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revision 1.1775 by jmc, Mon Nov 26 00:18:32 2012 UTC revision 1.1928 by jmc, Sun Oct 6 00:48:15 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/exf:
8      - to allow to use seaice-fraction from pkg/exf in other pkgs than pkg/seaice:
9         rename CPP option EXF_ALLOW_SEAICE_RELAX to EXF_SEAICE_FRACTION
10         and rename array obsSIce to exf_iceFraction.
11    o tutorial_deep_convection:
12      - add 1rst version of isotropic 3-D Smagorinsky code (from Louis-Philippe),
13        for now all in this exp. code dir.
14      - add secondary test using Smag-3D viscosity (keep very low backgroud visc for
15        testing) and flux-limter advection scheme for Temp. (no explicit diffusion).
16    o eesupp/src:
17      - added SINGLE_DISK_IO option because reading of parameter files on
18        very large number of processors did not work with existing set-up
19    
20    checkpoint64o (2013/09/25)
21    o pkg/atm_phys & atm_compon_interf:
22      - allows for coupling of gray-atmosphere (atm_phys) with ocean.
23    o tools/build_options:
24      - switch from "-fPIC" to "-mcmodel=medium" in optfiles: linux_amd64_gfortran
25        & linux_amd64_ifort11 and in linux_amd64_g77 & linux_amd64_open64 also
26        remove CPP setting (was identical to genmake2 default).
27    o pkg/gmredi & model/src: Some updating and work done on the residual model.
28      - created new file model/src/calc_eddy_stress.F to calculate the eddy stress.
29      - fixed up the calculation of the eddy stress and how it is added to the
30        external forcing via taueddy_external_forcing.F
31      - at the moment, it is very experimental and only works with the variable eddy
32        diffusivity calculated in gmredi_k3d.F
33    o pkg/seaice/seaice_check.F: add a check to catch the case of specifying
34        lw/swfluxfile instead of lw/swdownfile in data.exf together with pkg/seaice
35    o testreport (& tools/do_tst_2+2):
36      - for MPI test, set default COMMAND to 'mpirun -v -np TR_NPROC ./{executable}'
37    o tools/build_options: linux_amd64_gfortran & linux_amd64_ifort11:
38      - remove CPP='cpp -traditional -P' (this is genmake2 default)
39      - add switch (for big setups) to use 'medium' memory-model (but leave it
40        commented out for now). Note: needed with FC 19 to compile big setups.
41    o pkg/atm_compon_interf:
42      - regroup per field origin (model & pkgs) the coupling storage routines
43         (which accumalate in time each coupling field)
44      - move bi,bj loops inside atm_store_my_data.F and store also wind-stress;
45        update accordingly + simplify aim_do_physics.F
46    
47    checkpoint64n (2013/08/26)
48    o pkg/bbl:
49      - update formulation to reduce dispersion of tracer properties in bbl
50      - replaced horizontal and vertical transport parameters with velocities
51      - changes results for verification/global_with_exf.yearly
52    o verification/halfpipe_streamice:
53      - change to matrix construction; update both Fwd & AD output.
54    o verification/tutorial_tracer_adjsens:
55      - OpenAD test: switch to vector-invariant momentum since fluxform with
56        rStar causes problems with OpenAD; update output.
57    o tools:
58      - genmake2: define a common prefix for all temp-file names ; move them
59        to local /tmp disk (but would be easy to move them back);
60      - xmakedepend: apply the same switch for temp-files.
61    o pkg/offline:
62      - changes for use with rStar (NLFS): assume that we continue to provide
63        UVELMASS/hFacW_ini & VVELMASS/hFacS_ini (hFacWi,S_ini as written in grid
64        output files) and apply r* scaling at each time-step (function of the time
65        varying Eta field); use normal pickup files (needed for restart with NLFS).
66    o adjoint with OpenAD:
67      - move OpenAD-specific files from verification/OpenAD/code_oad_all to a new
68        package openad.  This package has to be compiled for all runs with OpenAD
69        instead of specifying code_oad_all as a modification directory.
70      - link the fortran templates from tools/OAD_support to the build directory
71        for preprocessing to avoid conflicts between different setups compiled
72        simultaneously and simplify cleanup.
73    o pkg/exf:
74      - in exf_getforcing.F: comment out most of the EXCH calls (fields used by
75        main model or other pkgs are exchanged in EXF_MAPFIELDS).
76    o model/src:
77      - do_stagger_fields_exchanges.F: skip EXCH calls when using pkg/offline
78        (similar to do_fields_blocking_exchanges.F).
79    o tools/genmake2:
80      - remove TAF output src code just before calling staf (when not doing a fresh
81        built, will stop if things go wrong with staf).
82      - fix target "adobj" (left from TAF version-2 transition)
83    o pkg/diagnostics:
84      - add a parameter to track the status of pkg/diagnostics activation;
85        this replace/extend the use of logical param "settingDiags" (to check
86        when adding diag to the list) to also check any DIAGNOSTICS_[]FILL* call.
87        New S/R to print error message and stop when pkgStatus is not right.
88      - to try: add a warning when "data.diagnostics" exist but useDiagnostics=F.
89    
90    checkpoint64m (2013/08/13)
91    o model/inc:
92      - move FCORI_MACROS.h from PARAMS(_MACROS).h to GRID_MACROS.h (left from
93        8 yrs ago modif when Coriolis arrays were moved from PARAMS.h to GRID.h)
94    o pkg/kpp & aim_v23:
95      - only call DIAGNOSTICS_FILL when useDiagnostics=TRUE.
96    o pkg/seaice:
97      - restore (last time on 2011/12/24) ability to compile pkg/seaice with
98        undefined pkg/exf ALLOW_ATM_TEMP or ALLOW_RUNOFF CPP-options.
99      - only call DIAGNOSTICS_FILL when useDiagnostics=TRUE.
100    o eesupp/src:
101      - fix check for overlap-size argument (myOLn.GT.MAX_OLY_EXCH)
102        in exch1_rx[_ad].template (thanks to Francois Lefeuvre report).
