气候变化领域集成服务门户(CCPortal): Abrupt tropical climate change: Past and present

CCPortal

DOI	10.1073/pnas.0603900103
	Abrupt tropical climate change: Past and present
	Thompson L.G.; Mosley-Thompson E.; Brecher H.; Davis M.; León B.; Les D.; Lin P.-N.; Mashiotta T.; Mountain K.
发表日期	2006
ISSN	0027-8424
起始页码	10536
结束页码	10543
卷号	103 期号:28
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.
英文关键词	Holocene; Icecore; Isotopes; Paleoclimate; Precipitation
语种	英语
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
来源期刊	Proceedings of the National Academy of Sciences of the United States of America
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/159187
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...
推荐引用方式 GB/T 7714	Thompson L.G.,Mosley-Thompson E.,Brecher H.,et al. Abrupt tropical climate change: Past and present[J],2006,103(28).
APA	Thompson L.G..,Mosley-Thompson E..,Brecher H..,Davis M..,León B..,...&Mountain K..(2006).Abrupt tropical climate change: Past and present.Proceedings of the National Academy of Sciences of the United States of America,103(28).
MLA	Thompson L.G.,et al."Abrupt tropical climate change: Past and present".Proceedings of the National Academy of Sciences of the United States of America 103.28(2006).