The relationships between meteorological parameters and air pollutants in an urban environment

Meteorological parameters play a significant role in affecting ambient air quality of an urban environment. As Dhaka, the capital city of Bangladesh, is one of the air pollution hotspot among the megacities in the world, however the potential meteorological influences on criteria air pollutants for this megacity are remained less studied. The objectives of this research were to examine the relationships between meteorological parameters such as daily mean temperature (^oC), relative humidity (%) and rainfall (mm) and, the concentration of criteria air pollutants (SO₂, CO, NOx, O₃, PM_2.5 and PM₁₀) from January, 2013 to December, 2017. This study also focused on the trend analysis of the air pollutants concentration over the period. Spearman correlation was applied to illustrate the…