National Oceanic and Atmospheric Administration, United States Department of Commerce


Data Description

    NESDIS Blended Hydrometeorological Products - This blended hydrometeorological product suite contains three primary outputs: 1) blended Rain Rate (RR), 2) Total Precipitable Water (TPW), and 3) Percentage of TPW normal (PCT), or TPW anomaly. The PCT shows the percentage departure of TPW from the NASA Water Vapor Project (NVAP) climatology (1988-1999). The blended products were merged from polar-orbiting and geostationary satellite sensors including legacy AMSU/MHS, SSMIS, GOES Sounders, as well as ATMS from S-NPP and GPS TPW. Individual biases of the data sources have been mitigated to produce a more meteorologically significant product. The blended methodology provides seamless global coverage without gaps to allow for the analysis of atmospheric moisture over land and ocean. The products are on a Mercator projection with 16 km resolution at the equator. The map is centered at the equator and 160 degrees W. It has 1437 lines and 2500 elements, which covers the earth from about 71 degrees N to 71 degrees S. The products are hourly in HDF-EOS file format. Also, included are PNG images of the products generated per hour over the globe and 14 local regions. These operational products were produced by the NOAA/NESDIS Office of Satellite and Product Operations (OSPO). The TPW/PCT products have been operational since 2009, and the RR products since 2011. However, the archvie period of record begins in 2013. See the Details Section below for more information.

Details - Metadata, Documentation



(maximum range is 366 days)
Start Date
(format: YYYY-MM-DD)

Start Date
End Date
(format: YYYY-MM-DD)
End Date

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Percentage of TPW Normal - image
Percentage of TPW Normal - data
Blended Rain Rate - image
Blended Rain Rate - data
Blended Total Precipitable Water - image
Blended Total Precipitable Water - data

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