Urban traffic particulate matter emission estimation method

Abstract

The invention relates to an urban traffic particulate matter emission estimation method. The urban traffic particulate matter emission estimation method includes the following steps that satellite images are selected and processed, an urban road network is processed through remote sensing interpretation, the dust load coefficients of urban roads are measured, a traffic particulate matter emission factor is calculated through simulation, and the traffic particulate matter emission is measured and calculated. The urban traffic particulate matter emission estimation method has the advantages that through the method, the remote sensing technology and the ground on-site monitoring and simulation analysis technology can be effectively combined; through the remote sensing technology, the characteristics of the urban traffic road network under different spatial and temporal scales can be fast and accurately acquired, and the defect that the overall conditions of the particulate matter emission of the road network cannot be reflected at fixed points on the ground can be compensated for. The advantages of high update, wide range, strong objectivity and the like of remote sensing are combined with the ground on-site monitoring and simulation analysis technology, for traffic particulate matter, the urban traffic particulate matter emission can be estimated, and first-hand data can be provided for control over the total amount of air pollutant emission.

Description

technical field [0001] The invention belongs to the field of atmospheric environment monitoring, and in particular relates to a method for estimating the emission of urban traffic particles. Background technique [0002] According to the PM released by the Beijing Municipal Environmental Protection Bureau in April 2014 2.5 The latest results of source analysis show that Beijing's annual PM 2.5 Among the sources, local sources contribute 64%-72%, while motor vehicle emissions of PM 2.5 31.1% of local sources. Urban traffic emissions are one of the main sources of urban atmospheric particulate matter. From a national perspective, in recent years, the urban areas of major cities have continued to expand, roads have expanded rapidly, and the number of motor vehicles has continued to increase significantly, which has also aggravated the degree of heavy air pollution. Carrying out total traffic pollution discharge control is one of the important ways of urban atmospheric envir...

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Problems solved by technology

However, the urban traffic system itself is complex and variable, such as the high degree of heterogeneity in the temporal and spatial distribution of roads of different grades, the difference and change of traffic flow on different grades of roads, etc., and it is difficult to accurately and accurately measure the traffic volume on a large scale by only using fixed-point monitoring methods. Quantitative assessment of overall particulate matter emissions from urban traffic

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