气候变化领域集成服务门户(CCPortal): Aerosol optical properties at seven AERONET sites over Middle East and Eastern Mediterranean Sea

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DOI	10.1016/j.atmosenv.2020.117884
	Aerosol optical properties at seven AERONET sites over Middle East and Eastern Mediterranean Sea
	Xu X.; Xie L.; Yang X.; Wu H.; Cai L.; Qi P.
发表日期	2020
ISSN	1352-2310
卷号	243
英文摘要	An 8-year dataset from 7 AERONET (Aerosol Robotic Network) sites is used to analyzed the variation characteristics of aerosol optical and microphysical properties over the Middle East (ME) and Eastern Mediterranean Sea (EMS) regions. The aerosol optical properties, including aerosol optical depth (AOD), Ångström exponent (AE), volume size distribution (VSD), aerosol absorption optical depth (AAOD), single scattering albedo (SSA), dominant types, aerosol radiative forcing (ARF) and its efficiency (ARFE), are presented and analyzed over the two regions. The regional mean AODs (AEs) are 0.31 (0.69) and 0.19 (1.10) over ME and EMS, respectively. Although the linear trend of annual averages is not significant at these sites, the variations of seasonal and annual AODs and AEs are remarkable. The mean AODs are generally higher over ME than over EMS, while the AEs show the opposite pattern. AOD appears the maximum in summer and the minimum in winter both at ME and EMS sites. AE shows the maximum in autumn and winter over ME, while in summer over EMS. The lowest AE appears in spring over both regions due to the frequent dust events. The AAOD ranges from 0.03 to 0.04 and the SSA from 0.89 to 0.93 at these sites. The seasonal AAOD presents very different features over the two regions. The AAOD appears its minimum in winter at most ME sites, while the maximum appears in the same season at EMS sites. The differences of seasonal SSAs at ME sites are relatively small, while at EMS sites the SSAs are much higher in summer and autumn than those in spring and winter. The aerosol types are discussed based on four selected classification methods. It shows that the desert dust (DD) and the mixtures (Mix) are the two dominant aerosol types at most sites except ERD which is dominated by urban industry aerosol (UI). To the radiative forcing, the ARF at bottom of atmosphere (BOA) is generally larger at ME sites than at EMS sites, while the ARFs at top of atmosphere (TOA) are numerically similar at most sites. The ARFE shows higher value at sites in Arabian Peninsula both at BOA and TOA. © 2020 Elsevier Ltd
关键词	Aerosol optical depth Aerosol type Eastern mediterranean sea Middle east Single scattering albedo Ångström exponent
语种	英语
scopus关键词	Aerosols; Atmospheric radiation; Dust; Optical properties; Aerosol optical property; Aerosol radiative forcing; Aerosol robotic networks; Eastern Mediterranean sea; Microphysical property; Single scattering albedo; Variation characteristics; Volume size distribution; Urban growth; AERONET; aerosol; optical property; radiative forcing; scattering; seasonal variation; size distribution; aerosol; albedo; article; atmosphere; autumn; desert; Mediterranean Sea; Middle East; optical depth; radiative forcing; spring; summer; winter; Arabian Peninsula; Mediterranean Sea; Mediterranean Sea (East); Middle East
来源期刊	ATMOSPHERIC ENVIRONMENT
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/248901
作者单位	Key Laboratory for Aerosol-Cloud-Precipitation of China Meteorological Administration, School of Atmospheric Physics, Nanjing University of Information Science and Technology, Nanjing, Jiangsu Province 210044, China; Xianning Meteorological Bureau of Hubei Province, Xianning, Hubei Province 437100, China
推荐引用方式 GB/T 7714	Xu X.,Xie L.,Yang X.,et al. Aerosol optical properties at seven AERONET sites over Middle East and Eastern Mediterranean Sea[J],2020,243.
APA	Xu X.,Xie L.,Yang X.,Wu H.,Cai L.,&Qi P..(2020).Aerosol optical properties at seven AERONET sites over Middle East and Eastern Mediterranean Sea.ATMOSPHERIC ENVIRONMENT,243.
MLA	Xu X.,et al."Aerosol optical properties at seven AERONET sites over Middle East and Eastern Mediterranean Sea".ATMOSPHERIC ENVIRONMENT 243(2020).