AN ANALYSIS OF WET DEPOSITION OF SULFATE USING A TRAJECTORY MODEL FOR EAST ASIA

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  • 東アジア地域を対象としたトラジェクトリー型モデルによる硫酸イオンの湿性沈着の解析
  • ヒガシ アジア チイキ オ タイショウ ト シタ トラジェクトリーガタ モデル

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Abstract

A long-range transport model for East Asia was developed to estimate wet deposition of sulfate. The results obtained by the long-range transport model were evaluated through comparison with observation data of acidic deposition. The observation was conducted at 21 stations throughout Japan for one year. The calculated amount of wet deposition of sulfate in Japan was 0.22Tg/y in S equivalent, while the observed one was 0.29Tg/y. The long-range transport model can predict almost 80% of the observed wet deposition. The contribution of the sulfur oxides from volcanic eruption to wet deposition amounted to about 20%.

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