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Including Non-Boussinesq Effects in Boussinesq Ocean Circulation Models
Publisher: American Meteorological Society
Abstract: A set of equations is derived to modify z-level Boussinesq ocean circulation models to account for non-Boussinesq effects. These equations take the same form as those of the Boussinesq models except for the addition of a ...
Vorticity Balance in Coarse-Resolution Global Ocean Simulations
Publisher: American Meteorological Society
Abstract: The vorticity budget of the vertically integrated circulation from two global ocean simulations is analyzed using a horizontal spacing of 2° ? 2° in longitude/latitude. The two simulations differ in their initial hydrographic ...
Using a Broadband ADCP in a Tidal Channel. Part I: Mean Flow and Shear
Publisher: American Meteorological Society
Abstract: This paper discusses the principles of measuring the mean velocity and its vertical shear in a turbulent flow using an acoustic Doppler current profiler (ADCP), and presents an analysis of data gathered in a tidal channel. ...
Using a Broadband ADCP in a Tidal Channel. Part II: Turbulence
Publisher: American Meteorological Society
Abstract: A four-transducer, 600-kHz, broadband acoustic Dopple current profiler (ADCP) was rigidly mounted to the bottom of a fully turbulent tidal channel with peak flows of 1 m s?1. Rapid samples of velocity data are used to ...
Sea Level Variations in the Tropical Pacific Ocean and the Madden–Julian Oscillation
Publisher: American Meteorological Society
Abstract: Satellite observations of sea level and surface wind from the tropical Pacific Ocean, and their relationship to the Madden?Julian oscillation (MJO), are analyzed using a combination of statistical techniques and a simple, ...
Internal Tide Generation over Topography: Experiments with a Free-Surface z-Level Ocean Model
Publisher: American Meteorological Society
Abstract: A three-dimensional, z-level, primitive-equation ocean circulation model (DieCAST) is modified to include a free-surface and partial cells. The updating of free-surface elevation is implicit in time so that the extra ...
Relaxing the Boussinesq Approximation in Ocean Circulation Models
Publisher: American Meteorological Society
Abstract: There is a growing need for ocean circulation models that conserve mass rather than volume (as in traditional Boussinesq models). One reason is bottom pressure data expected to flow from satellite-mounted gravity-measuring ...
Turbulence Characteristics in a Tidal Channel
Publisher: American Meteorological Society
Abstract: A broadband ADCP and a moored microstructure instrument (TAMI) were deployed in a tidal channel of 30-m depth and with peak speeds of 1 m s?1. The measurements enable us to derive profiles of stress, turbulent kinetic ...
Mapping the Relationship between Northern Hemisphere Winter Surface Air Temperature and the Madden–Julian Oscillation
Publisher: American Meteorological Society
Abstract: regression-based modeling approach is described for mapping the dependence of atmospheric state variables such as surface air temperature (SAT) on the Madden?Julian oscillation (MJO). For the special case of a linear model ...
Interaction between the Tidal and Seasonal Variability of the Gulf of Maine and Scotian Shelf Region
Publisher: American Meteorological Society
Abstract: s part of a broader study of ocean downscaling, the seasonal and tidal variability of the Gulf of Maine and Scotian shelf, and their dynamical interaction, are investigated using a high-resolution (1/36°) circulation model. ...