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revision 1.1825 by mlosch, Fri Feb 15 15:20:03 2013 UTC revision 1.1880 by jmc, Tue Jun 18 13:33:34 2013 UTC
# Line 4  $Name$ Line 4  $Name$
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    checkpoint64i (2013/06/18)
8    o pkg/cheapaml:
9      - take src files from MITgcm_contrib/verification_other/offline_cheapaml/code
10        that enable the use of seaice (pkg/thsice thermo & pkg/seaice dynamics)
11        with pkg/cheapaml.
12    o utils/python: add subpackage for cubed sphere function, first example is
13        simple cs.pcol to plot 2D fields on a map
14    o pkg/streamice:
15      - This is a new package in MITgcm, which solves dynamic equations for ice
16         sheets and ice streams
17      - At the moment it is independent of atmosphere/ocean dynamics, or any
18        other physical packages in MITgcm, even ShelfIce (although it is anticipat-
19        ed that this will change)
20      - There is a new verification exercise that tests it, halfpipe_streamice,
21        evolves a 40x80 km ice stream/ice shelf (at coarse resolution) in a
22        rectangular embayment
23      - halfpipe_streamice is forward-only for now, will have TAF test soon
24      - for questions, email dgoldber@mit.edu
25    o pkg/thsice:
26      - fix filling of snow-precip diagnostic (SIsnwPrc) (left from the removing
27        of snowPrc from common bloc, on May 2nd, thsice_step_fwd.F revision 1.40);
28      - remove diagnostics 'SI_FrcFx' ( now identical to 'SI_Fract' with new
29         call sequence: ice-Thermo(thsice),ice-Dyn,ice-Advect );
30      - allow precip from pkg/cheapaml to make snow over seaice.
31    o pkg/cfc:
32      - move in separated header file (CFC_ATMOS.h) time-serie arrays of Atmos CFC
33      - remove atmos CFC 2-D arrays from common bloc (now local variables)
34      - change some hard-coded constant to run time parameter for reading and
35        and interpolating atmospheric CFC ; keep same default as previously.
36      - more flexible reading of Atmos CFC (number of records no longer hard-coded)
37      - put arguments in standard order: myTime, myIter, myThid
38      - use standard S/R GET_PERIODIC_INTERVAL for time interpolation of
39        atmospheric CFC ; fix for the case myIter < PTRACERS_iter0.
40      - fix calculation of surf tendencys for partial-cell and/or Non-Lin Free-Surf
41      - new routine to print summary of CFC params and check for consistency.
42    o pkg/cfc:
43      - change time interpolation for atmospheric CFC-11 (now same as for CFC-12);
44        update output (CFC-11) of experiment cfc_example and tutorial_cfc_offline.
45      - fix interpolation of atmphspheric CFC between Sorthern and Northern
46        hemisphere value.
47    o pkg/seaice:
48      - allow to use seaice dynamics without pkg/exf (e.g., using pkg/cheapaml)
49    o pkg/seaice: add Adams-Bashforth2 time discretization for ice dynamics;
50                  so far only for JFNK-solver, turn on with SEAICEuseAB2 = .TRUE.
51      - requires an additional time level that is stored in the pickup
52      - you can start with AB2 from a pickup without this time level with
53        pickupStrictlyMatch = .false.
54    
55    checkpoint64h (2013/05/26)
56    o pkg/cheapaml:
57      - replace one ()**.5 with SQRT + use temp var "cdu = tau/Du" (coare3_flux);
58        affect machine truncation (but exp cheapAML_box still pass with 13 digits).
59      - consistent treatment of uWind,vWind location: assume everywhere in
60        pkg/cheapaml that they are on C-grid (@ uVel,vVel location)
61        (Note: was already the case for Tair,Qair advection);
62        add option (INCONSISTENT_WIND_LOCATION) to recover old results.
63      - compute diabatic forcing only in the interior (excluding overlap regions)
64      - fill in array "Qsw" (for short-wave heating);
65      - add diagnostic for precip ; fill-in diagnostics for cheapAML state vars
66        before any update (consistent with MITgcm state var diagnostics);
67      - cheapaml_fields_load.F & cheapaml_init_varia.F : only fill outer edges if
68        non periodic ; + adjusted for uWind,vWind (C-grid).
69    o pkg/seaice:
70      - remove dependence of pkg/seaice versus pkg/exf (file: pkg/pkg_depend) and
71        add explicitly pkg/exf in experiments that currently use pkg/seaice.
72      - allows to compile pkg/seaice without pkg/exf.
