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A spatial reconstruction of Siberian Last Glacial Maximum climate from pollen data

A spatial reconstruction of Siberian Last Glacial Maximum climate from pollen data

This is a Preprint and has not been peer reviewed. This is version 2 of this Preprint.

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Authors

Nils Weitzel, Andreas Hense, Ulrike Herzschuh, Thomas Böhmer, Xianyong Cao, Kira Rehfeld

Abstract

The Last Glacial Maximum (LGM, around 21.000 years before present) was a period with significantly colder global mean temperature, large Northern Hemisphere ice sheets, and lower CO2 concentrations. Siberia was affected by a lower sea level which led to a closed Bering strait and a northward shift of the Arctic Ocean coastline. However, unlike other high-latitude areas, Siberia was not covered by a terrestrial ice sheet at that time. Climate simulations with LGM boundary conditions show large inter-model differences especially in Northern Siberia, which impede a direct analysis of Siberian LGM climate from simulations. Preserved pollen sample...  more

DOI

https://doi.org/10.31223/osf.io/76dfe

Subjects

Climate, Oceanography and Atmospheric Sciences and Meteorology, Physical Sciences and Mathematics

Keywords

paleoclimatology, Precipitation, Bayesian statistics, Climate field reconstructions, Model- data comparison, Summer temperature

Dates

Published: 2020-03-19 02:00

Last Updated: 2022-03-25 19:24

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License

CC BY Attribution 4.0 International