气候变化领域集成服务门户(CCPortal): Constraints on the late Holocene anthropogenic contribution to the atmospheric methane budget

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DOI	10.1126/science.1238920
	Constraints on the late Holocene anthropogenic contribution to the atmospheric methane budget
	Mitchell L.; Brook E.; Lee J.E.; Buizert C.; Sowers T.
发表日期	2013
ISSN	0036-8075
起始页码	964
结束页码	966
卷号	342 期号:6161
英文摘要	The origin of the late preindustrial Holocene (LPIH) increase in atmospheric methane concentrations has been much debated. Hypotheses invoking changes in solely anthropogenic sources or solely natural sources have been proposed to explain the increase in concentrations. Here two high-resolution, high-precision ice core methane concentration records from Greenland and Antarctica are presented and are used to construct a high-resolution record of the methane inter-polar difference (IPD). The IPD record constrains the latitudinal distribution of emissions and shows that LPIH emissions increased primarily in the tropics, with secondary increases in the subtropical Northern Hemisphere. Anthropogenic and natural sources have different latitudinal characteristics, which are exploited to demonstrate that both anthropogenic and natural sources are needed to explain LPIH changes in methane concentration.
英文关键词	ice; methane; methane; anthropogenic source; Holocene; ice core; latitudinal gradient; methane; Northern Hemisphere; Antarctica; article; atmospheric dispersion; Greenland; Late Holocene; latitude; Northern Hemisphere; priority journal; tropics; agriculture; atmosphere; chemistry; human; ice cover; industry; rice; trends; Antarctica; Arctic; Greenland; Agriculture; Antarctic Regions; Atmosphere; Greenland; Humans; Ice Cover; Industry; Methane; Oryza sativa
语种	英语
来源期刊	Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/244793
作者单位	College of Earth, Ocean, and Atmospheric Sciences, Oregon State University, Corvallis, OR 97331, United States; Department of Geosciences and Earth and Environmental Systems Institute, Pennsylvania State University, University Park, PA 16802, United States
推荐引用方式 GB/T 7714	Mitchell L.,Brook E.,Lee J.E.,et al. Constraints on the late Holocene anthropogenic contribution to the atmospheric methane budget[J],2013,342(6161).
APA	Mitchell L.,Brook E.,Lee J.E.,Buizert C.,&Sowers T..(2013).Constraints on the late Holocene anthropogenic contribution to the atmospheric methane budget.Science,342(6161).
MLA	Mitchell L.,et al."Constraints on the late Holocene anthropogenic contribution to the atmospheric methane budget".Science 342.6161(2013).