Abstract: he two leading empirical orthogonal functions (EOFs) of zonal-mean zonal wind describe north?south fluctuations, and intensification and narrowing, respectively, of the midlatitude jet. Under certain circumstances, these ...

Abstract: he seasonal variability of the polar stratospheric vortex is studied in a simplified AGCM driven by specified equilibrium temperature distributions. Seasonal variations in equilibrium temperature are imposed in the ...

Abstract: he authors test the hypothesis that recent observed trends in surface westerlies in the Southern Hemisphere are directly consequent on observed trends in the timing of stratospheric final warming events. The analysis begins ...

Abstract: AbstractStratosphere?troposphere interactions are conventionally characterized using the first empirical orthogonal function (EOF) of fields such as zonal-mean zonal wind. Perpetual-winter integrations of an idealized model ...

Abstract: AbstractMuch research has focused on trends in the Southern Hemispheric circulation in austral summer (December?February) in the troposphere and stratosphere, whereas changes in other seasons have received less attention. ...