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Vertical distribution of cloud condensation nuclei concentrations and their effect on microphysical properties of clouds over the sea near the southwest islands of Japan
http://hdl.handle.net/2261/51890
http://hdl.handle.net/2261/5189067e21dec-4f5d-47f0-adff-dc208abbee17
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
Nakajima2005JGRA_H24P103.pdf (708.1 kB)
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| Item type | 学術雑誌論文 / Journal Article(1) | |||||
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| 公開日 | 2017-01-10 | |||||
| タイトル | ||||||
| タイトル | Vertical distribution of cloud condensation nuclei concentrations and their effect on microphysical properties of clouds over the sea near the southwest islands of Japan | |||||
| 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 |
Adhikari, M.
× Adhikari, M.× Ishizaka, Y.× Minda, H.× Kazaoka, R.× Jensen, J. B.× Gras, J. L.× Nakajima, T. |
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| 著者所属 | ||||||
| 著者所属 | Hydrospheric Atmospheric Research Center, Nagoya University | |||||
| 著者所属 | ||||||
| 著者所属 | Atmospheric Research Division, Commonwealth Scientific and Industrial Research Organisation | |||||
| 著者所属 | ||||||
| 著者所属 | Center for Climate System Research, University of Tokyo | |||||
| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | Aircraft observations were performed over the sea near the southwest islands of Japan under Asian Atmospheric Particulate Environmental Change Experiment 2/Asian Pacific Regional Aerosol Characterization Experiment (APEX-E2/ACE-Asia) project during the period of 16-28 April 2001. The polluted air mass from east Asia was associated with very high concentrations of SO2 (1-10 ppb) and aerosol particles (3000-5000 cm(-3)) in the marine boundary layer. The cloud condensation nuclei (CCN) concentration at 0.3% supersaturation was as high as 800-2000 cm(-3) during the penetrations of air pollutants from east Asia. The correlation coefficient between SO2 and aerosol particles was significant in such polluted atmosphere. Concentration of CCN (NCCN) was linearly related to concentration of aerosol particles (NAP) according to NCCN～0.75NAP. The ratio of CCN to aerosol condensation nuclei particle concentrations was lower than 0.3 in the relatively clean maritime atmosphere, but it was as high as ～0.5 in the continentally influenced atmosphere in the boundary layer. These results indicated that the influence of anthropogenic pollutants from east Asia increased the contribution percentage of aerosol particles to CCN in the polluted atmosphere over the observation area. The observational results also indicated that a mean cloud droplet concentration (NC) in the continentally influenced clouds was ～2 times as much as NC in the relatively clean maritime clouds. The slope of log-log relationship between NC and NCCN was ～0.39. This study strongly suggests that high CCN concentration formed many cloud droplets and decreased their effective radius at similar liquid water content under the outflow of air pollutants from east Asia. | |||||
| 書誌情報 |
Journal of geophysical research. D 巻 110, 号 10, p. D10203, 発行日 2005-05-19 |
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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/10.1029/2004JD004758 | |||||
| 権利 | ||||||
| 権利情報 | Copyright 2005 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 | |||||
| 異版である | ||||||
| 関連タイプ | isVersionOf | |||||
| 識別子タイプ | URI | |||||
| 関連識別子 | http://doi.org/10.1029/2004JD004758 | |||||