103    o switch to TAF version-2:
104      - add flow directives to "freeze" naming convention for ad-routines that
105        are used in I/O routines of adjoint state and associated common blocks
106        that are used in adcommon.h (backward compatible with version-1)
107      - update all ad-optfiles (in tools/adjoint_options + few local to some
108        verification exp) to switch to latest TAF version (currently 2.5.5);
109        merge "*_mpi" adoptfiles into the corresponding non-mpi (but commented
110        out except for diva).
111      - the major change with TAF version-2 is that both the differentiated
112        routines and the forward routines (new) are returned as part of the TAF
113        output source code. Update genmake2 accordingly.
114      - new output for AD experiment tutorial_global_oce_biogeo (better AD gradient
115        with version-2 when compared to TLM or FWD gradient); other experiments
116        output show minor changes (machine truncation level); update the few AD &
117        TLM output with 12 matching digits only (some prior to version-2 switch).
118    
119    checkpoint64l (2013/08/05)
120    o model/src:
121      - in dynamics.F, skip the call to CALC_VISCOSITY if momViscosity=F
122      - main_do_loop.F: no longer includes additional (AUTODIFF) header files
123        when using TAF but only if using OpenAD.
124    o pkg/mom_common+fluxform+vecinv:
125      - always set horiz. viscosity arrays to background value before calling
126        MOM_CALC_VISC (in MOM_FLUXFORM & MOM_VECINV) and call S/R MOM_CALC_VISC
127        only when using variable horiz. viscosity (useVariableVisc=T);
128      - simplify mom_vecinv.F (only 1 block for momViscosity).
129    o pkg/mom_common: variable horiz. viscosity in NH code
130      - move horiz-viscosity 3-D arrays viscAh_W & viscA4_W (used in calc_gw.F)
131        from model/inc/NH_VARS.h to pkg/mom_common/MOM_VISC.h
132      - store in common block (in MOM_VISC.h) logical parameters: useHarmonicVisc,
133        useBiharmonicVisc & useVariableVisc.
134      - fix old bug (already in 1rst implementation of variable horizontal viscosity
135        in calc_gw.F, version 1.27, 2006/06/20):
136        horizontal bi-harmonic viscosity in gW was missing when wiscA4W=0
137        even if variable bi-harmonic viscosity (e.g., viscA4Grid) was non-zero.
138      - change background horiz viscosity in vertical momentum (gW) to always be
139        viscAhW,viscA4W (instead of switching to viscAhD, viscA4D when using
140        any type of variable viscosity, e.g., viscAh/4Grid)
141      - change default value of viscAhW,viscA4W to viscAhD,viscA4D (instead of
142        viscAh,viscA4) which default to viscAh,viscA4 :  this avoid missing
143        horiz. viscosity in W eq when just setting viscAhD/Z,viscA4D/Z (since
144        default viscAh,viscA4 is zero).
145    o model/src:
146      - extend length of drC & recip_drC from Nr to Nr+1.
147    o Divided Adjoint (DIVA) with MPI:
148      - genmake2: do not create local ./mpi_headers dir when no file to copy into.
149      - remove option ALLOW_DIVIDED_ADJOINT_MPI (replaced by ALLOW_DIVIDED_ADJOINT
150        and ALLOW_USE_MPI) from model/src code and from ECCO_CPPOPTIONS.h.
151    
152    checkpoint64k (2013/07/23)
153    o tools/OAD_support:
154      - avoid the need for file "oadtempflile" in insertTemplateDir.bash
155        and remove it from genmake2.
156    o tools/build_options:
157      - remove MPI_HEADER_FILES_INC setting (no longer used) and comment out
158        MPI_HEADER_FILES list (let genmake2 find the missing headers)
159    o verification/halfpipe_streamice:
160      - change to driving stress formulation; update both Fwd & AD output.
161    o tools/genmake2 and Divided Adjoint with MPI:
162      - remove default setting of MPIINCLUDEDIR from $MPIHOME (always been broken);
163      - only create local ./mpi_headers dir if using MPI and MPIINCLUDEDIR is set;
164      - add new variable (LOCAL_MPI_HEADERS, replace MPI_HEADER_FILES_INC) in
165        Makefile, which is set by genmake2, and check which mpi-headers are needed.
166        Note: need to update adjoint_options/adjoint_diva_mpi accordingly.
167      - update target "CLEAN" (to also remove ./mpi_headers/ dir).
168    o testreport:
169      - changes for Divided Adjoint Run: when file "run_ADM_DIVA" is present,
170        perform additional runs (number of additional runs is "add_DIVA_runs" taken
171        from file run_ADM_DIVA ; should match "nchklev_3" in file "code_ad/tamc.h").
172    o verification/lab_sea (AD test):
173      - change to test Divided Adjoint Run in this set-up (both standard AD test
174        and 2 secondary AD test: noseaice + noseaicedyn); drop the evp AD test.
175    o pkg atm_ & ocn_compon_interf:
176      - remove cpl_earlyExpImpCall=F option (was mainly a hack added for the old
177        staggerTimeStep implementation) and disable (retired) corresponding
178        parameter.
179    o pkg/offline:
180      - comment out unused field-array: ICEM, ConvectCount, hflx[01], icem[01];
181      - add S/R OFFLINE_CHECK to print offline parameter summary
182        and stop if loading a file that is not used;
183      - enable to calculate GMRedi tensor, KPP mixing and convective index
184        when the corresponding file(s) is/are not specified (but pkg is used).
185      - comment out resetting of monitorFreq (to endTime) since it still useful
186        for monitoring CFL numbers and checking offline fields.
187    o OpenAD:
188      - do not define OAD_DEBUG (in tools/adjoint_options/adjoint_oad) to get
189        smaller standard output) and generate new (smaller) output (on baudelaire
190        using gfortran with -ieee) for exp. tutorial_tracer_adjsens
191    o model/src:
192      - call EXTERNAL_FORCING_SURF outside bi,bj loops (in do_oceanic_phys.F),
193        (where external_forcing_adjust was called) and change list of arguments;
194      - merge external_forcing_adjust.F into external_forcing_surf.F
195      - put surface relaxation of SST & SSS in new S/R (forcing_surf_relax.F)
196        which also contains balancing surface relaxation (ALLOW_BALANCE_RELAX,
197        previously in file "balance_relax.F", now removed); remove corresponding
198        arrays in FFIELDS.h.
