Impact of Greenhouse Gas Emissions from Commercial Aircraft on Radiative Forcing and Temperature Change at the Airports in Korea: Comparison between Simplified Expression and Radiative Transfer Model

In this study, spatial and temporal variations of radiative forcing (RF) and mean temperature changes due to greenhouse gases (CO2, CH4, and N2O) emitted from commercial aircraft were examined based on the simplified expression at the airports in Korea during 2009 similar to 2010. The radiative transfer model (SBDART) was used to compare with the RF and mean temperature changes calculated from the simplified expressions for greenhouse gas CO2. The RF simulated by the SBDART was about 67% higher than that of the simplified expression, on average. The highest mean RF (up to 9.0 mW/m(2) for CO2) and mean temperature changes (up to 9.7x10(-5) degrees K/day for CO2) for all GHGs occurred at Ulsan airport during the study period, whereas the lowest RF and temperature changes at Yangyang (for CO2) and Sacheon airports (for CH4 and N2O). In the case of CH4 and N2O, their effects to the RF and mean temperature change were negligible compared to CO2.