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GHCN Monthly

National Oceanic and Atmospheric Administration

National Climatic Data Center

Effective May 2, 2011, the Global Historical Climatology Network-Monthly (GHCN-M) version 3 dataset of monthly mean temperature will replace GHCN-M version 2 as the dataset for operational climate monitoring activities. Although GHCN-M version 2 will continue to be updated with recent observations until June 30, 2011, users are encouraged to begin using GHCN-M version 3. Please see: Summary of Recent Changes in the GHCN-M Temperature Dataset and Merged Land-Ocean Surface Temperature Analyses.

Questions?

For all climate questions, please contact the National Climatic Data Center's Climate Services and Monitoring Division:

Climate Services and Monitoring Division
NOAA/National Climatic Data center
151 Patton Avenue
Asheville, NC 28801-5001
fax: +1-828-271-4876
phone: +1-828-271-4800
email: ncdc.info@noaa.gov
To request climate data, please E-mail:ncdc.orders@noaa.gov

For questions specific to GHCNM, please email: ncdc.ghcnm@noaa.gov.