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Intra-urban variability of long-term exposure to PM~2.5~ and NO~2~ in five cities in Colombia by Laura A. Rodriguez-Villamizar; Yurley Rojas; Sara Grisales; Sonia C. Mangones; Jhon J. Cáceres; Dayana M. Agudelo-Castañeda; Víctor Herrera; Diana Marín; Juan G. Piñeros Jiménez; Luis C. Belalcázar-Ceron; Oscar Alberto Rojas-Sánchez; Jonathan Ochoa Villegas; Leandro López; Oscar Mauricio Rojas; María C. Vicini; Wilson Salas; Ana Zuleima Orrego; Margarita Castillo; Hugo Sáenz; Luis Álvaro Hernández; Scott Weichenthal; Jill Baumgartner; Néstor Y. Rojas is a Environmental Science article available to read on EtoBox.
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## Abstract Rapidly urbanizing cities in Latin America experience high levels of air pollution which are known risk factors for population health. However, the estimates of long-term exposure to air pollution are scarce in the region. We developed intraurban land use regression (LUR) models to map long-term exposure to fine particulate matter (PM~2.5~) and nitrogen dioxide (NO~2~) in the five largest cities in Colombia. We conducted air pollution measurement campaigns using gravimetric PM~2.5~ and passive NO~2~ sensors for 2 weeks during both the dry and rainy seasons in 2021 in the cities of Barranquilla, Bucaramanga, Bogotá, Cali, and Medellín, and combined these data with geospatial and meteorological variables. Annual models were developed using multivariable spatial regression models. The city annual PM~2.5~ mean concentrations measured ranged between 12.32 and 15.99 μg/m^3^ while NO~2~ concentrations ranged between 24.92 and 49.15 μg/m^3^. The PM~2.5~ annual models explained 82% of the variance (__R__^2^) in Medellín, 77% in Bucaramanga, 73% in Barranquilla, 70% in Cali, and 44% in Bogotá. The NO~2~ models explained 65% of the variance in Bucaramanga, 57% in Medellín, 44% in
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- Author
- Laura A. Rodriguez-Villamizar; Yurley Rojas; Sara Grisales; Sonia C. Mangones; Jhon J. Cáceres; Dayana M. Agudelo-Castañeda; Víctor Herrera; Diana Marín; Juan G. Piñeros Jiménez; Luis C. Belalcázar-Ceron; Oscar Alberto Rojas-Sánchez; Jonathan Ochoa Villegas; Leandro López; Oscar Mauricio Rojas; María C. Vicini; Wilson Salas; Ana Zuleima Orrego; Margarita Castillo; Hugo Sáenz; Luis Álvaro Hernández; Scott Weichenthal; Jill Baumgartner; Néstor Y. Rojas
- Publisher
- Springer
- Published
- 2023
- Language
- EN
- Field
- Environmental Science (Physical Sciences)