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revision 1.545 by edhill, Sun Sep 11 04:37:01 2005 UTC revision 1.569 by jmc, Wed Oct 12 02:13:40 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 vorticity & strain are now computed without masking, to account for
8      no-slip-side BC in variable viscosity calculation ; mask is applied
9      anyway later on, before computing advection/coriolis terms.
10    o modify exp4 to test new obcs support reading from external files
11      and for passive tracers
12    o fix behavior of ptracers_monitor when monitor output is written to a
13      netcdf-file; still not independent of monitor.F (writes in the same
14      file).
15    o change default value of tRef (put a uniform, meaningful value for ocean
16      & atmos) and initialize sRef (was missing, as Martin mentioned).
17    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
18      to be proportional to enstrophy dissipation length.  Thus,
19       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
20      This is now consistent with Smagorinsky and with the manual.
21    
22    checkpoint57u_post
23    o OBCS and PTRACERS: add open boundary support for passive tracers
24      - either use homogenous (pseudo) v.Neumann conditions or prescribe
25        OB-values from file; this is not different from the way theta and salinity
26        are treated
27      - however, Orlanski-radiation conditions are not supported, and the model
28        will stop if you use pTracers and Orlanski at the same time.
29      - beefed up the rountine obcs_external_fields_load: now only those open
30        boundary values are overwritten with values from files for which there
31        are really files, otherwise the OB-fields remain untouched. This makes
32        it possible to use different OBs at different ends of the domain (as
33        with EXF)
34    o reduce number of exch calls in shap_filt (s2).
35    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
36      truncation level) 4/5 MLAdjust test results (11&12 digits match).
37    
38    checkpoint57t_post
39    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
40    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
41      same truncation, independent of the face number: affects affects several
42      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
43    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
44      note that biharmonic viscosity + no-slip was not tested in any experiment.
45    o fix bug in non-linear free-surf side-drag ; generate new output for
46      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
47    o make mnc honor the writeBinaryPrec flag for most kinds of output
48    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
49    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
50      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
51    o add brackets in multi-terms sum to get same truncation, independent of
52      the face number (manage to get exactly same value of gU,gV at the cs-edge)
53      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
54    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
55      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
56      a maximum grid-scale Reynolds number.  Also, changes all length calculations
57      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
58      Suggested values of viscosity parameters found in mom_calc_visc.
59      Many new viscosity diagnostics available.
60    
61    checkpoint57s_post
62    o Add clearing-house for viscosity calculations, mom_calc_visc and
63      correct numerous bugs in LeithD and Smagorinsky discretizations.  
64      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
65      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
66      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
67      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
68      The Strain-Tension form is now called with useStrainTensonVisc=.true.
69      ViscAhStrain and viscAhTension are now retired.
70    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
71    o In response to JMC's bug report, genmake2 now ignores any soft-links
72      that it finds in the *current* directory when searching for files.
73      Soft-links found in any other source directories will still work as
74      they did before.
75    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
76      a C routine to unlimit the stack size
77  o mnc-ify pkg/aim snapshot vars  o mnc-ify pkg/aim snapshot vars
78  o mnc-ify pkg/land as requested by Daniel  o mnc-ify pkg/land as requested by Daniel
79  o various changes to mnc including:  o various changes to mnc including:

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