| Budget Amount *help |
¥14,560,000 (Direct Cost: ¥11,200,000、Indirect Cost: ¥3,360,000)
Fiscal Year 2012: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2011: ¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2010: ¥8,060,000 (Direct Cost: ¥6,200,000、Indirect Cost: ¥1,860,000)
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| Research Abstract |
Changes in the optical properties of organic aerosol particles upon exposure to HOx radicals, major atmospheric oxidants, were measured in the laboratory. Dependence of the scattering coefficient on the relative humidity was measured with an integrating nephelometer equipped with a humidifier. In addition to aging, presence of organics originally having large hygroscopicity could control the optical properties of the atmospheric organic aerosols. These findings were used to interpret the roles of organics in determining the humidity dependence of the aerosol scattering coefficient as observed in China and Fukue Island.
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