A year-round satellite sea-ice thickness record from CryoSat-2
Arctic sea ice is diminishing with climate warming at a rate unmatched for at least 1,000 years. As the receding ice pack raises commercial interest in the Arctic, it has become more variable and mobile, which increases safety risks to maritime users. Satellite observations of sea-ice thickness are...
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ftunivtroemsoe:oai:munin.uit.no:10037/26936 2023-05-15T14:34:19+02:00 A year-round satellite sea-ice thickness record from CryoSat-2 Landy, Jack Christopher Dawson, Geoffrey Tsamados, Michel Bushuk, Mitchell Stroeve, Julienne C. Howell, Stephen Krumpen, Thomas Babb, David G. Komarov, Alexander S. Heorton, Harold Belter, H. Jakob Aksenov, Yevgeny 2022-09-14 https://hdl.handle.net/10037/26936 https://doi.org/10.1038/s41586-022-05058-5 eng eng Springer Nature Nature Norges forskningsråd: 328957 Norges forskningsråd: 237906 https://www.nature.com/articles/s41586-022-05058-5 Landy JC, Dawson G, Tsamados M, Bushuk M, Stroeve JC, Howell S, Krumpen T, Babb DG, Komarov AS, Heorton H, Belter HJ, Aksenov Y. A year-round satellite sea-ice thickness record from CryoSat-2. Nature. 2022;609:517-522 FRIDAID 2056559 doi:10.1038/s41586-022-05058-5 0028-0836 1476-4687 https://hdl.handle.net/10037/26936 openAccess Copyright 2022 The Author(s) Journal article Tidsskriftartikkel Peer reviewed acceptedVersion 2022 ftunivtroemsoe https://doi.org/10.1038/s41586-022-05058-5 2022-10-05T23:00:52Z Arctic sea ice is diminishing with climate warming at a rate unmatched for at least 1,000 years. As the receding ice pack raises commercial interest in the Arctic, it has become more variable and mobile, which increases safety risks to maritime users. Satellite observations of sea-ice thickness are currently unavailable during the crucial melt period from May to September, when they would be most valuable for applications such as seasonal forecasting, owing to major challenges in the processing of altimetry data. Here we use deep learning and numerical simulations of the CryoSat-2 radar altimeter response to overcome these challenges and generate a pan-Arctic sea-ice thickness dataset for the Arctic melt period. CryoSat-2 observations capture the spatial and the temporal patterns of ice melting rates recorded by independent sensors and match the time series of sea-ice volume modelled by the Pan-Arctic Ice Ocean Modelling and Assimilation System reanalysis. Between 2011 and 2020, Arctic sea-ice thickness was 1.87 ± 0.10 m at the start of the melting season in May and 0.82 ± 0.11 m by the end of the melting season in August. Our year-round sea-ice thickness record unlocks opportunities for understanding Arctic climate feedbacks on different timescales. For instance, sea-ice volume observations from the early summer may extend the lead time of skilful August–October sea-ice forecasts by several months, at the peak of the Arctic shipping season. Article in Journal/Newspaper Arctic ice pack Sea ice University of Tromsø: Munin Open Research Archive Arctic Nature 609 7927 517 522 |
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Open Polar |
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University of Tromsø: Munin Open Research Archive |
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ftunivtroemsoe |
language |
English |
description |
Arctic sea ice is diminishing with climate warming at a rate unmatched for at least 1,000 years. As the receding ice pack raises commercial interest in the Arctic, it has become more variable and mobile, which increases safety risks to maritime users. Satellite observations of sea-ice thickness are currently unavailable during the crucial melt period from May to September, when they would be most valuable for applications such as seasonal forecasting, owing to major challenges in the processing of altimetry data. Here we use deep learning and numerical simulations of the CryoSat-2 radar altimeter response to overcome these challenges and generate a pan-Arctic sea-ice thickness dataset for the Arctic melt period. CryoSat-2 observations capture the spatial and the temporal patterns of ice melting rates recorded by independent sensors and match the time series of sea-ice volume modelled by the Pan-Arctic Ice Ocean Modelling and Assimilation System reanalysis. Between 2011 and 2020, Arctic sea-ice thickness was 1.87 ± 0.10 m at the start of the melting season in May and 0.82 ± 0.11 m by the end of the melting season in August. Our year-round sea-ice thickness record unlocks opportunities for understanding Arctic climate feedbacks on different timescales. For instance, sea-ice volume observations from the early summer may extend the lead time of skilful August–October sea-ice forecasts by several months, at the peak of the Arctic shipping season. |
format |
Article in Journal/Newspaper |
author |
Landy, Jack Christopher Dawson, Geoffrey Tsamados, Michel Bushuk, Mitchell Stroeve, Julienne C. Howell, Stephen Krumpen, Thomas Babb, David G. Komarov, Alexander S. Heorton, Harold Belter, H. Jakob Aksenov, Yevgeny |
spellingShingle |
Landy, Jack Christopher Dawson, Geoffrey Tsamados, Michel Bushuk, Mitchell Stroeve, Julienne C. Howell, Stephen Krumpen, Thomas Babb, David G. Komarov, Alexander S. Heorton, Harold Belter, H. Jakob Aksenov, Yevgeny A year-round satellite sea-ice thickness record from CryoSat-2 |
author_facet |
Landy, Jack Christopher Dawson, Geoffrey Tsamados, Michel Bushuk, Mitchell Stroeve, Julienne C. Howell, Stephen Krumpen, Thomas Babb, David G. Komarov, Alexander S. Heorton, Harold Belter, H. Jakob Aksenov, Yevgeny |
author_sort |
Landy, Jack Christopher |
title |
A year-round satellite sea-ice thickness record from CryoSat-2 |
title_short |
A year-round satellite sea-ice thickness record from CryoSat-2 |
title_full |
A year-round satellite sea-ice thickness record from CryoSat-2 |
title_fullStr |
A year-round satellite sea-ice thickness record from CryoSat-2 |
title_full_unstemmed |
A year-round satellite sea-ice thickness record from CryoSat-2 |
title_sort |
year-round satellite sea-ice thickness record from cryosat-2 |
publisher |
Springer Nature |
publishDate |
2022 |
url |
https://hdl.handle.net/10037/26936 https://doi.org/10.1038/s41586-022-05058-5 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic ice pack Sea ice |
genre_facet |
Arctic ice pack Sea ice |
op_relation |
Nature Norges forskningsråd: 328957 Norges forskningsråd: 237906 https://www.nature.com/articles/s41586-022-05058-5 Landy JC, Dawson G, Tsamados M, Bushuk M, Stroeve JC, Howell S, Krumpen T, Babb DG, Komarov AS, Heorton H, Belter HJ, Aksenov Y. A year-round satellite sea-ice thickness record from CryoSat-2. Nature. 2022;609:517-522 FRIDAID 2056559 doi:10.1038/s41586-022-05058-5 0028-0836 1476-4687 https://hdl.handle.net/10037/26936 |
op_rights |
openAccess Copyright 2022 The Author(s) |
op_doi |
https://doi.org/10.1038/s41586-022-05058-5 |
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Nature |
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609 |
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7927 |
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517 |
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522 |
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1766307378335055872 |