Dev, If you know Python, we have the Siphon library (siphon.readthedocs.org) that can be used to programmatically walk a catalog and perform NCSS queries in Python. If not, you can still programmatically hit URLs for the queries. The query you made would be: http://nomads.ncdc.noaa.gov/thredds/ncss/grid/modeldata/cmd_flxf/1984/198405/19840505/flxf00.gdas.1984050500.grb2/?var=Temperature_surface&temporal=all&accept=netcdf So you could modify the URL to point to a different dataset. It'd be better to crawl the catalog (which is XML) to see what datasets are available, but I'm not sure what constraints you're working with. Ryan > Hi Ryan, > That works for making a subset on an individual file, but I want to subset > all the files, or at least large batches of files. Is there anyway to do that? > Thanks! Ticket Details =================== Ticket ID: XVV-643023 Department: Support THREDDS Priority: Normal Status: Closed