A study of air flow patterns affecting pollutant concentrations in the Central Region of Mexico

• Published in: Atmospheric environment (1994) Vol. 37; no. 2; pp. 183 - 193
• Main Authors: Jazcilevich, Aron D., Garcı́a, Agustı́n R., Ruı́z-Suárez, L.Gerardo
• Format: Journal Article
• Language: English
• Published: Oxford Elsevier Ltd 2003; Elsevier Science
• Subjects: Air flow in complex terrain; Air pollution modeling; Air quality; Applied sciences; Atmospheric pollution; Exact sciences and technology; Mexico City; Pollutants physicochemistry study: properties, effects, reactions, transport and distribution; Pollution; Central America; Mexico; America; Mexico, Mexico City; Air pollution modeling; Air quality; Air flow in complex terrain; Mexico City; Transport process; Air flow; Pollutant behavior; Complex terrain; Content; Air pollution; Modeling
• ISSN: 1352-2310; 1873-2844
• DOI: 10.1016/S1352-2310(02)00893-2

Using a prognostic air quality model that includes actual emissions, air pollution regimes over the central region of Mexico are simulated. It is shown that due to the complex orography, vertical circular patterns develop over the metropolitan area of Mexico City. In this way reactive and non-reactive pollutants can travel near the surface, be transported vertically and land in an area opposite to its initial route due to convective downward currents. This changes the surface pollutant concentrations on the landing area. Also, it is shown that air pollution is transported near the surface from the metropolitan area of Mexico City through Chalco in the South-east corner of the Mexico Valley, to the Valley of Cuautla affecting this area.