A global multiproxy database for temperature reconstructions of the Common Era.
A global multiproxy database for temperature reconstructions of the Common Era.
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DOI：
10.1038/sdata.2017.88
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发表时间：
2017-07-11
期刊：
影响因子：
9.8
通讯作者：
PAGES2k Consortium
中科院分区：
文献类型：
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作者：
PAGES2k Consortium
可再现的公元前（公元1年至今）气候重建是将工业时代变暖置于自然气候变化背景下的关键。在这里，我们提出了一个来自PAGES 2k倡议的温度敏感代理记录的社区数据库。该数据库收集了来自648个地点的692条记录，包括所有大陆区域和主要海洋盆地。这些记录来自树木、冰、沉积物、珊瑚、洞穴沉积物、文件证据和其他档案。它们的长度从50年到2000年不等，中位数为547年，而时间分辨率从每两周一次到百年一次不等。在1850-2014年期间，近一半的代理时间序列与HadCRUT4.2表面温度显着相关。全球温度复合材料显示出高分辨率和低分辨率档案之间的一致性，在档案类型、陆地与海洋位置以及筛选标准之间具有大致相似的模式。该数据库适用于调查公元时期的全球和区域温度变化，并以链接古数据（LiPD）格式共享，包括Matlab，R和Python中的序列化。
Reproducible climate reconstructions of the Common Era (1 CE to present) are key to placing industrial-era warming into the context of natural climatic variability. Here we present a community-sourced database of temperature-sensitive proxy records from the PAGES2k initiative. The database gathers 692 records from 648 locations, including all continental regions and major ocean basins. The records are from trees, ice, sediment, corals, speleothems, documentary evidence, and other archives. They range in length from 50 to 2000 years, with a median of 547 years, while temporal resolution ranges from biweekly to centennial. Nearly half of the proxy time series are significantly correlated with HadCRUT4.2 surface temperature over the period 1850–2014. Global temperature composites show a remarkable degree of coherence between high- and low-resolution archives, with broadly similar patterns across archive types, terrestrial versus marine locations, and screening criteria. The database is suited to investigations of global and regional temperature variability over the Common Era, and is shared in the Linked Paleo Data (LiPD) format, including serializations in Matlab, R and Python.