<b>東アジアから輸送されるエアロゾル化学成分の航空機観測                    </b>

畠山 史郎, 新垣 雄光, 渡邉  泉, 張  代洲

doi:10.11203/jar.29.s95

Three campaigns of aerial observations were carried out by using Goto-Fukue Airport as the base of observations in autumn, winter, and spring, which are the seasons of air pollutant transportation from East Asia. The aerial observation campaigns were made in October 2009 for autumn, in December2010 for winter, and in March 2012 for spring. In the autumn observations three characteristic types of different air mass were observed. One was an air mass affected by sea salts with high concentrations of Na^＋ and Cl^-. Second was an air mass that had passed above the Korean Peninsula (judged so based on calculated backward trajectories) and, thus, containing anthropogenic emission from Korea with high concentration of SO₄^2-and NH₄^＋. Third was an air mass with Kosa (Asian Dust) with high concentration of Ca^2＋ and metallic elements originating from soil, such as Al and Fe. In the winter observations more Kosa could be observed, again with high concentration of Ca^2＋ and metallic elements of soil origin, such as Al and Fe. In this case, SO₄^2-and NH₄^＋ were also high. In the spring observations, high concentrations of SO₂ (higher than 20 ppb) were found, as well as other anthropogenic pollutants within dense haze, which strongly suggested the impact of emissions from East Asia.

<b>東アジアから輸送されるエアロゾル化学成分の航空機観測 </b>

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