Ground-Based Climate Rainfall Products

Ground-based rainfall measurements from gauges/radars often provide higher spatial and temporal sampling as well as the most direct measure of rainfall over many regions. Often such data are used for purposes of calibration, however, over regions with sufficient coverage they can provide better large-scale climate estimates than any satellite remote sensing technique. For this reason, accumulations of global gridded rain gauge data have been incorporated into several of the merged products.

GHCN + CAMS [More information] [Plot Intercomparison]
This dataset is a combination of rain gauge station data from the Global Historical Climate Network (GHCN) and the Climate Assessment and Monitoring System (CAMS). It is one of the component products used in the GPCP merged climate rainfall dataset and it covers the period from January 1979 through December 1985 prior to the availability of the GPCC dataset.
GPCC [More information] [Plot Intercomparison]
The Global Precipitation Climatology Centre (GPCC) produces monthly global gridded datasets of gauge observations from around 6700 stations world wide. Extensive quality control is performed on the station data. This product is one of the component products used in the GPCP merged climate rainfall dataset and it covers the period from January 1986 through the present.
NCEP CAMS [More information] [Plot Intercomparison]
The Climate Anomaly Monitoring System (CAMS) dataset is available for the period from January 1979 through the present. It is combined with the OLR Precipitation Index (OPI) for the global coverage CAMS-OPI merged climate rainfall dataset.
NCEP 50-year Reconstruction [More information] [Plot Intercomparison]
A 50-year reconstruction of rain gauge data from the Global Historical Climate Network (GHCN) and the Climate Assessment and Monitoring System (CAMS) for the period from 1948 through 2000.