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Hygroscopicity and cloud condensation nucleus activity of forest aerosol particles during summer in Wakayama, Japan
http://hdl.handle.net/2237/26613
http://hdl.handle.net/2237/266130c087dc2-f3b1-4d82-8ea2-481b84f17c30
| 名前 / ファイル | ライセンス | アクション |
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jgrd53692-sup-0001-SI_kawana_0307.pdf ファイル公開：2017/09/16 (1.2 MB)
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Kawana_et_al-2017-Journal_of_Geophysical_Research_Atmospheres.pdf ファイル公開：2017/09/16 (4.1 MB)
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| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2017-06-09 | |||||
| タイトル | ||||||
| タイトル | Hygroscopicity and cloud condensation nucleus activity of forest aerosol particles during summer in Wakayama, Japan | |||||
| 言語 | en | |||||
| 著者 |
Kawana, Kaori
× Kawana, Kaori× Nakayama, Tomoki× Kuba, Naomi× Mochida, Michihiro |
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| アクセス権 | ||||||
| アクセス権 | open access | |||||
| アクセス権URI | http://purl.org/coar/access_right/c_abf2 | |||||
| 権利 | ||||||
| 言語 | en | |||||
| 権利情報 | © 2017 American Geophysical Union | |||||
| 抄録 | ||||||
| 内容記述 | Size-resolved distributions of the hygroscopic growth factor (g) and the ratios of cloud condensation nuclei (CCN) to condensation nuclei were observed at a forest site during summer in Japan. The g distributions at 85% relative humidity were unimodal. During 0900–2100 Japan Standard Time (JST) on new particle formation (NPF) event days, less hygroscopic particles (g ~ 1.1) were dominant in the Aitken-mode range and the CCN activation diameters of the aerosols were large. These results are explained by the substantial contribution from newly formed biogenic secondary organic aerosol (BSOA). Hygroscopicity parameter κ for newly formed Aitken particles, calculated from g and CCN activation diameters, were 0.12 and 0.16, respectively, which were estimated to be the κ of organics. The κ values of particles were higher during 2100–0900 JST on NPF event days, in which the aerosols were characterized by the dominance of large and more hygroscopic particles. The number fractions of CCN that were predicted from time- and size-resolved g at 0.23% and 0.41% supersaturations better matched the measured values compared to the cases with the time-averaged g and/or g for the bulk composition, which suggests that the differences in particle hygroscopicity with time and size are important to CCN activation. A cloud parcel model indicates that the contributions from less hygroscopic particles to the number concentrations of CCN and cloud droplets were potentially large during NPF event days, which suggests a marked contribution from locally formed BSOA particles alongside particles from background air. | |||||
| 言語 | en | |||||
| 内容記述タイプ | Abstract | |||||
| 出版者 | ||||||
| 言語 | en | |||||
| 出版者 | Wiley | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| 資源タイプ | ||||||
| 資源タイプresource | http://purl.org/coar/resource_type/c_6501 | |||||
| タイプ | journal article | |||||
| 出版タイプ | ||||||
| 出版タイプ | VoR | |||||
| 出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||
| DOI | ||||||
| 関連タイプ | isVersionOf | |||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | https://doi.org/10.1002/2016JD025660 | |||||
| ISSN | ||||||
| 収録物識別子タイプ | PISSN | |||||
| 収録物識別子 | 2169-897X | |||||
| 書誌情報 |
en : Journal of Geophysical Research-Atmospheres 巻 122, 号 5, p. 3042-3064, 発行日 2017-03-16 |
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| 著者版フラグ | ||||||
| 値 | publisher | |||||
| URI | ||||||
| 識別子 | http://doi.org/10.1002/2016JD025660 | |||||
| 識別子タイプ | DOI | |||||
| URI | ||||||
| 識別子 | http://hdl.handle.net/2237/26613 | |||||
| 識別子タイプ | HDL | |||||
