How Does Global Warming Affect Vehicle Emissions?


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(Davis, CA)
Tuesday, July 15, 2008

You probably know that car and truck exhaust contributes to global warming.  But you might not know that global warming’s higher temperatures actually change what comes out of those tailpipes.  UC Davis professor Michael Kleeman says scientists largely agree that global warming increases the amount of ozone in the air.  But …
 
Kleeman: “What isn’t as settled yet is what climate change will do to the other main component of photochemical smog, which is the airborne particles that are in the atmosphere.  And that’s a really complicated question.” 
 
So the U.S. Environmental Protection Agency has awarded Kleeman’s research group $900,000 to answer that question.  The group will look at both conventional and alternative-fuel vehicles.
 
Then, using that data, researchers will try to find out how those changed emissions will affect air quality in California – and how that air quality could influence local weather patterns.