Linkages with other issues
The air issues associated with NOx are:
- Acid Rain (acidification caused by deposition of acid and nitrate transformation products of NOx)
- Smog (contribution to secondary formation of ozone and fine PM)
- Visibility/Regional Haze (NOx contribution to secondary formation of fine PM)
- HAPs (potential adverse health effects from direct exposure to NO2 and/or its acid and nitrate transformation products makes NO2 a HAP in its own right)