Articles | Volume 19, issue 7
Atmos. Chem. Phys., 19, 4439–4457, 2019
https://doi.org/10.5194/acp-19-4439-2019
Atmos. Chem. Phys., 19, 4439–4457, 2019
https://doi.org/10.5194/acp-19-4439-2019

Research article 05 Apr 2019

Research article | 05 Apr 2019

Effects of urbanization on regional meteorology and air quality in Southern California

Yun Li et al.

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In this study, we find that land surface changes via urbanization have caused reductions (increases) in air temperature and ventilation during the day (night) in Southern California. Changes in meteorology have consequently caused (a) increases in PM2.5 during the day, vice versa at night, and (b) increases in O3 for most times of day. These results suggest that all environmental systems should be taken into account when studying the influence of policies that impact the land surface in cities.
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