Global Historical Climatology Network (GHCN)

The Global Historical Climatology Network (GHCN) is a comprehensive database that collects, archives, and shares historical weather data from thousands of stations worldwide. It includes measurements like temperature, precipitation, and other climate variables, dating back over a century. This data helps scientists analyze climate patterns, monitor long-term changes, and understand how the Earth's climate is evolving. By providing a consistent and quality-controlled record of global weather history, GHCN is essential for climate research, policy-making, and understanding the impacts of climate change.