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Author Jeon, C.-H.; Buijsman, M.C.; Wallcraft, A.J.; Shriver, J.F.; Arbic, B.K.; Richman, J.G.; Hogan, P.J. url  openurl
  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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  Call Number COAPS @ user @ Serial 1036  
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Author Jia, Y.; Calil, P.H.R.; Chassignet, E.P.; Metzger, E.J.; Potemra, J.T.; Richards, K.J.; Wallcraft, A.J. url  doi
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  Title Generation of mesoscale eddies in the lee of the Hawaiian Islands Type $loc['typeJournal Article']
  Year 2011 Publication Journal of Geophysical Research Abbreviated Journal J. Geophys. Res.  
  Volume 116 Issue C11 Pages  
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  Series Volume Series Issue Edition  
  ISSN 0148-0227 ISBN Medium  
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  Call Number COAPS @ mfield @ Serial 328  
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Author Kara, A.B.; Hurlburt, H.E.; Wallcraft, A.J.; Bourassa, M.A. url  doi
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  Title Black Sea Mixed Layer Sensitivity to Various Wind and Thermal Forcing Products on Climatological Time Scales Type $loc['typeJournal Article']
  Year 2005 Publication Journal of Climate Abbreviated Journal J. Climate  
  Volume 18 Issue 24 Pages 5266-5293  
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  ISSN 0894-8755 ISBN Medium  
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  Funding DOD, NRL Approved $loc['no']  
  Call Number COAPS @ mfield @ Serial 446  
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Author Kara, A.B.; Metzger, E.J.; Hurlburt, H.E.; Wallcraft, A.J.; Chassignet, E.P. url  doi
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  Title Multistatistics metric evaluation of ocean general circulation model sea surface temperature: Application to 0.08° Pacific Hybrid Coordinate Ocean Model simulations Type $loc['typeJournal Article']
  Year 2008 Publication Journal of Geophysical Research Abbreviated Journal J. Geophys. Res.  
  Volume 113 Issue C12 Pages  
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  ISSN 0148-0227 ISBN Medium  
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  Call Number COAPS @ mfield @ Serial 403  
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Author Kara, A.B.; Wallcraft, A.J.; Barron, C.N.; Hurlburt, H.E.; Bourassa, M.A. url  doi
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  Title Accuracy of 10 m winds from satellites and NWP products near land-sea boundaries Type $loc['typeJournal Article']
  Year 2008 Publication Journal of Geophysical Research Abbreviated Journal J. Geophys. Res.  
  Volume 113 Issue C10 Pages  
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  ISSN 0148-0227 ISBN Medium  
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  Funding NOAA, NRL Approved $loc['no']  
  Call Number COAPS @ mfield @ Serial 406  
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Author Kara, A.B.; Wallcraft, A.J.; Bourassa, M.A. url  doi
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  Title Air-sea stability effects on the 10 m winds over the global ocean: Evaluations of air-sea flux algorithms Type $loc['typeJournal Article']
  Year 2008 Publication Journal of Geophysical Research Abbreviated Journal J. Geophys. Res.  
  Volume 113 Issue C4 Pages  
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  ISSN 0148-0227 ISBN Medium  
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  Call Number COAPS @ mfield @ Serial 412  
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Author Kara, A.B.; Wallcraft, A.J.; Martin, P.J.; Chassignet, E.P. url  doi
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  Title Performance of mixed layer models in simulating SST in the equatorial Pacific Ocean Type $loc['typeJournal Article']
  Year 2008 Publication Journal of Geophysical Research Abbreviated Journal J. Geophys. Res.  
  Volume 113 Issue C2 Pages  
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  ISSN 0148-0227 ISBN Medium  
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  Call Number COAPS @ mfield @ Serial 415  
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Author Le Sommer, Julien; Chassignet, E.P.; Wallcraft, A. J. url  openurl
  Title Ocean Circulation Modeling for Operational Oceanography: Current Status and Future Challenges Type $loc['typeBook Chapter']
  Year 2018 Publication New Frontiers in Operational Oceanography Abbreviated Journal  
  Volume Issue Pages 289-305  
  Keywords OCEAN MODELING; OCEAN CIRCULATION; PARAMETERIZATIONS  
  Abstract This chapter focuses on ocean circulation models used in operational oceanography, physical oceanography and climate science. Ocean circulation models area particular branch of ocean numerical modeling that focuses on the representation of ocean physical properties over spatial scales ranging from the global scale to less than a kilometer and time scales ranging from hours to decades. As such, they are an essential build-ing block for operational oceanography systems and their design receives a lot of attention from operational and research centers.  
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  Publisher GODAE OceanView Place of Publication Tallahassee, FL Editor Chassignet, E. P., A. Pascual, J. Tintoré, and J. Verron  
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  Call Number COAPS @ user @ Serial 948  
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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. url  doi
openurl 
  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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  Series Volume Series Issue Edition  
  ISSN 2169-9275 ISBN Medium  
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  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. url  doi
openurl 
  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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  ISSN 2169-9275 ISBN Medium  
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  Call Number COAPS @ rl18 @ Serial 992  
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