Modelling the Arctic wave-affected marginal ice zone: a comparison with ICESat-2 observations
We evaluate marginal ice zone (MIZ) extent in a wave–ice 25 km-resolution coupled model, compared with pan-Arctic wave-affected sea-ice regions derived from ICESat-2 altimetry over the period December 2018–May 2020. By using a definition of the MIZ based on the monthly maximum of the wave height, we...
Published in: | Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences |
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Online Access: | http://dx.doi.org/10.1098/rsta.2021.0262 https://royalsocietypublishing.org/doi/pdf/10.1098/rsta.2021.0262 https://royalsocietypublishing.org/doi/full-xml/10.1098/rsta.2021.0262 |
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crroyalsociety:10.1098/rsta.2021.0262 2024-09-30T14:30:29+00:00 Modelling the Arctic wave-affected marginal ice zone: a comparison with ICESat-2 observations Boutin, G. Williams, T. Horvat, C. Brodeau, L. European Space Agency Schmidt Futures 2022 http://dx.doi.org/10.1098/rsta.2021.0262 https://royalsocietypublishing.org/doi/pdf/10.1098/rsta.2021.0262 https://royalsocietypublishing.org/doi/full-xml/10.1098/rsta.2021.0262 en eng The Royal Society https://royalsociety.org/journals/ethics-policies/data-sharing-mining/ Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences volume 380, issue 2235 ISSN 1364-503X 1471-2962 journal-article 2022 crroyalsociety https://doi.org/10.1098/rsta.2021.0262 2024-09-02T04:21:09Z We evaluate marginal ice zone (MIZ) extent in a wave–ice 25 km-resolution coupled model, compared with pan-Arctic wave-affected sea-ice regions derived from ICESat-2 altimetry over the period December 2018–May 2020. By using a definition of the MIZ based on the monthly maximum of the wave height, we suggest metrics to evaluate the model taking into account the sparse coverage of ICESat-2. The model produces MIZ extents comparable to observations, especially in winter. A sensitivity study highlights the need for strong wave attenuation in thick, compact ice but weaker attenuation as sea ice forms, as the model underestimates the MIZ extent in autumn. This underestimation may be due to limited wave growth in partially covered ice, overestimated sea-ice concentration or the absence of other processes affecting floe size. We discuss our results in the context of other definitions of the MIZ based on floe size and sea-ice concentration, as well as the potential impact of wave-induced fragmentation on ice dynamics, found to be minor at the climate scales investigated here. This article is part of the theme issue ‘Theory, modelling and observations of marginal ice zone dynamics: multidisciplinary perspectives and outlooks’. Article in Journal/Newspaper Arctic Sea ice The Royal Society Arctic Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 380 2235 |
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Open Polar |
collection |
The Royal Society |
op_collection_id |
crroyalsociety |
language |
English |
description |
We evaluate marginal ice zone (MIZ) extent in a wave–ice 25 km-resolution coupled model, compared with pan-Arctic wave-affected sea-ice regions derived from ICESat-2 altimetry over the period December 2018–May 2020. By using a definition of the MIZ based on the monthly maximum of the wave height, we suggest metrics to evaluate the model taking into account the sparse coverage of ICESat-2. The model produces MIZ extents comparable to observations, especially in winter. A sensitivity study highlights the need for strong wave attenuation in thick, compact ice but weaker attenuation as sea ice forms, as the model underestimates the MIZ extent in autumn. This underestimation may be due to limited wave growth in partially covered ice, overestimated sea-ice concentration or the absence of other processes affecting floe size. We discuss our results in the context of other definitions of the MIZ based on floe size and sea-ice concentration, as well as the potential impact of wave-induced fragmentation on ice dynamics, found to be minor at the climate scales investigated here. This article is part of the theme issue ‘Theory, modelling and observations of marginal ice zone dynamics: multidisciplinary perspectives and outlooks’. |
author2 |
European Space Agency Schmidt Futures |
format |
Article in Journal/Newspaper |
author |
Boutin, G. Williams, T. Horvat, C. Brodeau, L. |
spellingShingle |
Boutin, G. Williams, T. Horvat, C. Brodeau, L. Modelling the Arctic wave-affected marginal ice zone: a comparison with ICESat-2 observations |
author_facet |
Boutin, G. Williams, T. Horvat, C. Brodeau, L. |
author_sort |
Boutin, G. |
title |
Modelling the Arctic wave-affected marginal ice zone: a comparison with ICESat-2 observations |
title_short |
Modelling the Arctic wave-affected marginal ice zone: a comparison with ICESat-2 observations |
title_full |
Modelling the Arctic wave-affected marginal ice zone: a comparison with ICESat-2 observations |
title_fullStr |
Modelling the Arctic wave-affected marginal ice zone: a comparison with ICESat-2 observations |
title_full_unstemmed |
Modelling the Arctic wave-affected marginal ice zone: a comparison with ICESat-2 observations |
title_sort |
modelling the arctic wave-affected marginal ice zone: a comparison with icesat-2 observations |
publisher |
The Royal Society |
publishDate |
2022 |
url |
http://dx.doi.org/10.1098/rsta.2021.0262 https://royalsocietypublishing.org/doi/pdf/10.1098/rsta.2021.0262 https://royalsocietypublishing.org/doi/full-xml/10.1098/rsta.2021.0262 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Sea ice |
genre_facet |
Arctic Sea ice |
op_source |
Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences volume 380, issue 2235 ISSN 1364-503X 1471-2962 |
op_rights |
https://royalsociety.org/journals/ethics-policies/data-sharing-mining/ |
op_doi |
https://doi.org/10.1098/rsta.2021.0262 |
container_title |
Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences |
container_volume |
380 |
container_issue |
2235 |
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1811635403767152640 |