Prytherch, J orcid.org/0000-0003-1209-289X, Brooks, IM orcid.org/0000-0002-5051-1322, Crill, PM et al. (6 more authors) (2017) Direct determination of the air-sea CO₂ gas transfer velocity in Arctic sea-ice regions. Geophysical Research Letters, 44 (8). pp. 3770-3778. ISSN 0094-8276
Abstract
The Arctic Ocean is an important sink for atmospheric CO₂. The impact of decreasing sea-ice extent and expanding marginal ice zones on Arctic air-sea CO₂ exchange depends on the rate of gas transfer in the presence of sea ice. Sea ice acts to limit air-sea gas exchange by reducing contact between air and water, but is also hypothesised to enhance gas transfer rates across surrounding open water surfaces through physical processes such as increased surface-ocean turbulence from ice-water shear and ice-edge form drag. Here we present the first direct determination of the CO₂ air-sea gas transfer velocity in a wide range of Arctic sea-ice conditions. We show that the gas transfer velocity increases near-linearly with decreasing sea-ice concentration. We also show that previous modeling approaches overestimate gas transfer rates in sea-ice regions.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2017, The Authors. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. |
Keywords: | gas transfer velocity; eddy covariance; sea ice; air-sea CO2 flux |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Environment (Leeds) > School of Earth and Environment (Leeds) > Inst for Climate & Atmos Science (ICAS) (Leeds) |
Funding Information: | Funder Grant number NERC NE/J020893/1 NERC NE/K011820/1 |
Depositing User: | Symplectic Publications |
Date Deposited: | 05 Apr 2017 09:27 |
Last Modified: | 23 Jun 2023 22:26 |
Status: | Published |
Publisher: | American Geophysical Union (AGU) |
Identification Number: | 10.1002/2017GL073593 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:114538 |