Records |
Author |
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 |
$loc['typeJournal Article'] |
Year |
2018 |
Publication |
Journal of Physical Oceanography |
Abbreviated Journal |
J. Phys. Oceanogr. |
Volume |
48 |
Issue |
6 |
Pages |
1409-1431 |
Keywords |
Baroclinic flows; Internal waves; Nonlinear dynamics; Ocean dynamics; Baroclinic models; Ocean models |
Abstract |
The evidence for, baroclinic energetics of, and geographic distribution of parametric subharmonic instability (PSI) arising from both diurnal and semidiurnal tides in a global ocean general circulation model is investigated using 1/12.5° and 1/25° simulations that are forced by both atmospheric analysis fields and the astronomical tidal potential. The paper examines whether PSI occurs in the model, and whether it accounts for a significant fraction of the tidal baroclinic energy loss. Using energy transfer calculations and bispectral analyses, evidence is found for PSI around the critical latitudes of the tides. The intensity of both diurnal and semidiurnal PSI in the simulations is greatest in the upper ocean, consistent with previous results from idealized simulations, and quickly drops off about 5° from the critical latitudes. The sign of energy transfer depends on location; the transfer is positive (from the tides to subharmonic waves) in some locations and negative in others. The net globally integrated energy transfer is positive in all simulations and is 0.5%�10% of the amount of energy required to close the baroclinic energy budget in the model. The net amount of energy transfer is about an order of magnitude larger in the 1/25° semidiurnal simulation than the 1/12.5° one, implying the dependence of the rate of energy transfer on model resolution. |
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0022-3670 |
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$loc['no'] |
Call Number |
COAPS @ user @ |
Serial |
976 |
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Author |
Trossman, D.S.; Arbic, B.K.; Straub, D.N.; Richman, J.G.; Chassignet, E.P.; Wallcraft, A.J.; Xu, X. |
Title |
The Role of Rough Topography in Mediating Impacts of Bottom Drag in Eddying Ocean Circulation Models |
Type |
$loc['typeJournal Article'] |
Year |
2017 |
Publication |
Journal of Physical Oceanography |
Abbreviated Journal |
J. Phys. Oceanogr. |
Volume |
47 |
Issue |
8 |
Pages |
1941-1959 |
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0022-3670 |
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$loc['no'] |
Call Number |
COAPS @ mfield @ |
Serial |
230 |
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Author |
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 |
$loc['typeJournal Article'] |
Year |
2016 |
Publication |
Journal of Physical Oceanography |
Abbreviated Journal |
J. Phys. Oceanogr. |
Volume |
46 |
Issue |
5 |
Pages |
1399-1419 |
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0022-3670 |
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$loc['no'] |
Call Number |
COAPS @ mfield @ |
Serial |
31 |
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Author |
MacKinnon, J.A.; Alford, M.H.; Ansong, J.K.; Arbic, B.K.; Barna, A.; Briegleb, B.P.; Bryan, F.O.; Buijsman, M.C.; Chassignet, E.P.; Danabasoglu, G.; Diggs, S.; Griffies, S.M.; Hallberg, R.W.; Jayne, S.R.; Jochum, M.; Klymak, J.M.; Kunze, E.; Large, W.G.; Legg, S.; Mater, B.; Melet, A.V.; Merchant, L.M.; Musgrave, R.; Nash, J.D.; Norton, N.J.; Pickering, A.; Pinkel, R.; Polzin, K.; Simmons, H.L.; St. Laurent, L.C.; Sun, O.M.; Trossman, D.S.; Waterhouse, A.F.; Whalen, C.B.; Zhao, Z. |
Title |
Climate Process Team on Internal-Wave Driven Ocean Mixing |
Type |
$loc['typeJournal Article'] |
Year |
2017 |
Publication |
Bulletin of the American Meteorological Society |
Abbreviated Journal |
Bull. Amer. Meteor. Soc. |
Volume |
98 |
Issue |
11 |
Pages |
2429-2454 |
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0003-0007 |
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$loc['no'] |
Call Number |
COAPS @ mfield @ |
Serial |
66 |
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Author |
Timko, P.G.; Arbic, B.K.; Richman, J.G.; Scott, R.B.; Metzger, E.J.; Wallcraft, A.J. |
Title |
Skill tests of three-dimensional tidal currents in a global ocean model: A look at the North Atlantic |
Type |
$loc['typeJournal Article'] |
Year |
2012 |
Publication |
Journal of Geophysical Research: Oceans |
Abbreviated Journal |
J. Geophys. Res. |
Volume |
117 |
Issue |
C8 |
Pages |
n/a-n/a |
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ISSN |
0148-0227 |
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$loc['no'] |
Call Number |
COAPS @ mfield @ |
Serial |
242 |
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Author |
Müller, M.; Arbic, B.K.; Mitrovica, J.X. |
Title |
Secular trends in ocean tides: Observations and model results |
Type |
$loc['typeJournal Article'] |
Year |
2011 |
Publication |
