SOURCE: Los Angeles Times

DATE: December 5, 2017

SNIP: California could be hit with significantly more dangerous and more frequent droughts in the near future as changes in weather patterns triggered by global warming block rainfall from reaching the state, according to new research led by scientists at Lawrence Livermore National Laboratory.

Using complex new modeling, the scientists have found that rapidly melting Arctic sea ice now threatens to diminish precipitation over California by as much as 15% within 20 to 30 years. Such a change would have profound economic impacts in a state where the most recent drought drained several billion dollars out of the economy, severely stressed infrastructure and highlighted how even the state most proactively confronting global warming is not prepared for its fallout.

“As we learn more about the subtleties in the dynamics of climate change, we are learning that certain climate change impacts, like California drought, may be far worse than we had previously thought,” [Michael] Mann [director of the Earth System Science Center at Pennsylvania State University] wrote. “It also means that, when it comes to water resource issues in California, the impacts of climate change may exceed our adaptive capacity. That leaves only mitigation — doing something about climate change — as a viable strategy moving forward.”