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Polar Amplification Due to Enhanced Heat Flux Across the Halocline by Beer, E.; Eisenman, I.; Wagner, T. J. W. is a Earth and Planetary Sciences article available to read on EtoBox.

What is Polar Amplification Due to Enhanced Heat Flux Across the Halocline about?

## Abstract Polar amplification is a widely discussed phenomenon, and a range of mechanisms have been proposed to contribute to it, many of which involve atmospheric and surface processes. However, substantial questions remain regarding the role of ocean heat transport. Previous studies have found that ocean heat transport into the Arctic increases under global warming, but the reasons behind this remain unresolved. Here, we investigate changes in oceanic heat fluxes and associated impacts on polar amplification using an idealized ocean‐sea ice‐climate model of the Northern Hemisphere. We show that beneath the sea ice, vertical temperature gradients across the halocline increase as the ocean warms, since the surface mixed layer temperatures in ice‐covered regions are fixed near the freezing point. These enhanced vertical temperature gradients drive enhanced horizontal heat transport into the polar region and can contribute substantially to polar amplification.

Who reads Polar Amplification Due to Enhanced Heat Flux Across the Halocline?

Author

Beer, E.; Eisenman, I.; Wagner, T. J. W.

Publisher

American Geophysical Union; Wiley-Blackwell; American Geophysical Union (AGU); Wiley; Research Square; University of New Hampshire Libraries (ISSN 1944-8007)

Published

2020

Language

EN

Field

Earth and Planetary Sciences (Physical Sciences)