Journal article
CME Evolution in the Structured Heliosphere and Effects at Earth and Mars During Solar Minimum
Space weather, Vol.20(9), e2022SW003215
09/2022
DOI: 10.1029/2022SW003215
Abstract
The activity of the Sun alternates between a solar minimum and a solar maximum, the former corresponding to a period of “quieter” status of the heliosphere. During solar minimum, it is in principle more straightforward to follow eruptive events and solar wind structures from their birth at the Sun throughout their interplanetary journey. In this paper, we report analysis of the origin, evolution, and heliospheric impact of a series of solar transient events that took place during the second half of August 2018, that is, in the midst of the late declining phase of Solar Cycle 24. In particular, we focus on two successive coronal mass ejections (CMEs) and a following high-speed stream (HSS) on their way toward Earth and Mars. We find that the first CME impacted both planets, whilst the second caused a strong magnetic storm at Earth and went on to miss Mars, which nevertheless experienced space weather effects from the stream interacting region preceding the HSS. Analysis of remote-sensing and in-situ data supported by heliospheric modeling suggests that CME–HSS interaction resulted in the second CME rotating and deflecting in interplanetary space, highlighting that accurately reproducing the ambient solar wind is crucial even during “simpler” solar minimum periods. Lastly, we discuss the upstream solar wind conditions and transient structures responsible for driving space weather effects at Earth and Mars.
Details
- Title: Subtitle
- CME Evolution in the Structured Heliosphere and Effects at Earth and Mars During Solar Minimum
- Creators
- Erika Palmerio - University of California, BerkeleyChristina O Lee - University of California, BerkeleyIan G Richardson - University of Maryland, College ParkTeresa Nieves-Chinchilla - HeliophysicsLuiz F G Dos Santos - nextSourceJacob R Gruesbeck - Goddard Space Flight CenterNariaki V Nitta - Lockheed Martin (United States)M Leila Mays - HeliophysicsJasper S Halekas - University of IowaCary ZeitlinShaosui Xu - University of California, BerkeleyMats Holmström - Swedish Institute of Space PhysicsYoshifumi Futaana - Swedish Institute of Space PhysicsTamitha Mulligan - The Aerospace CorporationBenjamin J Lynch - University of California, BerkeleyJanet G Luhmann - University of California, Berkeley
- Resource Type
- Journal article
- Publication Details
- Space weather, Vol.20(9), e2022SW003215
- DOI
- 10.1029/2022SW003215
- ISSN
- 1542-7390
- eISSN
- 1542-7390
- Publisher
- American Geophysical Union
- Grant note
- DOI: 10.13039/100016465, name: Science Mission Directorate, award: NNX16AK22G, 80NSSC20K1274, 80NSSC21K0731, 80NSSC21K1325, NNH19ZDA001N‐LWS; DOI: 10.13039/100014074, name: Integrative and Collaborative Education and Research, award: ICER‐1854790
- Language
- English
- Date published
- 09/2022
- Description audience
- PUBLIC
- Academic Unit
- Physics and Astronomy
- Record Identifier
- 9984429026802771
Metrics
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