Carbon Monoxide Concentration in a Street Canyon of Buenos Aires City (Argentina)

Abstract

The analysis of three years of 8-h CO concentration values registered in a deep street canyon downtown shows high frequency of values that exceed WHO health protection guidelines. An inverse relationship between opposing percentiles of the distributions of CO concentrations and mean wind speed could be found. Data also showed a variation of mean CO values with prevailing wind direction. The averaged concentration value obtained when the sampler probe is on the leeward side is lower than the obtained when it is on the windward wall. A preliminary explanation of this feature may be related to the advection of polluted air from a high traffic density area nearby.

Evaluation of an Emission Inventory and Air Pollution in the Metropolitan Area of Buenos Aires

“…At present, air pollutant concentrations are registered at the first three air quality monitoring stations of the network in the city (Venegas & Mazzeo, 2010b). The air quality in the city of Buenos Aires has been the subject of several studies carried out during the last years using different methodologies: analysis of data obtained from some measurement surveys of pollutants in urban air (Arkouli et al, 2010;Bocca et al, 2006;Bogo et al, 1999Bogo et al, , 2001Bogo et al, , 2003Mazzeo et al, 2005;Venegas & Mazzeo, 2000, 2003Vogt et al, 2007) and application of atmospheric dispersion models , 2006b, 2010a. In the Greater Buenos Aires, very few air quality measurements have been made (Fagundez et al, 2001; Japan International Cooperation Agency-Secretaría …”

Diffusion factors of street canyon pollutants in the cold winter of Xi’an city based on back propagation neural network analysis

“…Nelson et al 5 thought that the flow was influenced by uneven street canyons. Venegas and Mazzeo 6 found that the flow was influenced by asymmetrical urban street canyons. Since 1972, Deardorff 7,8 applied large eddy simulations (LESs) on the atmospheric boundary layer, using a turbulent kinetic energy (TKE) closure model for the LES of the mixed layer.…”

Design of an Air-Quality Surveillance System for Buenos Aires City Integrated by a NO x Monitoring Network and Atmospheric Dispersion Models

“…The high population density, great number of automobiles and public transport vehicles, high concentration of truck traffic and three power plants located nearby all contribute to air pollution. Several studies on air pollution in the city and air-quality monitoring campaigns [3,4,23,25,35] have been carried out. Other studies of the air-quality conditions in Buenos Aires City include the following: the development of the first version of an emission inventory of CO and NO x [24], some aspects of air pollution climatology in the area [33] and the application of urban atmospheric dispersion models [38,39] to estimate background air-pollution concentration distributions in Buenos Aires.…”