Journal articles
Comparison of Global Martian Plasma Models in the Context of MAVEN Observations
Hilary Egan
1
Yingjuan Ma
2
Chuanfei Dong
3
Ronan Modolo
4
Riku Järvinen
5, 6
Stephen Bougher
7
Jasper Halekas
8
David Brain
9
James Mcfadden
10
Jack Connerney
11
David Mitchell
10
Bruce Jakosky
9
Hilary Egan 1
Mail :
Author
Yingjuan Ma 2
Author
Chuanfei Dong 3
Author
Ronan Modolo 4
Mail :
Author
Riku Järvinen 5, 6
Author
Stephen Bougher 7
Mail :
Author
Jasper Halekas 8
Author
David Brain 9
Author
1
University of Colorado [Boulder] (Boulder, Colorado 80309 - United States)
2
UCLA - University of California [Los Angeles] ( Los Angeles, Californie 90095 - United States)
- University of California (United States)
3
Princeton University (Princeton, NJ 08544 USA - United States)
4
HEPPI - LATMOS (France)
- LATMOS - Laboratoire Atmosphères, Milieux, Observations Spatiales (11 boulevard d'Alembert
Quartier des Garennes
78280 - Guyancourt - France)
- INSU - CNRS - Institut national des sciences de l'Univers : UMR8190 (INSU-CNRS 3 rue Michel-Ange, 75794 Paris Cedex 16 - France)
- CNRS - Centre National de la Recherche Scientifique : UMR8190 (France)
- UVSQ - Université de Versailles Saint-Quentin-en-Yvelines : UMR8190 (55 avenue de Paris - 78035 Versailles cedex - France)
- SU - Sorbonne Université : UMR8190 (21 rue de l’École de médecine - 75006 Paris - France)
5
FMI - Finnish Meteorological Institute (Erik Palmenin aukio 1, P.O. Box 503, 00 101 Helsinki, Finland - Finland)
6
Department of Electronics and Nanoengineering [Espoo] (Finland)
- School of Electrical Engineering [Aalto] (Finland)
- Aalto University (P.O. Box 11000, FI-00076 Aalto - Finland)
7
CLaSP - Department of Climate and Space Sciences and Engineering (University of Michigan, 2455 Hayward Street, Ann Arbor,
MI-48109-2143 - United States)
- University of Michigan [Ann Arbor] (500 Church Street Ann Arbor, MI 48109-1090 - United States)
- University of Michigan System (Michigan - United States)
8
Department of Physics and Astronomy [Ames, Iowa] (2323 Osborn Drive, Physics 0012, Ames, Iowa 50011-3160 - United States)
- ISU - Iowa State University ( Ames, Iowa 50011 - United States)
9
LASP - Laboratory for Atmospheric and Space Physics [Boulder] (1234 Innovation Drive, Boulder, CO 80303-7814 - United States)
- University of Colorado [Boulder] (Boulder, Colorado 80309 - United States)
10
SSL - Space Sciences Laboratory [Berkeley] (7 Gauss Way, Berkeley, CA 94720 - United States)
- University of California [Berkeley] (Berkeley, CA - United States)
- University of California (United States)
11
GSFC - NASA Goddard Space Flight Center (Greenbelt, MD 20771 - United States)
Abstract : Global models of the interaction of the solar wind with the Martian upper atmosphere have proved to be valuable tools for investigating both the escape to space of the Martian atmosphere and the physical processes controlling this complex interaction. The many models currently in use employ different physical assumptions, but it can be difficult to directly compare the effectiveness of the models since they are rarely run for the same input conditions. Here we present the results of a model comparison activity, where five global models (single‐fluid MHD, multi‐fluid MHD, multi‐fluid electron pressure MHD, and two hybrid models) were run for identical conditions corresponding to a single orbit of observations from the Mars Atmosphere and Volatile EvolutioN (MAVEN) spacecraft.
We find that low altitude ion densities are very similar across all models, and are comparable to MAVEN ion density measurements from periapsis. Plasma boundaries appear generally symmetric in all models and vary only slightly in extent. Despite these similarities there are clear morphological differences in ion behavior in other regions such as the tail and southern hemisphere. These differences are observable in ion escape loss maps, and are necessary to understand in order to accurately use models in aiding our understanding of the martian plasma environment.
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Journal articles
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https://hal-insu.archives-ouvertes.fr/insu-01779165
Contributor : Catherine Cardon <>
Submitted on : Thursday, April 26, 2018 - 2:26:05 PM
Last modification on : Friday, January 10, 2020 - 3:42:35 PM
Contributor : Catherine Cardon <>
Submitted on : Thursday, April 26, 2018 - 2:26:05 PM
Last modification on : Friday, January 10, 2020 - 3:42:35 PM
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Identifiers
- HAL Id : insu-01779165, version 1
- DOI : 10.1029/2017JA025068
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INSU | CNRS | UVSQ | UNIV-PARIS-SACLAY | SORBONNE-UNIVERSITE | LATMOS | SU-SCIENCES
Citation
Hilary Egan, Yingjuan Ma, Chuanfei Dong, Ronan Modolo, Riku Järvinen, et al.. Comparison of Global Martian Plasma Models in the Context of MAVEN Observations. Journal of Geophysical Research Space Physics, American Geophysical Union/Wiley, 2018, 123 (5), pp.3714-3726. ⟨10.1029/2017JA025068⟩. ⟨insu-01779165⟩
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