Atmospheric Chemistry and Physics www.atmos-chem-phys.net 1680-7316 1680-7324 9 20 2009 10.5194/acp-9-7711-2009 http://www.atmos-chem-phys.net/9/7711/2009/ http://www.atmos-chem-phys.net/9/7711/2009/acp-9-7711-2009.html http://www.atmos-chem-phys.net/9/7711/2009/acp-9-7711-2009.pdf 7711 7723 2009-10-16 Rates and regimes of photochemical ozone production over Central East China in June 2006: a box model analysis using comprehensive measurements of ozone precursors Y. Kanaya yugo@jamstec.go.jp P. Pochanart Y. Liu J. Li H. Tanimoto S. Kato J. Suthawaree S. Inomata F. Taketani K. Okuzawa K. Kawamura H. Akimoto Z. F. Wang Research Institute for Global Change, Japan Agency for Marine-Earth Science and Technology, Yokohama, Japan National Institute for Environmental Studies, Tsukuba, Japan Tokyo Metropolitan University, Hachioji, Japan Institute of Low Temperature Science, Hokkaido University, Sapporo, Japan LAPC/NZC, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China An observation-based box model approach was undertaken to estimate concentrations of OH, HO₂, and RO₂ radicals and the net photochemical production rate of ozone at the top of Mount Tai, located in the middle of Central East China, in June 2006. The model calculation was constrained by the measurements of O₃, H₂O, CO, NO, NO₂, hydrocarbon, HCHO, and CH₃CHO concentrations, and temperature and <I>J</I> values. The net production rate of ozone was estimated to be 6.4 ppb h^&minus;1 as a 6-h average (09:00–15:00 CST), suggesting 58&plusmn;37 ppb of ozone is produced in one day. 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