Thermodynamic and dynamic contributions to seasonal Arctic sea ice thickness distributions from airborne observations
Sea ice thickness is a key parameter in the polar climate and ecosystem. Thermodynamic and dynamic processes alter the sea ice thickness. The Multidisciplinary drifting Observatory for the Study of Arctic Climate (MOSAiC) expedition provided a unique opportunity to study seasonal sea ice thickness c...
Published in: | Elementa: Science of the Anthropocene |
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Online Access: | http://dx.doi.org/10.1525/elementa.2021.00074 https://online.ucpress.edu/elementa/article-pdf/doi/10.1525/elementa.2021.00074/517134/elementa.2021.00074.pdf |
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crunicaliforniap:10.1525/elementa.2021.00074 2024-06-23T07:50:02+00:00 Thermodynamic and dynamic contributions to seasonal Arctic sea ice thickness distributions from airborne observations von Albedyll, Luisa Hendricks, Stefan Grodofzig, Raphael Krumpen, Thomas Arndt, Stefanie Belter, H. Jakob Birnbaum, Gerit Cheng, Bin Hoppmann, Mario Hutchings, Jennifer Itkin, Polona Lei, Ruibo Nicolaus, Marcel Ricker, Robert Rohde, Jan Suhrhoff, Mira Timofeeva, Anna Watkins, Daniel Webster, Melinda Haas, Christian 2022 http://dx.doi.org/10.1525/elementa.2021.00074 https://online.ucpress.edu/elementa/article-pdf/doi/10.1525/elementa.2021.00074/517134/elementa.2021.00074.pdf en eng University of California Press http://creativecommons.org/licenses/by/4.0/ Elementa: Science of the Anthropocene volume 10, issue 1 ISSN 2325-1026 journal-article 2022 crunicaliforniap https://doi.org/10.1525/elementa.2021.00074 2024-05-24T13:22:48Z Sea ice thickness is a key parameter in the polar climate and ecosystem. Thermodynamic and dynamic processes alter the sea ice thickness. The Multidisciplinary drifting Observatory for the Study of Arctic Climate (MOSAiC) expedition provided a unique opportunity to study seasonal sea ice thickness changes of the same sea ice. We analyzed 11 large-scale (∼50 km) airborne electromagnetic sea thickness and surface roughness surveys from October 2019 to September 2020. Data from ice mass balance and position buoys provided additional information. We found that thermodynamic growth and decay dominated the seasonal cycle with a total mean sea ice thickness increase of 1.4 m (October 2019 to June 2020) and decay of 1.2 m (June 2020 to September 2020). Ice dynamics and deformation-related processes, such as thin ice formation in leads and subsequent ridging, broadened the ice thickness distribution and contributed 30% to the increase in mean thickness. These processes caused a 1-month delay between maximum thermodynamic sea ice thickness and maximum mean ice thickness. The airborne EM measurements bridged the scales from local floe-scale measurements to Arctic-wide satellite observations and model grid cells. The spatial differences in mean sea ice thickness between the Central Observatory (<10 km) of MOSAiC and the Distributed Network (<50 km) were negligible in fall and only 0.2 m in late winter, but the relative abundance of thin and thick ice varied. One unexpected outcome was the large dynamic thickening in a regime where divergence prevailed on average in the western Nansen Basin in spring. We suggest that the large dynamic thickening was due to the mobile, unconsolidated sea ice pack and periodic, sub-daily motion. We demonstrate that this Lagrangian sea ice thickness data set is well suited for validating the existing redistribution theory in sea ice models. Our comprehensive description of seasonal changes of the sea ice thickness distribution is valuable for interpreting MOSAiC time series across ... Article in Journal/Newspaper Arctic ice pack Nansen Basin Sea ice University of California Press Arctic Elementa: Science of the Anthropocene 10 1 |
institution |
Open Polar |
collection |
University of California Press |
op_collection_id |
crunicaliforniap |
language |
English |
description |
