Continuous Monitoring of the Methane Concentration in the Urban Atmosphere of Nagoya, 1990-1993.

• AIKAWA Masahide

  Department of Applied Chemistry, School of Engineering, Nagoya University

• AOTSUKA Fuyuki

  Department of Applied Chemistry, School of Engineering, Nagoya University

• YOSHIKAWA Kazuhiro

  Department of Applied Chemistry, School of Engineering, Nagoya University

• TOMIDA Michio

  Department of Applied Chemistry, School of Engineering, Nagoya University

• TAKEUCHI Toyohide

  Department of Applied Chemistry, School of Engineering, Nagoya University

• HARACUCHI Hiroki

  Department of Applied Chemistry, School of Engineering, Nagoya University

抄録

Continuous monitoring of the atmospheric concentration of methane (CH₄) has been carried out since August, 1990, in Nagoya, which is one of the typical urban areas of Japan. The atmospheric CH₄ concentration in Nagoya has shown some characteristic seasonal oscillations and daily changes; the CH₄ concentration was generally lower in the summer and higher in the winter; it was also relatively lower during the day and higher during the night. The annual mean concentration was 1.94ppmv in 1991, 1.93ppmv in 1992 and 1.98ppmv in 1993. These values are higher than the global average (1.72ppmv) reported by IPCC (1990), or the average in the northern hemisphere. The annual rate of increase for the last three years (from January, 1991, to December, 1993) was 2.78×10^-2ppmv/year, which corresponds to 1.4%/year. This rate of increase is also larger than that given in the IPCC report (0.9%) in 1990. These results suggest that there are some possible emission sources of CH₄ in the urban area of Nagoya. Furthermore, structural changes of the urban atmosphere should be taken into consideration when explaining the daily changes as well as the seasonal oscillation of methane.

収録刊行物

• Analytical Sciences

  Analytical Sciences 11 (3), 349-356, 1995

  社団法人 日本分析化学会

キーワード

• Methane
• urban atmosphere
• continuous monitoring
• daily change
• annual variation

詳細情報

• CRID: 1390282679229934464
• NII論文ID: 130003416517
• NII論文ID: 30031574410
• DOI: 10.2116/analsci.11.349
• COI: 1:CAS:528:DyaK2MXmtlSrsL8%3D
• ISSN: 13482246
• ISSN: 09106340
• Web Site: https://link.springer.com/content/pdf/10.2116/analsci.11.349.pdf
• Web Site: https://link.springer.com/article/10.2116/analsci.11.349/fulltext.html
• Web Site: http://www.jstage.jst.go.jp/article/analsci1985/11/3/11_3_349/_pdf
• 本文言語コード: en
• データソース種別:
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  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可