
10        8 yrs ago modif when Coriolis arrays were moved from PARAMS.h to GRID.h)
11    o pkg/kpp & aim_v23:
12      - only call DIAGNOSTICS_FILL when useDiagnostics=TRUE.
13    o pkg/seaice:
14      - restore (last time on 2011/12/24) ability to compile pkg/seaice with
15        undefined pkg/exf ALLOW_ATM_TEMP or ALLOW_RUNOFF CPP-options.
16      - only call DIAGNOSTICS_FILL when useDiagnostics=TRUE.
17    o eesupp/src:
18      - fix check for overlap-size argument (myOLn.GT.MAX_OLY_EXCH)
19        in exch1_rx[_ad].template (thanks to Francois Lefeuvre report).
20    o switch to TAF version-2:
21      - add flow directives to "freeze" naming convention for ad-routines that
22        are used in I/O routines of adjoint state and associated common blocks
23        that are used in adcommon.h (backward compatible with version-1)
24      - update all ad-optfiles (in tools/adjoint_options + few local to some
25        verification exp) to switch to latest TAF version (currently 2.5.5);
26        merge "*_mpi" adoptfiles into the corresponding non-mpi (but commented
27        out except for diva).
28      - the major change with TAF version-2 is that both the differentiated
29        routines and the forward routines (new) are returned as part of the TAF
30        output source code. Update genmake2 accordingly.
31      - new output for AD experiment tutorial_global_oce_biogeo (better AD gradient
32        with version-2 when compared to TLM or FWD gradient); other experiments
33        output show minor changes (machine truncation level); update the few AD &
34        TLM output with 12 matching digits only (some prior to version-2 switch).
35    
36    checkpoint64l (2013/08/05)
37    o model/src:
38      - in dynamics.F, skip the call to CALC_VISCOSITY if momViscosity=F
39      - main_do_loop.F: no longer includes additional (AUTODIFF) header files
40        when using TAF but only if using OpenAD.
41    o pkg/mom_common+fluxform+vecinv:
42      - always set horiz. viscosity arrays to background value before calling
43        MOM_CALC_VISC (in MOM_FLUXFORM & MOM_VECINV) and call S/R MOM_CALC_VISC
44        only when using variable horiz. viscosity (useVariableVisc=T);
45      - simplify mom_vecinv.F (only 1 block for momViscosity).
46    o pkg/mom_common: variable horiz. viscosity in NH code
47      - move horiz-viscosity 3-D arrays viscAh_W & viscA4_W (used in calc_gw.F)
48        from model/inc/NH_VARS.h to pkg/mom_common/MOM_VISC.h
49      - store in common block (in MOM_VISC.h) logical parameters: useHarmonicVisc,
50        useBiharmonicVisc & useVariableVisc.
51      - fix old bug (already in 1rst implementation of variable horizontal viscosity
52        in calc_gw.F, version 1.27, 2006/06/20):
53        horizontal bi-harmonic viscosity in gW was missing when wiscA4W=0
54        even if variable bi-harmonic viscosity (e.g., viscA4Grid) was non-zero.
55      - change background horiz viscosity in vertical momentum (gW) to always be
56        viscAhW,viscA4W (instead of switching to viscAhD, viscA4D when using
57        any type of variable viscosity, e.g., viscAh/4Grid)
58      - change default value of viscAhW,viscA4W to viscAhD,viscA4D (instead of
59        viscAh,viscA4) which default to viscAh,viscA4 :  this avoid missing
60        horiz. viscosity in W eq when just setting viscAhD/Z,viscA4D/Z (since
61        default viscAh,viscA4 is zero).
62    o model/src:
63      - extend length of drC & recip_drC from Nr to Nr+1.
64    o Divided Adjoint (DIVA) with MPI:
65      - genmake2: do not create local ./mpi_headers dir when no file to copy into.
66      - remove option ALLOW_DIVIDED_ADJOINT_MPI (replaced by ALLOW_DIVIDED_ADJOINT
67        and ALLOW_USE_MPI) from model/src code and from ECCO_CPPOPTIONS.h.
68    
69    checkpoint64k (2013/07/23)
70    o tools/OAD_support:
71      - avoid the need for file "oadtempflile" in insertTemplateDir.bash
72        and remove it from genmake2.
73    o tools/build_options:
74      - remove MPI_HEADER_FILES_INC setting (no longer used) and comment out
75        MPI_HEADER_FILES list (let genmake2 find the missing headers)
76    o verification/halfpipe_streamice:
77      - change to driving stress formulation; update both Fwd & AD output.
78    o tools/genmake2 and Divided Adjoint with MPI:
79      - remove default setting of MPIINCLUDEDIR from $MPIHOME (always been broken);
80      - only create local ./mpi_headers dir if using MPI and MPIINCLUDEDIR is set;
81      - add new variable (LOCAL_MPI_HEADERS, replace MPI_HEADER_FILES_INC) in
82        Makefile, which is set by genmake2, and check which mpi-headers are needed.
83        Note: need to update adjoint_options/adjoint_diva_mpi accordingly.
84      - update target "CLEAN" (to also remove ./mpi_headers/ dir).
85    o testreport:
86      - changes for Divided Adjoint Run: when file "run_ADM_DIVA" is present,
87        perform additional runs (number of additional runs is "add_DIVA_runs" taken
88        from file run_ADM_DIVA ; should match "nchklev_3" in file "code_ad/tamc.h").
89    o verification/lab_sea (AD test):
90      - change to test Divided Adjoint Run in this set-up (both standard AD test
91        and 2 secondary AD test: noseaice + noseaicedyn); drop the evp AD test.
