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RISRole of the Rossby Waves in the Broadening of an Eastward Jet
Publisher: American Meteorological Society
Abstract: o investigate the effect of the Rossby waves on an eastward jet such as the Kuroshio or Gulf Stream Extensions, a series of numerical experiments is conducted using a primitive equation model. In these experiments, an ...
Upgradient and Downgradient Potential Vorticity Fluxes Produced by Forced Rossby Waves. Part II: Parameter Sensitivity and Physical Interpretation
Publisher: American Meteorological Society
Abstract: AbstractWe examine the potential vorticity (PV) flux produced by forced Rossby waves in a two-layer quasigeostrophic model, using a perturbation analysis. Rossby waves are excited by external forcing applied to the upper ...
Upgradient and Downgradient Potential Vorticity Fluxes Produced by Forced Rossby Waves. Part I: Basic Experiments
Publisher: American Meteorological Society
Abstract: AbstractThe mean flow and potential vorticity (PV) flux produced by Rossby waves are examined, particularly by focusing on the effects of stratification and nonlinearity on upgradient and downgradient PV fluxes. Rossby ...
Chaotic Mixing and Transport Barriers in an Idealized Stratospheric Polar Vortex
Publisher: American Meteorological Society
Abstract: Chaotic mixing processes and transport barriers around the wintertime stratospheric polar vortex are investigated with an idealized barotropic model, previously used by Ishioka and Yoden. A barotropically unstable jet is ...
A Study on the Effects of Bottom Topography on Deep Circulation with a Diffusive Reduced-Gravity Model
Publisher: American Meteorological Society
Abstract: Abyssal circulation around a sea mountain and a depression in a midlatitude basin is investigated with a reduced-gravity model characterized by vertical and horizontal diffusion of both momentum and density. Above either ...
An Application of a Diffusive Reduced-Gravity Model to Deep Circulation above Various Forms of Bottom Topography
Publisher: American Meteorological Society
Abstract: A diffusive reduced-gravity model is applied to the deep circulation over a diversity of idealized bottom topography such as a basinwide uniform slope, a Gaussian sea mountain, or their complex. Although different circulations ...
Three-Dimensional Structure of Thermohaline Circulation Steered by Bottom Topography
Publisher: American Meteorological Society
Abstract: An investigation based on the expansion in terms of diffusive vertical modes is made on the effect of an isolated seamount on the three-dimensional structure of thermohaline circulation driven by an inflow of deep water. ...
Structure of the Circulation Induced by a Shoaling Topographic Wave
Publisher: American Meteorological Society
Abstract: The structure of the potential vorticity flux and a mean flow induced by a topographic wave incident over a bottom slope are investigated analytically and numerically, with focus on the case that bottom friction is the ...
A Spectral Cumulus Parameterization Scheme Interpolating between Two Convective Updrafts with Semi-Lagrangian Calculation of Transport by Compensatory Subsidence
Publisher: American Meteorological Society
Abstract: he authors have developed a new spectral cumulus parameterization scheme that explicitly considers an ensemble of multiple convective updrafts by interpolating in-cloud variables between two convective updrafts with large ...
Influence of Fluid Viscosity on the Hydraulic Fracturing Mechanism
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Cubical granite specimens were fractured by borehole pressurization of 1 cP water, 80 cP oil and via a urethane sleeve. Viscous oil tends to generate thick and planar cracks with few branches, ...