Millennial-scale climate variability over land overprinted by ocean temperature fluctuations

A new paper has been published by Hébert R et al. in Nature Geoscience on "Millennial-scale climate variability over land overprinted by ocean temperature fluctuations".

The authors argue that while variations in regional temperature have extensive societal implications, "our understanding of the amplitude and origin of long-term natural variability is insufficient for accurate regional projections". 

In their paper, they reveal a "fundamental relationship between the timescales" that in turn "provides a unique insight into the emergence of a marine-driven low-frequency regime governing terrestrial climate variability and sets the basis to project the amplitude of temperature fluctuations on multi-decadal timescales and longer".

Acknowledgements

This is a contribution to the SPACE ERC and GLACIAL LEGACY ERC projects. This work is also a contribution to the PALMOD project. 

The work profited from discussions at the CVAS working group of the Past Global Changes (PAGES) programme. 

We thank A. Dallmeyer, A. Dolman, T. Keel, I. Kröner, T. Kunz, S. Lovejoy and K. Rehfeld for useful discussions. We acknowledge P. Huybers for comments on an early version of the manuscript. We thank P. Braconnot, J. Cretat, O. Marti and J. Jungclaus for, respectively, providing the IPSL and ECHAM5 simulations, and T. Böhmer, X. Cao, C. Li and A. Postl for their support compiling and using the pollen database. We thank all original data contributors who made their proxy data available and acknowledge the Neotoma Palaeoecology Database.

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