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    • Auroral Electrojet Index Designed to Provide a Global Measure, Hourly Intervals, of Auroral Zone Magnetic Activity

    Metadata Updated: September 16, 2022

    The Auroral Electrojet (AE) index 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 hourly AE, AL, AU, and AO indices were derived from hourly scaled values of magnetic horizontal intensity or the means of indices measured at finer sample increments (2.5 or 1.0-minute). These indices are derived from a network of geomagnetic observations that encircle the northern auroral oval.

    Access & Use Information

    License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

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    Dates

    Metadata Date September 18, 2015
    Metadata Created Date September 16, 2022
    Metadata Updated Date September 16, 2022
    Reference Date(s) January 1, 1965 (publication)
    Frequency Of Update irregular

    Metadata Source

    Harvested from NGDC STP Indices

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Date September 18, 2015
    Metadata Created Date September 16, 2022
    Metadata Updated Date September 16, 2022
    Reference Date(s) January 1, 1965 (publication)
    Responsible Party DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce (Point of Contact)
    Contact Email
    Guid gov.noaa.ngdc.stp.indices:G00115
    Access Constraints Use Constraints: None, Access Constraints: No Constraints
    Bbox East Long 180.000000
    Bbox North Lat 90.000000
    Bbox South Lat -90.000000
    Bbox West Long -180.000000
    Coupled Resource
    Frequency Of Update irregular
    Harvest Object Id 45beadf0-5d5d-466e-a565-46ea19b99db5
    Harvest Source Id 8fcc91fb-3399-4b06-abea-b4dadb7df9b7
    Harvest Source Title NGDC STP Indices
    Licence 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.
    Metadata Language eng; USA
    Metadata Type geospatial
    Old Spatial {"type": "Polygon", "coordinates": [[[-180.0, -90.0], [180.0, -90.0], [180.0, 90.0], [-180.0, 90.0], [-180.0, -90.0]]]}
    Progress underDevelopment
    Spatial Data Service Type
    Spatial Reference System
    Spatial Harvester True
    Temporal Extent Begin 1957-07-01

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