Analysis of SO<sub>2</sub> Pollution Changes of Beijing-Tianjin-Hebei Region over China Based on OMI Observations from 2006 to 2017

<div>Average SO<sub>2</sub> column (in DU, twelve years) of thirteen cities in the BTH region.</div>

Advances in Meteorology

Figure 11: Analysis of SO<sub>2</sub> Pollution Changes of Beijing-Tianjin-Hebei Region over China Based on OMI Observations from 2006 to 2017 