Twenty-first century reversal of the surface ozone seasonal cycle over the northeastern United States
Clifton, OE; Fiore, AM; Correa, G; Horowitz, LW; Naik, V
| HERO ID | 2841487 |
|---|---|
| In Press | No |
| Year | 2014 |
| Title | Twenty-first century reversal of the surface ozone seasonal cycle over the northeastern United States |
| Authors | Clifton, OE; Fiore, AM; Correa, G; Horowitz, LW; Naik, V |
| Journal | Geophysical Research Letters |
| Volume | 41 |
| Issue | 20 |
| Page Numbers | 7343-7350 |
| Abstract | Changing emissions can alter the surface O-3 seasonal cycle, as detected from northeastern U.S. (NE) observations during recent decades. Under continued regional precursor emission controls (-72% NE NOx by 2100), the NE surface O-3 seasonal cycle reverses (to a winter maximum) in 21st century transient chemistry-climate simulations. Over polluted regions, regional NOx largely controls the shape of surface O-3 seasonal cycles. In the absence of regional NOx controls, climate warming contributes to a higher surface O-3 summertime peak over the NE. A doubling of the global CH4 abundance by 2100 partially offsets summertime surface O-3 decreases attained via NOx reductions and contributes to raising surface O-3 during December-March when the O-3 lifetime is longer. The similarity between surface O-3 seasonal cycles over the NE and the Intermountain West by 2100 indicates a NE transition to a region representative of baseline surface O-3 conditions. |
| Doi | 10.1002/2014GL061378 |
| Wosid | WOS:000345343100045 |
| Is Certified Translation | No |
| Dupe Override | No |
| Is Public | Yes |
| Language Text | English |
| Keyword | air pollution; climate change; ozone smog; methane |