globalchange  > 气候减缓与适应
DOI: 10.1038/ngeo1924
论文题名:
Air-sea temperature decoupling in western Europe during the last interglacial-glacial transition
作者: Sánchez Goñi M.F.; Bard E.; Landais A.; Rossignol L.; D'errico F.
刊名: Nature Geoscience
ISSN: 17520894
出版年: 2013
卷: 6, 期:10
起始页码: 837
结束页码: 841
语种: 英语
Scopus关键词: air temperature ; glacial-interglacial cycle ; glacier advance ; ice sheet ; iceberg ; insolation ; Last Interglacial ; marine isotope stage ; microfossil ; moisture transfer ; palynology ; reconstruction ; sea surface temperature ; sediment core ; temperature gradient ; Western Europe
英文摘要: A period of continental ice growth between about 80,000 and 70,000 years ago was controlled by a decrease in summer insolation, and was among the four largest ice expansions of the past 250,000 years. The moisture source for this ice sheet expansion, known as the Marine Isotope Stage (MIS) 5a/4 transition, has been proposed to be the warm subpolar and northern subtropical Atlantic Ocean. However, the mechanism by which glaciers kept growing through three suborbital cooling events within this period, which were associated with iceberg discharge in the North Atlantic and cooling over Greenland, is unclear. Here we reconstruct parallel records of sea surface and air temperatures from marine microfossil and pollen data, respectively, from two sediment cores collected within the northern subtropical gyre. The thermal gradient between the cold air and warmer sea increased throughout the MIS5a/4 transition, and was marked by three intervals of even more pronounced thermal gradients associated with the C20, C19 and C18' cold events. We argue that the warm ocean surface along the western European margin provided a source of moisture that was transported, through northward-tracking storms, to feed ice sheets in colder Greenland, northern Europe and the Arctic. © 2013 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/106693
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: Ecole Pratique des Hautes Etudes, UMR-CNRS 5805 EPOC, Université Bordeaux 1, Avenue des Facultés, 33405 Talence, France; Aix Marseille Université, CNRS, IRD, Collège de France, UM CEREGE, Technopole de l'Arbois, BP80, 13545 Aix-en-Provence Cedex 04, France; IPSL, Laboratoire des Sciences du Climat et de l'Environnement CEA CNRS UVSQ UMR 8212, Bât. 712 / Orme des merisiers, 91191 Gif-sur-Yvette cedex, France; Université Bordeaux 1, UMR-CNRS 5805 EPOC, Avenue des Facultés, 33405 Talence, France; CNRS UMR 5199 PACEA-PPP, Université Bordeaux 1, Avenue des Facultés, F-33405 Talence, France; Department of Archaeology, History, Cultural Studies and Religion, University of Bergen, 5020 Bergen, Norway

Recommended Citation:
Sánchez Goñi M.F.,Bard E.,Landais A.,et al. Air-sea temperature decoupling in western Europe during the last interglacial-glacial transition[J]. Nature Geoscience,2013-01-01,6(10)
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