Amount and State of Mineral Particles in the Upper Mixed Layer and the Lower Free Troposphere over Mt. Raizan, Southwestern Japan: Unmanned Airplane Measurements in the Spring of 2003

• YAMASHITA Katsuya

  Department of Earth System Science, Graduate School of Science, Fukuoka University

• HAYASHI Masahiko

  Department of Earth System Science, Faculty of Science, Fukuoka University

• IRIE Mayu

  Department of Earth System Science, Faculty of Science, Fukuoka University

• YAMAMOTO Kazumi

  Department of Earth System Science, Faculty of Science, Fukuoka University

• SAGA Katsumi

  Department of Earth System Science, Graduate School of Science, Fukuoka University

• ASHIDA Masami

  Department of Earth System Science, Graduate School of Science, Fukuoka University

• SHIRAISHI Kouichi

  Department of Earth System Science, Faculty of Science, Fukuoka University

• OKABE Kazuo

  Sky Remote Co., Ltd, Kumamoto

抄録

In-situ observations and sampling of aerosol particles from 800 to 2000 m altitude, the upper mixed layer and lowermost free troposphere, were carried out over Mt. Raizan (Fukuoka, Japan) in the spring of 2003 using an optical particle counter and a cascade impactor borne in an unmanned radio-controlled airplane. In the mixed layer, mineral particles, sea salt particles, as well as the mixture of the two were dominant among the coarse particles, whereas sulfate particles dominated the fine particles. In the free troposphere, mineral particles dominated both the coarse and fine particles.<br>The volume concentrations of particles including mineral constituents were derived using the number concentration and the composition of aerosol particles. The volume concentrations of particles including mineral constituents in the mixed layer and free troposphere were estimated to be 9.7 × 10⁻⁶−7.7 × 10⁻⁵ cm³ m⁻³ and 1.4 × 10⁻⁶−5.2 × 10⁻⁶ cm³ m⁻³, respectively.<br>The number fractions of mineral particles mixed with sea salt of all the mineral particles in the mixed layer were much higher than those in the free troposphere. These results suggest that mineral particles mixed with sea salt were formed in the marine boundary layer. The weather record suggests that the formation process through the clouds, which has previously been considered an eflicient formation process for mixed particles, cannot explain sufficiently the observed abundance of mineral particles internally mixed with sea salt.

収録刊行物

• 気象集誌. 第2輯

  気象集誌. 第2輯 83A 121-136, 2005

  公益社団法人 日本気象学会

キーワード

• Atmospheric Science

詳細情報

• CRID: 1390282681480546560
• NII論文ID: 110001817419
• NII書誌ID: AA00702524
• DOI: 10.2151/jmsj.83a.121
• ISSN: 21869057
• ISSN: 00261165
• NDL書誌ID: 7317256
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I7317256
• Web Site: http://www.jstage.jst.go.jp/article/jmsj/83A/0/83A_0_121/_pdf
• Web Site: http://dl.ndl.go.jp/info:ndljp/pid/10612456
• 本文言語コード: en
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • NDL-Digital
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可