Global Historical Climatology Network (GHCN), Version 1 (Version Superseded)

**Please note, this dataset has been superseded by a newer version (see below). Users should not use this version except in rare cases (e.g., when reproducing previous studies that used this version).** The Global Historical Climatology Network (GHCN) Version 1 is a comprehensive, global, surface, baseline, climate data set designed for monitoring and detecting climate change. Comprised of surface station observations of temperature, precipitation, and pressure, all GHCN data are monthly. GHCN was produced jointly by the NCDC, Arizona State University, and the Carbon Dioxide Information Analysis Center (CDIAC) at Oak Ridge National Laboratory (ORNL). GHCN version 1 was released in August of 1992 and has data from ~6,000 Temperature stations ~7,500 Precipitation stations ~2,000 Pressure stations The earliest station data was from 1697. The most recent is from 1990. Version 1 was created from 15 source data sets. Quality Control includes visual inspection of graphs of all station time series, tests for precipitation digitized 6 months out of phase, tests for different stations having identical data, and other tests.