92    o pkg atm_ & ocn_compon_interf:
93      - remove cpl_earlyExpImpCall=F option (was mainly a hack added for the old
94        staggerTimeStep implementation) and disable (retired) corresponding
95        parameter.
96    o pkg/offline:
97      - comment out unused field-array: ICEM, ConvectCount, hflx[01], icem[01];
98      - add S/R OFFLINE_CHECK to print offline parameter summary
99        and stop if loading a file that is not used;
100      - enable to calculate GMRedi tensor, KPP mixing and convective index
101        when the corresponding file(s) is/are not specified (but pkg is used).
102      - comment out resetting of monitorFreq (to endTime) since it still useful
103        for monitoring CFL numbers and checking offline fields.
104    o OpenAD:
105      - do not define OAD_DEBUG (in tools/adjoint_options/adjoint_oad) to get
106        smaller standard output) and generate new (smaller) output (on baudelaire
107        using gfortran with -ieee) for exp. tutorial_tracer_adjsens
108    o model/src:
109      - call EXTERNAL_FORCING_SURF outside bi,bj loops (in do_oceanic_phys.F),
110        (where external_forcing_adjust was called) and change list of arguments;
111      - merge external_forcing_adjust.F into external_forcing_surf.F
112      - put surface relaxation of SST & SSS in new S/R (forcing_surf_relax.F)
113        which also contains balancing surface relaxation (ALLOW_BALANCE_RELAX,
114        previously in file "balance_relax.F", now removed); remove corresponding
115        arrays in FFIELDS.h.
116      - EXTERNAL_FORCING_SURF is now called when using pkg/offline; implement
117        a hack for getting back surfaceForcingS (loaded from file) when using
118        ALLOW_OLD_VIRTUALFLUX (pkg/dic, in DIC_OPTIONS.h) in offline set-up.
119      - update output of AD test experiment global_ocean.cs32x15.seaice_dynmix
120        (was getting only 11 digits for AD-grad, due to different truncation
121         error in AD code).
122    
123    checkpoint64j (2013/07/04)
124    o pkg/offline:
125      - to enable the use of other features with pkg offline (e.g., obcs),
126        also call S/R DO_OCEANIC_PHYS in offline run - more modifs to come.
127      - comment out "allowFreezing" (now active) in 2 offline testing exp.
128    o pkg/exf ALLOW_RUNOFTEMP
129      - fix sign and make compatible with temp_EvPrRn .NE. UNSET_RL
130      - ahdded RUNOFTEMP test to verification/global_ocean.cs32x15/input.seaice
131      - changes verification/global_ocean.cs32x15/results/output.seaice.txt
132    o pkg/atm_phys:
133      - allows to add some damping on uVel,vVel (strength only function of k).
134    o verification, ad-tests:
135      - reduce length of the simulation for AD test: global_ocean.cs32x15.seaice,
136        global_ocean_ebm and offline_exf_seaice.thsice.
137    o verification/halfpipe_streamice:
138      - found a bug in s/r pkg/streamice/streamice_advect_thickness which caused
139        flux input boundary conditions to be ignored; a fix for this bug changed
140        verification results for forward test.
141      - add adjoint test.
142    o pkg/ptracers:
143      - allow to restart without SOM pickup (resetting SOM to zero).
144    o pkg/gmredi:
145      - New parameterisation for the calculation of K and (GM_PsiX,GM_PsiY) added.
146      - It uses mixing length theory and suppression by steering level effects to
147        calculate a diffusivity used in the Redi tensor (see Bates et al., submitted
148        to JPO, for more details).
149      - It also uses the diffusivity to calculate an eddy induced streamfunction
150        based on a PV closure (rather than a buoyancy closure as in GM).
151      - New files added to pkg/gmredi:
152        gmredi_k3d.F calculates the diffusivity for the Redi tensor and the eddy
153          induced overturning streamfunction (called from gmredi_calc_tensor)
154        gmredi_calc_eigs.F calculates the eigenvalues and eigenvectors required
155          for use in gmredi_k3d
156        gmredi_calc_urms.F calculates the the rms eddy velocity used to calculate
157          the eddy diffusivity
158    
159    checkpoint64i (2013/06/18)
160    o pkg/cheapaml:
161      - take src files from MITgcm_contrib/verification_other/offline_cheapaml/code
162        that enable the use of seaice (pkg/thsice thermo & pkg/seaice dynamics)
163        with pkg/cheapaml.
164    o utils/python: add subpackage for cubed sphere function, first example is
165        simple cs.pcol to plot 2D fields on a map
166    o pkg/streamice:
167      - This is a new package in MITgcm, which solves dynamic equations for ice
168         sheets and ice streams
169      - At the moment it is independent of atmosphere/ocean dynamics, or any
170        other physical packages in MITgcm, even ShelfIce (although it is anticipat-
171        ed that this will change)
172      - There is a new verification exercise that tests it, halfpipe_streamice,
173        evolves a 40x80 km ice stream/ice shelf (at coarse resolution) in a
174        rectangular embayment
175      - halfpipe_streamice is forward-only for now, will have TAF test soon
176      - for questions, email dgoldber@mit.edu
177    o pkg/thsice:
178      - fix filling of snow-precip diagnostic (SIsnwPrc) (left from the removing
179        of snowPrc from common bloc, on May 2nd, thsice_step_fwd.F revision 1.40);
180      - remove diagnostics 'SI_FrcFx' ( now identical to 'SI_Fract' with new
181         call sequence: ice-Thermo(thsice),ice-Dyn,ice-Advect );
182      - allow precip from pkg/cheapaml to make snow over seaice.
