/[MITgcm]/MITgcm/verification/global_with_exf/README
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revision 1.2 by heimbach, Tue Nov 12 20:57:00 2002 UTC revision 1.3 by dimitri, Thu Aug 7 02:31:29 2003 UTC
# Line 13  the following 2 modifications are necess Line 13  the following 2 modifications are necess
13  2. in exf_set_climsst.F:  2. in exf_set_climsst.F:
14     comment the 'quality' check, i.e. avoid the setting     comment the 'quality' check, i.e. avoid the setting
15     to freezing temperature if less than climtempfreeze.     to freezing temperature if less than climtempfreeze.
16    
17    ================================
18    
19    menemenlis@jpl.nasa.gov 05-Aug-2003
20    
21    On-the-fly spatial interpolation has been added to pkg/exf.
22    It is enabled by defining CPP option USE_EXF_INTERPOLATION
23    in EXF_CPPOPTIONS.h or in ECCO_CPPOPTIONS.h
24    Both bi-linear and bi-cubic (#define BICUBIC) are supported.
25    
26    This package is a placeholder until more general coupler
27    is made available by ESMF project.  It assumes that input
28    grid is Cartesian with arbitrary latitude increments in the
29    y-direction but with equidistant longitude increments in
30    the x-direction.  The input grid must encompass the complete
31    output grid in the y-direction (i.e., extrapolation is not
32    supported) and it is assumed that the grid is periodic in
33    the x-direction.
34    
35    The verification/global_with_exf experiment has been modified
36    to use the USE_EXF_INTERPOLATION option, the input grids
37    being defined by variables *_lon0, *_lon_inc, *_lat0, *_lat_inc
38    *_nlon and *_nlat in input/dat.exf and input/data.exf_clim
39    
40       *_lon0, *_lat0    :: lon and lat of sw corner of global input grid
41       *_lon_inc         :: scalar x-grid increment
42       *_lat_inc         :: vector y-grid increments
43       *_nlon and *_nlat :: input x-grid and y-grid size
44    
45    In this particular example the input and output grids are
46    the same, so the results of the verification experiment remained
47    unchanged from before.

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