|Coverage||Global Land (90N-90S, 0-360E)|
|Time Period||January 1948 - Present|
|Resolution||2.5 x 2.5 degree, monthly|
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.
This dataset is NCEP version 1.
This dataset is a 50-year reconstruction of global monthly rain gauge data from 1948 through 2002. The gridded monthly dataset is interpolated from over 15,000 stations collected from version 2 of the Global Historical Climate Network (GHCN) [Vose et al., 1992] and the Climate Anomaly Monitoring System (CAMS) [Ropelewski et al., 1984].
This dataset is available through the NCEP ftp site at NOAA's Climate Prediction Center