气候变化领域集成服务门户(CCPortal): Two modes of change in Southern Ocean productivity over the past million years

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DOI	10.1126/science.1227545
	Two modes of change in Southern Ocean productivity over the past million years
	Jaccard S.L.; Hayes C.T.; Martínez-García A.; Hodell D.A.; Anderson R.F.; Sigman D.M.; Haug G.H.
发表日期	2013
ISSN	0036-8075
起始页码	1419
结束页码	1423
卷号	339 期号:6126
英文摘要	Export of organic carbon from surface waters of the Antarctic Zone of the Southern Ocean decreased during the last ice age, coinciding with declining atmospheric carbon dioxide (CO2) concentrations, signaling reduced exchange of CO2 between the ocean interior and the atmosphere. In contrast, in the Subantarctic Zone, export production increased into ice ages coinciding with rising dust fluxes, thus suggesting iron fertilization of subantarctic phytoplankton. Here, a new high-resolution productivity record from the Antarctic Zone is compiled with parallel subantarctic data over the past million years. Together, they fit the view that the combination of these two modes of Southern Ocean change determines the temporal structure of the glacial-interglacial atmospheric CO2 record, including during the interval of "lukewarm" interglacials between 450 and 800 thousand years ago.
英文关键词	carbon dioxide; air-sea interaction; atmospheric chemistry; carbon dioxide; carbon flux; concentration (composition); glacial-interglacial cycle; iron; net ecosystem production; organic carbon; paleoceanography; phytoplankton; Pleistocene; subantarctic region; surface water; Antarctica; article; climate change; glacial period; greenhouse effect; human; interglacial; priority journal; sea; Southern Ocean
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/244129
作者单位	Geological Institute, Department of Earth Sciences, ETH Zurich, Zurich, Switzerland; Lamont-Doherty Earth Observatory, Columbia University, Palisades, NY, United States; Godwin Laboratory for Paleoclimate Research, Department of Earth Sciences, University of Cambridge, Cambridge, United Kingdom; Department of Geosciences, Princeton University, Princeton, NJ, United States; Department of Earth and Environmental Sciences, Columbia University, New York, NY, United States
推荐引用方式 GB/T 7714	Jaccard S.L.,Hayes C.T.,Martínez-García A.,et al. Two modes of change in Southern Ocean productivity over the past million years[J],2013,339(6126).
APA	Jaccard S.L..,Hayes C.T..,Martínez-García A..,Hodell D.A..,Anderson R.F..,...&Haug G.H..(2013).Two modes of change in Southern Ocean productivity over the past million years.Science,339(6126).
MLA	Jaccard S.L.,et al."Two modes of change in Southern Ocean productivity over the past million years".Science 339.6126(2013).