A statistics-based reconstruction of high-resolution global terrestrial climate for the last 800,000 years

This is a Preprint and has not been peer reviewed. This is version 4 of this Preprint.

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Authors

Mario Krapp , Robert Beyer , Stephen L. Edmundson, Paul J Valdes, Andrea Manica 

Abstract

Curated global climate data have been generated from climate model outputs for the last 120,000 years, whereas reconstructions going back even further have been lacking due to the high computational cost of climate simulations.
Here, we present a statistically-derived global terrestrial climate dataset for every 1,000 years of the last 800,000 years. It is based on a set of linear regressions between 72 existing HadCM3 climate simulations of the last 120,000 years and external forcings consisting of CO2, orbital parameters, and land type. The estimated climatologies were interpolated to 0.5° resolution and bias-corrected using present-day climate. The data compare well with the original HadCM3 simulations and with long-term proxy records. Our dataset includes monthly temperature, precipitation, cloud cover, and 17 bioclimatic variables. In addition, we derived annual net primary productivity and global biome distributions using the BIOME4 vegetation model. The data are a relevant source for different research areas, such as archaeology or ecology, to study the long-term effect of glacial-interglacial climate cycles for periods beyond the last 120,000 years.

DOI

https://doi.org/10.31223/osf.io/d5hfx

Subjects

Climate, Earth Sciences, Oceanography and Atmospheric Sciences and Meteorology, Physical Sciences and Mathematics, Statistical Models, Statistics and Probability

Keywords

paleoecology, Pleistocene, paleoclimate, Emulator

Dates

Published: 2019-01-19 04:02

Last Updated: 2021-03-09 23:27

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License

GNU Lesser General Public License (LGPL) 2.1

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