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The Latitudinal Dependence of Shear and Mixing in the Pacific Transiting the Critical Latitude for PSI
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| Zeitschriftentitel: | Journal of Physical Oceanography |
|---|---|
| Personen und Körperschaften: | , , , , |
| In: | Journal of Physical Oceanography, 43, 2013, 1, S. 3-16 |
| Format: | E-Article |
| Sprache: | Englisch |
| veröffentlicht: |
American Meteorological Society
|
| Schlagwörter: |
| author_facet |
MacKinnon, J. A. Alford, M. H. Pinkel, Rob Klymak, Jody Zhao, Zhongxiang MacKinnon, J. A. Alford, M. H. Pinkel, Rob Klymak, Jody Zhao, Zhongxiang |
|---|---|
| author |
MacKinnon, J. A. Alford, M. H. Pinkel, Rob Klymak, Jody Zhao, Zhongxiang |
| spellingShingle |
MacKinnon, J. A. Alford, M. H. Pinkel, Rob Klymak, Jody Zhao, Zhongxiang Journal of Physical Oceanography The Latitudinal Dependence of Shear and Mixing in the Pacific Transiting the Critical Latitude for PSI Oceanography |
| author_sort |
mackinnon, j. a. |
| spelling |
MacKinnon, J. A. Alford, M. H. Pinkel, Rob Klymak, Jody Zhao, Zhongxiang 0022-3670 1520-0485 American Meteorological Society Oceanography http://dx.doi.org/10.1175/jpo-d-11-0107.1 <jats:title>Abstract</jats:title><jats:p>Turbulent mixing rates are inferred from measurements spanning 25°–37°N in the Pacific Ocean. The observations were made as part of the Internal Waves Across the Pacific experiment, designed to investigate the long-range fate of the low-mode internal tide propagating north from Hawaii. Previous and companion results argue that, near a critical latitude of 29°N, the internal tide loses energy to high-mode near-inertial motions through parametric subharmonic instability. Here, the authors estimate mixing from several variations of the finescale shear–strain parameterization, as well as Thorpe-scale analysis of overturns. Though all estimated diffusivities are modest in magnitude, average diffusivity in the top kilometer shows a factor of 2–4 elevation near and equatorward of 29°N. However, given intrinsic uncertainty and the strong temporal variability of diffusivity observed in long mooring records, the meridional mixing pattern is found to be near the edge of statistical significance.</jats:p> The Latitudinal Dependence of Shear and Mixing in the Pacific Transiting the Critical Latitude for PSI Journal of Physical Oceanography |
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American Meteorological Society, 2013 |
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| title |
The Latitudinal Dependence of Shear and Mixing in the Pacific Transiting the Critical Latitude for PSI |
| title_unstemmed |
The Latitudinal Dependence of Shear and Mixing in the Pacific Transiting the Critical Latitude for PSI |
| title_full |
The Latitudinal Dependence of Shear and Mixing in the Pacific Transiting the Critical Latitude for PSI |
| title_fullStr |
The Latitudinal Dependence of Shear and Mixing in the Pacific Transiting the Critical Latitude for PSI |
| title_full_unstemmed |
The Latitudinal Dependence of Shear and Mixing in the Pacific Transiting the Critical Latitude for PSI |
| title_short |
The Latitudinal Dependence of Shear and Mixing in the Pacific Transiting the Critical Latitude for PSI |
| title_sort |
the latitudinal dependence of shear and mixing in the pacific transiting the critical latitude for psi |
| topic |
Oceanography |
| url |
http://dx.doi.org/10.1175/jpo-d-11-0107.1 |
| publishDate |
2013 |
| physical |
3-16 |
| description |
<jats:title>Abstract</jats:title><jats:p>Turbulent mixing rates are inferred from measurements spanning 25°–37°N in the Pacific Ocean. The observations were made as part of the Internal Waves Across the Pacific experiment, designed to investigate the long-range fate of the low-mode internal tide propagating north from Hawaii. Previous and companion results argue that, near a critical latitude of 29°N, the internal tide loses energy to high-mode near-inertial motions through parametric subharmonic instability. Here, the authors estimate mixing from several variations of the finescale shear–strain parameterization, as well as Thorpe-scale analysis of overturns. Though all estimated diffusivities are modest in magnitude, average diffusivity in the top kilometer shows a factor of 2–4 elevation near and equatorward of 29°N. However, given intrinsic uncertainty and the strong temporal variability of diffusivity observed in long mooring records, the meridional mixing pattern is found to be near the edge of statistical significance.</jats:p> |
