Hotter Days, Heavier Rains Projected for United States

Many types of extreme events will increase in size and frequency in the future. That is the conclusion of climate experts who recently compared climate models to observed data. The scientists evaluated global climate models’ simulations of extreme events in the United States. They also examined the models’ future projections of the frequency and magnitude…

Winds, Waves, and Storms Are Growing Stronger

Certain storms are getting stronger and hitting more often in the Northern Hemisphere. That is the conclusion, reported by Russell Vose and colleagues, of one workshop in a series of National Climate Assessment workshops that examined changes in extreme weather events. Winds, waves and “extratropical” storms have increased in intensity and frequency over recent decades,…

Normal Variability Masks Greenhouse Gas Impact — For Now

Simple physics says that a warmer atmosphere can hold more water vapor. It follows that a warming climate should lead to heavier rain and snowstorms, leading in turn to greater threats to property, transportation and lives. Various studies of past changes in extreme precipitation in the Northwest have reached different conclusions depending on the period…