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Atmospheric black carbon concentrations in Mexico

Author:
Peralta, Oscar, Ortínez-Alvarez, Abraham, Basaldud, Roberto, Santiago, Naxieli, Alvarez-Ospina, Harry, de la Cruz, Karen, Barrera, Valter, de la Luz Espinosa, María, Saavedra, Isabel, Castro, Telma, Martínez-Arroyo, Amparo, Páramo, Víctor H., Ruíz-Suárez, Luis G., Vazquez-Galvez, Felipe A., Gavilán, Arturo
Source:
Atmospheric research 2019 v.230 pp. 104626
ISSN:
0169-8095
Subject:
altitude, carbon, carbon monoxide, data quality, gases, quality control, urban areas, Mexico
Abstract:
Atmospheric black carbon concentrations were measured at two urban sites (Mexico City and Monterrey), one suburban site (Juriquilla) and one high-altitude site (Altzomoni) in Mexico during 2015 and part of 2016. Black carbon concentrations were compared against other criteria gases finding a strong correlation with carbon monoxide at the urban sites. The carbon monoxide-black carbon correlation for the Mexico City site is 0.77. Urban sites had an average black carbon concentration of above 2.5 μg m−3, the suburban site 0.75 μg m−3, and the high-altitude site 0.27 μg m−3. Compared to other studies, the average levels are comparable, and the urban and suburban locations showed a trend towards increased atmospheric black carbon concentrations at year end. Other urban places (Guadalajara, Cuernavaca, and Iztapalapa) reported black carbon concentrations, but for less than a year. For the first time, a Latin-American country (Mexico) measured black carbon continuously at several sites for a year applying the same data quality assurance.
Agid:
6537165