Analysis of the Atmospheric Visibility in Nanchang City and the Main Effect Factors

摘要

The performance of atmospheric visibility at Nanchang, China was studied in this paper. The relationship between atmospheric visibility and the meteorological elements was analyzed using statistical method based on those data of Nanchang atmospheric visibility and the observed record of ground meteorological elements from 1990 to 2012. The relationship between the major air pollutants and the atmospheric visibility also was researched according to the air pollutant monitoring data from 2006 to 2012. The result shows that Nanchang atmospheric visibility has the characteristics of obvious inter-annual variability, Rose and diurnal variation; the visibility was significantly negatively correlated to relative humidity; there was weakly negative correlation between the air pollutants SO_2, NO_x concentration and the visibility.