Research Article
A Study on Parameterization of the Beijing Winter Heavy Haze Events Associated with Height of Pollution Mixing Layer
Figure 6
A physic schema shows the mechanism for forming the severe hazy weather or heavy pollution event in December 2016 in Beijing. Left section (tephigram): CIN exceeding the threshold value (shown in the green area) indicated that lowered H_PMLā is favorable for accumulation of PM2.5ā. Isentropic chart shows that the overlapped pollution has been transported from the surrounding areas of Beijing.