气候变化领域集成服务门户(CCPortal): Resolving the impact of stratosphere-to-troposphere transport on the sulfur cycle and surface ozone over the Tibetan Plateau using a cosmogenic S-35 tracer

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DOI	10.1002/2015JD023801
	Resolving the impact of stratosphere-to-troposphere transport on the sulfur cycle and surface ozone over the Tibetan Plateau using a cosmogenic S-35 tracer
	Lin, Mang; Zhang, Zhisheng; Su, Lin; Hill-Falkenthal, Jason; Priyadarshi, Antra; Zhang, Qianggong; Zhang, Guoshuai; Kang, Shichang; Chan, Chuen-Yu; Thiemens, Mark H.
发表日期	2016
ISSN	2169-897X
EISSN	2169-8996
卷号	121 期号:1
英文摘要	The Himalayas were recently identified as a global hot spot for deep stratosphere-to-troposphere transport (STT) in spring. Although the STT in this region may play a vital role in tropospheric chemistry, the hydrological cycle and aquatic ecosystems in Asia, there is no direct measurement of a chemical stratospheric tracer to verify and evaluate its possible impacts. Here we use cosmogenic S-35 as a tracer for air masses originating in the stratosphere and transported downward. We measure concentrations of S-35 in fresh surface snow and river runoff samples collected from Mount Everest in April 2013 to be more than 10 times higher than previously reported by any surface measurement, in support of the Himalayas as a gateway of springtime STT. In light of this result, measurements of (SO2)-S-35 and (SO42-)-S-35 at Nam Co in spring 2011 are reanalyzed to investigate the magnitudes of stratospheric air masses from the Himalayas to the tropospheric sulfur cycle and surface O-3 level over the Tibetan Plateau. A simple one-box model reveals that the oxidative lifetime of SO2 is reduced in aged STT plumes. Triple oxygen isotopic measurements of sulfate samples suggest that enhanced O-3 levels may shift the oxidation pathway of SO2 in the troposphere, which may be constrained by further intensive sampling and measurements. Comparison with surface O-3 measurements and traditional meteorological tracing methods shows that S-35 is a potentially unique and sensitive tracer to quantify the contribution of stratospheric air to surface O-3 levels in fresh or aged STT plumes.
关键词	radioactive sulfur-35 triple oxygen isotopes stratosphere-troposphere exchange Himalayas Nam Co glacier retreat
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/111857
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	Lin, Mang,Zhang, Zhisheng,Su, Lin,et al. Resolving the impact of stratosphere-to-troposphere transport on the sulfur cycle and surface ozone over the Tibetan Plateau using a cosmogenic S-35 tracer[J]. 中国科学院西北生态环境资源研究院,2016,121(1).
APA	Lin, Mang.,Zhang, Zhisheng.,Su, Lin.,Hill-Falkenthal, Jason.,Priyadarshi, Antra.,...&Thiemens, Mark H..(2016).Resolving the impact of stratosphere-to-troposphere transport on the sulfur cycle and surface ozone over the Tibetan Plateau using a cosmogenic S-35 tracer.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,121(1).
MLA	Lin, Mang,et al."Resolving the impact of stratosphere-to-troposphere transport on the sulfur cycle and surface ozone over the Tibetan Plateau using a cosmogenic S-35 tracer".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 121.1(2016).