High Concentration of SO2 Observed Over the Sea of Japan


An aircraft observation of atmospheric pollutants was made over the western part of the Sea of Japan based on the IGAC/APARE/PEACAMPOT program on Nov. 11 and 12, 1992. High concentrations of SO2 and NOx were observed, and their distribution showed a clear dependence on wind direction. When wind blew from the west of north west, a very high concentration of SO2 (up to 10 ppb) was observed. The result of back trajectory analysis points to the contribution from industrialized areas of Korea.

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