# Global Historical Climatology Network-Monthly (GHCN-M) ## Context The Global Historical Climatology Network (GHCN) is an integrated database of climate summaries from land surface stations across the globe. This data set contains gridded mean temperature anomalies, or departures from a reference value or long-term average, from the Global Historical Climatology Network-Monthly (GHCN-M) version 3.2.1 temperature data set. The gridded anomalies were produced from GHCN-M bias corrected data. Each month of data consists of 2,592 gridded data points produced on a 5° by 5° basis for the entire globe (72 longitude by 36 latitude grid boxes). * **Frequency**: Monthly * **Period**: 1880 to 2016 ## Content Gridded data for every month from January 1880 to the most recent month is available. The data are temperature anomalies in degrees Celsius. Each gridded value was multiplied by 100 and written to file as an integer. Missing values are represented by the value -9999. The data are formatted by year, month, latitude and longitude. There are 72 longitude grid values per line -- each grid is labeled as a concatenation of "lon