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revision 1.595 by heimbach, Thu Dec 22 21:16:17 2005 UTC revision 1.643 by jmc, Thu Mar 30 20:59:21 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 move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
8      and add those terms in Vector-Invariant formulation.
9    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
10      if the control period (xx_hfluxperiod etc) is 0
11    o in profiles pkg, clean routines and fix details
12    o in ecco pkg, reading ssh data:
13      fix problem in case the model does not start at iter0=0
14    o fix mnc-pickup/restart for ptracers
15    o new package prifiles:
16      code to compute profile-based cost by Gael Forget
17      (modifs in ecco, ctrl, autodiff)
18    o Benign bug fix in initialization (spotted by M. Mazloff) of
19      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
20    
21    checkpoint58c_post
22    o adjoint: finish NLFS adjoint and provide reference output in
23      verification/global_ocean.90x40x15/results_ad_nlfs
24    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
25      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
26      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
27      with SEAICE_CGRID defined.
28    o move calendarDumps from "data" to "data.cal" and clean-up the code
29      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
30    o add useEXF & useCAL flags (for now, set in hard-coded way)
31    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
32      (were missing in NH mode, and wrong in quasihydrostatic mode).
33      waiting for Chris updated version of calc_gw to add those CALLs.
34    o fix bug in quasihydrostatic S/R ;
35      add a test for this option: global_ocean.90x40x15.qshyd
36    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
37      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
38    o add on/off flag useOffLine for package OFFLINE
39    o seaice:
40      - modify advection so that it works also on the C-grid
41      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
42        problem in multi-tile runs with C-grid
43      - add flags for clipping ice velocities and/or masking solver forcing
44      - fix drag (ocean on ice) formulation and a bug that caused noise in the
45        C-grid solver
46      - added a few comments to seaice_diffusion.F
47      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
48        are now exclusive)
49      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
50        required re-ordering the code a little:
51       + make DAIRN global variable (defined in SEAICE)
52       + move computation of the viscosities eta and zeta into a new separate
53         routine (because I need to recompute them in seaice_ocean_stress.F)
54    
55    checkpoint58b_post
56    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
57      update output.txt of exp. aim.5l_cs.thSI
58    o various mnc cleanups and improvements:
59      + shrink lookup tables by factor of ~4
60      + better error reporting when running out of lookup space
61      + able to handle longer path/file names (up to 500 chars)
62    o adjoint:
63      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
64      - TBD: "hidden" mom_vecinv recomp. in dynamics
65    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
66     (allow to differentiate between forcing components using new integer flags:
67      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
68     and add new flag to put Dissipation tendency out of Adams-Bashforth.
69    o ecco
70      - enable trend removal from SSH anomaly obs.
71    o adjoint
72      - a fix for PmEpR when #undef EXACT_CONSERV
73      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
74      - try to fix "hidden" recomp. in forward_step for NLFS
75        (NLFS seems broken sometimes after I checked it in)
76    o seaice:
77     - add c-grid version of the dynamic solver:
78       + three new routines that are the c-grid substitute lsr, dynsolver
79         and ostres
80       + put a few fields that were local to dynsolver into global common
81         blocks, so that I can move the computation of stresses etc into
82         seaice_lsr (saves coding but may break the adjoint).
83     - replace more hardwired parameters by runtime parameters
84     - add ice masks that mask the rhs of the implicit solvers where there
85       is no ice (commented out in seaice_dynsolver, because i am not sure
86       if this works properly), eventually this should replace the clipping
87       of ice velocities in seaice_dynsolver to +/-40cm/s.
88    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
89      include it only where its needed
90    o move balancing of fluxes before the call of external_forcing_surf
91    o seaice:
92      - correct units of turning angles (now they are really in degrees)
93      - move computation of GWATX/Y out of main routine into dynsolver
94      - initialize GWATX/Y in seaice_init
95    o Apply mask on Fresh-Water flux (needed for SSH forcing).
