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DOI	10.1016/j.accre.2021.11.007
	CH4 and CO2 observations from a melting high mountain glacier, Laohugou Glacier No. 12
	DU, Zhi-Heng; Wang, Lei; Wei, Zhi-Qiang; Liu, Jing-Feng; Lin, Peng-Lin; Lin, Jia-Hui; LI, Yan-Zhao; Jin, Zi-Zhen; Chen, Ji-Zu; Wang, Xiao-Xiang; Qin, Xiang; Xiao, Cun-De
通讯作者	Wei, ZQ (通讯作者)，Beijing Normal Univ, Zhuhai Branch State Key Lab Earth Surface Proc &, Zhuhai 519087, Peoples R China.
发表日期	2022
ISSN	1674-9278
起始页码	146
结束页码	155
卷号	13 期号:1
英文摘要	With global warming, glaciers in the high mountains of China are retreating rapidly. However, few data have been reported on whether greenhouse gases from these glaciers are released into the atmosphere or absorbed by glacial meltwater. In this study, we collected meltwater and ice samples from Laohugou Glacier No. 12 in western China and measured CH4 and CO2 concentrations. Meltwater from the glacier terminus was continually sampled between 3 and 5 August 2020 to measure CH4 and CO2 concentrations. The results demonstrated that meltwater is a source of CH4 because the average saturations are over 100%. It could be concluded that CH4 in the atmosphere can be released by glacial meltwater. However, the CO2 saturations are various, and CO2 fluxes exhibit positive (released CO2) or negative (absorbed CO2) values because the water and atmospheric conditions are variable. More importantly, the CH4 and CO2 concentrations were higher in meltwater samples from the glacier terminus than in samples from the surface ice (including an ice core) and a surface stream. Although the meltwater effect from the upper part of the glacier cannot be excluded, we speculated that subglacial drainage systems with an anaerobic environment may represent the CH4 source, but it needs to be further investigated in the future. However, high mountain glaciers are currently ignored in global carbon budgets, and the increased melting of glaciers with global warming may accelerate the absorption of much more CO2 and lead to the release of CH4.
关键词	DISSOLVED ORGANIC-CARBON LIGHT-ABSORPTION CHARACTERISTICS SINK BENEATH METHANE ICE RESERVOIRS RELEASE CHINA SHAN FLUX
英文关键词	CO2; CH4; Source and sink; Subglacial drainage systems; Laohugou glacier No. 12
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
WOS类目	Environmental Sciences ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:000777167800014
来源期刊	ADVANCES IN CLIMATE CHANGE RESEARCH
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/254362
作者单位	[DU, Zhi-Heng; Chen, Ji-Zu; Wang, Xiao-Xiang] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Cryospher Sci, Lanzhou 730000, Peoples R China; [Wang, Lei; Lin, Jia-Hui; Xiao, Cun-De] Beijing Normal Univ, State Key Lab Earth Surface Proc & Resource Ecol, Beijing 100875, Peoples R China; [Wei, Zhi-Qiang] Beijing Normal Univ, Zhuhai Branch State Key Lab Earth Surface Proc &, Zhuhai 519087, Peoples R China; [Liu, Jing-Feng; Lin, Peng-Lin] Northwest Normal Univ, Coll Geog & Environm Sci, Lanzhou 730000, Peoples R China; [LI, Yan-Zhao; Jin, Zi-Zhen; Qin, Xiang] Chinese Acad Sci, Qilian Shan Stn Glaciol & Ecol Environm, State Key Lab Cryospher Sci, Northwest Inst Ecoenvironm & Resources, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	DU, Zhi-Heng,Wang, Lei,Wei, Zhi-Qiang,et al. CH4 and CO2 observations from a melting high mountain glacier, Laohugou Glacier No. 12[J]. 中国科学院西北生态环境资源研究院,2022,13(1).
APA	DU, Zhi-Heng.,Wang, Lei.,Wei, Zhi-Qiang.,Liu, Jing-Feng.,Lin, Peng-Lin.,...&Xiao, Cun-De.(2022).CH4 and CO2 observations from a melting high mountain glacier, Laohugou Glacier No. 12.ADVANCES IN CLIMATE CHANGE RESEARCH,13(1).
MLA	DU, Zhi-Heng,et al."CH4 and CO2 observations from a melting high mountain glacier, Laohugou Glacier No. 12".ADVANCES IN CLIMATE CHANGE RESEARCH 13.1(2022).