气候变化领域集成服务门户(CCPortal): Pronounced climatic variations in Alaska during the last two millennia

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DOI	10.1073/pnas.181333798
	Pronounced climatic variations in Alaska during the last two millennia
	Feng Sheng Hu; Ito E.; Brown T.A.; Curry B.B.; Engstrom D.R.
发表日期	2001
ISSN	0027-8424
起始页码	10552
结束页码	10556
卷号	98 期号:19
英文摘要	Paired oxygen-isotopic analyses of abiotic carbonate and benthicostracode shells from lake sediments provide a continuous quantitative record of growing-season temperature for the past 2000 years in the northwestern foothills of the Alaska Range. This record reveals three time intervals of comparable warmth: anno Domini (A.D.) 0-300, 850-1200, and post-1800, the latter two of which correspond to the Medieval Climatic Anomaly and climatic amelioration after the end of the Little Ice Age. The Little Ice Age culminated at A.D. 1700, when the climate was ≈ 1.7°C colder than at present. A marked climatic cooling also occurred around A.D. 600, coinciding with extensive glacial advances in Alaska. Comparisons of this temperature record with ostracode trace-element ratios (Mg/Ca, Sr/Ca) further suggest that colder periods were wetter and vice versa during the past 2000 years.
语种	英语
scopus关键词	calcium; carbonic acid; magnesium; strontium; arctic climate; article; benthos; chemical analysis; environmental temperature; history; lake; priority journal; sediment; United States
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/159205
作者单位	Feng Sheng Hu, Department of Plant Biology, University of Illinois, Urbana, IL 61801, United States; Ito, E., Department of Plant Biology, University of Illinois, Urbana, IL 61801, United States; Brown, T.A., Department of Plant Biology, University of Illinois, Urbana, IL 61801, United States; Curry, B.B., Department of Plant Biology, University of Illinois, Urbana, IL 61801, United States; Engstrom, D.R., Department of Plant Biology, University of Illinois, Urbana, IL 61801, United States
推荐引用方式 GB/T 7714	Feng Sheng Hu,Ito E.,Brown T.A.,et al. Pronounced climatic variations in Alaska during the last two millennia[J],2001,98(19).
APA	Feng Sheng Hu,Ito E.,Brown T.A.,Curry B.B.,&Engstrom D.R..(2001).Pronounced climatic variations in Alaska during the last two millennia.Proceedings of the National Academy of Sciences of the United States of America,98(19).
MLA	Feng Sheng Hu,et al."Pronounced climatic variations in Alaska during the last two millennia".Proceedings of the National Academy of Sciences of the United States of America 98.19(2001).