Study of Spatial Variations of Air Pollutants in Ulaanbaatar

Abstract

Long-term air pollution data with spatial resolutions are needed to aid in the research of Ulaanbaatar's air quality and to discover which residential areas have higher pollutant levels. However, until recently, similar study was rare in Mongolia. This study examines the spatial variations of PM2.5, PM10, CO, SO2, NO2 and O3 in 13 monitoring stations in Ulaanbaatar between January 2014 and December 2020. For the overall averaged pollutant values in all stations, they exceeded the Mongolian National Standard for PM10, PM2.5, SO2, and NO2, while O3 and CO were provided that standard (MNS 4585:2016) and their highest occurrences were 94.7%, 95.6%, 50.6%, 42.4%, 90.5%, and 34.75%, respectively, higher than the daily average MNAQS.