气候变化领域集成服务门户(CCPortal): Cosmogenic S-35 measurements in the Tibetan Plateau to quantify glacier snowmelt

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DOI	10.1002/2013JD019801
	Cosmogenic S-35 measurements in the Tibetan Plateau to quantify glacier snowmelt
	Priyadarshi, Antra; Hill-Falkenthal, Jason; Thiemens, Mark; Zhang, Zhisheng; Lin, Mang; Chan, Chuen-yu; Kang, Shichang
发表日期	2014
EISSN	2169-8996
卷号	119 期号:7
英文摘要	The cosmogenic radionuclide S-35 (t(1/2) similar to 87 days) is a unique tracer for high-altitude air mass and has been used extensively to understand stratospheric air mass mixing. In this paper, we investigate if S-35 can be utilized as an independent tracer to quantify glacier melt. We report the first measurements of S-35 in samples collected from the Tibetan Plateau during 2009-2012 with an aim to interpret S-35 in atmospheric particles and their deposition over glacier and snowmelts. Our measurements show that S-35 activity in the aerosol phase varies from 116 +/- 13 to 2229 +/- 52 atoms/m(3) resulting in higher values during winter-spring and lower values during summer-autumn. This seasonality is likely due to higher mixing of S-35-rich stratospheric air masses during winter-spring and S-35-poor air masses from the Bay of Bengal during the Asian summer monsoon. The average S-35 activity in the Zhadang glacier was found to be 3-8 times higher relative to the nearby lake water. The main source of S-35 activity in the Zhadang glacier is atmospheric deposition, whereas both atmospheric deposition and glacier snowmelt are the primary sources in the Nam Co Lake. The focus of this study is to quantitatively determine the spatial and temporal variations in glacier snowmelt. In the future, extensive sampling of aerosols and snow is required for determining S-35 in combination with stable oxygen isotopes in sulfate to better understand the glacier melt process and hydrological cycle on the Tibetan Plateau.
关键词	Tibetan glacier melt Nam Co lake climate change Cosmogenic Sulfur-35
学科领域	Meteorology & Atmospheric Sciences
语种	英语
WOS研究方向	Meteorology & Atmospheric Sciences
来源期刊	JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
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/111721
作者单位	Univ Calif San Diego, Dept Chem & Biochem, La Jolla, CA 92093 USA
推荐引用方式 GB/T 7714	Priyadarshi, Antra,Hill-Falkenthal, Jason,Thiemens, Mark,et al. Cosmogenic S-35 measurements in the Tibetan Plateau to quantify glacier snowmelt[J]. 中国科学院西北生态环境资源研究院,2014,119(7).
APA	Priyadarshi, Antra.,Hill-Falkenthal, Jason.,Thiemens, Mark.,Zhang, Zhisheng.,Lin, Mang.,...&Kang, Shichang.(2014).Cosmogenic S-35 measurements in the Tibetan Plateau to quantify glacier snowmelt.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,119(7).
MLA	Priyadarshi, Antra,et al."Cosmogenic S-35 measurements in the Tibetan Plateau to quantify glacier snowmelt".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 119.7(2014).