High ozone levels are generally bad for human health. Ozone aggravates asthma, and can induce coughing and weezing. That’s why the study is so significant, says lead researcher Michael Kleeman. It demonstrates scientifically that climate change encourages the formation of ozone.
“When we see hotter temperatures like the 100-degree weather, we usually see higher ozone concentrations in response to that and you can look at the last 20 years of measurements and see those types of trends on those measurements.”
Kleeman says emissions stagnate in mountain valley regions like San Joaquin Valley and Los Angeles. He says additional pollution controls are needed to offset climate change. The study also looked at the effect of climate change on pollution-causing airborne particles, but did not come to any conclusive results.