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Drag-Based Model of ICME Propagation

Drag-Based Model of ICME Propagation. B. Vršnak 1 , T. Žic 1 , M. Dumbović 1 , A. Veronig 2 , M. Temmer 2 , C. Möstl 2 , T. Roll ett 2 1 Hvar Observatory, Faculty of Geodesy, Zagreb, Croatia 2 IGAM/Institute of Physics, University of Graz, Graz, Austria.

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Drag-Based Model of ICME Propagation

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  1. Drag-Based Model ofICME Propagation B. Vršnak1, T. Žic1, M. Dumbović1, A. Veronig2, M. Temmer2, C. Möstl2, T. Rollett2 1Hvar Observatory, Faculty of Geodesy, Zagreb, Croatia 2 IGAM/Institute of Physics, University of Graz, Graz, Austria This work has received funding from the European Commission FP7 ProjectCOMESEP(263252)

  2. Physical Background exchange of kinetic energy and momentum with ambient plasma air : collisions (pressure waves) solar wind : MHD waves (collisionless) a = –g(v – w)|v – w|

  3. CASE STUDIES Comparison of the modeled and observed ICME kinematics (based on STEREO A&B data)

  4. STATIST. TESTS & REAL-TIME FORECASTING Optimal values,g = 2×10-8 km-1andw= 450 km/s,have been found by minimizing the scatter of the difference between the observed and calculated transit times (O–C).

  5. ONLINE TOOL & COMESEP ALERT SYSTEM current option: http://oh.geof.unizg.hr/DBM/dbm.php improved option (under development): http://oh.geof.unizg.hr/~tomislav/DBMOH4/dbm.php

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