NOAA Office of Satellite and Product Operations


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Blended Rain Rate Product Overview

The blended rain rate (RR) product is produced hourly by blending together recent rain rate retrievals from passive microwave instruments on 9 polar-orbiting satellites, including POES NOAA-18, NOAA-19, Metop-A, Metop-B, S-NPP, GCOM-W1, GPM and also DMSP F17 and F18. The blended RR eliminates the bias between those data sets and provides a unified, meteorologically significant rain rate field for satellite analysts and weather forecasters.

The product is generated with the latest 10 hour worth of rain rate retrievals from multi-satellites/algorithms and output with a Mercator projection with 16-km resolution at the equator. The map is centered at the equator and 160°W. It has 1437 lines and 2500 elements, which covers the earth from about 71°N to 71°S. The cut line is at 20°E, which was chosen to emphasize ocean areas. The product is converted into McIDAS format for NESDIS satellite analysts and also subset into 4 AWIPS regions (Super National, Alaska, Hawaii, Puerto Rico) for NWS forecasters.

Blended Rain Rate Example

Details on the algorithm can be found at the Algorithm Description link.