NOAA/ESRL/PSD Catalog http://www.esrl.noaa.gov/psd/thredds/catalog/Datasets/ncep.reanalysis.derived/sigma/daily/ltm/catalog.html


Dataset Size Last Modified
     Folder  ltm   --
         chi.day.ltm.nc 85.48 Mbytes 2014-10-20T21:14:19Z
         psi.day.ltm.nc 83.56 Mbytes 2014-10-20T21:14:30Z

NOAA/ESRL/PSD at NOAA ESRL PSD see Info
THREDDS Data Server [Version 4.3.15 - 20121218.1126] Documentation