NOAA/ESRL/PSD Catalog http://www.esrl.noaa.gov/psd/thredds/catalog/Datasets/NARR/time_invariant/catalog.html

Dataset Size Last Modified
     Folder  time_invariant   --
         hgt.sfc.nc 972.0 Kbytes 2012-02-03T00:54:50Z
         land.nc 1.165 Mbytes 2012-02-03T00:54:50Z

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