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NASA LWS Extreme Space Weather Events II 2014 Workshop

NASA LWS Extreme Space Weather Events II 2014 Workshop LASP, University of Colorado, Boulder July 09-11, 2014 Session 7: Campaign Events Summary. Three Campaign Events: March 1989, July 2000, July 2012. Speakers: Lan Jian Ying Le Gang Li Tibor Torok Dick Mewaldt. July 2000 event.

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NASA LWS Extreme Space Weather Events II 2014 Workshop

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  1. NASA LWS Extreme Space Weather Events II 2014 Workshop LASP, University of Colorado, BoulderJuly 09-11, 2014 Session 7: Campaign Events Summary

  2. Three Campaign Events: March 1989, July 2000, July 2012 • Speakers: • LanJian • Ying Le • Gang Li • TiborTorok • Dick Mewaldt

  3. July 2000 event

  4. July 2012 event Liu et al., 2014 • The event exhibited non linear interaction between consecutive CMEs via a magic recipe to form a “perfect storm” extreme event, in which: • An earlier large CME should occur at the right time in order to have a minimal deceleration of the later CMEs. It should occur neither too early nor too late. • Second, the later CMEs should be launched in quick succession. They interact as close to the Sun as possible, so their expansion would be inhibited after the eruptions. The fast transit to 1 AU would significantly reduce the time for them to expand as well.

  5. July 2012 event What is the environment that leads to such efficient particle acceleration? A special magnetic configuration leading to a two-stage eruption within a short period of time (STB, STA, SDO)

  6. 2012

  7. July 2000 event Flux rope eruption modeling

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