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Impacts of an unknown daytime HONO source on the mixing ratio and budget of HONO, and hydroxyl, hydroperoxyl, and organic peroxy radicals, in the coastal regions of China

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Academic year: 2017

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Figure 1. Summary of observed HONO mixing ratios at noon (black font) and the calculated unknown daytime HONO source (blue font) from field studies.
Figure 2. Correlation of the unknown daytime HONO source (P unknown ) (ppb h −1 ) with (a) [NO 2 ] (ppb) and (b) [NO 2 ] × J (NO 2 ) (ppb s −1 ), based on the field experiment data shown in Fig
Figure 3. Model domains used in this study. Domain 2 covers the Beijing–Tianjin–Hebei (BTH), Yangtze River delta (YRD), and Pearl River delta (PRD) regions.
Figure 4. Comparison of simulated and observed hourly mean mixing ratios of NO 2 and O 3 in (a) Beijing on 14–28 August 2007 and (b) Guangzhou on 11–23 July 2006.
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