Correlation of ozone with NOy in photochemically aged air
Article first published online: 21 SEP 2012
Copyright 1993 by the American Geophysical Union.
Journal of Geophysical Research: Atmospheres (1984–2012)
Volume 98, Issue D2, pages 2917–2925, 20 February 1993
How to Cite
1993), Correlation of ozone with NOy in photochemically aged air, J. Geophys. Res., 98(D2), 2917–2925, doi:10.1029/92JD01910., et al. (
- Issue published online: 21 SEP 2012
- Article first published online: 21 SEP 2012
- Manuscript Accepted: 12 AUG 1992
- Manuscript Received: 19 MAR 1992
During the summer of 1988, measurements of photochemical trace species were made at a coordinated network of seven rural sites in the eastern United States and Canada. At six of these sites concurrent measurements of ozone and the sum of the reactive nitrogen species, NOy, were made, and at four of the sites a measure for the reaction products of the NOx oxidation was obtained. Common to all sites, ozone, in photochemically aged air during the summer, shows an increase with increasing NOy levels, from a background value of 30–40 parts per billion by volume (ppbv) at NOy mixing ratios below 1 ppbv to values between 70 to 100 ppbv at NOy levels of 10 ppbv. Ozone correlates even more closely with the products of the NOx oxidation. The correlations from the different sites agree closely at mixing ratios of the oxidation products below 5 ppbv, but systematic differences appear at higher levels. Variations in the biogenic hydrocarbon emissions may explain these differences.