气候变化领域集成服务门户(CCPortal): An overview on isotopic divergences - Causes for instability of tree-ring isotopes and climate correlations

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DOI	10.5194/cp-16-1223-2020
	An overview on isotopic divergences - Causes for instability of tree-ring isotopes and climate correlations
	Savard M.M.; Daux V.
发表日期	2020
ISSN	18149324
起始页码	1223
结束页码	1243
卷号	16 期号:4
英文摘要	Climatic reconstructions based on tree-ring isotopic series convey substantial information about past conditions prevailing in forested regions of the globe. However, in some cases, the relations between isotopic and climatic records appear unstable over time, generating the "isotopic divergences". Former reviews have thoroughly discussed the divergence concept for tree-ring physical properties but not for isotopes. Here we want to take stock of the isotopic divergence problem, express concerns and stimulate collaborative work for improving paleoclimatic reconstructions. There are five main causes for divergent parts in isotopic and climatic series: (1) artefacts due to sampling and data treatment, relevant for dealing with long series using sub-fossil stems; (2) stand dynamics, including juvenile effects mostly occurring in the early part of tree-ring series; (3) rise in atmospheric pCO2, which can directly influence the foliar behaviour; (4) change in climate, which may modify the isotope-climate causal links; and finally (5) atmospheric pollution, which may alter leaf and root functions. Future paleoclimate research would benefit from interdisciplinary efforts designed to develop further process-based models integrating multi-proxy inputs so as to help identify causes of isotopic divergences and circumvent some of them in inverse applications. © Royal Society Open Science. All rights reserved.
语种	英语
scopus关键词	atmospheric pollution; divergence; fossil record; isotopic analysis; juvenile; paleoclimate; tree ring
来源期刊	Climate of the Past
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/146696
作者单位	Geological Survey of Canada, Natural Resources Canada, Quebec, G1K 9A9, Canada; Laboratoire des Sciences du Climat et de l'Environnement (LSCE/UVSQ/CNRS/CEA/IPSL), Gif-sur-Yvette, 94800, France
推荐引用方式 GB/T 7714	Savard M.M.,Daux V.. An overview on isotopic divergences - Causes for instability of tree-ring isotopes and climate correlations[J],2020,16(4).
APA	Savard M.M.,&Daux V..(2020).An overview on isotopic divergences - Causes for instability of tree-ring isotopes and climate correlations.Climate of the Past,16(4).
MLA	Savard M.M.,et al."An overview on isotopic divergences - Causes for instability of tree-ring isotopes and climate correlations".Climate of the Past 16.4(2020).