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RISA Possible Influence of Equatorial Winds on the September 2002 Southern Hemisphere Sudden Warming Event
Publisher: American Meteorological Society
Abstract: The stratospheric sudden warming in the Southern Hemisphere (SH) in September 2002 was unexpected for two reasons. First, planetary wave activity in the Southern Hemisphere is very weak, and midwinter warmings have never ...
Solar and QBO Influences on the Timing of Stratospheric Sudden Warmings
Publisher: American Meteorological Society
Abstract: The interaction of the 11-yr solar cycle (SC) and the quasi-biennial oscillation (QBO) and their influence on the Northern Hemisphere (NH) polar vortex are studied using idealized model experiments and ECMWF Re-Analysis ...