IEECAS OpenIR  > 黄土与第四纪地质国家重点实验室(2010~)
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
Source PublicationATMOSPHERIC ENVIRONMENT
Volume158Issue:2017Pages:98-104
SubtypeArticle
AbstractDust 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.
KeywordDustfall Dust Deposition Chinese Loess Plateau Meteorological Constraint
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine ; Physical Sciences
DOI10.1016/j.atmosenv.2017.03.032
WOS KeywordASIAN DUST ; GRAIN-SIZE ; MINERAL AEROSOL ; LOESS PLATEAU ; CLIMATE ; REGION ; TRANSPORT ; DESERT ; CHINA ; STORM
Indexed BySCI
Language英语
WOS Research AreaEnvironmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
WOS SubjectEnvironmental Sciences ; Meteorology & Atmospheric Sciences
WOS IDWOS:000401207900009
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Document Type期刊论文
Identifierhttp://ir.ieecas.cn/handle/361006/5473
Collection黄土与第四纪地质国家重点实验室(2010~)
Affiliation1.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
Recommended Citation
GB/T 7714
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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