[gradsusr] Accessing aggregated wave data in ww3

Marsh, Kieren [FGUAE] k.marsh at fugro-uae.com
Mon Nov 24 07:14:04 EST 2014


Hi there,

I am trying to access aggregated ww3 swell wave data in a remote netcdf file on a THREDDS server.

When I access the whole dataset via 'sdfopen http://...ww3_run' GrADS does not display the aggregated swell field with "ordered_sequence_of_data" as one of the coordinates. Only the fields with level "Ground or water surface" are displayed. I believe this is level 1 in the original GRIB file. The aggregated swell field is on GRIB level 241.

Now, I can access individual fields via 'sdfopen http://...ww3_run?sig_height,time,lat,lon' notation but I still can't access the aggregated swell field. I have tried: 'sdfopen http://...ww3_run?swell,time, ordered_sequence_of_data,lat,lon<http://...ww3_run?swell,time,%20ordered_sequence_of_data,lat,lon>' but GrADS always returns "SDF file does not have any non-coordinate variables". Other combinations do not work either.

Can anyone offer any advice/help?

Kind regards

Kieren Marsh



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