This is a snapshot of GHCN v2 from 16 Dec 2010. Information about GHCN v2 is below. Data was uploaded to FTP on 4 Aug 2011 by Jared Rennie

The Global Historical Climatology Network (GHCN-Monthly) data base contains historical temperature, precipitation, and pressure data 
for thousands of land stations worldwide. The period of record varies from station to station, with several thousand extending back 
to 1950 and several hundred being updated monthly via CLIMAT reports. The data are available without charge through NCDC's anonymous FTP service.

Both historical and near-real-time GHCN data undergo rigorous quality assurance reviews. These reviews include preprocessing checks 
on source data, time series checks that identify spurious changes in the mean and variance, spatial comparisons that verify the 
accuracy of the climatological mean and the seasonal cycle, and neighbor checks that identify outliers from both a serial and a spatial perspective.

For more information on GHCN v2, please visit the following web page: http://www.ncdc.noaa.gov/ghcnm/v2.php