Measurements of N2O5, NO2, and O3 east of the San Francisco Bay. Wood, E., C., Bertram, T., H., Wooldridge, P., J., & Cohen, R., C. Atmospheric Chemistry and Physics, 5(2):483-491, 2005.
Measurements of N2O5, NO2, and O3 east of the San Francisco Bay [pdf]Paper  Measurements of N2O5, NO2, and O3 east of the San Francisco Bay [link]Website  abstract   bibtex   
Contra Costa County, California during January 2004. Mixing ratios of N2O5, an intermediate compound in the atmosphere's nocturnal cleansing process, ranged up to 200 pmol/mol at night. The highest N2O5 concentrations were correlated with low O-3 and high NO2 concentrations. The calculated steady state lifetime for N2O5 ranged from 5 to 30 min. The total HNO3 produced by N2O5 hydrolysis over a 14 h night was comparable to ambient NO2 concentrations, and is estimated to be a factor of nine bigger than the HNO3 produced during the day.

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