traffic pollution model Articles

  • Modelling of air pollution from road traffic

    This paper presents the basic principles of the method of calculating air pollution from road traffic in an urban built-up area. The algorithm of the method is based on the numerical integration of stationary two-dimensional partial differential equations of turbulent diffusion, with boundary conditions for the street canyons. The method consists of two modules: KALIB and STREETS, which calculate ...


    By Inderscience Publishers

  • Traffic pollution modelling in a complex urban street

    This study explores for the first time, the applicability of the Danish Operational Street Pollution Model (OSPM) in the city of Buenos Aires where street canyons are very irregular. The model is applied in an irregular and asymmetric street canyon of a five–lane avenue near a street intersection. Urban background concentrations estimated by the DAUMOD model are considered. Meteorological ...


    By Inderscience Publishers

  • Air quality management - from traffic management to environmental traffic management

    Traffic management systems are commonly used to optimize traffic flow in urban areas, e.g. to prevent traffic congestion. However, the regulation of traffic flows can also be used to control traffic induced emissions and therefore affects air quality. To use a traffic management system as an instrument for the benefit of air quality, the application requires reliable information about the current ...


    By IVU Umwelt GmbH

  • Using a calculation model to prevent serious air pollution from traffic

    The municipality of Utrecht has ten years of experience with exceeding the pollution limit values for NO2 and benzene, and offering advice for traffic plans on the effects of air pollution. Utrecht promotes prevention and integration of environmental issues in traffic plans and town planning. Utrecht has widened the use of the Dutch air pollution model for traffic (CAR) to prevent new exceeding ...


    By Inderscience Publishers

  • A quantitative approach to the traffic air quality problem: the traffic air quality index

    The Traffic Air Quality (TAQ) model is a simple tool to estimate traffic fine particulate emissions on roadways (g/km) and can be used for both real-time analysis and for localized conformity analysis (“hot-spot” analysis for nonattainment areas) as defined by 40 CFR 93.123. This paper is a follow-up to a study published earlier regarding the development of the TAQ model. This paper shows how ...

  • ADMS-Urban: an air quality management system for traffic, domestic and industrial pollution

    The new version of the Atmospheric Dispersion Modelling System for urban environments, ADMS-Urban, is based on the same up-to-date physics as the ADMS model, outlined briefly here in Section 2. The basic model has been the subject of extensive validation studies: as part of this series of European Harmonisation Workshops; sponsored by HMIP (Her Majesty's Inspectorate of Pollution, now part of the ...


    By Inderscience Publishers

  • Modelling street canyon pollution: model requirements and expectations

    Dispersion of pollution from traffic in urban street canyons is governed by a complex wind flow structure, which hardly can be described by traditional Gaussian models. On the other hand, some simple rules can be used to provide rough estimates of pollution levels, especially considering the worst-case conditions. The model requirements will thus also depend on the particular application and the ...


    By Inderscience Publishers

  • A comprehensive numerical simulation of traffic pollution in a street during one diurnal cycle

    A numerical simulation of the traffic pollutant transport diffusion within one busy street of Nantes city centre has been realised for a real-time duration of 24 hours, with a time step of 20 ms, in low wind, sunny conditions. It has been generated with the urban canopy model CHENSI, which includes sub-models of thermal buoyancy, traffic emission rates, car induced turbulence. A number of frames ...


    By Inderscience Publishers

  • Simple modelling approaches to assess the impact of traffic air pollution: Cordoba case study

    From 1991 to 1999, there were significant commitments to environmental protection in Argentina. During this period, several important cities of the country, such as Buenos Aires, Cordoba, Mendoza, Bahia Blanca, and Ushuaia, began air quality monitoring programmes. Among these cities, we have taken Cordoba as a case study because of the existence of a continuous monitoring campaign that collected ...


    By Inderscience Publishers

  • Children’s exposure to traffic-related pollution: assessment of CO exposure in a typical school day

    This paper evaluates the exposure of four children to carbon monoxide (CO) in two different classrooms during the time spent in school in a typical school day, using a numerical modelling approach. The study is focused on an area of 550 × 550 m 2 centred at a primary school of the city of Aveiro, in central Portugal, which is located close to a road with moderate traffic and has naturally ...


