The influence of decision-making in tree ring-based climate reconstructions.

The influence of decision-making in tree ring-based climate reconstructions.
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DOI:
10.1038/s41467-021-23627-6
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发表时间:
2021-06-07
影响因子:
16.6
通讯作者:
Esper J
Esper J
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Büntgen U;Allen K;Anchukaitis KJ;Arseneault D;Boucher É;Bräuning A;Chatterjee S;Cherubini P;Churakova Sidorova OV;Corona C;Gennaretti F;Grießinger J;Guillet S;Guiot J;Gunnarson B;Helama S;Hochreuther P;Hughes MK;Huybers P;Kirdyanov AV;Krusic PJ;Ludescher J;Meier WJ;Myglan VS;Nicolussi K;Oppenheimer C;Reinig F;Salzer MW;Seftigen K;Stine AR;Stoffel M;St George S;Tejedor E;Trevino A;Trouet V;Wang J;Wilson R;Yang B;Xu G;Esper J

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树木年轮年表支持大多数共同时代气候的年度重建。然而,它们是使用不同的数据集和技术得出的,其后果迄今为止很少被探索。在这里,我们报告了一个双盲实验的结果,产生了15个北方半球夏季温度重建从一个共同的网络区域树轮宽度数据集。作为一个整体,共同时代重建平均值与1794-2016年CE的仪器温度相关性为0.79(p < 0.001),揭示了大型火山爆发后的夏季冷却,并显示出自20世纪80年代以来的强烈变暖。不同的均值,方差,振幅,灵敏度和持久性,合奏成员表现出主观性的影响,在重建过程中。因此,我们建议常规使用集合重建的方法,以提供一个更一致的图片过去的气候变率。树木年轮是共同时代气候重建的重要档案,但方法决策对结果的影响程度尚不清楚。在这里,作者展示了15个不同小组采取的不同方法如何影响来自相同数据的集合温度重建。
Tree-ring chronologies underpin the majority of annually-resolved reconstructions of Common Era climate. However, they are derived using different datasets and techniques, the ramifications of which have hitherto been little explored. Here, we report the results of a double-blind experiment that yielded 15 Northern Hemisphere summer temperature reconstructions from a common network of regional tree-ring width datasets. Taken together as an ensemble, the Common Era reconstruction mean correlates with instrumental temperatures from 1794–2016 CE at 0.79 (p < 0.001), reveals summer cooling in the years following large volcanic eruptions, and exhibits strong warming since the 1980s. Differing in their mean, variance, amplitude, sensitivity, and persistence, the ensemble members demonstrate the influence of subjectivity in the reconstruction process. We therefore recommend the routine use of ensemble reconstruction approaches to provide a more consensual picture of past climate variability. Tree rings are a crucial archive for Common Era climate reconstructions, but the degree to which methodological decisions influence outcomes is not well known. Here, the authors show how different approaches taken by 15 different groups influence the ensemble temperature reconstruction from the same data.
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DOI: 10.1038/s41467-018-06036-0
发表时间: 2018-09-06
影响因子: 16.6
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发表时间: 2010-01-28
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期刊: Scientific data
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通讯作者: PAGES2k Consortium