EGU General Assembly 2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

Drag-based deformation of a multi-point CME event

Tanja Amerstorfer1, Maike Bauer1, Christian Möstl1, Luke Barnard2, Pete Riley3, Andreas J. Weiss1, and Martin A. Reiss1
Tanja Amerstorfer et al.
  • 1Space Research Institute, Austrian Academy of Sciences, Graz, Austria (
  • 2Department of Meteorology, University of Reading, Reading, UK
  • 3Predictive Science Inc., San Diego, CA, USA

We present first results of a case study on a CME from October 2021 that was in situ detected by BepiColombo, Solar Orbiter, DSCOVR and STEREO-A, whose Heliospheric Imagers (HI) additionally observed the event remotely. The latter observations are used to model the evolution of the CME through the inner heliosphere using the CME propagation model ELlipse Evolution based on HI (ELEvoHI). ELEvoHI assumes a drag-based interaction of the CME-sheath with the solar wind and allows it to deform according to local drag regimes. The ambient solar wind is provided by the time-dependent HelioMAS/HUXt model. Using the arrivals at the four different spacecraft we are able to assess the ability of ELEvoHI to model the evolution of the shape of this CME.

How to cite: Amerstorfer, T., Bauer, M., Möstl, C., Barnard, L., Riley, P., Weiss, A. J., and Reiss, M. A.: Drag-based deformation of a multi-point CME event, EGU General Assembly 2022, Vienna, Austria, 23–27 May 2022, EGU22-9162,, 2022.

Comments on the display material

to access the discussion