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revision 1.594 by heimbach, Thu Dec 22 16:01:45 2005 UTC revision 1.642 by gforget, Wed Mar 29 22:11:08 2006 UTC
# Line 3  $Name$ Line 3  $Name$
3    
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
7      if the control period (xx_hfluxperiod etc) is 0
8    o in profiles pkg, clean routines and fix details
9    o in ecco pkg, reading ssh data:
10      fix problem in case the model does not start at iter0=0
11    o fix mnc-pickup/restart for ptracers
12    o new package prifiles:
13      code to compute profile-based cost by Gael Forget
14      (modifs in ecco, ctrl, autodiff)
15    o Benign bug fix in initialization (spotted by M. Mazloff) of
16      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
17    
18    checkpoint58c_post
19    o adjoint: finish NLFS adjoint and provide reference output in
20      verification/global_ocean.90x40x15/results_ad_nlfs
21    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
22      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
23      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
24      with SEAICE_CGRID defined.
25    o move calendarDumps from "data" to "data.cal" and clean-up the code
26      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
27    o add useEXF & useCAL flags (for now, set in hard-coded way)
28    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
29      (were missing in NH mode, and wrong in quasihydrostatic mode).
30      waiting for Chris updated version of calc_gw to add those CALLs.
31    o fix bug in quasihydrostatic S/R ;
32      add a test for this option: global_ocean.90x40x15.qshyd
33    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
34      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
35    o add on/off flag useOffLine for package OFFLINE
36    o seaice:
37      - modify advection so that it works also on the C-grid
38      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
39        problem in multi-tile runs with C-grid
40      - add flags for clipping ice velocities and/or masking solver forcing
41      - fix drag (ocean on ice) formulation and a bug that caused noise in the
42        C-grid solver
43      - added a few comments to seaice_diffusion.F
44      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
45        are now exclusive)
46      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
47        required re-ordering the code a little:
48       + make DAIRN global variable (defined in SEAICE)
49       + move computation of the viscosities eta and zeta into a new separate
50         routine (because I need to recompute them in seaice_ocean_stress.F)
51    
52    checkpoint58b_post
53    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
54      update output.txt of exp. aim.5l_cs.thSI
55    o various mnc cleanups and improvements:
56      + shrink lookup tables by factor of ~4
57      + better error reporting when running out of lookup space
58      + able to handle longer path/file names (up to 500 chars)
59    o adjoint:
60      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
61      - TBD: "hidden" mom_vecinv recomp. in dynamics
62    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
63     (allow to differentiate between forcing components using new integer flags:
64      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
65     and add new flag to put Dissipation tendency out of Adams-Bashforth.
66    o ecco
67      - enable trend removal from SSH anomaly obs.
68    o adjoint
69      - a fix for PmEpR when #undef EXACT_CONSERV
70      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
71      - try to fix "hidden" recomp. in forward_step for NLFS
72        (NLFS seems broken sometimes after I checked it in)
73    o seaice:
74     - add c-grid version of the dynamic solver:
75       + three new routines that are the c-grid substitute lsr, dynsolver
76         and ostres
77       + put a few fields that were local to dynsolver into global common
78         blocks, so that I can move the computation of stresses etc into
79         seaice_lsr (saves coding but may break the adjoint).
80     - replace more hardwired parameters by runtime parameters
81     - add ice masks that mask the rhs of the implicit solvers where there
82       is no ice (commented out in seaice_dynsolver, because i am not sure
83       if this works properly), eventually this should replace the clipping
84       of ice velocities in seaice_dynsolver to +/-40cm/s.
85    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
86      include it only where its needed
87    o move balancing of fluxes before the call of external_forcing_surf
88    o seaice:
89      - correct units of turning angles (now they are really in degrees)
90      - move computation of GWATX/Y out of main routine into dynsolver
91      - initialize GWATX/Y in seaice_init
92    o Apply mask on Fresh-Water flux (needed for SSH forcing).
93      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
94    o seaice: add runtime flags for turning angles (default to zero)
95    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
96      and trend from exf forcing and ctrl control adjustments
97    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
98      (since checkpoint57x_post)
99    o change the default rotation period to 86164.s = the Earth rotation
100    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
101      and based on a reference stratification. Tested within hs94.cs-32x32x5.
