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revision 1.1391 by mlosch, Wed Mar 9 16:18:06 2011 UTC revision 1.1525 by heimbach, Mon Oct 31 03:30:19 2011 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/ctrl/ctrl_get_gen_rec.F: catch the case of xx_genperiod=0.  o pkg/seaice adjoint of LSR:
8      - substantially rework STORE dirs.
9      - add new flag SEAICE_LSR_ADJOINT_ITER and parameter SOLV_MAX_FIXED
10        this flag will do SOLV_MAX_ITERS but only store SOLV_MAX_FIXED fields
11        and only perform SOLV_MAX_FIXED adjoint iters.
12      - now produces non-zero LSR-related gradients, and acceptable gradients for
13        An's zonal (x-z) test case (to be checked in)
14      - lab_sea: produces acceptable gradients for lab_sea with forward/backward LSR
15        (but these are screwed up by the thermodynamics in the first place);
16        reduce from 4 to 3 timesteps to avoid t.d. issue as temporary solution;
17        output_adm.txt also reflects changes to seaice_lsr
18      - global_ocean.cs32x15:
19        * the "default" input_ad.seaice has been re-defined to always exclude dynamics
20          (output_adm.seaice.txt was updated)
21        * new input_ad.seaice_dynmix tests a forward LSR / backward free-drift
22          (output_adm.seaice_dynmix.txt)
23    o test-exp. exp4+stevens:
24      - switch off pTracers and nonHydrostatic (restart problems with NH); update output
25    o pkg/seaice (lsr solver):
26      - put coriolis term into FORCEX,Y (as in seaice_evp.F; previously in rhsU,V only);
27        update output (change truncation) of FWD test exp lab_sea & global_ocean.cs32x15
28      - fix SEAICEuseFREEDRIFT for new OBCS version (ndef OBCS_UVICE_OLD)
29      - new parameter "LSR_mixIniGuess" allows (if=2,4) to mix free-drift solution
30        into initial guess for linearised solver; use weight ~ (1/err)^2,4.
31      - compute (with new S/R) and print initial (+ free-driff sol. if available)
32        and final residual of linearised system.
33    o pkg/pp81: add diagnostics for vertical eddy viscosity and diffusivity
34      (requires new subroutines pp81_init_fixed.F/pp81_diagnostics_init.F)
35    o pkg/obcs: Stevens BCs (still only for east and west)
36      - fix Stevens BCs by using intermediate velocities of previous
37        time step as "baroclinic" contribution rather velocity of one grid cell
38        inside the boundaries; more consistent but makes the entire treatment
39        more complicated, requires new pickup files and two new S/Rs:
40        obcs_copy_uv_n and obcs_save_uv_n
41        keep old version with flag OBCS_STEVENS_USE_INTERIOR_VELOCITY
42        (undefined by default)
43      - silently move computation of some grid factors into separate loops to
44        save some recomputations
45      - add a hack for non-linear free surface
46      - add a verification experiment to exp4 that tests this code
47    o make gluemnc/xplodemnc work with (moron) non-GNU shell tools
48    
49    checkpoint63d (2011/10/25)
50    o pkg/obcs + seaice-dynamics:
51      - new implementation calls OBCS_APPLY_UVICE (in seaice_dynsolver.F) before
52        solving for uIce,vIce and prevent SEAICE_LSR or SEAICE_EVP to modify OB
53        values (consistent with an implicit method).
54      - add option OBCS_UVICE_OLD (in OBCS_OPTIONS.h, defined by default) to
55        return to older implementation (same results as before); note that none of
56        the "experimental" OBCS_SEAICE options are implemented in the new version.
57      - switch test exp. seaice_obcs to use new version (update output).
58    o pkg/seaice:
59      - add few stop (B-grid & CS-exch, B-grid & obcs, AUTODIFF & SEAICE_maskRHS)
60      - add parenthesis in Water-Ice drag calculations (evp & lsr);
61      - in seaice_lsr.F, simplify and fix AA3 setting in case sNx or sNy=1;
62        and fix case SEAICE_waterDrag=0 (but unstable if no or little seaice)
63      - update output of test exp lab_sea that uses evp or lsr (fwd+ad)
64        and global_ocean.cs32x15 (icedyn & seaice fwd+ad).
65    o pkg/layers:
66      - Include potential density as new coordinate (Thanks to David Munday)
67    o pkg/dic:
68      - Remove subroutine CALC_PCO2_APPROX_CO3 from carbon_chem.F and add
69        carbonate computation/output to CALC_PCO2_APPROX
70    o pkg/generic_advdiff
71      - make TAF generate code that vectorizes:
72        gad_dst3fl_adv_*.F, gad_u3c4_impl_r.F
73    o model/src:
74      - improve vectorization also for adjoint code of
75        solve_tridiagonal and solve_pentadiagonal. As this requires up to
76        5 new 3D-fields, this code is only turned on for the combination of
77        ALLOW_AUTODIFF_TAMC and TARGET_NEC_SX. Also remove error message
78        for singular matrix check (only for TARGET_NEC_SX).
79      - remove hard-wiring of CPP-flag ALLOW_SOLVERS_KLOOPINSIDE to
80        ALLOW_AUTODIFF. This flag now needs to be set outside of
81        solve_tri/pentadiagonal.F
82    o pkg/exf:
83      - fix previous modif in exf_readparms.F (revision 1.66: treatment of
84        optional namelist EXF_NML_OBCS).
85      - add many debug-print (to trace down where pkg/cal error msg comes from)
86    o pkg/mom_vecinv/mom_vi_hdissip.F
87      - rearrange loops so that vectorization is improved and in particular
88        the adjoint routine vectorizes. The code is a little longer now, but I
89        think easier to read.
90        Note: CPP-flag MOM_VI_ORIGINAL_VISCA4 is not tested.
91    o pkg/seaice:
92      - allow to specify initial seaice velocity from files (uIceFile,vIceFile)
93    o pkg/exch2:
94      - alternative code (without tile x tile matrix) for cumulated (global) sum;
95        used as default; keep using matrix version in adjustment.cs-32x32x1.
