Spatio-Temporal Analysis of Dust Storm Activity in Chryse Planitia Using MGS-MOC Observations from Mars Years 24–28

Dust storms, observed in all seasons, are among the most momentous of Mars’ atmospheric activities. The Entry–Descent–Landing (EDL) activity of a Martian landing mission is influenced by local atmospheric conditions, especially the probability of dust storm activity. Chryse Planitia, featuring many...

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Autores principales:	Bo Li, Zongyu Yue, Shaojie Qu, Peiwen Yao, Xiaohui Fu, Zongcheng Ling, Shengbo Chen
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	Chryse Planitia dust storm activity EOF analysis spatio-temporal analysis Mars landing missions Elementary particle physics QC793-793.5
Acceso en línea:	https://doaj.org/article/de96f8bf16004bd3a66862578b42e8d0
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spelling	oai:doaj.org-article:de96f8bf16004bd3a66862578b42e8d02021-11-25T19:09:45ZSpatio-Temporal Analysis of Dust Storm Activity in Chryse Planitia Using MGS-MOC Observations from Mars Years 24–2810.3390/universe71104332218-1997https://doaj.org/article/de96f8bf16004bd3a66862578b42e8d02021-11-01T00:00:00Zhttps://www.mdpi.com/2218-1997/7/11/433https://doaj.org/toc/2218-1997Dust storms, observed in all seasons, are among the most momentous of Mars’ atmospheric activities. The Entry–Descent–Landing (EDL) activity of a Martian landing mission is influenced by local atmospheric conditions, especially the probability of dust storm activity. Chryse Planitia, featuring many of the largest and most prominent outflow channels and possible mud volcanoes, is an important target site for current and future Mars landing missions. It is of great significance to understand that a Mars landing probe may encounter a dust storm situation during EDL season in the Chryse Planitia. In this study, based on four Martian years, Mars Orbiter Camera (MOC) Mars Daily Global Maps (MDGMs), 1172 dust storms were identified within Chryse’s 1600 km-radius ring. Secondly, the daily mean dust storm probability was calculated, binned by 1° of solar longitude in the Chryse landing area. The two active periods of dust storm activity are Ls = 177–239° and Ls = 288–4°, with an average daily mean dust storm probability of 9.5% and 4.1%. Dust storm activity frequency is closely interrelated with the seasonal ebb and flow of the north polar ice cap; consequently, most dust storms occur in either the cap’s growth or recession phase. We divided the Chryse landing area into square grids of 0.5° and computed the average probability of dust storm occurrence in each grid, which ranged from 0.19% to 2.42%, with an average of 1.22%. The dust storm activity probability in space was also inhomogeneous—low in the west and south but high in the east and north—which was mainly affected by the origin and the path of dust storm sequences. Based on empirical orthogonal function (EOF) analysis of storms in the Chryse area, 40.5% are cap-edge storms in the northern hemisphere. Finally, we concluded that the preferred time of a Mars landing mission is Ls = 18–65° in the Chryse Planitia, and three preferred landing areas were selected with low dust storm probability.Bo LiZongyu YueShaojie QuPeiwen YaoXiaohui FuZongcheng LingShengbo ChenMDPI AGarticleChryse Planitiadust storm activityEOF analysisspatio-temporal analysisMars landing missionsElementary particle physicsQC793-793.5ENUniverse, Vol 7, Iss 433, p 433 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Chryse Planitia dust storm activity EOF analysis spatio-temporal analysis Mars landing missions Elementary particle physics QC793-793.5
spellingShingle	Chryse Planitia dust storm activity EOF analysis spatio-temporal analysis Mars landing missions Elementary particle physics QC793-793.5 Bo Li Zongyu Yue Shaojie Qu Peiwen Yao Xiaohui Fu Zongcheng Ling Shengbo Chen Spatio-Temporal Analysis of Dust Storm Activity in Chryse Planitia Using MGS-MOC Observations from Mars Years 24–28
description	Dust storms, observed in all seasons, are among the most momentous of Mars’ atmospheric activities. The Entry–Descent–Landing (EDL) activity of a Martian landing mission is influenced by local atmospheric conditions, especially the probability of dust storm activity. Chryse Planitia, featuring many of the largest and most prominent outflow channels and possible mud volcanoes, is an important target site for current and future Mars landing missions. It is of great significance to understand that a Mars landing probe may encounter a dust storm situation during EDL season in the Chryse Planitia. In this study, based on four Martian years, Mars Orbiter Camera (MOC) Mars Daily Global Maps (MDGMs), 1172 dust storms were identified within Chryse’s 1600 km-radius ring. Secondly, the daily mean dust storm probability was calculated, binned by 1° of solar longitude in the Chryse landing area. The two active periods of dust storm activity are Ls = 177–239° and Ls = 288–4°, with an average daily mean dust storm probability of 9.5% and 4.1%. Dust storm activity frequency is closely interrelated with the seasonal ebb and flow of the north polar ice cap; consequently, most dust storms occur in either the cap’s growth or recession phase. We divided the Chryse landing area into square grids of 0.5° and computed the average probability of dust storm occurrence in each grid, which ranged from 0.19% to 2.42%, with an average of 1.22%. The dust storm activity probability in space was also inhomogeneous—low in the west and south but high in the east and north—which was mainly affected by the origin and the path of dust storm sequences. Based on empirical orthogonal function (EOF) analysis of storms in the Chryse area, 40.5% are cap-edge storms in the northern hemisphere. Finally, we concluded that the preferred time of a Mars landing mission is Ls = 18–65° in the Chryse Planitia, and three preferred landing areas were selected with low dust storm probability.
format	article
author	Bo Li Zongyu Yue Shaojie Qu Peiwen Yao Xiaohui Fu Zongcheng Ling Shengbo Chen
author_facet	Bo Li Zongyu Yue Shaojie Qu Peiwen Yao Xiaohui Fu Zongcheng Ling Shengbo Chen
author_sort	Bo Li
title	Spatio-Temporal Analysis of Dust Storm Activity in Chryse Planitia Using MGS-MOC Observations from Mars Years 24–28
title_short	Spatio-Temporal Analysis of Dust Storm Activity in Chryse Planitia Using MGS-MOC Observations from Mars Years 24–28
title_full	Spatio-Temporal Analysis of Dust Storm Activity in Chryse Planitia Using MGS-MOC Observations from Mars Years 24–28
title_fullStr	Spatio-Temporal Analysis of Dust Storm Activity in Chryse Planitia Using MGS-MOC Observations from Mars Years 24–28
title_full_unstemmed	Spatio-Temporal Analysis of Dust Storm Activity in Chryse Planitia Using MGS-MOC Observations from Mars Years 24–28
title_sort	spatio-temporal analysis of dust storm activity in chryse planitia using mgs-moc observations from mars years 24–28
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/de96f8bf16004bd3a66862578b42e8d0
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_version_	1718410249013035008

Spatio-Temporal Analysis of Dust Storm Activity in Chryse Planitia Using MGS-MOC Observations from Mars Years 24–28

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