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Observed Dawn and Twilight Pressure Sudden Peaks in the Global Martian Surface and Possible Relationships With Atmospheric Tides

文献类型：期刊论文

作者Yang, Chengyun1,2; Sun, Cong2; Wu, Zhaopeng1,3; Li, Tao1,2
刊名JOURNAL OF GEOPHYSICAL RESEARCH-PLANETS
出版日期2023-07-01
卷号128期号:7页码:14
关键词surface pressure fluctuation atmospheric tide InSight LMD simulation mass flux
ISSN号2169-9097
DOI10.1029/2022JE007650
英文摘要Multilanders and rovers on Mars have observed the diurnal variation in surface pressure with two significant peaks at dawn and twilight (around 8:00 a.m. and 8:00 p.m.) at different locations near the equinox. The Dynamic Meteorology Laboratory Martian General Circulation Model (GCM) simulates similar phase-locked surface pressure fluctuations. The surface pressure peaks at a certain local time occur at most mid- and low-latitude locations, as GCM simulations suggested. By reconstructing the surface pressure variation from the horizontal mass flux obtained in the GCM simulations, we find that the pressure fluctuations are due to the diurnal variation in the horizontal wind divergence and convergence in the Martian tropical troposphere. The diurnal variation in surface pressure corresponds to the migrating diurnal tidal wind, with the enhanced convergence due to the overlap of the 4-hr and 6-hr tides before 8:00 a.m. and 8:00 p.m. Although the amplitudes of the 4-hr and 6-hr tides are smaller than those of diurnal tides, the convergences/divergences caused by the 4-hr/6-hr tidal winds at different altitudes are in phase and added up together to create a mass flux comparable to that induced by diurnal/semidiurnal components and lead to rapid pressure fluctuations. The 4-hr/6-hr tidal amplitudes and the two pressure peaks at dawn and twilight are the strongest near the equinox.
WOS关键词MARS-PATHFINDER ; SEASONAL-VARIATION ; MIDDLE ATMOSPHERE ; DIURNAL TIDE ; GALE CRATER ; METEOROLOGY ; VARIABILITY ; VIKING-1 ; IMPACT ; CYCLE
资助项目B-type Strategic Priority Program of the Chinese Academy of Sciences[XDB41000000] ; National Natural Science Foundation of China[42275133] ; National Natural Science Foundation of China[42130203] ; National Natural Science Foundation of China[42241115] ; National Natural Science Foundation of China[41874180] ; National Natural Science Foundation of China[41974175] ; National Natural Science Foundation of China[41831071] ; China's National Space Administration[D020105]
WOS研究方向Geochemistry & Geophysics
语种英语
WOS记录号WOS:001031394400001
出版者AMER GEOPHYSICAL UNION
资助机构B-type Strategic Priority Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; China's National Space Administration ; B-type Strategic Priority Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; China's National Space Administration ; B-type Strategic Priority Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; China's National Space Administration ; B-type Strategic Priority Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; China's National Space Administration
源URL[http://ir.iggcas.ac.cn/handle/132A11/110739]  
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Li, Tao
作者单位1.Univ Sci & Technol China, CAS Ctr Excellence Comparat Planetol, Hefei, Peoples R China
2.Univ Sci & Technol China, Sch Earth & Space Sci, CAS Key Lab Geospace Environm, Hefei, Peoples R China
3.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Earth & Planetary Phys, Be?ing, Peoples R China
推荐引用方式
GB/T 7714		 Yang, Chengyun,Sun, Cong,Wu, Zhaopeng,et al. Observed Dawn and Twilight Pressure Sudden Peaks in the Global Martian Surface and Possible Relationships With Atmospheric Tides[J]. JOURNAL OF GEOPHYSICAL RESEARCH-PLANETS,2023,128(7):14.
APA Yang, Chengyun,Sun, Cong,Wu, Zhaopeng,&Li, Tao.(2023).Observed Dawn and Twilight Pressure Sudden Peaks in the Global Martian Surface and Possible Relationships With Atmospheric Tides.JOURNAL OF GEOPHYSICAL RESEARCH-PLANETS,128(7),14.
MLA Yang, Chengyun,et al."Observed Dawn and Twilight Pressure Sudden Peaks in the Global Martian Surface and Possible Relationships With Atmospheric Tides".JOURNAL OF GEOPHYSICAL RESEARCH-PLANETS 128.7(2023):14.

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来源：地质与地球物理研究所

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