Classify causes for high concentrations of photochemical oxidant in Fukuoka Prefecture
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概要
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Trends in concentration of photochemical oxidant has recently been increased. Oxidant concentration sometimes exceed the photochemical smog advisory level (120ppb (v/v)) in Fukuoka prefecture.<BR>Then, the oxidant high concentration days (from 2003 to 2007) are extracted to estimate sources. It is said that high oxidant concentration are caused by generation in local area, the transportation from the continent and tropospheric intrusion of the stratospheric ozone. If we can get data such as backward trajectory, sulfate concentration at Fukuoka and oxidant data in Tsushima or Iki island where is the background measurement site located between Kyushu and the continent, we are able to specify the main factor in some cases on a high concentration days though influence of each factor combines. When the strong influence was classified, it was estimated at over 30% transportation from the continent. The ratio of transportation from the continent is slightly increasing.
- 社団法人 大気環境学会の論文
社団法人 大気環境学会 | 論文
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