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Climate of the Past An interactive open-access journal of the European Geosciences Union
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CP | Articles | Volume 15, issue 2
Clim. Past, 15, 661–684, 2019
https://doi.org/10.5194/cp-15-661-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
Clim. Past, 15, 661–684, 2019
https://doi.org/10.5194/cp-15-661-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

Research article 05 Apr 2019

Research article | 05 Apr 2019

Assessing the robustness of Antarctic temperature reconstructions over the past 2 millennia using pseudoproxy and data assimilation experiments

François Klein et al.

Data sets

Data assimilation-based surface temperature reconstructions over the last two millennia over Antarctica F. Klein, N. J. Abram, M. A. J. Curran, H. Goosse, S. Goursaud, V. Masson-Delmotte, A. Moy, R. Neukom, A. Orsi, J. Sjolte, N. Steiger, B. Stenni, and M. Werner https://doi.org/10.5281/zenodo.2579204

Historical climate model output of ECHAM5-wiso from 1871-2011 at T106 resolution N. J. Steiger https://doi.org/10.5281/zenodo.1249604

Publications Copernicus
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Short summary
Antarctic temperature changes over the past millennia have been reconstructed from isotope records in ice cores in several studies. However, the link between both variables is complex. Here, we investigate the extent to which this affects the robustness of temperature reconstructions using pseudoproxy and data assimilation experiments. We show that the reconstruction skill is limited, especially at the regional scale, due to a weak and nonstationary covariance between δ18O and temperature.
Antarctic temperature changes over the past millennia have been reconstructed from isotope...
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