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Auroral Electrojet Indices Designed to Provide a Global Measure, 2.5-Minute Intervals, of Auroral Zone Magnetic Activity

The Auroral Electrojet index (AE) is designed to provide a global quantitative measure of auroral zone magnetic activity produced by enhanced ionospheric currents flowing below and within the auroral oval. Ideally, it is the total range of deviation at an instant of time from quiet day values of the horizontal magnetic field (H) around the auroral oval. The indices are derived in response to a need voiced by scientific users. These indices are computed from a network of geomagnetic observatories, some recording digitally and others as analog, which encircle the northern auroral zone. The AE computation uses horizontal magnetic field values measured at 2.5-minute intervals. AE plus the supplemental indices AL, AU and AO are included in this data file.

Cite this dataset when used as a source.

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    Distribution Formats
    • ASCII
    Distributor Distributor information not available
    No point of contact available for this dataset
    Documentation links not available.
    • DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce
    • DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce
    • publication: 1975-01-01
    Edition: First
    Dataset Progress Status Complete
    Data Update Frequency: Not planned
    Supplemental Information: World Data Center A for Solar-Terrestrial Physics. Report UAG-22, 29, 31, 33, 37, 39, 45, 47, 59, 60, 62, 64, 73, and 76.Observing station type: Geophysical Observatory. Data collection type: Network.
    Purpose: Research - Auroral Zone Magnetic Activity
    Use Limitations
    • While every effort has been made to ensure that these data are accurate and reliable within the limits of the current state of the art, NOAA cannot assume liability for any damages caused by any errors or omissions in the data.
    Time Period: 1966-01-01  to  1974-12-31
    Spatial Bounding Box Coordinates:
    N: 90.000000
    S: -90.000000
    E: 180.000000
    W: -180.000000
    Spatial Coverage Map:
    • EARTH SCIENCE > Sun-earth Interactions > Ionosphere/Magnetosphere Particles
    • EARTH SCIENCE > SOLID EARTH > Geomagnetism > Geomagnetic Indices
    • Horizontal Magnetic Field
    • Aurora
    • Auroral Electrojet Index
    Data Centers
    • 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
    • Global
    Use Constraints
    • Use Constraints: None
    Access Constraints
    • Access Constraints: No Constraints
    • Depends on the Data Set
    Lineage Statement Lineage statement not available.

    Metadata Last Modified: 2015-09-18

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