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revision 1.591 by jmc, Tue Dec 13 23:29:25 2005 UTC revision 1.636 by jmc, Mon Mar 20 21:54:37 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 no AB-2 at the first iteration for Gw (consistant with Gu,Gv,Gt,Gs ...)  o move calendarDumps from "data" to "data.cal" and clean-up the code
8    affect results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)    with a simple call to pkg/cal S/R: CAL_TIME2WRITE
9  o transfert surface NH pressure to eta field (if exactConserv).  o add useEXF & useCAL flags (for now, set in hard-coded way)
10    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
11      (were missing in NH mode, and wrong in quasihydrostatic mode).
12      waiting for Chris updated version of calc_gw to add those CALLs.
13    o fix bug in quasihydrostatic S/R ;
14      add a test for this option: global_ocean.90x40x15.qshyd
15    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
16      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
17    o add on/off flag useOffLine for package OFFLINE
18    o seaice:
19      - modify advection so that it works also on the C-grid
20      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
21        problem in multi-tile runs with C-grid
22      - add flags for clipping ice velocities and/or masking solver forcing
23      - fix drag (ocean on ice) formulation and a bug that caused noise in the
24        C-grid solver
25      - added a few comments to seaice_diffusion.F
26      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
27        are now exclusive)
28      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
29        required re-ordering the code a little:
30       + make DAIRN global variable (defined in SEAICE)
31       + move computation of the viscosities eta and zeta into a new separate
32         routine (because I need to recompute them in seaice_ocean_stress.F)
33    
34    checkpoint58b_post
35    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
36      update output.txt of exp. aim.5l_cs.thSI
37    o various mnc cleanups and improvements:
38      + shrink lookup tables by factor of ~4
39      + better error reporting when running out of lookup space
40      + able to handle longer path/file names (up to 500 chars)
41    o adjoint:
42      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
43      - TBD: "hidden" mom_vecinv recomp. in dynamics
44    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
45     (allow to differentiate between forcing components using new integer flags:
46      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
47     and add new flag to put Dissipation tendency out of Adams-Bashforth.
48    o ecco
49      - enable trend removal from SSH anomaly obs.
50    o adjoint
51      - a fix for PmEpR when #undef EXACT_CONSERV
52      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
53      - try to fix "hidden" recomp. in forward_step for NLFS
54        (NLFS seems broken sometimes after I checked it in)
55    o seaice:
56     - add c-grid version of the dynamic solver:
57       + three new routines that are the c-grid substitute lsr, dynsolver
58         and ostres
59       + put a few fields that were local to dynsolver into global common
60         blocks, so that I can move the computation of stresses etc into
61         seaice_lsr (saves coding but may break the adjoint).
62     - replace more hardwired parameters by runtime parameters
63     - add ice masks that mask the rhs of the implicit solvers where there
64       is no ice (commented out in seaice_dynsolver, because i am not sure
65       if this works properly), eventually this should replace the clipping
66       of ice velocities in seaice_dynsolver to +/-40cm/s.
67    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
68      include it only where its needed
69    o move balancing of fluxes before the call of external_forcing_surf
70    o seaice:
71      - correct units of turning angles (now they are really in degrees)
72      - move computation of GWATX/Y out of main routine into dynsolver
73      - initialize GWATX/Y in seaice_init
74    o Apply mask on Fresh-Water flux (needed for SSH forcing).
75      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
76    o seaice: add runtime flags for turning angles (default to zero)
77    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
78      and trend from exf forcing and ctrl control adjustments
79    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
80      (since checkpoint57x_post)
81    o change the default rotation period to 86164.s = the Earth rotation
82    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
83      and based on a reference stratification. Tested within hs94.cs-32x32x5.
84    o seaice advection: add code for choosing between the default (2nd order
85      central differences) and multiDim advection schemes provided by
86      pkg/generic_advdiff
87    o seaice:
88      - removed all references to SEAICE_GRID.h fields from
89        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
90        (cubed-sphere configuration will change a little)
91      - grid computations in seaice_init are obsolete now.
92      - cleaned up code a little so that is easier to read (hopefully).
