| Budget Amount *help |
¥14,300,000 (Direct Cost: ¥11,000,000、Indirect Cost: ¥3,300,000)
Fiscal Year 2014: ¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2013: ¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2012: ¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
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| Outline of Final Research Achievements |
Methyl chloride (CH3Cl) is the most abundant long-lived volatile organochlorine compound in the atmosphere and thus acts as the major carrier of ozone-destroying chlorine to the stratosphere. To determine CH3Cl flux in tropical forest ecosystems, we developed a canopy-scale flux measurement system besed on the relaxed eddy accumulation (REA) technique which has not been applied to the measurement of CH3Cl flux. We conducted the canopy-scale flux measurements of CH3Cl above a tropical rainforest in Malaysia using the REA technique. The measurements showed a positive flux at the level of microgrom/m2/h, indicating emissions of CH3Cl from the forests to atmosphere.
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