Articles | Volume 14, issue 8
https://doi.org/10.5194/cp-14-1165-2018
https://doi.org/10.5194/cp-14-1165-2018
Research article
 | 
14 Aug 2018
Research article |  | 14 Aug 2018

Abrupt cold events in the North Atlantic Ocean in a transient Holocene simulation

Andrea Klus, Matthias Prange, Vidya Varma, Louis Bruno Tremblay, and Michael Schulz

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Short summary
Numerous proxy records from the northern North Atlantic suggest substantial climate variability including the occurrence of multi-decadal-to-centennial cold events during the Holocene. We analyzed two abrupt cold events in a Holocene simulation using a comprehensive climate model. It is shown that the events were ultimately triggered by prolonged phases of positive North Atlantic Oscillation causing changes in ocean circulation followed by severe cooling, freshening, and expansion of sea ice.