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(Table S1) Radiocarbon dates of organic matter from Lena Delta ice wedges

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.

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Cite this as

Meyer, Hanno, Opel, Thomas, Laepple, Thomas, Dereviagin, Alexander Yu, Hoffmann, Kirstin, Werner, Martin (2015). Dataset: (Table S1) Radiocarbon dates of organic matter from Lena Delta ice wedges. https://doi.org/10.1594/PANGAEA.842166

DOI retrieved: 2015

Additional Info

Field Value
Imported on November 30, 2024
Last update November 30, 2024
License CC-BY-3.0
Source https://doi.org/10.1594/PANGAEA.842166
Author Meyer, Hanno
Given Name Hanno
Family Name Meyer
More Authors
Opel, Thomas
Laepple, Thomas
Dereviagin, Alexander Yu
Hoffmann, Kirstin
Werner, Martin
Source Creation 2015
Publication Year 2015
Resource Type text/tab-separated-values - filename: Meyer_2015
Subject Areas
Name: Lithosphere

Related Identifiers
Title: Long-term winter warming trend in the Siberian Arctic during the mid- to late Holocene
Identifier: https://doi.org/10.1038/ngeo2349
Type: DOI
Relation: IsSupplementTo
Year: 2015
Source: Nature Geoscience
Authors: Meyer Hanno , Opel Thomas , Laepple Thomas , Dereviagin Alexander Yu , Hoffmann Kirstin , Werner Martin .