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revision 1.536 by jmc, Wed Aug 24 23:36:01 2005 UTC revision 1.580 by jmc, Tue Nov 8 06:27:15 2005 UTC
# Line 4  $Name$ Line 4  $Name$
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    o Non-Hydrostatic:
8     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
9     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
10    o Allow to apply AB on T,S rather than on AB(gT,gS):
11     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
12     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
13       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
14     - need a "clever" read_pickup to restart from the other AB formulation
15    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
16    o remove some unused variables (reduces number of compiler warnings)
17    
18    checkpoint57w_post
19    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
20                 fix the singleCpuIO RS version of MDSWRITEFIELD
21       and add a WARNING if using globalFiles=T with multi-processors.
22    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
23      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
24    o tracer advection scheme:
25      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
26       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
27       was not very convenient).
28      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
29       (further tests needed for the implicit DST & Flux-Limiter schemes).
30    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
31      and sRef for convenience, handy, when you want to initialize
32      ptracers in a large domain with a constant non-zero value. Also,
33      untangle ptracers_init.F a little.
34    
35    checkpoint57v_post
36    o change dome exp. to use variable viscosity in side-drag terms.
37    o remove all the files from the cfc_offline test since they are now
38      incorporated into tutorial_cfc_offline which has been producing
39      identical results for a few days of testing
40    o add new parameter: sideDragFactor to enable half-slip-side BC
41      and change side-drag S/R to use viscosity from mom_calc_visc
42      (can switch back by setting sideDragFactor=0.); affects results at
43      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
44       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
45    o vorticity & strain are now computed without masking, to account for
46      no-slip-side BC in variable viscosity calculation ; mask is applied
47      anyway later on, before computing advection/coriolis terms.
48    o modify exp4 to test new obcs support for reading from external files
49      and for passive tracers
50    o fix behavior of ptracers_monitor when monitor output is written to a
51      netcdf-file; still not independent of monitor.F (writes in the same
52      file).
53    o change default value of tRef (put a uniform, meaningful value for ocean
54      & atmos) and initialize sRef (was missing, as Martin mentioned).
55    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
56      to be proportional to enstrophy dissipation length.  Thus,
57       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
58      This is now consistent with Smagorinsky and with the manual.
59    
60    checkpoint57u_post
61    o OBCS and PTRACERS: add open boundary support for passive tracers
62      - either use homogenous (pseudo) v.Neumann conditions or prescribe
63        OB-values from file; this is not different from the way theta and salinity
64        are treated
65      - however, Orlanski-radiation conditions are not supported, and the model
66        will stop if you use pTracers and Orlanski at the same time.
67      - beefed up the rountine obcs_external_fields_load: now only those open
68        boundary values are overwritten with values from files for which there
69        are really files, otherwise the OB-fields remain untouched. This makes
70        it possible to use different OBs at different ends of the domain (as
71        with EXF)
72    o reduce number of exch calls in shap_filt (s2).
73    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
74      truncation level) 4/5 MLAdjust test results (11&12 digits match).
75    
76    checkpoint57t_post
77    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
78    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
79      same truncation, independent of the face number: affects affects several
80      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
81    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
82      note that biharmonic viscosity + no-slip was not tested in any experiment.
83    o fix bug in non-linear free-surf side-drag ; generate new output for
84      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
85    o make mnc honor the writeBinaryPrec flag for most kinds of output
86    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
87    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
88      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
89    o add brackets in multi-terms sum to get same truncation, independent of
90      the face number (manage to get exactly same value of gU,gV at the cs-edge)
91      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
92    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
93      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
94      a maximum grid-scale Reynolds number.  Also, changes all length calculations
95      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
96      Suggested values of viscosity parameters found in mom_calc_visc.
97      Many new viscosity diagnostics available.
98    
99    checkpoint57s_post
100    o Add clearing-house for viscosity calculations, mom_calc_visc and
101      correct numerous bugs in LeithD and Smagorinsky discretizations.  
102      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
103      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
104      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
105      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
106      The Strain-Tension form is now called with useStrainTensonVisc=.true.
107      ViscAhStrain and viscAhTension are now retired.
108    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
109    o In response to JMC's bug report, genmake2 now ignores any soft-links
110      that it finds in the *current* directory when searching for files.
111      Soft-links found in any other source directories will still work as
112      they did before.
113    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
114      a C routine to unlimit the stack size
115    o mnc-ify pkg/aim snapshot vars
116    o mnc-ify pkg/land as requested by Daniel
117    o various changes to mnc including:
118      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
119      - output can now be grouped so that all files within a group
120          change the ITER portion of their names in lock-step together
121      - can now read ("global") PER-FACE (in addition to PER-TILE) files
122          and works with both EXCH1 and EXCH2 (but needs more testing)
123      - writing works for all verification test cases w/ g77 on Linux
124    
125    checkpoint57r_post
126    o make MNC variable initialization happen earlier
127    o add diagnostics for (almost) each term of the momentum Eq.
128    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
129  o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)  o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
130  o remove MINIMAL_TAVE_OUTPUT option ;  o remove MINIMAL_TAVE_OUTPUT option ;
131    add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).    add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
132  o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src  o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
133    allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)    allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
134    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
135    o add time-dependent SST, SSS control
136    o cost terms in ecco/ modularized (new cost_generic.F)
137    o cost_averages routines are modularized (new cost_averagesgeneric.F)
138    o new infrastructure for seaice model vs. obs misfits in seaice/
139      * driver from the_main_loop.F is seaice_cost_driver.F
140      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
141      * gradient check in Exp. 6a of natl_box_adjoint/
142    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
143      (see README file)
144    
145  checkpoint57q_post  checkpoint57q_post
146  o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)  o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)

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