Andrew Charlton-Perez

TL;DR: In this paper, the authors describe the main differences in simulations of stratospheric climate and variability by models within the fifth Coupled Model Intercomparison Project (CMIP5).

TL;DR: In this paper, 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.

TL;DR: In this article, the authors compared a new classification technique of weak vortex events, based on the distribution of potential vorticity, with that of an existing technique and demonstrated that the subdivision of such events into vortex displacements and vortex splits has important implications for tropospheric weather patterns on weekly to monthly time scales.

TL;DR: Sudden stratospheric warmings (SSWs) are impressive fluid dynamical events in which large and rapid temperature increases in the winter polar stratosphere (10−50km) are associated with a complete reversal of the climatological wintertime westerly winds.

TL;DR: In this article, the authors investigated the role of the stratosphere in the European winter surface climate response to El Nino-Southern Oscillation sea surface temperature forcing using an intermediate general circulation model with a well-resolved stratosphere.