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revision 1.570 by edhill, Wed Oct 12 16:08:16 2005 UTC revision 1.638 by heimbach, Thu Mar 23 19:59:59 2006 UTC
# Line 4  $Name$ Line 4  $Name$
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    checkpoint58c_post
8    o adjoint: finish NLFS adjoint and provide reference output in
9      verification/global_ocean.90x40x15/results_ad_nlfs
10    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
11      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
12      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
13      with SEAICE_CGRID defined.
14    o move calendarDumps from "data" to "data.cal" and clean-up the code
15      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
16    o add useEXF & useCAL flags (for now, set in hard-coded way)
17    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
18      (were missing in NH mode, and wrong in quasihydrostatic mode).
19      waiting for Chris updated version of calc_gw to add those CALLs.
20    o fix bug in quasihydrostatic S/R ;
21      add a test for this option: global_ocean.90x40x15.qshyd
22    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
23      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
24    o add on/off flag useOffLine for package OFFLINE
25    o seaice:
26      - modify advection so that it works also on the C-grid
27      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
28        problem in multi-tile runs with C-grid
29      - add flags for clipping ice velocities and/or masking solver forcing
30      - fix drag (ocean on ice) formulation and a bug that caused noise in the
31        C-grid solver
32      - added a few comments to seaice_diffusion.F
33      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
34        are now exclusive)
35      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
36        required re-ordering the code a little:
37       + make DAIRN global variable (defined in SEAICE)
38       + move computation of the viscosities eta and zeta into a new separate
39         routine (because I need to recompute them in seaice_ocean_stress.F)
40    
41    checkpoint58b_post
42    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
43      update output.txt of exp. aim.5l_cs.thSI
44    o various mnc cleanups and improvements:
45      + shrink lookup tables by factor of ~4
46      + better error reporting when running out of lookup space
47      + able to handle longer path/file names (up to 500 chars)
48    o adjoint:
49      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
50      - TBD: "hidden" mom_vecinv recomp. in dynamics
51    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
52     (allow to differentiate between forcing components using new integer flags:
53      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
54     and add new flag to put Dissipation tendency out of Adams-Bashforth.
55    o ecco
56      - enable trend removal from SSH anomaly obs.
57    o adjoint
58      - a fix for PmEpR when #undef EXACT_CONSERV
59      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
60      - try to fix "hidden" recomp. in forward_step for NLFS
61        (NLFS seems broken sometimes after I checked it in)
62    o seaice:
63     - add c-grid version of the dynamic solver:
64       + three new routines that are the c-grid substitute lsr, dynsolver
65         and ostres
66       + put a few fields that were local to dynsolver into global common
67         blocks, so that I can move the computation of stresses etc into
68         seaice_lsr (saves coding but may break the adjoint).
69     - replace more hardwired parameters by runtime parameters
70     - add ice masks that mask the rhs of the implicit solvers where there
71       is no ice (commented out in seaice_dynsolver, because i am not sure
72       if this works properly), eventually this should replace the clipping
73       of ice velocities in seaice_dynsolver to +/-40cm/s.
74    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
75      include it only where its needed
76    o move balancing of fluxes before the call of external_forcing_surf
77    o seaice:
78      - correct units of turning angles (now they are really in degrees)
79      - move computation of GWATX/Y out of main routine into dynsolver
80      - initialize GWATX/Y in seaice_init
81    o Apply mask on Fresh-Water flux (needed for SSH forcing).
82      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
83    o seaice: add runtime flags for turning angles (default to zero)
84    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
85      and trend from exf forcing and ctrl control adjustments
86    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
87      (since checkpoint57x_post)
88    o change the default rotation period to 86164.s = the Earth rotation
89    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
90      and based on a reference stratification. Tested within hs94.cs-32x32x5.
91    o seaice advection: add code for choosing between the default (2nd order
92      central differences) and multiDim advection schemes provided by
93      pkg/generic_advdiff
94    o seaice:
95      - removed all references to SEAICE_GRID.h fields from
96        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
97        (cubed-sphere configuration will change a little)
98      - grid computations in seaice_init are obsolete now.
99      - cleaned up code a little so that is easier to read (hopefully).
100      - added new (better?) discretizations of default advection and diffusion
101        (turn on with SEAICEuseFluxForm)
102      - replace 1 in 3d global fields by kSurface in growth.F
103      
104    checkpoint58a_post
105    o seaice:
106      - bug fix in advect.F
107    o shelfice:
108      - separate shelfice load anomaly from pload (breaks with time
109        dependent forcing), => introduce constant field shelficeLoadAnomaly.
110        Its default is 0., but it may be computed more cleverly from (unknown)
111        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
112        done offline. A good approximation of the pressure load anomaly is
113        necessary to avoid large initial adjustment processes underneath
114        deep-reaching shelfice.
115      - small fix in ISOMIP shelfice_thermodynamics
116      - add more sophisticated thermodynamics of Hellmer (1989), this is
117        now the default
118      - give a few constants more intuitive names
119    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
120      if bulk formulae are used in long integration (especially EmPmR). Turn
121      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
122      if balancePrintMean, the imbalance that is substracted is printed to
123      STDOUT.
124    o fix bug (typo) in obcs_apply_eta.F
125    o add a new package shelfice which enables us to model the circulation
126      underneath shelf-ice with draughts of hundreds of meters.
