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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 CCN activity of atmospheric aerosol particles and their relation to organics: Characteristics of urban aerosols in Nagoya, Japan

http://hdl.handle.net/2237/26614
http://hdl.handle.net/2237/26614
d2cddc79-971b-4a9e-a43b-54b61d092da5
名前 / ファイル ライセンス アクション
jgrd52914-sup-0001-SI.pdf jgrd52914-sup-0001-SI.pdf (2.1 MB)
Kawana_et_al-2016-Journal_of_Geophysical_Research_Atmospheres.pdf Kawana_et_al-2016-Journal_of_Geophysical_Research_Atmospheres.pdf (2.4 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 CCN activity of atmospheric aerosol particles and their relation to organics: Characteristics of urban aerosols in Nagoya, Japan
言語 en
著者 Kawana, Kaori

× Kawana, Kaori

WEKO 72308

en Kawana, Kaori

Search repository
Nakayama, Tomoki

× Nakayama, Tomoki

WEKO 72309

en Nakayama, Tomoki

Search repository
Mochida, Michihiro

× Mochida, Michihiro

WEKO 72310

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 © 2016 American Geophysical Union
抄録
内容記述 The size-resolved distributions of hygroscopic growth factor g and the ratios of cloud condensation nuclei (CCN) to condensation nuclei of atmospheric aerosols were investigated in Nagoya, Japan. The average of the distributions of g at 85% relative humidity was bimodal. The size-resolved mean κ derived from g showed an increasing trend with diameter: 0.17–0.33 at 24–359 nm. The κ values calculated from CCN activation curves were 37% higher than those derived from g. Only 9% of the 37% difference is explained by the difference in the κ of inorganics under subsaturated and supersaturated conditions, suggesting a contribution of organics to the remaining 28% difference. The size-averaged κ of organics (κorg) was calculated as 0.14 and 0.19 by two different methods. The number fractions of CCN predicted from the hygroscopicity data over the range of 24–359 nm are loosely consistent with those observed if the size- and time-averaged g is applied to all particles (differences: −30% to +10%). This consistency improves if size- and time-resolved g and g distribution are used (differences: −19% to −3%). Whereas the number fractions of CCN predicted from the composition data are greatly underestimated if organics are assumed to be insoluble (differences: −64% to −45%), they are more consistent if κorg of 0.14 or 0.19 is applied (differences: −10% to +14%). The results demonstrate the importance of the dependence of the g of particles on time and particle size and the hygroscopicity of organics for CCN number concentrations in the urban atmosphere.
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/10.1002/2015JD023213
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 121, 号 8, p. 4100-4121, 発行日 2016-04-27
著者版フラグ
値 publisher
URI
識別子 http://doi.org/10.1002/2015JD023213
識別子タイプ DOI
URI
識別子 http://hdl.handle.net/2237/26614
識別子タイプ HDL
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