ICMEs' evolution and interaction from Sun to the heliosphere during both solar cycle minimum and maximum phases

Details ICMEs' evolution and interaction from Sun to the heliosphere during both solar cycle minimum and maximum phases ICMEs' evolution and interaction from Sun to the heliosphere during both solar cycle minimum and maximum phases

Dec 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006agufmsa53a1355w&link_type=abstract

American Geophysical Union, Fall Meeting 2006, abstract #SA53A-1355

Other

2101 Coronal Mass Ejections (7513), 2139 Interplanetary Shocks, 7900 Space Weather, 7924 Forecasting (2722), 7959 Models

Scientific paper

Interplanetary coronal mass ejections (ICMEs), and their shocks, play an important role in situations involving the occurrence of geomagnetic storms, SEPs, and ESPs. Prediction of an ICME's arrival time at Earth, Mars, and elsewhere in the heliosphere becomes an important issue for space weather forecasting. In this study, a global, three-dimensional, time-dependent, hybrid model is used to investigate the ICMEs' propagation into a non-uniform solar wind medium. For example, we demonstrate the interaction between ICMEs; interaction between ICMEs and the heliosphere plasma/current sheet (HPS/HCS); and corotating interaction regions (CIRs). We will present simulation results while ICMEs were occurring during the period for both solar minimum and maximum. For solar minimum, we will present an event which occurred in May 12, 1997. For solar maximum, we will present several major events during the famous epoch of Halloween 2003. The results of both May 1997 and Halloween 2003 events show the deformation of ICMEs while they were interacting with HPS/HCS and CIRs as well as the effect of background solar speed on the ICME's arrival time at 1 AU. In addition, the result of Halloween 2003 also shows the compound case of ICMEs' overtaking one another.

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