Records |
Author |
Timko, P.G.; Arbic, B.K.; Hyder, P.; Richman, J.G.; Zamudio, L.; O'Dea, E.; Wallcraft, A.J.; Shriver, J.F. |
Title |
Assessment of shelf sea tides and tidal mixing fronts in a global ocean model |
Type |
$loc['typeJournal Article'] |
Year |
2019 |
Publication |
Ocean Modelling |
Abbreviated Journal |
Ocean Modelling |
Volume |
136 |
Issue |
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Pages |
66-84 |
Keywords |
HYCOM; tides; seasonal tidal mixing |
Abstract |
Tidal mixing fronts, which represent boundaries between stratified and tidally mixed waters, are locations of enhanced biological activity. They occur in summer shelf seas when, in the presence of strong tidal currents, mixing due to bottom friction balances buoyancy production due to seasonal heat flux. In this paper we examine the occurrence and fidelity of tidal mixing fronts in shelf seas generated within a global 3-dimensional simulation of the HYbrid Coordinate Ocean Model (HYCOM) that is simultaneously forced by atmospheric fields and the astronomical tidal potential. We perform a first order assessment of shelf sea tides in global HYCOM through comparison of sea surface temperature, sea surface tidal elevations, and tidal currents with observations. HYCOM was tuned to minimize errors in M2 sea surface heights in deep water. Over the global coastal and shelf seas (depths <200 m) the area-weighted root mean square error of the M2 sea surface amplitude in HYCOM represents 35% of the 50 cm root mean squared M2 sea surface amplitude when compared to satellite constrained models TPXO8 and FES2014. HYCOM and the altimeter constrained tidal models TPXO8 and FES2014 exhibit similar skill in reproducing barotropic tidal currents estimated from in-situ current meter observations. Through comparison of a global HYCOM simulation with tidal forcing to a global HYCOM simulation with no tides, and also to previous regional studies of tidal mixing fronts in shelf seas, we demonstrate that HYCOM with embedded tides exhibits quite high skill in reproducing known tidal mixing fronts in shelf seas. Our results indicate that the amount of variability in the location of the tidal mixing fronts in HYCOM, estimated using the Simpson-Hunter parameter, is consistent with previous studies when the differences in the net downward heat flux, on a global scale, are taken into account. We also provide evidence of tidal mixing fronts on the North West Australian Shelf for which we have been unable to find references in the existing scientific literature. |
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1463-5003 |
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$loc['no'] |
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COAPS @ user @ |
Serial |
1032 |
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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 |
$loc['typeJournal Article'] |
Year |
2012 |
Publication |
Journal of Geophysical Research: Oceans |
Abbreviated Journal |
J. Geophys. Res. |
Volume |
117 |
Issue |
C8 |
Pages |
n/a-n/a |
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0148-0227 |
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$loc['no'] |
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COAPS @ mfield @ |
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242 |
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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 testing a three-dimensional global tide model to historical current meter records |
Type |
$loc['typeJournal Article'] |
Year |
2013 |
Publication |
Journal of Geophysical Research: Oceans |
Abbreviated Journal |
J. Geophys. Res. Oceans |
Volume |
118 |
Issue |
12 |
Pages |
6914-6933 |
Keywords |
global tides; skill test; HYCOM; tidal currents |
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2169-9275 |
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COAPS @ mfield @ |
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177 |
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Trossman, D.S.; Arbic, B.K.; Straub, D.N.; Richman, J.G.; Chassignet, E.P.; Wallcraft, A.J.; Xu, X. |
Title |
The Role of Rough Topography in Mediating Impacts of Bottom Drag in Eddying Ocean Circulation Models |
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$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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COAPS @ mfield @ |
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230 |
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Wallcraft, A.J.; Kara, A.B.; Barron, C.N.; Metzger, E.J.; Pauley, R.L.; Bourassa, M.A. |
Title |
Comparisons of monthly mean 10 m wind speeds from satellites and NWP products over the global ocean |
Type |
$loc['typeJournal Article'] |
Year |
2009 |
Publication |
Journal of Geophysical Research |
Abbreviated Journal |
J. Geophys. Res. |
Volume |
114 |
Issue |
D16 |
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0148-0227 |
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OVWST, NASA, NOAA, COD |
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$loc['no'] |
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COAPS @ mfield @ |
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387 |
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Wallcraft, A.J.; Kara, A.B.; Hurlburt, H.E.; Chassignet, E.P.; Halliwell, G.H. |
Title |
Value of bulk heat flux parameterizations for ocean SST prediction |
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$loc['typeJournal Article'] |
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2008 |
Publication |
Journal of Marine Systems |
Abbreviated Journal |
Journal of Marine Systems |
Volume |
74 |
Issue |
1-2 |
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241-258 |
Keywords |
Bulk heat fluxes; Ocean model SST; Exchange coefficients; Atmospheric forcing; Climate |
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0924-7963 |
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$loc['no'] |
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COAPS @ mfield @ |
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405 |
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