WEATHER WATCH: APRIL 3, 2015

 

As if the warmer-than-average temperatures and lack of runoff from the Sierra snowpack weren’t bad enough, a UC Davis scientist this week revealed findings that smog from other countries, mostly Asia, is drifting into the already polluted San Joaquin Valley. Last summer, California was out of compliance with federal ozone rules for 99 days in the San Joaquin Valley, up from 89 the year before. The region also recently missed a federal deadline for cleaning up its winter air of sooty particulates, a development blamed on warm, dry conditions and stagnant air.

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