Evaluation of simulated sea-ice concentrations from sea-ice/ocean models using satellite data and polynya classification methods
Sea-ice concentrations in the Laptev Sea simulated by the coupled North Atlantic–Arctic Ocean–Sea-Ice Model and Finite Element Sea-Ice Ocean Model are evaluated using sea-ice concentrations from Advanced Microwave Scanning Radiometer–Earth Observing System satellite data and a polynya classification...
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Language: | English |
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Norwegian Polar Institute
2011
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Online Access: | https://doi.org/10.3402/polar.v30i0.7124 https://doaj.org/article/d679b33cc0ee4e089548c0712484e35d |
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fttriple:oai:gotriple.eu:oai:doaj.org/article:d679b33cc0ee4e089548c0712484e35d 2023-05-15T14:54:50+02:00 Evaluation of simulated sea-ice concentrations from sea-ice/ocean models using satellite data and polynya classification methods Susanne Adams Sascha Willmes Günther Heinemann Polona Rozman Ralph Timmermann David Schröder 2011-05-01 https://doi.org/10.3402/polar.v30i0.7124 https://doaj.org/article/d679b33cc0ee4e089548c0712484e35d en eng Norwegian Polar Institute doi:10.3402/polar.v30i0.7124 0800-0395 1751-8369 https://doaj.org/article/d679b33cc0ee4e089548c0712484e35d undefined Polar Research, Vol 30, Iss 0, Pp 1-17 (2011) Polynyas sea ice sea-ice/ocean models remote sensing geo envir Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2011 fttriple https://doi.org/10.3402/polar.v30i0.7124 2023-01-22T19:35:19Z Sea-ice concentrations in the Laptev Sea simulated by the coupled North Atlantic–Arctic Ocean–Sea-Ice Model and Finite Element Sea-Ice Ocean Model are evaluated using sea-ice concentrations from Advanced Microwave Scanning Radiometer–Earth Observing System satellite data and a polynya classification method for winter 2007/08. While developed to simulate large-scale sea-ice conditions, both models are analysed here in terms of polynya simulation. The main modification of both models in this study is the implementation of a landfast-ice mask. Simulated sea-ice fields from different model runs are compared with emphasis placed on the impact of this prescribed landfast-ice mask. We demonstrate that sea-ice models are not able to simulate flaw polynyas realistically when used without fast-ice description. Our investigations indicate that without landfast ice and with coarse horizontal resolution the models overestimate the fraction of open water in the polynya. This is not because a realistic polynya appears but due to a larger-scale reduction of ice concentrations and smoothed ice-concentration fields. After implementation of a landfast-ice mask, the polynya location is realistically simulated but the total open-water area is still overestimated in most cases. The study shows that the fast-ice parameterization is essential for model improvements. However, further improvements are necessary in order to progress from the simulation of large-scale features in the Arctic towards a more detailed simulation of smaller-scaled features (here polynyas) in an Arctic shelf sea. Article in Journal/Newspaper Arctic Arctic Ocean Atlantic Arctic Atlantic-Arctic laptev Laptev Sea North Atlantic Polar Research Sea ice Unknown Arctic Arctic Ocean Laptev Sea Polar Research 30 1 7124 |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
fttriple |
language |
English |
topic |
Polynyas sea ice sea-ice/ocean models remote sensing geo envir |
spellingShingle |
Polynyas sea ice sea-ice/ocean models remote sensing geo envir Susanne Adams Sascha Willmes Günther Heinemann Polona Rozman Ralph Timmermann David Schröder Evaluation of simulated sea-ice concentrations from sea-ice/ocean models using satellite data and polynya classification methods |
topic_facet |
Polynyas sea ice sea-ice/ocean models remote sensing geo envir |
description |
Sea-ice concentrations in the Laptev Sea simulated by the coupled North Atlantic–Arctic Ocean–Sea-Ice Model and Finite Element Sea-Ice Ocean Model are evaluated using sea-ice concentrations from Advanced Microwave Scanning Radiometer–Earth Observing System satellite data and a polynya classification method for winter 2007/08. While developed to simulate large-scale sea-ice conditions, both models are analysed here in terms of polynya simulation. The main modification of both models in this study is the implementation of a landfast-ice mask. Simulated sea-ice fields from different model runs are compared with emphasis placed on the impact of this prescribed landfast-ice mask. We demonstrate that sea-ice models are not able to simulate flaw polynyas realistically when used without fast-ice description. Our investigations indicate that without landfast ice and with coarse horizontal resolution the models overestimate the fraction of open water in the polynya. This is not because a realistic polynya appears but due to a larger-scale reduction of ice concentrations and smoothed ice-concentration fields. After implementation of a landfast-ice mask, the polynya location is realistically simulated but the total open-water area is still overestimated in most cases. The study shows that the fast-ice parameterization is essential for model improvements. However, further improvements are necessary in order to progress from the simulation of large-scale features in the Arctic towards a more detailed simulation of smaller-scaled features (here polynyas) in an Arctic shelf sea. |
format |
Article in Journal/Newspaper |
author |
Susanne Adams Sascha Willmes Günther Heinemann Polona Rozman Ralph Timmermann David Schröder |
author_facet |
Susanne Adams Sascha Willmes Günther Heinemann Polona Rozman Ralph Timmermann David Schröder |
author_sort |
Susanne Adams |
title |
Evaluation of simulated sea-ice concentrations from sea-ice/ocean models using satellite data and polynya classification methods |
title_short |
Evaluation of simulated sea-ice concentrations from sea-ice/ocean models using satellite data and polynya classification methods |
title_full |
Evaluation of simulated sea-ice concentrations from sea-ice/ocean models using satellite data and polynya classification methods |
title_fullStr |
Evaluation of simulated sea-ice concentrations from sea-ice/ocean models using satellite data and polynya classification methods |
title_full_unstemmed |
Evaluation of simulated sea-ice concentrations from sea-ice/ocean models using satellite data and polynya classification methods |
title_sort |
evaluation of simulated sea-ice concentrations from sea-ice/ocean models using satellite data and polynya classification methods |
publisher |
Norwegian Polar Institute |
publishDate |
2011 |
url |
https://doi.org/10.3402/polar.v30i0.7124 https://doaj.org/article/d679b33cc0ee4e089548c0712484e35d |
geographic |
Arctic Arctic Ocean Laptev Sea |
geographic_facet |
Arctic Arctic Ocean Laptev Sea |
genre |
Arctic Arctic Ocean Atlantic Arctic Atlantic-Arctic laptev Laptev Sea North Atlantic Polar Research Sea ice |
genre_facet |
Arctic Arctic Ocean Atlantic Arctic Atlantic-Arctic laptev Laptev Sea North Atlantic Polar Research Sea ice |
op_source |
Polar Research, Vol 30, Iss 0, Pp 1-17 (2011) |
op_relation |
doi:10.3402/polar.v30i0.7124 0800-0395 1751-8369 https://doaj.org/article/d679b33cc0ee4e089548c0712484e35d |
op_rights |
undefined |
op_doi |
https://doi.org/10.3402/polar.v30i0.7124 |
container_title |
Polar Research |
container_volume |
30 |
container_issue |
1 |
container_start_page |
7124 |
_version_ |
1766326592363036672 |