199      - EXTERNAL_FORCING_SURF is now called when using pkg/offline; implement
200        a hack for getting back surfaceForcingS (loaded from file) when using
201        ALLOW_OLD_VIRTUALFLUX (pkg/dic, in DIC_OPTIONS.h) in offline set-up.
202      - update output of AD test experiment global_ocean.cs32x15.seaice_dynmix
203        (was getting only 11 digits for AD-grad, due to different truncation
204         error in AD code).
205    
206    checkpoint64j (2013/07/04)
207    o pkg/offline:
208      - to enable the use of other features with pkg offline (e.g., obcs),
209        also call S/R DO_OCEANIC_PHYS in offline run - more modifs to come.
210      - comment out "allowFreezing" (now active) in 2 offline testing exp.
211    o pkg/exf ALLOW_RUNOFTEMP
212      - fix sign and make compatible with temp_EvPrRn .NE. UNSET_RL
213      - ahdded RUNOFTEMP test to verification/global_ocean.cs32x15/input.seaice
214      - changes verification/global_ocean.cs32x15/results/output.seaice.txt
215    o pkg/atm_phys:
216      - allows to add some damping on uVel,vVel (strength only function of k).
217    o verification, ad-tests:
218      - reduce length of the simulation for AD test: global_ocean.cs32x15.seaice,
219        global_ocean_ebm and offline_exf_seaice.thsice.
220    o verification/halfpipe_streamice:
221      - found a bug in s/r pkg/streamice/streamice_advect_thickness which caused
222        flux input boundary conditions to be ignored; a fix for this bug changed
223        verification results for forward test.
224      - add adjoint test.
225    o pkg/ptracers:
226      - allow to restart without SOM pickup (resetting SOM to zero).
227    o pkg/gmredi:
228      - New parameterisation for the calculation of K and (GM_PsiX,GM_PsiY) added.
229      - It uses mixing length theory and suppression by steering level effects to
230        calculate a diffusivity used in the Redi tensor (see Bates et al., submitted
231        to JPO, for more details).
232      - It also uses the diffusivity to calculate an eddy induced streamfunction
233        based on a PV closure (rather than a buoyancy closure as in GM).
234      - New files added to pkg/gmredi:
235        gmredi_k3d.F calculates the diffusivity for the Redi tensor and the eddy
236          induced overturning streamfunction (called from gmredi_calc_tensor)
237        gmredi_calc_eigs.F calculates the eigenvalues and eigenvectors required
238          for use in gmredi_k3d
239        gmredi_calc_urms.F calculates the the rms eddy velocity used to calculate
240          the eddy diffusivity
241    
242    checkpoint64i (2013/06/18)
243    o pkg/cheapaml:
244      - take src files from MITgcm_contrib/verification_other/offline_cheapaml/code
245        that enable the use of seaice (pkg/thsice thermo & pkg/seaice dynamics)
246        with pkg/cheapaml.
247    o utils/python: add subpackage for cubed sphere function, first example is
248        simple cs.pcol to plot 2D fields on a map
249    o pkg/streamice:
250      - This is a new package in MITgcm, which solves dynamic equations for ice
251         sheets and ice streams
252      - At the moment it is independent of atmosphere/ocean dynamics, or any
253        other physical packages in MITgcm, even ShelfIce (although it is anticipat-
254        ed that this will change)
255      - There is a new verification exercise that tests it, halfpipe_streamice,
256        evolves a 40x80 km ice stream/ice shelf (at coarse resolution) in a
257        rectangular embayment
258      - halfpipe_streamice is forward-only for now, will have TAF test soon
259      - for questions, email dgoldber@mit.edu
260    o pkg/thsice:
261      - fix filling of snow-precip diagnostic (SIsnwPrc) (left from the removing
262        of snowPrc from common bloc, on May 2nd, thsice_step_fwd.F revision 1.40);
263      - remove diagnostics 'SI_FrcFx' ( now identical to 'SI_Fract' with new
264         call sequence: ice-Thermo(thsice),ice-Dyn,ice-Advect );
265      - allow precip from pkg/cheapaml to make snow over seaice.
266    o pkg/cfc:
267      - move in separated header file (CFC_ATMOS.h) time-serie arrays of Atmos CFC
268      - remove atmos CFC 2-D arrays from common bloc (now local variables)
269      - change some hard-coded constant to run time parameter for reading and
270        and interpolating atmospheric CFC ; keep same default as previously.
271      - more flexible reading of Atmos CFC (number of records no longer hard-coded)
272      - put arguments in standard order: myTime, myIter, myThid
273      - use standard S/R GET_PERIODIC_INTERVAL for time interpolation of
274        atmospheric CFC ; fix for the case myIter < PTRACERS_iter0.
275      - fix calculation of surf tendencys for partial-cell and/or Non-Lin Free-Surf
276      - new routine to print summary of CFC params and check for consistency.
277    o pkg/seaice: add uice/vice to the parameter list of s/r seaice_advdiff,
278      similar to thsice_advdiff.
279      Note that for the B-grid case the routine parameters uc/vc are overwritten.
280    o pkg/cfc:
281      - change time interpolation for atmospheric CFC-11 (now same as for CFC-12);
282        update output (CFC-11) of experiment cfc_example and tutorial_cfc_offline.
283      - fix interpolation of atmphspheric CFC between Sorthern and Northern
284        hemisphere value.
285    o pkg/seaice:
286      - allow to use seaice dynamics without pkg/exf (e.g., using pkg/cheapaml)
287    o pkg/seaice: add Adams-Bashforth2 time discretization for ice dynamics;
288                  so far only for JFNK-solver, turn on with SEAICEuseAB2 = .TRUE.
289      - requires an additional time level that is stored in the pickup
290      - you can start with AB2 from a pickup without this time level with
291        pickupStrictlyMatch = .false.
292    
293    checkpoint64h (2013/05/26)
294    o pkg/cheapaml:
295      - replace one ()**.5 with SQRT + use temp var "cdu = tau/Du" (coare3_flux);
296        affect machine truncation (but exp cheapAML_box still pass with 13 digits).
