globalchange  > 气候减缓与适应
DOI: 10.1038/ngeo2608
论文题名:
Links between tropical Pacific seasonal, interannual and orbital variability during the Holocene
作者: Emile-Geay J.; Cobb K.M.; Carre M.; Braconnot P.; Leloup J.; Zhou Y.; Harrison S.P.; Corrège T.; McGregor H.V.; Collins M.; Driscoll R.; Elliot M.; Schneider B.; Tudhope A.
刊名: Nature Geoscience
ISSN: 17520894
出版年: 2016
卷: 9, 期:2
起始页码: 168
结束页码: 173
语种: 英语
Scopus关键词: climate modeling ; climate variation ; coral ; El Nino-Southern Oscillation ; Holocene ; insolation ; mollusc ; orbital forcing ; reconstruction ; sea surface temperature ; seasonality ; spatiotemporal analysis ; Pacific Ocean ; Pacific Ocean (Tropical) ; Anthozoa ; Mollusca
英文摘要: The El Ninõ/Southern Oscillation (ENSO) is the leading mode of interannual climate variability. However, it is unclear how ENSO has responded to external forcing, particularly orbitally induced changes in the amplitude of the seasonal cycle during the Holocene. Here we present a reconstruction of seasonal and interannual surface conditions in the tropical Pacific Ocean from a network of high-resolution coral and mollusc records that span discrete intervals of the Holocene. We identify several intervals of reduced variance in the 2 to 7 yr ENSO band that are not in phase with orbital changes in equatorial insolation, with a notable 64% reduction between 5,000 and 3,000 years ago. We compare the reconstructed ENSO variance and seasonal cycle with that simulated by nine climate models that include orbital forcing, and find that the models do not capture the timing or amplitude of ENSO variability, nor the mid-Holocene increase in seasonality seen in the observations; moreover, a simulated inverse relationship between the amplitude of the seasonal cycle and ENSO-related variance in sea surface temperatures is not found in our reconstructions.We conclude that the tropical Pacific climate is highly variable and subject to millennial scale quiescent periods. These periods harbour no simple link to orbital forcing, and are not adequately simulated by the current generation of models. © 2016 Macmillan Publishers Limited.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/106072
Appears in Collections:气候减缓与适应
科学计划与规划

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作者单位: Department of Earth Sciences, University of Southern California, Los Angeles, CA, United States; School of Earth and Atmospheric Sciences, Georgia Institute of Technology, Atlanta, GA, United States; Institut des Sciences de l'Evolution, Université de Montpellier, EPHE, Montpellier, France; IPSL, LSCE, Gif sur Yvette, France; Sorbonne Universités, LOCEAN, IPSL, Paris, France; Centre for Past Climate Change, School of Archaeology, Geography and Environmental Sciences, University of Reading, Whiteknights, Reading, United Kingdom; Université Bordeaux, Pessac Cedex, France; School of Earth and Environmental Sciences, University of Wollongong, Wollongong, NSW, Australia; College of Engineering, Mathematics and Physical Sciences, University of Exeter, North Park Road, Exeter, United Kingdom; University of Edinburgh, School of GeoSciences, James Hutton Road, Edinburgh, United Kingdom; Paleoclimats Paleoenvironnements Bioindicateurs, Université de Nantes, 2 rue de la Houssinière, Nantes, France; Institut für Geowissenschaften, Universität Kiel, Kiel, Germany

Recommended Citation:
Emile-Geay J.,Cobb K.M.,Carre M.,et al. Links between tropical Pacific seasonal, interannual and orbital variability during the Holocene[J]. Nature Geoscience,2016-01-01,9(2)
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