School of Earth Sciences and Environmental Sustainability, Northern Arizona University , Flagstaff, Arizona 86011, USA.
Sci Data. 2014 Aug 19;1:140026. doi: 10.1038/sdata.2014.26. eCollection 2014.
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.
稳健的最近几个世纪和千年的气候重建对于将现代变暖置于自然变异性的背景下是非常宝贵的。 在这里，我们呈现了一个扩展和修订的代理温度记录数据库（版本 1.1），这些记录最近被用于重建过去 2000 年的北极温度。 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，这将在未来分析地质年代学不确定性的影响时非常有用。 还包括了原始作者报告的每个记录的温度响应季节性的标准化描述，以激发一种更细致入微的方法来整合具有可变季节性敏感性的记录。 尽管数据库中季节性而不是年度温度响应者占主导地位，但与温度的仪器记录进行比较表明，作为一个整体，数据集最能记录整个北极地区的年度温度变化，尤其是在记录密度最高的加拿大东北部和格陵兰岛。
