RT Journal Article T1 Social status and air quality in Barcelona: A socio-ecological approach A1 Joan Carles Martori, A1 Raymond Lagonigro, A1 Iglesias Pascual, Ricardo K1 Air quality K1 Socio-ecological approach K1 Geographically weighted regression K1 Income level K1 Barcelona AB During the last two decades, many studies have described the effects of air pollution in urban areas. This paper analyses the spatial patterns of the main air pollutants in the city of Barcelona, i.e. nitrogen dioxide (NO2), fine particulates of less than 2.5μm (PM2.5) and coarse particulates of 10μm (PM10), and explores the factors associated with air quality in relation to the social and environmental characteristics of each area of the city using 1068 census tracts. The city exhibits a situation of high annual averages of pollutants regarding the World Health Organization (WHO) guidelines and the European Union regulations, with most of the census tracts with amounts of NO2>20 µg/m3, PM2.5>10 µg/m3 and PM10>20 µg/m3. To analyse the spatial pattern, we use exploratory spatial data analysis (ESDA) and estimation of spatial econometric models. We test global and local spatial autocorrelation, and we identify spatial clusters of pollutants with the Local Moran cluster map. We use different geographically weighted regression (GWR) approaches to provide local insight and to consider the spatial heterogeneity of the relationships analysed, including standard GWR, multiscale and mixed techniques. Our results for Barcelona reveal a clear relationship, but with opposite signs depending on the census tract, between the pollutants commonly analysed and population density (from -2.17 to 3.69, median 1.3), income (from -7.20 to 20.55, median 6.45) and population aged 0-4 (from -1.96 to 12.38, median 0.74). PB Elsevier YR 2021 FD 2021 LK https://hdl.handle.net/10433/22480 UL https://hdl.handle.net/10433/22480 LA en NO Martori, J. C., Lagonigro, R., & Iglesias-Pascual, R. (2022). Social status and air quality in Barcelona: A socio-ecological approach. Sustainable Cities and Society, 87, 104210. NO FECYT -- DINAMICAS SOCIOTERITORIALES EN LAS AREAS METROPOLITANAS ESPAÑOL... NO Departamento de Geografía, Historia y Filosofía. Universidad Pablo de Olavide. DS RIO RD May 8, 2026