Results 61 to 70 of about 10,386,151 (162)

Simulating the year to minute wind spectrum with mesoscale‐coupled large‐eddy simulations

open access: yesQuarterly Journal of the Royal Meteorological Society, Volume 152, Issue 777, April 2026 Part B.
We coupled a large‐eddy simulation (resolution 50 m) to a mesoscale model (resolution 2 km), which takes boundary conditions from the ERA5 reanalysis. When using a large enough mesoscale domain (𝒪(1000 km)), the simulation setup can reproduce the observed temporal wind spectrum reasonably at all scales between one year and one minute. Furthermore, such
Bernard Postema   +5 more
wiley   +1 more source

Energy Conversion Pathways Inside Kelvin‐Helmholtz Vortices

open access: yesJournal of Geophysical Research: Space Physics, Volume 131, Issue 3, March 2026.
Abstract Energy transfer, cross‐scale coupling, and dissipation in astrophysical plasmas remain fundamental unresolved problems. The velocity‐shear–driven Kelvin–Helmholtz instability (KHI), ubiquitous in plasmas, is a key multiscale mechanism enabling plasma mixing, particle energization and the solar wind–magnetosphere coupling, making it a critical ...
A. Settino   +5 more
wiley   +1 more source

Guided Unconditional and Conditional Generative Models for Super‐Resolution and Inference of Quasi‐Geostrophic Turbulence

open access: yesJournal of Advances in Modeling Earth Systems, Volume 18, Issue 3, March 2026.
Abstract Typically, numerical simulations of Earth systems are coarse, and Earth observations are sparse and gappy. We apply four generative diffusion modeling approaches to super‐resolution and inference of forced two‐dimensional quasi‐geostrophic turbulence on the β $\beta $‐plane from coarse, sparse, and gappy observations.
Anantha Narayanan Suresh Babu   +2 more
wiley   +1 more source

Mechanics of inhomogeneous turbulence and interfacial layers [PDF]

open access: yes, 2006
The mechanics of inhomogeneous turbulence in and adjacent to interfacial layers bounding turbulent and non-turbulent regions are analysed. Different mechanisms are identified according to the straining by the turbulent eddies in relation to the strength ...
Hunt, J.C.R.   +5 more
core   +1 more source

Gravity wave turbulence in a laboratory flume [PDF]

open access: yes, 2007
We present an experimental study of the statistics of surface gravity wave turbulence in a flume of a horizontal size 12×6  m. For a wide range of amplitudes the wave energy spectrum was found to scale as Eω∼ω-ν in a frequency range of up to one decade ...
Nazarenko, Sergey   +2 more
core   +1 more source

Solar cycle dependence of scaling in solar wind fluctuations [PDF]

open access: yes, 2008
In this review we collate recent results for the statistical scaling properties of fluctuations in the solar wind with a view to synthesizing two descriptions: that of evolving MHD turbulence and that of a scaling signature of coronal origin that ...
B. Hnat   +6 more
core   +2 more sources

Anisotropic three-dimensional MHD turbulence [PDF]

open access: yes, 1996
Direct spectral method simulation of the three-dimensional magnetohydrodynamics (MHD) equations is used to explore anisotropy that develops from initially isotropic fluctuations as a consequence of a uniform applied magnetic field.
Matthaeus, William H.   +7 more
core   +1 more source

Oceanic non-Kolmogorov optical turbulence and spherical wave propagation

open access: yes, 2020
Optics Express, 2021, 29(2): 1340-1359 Light propagation in turbulent media is conventionally studied with the help of the spatio-temporal power spectra of the refractive index fluctuations.
Zhang, Yu   +6 more
core   +2 more sources

Transport of Solar Wind Fluctuations: A Two-Component Model [PDF]

open access: yes, 2011
We present a new model for the transport of solar wind fluctuations which treats them as two interacting incompressible components: quasi-two-dimensional turbulence and a wave-like piece.
Matthaeus, William H.   +13 more
core   +1 more source

The influence of a mean magnetic field on three-dimensional magnetohydrodynamic turbulence [PDF]

open access: yes, 1994
Building on results from two-dimensional magnetohydrodynamic (MHD) turbulence (Shebalin, Matthaeus & Montgomery 1983), the development of anisotropic states from initially isotropic ones is investigated numerically for fully three-dimensional ...
Priest, Eric R.   +2 more
core   +1 more source

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