Analysis of full-scale data obtained in a street canyon
In urban areas high air pollutant concentrations may be observed, mostly within street canyons, where buildings and other obstacles disturb the airflow and turbulence. Air motions inside the street canyons are influenced by aerodynamic and thermal effects and by the movements of the vehicles. In thi...
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2007
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01876236_v20_n1_p93_Mazzeo http://hdl.handle.net/20.500.12110/paper_01876236_v20_n1_p93_Mazzeo |
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paper:paper_01876236_v20_n1_p93_Mazzeo2023-06-08T15:19:41Z Analysis of full-scale data obtained in a street canyon Street canyons Traffic pollution Urban air quality air quality atmospheric pollution carbon monoxide nitrogen oxides street canyon traffic emission urban atmosphere Central Europe Eurasia Europe Germany Hannover Lower Saxony In urban areas high air pollutant concentrations may be observed, mostly within street canyons, where buildings and other obstacles disturb the airflow and turbulence. Air motions inside the street canyons are influenced by aerodynamic and thermal effects and by the movements of the vehicles. In this article, we analyze hourly CO and NOx concentrations measured at 1.5 m height on the west side of a street canyon of Göttinger Strasse in Hannover (Germany) and background CO and NOx, wind speed and direction that have been measured on the roof of a nearby building. Information of traffic flow in the street is also available. Results show the presence of a vortex cell inside the street canyon when the ambient wind is greater than 1.8 m/s and is mainly perpendicular to the street axis. We evaluated of the relative influence of ambient and traffic-induced turbulences on local concentrations inside the canyon. The results show that traffic-induced turbulence becomes important when the wind is lower than 2 m/s. 2007 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01876236_v20_n1_p93_Mazzeo http://hdl.handle.net/20.500.12110/paper_01876236_v20_n1_p93_Mazzeo |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Street canyons Traffic pollution Urban air quality air quality atmospheric pollution carbon monoxide nitrogen oxides street canyon traffic emission urban atmosphere Central Europe Eurasia Europe Germany Hannover Lower Saxony |
| spellingShingle |
Street canyons Traffic pollution Urban air quality air quality atmospheric pollution carbon monoxide nitrogen oxides street canyon traffic emission urban atmosphere Central Europe Eurasia Europe Germany Hannover Lower Saxony Analysis of full-scale data obtained in a street canyon |
| topic_facet |
Street canyons Traffic pollution Urban air quality air quality atmospheric pollution carbon monoxide nitrogen oxides street canyon traffic emission urban atmosphere Central Europe Eurasia Europe Germany Hannover Lower Saxony |
| description |
In urban areas high air pollutant concentrations may be observed, mostly within street canyons, where buildings and other obstacles disturb the airflow and turbulence. Air motions inside the street canyons are influenced by aerodynamic and thermal effects and by the movements of the vehicles. In this article, we analyze hourly CO and NOx concentrations measured at 1.5 m height on the west side of a street canyon of Göttinger Strasse in Hannover (Germany) and background CO and NOx, wind speed and direction that have been measured on the roof of a nearby building. Information of traffic flow in the street is also available. Results show the presence of a vortex cell inside the street canyon when the ambient wind is greater than 1.8 m/s and is mainly perpendicular to the street axis. We evaluated of the relative influence of ambient and traffic-induced turbulences on local concentrations inside the canyon. The results show that traffic-induced turbulence becomes important when the wind is lower than 2 m/s. |
| title |
Analysis of full-scale data obtained in a street canyon |
| title_short |
Analysis of full-scale data obtained in a street canyon |
| title_full |
Analysis of full-scale data obtained in a street canyon |
| title_fullStr |
Analysis of full-scale data obtained in a street canyon |
| title_full_unstemmed |
Analysis of full-scale data obtained in a street canyon |
| title_sort |
analysis of full-scale data obtained in a street canyon |
| publishDate |
2007 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01876236_v20_n1_p93_Mazzeo http://hdl.handle.net/20.500.12110/paper_01876236_v20_n1_p93_Mazzeo |
| _version_ |
1768542835364069376 |