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Comprehensive Analysis of the Counter Equatorial Electrojet: Average Properties as Deduced From CHAMP Observations
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2018
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Source: Journal of Geophysical Research: Space Physics, 123(6), 5159-5181
[PDF-2.49 MB]
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Journal Title:Journal of Geophysical Research: Space Physics
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Description:Ten years of geomagnetic field observations by the CHAMP satellite are used for a systematic investigation of the counter equatorial electrojet (CEJ). For the first time a comprehensive characterization of CEJ is presented. CEJs occur preferably during early morning, and their occurrence rate is down to 4% atnoon. The CEJ occurrence rate shows a clear annual variation with a peak around July –August and a secondary peak in January. The late summer peak is related to the effect of meteor dust ablation. The CEJ amplitude is closely controlled by magnetic activity, showing a good correlation with the a Pindex. Nonmigrating solar tides are the main reason for longitudinal patterns of occurrence rate. The most
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Source:Journal of Geophysical Research: Space Physics, 123(6), 5159-5181
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ISSN:2169-9380
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