297      - consistent treatment of uWind,vWind location: assume everywhere in
298        pkg/cheapaml that they are on C-grid (@ uVel,vVel location)
299        (Note: was already the case for Tair,Qair advection);
300        add option (INCONSISTENT_WIND_LOCATION) to recover old results.
301      - compute diabatic forcing only in the interior (excluding overlap regions)
302      - fill in array "Qsw" (for short-wave heating);
303      - add diagnostic for precip ; fill-in diagnostics for cheapAML state vars
304        before any update (consistent with MITgcm state var diagnostics);
305      - cheapaml_fields_load.F & cheapaml_init_varia.F : only fill outer edges if
306        non periodic ; + adjusted for uWind,vWind (C-grid).
307    o pkg/seaice:
308      - remove dependence of pkg/seaice versus pkg/exf (file: pkg/pkg_depend) and
309        add explicitly pkg/exf in experiments that currently use pkg/seaice.
310      - allows to compile pkg/seaice without pkg/exf.
311    o tools/OAD_support:
312      - use a local copy (ourRWCPinBd) to ensure index ourRWCP stays within bounds
313        of array "ourStepOf" in function rvNextAction (revolve.F90).
314    o pkg/aim_compon_interf renamed to pkg/atm_compon_interf
315      - change pkg name (to be used with other atmospheric physics pkg)
316        but by-pass CVS when making the new pkg so that we keep the CVS history.
317    o pkg/offline:
318      - call OFFLINE_FIELDS_LOAD from pkg/offline/offline_init_varia.F
319        (previously called from pkg/dic_surfforcing_init.F)
320    o model/src:
321      - re-order sequence of calls within packages_init_variables.F, using
322        standard order, except for:
323         DIAGNOSTICS_INIT_VARIA and OFFLINE_INIT_VARIA (called @ the top),
324         CTRL_MAP_INI and OBCS_INIT_VARIABLES (called @ the bottom)
325    o new pkg: atm_phys
326      - add entry point and source code (previously in contrib
327          verification_other/atm_gray/code_gray/) for new pkg "atm_phys"
328        (atmospheric physics pkg from P. O'Gorman and T. Schneider, JCl, 2008).
329      - re-order sequence of calls within packages_readparms.F,
330         packages_init_fixed.F and packages_write_pickup.F
331        (but skip packages_init_variables.F because of TAF issues).
332      - update contrib/*/atm_gray/ experiment.
333    o pkg/seaice (ITD code):
334      - simplify and fix the writing of pickup-files for ITD case
335    o pkg/seaice (ITD code):
336      - introduce floe size dependent lateral melt for ITD case;
337      - cleaning (avoid division by zero, change to f77 syntax, remove tabs)
338      - update seaice_itd experiment main output.
339    o pkg/thsice:
340      - remove snowPrc from common block THSICE_FLUX, in THSICE_VARS.h and
341        declared it locally (without bi,bj) in thsice_main.F & aim_do_physics.F;
342        changed accordingly pkg/atm2d.
343    
344    checkpoint64g (2013/05/01)
345    o pkg/exf ALLOW_RUNOFTEMP
346      - if defined,  river and glacier runoff temperature can be read-in from
347        runoftempfile; runoftempfile needs to have same format as runofffile
348    o pkg/thsice (& pkg/bulk_force):
349      - In case Energy-Reference-Level (ERL) is used (temp_EvPrRn=0), account
350        for energy content of Precip + RunOff & Evap (like with pkg/exf).
351      - change computation domain to always be the interior (without overlap).
352      - fix bug (wrong overlap) when using EXF and stressReduction > 0.
353    o verification/tutorial_global_oce_biogeo:
354      - add preliminary OpenAD setup (still has problems)
355    o pkg/seaice:
356      - turn some parameters for choosing the convergence criterion of
357        the inexact Newton method (JFNK) into runtime parameters for convenience
358      - clean up seaice_calc_viscosities.F: remove/retire two options for
359        SEAICetaZmethod (1,2), introduce area weighting for method 3; this changes
360        the results of lab_sea/input because a division has been replaced by
361        a multiplication with the reciprocal (sumNorm)
362      - modify offline_exf_seaice/input.dyn_jfnk/data.seaice to improve
363        convergence of solver (changes results, of course), and to test some
364        new features
365    o model/src:
366      - remove unused (since Aug 2006) S/R SET_WRITE_GLOBAL_PICKUP and its call.
367      - remove unused forcing field "dQdT" and associated parameter "dQdTFile".
368      - move forcing adjustment (balancing surface forcing) in specific S/R
369        where might also be applied exchanges (if needed) to forcing arrays.
370    o pkg/shelfice:
371      - allow to specify the Ice-Shelf mass per unit area (instead of
372        shelficeLoadAnomaly) and do the conversion from one to the other
373      - move loading from file of shelficeLoadAnomaly from SHELFICE_INIT_VARIA
374        to SHELFICE_INIT_FIXED: (a) avoid some TAF recompution issues and
375        (b) will be loaded in time (before calling INI_PRESSURE) in case it is
376        needed in phi0surf for initial pressure calculation when useDynP_inEos_Zc
377      - update isomip experiment forward output (get machine truncation error
378        from conversion shelficeLoadAnomaly -> shelficeMass -> shelficeLoadAnomaly)
379    o verification/offline_exf_seaice:
380      revise data.seaice in input.thermo and input_ad and update results accordingly
381        HO = 0.2, SEAICE_areaLossFormula = 2,
382        SEAICE_growMeltByConv = .TRUE.,
383        SEAICE_doOpenWaterMelt = .TRUE.,
384      Improve consistency with input.thsice and fix the spurious 500m ice corners
385    o verification/global_ocean.cs32x15:
386      - set Energy Reference Level to liq. water @ 0 degC: temp_EvPrRn=0.,
387        in icedyn (thsice+seaice-dyn) test and update output.
388    o verification/offline_exf_seaice:
389      - adjust list of tested variables (with testreport) and update
390        standard test output with better slection of monitored fields.
