干旱区生态环境知识资源中心(Arid): Linking the Different Diameter Types of Aspherical Desert Dust Indicates That Models Underestimate Coarse Dust Emission

Arid

DOI	10.1029/2020GL092054
	Linking the Different Diameter Types of Aspherical Desert Dust Indicates That Models Underestimate Coarse Dust Emission
	Huang, Yue; Adebiyi, Adeyemi A.; Formenti, Paola; Kok, Jasper F.
通讯作者	Huang, Y (corresponding author), Univ Calif Los Angeles, Dept Atmospher & Ocean Sci, Los Angeles, CA USA.
来源期刊	GEOPHYSICAL RESEARCH LETTERS
ISSN	0094-8276
EISSN	1944-8007
出版年	2021
卷号	48 期号:6
英文摘要	Measurements of dust aerosol size usually obtain the optical or projected area-equivalent diameters, whereas model calculations of dust impacts use the geometric or aerodynamic diameters. Accurate conversions between the four diameter types are thus critical. However, most current conversions assume dust is spherical, even though numerous studies show that dust is highly aspherical. Here, we obtain conversions between different diameter types that account for dust asphericity. Our conversions indicate that optical particle counters have underestimated dust geometric diameter (D-geo) at coarse sizes. We further use the diameter conversions to obtain a consistent observational constraint on the size distribution of emitted dust. This observational constraint is coarser than parameterization used in global aerosol models, which underestimate the mass of emitted dust within 10 <= D-geo <= 20 mu m by a factor of similar to 2 and usually do not account for the substantial dust emissions with D-geo >= 20 mu m. Our findings suggest that models substantially underestimate coarse dust emission.
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000635209100081
WOS关键词	MINERAL-DUST ; SIZE DISTRIBUTION ; REFRACTIVE-INDEX ; SAHARAN DUST ; OPTICAL-PROPERTIES ; SINGLE-SCATTERING ; PARTICLE-SIZE ; AEROSOLS ; LAYER ; DISTRIBUTIONS
WOS类目	Geosciences, Multidisciplinary
WOS研究方向	Geology
来源机构	E17 ; University of California, Los Angeles
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/350422
作者单位	[Huang, Yue; Adebiyi, Adeyemi A.; Kok, Jasper F.] Univ Calif Los Angeles, Dept Atmospher & Ocean Sci, Los Angeles, CA USA; [Formenti, Paola] Univ Paris, Univ Paris Est Creteil, Lab Interuniv Syst Atmospher, CNRS,UMR 7583, Creteil, France
推荐引用方式 GB/T 7714	Huang, Yue,Adebiyi, Adeyemi A.,Formenti, Paola,et al. Linking the Different Diameter Types of Aspherical Desert Dust Indicates That Models Underestimate Coarse Dust Emission[J]. E17, University of California, Los Angeles,2021,48(6).
APA	Huang, Yue,Adebiyi, Adeyemi A.,Formenti, Paola,&Kok, Jasper F..(2021).Linking the Different Diameter Types of Aspherical Desert Dust Indicates That Models Underestimate Coarse Dust Emission.GEOPHYSICAL RESEARCH LETTERS,48(6).
MLA	Huang, Yue,et al."Linking the Different Diameter Types of Aspherical Desert Dust Indicates That Models Underestimate Coarse Dust Emission".GEOPHYSICAL RESEARCH LETTERS 48.6(2021).