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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

Assessment of cloud condensation nucleus activation of urban aerosol particles with different hygroscopicity and the application to the cloud parcel model

http://hdl.handle.net/2237/26615
0b90e800-e106-4751-9f6e-f12fe2bdd46a
名前 / ファイル ライセンス アクション
Auxiliary_material_kawana_0210.pdf Auxiliary_material_kawana_0210.pdf (1.9 MB)
Kawana_et_al-2014-Journal_of_Geophysical_Research_Atmospheres.pdf Kawana_et_al-2014-Journal_of_Geophysical_Research_Atmospheres.pdf (2.2 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 Assessment of cloud condensation nucleus activation of urban aerosol particles with different hygroscopicity and the application to the cloud parcel model
著者 Kawana, Kaori

× Kawana, Kaori

WEKO 72311

Kawana, Kaori

Search repository
Kuba, Naomi

× Kuba, Naomi

WEKO 72312

Kuba, Naomi

Search repository
Mochida, Michihiro

× Mochida, Michihiro

WEKO 72313

Mochida, Michihiro

Search repository
権利
権利情報 © 2014 American Geophysical Union
抄録
内容記述 Size-resolved measurements of the ratios of cloud condensation nuclei (CCN) to condensation nuclei for particles with different hygroscopic growth factors (g) and distributions of g at 85% relative humidity were performed for urban aerosols over Nagoya, Japan. The CCN efficiency spectra of less hygroscopic particles (g of 1.0 and 1.1) were very different from those of more hygroscopic particles (g of 1.25 and 1.4). While the differences between the CCN activation diameters predicted from g (dact,g85) and those measured (dact,CCN) were within 12% for more hygroscopic particles, the differences were larger (16%–41%) for less hygroscopic particles. Possible causes of this included surface tension reduction, the dependence of κ on the concentration of the solution, the existence of sparingly soluble materials, and asphericity of particles. The number concentrations of CCN (NCCN) and cloud droplets (Ncd) and the effective radius of cloud droplets (Reff) were estimated from the distributions of g using a cloud parcel model. The influences of the differences between dact,g85 and dact,CCN and the existence of CCN-inactive particles on the model assessment were small. With high updraft velocity, incorporating both less and more hygroscopic particles into the model led to substantial increases in NCCN and Ncd and a decrease in Reff as compared to the hypothetical cases that only more hygroscopic particles were present. The results indicated that less hygroscopic particles significantly contribute to cloud droplet formation and assessments of g distributions are useful in this regard.
内容記述タイプ Abstract
出版者
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
ISSN
収録物識別子タイプ ISSN
収録物識別子 2169-897X
書誌情報 Journal of Geophysical Research-Atmospheres

巻 119, 号 6, p. 3352-3371, 発行日 2014-03-27
著者版フラグ
値 publisher
URI
識別子 http://doi.org/10.1002/2013JD020827
識別子タイプ DOI
URI
識別子 http://hdl.handle.net/2237/26615
識別子タイプ HDL
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