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revision 1.814 by jmc, Fri May 11 14:32:32 2007 UTC revision 1.853 by jmc, Wed Jul 25 21:23:29 2007 UTC
# Line 4  $Name$ Line 4  $Name$
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
8      for B-grid vector (not yet tested) and C-grid vector (<- only used
9      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
10    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
11      (#ifdef ALLOW_SALT_PLUME)
12    o gather_2d/scatter_2d: removed halo regions
13    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
14      scheme and the corresponding test case (under front_relax dir). For now,
15      only available with Skew-flux form and not yet tested in realistic set-up.
16      adjoint: store directives updated, but gradient checks deteriorated,
17      so maybe GM/Redi adjoint is now broken.
18    o seaice adjoint
19      * add AREA, HEFF, HSNOW as control variable
20        (should not change lab_sea results)
21      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
22    o pkg/seaice:
23      * added computation of saltFlux in seaice_growth;
24        For time being, sea ice salinity is assumed constant
25        contribution of snow flooding to freshening of sea ice is neglected.
26        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
27        defaults to 0.0 in order to maintain backward compatibility.
28        Typical values for SEAICE_salinity are 4 to 10 g/kg.
29      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
30      * added SEAICE_availHeatFrac, which specifies fraction of surface level
31        heat content used to melt or grow ice
32      * commented out cap of HICE: it helps keep ice thinner
33      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
34      * applied OBCS T/S mask to HEFFM sea ice mask
35    
36    checkpoint59d
37    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
38     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
39     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
40    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
41     and change default value of parameter "GM_Small_Number";
42     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
43       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
44       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
45    o pkg/ecco: cost function when applying pkg/smooth to controls
46    o pkg/ctrl: add forcingPrecond run time parameter
47    o pkg/seaice:
48     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
49     - fix bug in metric terms of u-equation in LSR solver (implicit part),
50       changes verification/lab_sea
51     - rearrange implicit part of u-equation in LSR solver to make it easier to
52       read, understand, and debug. This causes changes at the truncation level.
53     - fix (serious) bug in the boundary conditions (sign error in the implicit
54       part) of the LSR solver. Changes all LSR results.
55     - fixed problem with HSNOW initialization to avoid thick snow when AREA
56       is initilized with small values - does not change lab_sea results.
57     - added HsnowFile initialization capability
58    o pkg/smooth: addition to model/src and pkg/ctrl so allow
59     initialization of pkg/smooth and application to control vector
60    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
61    o dependencies: pkg/profiles requires pkg/cal
62    o pkg/profiles:
63     - added option ALLOW_PROFILES_GENERICGRID
64         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
65         that interpolation information (grid points and coefficients) is provided
66         within the netcdf input files.
67         -> sample matlab scripts can be found in MITgcm_contrib/gael
68         that allow you to prepare netcdf input files.
69     - also modified: cleaner include statements, cleaner error print statements,
70       cleaner stops when error, and more tests of the netcdf input files consistency.
71    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
72    o pkg/seaice:
73     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
74       requires a new routine: seaice_diagnostics_fill.F
75     - make sure that seaice does not move if not forced (pressure replacement
76       method, Hibler and Ip, 1995), changes results
77     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
78     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
79       It is turned off by default (=-1.), because it changes the results.
80     - make it possible to read AREA from a file, too.
81    
82    checkpoint59c
83    o add S/R and diagnostics for oceanic mixed-layer depth
84    o move GMRedi call after all vertical mixing schemes (including KPP)
85    o pkg/thsice:
86     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
87      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
88    o pkg/obcs:
89     - bug fix for balance code
90    o pkg/seaice:
91      - allow values of SEAICE_elasticParm > 1
92      - add new parameter SEAICE_evpTauRelax as an alternative
93        to SEAICE_elasticParm
94      - make lsr boundary conditions free slip (by default), changes result
95      - add code for no slip boundary conditions for lsr
96      - set minimum of zeta to zero (and not 4e8) (changes results)
97      - add a cap on AREA after advecting AREA if seaice_growth is not called
98    o change calculation of Visbeck K:
99      - no longer depend on tapering scheme; instead, compute slope (limited
100        by GM_maxSlope). this is equivalent to what was comuted before with
101        clipping or linear tappering.
102      - fix vertical averaging (wrong by 1/2 level)
103      - leave the old version (but will not be maintained) within
104        #ifdef OLD_VISBECK_CALC / #endif
105      - update output of exp. ideal_2D_oce
106    o change error catch in calc_r_star to improve vectorization
107    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
108      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
109    o adjoint:
110      Re-organized adjoint checkpointing according to Matt Mazloff
111      (but with modifs/completions/cleanups)
112      Storing is now bundled into large arrays to optimized I/O
113      (and second step in cleanup of the_main_loop)
114    
115    checkpoint59b
116    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
117      - export/import (between ocean & coupler) fields needed for ocean DIC.
118    o pkg/seaice:
119      - get rid of three more exchanges seaice_calc_viscosities (required
120        different loop boundaries in seaice_lsr and seaice_ocean_stress)
121      - bug fix in seaice_ocean_stress (update of lab_sea required)
122      - reduce loop boundaries to necessary minimum also in seaice_evp
123      - go back to the old way of computing deltaC/Z as the adjoint likes that
124        better
125    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
126      passive tracer to an Age Tracer) + update output.txt
127    o pkg/exf:
128      - implement A-grid / C-grid selection for wind-stress input files.
129      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
130      for now, in exf_bulk_largeyeager04.F only :
131      - change implementation for case where windspeed + 2. components wind-stress
132        are read-in. AND use rhoConstFresh to convert evap.
133    o pkg/seaice:
134      - use correct EXCH_UV for wind-forcing (on A-grid).
135      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
136        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
137  o pkg/exf:  o pkg/exf:
138    - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)    - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
139    EXF_INTERPOLATION:    EXF_INTERPOLATION:
# Line 34  o pkg/exf: some cleaning-up: Line 164  o pkg/exf: some cleaning-up:
164  o pkg/thsice:  o pkg/thsice:
165   fix few little problems, in thsice_calc_thickn.F:   fix few little problems, in thsice_calc_thickn.F:
166    - growth vertically (and not laterally) if iceFrac == iceMaskMax    - growth vertically (and not laterally) if iceFrac == iceMaskMax
167    - melt laterally only if hIce < hThinIce (as the comments say)    - melt only laterally if hIce < hThinIce (as the comments say)
168    and in thsice_extend.F:    and in thsice_extend.F:
169    - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)    - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
170    - start to form ice as soon as the minimum ice-volume is reachable.    - start to form ice as soon as the minimum ice-volume is reachable.

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