Sea-ice deformation in a coupled ocean–sea-ice model and in satellite remote sensing data
A realistic representation of sea-ice deformation in models is important for accurate simulation of the sea-ice mass balance. Simulated sea-ice deformation from numerical simulations with 4.5, 9, and 18 km horizontal grid spacing and a viscous–plastic (VP) sea-ice rheology are compared with syntheti...
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Copernicus Publications
2017
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00009705 2023-05-15T18:16:11+02:00 Sea-ice deformation in a coupled ocean–sea-ice model and in satellite remote sensing data Spreen, Gunnar Kwok, Ron Menemenlis, Dimitris Nguyen, An T. 2017-07 electronic https://doi.org/10.5194/tc-11-1553-2017 https://noa.gwlb.de/receive/cop_mods_00009705 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00009662/tc-11-1553-2017.pdf https://tc.copernicus.org/articles/11/1553/2017/tc-11-1553-2017.pdf eng eng Copernicus Publications The Cryosphere -- ˜Theœ Cryosphere -- http://www.bibliothek.uni-regensburg.de/ezeit/?2393169 -- http://www.the-cryosphere.net/ -- 1994-0424 https://doi.org/10.5194/tc-11-1553-2017 https://noa.gwlb.de/receive/cop_mods_00009705 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00009662/tc-11-1553-2017.pdf https://tc.copernicus.org/articles/11/1553/2017/tc-11-1553-2017.pdf uneingeschränkt info:eu-repo/semantics/openAccess article Verlagsveröffentlichung article Text doc-type:article 2017 ftnonlinearchiv https://doi.org/10.5194/tc-11-1553-2017 2022-02-08T22:57:24Z A realistic representation of sea-ice deformation in models is important for accurate simulation of the sea-ice mass balance. Simulated sea-ice deformation from numerical simulations with 4.5, 9, and 18 km horizontal grid spacing and a viscous–plastic (VP) sea-ice rheology are compared with synthetic aperture radar (SAR) satellite observations (RGPS, RADARSAT Geophysical Processor System) for the time period 1996–2008. All three simulations can reproduce the large-scale ice deformation patterns, but small-scale sea-ice deformations and linear kinematic features (LKFs) are not adequately reproduced. The mean sea-ice total deformation rate is about 40 % lower in all model solutions than in the satellite observations, especially in the seasonal sea-ice zone. A decrease in model grid spacing, however, produces a higher density and more localized ice deformation features. The 4.5 km simulation produces some linear kinematic features, but not with the right frequency. The dependence on length scale and probability density functions (PDFs) of absolute divergence and shear for all three model solutions show a power-law scaling behavior similar to RGPS observations, contrary to what was found in some previous studies. Overall, the 4.5 km simulation produces the most realistic divergence, vorticity, and shear when compared with RGPS data. This study provides an evaluation of high and coarse-resolution viscous–plastic sea-ice simulations based on spatial distribution, time series, and power-law scaling metrics. Article in Journal/Newspaper Sea ice The Cryosphere Niedersächsisches Online-Archiv NOA The Cryosphere 11 4 1553 1573 |
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English |
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article Verlagsveröffentlichung |
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article Verlagsveröffentlichung Spreen, Gunnar Kwok, Ron Menemenlis, Dimitris Nguyen, An T. Sea-ice deformation in a coupled ocean–sea-ice model and in satellite remote sensing data |
topic_facet |
article Verlagsveröffentlichung |
description |
A realistic representation of sea-ice deformation in models is important for accurate simulation of the sea-ice mass balance. Simulated sea-ice deformation from numerical simulations with 4.5, 9, and 18 km horizontal grid spacing and a viscous–plastic (VP) sea-ice rheology are compared with synthetic aperture radar (SAR) satellite observations (RGPS, RADARSAT Geophysical Processor System) for the time period 1996–2008. All three simulations can reproduce the large-scale ice deformation patterns, but small-scale sea-ice deformations and linear kinematic features (LKFs) are not adequately reproduced. The mean sea-ice total deformation rate is about 40 % lower in all model solutions than in the satellite observations, especially in the seasonal sea-ice zone. A decrease in model grid spacing, however, produces a higher density and more localized ice deformation features. The 4.5 km simulation produces some linear kinematic features, but not with the right frequency. The dependence on length scale and probability density functions (PDFs) of absolute divergence and shear for all three model solutions show a power-law scaling behavior similar to RGPS observations, contrary to what was found in some previous studies. Overall, the 4.5 km simulation produces the most realistic divergence, vorticity, and shear when compared with RGPS data. This study provides an evaluation of high and coarse-resolution viscous–plastic sea-ice simulations based on spatial distribution, time series, and power-law scaling metrics. |
format |
Article in Journal/Newspaper |
author |
Spreen, Gunnar Kwok, Ron Menemenlis, Dimitris Nguyen, An T. |
author_facet |
Spreen, Gunnar Kwok, Ron Menemenlis, Dimitris Nguyen, An T. |
author_sort |
Spreen, Gunnar |
title |
Sea-ice deformation in a coupled ocean–sea-ice model and in satellite remote sensing data |
title_short |
Sea-ice deformation in a coupled ocean–sea-ice model and in satellite remote sensing data |
title_full |
Sea-ice deformation in a coupled ocean–sea-ice model and in satellite remote sensing data |
title_fullStr |
Sea-ice deformation in a coupled ocean–sea-ice model and in satellite remote sensing data |
title_full_unstemmed |
Sea-ice deformation in a coupled ocean–sea-ice model and in satellite remote sensing data |
title_sort |
sea-ice deformation in a coupled ocean–sea-ice model and in satellite remote sensing data |
publisher |
Copernicus Publications |
publishDate |
2017 |
url |
https://doi.org/10.5194/tc-11-1553-2017 https://noa.gwlb.de/receive/cop_mods_00009705 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00009662/tc-11-1553-2017.pdf https://tc.copernicus.org/articles/11/1553/2017/tc-11-1553-2017.pdf |
genre |
Sea ice The Cryosphere |
genre_facet |
Sea ice The Cryosphere |
op_relation |
The Cryosphere -- ˜Theœ Cryosphere -- http://www.bibliothek.uni-regensburg.de/ezeit/?2393169 -- http://www.the-cryosphere.net/ -- 1994-0424 https://doi.org/10.5194/tc-11-1553-2017 https://noa.gwlb.de/receive/cop_mods_00009705 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00009662/tc-11-1553-2017.pdf https://tc.copernicus.org/articles/11/1553/2017/tc-11-1553-2017.pdf |
op_rights |
uneingeschränkt info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/tc-11-1553-2017 |
container_title |
The Cryosphere |
container_volume |
11 |
container_issue |
4 |
container_start_page |
1553 |
op_container_end_page |
1573 |
_version_ |
1766189624757059584 |