183    o pkg/cfc:
184      - move in separated header file (CFC_ATMOS.h) time-serie arrays of Atmos CFC
185      - remove atmos CFC 2-D arrays from common bloc (now local variables)
186      - change some hard-coded constant to run time parameter for reading and
187        and interpolating atmospheric CFC ; keep same default as previously.
188      - more flexible reading of Atmos CFC (number of records no longer hard-coded)
189      - put arguments in standard order: myTime, myIter, myThid
190      - use standard S/R GET_PERIODIC_INTERVAL for time interpolation of
191        atmospheric CFC ; fix for the case myIter < PTRACERS_iter0.
192      - fix calculation of surf tendencys for partial-cell and/or Non-Lin Free-Surf
193      - new routine to print summary of CFC params and check for consistency.
194    o pkg/seaice: add uice/vice to the parameter list of s/r seaice_advdiff,
195      similar to thsice_advdiff.
196      Note that for the B-grid case the routine parameters uc/vc are overwritten.
197    o pkg/cfc:
198      - change time interpolation for atmospheric CFC-11 (now same as for CFC-12);
199        update output (CFC-11) of experiment cfc_example and tutorial_cfc_offline.
200      - fix interpolation of atmphspheric CFC between Sorthern and Northern
201        hemisphere value.
202    o pkg/seaice:
203      - allow to use seaice dynamics without pkg/exf (e.g., using pkg/cheapaml)
204    o pkg/seaice: add Adams-Bashforth2 time discretization for ice dynamics;
205                  so far only for JFNK-solver, turn on with SEAICEuseAB2 = .TRUE.
206      - requires an additional time level that is stored in the pickup
207      - you can start with AB2 from a pickup without this time level with
208        pickupStrictlyMatch = .false.
209    
210    checkpoint64h (2013/05/26)
211    o pkg/cheapaml:
212      - replace one ()**.5 with SQRT + use temp var "cdu = tau/Du" (coare3_flux);
213        affect machine truncation (but exp cheapAML_box still pass with 13 digits).
214      - consistent treatment of uWind,vWind location: assume everywhere in
215        pkg/cheapaml that they are on C-grid (@ uVel,vVel location)
216        (Note: was already the case for Tair,Qair advection);
217        add option (INCONSISTENT_WIND_LOCATION) to recover old results.
218      - compute diabatic forcing only in the interior (excluding overlap regions)
219      - fill in array "Qsw" (for short-wave heating);
220      - add diagnostic for precip ; fill-in diagnostics for cheapAML state vars
221        before any update (consistent with MITgcm state var diagnostics);
222      - cheapaml_fields_load.F & cheapaml_init_varia.F : only fill outer edges if
223        non periodic ; + adjusted for uWind,vWind (C-grid).
224    o pkg/seaice:
225      - remove dependence of pkg/seaice versus pkg/exf (file: pkg/pkg_depend) and
226        add explicitly pkg/exf in experiments that currently use pkg/seaice.
227      - allows to compile pkg/seaice without pkg/exf.
228    o tools/OAD_support:
229      - use a local copy (ourRWCPinBd) to ensure index ourRWCP stays within bounds
230        of array "ourStepOf" in function rvNextAction (revolve.F90).
231    o pkg/aim_compon_interf renamed to pkg/atm_compon_interf
232      - change pkg name (to be used with other atmospheric physics pkg)
233        but by-pass CVS when making the new pkg so that we keep the CVS history.
234    o pkg/offline:
235      - call OFFLINE_FIELDS_LOAD from pkg/offline/offline_init_varia.F
236        (previously called from pkg/dic_surfforcing_init.F)
237    o model/src:
238      - re-order sequence of calls within packages_init_variables.F, using
239        standard order, except for:
240         DIAGNOSTICS_INIT_VARIA and OFFLINE_INIT_VARIA (called @ the top),
241         CTRL_MAP_INI and OBCS_INIT_VARIABLES (called @ the bottom)
242    o new pkg: atm_phys
243      - add entry point and source code (previously in contrib
244          verification_other/atm_gray/code_gray/) for new pkg "atm_phys"
245        (atmospheric physics pkg from P. O'Gorman and T. Schneider, JCl, 2008).
246      - re-order sequence of calls within packages_readparms.F,
247         packages_init_fixed.F and packages_write_pickup.F
248        (but skip packages_init_variables.F because of TAF issues).
249      - update contrib/*/atm_gray/ experiment.
250    o pkg/seaice (ITD code):
251      - simplify and fix the writing of pickup-files for ITD case
252    o pkg/seaice (ITD code):
253      - introduce floe size dependent lateral melt for ITD case;
254      - cleaning (avoid division by zero, change to f77 syntax, remove tabs)
255      - update seaice_itd experiment main output.
256    o pkg/thsice:
257      - remove snowPrc from common block THSICE_FLUX, in THSICE_VARS.h and
258        declared it locally (without bi,bj) in thsice_main.F & aim_do_physics.F;
259        changed accordingly pkg/atm2d.
260    
261    checkpoint64g (2013/05/01)
262    o pkg/exf ALLOW_RUNOFTEMP
263      - if defined,  river and glacier runoff temperature can be read-in from
264        runoftempfile; runoftempfile needs to have same format as runofffile
265    o pkg/thsice (& pkg/bulk_force):
266      - In case Energy-Reference-Level (ERL) is used (temp_EvPrRn=0), account
267        for energy content of Precip + RunOff & Evap (like with pkg/exf).
