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Vertical profile of aerosols in the Himalayas revealed by lidar: New insights into their seasonal/diurnal patterns, sources, and transport*
Xiang, Yan1; Zhang, Tianshu1,2; Liu, Jianguo2; Wan, Xin3,4; Loewen, Mark5; Chen, Xintong6,7; Kang, Shichang4,7; Fu, Yibin2; Lv, Lihui1; Liu, Wenqing1,2; Cong, Zhiyuan3,4,6
2021-09-15
Source PublicationENVIRONMENTAL POLLUTION
ISSN0269-7491
Corresponding AuthorCong, Zhiyuan(zhiyuancong@itpcas.ac.cn)
AbstractAtmospheric 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.
KeywordAerosol Lidar Vertical  profile Black carbon Transport
DOI10.1016/j.envpol.2021.117686
WOS KeywordBOUNDARY-LAYER HEIGHT ; TIBETAN PLATEAU ; BLACK CARBON ; OPTICAL-PROPERTIES ; 3RD POLE ; ATMOSPHERIC-POLLUTION ; EMISSION INVENTORY ; CRYOSPHERIC CHANGE ; SOURCE REGIONS ; PM2.5
Indexed BySCI
Language英语
Funding ProjectSecond Tibetan Plateau Scientific Expedition and Research Program (STEP)[2019QZKK0605] ; Strategic Priority Research Program of the Chinese Academy of Science[XDA2004050103] ; National Natural Science Foundation of China[42005106] ; National Natural Science Foundation of China[41941011] ; MOST[2018YFC0213101] ; MOST[2018YFC0213201] ; Natural Science Foundation of Anhui Province, China[1908085QD160] ; Natural Science Foundation of Anhui Province, China[1908085QD170] ; Major Sci-ence and Technology Project of Anhui Province[18030801111] ; Doctoral Scientific Research Foundation of Anhui University[Y040418190]
Funding OrganizationSecond Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Strategic Priority Research Program of the Chinese Academy of Science ; National Natural Science Foundation of China ; MOST ; Natural Science Foundation of Anhui Province, China ; Major Sci-ence and Technology Project of Anhui Province ; Doctoral Scientific Research Foundation of Anhui University
WOS Research AreaEnvironmental Sciences & Ecology
WOS SubjectEnvironmental Sciences
WOS IDWOS:000685348100006
PublisherELSEVIER SCI LTD
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.hfcas.ac.cn:8080/handle/334002/124408
Collection中国科学院合肥物质科学研究院
Corresponding AuthorCong, Zhiyuan
Affiliation1.Anhui Univ, Inst Phys Sci, Hefei 230601, Peoples R China
2.Chinese Acad Sci, Anhui Inst Opt & Fine Mech, Key Lab Environm Opt & Technol, Hefei 230031, Peoples R China
3.Chinese Acad Sci, Inst Tibetan Plateau Res, State Key Lab Tibetan Plateau Earth Syst Resource, Beijing 100101, Peoples R China
4.CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China
5.Kathmandu Univ, Kathmandu, Nepal
6.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
7.Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Cryospher Sci, Lanzhou 730000, Peoples R China
Recommended Citation
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]. ENVIRONMENTAL POLLUTION,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).
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