96    o tools/build_options:
97      - after merging some MPI and/or multi-threads specific optfiles so that
98        the modified default optfile support both built (using genmake2 -mpi
99        for the MPI built, using genmake2 -omp for OpenMP built),
100        move now obsolete optfiles to tools/build_options/unsupported/
101       (add copy of email sent to support list in doc/optfiles_changes.txt)
102    
103    checkpoint63c (2011/09/28)
104    o pkg/ebm:
105      - fix ebm_zonalmean.F for several procs in Ydir (nPy > 1); update output of
106        test exp. global_ocean_ebm (affects machine truncation, 12 digits for cg2d)
107    o pkg/seaice (SItracer pickup)
108    * Simple code for pickup of SItracer fields (#define ALLOW_SITRACER)
109      To be done:
110      - thorough testing of missing fields in S/R seaice_read_pickup
111      - thorough matching between generic tracers and specific fields used
112        (e.g. volume-weighted age, area-weighted age, salinity, ...)
113    o pkg/grdchk:
114      - all procs calculate and print finite-difference gradient (for testreport)
115      - change description output used by testreport;
116      - AD testing: also compare and report Finite-difference gradient;
117        => update all output_adm*.txt
118    o test exp. global_ocean_ebm:
119      - switch back useRealFreshWaterFlux (no problem anymore with run-off);
120        and turn on exactConserve; update (fwd) output.
121    o pkg/seaice (LSR):
122      - print to STDOUT number of solver iterations at SEAICE_monFreq interval.
123      - modify solver to deal cleanly with u/v switch at face edges (CS-grid):
124        * identical results with non-CS topology (but save up to half of EXCH calls)
125        * no much changes in cs-32 verification tests since no ice at face edges
126         (differences due to convergence criteria, since nb of iterations changed)
127        * expect some differences on lat-lon-cap grid.
128        update FWD results of global_ocean.cs32x15 test exp. (icedyn & seaice)
129    o pkg/exch2:
130      - add new CPP option to disable Cumul-Sum matrix (to save storage when using
131        many tiles); until alternative coding is added, just add a stop.
132    o pkg/kpp:
133      - move ptracer/salt correction to KPP diffusivity from calc_3d_diffusivity.F
134        to S/R KPP_CALC_DIFF_PTR (+ add tracer-index to argument list).
135    o optfiles:
136      - merged few MPI specific (*+mpi*) and multi-threads specific (*+mth) optfiles
137        into corresponding standard one, which now support different build:
138        (when using "genmake2 -mpi" for MPI built, "genmake2 -omp" for OpenMP built)
139      - add "darwin_amd64_gfortran" optfile (initially from Constantinos, tested by Gael)
140    o pkg/obcs (seaice):
141      - add missing EXCH for uIce,vIce after applying OBCS;
142      - remove S/R EXF_SWAPFFIELDS_X/Y , disable S/R EXF_SET_OBCS_X/Y by adding
143        argument = number of levels to S/R EXF_SWAPFFIELDS_XZ/YZ and S/R
144        EXF_SET_OBCS_XZ/YZ ; update obcs_exf_load.F;
145      - fix EXF_SET_OBCS_XZ/YZ for multi-threaded (assuming loaded arrays are shared)
146      - verification exp. seaice_obcs: split domain in 2 tiles ; add SIZE.h_mpi
147        and eedata.mth for MPI and mutlti-threaded testing.
148    o pkg/flt:
149      - make FLT EXCH working with multi-threads (and MPI + multi-threads);
150      - use buffer for floats IO (trajectories & profiles); size set in FLT_SIZE.h;
151      - fix pickup and trajectories + profiles output with multi-threads;
152      - add parameter to select group of fields to write along trajectory and
153        profile (default unchanged);
154      - only call PORT_RAND* function when flt_noise <> 0;
155      - add multi-threaded test for verification exp. flt_example.
156    o eesupp/src:
157      - fix S/R ALL_PROC_DIE for MPI+multi-threads.
158      - USE_OMP_THREADING: check that number of threads (from eedata) matches
159        actual number (from env.var. setting).
160    o pkg/ebm:
161      - fix multi-threading in ebm_area_t.F ; clean-up EBM.h header file.
162      - add multi-threaded test for verification exp. global_ocean_ebm
163    
164    checkpoint63b (2011/08/29)
165    o pkg/ebm:
166      - fix sign of runoff;
167      - update directly forcing fields (Qnet,EmPmR) to use standard
168        external_forcing_surf.F (remove ebm_forcing_surf.F);
169      - avoid loading forcing fields a 2nd time (1rst time from ini_forcing.F);
170      - set either tauThetaClimRelax (in data) or tauThetaZonRelax (in data.ebm)
171        and apply relaxation towards corresponding SST field (2-D map or ZonAver).
172      - update global_ocean_ebm parameters file data and update output (fwd+ad).
173    o verification/matrix_example:
174      - split domain in 8 tiles (2x4); add SIZE.h_mpi and eedata.mth for
175        MPI and mutlti-threaded testing.
176    o pkg/matrix:
177      - change name of S/R MATRIX_INIT to S/R MATRIX_INIT_VARIA ;
178      - fix for multi-tiles (add bi,bj indices to exp/impMatrixCounter);
179      - fix for multi-threaded (remove DATA statement);
180      - use standard DIFFERENT_MULTIPLE function;
181      - add MATRIX_OPTIONS.h
182    o verification/matrix_example:
183       To allow to split the domain in several tiles, change the domain size
184        from 31x31 to 32x32 by adding 1 row (on Southern side) + 1 column (on
185        Western side) of land points.
186    o (*_)write_pickup:
187      - fix few bugs in mypackage_read/write_pickup.F
188      - in MDS_WR_METAFILES calls, replace "myTime" by a local copy into
189        array of length 1 (was caught by compiler syntax-check).
190    o pkg/diagnostics (velocity potential solver):
191      - fix initialisation of main diagonal matrix (for overlap values)
192    o tools/build_options:
193      - towards single optfile for MPI and non-MPI built: merge few +mpi optfile
194        into previously non MPI one (linux_am64 pgf77,open64,pathf90,ifort11)
195      - linux_amd64_gfortran: merge +mpi_generic version into standard optfile:
196        * move IEEE flags to DEVEL section; take IEEE flags from +mpi_generic ;
197        * FAST case: for now, keep -O3 with ini_masks_etc.F in NOOPTFILES list;
198        and use "-devel" testreport option for standard testing on baudelaire.
