NESDIS Blended Total Precipitable Water (TPW) Products

Metadata Updated: February 27, 2019

The blended Total Precipitable Water (TPW) product is derived from multiple sensors/satellites. The Percentage of TPW normal (PCT), or TPW anomaly, 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, however, the archvie period of record begins in 2013.

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Metadata Date November 5, 2018
Metadata Created Date March 7, 2016
Metadata Updated Date February 27, 2019
Reference Date(s) September 30, 2009 (publication)
Frequency Of Update continual

Metadata Source

Harvested from NOAA CSW Harvest Source

Graphic Preview

Global Blended TPW

Additional Metadata

Resource Type Dataset
Metadata Date November 5, 2018
Metadata Created Date March 7, 2016
Metadata Updated Date February 27, 2019
Reference Date(s) September 30, 2009 (publication)
Responsible Party DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce (Point of Contact)
Contact Email
Access Constraints Cite this dataset when used as a source., Distribution liability: NOAA and NCEI make no warranty, expressed or implied, regarding these data, nor does the fact of distribution constitute such a warranty. NOAA and NCEI cannot assume liability for any damages caused by any errors or omissions in these data. If appropriate, NCEI can only certify that the data it distributes are an authentic copy of the records that were accepted for inclusion in the NCEI archives., Use liability: NOAA and NCEI cannot provide any warranty as to the accuracy, reliability, or completeness of furnished data. Users assume responsibility to determine the usability of these data. The user is responsible for the results of any application of this data for other than its intended purpose.
Bbox East Long 180.0
Bbox North Lat 71.0
Bbox South Lat -71.0
Bbox West Long -180.0
Coupled Resource
Frequency Of Update continual
Graphic Preview Description Global Blended TPW
Graphic Preview File
Graphic Preview Type PNG
Guid gov.noaa.ncdc:C00803
Harvest Object Id 3327e933-9663-4a4a-9557-f339538a6da3
Harvest Source Id 2aed8e29-fc5b-4cde-aa66-fb1118fd705e
Harvest Source Title NOAA CSW Harvest Source
Licence For a complete description of use limitations for this dataset, refer to the producer's documentation.
Metadata Language
Metadata Type geospatial
Progress onGoing
Spatial Data Service Type
Spatial Reference System
Spatial Harvester True
Temporal Extent Begin 2013-10-01

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