Characteristics of Atmospheric Compositions in the Background Area of Yangtze River Delta during Heavy Air Pollution Episode

<div>Active fire locations and 96 hr air mass backward trajectories of Lin’an station. (a) Prehaze period (25~30 Nov. 2013), (b) haze period (4~9 Dec. 2013), and (c) posthaze period (10~14 Dec. 2013).</div>

Advances in Meteorology

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Figure 1

Figure 1: Characteristics of Atmospheric Compositions in the Background Area of Yangtze River Delta during Heavy Air Pollution Episode 