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Ansong, J.K.; Arbic, B.K.; Simmons, H.L.; Alford, M.H.; Buijsman, M.C.; Timko, P.G.; Richman, J.G.; Shriver, J.F.; Wallcraft, A.J. | ||||
| Title | Geographical Distribution of Diurnal and Semidiurnal Parametric Subharmonic Instability in a Global Ocean Circulation Model | Type | $loc['typeJournal Article'] | ||
| Year | 2018 | Publication | Journal of Physical Oceanography | Abbreviated Journal | J. Phys. Oceanogr. |
| Volume | 48 | Issue | 6 | Pages | 1409-1431 |
| Keywords | Baroclinic flows; Internal waves; Nonlinear dynamics; Ocean dynamics; Baroclinic models; Ocean models | ||||
| Abstract | The evidence for, baroclinic energetics of, and geographic distribution of parametric subharmonic instability (PSI) arising from both diurnal and semidiurnal tides in a global ocean general circulation model is investigated using 1/12.5° and 1/25° simulations that are forced by both atmospheric analysis fields and the astronomical tidal potential. The paper examines whether PSI occurs in the model, and whether it accounts for a significant fraction of the tidal baroclinic energy loss. Using energy transfer calculations and bispectral analyses, evidence is found for PSI around the critical latitudes of the tides. The intensity of both diurnal and semidiurnal PSI in the simulations is greatest in the upper ocean, consistent with previous results from idealized simulations, and quickly drops off about 5° from the critical latitudes. The sign of energy transfer depends on location; the transfer is positive (from the tides to subharmonic waves) in some locations and negative in others. The net globally integrated energy transfer is positive in all simulations and is 0.5%�10% of the amount of energy required to close the baroclinic energy budget in the model. The net amount of energy transfer is about an order of magnitude larger in the 1/25° semidiurnal simulation than the 1/12.5° one, implying the dependence of the rate of energy transfer on model resolution. | ||||
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| ISSN | 0022-3670 | ISBN | Medium | ||
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| Funding | Approved | $loc['no'] | |||
| Call Number | COAPS @ user @ | Serial | 976 | ||
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Arbic, B.K.; Shriver, J.F.; Hogan, P.J.; Hurlburt, H.E.; McClean, J.L.; Metzger, E.J.; Scott, R.B.; Sen, A.; Smedstad, O.M.; Wallcraft, A.J. | ||||
| Title | Estimates of bottom flows and bottom boundary layer dissipation of the oceanic general circulation from global high-resolution models | Type | $loc['typeJournal Article'] | ||
| Year | 2009 | Publication | Journal of Geophysical Research | Abbreviated Journal | J. Geophys. Res. |
| Volume | 114 | Issue | C2 | Pages | |
| Keywords | energy budget; bottom drag; ocean models | ||||
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| ISSN | 0148-0227 | ISBN | Medium | ||
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| Funding | Naval Research Laboratory | Approved | $loc['no'] | ||
| Call Number | COAPS @ mfield @ | Serial | 656 | ||
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Arbic, B.K.; Wallcraft, A.J.; Metzger, E.J. | ||||
| Title | Concurrent simulation of the eddying general circulation and tides in a global ocean model | Type | $loc['typeJournal Article'] | ||
| Year | 2010 | Publication | Ocean Modelling | Abbreviated Journal | Ocean Modelling |
| Volume | 32 | Issue | 3-4 | Pages | 175-187 |
| Keywords | Eddies; Internal tides; High-resolution ocean models | ||||
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| ISSN | 1463-5003 | ISBN | Medium | ||
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| Funding | Approved | $loc['no'] | |||
| Call Number | COAPS @ mfield @ | Serial | 341 | ||
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Buijsman, M. C.; Arbic, B. K.; Richman, J. G.; Shriver, J. F.; Wallcraft, A. J.; Zamudio, L. | ||||
| Title | Semidiurnal internal tide incoherence in the equatorial Pacific | Type | $loc['typeJournal Article'] | ||
| Year | 2017 | Publication | Journal of Geophysical Research – Oceans | Abbreviated Journal | J. Geophys. Res. Oceans |
