New Anti-Smog Restrictions Could Warm Planet

[thundley4]

The Environmental Protection Agency's proposal to tighten the ozone standard for smog will have an unfortunate side effect: Because of a quirk of atmospheric chemistry, those measures will hasten global warming.

There's no question that smog is a hazard that deserves attention. Lydia Wegman of the EPA says the new ozone limits would have significant health benefits.

Less smog means fewer asthma attacks, fewer kids in the hospital, fewer days of lost school, "and we also believe that we can reduce the risk of early death in people with heart and lung disease," she says.

Here's the tough part: The way many states and localities will reduce smog is by cracking down on the chemicals that produce ozone. And those include nitrogen oxides, or NOx.

The Net Effect Could Make Global Warming Worse

But Jason West at the University of North Carolina in Chapel Hill says that when you reduce NOx, you don't just reduce ozone; you change the chemistry of the atmosphere in such a way that you end up increasing the amount of methane in the air. And methane is a potent gas when it comes to global warming.

"By reducing NOx, the net effect is you make global warming worse," West says.

In fact, you could make warming a lot worse. If you got rid of all NOx and a related sulfur compound, that action alone would be enough to increase the Earth's temperature by 2 degrees Celsius — and that's in the danger zone for the climate, according to many scientists and governments.

  NPR

We'll have to cut CO₂ even more to combat this effect. Let's put plastic bags on all liberal's heads.