气候变化领域集成服务门户(CCPortal): Vertical profile of aerosols in the Himalayas revealed by lidar: New insights into their seasonal/diurnal patterns, sources, and transport*

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DOI	10.1016/j.envpol.2021.117686
	Vertical profile of aerosols in the Himalayas revealed by lidar: New insights into their seasonal/diurnal patterns, sources, and transport*
	Xiang, Yan; Zhang, Tianshu; Liu, Jianguo; Wan, Xin; Loewen, Mark; Chen, Xintong; Kang, Shichang; Fu, Yibin; Lv, Lihui; Liu, Wenqing; Cong, Zhiyuan
通讯作者	Cong, ZY (通讯作者)，Chinese Acad Sci, Inst Tibetan Plateau Res, State Key Lab Tibetan Plateau Earth Syst Resource, Beijing 100101, Peoples R China.
发表日期	2021
ISSN	0269-7491
EISSN	1873-6424
卷号	285
英文摘要	Atmospheric aerosols play a crucial role in climate change, especially in the Himalayas and Tibetan Plateau. Here, we present the seasonal and diurnal characteristics of aerosol vertical profiles measured using a Mie lidar, along with surface black carbon (BC) measurements, at Mt. Qomolangma (QOMS), in the central Himalayas, in 2018-2019. Lidar-retrieved profiles of aerosols showed a distinct seasonal pattern of aerosol loading (aerosol extinction coefficient, AEC), with a maximum in the pre-monsoon (19.8 +/- 22.7 Mm-1 of AEC) and minimum in the summer monsoon (7.0 +/- 11.2 Mm-1 of AEC) seasons. The diurnal variation characteristics of AEC and BC were quite different in the non-monsoon seasons with enriched aerosols being maintained from 00:00 to 10:00 in the pre-monsoon season. The major aerosol types at QOMS were identified as background, pollution, and dust aerosols, especially during the pre-monsoon season. The occurrence of pollution events influenced the vertical distribution, seasonal/diurnal patterns, and types of aerosols. Source contribution of BC based on the weather research and forecasting chemical model showed that approximately 64.2% +/- 17.0% of BC at the QOMS originated from India and Nepal in South Asia during the non-monsoon seasons, whereas approximately 47.7% was from local emission sources in monsoon season. In particular, the high abundance of BC at the QOMS in the premonsoon season was attributed to biomass burning, whereas anthropogenic emissions were the likely sources during the other seasons. The maximum aerosol concentration appeared in the near-surface layer (approximately 4.3 km ASL), and high concentrations of transported aerosols were mainly found at 4.98, 4.58, 4.74, and 4.88 km ASL in the pre-monsoon, monsoon, post-monsoon, and winter seasons, respectively. The investigation of the vertical profiles of aerosols at the QOMS can help verify the representation of aerosols in the air quality model and satellite products and regulate the anthropogenic disturbance over the Tibetan Plateau.
关键词	BOUNDARY-LAYER HEIGHT TIBETAN PLATEAU BLACK CARBON OPTICAL-PROPERTIES 3RD POLE ATMOSPHERIC-POLLUTION EMISSION INVENTORY CRYOSPHERIC CHANGE SOURCE REGIONS PM2.5
英文关键词	Aerosol; Lidar; Vertical profile; Black carbon; Transport
语种	英语
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Environmental Sciences
WOS记录号	WOS:000685348100006
来源期刊	ENVIRONMENTAL POLLUTION
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/255002
作者单位	[Xiang, Yan; Zhang, Tianshu; Lv, Lihui; Liu, Wenqing] Anhui Univ, Inst Phys Sci, Hefei 230601, Peoples R China; [Zhang, Tianshu; Liu, Jianguo; Fu, Yibin; Liu, Wenqing] Chinese Acad Sci, Anhui Inst Opt & Fine Mech, Key Lab Environm Opt & Technol, Hefei 230031, Peoples R China; [Wan, Xin; Cong, Zhiyuan] Chinese Acad Sci, Inst Tibetan Plateau Res, State Key Lab Tibetan Plateau Earth Syst Resource, Beijing 100101, Peoples R China; [Wan, Xin; Kang, Shichang; Cong, Zhiyuan] CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China; [Loewen, Mark] Kathmandu Univ, Kathmandu, Nepal; [Chen, Xintong; Cong, Zhiyuan] Univ Chinese Acad Sci, Beijing 100049, Peoples R China; [Chen, Xintong; Kang, Shichang] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Cryospher Sci, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Xiang, Yan,Zhang, Tianshu,Liu, Jianguo,et al. Vertical profile of aerosols in the Himalayas revealed by lidar: New insights into their seasonal/diurnal patterns, sources, and transport*[J]. 中国科学院西北生态环境资源研究院,2021,285.
APA	Xiang, Yan.,Zhang, Tianshu.,Liu, Jianguo.,Wan, Xin.,Loewen, Mark.,...&Cong, Zhiyuan.(2021).Vertical profile of aerosols in the Himalayas revealed by lidar: New insights into their seasonal/diurnal patterns, sources, and transport*.ENVIRONMENTAL POLLUTION,285.
MLA	Xiang, Yan,et al."Vertical profile of aerosols in the Himalayas revealed by lidar: New insights into their seasonal/diurnal patterns, sources, and transport*".ENVIRONMENTAL POLLUTION 285(2021).