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revision 1.571 by jmc, Thu Oct 13 01:28:24 2005 UTC revision 1.640 by mlosch, Fri Mar 24 11:43:19 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 fix mnc-pickup/restart for ptracers
8    o new code to compute profile cost
9      by Gael Forget
10      (modifs in ecco, ctrl, autodiff)
11    
12    checkpoint58c_post
13    o adjoint: finish NLFS adjoint and provide reference output in
14      verification/global_ocean.90x40x15/results_ad_nlfs
15    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
16      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
17      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
18      with SEAICE_CGRID defined.
19    o move calendarDumps from "data" to "data.cal" and clean-up the code
20      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
21    o add useEXF & useCAL flags (for now, set in hard-coded way)
22    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
23      (were missing in NH mode, and wrong in quasihydrostatic mode).
24      waiting for Chris updated version of calc_gw to add those CALLs.
25    o fix bug in quasihydrostatic S/R ;
26      add a test for this option: global_ocean.90x40x15.qshyd
27    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
28      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
29    o add on/off flag useOffLine for package OFFLINE
30    o seaice:
31      - modify advection so that it works also on the C-grid
32      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
33        problem in multi-tile runs with C-grid
34      - add flags for clipping ice velocities and/or masking solver forcing
35      - fix drag (ocean on ice) formulation and a bug that caused noise in the
36        C-grid solver
37      - added a few comments to seaice_diffusion.F
38      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
39        are now exclusive)
40      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
41        required re-ordering the code a little:
42       + make DAIRN global variable (defined in SEAICE)
43       + move computation of the viscosities eta and zeta into a new separate
44         routine (because I need to recompute them in seaice_ocean_stress.F)
45    
46    checkpoint58b_post
47    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
48      update output.txt of exp. aim.5l_cs.thSI
49    o various mnc cleanups and improvements:
50      + shrink lookup tables by factor of ~4
51      + better error reporting when running out of lookup space
52      + able to handle longer path/file names (up to 500 chars)
53    o adjoint:
54      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
55      - TBD: "hidden" mom_vecinv recomp. in dynamics
56    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
57     (allow to differentiate between forcing components using new integer flags:
58      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
59     and add new flag to put Dissipation tendency out of Adams-Bashforth.
60    o ecco
61      - enable trend removal from SSH anomaly obs.
62    o adjoint
63      - a fix for PmEpR when #undef EXACT_CONSERV
64      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
65      - try to fix "hidden" recomp. in forward_step for NLFS
66        (NLFS seems broken sometimes after I checked it in)
67    o seaice:
68     - add c-grid version of the dynamic solver:
69       + three new routines that are the c-grid substitute lsr, dynsolver
70         and ostres
71       + put a few fields that were local to dynsolver into global common
72         blocks, so that I can move the computation of stresses etc into
73         seaice_lsr (saves coding but may break the adjoint).
74     - replace more hardwired parameters by runtime parameters
75     - add ice masks that mask the rhs of the implicit solvers where there
76       is no ice (commented out in seaice_dynsolver, because i am not sure
77       if this works properly), eventually this should replace the clipping
78       of ice velocities in seaice_dynsolver to +/-40cm/s.
79    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
80      include it only where its needed
81    o move balancing of fluxes before the call of external_forcing_surf
82    o seaice:
83      - correct units of turning angles (now they are really in degrees)
84      - move computation of GWATX/Y out of main routine into dynsolver
85      - initialize GWATX/Y in seaice_init
86    o Apply mask on Fresh-Water flux (needed for SSH forcing).
87      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
88    o seaice: add runtime flags for turning angles (default to zero)
89    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
90      and trend from exf forcing and ctrl control adjustments
91    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
92      (since checkpoint57x_post)
93    o change the default rotation period to 86164.s = the Earth rotation
94    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
95      and based on a reference stratification. Tested within hs94.cs-32x32x5.
96    o seaice advection: add code for choosing between the default (2nd order
97      central differences) and multiDim advection schemes provided by
98      pkg/generic_advdiff
99    o seaice:
100      - removed all references to SEAICE_GRID.h fields from
101        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
102        (cubed-sphere configuration will change a little)
103      - grid computations in seaice_init are obsolete now.
104      - cleaned up code a little so that is easier to read (hopefully).
105      - added new (better?) discretizations of default advection and diffusion
106        (turn on with SEAICEuseFluxForm)
107      - replace 1 in 3d global fields by kSurface in growth.F
108      
109    checkpoint58a_post
110    o seaice:
111      - bug fix in advect.F
112    o shelfice:
113      - separate shelfice load anomaly from pload (breaks with time
114        dependent forcing), => introduce constant field shelficeLoadAnomaly.
115        Its default is 0., but it may be computed more cleverly from (unknown)
116        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
117        done offline. A good approximation of the pressure load anomaly is
118        necessary to avoid large initial adjustment processes underneath
119        deep-reaching shelfice.
120      - small fix in ISOMIP shelfice_thermodynamics
121      - add more sophisticated thermodynamics of Hellmer (1989), this is
122        now the default
123      - give a few constants more intuitive names
124    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
125      if bulk formulae are used in long integration (especially EmPmR). Turn
126      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
127      if balancePrintMean, the imbalance that is substracted is printed to
128      STDOUT.
129    o fix bug (typo) in obcs_apply_eta.F
130    o add a new package shelfice which enables us to model the circulation
131      underneath shelf-ice with draughts of hundreds of meters.
132     - works
133     - to do: + include improved thermodynamics
134              + check whether kSurfC (from model/inc/SURFACE.h) can be used
135                instead of new field kTopC
136              + can we use topoFile, Ro_surf and existing code in ini_depth.F
137                instead of new field R_shelfIce and new code in ini_depth.F
138                and ini_mask_etc.F?
