DOI: 10.1002/2015GL065291
论文题名: A comparison of 3-D model predictions of Mars' oxygen corona with early MAVEN IUVS observations
作者: Lee Y. ; Combi M.R. ; Tenishev V. ; Bougher S.W. ; Deighan J. ; Schneider N.M. ; McClintock W.E. ; Jakosky B.M.
刊名: Geophysical Research Letters
ISSN: 0094-8523
EISSN: 1944-8254
出版年: 2015
卷: 42, 期: 21 起始页码: 9015
结束页码: 9022
语种: 英语
英文关键词: 3-D simulation
; coronal scan
; exosphere
; Hot O corona
; MANEN IUVS observation
; Mars
Scopus关键词: Carbon dioxide
; Dissociation
; Ionosphere
; Luminance
; 3D simulations
; Coronal scan
; Exosphere
; Hot O corona
; MANEN IUVS observation
; Mars
; Forecasting
; atmospheric structure
; comparative study
; corona
; ionosphere
; Mars
; observational method
; oxygen
; prediction
; spacecraft
; spatial variation
; thermosphere
; three-dimensional modeling
; ultraviolet radiation
英文摘要: We have compared our 3-D hot O corona model predictions with the OI 130.4 nm emission detected by Imaging Ultraviolet Spectrograph/Mars Atmosphere and Volatile EvolutioN (IUVS/MAVEN) based completely on our best pre-MAVEN understanding of the 3-D structure of the thermosphere and ionosphere. The model was simulated appropriately for the observational conditions. In addition to dissociative recombination (DR) of O2+, DR of CO2+ is also considered as an important hot O source. The model predictions showed excellent agreement with the transition altitude, the observed altitude variation of density, and the spatial variation of the corona with respect to the Mars-Sun geometry. While previous models predicted escape rates covering a range of nearly 100, the brightness of the modeled hot O densities is a factor of ~1.5 lower than the observations. We discuss possible changes to the model that could come from further analysis of MAVEN measurements and that might close the gap between the modeled and observed brightness. © 2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84954450622&doi=10.1002%2f2015GL065291&partnerID=40&md5=30e136e38ce5821ab1b4a32dc157777c
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8139
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: Department of Atmospheric Oceanic and Space Sciences, University of Michigan, Ann Arbor, MI, United States
Recommended Citation:
Lee Y.,Combi M.R.,Tenishev V.,et al. A comparison of 3-D model predictions of Mars' oxygen corona with early MAVEN IUVS observations[J]. Geophysical Research Letters,2015-01-01,42(21).