气候变化领域集成服务门户(CCPortal): Long-term AOD trend assessment over the Eastern Mediterranean region: A comparative study including a new merged aerosol product

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DOI	10.1016/j.atmosenv.2020.117736
	Long-term AOD trend assessment over the Eastern Mediterranean region: A comparative study including a new merged aerosol product
	Shaheen A.; Wu R.; Aldabash M.
发表日期	2020
ISSN	13522310
卷号	238
英文摘要	This study conducts a comprehensive estimation of aerosol optical depth (AOD) trend and a classification of types of aerosols over the Eastern Mediterranean (EM) region using the Modern-Era Retrospective Analysis for Research and Applications, version 2 (MERRA-2) AOD and Angstrom exponent (AE) during 1980–2018 and MODerate resolution Imaging Spectroradiometer (MODIS) Collection 6.1/Terra and Aqua products during 2001–2018 and 2003–2018, respectively. Seven countries and sixteen cities were selected for the analysis. Evaluation of MODIS and MERRA-2 AOD with nine stations from the Aerosol Robotic Network (AERONET) AOD indicated spatial agreement. A new merged AOD product of MERRA-2 and MODIS (MMM) was generated. The performance of MMM not only indicated a better agreement than MODIS and MERRA-2, but also showed an efficient estimation compared to AERONET. Overall, MERRA-2 was able to quantitatively reproduce seasonal and annual AOD trends on regional scale compared to MODIS and MMM though slight differences were present in some areas. High AOD loading was mainly detected in the areas of natural mineral dust during spring and summer. Regional aerosol loading was relatively low in winter and autumn. Our results indicated that the AOD had an upward trend in the EM region during 1998–2018. Furthermore, AOD trend shifted from upward to downward around 2006 over all the countries. Our analysis revealed a dominance of clean maritime (42.95%) over the eastern part and the mixed type aerosols (34.93 and 49.13%) over the northern and southern parts. This suggests that the EM region is influenced by a variety of aerosols. © 2020 Elsevier Ltd
英文关键词	AOD trend; Classification of aerosols; Eastern mediterranean; MERRA-2; MODIS
语种	英语
scopus关键词	Radiometers; Aerosol optical depths; Aerosol robotic networks; Comparative studies; Eastern Mediterranean; Efficient estimation; Moderate resolution imaging spectroradiometer; Research and application; Retrospective analysis; Aerosols; AERONET; aerosol composition; comparative study; mineral dust; MODIS; optical depth; seasonality; spatial resolution; trend analysis; aerosol; article; autumn; city; comparative study; controlled study; human; mineral dust; optical depth; quantitative analysis; retrospective study; Southern Europe; spring; summer; winter
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/145025
作者单位	Center for Monsoon System Research, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China; College of Earth and Planetary Sciences, University of Chinese Academy of Sciences, Beijing, China; School of Earth Sciences, Zhejiang University, Hangzhou, China; Department of Geomatics Engineering, Istanbul Technical University, Istanbul, Turkey
推荐引用方式 GB/T 7714	Shaheen A.,Wu R.,Aldabash M.. Long-term AOD trend assessment over the Eastern Mediterranean region: A comparative study including a new merged aerosol product[J],2020,238.
APA	Shaheen A.,Wu R.,&Aldabash M..(2020).Long-term AOD trend assessment over the Eastern Mediterranean region: A comparative study including a new merged aerosol product.Atmospheric Environment,238.
MLA	Shaheen A.,et al."Long-term AOD trend assessment over the Eastern Mediterranean region: A comparative study including a new merged aerosol product".Atmospheric Environment 238(2020).