Understanding Interplanetary Shock Dynamics in the Inner Heliosphere with New Observations and Modeling Techniques

Details Understanding Interplanetary Shock Dynamics in the Inner Heliosphere with New Observations and Modeling Techniques Understanding Interplanetary Shock Dynamics in the Inner Heliosphere with New Observations and Modeling Techniques

Dec 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010agufmsh23b1850s&link_type=abstract

American Geophysical Union, Fall Meeting 2010, abstract #SH23B-1850

Astronomy and Astrophysics

Astrophysics

[7513] Solar Physics, Astrophysics, And Astronomy / Coronal Mass Ejections, [7924] Space Weather / Forecasting

Scientific paper

This is a status report of our work predicting interplanetary shock location and strength throughout the inner heliosphere. Coronal mass ejection (CME) shocks accelerate energetic particles, and CME sheaths and ejecta are the primary cause of severe geomagnetic storms. We have evaluated an empirical prediction technique against ENLIL model runs produced at the Community Coordinated Modelling Center (CCMC). The prediction method is a technique based on the kilometric wavelength interplanetary Type II radio emissions measured by Wind/WAVES and described by Cremades, et al., 2007 (hereafter called "kmTII" technique). For a subset of Earth-directed CMEs that were also observed by SOHO LASCO, we have produced multiple ENLIL+cone model predictions of the location of the shock and compared the predicted arrival of at Earth with both the actual arrival and the kmTII prediction. We will report the preliminary results of the comparison in this poster.

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