Airborne Measurements of Ozone and Its Precursors over Yeosu-Gwangyang Industrial Areas in the Southern Coast of Korea

다국어 초록 (Multilingual Abstract)

The purpose of this study is to understand distributional characteristics in the atmospheric concentrations of O3 and its precursors based on data taken at the southern Korean coast. The average O3 concentration in the high altitude was found to range from 32.3 to 90.8 ppb with a maximum concentration of 132 ppb. The ambient O3 concentration was high at altitudes of 1000 m and 500 m above the southern sea near Gwangyang Bay and an industrial area containing emission sources. The daily mean concentrations of NOy and CO were 6.7-24.2 ppb and 0.152-0.487 ppm, respectively. During the aerial measurement period, the highest mean concentration of O3was observed on June 1. The aerial measurement results showed that the maximum ozone concentration was observed to be 132 ppb in the high altitude the southernmost part of Yeosu. The measurement of vertical wind fields in the air indicated that O3 formed in the southernmost part of Yeosu was transported by strong southwesterly winds to the northeast of Gwangyang Bay. This led to a ground O3 concentration of over 100 ppb in Jinju, the northeastern part of Gwangyang Bay. On August 9, when the maximum O3 concentration was 50 ppb, the measurement results showed that O3 concentrations were relatively low compared to other days. In particular,low NO2 and TVOC concentrations were observed,both of which serve to form O3 in photochemical reactions.

참고문헌 (Reference)

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