Geometric Localization and Polarimetric Localization: Space Weather Tools to Calculate CME Propagation Characteristics

Details Geometric Localization and Polarimetric Localization: Space Weather Tools to Calculate CME Propagation Characteristics Geometric Localization and Polarimetric Localization: Space Weather Tools to Calculate CME Propagation Characteristics

Dec 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008agufmsa51a1539p&link_type=abstract

American Geophysical Union, Fall Meeting 2008, abstract #SA51A-1539

Other

2101 Coronal Mass Ejections (7513), 2111 Ejecta, Driver Gases, And Magnetic Clouds, 2194 Instruments And Techniques, 7924 Forecasting (2722), 7999 General Or Miscellaneous

Scientific paper

The geometric localization technique [Pizzo and Biesecker, 2004] utilizes a series of lines of sight from two space-based coronagraphs to determine gross propagation characteristics of coronal mass ejections (CMEs) in three-dimensional space. The polarimetric localization technique [Moran and Davila, 2004] uses the percent polarization observed by a single coronagraph to obtain a three-dimensional reconstruction of a CME. Both techniques can be used in near-real-time within an operational space weather forecast center. When these two independent techniques are used in conjunction with each other to analyze STEREO/Secchi/COR2 beacon data, they can provide significant constraints on the three-dimensional location and velocity, including speed and direction, for any Earth-directed CME. Here, we employ these techniques to the CME of 31 December 2007 and compare results on the speed and direction of propagation for this CME.

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