Before revision: The Global Historical Climatology Network (GHCN) is a database of temperature, precipitation and pressure records managed by the National Climatic Data Center (NDCC), Arizona State University and the Carbon Dioxide Information Analysis Center.
After revision: The Global Historical Climatology Network (GHCN) is a data set of temperature, precipitation and pressure records managed by the National Climatic Data Center (NDCC), Arizona State University and the Carbon Dioxide Information Analysis Center.