391    o pkg/cd_code:
392      - swtich off Adams-Bashforth on the 1rst iteration. Update output of
393        experiment lab_sea.hb87
394    o tools/genmake2:
395      - change default makedepend from the system default to tools/xmakedepend:
396        When no makedepend is specified, select tools/xmakedepend it the test pass,
397        otherwise select the system default (if exist and pass the test) or
398        try to build cyrus-makedepend ; stop if none of the 3 works.
399    o pkg/exf & pkg/thsice:
400      - In case Energy-Reference-Level (ERL) is used (temp_EvPrRn=0), account
401        for energy content of Precip + RunOff & Evap. Assumes:
402       1) Rain has same temp as Air.
403       2) Snow has no heat capacity (consistent with seaice & thsice pkgs)
404       3) Run-Off comes at the temp of surface water (with same Cp)
405       4) Evap over ocean is released to the Atmos @ surf-temp (=SST); should be
406        put directly into Latent Heat flux & should use water-vapor heat capacity.
407       5) Evap over snow/seaice (pkg/thsice) assumes constant Lf+Lv (consistent
408        with snow having no Cp) => water vapor is released to Atmos @ 0^oC (=ERL).
409    o pkg/seaice: simplify the use of CPP flags in JFNK-related files
410        (compile when SEAICE_ALLOW_JFNK is defined)
411    o pkg/thsice:
412      - fix oceanic flux diagnostics & timeave (left from new sequence of calls
413        implementation): move THSICE_AVE call after the advection (called directly
414        from thsice_do_advect.F).
415    o verification/global_ocean.90x40x15 and OpenAD:
416      New experiment for OpenAD is identical to the one in input_ad except that
417        multiDimAdvection=.FALSE.,
418      There is still an issue with this.
419    o pkg/thsice:
420      - account for ice velocity (ocean relative velocity) in turbulent heat flux
421        at the base of the ice; update output of global_ocean.cs32x15 (icedyn)
422        and offline_exf_seaice (main test).
423    
424    checkpoint64f (2013/03/31)
425    o verification/OpenAD:
426      - new (smaller, without OAD_DEBUG) output_oadm.txt generated using gfortran.
427    o verification/isomip, pkg/shelfice and OpenAD:
428      - add OpenAD setup to this exp and make shelfice package work with OpenAD
429    o verification/tutorial_global_oce_biogeo:
430      - update AD and TLM output after turning off ALLOW_FE (in DIC_OPTIONS.h)
431    o verification/offline_exf_seaice:
432      - replace adjoint experiment (now similar to fwd input.thermo/ setup).
433    o verification/tutorial_tracer_adjsens, pkg/ptracers and OpenAD:
434      - add OpenAD setup to this exp and make ptracers package work with OpenAD
435    o pkg/seaice/seaice_evp.F:
436       mask the asymmetric contribution of the ice-ocean stress (when
437       the turningAngle is non-zero) over open water to avoid stripes
438       in the EVP-solutions after many EVP-substeps. This does not change
439       the verification experiment (because turningAngle=0 in that experiment),
440       but will affect other EVP solutions with turningAngle.ne.0
441    o verification, AD & TLM output:
442      - new TAF version 2.3.10 (previously 2.3.8) add more parenthesis in multiple
443        additions and multiplications which affect results at machine truncation
444        level. Update few AD output (1D_ocean_ice_column, bottom_ctrl_5x5,
445        lab_sea.noseaicedyn & offline_exf_seaice) and TLM output
446        (1D_ocean_ice_column & tutorial_tracer_adjsens.som81) which had only 12
447        digits of matching.
448    o pkg/seaice:
449       modify lsr-algorithm so that it vectorizes AND converges by using a
450       "zebra" method: split vector loop into two with step size 2; this
451       solves a general convergence problem for the JFNK solver on a vector
452       computer. It has the potential to even improve convergence for
453       non-vector machines, but it does change the results so it is turned
454       off by default. To turn on define CPP-flags SEAICE_VECTORIZE_LSR and
455       SEAICE_VECTORIZE_LSR_ZEBRA in SEAICE_OPTIONS.h
456    
457    checkpoint64e (2013/03/05)
458    o pkg/ecco and several verification experiments:
459       Remove special versions of the_model_main.F, the_main_loop.F, forward_step.F
460       from ecco package, and revert to unified routine in model/src/
461       Adjust verification experiments accordingly, especially gloal_oce_llc90
462       Should conclude long-standing work by Gael to reconsile the_main_loop with
463       ECCO and will enable OpenAD's revolve loop in ECCO setup.
464    o pkg/generic_advdiff:
465      - implement compressible flow method for multi-dim advection (similar to
466        gad_som_advect.F); add new option "GAD_MULTIDIM_COMPRESSIBLE" (since
467        TAF generates many recomputations) to use it; no yet coded with implicit
468        vertical advection.
469      - change experiment advect_cs (new output) and advect_xy (same output)
470        to test compressible flow multi-dim advection.
471    o pkg/generic_advdiff:
472      - fix SOM advection for unusual cases (linear Free-Surf in r*, other
473        cases where linear Free-Surf is not @ k=1, e.g., useShelfIce)
474    o pkg/seaice:
475      - fix bug in the no-slip implementation in seaice_calc_strainrates.F, this
476        bug affects two verification experiments (lab_sea and lab_sea.hb87),
477        recover old (wrong) results by setting noSlipFac = 2. in
478        seaice_calc_strainrates.F;
479      - add another averaging method for etaZ (etaZmethod=3), a mix of 2 and 0
480      - add runtime parameter SEAICE_JFNKepsilon for that finite difference
481        gradient in the Jacobian times vector operation (s/r seaice_jacvec)
482      - fix line search in seaice_jfnk.F (s/r seaice_jfnk_update)
483    o pkg/seaice: reorganize seaice_lsr.F to be able to reuse more code:
484      - new subroutines seaice_lsr_tridiagu/v
485      - introduce loop bounds i/jmin/max to be able to use a restricted
486        additive Schwarz method, but not used for now.
