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Linear and nonlinear aspects of the northern hemisphere wintertime variability in the 500 hPa height field
Low-frequency variability in the Northern Hemisphere wintertime 500 hPa height field has been investigated. The Pacific/North American pattern and the North Atlantic Oscillation stand out above the background continuum of variability in rotated EOF analysis based on the temporal covariance matrix. It is shown that these spatial ...
The roles of wave-zonal flow interaction and orographic forcing on the generation of low-frequency variability in a newly developed GCM
A full-Galerkin GCM is developed for mechanistic studies on the generation mechanisms of low-frequency variability. The numerical implementation and baroclinic dynamics of this newly developed GCM are carefully tested, and its sensitivity to vertical resolution and to parameterized physics are also investigated.The role of ...