Crop Residue Burning in Northeast China and Its Impact on PM2.5 Concentrations in South Korea

The impact of crop residue burning in northeastern China on South Korean PM2.5 concentrations was assessed via weather conditions, air quality modeling (AQM), and composition data during two cases exceeding 35 µg·m−3 November 2015. concentration simulations Case 1 differed from observations by 3.7–17.6 µg·m−3, overestimating the levels 6–36%; however, 2 varied 20.0–59.8 observations, with a 53–91% underestimation. generally well simulated, whereas simulation failed because emissions China, as confirmed through satellite analysis (MODIS fires thermal anomalies) previous research, were not considered. portion organic/elemental carbon ratio 1.6–2.3 times higher than that 1. These results suggest it is necessary to consider effects northeast establish countermeasures improve forecasting Korea.