Sea ice thickness is a key parameter in the polar climate and ecosystem. Thermodynamic and dynamic processes alter the sea ice thickness. The Multidisciplinary drifting Observatory for the Study of Arctic Climate (MOSAiC) expedition provided a unique opportunity to study seasonal sea ice thickness changes of the same sea ice. We analyzed 11 large-scale (∼50 km) airborne electromagnetic sea thickness and surface roughness surveys from October 2019 to September 2020. Data from ice mass balance and position buoys provided additional information. We found that thermodynamic growth and decay dominated the seasonal cycle with a total mean sea ice thickness increase of 1.4 m (October 2019 to June 2020) and decay of 1.2 m (June 2020 to September 2020). Ice dynamics and deformation-related processes, such as thin ice formation in leads and subsequent ridging, broadened the ice thickness distribution and contributed 30% to the increase in mean thickness. These processes caused a 1-month delay between maximum thermodynamic sea ice thickness and maximum mean ice thickness. The airborne EM measurements bridged the scales from local floe-scale measurements to Arctic-wide satellite observations and model grid cells. The spatial differences in mean sea ice thickness between the Central Observatory (<10 km) of MOSAiC and the Distributed Network (<50 km) were negligible in fall and only 0.2 m in late winter, but the relative abundance of thin and thick ice varied. One unexpected outcome was the large dynamic thickening in a regime where divergence prevailed on average in the western Nansen Basin in spring. We suggest that the large dynamic thickening was due to the mobile, unconsolidated sea ice pack and periodic, sub-daily motion. We demonstrate that this Lagrangian sea ice thickness data set is well suited for validating the existing redistribution theory in sea ice models. Our comprehensive description of seasonal changes of the sea ice thickness distribution is valuable for interpreting MOSAiC time series across ... |
format |
Article in Journal/Newspaper |
author |
von Albedyll, Luisa Hendricks, Stefan Grodofzig, Raphael Krumpen, Thomas Arndt, Stefanie Belter, H. Jakob Birnbaum, Gerit Cheng, Bin Hoppmann, Mario Hutchings, Jennifer Itkin, Polona Lei, Ruibo Nicolaus, Marcel Ricker, Robert Rohde, Jan Suhrhoff, Mira Timofeeva, Anna Watkins, Daniel Webster, Melinda Haas, Christian |
spellingShingle |
von Albedyll, Luisa Hendricks, Stefan Grodofzig, Raphael Krumpen, Thomas Arndt, Stefanie Belter, H. Jakob Birnbaum, Gerit Cheng, Bin Hoppmann, Mario Hutchings, Jennifer Itkin, Polona Lei, Ruibo Nicolaus, Marcel Ricker, Robert Rohde, Jan Suhrhoff, Mira Timofeeva, Anna Watkins, Daniel Webster, Melinda Haas, Christian Thermodynamic and dynamic contributions to seasonal Arctic sea ice thickness distributions from airborne observations |
author_facet |
von Albedyll, Luisa Hendricks, Stefan Grodofzig, Raphael Krumpen, Thomas Arndt, Stefanie Belter, H. Jakob Birnbaum, Gerit Cheng, Bin Hoppmann, Mario Hutchings, Jennifer Itkin, Polona Lei, Ruibo Nicolaus, Marcel Ricker, Robert Rohde, Jan Suhrhoff, Mira Timofeeva, Anna Watkins, Daniel Webster, Melinda Haas, Christian |
author_sort |
von Albedyll, Luisa |
title |
Thermodynamic and dynamic contributions to seasonal Arctic sea ice thickness distributions from airborne observations |
title_short |
Thermodynamic and dynamic contributions to seasonal Arctic sea ice thickness distributions from airborne observations |
title_full |
Thermodynamic and dynamic contributions to seasonal Arctic sea ice thickness distributions from airborne observations |
title_fullStr |
Thermodynamic and dynamic contributions to seasonal Arctic sea ice thickness distributions from airborne observations |
title_full_unstemmed |
Thermodynamic and dynamic contributions to seasonal Arctic sea ice thickness distributions from airborne observations |
title_sort |
thermodynamic and dynamic contributions to seasonal arctic sea ice thickness distributions from airborne observations |
publisher |
University of California Press |
publishDate |
2022 |
url |
http://dx.doi.org/10.1525/elementa.2021.00074 https://online.ucpress.edu/elementa/article-pdf/doi/10.1525/elementa.2021.00074/517134/elementa.2021.00074.pdf |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic ice pack Nansen Basin Sea ice |
genre_facet |
Arctic ice pack Nansen Basin Sea ice |
op_source |
Elementa: Science of the Anthropocene volume 10, issue 1 ISSN 2325-1026 |
op_rights |
http://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1525/elementa.2021.00074 |
container_title |
Elementa: Science of the Anthropocene |
container_volume |
10 |
container_issue |
1 |
_version_ |
1802640775856521216 |