WELCOME to the PRACTICAL EXERCISES - CLM-Community
WELCOME to the PRACTICAL EXERCISES - CLM-Community
WELCOME to the PRACTICAL EXERCISES - CLM-Community
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About GrADS<br />
• GrADS is a ra<strong>the</strong>r easy-<strong>to</strong>-use <strong>to</strong>ol <strong>to</strong> visualize fields from<br />
meteorolgical models<br />
• GrADS implements a 4-dimensional data model<br />
• A dataset must be described by a descrip<strong>to</strong>r file (with<br />
extension .ctl), which defines (among o<strong>the</strong>rs)<br />
– dset grib_filename<br />
– index ano<strong>the</strong>r_filename.idx<br />
– tdef 13 linear 12Z21dec2009<br />
– xdef 129 linear 1 1<br />
– ydef 161 linear 1 1<br />
– zdef 40 levels<br />
10281 10024 etc.<br />
– VARS 140<br />
HSURF 0, 8, 1, 0 ** height of orography<br />
• You have <strong>to</strong> run gribmap –v -i test_m40.ctl <strong>to</strong><br />
create <strong>the</strong> index file.<br />
07.-11.02.2011 COSMO-<strong>CLM</strong> Training 2011 38
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