268      - change computation domain to always be the interior (without overlap).
269      - fix bug (wrong overlap) when using EXF and stressReduction > 0.
270    o verification/tutorial_global_oce_biogeo:
271      - add preliminary OpenAD setup (still has problems)
272    o pkg/seaice:
273      - turn some parameters for choosing the convergence criterion of
274        the inexact Newton method (JFNK) into runtime parameters for convenience
275      - clean up seaice_calc_viscosities.F: remove/retire two options for
276        SEAICetaZmethod (1,2), introduce area weighting for method 3; this changes
277        the results of lab_sea/input because a division has been replaced by
278        a multiplication with the reciprocal (sumNorm)
279      - modify offline_exf_seaice/input.dyn_jfnk/data.seaice to improve
280        convergence of solver (changes results, of course), and to test some
281        new features
282    o model/src:
283      - remove unused (since Aug 2006) S/R SET_WRITE_GLOBAL_PICKUP and its call.
284      - remove unused forcing field "dQdT" and associated parameter "dQdTFile".
285      - move forcing adjustment (balancing surface forcing) in specific S/R
286        where might also be applied exchanges (if needed) to forcing arrays.
287    o pkg/shelfice:
288      - allow to specify the Ice-Shelf mass per unit area (instead of
289        shelficeLoadAnomaly) and do the conversion from one to the other
290      - move loading from file of shelficeLoadAnomaly from SHELFICE_INIT_VARIA
291        to SHELFICE_INIT_FIXED: (a) avoid some TAF recompution issues and
292        (b) will be loaded in time (before calling INI_PRESSURE) in case it is
293        needed in phi0surf for initial pressure calculation when useDynP_inEos_Zc
294      - update isomip experiment forward output (get machine truncation error
295        from conversion shelficeLoadAnomaly -> shelficeMass -> shelficeLoadAnomaly)
296    o verification/offline_exf_seaice:
297      revise data.seaice in input.thermo and input_ad and update results accordingly
298        HO = 0.2, SEAICE_areaLossFormula = 2,
299        SEAICE_growMeltByConv = .TRUE.,
300        SEAICE_doOpenWaterMelt = .TRUE.,
301      Improve consistency with input.thsice and fix the spurious 500m ice corners
302    o verification/global_ocean.cs32x15:
303      - set Energy Reference Level to liq. water @ 0 degC: temp_EvPrRn=0.,
304        in icedyn (thsice+seaice-dyn) test and update output.
305    o verification/offline_exf_seaice:
306      - adjust list of tested variables (with testreport) and update
307        standard test output with better slection of monitored fields.
308    o pkg/cd_code:
309      - swtich off Adams-Bashforth on the 1rst iteration. Update output of
310        experiment lab_sea.hb87
311    o tools/genmake2:
312      - change default makedepend from the system default to tools/xmakedepend:
313        When no makedepend is specified, select tools/xmakedepend it the test pass,
314        otherwise select the system default (if exist and pass the test) or
315        try to build cyrus-makedepend ; stop if none of the 3 works.
316    o pkg/exf & pkg/thsice:
317      - In case Energy-Reference-Level (ERL) is used (temp_EvPrRn=0), account
318        for energy content of Precip + RunOff & Evap. Assumes:
319       1) Rain has same temp as Air.
320       2) Snow has no heat capacity (consistent with seaice & thsice pkgs)
321       3) Run-Off comes at the temp of surface water (with same Cp)
322       4) Evap over ocean is released to the Atmos @ surf-temp (=SST); should be
323        put directly into Latent Heat flux & should use water-vapor heat capacity.
324       5) Evap over snow/seaice (pkg/thsice) assumes constant Lf+Lv (consistent
325        with snow having no Cp) => water vapor is released to Atmos @ 0^oC (=ERL).
326    o pkg/seaice: simplify the use of CPP flags in JFNK-related files
327        (compile when SEAICE_ALLOW_JFNK is defined)
328    o pkg/thsice:
329      - fix oceanic flux diagnostics & timeave (left from new sequence of calls
330        implementation): move THSICE_AVE call after the advection (called directly
331        from thsice_do_advect.F).
332    o verification/global_ocean.90x40x15 and OpenAD:
333      New experiment for OpenAD is identical to the one in input_ad except that
334        multiDimAdvection=.FALSE.,
335      There is still an issue with this.
336    o pkg/thsice:
337      - account for ice velocity (ocean relative velocity) in turbulent heat flux
338        at the base of the ice; update output of global_ocean.cs32x15 (icedyn)
339        and offline_exf_seaice (main test).
340    
341    checkpoint64f (2013/03/31)
342    o verification/OpenAD:
343      - new (smaller, without OAD_DEBUG) output_oadm.txt generated using gfortran.
344    o verification/isomip, pkg/shelfice and OpenAD:
345      - add OpenAD setup to this exp and make shelfice package work with OpenAD
346    o verification/tutorial_global_oce_biogeo:
347      - update AD and TLM output after turning off ALLOW_FE (in DIC_OPTIONS.h)
348    o verification/offline_exf_seaice:
349      - replace adjoint experiment (now similar to fwd input.thermo/ setup).
