エアロゾル研究
Online ISSN : 1881-543X
Print ISSN : 0912-2834
ISSN-L : 0912-2834
特集1「大気有機エアロゾルの物理・化学的性質」
化学気候モデルにおける二次有機エアロゾルの全球モデリング
須藤 健悟荻原 由紀恵
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ジャーナル フリー

2012 年 27 巻 1 号 p. 51-61

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We have developed a global simulation of secondary organic aerosol (SOA) in a chemistry-aerosol coupled climate model (MIROC-CHASER-SPRINTARS). In this study, the model considers SOA production from terpenes, isoprene, and aromatics in biogenic/anthropogenic emissions (103, 400, and 18 TgC yr-1, respectively). The simulated SOA concentrations are generally consistent with the observations in the tropics, but significantly underestimated in comparison with the observations in the mid-high latitudes in the northern hemisphere. The global SOA production is estimated at 25 Tg yr-1, mainly from isoprene oxidation with OH (~60%) and terpenes oxidation with O3 and NO3 (15 and 13%, respectively). This study also suggests that the past SOA changes due to the land use change (during the 20th century) can cause a very large positive radiative forcing (~0.4 W m-2) through direct and indirect effects.

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© 2012 日本エアロゾル学会
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