Long-term aerosol optical depth trend over Iran and identi fication of dominant aerosol types

doi:10.1016/j.scitotenv.2020.137906

	Long-term aerosol optical depth trend over Iran and identi fication of dominant aerosol types
	Yousefi, Robabeh 1,2; Wang, Fang 1; Ge, Quansheng 1; Shaheen, Abdallah 3,4
刊名	SCIENCE OF THE TOTAL ENVIRONMENT
	2020-06-20
卷号	722 页码:14
关键词	AOD MERRA-2 MODIS Trend Classification Iran
ISSN号	0048-9697
DOI	10.1016/j.scitotenv.2020.137906
通讯作者	Wang, Fang(wangf@igsnrr.ac.cn) ; Ge, Quansheng(geqs@igsnrr.ac.cn)
英文摘要	The paper focuses on analysis of long-term changes of aerosol optical depth (AOD) over Iran. It describes contributions of dominant aerosol in the aerosol load over Iran covering the period 1980-2018. For this purpose, a long-term AOD dataset from the reanalysis-based Modern Era Retrospective Analysis for Research and Applications (MERRA-2), the satellite-based Moderate Resolution Imaging Spectroradiometer (the new version of MODIS/Terra and Aqua) as well as a new AOD product (MERRA-2 MODIS merged) were used. The groundbased AOD measurements of the five Aerosol Robotic Network (AERONET) sites used for validation demonstrated better consistency of the MERRA-2 MODIS merged (MMM) product. Analysis of these datasets demonstrated high AOD in the southwest of Iran because of the proximity to the major source areas of natural mineral dust in spring and summer. In contrast, low AOD was mostly observed along the high elevation lands in the northern and western highlands. The trend analysis of AODs revealed differences between the AOD datasets, but agree on the positive trends over southwestern Iran and negative trend in northern Iran. Classification of major aerosol types indicated that the clean marine andmixed aerosols were the dominant aerosol types during the cold and hot seasons, respectively, and the increase of desert dust around 2010 was another obvious result in spring and summer. Our results indicate that the variation in dust aerosol has a key role in determining the AOD long-term changes in Iran which has contributed in regional climate change and environmental evolutions. (C) 2020 Elsevier B.V. All rights reserved.
资助项目	National Key Research and Development Program of China[2019YFC0507805] ; National Key Research and Development Program of China[2016YFA0602704] ; Strategic Leading Science and Technology Programof the Chinese Academy of Sciences[XDA20020202] ; National Natural Science Foundation of China[41771050]
WOS关键词	BEIJING-TIANJIN-HEBEI ; TEMPORAL VARIATIONS ; DUST EVENTS ; EAST-ASIA ; MODIS ; CHINA ; AERONET ; PRODUCTS ; MODEL ; CLIMATOLOGY
WOS研究方向	Environmental Sciences & Ecology
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000535720900005
资助机构	National Key Research and Development Program of China ; Strategic Leading Science and Technology Programof the Chinese Academy of Sciences ; National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/159624]
专题	中国科学院地理科学与资源研究所
通讯作者	Wang, Fang; Ge, Quansheng
作者单位	1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, Beijing 100101, Peoples R China 2.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Ctr Monsoon Syst Res, Inst Atmospher Phys, Beijing 100029, Peoples R China 4.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Yousefi, Robabeh,Wang, Fang,Ge, Quansheng,et al. Long-term aerosol optical depth trend over Iran and identi fication of dominant aerosol types[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2020,722:14.
APA	Yousefi, Robabeh,Wang, Fang,Ge, Quansheng,&Shaheen, Abdallah.(2020).Long-term aerosol optical depth trend over Iran and identi fication of dominant aerosol types.SCIENCE OF THE TOTAL ENVIRONMENT,722,14.
MLA	Yousefi, Robabeh,et al."Long-term aerosol optical depth trend over Iran and identi fication of dominant aerosol types".SCIENCE OF THE TOTAL ENVIRONMENT 722(2020):14.