A high-resolution index suitable for multi-pollutant monitoring in urban areas

In view of the problems involved in remote sensing monitoring urban air quality, including low spatial resolution, only for a single pollutant, complex inversion algorithms, and difficultly obtaining parameter values, this study, new difference smog index (DSI) was developed, then comparison with normal haze index, MODIS aerosol optical depth products. The results show that DSI model developed study has higher accuracy better effect areas, it resolution (30 m), which greatly improves degree refinement monitoring. extensibility, is suitable AQI, PM 2.5 , NO 2 . proposed paper simple easy to use, thus, high potential application deserves promotion quality • DSI(difference index) m); compared NDHI (normal DI (difference index), AOD products; ; DS