Meteorological constraints on characteristics of daily dustfall in Xi'an
Yan, Yan1,2; Chen, Hongyun3; Liang, Lianji4; Ma, Long2,5; Liu, Xingxing2; Liu, Haijiao2,5; Sun, Youbin2,6
2017-06-01
发表期刊ATMOSPHERIC ENVIRONMENT
卷号158期号:2017页码:98-104
文章类型Article
摘要Dust deposition is a crucial link of dust cycle that is less constrained in model studies. This study acquired profiles of flux and size distribution of daily dustfall from 2012 to 2013 in Xi'an on the southern Chinese Loess Plateau. On this basis, we made quantitative estimates of dust contribution from particular sources and processes, which provides important boundary conditions for model studies. Regrouping the data into transport- and source-limited deposition scenarios, we revealed that besides precipitation extreme wind speed and average relative humidity are the primary meteorological constraints in the transport and source-limited scenarios, respectively. Stronger extreme wind speed promotes higher flux and deposition of dust >16 mu m, corroborating previous interpretations of variation of flux and grain size of aeolian deposits. However, higher average relative humidity favors lower flux and deposition of dust <16 mu m, which is a deposition process not recognized before, and is possibly due to hygroscopicity of mineral dust or the influence of water vapor on air convection. Elucidating this process in future studies might substantially improve model performance on dust deposition. (C) 2017 Elsevier Ltd. All rights reserved.
关键词Dustfall Dust Deposition Chinese Loess Plateau Meteorological Constraint
WOS标题词Science & Technology ; Life Sciences & Biomedicine ; Physical Sciences
DOI10.1016/j.atmosenv.2017.03.032
关键词[WOS]ASIAN DUST ; GRAIN-SIZE ; MINERAL AEROSOL ; LOESS PLATEAU ; CLIMATE ; REGION ; TRANSPORT ; DESERT ; CHINA ; STORM
收录类别SCI
语种英语
WOS研究方向Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
WOS类目Environmental Sciences ; Meteorology & Atmospheric Sciences
WOS记录号WOS:000401207900009
引用统计
文献类型期刊论文
条目标识符http://ir.ieecas.cn/handle/361006/5473
专题黄土与第四纪地质国家重点实验室(2010~)
作者单位1.China Univ Geosci, Sch Earth Sci, Wuhan 430074, Peoples R China
2.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Peoples R China
3.Chinese Acad Geol Sci, Inst Hydrogeol & Environm Geol, Shijiazhuang 050061, Peoples R China
4.Beijing Univ Technol, Coll Architecture & Civil Engn, Beijing 100124, Peoples R China
5.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
6.Xi An Jiao Tong Univ, Inst Global Environm Change, Xian 710049, Peoples R China
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Yan, Yan,Chen, Hongyun,Liang, Lianji,et al. Meteorological constraints on characteristics of daily dustfall in Xi'an[J]. ATMOSPHERIC ENVIRONMENT,2017,158(2017):98-104.
APA Yan, Yan.,Chen, Hongyun.,Liang, Lianji.,Ma, Long.,Liu, Xingxing.,...&Sun, Youbin.(2017).Meteorological constraints on characteristics of daily dustfall in Xi'an.ATMOSPHERIC ENVIRONMENT,158(2017),98-104.
MLA Yan, Yan,et al."Meteorological constraints on characteristics of daily dustfall in Xi'an".ATMOSPHERIC ENVIRONMENT 158.2017(2017):98-104.
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