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revision 1.570 by edhill, Wed Oct 12 16:08:16 2005 UTC revision 1.641 by heimbach, Fri Mar 24 23:01:39 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 package prifiles:
9      code to compute profile-based cost by Gael Forget
10      (modifs in ecco, ctrl, autodiff)
11    o Benign bug fix in initialization (spotted by M. Mazloff) of
12      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
13    
14    checkpoint58c_post
15    o adjoint: finish NLFS adjoint and provide reference output in
16      verification/global_ocean.90x40x15/results_ad_nlfs
17    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
18      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
19      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
20      with SEAICE_CGRID defined.
21    o move calendarDumps from "data" to "data.cal" and clean-up the code
22      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
23    o add useEXF & useCAL flags (for now, set in hard-coded way)
24    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
25      (were missing in NH mode, and wrong in quasihydrostatic mode).
26      waiting for Chris updated version of calc_gw to add those CALLs.
27    o fix bug in quasihydrostatic S/R ;
28      add a test for this option: global_ocean.90x40x15.qshyd
29    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
30      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
31    o add on/off flag useOffLine for package OFFLINE
32    o seaice:
33      - modify advection so that it works also on the C-grid
34      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
35        problem in multi-tile runs with C-grid
36      - add flags for clipping ice velocities and/or masking solver forcing
37      - fix drag (ocean on ice) formulation and a bug that caused noise in the
38        C-grid solver
39      - added a few comments to seaice_diffusion.F
40      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
41        are now exclusive)
42      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
43        required re-ordering the code a little:
44       + make DAIRN global variable (defined in SEAICE)
45       + move computation of the viscosities eta and zeta into a new separate
46         routine (because I need to recompute them in seaice_ocean_stress.F)
47    
48    checkpoint58b_post
49    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
50      update output.txt of exp. aim.5l_cs.thSI
51    o various mnc cleanups and improvements:
52      + shrink lookup tables by factor of ~4
53      + better error reporting when running out of lookup space
54      + able to handle longer path/file names (up to 500 chars)
55    o adjoint:
56      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
57      - TBD: "hidden" mom_vecinv recomp. in dynamics
58    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
59     (allow to differentiate between forcing components using new integer flags:
60      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
61     and add new flag to put Dissipation tendency out of Adams-Bashforth.
62    o ecco
63      - enable trend removal from SSH anomaly obs.
64    o adjoint
65      - a fix for PmEpR when #undef EXACT_CONSERV
66      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
67      - try to fix "hidden" recomp. in forward_step for NLFS
68        (NLFS seems broken sometimes after I checked it in)
69    o seaice:
70     - add c-grid version of the dynamic solver:
71       + three new routines that are the c-grid substitute lsr, dynsolver
72         and ostres
73       + put a few fields that were local to dynsolver into global common
74         blocks, so that I can move the computation of stresses etc into
75         seaice_lsr (saves coding but may break the adjoint).
76     - replace more hardwired parameters by runtime parameters
77     - add ice masks that mask the rhs of the implicit solvers where there
78       is no ice (commented out in seaice_dynsolver, because i am not sure
79       if this works properly), eventually this should replace the clipping
80       of ice velocities in seaice_dynsolver to +/-40cm/s.
81    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
82      include it only where its needed
83    o move balancing of fluxes before the call of external_forcing_surf
84    o seaice:
85      - correct units of turning angles (now they are really in degrees)
86      - move computation of GWATX/Y out of main routine into dynsolver
87      - initialize GWATX/Y in seaice_init
88    o Apply mask on Fresh-Water flux (needed for SSH forcing).
89      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
90    o seaice: add runtime flags for turning angles (default to zero)
91    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
92      and trend from exf forcing and ctrl control adjustments
93    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
94      (since checkpoint57x_post)
95    o change the default rotation period to 86164.s = the Earth rotation
96    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
97      and based on a reference stratification. Tested within hs94.cs-32x32x5.
98    o seaice advection: add code for choosing between the default (2nd order
99      central differences) and multiDim advection schemes provided by
100      pkg/generic_advdiff
101    o seaice:
102      - removed all references to SEAICE_GRID.h fields from
103        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
104        (cubed-sphere configuration will change a little)
105      - grid computations in seaice_init are obsolete now.
106      - cleaned up code a little so that is easier to read (hopefully).
107      - added new (better?) discretizations of default advection and diffusion
108        (turn on with SEAICEuseFluxForm)
109      - replace 1 in 3d global fields by kSurface in growth.F
110      
111    checkpoint58a_post
112    o seaice:
113      - bug fix in advect.F
114    o shelfice:
115      - separate shelfice load anomaly from pload (breaks with time
116        dependent forcing), => introduce constant field shelficeLoadAnomaly.
117        Its default is 0., but it may be computed more cleverly from (unknown)
118        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
119        done offline. A good approximation of the pressure load anomaly is
120        necessary to avoid large initial adjustment processes underneath
121        deep-reaching shelfice.
122      - small fix in ISOMIP shelfice_thermodynamics
123      - add more sophisticated thermodynamics of Hellmer (1989), this is
124        now the default
125      - give a few constants more intuitive names
126    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
127      if bulk formulae are used in long integration (especially EmPmR). Turn
128      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
129      if balancePrintMean, the imbalance that is substracted is printed to
130      STDOUT.
131    o fix bug (typo) in obcs_apply_eta.F
132    o add a new package shelfice which enables us to model the circulation
133      underneath shelf-ice with draughts of hundreds of meters.
