Technical Paper
Japan Clean Air Program (JCAP): Preliminary Modeling Study of Vehicle Emission Impacts on Air Quality
1999-05-03
1999-01-1482
Following results are cleared. 1) UAM and CIT program have the potential to predict the urban air quality in Tokyo area. 2) Major Hydrocarbon source in Tokyo area is from the painting, the contribution from vehicles is less than 10 %. 3) For the NOx emission, around 35 to 40 % of the total emission is caused by vehicles, especially Diesel. 4) Reduction of NOx emission is effective for the improvement of ozone concentrations 4) Reduction of maximum ozone concentration less than 60 ppb seems to be very hard.