    By Inderscience Publishers

  • Lisbon air quality: evaluating traffic hot-spots

    This paper presents an air quality study in an urban traffic hot-spot in Lisbon, Portugal, by comparing the atmospheric pollutant concentrations obtained by a numerical model with measured values. Results indicate that the mean variation of particle and gaseous concentrations followed the traffic flow rate, evidencing the occurrence of PM10 concentrations greater than the respective air quality ...


    By Inderscience Publishers

  • Modelling of air pollution in the area of Algiers City, Algeria

    Algiers is the political and economic capital of Algeria. The city drains a large part of the activities of the country with intense road traffic. This road traffic is the main source of air pollution, followed by industry and waste combustion. An application of the new road traffic emission model, called EMISENS, is performed to build road traffic emission inventories for the Algiers region. ...


    By Inderscience Publishers

  • Particulate matter dispersion modelling along urban traffic paths

    In this paper authors compare two different approaches of 10 μm particles (PM10) dispersion modelling in urban areas. The study is focused on comparison of the Eulerian-Lagrangian approach accurately describing particle aerodynamics and the passive scalar approach representing simplified alternative for description of dispersion processes. CFD code StarCD has been used for this study as ...


    By Inderscience Publishers

  • Numerical model of urban aerodynamics and pollution dispersion

    For analysis of atmospheric processes in the urban environment, the microscale meteorological and dispersion model M2UE is suggested, which takes into account a complex character of aerodynamics in non-uniform urban relief. The three-dimensional version of the model includes a system of Reynolds equations, two-equation k-ε model of turbulence and the 'advection-diffusion' equation to simulate ...


    By Inderscience Publishers

  • Vehicle wake factor for heterogeneous traffic in urban environments

    Vehicles' 'wakes' are generated as a result of vehicular movements. They are one of the dominant factors in dispersing the pollutants in 'calm' meteorological conditions when wind velocity is ...


    By Inderscience Publishers

  • Measuring Road Traffic Noise

    As part of an overall measurement programme to monitor road traffic noise in Århus (Denmarks second largest city), the Local Authority set up a noise measurement station on one of the major approach roads to Århus Harbour. This noise measurement station continually measures noise levels and can give a round-the-clock picture of noise level variations. Like most other districts, Århus Local ...

  • Modelling the meteorology and traffic pollutant dispersion in highly complex terrain: the ALPNAP Alpine Space Project

    An integrated methodology was applied, within the framework of the ALPNAP Project, to study the meteorology and traffic pollutant dispersion in highly complex topography, the Frejus Alpine transect area. Three episodes, characterised by strongly critical dispersive conditions, were considered in the year 2004. The atmospheric circulation and pollutant dispersion were simulated using RMS ...


    By Inderscience Publishers

  • Dispersion modelling of traffic particulate matter in city–scale area

    This paper introduces utilisation of the CFD technique for modelling of PM10 (particulate matter 10 µm) dispersion in urban areas, with focus on detailed description of processes in the ground surface boundary layer. The description of deposition and re–suspension processes is introduced and applied on the city–scale model of the city of Brno (pop. 400,000). The air threshold ...


    By Inderscience Publishers

  • Assessment of air pollution in the conurbation of Munich: present and future

    Traffic emissions have a severe impact to the environment with all its socio-economic consequences in urban conglomerations. Traffic emissions will still increase in the future, whereas other categories of emissions will decrease within the next years. Numerical simulations are a useful tool to assess the effect of different emissions on the regional air quality of primary and secondary ...


    By Inderscience Publishers

  • Modelling of vehicle-induced turbulence in air pollution studies for streets

    Vehicle-induced turbulence can be an important factor of pollutant dispersion in urban areas, especially under conditions of low wind speeds which are typical for street canyons. An experimental concept (Plate, 1982) for modelling the effects of vehicle-induced turbulence was applied in the present study. The movement of vehicles was simulated in a boundary-layer wind tunnel by small metal plates ...


    By Inderscience Publishers

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