93      - added new (better?) discretizations of default advection and diffusion
94        (turn on with SEAICEuseFluxForm)
95      - replace 1 in 3d global fields by kSurface in growth.F
96      
97    checkpoint58a_post
98    o seaice:
99      - bug fix in advect.F
100    o shelfice:
101      - separate shelfice load anomaly from pload (breaks with time
102        dependent forcing), => introduce constant field shelficeLoadAnomaly.
103        Its default is 0., but it may be computed more cleverly from (unknown)
104        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
105        done offline. A good approximation of the pressure load anomaly is
106        necessary to avoid large initial adjustment processes underneath
107        deep-reaching shelfice.
108      - small fix in ISOMIP shelfice_thermodynamics
109      - add more sophisticated thermodynamics of Hellmer (1989), this is
110        now the default
111      - give a few constants more intuitive names
112    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
113      if bulk formulae are used in long integration (especially EmPmR). Turn
114      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
115      if balancePrintMean, the imbalance that is substracted is printed to
116      STDOUT.
117    o fix bug (typo) in obcs_apply_eta.F
118    o add a new package shelfice which enables us to model the circulation
119      underneath shelf-ice with draughts of hundreds of meters.
120     - works
121     - to do: + include improved thermodynamics
122              + check whether kSurfC (from model/inc/SURFACE.h) can be used
123                instead of new field kTopC
124              + can we use topoFile, Ro_surf and existing code in ini_depth.F
125                instead of new field R_shelfIce and new code in ini_depth.F
126                and ini_mask_etc.F?
127              + adjust vertical mixing schemes?
128    o seaice pkg:
129     - add a cpp-flag to include a simple formula for a salinity dependent
130       freezing point of sea water at the surface
131     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
132       meridional stresses are now different (and hopefully correct)
133    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
134       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
135       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
136    o pkg/diagnostics: add options and parameters for regional-statistics
137       diagnostics ; define regions by reading a region-mask from a file
138       (might add other options later)
139    o pkg/bulk_force:
140     - add option and parameters to use AIM surface-flux formulae.
141     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
142       others forcing fields (defined in PARM05, parameter file "data") are loaded
143       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
144     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
145     - use the right EXCH call for uwind,vwind (to work on CS-grid).
146     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
147       and parameters (note: calcWindStress replaces .NOT.readwindstress).
148     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
149    
150    checkpoint58
151    o add "--embed-source" option to genmake2 which, when the supporting
152      tools can be compiled (as determined by genmake2) will turn on the
153      embed_files package which then embeds the entire MITgcm source code
154      (*.[fFhc] + Makefile) used for the build within the executable
155      - requested by CNH but off by default
156      - adds a paltry <9MB to the mitgcmuv executable in most cases
157      - only writes the output when useEMBEDSRC in eedata is true
158    o clean up 3-dim. relaxation codes:
159      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
160      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
161      * Thanks to Tom Haine for testing!
162    
163    checkpoint57z_post
164    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
165      affects output (@ truncation level) of exp. plume_on_slope ; updated.
166    o fix the pickup behavior for obcs in combination with ptracers
167    o fix a bug in ptracers_external_fields_load
168    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
169      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
170    o transfered surface NH pressure to eta field (if exactConserv).
171  o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)  o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
172       and update lab_sea output.txt file.       and update lab_sea output.txt file.
173  o completing 3-dim. relaxation code: additional term  o completing 3-dim. relaxation code: additional term
# Line 22  o completing 3-dim. relaxation code: add Line 183  o completing 3-dim. relaxation code: add
183        1) Use a constant-in-time 3-dim. field        1) Use a constant-in-time 3-dim. field
184        2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.        2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
185        3) Real-time relax. to time-evolving prescribed field        3) Real-time relax. to time-evolving prescribed field
186    o Adding Laplacian-type smoothness constraint on
187      initial and boundary (forcing) controls (ic, bc)
188      * enable at compile-time via
189        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
190      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
191      * Absolute scale somewhat unclear so far
192      * no area weighting was included since no other cost term does so far
193    
194  checkpoint57y_post  checkpoint57y_post
195  First step for a NLFS adjoint  First step for a NLFS adjoint

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