| Volume | 12 | Issue | 7 | Pages | 5286-5305 |
| Keywords | internal tide; nonstationarity; equatorial jets; numerical modeling; tides | ||||
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| Call Number | COAPS @ mfield @ | Serial | 16 | ||
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Buijsman, M.C.; Ansong, J.K.; Arbic, B.K.; Richman, J.G.; Shriver, J.F.; Timko, P.G.; Wallcraft, A.J.; Whalen, C.B.; Zhao, Z.X. | ||||
| Title | Impact of Parameterized Internal Wave Drag on the Semidiurnal Energy Balance in a Global Ocean Circulation Model | Type | $loc['typeJournal Article'] | ||
| Year | 2016 | Publication | Journal of Physical Oceanography | Abbreviated Journal | J. Phys. Oceanogr. |
| Volume | 46 | Issue | 5 | Pages | 1399-1419 |
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| ISSN | 0022-3670 | ISBN | Medium | ||
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| Call Number | COAPS @ mfield @ | Serial | 31 | ||
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Chassignet, E.; Hurlburt, H.; Metzger, E.J.; Smedstad, O.; Cummings, J.; Halliwell, G.; Bleck, R.; Baraille, R.; Wallcraft, A.; Lozano, C.; Tolman, H.; Srinivasan, A.; Hankin, S.; Cornillon, P.; Weisberg, R.; Barth, A.; He, R.; Werner, F.; Wilkin, J. | ||||
| Title | US GODAE: Global Ocean Prediction with the HYbrid Coordinate Ocean Model (HYCOM) | Type | $loc['typeJournal Article'] | ||
| Year | 2009 | Publication | Oceanography | Abbreviated Journal | Oceanog. |
| Volume | 22 | Issue | 2 | Pages | 64-75 |
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| ISSN | 1042-8275 | ISBN | Medium | ||
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| Call Number | COAPS @ mfield @ | Serial | 390 | ||
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Hurlburt, H. E.; Chassignet, E. P.; Cummings, J. A.; Kara, A. B.; Metzger, E. J.; Shriver, J. F.; Smedstad, O. M.; Wallcraft, A. J.; Barron, C. N. | ||||
| Title | Eddy-Resolving Global Ocean Prediction | Type | $loc['typeBook Chapter'] | ||
| Year | 2008 | Publication | Ocean Modeling in an Eddying Regime | Abbreviated Journal | |
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| Publisher | Ocean Modeling in an Eddying Regime | Place of Publication | Washington, DC | Editor | Hecht, M. W.; Hasumi, H. |
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| Call Number | COAPS @ mfield @ | Serial | 694 | ||
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Hurlburt, H.; Brassington, G.; Drillet, Y.; Kamachi, M.; Benkiran, M.; Bourdallé-Badie, R.; Chassignet, E.; Jacobs, G.; Galloudec, O.; Lellouche, J.-M.; Metzger, E.J.; Oke, P.; Pugh, T.; Schiller, A.; Smedstad, O.; Tranchant, B.; Tsujino, H.; Usui, N.; Wallcraft, A. | ||||
| Title | High-Resolution Global and Basin-Scale Ocean Analyses and Forecasts | Type | $loc['typeJournal Article'] | ||
| Year | 2009 | Publication | Oceanography | Abbreviated Journal | Oceanog. |
| Volume | 22 | Issue | 3 | Pages | 110-127 |
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| ISSN | 1042-8275 | ISBN | Medium | ||
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| Funding | Approved | $loc['no'] | |||
| Call Number | COAPS @ mfield @ | Serial | 675 | ||
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Jeon, C.-H.; Buijsman, M.C.; Wallcraft, A.J.; Shriver, J.F.; Arbic, B.K.; Richman, J.G.; Hogan, P.J. | ||||
| Title | Improving surface tidal accuracy through two-way nesting in a global ocean model | Type | $loc['typeJournal Article'] | ||
| Year | 2019 | Publication | Ocean Modelling | Abbreviated Journal | Ocean Modelling |
| Volume | 137 | Issue | Pages | 98-113 | |
| Keywords | Two-way nesting; HYCOM; Barotropic tides; OASIS3-MCT; FES2014; TPXO9-atlas | ||||
