Can Washington, Oregon and Idaho handle average temperatures more than 5 degrees warmer, 5 percent more annual precipitation, one-third less winter snowpack and a mountain snow line as much as 1,500 feet higher?
Climate models show such changes are possible in the three-state Columbia River Basin by the middle of the next century as a result of human causes, primarily the spewing of greenhouse gases such as carbon dioxide into the atmosphere, a broad panel of scientists and policy analysts said today.