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The long-term cooling trend in East Antarctic plateau over the Past 2000 years is only robust between 550 and 1550 CE

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An, C, Hou, S, Jiang, S, Li, Y, Ma, T, Curran, MAJ, Pang, H, Zhang, Z, Zhang, W, Yu, J, Liu, K, Shi, G, Ma, H and Sun, B 2021 , 'The long-term cooling trend in East Antarctic plateau over the Past 2000 years is only robust between 550 and 1550 CE' , Geophysical Research Letters, vol. 48, no. 7 , pp. 1-11 , doi: 10.1029/2021GL092923.

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Abstract

The uncertainties in Antarctic climate reconstructions due to scarcity of proxy records have restricted the understanding of mechanisms of climate change, and further hindered the improvement of climate models. Here, we provide a new climate record derived from water stable isotopes in a Dome A, East Antarctica ice core. Together with six other ice core records, the Dome A record is used to investigate temperature changes in East Antarctic Plateau (EAP) during period 1 - 1900 CE. Our results show that, a previously reported long-term cooling trend in EAP during the recent (pre-1900 CE) 1900 years is only robust between 550 and 1550 CE. A combination of solar and volcanic forcing may have induced the EAP centennial-scale cold events, and further caused the long-term cooling trend from 550 to 1550 CE with a small contribution from orbital forcing.

Item Type: Article
Authors/Creators:An, C and Hou, S and Jiang, S and Li, Y and Ma, T and Curran, MAJ and Pang, H and Zhang, Z and Zhang, W and Yu, J and Liu, K and Shi, G and Ma, H and Sun, B
Keywords: East Antarctic Plateau, climate change, climate models
Journal or Publication Title: Geophysical Research Letters
Publisher: Amer Geophysical Union
ISSN: 0094-8276
DOI / ID Number: 10.1029/2021GL092923
Copyright Information:

©2021. The Authors. This is an open access article under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) License, (https://creativecommons.org/licenses/by-nc-nd/4.0/), which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made.

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