350    o verification/tutorial_tracer_adjsens, pkg/ptracers and OpenAD:
351      - add OpenAD setup to this exp and make ptracers package work with OpenAD
352    o pkg/seaice/seaice_evp.F:
353       mask the asymmetric contribution of the ice-ocean stress (when
354       the turningAngle is non-zero) over open water to avoid stripes
355       in the EVP-solutions after many EVP-substeps. This does not change
356       the verification experiment (because turningAngle=0 in that experiment),
357       but will affect other EVP solutions with turningAngle.ne.0
358    o verification, AD & TLM output:
359      - new TAF version 2.3.10 (previously 2.3.8) add more parenthesis in multiple
360        additions and multiplications which affect results at machine truncation
361        level. Update few AD output (1D_ocean_ice_column, bottom_ctrl_5x5,
362        lab_sea.noseaicedyn & offline_exf_seaice) and TLM output
363        (1D_ocean_ice_column & tutorial_tracer_adjsens.som81) which had only 12
364        digits of matching.
365    o pkg/seaice:
366       modify lsr-algorithm so that it vectorizes AND converges by using a
367       "zebra" method: split vector loop into two with step size 2; this
368       solves a general convergence problem for the JFNK solver on a vector
369       computer. It has the potential to even improve convergence for
370       non-vector machines, but it does change the results so it is turned
371       off by default. To turn on define CPP-flags SEAICE_VECTORIZE_LSR and
372       SEAICE_VECTORIZE_LSR_ZEBRA in SEAICE_OPTIONS.h
373    
374    checkpoint64e (2013/03/05)
375    o pkg/ecco and several verification experiments:
376       Remove special versions of the_model_main.F, the_main_loop.F, forward_step.F
377       from ecco package, and revert to unified routine in model/src/
378       Adjust verification experiments accordingly, especially gloal_oce_llc90
379       Should conclude long-standing work by Gael to reconsile the_main_loop with
380       ECCO and will enable OpenAD's revolve loop in ECCO setup.
381    o pkg/generic_advdiff:
382      - implement compressible flow method for multi-dim advection (similar to
383        gad_som_advect.F); add new option "GAD_MULTIDIM_COMPRESSIBLE" (since
384        TAF generates many recomputations) to use it; no yet coded with implicit
385        vertical advection.
386      - change experiment advect_cs (new output) and advect_xy (same output)
387        to test compressible flow multi-dim advection.
388    o pkg/generic_advdiff:
389      - fix SOM advection for unusual cases (linear Free-Surf in r*, other
390        cases where linear Free-Surf is not @ k=1, e.g., useShelfIce)
391    o pkg/seaice:
392      - fix bug in the no-slip implementation in seaice_calc_strainrates.F, this
393        bug affects two verification experiments (lab_sea and lab_sea.hb87),
394        recover old (wrong) results by setting noSlipFac = 2. in
395        seaice_calc_strainrates.F;
396      - add another averaging method for etaZ (etaZmethod=3), a mix of 2 and 0
397      - add runtime parameter SEAICE_JFNKepsilon for that finite difference
398        gradient in the Jacobian times vector operation (s/r seaice_jacvec)
399      - fix line search in seaice_jfnk.F (s/r seaice_jfnk_update)
400    o pkg/seaice: reorganize seaice_lsr.F to be able to reuse more code:
401      - new subroutines seaice_lsr_tridiagu/v
402      - introduce loop bounds i/jmin/max to be able to use a restricted
403        additive Schwarz method, but not used for now.
404      - rename SEAICE_CALC_LSR_COEFFS into SEAICE_LSR_CALC_COEFFS
405      - use new subroutines seaice_lsr_tridiagu/v in s/r seaice_preconditioner
406    o OpenAD support
407       Reorganize S/R call for overall time-stepping loop to facilitate
408       OpenAD revolve loop replacement
409       (new S/R main_do_loop.F)
410    o model/src:
411      - add 3-D array 3rd dimension to argument list of S/R ADAMS_BASHFORTH2/3;
412      - pkg/cheapaml: remove local S/R ADAMS2d and use instead standard S/R
413        ADAMS_BASHFORTH2.
414    o pkg/cheapaml:
415      - add new parameter (default=F, same as before) to disable full domain
416        (including land) periodicity in X & Y dir.
417      - new S/R CHEAPAML_COPY_EDGES to copy relaxation field into edges of
418        prognostics field ; merge the 2 S/R cycle_2d_tracer and timestep_2d_tracer
419        into single S/R CHEAPAML_TIMESTEP.
420    
421    checkpoint64d (2013/02/17)
422    o pkg/monitor (angular momentum):
423      - do not add Eta contribution to the total AM if using rigid-lid;
424      - correct for Adams-Bashforth in zonal-wind part (instead of in AM_eta).
425      - horizontal discretisation: compute Zonal wind contribution separately for
426        each component (instead of from cell centered averaged) and use the 4
427        grid-cell corner averaged value of Omega*(R*cos_Phi)^2 in AM_eta part.
428      - Check that AM is conserved with linear dynamics (momAdvection=F and linear
429        FreeSurf) if using vectorInvariant momentum.
430    o model/src (horizontal grid):
431      - move initialisation of all horizontal grid arrays to null value
432        from specific horizontal grid S/R to main S/R INI_GRID;
433      - add 2 new arrays to project model C-grid velocity on to zonal direction
434        (similar to AngleCosC & -AngleSinC but at U and V point location) and
435        compute them in S/R CALC_GRID_ANGLES.
