Space Climate 7 Meeting Abstract
Long-term Variability of Solar Eruptive Events
Nat Gopalswamy (NASA Goddard Space Flight Center)
The impact of solar eruptions on Earth was first recognized during the Carrington storm of October 2, 1859. However, the details of how solar eruptions result in geomagnetic storms were worked out only in the space age, especially after the discovery of coronal mass ejections (CMEs) in white light. This is also the case with the aspect of space weather, viz., solar energetic particle radiation, discovered in the 1940s. Knowledge on CMEs has been accumulated over the past 5 decades, with a rapid expansion after the advent of the SOHO mission. In this paper, we summarize the results on CMEs and their space weather consequences that have been obtained over the past two solar cycles. We also discuss information on eruptive solar eruptive events over longer periods of time based on historical events.
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