Merced National Wildlife Refuge

Cranes glide through the tule fog at the Merced National Wildlife Refuge. (Photo by Steve Corey via Flickr)

Falling levels of air pollution drove decline in California’s tule fog

The Central Valley’s heavy wintertime tule fog – known for snarling traffic and closing schools — has been on the decline over the past 30 years, and falling levels of air pollution are the cause, says a new study by scientists at the University of California, Berkeley.

Topics: Berkeley Engineering in the News, Civil engineering, Environment