初夏期の富士山頂において観測されたエアロゾルの光吸収特性

• 兼保 直樹

  独立行政法人産業技術総合研究所

• 五十嵐 康人

  気象研究所

書誌事項

タイトル別名

• Light Absorption Characteristics of Atmospheric Aerosols Observed at the Summit of Mt. Fuji in Early Summer
• ショカキ ノ フジ サンチョウ ニ オイテ カンソクサレタ エアロゾル ノ ヒカリ キュウシュウ トクセイ

抄録

Spectral dependence of aerosol light absorption was measured on the summit of Mt. Fuji (3,776 m msl.) during the summer of 2005. Black carbon (BC) concentration showed diurnal variation with typical pattern of maximum occurring in daytime and minimum in early morning, suggesting the thermally induced transport from the planetary boundary layer (PBL) . The absorption coefficients of aerosols at each wavelength relative to the value of 520 nm showed slopes of about -0.9 against wavelength in log-log plot when the maximum concentrations occurred, which has been reported to be typical for the urban/industrial originated BC. When minimum concentrations of BC occurred, two types of slopes, one with the same slope of maximum concentration cases and the other with much steeper (∼-1.5) slope, were distinguished. The former can be regarded as diluted urban/industrial aerosols originated in the PBL, whereas the latter exhibited the characteristic of soil dust or biomass burning aerosols which are candidates of free-tropospheric aerosols in the Asian-Pacific rim region.

収録刊行物

• エアロゾル研究

  エアロゾル研究 22 (4), 318-321, 2007

  日本エアロゾル学会

キーワード

• Atmospheric Aerosol
• Black Carbon
• Light Absorption Coefficient
• Ångström Exponent
• Free Troposphere
• Diurnal Change

詳細情報

• CRID: 1390001204343104128
• NII論文ID: 10021918790
• NII書誌ID: AN10041511
• DOI: 10.11203/jar.22.318
• COI: 1:CAS:528:DC%2BD1cXhs1ehtr0%3D
• ISSN: 1881543X
• ISSN: 09122834
• NDL書誌ID: 9320943
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I9320943
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • NDL
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可