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

Richardson, Glen, Wadley, Martin R., Heywood, Karen J. ORCID: https://orcid.org/0000-0001-9859-0026, Stevens, David P. ORCID: https://orcid.org/0000-0002-7283-4405 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
Uncontrolled Keywords:	sdg 13 - climate action ,/dk/atira/pure/sustainabledevelopmentgoals/climate_action
Faculty \ School:	Faculty of Science > School of Mathematics (former - to 2024) University of East Anglia Research Groups/Centres > Theme - ClimateUEA
UEA Research Groups:	Faculty of Science > Research Groups > Centre for Ocean and Atmospheric Sciences Faculty of Science > Research Groups > Fluid and Solid Mechanics (former - to 2024) Faculty of Science > Research Groups > Fluids & Structures Faculty of Science > Research Groups > Numerical Simulation, Statistics & Data Science
Depositing User:	David Stevens
Date Deposited:	01 Dec 2010 14:12
Last Modified:	11 Nov 2024 00:36
URI:	https://ueaeprints.uea.ac.uk/id/eprint/15903
DOI:	10.1029/2004GL021586

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