199    o pkg/grdchk:
200      - Assume that all gradient-check position are within the same tile
201        corresponding to global indices (iGloTile,jGloTile) and that
202        positions (i,j indices or nbeg) are local to this tile;
203      - set tile local-indices and proc. number according to tile global-indices;
204      - remove grdchkwhichproc from namelist (retired param);
205      - send adjoint gradient to all procs so that all procs print it to STDOUT;
206      - switch on MPI test for global_ocean.90x40x15 AD test experiment.
207    o adding package bbl (Bottom Boundary Layer)
208      description in MITgcm/pkg/bbl/bbl_description.tex
209      example/test experiment in MITgcm_contrib/bbl
210    o adjoint verifications
211      - changed 5 experiments to multi-tiles
212        * global_ocean.90x40x15
213        * obcs_ctrl
214        * offline_exf_seaice
215        * tutorial_dic_adjoffline
216        * tutorial_tracer_adjsens
217        changed reference output for those that crossed tile boundaries
218        (changed choices of gradient check positions)
219      - with same tiling, switch on MPI test for the last 4 (add SIZE.h_mpi)
220      - temporary bug fix in grdchk_loc.F for obcs
221    o genmake2 & testreport
222      - add target "obj" (just for OBJFILES files) to Makefile;
223      - add option to specify FEXTRAFLAGS on command line.
224    o pkg/mypackage:
225      - remove bi,bj arguments from argument list of S/R MYPACKAGE_CALC_RHS
226    
227    checkpoint63a (2011/08/02)
228    o pkg/diagnostics (velocity potential):
229      - fix velocity-potential calculation when using OBCS: balance net inflow
230        at each level (new S/R OBCS_DIAG_BALANCE).
231      - fix some of the problems with OBCS in stream-function calculation.
232    o pkg/exf/exf_readparms.F
233      - make treatment of optional namelists (EXF_NML_04, EXF_NML_SGRUNOFF,
234        EXF_NML_OBCS) more consistent, so that you need not have these lists
235        in data.exf when they are not used.
236    o optim/optim_readdata.F:
237      - add some output about obcs variables that might help debugging
238      - add a check about nvarlength
239    o pkg/ctrl: once again, fix computation of endrec in s/r ctrl_init_rec
240    o pkg/diagnostics (velocity potential):
241      - fix mask for OBCS (still problems in stream-function with OBCS);
242      - add specific parameter (default = main code CG2D params) for solver;
243      - in case of poor convergence, use solution corresponding to lowest residual.
244    o pkg/seaice/seaice_growth.F: small changes that permit vectorizable
245      adjoint code. In general statements like tmpscal=fld(i,j) are problematic
246      and should be avoided where possible.
247    o model/src (rStar):
248      - include r* effect on reference-state (PhiRef) in totPhiHyd
249        (so that it's really the potential anomaly at the cell center);
250        affect solution only if z* with full pressure in EOS.
251      - test-exp global_ocean.90x40x15: reduce viscA4 (was not stable) and
252        update output (because of z* in totPhiHyd and viscA4 changes);
253      - keep the previous diagnostics as "PHIHYDcR" (closer to potential anomaly
254        @ constant r) until interpolation at constant r is implemented.
255    o pkg/diagnostics
256      - fix RCENTER diagnostics in case cell center is not at interface middle
257    o add code for TEOS-10 (www.teos-10.org, McDougall et al. 2011). Use
258      this eos with eosType = 'TEOS10', in data (PARM01). This eos implies
259      that THETA and SALT are "conservative temperature" and "absolute
260      salinity"
261    o pkg/ctrl
262      - fix computation of endrec in s/r ctrl_init_rec
263      - ctrl_pack/unpack_*: remove unused variables and some obsolete code
264    o pkg/seaice/seaice_growth.F
265      - fix recomputation with FENTY_AREA_EXPANSION_CONTRACTION code,
266        remove then obsolete STORE directives
267      - fix STORE directives for tice and tices, so that only the
268        appropriate part of the fields are stored (and not the entire
269        field); update global_ocean.cs32x15.seaice AD output.
270      - cosmetic changes: adjust CPP flags and indentation for better
271        legibilty
272    o pkg/autodiff: add mnc-output of adBottomDragFld (code contributed by
273      Chris Wilson)
274    o pkg/gmredi:
275       Add Sub-Meso Eddies parameterisation from Baylor (for now, disabled with TAF),
276       and test it in verification exp. "front_relax.bvp" (update output.bvp.txt)
277    
278    checkpoint63  (2011/07/11)
279    o pkg/exch2:
280     - rename+move: nTiles in W2_EXCH2_PARAMS.h --> exch2_nTiles in W2_EXCH2_TOPOLOGY.h
281     - exch2 version of Cumul-Sum routine: S/R W2_SET_MAP_CUMSUM set up the
282       (2*nTiles)x(nTiles) Cumul-Sum matrix and Master Proc collects all tiles X,Y
283       increments, calculates Cumul-Sum @ tile origin and sends results to each tile.
284    o pkg/diagnostics:
285     - deal with pairs of post-processed diags which are computed together; in
286       particular, re-order list of diags within 1 file to save 2nd computation.
287     - add S/R to compute velocity stream-function (called after velocity-potential
288       calculation) from divergence free transport -> new diagnostics "PsiVEL".
289     - add parameter to select grid-point location where PsiVEL == 0.
290    o eesupp/src:
291       new S/R to calculate cumulated sum on tiled array, corner grid-cell location
292       (specific S/R needed with exch2 topology - for now, just print an error msg)
293    o pkg/shelfice
294     - Implement friction velocity-dependent transfer coefficients following
295       Holland and Jenkins, JPO, 1999
296       Original code by M. Losch with small modifs.
297       Enable with CPP option SHI_ALLOW_GAMMAFRICT
298       and runtime flag SHELFICEuseGammaFrict
299    o verification lab_sea & global_ocean.cs32x15:
300     - use tools/xmakedepend (instead of cyrus_makedepend, in genmake_local):
301       does not miss some dependencies (but is slower) and also works with many files
302       (default makedepend limitation for AD built).
