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C-1.2.2 Budget Study of Environment Acidifying Components with International Ground-Based Observation

[Contact Person]

Kentaro Murano
Senior Research Scientist
Global Environment Research Division
National Institute for Environmental Studies
Environment Agency
Onogawa 16-2, Tsukuba, Ibaraki, 305-0053 Japan
Tel: +81-298-50-2537 Fax: +81-298-50-2579
E-mail: murano@nies.go.jp

Total Budget for FY1996-FY1998

34,841,000 Yen (FYI 998; 1 1 ,472,000 Yen)

Abstract

A large amount of SO₂ and NO_x which were the precursor of acid rain is emitted in East Asia followed by European continent and Northern America continent. Transboundary air pollution is one of the most important environmental issues in East Asia. In order to clarify the transboundary air pollution to Japan from Asian continent, we conducted an intensive field survey of air pollutants at remote island in East China Sea and semi-urban sampling point in winter season. January and Dccember 1997. Occasional high concentration of nss-SO₄^2-were observed in both sampling sites indicating the air pollutants covering larger than 200 km, for the two sampling points are separated around 1 90 km. From the ion balance of chcmieal component of collected aerosol, under transboundary air pollution, unncutralized sulfate contributed to the acidity of aerosol.

[Key Words]

East Asia, Budget Study, Ground-Based Observation, Remote Island