A 1-D modelling study of Arctic sea-ice salinity
We use a 1-D model to study how salinity evolves in Arctic sea ice. To do so, we first explore how sea-ice surface melt and flooding can be incorporated into the 1-D thermodynamic Semi-Adaptive Multi-phase Sea-Ice Model (SAMSIM) presented by Griewank and Notz (2013). We introduce flooding and a flus...
Published in: | The Cryosphere |
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2015
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00017616 2023-05-15T14:48:10+02:00 A 1-D modelling study of Arctic sea-ice salinity Griewank, P. J. Notz, D. 2015-02 electronic https://doi.org/10.5194/tc-9-305-2015 https://noa.gwlb.de/receive/cop_mods_00017616 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00017571/tc-9-305-2015.pdf https://tc.copernicus.org/articles/9/305/2015/tc-9-305-2015.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-9-305-2015 https://noa.gwlb.de/receive/cop_mods_00017616 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00017571/tc-9-305-2015.pdf https://tc.copernicus.org/articles/9/305/2015/tc-9-305-2015.pdf uneingeschränkt info:eu-repo/semantics/openAccess article Verlagsveröffentlichung article Text doc-type:article 2015 ftnonlinearchiv https://doi.org/10.5194/tc-9-305-2015 2022-02-08T22:53:36Z We use a 1-D model to study how salinity evolves in Arctic sea ice. To do so, we first explore how sea-ice surface melt and flooding can be incorporated into the 1-D thermodynamic Semi-Adaptive Multi-phase Sea-Ice Model (SAMSIM) presented by Griewank and Notz (2013). We introduce flooding and a flushing parametrization which treats sea ice as a hydraulic network of horizontal and vertical fluxes. Forcing SAMSIM with 36 years of ERA-interim atmospheric reanalysis data, we obtain a modelled Arctic sea-ice salinity that agrees well with ice-core measurements. The simulations thus allow us to identify the main drivers of the observed mean salinity profile in Arctic sea ice. Our results show a 1.5–4 g kg−1 decrease of bulk salinity via gravity drainage after ice growth has ceased and before flushing sets in, which hinders approximating bulk salinity from ice thickness beyond the first growth season. In our simulations, salinity interannual variability of first-year ice is mostly restricted to the top 20 cm. We find that ice thickness, thermal resistivity, freshwater column, and stored energy change by less than 5% on average when the full salinity parametrization is replaced with a prescribed salinity profile. Article in Journal/Newspaper Arctic ice core Sea ice The Cryosphere Niedersächsisches Online-Archiv NOA Arctic The Cryosphere 9 1 305 329 |
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English |
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article Verlagsveröffentlichung |
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article Verlagsveröffentlichung Griewank, P. J. Notz, D. A 1-D modelling study of Arctic sea-ice salinity |
topic_facet |
article Verlagsveröffentlichung |
description |
We use a 1-D model to study how salinity evolves in Arctic sea ice. To do so, we first explore how sea-ice surface melt and flooding can be incorporated into the 1-D thermodynamic Semi-Adaptive Multi-phase Sea-Ice Model (SAMSIM) presented by Griewank and Notz (2013). We introduce flooding and a flushing parametrization which treats sea ice as a hydraulic network of horizontal and vertical fluxes. Forcing SAMSIM with 36 years of ERA-interim atmospheric reanalysis data, we obtain a modelled Arctic sea-ice salinity that agrees well with ice-core measurements. The simulations thus allow us to identify the main drivers of the observed mean salinity profile in Arctic sea ice. Our results show a 1.5–4 g kg−1 decrease of bulk salinity via gravity drainage after ice growth has ceased and before flushing sets in, which hinders approximating bulk salinity from ice thickness beyond the first growth season. In our simulations, salinity interannual variability of first-year ice is mostly restricted to the top 20 cm. We find that ice thickness, thermal resistivity, freshwater column, and stored energy change by less than 5% on average when the full salinity parametrization is replaced with a prescribed salinity profile. |
format |
Article in Journal/Newspaper |
author |
Griewank, P. J. Notz, D. |
author_facet |
Griewank, P. J. Notz, D. |
author_sort |
Griewank, P. J. |
title |
A 1-D modelling study of Arctic sea-ice salinity |
title_short |
A 1-D modelling study of Arctic sea-ice salinity |
title_full |
A 1-D modelling study of Arctic sea-ice salinity |
title_fullStr |
A 1-D modelling study of Arctic sea-ice salinity |
title_full_unstemmed |
A 1-D modelling study of Arctic sea-ice salinity |
title_sort |
1-d modelling study of arctic sea-ice salinity |
publisher |
Copernicus Publications |
publishDate |
2015 |
url |
https://doi.org/10.5194/tc-9-305-2015 https://noa.gwlb.de/receive/cop_mods_00017616 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00017571/tc-9-305-2015.pdf https://tc.copernicus.org/articles/9/305/2015/tc-9-305-2015.pdf |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic ice core Sea ice The Cryosphere |
genre_facet |
Arctic ice core 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-9-305-2015 https://noa.gwlb.de/receive/cop_mods_00017616 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00017571/tc-9-305-2015.pdf https://tc.copernicus.org/articles/9/305/2015/tc-9-305-2015.pdf |
op_rights |
uneingeschränkt info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/tc-9-305-2015 |
container_title |
The Cryosphere |
container_volume |
9 |
container_issue |
1 |
container_start_page |
305 |
op_container_end_page |
329 |
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1766319240486322176 |