102    o seaice advection: add code for choosing between the default (2nd order
103      central differences) and multiDim advection schemes provided by
104      pkg/generic_advdiff
105    o seaice:
106      - removed all references to SEAICE_GRID.h fields from
107        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
108        (cubed-sphere configuration will change a little)
109      - grid computations in seaice_init are obsolete now.
110      - cleaned up code a little so that is easier to read (hopefully).
111      - added new (better?) discretizations of default advection and diffusion
112        (turn on with SEAICEuseFluxForm)
113      - replace 1 in 3d global fields by kSurface in growth.F
114      
115    checkpoint58a_post
116    o seaice:
117      - bug fix in advect.F
118    o shelfice:
119      - separate shelfice load anomaly from pload (breaks with time
120        dependent forcing), => introduce constant field shelficeLoadAnomaly.
121        Its default is 0., but it may be computed more cleverly from (unknown)
122        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
123        done offline. A good approximation of the pressure load anomaly is
124        necessary to avoid large initial adjustment processes underneath
125        deep-reaching shelfice.
126      - small fix in ISOMIP shelfice_thermodynamics
127      - add more sophisticated thermodynamics of Hellmer (1989), this is
128        now the default
129      - give a few constants more intuitive names
130    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
131      if bulk formulae are used in long integration (especially EmPmR). Turn
132      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
133      if balancePrintMean, the imbalance that is substracted is printed to
134      STDOUT.
135    o fix bug (typo) in obcs_apply_eta.F
136    o add a new package shelfice which enables us to model the circulation
137      underneath shelf-ice with draughts of hundreds of meters.
138     - works
139     - to do: + include improved thermodynamics
140              + check whether kSurfC (from model/inc/SURFACE.h) can be used
141                instead of new field kTopC
142              + can we use topoFile, Ro_surf and existing code in ini_depth.F
143                instead of new field R_shelfIce and new code in ini_depth.F
144                and ini_mask_etc.F?
145              + adjust vertical mixing schemes?
146    o seaice pkg:
147     - add a cpp-flag to include a simple formula for a salinity dependent
148       freezing point of sea water at the surface
149     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
150       meridional stresses are now different (and hopefully correct)
151    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
152       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
153       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
154    o pkg/diagnostics: add options and parameters for regional-statistics
155       diagnostics ; define regions by reading a region-mask from a file
156       (might add other options later)
157    o pkg/bulk_force:
158     - add option and parameters to use AIM surface-flux formulae.
159     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
160       others forcing fields (defined in PARM05, parameter file "data") are loaded
161       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
162     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
163     - use the right EXCH call for uwind,vwind (to work on CS-grid).
164     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
165       and parameters (note: calcWindStress replaces .NOT.readwindstress).
166     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
167    
168    checkpoint58
169    o add "--embed-source" option to genmake2 which, when the supporting
170      tools can be compiled (as determined by genmake2) will turn on the
171      embed_files package which then embeds the entire MITgcm source code
172      (*.[fFhc] + Makefile) used for the build within the executable
173      - requested by CNH but off by default
174      - adds a paltry <9MB to the mitgcmuv executable in most cases
175      - only writes the output when useEMBEDSRC in eedata is true
176    o clean up 3-dim. relaxation codes:
177      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
178      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
179      * Thanks to Tom Haine for testing!
180    
181    checkpoint57z_post
182  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):
183    affects output (@ truncation level) of exp. plume_on_slope ; updated.    affects output (@ truncation level) of exp. plume_on_slope ; updated.
184  o fix the pickup behavior for obcs in combination with ptracers  o fix the pickup behavior for obcs in combination with ptracers
# Line 26  o completing 3-dim. relaxation code: add Line 201  o completing 3-dim. relaxation code: add
201        1) Use a constant-in-time 3-dim. field        1) Use a constant-in-time 3-dim. field
202        2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.        2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
203        3) Real-time relax. to time-evolving prescribed field        3) Real-time relax. to time-evolving prescribed field
204  o Adding Laplacian-type smoothness constraint on forcing controls  o Adding Laplacian-type smoothness constraint on
205    * enable at compile-time via ALLOW_SMOOTH_BOUNDARY_CTRL_COST    initial and boundary (forcing) controls (ic, bc)
206    * enable at run-time via mult_smooth = 1    * enable at compile-time via
207        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
208      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
209    * Absolute scale somewhat unclear so far    * Absolute scale somewhat unclear so far
210    * no area weighting was included since no other cost term does so far    * no area weighting was included since no other cost term does so far
211    

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