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  2. 地质与地球物理研究所
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  4. 中国科学院地球与行星物理重点实验室
Evaluation for effects of variable Martian upper atmosphere on ionospheric peak electron density based on the MGS RO observation

文献类型：期刊论文

作者Chen, Yiding1,2,3,4,6; Liu, Libo2,3,5,6; Le, Huijun2,3,5,6; Zhang, Hui2,3,5,6; Zhang, Ruilong2,3,5,6
刊名ICARUS
出版日期2023-02-01
卷号391页码:11
ISSN号0019-1035
关键词Mars Ionospheres Peak electron density Thermospheric scale height
DOI10.1016/j.icarus.2022.115364
英文摘要The Martian ionospheric peak is dominated by photochemical processes at dayside. Its primary variations can be well described by the Chapman theory; nevertheless, deviation still exists between observation and the theory. Some factors may be responsible for that deviation, in which the variable upper atmosphere is an important one. Ionospheric radio occultation (RO) measurement can be used to investigate the effect of the upper atmosphere on the Martian ionosphere, since concurrent variations of the ionospheric peak and the neutral scale height (H-n) can be estimated from RO electron density profiles. In this study, H-n was estimated from the Mars Global Surveyor (MGS) RO observation to quantitatively evaluate the effect of the upper atmosphere on the variability of the peak electron density of the M-2 layer (NmM2). That effect manifests in the abilities of solar zenith angle functions for describing NmM2 variability and in the NmM2 deviation from the Chapman theory. Compared with the Chapman function, the simple cosine function is sufficiently accurate for describing dayside NmM2 variation owing to the cold Martian upper atmosphere that consists of heavier molecules, which weakens the spherical effect of plan-etary atmosphere. Hn variations, especially the longitudinal variation associated with non-migrating tides, are important factors responsible for the NmM2 deviation from the Chapman theory. Statistically, they can cause similar to 1.4% average deviation for the condition of the MGS RO measurement. An effective modification method based on available Hn was correspondingly suggested to promote the accuracy of NmM2 estimation based on the Chapman theory. It is notable that Hn variations do not show evident contribution to NmM2 deviation from the Chapman theory in the southern hemisphere, where the stronger crustal magnetic fields likely have dominant contribution to the NmM2 deviation as compared with Hn variations.
WOS关键词MARS GLOBAL SURVEYOR ; SOLAR EUV ; EMPIRICAL-MODEL ; FLUX ; THERMOSPHERE ; VARIABILITY ; PROFILES ; MAVEN
资助项目Strategic Priority Research Program of Chinese Academy of Sciences[XDB 41000000] ; National Natural Science Foundation of China[41922029] ; National Natural Science Foundation of China[42030202] ; Youth Innovation Promotion Association, CAS[Y202021]
WOS研究方向Astronomy & Astrophysics
语种英语
出版者ACADEMIC PRESS INC ELSEVIER SCIENCE
WOS记录号WOS:000895776200002
资助机构Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Youth Innovation Promotion Association, CAS ; Youth Innovation Promotion Association, CAS ; Youth Innovation Promotion Association, CAS ; Youth Innovation Promotion Association, CAS ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Youth Innovation Promotion Association, CAS ; Youth Innovation Promotion Association, CAS ; Youth Innovation Promotion Association, CAS ; Youth Innovation Promotion Association, CAS ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Youth Innovation Promotion Association, CAS ; Youth Innovation Promotion Association, CAS ; Youth Innovation Promotion Association, CAS ; Youth Innovation Promotion Association, CAS ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Youth Innovation Promotion Association, CAS ; Youth Innovation Promotion Association, CAS ; Youth Innovation Promotion Association, CAS ; Youth Innovation Promotion Association, CAS
源URL[http://ir.iggcas.ac.cn/handle/132A11/106956]  
专题地质与地球物理研究所_中国科学院地球与行星物理重点实验室
通讯作者Chen, Yiding
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, 19 Beitucheng Western Rd, Beijing 100029, Peoples R China
2.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Innovat Acad Earth Sci, Beijing 100029, Peoples R China
4.Chinese Acad Sci, Inst Geol & Geophys, Beijing Natl Observ Space Environm, Beijing 100029, Peoples R China
5.Chinese Acad Sci, Inst Geol & Geophys, Heilongjiang Mohe Observ Geophys, Beijing 100029, Peoples R China
6.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Earth & Planetary Phys, Beijing 100029, Peoples R China
推荐引用方式
GB/T 7714		 Chen, Yiding,Liu, Libo,Le, Huijun,et al. Evaluation for effects of variable Martian upper atmosphere on ionospheric peak electron density based on the MGS RO observation[J]. ICARUS,2023,391:11.
APA Chen, Yiding,Liu, Libo,Le, Huijun,Zhang, Hui,&Zhang, Ruilong.(2023).Evaluation for effects of variable Martian upper atmosphere on ionospheric peak electron density based on the MGS RO observation.ICARUS,391,11.
MLA Chen, Yiding,et al."Evaluation for effects of variable Martian upper atmosphere on ionospheric peak electron density based on the MGS RO observation".ICARUS 391(2023):11.

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来源：地质与地球物理研究所

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