Improving Arctic sea-ice thickness estimates with the assimilation of CryoSat-2 summer observations
Rapidly shrinking Arctic sea ice has had significant impacts on the Arctic Ocean and many outer Arctic regions. It is therefore urgently needed to reliably estimate Arctic sea-ice thickness (SIT) by combined use of available observation and numerical modeling. Here, for the first time, we assimilate...
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2023
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Online Access: | http://dx.doi.org/10.22541/essoar.167751596.64034339/v1 |
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crwinnower:10.22541/essoar.167751596.64034339/v1 2024-06-02T08:00:19+00:00 Improving Arctic sea-ice thickness estimates with the assimilation of CryoSat-2 summer observations Min, Chao Yang, Qinghua Luo, Hao Landy, Jack Christopher Chen, Dake Dawson, Geoffrey Joseph Krumpen, Thomas Mamnun, Nabir Liu, Xiaoyu Nerger, Lars 2023 http://dx.doi.org/10.22541/essoar.167751596.64034339/v1 unknown Authorea, Inc. posted-content 2023 crwinnower https://doi.org/10.22541/essoar.167751596.64034339/v1 2024-05-07T14:19:23Z Rapidly shrinking Arctic sea ice has had significant impacts on the Arctic Ocean and many outer Arctic regions. It is therefore urgently needed to reliably estimate Arctic sea-ice thickness (SIT) by combined use of available observation and numerical modeling. Here, for the first time, we assimilate the latest CryoSat-2 summer SIT data into a coupled ice-ocean model. In particular, an Incremental Analysis Update scheme is implemented to overcome the discontinuity brought by assimilating biweekly SIT and daily sea ice concentration data. Along with an improvement in sea ice volume, our SIT estimates have smaller errors than that without SIT assimilation in areas where the sea ice is roughest and experiences strong deformation, e.g., around the Fram Strait and Greenland. This study suggests that the newly-developed CryoSat-2 SIT product, when assimilated properly with our approach, has great potential for Arctic sea ice simulation and prediction. Other/Unknown Material Arctic Arctic Ocean Fram Strait Greenland Sea ice The Winnower Arctic Arctic Ocean Greenland |
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The Winnower |
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crwinnower |
language |
unknown |
description |
Rapidly shrinking Arctic sea ice has had significant impacts on the Arctic Ocean and many outer Arctic regions. It is therefore urgently needed to reliably estimate Arctic sea-ice thickness (SIT) by combined use of available observation and numerical modeling. Here, for the first time, we assimilate the latest CryoSat-2 summer SIT data into a coupled ice-ocean model. In particular, an Incremental Analysis Update scheme is implemented to overcome the discontinuity brought by assimilating biweekly SIT and daily sea ice concentration data. Along with an improvement in sea ice volume, our SIT estimates have smaller errors than that without SIT assimilation in areas where the sea ice is roughest and experiences strong deformation, e.g., around the Fram Strait and Greenland. This study suggests that the newly-developed CryoSat-2 SIT product, when assimilated properly with our approach, has great potential for Arctic sea ice simulation and prediction. |
format |
Other/Unknown Material |
author |
Min, Chao Yang, Qinghua Luo, Hao Landy, Jack Christopher Chen, Dake Dawson, Geoffrey Joseph Krumpen, Thomas Mamnun, Nabir Liu, Xiaoyu Nerger, Lars |
spellingShingle |
Min, Chao Yang, Qinghua Luo, Hao Landy, Jack Christopher Chen, Dake Dawson, Geoffrey Joseph Krumpen, Thomas Mamnun, Nabir Liu, Xiaoyu Nerger, Lars Improving Arctic sea-ice thickness estimates with the assimilation of CryoSat-2 summer observations |
author_facet |
Min, Chao Yang, Qinghua Luo, Hao Landy, Jack Christopher Chen, Dake Dawson, Geoffrey Joseph Krumpen, Thomas Mamnun, Nabir Liu, Xiaoyu Nerger, Lars |
author_sort |
Min, Chao |
title |
Improving Arctic sea-ice thickness estimates with the assimilation of CryoSat-2 summer observations |
title_short |
Improving Arctic sea-ice thickness estimates with the assimilation of CryoSat-2 summer observations |
title_full |
Improving Arctic sea-ice thickness estimates with the assimilation of CryoSat-2 summer observations |
title_fullStr |
Improving Arctic sea-ice thickness estimates with the assimilation of CryoSat-2 summer observations |
title_full_unstemmed |
Improving Arctic sea-ice thickness estimates with the assimilation of CryoSat-2 summer observations |
title_sort |
improving arctic sea-ice thickness estimates with the assimilation of cryosat-2 summer observations |
publisher |
Authorea, Inc. |
publishDate |
2023 |
url |
http://dx.doi.org/10.22541/essoar.167751596.64034339/v1 |
geographic |
Arctic Arctic Ocean Greenland |
geographic_facet |
Arctic Arctic Ocean Greenland |
genre |
Arctic Arctic Ocean Fram Strait Greenland Sea ice |
genre_facet |
Arctic Arctic Ocean Fram Strait Greenland Sea ice |
op_doi |
https://doi.org/10.22541/essoar.167751596.64034339/v1 |
_version_ |
1800744305726324736 |