THREDDS data servers (TDS) simplify the discovery of scientific data and metadata, but don’t have the performance necessary to serve large datasets to the desktop
If you’ve submitted a data request through the NetCDF Subset form and received an NCCS response too large or submitted a data request through the OPeNDAP dataset access form and received a Request too big response, your requested data size exceeds the maximum limit for the server. Requests of more than a year of data can exceed the limit.
If you’re retrieving an exploratory or test file you may want to reduce the coordinates coverage (bounding box), levels or time range and try again. If you’d like the full file, or multiple files, you may want to use a utility (such as wget), an OPeNDAP client or application, such as UV-CDAT, Panoply, Ferret, or GrADS, to access the data.