73    o tools/OAD_support:
74      - use a local copy (ourRWCPinBd) to ensure index ourRWCP stays within bounds
75        of array "ourStepOf" in function rvNextAction (revolve.F90).
76    o pkg/aim_compon_interf renamed to pkg/atm_compon_interf
77      - change pkg name (to be used with other atmospheric physics pkg)
78        but by-pass CVS when making the new pkg so that we keep the CVS history.
79    o pkg/offline:
80      - call OFFLINE_FIELDS_LOAD from pkg/offline/offline_init_varia.F
81        (previously called from pkg/dic_surfforcing_init.F)
82    o model/src:
83      - re-order sequence of calls within packages_init_variables.F, using
84        standard order, except for:
85         DIAGNOSTICS_INIT_VARIA and OFFLINE_INIT_VARIA (called @ the top),
86         CTRL_MAP_INI and OBCS_INIT_VARIABLES (called @ the bottom)
87    o new pkg: atm_phys
88      - add entry point and source code (previously in contrib
89          verification_other/atm_gray/code_gray/) for new pkg "atm_phys"
90        (atmospheric physics pkg from P. O'Gorman and T. Schneider, JCl, 2008).
91      - re-order sequence of calls within packages_readparms.F,
92         packages_init_fixed.F and packages_write_pickup.F
93        (but skip packages_init_variables.F because of TAF issues).
94      - update contrib/*/atm_gray/ experiment.
95    o pkg/seaice (ITD code):
96      - simplify and fix the writing of pickup-files for ITD case
97    o pkg/seaice (ITD code):
98      - introduce floe size dependent lateral melt for ITD case;
99      - cleaning (avoid division by zero, change to f77 syntax, remove tabs)
100      - update seaice_itd experiment main output.
101    o pkg/thsice:
102      - remove snowPrc from common block THSICE_FLUX, in THSICE_VARS.h and
103        declared it locally (without bi,bj) in thsice_main.F & aim_do_physics.F;
104        changed accordingly pkg/atm2d.
105    
106    checkpoint64g (2013/05/01)
107    o pkg/exf ALLOW_RUNOFTEMP
108      - if defined,  river and glacier runoff temperature can be read-in from
109        runoftempfile; runoftempfile needs to have same format as runofffile
110    o pkg/thsice (& pkg/bulk_force):
111      - In case Energy-Reference-Level (ERL) is used (temp_EvPrRn=0), account
112        for energy content of Precip + RunOff & Evap (like with pkg/exf).
113      - change computation domain to always be the interior (without overlap).
114      - fix bug (wrong overlap) when using EXF and stressReduction > 0.
115    o verification/tutorial_global_oce_biogeo:
116      - add preliminary OpenAD setup (still has problems)
117    o pkg/seaice:
118      - turn some parameters for choosing the convergence criterion of
119        the inexact Newton method (JFNK) into runtime parameters for convenience
120      - clean up seaice_calc_viscosities.F: remove/retire two options for
121        SEAICetaZmethod (1,2), introduce area weighting for method 3; this changes
122        the results of lab_sea/input because a division has been replaced by
123        a multiplication with the reciprocal (sumNorm)
124      - modify offline_exf_seaice/input.dyn_jfnk/data.seaice to improve
125        convergence of solver (changes results, of course), and to test some
126        new features
127    o model/src:
128      - remove unused (since Aug 2006) S/R SET_WRITE_GLOBAL_PICKUP and its call.
129      - remove unused forcing field "dQdT" and associated parameter "dQdTFile".
130      - move forcing adjustment (balancing surface forcing) in specific S/R
131        where might also be applied exchanges (if needed) to forcing arrays.
132    o pkg/shelfice:
133      - allow to specify the Ice-Shelf mass per unit area (instead of
134        shelficeLoadAnomaly) and do the conversion from one to the other
135      - move loading from file of shelficeLoadAnomaly from SHELFICE_INIT_VARIA
136        to SHELFICE_INIT_FIXED: (a) avoid some TAF recompution issues and
137        (b) will be loaded in time (before calling INI_PRESSURE) in case it is
138        needed in phi0surf for initial pressure calculation when useDynP_inEos_Zc
139      - update isomip experiment forward output (get machine truncation error
140        from conversion shelficeLoadAnomaly -> shelficeMass -> shelficeLoadAnomaly)
141    o verification/offline_exf_seaice:
142      revise data.seaice in input.thermo and input_ad and update results accordingly
143        HO = 0.2, SEAICE_areaLossFormula = 2,
144        SEAICE_growMeltByConv = .TRUE.,
145        SEAICE_doOpenWaterMelt = .TRUE.,
146      Improve consistency with input.thsice and fix the spurious 500m ice corners
147    o verification/global_ocean.cs32x15:
148      - set Energy Reference Level to liq. water @ 0 degC: temp_EvPrRn=0.,
149        in icedyn (thsice+seaice-dyn) test and update output.
