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revision 1.1823 by jmc, Tue Feb 12 22:26:11 2013 UTC revision 1.1855 by jmc, Thu Apr 11 20:53:23 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/shelfice:
8      - allow to specify the Ice-Shelf mass per unit area (instead of
9        shelficeLoadAnomaly) and do the conversion from one to the other
10      - move loading from file of shelficeLoadAnomaly from SHELFICE_INIT_VARIA
11        to SHELFICE_INIT_FIXED: (a) avoid some TAF recompution issues and
12        (b) will be loaded in time (before calling INI_PRESSURE) in case it is
13        needed in phi0surf for initial pressure calculation when useDynP_inEos_Zc
14      - update isomip experiment forward output (get machine truncation error
15        from conversion shelficeLoadAnomaly -> shelficeMass -> shelficeLoadAnomaly)
16    o verification/offline_exf_seaice:
17      revise data.seaice in input.thermo and input_ad and update results accordingly
18        HO = 0.2, SEAICE_areaLossFormula = 2,
19        SEAICE_growMeltByConv = .TRUE.,
20        SEAICE_doOpenWaterMelt = .TRUE.,
21      Improve consistency with input.thsice and fix the spurious 500m ice corners
22    o verification/global_ocean.cs32x15:
23      - set Energy Reference Level to liq. water @ 0 degC: temp_EvPrRn=0.,
24        in icedyn (thsice+seaice-dyn) test and update output.
25    o verification/offline_exf_seaice:
26      - adjust list of tested variables (with testreport) and update
27        standard test output with better slection of monitored fields.
28    o pkg/cd_code:
29      - swtich off Adams-Bashforth on the 1rst iteration. Update output of
30        experiment lab_sea.hb87
31    o tools/genmake2:
32      - change default makedepend from the system default to tools/xmakedepend:
33        When no makedepend is specified, select tools/xmakedepend it the test pass,
34        otherwise select the system default (if exist and pass the test) or
35        try to build cyrus-makedepend ; stop if none of the 3 works.
36    o pkg/exf & pkg/thsice:
37      - In case Energy-Reference-Level (ERL) is used (temp_EvPrRn=0), account
38        for energy content of Precip + RunOff & Evap. Assumes:
39       1) Rain has same temp as Air.
40       2) Snow has no heat capacity (consistent with seaice & thsice pkgs)
41       3) Run-Off comes at the temp of surface water (with same Cp)
42       4) Evap over ocean is released to the Atmos @ surf-temp (=SST); should be
43        put directly into Latent Heat flux & should use water-vapor heat capacity.
44       5) Evap over snow/seaice (pkg/thsice) assumes constant Lf+Lv (consistent
45        with snow having no Cp) => water vapor is released to Atmos @ 0^oC (=ERL).
46    o pkg/seaice: simplify the use of CPP flags in JFNK-related files
47        (compile when SEAICE_ALLOW_JFNK is defined)
48    o pkg/thsice:
49      - fix oceanic flux diagnostics & timeave (left from new sequence of calls
50        implementation): move THSICE_AVE call after the advection (called directly
51        from thsice_do_advect.F).
52    o verification/global_ocean.90x40x15 and OpenAD:
53      New experiment for OpenAD is identical to the one in input_ad except that
54        multiDimAdvection=.FALSE.,
55      There is still an issue with this.
56    o pkg/thsice:
57      - account for ice velocity (ocean relative velocity) in turbulent heat flux
58        at the base of the ice; update output of global_ocean.cs32x15 (icedyn)
59        and offline_exf_seaice (main test).
60    
61    checkpoint64f (2013/03/31)
62    o verification/OpenAD:
63      - new (smaller, without OAD_DEBUG) output_oadm.txt generated using gfortran.
64    o verification/isomip, pkg/shelfice and OpenAD:
65      - add OpenAD setup to this exp and make shelfice package work with OpenAD
66    o verification/tutorial_global_oce_biogeo:
67      - update AD and TLM output after turning off ALLOW_FE (in DIC_OPTIONS.h)
68    o verification/offline_exf_seaice:
69      - replace adjoint experiment (now similar to fwd input.thermo/ setup).
70    o verification/tutorial_tracer_adjsens, pkg/ptracers and OpenAD:
71      - add OpenAD setup to this exp and make ptracers package work with OpenAD
72    o pkg/seaice/seaice_evp.F:
73       mask the asymmetric contribution of the ice-ocean stress (when
74       the turningAngle is non-zero) over open water to avoid stripes
75       in the EVP-solutions after many EVP-substeps. This does not change
76       the verification experiment (because turningAngle=0 in that experiment),
77       but will affect other EVP solutions with turningAngle.ne.0
78    o verification, AD & TLM output:
79      - new TAF version 2.3.10 (previously 2.3.8) add more parenthesis in multiple
80        additions and multiplications which affect results at machine truncation
81        level. Update few AD output (1D_ocean_ice_column, bottom_ctrl_5x5,
82        lab_sea.noseaicedyn & offline_exf_seaice) and TLM output
83        (1D_ocean_ice_column & tutorial_tracer_adjsens.som81) which had only 12
84        digits of matching.
