气候变化领域集成服务门户(CCPortal): Distributions and light absorption property of water soluble organic carbon in a typical temperate glacier, southeastern Tibetan Plateau

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DOI	10.1080/16000889.2018.1468705
	Distributions and light absorption property of water soluble organic carbon in a typical temperate glacier, southeastern Tibetan Plateau
	Niu, Hewen; Kang, Shichang; Lu, Xixi; Shi, Xiaofei
发表日期	2018
ISSN	1600-0889
卷号	70
英文摘要	Water-soluble organic carbon (WSOC) widely stored in glaciers from local and distant sources, and then released it to downstream environments under a warming climate. Climatic driven changes to glacial run-off are larger and represent an important flux of organic carbon. However, very few WSOC data are currently available to fully characterize WSOC variation in the temperate glacierized regions of the Tibetan Plateau (TP). This study first systematically evaluated the concentration characteristics and light absorbing property of WSOC, and insoluble particulate carbon (IPC) in snow and ice of a typical temperate glacier on Mt. Yulong. Average concentrations of WSOC were 0.610.21mg L-1 in Baishui glacier on Mt. Yulong. WSOC concentrations in surface aged snow were dramatically decreased with the time extension during the entire monsoon season due to extensive glacial melting and scavenging effects by meltwater.The MAC values of WSOC calculated at 365nm was 6.31 +/- 0.34 m(2) g(-1) on Mt. Yulong, and there exists distinct spectral dependence of MAC(wsoc) within the wavelength range (260-700nm). The low AAE(330-400) values suggest the light absorption of WSOC is more spectrally neutral. The flux of WSOC in Baishui glacier was 0.99 gC m(-2)yr(-1), while the IPC flux was 4.77 gC m(-2)yr(-1). Total WSOC storage in the Baishui glacier was estimated to be 1.5 tone C and total IPC storage was 7.25 tone C (1 tone =10(6)g). Moreover, glacial melting was reinforced by the soluble and insoluble light absorbing impurities (ILAIs) in glaciers, Baishui glacier can be considered as a fraction of carbon source under the scenario of a warming climate, more importantly, WSOC in snow and ice needs to be taken into account in calculating the radiative forcing of ILAIs and accelerating glacial melting.
关键词	flux glacier Mt Yulong Tibetan Plateau WSOC
学科领域	Meteorology & Atmospheric Sciences
语种	英语
WOS研究方向	Meteorology & Atmospheric Sciences
来源期刊	TELLUS SERIES B-CHEMICAL AND PHYSICAL METEOROLOGY
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/111960
作者单位	Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Cryospher Sci, Yulong Snow Mt Glacier Environm Observat & Res St, Lanzhou, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Niu, Hewen,Kang, Shichang,Lu, Xixi,et al. Distributions and light absorption property of water soluble organic carbon in a typical temperate glacier, southeastern Tibetan Plateau[J]. 中国科学院西北生态环境资源研究院,2018,70.
APA	Niu, Hewen,Kang, Shichang,Lu, Xixi,&Shi, Xiaofei.(2018).Distributions and light absorption property of water soluble organic carbon in a typical temperate glacier, southeastern Tibetan Plateau.TELLUS SERIES B-CHEMICAL AND PHYSICAL METEOROLOGY,70.
MLA	Niu, Hewen,et al."Distributions and light absorption property of water soluble organic carbon in a typical temperate glacier, southeastern Tibetan Plateau".TELLUS SERIES B-CHEMICAL AND PHYSICAL METEOROLOGY 70(2018).