globalchange  > 气候减缓与适应
DOI: 10.1038/ngeo1712
论文题名:
Links between tropical rainfall and North Atlantic climate during the last glacial period
作者: Deplazes G.; Lückge A.; Peterson L.C.; Timmermann A.; Hamann Y.; Hughen K.A.; Röhl U.; Laj C.; Cane M.A.; Sigman D.M.; Haug G.H.
刊名: Nature Geoscience
ISSN: 17520894
出版年: 2013
卷: 6, 期:3
起始页码: 213
结束页码: 217
语种: 英语
Scopus关键词: cooling ; Dansgaard-Oeschger cycle ; Heinrich event ; iceberg ; interstitial environment ; intertropical convergence zone ; Last Glacial ; Northern Hemisphere ; paleoclimate ; rainfall ; resolution ; temperature effect ; tropical environment ; Arabian Sea ; Arctic ; Atlantic Ocean ; Atlantic Ocean (North) ; Cariaco Basin ; Caribbean Sea ; Greenland ; Indian Ocean
英文摘要: During the last glacial period, the North Atlantic regionexperienced pronounced, millennial-scale alternations between cold, stadial conditions and milder interstadial conditions - commonly referred to as Dansgaard-Oeschger oscillations - as well as periods of massive iceberg discharge known as Heinrich events1. Changes in Northern Hemisphere temperature, as recorded in Greenland2-4, are thought to have affected the location of the Atlantic intertropical convergence zone5,6 and the strength of the Indian summer monsoon7,8. Here we use high-resolution records of sediment colour - a measure of terrigenous versus biogenic content - from the Cariaco Basin off the coast of Venezuela and the Arabian Sea to assess teleconnections with the North Atlantic climate system during the last glacial period. The Cariaco record indicates that the intertropical convergence zone migrated seasonally over the site during mild stadial conditions, but was permanently displaced south of the basin during peak stadials and Heinrich events. In the Arabian Sea, we find evidence of a weak Indian summer monsoon during the stadial events. The tropical records show a more variable response to North Atlantic cooling than the Greenland temperature records. We therefore suggest that Greenland climate is especially sensitive to variations in the North Atlantic system - in particular sea-ice extent - whereas the intertropical convergence zone and Indian monsoon system respond primarily to variations in mean Northern Hemisphere temperature. Copyright © 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/106833
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: Geological Institute, Department of Earth Sciences, ETH Zürich, 8092 Zürich, Switzerland; Bundesanstalt für Geowissenschaften und Rohstoffe, 30655 Hannover, Germany; Rosenstiel School of Marine and Atmospheric Science, University of Miami, Miami, FL 33149, United States; IPRC, SOEST, University of Hawaii, Honolulu, HI 96822, United States; Department of Marine Chemistry and Geochemistry, Woods Hole Oceanographic Institution, Woods Hole, MA 02543, United States; MARUM - Center for Marine Environmental Sciences, University of Bremen, 28359 Bremen, Germany; Laboratoire de Sciences du Climat et de l'Environment/IPSL, CEA/CNRS/UVSQ, 91198 Gif-sur-Yvette cedex, France; Lamont-Doherty Earth Observatory of Columbia University, Palisades, NY 10964, United States; Department of Geosciences, Guyot Hall, Princeton University, Princeton, NJ 08544, United States; DFG Leibnitz Center for Earth Surface Process and Climate Studies, Institute for Geosciences, Potsdam University, Potsdam D-14476, Germany

Recommended Citation:
Deplazes G.,Lückge A.,Peterson L.C.,et al. Links between tropical rainfall and North Atlantic climate during the last glacial period[J]. Nature Geoscience,2013-01-01,6(3)
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