干旱区生态环境知识资源中心(Arid): Estimating radiative forcing efficiency of dust aerosol based on direct satellite observations: case studies over the Sahara and Taklimakan Desert

Arid

DOI	10.5194/acp-21-11669-2021
	Estimating radiative forcing efficiency of dust aerosol based on direct satellite observations: case studies over the Sahara and Taklimakan Desert
	Tian, Lin; Chen, Lin; Zhang, Peng; Bi, Lei
通讯作者	Chen, L ; Zhang, P (corresponding author), China Meteorol Adm, Natl Satellite Meteorol Ctr, Beijing, Peoples R China. ; Chen, L ; Zhang, P (corresponding author), China Meteorol Adm, Innovat Ctr FengYun Meteorol Satellite, Beijing, Peoples R China.
来源期刊	ATMOSPHERIC CHEMISTRY AND PHYSICS
ISSN	1680-7316
EISSN	1680-7324
出版年	2021
卷号	21 期号:15 页码:11669-11687
英文摘要	The direct radiative forcing efficiency of dust aerosol (DRFEdust) is an important indicator to measure the climate effect of dust. The DRFEdust is determined by the microphysical properties of dust, which vary with dust source regions. However, there are only sparse in situ measurements of them, such as the distribution of the dust aerosol particle size and the complex refractive index in the main dust source regions. Furthermore, recent studies have shown that the non-spherical effect of the dust particle is not negligible. The DRFEdust is often evaluated by estimating given microphysical properties of the dust aerosols in the radiative transfer model (RTM). However, considerable uncertainties exist due to the complex and variable dust properties, including the complex refractive index and the shape of the dust. The DRFEdust over the Taklimakan Desert and Sahara is derived from the satellite observations in this paper. The advantage of the proposed satellite-based method is that there is no need to consider the microphysical properties of the dust aerosols in estimating the DRFEdust. For comparison, the observed DRFEdust is compared with that simulated by the RTM. The differences in the dust microphysical properties in these two regions and their impacts on DRFEdust are analyzed. The DRFEdust derived from the satellite observation is -39.6 +/- 10.0 W m(2)tau(-1) in March 2019 over Tamanrasset in the Sahara and -48.6 +/- 13.7 W m(2)tau(-1) in April 2019 over Kashi in the Taklimakan Desert. According to the analyses of their microphysical properties and optical properties, the dust aerosols from the Taklimakan Desert (Kashi) scatter strongly. The RTM-simulated results (-41.5 to -47.4 W m(-2)tau(-1) over Kashi and -32.2 to -44.3 W m(-2)tau(-1) over Tamanrasset) are in good agreement with the results estimated by satellite observations. According to previous studies, the results in this paper are proven to be reasonable and reliable. The results also show that the microphysical properties of the dust can significantly influence the DRFEdust. The satellite-derived results can represent the influence of the dust microphysical properties on the DRFEdust, which can also validate the direct radiative effect of the dust aerosol and the DRFEdust derived from the numerical model more directly.
类型	Article
语种	英语
开放获取类型	Green Submitted, gold
收录类别	SCI-E
WOS记录号	WOS:000683773600001
WOS关键词	OPTICAL-PROPERTIES ; MINERAL DUST ; NONSPHERICAL PARTICLES ; REFRACTIVE-INDEX ; MASS-BALANCE ; CLIMATE ; EMISSIONS ; ALGORITHM ; PRODUCTS ; AFRICAN
WOS类目	Environmental Sciences ; Meteorology & Atmospheric Sciences
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
来源机构	南京信息工程大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/362644
作者单位	[Tian, Lin] Nanjing Univ Informat Sci & Technol, Nanjing, Peoples R China; [Tian, Lin] Chinese Acad Meteorol Sci, Beijing, Peoples R China; [Tian, Lin; Chen, Lin; Zhang, Peng] China Meteorol Adm, Natl Satellite Meteorol Ctr, Beijing, Peoples R China; [Tian, Lin; Chen, Lin; Zhang, Peng] China Meteorol Adm, Innovat Ctr FengYun Meteorol Satellite, Beijing, Peoples R China; [Bi, Lei] Zhejiang Univ, Sch Earth Sci, Dept Atmospher Sci, Hangzhou, Peoples R China
推荐引用方式 GB/T 7714	Tian, Lin,Chen, Lin,Zhang, Peng,et al. Estimating radiative forcing efficiency of dust aerosol based on direct satellite observations: case studies over the Sahara and Taklimakan Desert[J]. 南京信息工程大学,2021,21(15):11669-11687.
APA	Tian, Lin,Chen, Lin,Zhang, Peng,&Bi, Lei.(2021).Estimating radiative forcing efficiency of dust aerosol based on direct satellite observations: case studies over the Sahara and Taklimakan Desert.ATMOSPHERIC CHEMISTRY AND PHYSICS,21(15),11669-11687.
MLA	Tian, Lin,et al."Estimating radiative forcing efficiency of dust aerosol based on direct satellite observations: case studies over the Sahara and Taklimakan Desert".ATMOSPHERIC CHEMISTRY AND PHYSICS 21.15(2021):11669-11687.