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revision 1.539 by heimbach, Thu Sep 1 06:08:55 2005 UTC revision 1.566 by jmc, Tue Oct 11 01:34:15 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 change default value of tRef (put a uniform, meaningful value for ocean
8      & atmos) and initialize sRef (was missing, as Martin mentioned).
9    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
10      to be proportional to enstrophy dissipation length.  Thus,
11       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
12      This is now consistent with Smagorinsky and with the manual.
13    
14    checkpoint57u_post
15    o OBCS and PTRACERS: add open boundary support for passive tracers
16      - either use homogenous (pseudo) v.Neumann conditions or prescribe
17        OB-values from file; this is not different from the way theta and salinity
18        are treated
19      - however, Orlanski-radiation conditions are not supported, and the model
20        will stop if you use pTracers and Orlanski at the same time.
21      - beefed up the rountine obcs_external_fields_load: now only those open
22        boundary values are overwritten with values from files for which there
23        are really files, otherwise the OB-fields remain untouched. This makes
24        it possible to use different OBs at different ends of the domain (as
25        with EXF)
26    o reduce number of exch calls in shap_filt (s2).
27    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
28      truncation level) 4/5 MLAdjust test results (11&12 digits match).
29    
30    checkpoint57t_post
31    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
32    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
33      same truncation, independent of the face number: affects affects several
34      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
35    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
36      note that biharmonic viscosity + no-slip was not tested in any experiment.
37    o fix bug in non-linear free-surf side-drag ; generate new output for
38      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
39    o make mnc honor the writeBinaryPrec flag for most kinds of output
40    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
41    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
42      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
43    o add brackets in multi-terms sum to get same truncation, independent of
44      the face number (manage to get exactly same value of gU,gV at the cs-edge)
45      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
46    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
47      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
48      a maximum grid-scale Reynolds number.  Also, changes all length calculations
49      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
50      Suggested values of viscosity parameters found in mom_calc_visc.
51      Many new viscosity diagnostics available.
52    
53    checkpoint57s_post
54    o Add clearing-house for viscosity calculations, mom_calc_visc and
55      correct numerous bugs in LeithD and Smagorinsky discretizations.  
56      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
57      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
58      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
59      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
60      The Strain-Tension form is now called with useStrainTensonVisc=.true.
61      ViscAhStrain and viscAhTension are now retired.
62    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
63    o In response to JMC's bug report, genmake2 now ignores any soft-links
64      that it finds in the *current* directory when searching for files.
65      Soft-links found in any other source directories will still work as
66      they did before.
67    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
68      a C routine to unlimit the stack size
69    o mnc-ify pkg/aim snapshot vars
70    o mnc-ify pkg/land as requested by Daniel
71    o various changes to mnc including:
72      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
73      - output can now be grouped so that all files within a group
74          change the ITER portion of their names in lock-step together
75      - can now read ("global") PER-FACE (in addition to PER-TILE) files
76          and works with both EXCH1 and EXCH2 (but needs more testing)
77      - writing works for all verification test cases w/ g77 on Linux
78    
79    checkpoint57r_post
80    o make MNC variable initialization happen earlier
81    o add diagnostics for (almost) each term of the momentum Eq.
82  o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.  o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
83  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)
84  o remove MINIMAL_TAVE_OUTPUT option ;  o remove MINIMAL_TAVE_OUTPUT option ;

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