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revision 1.599 by jmc, Thu Jan 12 16:49:07 2006 UTC revision 1.634 by jmc, Fri Mar 17 16:24:23 2006 UTC
# Line 4  $Name$ Line 4  $Name$
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
8      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
9    o add on/off flag useOffLine for package OFFLINE
10    o seaice:
11      - modify advection so that it works also on the C-grid
12      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
13        problem in multi-tile runs with C-grid
14      - add flags for clipping ice velocities and/or masking solver forcing
15      - fix drag (ocean on ice) formulation and a bug that caused noise in the
16        C-grid solver
17      - added a few comments to seaice_diffusion.F
18      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
19        are now exclusive)
20      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
21        required re-ordering the code a little:
22       + make DAIRN global variable (defined in SEAICE)
23       + move computation of the viscosities eta and zeta into a new separate
24         routine (because I need to recompute them in seaice_ocean_stress.F)
25    
26    checkpoint58b_post
27    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
28      update output.txt of exp. aim.5l_cs.thSI
29    o various mnc cleanups and improvements:
30      + shrink lookup tables by factor of ~4
31      + better error reporting when running out of lookup space
32      + able to handle longer path/file names (up to 500 chars)
33    o adjoint:
34      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
35      - TBD: "hidden" mom_vecinv recomp. in dynamics
36    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
37     (allow to differentiate between forcing components using new integer flags:
38      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
39     and add new flag to put Dissipation tendency out of Adams-Bashforth.
40    o ecco
41      - enable trend removal from SSH anomaly obs.
42    o adjoint
43      - a fix for PmEpR when #undef EXACT_CONSERV
44      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
45      - try to fix "hidden" recomp. in forward_step for NLFS
46        (NLFS seems broken sometimes after I checked it in)
47    o seaice:
48     - add c-grid version of the dynamic solver:
49       + three new routines that are the c-grid substitute lsr, dynsolver
50         and ostres
51       + put a few fields that were local to dynsolver into global common
52         blocks, so that I can move the computation of stresses etc into
53         seaice_lsr (saves coding but may break the adjoint).
54     - replace more hardwired parameters by runtime parameters
55     - add ice masks that mask the rhs of the implicit solvers where there
56       is no ice (commented out in seaice_dynsolver, because i am not sure
57       if this works properly), eventually this should replace the clipping
58       of ice velocities in seaice_dynsolver to +/-40cm/s.
59    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
60      include it only where its needed
61    o move balancing of fluxes before the call of external_forcing_surf
62    o seaice:
63      - correct units of turning angles (now they are really in degrees)
64      - move computation of GWATX/Y out of main routine into dynsolver
65      - initialize GWATX/Y in seaice_init
66    o Apply mask on Fresh-Water flux (needed for SSH forcing).
67      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
68    o seaice: add runtime flags for turning angles (default to zero)
69    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
70      and trend from exf forcing and ctrl control adjustments
71    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
72      (since checkpoint57x_post)
73    o change the default rotation period to 86164.s = the Earth rotation
74    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
75      and based on a reference stratification. Tested within hs94.cs-32x32x5.
76    o seaice advection: add code for choosing between the default (2nd order
77      central differences) and multiDim advection schemes provided by
78      pkg/generic_advdiff
79    o seaice:
80      - removed all references to SEAICE_GRID.h fields from
81        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
82        (cubed-sphere configuration will change a little)
83      - grid computations in seaice_init are obsolete now.
84      - cleaned up code a little so that is easier to read (hopefully).
85      - added new (better?) discretizations of default advection and diffusion
86        (turn on with SEAICEuseFluxForm)
87      - replace 1 in 3d global fields by kSurface in growth.F
88      
89    checkpoint58a_post
90    o seaice:
91      - bug fix in advect.F
92    o shelfice:
93      - separate shelfice load anomaly from pload (breaks with time
94        dependent forcing), => introduce constant field shelficeLoadAnomaly.
95        Its default is 0., but it may be computed more cleverly from (unknown)
96        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
97        done offline. A good approximation of the pressure load anomaly is
98        necessary to avoid large initial adjustment processes underneath
99        deep-reaching shelfice.
100      - small fix in ISOMIP shelfice_thermodynamics
101      - add more sophisticated thermodynamics of Hellmer (1989), this is
102        now the default
103      - give a few constants more intuitive names
104    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
105      if bulk formulae are used in long integration (especially EmPmR). Turn
106      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
107      if balancePrintMean, the imbalance that is substracted is printed to
108      STDOUT.
109    o fix bug (typo) in obcs_apply_eta.F
110    o add a new package shelfice which enables us to model the circulation
111      underneath shelf-ice with draughts of hundreds of meters.
112     - works
113     - to do: + include improved thermodynamics
114              + check whether kSurfC (from model/inc/SURFACE.h) can be used
115                instead of new field kTopC
116              + can we use topoFile, Ro_surf and existing code in ini_depth.F
117                instead of new field R_shelfIce and new code in ini_depth.F
118                and ini_mask_etc.F?
119              + adjust vertical mixing schemes?
120    o seaice pkg:
121     - add a cpp-flag to include a simple formula for a salinity dependent
122       freezing point of sea water at the surface
123     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
124       meridional stresses are now different (and hopefully correct)
125    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
126       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
127       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
128    o pkg/diagnostics: add options and parameters for regional-statistics
129       diagnostics ; define regions by reading a region-mask from a file
130       (might add other options later)
131    o pkg/bulk_force:
132     - add option and parameters to use AIM surface-flux formulae.
133     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
134       others forcing fields (defined in PARM05, parameter file "data") are loaded
135       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
136     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
137     - use the right EXCH call for uwind,vwind (to work on CS-grid).
138     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
139       and parameters (note: calcWindStress replaces .NOT.readwindstress).
140     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
141    
142  checkpoint58  checkpoint58
143  o add "--embed-source" option to genmake2 which, when the supporting  o add "--embed-source" option to genmake2 which, when the supporting
144    tools can be compiled (as determined by genmake2) will turn on the    tools can be compiled (as determined by genmake2) will turn on the

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