source: LMDZ6/trunk/tools/make_sso/README @ 4476

Last change on this file since 4476 was 4168, checked in by evignon, 2 years ago

deuxieme phase de travail pour l'inclusion de make_sso
Ehouarn, David, Romain , Etienne

File size: 1.0 KB
Line 
1make_sso
2
3routine to compute subfgrid scale orography parameters
4from a spherical harmonics method
5
6Requirements:
7- SPHEREPACK library
8- FFTW ?
9- ifortran
10- netcdf
11- an adequate environment defined in make_sso.env
12
13Options:
14
15 ./make_sso  -i <file>  -v <var>  -res <nlon> <nlat>  -m <mask>  -f <ffac>  -t
16  <tfac>
17 
18 Where:
19 
20  <file>:   input file name
21  <var> :   height variable name
22  <nlon>:   number of distinct longitude points of output grid (iim)
23  <nlat>:   number of distinct latitude  points of output grid (jjm+1)
24  <mask>:   can be:  1. a mask file (o2a.nc)
25                     2. "noro": computed with grid_noro
26            default: 3. "spec": computed internally
27  <ffac>:   filtering  width: ffac*Do         (Do:output resol.)
28  <tfac>:   transition width: Di+tfac*(Do-Di) (Di: input resol.)
29 
30 Note that latitudes grid contains both poles.
31
32
33Example to compile then run make_sso from a high-resolution Relief.nc file to
34a 180x90 horizontal grid.
35
36./compile
37file=Relief.nc
38./make_sso -i $file -res 180 91 -v z
39
40Output file is make_sso_180x91_${file}
41
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