Study: Beijing measures effect of emission controls on air quality

David RobertsResearch0 Comments

The implementation of strict emission control measures in Beijing and surrounding regions during the 2015 China Victory Day Parade provided a valuable opportunity to investigate related air quality improvements in a megacity.
This multi-institutional study, published in the Journal of Atmospheric Chemistry and Physics on behalf of the European Geosciences Union, measured NH3, NO2 and PM2:5at multiple sites in and outside Beijing and summarized concentrations of PM2:5, PM10, NO2, SO2and CO in 291 cities across China from a national urban air quality monitoring network be-tween August and September 2015.
Consistently significant reductions of 12–35 % for NH3 and 33–59 % for NO2 in different areas of Beijing during the emission control period (referred to as the Parade Blue period) were observed compared with measurements in the pre- and post-Parade Blue periods without emission controls.

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