NESDIS Blended Total Precipitable Water (TPW) Products

Blended TPW

browse graphicGlobal Blended TPW
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.
  • Cite this dataset when used as a source.
  • gov.noaa.class:BLENDHYDRO
  • gov.noaa.ncdc:C00803
Order Data
Distribution Formats
  • HDF-EOS
  • PNG
Distributor Customer Engagement Branch
DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
+1 828-271-4800
class.help@noaa.gov
Dataset Point of Contact Customer Engagement Branch
DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
+1 828-271-4800
class.help@noaa.gov
Time Period 2013-10-01 to Present
Spatial Bounding Box Coordinates
N: 71.0
S: -71.0
E: 180.0
W: -180.0
Spatial Coverage Map
Dataset Information
General Documentation
Processing Documents
    Publication Dates
    • publication: 2009-09-30
    Data Presentation Form Digital image
    Dataset Progress Status Ongoing - data is continually being updated
    Data Update Frequency Continual
    Purpose This dataset provides quality measurements of hydrometeorological variables from multiple instruments and platforms.
    Use Limitations
    • For a complete description of use limitations for this dataset, refer to the producer's documentation.
    Dataset Citation
    • Cite this dataset when used as a source.
    Cited Authors
    • DOC/NOAA/NESDIS/OSPO > Office of Satellite and Product Operations, NESDIS, NOAA, U.S. Department of Commerce
    • DOC/NOAA/NESDIS/STAR > Center for Satellite Applications and Research, NESDIS, NOAA, U.S. Department of Commerce
    Originators
    • DOC/NOAA/NESDIS/OSPO > Office of Satellite and Product Operations, NESDIS, NOAA, U.S. Department of Commerce
    Principal Investigators
    • DOC/NOAA/NESDIS/STAR > Center for Satellite Applications and Research, NESDIS, NOAA, U.S. Department of Commerce
    Publishers
    • DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
    Theme keywords Global Change Master Directory (GCMD) Science Keywords
    • Earth Science > Atmosphere > Atmospheric Water Vapor > Water Vapor Indicators > Total Precipitable Water
    Data Center keywords Global Change Master Directory (GCMD) Data Center Keywords
    • DOC/NOAA/NESDIS/NCDC > National Climatic Data Center, NESDIS, NOAA, U.S. Department of Commerce
    • DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
    • DOC/NOAA/NESDIS/OSPO > Office of Satellite and Product Operations, NESDIS, NOAA, U.S. Department of Commerce
    • DOC/NOAA/NESDIS/STAR > Center for Satellite Applications and Research, NESDIS, NOAA, U.S. Department of Commerce
    Platform keywords Global Change Master Directory (GCMD) Platform Keywords
    • SUOMI-NPP > Suomi National Polar-orbiting Partnership
    • NOAA-18 > National Oceanic & Atmospheric Administration-18
    • NOAA-19 > National Oceanic & Atmospheric Administration-19
    • METOP-A > Meteorological Operational Satellite - A
    • METOP-B > Meteorological Operational Satellite - B
    • DMSP 5D-3/F18 > Defense Meteorological Satellite Program-F18
    • DMSP 5D-3/F19 > Defense Meteorological Satellite Program-F19
    • GOES-13 > Geostationary Operational Environmental Satellite 13
    • GOES-15 > Geostationary Operational Environmental Satellite 15
    • GPS/MET
    Instrument keywords Global Change Master Directory (GCMD) Instrument Keywords
    • ATMS > Advanced Technology Microwave Sounder
    • AMSU-A > Advanced Microwave Sounding Unit-A
    • MHS > Microwave Humidity Sounder
    • SSMIS > Special Sensor Microwave Imager/Sounder
    • GOES N-P SOUNDER
    • GPS RECEIVERS
    Place keywords Global Change Master Directory (GCMD) Location Keywords
    • Geographic Region > Global Ocean
    Project keywords Global Change Master Directory (GCMD) Project Keywords
    • NDE > NPP (National Polar-orbiting Partnership) Data Exploitation
    Data Resolution keywords Global Change Master Directory (GCMD) Horizontal Data Resolution Keywords
    • 10 km - < 50 km or approximately .09 degree - < .5 degree
    Use Constraints
    • Cite this dataset when used as a source.
    • 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.
    Access Constraints
    • 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.
    Fees
    • In most cases, electronic downloads of the data are free, however fees may apply for data certifications, copies of analog materials, and data distribution on physical media.
    Lineage information for: repository
    Processing Steps
    • 2015-04-22T00:00:00 - NOAA created the National Centers for Environmental Information (NCEI) by merging NOAA's National Climatic Data Center (NCDC), National Geophysical Data Center (NGDC), and National Oceanographic Data Center (NODC), including the National Coastal Data Development Center (NCDDC), per the Consolidated and Further Continuing Appropriations Act, 2015, Public Law 113-235. NCEI launched publicly on April 22, 2015.
    Last Modified: 2018-05-25
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