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Turbulence is everywhere -- it rattles our airplanes and makes tiny whirlpools in our bathtubs -- but it's one of the least understood phenomena in physics.Turbulence occurs when an ordered fluid flow...
Coupling a new turbulence parametrization to RegCM adds realistic stratocumulus clouds
turbulence parametrization RegCM adds realistic stratocumulus
2014/12/10
To model stratocumulus clouds in the regional climate model, RegCM4.1, the University of Washington (UW)
turbulence parametrization has been coupled to RegCM. We
describe improvements in RegCM’s coa...
Anomalous diffusion in geophysical and laboratory turbulence
Anomalous diffusion in geophysical laboratory turbulence
2009/11/16
We present an overview and some new results on anomalous diffusion of passive scalar in turbulent flows (including those used by Richardson in his famous paper in 1926). The obtained results are based...
Geophysical turbulence data and turbulence theory
Geophysical turbulence data turbulence theory
2009/11/16
Many vital insights into the nature of turbulence in fluids have originated from experimental data obtained in geophysical flows. Geophysical data have often helped to stimulate the creation of new tu...
Spectral evolution of two-layer weak geostrophic turbulence.Part I:Typical scenarios
Spectral evolution two-layer weak geostrophic turbulence Typical scenarios
2009/11/16
Long-time evolution of large-scale geophysical flows is considered in a β-plane approximation. Motions in an infinite 2-layer model ocean are treated as a system of weakly nonlinear Rossby waves (weak...
The question of which length scale equation to use in models of turbulence has long been controversial and several approaches have been suggested and used in the past. In this paper, we demonstrate th...
Turbulence in nearly incompressible fluids:density spectrum,flows,correlations and implication to the interstellar medium
nearly incompressible fluids density spectrum flows correlations implication interstellar medium
2009/11/9
Interstellar scintillation and angular radio wave broadening measurements show that interstellar and solar wind (electron) density fluctuations exhibit a Kolmogorov-like k-5/3 power spectrum extending...
Anisotropic turbulence and zonal jets in rotating flows with a β-effect
Anisotropic turbulence zonal jets rotating flows β-effect
2009/11/9
Numerical studies of small-scale forced, two-dimensional turbulent flows on the surface of a rotating sphere have revealed strong large-scale anisotropization that culminates in the emergence of quasi...
Energetic particle parallel diffusion in a cascading wave turbulence in the foreshock region
Energetic particle parallel diffusion wave turbulence foreshock region
2009/11/3
We study parallel (field-aligned) diffusion of energetic particles in the upstream of the bow shock with test particle simulations. We assume parallel shock geometry of the bow shock, and that MHD wav...
On Waves,Oceanic Turbulence,and Their Interaction
ocean waves turbulence air-sea interaction surface roughness
2009/6/10
Much progress in understanding the coupling between the atmosphere and the sea has been made
during the past years. Here we discuss the implications of the recent discovery of enhanced (above wall la...
The Auroral Turbulence II sounding rocket was launched into a moderately active night-side
aurora from the Poker Flat Research Range, Alaska, US. This unique three payload rocket experiment contained...