303     - use cyrus_makedepend in adjustment.128x64x1 (so that it still tested).
304    o pkg/diagnostics:
305     - add run-time parameter "useMissingValue" (def=False) to fill land-point
306        (i.e., where mask=0) with MissingValue ; used only in MNC output file.
307       This replaces CPP-option DIAGNOSTICS_MISSING_VALUE.
308     - Extend the use of "missing_value" setting from data.diagnostics for the case
309       of counter-diagnostics (where fraction-weight is zero). This applies both to
310       MNC and MDS output files.
311    o pkg/seaice/seaice_growth.F:
312      - add 'a priori' cap of latent heat flux based on actual mass considerations
313        when SEAICE_ADD_SUBLIMATION_TO_FWBUDGET is used in conjunction with the
314        non-legacy seaice_solve4temp.
315      - add diagnostic of the residual sublimation freshwater flux (the freshwater
316        flux taken from the ocean if the total actual latent heat fluxes exceed
317        the maximum)
318      - remove the CPP switch around the *_FWbySublim unit change and move diagnostic
319       fill for SIatmQnt, SIfwSubl, SIatmFW to the end of seaice_growth.F.
320      - add diagnostic of the actual sublimation freshwater flux (that is 0. ifndef
321       SEAICE_ADD_SUBLIMATION_TO_FWBUDGET) and of the latent heat flux (evap+sublim).
322      - bug fix : frWtrAtm needs a_FWbySublim ifdef SEAICE_ADD_SUBLIMATION_TO_FWBUDGET.
323      - bug fix : missing part to Martin's r_FWbySublim pathological case fix.
324    o verification 1D_ocean_ice_column:
325       made model domain truly 1x1x23 instead of 5x5x23 with only center cell (3,3,:) wet
326       update results
327    o pkg/diagnostics:
328     - Implement setting of "Post-Processed" diagnostics (corresponding to gdiag(5)='P')
329       which are not filled-up but computed from other diags ; In this case, the mate
330       diag points to the primary (filled-up) diag to used for post processing.
331     - Update Velocity-potential computation using post-processed diag framework.
332     ==> Change the ordering of fields and time-periods in MDS output file
333       when using periodic averaging: now writes one time record with the full set
334       of fields for this time period, then the next time reccord (it used to be
335       one field with the full set of time records then the next field).
336         Note: this is now similar to NetCDF (MNC) output file. <==
337    
338    checkpoint62z (2011/06/21)
339    o adjoint monitor:
340     - Add adjoint monitor output for packages exf, seaice
341       and update relevant testreport output
342    o pkg/seaice:
343     - re-order diags inits so that they appear in order in available_diagnostics.log
344     - added diags: hsnow thermo. rates of change, area preceeding ridiging process,
345       area/heff/hsnow preceeding thermodynamic growth/melt.
346     - modified diag: SIdA; output actual effect, as the description states.
347     - modified description: SIqneti, SIqneto, SIuheff, SIvheff, SIdAb*, HSNOW.
348     - retired redundant diags: SIyneg, SIfice, SIsnwice, SIthdgrh.
349       (SIyneg->SIdHbOCN; SIfice->SIdHbATC; SIsnwice->SIdHbFLO;
350        and SIthdgrh->SIdHbOCN+SIdHbATC+SIdHbATO)
351     - modified diags (2) : switch all SIdA*, SIdH*, SIdS* from delta to rates.
352     - added diagnostics for seaice generic tracers (SItr*).
353     - added SItrUnit and SItrNameLong run time param (for SItr* diags).
354     - in diag names, replaced 'PrTh' abbrev. of 'preceeding thermo' with 'PT'.
355     I. Fenty: 18-Jun-2011:
356     Minor changes to seaice package:
357     1) Retired old variables (A22, SEAICE_lhsublim, areaMax, areaMin, hiceMin) and
358        added some new ones (SEAICE_area_reg, SEAICE_hice_reg, SEAICE_area_floor)
359       - Differentiated "regularization variables" from "floor variables"
360        * areaMin became SEAICE_area_reg (old A22) and SEAICE_area_floor
361        * hiceMin became SEAICE_hice_reg (old hiceMin)
362          (with _reg meaning regularization variable)
363       - SEAICE_lhSublim becomes lhSublim, the sum of SEAICE_lhEvap and SEAICE_lhFusion
364        so as to ensure energy conservation when going between phases
365      - A22 was not used anywhere
366     2) Changed regularization procedure for heffActual and hsnowActual to ensure
367        well-boundedness and smooth adjoint in seaice_growth.F
368     3) Fixed a bug where seaice_solve4temp would not recognize ice-free grid cells
369        because the old regularization always set heffActual >= 0.05 cm
370     4) Changed the model so that the default behavior is to put a small (10^-5) "floor"
371        on AREA when HEFF > 0.
372      - went from requiring ALLOW_PRECLUDE_INFINITESIMAL_AREA to be defined to
373        requiring that DISABLE_AREA_FLOOR *not* be defined
374     Affected verifications:
375      - 1D_ocean_ice_column (output.txt output_adm.txt)
376      - global_ocean.cs32x15 (output.seaice.txt output_adm.seaice.txt)
377    o pkg/diagnostics:
378      - move MNC code from diagnostics_out.F into new diagnostics_mnc_out.F (2 S/R).
379      - rename S/R GETDIAG to DIAGNOSTICS_GET_DIAG and change type of 1rst argument
380        (was _RL, now integer) with option = 0 to retrieve all levels.
381      - add pieces of code to compute velocity potential at each level (new diagnostics
382        PhiVEL, works only when UVELMASS & VVELMASS are also turned on);
383        for now, using same params as CG2D (target-resisual, max Nb of iter ...).
384      - fix few issues with counter diagnostics in diagnostics_setdiag.F &
385        diagstats_setdiag.F (if diagnostic counter is itself a counter diag)
386        and in diagnostics_fract_fill.F (do not need a valid pointer for the
387        diagnostics counter-mate); check that definition of counter-diagnostic
388        includes a valid counter-mate (in diagnostics_set_levels.F).
