globalchange  > 气候变化与战略
DOI: 10.1073/pnas.0603900103
论文题名:
Abrupt tropical climate change: Past and present
作者: Thompson L.G.; Mosley-Thompson E.; Brecher H.; Davis M.; León B.; Les D.; Lin P.-N.; Mashiotta T.; Mountain K.
刊名: Proceedings of the National Academy of Sciences of the United States of America
ISSN: 0027-8424
出版年: 2006
卷: 103, 期:28
起始页码: 10536
结束页码: 10543
语种: 英语
英文关键词: Holocene ; Icecore ; Isotopes ; Paleoclimate ; Precipitation
Scopus关键词: carbon 14 ; fresh water ; ice ; article ; civilization ; climate change ; environmental exposure ; glacier ; greenhouse effect ; Holocene ; ice core record ; latitude ; mass ; paleoclimate ; plant ; precipitation ; priority journal ; sea level rise ; tropic climate ; tropics ; water supply ; wetland ; Greenhouse Effect ; Humans ; Natural History ; Tropical Climate
英文摘要: Three lines of evidence for abrupt tropical climate change, both past and present, are presented. First, annually and decadally averaged δ18O and net mass-balance histories for the last 400 and 2,000 yr, respectively, demonstrate that the current warming at high elevations in the mid- to low latitudes is unprecedented for at least the last 2 millennia. Second, the continuing retreat of most mid- to low-latitude glaciers, many having persisted for thousands of years, signals a recent and abrupt change in the Earth's climate system. Finally, rooted, soft-bodied wetland plants, now exposed along the margins as the Quelccaya ice cap (Peru) retreats, have been radiocarbon dated and, when coupled with other widespread proxy evidence, provide strong evidence for an abrupt mid-Holocene climate event that marked the transition from early Holocene (pre-5,000-yr-B.P.) conditions to cooler, late Holocene (post-5,000-yr-B.P.) conditions. This abrupt event, ≈5,200 yr ago, was wide-spread and spatially coherent through much of the tropics and was coincident with structural changes in several civilizations. These three lines of evidence argue that the present warming and associated glacier retreat are unprecedented in some areas for at least 5,200 yr. The ongoing global-scale, rapid retreat of mountain glaciers is not only contributing to global sea-level rise but also threatening freshwater supplies in many of the world's most populous regions. © 2006 by The National Academy of Sciences of the USA.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/162476
Appears in Collections:气候变化与战略

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作者单位: Thompson, L.G., Byrd Polar Research Center, Ohio State University, Columbus, OH 43210, United States, Department of Geological Sciences, Ohio State University, Columbus, OH 43210, United States; Mosley-Thompson, E., Byrd Polar Research Center, Ohio State University, Columbus, OH 43210, United States, Department of Geography, Ohio State University, Columbus, OH 43210, United States; Brecher, H., Byrd Polar Research Center, Ohio State University, Columbus, OH 43210, United States; Davis, M., Byrd Polar Research Center, Ohio State University, Columbus, OH 43210, United States; León, B., Herbarium, Plant Resources Center, University of Texas, Austin, TX 78712, United States; Les, D., Department of Ecology and Evolutionary Biology, University of Connecticut, Storrs, CT 06269, United States; Lin, P.-N., Byrd Polar Research Center, Ohio State University, Columbus, OH 43210, United States; Mashiotta, T., Byrd Polar Research Center, Ohio State University, Columbus, OH 43210, United States; Mountain, K., Department of Geography and Geosciences, University of Louisville, Louisville, KY 40292, United States

Recommended Citation:
Thompson L.G.,Mosley-Thompson E.,Brecher H.,et al. Abrupt tropical climate change: Past and present[J]. Proceedings of the National Academy of Sciences of the United States of America,2006-01-01,103(28)
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