Thermodynamic sea ice growth in the central Weddell Sea, observed in upward-looking sonar data
Upward-looking sonar (ULS) data were used to analyze thermodynamic sea ice growth. The study was carried out for an ocean region in the central Weddell Sea, for which data of sea ice thickness variability and of the oceanic heat flux through the ice are rare. In the study area the contribution of se...
Published in: | Journal of Geophysical Research: Oceans |
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American Geophysical Union
2015
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Online Access: | https://epic.awi.de/id/eprint/37695/ https://epic.awi.de/id/eprint/37695/1/Behrendt_et_al_revised.pdf https://doi.org/10.1002/2014JC010408 https://hdl.handle.net/10013/epic.45374 https://hdl.handle.net/10013/epic.45374.d001 |
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ftawi:oai:epic.awi.de:37695 2024-09-15T18:34:11+00:00 Thermodynamic sea ice growth in the central Weddell Sea, observed in upward-looking sonar data Behrendt, Axel Dierking, Wolfgang Witte, Hannelore 2015-03-27 application/pdf https://epic.awi.de/id/eprint/37695/ https://epic.awi.de/id/eprint/37695/1/Behrendt_et_al_revised.pdf https://doi.org/10.1002/2014JC010408 https://hdl.handle.net/10013/epic.45374 https://hdl.handle.net/10013/epic.45374.d001 unknown American Geophysical Union https://epic.awi.de/id/eprint/37695/1/Behrendt_et_al_revised.pdf https://hdl.handle.net/10013/epic.45374.d001 Behrendt, A. orcid:0000-0001-5746-1631 , Dierking, W. orcid:0000-0002-5031-648X and Witte, H. (2015) Thermodynamic sea ice growth in the central Weddell Sea, observed in upward-looking sonar data , Journal of Geophysical Research: Oceans, 120 (3), pp. 2270-2286 . doi:10.1002/2014JC010408 <https://doi.org/10.1002/2014JC010408> , hdl:10013/epic.45374 EPIC3Journal of Geophysical Research: Oceans, American Geophysical Union, 120(3), pp. 2270-2286, ISSN: 21699275 Article isiRev 2015 ftawi https://doi.org/10.1002/2014JC010408 2024-06-24T04:11:05Z Upward-looking sonar (ULS) data were used to analyze thermodynamic sea ice growth. The study was carried out for an ocean region in the central Weddell Sea, for which data of sea ice thickness variability and of the oceanic heat flux through the ice are rare. In the study area the contribution of sea ice deformation to vertical ice growth is relatively small in some years. This provides the opportunity to simulate thermodynamic sea ice growth considering the influence of a snow cover and of the oceanic heat flux. To this end, a modified version of Stefan’s law was used. The resulting ice thickness variations were then compared with the ULS measurements. For the investigated cases, the best consistency between data and model results was obtained assuming a snow layer of less than 5 cm thickness and average oceanic heat fluxes between 6 and 14 W m^-2. It is demonstrated that in conjunction with ice drift data and analytical models for thermal sea ice growth, ULS ice thickness measurements are useful for studying the seasonal cycle of growth and decay and for inferring the magnitude of the average oceanic heat flux under sea ice. Article in Journal/Newspaper Sea ice Weddell Sea Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Journal of Geophysical Research: Oceans 120 3 2270 2286 |
institution |
Open Polar |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
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ftawi |
language |
unknown |
description |
Upward-looking sonar (ULS) data were used to analyze thermodynamic sea ice growth. The study was carried out for an ocean region in the central Weddell Sea, for which data of sea ice thickness variability and of the oceanic heat flux through the ice are rare. In the study area the contribution of sea ice deformation to vertical ice growth is relatively small in some years. This provides the opportunity to simulate thermodynamic sea ice growth considering the influence of a snow cover and of the oceanic heat flux. To this end, a modified version of Stefan’s law was used. The resulting ice thickness variations were then compared with the ULS measurements. For the investigated cases, the best consistency between data and model results was obtained assuming a snow layer of less than 5 cm thickness and average oceanic heat fluxes between 6 and 14 W m^-2. It is demonstrated that in conjunction with ice drift data and analytical models for thermal sea ice growth, ULS ice thickness measurements are useful for studying the seasonal cycle of growth and decay and for inferring the magnitude of the average oceanic heat flux under sea ice. |
format |
Article in Journal/Newspaper |
author |
Behrendt, Axel Dierking, Wolfgang Witte, Hannelore |
spellingShingle |
Behrendt, Axel Dierking, Wolfgang Witte, Hannelore Thermodynamic sea ice growth in the central Weddell Sea, observed in upward-looking sonar data |
author_facet |
Behrendt, Axel Dierking, Wolfgang Witte, Hannelore |
author_sort |
Behrendt, Axel |
title |
Thermodynamic sea ice growth in the central Weddell Sea, observed in upward-looking sonar data |
title_short |
Thermodynamic sea ice growth in the central Weddell Sea, observed in upward-looking sonar data |
title_full |
Thermodynamic sea ice growth in the central Weddell Sea, observed in upward-looking sonar data |
title_fullStr |
Thermodynamic sea ice growth in the central Weddell Sea, observed in upward-looking sonar data |
title_full_unstemmed |
Thermodynamic sea ice growth in the central Weddell Sea, observed in upward-looking sonar data |
title_sort |
thermodynamic sea ice growth in the central weddell sea, observed in upward-looking sonar data |
publisher |
American Geophysical Union |
publishDate |
2015 |
url |
https://epic.awi.de/id/eprint/37695/ https://epic.awi.de/id/eprint/37695/1/Behrendt_et_al_revised.pdf https://doi.org/10.1002/2014JC010408 https://hdl.handle.net/10013/epic.45374 https://hdl.handle.net/10013/epic.45374.d001 |
genre |
Sea ice Weddell Sea |
genre_facet |
Sea ice Weddell Sea |
op_source |
EPIC3Journal of Geophysical Research: Oceans, American Geophysical Union, 120(3), pp. 2270-2286, ISSN: 21699275 |
op_relation |
https://epic.awi.de/id/eprint/37695/1/Behrendt_et_al_revised.pdf https://hdl.handle.net/10013/epic.45374.d001 Behrendt, A. orcid:0000-0001-5746-1631 , Dierking, W. orcid:0000-0002-5031-648X and Witte, H. (2015) Thermodynamic sea ice growth in the central Weddell Sea, observed in upward-looking sonar data , Journal of Geophysical Research: Oceans, 120 (3), pp. 2270-2286 . doi:10.1002/2014JC010408 <https://doi.org/10.1002/2014JC010408> , hdl:10013/epic.45374 |
op_doi |
https://doi.org/10.1002/2014JC010408 |
container_title |
Journal of Geophysical Research: Oceans |
container_volume |
120 |
container_issue |
3 |
container_start_page |
2270 |
op_container_end_page |
2286 |
_version_ |
1810475961330696192 |