487      - rename SEAICE_CALC_LSR_COEFFS into SEAICE_LSR_CALC_COEFFS
488      - use new subroutines seaice_lsr_tridiagu/v in s/r seaice_preconditioner
489    o OpenAD support
490       Reorganize S/R call for overall time-stepping loop to facilitate
491       OpenAD revolve loop replacement
492       (new S/R main_do_loop.F)
493    o model/src:
494      - add 3-D array 3rd dimension to argument list of S/R ADAMS_BASHFORTH2/3;
495      - pkg/cheapaml: remove local S/R ADAMS2d and use instead standard S/R
496        ADAMS_BASHFORTH2.
497    o pkg/cheapaml:
498      - add new parameter (default=F, same as before) to disable full domain
499        (including land) periodicity in X & Y dir.
500      - new S/R CHEAPAML_COPY_EDGES to copy relaxation field into edges of
501        prognostics field ; merge the 2 S/R cycle_2d_tracer and timestep_2d_tracer
502        into single S/R CHEAPAML_TIMESTEP.
503    
504    checkpoint64d (2013/02/17)
505    o pkg/monitor (angular momentum):
506      - do not add Eta contribution to the total AM if using rigid-lid;
507      - correct for Adams-Bashforth in zonal-wind part (instead of in AM_eta).
508      - horizontal discretisation: compute Zonal wind contribution separately for
509        each component (instead of from cell centered averaged) and use the 4
510        grid-cell corner averaged value of Omega*(R*cos_Phi)^2 in AM_eta part.
511      - Check that AM is conserved with linear dynamics (momAdvection=F and linear
512        FreeSurf) if using vectorInvariant momentum.
513    o model/src (horizontal grid):
514      - move initialisation of all horizontal grid arrays to null value
515        from specific horizontal grid S/R to main S/R INI_GRID;
516      - add 2 new arrays to project model C-grid velocity on to zonal direction
517        (similar to AngleCosC & -AngleSinC but at U and V point location) and
518        compute them in S/R CALC_GRID_ANGLES.
519    o pkg/seaice: replace a hard coded parameter by a runtime parameter
520        SEAICE_JFNK_tolIter
521    o pkg/seaice: introduce a restricted additive Schwarz (RAS) method in
522        preconditioner for JFNK (run LSR into the overlaps as far as possible,
523        i.e OLx/y-2, but overwrite the solution in the overlaps)
524      - extend loop range in seaice_calc_viscosity
525      - add new parameters SEAICE_OLx/y (default = OLx/y-2)
526      - add flexible loop ranges to seaice_preconditioner, seaice_calc_lsr_coeffs
527      - slightly modify loops in tridiagonal solver lsr-preconditioner
528      - by default remove the extra exchange in seaice_preconditioner with a
529        replacement of an undocumented CPP flag by SEAICE_PRECOND_EXTRA_EXCHANGE
530      - modify offline_exf_seaice so that old results without RAS are reproduced
531        for output.dyn_jfnk.txt
532      in seaice_fgmres.F (unrelated to RAS)
533      - add a cpp-flag option for a re-ordered mapping (potentially more
534        efficient), but because this changes the results, turn it off by
535        default
536      - replace the save statement by local common blocks
537    o utils/matlab:
538      - fix tile-offset in rdmnc.m when output was produced using EXCH2.
539      - update cs_grid/bk_line scripts to use load_grid.m (in utils/matlab)
540        instead of local script "load_cs.m".
541    o pkg/seaice:
542      - fix a serious bug in seaice_fgmres.F, s/r seaice_scalprod, connected
543        to the scalarProductMetric and the unrolling. By chance this does not
544        change the verification experiment, because of the particular domain
545        decomposition
546    o pkg/diagnostics:
547      - change default missing_value from UNSET_RL to -999.
548    o pkg/layers: improve vectorization of layers_fluxcalc.F
549      - step 1: split loops, make TatU/V 2D arrays. This alone reduces the cpu
550        time spent in this routine by more than a factor of 3 on an NEC-SX8
551      - step 2: replace search algorithm by a bisection algorithm found in
552        Press et al. Numerical Recipes in Fortran. This algorithm can be
553        vectorized and finds the correct bin in approx. log2(Nlayers) steps.
554        For now, use this algorithm only for TARGET_NEC_SX defined.
555      - moved the search algorithm into a separate subroutine, that is kept
556        within the same file for automatic inlining.
557      - modified catching potential errors
558    o pkg/ecco:
559      - add compile switches ALLOW_SHALLOW_ALTIMETRY and ALLOW_HIGHLAT_ALTIMETRY.
560    o model/src, pkg/autodiff, pkg/ctrl, pkg/grdchk :
561      - modifications for ALLOW_GENTIM2D_CONTROL
562      -- forward_step.F, the_main_loop.F : pass options and arrays for adjoint tapes.
563      -- load_fields_driver.F : add call to CTRL_MAP_GENTIM2D( myTime, myIter, myThid )
564      -- add xx_gentim2d0/1 in ctrl_ad_check_lev1_dir.h checkpoint_lev1_directives.h etc
565      -- use ctrl_swapffields.F (new) instead of exf_SwapFFields.F in ctrl_get_gen.F
566    o model/src:
567      - account for moist thermodynamics in (dry) potential temperature equation;
568        update results of experiments: aim.5l_cs (x2), fizhi-cs (std + aqualev)
569        and cpl_aim+ocn.
570      - also switch to standard compiler (gfortran, was using ifort previously)
571        for fizhi-cs experiments reference output.
572    o pkg/ctrl:
573      - 1st step toward generic time-varying control variable (2D) via CPP option
574        ALLOW_GENTIM2D_CONTROL
575      - note new namelist ctrl_nml_genarr in data.ctrl
576    o verification/global_ocean.cs32x15:
577      - switch off OLD_THSICE_CALL_SEQUENCE (both forward and AD code) to use new
578        thsice calling sequence and update "output.icedyn.txt" output file.
579    o pkg/ptracers:
580      - from Ryan A.: code to allow to restart a tracer at regular time interval
581        specifying a reset frequency and a reset-phase (for each tracers).
