New Mongolian-Siberian pollen and brGDGT surface dataset: local calibration for paleoclimate reconstructions

Paleoclimate reconstructions appear to be unavoidable steps in the future climate change understanding and especially the local calibration of the paleoclimate proxies. The Mongolian Plateau in particular, is a scarcely studied area. Here we present a latitudinal transect from the southern Siberian Baikal area to the Mongolian part of the Gobi desert: the New Mongolian-Siberian DataBase (NMSDB). The 49 surface samples presented in this dataset are from different types: moss polsters, surface soil samples and lacustrine top-cores. Two paleoclimate proxies have been carried here: pollen analysis and biomarkers (glycerol dialkyl glycerol tetraethers, GDGTs). The actual bioclimate parameters of each sample sites are derived from the ASTER data (NASA, 2014) for the elevation (m a.s.l.) and the WorldClim2.0 interpolated climate database (Fick et Hijmans, 2017) for the climate parameters. Fick, Stephen E., et Robert J. […]

古气候重建似乎是理解未来气候变化及尤其是对古气候代理的本地校准不可或缺的步骤。尤其是蒙古高原，这一区域研究甚少。在本研究中，我们呈现了一条从西伯利亚南部贝加尔湖地区至戈壁沙漠蒙古部分的纬度横断面：新蒙古-西伯利亚数据库（NMSDB）。该数据集展示了49个地表样本，包括苔藓层、地表土壤样本和湖泊表层岩心。本数据库引入了两种古气候代理：花粉分析和生物标志物（甘油二烷基甘油四醚，GDGTs）。每个样本点的实际生物气候参数，根据美国宇航局（NASA，2014年）的ASTER数据获取的海拔高度（海拔米）以及Fick和Hijmans（2017年）的世界Clim2.0插值气候数据库获取的气候参数计算得出。