389    o model/src (rStar):
390      - add rStar scaling factor in diags_phi_hyd.F (similar to calc_grad_phi_hyd.F);
391        affect solution only if z* with full pressure in EOS;
392        update output of test-exp global_ocean.90x40x15.
393    o pkg/seaice:
394      - introduce siEps=1e-5 parameter
395      - use areaMax in AREA update (part 4), consistent with ridging step (part 2.5).
396      - re-organize SEAICE_ADD_SUBLIMATION_TO_FWBUDGET code.
397      - introduce ALLOW_SITRACER and seaice_tracer_phys.F to handle generic seaice tracer.
398        For now it covers, and was tested for, ice salinity and age (attached to HEFF),
399        as well as ice cover age and ridging index (attached to AREA).
400        For now the run time parameters (in data.seaice/SEAICE_PARM03) are
401        SItrName (e.g. 'age') and SItrMate ('HEFF', which is the default, or 'AREA').
402        Up to SItrMaxNum=3 tracers can be used simultaneously.
403    o pkg/salt_plume:
404      -introduce SPsalFRAC run time parameter that sets the fraction of the
405       salt by-product of ice growth (SPsalFRAC*(1-SIsalFRAC)*salt typically)
406       that gets vertically redistributed (fluxed down) by pkg/salt_plume.
407    o model debug options:
408      - Switch reading of debugMode from S/R INI_PARMS (parameter file "data", stored
409        in PARAMS.h) to S/R EESET_PARMS (parameter file "eedata", stored in EEPARAMS.h).
410      - Refine debug-msg printing selection (3 new levels):
411        debugMode  : controls printing of debug messages (sequence of S/R calls).
412        debugLevel : controls printing of algorithm-relevant auxiliary/debug messages
413         debLevZero =  0 ; /* level of disabled aux. msg printing */
414         debLevA =  1 ; /* level of minimum  aux. msg printing */
415         debLevB =  2 ; /* level of low aux. print (report read-file opening)*/
416         debLevC =  3 ; /* level of moderate debug prt (most pkgs debug msg) */
417         debLevD =  4 ; /* level of enhanced debug prt (add DEBUG_STATS prt) */
418         debLevE =  5 ; /* level of extensive debug printing */
419        New debugLevel default: with default debugMode value (=F),
420          = 2 (debLevB) or = 1 (debLevA) in case ALLOW_AUTODIFF is defined.;
421          and if debugMode=T, default debugLevel = 4 (debLevD).
422        Relation with previous settings:
423         debLevB (=2) corresponds to former debLevA (=1)
424         debLevD (=4) corresponds to former debLevB (=2)
425        Note:
426         a) if debugLevel=0, skip WRITE_GRID call when nIter0 > 0 (same as before);
427         b) default debugLevel=1 is convenient in AD runs (avoid many file opening msgs);
428            to recover previous default, set debugLevel=2 (e.g. AD-test hs94.1x64x5)
429      - Add new parameter (printResidualFreq, read from PARM02 namelist) to print
430        detailed CG solvers convergence; off (=0) by default, except if debugLevel=5.
431    o pkg/obcs:
432      - change OBCSfixTopo default from True to False (should not change the results);
433        keep OBCSfixTopo=T in verification-exp. seaice_obcs.
434    o pkg/thsice:
435      - fix bug in thsice_calc_thickn.F (was introduced in version 1.18) in
436        2nd layer seaice sublimation (unlikely to happen)
437      - use Interior mask for OBCS in thsice_advection.F (similar to what is
438        done in gad_advection & seaice_advection).
439    o adjoint:
440      bug fix spotted by Gael Forget:
441      seaice_advection and thsice_advection still had
442      legacy CPP options to avoid CS corner updates for adjoint
443    o pkg/seaice:
444      => Change some of the defaults (2011/05/29):
445         - change SEAICEuseFluxForm default (from False to True)
446         - change DIFF1 default (from 0.004 m/s to 0. m/s)
447         And print warnings if DIFF1 is not set in data.seaice and centered
448          avection scheme is used without any diffusion.
449      also:
450      - fix seaice_diffusion calls in default AdvScheme part of seaice_advdiff.F;
451      - set SEAICEdiffKh[] default in the same way as SEAICEadvSch[]
452      - stop if DIFF1<>0 with SEAICEadvScheme <> 2, if DIFF1<>0 with any
453        other non-zero SEAICEdiffKh[] diffusivity, if SEAICEadvSalt=T with
454        #undef SEAICE_VARIABLE_SALINITY, if SEAICEadvAge=T with #undef SEAICE_AGE.
455      update results of test exp.:
456         lab_sea: output.fd (switch to AdvScheme=33 with diffKh=20)
457             output.hb87, output_adm.evp (SEAICEuseFluxForm=T and diffKh=200)
458             output_adm.noseaicedyn (SEAICEuseFluxForm=T)
459         offline_exf_seaice: output.seaicetd, output_adm (SEAICEuseFluxForm=T)
460         seaice_obcs: output (SEAICEuseFluxForm=T)
461      and prescribe old default for SEAICEuseFluxForm (=F) and DIFF1 (=0.004)
462          for standard fwd & AD lab_sea tests (to keep the same output).
463    o pkg/seaice/seaice_growth.F:
464      - use Ian Fenty's capping formulas for actual ice
465      thickness thoughout EVOLUTION branch.
466      - put treatment pathological case #2) in CPP brackets
467      (ALLOW_AVOID_INFINITESIMAL_AREA, undef by default).
468      - update global_ocean.cs32x15 and 1D_ocean_ice_colum results accordingly.
469    o pkg/seaice:
470      - seaice_diffusion.F : remove the min(DX,DY) factor permanently;
471      pass the Laplacian diffusivity (in m^2/s) diffKh as a parameter;
472      also pass fac as a param, which can be 1. (to update the tendency
473      field) or the time step (to update the field itself).
474      - seaice_advdiff.F: for multidim, call seaice_diffusion with
475      e.g. SEAICEdiffKhHeff and with fac=1; for single-dim, call
476      seaice_diffusion with e.g. SEAICEdiffKhHeff and with fac=time step.