127     - works
128     - to do: + include improved thermodynamics
129              + check whether kSurfC (from model/inc/SURFACE.h) can be used
130                instead of new field kTopC
131              + can we use topoFile, Ro_surf and existing code in ini_depth.F
132                instead of new field R_shelfIce and new code in ini_depth.F
133                and ini_mask_etc.F?
134              + adjust vertical mixing schemes?
135    o seaice pkg:
136     - add a cpp-flag to include a simple formula for a salinity dependent
137       freezing point of sea water at the surface
138     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
139       meridional stresses are now different (and hopefully correct)
140    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
141       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
142       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
143    o pkg/diagnostics: add options and parameters for regional-statistics
144       diagnostics ; define regions by reading a region-mask from a file
145       (might add other options later)
146    o pkg/bulk_force:
147     - add option and parameters to use AIM surface-flux formulae.
148     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
149       others forcing fields (defined in PARM05, parameter file "data") are loaded
150       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
151     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
152     - use the right EXCH call for uwind,vwind (to work on CS-grid).
153     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
154       and parameters (note: calcWindStress replaces .NOT.readwindstress).
155     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
156    
157    checkpoint58
158    o add "--embed-source" option to genmake2 which, when the supporting
159      tools can be compiled (as determined by genmake2) will turn on the
160      embed_files package which then embeds the entire MITgcm source code
161      (*.[fFhc] + Makefile) used for the build within the executable
162      - requested by CNH but off by default
163      - adds a paltry <9MB to the mitgcmuv executable in most cases
164      - only writes the output when useEMBEDSRC in eedata is true
165    o clean up 3-dim. relaxation codes:
166      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
167      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
168      * Thanks to Tom Haine for testing!
169    
170    checkpoint57z_post
171    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
172      affects output (@ truncation level) of exp. plume_on_slope ; updated.
173    o fix the pickup behavior for obcs in combination with ptracers
174    o fix a bug in ptracers_external_fields_load
175    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
176      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
177    o transfered surface NH pressure to eta field (if exactConserv).
178    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
179         and update lab_sea output.txt file.
180    o completing 3-dim. relaxation code: additional term
181         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
182      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
183      * At compile time, in "EXF_OPTIONS.h" set
184          #define  ALLOW_CLIMTEMP_RELAXATION
185          #define  ALLOW_CLIMSALT_RELAXATION
186      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
187          tauThetaClimRelax3Dim = 15552000.0,
188          tauSaltClimRelax3Dim  = 15552000.0,
189      * 3 cases:
190          1) Use a constant-in-time 3-dim. field
191          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
192          3) Real-time relax. to time-evolving prescribed field
193    o Adding Laplacian-type smoothness constraint on
194      initial and boundary (forcing) controls (ic, bc)
195      * enable at compile-time via
196        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
197      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
198      * Absolute scale somewhat unclear so far
199      * no area weighting was included since no other cost term does so far
200    
201    checkpoint57y_post
202    First step for a NLFS adjoint
203    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
204    o new init. routines for calc_r_star, calc_surf_dr
205    o still need to deal with ini_masks_etc
206    o testreport seemed happy
207    checkpoint57y_pre
208    
209    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
210    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
211    o add new offset feature to offline pkg (plus minor cleanup)
212    o cfc fixes for final year of integration
213    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
214      be in GCHEM_OPTIONS).
215    
216    checkpoint57x_post
217    o fix testreport Pb in multiple test experiment.
218    o cleanup our namelist syntax in verification:
219      - make it more F95 standards compliant (some work still needed)
220      - allows the vast majority of our tests to work with gfortran
221    o Non-Hydrostatic:
222     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
223     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
224    o Allow to apply AB on T,S rather than on AB(gT,gS):
225     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
226     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
227       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
228     - need a "clever" read_pickup to restart from the other AB formulation
229    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
230    o remove some unused variables (reduces number of compiler warnings)
231    o adjoint
232      * Disable useVariableViscosity for adjoint for time being
233        (there are a number of extensive recomputations)
234      * Initialize certain variables needed for adjoint
235    
236    checkpoint57w_post
237    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
238                 fix the singleCpuIO RS version of MDSWRITEFIELD
239       and add a WARNING if using globalFiles=T with multi-processors.
240    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
241      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
242    o tracer advection scheme:
243      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
244       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
245       was not very convenient).
246      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
247       (further tests needed for the implicit DST & Flux-Limiter schemes).
248    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
249      and sRef for convenience, handy, when you want to initialize
250      ptracers in a large domain with a constant non-zero value. Also,
251      untangle ptracers_init.F a little.
252    
253    checkpoint57v_post
254    o change dome exp. to use variable viscosity in side-drag terms.
255  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
256    incorporated into tutorial_cfc_offline which has been producing    incorporated into tutorial_cfc_offline which has been producing
257    identical results for a few days of testing    identical results for a few days of testing
258    o add new parameter: sideDragFactor to enable half-slip-side BC
259      and change side-drag S/R to use viscosity from mom_calc_visc
260      (can switch back by setting sideDragFactor=0.); affects results at
261      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
262       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
263  o vorticity & strain are now computed without masking, to account for  o vorticity & strain are now computed without masking, to account for
264    no-slip-side BC in variable viscosity calculation ; mask is applied    no-slip-side BC in variable viscosity calculation ; mask is applied
265    anyway later on, before computing advection/coriolis terms.    anyway later on, before computing advection/coriolis terms.
266  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
267    and for passive tracers    and for passive tracers
268  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
269    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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