Volume 17, No. 3, March 2017, Pages 923-935 PDF(9.11 MB)
Analysis of the Temporal and Spatial Variation of Aerosols in the Beijing-Tianjin-Hebei Region with a 1 km AOD Product
Lin Sun, Rui-Bo Li, Xin-Peng Tian, Jing Wei
Geomatics College, Shandong University of Science and Technology, Shandong, Qingdao 266590, China
- 1 km resolution AOD was retrieved in Beijing, Tianjin and Hebei region.
- Validation with AERONET shows that the inversed AOD can reach a high precision.
- The distribution of aerosol and the impact factors was analyzed with 1 km AOD.
The Beijing-Tianjin-Hebei region is one of the most polluted areas in China, especially in terms of particulate matter pollution. To describe the aerosol distribution of such an area, the aerosol optical depth (AOD) with a 1 km spatial resolution was retrieved from MODIS data based on a new high-resolution <1000 m> aerosol retrieval algorithm with a priori land surface reflectance (LSR) database support (HARLS). Continuous AOD data from 2013 and 2014 retrieved by this algorithm were used to analyze the spatial and temporal distribution of the AOD in the above area. The AOD in the Beijing-Tianjin-Hebei region has obvious regional and seasonal variations. The AOD in the south and east is higher than in the north and west, and the AOD in spring and summer is higher than that in winter and autumn.
AOD; High spatial resolution; Beijing-Tianjin-Hebei region; Temporal and spatial variation.