Journal of Geophysical Research |
Abbreviated Journal |
J. Geophys. Res. |
Volume |
116 |
Issue |
C5 |
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ISSN |
0148-0227 |
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$loc['no'] |
Call Number |
COAPS @ mfield @ |
Serial |
306 |
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Author |
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 |
$loc['typeJournal Article'] |
Year |
2009 |
Publication |
Journal of Geophysical Research |
Abbreviated Journal |
J. Geophys. Res. |
Volume |
114 |
Issue |
C2 |
Pages |
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Keywords |
energy budget; bottom drag; ocean models |
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0148-0227 |
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Funding |
Naval Research Laboratory |
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$loc['no'] |
Call Number |
COAPS @ mfield @ |
Serial |
656 |
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Author |
Luecke, C.A.; Arbic, B.K.; Bassette, S.L.; Richman, J.G.; Shriver, J.F.; Alford, M.H.; Smedstad, O.M.; Timko, P.G.; Trossman, D.S.; Wallcraft, A.J. |
Title |
The Global Mesoscale Eddy Available Potential Energy Field in Models and Observations |
Type |
$loc['typeJournal Article'] |
Year |
2017 |
Publication |
Journal of Geophysical Research: Oceans |
Abbreviated Journal |
J. Geophys. Res. Oceans |
Volume |
122 |
Issue |
11 |
Pages |
9126-9143 |
Keywords |
eddy available potential energy; mesoscale eddies; mixing; model-data comparison; ocean energy reservoirs; Argo |
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ISSN |
2169-9275 |
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$loc['no'] |
Call Number |
COAPS @ mfield @ |
Serial |
464 |
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Author |
Luecke, C.A.; Arbic, B.K.; Bassette, S.L.; Richman, J.G.; Shriver, J.F.; Alford, M.H.; Smedstad, O.M.; Timko, P.G.; Trossman, D.S.; Wallcraft, A.J. |
Title |
The Global Mesoscale Eddy Available Potential Energy Field in Models and Observations: GLOBAL LOW-FREQUENCY EDDY APE |
Type |
$loc['typeJournal Article'] |
Year |
2017 |
Publication |
Journal of Geophysical Research: Oceans |
Abbreviated Journal |
J. Geophys. Res. Oceans |
Volume |
122 |
Issue |
11 |
Pages |
9126-9143 |
Keywords |
eddy available potential energy; mesoscale eddies; mixing; model‐ data comparison; ocean energy reservoirs; Argo |
Abstract |
Global maps of the mesoscale eddy available potential energy (EAPE) field at a depth of 500 m are created using potential density anomalies in a high‐resolution 1/12.5° global ocean model. Maps made from both a free‐running simulation and a data‐assimilative reanalysis of the HYbrid Coordinate Ocean Model (HYCOM) are compared with maps made by other researchers from density anomalies in Argo profiles. The HYCOM and Argo maps display similar features, especially in the dominance of western boundary currents. The reanalysis maps match the Argo maps more closely, demonstrating the added value of data assimilation. Global averages of the simulation, reanalysis, and Argo EAPE all agree to within about 10%. The model and Argo EAPE fields are compared to EAPE computed from temperature anomalies in a data set of “moored historical observations” (MHO) in conjunction with buoyancy frequencies computed from a global climatology. The MHO data set allows for an estimate of the EAPE in high‐frequency motions that is aliased into the Argo EAPE values. At MHO locations, 15–32% of the EAPE in the Argo estimates is due to aliased motions having periods of 10 days or less. Spatial averages of EAPE in HYCOM, Argo, and MHO data agree to within 50% at MHO locations, with both model estimates lying within error bars observations. Analysis of the EAPE field in an idealized model, in conjunction with published theory, suggests that much of the scatter seen in comparisons of different EAPE estimates is to be expected given the chaotic, unpredictable nature of mesoscale eddies. |
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2169-9275 |
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$loc['no'] |
Call Number |
COAPS @ rl18 @ |
Serial |
992 |
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Author |
Savage, A.C.; Arbic, B.K.; Alford, M.H.; Ansong, J.K.; Farrar, J.T.; Menemenlis, D.; O'Rourke, A.K.; Richman, J.G.; Shriver, J.F.; Voet, G.; Wallcraft, A.J.; Zamudio, L. |
Title |
Spectral decomposition of internal gravity wave sea surface height in global models |
Type |
$loc['typeJournal Article'] |
Year |
2017 |
Publication |
Journal of Geophysical Research: Oceans |
Abbreviated Journal |
J. Geophys. Res. Oceans |
Volume |
122 |
Issue |
10 |
Pages |
7803-7821 |
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2169-9275 |
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$loc['no'] |
Call Number |
COAPS @ mfield @ |
Serial |
372 |
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