The Global Historical Climatology Network version 1 (GHCN1) data and documentation can be obtained from the Carbon Dioxide Information Analysis Center's Web site at

Extract all the data files into the same directory -- "c:\ncdc\ghcn", for example. Do not change any of the extracted file names.

If you need a utility to extract the archived data files, I suggest a free program such as 7-Zip, which can be downloaded from

Copyright 1995-2011, David M. Lawrence

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