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Turbulent diffusion in the geostrophic inverse cascade
, 2002
"... Motivated in part by the problem of largescale lateral turbulent heat transport in the Earth’s atmosphere and oceans, and in part by the problem of turbulent transport itself, we seek to better understand the transport of a passive tracer advected by various types of fully developed twodimensional ..."
Abstract

Cited by 51 (7 self)
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model we assume that tracer variance is maintained by a largescale mean tracer gradient while turbulent energy is produced at small scales via random forcing, and dissipated by linear drag. We predict the spectral shapes, eddy scales and equilibrated energies resulting from the inverse cascades
Energy cascade processes in stratified turbulence
"... The atmospheric energy spectrum as a function of horizontal wavenumber over the range from a few kilometers to the synoptic scales was obtained by Nastrom et al. (1984) and Nastrom and Gage (1985). They found that the spectra follow the −3 power law in the range 1000 to 3000 km and the −5/3 power la ..."
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that inverse energy cascade could occur in stratified turbulence. However, Métais et al. (1994) showed that effective upscale energy cascade and a −5/3 spectral slope are not realized for the parameter range of the atmospheric mesoscales. Although Koshyk et al. (1999, 2001) performed the numerical simulation
Diffusivity, Kinetic Energy Dissipation, and Closure . . .
 J. ATMOS. SCI
, 2003
"... Diffusive eddy closure theory for estimating the poleward heat flux is reexamined and tested in the context of a twolayer homogeneous model. Consideration of the inverse energy cascade induced by baroclinic turbulence on the b plane leads to an expression for diffusivity in terms of the kinetic e ..."
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Diffusive eddy closure theory for estimating the poleward heat flux is reexamined and tested in the context of a twolayer homogeneous model. Consideration of the inverse energy cascade induced by baroclinic turbulence on the b plane leads to an expression for diffusivity in terms of the kinetic
enstrophy cascades
, 2007
"... The structures responsible for the inverse energy and the forward ..."
STRUCTURE FORMATION IN SPECTRALLY CONDENSED TURBULENCE
"... Twodimensional (2D) turbulence supports the inverse energy cascade and the spectral condensate generation, which are studied in laboratory experiments. The generation of the spectral condensation via the inverse energy cascade dramatically reduces the radial transport in 2D flows. In this paper we ..."
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Twodimensional (2D) turbulence supports the inverse energy cascade and the spectral condensate generation, which are studied in laboratory experiments. The generation of the spectral condensation via the inverse energy cascade dramatically reduces the radial transport in 2D flows. In this paper we
Surface quasigeostrophic dynamics
, 1995
"... The dynamics of quasigeostrophic flow with uniform potential vorticity reduces to the evolution of buoyancy, or potential temperature, on horizontal boundaries. There is a formal resemblance to twodimensional flow, with surface temperature playing the role of vorticity, but a different relationshi ..."
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Cited by 117 (3 self)
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wave’ critical layer; and mixing in an overturning edge wave. Characteristics of the direct cascade of the tracer variance to small scales in homogeneous turbulence, as well as the inverse energy cascade, are also described. In addition to its geophysical relevance, the ubiquitous generation
Enhanced inversecascade of energy in the averaged Euler equations
, 2000
"... For a particular choice of the smoothing kernel, it is shown that the system of partial differential equations governing the vortexblob method corresponds to the averaged Euler equations. These latter equations have recently been derived by averaging the Euler equations over Lagrangian fluctuations ..."
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that the modification of the nonlinear advection term also acts to enhance the inversecascade of energy in twodimensional turbulence and thereby affects scales of motion larger than α as well. This latter effect is reminiscent of the dragreduction that occurs in a turbulent flow when a dilute polymer is added. 1
Direct and Inverse Cascades in the WindDriven
"... We offer a new form for the Snl term in the Hasselmann kinetic equation for squared wave amplitudes of winddriven gravity wave. This form of Snl makes possible to rewrite in differential form the conservation laws for energy, momentum, and wave action, and introduce their fluxes by a natural way. ..."
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, Kolmogorov spectra are found in the explicit form. We show that a general solution of the stationary kinetic equation behind the spectral peak is described by the Kolmogorovtype solution with frequencydependent fluxes. The domains of ”inverse cascade ” and ”direct cascade ” can be separated by a natural
as CrossStream “Inverse Cascades ” of Vorticity
, 809
"... A commonplace view of pressuredriven turbulence in pipes and channels is as “cascades” of streamwise momentum toward the viscous layer at the wall. We present in this paper an alternative picture of these flows as “inverse cascades ” of spanwise vorticity, in the crossstream direction but away fro ..."
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A commonplace view of pressuredriven turbulence in pipes and channels is as “cascades” of streamwise momentum toward the viscous layer at the wall. We present in this paper an alternative picture of these flows as “inverse cascades ” of spanwise vorticity, in the crossstream direction but away
EXPERIMENTS IN TURBULENT SOAPFILM FLOWS: MARANGONI SHOCKS, FRICTIONAL DRAG, AND ENERGY SPECTRA BY
"... We carry out unprecedented experimental measurements of the frictional drag in turbulent soapfilm flows over smooth walls. These flows are effectively twodimensional, and we are able to create soapfilm flows with the two types of turbulent spectrum that are theoretically possible in two dimension ..."
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dimensions: the “enstrophy cascade, ” for which the spectral exponent α = 3, and the “inverse energy cascade, ” for which the spectral exponent α = 5/3. We find that the functional relation between the frictional drag f and the Reynolds number Re depends on the spectral exponent: where α = 3, f ∝ Re−1
Results 11  20
of
7,198