Dec 8, 2014 1:48 PM
Feds: Don't blame California drought on warming
The Associated Press
WASHINGTON (AP) A new federal report says you can't blame man-made global warming for the devastating California drought.
A report issued Monday by the National Oceanic and Atmospheric Administration said natural variations mostly a La Nina weather oscillation were the primary drivers behind the drought that has now stretched to three years.
Study lead author Richard Seager of Columbia University the paper has not yet been published in a peer-reviewed scientific journal. He and NOAA's Martin Hoerling said 160 runs of computer models show heat-trapping gases should slightly increase winter rain in parts of California.
Some outside climate scientists criticized the report, saying it didn't take into effect how record warmth worsened the drought.
Peer-reviewed studies are divided on whether the drought can be blamed on climate change.