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A study of anthropogenic impacts of the radiation budget and the cloud field in East Asia based on model simulations with GCM
http://hdl.handle.net/2261/37059
http://hdl.handle.net/2261/37059acd56c35-702a-4b73-8df1-2dcd6d23da9e
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
2008_study.pdf (558.0 kB)
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| Item type | 学術雑誌論文 / Journal Article(1) | |||||
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| 公開日 | 2017-01-16 | |||||
| タイトル | ||||||
| タイトル | A study of anthropogenic impacts of the radiation budget and the cloud field in East Asia based on model simulations with GCM | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| 資源タイプ | ||||||
| 資源 | http://purl.org/coar/resource_type/c_6501 | |||||
| タイプ | journal article | |||||
| 著者 |
Mukai, Makiko
× Mukai, Makiko× Nakajima, Teruyuki× Takemura, Toshihiko |
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| 著者所属 | ||||||
| 著者所属 | Center for Climate System Research, University of Tokyo | |||||
| 著者所属 | ||||||
| 著者所属 | Research Institute for Applied Mechanics, Kyushu University | |||||
| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | We investigated the effects of man‐made air pollutants on the climate of East Asia, focusing on eastern China where anthropogenic aerosol concentrations are rapidly increasing. The increasing emission of anthropogenic aerosols causes serious air pollution episodes and various effects on the climate in this region. It is therefore necessary to quantify the contribution of aerosols to the change in the radiation budget and the cloud field. Our purpose of this study is to evaluate the sensitivity of anthropogenic aerosols and other anthropogenic factors such as greenhouse gas (GHG) upon the radiative forcing. Then an aerosol transport model coupled to a general circulation model and an ocean mixed‐layer model was used to investigate the relationships among the anthropogenic aerosol forcing, GHG forcing, surface radiation budget, and cloud field. Our simulation results showed that copious anthropogenic aerosol loading causes significant decrease in the surface downward shortwave radiation flux (SDSWRF), which indicates that a direct effect of aerosols has the greatest influence on the surface radiation. It is found from our model simulations that low‐level clouds increase but convective clouds decrease due to reduced convective activity caused by surface cooling when anthropogenic aerosol increases, and GHG increase has an insignificant effect on SDSWRF but a significant effect on the cloud field. In other word model simulations suggested that the aerosol forcing mainly causes a reduction of SDSWRF, whereas the change in the cloud field is influenced both anthropogenic aerosol and GHG effects. Thus this work demonstrated with sensitivity experiments the importance of aerosols to cause significant climate effects in the East Asian region, though further study is needed because our study is based on results from one specific model and limited data analysis. | |||||
| 書誌情報 |
Journal of geophysical research. D 巻 113, p. D12211, 発行日 2008-06-26 |
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| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 01480227 | |||||
| 書誌レコードID | ||||||
| 収録物識別子タイプ | NCID | |||||
| 収録物識別子 | AA10819765 | |||||
| DOI | ||||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | info:doi/10.1029/2007JD009325 | |||||
| 権利 | ||||||
| 権利情報 | Copyright 2008 by the American Geophysical Union | |||||
| 日本十進分類法 | ||||||
| 主題Scheme | NDC | |||||
| 主題 | 451 | |||||
| 出版者 | ||||||
| 出版者 | American Geophysical Union | |||||
| 関係URI | ||||||
| 識別子タイプ | URI | |||||
| 関連識別子 | http://www.agu.org/journals/jd/ | |||||