477      - SEAICE_PARAMS.h, seaice_readparms.F, seaice_check.F :
478      hooks to handle SEAICEdiffKhHeff, SEAICEdiffKhArea, etc.
479    o pkg/seaice:
480      diffusion with centered advection scheme (diffus.F & advect.F):
481      - simplify S/R DIFFUS (put deltaT & DIFF1 factor outside, move EXCH outside)
482        to just compute the laplacian of input-field.
483      - unroll k loop (harmonic,biharmonic diff) in advect.F to save 1 exch call.
484      - fix flux-form version in diffus.F to conserve tracer.
485      update output of lab_sea.fd & lab_sea.hb87 (1rst set of modif affects
486       machine truncation) and lab_sea.salt_plume (conservative flux-form modif)
487    
488    checkpoint62y (2011/05/26)
489    o pkg/seaice:
490     - seaice_growth.F : in EVOLUTION branch, always include
491       a_QSWbyATM_cover in qnet (as it should be).
492     - verification/global_ocean.cs32x15 : update results accordingly
493       (output.seaice.txt output_adm.seaice.txt).
494    o pkg/seaice + obcs:
495     - use maskInW & maskInS in multi-dim advection and biharmonic diffusion:
496       equivalent of assuming no tracer gradient outside the OB region.
497       update output of seaice_obcs (uses DIFF1 <>0 => biharmonic diffusion)
498     - remove calls to OBCS_COPY_TRACER after EXCH calls (no longer needed
499       after changes above);
500     - obcs+seaice cleaning: apply seaice-tracer OB values to tracer field
501       only at OB location (instead of over a band of OLx width).
502    o pkg/seaice:
503     - fix wrong indices in old (non Flux-Form) diffusion default S/R diffus.F
504       (dxG(I+1, ...) changed to dxG(I, ...), no impact on Lat-Lon grid)
505    o pkg/obcs:
506      - split header file "OBCS.h" into 4 separated files:
507        OBCS_PARAMS.h, OBCS_GRID.h, OBCS_FIELDS.h & OBCS_SEAICE.h
508       Note: OBCS_PARAMS.h & OBCS_GRID.h can be included without OBCS_OPTIONS.h
509         (contain no conditional statement which depends on OBCS options).
510      - move "useOBCSYearlyFields" from "data.obcs" (hold in OBCS_PARAMS.h)
511        to parameter file "data.exf", namelist EXF_NML_OBCS (in EXF_PARAM.h).
512    o ctrl, cost, grdchk & autodiff pkgs:
513      - make options file more standard (like other {PKG}_OPTIONS.h file but
514        with AD_CONFIG.h); clean-up some of the included header files.
515    o pkg/obcs:
516      - do not mask tracer when applying OB (tracer == 0 could generate problems)
517      - apply tracer OB values to tracer field only at OB location (instead of
518        over a band of OLx width)
519      - clean-up obcs_apply_w.F & obcs_apply_eta.F (since less calls to these S/R)
520      - remove OBCS_MULTIDIM_OLD_VERSION code in gad_advection.F and remove
521        obcs_apply_tloc.F & obcs_apply_sloc.F
522    o obcs in model/src:
523      - call OBCS_APPLY_W only if NonHydrostatic.
524      - call OBCS_APPLY_ETA only if NonLinFreeSurf.
525      - reset dEtaHdt and wVel to zero outside OB interior region ;
526      - leave tracer unchanged outside OB interior region: This has no effect
527        on the solution but just to prevent unrealistic tracer value outside OB.
528      - zero out velocity outside OB interior region: This has no effect on
529        the solution but just to prevent unrealistic velocity outside OB.
530    o obcs and non-lin free-surf:
531       move call to OBCS_APPLY_R_STAR from update_r_star.F to calc_r_star.F
532       and call to OBCS_APPLY_SURF_DR from update_surf_dr.F to calc_surf_dr.F
533       + add argument "etaFld" to OBCS_APPLY_R_STAR & OBCS_APPLY_SURF_DR:
534       this fixes missing EXCH + get consistent eta OB value (+ fix restart).
535       update results of test-exp. exp4(nlfs).
536    o exp4 (nlfs) test-exp:
537       use OBC for Eta at Western & Eastern OB (to test prescribing Eta
538       with NonLin-FreeSurf); update output.nlfs.txt
539    o obcs and 2d/3d solver norm:
540       use interior masks (maskInC) to cancel out cg2d & cg3d matrix coeff at OB
541       and outside OB interior region (will allow to place OB further inside the
542       domain). Depending on the domain, can affects cg2d-Norm (previous
543       cancellation outside OB was only partial), e.g. in exp4 & obcs_ctrl,
544       and cg3d-Norm (previous Norm was computed before canceling OB terms),
545       e.g. in tutorial_plume_on_slope.
546      - update output of exp.: exp4 (x2), obcs_ctrl and tutorial_plume_on_slope.
547    o pkg rbcs:
548      - split RBCS.h into 3 files: RBCS_SIZE.h, RBCS_PARAMS.h & RBCS_FIELDS.h
549      - add capability to apply relaxation to horizontal velocity uVel & vVel.
550    o pkg/grdchk: add gradient check for control variable xx_shifwflx
551    o pkg/shelfice/shelfice_init_fixed.F
552      fix CPP-flag combinations
553    o pkg/seaice: Merge iceage code of Pierre Rampal
554      * update/change/correct ice age calculations
555      * add age updates for pathological cases
556      Probably needs more testing...
557    
558    checkpoint62x (2011/05/13)
559    o pkg/mom_vecinv:
560       high-order vorticity scheme: use interior masks (maskInW & S)
561       to zero-out (outside OB) gradient of vorticity.
562    o verification exp.:
563       turn on "useEnergyConservingCoriolis" (better discretisation) in exp.
564       hs94.128x64x5 and seaice_obcs ; update results.
565    o pkg/obcs:
566      fix bug in OBeta for YZ sections in obcs_exf_load.F
567    o pkg/ctrl, pkg/shelfice, and optim:
568      - add new control variable xx_shifwflx (fresh water flux underneath ice
569        shelves). This is almost as tedious as obcs-ctrl, because the
570        variables needs its own mask.
