Antarctic circumpolar current impacts on internal wave life cycles
Author Posting. © American Geophysical Union, 2021. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Geophysical Research Letters 48(8), (2021): e2020GL089471, https://doi.org/10.1029/2020GL08947...
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ftwhoas:oai:darchive.mblwhoilibrary.org:1912/27825 2023-05-15T13:48:31+02:00 Antarctic circumpolar current impacts on internal wave life cycles Waterman, Stephanie N. Meyer, Amelie Polzin, Kurt L. Naveira Garabato, Alberto C. Sheen, Katy L. 2021-02-16 https://hdl.handle.net/1912/27825 unknown American Geophysical Union https://doi.org/10.1029/2020GL089471 Waterman, S., Meyer, A., Polzin, K. L., Garabato, A. C. N., & Sheen, K. L. (2021). Antarctic circumpolar current impacts on internal wave life cycles. Geophysical Research Letters, 48(8), e2020GL089471. https://hdl.handle.net/1912/27825 doi:10.1029/2020GL089471 Waterman, S., Meyer, A., Polzin, K. L., Garabato, A. C. N., & Sheen, K. L. (2021). Antarctic circumpolar current impacts on internal wave life cycles. Geophysical Research Letters, 48(8), e2020GL089471. doi:10.1029/2020GL089471 Internal waves Internal wave-driven turbulent mixing Internal wave-mesoscale flow interactions Southern Ocean Article 2021 ftwhoas https://doi.org/10.1029/2020GL089471 2022-10-29T22:57:24Z Author Posting. © American Geophysical Union, 2021. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Geophysical Research Letters 48(8), (2021): e2020GL089471, https://doi.org/10.1029/2020GL089471. Major gaps exist in our understanding of the pathways between internal wave generation and breaking in the Southern Ocean, with important implications for the distribution of internal wave-driven mixing, the sensitivity of ocean mixing rates and patterns to changes in the ocean environment, and the necessary ingredients of mixing parameterizations. Here we assess the dominant processes in internal wave evolution by characterizing wave and mesoscale flow scales based on full-depth in situ measurements in a Southern Ocean mixing hot spot and a ray tracing calculation. The exercise highlights the importance of Antarctic Circumpolar Current jets as a dominant influence on internal wave life cycles through advection, the modification of wave characteristics via wave-mean flow interactions, and the set-up of critical layers for both upward- and downward-propagating waves. Our findings suggest that it is important to represent mesoscale flow impacts in parameterizations of internal wave-driven mixing in the Southern Ocean. The SOFine project was funded by the UK Natural Environmental Research Council (NERC) (grant NE/G001510/1). S. Waterman is currently supported by the National Science and Engineering Research Council of Canada (NSERC) Discovery Grant Program (NSERC-2020-05799). A. Meyer acknowledges current support from the ARC Centre of Excellence for Climate Extremes (CE170100023) and previous support from the joint CSIRO-University of Tasmania Quantitative Marine Science (QMS) program. A. N. Garabato acknowledges the support of the Royal Society and the Wolfson Foundation. Article in Journal/Newspaper Antarc* Antarctic Southern Ocean Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server) Antarctic Canada Southern Ocean Waterman ENVELOPE(175.417,175.417,-84.450,-84.450) Geophysical Research Letters 48 8 |
institution |
Open Polar |
collection |
Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server) |
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ftwhoas |
language |
unknown |
topic |
Internal waves Internal wave-driven turbulent mixing Internal wave-mesoscale flow interactions Southern Ocean |
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Internal waves Internal wave-driven turbulent mixing Internal wave-mesoscale flow interactions Southern Ocean Waterman, Stephanie N. Meyer, Amelie Polzin, Kurt L. Naveira Garabato, Alberto C. Sheen, Katy L. Antarctic circumpolar current impacts on internal wave life cycles |
topic_facet |
Internal waves Internal wave-driven turbulent mixing Internal wave-mesoscale flow interactions Southern Ocean |
description |
Author Posting. © American Geophysical Union, 2021. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Geophysical Research Letters 48(8), (2021): e2020GL089471, https://doi.org/10.1029/2020GL089471. Major gaps exist in our understanding of the pathways between internal wave generation and breaking in the Southern Ocean, with important implications for the distribution of internal wave-driven mixing, the sensitivity of ocean mixing rates and patterns to changes in the ocean environment, and the necessary ingredients of mixing parameterizations. Here we assess the dominant processes in internal wave evolution by characterizing wave and mesoscale flow scales based on full-depth in situ measurements in a Southern Ocean mixing hot spot and a ray tracing calculation. The exercise highlights the importance of Antarctic Circumpolar Current jets as a dominant influence on internal wave life cycles through advection, the modification of wave characteristics via wave-mean flow interactions, and the set-up of critical layers for both upward- and downward-propagating waves. Our findings suggest that it is important to represent mesoscale flow impacts in parameterizations of internal wave-driven mixing in the Southern Ocean. The SOFine project was funded by the UK Natural Environmental Research Council (NERC) (grant NE/G001510/1). S. Waterman is currently supported by the National Science and Engineering Research Council of Canada (NSERC) Discovery Grant Program (NSERC-2020-05799). A. Meyer acknowledges current support from the ARC Centre of Excellence for Climate Extremes (CE170100023) and previous support from the joint CSIRO-University of Tasmania Quantitative Marine Science (QMS) program. A. N. Garabato acknowledges the support of the Royal Society and the Wolfson Foundation. |
format |
Article in Journal/Newspaper |
author |
Waterman, Stephanie N. Meyer, Amelie Polzin, Kurt L. Naveira Garabato, Alberto C. Sheen, Katy L. |
author_facet |
Waterman, Stephanie N. Meyer, Amelie Polzin, Kurt L. Naveira Garabato, Alberto C. Sheen, Katy L. |
author_sort |
Waterman, Stephanie N. |
title |
Antarctic circumpolar current impacts on internal wave life cycles |
title_short |
Antarctic circumpolar current impacts on internal wave life cycles |
title_full |
Antarctic circumpolar current impacts on internal wave life cycles |
title_fullStr |
Antarctic circumpolar current impacts on internal wave life cycles |
title_full_unstemmed |
Antarctic circumpolar current impacts on internal wave life cycles |
title_sort |
antarctic circumpolar current impacts on internal wave life cycles |
publisher |
American Geophysical Union |
publishDate |
2021 |
url |
https://hdl.handle.net/1912/27825 |
long_lat |
ENVELOPE(175.417,175.417,-84.450,-84.450) |
geographic |
Antarctic Canada Southern Ocean Waterman |
geographic_facet |
Antarctic Canada Southern Ocean Waterman |
genre |
Antarc* Antarctic Southern Ocean |
genre_facet |
Antarc* Antarctic Southern Ocean |
op_source |
Waterman, S., Meyer, A., Polzin, K. L., Garabato, A. C. N., & Sheen, K. L. (2021). Antarctic circumpolar current impacts on internal wave life cycles. Geophysical Research Letters, 48(8), e2020GL089471. doi:10.1029/2020GL089471 |
op_relation |
https://doi.org/10.1029/2020GL089471 Waterman, S., Meyer, A., Polzin, K. L., Garabato, A. C. N., & Sheen, K. L. (2021). Antarctic circumpolar current impacts on internal wave life cycles. Geophysical Research Letters, 48(8), e2020GL089471. https://hdl.handle.net/1912/27825 doi:10.1029/2020GL089471 |
op_doi |
https://doi.org/10.1029/2020GL089471 |
container_title |
Geophysical Research Letters |
container_volume |
48 |
container_issue |
8 |
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1766249383578304512 |