The impact of polynyas on the stability of the thermohaline circulation as simulation in a coupled ocean-atmosphere-sea ice box model
This study uses a box model of the North Atlantic Ocean to test the stability of the thermohaline circulation under two different climatic regimes: a warmer regime where deepwater formation occurs through open ocean convection; and a cooler regime where deepwater formation occurs with the aid of bri...
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Online Access: | https://eprints.utas.edu.au/7037/ https://eprints.utas.edu.au/7037/1/grig_holb_2001.pdf https://doi.org/10.1029/2000GL011982 |
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ftunivtasmania:oai:eprints.utas.edu.au:7037 2023-05-15T17:32:18+02:00 The impact of polynyas on the stability of the thermohaline circulation as simulation in a coupled ocean-atmosphere-sea ice box model Grigg, SB Holbrook, NJ 2001-03 application/pdf https://eprints.utas.edu.au/7037/ https://eprints.utas.edu.au/7037/1/grig_holb_2001.pdf https://doi.org/10.1029/2000GL011982 en eng https://eprints.utas.edu.au/7037/1/grig_holb_2001.pdf Grigg, SB and Holbrook, NJ 2001 , 'The impact of polynyas on the stability of the thermohaline circulation as simulation in a coupled ocean-atmosphere-sea ice box model' , Geophysical Research Letters, vol. 28, no. 5 , pp. 767-770 , doi:10.1029/2000GL011982 <http://dx.doi.org/10.1029/2000GL011982>. cc_utas 260403 Physical Oceanography Article PeerReviewed 2001 ftunivtasmania https://doi.org/10.1029/2000GL011982 2020-05-30T07:20:49Z This study uses a box model of the North Atlantic Ocean to test the stability of the thermohaline circulation under two different climatic regimes: a warmer regime where deepwater formation occurs through open ocean convection; and a cooler regime where deepwater formation occurs with the aid of brine rejection from sea ice formation. We find that the brine rejection mechanism produces a more stable modeled thermohaline circulation than the open ocean convection mechanism, i.e. a circulation which is able to withstand a larger high latitude freshwater perturbation. These results demonstrate that the effects of leads and polynyas on brine rejection rates are important and suggest that the presence of open water within modeled sea ice contributes significantly to the sensitivity of the climate response and cannot easily be ignored. Article in Journal/Newspaper North Atlantic Sea ice University of Tasmania: UTas ePrints Geophysical Research Letters 28 5 767 770 |
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Open Polar |
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University of Tasmania: UTas ePrints |
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ftunivtasmania |
language |
English |
topic |
260403 Physical Oceanography |
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260403 Physical Oceanography Grigg, SB Holbrook, NJ The impact of polynyas on the stability of the thermohaline circulation as simulation in a coupled ocean-atmosphere-sea ice box model |
topic_facet |
260403 Physical Oceanography |
description |
This study uses a box model of the North Atlantic Ocean to test the stability of the thermohaline circulation under two different climatic regimes: a warmer regime where deepwater formation occurs through open ocean convection; and a cooler regime where deepwater formation occurs with the aid of brine rejection from sea ice formation. We find that the brine rejection mechanism produces a more stable modeled thermohaline circulation than the open ocean convection mechanism, i.e. a circulation which is able to withstand a larger high latitude freshwater perturbation. These results demonstrate that the effects of leads and polynyas on brine rejection rates are important and suggest that the presence of open water within modeled sea ice contributes significantly to the sensitivity of the climate response and cannot easily be ignored. |
format |
Article in Journal/Newspaper |
author |
Grigg, SB Holbrook, NJ |
author_facet |
Grigg, SB Holbrook, NJ |
author_sort |
Grigg, SB |
title |
The impact of polynyas on the stability of the thermohaline circulation as simulation in a coupled ocean-atmosphere-sea ice box model |
title_short |
The impact of polynyas on the stability of the thermohaline circulation as simulation in a coupled ocean-atmosphere-sea ice box model |
title_full |
The impact of polynyas on the stability of the thermohaline circulation as simulation in a coupled ocean-atmosphere-sea ice box model |
title_fullStr |
The impact of polynyas on the stability of the thermohaline circulation as simulation in a coupled ocean-atmosphere-sea ice box model |
title_full_unstemmed |
The impact of polynyas on the stability of the thermohaline circulation as simulation in a coupled ocean-atmosphere-sea ice box model |
title_sort |
impact of polynyas on the stability of the thermohaline circulation as simulation in a coupled ocean-atmosphere-sea ice box model |
publishDate |
2001 |
url |
https://eprints.utas.edu.au/7037/ https://eprints.utas.edu.au/7037/1/grig_holb_2001.pdf https://doi.org/10.1029/2000GL011982 |
genre |
North Atlantic Sea ice |
genre_facet |
North Atlantic Sea ice |
op_relation |
https://eprints.utas.edu.au/7037/1/grig_holb_2001.pdf Grigg, SB and Holbrook, NJ 2001 , 'The impact of polynyas on the stability of the thermohaline circulation as simulation in a coupled ocean-atmosphere-sea ice box model' , Geophysical Research Letters, vol. 28, no. 5 , pp. 767-770 , doi:10.1029/2000GL011982 <http://dx.doi.org/10.1029/2000GL011982>. |
op_rights |
cc_utas |
op_doi |
https://doi.org/10.1029/2000GL011982 |
container_title |
Geophysical Research Letters |
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28 |
container_issue |
5 |
container_start_page |
767 |
op_container_end_page |
770 |
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1766130359969251328 |