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  1. D300 大学院環境学研究科
  2. D300a 雑誌掲載論文
  3. 学術雑誌

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/2237/26613
0c087dc2-f3b1-4d82-8ea2-481b84f17c30
名前 / ファイル ライセンス アクション
jgrd53692-sup-0001-SI_kawana_0307.pdf jgrd53692-sup-0001-SI_kawana_0307.pdf ファイル公開:2017/09/16 (1.2 MB)
Kawana_et_al-2017-Journal_of_Geophysical_Research_Atmospheres.pdf Kawana_et_al-2017-Journal_of_Geophysical_Research_Atmospheres.pdf ファイル公開:2017/09/16 (4.1 MB)
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

WEKO 72303

en Kawana, Kaori

Search repository
Nakayama, Tomoki

× Nakayama, Tomoki

WEKO 72304

en Nakayama, Tomoki

Search repository
Kuba, Naomi

× Kuba, Naomi

WEKO 72305

en Kuba, Naomi

Search repository
Mochida, Michihiro

× Mochida, Michihiro

WEKO 72306

en Mochida, Michihiro

Search repository
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
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
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