Advances in Meteorology / 2014 / Article / Fig 6

Research Article

The Impact of Nonlocal Ammonia on Submicron Particulate Matter and Visibility Degradation in Urban Shanghai

Figure 6

Air massbackward trajectories for 500- and 1000-meter altitude arriving in the measurement site at the very beginning of the haze periods (a) 3/12 at 12:00, (b) 7/12 at 22:00, (c) 14/12 at 12:00, (d) 16/12 at 15:00, (e) 21/12 at 09:00, (f) 22/12 at 09:00, (g) 23/12 at 07:00, and (h) 29/12 at 23:00.
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