NOAA/ESRL/PSD Catalog http://esrl.noaa.gov/psd/thredds/catalog/Datasets/20thC_ReanV2/Derived/catalog.html

Dataset Size Last Modified
     Folder  Derived   --
         Folder  4Xdailies/   --
         Folder  8Xdailies/   --
         Folder  Dailies/   --
         Folder  Monthlies/   --

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