set data "http://iridl.ldeo.columbia.edu/SOURCES/.NOAA/.NCEP-NCAR/.CDAS-1/.DAILY/.Intrinsic/.total_air_column/.PWAT/%5BT%5Ddifferences/%5BY%5Ddifferences/%5BX%5Ddifferences/%5BX%5D0/detrend-bfl/%5BX%5D0/detrend-bfl/0.0/%5BX%5Dintegrate/%5BT%5Ddifferences/%5BT%5Ddifferences/%5BT%5Ddifferences/0.0/%5BT%5Dintegrate/%5BX+Y+T+%5Ddetrend-bfl/%5BY+T+%5Ddetrend-bfl/%5BX+T+%5Ddetrend-bfl/dods"If ferret refuses to read the file, saying
** netCDF error: Invalid Argument is this a CDF file ?it is quite possible that you can use set data after you download the netcdf file.
If you have questions, comments, or problems please use the help@iri link. This page will evolve as we learn more about how Ferret handles data downloads, and your help pointing out problems is much appreciated.
There is a bug in ferret which is corrected in release 6.0 (see notes about "nonstandard calendar axes"). Please upgrade if you are using monthly data.