134     - works
135     - to do: + include improved thermodynamics
136              + check whether kSurfC (from model/inc/SURFACE.h) can be used
137                instead of new field kTopC
138              + can we use topoFile, Ro_surf and existing code in ini_depth.F
139                instead of new field R_shelfIce and new code in ini_depth.F
140                and ini_mask_etc.F?
141              + adjust vertical mixing schemes?
142    o seaice pkg:
143     - add a cpp-flag to include a simple formula for a salinity dependent
144       freezing point of sea water at the surface
145     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
146       meridional stresses are now different (and hopefully correct)
147    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
148       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
149       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
150    o pkg/diagnostics: add options and parameters for regional-statistics
151       diagnostics ; define regions by reading a region-mask from a file
152       (might add other options later)
153    o pkg/bulk_force:
154     - add option and parameters to use AIM surface-flux formulae.
155     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
156       others forcing fields (defined in PARM05, parameter file "data") are loaded
157       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
158     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
159     - use the right EXCH call for uwind,vwind (to work on CS-grid).
160     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
161       and parameters (note: calcWindStress replaces .NOT.readwindstress).
162     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
163    
164    checkpoint58
165    o add "--embed-source" option to genmake2 which, when the supporting
166      tools can be compiled (as determined by genmake2) will turn on the
167      embed_files package which then embeds the entire MITgcm source code
168      (*.[fFhc] + Makefile) used for the build within the executable
169      - requested by CNH but off by default
170      - adds a paltry <9MB to the mitgcmuv executable in most cases
171      - only writes the output when useEMBEDSRC in eedata is true
172    o clean up 3-dim. relaxation codes:
173      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
174      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
175      * Thanks to Tom Haine for testing!
176    
177    checkpoint57z_post
178    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
179      affects output (@ truncation level) of exp. plume_on_slope ; updated.
180    o fix the pickup behavior for obcs in combination with ptracers
181    o fix a bug in ptracers_external_fields_load
182    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
183      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
184    o transfered surface NH pressure to eta field (if exactConserv).
185    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
186         and update lab_sea output.txt file.
187    o completing 3-dim. relaxation code: additional term
188         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
189      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
190      * At compile time, in "EXF_OPTIONS.h" set
191          #define  ALLOW_CLIMTEMP_RELAXATION
192          #define  ALLOW_CLIMSALT_RELAXATION
193      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
194          tauThetaClimRelax3Dim = 15552000.0,
195          tauSaltClimRelax3Dim  = 15552000.0,
196      * 3 cases:
197          1) Use a constant-in-time 3-dim. field
198          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
199          3) Real-time relax. to time-evolving prescribed field
200    o Adding Laplacian-type smoothness constraint on
201      initial and boundary (forcing) controls (ic, bc)
202      * enable at compile-time via
203        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
204      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
205      * Absolute scale somewhat unclear so far
206      * no area weighting was included since no other cost term does so far
207    
208    checkpoint57y_post
209    First step for a NLFS adjoint
210    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
211    o new init. routines for calc_r_star, calc_surf_dr
212    o still need to deal with ini_masks_etc
213    o testreport seemed happy
214    checkpoint57y_pre
215    
216    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
217    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
218    o add new offset feature to offline pkg (plus minor cleanup)
219    o cfc fixes for final year of integration
220    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
221      be in GCHEM_OPTIONS).
222    
223    checkpoint57x_post
224    o fix testreport Pb in multiple test experiment.
225    o cleanup our namelist syntax in verification:
226      - make it more F95 standards compliant (some work still needed)
227      - allows the vast majority of our tests to work with gfortran
228    o Non-Hydrostatic:
229     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
230     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
231    o Allow to apply AB on T,S rather than on AB(gT,gS):
232     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
233     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
234       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
235     - need a "clever" read_pickup to restart from the other AB formulation
236    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
237    o remove some unused variables (reduces number of compiler warnings)
238    o adjoint
239      * Disable useVariableViscosity for adjoint for time being
240        (there are a number of extensive recomputations)
241      * Initialize certain variables needed for adjoint
242    
243    checkpoint57w_post
244    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
245                 fix the singleCpuIO RS version of MDSWRITEFIELD
246       and add a WARNING if using globalFiles=T with multi-processors.
247    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
248      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
249    o tracer advection scheme:
250      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
251       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
252       was not very convenient).
253      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
254       (further tests needed for the implicit DST & Flux-Limiter schemes).
255    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
256      and sRef for convenience, handy, when you want to initialize
257      ptracers in a large domain with a constant non-zero value. Also,
258      untangle ptracers_init.F a little.
259    
260    checkpoint57v_post
261    o change dome exp. to use variable viscosity in side-drag terms.
262  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
263    incorporated into tutorial_cfc_offline which has been producing    incorporated into tutorial_cfc_offline which has been producing
264    identical results for a few days of testing    identical results for a few days of testing
265    o add new parameter: sideDragFactor to enable half-slip-side BC
266      and change side-drag S/R to use viscosity from mom_calc_visc
267      (can switch back by setting sideDragFactor=0.); affects results at
268      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
269       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
270  o vorticity & strain are now computed without masking, to account for  o vorticity & strain are now computed without masking, to account for
271    no-slip-side BC in variable viscosity calculation ; mask is applied    no-slip-side BC in variable viscosity calculation ; mask is applied
272    anyway later on, before computing advection/coriolis terms.    anyway later on, before computing advection/coriolis terms.
273  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
274    and for passive tracers    and for passive tracers
275  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
276    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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