Pollution responsible for acid rain and acid snow in coastal areas along the Sea of Japan travels via China and the Korean Peninsula during the winter, but comes from other areas in Japan in the summer, an environmental research laboratory in Niigata Prefecture said Friday.
The Niigata Prefectural Research Laboratory for Health and Environment made the findings — the first time in Japan that the movement of acid rain-causing pollution has been researched on a nationwide scale — based on surveys conducted by a national pollution study group.
An official at the laboratory said the analysis may shed light on the different approaches to solving the pollution problem, as it varies with the season.