150    o verification/offline_exf_seaice:
151      - adjust list of tested variables (with testreport) and update
152        standard test output with better slection of monitored fields.
153    o pkg/cd_code:
154      - swtich off Adams-Bashforth on the 1rst iteration. Update output of
155        experiment lab_sea.hb87
156    o tools/genmake2:
157      - change default makedepend from the system default to tools/xmakedepend:
158        When no makedepend is specified, select tools/xmakedepend it the test pass,
159        otherwise select the system default (if exist and pass the test) or
160        try to build cyrus-makedepend ; stop if none of the 3 works.
161    o pkg/exf & pkg/thsice:
162      - In case Energy-Reference-Level (ERL) is used (temp_EvPrRn=0), account
163        for energy content of Precip + RunOff & Evap. Assumes:
164       1) Rain has same temp as Air.
165       2) Snow has no heat capacity (consistent with seaice & thsice pkgs)
166       3) Run-Off comes at the temp of surface water (with same Cp)
167       4) Evap over ocean is released to the Atmos @ surf-temp (=SST); should be
168        put directly into Latent Heat flux & should use water-vapor heat capacity.
169       5) Evap over snow/seaice (pkg/thsice) assumes constant Lf+Lv (consistent
170        with snow having no Cp) => water vapor is released to Atmos @ 0^oC (=ERL).
171    o pkg/seaice: simplify the use of CPP flags in JFNK-related files
172        (compile when SEAICE_ALLOW_JFNK is defined)
173    o pkg/thsice:
174      - fix oceanic flux diagnostics & timeave (left from new sequence of calls
175        implementation): move THSICE_AVE call after the advection (called directly
176        from thsice_do_advect.F).
177    o verification/global_ocean.90x40x15 and OpenAD:
178      New experiment for OpenAD is identical to the one in input_ad except that
179        multiDimAdvection=.FALSE.,
180      There is still an issue with this.
181    o pkg/thsice:
182      - account for ice velocity (ocean relative velocity) in turbulent heat flux
183        at the base of the ice; update output of global_ocean.cs32x15 (icedyn)
184        and offline_exf_seaice (main test).
185    
186    checkpoint64f (2013/03/31)
187    o verification/OpenAD:
188      - new (smaller, without OAD_DEBUG) output_oadm.txt generated using gfortran.
189    o verification/isomip, pkg/shelfice and OpenAD:
190      - add OpenAD setup to this exp and make shelfice package work with OpenAD
191    o verification/tutorial_global_oce_biogeo:
192      - update AD and TLM output after turning off ALLOW_FE (in DIC_OPTIONS.h)
193    o verification/offline_exf_seaice:
194      - replace adjoint experiment (now similar to fwd input.thermo/ setup).
195    o verification/tutorial_tracer_adjsens, pkg/ptracers and OpenAD:
196      - add OpenAD setup to this exp and make ptracers package work with OpenAD
197    o pkg/seaice/seaice_evp.F:
198       mask the asymmetric contribution of the ice-ocean stress (when
199       the turningAngle is non-zero) over open water to avoid stripes
200       in the EVP-solutions after many EVP-substeps. This does not change
201       the verification experiment (because turningAngle=0 in that experiment),
202       but will affect other EVP solutions with turningAngle.ne.0
203    o verification, AD & TLM output:
204      - new TAF version 2.3.10 (previously 2.3.8) add more parenthesis in multiple
205        additions and multiplications which affect results at machine truncation
206        level. Update few AD output (1D_ocean_ice_column, bottom_ctrl_5x5,
207        lab_sea.noseaicedyn & offline_exf_seaice) and TLM output
208        (1D_ocean_ice_column & tutorial_tracer_adjsens.som81) which had only 12
209        digits of matching.
