Auroral Electrojet Index Designed to Provide a Global Measure, l-minute Intervals, of Auroral Zone Magnetic Activity

Metadata Updated: November 12, 2020

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.

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 November 12, 2020
Metadata Updated Date November 12, 2020
Reference Date(s) January 1, 1976 (publication)
Frequency Of Update irregular

Metadata Source

Harvested from NGDC STP Indices

Additional Metadata

Resource Type Dataset
Metadata Date September 18, 2015
Metadata Created Date November 12, 2020
Metadata Updated Date November 12, 2020
Reference Date(s) January 1, 1976 (publication)
Responsible Party Unknown
Contact Email
Guid gov.noaa.ngdc.stp.indices:G00114
Access Constraints Use Constraints: None, Access Constraints: No Constraints
Bbox East Long 180.00
Bbox North Lat 90.00
Bbox South Lat -90.00
Bbox West Long -180.00
Coupled Resource
Frequency Of Update irregular
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
Progress underDevelopment
Spatial Data Service Type
Spatial Reference System
Spatial Harvester True
Temporal Extent Begin 1975-01-01

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