PaleoClim, high spatial resolution paleoclimate surfaces for global land areas.

PaleoClim, high spatial resolution paleoclimate surfaces for global land areas.
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DOI:
10.1038/sdata.2018.254
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发表时间:
2018-11-13
期刊:
影响因子:
9.8
通讯作者:
Haywood AM
Haywood AM
中科院分区:
综合性期刊2区
文献类型:
--
作者:
Brown JL;Hill DJ;Dolan AM;Carnaval AC;Haywood AM

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高分辨率、易获取的古气候数据对环境、进化和生态研究至关重要。从气候模拟得到的生物气候层的可用性代表了晚更新世和全新世的条件,使物种对晚第四纪气候变化的反应的研究发生了革命性的变化。然而,对早更新世和上新世气候变化影响的综合研究--已知最近的物种形成事件集中在这两个时期--由于可下载的、方便用户使用的气候描述符有限,一直受到阻碍。在这里,我们介绍了PaleoClim,这是一个免费的2.5分钟分辨率(赤道约5 公里)的缩小的古气候输出数据库,其中包括使用HadCM3(英国气象局哈德利中心大气环流模型的一个版本)进行的快照式气候模型模拟的地表温度和降水估计。到目前为止,该数据库包含了330万到78.7万年前三个关键时间段的气候数据:更新世的海洋同位素第19阶段(约787年 ka)、中上新世暖期(约3.264-3.025 Ma)和上新世晚期的MISM2(约3.3 Ma)。
High-resolution, easily accessible paleoclimate data are essential for environmental, evolutionary, and ecological studies. The availability of bioclimatic layers derived from climatic simulations representing conditions of the Late Pleistocene and Holocene has revolutionized the study of species responses to Late Quaternary climate change. Yet, integrative studies of the impacts of climate change in the Early Pleistocene and Pliocene – periods in which recent speciation events are known to concentrate – have been hindered by the limited availability of downloadable, user-friendly climatic descriptors. Here we present PaleoClim, a free database of downscaled paleoclimate outputs at 2.5-minute resolution (~5 km at equator) that includes surface temperature and precipitation estimates from snapshot-style climate model simulations using HadCM3, a version of the UK Met Office Hadley Centre General Circulation Model. As of now, the database contains climatic data for three key time periods spanning from 3.3 to 0.787 million years ago: the Marine Isotope Stage 19 (MIS19) in the Pleistocene (~787 ka), the mid-Pliocene Warm Period (~3.264–3.025 Ma), and MIS M2 in the Late Pliocene (~3.3 Ma).
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