气候变化领域集成服务门户(CCPortal): Direct Radiative Effect by Mineral Dust Aerosols Constrained by New Microphysical and Spectral Optical Data

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DOI	10.1029/2019GL086186
	Direct Radiative Effect by Mineral Dust Aerosols Constrained by New Microphysical and Spectral Optical Data
	Di Biagio C.; Balkanski Y.; Albani S.; Boucher O.; Formenti P.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:2
英文摘要	We revise the direct radiative effect (DRE) of mineral dust aerosols in the shortwave (SW) and longwave (LW) based on global model simulations that include coarse dust particles (>20 μm) and a new LW complex refractive index data set representative of major global sources. Simulations are constrained against observed dust size distributions and optical depth. Scattering of LW radiation is accounted for in the analysis. The extension of the dust size beyond 20 μm causes a reduction in the SW DRE compared to current model estimates, while the LW DRE remains within published values due to compensating effects between changing size distribution, complex refractive index, and accounting for dust scattering. The dust direct radiative effect efficiency from model simulations reproduces well field observations close to sources and after transport. The global mean net effect of dust is −0.03 Wm−2 as a result of cooling over oceans and warming over land. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Aerosols; Minerals; Particle size analysis; Refractive index; Size distribution; Complex refractive index; Current modeling; Dust size distribution; Global modeling; Long waves; Mineral dust aerosol; Model simulation; Radiative effects; Dust; aerosol; cloud microphysics; data set; dust; mineral dust; particle size; refractive index; scattering
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/170810
作者单位	LISA, UMR CNRS 7583, Université Paris–Est–Créteil, Université de Paris, Institut Pierre–Simon Laplace (IPSL), Créteil, France; Laboratoire des Sciences du Climat et de l'Environnement, CEA CNRS UVSQ UP Saclay, Gif-sur-Yvette, France; Department of Environmental and Earth Sciences, University of Milano–Bicocca, Milan, Italy; Institut Pierre–Simon Laplace, CNRS/Sorbonne Université, Paris, France
推荐引用方式 GB/T 7714	Di Biagio C.,Balkanski Y.,Albani S.,et al. Direct Radiative Effect by Mineral Dust Aerosols Constrained by New Microphysical and Spectral Optical Data[J],2020,47(2).
APA	Di Biagio C.,Balkanski Y.,Albani S.,Boucher O.,&Formenti P..(2020).Direct Radiative Effect by Mineral Dust Aerosols Constrained by New Microphysical and Spectral Optical Data.Geophysical Research Letters,47(2).
MLA	Di Biagio C.,et al."Direct Radiative Effect by Mineral Dust Aerosols Constrained by New Microphysical and Spectral Optical Data".Geophysical Research Letters 47.2(2020).