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Seasonal Variations and Global Wave Distributions in the Mars Thermosphere From MAVEN and Multisatellites Accelerometer-Derived Mass Densities
Liu, Jiandong1,2,3; Jin, Shuanggen1,2; Li, Yawen1
2019-11-01
Source PublicationJOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
ISSN2169-9380
Volume124Issue:11Pages:9315-9334
Corresponding AuthorJin, Shuanggen(sgjin@shao.ac.cn)
AbstractMartian lower thermospheric variations are complex due to internal surface dust storms and external solar activities. However, limited Martian measurement data are restricted to observe and understand its variations in the past. In this paper, multisatellite accelerometer-derived densities and the Mars Climate Database are used to investigate seasonal variations, gravity waves, and coupling effects with the internal and external inputs, including Mars Global Surveyor, Mars Reconnaissance Orbiter, Mars Odyssey, and Mars Atmosphere and Volatile EvolutioN Mission. The diurnal and seasonal structures are reconstructed by the data, and the phase of the cycles is formed by solar heating/ionizing processes. Both amplitude and phase are impacted by surface dust activities during autumn and winter, for which density increases about 1.5-3.5 times compared to spring and summer seasons. A parameterized model that includes a newly introduced dust index is proposed to well fit and reinterpret the seasonal cycles. Furthermore, the coupling process between internal atmospheric gravity waves (IAGWs) and dust activities are investigated and explained. During dust storm times/seasons, the IAGWs exhibit both narrower amplitude peaks and deposit their energy at higher altitudes relative to "clear sky" times. The IAGWs could extend their energies into higher layers beyond exobase due to a thermospheric layer expansion (i.e., density increase) during dust seasons.
DOI10.1029/2019JA026720
WOS KeywordMARTIAN ATMOSPHERE ; THERMAL TIDES ; OPTICAL DEPTH ; IN-SITU ; AEROBRAKING ; CIRCULATION ; CLIMATE ; TRENDS ; MODEL
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000505404700071
PublisherAMER GEOPHYSICAL UNION
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Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/35570
Collection中国科学院紫金山天文台
Corresponding AuthorJin, Shuanggen
Affiliation1.Nanjing Univ Informat Sci & Technol, Sch Remote Sensing & Geomat Engn, Nanjing, Peoples R China
2.Chinese Acad Sci, Shanghai Astron Observ, Key Lab Planetary Sci, Shanghai, Peoples R China
3.Univ Chinese Acad Sci, Beijing, Peoples R China
Recommended Citation
GB/T 7714
Liu, Jiandong,Jin, Shuanggen,Li, Yawen. Seasonal Variations and Global Wave Distributions in the Mars Thermosphere From MAVEN and Multisatellites Accelerometer-Derived Mass Densities[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,2019,124(11):9315-9334.
APA Liu, Jiandong,Jin, Shuanggen,&Li, Yawen.(2019).Seasonal Variations and Global Wave Distributions in the Mars Thermosphere From MAVEN and Multisatellites Accelerometer-Derived Mass Densities.JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,124(11),9315-9334.
MLA Liu, Jiandong,et al."Seasonal Variations and Global Wave Distributions in the Mars Thermosphere From MAVEN and Multisatellites Accelerometer-Derived Mass Densities".JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS 124.11(2019):9315-9334.
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