Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1038/NGEO3008 |
Snow precipitation on Mars driven by cloud-induced night-time convection | |
Spiga, Aymeric1; Hinson, David P.2,3; Madeleine, Jean-Baptiste1; Navarro, Thomas1; Millour, Ehouarn1; Forget, Francois1; Montmessin, Franck4 | |
2017-09-01 | |
发表期刊 | NATURE GEOSCIENCE
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ISSN | 1752-0894 |
EISSN | 1752-0908 |
出版年 | 2017 |
卷号 | 10期号:9 |
文章类型 | Article |
语种 | 英语 |
国家 | France; USA |
英文摘要 | Although it contains less water vapour than Earth's atmosphere, the Martian atmosphere hosts clouds. These clouds, composed of water-ice particles, influence the global transport of water vapour and the seasonal variations of ice deposits. However, the influence of water-ice clouds on local weather is unclear: it is thought that Martian clouds are devoid of moist convective motions, and snow precipitation occurs only by the slow sedimentation of individual particles. Here we present numerical simulations of the meteorology in Martian cloudy regions that demonstrate that localized convective snowstorms can occur on Mars. We show that such snowstorms-or ice microbursts-can explain deep night-time mixing layers detected from orbit and precipitation signatures detected below water-ice clouds by the Phoenix lander. In our simulations, convective snowstorms occur only during the Martian night, and result from atmospheric instability due to radiative cooling of water-ice cloud particles. This triggers strong convective plumes within and below clouds, with fast snow precipitation resulting from the vigorous descending currents. Night-time convection in Martian water-ice clouds and the associated snow precipitation lead to transport of water both above and below the mixing layers, and thus would affect Mars' water cycle past and present, especially under the high-obliquity conditions associated with a more intense water cycle. |
领域 | 地球科学 ; 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000409229600011 |
WOS关键词 | WATER ICE CLOUDS ; GENERAL-CIRCULATION MODEL ; BOUNDARY-LAYER ; MARTIAN ATMOSPHERE ; THERMAL TIDES ; SEASONAL DISTRIBUTION ; SIMULATION ; REPRESENTATION ; VARIABILITY ; SATURATION |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/34742 |
专题 | 地球科学 气候变化 |
作者单位 | 1.Univ Paris Saclay, PSL Res Univ, Sorbonne Univ,UPMC Univ Paris 06, Ecole Polytech,CNRS,LMD,IPSL Ecole Normale Supe, F-75005 Paris, France; 2.Stanford Univ, Stanford, CA 94305 USA; 3.SETI Inst, Mountain View, CA 94043 USA; 4.Univ Versailles St Quentin En Yvelines, Univ Paris Saclay, UPMC Univ Paris 06, LATMOS,IPSL,Sorbonne Univ,CNRS, F-78280 Guyancourt, France |
推荐引用方式 GB/T 7714 | Spiga, Aymeric,Hinson, David P.,Madeleine, Jean-Baptiste,et al. Snow precipitation on Mars driven by cloud-induced night-time convection[J]. NATURE GEOSCIENCE,2017,10(9). |
APA | Spiga, Aymeric.,Hinson, David P..,Madeleine, Jean-Baptiste.,Navarro, Thomas.,Millour, Ehouarn.,...&Montmessin, Franck.(2017).Snow precipitation on Mars driven by cloud-induced night-time convection.NATURE GEOSCIENCE,10(9). |
MLA | Spiga, Aymeric,et al."Snow precipitation on Mars driven by cloud-induced night-time convection".NATURE GEOSCIENCE 10.9(2017). |
条目包含的文件 | 条目无相关文件。 |
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