globalchange  > 气候减缓与适应
DOI: 10.1029/2018JA025543
Scopus记录号: 2-s2.0-85052801740
论文题名:
Solar Wind Interaction With the Martian Upper Atmosphere: Roles of the Cold Thermosphere and Hot Oxygen Corona
作者: Dong C.; Bougher S.W.; Ma Y.; Lee Y.; Toth G.; Nagy A.F.; Fang X.; Luhmann J.; Liemohn M.W.; Halekas J.S.; Tenishev V.; Pawlowski D.J.; Combi M.R.
刊名: Journal of Geophysical Research: Space Physics
ISSN: 21699380
出版年: 2018
卷: 123, 期:8
起始页码: 6639
结束页码: 6654
语种: 英语
英文摘要: We study roles of the thermosphere and exosphere on the Martian ionospheric structure and ion escape rates in the process of the solar wind-Mars interaction. We employ a four-species multifluid magnetohydrodynamic model to simulate the Martian ionosphere and magnetosphere. The cold thermosphere background is taken from the Mars Global Ionosphere Thermosphere Model, and the hot oxygen exosphere is adopted from the Mars exosphere Monte Carlo model—Adaptive Mesh Particle Simulator. A total of four cases with the combination of 1-D (globally averaged) and 3-D thermospheres and exospheres are studied. The ion escape rates calculated by adopting 1-D and 3-D atmospheres are similar; however, the latter are required to adequately reproduce the ionospheric observations by the Mars Atmosphere and Volatile EvolutioN mission. In addition, our simulations show that the 3-D hot oxygen corona plays an important role in preventing planetary molecular ions (O2 + and CO2 +) escaping from Mars, mainly resulting from the mass loading of the high-altitude exospheric O+ ions. The cold thermospheric oxygen atom, however, is demonstrated to be the primary neutral source for O+ ion escape during the relatively weak solar cycle 24. ©2018. American Geophysical Union. All Rights Reserved.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/113460
Appears in Collections:气候减缓与适应

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作者单位: Department of Astrophysical Sciences, Princeton University, Princeton, NJ, United States; Princeton Center for Heliophysics, Princeton Plasma Physics Laboratory, Princeton University, Princeton, NJ, United States; Department of Climate and Space Sciences and Engineering, University of Michigan, Ann Arbor, MI, United States; Department of Earth and Space Sciences, Los Angeles, CA, United States; NASA Goddard Space Flight Center, Greenbelt, MD, United States; Laboratory for Atmospheric and Space Physics, University of Colorado Boulder, Boulder, CO, United States; Space Sciences Laboratory, University of California, Berkeley, CA, United States; Department of Physics and Astronomy, University of Iowa, Iowa City, IA, United States; Department of Physics and Astronomy, Eastern Michigan University, Ypsilanti, MI, United States

Recommended Citation:
Dong C.,Bougher S.W.,Ma Y.,et al. Solar Wind Interaction With the Martian Upper Atmosphere: Roles of the Cold Thermosphere and Hot Oxygen Corona[J]. Journal of Geophysical Research: Space Physics,2018-01-01,123(8)
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