Details

Autor(en) / Beteiligte

• Brown, S. S
• Ryerson, T. B
• Wollny, A. G
• Brock, C. A
• Peltier, R
• Sullivan, A. P
• Weber, R. J
• Dube, W. P
• Trainer, M
• Meagher, J. F
• Fehsenfeld, F. C
• Ravishankara, A. R

Titel

Variability in Nocturnal Nitrogen Oxide Processing and Its Role in Regional Air Quality

Ist Teil von

• Science (American Association for the Advancement of Science), 2006-01, Vol.311 (5757), p.67-70

Ort / Verlag

Washington, DC: American Association for the Advancement of Science

Erscheinungsjahr

2006

Quelle

Science Online科学在线

Beschreibungen/Notizen

• Nitrogen oxides in the lower troposphere catalyze the photochemical production of ozone (O₃) pollution during the day but react to form nitric acid, oxidize hydrocarbons, and remove O₃ at night. A key nocturnal reaction is the heterogeneous hydrolysis of dinitrogen pentoxide, N₂O₅. We report aircraft measurements of NO₃ and N₂O₅, which show that the N₂O₅ uptake coefficient, g(N₂O₅), on aerosol particles is highly variable and depends strongly on aerosol composition, particularly sulfate content. The results have implications for the quantification of regional-scale O₃ production and suggest a stronger interaction between anthropogenic sulfur and nitrogen oxide emissions than previously recognized.