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Increasing springtime ozone mixing ratios in the free troposphere over western North America.
Cooper OR, Parrish DD, Stohl A, Trainer M, Nédélec P, Thouret V, Cammas JP, Oltmans SJ, Johnson BJ, Tarasick D, Leblanc T, McDermid IS, Jaffe D, Gao R, Stith J, Ryerson T, Aikin K, Campos T, Weinheimer A, Avery MA. Cooper OR, et al. Among authors: thouret v. Nature. 2010 Jan 21;463(7279):344-8. doi: 10.1038/nature08708. Nature. 2010. PMID: 20090751