Articles | Volume 12, issue 8
Clim. Past, 12, 1663–1679, 2016
https://doi.org/10.5194/cp-12-1663-2016
Clim. Past, 12, 1663–1679, 2016
https://doi.org/10.5194/cp-12-1663-2016

Research article 18 Aug 2016

Research article | 18 Aug 2016

Hosed vs. unhosed: interruptions of the Atlantic Meridional Overturning Circulation in a global coupled model, with and without freshwater forcing

Nicolas Brown and Eric D. Galbraith

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Cited articles

Alvarez-Solas, J., Charbit, S., Ritz, C., Paillard, D., Ramstein, G., and Dumas, C.: Links between ocean temperature and iceberg discharge during Heinrich events, Nat. Geosci., 3, 122–126, https://doi.org/10.1038/ngeo752, 2010.
Anderson, J. L.: The New GFDL Global Atmosphere and Land Model AM2–LM2: Evaluation with Prescribed SST Simulations, J. Climate, 17, 4641–4673, https://doi.org/10.1175/JCLI-3223.1, 2004.
Arzel, O., Colin de Verdière, A., and England, M. H.: The Role of Oceanic Heat Transport and Wind Stress Forcing in Abrupt Millennial-Scale Climate Transitions, J. Climate, 23, 2233–2256, https://doi.org/10.1175/2009JCLI3227.1, 2010.
Arzel, O., England, M. H., Verdière, A. C., and Huck, T.: Abrupt millennial variability and interdecadal-interstadial oscillations in a global coupled model: sensitivity to the background climate state, Clim. Dynam., 39, 259–275, https://doi.org/10.1007/s00382-011-1117-y, 2011.
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Short summary
An Earth system model is used to explore variability in the global impacts of AMOC disruptions. The model exhibits spontaneous AMOC oscillations under particular boundary conditions, which we compare with freshwater-forced disruptions. We find that the global impacts are similar whether the AMOC disruptions are spontaneous or forced. Freshwater forcing generally amplifies the global impacts, with tropical precipitation and the stability of polar haloclines showing particular sensitivity.