A global database of Holocene paleotemperature records Scientific Data

A comprehensive database of paleoclimate records is needed to place recent warming into the longer-term context of natural climate variability. We present a global compilation of quality-controlled, published, temperature-sensitive proxy records extending back 12,000 years through the Holocene. Data were compiled from 679 sites where time series cover at least 4000 years, are resolved at sub-millennial scale (median spacing of 400 years or finer) and have at least one age control point every 3000 years, with cut-off values slackened in data-sparse regions. The data derive from lake sediment (51%), marine sediment (31%), peat (11%), glacier ice (3%), and other natural archives. The database contains 1319 records, including 157 from the Southern Hemisphere. The multi-proxy database comprises paleotemperature time series based on ecological assemblages, as well as biophysical and geochemical indicators that reflect mean annual or seasonal temperatures, as encoded in the database. This database can be used to reconstruct the spatiotemporal evolution of Holocene temperature at global to regional scales, and is publicly available in Linked Paleo Data (LiPD) format. Grant no. NA17OAR4320101

为将近期气候变暖置于自然气候变率的长期背景之中，亟需一套完整的古气候记录数据库。本研究构建了一套全球整合的、经过质量管控的已发表温度敏感代用记录数据集，其时间跨度可覆盖全新世12000年历史。本次整合的数据来自679个采样点，各时间序列时长至少为4000年，时间分辨率达亚千年尺度（中位数采样间隔不超过400年），且每3000年至少包含一个年代控制点；在数据匮乏区域，上述截断阈值可适当放宽。数据载体涵盖湖泊沉积物（51%）、海洋沉积物（31%）、泥炭（11%）、冰川冰（3%）及其他自然档案。本数据库共计收录1319条记录，其中南半球来源的记录共157条。该多代用指标数据库包含基于生态组合重建的古温度时间序列，以及反映年平均或季节温度的生物物理与地球化学指标，相关信息均已在数据库中完成编码。本数据库可用于重建全球至区域尺度下全新世温度的时空演化特征，且以链接古数据（Linked Paleo Data, LiPD）格式公开共享。资助编号：NA17OAR4320101