Urban Boundary-Layer Stability and Turbulent Exchange during Consecutive Episodes of Particle Air Pollution in Beijing, China
GUO Xiao-Feng1, YANG Ting1, MIAO Shi-Guang2, SUN Ye-Le1
Figure 1 Time series of ambient mass concentrations of PM 2.5 Mc, red curve. The blue dashed line indicates the 24-h average values of Mc 25 April 2012 is a clean-air day.