Abstract: Long decorrelation time scales of the annular mode are observed in the lower stratosphere. This study uses a simple dynamical model, which has been used extensively to study stratosphere?troposphere coupling to investigate ...

Abstract: he mean state, variability, and extreme variability of the stratospheric polar vortices, with an emphasis on the Northern Hemisphere (NH) vortex, are examined using two-dimensional moment analysis and extreme value theory ...

Abstract: strong link exists between stratospheric variability and anomalous weather patterns at the earth?s surface. Specifically, during extreme variability of the Arctic polar vortex termed a ?weak vortex event,? anomalies can ...

Abstract: ith extreme variability of the Arctic polar vortex being a key link for stratosphere?troposphere influences, its evolution into the twenty-first century is important for projections of changing surface climate in response ...