NOAA/PSL Catalog http://psl.noaa.gov/thredds/catalog/Datasets/ncep.reanalysis.derived/catalog.html

Dataset Size Last Modified
     Folder  ncep.reanalysis.derived   --
         Folder  other_gauss/   --
         Folder  pressure/   --
         Folder  sigma/   --
         Folder  spectral/   --
         Folder  surface/   --
         Folder  surface_gauss/   --
         Folder  tropopause/   --

NOAA/PSL at NOAA PSL see Info
THREDDS Data Server [Version 4.6.15-SNAPSHOT - 2020-01-28T04:01:10+0000] Documentation