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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Norwegian Polar Institute
2011
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Online Access: | https://oceanrep.geomar.de/id/eprint/26093/ https://oceanrep.geomar.de/id/eprint/26093/1/2011_Adams_etal_PolarResearch_7124-20635-1-PB.pdf http://www.polarresearch.net/index.php/polar/article/view/7124 https://doi.org/10.3402/polar.v30i0.7124 |
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ftoceanrep:oai:oceanrep.geomar.de:26093 2023-05-15T14:54:46+02:00 Evaluation of simulated sea-ice concentrations from sea-ice/ocean models using satellite data and polynya classification methods Adams, Susanne Willmes, Sascha Heinemann, Günther Rozman, Polona Timmermann, Ralph Schröder, David 2011 text https://oceanrep.geomar.de/id/eprint/26093/ https://oceanrep.geomar.de/id/eprint/26093/1/2011_Adams_etal_PolarResearch_7124-20635-1-PB.pdf http://www.polarresearch.net/index.php/polar/article/view/7124 https://doi.org/10.3402/polar.v30i0.7124 en eng Norwegian Polar Institute https://oceanrep.geomar.de/id/eprint/26093/1/2011_Adams_etal_PolarResearch_7124-20635-1-PB.pdf Adams, S., Willmes, S., Heinemann, G., Rozman, P., Timmermann, R. and Schröder, D. (2011) Evaluation of simulated sea-ice concentrations from sea-ice/ocean models using satellite data and polynya classification methods. Polar Research, 30 (7124). DOI 10.3402/polar.v30i0.7124 <https://doi.org/10.3402/polar.v30i0.7124>. doi:10.3402/polar.v30i0.7124 cc_by_nc Article PeerReviewed 2011 ftoceanrep https://doi.org/10.3402/polar.v30i0.7124 2023-04-07T15:15:19Z 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 largescale 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 OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Arctic Arctic Ocean Laptev Sea Polar Research 30 1 7124 |
institution |
Open Polar |
collection |
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
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ftoceanrep |
language |
English |
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 largescale 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 |
Adams, Susanne Willmes, Sascha Heinemann, Günther Rozman, Polona Timmermann, Ralph Schröder, David |
spellingShingle |
Adams, Susanne Willmes, Sascha Heinemann, Günther Rozman, Polona Timmermann, Ralph Schröder, David Evaluation of simulated sea-ice concentrations from sea-ice/ocean models using satellite data and polynya classification methods |
author_facet |
Adams, Susanne Willmes, Sascha Heinemann, Günther Rozman, Polona Timmermann, Ralph Schröder, David |
author_sort |
Adams, Susanne |
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://oceanrep.geomar.de/id/eprint/26093/ https://oceanrep.geomar.de/id/eprint/26093/1/2011_Adams_etal_PolarResearch_7124-20635-1-PB.pdf http://www.polarresearch.net/index.php/polar/article/view/7124 https://doi.org/10.3402/polar.v30i0.7124 |
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_relation |
https://oceanrep.geomar.de/id/eprint/26093/1/2011_Adams_etal_PolarResearch_7124-20635-1-PB.pdf Adams, S., Willmes, S., Heinemann, G., Rozman, P., Timmermann, R. and Schröder, D. (2011) Evaluation of simulated sea-ice concentrations from sea-ice/ocean models using satellite data and polynya classification methods. Polar Research, 30 (7124). DOI 10.3402/polar.v30i0.7124 <https://doi.org/10.3402/polar.v30i0.7124>. doi:10.3402/polar.v30i0.7124 |
op_rights |
cc_by_nc |
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_ |
1766326523707523072 |