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| author | MacKinnon, J. A., Alford, M. H., Pinkel, Rob, Klymak, Jody, Zhao, Zhongxiang |
| author_facet | MacKinnon, J. A., Alford, M. H., Pinkel, Rob, Klymak, Jody, Zhao, Zhongxiang, MacKinnon, J. A., Alford, M. H., Pinkel, Rob, Klymak, Jody, Zhao, Zhongxiang |
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| description | <jats:title>Abstract</jats:title><jats:p>Turbulent mixing rates are inferred from measurements spanning 25°–37°N in the Pacific Ocean. The observations were made as part of the Internal Waves Across the Pacific experiment, designed to investigate the long-range fate of the low-mode internal tide propagating north from Hawaii. Previous and companion results argue that, near a critical latitude of 29°N, the internal tide loses energy to high-mode near-inertial motions through parametric subharmonic instability. Here, the authors estimate mixing from several variations of the finescale shear–strain parameterization, as well as Thorpe-scale analysis of overturns. Though all estimated diffusivities are modest in magnitude, average diffusivity in the top kilometer shows a factor of 2–4 elevation near and equatorward of 29°N. However, given intrinsic uncertainty and the strong temporal variability of diffusivity observed in long mooring records, the meridional mixing pattern is found to be near the edge of statistical significance.</jats:p> |
| doi_str_mv | 10.1175/jpo-d-11-0107.1 |
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| physical | 3-16 |
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| spelling | MacKinnon, J. A. Alford, M. H. Pinkel, Rob Klymak, Jody Zhao, Zhongxiang 0022-3670 1520-0485 American Meteorological Society Oceanography http://dx.doi.org/10.1175/jpo-d-11-0107.1 <jats:title>Abstract</jats:title><jats:p>Turbulent mixing rates are inferred from measurements spanning 25°–37°N in the Pacific Ocean. The observations were made as part of the Internal Waves Across the Pacific experiment, designed to investigate the long-range fate of the low-mode internal tide propagating north from Hawaii. Previous and companion results argue that, near a critical latitude of 29°N, the internal tide loses energy to high-mode near-inertial motions through parametric subharmonic instability. Here, the authors estimate mixing from several variations of the finescale shear–strain parameterization, as well as Thorpe-scale analysis of overturns. Though all estimated diffusivities are modest in magnitude, average diffusivity in the top kilometer shows a factor of 2–4 elevation near and equatorward of 29°N. However, given intrinsic uncertainty and the strong temporal variability of diffusivity observed in long mooring records, the meridional mixing pattern is found to be near the edge of statistical significance.</jats:p> The Latitudinal Dependence of Shear and Mixing in the Pacific Transiting the Critical Latitude for PSI Journal of Physical Oceanography |
| spellingShingle | MacKinnon, J. A., Alford, M. H., Pinkel, Rob, Klymak, Jody, Zhao, Zhongxiang, Journal of Physical Oceanography, The Latitudinal Dependence of Shear and Mixing in the Pacific Transiting the Critical Latitude for PSI, Oceanography |
| title | The Latitudinal Dependence of Shear and Mixing in the Pacific Transiting the Critical Latitude for PSI |
| title_full | The Latitudinal Dependence of Shear and Mixing in the Pacific Transiting the Critical Latitude for PSI |
| title_fullStr | The Latitudinal Dependence of Shear and Mixing in the Pacific Transiting the Critical Latitude for PSI |
| title_full_unstemmed | The Latitudinal Dependence of Shear and Mixing in the Pacific Transiting the Critical Latitude for PSI |
| title_short | The Latitudinal Dependence of Shear and Mixing in the Pacific Transiting the Critical Latitude for PSI |
| title_sort | the latitudinal dependence of shear and mixing in the pacific transiting the critical latitude for psi |
| title_unstemmed | The Latitudinal Dependence of Shear and Mixing in the Pacific Transiting the Critical Latitude for PSI |
| topic | Oceanography |
| url | http://dx.doi.org/10.1175/jpo-d-11-0107.1 |