Examining the Impact of Nitrous Acid Chemistry on Ozone and PM over the Pearl River Delta Region

<table>The geographic coverage of CMAQ model overlapped with urban density fraction (scaled from 0% to 100%) over Pearl River Delta region, China. ▲ represents the locations of urban cities over this region, in which the star sites Yuen Long (YL), Tsuen Wan (TW) and Tap Mum (TM) are there ambient air quality monitoring stations in Hong Kong with hourly continuous observation data for criteria pollutants. ■ represents the location of Xinken (XK) site.</table>

Advances in Meteorology

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Figure 1

Figure 1: Examining the Impact of Nitrous Acid Chemistry on Ozone and PM over the Pearl River Delta Region 