A New Look at Stratospheric Sudden Warmings. Part III: Polar Vortex Evolution and Vertical Structure

Abstract

The evolution of the Arctic polar vortex during observed major midwinter stratospheric sudden warmings (SSWs) is investigated for the period 1957–2002, using 40-yr European Centre for Medium-Range Weather Forecasts (ECMWF) Re-Analysis (ERA-40) Ertel’s potential vorticity (PV) and temperature fields. Timelag composites of vertically weighted PV, calculated… (More)

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Cite this paper

@inproceedings{Matthewman2009ANL, title={A New Look at Stratospheric Sudden Warmings. Part III: Polar Vortex Evolution and Vertical Structure}, author={Naomi Matthewman and J. G. Esler and Andrew J. Charlton-Perez and Lorenzo M. Polvani}, year={2009} }