气候变化领域集成服务门户(CCPortal): Continuously observed light absorbing impurities in snow cover over the southern Altai Mts. in China: Concentrations, impacts and potential sources

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DOI	10.1016/j.envpol.2020.116234
	Continuously observed light absorbing impurities in snow cover over the southern Altai Mts. in China: Concentrations, impacts and potential sources
	Zhong, Xinyue; Kang, Shichang; Zhang, Wei; Yang, Junhua; Niu, Hewen; Liu, Yajun; Guo, Junming; Li, Xiaofei; Chen, Pengfei; Wang, Xiaoxiang
通讯作者	Kang, SC (通讯作者)，Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Cryospher Sci, Lanzhou 730000, Peoples R China.
发表日期	2021
ISSN	0269-7491
EISSN	1873-6424
卷号	270
英文摘要	The deposition of light absorbing impurities (LAIs) (e.g., black carbon (BC), organic carbon (OC), mineral dust (MD)) on snow is an important attribution to accelerate snowmelt across the northern Xinjiang, China. At present, there is still a lack of understanding of the LAIs concentration, elution and enrichment process in snow cover over Xinjiang. Based on these, continuously sampling during two years carried out to investigate the concentrations, impacts and potential sources of LAIs in snow at Kuwei Station in the southern Altai Mountains. The average concentrations of BC, OC and MD in the surface snow were 2787 +/- 2334 ng g(-1), 6130 +/- 6127 ng g(-1), and 70.03 +/- 62.59 mu g g(-1), respectively, which dramatically increased along with snowmelt intensified, reflecting a significant enrichment process of LAIs at the snow surface. Besides, high LAIs concentrations also found in the subsurface and melting layers of the snowpit, reflecting the elution and redistribution of LAIs. With the simulation of the SNow ICe Aerosol Radiative model, BC was the main dominant factor in reducing snow albedo and radiative forcing (RF), its impact was more remarkable in the snowmelt period. The average contribution rates of BC, MD and BC + MD to snow albedo reduction increased by 20.0 +/- 1.9%, 13.0 +/- 0.2%, and 20.5 +/- 2.3% in spring compared with that in winter; meanwhile, the corresponding average RFs increased by 15.8 +/- 3.4 W m(-2), 4.7 +/- 0.3 W m(-2) and 16.4 +/- 3.2 W m(-2), respectively. Changes in the number of snowmelt days caused by BC and MD decreased by 3.0 +/- 0.4 d to 8.3 +/- 1.3 d. It indicated that surface enrichment of LAIs during snow melting might accelerate snowmelt further. Weather Research and Forecasting Chemistry model showed that the resident emission was the main potential source of BC and OC in snow. This implied that the mitigation of intensive snowmelt needs to mainly reduce resident emission of LAIs in the future. (C) 2020 Elsevier Ltd. All rights reserved.
关键词	BLACK CARBON ELEMENTAL CARBON 3RD POLE ALBEDO GLACIER DUST VARIABILITY AEROSOLS ABSORPTION DEPOSITION
英文关键词	Light absorbing impurities; Enrichment; Radiative forcing; Snowmelt; The southern Altai mountains
语种	英语
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Environmental Sciences
WOS记录号	WOS:000608065400076
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/253920
作者单位	[Zhong, Xinyue] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Key Lab Remote Sensing Gansu Prov, Lanzhou 730000, Peoples R China; [Kang, Shichang; Zhang, Wei; Yang, Junhua; Niu, Hewen; Liu, Yajun; Guo, Junming; Chen, Pengfei; Wang, Xiaoxiang] Chinese Acad Sci, State Key Lab Cryospher Sci, Northwest Inst Ecoenvironm & Resources, Lanzhou 730000, Peoples R China; [Kang, Shichang] CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China; [Kang, Shichang] Univ Chinese Acad Sci, Beijing 100049, Peoples R China; [Li, Xiaofei] Shaanxi Univ Sci & Technol, Sch Environm Sci & Engn, Xian 710021, Peoples R China
推荐引用方式 GB/T 7714	Zhong, Xinyue,Kang, Shichang,Zhang, Wei,et al. Continuously observed light absorbing impurities in snow cover over the southern Altai Mts. in China: Concentrations, impacts and potential sources[J]. 中国科学院西北生态环境资源研究院,2021,270.
APA	Zhong, Xinyue.,Kang, Shichang.,Zhang, Wei.,Yang, Junhua.,Niu, Hewen.,...&Wang, Xiaoxiang.(2021).Continuously observed light absorbing impurities in snow cover over the southern Altai Mts. in China: Concentrations, impacts and potential sources.ENVIRONMENTAL POLLUTION,270.
MLA	Zhong, Xinyue,et al."Continuously observed light absorbing impurities in snow cover over the southern Altai Mts. in China: Concentrations, impacts and potential sources".ENVIRONMENTAL POLLUTION 270(2021).