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  • 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.

    Access & Use Information

    License: U.S. Government Work

    Downloads & Resources

    Dates

    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 https://www1.ncdc.noaa.gov/pub/data/metadata/images/C00803_TPW.png
    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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