Representation of the Antarctic Circumpolar Current in the CMIP5 climate models and future changes under warming scenarios
The representation of the Antarctic Circumpolar Current (ACC) in the fifth Coupled Models Intercomparison Project (CMIP5) is generally improved over CMIP3. The range of modeled transports in the historical (1976–2006) scenario is reduced (90–264 Sv) compared with CMIP3 (33–337 Sv) with a mean of 155...
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American Geophysical Union
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ftnerc:oai:nora.nerc.ac.uk:19158 2023-05-15T13:45:12+02:00 Representation of the Antarctic Circumpolar Current in the CMIP5 climate models and future changes under warming scenarios Meijers, A.J.S. Shuckburgh, E. Bruneau, N. Sallee, J.-B. Bracegirdle, T.J. Wang, Z. 2012-12 text http://nora.nerc.ac.uk/id/eprint/19158/ https://nora.nerc.ac.uk/id/eprint/19158/1/jgrc12646.pdf https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2012JC008412 en eng American Geophysical Union https://nora.nerc.ac.uk/id/eprint/19158/1/jgrc12646.pdf Meijers, A.J.S. orcid:0000-0003-3876-7736 Shuckburgh, E. orcid:0000-0001-9206-3444 Bruneau, N.; Sallee, J.-B.; Bracegirdle, T.J. orcid:0000-0002-8868-4739 Wang, Z. 2012 Representation of the Antarctic Circumpolar Current in the CMIP5 climate models and future changes under warming scenarios. Journal of Geophysical Research, 117 (C12), C12008. 19, pp. https://doi.org/10.1029/2012JC008412 <https://doi.org/10.1029/2012JC008412> Publication - Article PeerReviewed 2012 ftnerc https://doi.org/10.1029/2012JC008412 2023-02-04T19:32:08Z The representation of the Antarctic Circumpolar Current (ACC) in the fifth Coupled Models Intercomparison Project (CMIP5) is generally improved over CMIP3. The range of modeled transports in the historical (1976–2006) scenario is reduced (90–264 Sv) compared with CMIP3 (33–337 Sv) with a mean of 155 ± 51 Sv. The large intermodel range is associated with significant differences in the ACC density structure. The ACC position is accurately represented at most longitudes, with a small (1.27°) standard deviation in mean latitude. The westerly wind jet driving the ACC is biased too strong and too far north on average. Unlike CMIP3 there is no correlation between modeled ACC latitude and the position of the westerly wind jet. Under future climate forcing scenarios (2070–2099 mean) the modeled ACC transport changes by between −26 to +17 Sv and the ACC shifts polewards (equatorwards) in models where the transport increases (decreases). There is no significant correlation between the ACC position change and that of the westerly wind jet, which shifts polewards and strengthens. The subtropical gyres strengthen and expand southwards, while the change in subpolar gyre area varies between models. An increase in subpolar gyre area corresponds with a decreases in ACC transport and an equatorward shift in the ACC position, and vice versa for a contraction of the gyre area. There is a general decrease in density in the upper 1000 m, particularly equatorwards of the ACC core. Article in Journal/Newspaper Antarc* Antarctic Natural Environment Research Council: NERC Open Research Archive Antarctic The Antarctic Journal of Geophysical Research: Oceans 117 C12 n/a n/a |
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Open Polar |
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Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
English |
description |
The representation of the Antarctic Circumpolar Current (ACC) in the fifth Coupled Models Intercomparison Project (CMIP5) is generally improved over CMIP3. The range of modeled transports in the historical (1976–2006) scenario is reduced (90–264 Sv) compared with CMIP3 (33–337 Sv) with a mean of 155 ± 51 Sv. The large intermodel range is associated with significant differences in the ACC density structure. The ACC position is accurately represented at most longitudes, with a small (1.27°) standard deviation in mean latitude. The westerly wind jet driving the ACC is biased too strong and too far north on average. Unlike CMIP3 there is no correlation between modeled ACC latitude and the position of the westerly wind jet. Under future climate forcing scenarios (2070–2099 mean) the modeled ACC transport changes by between −26 to +17 Sv and the ACC shifts polewards (equatorwards) in models where the transport increases (decreases). There is no significant correlation between the ACC position change and that of the westerly wind jet, which shifts polewards and strengthens. The subtropical gyres strengthen and expand southwards, while the change in subpolar gyre area varies between models. An increase in subpolar gyre area corresponds with a decreases in ACC transport and an equatorward shift in the ACC position, and vice versa for a contraction of the gyre area. There is a general decrease in density in the upper 1000 m, particularly equatorwards of the ACC core. |
format |
Article in Journal/Newspaper |
author |
Meijers, A.J.S. Shuckburgh, E. Bruneau, N. Sallee, J.-B. Bracegirdle, T.J. Wang, Z. |
spellingShingle |
Meijers, A.J.S. Shuckburgh, E. Bruneau, N. Sallee, J.-B. Bracegirdle, T.J. Wang, Z. Representation of the Antarctic Circumpolar Current in the CMIP5 climate models and future changes under warming scenarios |
author_facet |
Meijers, A.J.S. Shuckburgh, E. Bruneau, N. Sallee, J.-B. Bracegirdle, T.J. Wang, Z. |
author_sort |
Meijers, A.J.S. |
title |
Representation of the Antarctic Circumpolar Current in the CMIP5 climate models and future changes under warming scenarios |
title_short |
Representation of the Antarctic Circumpolar Current in the CMIP5 climate models and future changes under warming scenarios |
title_full |
Representation of the Antarctic Circumpolar Current in the CMIP5 climate models and future changes under warming scenarios |
title_fullStr |
Representation of the Antarctic Circumpolar Current in the CMIP5 climate models and future changes under warming scenarios |
title_full_unstemmed |
Representation of the Antarctic Circumpolar Current in the CMIP5 climate models and future changes under warming scenarios |
title_sort |
representation of the antarctic circumpolar current in the cmip5 climate models and future changes under warming scenarios |
publisher |
American Geophysical Union |
publishDate |
2012 |
url |
http://nora.nerc.ac.uk/id/eprint/19158/ https://nora.nerc.ac.uk/id/eprint/19158/1/jgrc12646.pdf https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2012JC008412 |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_relation |
https://nora.nerc.ac.uk/id/eprint/19158/1/jgrc12646.pdf Meijers, A.J.S. orcid:0000-0003-3876-7736 Shuckburgh, E. orcid:0000-0001-9206-3444 Bruneau, N.; Sallee, J.-B.; Bracegirdle, T.J. orcid:0000-0002-8868-4739 Wang, Z. 2012 Representation of the Antarctic Circumpolar Current in the CMIP5 climate models and future changes under warming scenarios. Journal of Geophysical Research, 117 (C12), C12008. 19, pp. https://doi.org/10.1029/2012JC008412 <https://doi.org/10.1029/2012JC008412> |
op_doi |
https://doi.org/10.1029/2012JC008412 |
container_title |
Journal of Geophysical Research: Oceans |
container_volume |
117 |
container_issue |
C12 |
container_start_page |
n/a |
op_container_end_page |
n/a |
_version_ |
1766216796956786688 |