Projected risk of high ozone episodes in 2050

► Climate change tend to foster the risk of high ozone episodes over major industrial regions. ► The risk of hazardous episodes decrease in developed regions by 2050 (A1B/B1). ► But increase in developing regions by 2050 (A1B/B1). ► Under the A1FI scenario, the risk in all regions increases by 2050. ► The changes of ozone level are more significant on the high value part.