Results 51 to 60 of about 645,962 (239)

Long extra-tropical planetary wave propagation in the presence of slowly varying mean flow and bottom topography. II: ray propagation and comparison with observations [PDF]

, 2003
Ray theory is used to predict phase and group velocities for long planetary waves under realistic, albeit slowly varying, oceanic conditions. The results are compared with local theory using fields smoothed to the same amount (9° latitude/longitude) as ...
Killworth, Peter D., Marchesiello, Patrick, Blundell, Jeffrey R., Killworth, P.D., Peter D. Killworth, Shchepetkin, Alexander, Mcwilliams, James, C., Jeffrey R. Blundell, Mcwilliams, James,, Blundell, J.R.   +9 more
core   +1 more source

Multiscale numerical sensitivity simulations of a mesoscale gravity‐wave event

Quarterly Journal of the Royal Meteorological Society, EarlyView.
High‐resolution WRF simulations of the February 14–15, 1992 STORM‐FEST event show that mesoscale gravity‐wave genesis occurs via geostrophic adjustment within an upper‐level unbalanced jet, while wave ducting governs maintenance. High‐resolution (1 km), improved physical parameterization, and targeted sensitivity simulations demonstrate that upstream ...
Rajan Bhandari, Michael L. Kaplan, Ananya Sen   +2 more
wiley   +1 more source

The decay of cyclonic eddies by Rossby wave radiation [PDF]

, 1998
It is argued that because shallow water cyclones on a β-plane drift westward at a speed equal to an available Rossby wave phase speed, they must radiate energy and cannot, therefore, be steady. The form of the Rossby wave wake accompanying a quasi-steady
McDonald, NR
core  

Inertial Waves in a Nonlinear Simulation of the Sun's Convection Zone and Radiative Interior

The Astrophysical Journal
Recent observations of Rossby waves and other more exotic forms of inertial oscillations in the Sun’s convection zone have kindled the hope that such waves might be used as a seismic probe of the Sun's interior. Here, we present a 3D numerical simulation
Catherine C. Blume, Bradley W. Hindman, Loren I. Matilsky   +2 more
doaj   +1 more source

Topographic Algebraic Rossby Solitary Waves: A Study Using Physics-Informed Neural Networks

Atmosphere
This study explores the influence of topography on Rossby solitary waves by analyzing the dynamics in both inner and outer regions, with solutions matched at the boundary.
Weiqi Zhang, Quansheng Liu, Liqing Yue, Ruigang Zhang   +3 more
doaj   +1 more source

Roles of Rossby Waves, Rossby–Gravity Waves, and Gravity Waves Generated in the Middle Atmosphere for Interhemispheric Coupling [PDF]

Journal of the Atmospheric Sciences, 2021
AbstractIt has often been reported that warming at high latitudes in the Southern Hemisphere (SH) summer mesosphere and lower thermosphere (MLT) appears during Arctic sudden stratospheric warming (SSW) events. This phenomenon, which is called “interhemispheric coupling” (IHC), has been thought to occur because of the modulation of mesospheric ...
openaire   +1 more source

Subseasonal forecasts of the MJO and convectively coupled equatorial waves in ACCESS‐S2 and GraphCast: A multi‐year analysis

Quarterly Journal of the Royal Meteorological Society, EarlyView.
ACCESS‐S2 performs better in predicting longer time‐scale and slower moving waves (MJO and equatorial Rossby waves), while GraphCast performs better in predicting shorter and faster moving waves (Kelvin and mixed Rossby–gravity waves). However, both models systematically underestimate precipitation amplitude across all wave types, especially over the ...
Beata Latos, Hanh Nguyen, Matthew C. Wheeler, Chen Li, Catherine de Burgh‐Day, Muhammad E. Hassim, Sandeep Sahany, Aurel Moise   +7 more
wiley   +1 more source

Identification of Rossby Atmosphere-Tropical Cyclone in Eastern Indonesian Waters

Jurnal Ilmu Dasar
Recent research has revealed that tropical cyclones can develop over eastern Indonesian waters influenced by marine heatwaves and Rossby waves in the atmosphere.
Maldiva Hafiza Anjarika Suhendar, Erma Yulihastin, Alya Fitri Syalsabilla, Syifa Alifia Azzahra, Gentur Handoyo, Agus Wawan Ridwan, Maulana Dwi Nur Dawami   +6 more
doaj   +1 more source

Benjamin-Ono-Burgers-MKdV Equation for Algebraic Rossby Solitary Waves in Stratified Fluids and Conservation Laws

Abstract and Applied Analysis, 2014
In the paper, by using multiple-scale method, the Benjamin-Ono-Burgers-MKdV (BO-B-MKdV) equation is obtained which governs algebraic Rossby solitary waves in stratified fluids. This equation is first derived for Rossby waves. By analysis and calculation,
Hongwei Yang, Shanshan Jin, Baoshu Yin
doaj   +1 more source

Rossby wave instability in astrophysical discs [PDF]

Fluid Dynamics Research, 2014
A brief review is given of the Rossby wave instability (RWI) in astrophysical discs. In non-self-gravitating discs, around for example a newly forming stars, the instability can be triggered by an axisymmetric bump at some radius $r_0$ in the disc surface mass-density. It gives rise to exponentially growing non-axisymmetric perturbation [$\propto \exp({
Lovelace, R. V. E., Romanova, M. M.
openaire   +2 more sources