Warm winter, thin ice?
Winter 2016/2017 saw record warmth over the Arctic Ocean, leading to the least amount of freezing degree days north of 70° N since at least 1979. The impact of this warmth was evaluated using model simulations from the Los Alamos sea ice model (CICE) and CryoSat-2 thickness estimates from three diff...
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ftcopernicus:oai:publications.copernicus.org:tc65757 2023-05-15T14:56:15+02:00 Warm winter, thin ice? Stroeve, Julienne C. Schroder, David Tsamados, Michel Feltham, Daniel 2018-09-27 application/pdf https://doi.org/10.5194/tc-12-1791-2018 https://tc.copernicus.org/articles/12/1791/2018/ eng eng doi:10.5194/tc-12-1791-2018 https://tc.copernicus.org/articles/12/1791/2018/ eISSN: 1994-0424 Text 2018 ftcopernicus https://doi.org/10.5194/tc-12-1791-2018 2020-07-20T16:23:16Z Winter 2016/2017 saw record warmth over the Arctic Ocean, leading to the least amount of freezing degree days north of 70° N since at least 1979. The impact of this warmth was evaluated using model simulations from the Los Alamos sea ice model (CICE) and CryoSat-2 thickness estimates from three different data providers. While CICE simulations show a broad region of anomalously thin ice in April 2017 relative to the 2011–2017 mean, analysis of three CryoSat-2 products show more limited regions with thin ice and do not always agree with each other, both in magnitude and direction of thickness anomalies. CICE is further used to diagnose feedback processes driving the observed anomalies, showing 11–13 cm reduced thermodynamic ice growth over the Arctic domain used in this study compared to the 2011–2017 mean, and dynamical contributions of +1 to +4 cm. Finally, CICE model simulations from 1985 to 2017 indicate the negative feedback relationship between ice growth and winter air temperatures may be starting to weaken, showing decreased winter ice growth since 2012, as winter air temperatures have increased and the freeze-up has been further delayed. Text Arctic Arctic Ocean Sea ice Copernicus Publications: E-Journals Arctic Arctic Ocean The Cryosphere 12 5 1791 1809 |
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Open Polar |
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Copernicus Publications: E-Journals |
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ftcopernicus |
language |
English |
description |
Winter 2016/2017 saw record warmth over the Arctic Ocean, leading to the least amount of freezing degree days north of 70° N since at least 1979. The impact of this warmth was evaluated using model simulations from the Los Alamos sea ice model (CICE) and CryoSat-2 thickness estimates from three different data providers. While CICE simulations show a broad region of anomalously thin ice in April 2017 relative to the 2011–2017 mean, analysis of three CryoSat-2 products show more limited regions with thin ice and do not always agree with each other, both in magnitude and direction of thickness anomalies. CICE is further used to diagnose feedback processes driving the observed anomalies, showing 11–13 cm reduced thermodynamic ice growth over the Arctic domain used in this study compared to the 2011–2017 mean, and dynamical contributions of +1 to +4 cm. Finally, CICE model simulations from 1985 to 2017 indicate the negative feedback relationship between ice growth and winter air temperatures may be starting to weaken, showing decreased winter ice growth since 2012, as winter air temperatures have increased and the freeze-up has been further delayed. |
format |
Text |
author |
Stroeve, Julienne C. Schroder, David Tsamados, Michel Feltham, Daniel |
spellingShingle |
Stroeve, Julienne C. Schroder, David Tsamados, Michel Feltham, Daniel Warm winter, thin ice? |
author_facet |
Stroeve, Julienne C. Schroder, David Tsamados, Michel Feltham, Daniel |
author_sort |
Stroeve, Julienne C. |
title |
Warm winter, thin ice? |
title_short |
Warm winter, thin ice? |
title_full |
Warm winter, thin ice? |
title_fullStr |
Warm winter, thin ice? |
title_full_unstemmed |
Warm winter, thin ice? |
title_sort |
warm winter, thin ice? |
publishDate |
2018 |
url |
https://doi.org/10.5194/tc-12-1791-2018 https://tc.copernicus.org/articles/12/1791/2018/ |
geographic |
Arctic Arctic Ocean |
geographic_facet |
Arctic Arctic Ocean |
genre |
Arctic Arctic Ocean Sea ice |
genre_facet |
Arctic Arctic Ocean Sea ice |
op_source |
eISSN: 1994-0424 |
op_relation |
doi:10.5194/tc-12-1791-2018 https://tc.copernicus.org/articles/12/1791/2018/ |
op_doi |
https://doi.org/10.5194/tc-12-1791-2018 |
container_title |
The Cryosphere |
container_volume |
12 |
container_issue |
5 |
container_start_page |
1791 |
op_container_end_page |
1809 |
_version_ |
1766328280847220736 |