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

Dataset Size Last Modified
     Folder  interp_OLR   --
         olr.day.1981-2010.ltm.nc 7.679 Mbytes 2011-09-07T17:41:25Z
         olr.day.ltm.nc 7.679 Mbytes 2011-09-07T17:41:25Z
         olr.day.mean.nc 298.5 Mbytes 2013-04-10T19:03:51Z
         olr.mon.1981-2010.ltm.nc 255.2 Kbytes 2011-08-31T15:10:41Z
         olr.mon.ltm.nc 255.2 Kbytes 2011-08-31T15:10:41Z
         olr.mon.mean.nc 9.803 Mbytes 2013-04-10T19:03:56Z

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