571      - add a cost function term that penalizes the deviation of xx_shifwflx
572        from the first guess (zero) in analogy to other control variables
573    o pkg/shelfice:
574      - start basic adjoint
575    o pkg/ctrl:
576      - remove extra 2D field "for good measure" when initializing in
577        ctrl_set_globfld_[xy/xz/yz].F
578      - replace hard coded precision 32 (a bug) in ctrl_map_ini_gen by ctrlprec
579      - improve error messages in ctrl_set_unpack_*
580    o OBC implementation in momentum:
581       use interior masks (maskInC,W & S) in momentum S/R:
582       - multiply divergence, tension and some del^i.u or del^j.v by maskInC
583       - multiply del2u,del2v by maskInW/S (biharmonic viscosity)
584       - multiply horiz. grad of vorticity by maskInW/S (in Leith scheme)
585       - multiply gradient of wVel by maskInW/S in del2w calculation (NonHyd)
586       Motivation: fix/clean implementation of OBC with biharmonic-viscosity
587        (and also with Leith/Smagorinsky harmonic-viscosity).
588       Update output of experiment dome and exp4 (+nlfs).
589    o exp4 test-exp:
590      - turn on: nonHydrostatic, exactConserv, viscA4 (with momDissip_In_AB=F)
591        and prescribe time-varying OB (without pkg/exf) for zonal-velocity
592        at Western & Eastern Boundaries (+/- 1 per-cent); Also prescribe
593        time-varying OB at Western-side for wVel (NonHyd); update output.
594      - add secondary set-up (.nlfs) using NonLin FreeSurf (z*) + mom_vecinv
595        and biharmonic-viscosity ; also use prescribed time varying OB.
596    o pkg/obcs:
597      fix bug in OBWeta,OBWeta indices in obcs_apply_r_star.F
598    o model/src:
599      - fix startTime setting when baseTime<>0 & nIter0=0 are specified ;
600      - initialise startTime & nIter0 with unlikely values: allows to set one
601        from the other without ambiguity.
602    o seaice_obcs test-exp.:
603      add small diffK4T,S to test biharmonic diffusivity with OBCS ; update output.
604    o pkg/obcs:
605      - remove calls to OBCS_COPY_TRACER after EXCH for T,S & pTracer:
606        no longer needed with maskInC,W,S in pkg/generic_advdiff.
607    o pkg/seaice:
608      - retired SEAICE_SALINITY and SEAICE_salinity in favor of
609        SEAICE_VARIABLE_SALINITY and SIsalFRAC, respectively.
610      - fixed bug in the initialization of sea ice salinity variable HSALT
611        in seaice_init_varia.F  (removed dependence on ICE2WATR)
612    o fizhi-cs test exp.:
613       switch reference output convention for these 2 non-standard test-exp,
614        from: pgi  6.1-5 on faulks (FC.6, -of linux_ia32_pgf77+authors_fc5)
615          to: ifort 11.1 on baudelaire (FC.13, -of linux_amd64_ifort11)
616       reason: faulks might get retired soon and pkg/fizhi has still Pb with gfortran
617    o model/inc:
618      - change type of PmEpR array (from _RS to _RL) to fix restart (with "-use_r4")
619        of exp. global_ocean.90x40x15 (Suncronous time-stepping + Real-FW + NonLin-FS)
620    o pkg/seaice:
621      - fix calculation of saltFlux and saltPlumeFlux when using SEAICE_SALINITY
622    o verification/lab_sea, 1D_ocean_ice_column, seaice_obcs, global_ocean.cs32x15
623      - updated output*.txt files due to bug fixes in salt, saltPlumeFlux,
624        and initial HSALT
625    
626    checkpoint62w (2011/04/26)
627    o pkg/mom_fluxform:
628      - fix calculation of del2u & del2v (no-slip BC) when using Non-Lin Free-Surf.
629      - use parameter "sideDragFactor" in no-slip BC side-drag part.
630      - update output of exp. global_ocean.90x40x15
631    o pkg/mom_vecinv:
632      mask del2u & del2v (no effect on results, but cleaner & closer to mom_fluxform)
633    o update seaice exp.:
634      use more consistent parameter values (remove "backward compatability only":
635       ICE2WATR, SEAICE_lhSublim, SEAICE_cpAir, SEAICE_rhoAir + set rhoConstFresh)
636      related to thermodynamics seaice. Update output (fwd+AD) of exp.:
637       1D_ocean_ice_column (x2), lab_sea (x8), ioffline_exf_seaice (x2) & seaice_obcs
638    o update test-exp global_ocean.90x40x15:
639      o use default CD_CODE_OPTIONS file (Adams-Bashforth on CD Mom & Coriolis).
640      o increase Overlap size from 2 to 3 (to allow to test bi-harmonic Visc.)
641      o new pickup-files from a 100.yr run with pkg/down_slope (input.dwnslp params)
642      o turn on zStar & viscA4 in standard set-up (dir input/)
643        and update output files: output.txt & output.dwnslp.txt
644    o new AD-test experiment: obcs_ctrl
645      (From Matt MITgcm_Contrib/SOSE/BoxAdj) to test OBCS as control vector.
646    o pkg/dic:
647      fix two bugs in handling water vapour pressure in carbonate chemistry
648      and air-sea fluxes. Found by Val Bennington and Galen McKinley
649      (add DIC Option = WATERVAP_BUG to recover old results)
650      update output of tutorial_global_oce_biogeo (fwd+AD) & tutorial_dic_adjoffline
651    o adding allowInteriorFreezing option to check for water below freezing point
652      at depth and bring the negative heat anomaly to the surface level
653    o pkgs _fields_load:
654      - extend GET_PERIODIC_INTERVAL to deal with non-periodic case (from pkg/rbcs)
655      - use new S/R GET_PERIODIC_INTERVAL in pkgs:
656        bulk_force, cheapaml, cfc, dic, obcs (+ ctrl/ctrl_get_gen_rec), offline and
657        rbcs to get interpolation weights and time reccord number.
