Despite a lot more people and cars, California's air is cleaner

Jun 11, 2013 by Julie Cart

Despite a threefold increase in people and cars in the last 50 years, California's strict vehicle emissions standards have managed to significantly clear the state's air, according to new research.

The study also found that Southern California's air chemistry has changed for the better. The amount of organic nitrates in the atmosphere - which cause smog's eye-stinging irritation - has drastically fallen off, according to federal researchers.

Ozone and other pollutants have been monitored in the state since the 1960s. Since then the population in Southern California has tripled, as has the number of cars on the road. Nevertheless, have decreased.

The 's Cooperative Institute for Research in Environmental Sciences at the University of Colorado led the research, which analyzed decades of data and collected from overflights in 2010.

The researchers credited the state's stringent emissions standards with bringing about the , although they note that automobiles remain the dominant emissions source in Los Angeles.

Explore further: Could Iceland volcano disrupt air travel?

not rated yet
add to favorites email to friend print save as pdf

Related Stories

US to require lower-sulfur gasoline

Mar 29, 2013

The Obama administration is expected to propose new rules Friday that would slash the amount of sulfur in gasoline, one of the most significant steps the administration can take this term toward cutting air pollution, said ...

Recommended for you

Could Iceland volcano disrupt air travel?

12 minutes ago

Following further reports of seismic activity around volcanoes in Iceland, scientists from the University's Department of Meteorology provide comment on the likelihood of an eruption - and how any ash plume ...

Thailand totters towards waste crisis

2 hours ago

A blaze at a vast rubbish dump home to six million tonnes of putrefying trash and toxic effluent has kindled fears that poor planning and lax law enforcement are tipping Thailand towards a waste crisis.

Changing global diets is vital to reducing climate change

19 hours ago

A new study, published today in Nature Climate Change, suggests that – if current trends continue – food production alone will reach, if not exceed, the global targets for total greenhouse gas (GHG) emissi ...

Water police on patrol in drought-scarred Los Angeles

Aug 31, 2014

Los Angeles isn't the world's wettest city at the best of times. But a record drought has triggered extra measures—now including "water police" checking on over-zealous sprinkler users and the like.

User comments : 0