Search
Now showing items 1-6 of 6
Eddy-Induced Instability for Low-Frequency Variability
Publisher: American Meteorological Society
Abstract: Synoptic eddy?mean flow interaction has been recognized as one of the key sources for extratropical low-frequency variability. In this paper, the underlying dynamics of this interaction are examined from the perspective ...
Intraseasonal Oscillations in the Extratropics: Hopf Bifurcation and Topographic Instabilities
Publisher: American Meteorological Society
Abstract: A potential vorticity model in a ?-channel is used to analyze the resonant response of equivalent-barotropic flow to topography in the presence of a forced zonal jet with arbitrary meridional structure. The nonlinear ...
Closures for Ensemble-Mean Linear Dynamics with Stochastic Basic Flows
Publisher: American Meteorological Society
Abstract: This paper demonstrates the validity of a second-order closure for the ensemble-mean dynamics using the approach of direct numerical ensemble simulations of a linear barotropic model with stochastic basic flows. For various ...
Dynamics of Synoptic Eddy and Low-Frequency Flow Interaction. Part I: A Linear Closure
Publisher: American Meteorological Society
Abstract: The interaction between synoptic eddy and low-frequency flow (SELF) has been recognized for decades to play an important role in the dynamics of the low-frequency variability of the atmospheric circulation. In this three-part ...
Dynamics of Synoptic Eddy and Low-Frequency Flow Interaction. Part III: Baroclinic Model Results
Publisher: American Meteorological Society
Abstract: In this three-part study, a linear closure has been developed for the synoptic eddy and low-frequency flow (SELF) interaction and demonstrated that internal dynamics plays an important role in generating the leading ...
Dynamics of Synoptic Eddy and Low-Frequency Flow Interaction. Part II: A Theory for Low-Frequency Modes
Publisher: American Meteorological Society
Abstract: Amidst stormy atmospheric circulation, there are prominent recurrent patterns of variability in the planetary circulation, such as the Antarctic Oscillation (AAO), Arctic Oscillation (AO) or North Atlantic Oscillation ...
CSV
RIS