气候变化领域集成服务门户(CCPortal): Assessment of dominating aerosol properties and their long-term trend in the Pan-Third Pole region: A study with 10-year multi-sensor measurements

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DOI	10.1016/j.atmosenv.2020.117738
	Assessment of dominating aerosol properties and their long-term trend in the Pan-Third Pole region: A study with 10-year multi-sensor measurements
	Wang T.; Chen Y.; Gan Z.; Han Y.; Li J.; Huang J.
发表日期	2020
ISSN	1352-2310
卷号	239
英文摘要	The Pan-Third Pole (PTP), stretching from Eastern Asia to Middle-central Europe, has experienced unprecedented accelerated warming and even retreat of glaciers. Absorbing aerosols reduce snow and ice albedo and radiative forcing, consequently enhancing a great melting of snow cover and ice sheet in the PTP. Employing the 10-year (2007–2016) space-based active and passive measurements, this study investigated the distribution, optical properties and decadal trends for dominating aerosols at a seasonal scale in the PTP divided into six sub-regions. Results showed that the sub-regions of PTP were mainly dominated by dust, polluted dust and elevated smoke. The Taklimakan Desert (TD) and the Iranian Plateau (IP) were dominated by mineral dust, accounting for 96% and 86% of the total aerosol extinction while the Central Europe (CE), Indo-China (IC) and Anatolia Plateau (AP) were dominated by the mixture of the dominating aerosol types. The mean aerosol extinction coefficient (MAEC) showed an obvious variability depending on the sub-regions and a tendency of decreasing with an increase in the topographic height. The strongest extinction layer (>0.1 km−1) mainly occurred below 4 km and the weak extinction layers (>0.001 km−1) were mainly distributed between 5 km and 8 km, indicating pronounced vertical transport in the region. The decadal trends of columnar aerosol optical depth (AOD) showed a relation with the contributions of the dominating aerosol types. For example, significant upward or downward trends of total aerosol loading in the IC region were driven by elevated smoke while the AOD trends of total aerosol loading for the CE, the AP and the IP were driven by the dominating aerosol types. The Tibetan Plateau (TP), the cleanest region in the PTP, has been regularly exposed to polluted air masses with significant amounts of absorbing aerosols. Therefore, understanding the dominating aerosol types, properties and decadal trends in the PTP region will contribute considerably to assessing their effects on radiative forcing, climate change, and even snowmelt and glacier retreat. © 2020 Elsevier Ltd
关键词	Active/passive satellite Dominating aerosol Long-term trend The Pan-Third Pole
语种	英语
scopus关键词	Atmospheric radiation; Climate change; Dust; Integrated circuits; Light extinction; Optical properties; Poles; Smoke; Snow; Aerosol extinction; Aerosol extinction coefficient; Aerosol optical depths; Aerosol properties; Passive measurements; Radiative forcings; Taklimakan desert; Vertical transports; Aerosols; snow; aerosol; air mass; albedo; assessment method; dust; extinction coefficient; glacier retreat; ice sheet; melting; optical depth; radiative forcing; smoke; snow cover; topography; aerosol; air pollution; Article; climate change; controlled study; deglaciation; desert; Europe; mineral dust; optical depth; priority journal; radiative forcing; smoke; Southeast Asia; Anatolia; Central Europe; China; Iranian Plateau; Qinghai-Xizang Plateau; Taklimakan Desert; Turkey; 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/249006
作者单位	Key Laboratory for Semi-Arid Climate Change of the Ministry of Education, Lanzhou University, Lanzhou, 730000, China; Guizhou Meteorological Bureau, Guiyang, 550002, China
推荐引用方式 GB/T 7714	Wang T.,Chen Y.,Gan Z.,et al. Assessment of dominating aerosol properties and their long-term trend in the Pan-Third Pole region: A study with 10-year multi-sensor measurements[J],2020,239.
APA	Wang T.,Chen Y.,Gan Z.,Han Y.,Li J.,&Huang J..(2020).Assessment of dominating aerosol properties and their long-term trend in the Pan-Third Pole region: A study with 10-year multi-sensor measurements.ATMOSPHERIC ENVIRONMENT,239.
MLA	Wang T.,et al."Assessment of dominating aerosol properties and their long-term trend in the Pan-Third Pole region: A study with 10-year multi-sensor measurements".ATMOSPHERIC ENVIRONMENT 239(2020).