Long-term biases in geomagnetic <i>K</i> and <i>aa</i> indices
Analysis is made of the geomagnetic-activity <i>aa</i> index and its source <i>K</i>-index data from groups of ground-based observatories in Britain, and Australia, 1868.0–2009.0, solar cycles 11–23. The <i>K</i> data show persistent biases, especially for high...
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| Format: | Article |
| Language: | English |
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Copernicus Publications
2011-08-01
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| Series: | Annales Geophysicae |
| Online Access: | https://www.ann-geophys.net/29/1365/2011/angeo-29-1365-2011.pdf |