Extreme weather conditions associated with climate change may extend the ozone season in the Southeastern United States as drought-stressed trees emit more of the precursor compound that helps form the health-threatening pollutant. July and August have traditionally been peak ozone months, but a new study suggests those peaks could extend well into the fall as weather becomes warmer and drier. Ironically, the projected extension of ozone season comes at a time when summertime ground-level ozone levels continue to decline as a result of emission reductions mandated by the Clean Air Act. The paper is believed to be the first to connect variations in ground-level ozone concentrations to the drought stress on trees. Climate modeling suggests that over the next several decades, the Southeast will experience more periods of weather variability, with hot and dry conditions favorable to isoprene emission from trees becoming more likely. In two separate years, both since 2000, they identified unexpected ozone peaks during the month of October and found that those peaks corresponded to spikes in the level of isoprene, a compound emitted by trees. We are likely to have record ozone days in the fall, and we need to prepare for that."
The new findings of extended Ozone season suggests that our recent findings of stopping global warming are happening in small locations and not on a global scale. We need to continue our research for global solutions for global warming and how we can all begin to stop the Ozone extension season. https://www.sciencedaily.com/releases/2016/08/160822155924.htm
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. Archives
May 2017
Categories |