气候变化领域集成服务门户(CCPortal): Distribution and transport characteristics of dust aerosol over Tibetan Plateau and Taklimakan Desert in China using MERRA-2 and CALIPSO data

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DOI	10.1016/j.atmosenv.2020.117670
	Distribution and transport characteristics of dust aerosol over Tibetan Plateau and Taklimakan Desert in China using MERRA-2 and CALIPSO data
	Xu X.; Wu H.; Yang X.; Xie L.
发表日期	2020
ISSN	1352-2310
卷号	237
英文摘要	The distribution and transportation characteristics of dust aerosol over the Tibetan Plateau (TP) and Taklimakan Desert (TD) were analyzed during 1980–2017 using MERRA-2 (second Modern-Era Retrospective analysis for Research and Applications) and CALIPSO (Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observations) products. The aerosol optical depth (AOD) of MERRA-2 were compared with those of AERONET (Aerosol Robotic Network) at six sites and the corresponding MISR (Multi-angle Imaging SpectroRadiometer) data. The correlation coefficients were 0.73–0.88 and 0.94, respectively. The yearly AOD over the IGP (Indo-Gangetic Plain) and the TD showed a significant increasing trend. The variations of seasonal AOD and dust AOD (DAOD) over the research region were similar, showing the values decreasing from north to south and the higher values appearing in spring and summer. The DAOD/AOD ratio exceeded 0.5 during March–August and throughout whole year in the north part of the TP and the TD, respectively. The duration, strength and area of the high DAOD region over the TD have enhanced during the past 38 years. From the CALIPSO observation, it showed the dust moving from the TD to the TP was mainly through the Qaidam Basin in the layer of 4–8 km aloft and could transport as south as 30°N, with the maximum lifting height in spring. In winter, the dust over TP was mainly from the Qaidam Basin due to the suppression effect of the inversion layer over the TD. The largest profile of dust extinction coefficient appeared in spring over the TD, while in summer over the TP. The distribution and annual regional averages of base, top and thickness of dust layer were calculated and presented. It shows a long-standing dust layer of about 1 km appearing over the TP with the maximum in spring. © 2020 Elsevier Ltd
关键词	Aerosol optical depth Dust Taklimakan desert Tibetan plateau
语种	英语
scopus关键词	Aerosols; Optical radar; Aerosol optical depths; Aerosol robotic networks; Cloud-aerosol lidar and infrared pathfinder satellite observations; Correlation coefficient; Multiangle imaging spectroradiometer; Research and application; Retrospective analysis; Transport characteristics; Dust; AERONET; aerosol; CALIPSO; dust; extinction coefficient; inversion layer; MISR; optical depth; satellite data; seasonal variation; aerosol; article; China; correlation coefficient; desert; infrared radiation; optical depth; retrospective study; spring; summer; thickness; winter; China; Gangetic Plain; Qaidam Basin; Qinghai; Qinghai-Xizang Plateau; Taklimakan Desert; Xinjiang Uygur
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/249060
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
推荐引用方式 GB/T 7714	Xu X.,Wu H.,Yang X.,et al. Distribution and transport characteristics of dust aerosol over Tibetan Plateau and Taklimakan Desert in China using MERRA-2 and CALIPSO data[J],2020,237.
APA	Xu X.,Wu H.,Yang X.,&Xie L..(2020).Distribution and transport characteristics of dust aerosol over Tibetan Plateau and Taklimakan Desert in China using MERRA-2 and CALIPSO data.ATMOSPHERIC ENVIRONMENT,237.
MLA	Xu X.,et al."Distribution and transport characteristics of dust aerosol over Tibetan Plateau and Taklimakan Desert in China using MERRA-2 and CALIPSO data".ATMOSPHERIC ENVIRONMENT 237(2020).