582    o pkg/thsice:
583      - implement new sequence of calls for thsice+seaice:
584          previously:   ice-Dyn,ice-Advect,ice-Thermo(thsice)
585          new sequence: ice-Thermo(thsice),ice-Dyn,ice-Advect
586      - allows (with temporary CPP option "#define OLD_THSICE_CALL_SEQUENCE"
587        in CPP_OPTIONS.h) to recover old sequence;
588      - update diagnostics for Intermediate State thsice diagnostics: now filled
589        just before advection (instead of just after advection in old sequence);
590      - update output of experiment offline_exf_seaice (standard test);
591      - in global_ocean.cs32x15 exp., postpone output.icedyn.txt update
592        by setting #define OLD_THSICE_CALL_SEQUENCE in CPP_OPTIONS.h
593    o pkg/aim_v23:
594      - use tiled array for aim_CO2 and surface wind speed for export to coupler;
595      - use standard pkg/mdsio routines to read & write CO2 pickup file;
596      - in-line S/R AIM_AIM2DYN_EXCHANGES in aim_do_physics.F;
597      - Implement new sequence of calls for seaice advection (with thsice and
598        seaice diffusion): do ice advection after ice-Thermodynamic (previously
599        was done before); change aim_do_physics.F (split the bi,bj loops block);
600      - use same CPP option (OLD_THSICE_CALL_SEQUENCE) to recover old sequence;
601    o pkg/thsice:
602      - add a missing EXCH of sIceLoad in thsice_main.F (ocean set-up) for the case
603        where just seaice diffusion is used without seaice-dynamics.
604    
605    checkpoint64c (2013/01/18)
606    o pkg/seaice:
607      - add a parameter JFNKres_tFac that can replace JFNKres_t
608        (= JFNKres_tFac*JFNKresidual before JFNK solver)
609      - add a line search option to the JFNK solver
610      - move update of u/vIce and computation of initial residual into a separate
611        routine (same file); makes the code a little easier to read (?)
612      - the line search requires computation of the residual and for some reason
613        I cannot do the update of u/vIce at the beginning of the Newton loop
614        without changing the results, so we move computation of the new residual
615        also to the end of the Newton loop, even without the line search
616    o pkg/mdsio:
617      - write missing value (corresponding to undefined array value) to meta files;
618        skip this if missing value is one (UNSET_RL would be a better value for the
619        case of undefined missing value but it's current the default missing-value);
620        Also update mdsio_read_meta.F (reading timeInterval & missing-value).
621    o pkg/exf & thsice:
622      - for diagnostics purpose, fill-up and update Qsw array (+ fill the
623        diagnostics) even when SHORTWAVE_HEATING is #undef;
624    o verification/cfc_example:
625      - turn on pkg/layers with pkg/diagnostics (to test pkg/layers and to
626        illustrate how to use it).
627    o verification/offline_exf_seaice:
628      in input: add SEAICErestoreUnderIce=.TRUE., and reduce size of forcing
629        files to only one time-record.
630      in input.thermo: narrow the 2 bands of low initial ice-concentration near
631        N & S edges; switch on SEAICErestoreUnderIce=T; use pkg/diagnostics for
632        snapshot output; same mcPheePiston value as in thsice with
633        surf-current=0.2m/s.
634      in input.thsice: similar set-up as in input.thermo (channel with same seaice
635        initial conditions).
636    o verification/cfc_example:
637      - update file "data" with more standard choice (default rotationPeriod,
638        exactConserv=T, reduce ivdc_kappa to 10, remove multiDimAdvection=F,
639        set deltaTFreeSurf to deltaTtracer) and update the output.
640    o pkg/layers:
641      - fix bolus part so that it compiles with #undef GM_BOLUS_ADVEC;
642      - ensure that "layers_bolus" is switched to False when useGMRedi=False.
643    o verification/offline_exf_seaice:
644      - set all {field}period to zero for constant-in-time forcing (not tested
645        anywhere else).
646    o verification/offline_exf_seaice:
647      - dyn_lsr  : use pkg/seaice S/R (instead of pkg/thsice) to advect sea-ice;
648      - dyn_jfnk : use pkg/thsice S/R (instead of pkg/seaice) to advect sea-ice.
649    o model/src:
650      - implement Finite-Volume method for (hydrostatic) presure gradient
651        from S.-J. Lin (QJRMS 1997), for atmosphere using sigma-coordinate.
652    o pkg/seaice: implement EVP* by Lemieux et al. (2012).
653      - In order to be compatible with the default EVP code, this requires changing
654        the EVP code around a little; and because any small change immediately
655        breaks the lab_sea.hb87 verification experiment, the reference output is
656        updated two times (each time the remaining aggrement was only 2 digits):
657        - after replacing 1/dt by 1*recip_dt with a precomputed recip_dt
658        - after replacing 1/(1+0.5*dt/tau) by a/(a+1), with a=2*tau/dt
659        The adjoint test lab_sea.evp also needed to be updated.
660      - Turn on EVP* by setting SEAICE_deltaTevp as before, and setting
661        SEAICEuseEVPstar=.true.; for EVP* SEAICE_deltaTevp does not need to be
662        a factor of SEAICE_deltaTdyn, and you can set the number of EVP steps
663        explicitly with SEAICEnEVPstarSteps (thereby overriding the default of
664        INT(SEAICE_deltaTdyn/SEAICE_deltaTevp)). Controlling EVP* is deliberately
665        kept obscure, because I need to test it a little more.
666    o pkg/cheapaml:
667      - fix few incorrect type (_RL/_RS) in subroutine calls.
668    o pkg/seaice:
669      - new S/R SEAICE_MAP_RS2VEC (similar to SEAICE_MAP2VEC) to map _RS arrays
670        to _RL vector; this fixes JFNK code when compiling with "-use_r4" option.
671    o model/src:
672      - add a warning if using select_rStar=2 with nonlinFreeSurf <> 4;
673        change (in input_ad*/data) select_rStar from 2 to 1 for AD verification
674        experiments global_ocean.cs32x15 & tutorial_tracer_adjsens (+ update output)
675    o pkg/cheapaml:
676      - replace "273.1 _d 0" by celsius2K in pkg/cheapaml/cheapaml.F and
677        update output of experiment cheapAML_box.
678      - store in CHEAPAML.h coeffs ssq[0:2] for saturation specific humidity,
679        and set them only in one place (cheapaml_readparms.F).
