A growing collection of studies has shown that global warming entails more than just higher temperatures. Extreme weather events are occurring more often and are becoming increasingly powerful in many parts of the world, necessitating an urgent need to forecast and prepare for them. The results of a new modeling study led by the University of Tsukuba predict that "atmospheric rivers" will cause more frequent and severe extreme downpour events across East Asia.  Atmospheric rivers are long, narrow regions of concentrated water vapor moving across the atmosphere....