Study on the Dispersion Simulation of Inhalable Particulates in Urban Streets
Based on the continuous monitoring data of PM10 concentration in Nanjing city road,an OSPM model was adopted for the dispersion simulation of inhalable particulates.The results show that there is a good agree-ment between the measured and simulated values.The measured and simulated mean concentrations are 0.135 mg/m3 and 0.139 mg/m3,respectively.The correlation coefficient between the measured and simulated values is R2=0.5898.The simulation effect of the OSPM model under high wind speed conditions is better than that under low wind speed conditions,and the correlation coefficients between the measured and simulated values are R2=0.76 and R2=0.4082,respectively.The OSPM model can effectively simulate the basic laws of pollutant diffusion in street canyons.
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