Spatial-temporal variations of pollutant emission sources inversed by adaptive nudging scheme over Beijing-Tianjin-Hebei region based on the CMAQ model
The pollutant source assimilation of nudging inversion method was applied to simulate the local sources of SO2 and NOxin Beijing-Tianjin-Hebei region during January,March,July and November 2014. The strengths,patterns,and geographical distribution of SO2 and NOxsources were compared with the original sources and the performance of inversed-source-based modeling was evaluated. The results showed that the sources of SO2 and NOxpresent obvious seasonal variations and is the strongest in winter or heating perio...