Short-term climate response to a freshwater pulse in the Southern Ocean

Richardson, Glen, Wadley, Martin R., Heywood, Karen J., Stevens, David P. and Banks, Helene T. (2005) Short-term climate response to a freshwater pulse in the Southern Ocean. Geophysical Research Letters, 32 (3). L03702. ISSN 0094-8276

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Abstract

The short-term response of the climate system to a freshwater anomaly in the Southern Ocean is investigated using a coupled global climate model. As a result of the anomaly, ventilation of deep waters around Antarctica is inhibited, causing a warming of the deep ocean, and a cooling of the surface. The surface cooling causes Antarctic sea-ice to thicken and increase in extent, and this leads to a cooling of Southern Hemisphere surface air temperature. The surface cooling increases over the first 5 years, then remains constant over the next 5 years. There is a more rapid response in the Pacific Ocean, which transmits a signal to the Northern Hemisphere, ultimately causing a shift to the negative phase of the North Atlantic Oscillation in years 5–10.

Item Type: Article
Faculty \ School: Faculty of Science > School of Mathematics
Faculty of Science > School of Environmental Sciences
Depositing User: David Stevens
Date Deposited: 01 Dec 2010 14:12
Last Modified: 24 Jun 2020 23:44
URI: https://ueaeprints.uea.ac.uk/id/eprint/15903
DOI: 10.1029/2004GL021586

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