NCEI (formerly NGDC)
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Scaled Data from Digital Ionograms

All the data contributed come from 1957 through 1990. They have been digitized, reformatted, converted to universal time (the software also can display the data in local meridian time), and passed through quality control filters.
Cite this dataset when used as a source.
Other Access Online access information not available.
Distribution Formats Format not available
    Distributor Distributor information not available
    Documentation links not available.
    Date(s)
    • publication: 2012-01-01
    Dataset Progress Status Complete
    Data Update Frequency: Not planned
    Purpose: To provide a useful parameterization of digital Ionospheric soundings
    Originator(s)
    • DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce
    Publisher(s)
    • DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
    Time Period: 1920-01-01 to 2013-01-01
    Spatial Bounding Box Coordinates:
    N: 90.000000
    S: -90.000000
    E: 180.000000
    W: -180.000000
    Spatial Coverage Map:
    Theme keywords NASA/GCMD Earth Science Keywords
    • Space Physics, Ionosphere, Atmosphere, Indices, Communications, Remote Sensing
    Data Center keywords Global Change Master Directory (GCMD) Data Center Keywords
    • DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
    • DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce
    Use Constraints
    • Use Constraints: None
    Access Constraints
    • Access Constraints: No Constraints
    Fees Fee information not available.
    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: 2015-09-18
    For questions about the information on this page, please email: Justin.Mabie@noaa.gov