Using simulations of the last millennium to understand climate variability seen in palaeo-observations: similar variation of Iceland–Scotland overflow strength and Atlantic Multidecadal Oscillation

Lohmann, K.; Mignot, J.; Langehaug, H. R.; Jungclaus, J. H.; Matei, D.; Otterå, O. H.; Gao, Y. Q.; Mjell, T. L.; Ninnemann, U. S.; Kleiven, H. F.

doi:https://doi.org/10.5194/cp-11-203-2015

Articles | Volume 11, issue 2

https://doi.org/10.5194/cp-11-203-2015

© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.

https://doi.org/10.5194/cp-11-203-2015

© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.

Articles | Volume 11, issue 2

Research article

|

10 Feb 2015

Research article |

| 10 Feb 2015

Using simulations of the last millennium to understand climate variability seen in palaeo-observations: similar variation of Iceland–Scotland overflow strength and Atlantic Multidecadal Oscillation

K. Lohmann, J. Mignot, H. R. Langehaug, J. H. Jungclaus, D. Matei, O. H. Otterå, Y. Q. Gao, T. L. Mjell, U. S. Ninnemann, and H. F. Kleiven

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Final revised paper (published on 10 Feb 2015)
Preprint (discussion started on 11 Aug 2014)

Interactive discussion

Status: closed

AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment

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RC C1466: 'Referee comment by F. Lehner', Flavio Lehner, 10 Sep 2014
- AC C2072: 'Reply to Referee Comment C1466', Katja Lohmann, 12 Dec 2014
RC C1476: 'review of manuscript', Anonymous Referee #2, 11 Sep 2014
- AC C2081: 'Reply to Referee Comment C1476', Katja Lohmann, 12 Dec 2014

Short summary

We use model simulations to investigate mechanisms of similar Iceland--Scotland overflow (outflow from the Nordic seas) and North Atlantic sea surface temperature variability, suggested from palaeo-reconstructions (Mjell et al., 2015). Our results indicate the influence of Nordic Seas surface temperature on the pressure gradient across the Iceland--Scotland ridge, not a large-scale link through the meridional overturning circulation, is responsible for the (simulated) co-variability.