SPRG Seminars

September 4, 2012:

"Sun-to-Earth Propagation of Coronal Mass Ejections "

Ying Liu, Space Science Laboratory, University of California at Berkeley

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 It has been almost 6 years since the launch of the STEREO spacecraft. A primary objective of STEREO is to characterize Sun-to-Earth propagation of coronal mass ejections (CMEs), the most spectacular eruptions in the solar corona and drivers of major space weather effects. This talk will focus on some progresses in understating CME Sun-to-Earth propagation based on merged STEREO remote-sensing and in situ observations, specifically: (1) predicting CME arrival and speed at the Earth; (2) CME interaction with the heliosphere; (3) imaging shocks in interplanetary space; and (4) CME-CME interaction. Event studies together with implications for instrumentation will be presented to demonstrate the capabilities with which the impact of a solar storm on the Earth can be predicted with small ambiguities.