干旱区生态环境知识资源中心(Arid): Size Distribution of Mineral Dust Emissions From Sparsely Vegetated and Supply-Limited Dryland Soils

Arid

DOI	10.1029/2021JD035478
	Size Distribution of Mineral Dust Emissions From Sparsely Vegetated and Supply-Limited Dryland Soils
	Webb, Nicholas P.; LeGrand, Sandra L.; Cooper, Brad F.; Courtright, Ericha M.; Edwards, Brandon L.; Felt, Christopher; Van Zee, Justin W.; Ziegler, Nancy P.
通讯作者	Webb, NP (corresponding author), USDA ARS Jornada Expt Range, Las Cruces, NM 88001 USA.
来源期刊	JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
ISSN	2169-897X
EISSN	2169-8996
出版年	2021
卷号	126 期号:22
英文摘要	Controls on the particle size distribution (PSD) of mineral dust emissions remain poorly understood. Under near-idealized conditions, dust PSDs can appear invariant with wind friction velocity. However, dryland vegetation attenuates surface friction velocities, and soil crusting reduces the supply of loose erodible material and increases surface resistance to abrasion. Under such conditions, variability in saltation bombardment efficiency and intensity could have a large effect on dust PSDs. We present dust emission measurements from vegetated, supply-limited aeolian systems that indicate the dependence of emission-flux PSD on wind friction velocity. We find the fine fraction (<5 mu m) of dust particles increases with friction velocity. Results suggest models that assume wind-invariance of the emission-flux PSD may not be generalizable for crusted soils with vegetation. There is a need for dust models to represent variability in emission-flux PSDs for land management, air quality, and climate applications across vegetated and sediment supply-limited drylands.
英文关键词	dust emission saltation particle size aeolian friction velocity dust cycle
类型	Article
语种	英语
开放获取类型	hybrid
收录类别	SCI-E
WOS记录号	WOS:000723100300026
WOS关键词	WIND EROSION ; AEROSOL PRODUCTION ; AEOLIAN TRANSPORT ; MODEL ; VELOCITY ; DESERT ; LAYER ; PARTICLES ; DYNAMICS ; ABRASION
WOS类目	Meteorology & Atmospheric Sciences
WOS研究方向	Meteorology & Atmospheric Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/373898
作者单位	[Webb, Nicholas P.; Cooper, Brad F.; Courtright, Ericha M.; Edwards, Brandon L.; Van Zee, Justin W.] USDA ARS Jornada Expt Range, Las Cruces, NM 88001 USA; [LeGrand, Sandra L.; Felt, Christopher; Ziegler, Nancy P.] US Army, Cold Reg Res & Engn Lab CRREL, Engineer Res & Dev Ctr, Hanover, NH USA
推荐引用方式 GB/T 7714	Webb, Nicholas P.,LeGrand, Sandra L.,Cooper, Brad F.,et al. Size Distribution of Mineral Dust Emissions From Sparsely Vegetated and Supply-Limited Dryland Soils[J],2021,126(22).
APA	Webb, Nicholas P..,LeGrand, Sandra L..,Cooper, Brad F..,Courtright, Ericha M..,Edwards, Brandon L..,...&Ziegler, Nancy P..(2021).Size Distribution of Mineral Dust Emissions From Sparsely Vegetated and Supply-Limited Dryland Soils.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,126(22).
MLA	Webb, Nicholas P.,et al."Size Distribution of Mineral Dust Emissions From Sparsely Vegetated and Supply-Limited Dryland Soils".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 126.22(2021).