2005 Fiscal Year Final Research Report Summary
Investigation and Analysis on Dynamics of atmospheric stable layer and air pollution formed by Kathmandu valley
| Project/Area Number |
15404002
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 海外学術 |
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| Research Field |
Environmental dynamic analysis
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| Research Institution | Osaka University |
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Principal Investigator |
KONDO Akira Osaka University, Graduate school of Engineering, Associate professor, 大学院・工学研究科, 助教授 (20215445)
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| Co-Investigator(Kenkyū-buntansha) |
KAGA Akikazu Osaka University, Graduate school of Engineering, Professor, 大学院・工学研究科, 教授 (90029265)
INOUE Yoshio Osaka University, Graduate school of Engineering, Assistant professor, 大学院・工学研究科, 助手 (60203262)
TAKENAKA Norimichi Osaka Prefecture University, Engineering, Associate professor, 工学部, 助教授 (70236488)
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| Project Period (FY) |
2003 – 2005
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| Keywords | Kathmandu valley / Atmospheric pollutant / Atmospheric stability / Nitrogen oxide / TSP / Oxidant / Sulfur oxide / Inverse layer |
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| Research Abstract |
The dimensionless parameters dominant in the flow and diffusion field in the Kathmandu Valley were derived from the numerical simulation. The water tank experiment in the Kathmandu valley using the dimensionless parameters was conducted. The experimental results generally agreed with the numerical simulations. The continuation measurements of NOx concentration, TSP concentration, and oxidant concentration were carried out at the roof in Tribhuwan University. VOC compounds at 10 places in the Kathnamdu valley were also measured. The amount of VOC emissions was presumed from these analysis results. The amounts of NOx emissions and of TSP emissions were presumed from reference data in consideration of the increase of traffic volume. Using these emission data, atmospheric pollutant concentrations were calculated by one box model with two layers, and agreed with the measurement concentrations.
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