Extratropical cyclone near Australia 2012 (IMAGE) University of Chicago Caption A new study by the University of Chicago and University of Washington lays out for the first time why the Southern Hemisphere is stormier than the Northern. Above: An extratropical cyclone off the coast of Australia in 2012. Credit NASA Usage Restrictions No restrictions. License Public Domain Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.