NOAA/ESRL/PSD Catalog http://esrl.noaa.gov/psd/thredds/catalog/Datasets/gpcc/full_v6/catalog.html

Dataset Size Last Modified
     Folder  full_v6   --
         precip.mon.1981-2010.ltm.1x1.v6.nc 4.671 Mbytes 2013-03-07T18:17:40Z
         precip.mon.1981-2010.ltm.2.5x2.5.v6.nc 750.6 Kbytes 2013-03-12T16:35:46Z
         precip.mon.1981-2010.ltm.v6.nc 18.67 Mbytes 2013-03-07T18:17:08Z
         precip.mon.nobs.1x1.v6.nc 171.0 Mbytes 2013-03-07T18:15:20Z
         precip.mon.nobs.2.5x2.5.v6.nc 27.38 Mbytes 2013-03-12T16:34:17Z
         precip.mon.nobs.v6.nc 684.3 Mbytes 2013-03-12T17:47:32Z
         precip.mon.total.1x1.v6.nc 342.1 Mbytes 2013-03-07T18:15:02Z
         precip.mon.total.2.5x2.5.v6.nc 54.75 Mbytes 2013-03-12T16:35:42Z
         precip.mon.total.v6.nc 1.368 Gbytes 2013-03-12T17:48:51Z

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