436    o pkg/seaice: replace a hard coded parameter by a runtime parameter
437        SEAICE_JFNK_tolIter
438    o pkg/seaice: introduce a restricted additive Schwarz (RAS) method in
439        preconditioner for JFNK (run LSR into the overlaps as far as possible,
440        i.e OLx/y-2, but overwrite the solution in the overlaps)
441      - extend loop range in seaice_calc_viscosity
442      - add new parameters SEAICE_OLx/y (default = OLx/y-2)
443      - add flexible loop ranges to seaice_preconditioner, seaice_calc_lsr_coeffs
444      - slightly modify loops in tridiagonal solver lsr-preconditioner
445      - by default remove the extra exchange in seaice_preconditioner with a
446        replacement of an undocumented CPP flag by SEAICE_PRECOND_EXTRA_EXCHANGE
447      - modify offline_exf_seaice so that old results without RAS are reproduced
448        for output.dyn_jfnk.txt
449      in seaice_fgmres.F (unrelated to RAS)
450      - add a cpp-flag option for a re-ordered mapping (potentially more
451        efficient), but because this changes the results, turn it off by
452        default
453      - replace the save statement by local common blocks
454    o utils/matlab:
455      - fix tile-offset in rdmnc.m when output was produced using EXCH2.
456      - update cs_grid/bk_line scripts to use load_grid.m (in utils/matlab)
457        instead of local script "load_cs.m".
458    o pkg/seaice:
459      - fix a serious bug in seaice_fgmres.F, s/r seaice_scalprod, connected
460        to the scalarProductMetric and the unrolling. By chance this does not
461        change the verification experiment, because of the particular domain
462        decomposition
463    o pkg/diagnostics:
464      - change default missing_value from UNSET_RL to -999.
465    o pkg/layers: improve vectorization of layers_fluxcalc.F
466      - step 1: split loops, make TatU/V 2D arrays. This alone reduces the cpu
467        time spent in this routine by more than a factor of 3 on an NEC-SX8
468      - step 2: replace search algorithm by a bisection algorithm found in
469        Press et al. Numerical Recipes in Fortran. This algorithm can be
470        vectorized and finds the correct bin in approx. log2(Nlayers) steps.
471        For now, use this algorithm only for TARGET_NEC_SX defined.
472      - moved the search algorithm into a separate subroutine, that is kept
473        within the same file for automatic inlining.
474      - modified catching potential errors
475    o pkg/ecco:
476      - add compile switches ALLOW_SHALLOW_ALTIMETRY and ALLOW_HIGHLAT_ALTIMETRY.
477    o model/src, pkg/autodiff, pkg/ctrl, pkg/grdchk :
478      - modifications for ALLOW_GENTIM2D_CONTROL
479      -- forward_step.F, the_main_loop.F : pass options and arrays for adjoint tapes.
480      -- load_fields_driver.F : add call to CTRL_MAP_GENTIM2D( myTime, myIter, myThid )
481      -- add xx_gentim2d0/1 in ctrl_ad_check_lev1_dir.h checkpoint_lev1_directives.h etc
482      -- use ctrl_swapffields.F (new) instead of exf_SwapFFields.F in ctrl_get_gen.F
483    o model/src:
484      - account for moist thermodynamics in (dry) potential temperature equation;
485        update results of experiments: aim.5l_cs (x2), fizhi-cs (std + aqualev)
486        and cpl_aim+ocn.
487      - also switch to standard compiler (gfortran, was using ifort previously)
488        for fizhi-cs experiments reference output.
489    o pkg/ctrl:
490      - 1st step toward generic time-varying control variable (2D) via CPP option
491        ALLOW_GENTIM2D_CONTROL
492      - note new namelist ctrl_nml_genarr in data.ctrl
493    o verification/global_ocean.cs32x15:
494      - switch off OLD_THSICE_CALL_SEQUENCE (both forward and AD code) to use new
495        thsice calling sequence and update "output.icedyn.txt" output file.
496    o pkg/ptracers:
497      - from Ryan A.: code to allow to restart a tracer at regular time interval
498        specifying a reset frequency and a reset-phase (for each tracers).
499    o pkg/thsice:
500      - implement new sequence of calls for thsice+seaice:
501          previously:   ice-Dyn,ice-Advect,ice-Thermo(thsice)
502          new sequence: ice-Thermo(thsice),ice-Dyn,ice-Advect
503      - allows (with temporary CPP option "#define OLD_THSICE_CALL_SEQUENCE"
504        in CPP_OPTIONS.h) to recover old sequence;
505      - update diagnostics for Intermediate State thsice diagnostics: now filled
506        just before advection (instead of just after advection in old sequence);
507      - update output of experiment offline_exf_seaice (standard test);
508      - in global_ocean.cs32x15 exp., postpone output.icedyn.txt update
509        by setting #define OLD_THSICE_CALL_SEQUENCE in CPP_OPTIONS.h
510    o pkg/aim_v23:
511      - use tiled array for aim_CO2 and surface wind speed for export to coupler;
512      - use standard pkg/mdsio routines to read & write CO2 pickup file;
513      - in-line S/R AIM_AIM2DYN_EXCHANGES in aim_do_physics.F;
514      - Implement new sequence of calls for seaice advection (with thsice and
515        seaice diffusion): do ice advection after ice-Thermodynamic (previously
516        was done before); change aim_do_physics.F (split the bi,bj loops block);
517      - use same CPP option (OLD_THSICE_CALL_SEQUENCE) to recover old sequence;
518    o pkg/thsice:
519      - add a missing EXCH of sIceLoad in thsice_main.F (ocean set-up) for the case
520        where just seaice diffusion is used without seaice-dynamics.
521    
522    checkpoint64c (2013/01/18)
523    o pkg/seaice:
524      - add a parameter JFNKres_tFac that can replace JFNKres_t
525        (= JFNKres_tFac*JFNKresidual before JFNK solver)
526      - add a line search option to the JFNK solver
527      - move update of u/vIce and computation of initial residual into a separate
528        routine (same file); makes the code a little easier to read (?)
