Department of Climate and Space Sciences and Engineering in the College of Engineering at the University of Michigan

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The Sun Erupts from its Lengthy Slumber!

Posted: April 8, 2010

The Sun Erupts from its Lengthy Slumber!

ANN ARBOR, Mich. (U-M SHRG) — It’s been about 3 years since the last extremely hot interplanetary coronal mass ejection (ICME) was observed by the Advanced Composition Explorer (ACE)! In fact, for a while, many people believed that the latest “unusual” solar minimum might continue on for a much longer period than expected. But, things are looking up on the Sun: Coronal Mass Ejections (CMEs)

In one of the first and most violent solar eruptions since the Sun’s recent ultra-low activity, a CME left the Sun at April 3rd and lit up space weather alarms at ACE and on Earth. This ICME arrived on April 5th, 2010 at the Earth, sparking geomagnetic storms that produced impressive Aurora Borealis. The figure above shows …

Full story at http://solar-heliospheric.engin.umich.edu/

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