EGU2020-4669
https://doi.org/10.5194/egusphere-egu2020-4669
EGU General Assembly 2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Bridging the gap between the terrestrial and marine paleoclimate reconstructions in the North Atlantic realm

Tine Nilsen1,2 and Jürg Luterbacher1,3,4
Tine Nilsen and Jürg Luterbacher
  • 1Department of Geography, Justus-Liebig University of Giessen, Giessen, Germany
  • 2Department of Mathematics and Statistics, UiT the Arctic University of Norway, Tromsø, Norway
  • 3Center of International Development and Environmental Research, Justus Liebig University of Giessen, Giessen, Germany
  • 4World Meteorological Organization (WMO), Department for Science and Innovation, Geneva, Switzerland

Climate field reconstruction (CFR) techniques have become common tools for studying terrestrial climate variability across various time and space scales1,2. Here, we present the framework of ensemble-based CFR of sea surface temperature in the North Atlantic Ocean, using a Bayesian hierarchical model5 and the proxy surrogate reconstruction method6. Methodological development is necessary in order to take properly into account the age-depth uncertainties that is specific to proxies originating from marine sediment cores, and the generally low temporal resolution of the data. The new reconstructions will provide evidence on linkages and mechanisms between the marine realm and European climate including extremes covering the past 2000 years. The spatiotemporal covariance-structures of the input and output data are of special relevance, and the benchmarking datasets can be used for various impact studies and for paleomodel/data comparison and process understanding coupling the North Atlantic with Eurasia.

 

References:

1Luterbacher, J. & Zorita, E. in “The Palgrave Handbook of Climate History”, (2018), Palgrave Macmillan, Springer Nature Limited,London, 131-140, ISBN 978-1-137-43020-5 (eBook), doi: 10.1057/978-1-137-43020-5

2Neukom, R. et al. (2019), Nature, 571, 550–554, doi:10.1038/s41586-019-1401-2

3 Tingley, M. P. and P. Huybers (2010a), J. Clim., 23, 2759–2781, doi: 10.1175/2009JCLI3015.1

4 Graham, N.E. et al. (2007), Clim. Change, 83, 241-285, doi: 10.1007/s10584-007-9239-2

How to cite: Nilsen, T. and Luterbacher, J.: Bridging the gap between the terrestrial and marine paleoclimate reconstructions in the North Atlantic realm, EGU General Assembly 2020, Online, 4–8 May 2020, EGU2020-4669, https://doi.org/10.5194/egusphere-egu2020-4669, 2020

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