Physics
Scientific paper
May 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001agusm..sh62a01p&link_type=abstract
American Geophysical Union, Spring Meeting 2001, abstract #SH62A-01 INVITED
Physics
2102 Corotating Streams, 2111 Ejecta, Driver Gases, And Magnetic Clouds, 2162 Solar Cycle Variations (7536), 2169 Sources Of The Solar Wind, 7513 Coronal Mass Ejections
Scientific paper
Observations by SOHO over the last several years have underscored the complexity of CME structure and evolution even within the 30 Rs LASCO field of view. There is also a growing appreciation, based upon global 3D MHD simulations using hypothetical inputs, that dynamical interaction of a travelling CME with the ambient solar wind structure can have a substantial influence upon its propagation to Earth and beyond. In particular, interplanetary CME structures are subject to drastic local strengthening, weakening, and deflection, depending upon details of the interactions in transit. This factor is a major contributor to historic inconsistencies in relating single-spacecraft observations to specific coronal events. Fortunately, advances in both models and observations are poised over the next few years to afford significant improvements in understanding the Sun-Earth connection. We discuss how the utilization of more realistic input conditions should drive progress in this area, and we highlight those observational and modeling areas most needing refinement.
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