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RISA Barotropic Envelope Rossby Soliton Model for Block–Eddy Interaction. Part III: Wavenumber Conservation Theorems for Isolated Blocks and Deformed Eddies
Publisher: American Meteorological Society
Abstract: In a series of previous papers, an envelope Rossby soliton theory was formulated to investigate the interaction between a preexisting planetary wave and synoptic-scale eddies leading to a typical blocking flow. In this ...
A Barotropic Envelope Rossby Soliton Model for Block–Eddy Interaction. Part II: Role of Westward-Traveling Planetary Waves
Publisher: American Meteorological Society
Abstract: The role of westward-traveling planetary waves in the block onset and the deformation of eddies during the interaction between synoptic-scale eddies and an incipient block is first examined by constructing an incipient ...
A Barotropic Envelope Rossby Soliton Model for Block–Eddy Interaction. Part I: Effect of Topography
Publisher: American Meteorological Society
Abstract: A new forced envelope Rossby soliton model in an equivalent barotropic beta-plane channel is proposed to describe the interaction between an incipient block (planetary scale) and short synoptic-scale eddies. This model is ...
A Barotropic Envelope Rossby Soliton Model for Block–Eddy Interaction. Part IV: Block Activity and Its Linkage with a Sheared Environment
Publisher: American Meteorological Society
Abstract: In this paper, a basic-state flow that has a linear, weak meridional shear is used as a mean flow condition to see if the blocking activity is related to the state of the zonal mean flow based upon the envelope soliton ...
Ural Blocking as an Amplifier of the Arctic Sea Ice Decline in Winter
Publisher: American Meteorological Society
Abstract: AbstractIn this paper, the lead?lag relationship between the Arctic sea ice variability over the Barents?Kara Sea (BKS) and Ural blocking (UB) in winter (DJF) ranging from 1979/80 to 2011/12 is examined. It is found that ...
The North Atlantic Oscillation and the North Atlantic Jet Variability: Precursors to NAO Regimes and Transitions
Publisher: American Meteorological Society
Abstract: n this paper, precursors to the North Atlantic Oscillation (NAO) and its transitions are investigated to understand the dynamical cause of the interdecadal NAO variability from dominant negative (NAO?) events during 1950?77 ...
The Role of Land–Sea Topography in Blocking Formation in a Block–Eddy Interaction Model
Publisher: American Meteorological Society
Abstract: This paper is an extension of a theoretical study by Luo on the effect of large-scale land?sea contrast (LSC) topography on the formation of an eddy-driven blocking. It is found that the topography term can be included ...
The Influence of Negative Viscosity on Wind-Driven, Barotropic Ocean Circulation in a Subtropical Basin
Publisher: American Meteorological Society
Abstract: In this paper, a new barotropic wind-driven circulation model is proposed to explain the enhanced transport of the western boundary current and the establishment of the recirculation gyre. In this model the harmonic Laplacian ...
A nonlinear multi-scale theory of atmospheric blocking: Eastward and upward propagation and energy dispersion of tropospheric blocking wave packet
Publisher: American Meteorological Society
Abstract: In this paper, a nonlinear multi-scale interaction model is used to examine how the planetary waves associated with eddy-driven blocking wave packets propagate through the troposphere in vertically varying weak baroclinic ...
Coupling of Wind and Potential Temperature in an Ekman Model in the Stratified Atmospheric Boundary Layer
Publisher: American Meteorological Society