| Abstract | In global ocean simulations, forward (non-data-assimilative) tide models generally feature large sea-surface-height errors near Hudson Strait in the North Atlantic Ocean with respect to altimetry-constrained tidal solutions. These errors may be associated with tidal resonances that are not well resolved by the complex coastal-shelf bathymetry in low-resolution simulations. An online two-way nesting framework has been implemented to improve global surface tides in the HYbrid Coordinate Ocean Model (HYCOM). In this framework, a high-resolution child domain, covering Hudson Strait, is coupled with a relatively low-resolution parent domain for computational efficiency. Data such as barotropic pressure and velocity are exchanged between the child and parent domains with the external coupler OASIS3-MCT. The developed nesting framework is validated with semi-idealized basin-scale model simulations. The M2 sea-surface heights show very good accuracy in the one-way and two-way nesting simulations in Hudson Strait, where large tidal elevations are observed. In addition, the mass and tidal energy flux are not adversely impacted at the nesting boundaries in the semi-idealized simulations. In a next step, the nesting framework is applied to a realistic global tide simulation. In this simulation, the resolution of the child domain (1/75°) is three times as fine as that of the parent domain (1/25°). The M2 sea-surface-height root-mean-square errors with tide gauge data and the altimetry-constrained global FES2014 and TPXO9-atlas tidal solutions are evaluated for the nesting and no-nesting solutions. The better resolved coastal bathymetry and the finer grid in the child domain improve the local tides in Hudson Strait and Bay, and the back-effect of the coastal tides induces an improvement of the barotropic tides in the open ocean of the Atlantic. | ||||
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| ISSN | 1463-5003 | ISBN | Medium | ||
| Area | Expedition | Conference | |||
| Funding | Approved | $loc['no'] | |||
| Call Number | COAPS @ user @ | Serial | 1034 | ||
| Permanent link to this record | |||||
| Author |
Jeon, C.-H.; Buijsman, M.C.; Wallcraft, A.J.; Shriver, J.F.; Arbic, B.K.; Richman, J.G.; Hogan, P.J. | ||||
| Title | Improving surface tidal accuracy through two-way nesting in a global ocean model | Type | $loc['typeJournal Article'] | ||
| Year | 2019 | Publication | Ocean Modelling | Abbreviated Journal | Ocean Modelling |
| Volume | 137 | Issue | Pages | 98-113 | |
| Keywords | Two-way nesting; HYCOM; Barotropic tides; OASIS3-MCT; FES2014; TPXO9-atlas | ||||
| Abstract | In global ocean simulations, forward (non-data-assimilative) tide models generally feature large sea-surface-height errors near Hudson Strait in the North Atlantic Ocean with respect to altimetry-constrained tidal solutions. These errors may be associated with tidal resonances that are not well resolved by the complex coastal-shelf bathymetry in low-resolution simulations. An online two-way nesting framework has been implemented to improve global surface tides in the HYbrid Coordinate Ocean Model (HYCOM). In this framework, a high-resolution child domain, covering Hudson Strait, is coupled with a relatively low-resolution parent domain for computational efficiency. Data such as barotropic pressure and velocity are exchanged between the child and parent domains with the external coupler OASIS3-MCT. The developed nesting framework is validated with semi-idealized basin-scale model simulations. The M2 sea-surface heights show very good accuracy in the one-way and two-way nesting simulations in Hudson Strait, where large tidal elevations are observed. In addition, the mass and tidal energy flux are not adversely impacted at the nesting boundaries in the semi-idealized simulations. In a next step, the nesting framework is applied to a realistic global tide simulation. In this simulation, the resolution of the child domain (1/75°) is three times as fine as that of the parent domain (1/25°). The M2 sea-surface-height root-mean-square errors with tide gauge data and the altimetry-constrained global FES2014 and TPXO9-atlas tidal solutions are evaluated for the nesting and no-nesting solutions. The better resolved coastal bathymetry and the finer grid in the child domain improve the local tides in Hudson Strait and Bay, and the back-effect of the coastal tides induces an improvement of the barotropic tides in the open ocean of the Atlantic. | ||||
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| Funding | Approved | $loc['no'] | |||
| Call Number | COAPS @ user @ | Serial | 1036 | ||
| Permanent link to this record | |||||
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