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revision 1.596 by jmc, Sat Dec 31 01:21:41 2005 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
149      tools can be compiled (as determined by genmake2) will turn on the
150      embed_files package which then embeds the entire MITgcm source code
151      (*.[fFhc] + Makefile) used for the build within the executable
152      - requested by CNH but off by default
153      - adds a paltry <9MB to the mitgcmuv executable in most cases
154      - only writes the output when useEMBEDSRC in eedata is true
155    o clean up 3-dim. relaxation codes:
156      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
157      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
158      * Thanks to Tom Haine for testing!
159    
160  checkpoint57z_post  checkpoint57z_post
161  o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):  o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
162    affects output (@ truncation level) of exp. plume_on_slope ; updated.    affects output (@ truncation level) of exp. plume_on_slope ; updated.

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