GSD TDS Catalog http://esrl.noaa.gov/gsd/thredds/catalog.html

Dataset Size Last Modified
     Folder  GSD Gridded Data   --
         Folder  13kmruc/   --
         Folder  glaps/   --
         Folder  hmtb/   --
         Folder  hrrr/   --
         Folder  hrrr_smoke/   --
         Folder  rap/   --
         Folder  sos/   --
         Folder  retro/   --

ESRL/GSD TDS at ESRL/GSD see Info
THREDDS Data Server [Version 4.6.1 - 2015-05-14T15:42:42-0600] Documentation