气候变化领域集成服务门户(CCPortal): Archaeological climate proxies and the complexities of reconstructing Holocene El Niño in coastal Peru

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DOI	10.1073/pnas.1912242117
	Archaeological climate proxies and the complexities of reconstructing Holocene El Niño in coastal Peru
	Sandweiss D.H.; Fred T Andrus C.; Kelley A.R.; Maasch K.A.; Reitz E.J.; Roscoe P.B.
发表日期	2020
ISSN	0027-8424
起始页码	8271
结束页码	8279
卷号	117 期号:15
英文摘要	Archaeological evidence plays a key role in longitudinal studies of humans and climate. Climate proxy data from Peruvian archaeological sites provide a case study through insight into the history of the “flavors” or varieties of El Niño (EN) events after ∼11 ka: eastern Pacific EN, La Niña, coastal EN (COA), and central Pacific or Modoki EN (CP). Archaeological proxies are important to the coastal Peruvian case because more commonly used paleoclimate proxies are unavailable or equivocal. Previously, multiproxy evidence from the Peruvian coast and elsewhere suggested that EN frequency varied over the Holocene: 1) present in the Early Holocene; 2) absent or very low frequency during the Middle Holocene (∼9 to 6 ka); 3) low after ∼6 ka; and 4) rapidly increasing frequency after 3 ka. Despite skepticism about the reliability of archaeological proxies, nonarchaeological proxies seemed to confirm this archaeological EN reconstruction. Although there is consensus that EN frequency varied over this period, some nonarchaeological and archaeological proxies call parts of this reconstruction into question. Here we review Holocene EN frequency reconstructions for the Peruvian coast, point to complexities introduced by apparent contradictions in a range of proxy records, consider the impact of CP and COA phenomena, and assess the merits of archaeological proxies in EN reconstructions. Reconciling Peruvian coastal paleoclimate data is critical for testing models of future EN behavior under climate variability. © 2020 National Academy of Sciences. All rights reserved.
英文关键词	Archaeology; Climate proxies; El Niño; Holocene; Peru
语种	英语
scopus关键词	archeology; climate change; consensus; Holocene; human; longitudinal study; paleoclimate; Peru; reliability; review; seashore; article
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/160988
作者单位	Sandweiss, D.H., Department of Anthropology, University of Maine, Orono, ME 04469, United States, Climate Change Institute, University of Maine, Orono, ME 04469, United States; Fred T Andrus, C., Department of Geological Sciences, University of Alabama, Tuscaloosa, AL 35487, United States; Kelley, A.R., Climate Change Institute, University of Maine, Orono, ME 04469, United States, School of Earth and Climate Sciences, University of Maine, Orono, ME 04469, United States; Maasch, K.A., Climate Change Institute, University of Maine, Orono, ME 04469, United States, School of Earth and Climate Sciences, University of Maine, Orono, ME 04469, United States; Reitz, E.J., Georgia Museum of Natural History, University of Georgia, Athens, GA 30602, United States; Roscoe, P.B., Department of Anthropology, University of Maine, Orono, ME 04469, United States, Climate Change Institute, University of Maine, Orono, ME 04469, United States
推荐引用方式 GB/T 7714	Sandweiss D.H.,Fred T Andrus C.,Kelley A.R.,et al. Archaeological climate proxies and the complexities of reconstructing Holocene El Niño in coastal Peru[J],2020,117(15).
APA	Sandweiss D.H.,Fred T Andrus C.,Kelley A.R.,Maasch K.A.,Reitz E.J.,&Roscoe P.B..(2020).Archaeological climate proxies and the complexities of reconstructing Holocene El Niño in coastal Peru.Proceedings of the National Academy of Sciences of the United States of America,117(15).
MLA	Sandweiss D.H.,et al."Archaeological climate proxies and the complexities of reconstructing Holocene El Niño in coastal Peru".Proceedings of the National Academy of Sciences of the United States of America 117.15(2020).