DataFed OGC WCS Client

The Open Geospatial Consortium (OGC) Web Coverage Service (WCS) specification addresses the access of geospatial data is focused on gridded datasets. Currently, DataFed is developing the capability to handle data served through WCSs and can handle GeoTiff and NetCDF coverages. DataFed is participating as a WCS client in the GALEON interoperability experiment.

The following WCS servers have been tested within the DataFed client:

Unidata Real-time Model Data

Coverage(s) tested: GFS_Global_0p5deg_20051027_0000.grib2

Format: NetCDF

Source URL: http://motherlode.ucar.edu:8080/thredds/wcs/global/testdata/catalog.html

DataFed URL: http://webapps.datafed.net/datafed.aspx?dataset_abbr=THREDDS_CDM

Comments: Special DataFed ”wrapper” to accommodate separate WCS server for each model run

Florence Galeon Test Data

Coverage(s) tested: sst(time-lat-lon)

Format: NetCDF

Source URL: http://athena.pin.unifi.it:8080/galeon/WCS-v1.0?REQUEST=GetCapabilities&VERSION=1.0.0&SERVICE=WCS

DataFed URL: http://webapps.datafed.net/datafed.aspx?dataset_abbr=SeaTemp

Comments: Successful test

Unidata Galeon Test Data

Coverage(s) tested: eta.nc, striped.nc

Format: GeoTiff

Source URL: http://motherlode.ucar.edu:8080/thredds/wcs/testdata/eta.nc?request=GetCapabilities&version=1.0.0&service=WCS

DataFed URL:

Comments: The resulting coverages appear to be projected rather than the EPSG:4326 specified in their DescribeCoverage

George Mason Galeon Test Data

Coverage(s) tested:

Format: NetCDF

Source URL: http://data.laits.gmu.edu/cgi-bin/tsunami/wcs100?version=1.0.0&service=WCS&request=getCapabilities

DataFed URL:

Comments: Gives server error. Coverages are projected (only EPSG:4326 is currently supported in DataFed)

ICEDS WCS

Coverage(s) tested: srtm

Format: GeoTiff

Source URL: http://iceds.ge.ucl.ac.uk/cgi-bin/wcs?map=wcs.map&SERVICE=WCS&REQUEST=GetCapabilities

DataFed URL:

Comments: Large dataset – use small bounding box for better performance