Atmospheric circulation and dynamic mechanism for persistent haze events in the Beijing–Tianjin–Hebei region

In this study, regional persistent haze events (RPHEs) in the Beijing–Tianjin–Hebei (BTH) region were identified based on the Objective Identification Technique for Regional Extreme Events for the period 1980–2013. The formation mechanisms of the severe RPHEs were investigated with focus on the atmo... View More