Nitric Oxide Radical - This radical is a primary pollutant from many sources, the most common and abundant is automobile exhaust. Its importance in the atmosphere is great because it is a catalyst in the destruction of ozone.
[S. Bailey; C. Barth; and S. Solomon. A model of nitric oxide in the lower thermosphere]
[Journal of Geophysical Research, Vol. 107, No 0, 2002. p1-14.]
Atmospheric Chemistry Glossary