96      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
97    o seaice: add runtime flags for turning angles (default to zero)
98    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
99      and trend from exf forcing and ctrl control adjustments
100    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
101      (since checkpoint57x_post)
102    o change the default rotation period to 86164.s = the Earth rotation
103    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
104      and based on a reference stratification. Tested within hs94.cs-32x32x5.
105    o seaice advection: add code for choosing between the default (2nd order
106      central differences) and multiDim advection schemes provided by
107      pkg/generic_advdiff
108    o seaice:
109      - removed all references to SEAICE_GRID.h fields from
110        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
111        (cubed-sphere configuration will change a little)
112      - grid computations in seaice_init are obsolete now.
113      - cleaned up code a little so that is easier to read (hopefully).
114      - added new (better?) discretizations of default advection and diffusion
115        (turn on with SEAICEuseFluxForm)
116      - replace 1 in 3d global fields by kSurface in growth.F
117      
118    checkpoint58a_post
119    o seaice:
120      - bug fix in advect.F
121    o shelfice:
122      - separate shelfice load anomaly from pload (breaks with time
123        dependent forcing), => introduce constant field shelficeLoadAnomaly.
124        Its default is 0., but it may be computed more cleverly from (unknown)
125        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
126        done offline. A good approximation of the pressure load anomaly is
127        necessary to avoid large initial adjustment processes underneath
128        deep-reaching shelfice.
129      - small fix in ISOMIP shelfice_thermodynamics
130      - add more sophisticated thermodynamics of Hellmer (1989), this is
131        now the default
132      - give a few constants more intuitive names
133    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
134      if bulk formulae are used in long integration (especially EmPmR). Turn
135      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
136      if balancePrintMean, the imbalance that is substracted is printed to
137      STDOUT.
138    o fix bug (typo) in obcs_apply_eta.F
139    o add a new package shelfice which enables us to model the circulation
140      underneath shelf-ice with draughts of hundreds of meters.
141     - works
142     - to do: + include improved thermodynamics
143              + check whether kSurfC (from model/inc/SURFACE.h) can be used
144                instead of new field kTopC
145              + can we use topoFile, Ro_surf and existing code in ini_depth.F
146                instead of new field R_shelfIce and new code in ini_depth.F
147                and ini_mask_etc.F?
148              + adjust vertical mixing schemes?
149    o seaice pkg:
150     - add a cpp-flag to include a simple formula for a salinity dependent
151       freezing point of sea water at the surface
152     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
153       meridional stresses are now different (and hopefully correct)
154    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
155       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
156       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
157    o pkg/diagnostics: add options and parameters for regional-statistics
158       diagnostics ; define regions by reading a region-mask from a file
159       (might add other options later)
160    o pkg/bulk_force:
161     - add option and parameters to use AIM surface-flux formulae.
162     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
163       others forcing fields (defined in PARM05, parameter file "data") are loaded
164       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
165     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
166     - use the right EXCH call for uwind,vwind (to work on CS-grid).
167     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
168       and parameters (note: calcWindStress replaces .NOT.readwindstress).
169     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
170    
171    checkpoint58
172    o add "--embed-source" option to genmake2 which, when the supporting
173      tools can be compiled (as determined by genmake2) will turn on the
174      embed_files package which then embeds the entire MITgcm source code
175      (*.[fFhc] + Makefile) used for the build within the executable
176      - requested by CNH but off by default
177      - adds a paltry <9MB to the mitgcmuv executable in most cases
178      - only writes the output when useEMBEDSRC in eedata is true
179    o clean up 3-dim. relaxation codes:
180      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
181      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
182      * Thanks to Tom Haine for testing!
183    
184    checkpoint57z_post
185  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):
186    affects output (@ truncation level) of exp. plume_on_slope ; updated.    affects output (@ truncation level) of exp. plume_on_slope ; updated.
187  o fix the pickup behavior for obcs in combination with ptracers  o fix the pickup behavior for obcs in combination with ptracers

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