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DOI | 10.1029/2019GL085728 |
Lipid Biomarkers Quantify Holocene Summer Temperature and Ice Cap Sensitivity in Icelandic Lakes | |
Harning, David J.1; 39;Andrea, William J.2 | |
2020-02-16 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2020 |
卷号 | 47期号:3 |
文章类型 | Article |
语种 | 英语 |
国家 | Iceland; USA |
英文摘要 | Although recent research has made significant advances in characterizing Iceland's Holocene environmental history, the region still lacks reliable and continuous records of corresponding paleotemperature. Here we merge bacterial and algal lipid biomarkers (branched glycerol dialkyl glycerol tetraethers and long-chain alkenones, respectively) to quantify Holocene temperature change from a small lake in northwest Iceland. Our local proxy record shows that early Holocene and late Holocene temperatures ranged from 3.2 to -1.1 degrees C relative today, which are in close agreement with independent estimates from regional ice cap models. At 2.4 ka, we observe abrupt cooling across bacteria-, algae-, and glacier-derived proxy records, which may have been initiated by extratropical volcanism and/or ocean/atmospheric climate variability of the North Atlantic region. Using early Holocene warmth and ice cap demise as an analog for modern climate change, Intergovernmental Panel on Climate Change temperature projections suggest that the local ice cap, Drangajokull, could vanish by similar to 2050 CE. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000529107400060 |
WOS关键词 | DIALKYL GLYCEROL TETRAETHERS ; LONG-CHAIN ALKENONES ; NORTH-ATLANTIC ; MULTI-PROXY ; ENVIRONMENTAL CONTROLS ; CLIMATE VARIATIONS ; GLACIER ACTIVITY ; CATCHMENT SOILS ; HIGH-RESOLUTION ; VESTFIROIR |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/279609 |
专题 | 气候变化 |
作者单位 | 1.Univ Iceland, Fac Earth Sci, Reykjavik, Iceland; 2.Univ Colorado, Inst Arctic & Alpine Res, Boulder, CO 80309 USA; 3.Univ Colorado, Dept Geol Sci, Boulder, CO 80309 USA; 4.Univ Colorado, Organ Geochem Lab, Boulder, CO 80309 USA; 5.Columbia Univ, Lamont Doherty Earth Observ, New York, NY USA |
推荐引用方式 GB/T 7714 | Harning, David J.,39;Andrea, William J.. Lipid Biomarkers Quantify Holocene Summer Temperature and Ice Cap Sensitivity in Icelandic Lakes[J]. GEOPHYSICAL RESEARCH LETTERS,2020,47(3). |
APA | Harning, David J.,&39;Andrea, William J..(2020).Lipid Biomarkers Quantify Holocene Summer Temperature and Ice Cap Sensitivity in Icelandic Lakes.GEOPHYSICAL RESEARCH LETTERS,47(3). |
MLA | Harning, David J.,et al."Lipid Biomarkers Quantify Holocene Summer Temperature and Ice Cap Sensitivity in Icelandic Lakes".GEOPHYSICAL RESEARCH LETTERS 47.3(2020). |
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