globalchange  > 科学计划与规划
DOI: 10.1002/2016GL068896
论文题名:
Martian dust devil statistics from high-resolution large-eddy simulations
作者: Nishizawa S.; Odaka M.; Takahashi Y.O.; Sugiyama K.-I.; Nakajima K.; Ishiwatari M.; Takehiro S.-I.; Yashiro H.; Sato Y.; Tomita H.; Hayashi Y.-Y.
刊名: Geophysical Research Letters
ISSN: 0094-9037
EISSN: 1944-8768
出版年: 2016
卷: 43, 期:9
起始页码: 4180
结束页码: 4188
语种: 英语
英文关键词: dust devil ; LES ; Mars
Scopus关键词: Dust ; Vorticity ; Atmospheric circulation ; Circulation distribution ; Dust devils ; Exponential distributions ; Frequency distributions ; Mars ; Maximum vertical vorticity ; Power law distribution ; Large eddy simulation
英文摘要: Dust devils are one of the key elements in the Martian atmospheric circulation. In order to examine their statistics, we conducted high-resolution (up to 5 m) and wide-domain (about 20 × 20 km2) large-eddy simulations of the Martian daytime convective layer. Large numbers of dust devils developed spontaneously in the simulations, which enabled us to represent a quantitative consideration of Martian dust devil frequency distributions. We clarify the distributions of size and intensity, a topic of debate, and conclude that the maximum vertical vorticity of an individual dust devil has an exponential distribution, while the radius and circulation have power law distributions. A grid refinement experiment shows that the rate parameter of the vorticity distribution and the exponent of the circulation distribution are robust. The mode of the size distribution depends on the resolution, and it is suggested that the mode is less than 5 m. © 2016. American Geophysical Union. All Rights Reserved.
URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84969922347&doi=10.1002%2f2016GL068896&partnerID=40&md5=06f1a540e454b0f48b98797ad4cda01d
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/10000
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: RIKEN Advanced Institute for Computational Science, Kobe, Japan

Recommended Citation:
Nishizawa S.,Odaka M.,Takahashi Y.O.,et al. Martian dust devil statistics from high-resolution large-eddy simulations[J]. Geophysical Research Letters,2016-01-01,43(9).
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