气候变化领域集成服务门户(CCPortal): Detections of Water Vapor Increase Over the North Polar Troughs on Mars as Observed by CRISM

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DOI	10.1029/2019GL086195
	Detections of Water Vapor Increase Over the North Polar Troughs on Mars as Observed by CRISM
	Khayat A.S.J.; Smith M.D.; Guzewich S.D.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:3
英文摘要	The Compact Reconnaissance Imaging Spectrometer for Mars (CRISM) onboard the Mars Reconnaissance Orbiter has been observing the north polar layered deposits (NPLD) of Mars. Polar wind circulations are instrumental in shaping the NPLD. In particular, the downslope (katabatic) flows help carve the spiral-shaped geological depressions, known as the polar troughs, and appropriate environmental conditions develop katabatic jumps that favor substantial water abundance changes over the troughs. Utilizing CRISM retrievals, we report the first observational evidence of the sharp increase in the water vapor abundance over polar troughs on Mars at high resolution (~320 m). This has a direct influence on the dynamic evolution of ice migration in the northern polar cap, the major source of atmospheric water on Mars. © 2020. American Geophysical Union. All Rights Reserved. This article has been contributed to by US Government employees and their work is in the public domain in the USA.
英文关键词	Martian surface analysis; Radiative transfer; Spectrometers; Spectroscopy; Compact reconnaissance; Dynamic evolution; Environmental conditions; Imaging spectrometers; katabatic jump; Mars atmosphere; Mars Reconnaissance Orbiters; polar trough; Water vapor
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/170729
作者单位	NASA Goddard Spaceflight Center, Greenbelt, MD, United States; CRESST II and Department of Astronomy, University of Maryland, College Park, MD, United States
推荐引用方式 GB/T 7714	Khayat A.S.J.,Smith M.D.,Guzewich S.D.. Detections of Water Vapor Increase Over the North Polar Troughs on Mars as Observed by CRISM[J],2020,47(3).
APA	Khayat A.S.J.,Smith M.D.,&Guzewich S.D..(2020).Detections of Water Vapor Increase Over the North Polar Troughs on Mars as Observed by CRISM.Geophysical Research Letters,47(3).
MLA	Khayat A.S.J.,et al."Detections of Water Vapor Increase Over the North Polar Troughs on Mars as Observed by CRISM".Geophysical Research Letters 47.3(2020).