Yesterday, an article in the Dallas Morning News talked about ozone alerts and what is being done to protect us from smog. With everything from highway signs promoting carpooling to police raids on shops selling phony inspection stickers, the government is cracking down on this ongoing problem.
In August alone, there were nine days that North Texas regional ozone levels reached unhealthy levels for sensitive groups. Now, the latest research says that as individuals, we have the most powerful tool for controlling our own protection from smog – personal choice. That means staying indoors when there are high ozone alerts. And many North Texans are heeding the warnings. For instance, on high-ozone days that are predicted by the weather bureau in advance, there are fewer North Texans with asthma who rush to emergency rooms or are hospitalized. Conversely, when there are no warnings and we have high ozone days, hospital visits because people didn’t know the danger in advance.
Researcher Ginger Smith Carles performed a study on whether North Texas’ ozone alerts cause people to change their behavior. According to Carles, “People do respond to this information about air quality. From my study, it looks like the alert system is protective. People can take steps to protect themselves.” Other research studies have found similar results for programs warning of ozone danger alerts.
By definition, ozone is a tasteless, odorless but extremely harmful air pollutant that primarily comprises smog. O in zone is primarily a summer danger due to strong sunlight cooking emissions in the air to form ozone. The emissions that are created in the morning become smog in the afternoon. People most at risk from ozone are the very young, the elderly and anyone with asthma or other lung ailments.
The Environmental Protection Agency Administrator, Lisa P. Jackson, is preparing to announce a tighter national limit on ozone. Although ozone levels have decreased since 2000, they’re still much higher than the strict standards Jackson is expected to set.
Some of the steps to crack down on ozone include state financial aid for early replacement of older, higher-polluting diesel equipment, including trucks, as well as smog checks for most gas-powered vehicles, which are the largest cause of smog-causing emissions in North Texas. Additionally, undercover police officers are being sent into shops accused of selling fake inspection stickers. A primary component to the new anti-smog campaign is the state environmental commission’s air pollution watch system. At the Austin headquarters, experts review daily weather conditions and issue an ozone watch if high levels are expected the following day.
The easiest and most obvious choice to preventing exposure to smog is to stay indoors. However, that’s not always possible, of course. And ultimately, it’s not a solution as it doesn’t address the cause of smog – ozone emissions. Plus, according to Carles’ study, the more ozone alerts we have, the less seriously people take them. If there are several consecutive days of ozone alerts, people tend to heed the warning the first few days, and then ignore them. And with constant ozone alerts, people could also start considering high ozone alerts as normal and take absolutely no action.


