Effect of air pollutant concentration according to the height of the Planetary boundary layer in Ulsan

The atmospheric boundary layer is a layer that directly responds to energy emitted or absorbed from the ground into the atmosphere, and is greatly affected by various meteorological factors, which change the concentration of air pollutants. There is generally an inversion layer above the atmospheric boundary layer, so most of the air pollutants emitted by humans cannot escape to the outside of the atmospheric boundary layer and remain there. Ulsan Metropolitan City in Korea is known as the largest industrial city in Korea. These industrial cities generally emit more air pollutants than other cities. Since these air pollutants are greatly affected by the boundary layer, it is important to accurately calculate the height of the boundary layer. In this study, we compare the height of the atmospheric boundary layer based on LiDAR and the height of the atmospheric boundary layer in the Weather Research and Forecasting numerical model, and examine how the height of the atmospheric boundary layer affects the change in the concentration of air pollutants.