干旱区生态环境知识资源中心(Arid): Meteorological catalysts of dust events and particle source dynamics of affected soils during the 1930s Dust Bowl drought, Southern High Plains, USA

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DOI	10.1016/j.ancene.2019.100216
	Meteorological catalysts of dust events and particle source dynamics of affected soils during the 1930s Dust Bowl drought, Southern High Plains, USA
	Bolles, Kasey 1; Sweeney, Mark 2; Forman, Steven 3
通讯作者	Bolles, Kasey
来源期刊	ANTHROPOCENE
ISSN	2213-3054
出版年	2019
卷号	27
英文摘要	Mineral dust aerosols are a key component of the Earth system and a growing public health concern under climate change, as levels of dustiness increase. The Great Plains in the USA is particularly vulnerable to dust episodes, but land-atmosphere interactions contributing to large-scale dust transport are poorly constrained. This study compiled one of the longest quantitative, spatially-comprehensive records of dust events in the core Dust Bowl region never before available. Combined with experiment station reports from the Soil Conservation Service, reanalysis data products, and contemporary field surveys using a Portable In-Situ Wind Erosion Laboratory (PI-SWERL), the study examined meteorological catalysts for dust events and surficial dynamics of particle emission on the Southern High Plains (SHP). Multivariate statistical analyses of dust event variance yield 6 principal components capturing 60% of the variance of all dust event days. Results identified four dominant modes of dust events related to the season of occurrence and principal meteorological controls. A broader assessment of the potential emissivity of SHP soils reveals that disturbed surfaces begin to emit dust at a magnitude-higher rate than undisturbed surfaces as soon as the wind velocity reaches the threshold, increasing linearly with windspeed. Conversely, crusted undisturbed soil surfaces do not begin to reach the same flux rate until much higher windspeeds, at which point crusts are broken and emissivity rates increase exponentially. Significantly, the particle emissivity of undisturbed, loose sandy soils mirrors that of disturbed surfaces in relation to windspeed and potential magnitude of dust emission. This finding suggests that the prevalent sandier, rangeland soils of the SHP could be equal or greater dust sources than cultivated fields during periods of sustained, severe aridity. (C) 2019 The Authors. Published by Elsevier Ltd.
英文关键词	Dust bowl drought Land-atmosphere interaction U.S. great plains Mineral dust aerosols Surficial soil dust particle emissivity
类型	Article
语种	英语
国家	USA
开放获取类型	hybrid
收录类别	SCI-E ; SSCI
WOS记录号	WOS:000488238700005
WOS关键词	MOISTURE-PRECIPITATION FEEDBACK ; THRESHOLD FRICTION VELOCITIES ; AMERICAN MONSOON SYSTEM ; UNITED-STATES ; GREAT-PLAINS ; DESERT DUST ; AIR-QUALITY ; PARTICULATE MATTER ; SURFACE-ROUGHNESS ; CLIMATE-CHANGE
WOS类目	Environmental Sciences ; Geography, Physical ; Geosciences, Multidisciplinary
WOS研究方向	Environmental Sciences & Ecology ; Physical Geography ; Geology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/214202
作者单位	1.Columbia Univ, Lamont Doherty Earth Observ, Div Biol & Paleo Environm, Palisades, NY 10964 USA; 2.Univ South Dakota, Earth Sci Program, Dept Sustainabil & Environm, 414 E Clark St, Vermillion, SD 57069 USA; 3.Baylor Univ, Inst Archeol, Dept Geosci, One Bear Pl 97354, Waco, TX 76798 USA
推荐引用方式 GB/T 7714	Bolles, Kasey,Sweeney, Mark,Forman, Steven. Meteorological catalysts of dust events and particle source dynamics of affected soils during the 1930s Dust Bowl drought, Southern High Plains, USA[J],2019,27.
APA	Bolles, Kasey,Sweeney, Mark,&Forman, Steven.(2019).Meteorological catalysts of dust events and particle source dynamics of affected soils during the 1930s Dust Bowl drought, Southern High Plains, USA.ANTHROPOCENE,27.
MLA	Bolles, Kasey,et al."Meteorological catalysts of dust events and particle source dynamics of affected soils during the 1930s Dust Bowl drought, Southern High Plains, USA".ANTHROPOCENE 27(2019).