A prototype of a micro-scale model for the distribution of NO2 in urban areas
| Autor: | Ignasi de-Pouplana, Salvador Latorre, Miguel Masó, Cristina Alonso, Eva Pérez, Xavier Guinart, Isabel Hernández, Xavier Baulies, Eugenio Oñate |
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| Přispěvatelé: | Universitat Politècnica de Catalunya. Departament de Resistència de Materials i Estructures a l'Enginyeria, Universitat Politècnica de Catalunya. Departament d'Enginyeria Civil i Ambiental, Universitat Politècnica de Catalunya. MMCE - Mecànica de Medis Continus i Estructures |
| Jazyk: | angličtina |
| Rok vydání: | 2023 |
| Předmět: |
Atmospheric Science
Engineering Civil Engineering Petroleum Micro-scale Finite element method Engineering Environmental Engineering Multidisciplinary 2.5D model Pollution Engineering Marine NO2 urban pollution Engineering Manufacturing Aire--Contaminació--Mesurament Engineering Industrial Traffic Engineering Geological Waste Management and Disposal Engineering Aerospace Air--Pollution potential Desenvolupament humà i sostenible::Degradació ambiental::Contaminació atmosfèrica [Àrees temàtiques de la UPC] |
| Popis: | We present a new 2.5D model for predicting the concentration of nitrogen dioxide (NO2) at street level in an urban area. This work develops the first prototype of a tool that should provide fast quantitative answers to help decision-making on the suitability of implementing traffic restrictions during air pollution episodes. The model first solves the wind flow over the city streets ignoring vorticity and turbulence. The obtained velocity field is used to transport the pollutant via a semi-Lagrangian model, combining the particle finite element method of second generation (PFEM2) with the finite element method. A variable absorption term is used to account for the part of the contaminant entering and leaving the calculation plane. The NO2 emissions are estimated from the historical traffic data. The model has been tested during four air pollution episodes in the city of Barcelona (Spain), two in summer and two in winter. A comparison against experimental measurements has been performed at seven different locations throughout the city with promising results. |
| Databáze: | OpenAIRE |
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