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초록

In this study, comparison analysis on the results of PM2.5 forecasting simulation
was carried out by using two different initial and boundary conditions of meteorological
fields: NCEP/GFS and KMA/UM forecasting data. The cases in this study show a
difference of around 16 to 22 g/m3 in the prediction results of PM2.5 between the two
models and a maximum difference of 18 g/m3 from the observation results. The PM2.5
simulation results using the two models as an initial meteorological field showed greater
sensitivity to wind speed than temperature, and the higher the wind speed, the lower the
PM2.5 concentration. Even with a small difference in the simulated wind speed of
meteorological field, the simulation results of the PM2.5 concentration showed a large
difference. Comparing observations and simulations for wind speeds that are more
sensitive than temperature, in all cases, both models overestimated wind speeds of about
1 m/s on average and up to 4 m/s by time. The IOA of