Results 21 to 30 of about 645,962 (239)

Implications of the Semigeostrophic Nature of Rossby Waves for Rossby Wave Packet Detection [PDF]

open access: yesMonthly 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

Predictability and dynamics of potential vorticity streamers and connections to high impact weather [PDF]

open access: yes, 2012
Narrow potential vorticity (PV) intrusions across the tropopause (PV streamers) are interconnected with surface high- and low- pressure systems and frequently present during high-impact weather in the mid-latitudes. They often form during the breaking of
Twitchett, Arwen Fay
core   +6 more sources

Green’s functions for Rossby waves [PDF]

open access: yesJournal 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

Ray Tracing of MHD Rossby Waves in the Solar Tachocline: Meridional Propagation and Implications for the Solar Magnetic Activity

open access: yesFrontiers 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

Do multiple peaks in the Radon Transform of westward propagating sea surface height anomalies correspond to higher order Rossby wave Baroclinic modes? [PDF]

open access: yes, 2004
This study examines the presence of multiple peaks from 2 dimensional Fourier and Radon Transform analysis for the entire South Pacific basin from 10 years of sea level anomalies determined from ERS (European Remote Sensing satellite) and T/P altimeter ...
Holbrook, N.J.   +2 more
core   +2 more sources

Percolation transition in the kinematics of nonlinear resonance broadening in Charney–Hasegawa–Mima model of Rossby wave turbulence [PDF]

open access: yes, 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

Rossby wave energy: a local Eulerian isotropic invariant [PDF]

open access: yesJournal of Fluid Mechanics, 2021
<p>Conservation laws relate the local<span>  </span>time-rate-of-change of the spatial integral of a density function to the divergence of its<span>  </span>flux through the boundaries of the integration domain.
R.C. Kloosterziel, L.R.M. Maas
openaire   +3 more sources

The contour-advective semi-Lagrangian hybrid algorithm approach to weather forecasting and freely propagating inertia-gravity waves in the shallow-water system [PDF]

open access: yes, 2009
This thesis is aimed at extending the spherical barotropic contour-advective semi-Lagrangian (CASL) Algorithm, written in 1996 by David Dritschel and Maarten Ambaum, to more complex test cases within the shallow-water context.
Smith, Robert K.
core   +2 more sources

Generation of zonal flows by Rossby waves in the atmosphere [PDF]

open access: yesNonlinear Processes in Geophysics, 2004
A novel mechanism for the short-scale Rossby waves interacting with long-scale zonal flows in the Earth's atmosphere is studied. The model is based on the parametric excitation of convective cells by finite amplitude Rossby waves. We use a set of coupled
O. G. Onishchenko   +4 more
doaj  

Simulating Properties of “Seasonal” Variability in Solar Activity and Space Weather Impacts

open access: yesFrontiers 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

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