Articles | Volume 14, issue 5
Clim. Past, 14, 609–617, 2018
https://doi.org/10.5194/cp-14-609-2018
Clim. Past, 14, 609–617, 2018
https://doi.org/10.5194/cp-14-609-2018

Research article 16 May 2018

Research article | 16 May 2018

Random and externally controlled occurrences of Dansgaard–Oeschger events

Johannes Lohmann and Peter D. Ditlevsen

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Short summary
The climate of the last glacial period was frequently interrupted by rapid warming events, the cause of which is still unknown. One open question is whether the occurrence of events is random or externally controlled. We studied the temporal characteristics of warm and cold phases using statistical null models and find that they are well described as random processes modulated by two different external climate factors. This may help distinguish physical mechanisms for rapid climate change.