气候变化领域集成服务门户(CCPortal): Solar modulation of little ice age climate in the tropical andes

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DOI	10.1073/pnas.0603118103
	Solar modulation of little ice age climate in the tropical andes
	Polissar P.J.; Abbott M.B.; Wolfe A.P.; Bezada M.; Rull V.; Bradley R.S.
发表日期	2006
ISSN	0027-8424
起始页码	8937
结束页码	8942
卷号	103 期号:24
英文摘要	The underlying causes of late-Holocene climate variability in the tropics are incompletely understood. Here we report a 1,500-year reconstruction of climate history and glaciation in the Venezuelan Andes using lake sediments. Four glacial advances occurred between anno Domini (A.D.) 1250 and 1810, coincident with solar-activity minima. Temperature declines of -3.2 ± 1.4°C and precipitation increases of ≈20% are required to produce the observed glacial responses. These results highlight the sensitivity of high-altitude tropical regions to relatively small changes in radiative forcing, implying even greater probable responses to future anthropogenic forcing. © 2006 by The National Academy of Sciences of the USA.
英文关键词	Climate forcing; Glacier reconstruction; Moisture balance; Venezuela
语种	英语
scopus关键词	altitude; article; climate change; environmental temperature; lake sediment; Late Holocene; precipitation; priority journal; tropics; Venezuela; Climate; Geologic Sediments; Ice Cover; Models, Theoretical; Sunlight; Temperature; Tropical Climate; Venezuela
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/159189
作者单位	Polissar, P.J., Department of Geosciences, Morrill Science Center, University of Massachusetts, Amherst, MA 01003, United States, Department of Geosciences, 411 Deike Building, Pennsylvania State University, University Park, PA 16802, United States; Abbott, M.B., Geology and Planetary Science, University of Pittsburgh, Pittsburgh, PA 15260, United States; Wolfe, A.P., Department of Earth and Atmospheric Sciences, University of Alberta, Edmonton, Alta. T6G 2E3, Canada; Bezada, M., Departamento de Ciencias de la Tierra, Universidad Pedagógica Experimental Libertador, Avenida Paez, El Paraíso, Caracas, Venezuela; Rull, V., Departament de Biologia Animal, Vegetal, i Ecologia, Universitat Autònoma de Barcelona, 08193 Bellaterra, Barcelona, Spain; Bradley, R.S., Department of Geosciences, Morrill Science Center, University of Massachusetts, Amherst, MA 01003, United States
推荐引用方式 GB/T 7714	Polissar P.J.,Abbott M.B.,Wolfe A.P.,et al. Solar modulation of little ice age climate in the tropical andes[J],2006,103(24).
APA	Polissar P.J.,Abbott M.B.,Wolfe A.P.,Bezada M.,Rull V.,&Bradley R.S..(2006).Solar modulation of little ice age climate in the tropical andes.Proceedings of the National Academy of Sciences of the United States of America,103(24).
MLA	Polissar P.J.,et al."Solar modulation of little ice age climate in the tropical andes".Proceedings of the National Academy of Sciences of the United States of America 103.24(2006).