The sensitivity of sea-ice brine fraction to the freezing temperature and orientation
The changing conditions in which sea ice forms and exists are likely to affect the properties of sea ice itself, and potential climate feedbacks need to be identified and understood to improve future projections. Here we perform a set of idealised laboratory experiments that model sea-ice growth und...
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| Format: | Article |
| Language: | English |
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Cambridge University Press
2024-01-01
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| Series: | Annals of Glaciology |
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| Online Access: | https://www.cambridge.org/core/product/identifier/S0260305524000363/type/journal_article |
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| author | Kial Douglas Stewart William Palm Callum James Shakespeare Noa Kraitzman |
| author_facet | Kial Douglas Stewart William Palm Callum James Shakespeare Noa Kraitzman |
| author_sort | Kial Douglas Stewart |
| collection | DOAJ |
| description | The changing conditions in which sea ice forms and exists are likely to affect the properties of sea ice itself, and potential climate feedbacks need to be identified and understood to improve future projections. Here we perform a set of idealised laboratory experiments that model sea-ice growth under a range of freezing conditions. The results confirm existing theories; sea-ice growth rate is largest for cooler freezing temperatures, fresher ambient salinities and cases with bottom cooling. Our primary metric of interest is the brine fraction (the volume ratio of brine inclusions to the total sea ice), which we quantify and determine its sensitivity with respect to the ambient salinity, freezing temperature and, for the first time, the freezing direction. We find that the brine fraction of our model sea ice is most sensitive to freezing temperature, and increases 2.5% per 1$^\circ$C increase of freezing temperature. |
| format | Article |
| id | doaj-art-e495d306908645f1bac7d0e9ec15c376 |
| institution | OA Journals |
| issn | 0260-3055 1727-5644 |
| language | English |
| publishDate | 2024-01-01 |
| publisher | Cambridge University Press |
| record_format | Article |
| series | Annals of Glaciology |
| spelling | doaj-art-e495d306908645f1bac7d0e9ec15c3762025-08-20T02:15:47ZengCambridge University PressAnnals of Glaciology0260-30551727-56442024-01-016510.1017/aog.2024.36The sensitivity of sea-ice brine fraction to the freezing temperature and orientationKial Douglas Stewart0https://orcid.org/0000-0002-9947-1958William Palm1Callum James Shakespeare2Noa Kraitzman3Climate & Fluid Physics Laboratory, Australian National University, Acton, Australia Australian Research Council Centre of Excellence for Climate Extremes, University of New South Wales, Sydney, AustraliaClimate & Fluid Physics Laboratory, Australian National University, Acton, Australia Australian Research Council Centre of Excellence for Climate Extremes, University of New South Wales, Sydney, AustraliaClimate & Fluid Physics Laboratory, Australian National University, Acton, Australia Australian Research Council Centre of Excellence for Climate Extremes, University of New South Wales, Sydney, AustraliaSchool of Mathematical and Physical Sciences, Macquarie University, Sydney, AustraliaThe changing conditions in which sea ice forms and exists are likely to affect the properties of sea ice itself, and potential climate feedbacks need to be identified and understood to improve future projections. Here we perform a set of idealised laboratory experiments that model sea-ice growth under a range of freezing conditions. The results confirm existing theories; sea-ice growth rate is largest for cooler freezing temperatures, fresher ambient salinities and cases with bottom cooling. Our primary metric of interest is the brine fraction (the volume ratio of brine inclusions to the total sea ice), which we quantify and determine its sensitivity with respect to the ambient salinity, freezing temperature and, for the first time, the freezing direction. We find that the brine fraction of our model sea ice is most sensitive to freezing temperature, and increases 2.5% per 1$^\circ$C increase of freezing temperature.https://www.cambridge.org/core/product/identifier/S0260305524000363/type/journal_articlesea icesea-ice growth and decaysea-ice modelling |
| spellingShingle | Kial Douglas Stewart William Palm Callum James Shakespeare Noa Kraitzman The sensitivity of sea-ice brine fraction to the freezing temperature and orientation Annals of Glaciology sea ice sea-ice growth and decay sea-ice modelling |
| title | The sensitivity of sea-ice brine fraction to the freezing temperature and orientation |
| title_full | The sensitivity of sea-ice brine fraction to the freezing temperature and orientation |
| title_fullStr | The sensitivity of sea-ice brine fraction to the freezing temperature and orientation |
| title_full_unstemmed | The sensitivity of sea-ice brine fraction to the freezing temperature and orientation |
| title_short | The sensitivity of sea-ice brine fraction to the freezing temperature and orientation |
| title_sort | sensitivity of sea ice brine fraction to the freezing temperature and orientation |
| topic | sea ice sea-ice growth and decay sea-ice modelling |
| url | https://www.cambridge.org/core/product/identifier/S0260305524000363/type/journal_article |
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