210    o pkg/seaice:
211       modify lsr-algorithm so that it vectorizes AND converges by using a
212       "zebra" method: split vector loop into two with step size 2; this
213       solves a general convergence problem for the JFNK solver on a vector
214       computer. It has the potential to even improve convergence for
215       non-vector machines, but it does change the results so it is turned
216       off by default. To turn on define CPP-flags SEAICE_VECTORIZE_LSR and
217       SEAICE_VECTORIZE_LSR_ZEBRA in SEAICE_OPTIONS.h
218    
219    checkpoint64e (2013/03/05)
220    o pkg/ecco and several verification experiments:
221       Remove special versions of the_model_main.F, the_main_loop.F, forward_step.F
222       from ecco package, and revert to unified routine in model/src/
223       Adjust verification experiments accordingly, especially gloal_oce_llc90
224       Should conclude long-standing work by Gael to reconsile the_main_loop with
225       ECCO and will enable OpenAD's revolve loop in ECCO setup.
226    o pkg/generic_advdiff:
227      - implement compressible flow method for multi-dim advection (similar to
228        gad_som_advect.F); add new option "GAD_MULTIDIM_COMPRESSIBLE" (since
229        TAF generates many recomputations) to use it; no yet coded with implicit
230        vertical advection.
231      - change experiment advect_cs (new output) and advect_xy (same output)
232        to test compressible flow multi-dim advection.
233    o pkg/generic_advdiff:
234      - fix SOM advection for unusual cases (linear Free-Surf in r*, other
235        cases where linear Free-Surf is not @ k=1, e.g., useShelfIce)
236    o pkg/seaice:
237      - fix bug in the no-slip implementation in seaice_calc_strainrates.F, this
238        bug affects two verification experiments (lab_sea and lab_sea.hb87),
239        recover old (wrong) results by setting noSlipFac = 2. in
240        seaice_calc_strainrates.F;
241      - add another averaging method for etaZ (etaZmethod=3), a mix of 2 and 0
242      - add runtime parameter SEAICE_JFNKepsilon for that finite difference
243        gradient in the Jacobian times vector operation (s/r seaice_jacvec)
244      - fix line search in seaice_jfnk.F (s/r seaice_jfnk_update)
245    o pkg/seaice: reorganize seaice_lsr.F to be able to reuse more code:
246      - new subroutines seaice_lsr_tridiagu/v
247      - introduce loop bounds i/jmin/max to be able to use a restricted
248        additive Schwarz method, but not used for now.
249      - rename SEAICE_CALC_LSR_COEFFS into SEAICE_LSR_CALC_COEFFS
250      - use new subroutines seaice_lsr_tridiagu/v in s/r seaice_preconditioner
251    o OpenAD support
252       Reorganize S/R call for overall time-stepping loop to facilitate
253       OpenAD revolve loop replacement
254       (new S/R main_do_loop.F)
255    o model/src:
256      - add 3-D array 3rd dimension to argument list of S/R ADAMS_BASHFORTH2/3;
257      - pkg/cheapaml: remove local S/R ADAMS2d and use instead standard S/R
258        ADAMS_BASHFORTH2.
259    o pkg/cheapaml:
260      - add new parameter (default=F, same as before) to disable full domain
261        (including land) periodicity in X & Y dir.
262      - new S/R CHEAPAML_COPY_EDGES to copy relaxation field into edges of
263        prognostics field ; merge the 2 S/R cycle_2d_tracer and timestep_2d_tracer
264        into single S/R CHEAPAML_TIMESTEP.
265    
266    checkpoint64d (2013/02/17)
267    o pkg/monitor (angular momentum):
268      - do not add Eta contribution to the total AM if using rigid-lid;
269      - correct for Adams-Bashforth in zonal-wind part (instead of in AM_eta).
270      - horizontal discretisation: compute Zonal wind contribution separately for
271        each component (instead of from cell centered averaged) and use the 4
272        grid-cell corner averaged value of Omega*(R*cos_Phi)^2 in AM_eta part.
273      - Check that AM is conserved with linear dynamics (momAdvection=F and linear
274        FreeSurf) if using vectorInvariant momentum.
275    o model/src (horizontal grid):
276      - move initialisation of all horizontal grid arrays to null value
277        from specific horizontal grid S/R to main S/R INI_GRID;
278      - add 2 new arrays to project model C-grid velocity on to zonal direction
279        (similar to AngleCosC & -AngleSinC but at U and V point location) and
280        compute them in S/R CALC_GRID_ANGLES.
281  o pkg/seaice: replace a hard coded parameter by a runtime parameter  o pkg/seaice: replace a hard coded parameter by a runtime parameter
282     SEAICE_JFNK_tolIter      SEAICE_JFNK_tolIter
283  o pkg/seaice: introduce a restricted additive Schwarz (RAS) method in  o pkg/seaice: introduce a restricted additive Schwarz (RAS) method in
284      preconditioner for JFNK (run LSR into the overlaps as far as possible,      preconditioner for JFNK (run LSR into the overlaps as far as possible,
285      i.e OLx/y-2, but overwrite the solution in the overlaps)      i.e OLx/y-2, but overwrite the solution in the overlaps)

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