[gradsusr] Displaying GFS wind gust speeds [SEC=UNOFFICIAL]

[Ken Kato]

Hi all,

Does anyone know how to display surface wind gust speeds using the GFS datasets (self-describing format, high definition) from either the NOMAD or monsoondata servers?
For example, if I use the script below:

'sdfopen http://nomads.ncep.noaa.gov:9090/dods/gfs_hd/gfs_hd20130901/gfs_hd_12z'
'set LAT -47 -8'
'set LON 105 160'
'set lev 1000'
'set t 5'
'd mag(ugrd10m,vgrd10m,gustssfc)'

... it just results in:

Error from MAG:  Too many or too few args
                 Two arguments expected
Operation Error:  Error from mag function
  Error ocurred at column 1
DISPLAY error:  Invalid expression

I've tried all sorts of different combinations such as "d mag(ugrd10m;vgrd10m;gustssfc)", "d gustssfc", etc as well as the GFS data from monsoondata but no luck. However, some websites offer GFS wind gust speed charts (e.g. http://forecasts.bsch.com.au/stormcast.html?ops=gfs:2013090106:2013090606:aus:gustssfc:null#sc) and I've seen the "gustssfc" variable mentioned in past discussions but doesn't appear in the datasets' variables list.

Ken.


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