Figure 7: The averaged Ratios over Beijing and its surrounding regions during three periods of Parade and APEC.
From: A paradox for air pollution controlling in China revealed by “APEC Blue” and “Parade Blue”
The black outline represents Beijing city, and the red five-pointed star indicates the MAX-DOAS observation site at Beijing urban area (40°N, 116°22′48″E). This figure was generate by IDL 8.2 (http://www.esrichina.com.cn).
