DOI: 10.1002/2015GL064004
论文题名: Extreme detached dust layers near Martian volcanoes: Evidence for dust transport by mesoscale circulations forced by high topography
作者: Heavens N.G. ; Cantor B.A. ; Hayne P.O. ; Kass D.M. ; Kleinböhl A. ; McCleese D.J. ; Piqueux S. ; Schofield J.T. ; Shirley J.H.
刊名: Geophysical Research Letters
ISSN: 0094-9160
EISSN: 1944-8891
出版年: 2015
卷: 42, 期: 10 起始页码: 3730
结束页码: 3738
语种: 英语
英文关键词: dust
; Mars
; mesoscale
; topographic circulation
; volcanoes
Scopus关键词: Dust
; Martian surface analysis
; Mixing
; Volcanoes
; Aerosol retrieval
; Mars
; Mars Reconnaissance Orbiters
; Mesoscale
; Mesoscale circulation
; Middle atmosphere
; Thermal circulation
; Vertical mixing
; Storms
; dust
; extreme event
; Mars
; Martian atmosphere
; mesoscale motion
; mixing
; topography
; volcano
; water vapor
英文摘要: Modeling suggests that thermal circulations over Mars's highest volcanoes transport water vapor and dust from the surface into the middle atmosphere, forming detached layers in these constituents. Intense vertical mixing also takes place in regional and global dust storms, which can generate detached layers that are extreme in both altitude and magnitude. Here we employ observations by the Mars Climate Sounder (MCS) on board Mars Reconnaissance Orbiter, taking advantage of improved vertical coverage in MCS's aerosol retrievals, to discover a new class of extreme detached dust layers (EDDLs). Observed during minimal dust storm activity and furthermore distinguished by their potentially large and measurable horizontal extent (>1000 km), these EDDLs cluster near Olympus Mons and the Tharsis Montes, from which they likely originate. The existence of these EDDLs suggests that vertical mixing by topographic circulations can be much stronger than previously modeled and more frequent than previously observed. ©2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84931563511&doi=10.1002%2f2015GL064004&partnerID=40&md5=bf01a09f40589ab6aa0bb99f9a58270f
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8776
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: Department of Atmospheric and Planetary Sciences, Hampton University, Hampton, VA, United States
Recommended Citation:
Heavens N.G.,Cantor B.A.,Hayne P.O.,et al. Extreme detached dust layers near Martian volcanoes: Evidence for dust transport by mesoscale circulations forced by high topography[J]. Geophysical Research Letters,2015-01-01,42(10).