85    o pkg/seaice:
86       modify lsr-algorithm so that it vectorizes AND converges by using a
87       "zebra" method: split vector loop into two with step size 2; this
88       solves a general convergence problem for the JFNK solver on a vector
89       computer. It has the potential to even improve convergence for
90       non-vector machines, but it does change the results so it is turned
91       off by default. To turn on define CPP-flags SEAICE_VECTORIZE_LSR and
92       SEAICE_VECTORIZE_LSR_ZEBRA in SEAICE_OPTIONS.h
93    
94    checkpoint64e (2013/03/05)
95    o pkg/ecco and several verification experiments:
96       Remove special versions of the_model_main.F, the_main_loop.F, forward_step.F
97       from ecco package, and revert to unified routine in model/src/
98       Adjust verification experiments accordingly, especially gloal_oce_llc90
99       Should conclude long-standing work by Gael to reconsile the_main_loop with
100       ECCO and will enable OpenAD's revolve loop in ECCO setup.
101    o pkg/generic_advdiff:
102      - implement compressible flow method for multi-dim advection (similar to
103        gad_som_advect.F); add new option "GAD_MULTIDIM_COMPRESSIBLE" (since
104        TAF generates many recomputations) to use it; no yet coded with implicit
105        vertical advection.
106      - change experiment advect_cs (new output) and advect_xy (same output)
107        to test compressible flow multi-dim advection.
108    o pkg/generic_advdiff:
109      - fix SOM advection for unusual cases (linear Free-Surf in r*, other
110        cases where linear Free-Surf is not @ k=1, e.g., useShelfIce)
111    o pkg/seaice:
112      - fix bug in the no-slip implementation in seaice_calc_strainrates.F, this
113        bug affects two verification experiments (lab_sea and lab_sea.hb87),
114        recover old (wrong) results by setting noSlipFac = 2. in
115        seaice_calc_strainrates.F;
116      - add another averaging method for etaZ (etaZmethod=3), a mix of 2 and 0
117      - add runtime parameter SEAICE_JFNKepsilon for that finite difference
118        gradient in the Jacobian times vector operation (s/r seaice_jacvec)
119      - fix line search in seaice_jfnk.F (s/r seaice_jfnk_update)
120    o pkg/seaice: reorganize seaice_lsr.F to be able to reuse more code:
121      - new subroutines seaice_lsr_tridiagu/v
122      - introduce loop bounds i/jmin/max to be able to use a restricted
123        additive Schwarz method, but not used for now.
124      - rename SEAICE_CALC_LSR_COEFFS into SEAICE_LSR_CALC_COEFFS
125      - use new subroutines seaice_lsr_tridiagu/v in s/r seaice_preconditioner
126    o OpenAD support
127       Reorganize S/R call for overall time-stepping loop to facilitate
128       OpenAD revolve loop replacement
129       (new S/R main_do_loop.F)
130    o model/src:
131      - add 3-D array 3rd dimension to argument list of S/R ADAMS_BASHFORTH2/3;
132      - pkg/cheapaml: remove local S/R ADAMS2d and use instead standard S/R
133        ADAMS_BASHFORTH2.
134    o pkg/cheapaml:
135      - add new parameter (default=F, same as before) to disable full domain
136        (including land) periodicity in X & Y dir.
137      - new S/R CHEAPAML_COPY_EDGES to copy relaxation field into edges of
138        prognostics field ; merge the 2 S/R cycle_2d_tracer and timestep_2d_tracer
139        into single S/R CHEAPAML_TIMESTEP.
140    
141    checkpoint64d (2013/02/17)
142    o pkg/monitor (angular momentum):
143      - do not add Eta contribution to the total AM if using rigid-lid;
144      - correct for Adams-Bashforth in zonal-wind part (instead of in AM_eta).
145      - horizontal discretisation: compute Zonal wind contribution separately for
146        each component (instead of from cell centered averaged) and use the 4
147        grid-cell corner averaged value of Omega*(R*cos_Phi)^2 in AM_eta part.
148      - Check that AM is conserved with linear dynamics (momAdvection=F and linear
149        FreeSurf) if using vectorInvariant momentum.
150    o model/src (horizontal grid):
151      - move initialisation of all horizontal grid arrays to null value
152        from specific horizontal grid S/R to main S/R INI_GRID;
153      - add 2 new arrays to project model C-grid velocity on to zonal direction
154        (similar to AngleCosC & -AngleSinC but at U and V point location) and
155        compute them in S/R CALC_GRID_ANGLES.
156    o pkg/seaice: replace a hard coded parameter by a runtime parameter
157        SEAICE_JFNK_tolIter
158    o pkg/seaice: introduce a restricted additive Schwarz (RAS) method in
159        preconditioner for JFNK (run LSR into the overlaps as far as possible,
160        i.e OLx/y-2, but overwrite the solution in the overlaps)
161      - extend loop range in seaice_calc_viscosity
162      - add new parameters SEAICE_OLx/y (default = OLx/y-2)
163      - add flexible loop ranges to seaice_preconditioner, seaice_calc_lsr_coeffs
164      - slightly modify loops in tridiagonal solver lsr-preconditioner
165      - by default remove the extra exchange in seaice_preconditioner with a
166        replacement of an undocumented CPP flag by SEAICE_PRECOND_EXTRA_EXCHANGE
167      - modify offline_exf_seaice so that old results without RAS are reproduced
168        for output.dyn_jfnk.txt
169      in seaice_fgmres.F (unrelated to RAS)
170      - add a cpp-flag option for a re-ordered mapping (potentially more
171        efficient), but because this changes the results, turn it off by
172        default
173      - replace the save statement by local common blocks
174  o utils/matlab:  o utils/matlab:
175    - fix tile-offset in rdmnc.m when output was produced using EXCH2.    - fix tile-offset in rdmnc.m when output was produced using EXCH2.
176    - update cs_grid/bk_line scripts to use load_grid.m (in utils/matlab)    - update cs_grid/bk_line scripts to use load_grid.m (in utils/matlab)

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