Session: Cross-cutting Group 2 (Paleovar, Past to future, Data assimilation)
Author: Chris Brierley / firstname.lastname@example.org / University College London
Co-author: David Thornalley, University College London;
The Atlantic meridional overturning circulation has large amplitude variations on decadal timescales. Although models show this variability, a quantitative evaluation of it is hard because of a lack of observational records. Recent developments in paleoceanography now allow us to estimate the temporal behaviour of the AMOC over the last millennium. Here we will present three recent reconstructions (Rahmstorf et al, 2015; Thornalley et al, submitted). Here these are compared with the output of the PMIP3 past1000 simulations and the CESM last millennium ensemble. We explore the relevant approaches to perform such a data-model comparison. From a logistical viewpoint, this analysis will highlight the importance of both extending the past1000 simulations through the historical period and uploading the msftmyz diagnostic to the Earth System Grid.