An extended Arctic proxy temperature database for the past 2,000 years.

An extended Arctic proxy temperature database for the past 2,000 years.
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DOI:
10.1038/sdata.2014.26
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发表时间:
2014
期刊:
影响因子:
9.8
通讯作者:
Kaufman, Darrell S.
Kaufman, Darrell S.
中科院分区:
综合性期刊2区
文献类型:
--
作者:
McKay, Nicholas P.;Kaufman, Darrell S.

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最近几个世纪和几千年的强有力的气候重建对于将现代变暖置于自然变率的背景下是非常宝贵的。在这里,我们提出了一个扩展和修订的数据库(版本1.1)的代理温度记录最近用于重建北极温度在过去的2,000年。这些数据集以机器可读的格式呈现,并已扩展了地质年代学数据和一致生成的时间不确定性集合,这将有助于今后分析地质年代学不确定性的影响。每个记录的温度响应的季节性的标准化描述,由原作者报告,还包括激励一个更细致入微的方法来整合记录与变量季节敏感性。尽管占主导地位的季节性,而不是每年,温度响应的数据库中,与仪器记录的温度比较表明,作为一个整体,数据集最好的记录整个北极地区的年度温度变化,特别是在加拿大东北部和格陵兰岛,那里的记录密度最高。
Robust climate reconstructions of the most recent centuries and millennia are invaluable for placing modern warming in the context of natural variability. Here we present an extended and revised database (version 1.1) of proxy temperature records recently used to reconstruct Arctic temperatures for the past 2,000 years. The datasets are presented in a machine-readable format, and have been extended with the geochronologic data and consistently generated time-uncertain ensembles, which will be useful in future analyses of the influence of geochronologic uncertainty. A standardized description of the seasonality of the temperature response for each record, as reported by the original authors, is also included to motivate a more nuanced approach to integrating records with variable seasonal sensitivities. Despite the predominance of seasonal, rather than annual, temperature responders in the database, comparisons with the instrumental record of temperature suggest that, as a whole, the datasets best record annual temperature variability across the Arctic, especially in northeast Canada and Greenland, where the density of records is highest.
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