658      - fix multi-threading in aim_fields_load.F
659      - apply EXCH to temp arrays [0,1] after reading in dic_fields_load.F
660    o external_fields_load:
661      new S/R GET_PERIODIC_INTERVAL to calculate which time-record (and linear
662       interpolation weights) to use in a periodic time-series ; do not divide by
663       time-step to convert to integer:
664       - this fixes case where externForcingPeriod is not multiple of time-step
665          (Thanks to Christopher L. Wolfe)
666       - this fixes case where externForcingPeriod is an odd multiple of time-step
667         (was wrong by half of time-step); update results of tutorial_global_oce_in_p.
668      store index of time-record which is currently loaded:
669       - works without any assumption on sequence of calls to EXTERNAL_FIELDS_LOAD ;
670       - needed for the adjoint but not yet used because of extensive recomputations;
671         (to be fixed soon)
672    
673    checkpoint62v (2011/04/02)
674    o verification/1D_ocean_ice_column added to test Ian Fenty's
675      pkg/seaice_growth.F modifications for improving sea ice code differentiability
676    o update output of exp4, internal_wave, seaice_obcs, tutorial_plume_on_slope
677      (new velocity statistics after changing maskInW & maskInS definition)
678    o pkg/generic_advdiff with OBCS:
679      use maksInW & maskInS in advective flux and in biharmonic diffusion calculation:
680      equivalent to assumption of no tracer gradient outside the OB region.
681      This will affect the results if using obcs+biharmonic diffusion.
682      update output_adm.txt of experiment bottom_ctrl_5x5 (not expected since no obc)
683    o pkg/obcs:
684      change definition of maskInW & maskInS: leave OB edges inside (maskIn=1)
685      (e.g., maskInW(OB_Ie)=1 ) so that velocity normal-component at OB is still
686      in Interior region. No impact on solution but affects Velocity monitor stats.
687    o pkg/ptracers (adjoint)
688      New option AUTODIFF_PTRACERS_SPLIT_FILES for writing separate
689      tape file for each tracer
690    o model/inc/src and pkg/autodiff: add parameters that allow to turn
691      of parts of the adjoint code at run time. For now, there are only
692      useKPPinAdMode, useGMrediInAdMode, and useSEAICEinAdMode. These
693      parameters are set in data.pkg.
694      This is the lazy coward's version of doing this, but still useful for
695      debugging. In order to do it right, everything needs to be moved to
696      pkg/autodiff.
697    o pkg/autodiff: fix global_sum_tile_ad.F by resetting adsumPhi at
698      the end; this fixes the adjoint balancing code for open boundaries.
699    o pkg/ctrl:
700      - change behavior of xx_${varname}period to be analogous to exf-conventions:
701        xx_${varname}period =   0.,  means time-independent control part
702        xx_${varname}period = -12., means one-year-periodic monthly control part
703      - introduce helper routine ctrl_init_rec (part of ctrl_init.F) to
704        clean up ctrl_init a little, remove unused variables
705      - ctrl_init: fixed the handling of the start/endrec for obcs-variables
706      - move "call cal_GetMonthsRec" from s/r ctrl_get_gen to s/r ctrl_get_gen_rec
707    
708    checkpoint62u (2011/03/15)
709    o model/src:
710      - for the adjoint, change NonLin-FreeSurf initialisation sequence: fill-in
711        h0Fac from INITIALISE_FIXED and reset hFac to h0Fac in INITIALISE_VARIA ;
712      - in initialise_varia.F (except for ALLOW_DEPTH_CONTROL) remove 2nd call to
713        INI_DEPTHS, INI_MASKS_ETC & INI_LINEAR_PHISURF.
714    o pkg/ctrl/obcs/ecco:
715      - remove obsolete, unused, and partially broken code:
716        ctrl_obcsvol/ctrl_obcsbal/ctrl_volflux and code within
717        ALLOW_CTRL_OBCS_BALANCE
718      - put a stop statement into ecco/cost_obcsvol.F, but also add
719        cost_obcsvol to ecco_ad_diff.list
720    o pkg/ecco: fix counting cost function contributions for obcs (code
721      by Matt M.) and diffkr for diagnostics
722    o pkg/ecco, pkg/ctrl, pkg/grdchk:
723      add cost penalty terms for initial uvel, vvel, eta controls
724      and I/O for prior error files
725    o pkg/mdsio:
726       move mds_check4file.F from eesupp/src to mdsio_check4file.F ; add option
727       (new argument) to check for tiled file in mdsioLocalDir : this fix the
728       restart from pickup_som , pickup_dic (& dic_co2atm) with mdsioLocalDir.
729    o pkg/ctrl:
730     - ctrl_obcsbal.F, ctrl_obcsvol.F: replace last calls of ctrl_getrec by
731       ctrl_get_gen_rec, put a stop statement into ctrl_getrec. Remove
732       unused and superfluous variables
733     - ctrl_get_gen_rec.F: catch the case of xx_genperiod=0.
734  o pkg/ecco  o pkg/ecco
735   - enable adjoint of Stevens OB   - enable adjoint of Stevens OB
736  o pkg/ctrl/ecco/grdchk:  o pkg/ctrl/ecco/grdchk:
737    - remove global declaration of tmpfldx/yz and tmpfldx/yz2.    - remove global declaration of tmpfldx/yz and tmpfldx/yz2.
738      Fortunately, we do not have any tests for the numerous cpp-flagged      Fortunately, we do not have any tests for the numerous cpp-flagged
739      option of "obcs as control parameters" so we will never know      option of "obcs as control parameters" so we will never know
740      if this is an improvement (but at least now things compile).      if this is an improvement (but at least now things compile).
741    - remove an obsolete initialization from ecco_cost_init_barfiles.F    - remove an obsolete initialization from ecco_cost_init_barfiles.F
742    - fix some problems within never used ifdefs to make the code compile    - fix some problems within never used ifdefs to make the code compile
743  o pkg/obcs:  o pkg/obcs:
744   - Refine Interior mask definition to work with more complex OB (e.g.   - Refine Interior mask definition to work with more complex OB (e.g.
745     if OB_Ie < OB_Iw); In case default setting is not sufficient, allows to     if OB_Ie < OB_Iw); In case default setting is not sufficient, allows to

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