529      - the line search requires computation of the residual and for some reason
530        I cannot do the update of u/vIce at the beginning of the Newton loop
531        without changing the results, so we move computation of the new residual
532        also to the end of the Newton loop, even without the line search
533    o pkg/mdsio:
534      - write missing value (corresponding to undefined array value) to meta files;
535        skip this if missing value is one (UNSET_RL would be a better value for the
536        case of undefined missing value but it's current the default missing-value);
537        Also update mdsio_read_meta.F (reading timeInterval & missing-value).
538    o pkg/exf & thsice:
539      - for diagnostics purpose, fill-up and update Qsw array (+ fill the
540        diagnostics) even when SHORTWAVE_HEATING is #undef;
541    o verification/cfc_example:
542      - turn on pkg/layers with pkg/diagnostics (to test pkg/layers and to
543        illustrate how to use it).
544    o verification/offline_exf_seaice:
545      in input: add SEAICErestoreUnderIce=.TRUE., and reduce size of forcing
546        files to only one time-record.
547      in input.thermo: narrow the 2 bands of low initial ice-concentration near
548        N & S edges; switch on SEAICErestoreUnderIce=T; use pkg/diagnostics for
549        snapshot output; same mcPheePiston value as in thsice with
550        surf-current=0.2m/s.
551      in input.thsice: similar set-up as in input.thermo (channel with same seaice
552        initial conditions).
553    o verification/cfc_example:
554      - update file "data" with more standard choice (default rotationPeriod,
555        exactConserv=T, reduce ivdc_kappa to 10, remove multiDimAdvection=F,
556        set deltaTFreeSurf to deltaTtracer) and update the output.
557    o pkg/layers:
558      - fix bolus part so that it compiles with #undef GM_BOLUS_ADVEC;
559      - ensure that "layers_bolus" is switched to False when useGMRedi=False.
560    o verification/offline_exf_seaice:
561      - set all {field}period to zero for constant-in-time forcing (not tested
562        anywhere else).
563    o verification/offline_exf_seaice:
564      - dyn_lsr  : use pkg/seaice S/R (instead of pkg/thsice) to advect sea-ice;
565      - dyn_jfnk : use pkg/thsice S/R (instead of pkg/seaice) to advect sea-ice.
566    o model/src:
567      - implement Finite-Volume method for (hydrostatic) presure gradient
568        from S.-J. Lin (QJRMS 1997), for atmosphere using sigma-coordinate.
569    o pkg/seaice: implement EVP* by Lemieux et al. (2012).
570      - In order to be compatible with the default EVP code, this requires changing
571        the EVP code around a little; and because any small change immediately
572        breaks the lab_sea.hb87 verification experiment, the reference output is
573        updated two times (each time the remaining aggrement was only 2 digits):
574        - after replacing 1/dt by 1*recip_dt with a precomputed recip_dt
575        - after replacing 1/(1+0.5*dt/tau) by a/(a+1), with a=2*tau/dt
576        The adjoint test lab_sea.evp also needed to be updated.
577      - Turn on EVP* by setting SEAICE_deltaTevp as before, and setting
578        SEAICEuseEVPstar=.true.; for EVP* SEAICE_deltaTevp does not need to be
579        a factor of SEAICE_deltaTdyn, and you can set the number of EVP steps
580        explicitly with SEAICEnEVPstarSteps (thereby overriding the default of
581        INT(SEAICE_deltaTdyn/SEAICE_deltaTevp)). Controlling EVP* is deliberately
582        kept obscure, because I need to test it a little more.
583    o pkg/cheapaml:
584      - fix few incorrect type (_RL/_RS) in subroutine calls.
585    o pkg/seaice:
586      - new S/R SEAICE_MAP_RS2VEC (similar to SEAICE_MAP2VEC) to map _RS arrays
587        to _RL vector; this fixes JFNK code when compiling with "-use_r4" option.
588    o model/src:
589      - add a warning if using select_rStar=2 with nonlinFreeSurf <> 4;
590        change (in input_ad*/data) select_rStar from 2 to 1 for AD verification
591        experiments global_ocean.cs32x15 & tutorial_tracer_adjsens (+ update output)
592    o pkg/cheapaml:
593      - replace "273.1 _d 0" by celsius2K in pkg/cheapaml/cheapaml.F and
594        update output of experiment cheapAML_box.
595      - store in CHEAPAML.h coeffs ssq[0:2] for saturation specific humidity,
596        and set them only in one place (cheapaml_readparms.F).
597      - replace "273.16 _d 0" by celsius2K & replace "3.14159 _d 0" by constant "PI"
598      - remove re-setting of main-model parameter "celsius2K" (in cheapaml_readparms)
599        and re-setting of cheapAML params "lath" & "p0" (in cheapaml_init_varia).
600    o model/src/the_main_loop.F:
601      - fix revision 129 : need both ALLOW_ECCO and ALLOW_ECCO_EVOLUTION.
602    o pkg/seaice:
603      - remove legacy branch code.
604      - retire SEAICE_GROWTH_LEGACY and SEAICE_CAP_HEFF accordingly.
605    o verification/*/code*/SEAICE_OPTIONS.h:
606      - remove documentation for retired CPP flags (SEAICE_GROWTH_LEGACY,
607        SEAICE_CAP_HEFF).
608    o pkg/cheapaml:
609      - use standard routine (S/R GET_PERIODIC_INTERVAL) to decide when it is time
610        to load new forcing fields.
