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Comments on “Decadal Changes in the North Atlantic and Pacific Meridional Overturning Circulation and Heat Flux”

Peter M. SaundersNational Oceanographic Centre, University of Southampton, Southampton, United Kingdom

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Stuart A. CunninghamNational Oceanographic Centre, University of Southampton, Southampton, United Kingdom

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Beverly A. de CuevasNational Oceanographic Centre, University of Southampton, Southampton, United Kingdom

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Andrew C. CowardNational Oceanographic Centre, University of Southampton, Southampton, United Kingdom

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Abstract

It is demonstrated that current level models, both with and without assimilation, generate too shallow an overturning in the North Atlantic (just like their predecessors) because they do not reproduce the descent of plumes of cold water from the Greenland and Norwegian Seas. Consequently, the prediction of decadal change from one such model reported by C. Wunsch and P. Heimbach is queried.

Corresponding author address: Stuart A. Cunningham, National Oceanographic Centre, University of Southampton, Waterfront Campus, European Way, Southampton SO14 3ZH, United Kingdom. Email: scu@noc.soton.ac.uk

Abstract

It is demonstrated that current level models, both with and without assimilation, generate too shallow an overturning in the North Atlantic (just like their predecessors) because they do not reproduce the descent of plumes of cold water from the Greenland and Norwegian Seas. Consequently, the prediction of decadal change from one such model reported by C. Wunsch and P. Heimbach is queried.

Corresponding author address: Stuart A. Cunningham, National Oceanographic Centre, University of Southampton, Waterfront Campus, European Way, Southampton SO14 3ZH, United Kingdom. Email: scu@noc.soton.ac.uk

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