The Cryosphere
The Cryosphere
TC
Articles | Volume 17, issue 2
Articles | Volume 17, issue 2
https://doi.org/10.5194/tc-17-457-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/tc-17-457-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 17, issue 2
Research article
 | 
03 Feb 2023
Research article |  | 03 Feb 2023

Evolution of the dynamics, area, and ice production of the Amundsen Sea Polynya, Antarctica, 2016–2021

Grant J. Macdonald, Stephen F. Ackley, Alberto M. Mestas-Nuñez, and Adrià Blanco-Cabanillas

Supplement

https://doi.org/10.5194/tc-17-457-2023-supplement

Data sets

MEaSUREs BedMachine Antarctica, Version 2 M. Morlighem https://doi.org/10.5067/E1QL9HFQ7A8M

ERA5 hourly data on single levels from 1959 to present H. Hersbach, B. Bell, P. Berrisford, G. Biavati, A. Horányi, J. Muñoz Sabater, J. Nicolas, C. Peubey, R. Radu, I. Rozum, D. Schepers, A. Simmons, C. Soci, D. Dee, and J.-N. Thépaut https://doi.org/10.24381/cds.adbb2d47

Model code and software

Evolution of the Amundsen Sea Polynya code G. J. Macdonald https://doi.org/10.5281/zenodo.7563262

Video supplement

Video S1 Grant J. Macdonald https://doi.org/10.5281/zenodo.5179444

Video S2 Grant J. Macdonald https://doi.org/10.5281/zenodo.5179509

Video S3 Grant J. Macdonald https://doi.org/10.5281/zenodo.5179590

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Short summary
Polynyas are key sites of sea ice production, biological activity, and carbon sequestration. The Amundsen Sea Polynya is of particular interest due to its size and location. By analyzing radar imagery and climate and sea ice data products, we evaluate variations in the dynamics, area, and ice production of the Amundsen Sea Polynya. In particular, we find the local seafloor topography and associated grounded icebergs play an important role in the polynya dynamics, influencing ice production.
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