680      - replace "273.16 _d 0" by celsius2K & replace "3.14159 _d 0" by constant "PI"
681      - remove re-setting of main-model parameter "celsius2K" (in cheapaml_readparms)
682        and re-setting of cheapAML params "lath" & "p0" (in cheapaml_init_varia).
683    o model/src/the_main_loop.F:
684      - fix revision 129 : need both ALLOW_ECCO and ALLOW_ECCO_EVOLUTION.
685    o pkg/seaice:
686      - remove legacy branch code.
687      - retire SEAICE_GROWTH_LEGACY and SEAICE_CAP_HEFF accordingly.
688    o verification/*/code*/SEAICE_OPTIONS.h:
689      - remove documentation for retired CPP flags (SEAICE_GROWTH_LEGACY,
690        SEAICE_CAP_HEFF).
691    o pkg/cheapaml:
692      - use standard routine (S/R GET_PERIODIC_INTERVAL) to decide when it is time
693        to load new forcing fields.
694      - add missing "_d 0" where it's needed; + some editing (improve indentation).
695      - remove switch to "-r8" compiler option (no longer needed) in verification
696        cheapAML_box, keep same output (small trucation error differences).
697    o verification/offline_exf_seaice:
698      - add thermodynamics only test.
699    o verification/cheapAML_box:
700      - split the domain in 8 (2x4) tiles; add MPI and multi-threaded test;
701        keep same output (same 14 digits for cg2d).
702      - switch on "-r8" compiler option (some numerical values are missing
703        the "_d 0") and update output (only 6 digits for cg2d were preserved).
704    
705    checkpoint64b (2012/12/24)
706    o pkg/cheapaml:
707      - remove un-used variables (Qnet,EmPmR) from pickup files.
708      - store tendency of advected variables into cheapaml pickup file
709        and fix the AB-2 restart.
710    o verification/offline_exf_seaice and lab_sea adjoint:
711      - switch to new code (#undef SEAICE_GROWTH_LEGACY).
712      - switch to 4 time steps in offline, consistent with lab_sea.
713      - match parameters from SEAICE_GROWTH_LEGACY branch in data.seaice.
714      - update results after change of experiment seaice.
715    o pkg/seaice:
716      - remove option SEAICE_MULTICATEGORY; has been replaced with run-time
717        parameter SEAICE_multDim. Issue a warning if SEAICE_MULTICATEGORY is
718        still defined since SEAICE_multDim needs to be set to MULTDIM value (from
719        SEAICE_SIZE.h) to recover previous #define SEAICE_MULTICATEGORY default.
720    o model/src:
721      - add run-time parameter to select CG2D solver minimum-residual solution
722        (in case of a poor convergence).
723    o pkg/seaice/seaice_lsr.F
724      - move calculation of matrix coefficients into new
725        S/R SEAICE_CALC_LSR_COEFFS; for now this routine remains in the same
726        file; the main purpose of this change is to be able to reuse the code
727        in S/R SEAICE_PRECONDITIONER
728      - modify the computation of the residual so that the mass of sea-ice
729        is not used twice; this simplifies the calculations, but since
730        the residual is never used except when LSR_mixIniGuess.ge.4---and this is
731        not tested in testreport---this does not affect the testreport results.
732    o verification/seaice_obcs:
733      - disable SEAICE_GROWTH_LEGACY; reset input files to match those of
734        verification/lab_sea/input.salt_plume; changes results/output.txt*
735    o model/src:
736      - adapt quasi-hydrostatic formulation to work with p or p* coordinate.
737    o pkg/seaice:
738      - improve description of parameters in seaice_fgmres.F and start
739        cleaning up the code
740      - change name of SCALPROD to SEAICE_SCALPROD and modify meaning of
741        second argument
742      - add a metric based on grid cell area to SEAICE_SCALPROD; update
743        results of offline_exf_seaice.dyn_jfnk
744      - compute initial residual norm in seaice_jfnk based on SEAICE_SCALPROD
745    o pkg/aim_v23:
746      - fix an other bug in dissipation heating (grid-cell area was missing).
747    o model/src + pkg/seaice:
748      - add global (multi-tile) linear solver for pair of tri-diagonal system
749        along X and Y lines, respectively for U and V component.
750        Note: 1) MPI and cube-exchange not yet coded.
751            2) probably not accurate for poorly conditioned / large size problem.
752      - add option for SEAICE_LSR to use global (multi-tile) tri-diagonal solver;
753        default: not compiled and not used.
754    o pkg/seaice:
755      - first attempt at a multi-threaded fgmres solver for the JFNK solver:
756        introduce bi/bj loops and use global_sum_tile_rl instead of
757        mpi_allreduce in seaice_fgmres.F
758      - improve diagnostics output for fgmres solver (seaice_fgmres.F)
759      - replace a few unnecessary goto statements by if-blocks  (seaice_fgmres.F)
760      - add a verification experiment for JFNK in offline_exf_seaice
761    o verification:
762      - change (for now, only fwd test) offline_exf_seaice experiment:
763        use a re-entrant channel with idealized coastline (trapezoidal shape)
764        at southern boundary to explore seaice dynamics and thermodynamics
765        with simple forcing. Main set-up has dynamics+thermo and SST relaxation;
766        secondary test (input.thsice) use thermodynamics only with SST relaxation.
767      - add seaice-dynamics only secondary test using LSR and pkg/thsice advection.
768    o pkg/exf:
769      - disable "sstExtrapol" when Nr=1
770    o verification:
771      - add new experiment "cheapAML_box" (simple 1 layer set-up from Bruno Deremble)
772        to test pkg/cheapaml.
773    o pkg/aim_v23 & pkg/shap_filt:
774      - fix dissipation heating (erroneous gravity multiplication factor).
775    o pkg/seaice:
776      - remove unused field pressPre from jfnk solver
777      - rename two subroutines in seaice_preconditioner.F
778  o eesupp/src:  o eesupp/src:
779     - S/R MDSFINDUNIT avoids reserved unit numbers (scrUnit1, eeDataUnit ...)     - S/R MDSFINDUNIT avoids reserved unit numbers (scrUnit1, eeDataUnit ...)
780  o pkg/seaice/seaice_preconditioner.F: fix preconditioner once again  o pkg/seaice/seaice_preconditioner.F: fix preconditioner once again

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