Articles | Volume 15, issue 9
Atmos. Chem. Phys., 15, 5161–5179, 2015
https://doi.org/10.5194/acp-15-5161-2015
Atmos. Chem. Phys., 15, 5161–5179, 2015
https://doi.org/10.5194/acp-15-5161-2015
Research article
11 May 2015
Research article | 11 May 2015

Origin of springtime ozone enhancements in the lower troposphere over Beijing: in situ measurements and model analysis

J. Huang et al.

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High ozone concentrations (up to 94.7ppbv) were frequently observed at an altitude of ~1.5--2km over Beijing during April--May 2005. Ozone due to Asian anthropogenic pollution made major contributions to the observed ozone enhancements. These enhancements typically occurred under southerly wind and warmer conditions. An earlier onset of the Asian summer monsoon would cause more ozone enhancement events in the lower troposphere over the North China Plain in late spring and early summer.
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