Results 21 to 30 of about 5,189 (258)
Modulational instability of Rossby and drift waves and generation of zonal jets [PDF]
, 2010 We study the modulational instability of geophysical Rossby and plasma drill waves within the Charney-Hasegawa-Mima (CH M) model both theoretically, using truncated (four-mode and three-mode) models, and numerically, using direct simulations of CHM ...
Connaughton, Colm +3 more
core +1 more source
Topographic solitary waves and groups
Ocean and Coastal Research, 2022 We examine nonlinear topographic waves in barotropic, rigid lid models with a focus on how depth shapes can or cannot support solitary waves. Comparisons between the full equations and the quasigeostrophic system show that the conditions for vanishing ...
Glenn R. Flierl
doaj +1 more source
Implications of the Semigeostrophic Nature of Rossby Waves for Rossby Wave Packet Detection [PDF]
Monthly Weather Review, 2015 Abstract Upper-tropospheric Rossby wave packets have received increased attention recently. In most previous studies wave packets have been detected by computing the envelope of the meridional wind field using either complex demodulation or a Hilbert transform.
Wolf, Gabriel, Wirth, Volkmar
openaire +1 more source
Green’s functions for Rossby waves [PDF]
Journal of Fluid Mechanics, 2017 Compact solutions are presented for planetary, non-divergent, barotropic Rossby waves generated by (i) an impulsive point source and (ii) a sustained point source of curl of wind stress. Previously, only cumbersome integral expressions were known, rendering them practically useless.
R. C. Kloosterziel, L. R. M. Maas
openaire +4 more sources
Percolation transition in the kinematics of nonlinear resonance broadening in Charney–Hasegawa–Mima model of Rossby wave turbulence [PDF]
, 2013 We study the kinematics of nonlinear resonance broadening of interacting Rossby waves as modelled by the Charney-Hasegawa-Mima equation on a biperiodic domain. We focus on the set of wave modes which can interact quasi-resonantly at a particular level of
Harris, Jamie +2 more
core +1 more source
Frontiers in Astronomy and Space Sciences, 2022 Rossby waves have been recently recognised for their role in the large-scale spatio-temporal organisation of the solar magnetic activity. Here, we study the propagation of magnetohydrodynamic Rossby waves in a thin layer, representing the solar ...
André S. W. Teruya +2 more
doaj +1 more source
Simulating Properties of “Seasonal” Variability in Solar Activity and Space Weather Impacts
Frontiers in Astronomy and Space Sciences, 2021 Solar short-term, quasi-annual variability within a decadal sunspot-cycle has recently been observed to strongly correlate with major class solar flares, resulting into quasi-periodic space weather “seasons.” In search for the origin of this quasi ...
Mausumi Dikpati +2 more
doaj +1 more source
Rossby wave energy: a local Eulerian isotropic invariant [PDF]
Journal of Fluid Mechanics, 2021 <p>Conservation laws relate the local<span>&#160; </span>time-rate-of-change of the spatial integral of a density function to the divergence of its<span>&#160; </span>flux through the boundaries of the integration domain.
R.C. Kloosterziel, L.R.M. Maas
openaire +3 more sources
On the forcings of the unusual Quasi-Biennial Oscillation structure in February 2016 [PDF]
Atmospheric Chemistry and Physics, 2020 The westerly phase of the stratospheric Quasi-Biennial Oscillation (QBO) was reversed during Northern Hemisphere winter 2015/2016 for the first time since records began in 1953.
H. Li +5 more
doaj +1 more source
A numerical model study of the effects of interannual timescale wave propagation on the predictability of the Atlantic meridional overturning circulation [PDF]
, 2013 We investigate processes leading to uncertainty in forecasts of the Atlantic meridional overturning circulation (AMOC). A climate model is used to supply initial conditions for ensemble simulations in which members initially have identical ocean states ...
Blaker, Adam Tobias +3 more
core +1 more source