期刊
QUATERNARY SCIENCE REVIEWS
卷 129, 期 -, 页码 1-36出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.quascirev.2015.09.018
关键词
Last Interglacial; Penultimate deglaciation; Last glacial inception; Chronology; Corals; Speleothems; Ice cores; Marine sediments; Peat and lake sediments; Climate dynamics
资金
- European Union [243908]
- Deutsche Forschungsgemeinschaft (DFG) under the special Priority Program INTERDYNAMIC (EngLIG project) [GO 2122/1-1]
- DFG Research Center/Cluster of Excellence The Ocean in the Earth System
- British Antarctic Survey Polar Science for Planet Earth Programme
- CSIC-JAE-Pre028 contract
- CSIC-Ramon y Cajal [RYC-2013-14073]
- Danish Council for Independent Research, Natural Science [12-126709/FNU]
- Belgian Federal Science Policy Office (BELSPO) [MO/36/028]
- NERC [NE/I009639/1, bas0100034, NE/G00756X/1] Funding Source: UKRI
- Natural Environment Research Council [NE/I009639/1, bas0100034, NE/G00756X/1] Funding Source: researchfish
- ICREA Funding Source: Custom
The Last Interglacial (LIG) represents an invaluable case study to investigate the response of components of the Earth system to global warming. However, the scarcity of absolute age constraints in most archives leads to extensive use of various stratigraphic alignments to different reference chronologies. This feature sets limitations to the accuracy of the stratigraphic assignment of the climatic sequence of events across the globe during the LIG. Here, we review the strengths and limitations of the methods that are commonly used to date or develop chronologies in various climatic archives for the time span (similar to 140 -100 ka) encompassing the penultimate deglaciation, the LIG and the glacial inception. Climatic hypotheses underlying record alignment strategies and the interpretation of tracers are explicitly described. Quantitative estimates of the associated absolute and relative age uncertainties are provided. Recommendations are subsequently formulated on how best to define absolute and relative chronologies. Future climato-stratigraphic alignments should provide (1) a clear statement of climate hypotheses involved, (2) a detailed understanding of environmental parameters controlling selected tracers and (3) a careful evaluation of the synchronicity of aligned paleoclimatic records. We underscore the need to (1) systematically report quantitative estimates of relative and absolute age uncertainties, (2) assess the coherence of chronologies when comparing different records, and (3) integrate these uncertainties in paleoclimatic interpretations and comparisons with climate simulations. Finally, we provide a sequence of major climatic events with associated age uncertainties for the period 140-105 ka, which should serve as a new benchmark to disentangle mechanisms of the Earth system's response to orbital forcing and evaluate transient climate simulations. (C) 2015 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).
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