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Articles | Volume 21, issue 1
Articles | Volume 21, issue 1
https://doi.org/10.5194/os-21-359-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/os-21-359-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 21, issue 1
Research article
 | Highlight paper
 | 
07 Feb 2025
Research article | Highlight paper |  | 07 Feb 2025

Turbulent heat flux dynamics along the Dotson and Getz ice-shelf fronts (Amundsen Sea, Antarctica)

Blandine Jacob, Bastien Y. Queste, and Marcel D. du Plessis

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Arrigo, K. R. and van Dijken, G. L.: Phytoplankton dynamics within 37 Antarctic coastal polynya systems, J. Geophys. Res.-Oceans, 108, 3271, https://doi.org/10.1029/2002JC001739, 2003. a
Arrigo, K. R., Lowry, K. E., and van Dijken, G. L.: Annual changes in sea ice and phytoplankton in polynyas of the Amundsen Sea, Antarctica, Deep-Sea Res. Pt II, 71, 5–15, 2012. a, b
Bigg, G. R., Jickells, T. D., Liss, P. S., and Osborn, T. J.: The role of the oceans in climate, Int. J. Climatol., 23, 1127–1159, 2003. a
Biri, S., Cornes, R. C., Berry, D. I., Kent, E. C., and Yelland, M. J.: AirSeaFluxCode: Open-source software for calculating turbulent air-sea fluxes from meteorological parameters, Frontiers in Marine Science, 9, 1049168, https://doi.org/10.3389/fmars.2022.1049168, 2023 (code available at: https://github.com/NOCSurfaceProcesses/AirSeaFluxCode/, last access: 31 January 2025). a, b, c
Bourassa, M. A., Gille, S. T., Bitz, C., Carlson, D., Cerovecki, I., Clayson, C. A., Cronin, M. F., Drennan, W. M., Fairall, C. W., Hoffman, R. N., Magnusdottir, G., Pinker, R. T., Renfrew, I. A., Serreze, M., Speer, K., Talley, L. D., and Wick, G. A.: High-latitude ocean and sea ice surface fluxes: Challenges for climate research, B. Am. Meteorol. Soc., 94, 403–423, 2013. a
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This is the first in-situ validation of the reanalysis atmospheric flux and observations. Given the importance of the region in the context of global sea-level rise and recent advancements of numerical models at ice-ocean-atmosphere interface, the problems identified and the new parameterization in this paper make a difference.
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Few observations exist in the Amundsen Sea. Consequently, studies rely on reanalysis (e.g., ERA5) to investigate how the atmosphere affects ocean variability (e.g., sea-ice formation and melt). We use data collected along ice shelves to show that cold, dry air blowing from Antarctica triggers large ocean heat loss, which is underestimated by ERA5. We then use an ocean model to show that this bias has an important impact on the ocean, with implications for sea-ice forecasts.
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