Cooling Down the World Oceans and the Earth

Hunt, J. ORCID: https://orcid.org/0000-0002-1840-7277, Nascimento, A., Diuana, F.A., de Assis Brasil Weber, N., Castro, G.M., Chaves, A.C., Mesquita, A.L.A., Colling, A.V., & Schneider, P.S. (2025). Cooling Down the World Oceans and the Earth. In: Geoengineering and Climate Change. pp. 265-285 Wiley. ISBN 9781394204380 10.1002/9781394204847.ch16.

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Abstract

The world is going through intensive changes due to global warming. It is well known that the reduction in ice cover in the Arctic Ocean further contributes to increasing the atmospheric Arctic temperature due to the reduction of the albedo effect and increase in heat absorbed by the ocean's surface. The Arctic ice cover also works like an insulation sheet, keeping the heat in the ocean from dissipating into the cold Arctic atmosphere. Increasing the salinity of the Arctic Ocean surface would allow the warmer and less salty North Atlantic Ocean current to flow on the surface of the Arctic Ocean, considerably increasing the temperature of the Arctic atmosphere and releasing the ocean heat trapped under the ice. This chapter argues that if the North Atlantic Ocean current could keep the Arctic Ocean ice-free during the winter, the longwave radiation heat loss into space would be larger than the increase in heat absorption due to the albedo effect. It presents details of the fundamentals of the Arctic Ocean circulation and presents three possible approaches for increasing the salinity of the surface water of the Arctic Ocean. It then discusses how increasing the salinity of the Arctic Ocean would warm the atmosphere of the Arctic region, but cool down the oceans and possibly the Earth. However, it might take thousands of years for the effects of cooling the oceans to cool the global average atmospheric temperature.

Item Type: Book Section
Research Programs: Energy, Climate, and Environment (ECE)
Energy, Climate, and Environment (ECE) > Sustainable Service Systems (S3)
Depositing User: Luke Kirwan
Date Deposited: 28 Jan 2025 16:05
Last Modified: 28 Jan 2025 16:05
URI: https://pure.iiasa.ac.at/20370

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