Internal‐Wave Dissipation Mechanisms and Vertical Structure in a High‐Resolution Regional Ocean Model
Abstract Motivated by the importance of mixing arising from dissipating internal waves (IWs), vertical profiles of internal‐wave dissipation from a high‐resolution regional ocean model are compared with finestructure estimates made from observations. A horizontal viscosity scheme restricted to only...
Saved in:
| Main Authors: | , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2024-09-01
|
| Series: | Geophysical Research Letters |
| Subjects: | |
| Online Access: | https://doi.org/10.1029/2023GL108039 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1850207005388570624 |
|---|---|
| author | Joseph Skitka Brian K. Arbic Yuchen Ma Kayhan Momeni Yulin Pan William R. Peltier Dimitris Menemenlis Ritabrata Thakur |
| author_facet | Joseph Skitka Brian K. Arbic Yuchen Ma Kayhan Momeni Yulin Pan William R. Peltier Dimitris Menemenlis Ritabrata Thakur |
| author_sort | Joseph Skitka |
| collection | DOAJ |
| description | Abstract Motivated by the importance of mixing arising from dissipating internal waves (IWs), vertical profiles of internal‐wave dissipation from a high‐resolution regional ocean model are compared with finestructure estimates made from observations. A horizontal viscosity scheme restricted to only act on horizontally rotational modes (such as eddies) is introduced and tested. At lower resolutions with horizontal grid spacings of 2 km, the modeled IW dissipation from numerical model agrees reasonably well with observations in some cases when the restricted form of horizontal viscosity is used. This suggests the possibility that if restricted forms of horizontal viscosity are adopted by global models with similar resolutions, they could be used to diagnose and map IW dissipation distributions. At higher resolutions with horizontal grid spacings of ∼250 m, the dissipation from vertical shear and horizontal viscosity act much more strongly resulting in dissipation overestimates; however, the vertical‐shear dissipation itself is found to agree well with observations. |
| format | Article |
| id | doaj-art-31cbefe5f3144da49de9f07c22a5a3c8 |
| institution | OA Journals |
| issn | 0094-8276 1944-8007 |
| language | English |
| publishDate | 2024-09-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geophysical Research Letters |
| spelling | doaj-art-31cbefe5f3144da49de9f07c22a5a3c82025-08-20T02:10:39ZengWileyGeophysical Research Letters0094-82761944-80072024-09-015117n/an/a10.1029/2023GL108039Internal‐Wave Dissipation Mechanisms and Vertical Structure in a High‐Resolution Regional Ocean ModelJoseph Skitka0Brian K. Arbic1Yuchen Ma2Kayhan Momeni3Yulin Pan4William R. Peltier5Dimitris Menemenlis6Ritabrata Thakur7Department of Earth and Environmental Sciences University of Michigan Ann Arbor MI USADepartment of Earth and Environmental Sciences University of Michigan Ann Arbor MI USADepartment of Physics University of Toronto Toronto ON CanadaDepartment of Physics University of Toronto Toronto ON CanadaDepartment of Naval Architecture and Marine Engineering University of Michigan Ann Arbor MI USADepartment of Physics University of Toronto Toronto ON CanadaJet Propulsion Laboratory California Institute of Technology Pasadena CA USADepartment of Earth and Environmental Sciences University of Michigan Ann Arbor MI USAAbstract Motivated by the importance of mixing arising from dissipating internal waves (IWs), vertical profiles of internal‐wave dissipation from a high‐resolution regional ocean model are compared with finestructure estimates made from observations. A horizontal viscosity scheme restricted to only act on horizontally rotational modes (such as eddies) is introduced and tested. At lower resolutions with horizontal grid spacings of 2 km, the modeled IW dissipation from numerical model agrees reasonably well with observations in some cases when the restricted form of horizontal viscosity is used. This suggests the possibility that if restricted forms of horizontal viscosity are adopted by global models with similar resolutions, they could be used to diagnose and map IW dissipation distributions. At higher resolutions with horizontal grid spacings of ∼250 m, the dissipation from vertical shear and horizontal viscosity act much more strongly resulting in dissipation overestimates; however, the vertical‐shear dissipation itself is found to agree well with observations.https://doi.org/10.1029/2023GL108039internal wavesregional ocean modelsdissipation |
| spellingShingle | Joseph Skitka Brian K. Arbic Yuchen Ma Kayhan Momeni Yulin Pan William R. Peltier Dimitris Menemenlis Ritabrata Thakur Internal‐Wave Dissipation Mechanisms and Vertical Structure in a High‐Resolution Regional Ocean Model Geophysical Research Letters internal waves regional ocean models dissipation |
| title | Internal‐Wave Dissipation Mechanisms and Vertical Structure in a High‐Resolution Regional Ocean Model |
| title_full | Internal‐Wave Dissipation Mechanisms and Vertical Structure in a High‐Resolution Regional Ocean Model |
| title_fullStr | Internal‐Wave Dissipation Mechanisms and Vertical Structure in a High‐Resolution Regional Ocean Model |
| title_full_unstemmed | Internal‐Wave Dissipation Mechanisms and Vertical Structure in a High‐Resolution Regional Ocean Model |
| title_short | Internal‐Wave Dissipation Mechanisms and Vertical Structure in a High‐Resolution Regional Ocean Model |
| title_sort | internal wave dissipation mechanisms and vertical structure in a high resolution regional ocean model |
| topic | internal waves regional ocean models dissipation |
| url | https://doi.org/10.1029/2023GL108039 |
| work_keys_str_mv | AT josephskitka internalwavedissipationmechanismsandverticalstructureinahighresolutionregionaloceanmodel AT briankarbic internalwavedissipationmechanismsandverticalstructureinahighresolutionregionaloceanmodel AT yuchenma internalwavedissipationmechanismsandverticalstructureinahighresolutionregionaloceanmodel AT kayhanmomeni internalwavedissipationmechanismsandverticalstructureinahighresolutionregionaloceanmodel AT yulinpan internalwavedissipationmechanismsandverticalstructureinahighresolutionregionaloceanmodel AT williamrpeltier internalwavedissipationmechanismsandverticalstructureinahighresolutionregionaloceanmodel AT dimitrismenemenlis internalwavedissipationmechanismsandverticalstructureinahighresolutionregionaloceanmodel AT ritabratathakur internalwavedissipationmechanismsandverticalstructureinahighresolutionregionaloceanmodel |