611      - add missing "_d 0" where it's needed; + some editing (improve indentation).
612      - remove switch to "-r8" compiler option (no longer needed) in verification
613        cheapAML_box, keep same output (small trucation error differences).
614    o verification/offline_exf_seaice:
615      - add thermodynamics only test.
616    o verification/cheapAML_box:
617      - split the domain in 8 (2x4) tiles; add MPI and multi-threaded test;
618        keep same output (same 14 digits for cg2d).
619      - switch on "-r8" compiler option (some numerical values are missing
620        the "_d 0") and update output (only 6 digits for cg2d were preserved).
621    
622    checkpoint64b (2012/12/24)
623    o pkg/cheapaml:
624      - remove un-used variables (Qnet,EmPmR) from pickup files.
625      - store tendency of advected variables into cheapaml pickup file
626        and fix the AB-2 restart.
627    o verification/offline_exf_seaice and lab_sea adjoint:
628      - switch to new code (#undef SEAICE_GROWTH_LEGACY).
629      - switch to 4 time steps in offline, consistent with lab_sea.
630      - match parameters from SEAICE_GROWTH_LEGACY branch in data.seaice.
631      - update results after change of experiment seaice.
632    o pkg/seaice:
633      - remove option SEAICE_MULTICATEGORY; has been replaced with run-time
634        parameter SEAICE_multDim. Issue a warning if SEAICE_MULTICATEGORY is
635        still defined since SEAICE_multDim needs to be set to MULTDIM value (from
636        SEAICE_SIZE.h) to recover previous #define SEAICE_MULTICATEGORY default.
637    o model/src:
638      - add run-time parameter to select CG2D solver minimum-residual solution
639        (in case of a poor convergence).
640    o pkg/seaice/seaice_lsr.F
641      - move calculation of matrix coefficients into new
642        S/R SEAICE_CALC_LSR_COEFFS; for now this routine remains in the same
643        file; the main purpose of this change is to be able to reuse the code
644        in S/R SEAICE_PRECONDITIONER
645      - modify the computation of the residual so that the mass of sea-ice
646        is not used twice; this simplifies the calculations, but since
647        the residual is never used except when LSR_mixIniGuess.ge.4---and this is
648        not tested in testreport---this does not affect the testreport results.
649    o verification/seaice_obcs:
650      - disable SEAICE_GROWTH_LEGACY; reset input files to match those of
651        verification/lab_sea/input.salt_plume; changes results/output.txt*
652    o model/src:
653      - adapt quasi-hydrostatic formulation to work with p or p* coordinate.
654    o pkg/seaice:
655      - improve description of parameters in seaice_fgmres.F and start
656        cleaning up the code
657      - change name of SCALPROD to SEAICE_SCALPROD and modify meaning of
658        second argument
659      - add a metric based on grid cell area to SEAICE_SCALPROD; update
660        results of offline_exf_seaice.dyn_jfnk
661      - compute initial residual norm in seaice_jfnk based on SEAICE_SCALPROD
662    o pkg/aim_v23:
663      - fix an other bug in dissipation heating (grid-cell area was missing).
664    o model/src + pkg/seaice:
665      - add global (multi-tile) linear solver for pair of tri-diagonal system
666        along X and Y lines, respectively for U and V component.
667        Note: 1) MPI and cube-exchange not yet coded.
668            2) probably not accurate for poorly conditioned / large size problem.
669      - add option for SEAICE_LSR to use global (multi-tile) tri-diagonal solver;
670        default: not compiled and not used.
671    o pkg/seaice:
672      - first attempt at a multi-threaded fgmres solver for the JFNK solver:
673        introduce bi/bj loops and use global_sum_tile_rl instead of
674        mpi_allreduce in seaice_fgmres.F
675      - improve diagnostics output for fgmres solver (seaice_fgmres.F)
676      - replace a few unnecessary goto statements by if-blocks  (seaice_fgmres.F)
677      - add a verification experiment for JFNK in offline_exf_seaice
678    o verification:
679      - change (for now, only fwd test) offline_exf_seaice experiment:
680        use a re-entrant channel with idealized coastline (trapezoidal shape)
681        at southern boundary to explore seaice dynamics and thermodynamics
682        with simple forcing. Main set-up has dynamics+thermo and SST relaxation;
683        secondary test (input.thsice) use thermodynamics only with SST relaxation.
684      - add seaice-dynamics only secondary test using LSR and pkg/thsice advection.
685    o pkg/exf:
686      - disable "sstExtrapol" when Nr=1
687    o verification:
688      - add new experiment "cheapAML_box" (simple 1 layer set-up from Bruno Deremble)
689        to test pkg/cheapaml.
690    o pkg/aim_v23 & pkg/shap_filt:
691      - fix dissipation heating (erroneous gravity multiplication factor).
692    o pkg/seaice:
693      - remove unused field pressPre from jfnk solver
694      - rename two subroutines in seaice_preconditioner.F
695    o eesupp/src:
696       - S/R MDSFINDUNIT avoids reserved unit numbers (scrUnit1, eeDataUnit ...)
697  o pkg/seaice/seaice_preconditioner.F: fix preconditioner once again  o pkg/seaice/seaice_preconditioner.F: fix preconditioner once again
698     - remove wrong parts of the rhs and the lhs (were in there     - remove wrong parts of the rhs and the lhs (were in there
699       because I did not understand the concept of this preconditioner)       because I did not understand the concept of this preconditioner)

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