globalchange  > 气候减缓与适应
DOI: 10.1038/ngeo2349
论文题名:
Long-term winter warming trend in the Siberian Arctic during the mid- to late Holocene
作者: Meyer H.; Opel T.; Laepple T.; Dereviagin A.Y.; Hoffmann K.; Werner M.
刊名: Nature Geoscience
ISSN: 17520894
出版年: 2015
卷: 8, 期:2
起始页码: 122
结束页码: 125
语种: 英语
Scopus关键词: climate modeling ; estimation method ; Holocene ; orbital forcing ; proxy climate record ; warming ; winter ; Arctic Ocean ; Lena Delta ; Russian Federation ; Sakha ; Siberia
英文摘要: Relative to the past 2,000 years, the Arctic region has warmed significantly over the past few decades. However, the evolution of Arctic temperatures during the rest of the Holocene is less clear. Proxy reconstructions, suggest a long-term cooling trend throughout the mid- to late Holocene, whereas climate model simulations show only minor changes or even warming. Here we present a record of the oxygen isotope composition of permafrost ice wedges from the Lena River Delta in the Siberian Arctic. The isotope values, which reflect winter season temperatures, became progressively more enriched over the past 7,000 years, reaching unprecedented levels in the past five decades. This warming trend during the mid- to late Holocene is in opposition to the cooling seen in other proxy records. However, most of these existing proxy records are biased towards summer temperatures. We argue that the opposing trends are related to the seasonally different orbital forcing over this interval. Furthermore, our reconstructed trend as well as the recent maximum are consistent with the greenhouse gas forcing and climate model simulations, thus reconciling differing estimates of Arctic and northern high-latitude temperature evolution during the Holocene. © 2015 Macmillan Publishers Limited. All rights reserved
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/106359
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: Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Periglacial Research Section, Telegrafenberg A43, Potsdam, Germany; Moscow State University, Department of Geocryology, Vorob'evy Gory, Moscow, Russian Federation; Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Paleoclimate Dynamics Section, Bussestraße 24, Bremerhaven, Germany; Centre for Ice and Climate, Niels Bohr Institute, University of Copenhagen, Juliane Maries Vej 30, Copenhagen, Denmark

Recommended Citation:
Meyer H.,Opel T.,Laepple T.,et al. Long-term winter warming trend in the Siberian Arctic during the mid- to late Holocene[J]. Nature Geoscience,2015-01-01,8(2)
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