A homogeneous aa index: 2. Hemispheric asymmetries and the equinoctial variation
Paper 1 (Lockwood et al., 2018) generated annual means of a new version of the aa geomagnetic activity index which includes corrections for secular drift in the geographic coordinates of the auroral oval, thereby resolving the difference between the centennial-scale change in the northern and southe...
Main Authors: | , , , , , |
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Format: | Article |
Language: | English |
Published: |
EDP Sciences
2018-01-01
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Series: | Journal of Space Weather and Space Climate |
Subjects: | |
Online Access: | https://doi.org/10.1051/swsc/2018044 |