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revision 1.598 by edhill, Wed Jan 11 06:04:11 2006 UTC revision 1.635 by jmc, Mon Mar 20 14:49:24 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 add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
8      (were missing in NH mode, and wrong in quasihydrostatic mode).
9      waiting for Chris updated version of calc_gw to add those CALLs.
10    o fix bug in quasihydrostatic S/R ;
11      add a test for this option: global_ocean.90x40x15.qshyd
12    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
13      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
14    o add on/off flag useOffLine for package OFFLINE
15    o seaice:
16      - modify advection so that it works also on the C-grid
17      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
18        problem in multi-tile runs with C-grid
19      - add flags for clipping ice velocities and/or masking solver forcing
20      - fix drag (ocean on ice) formulation and a bug that caused noise in the
21        C-grid solver
22      - added a few comments to seaice_diffusion.F
23      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
24        are now exclusive)
25      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
26        required re-ordering the code a little:
27       + make DAIRN global variable (defined in SEAICE)
28       + move computation of the viscosities eta and zeta into a new separate
29         routine (because I need to recompute them in seaice_ocean_stress.F)
30    
31    checkpoint58b_post
32    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
33      update output.txt of exp. aim.5l_cs.thSI
34    o various mnc cleanups and improvements:
35      + shrink lookup tables by factor of ~4
36      + better error reporting when running out of lookup space
37      + able to handle longer path/file names (up to 500 chars)
38    o adjoint:
39      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
40      - TBD: "hidden" mom_vecinv recomp. in dynamics
41    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
42     (allow to differentiate between forcing components using new integer flags:
43      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
44     and add new flag to put Dissipation tendency out of Adams-Bashforth.
45    o ecco
46      - enable trend removal from SSH anomaly obs.
47    o adjoint
48      - a fix for PmEpR when #undef EXACT_CONSERV
49      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
50      - try to fix "hidden" recomp. in forward_step for NLFS
51        (NLFS seems broken sometimes after I checked it in)
52    o seaice:
53     - add c-grid version of the dynamic solver:
54       + three new routines that are the c-grid substitute lsr, dynsolver
55         and ostres
56       + put a few fields that were local to dynsolver into global common
57         blocks, so that I can move the computation of stresses etc into
58         seaice_lsr (saves coding but may break the adjoint).
59     - replace more hardwired parameters by runtime parameters
60     - add ice masks that mask the rhs of the implicit solvers where there
61       is no ice (commented out in seaice_dynsolver, because i am not sure
62       if this works properly), eventually this should replace the clipping
63       of ice velocities in seaice_dynsolver to +/-40cm/s.
64    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
65      include it only where its needed
66    o move balancing of fluxes before the call of external_forcing_surf
67    o seaice:
68      - correct units of turning angles (now they are really in degrees)
69      - move computation of GWATX/Y out of main routine into dynsolver
70      - initialize GWATX/Y in seaice_init
71    o Apply mask on Fresh-Water flux (needed for SSH forcing).
72      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
73    o seaice: add runtime flags for turning angles (default to zero)
74    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
75      and trend from exf forcing and ctrl control adjustments
76    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
77      (since checkpoint57x_post)
78    o change the default rotation period to 86164.s = the Earth rotation
79    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
80      and based on a reference stratification. Tested within hs94.cs-32x32x5.
81    o seaice advection: add code for choosing between the default (2nd order
82      central differences) and multiDim advection schemes provided by
83      pkg/generic_advdiff
84    o seaice:
85      - removed all references to SEAICE_GRID.h fields from
86        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
87        (cubed-sphere configuration will change a little)
88      - grid computations in seaice_init are obsolete now.
89      - cleaned up code a little so that is easier to read (hopefully).
90      - added new (better?) discretizations of default advection and diffusion
91        (turn on with SEAICEuseFluxForm)
92      - replace 1 in 3d global fields by kSurface in growth.F
93      
94    checkpoint58a_post
95    o seaice:
96      - bug fix in advect.F
97    o shelfice:
98      - separate shelfice load anomaly from pload (breaks with time
99        dependent forcing), => introduce constant field shelficeLoadAnomaly.
100        Its default is 0., but it may be computed more cleverly from (unknown)
101        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
102        done offline. A good approximation of the pressure load anomaly is
103        necessary to avoid large initial adjustment processes underneath
104        deep-reaching shelfice.
105      - small fix in ISOMIP shelfice_thermodynamics
106      - add more sophisticated thermodynamics of Hellmer (1989), this is
107        now the default
108      - give a few constants more intuitive names
109    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
110      if bulk formulae are used in long integration (especially EmPmR). Turn
111      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
112      if balancePrintMean, the imbalance that is substracted is printed to
113      STDOUT.
114    o fix bug (typo) in obcs_apply_eta.F
115    o add a new package shelfice which enables us to model the circulation
116      underneath shelf-ice with draughts of hundreds of meters.
117     - works
118     - to do: + include improved thermodynamics
119              + check whether kSurfC (from model/inc/SURFACE.h) can be used
120                instead of new field kTopC
121              + can we use topoFile, Ro_surf and existing code in ini_depth.F
122                instead of new field R_shelfIce and new code in ini_depth.F
123                and ini_mask_etc.F?
124              + adjust vertical mixing schemes?
125    o seaice pkg:
126     - add a cpp-flag to include a simple formula for a salinity dependent
127       freezing point of sea water at the surface
128     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
129       meridional stresses are now different (and hopefully correct)
130    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
131       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
132       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
133    o pkg/diagnostics: add options and parameters for regional-statistics
134       diagnostics ; define regions by reading a region-mask from a file
135       (might add other options later)
136    o pkg/bulk_force:
137     - add option and parameters to use AIM surface-flux formulae.
138     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
139       others forcing fields (defined in PARM05, parameter file "data") are loaded
140       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
141     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
142     - use the right EXCH call for uwind,vwind (to work on CS-grid).
143     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
144       and parameters (note: calcWindStress replaces .NOT.readwindstress).
145     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
146    
147    checkpoint58
148  o add "--embed-source" option to genmake2 which, when the supporting  o add "--embed-source" option to genmake2 which, when the supporting
149    tools can be compiled (as determined by genmake2) will turn on the    tools can be compiled (as determined by genmake2) will turn on the
150    embed_files package which then embeds the entire MITgcm source code    embed_files package which then embeds the entire MITgcm source code

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