A high resolution atmospheric emissions inventory for road vehicle sources and teh factors influencing its accuracy and sensitivity

摘要

This paper discusses the factors tht need to be considered when develpoing a high resolution 1x1 km~2 emissions inventory and describes their application to a 625 km~2 area within Hertfordshire, UK. The emissions of CO and NO_x from motor vehicles are estimated by 5 classes of vehicle and 5 different road types. An assessment is made of the proportions of emissions within urban and urral areas together with those created by cold starts. Trends in emissions for the years 200 and 2005 are estimated. The high levels of CO emissions from urban driving and cold starts are identified and the level of reductions achievable from the use of three way catalysts are discussed. The uncertainties in the data and their sensitivity to the results are considered and quantified.