地表付近のエーロゾル粒子濃度に与える逆転層の影響

DOI

書誌事項

タイトル別名
  • The Effect of the Inversion Layer on Ambient Aerosol Particles Concentration Near the Ground Surface

抄録

The number concentration of ambient aerosol particles near the ground were measured and compared with the inversion layer in the central Tokyo in winter. The inversion layer was determined from the upper wind observation by using pilot balloons. Vertical profiles of aerosol particles were evaluated from the relation between inversion layer heights and concentrations near the su rface.<BR>Our analysis of the results clarified the followiings:<BR>(1) When the inversion layer was formed in winter, particles tend to increase irrespectively of their sizes. When the inversion layer disappears, however, the accompanied strong wind. frequently blows large particles off. This is the main reason why Aitken particle concentration shows the maximum in winter.<BR>(2) Mie particle concentration has a negative gradient profile and Aitken particle concentration has a nearly constant profile. The wind speed effect appears dominantly the vertical transport which makes the lower air mix with the upper air to yield low concentration of larger particles. Therefore Mie particles are selectively affected by the wind speed.

収録刊行物

  • 大気汚染学会誌

    大気汚染学会誌 25 (6), 386-394, 1990

    公益社団法人 大気環境学会

詳細情報 詳細情報について

  • CRID
    1390282679590272256
  • NII論文ID
    130003797269
  • DOI
    10.11298/taiki1978.25.6_386
  • ISSN
    21863695
    03867064
  • データソース種別
    • JaLC
    • CiNii Articles
  • 抄録ライセンスフラグ
    使用不可

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