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Auroral Electrojet Index Designed to Provide a Global Measure, l-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. These indices are computed from a network of geomagnetic observations, some recording digitally and others as analog, which encircle the northern auroral zone. The AE computation uses horizontal magnetic field measured at 1-minute intervals. AE plus the supplemental indices AL, AU, and AO are contained in this data file. For earlier years, the AE indices were derived at 2.5 minutes. Also, hourly mean indices are calculated.

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  • 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: 1976-01-01
Edition: First
Dataset Progress Status Under development
Data Update Frequency: Irregular
Supplemental Information: World Data Center A for Solar-Terrestrial Physics. Report UAG-29, 31, 33, 37, 39, 45, 47, 59, 60, 62, 64, 73, and 76.Observing station type: Geophysical Observatory. Data collection type: Network. ISSN 0579-7144 UAG-73 "Auroral Electrojet Magnetic Activity Indices (AE) for Jan-Jun 1975" ISSN 0579-7144 UAG-76 "Auroral Electrojet Magnetic Activity Indices (AE) FOR Jul-Dec 1975"
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: 1975-01-01  to  Present
Spatial Bounding Box Coordinates:
N: 90.00
S: -90.00
E: 180.00
W: -180.00
Spatial Coverage Map:
  • EARTH SCIENCE > SOLID EARTH > Geomagnetism > Geomagnetic Indices
  • Geomagnetism
  • Indices, AE
  • Space Physics > Magnetospheric Science
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
  • Down loadable for free
Lineage Statement Lineage statement not available.

Metadata Last Modified: 2015-09-18

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