139              + adjust vertical mixing schemes?
140    o seaice pkg:
141     - add a cpp-flag to include a simple formula for a salinity dependent
142       freezing point of sea water at the surface
143     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
144       meridional stresses are now different (and hopefully correct)
145    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
146       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
147       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
148    o pkg/diagnostics: add options and parameters for regional-statistics
149       diagnostics ; define regions by reading a region-mask from a file
150       (might add other options later)
151    o pkg/bulk_force:
152     - add option and parameters to use AIM surface-flux formulae.
153     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
154       others forcing fields (defined in PARM05, parameter file "data") are loaded
155       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
156     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
157     - use the right EXCH call for uwind,vwind (to work on CS-grid).
158     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
159       and parameters (note: calcWindStress replaces .NOT.readwindstress).
160     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
161    
162    checkpoint58
163    o add "--embed-source" option to genmake2 which, when the supporting
164      tools can be compiled (as determined by genmake2) will turn on the
165      embed_files package which then embeds the entire MITgcm source code
166      (*.[fFhc] + Makefile) used for the build within the executable
167      - requested by CNH but off by default
168      - adds a paltry <9MB to the mitgcmuv executable in most cases
169      - only writes the output when useEMBEDSRC in eedata is true
170    o clean up 3-dim. relaxation codes:
171      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
172      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
173      * Thanks to Tom Haine for testing!
174    
175    checkpoint57z_post
176    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
177      affects output (@ truncation level) of exp. plume_on_slope ; updated.
178    o fix the pickup behavior for obcs in combination with ptracers
179    o fix a bug in ptracers_external_fields_load
180    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
181      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
182    o transfered surface NH pressure to eta field (if exactConserv).
183    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
184         and update lab_sea output.txt file.
185    o completing 3-dim. relaxation code: additional term
186         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
187      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
188      * At compile time, in "EXF_OPTIONS.h" set
189          #define  ALLOW_CLIMTEMP_RELAXATION
190          #define  ALLOW_CLIMSALT_RELAXATION
191      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
192          tauThetaClimRelax3Dim = 15552000.0,
193          tauSaltClimRelax3Dim  = 15552000.0,
194      * 3 cases:
195          1) Use a constant-in-time 3-dim. field
196          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
197          3) Real-time relax. to time-evolving prescribed field
198    o Adding Laplacian-type smoothness constraint on
199      initial and boundary (forcing) controls (ic, bc)
200      * enable at compile-time via
201        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
202      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
203      * Absolute scale somewhat unclear so far
204      * no area weighting was included since no other cost term does so far
205    
206    checkpoint57y_post
207    First step for a NLFS adjoint
208    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
209    o new init. routines for calc_r_star, calc_surf_dr
210    o still need to deal with ini_masks_etc
211    o testreport seemed happy
212    checkpoint57y_pre
213    
214    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
215    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
216    o add new offset feature to offline pkg (plus minor cleanup)
217    o cfc fixes for final year of integration
218    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
219      be in GCHEM_OPTIONS).
220    
221    checkpoint57x_post
222    o fix testreport Pb in multiple test experiment.
223    o cleanup our namelist syntax in verification:
224      - make it more F95 standards compliant (some work still needed)
225      - allows the vast majority of our tests to work with gfortran
226    o Non-Hydrostatic:
227     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
228     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
229    o Allow to apply AB on T,S rather than on AB(gT,gS):
230     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
231     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
232       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
233     - need a "clever" read_pickup to restart from the other AB formulation
234    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
235    o remove some unused variables (reduces number of compiler warnings)
236    o adjoint
237      * Disable useVariableViscosity for adjoint for time being
238        (there are a number of extensive recomputations)
239      * Initialize certain variables needed for adjoint
240    
241    checkpoint57w_post
242    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
243                 fix the singleCpuIO RS version of MDSWRITEFIELD
244       and add a WARNING if using globalFiles=T with multi-processors.
245    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
246      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
247    o tracer advection scheme:
248      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
249       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
250       was not very convenient).
251      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
252       (further tests needed for the implicit DST & Flux-Limiter schemes).
253    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
254      and sRef for convenience, handy, when you want to initialize
255      ptracers in a large domain with a constant non-zero value. Also,
256      untangle ptracers_init.F a little.
257    
258    checkpoint57v_post
259    o change dome exp. to use variable viscosity in side-drag terms.
260  o remove all the files from the cfc_offline test since they are now  o remove all the files from the cfc_offline test since they are now
261    incorporated into tutorial_cfc_offline which has been producing    incorporated into tutorial_cfc_offline which has been producing
262    identical results for a few days of testing    identical results for a few days of testing
# Line 15  o add new parameter: sideDragFactor to e Line 268  o add new parameter: sideDragFactor to e
268  o vorticity & strain are now computed without masking, to account for  o vorticity & strain are now computed without masking, to account for
269    no-slip-side BC in variable viscosity calculation ; mask is applied    no-slip-side BC in variable viscosity calculation ; mask is applied
270    anyway later on, before computing advection/coriolis terms.    anyway later on, before computing advection/coriolis terms.
271  o modify exp4 to test new obcs support reading from external files  o modify exp4 to test new obcs support for reading from external files
272    and for passive tracers    and for passive tracers
273  o fix behavior of ptracers_monitor when monitor output is written to a  o fix behavior of ptracers_monitor when monitor output is written to a
274    netcdf-file; still not independent of monitor.F (writes in the same    netcdf-file; still not independent of monitor.F (writes in the same

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