气候变化领域集成服务门户(CCPortal): Setting the tree-ring record straight

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DOI	10.1007/s00382-020-05433-w
	Setting the tree-ring record straight
	Ludescher J.; Bunde A.; Büntgen U.; Schellnhuber H.J.
发表日期	2020
ISSN	0930-7575
起始页码	3017
结束页码	3024
卷号	55
英文摘要	Tree-ring chronologies are the main source for annually resolved and absolutely dated temperature reconstructions of the last millennia and thus for studying the intriguing problem of climate impacts. Here we focus on central Europe and compare the tree-ring based temperature reconstruction with reconstructions from harvest dates, long meteorological measurements, and historical model data. We find that all data are long-term persistent, but in the tree-ring based reconstruction the strength of the persistence quantified by the Hurst exponent is remarkably larger (h≅ 1.02) than in the other data (h= 0.52–0.69), indicating an unrealistic exaggeration of the historical temperature variations.We show how to correct the tree-ring based reconstruction by a mathematical transformation that adjusts the persistence and leads to reduced amplitudes of the warm and cold periods. The new transformed record agrees well with both the observational data and the harvest dates-based reconstructions and allows more realistic studies of climate impacts. It confirms that the present warming is unprecedented. © 2020, The Author(s).
英文关键词	Harvest dates; Hurst exponent; Long-term persistence; Temperature reconstructions; Tree-ring
语种	英语
scopus关键词	chronology; paleoclimate; paleotemperature; Quaternary; reconstruction; temperature anomaly; temperature effect; tree ring; warming
来源期刊	Climate Dynamics
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/145255
作者单位	Potsdam Institute for Climate Impact Research, Potsdam, 14473, Germany; Institute for Theoretical Physics, Justus Liebig University Giessen, Giessen, 35392, Germany; Department of Geography, University of Cambridge, Cambridge, CB2 3EN, United Kingdom; Swiss Federal Institute for Forest, Snow and Landscape Research, Birmensdorf, 8903, Switzerland; Global Change Research Centre (CzechGlobe), Brno, 603 00, Czech Republic; Department of Geography, Faculty of Science, Masaryk University, Brno, 603 00, Czech Republic; Tsinghua University, Beijing, 100084, China
推荐引用方式 GB/T 7714	Ludescher J.,Bunde A.,Büntgen U.,et al. Setting the tree-ring record straight[J],2020,55.
APA	Ludescher J.,Bunde A.,Büntgen U.,&Schellnhuber H.J..(2020).Setting the tree-ring record straight.Climate Dynamics,55.
MLA	Ludescher J.,et al."Setting the tree-ring record straight".Climate Dynamics 55(2020).