Observational Study Of Atmospheric Aerosol Scattering Characteristics In Northern Suburb Of Nanjing

By using Integrating Nephelometer (TSI3563) observed in the northern suburb of Nanjing, the four seasons of atmospheric aerosol scattering coefficient of the northern suburb of Nanjing hourly changes in diurnal and seasonal changes, combined with meteorological data analysis Precipitation, visibility, humidity, wind speed and wind direction on the aerosol scattering coefficient. By using the thermoelectric devices,we also analysis the relationship between main gas pollutants (SO2 and NO2) and aerosol scattering coefficient in the four seasons.(1) Seasonal changes of aerosol scattering coefficient, the lowest average in the spring and the autumn is the highest, winter and spring is not very different. Fall is affected by the surrounding straw burning influenced the stability of the weather conditions will produce more pollution. Diurnal variation of aerosol scattering coefficient is a single valley bimodal type, peak time is different as the seasons change.(2) Meteorological conditions on aerosol scattering coefficient is becoming larger, significant precipitation for the removal of aerosol effects can be worse after precipitation 600Mm-1. Visibility and scattering coefficient is negatively correlated. Surface wind speed and direction of the observation point has a great impact on the scattering coefficient, scattering coefficient has high value when the wind easterly, southerly and the west wind,the coefficient has lower value.(3) In different seasons, scattering coefficients and SO2,NO 2 concentration have some relevance. For SO2, in the autumn, the largest correlation with the scattering coefficient. NO2 have the relationship with scattering coefficient in the spring.Because of the summer precipitation, SO2,NO2 between scattering coefficient have no great relevance.