Modeling of coronal mass ejections with the STEREO heliospheric imagers verified with in situ observations by the Heliophysics System Observatory

0474647 - ÚFA 2018 DE eng A - Abstrakt
Möstl, C. - Isavnin, A. - Kilpua, E. K. J. - Bothmer, V. - Mrotzek, N. - Boakes, P. - Rodriguez, L. - Krupař, Vratislav - Eastwood, J. - Davies, J. - Harrison, R. - Barnes, D. - Winslow, R.
Modeling of coronal mass ejections with the STEREO heliospheric imagers verified with in situ observations by the Heliophysics System Observatory.
Geophysical Research Abstracts. Göttingen: European Geosciences Union, 2017. EGU2017-4536-1. ISSN 1607-7962.
[EGU General Assembly 2017. 23.04.2017-28.04.2017, Vienna]
Institucionální podpora: RVO:68378289
Klíčová slova: heliosphere * coronal mass ejections modeling * STEREO spacecraft * heliophysics system observatory * HELCATS
Kód oboru RIV: BL - Fyzika plazmatu a výboje v plynech
http://meetingorganizer.copernicus.org/EGU2017/EGU2017-4536-1.pdf

We present the first study to verify modeling of CMEs as observed by the heliospheric imagers on the two
STEREO spacecraft with a large scale dataset of in situ plasma and magnetic field observations from the
Heliophysics System Observatory, including MESSENGER, VEX, Wind, and the in situ measurements on the two
STEREO spacecraft.
To this end, we have established a new interplanetary CME catalog (ICMECAT) for these spacecraft by
gathering and updating individual ICME lists. In addition, we have re-calculated the in situ parameters in a
consistent way, resulting in 668 events observed between 2007-2015. We then calculated the efficacy of the
STEREO/HI instruments for predicting (in hindsight) with the SSEF30 model the arrival time and speed of CMEs
as well as hit/miss ratios. We also show how ICMECAT gives decent statistics concerning CME impacts on all of
the terrestrial planets, including Mars.
The results show some major implications for future heliospheric imagers which may be used for space
weather forecasting. Our effort should also serve as a baseline for the upcoming new era in heliospheric science
with Solar Orbiter, Solar Probe Plus, BepiColombo returning partly comparable observations in the next decade.
The presented work has received funding from the European Union Seventh Framework Programme (FP7/
2007-2013) under grant agreement No. 606692 [HELCATS].
Trvalý link: http://hdl.handle.net/11104/0271651