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Dansgaard-Oeschger events: tipping points in the climate system

Dansgaard-Oeschger events: tipping points in the climate system
Dansgaard-Oeschger events: tipping points in the climate system
The largest variability in temperature over the last sixty thousand years is connected with Dansgaard-Oeschger events.

Various prototype models have been proposed to explain these rapid climate fluctuations, but until now no observational constraint has been forwarded to choose between different theories.

We assess the bimodality of the system reconstructing the topology of the multi-dimensional attractor over which the climate system evolves. Furthermore, we show that Dansgaard-Oeschger events are compatible with the crossing of a tipping point in the climate system.

We use high-resolution ice core isotope data to investigate the statistical properties of the climate fluctuations in the period before the onset of the abrupt change. We find that the statistics are consistent with the switches between two different climate equilibrium states in response to a changing external forcing.
1814-9332
4269-4294
Cimatoribus, A.A.
b4c1dc3e-2531-481e-a4a5-80bdd4829bd4
Drijfhout, S.S.
a5c76079-179b-490c-93fe-fc0391aacf13
Livina, V.
a4cb0954-12cc-41b5-848e-c01b1578f987
van der Schrier, G.
75cad588-0db4-4ce1-b72a-4ea8db80ac63
Cimatoribus, A.A.
b4c1dc3e-2531-481e-a4a5-80bdd4829bd4
Drijfhout, S.S.
a5c76079-179b-490c-93fe-fc0391aacf13
Livina, V.
a4cb0954-12cc-41b5-848e-c01b1578f987
van der Schrier, G.
75cad588-0db4-4ce1-b72a-4ea8db80ac63

Cimatoribus, A.A., Drijfhout, S.S., Livina, V. and van der Schrier, G. (2012) Dansgaard-Oeschger events: tipping points in the climate system. Climate of the Past, 8 (5), 4269-4294. (doi:10.5194/cpd-8-4269-2012).

Record type: Article

Abstract

The largest variability in temperature over the last sixty thousand years is connected with Dansgaard-Oeschger events.

Various prototype models have been proposed to explain these rapid climate fluctuations, but until now no observational constraint has been forwarded to choose between different theories.

We assess the bimodality of the system reconstructing the topology of the multi-dimensional attractor over which the climate system evolves. Furthermore, we show that Dansgaard-Oeschger events are compatible with the crossing of a tipping point in the climate system.

We use high-resolution ice core isotope data to investigate the statistical properties of the climate fluctuations in the period before the onset of the abrupt change. We find that the statistics are consistent with the switches between two different climate equilibrium states in response to a changing external forcing.

Full text not available from this repository.

More information

Published date: 2012
Organisations: Ocean and Earth Science

Identifiers

Local EPrints ID: 348340
URI: https://eprints.soton.ac.uk/id/eprint/348340
ISSN: 1814-9332
PURE UUID: 5b8e3f81-4916-4b80-b523-11a54a241af9

Catalogue record

Date deposited: 12 Feb 2013 12:02
Last modified: 18 Jul 2017 04:52

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