Articles | Volume 7, issue 10
Atmos. Chem. Phys., 7, 2447–2473, 2007

Special issue: Mexico City Metropolitan Area Field Campaign 2003...

Atmos. Chem. Phys., 7, 2447–2473, 2007

  14 May 2007

14 May 2007

Air quality in North America's most populous city – overview of the MCMA-2003 campaign

L. T. Molina2,1, C. E. Kolb3, B. de Foy4,2,1, B. K. Lamb5, W. H. Brune6, J. L. Jimenez8,7, R. Ramos-Villegas9, J. Sarmiento9, V. H. Paramo-Figueroa9, B. Cardenas10, V. Gutierrez-Avedoy10, and M. J. Molina1,11 L. T. Molina et al.
  • 1Department of Earth, Atmospheric and Planetary Science, Massachusetts Institute of Technology, Cambridge, MA, USA
  • 2Molina Center for Energy and Environment, La Jolla, CA, USA
  • 3Aerodyne Research, Inc., Billerica, MA, USA
  • 4Saint Louis University, St. Louis, MO, USA
  • 5Laboratory for Atmospheric Research, Department of Civil and Environmental Engineering, Washington State University, Pullman, WA, USA
  • 6Department of Meteorology, Pennsylvania State University, University Park, PA, USA
  • 7Department of Chemistry and Biochemistry, University of Colorado at Boulder, Boulder, CO, USA
  • 8Cooperative Institute for Research in the Environmental Sciences (CIRES), Univ. of Colorado at Boulder, Boulder, CO, USA
  • 9Secretary of Environment, Government of the Federal District, Mexico, DF, Mexico
  • 10National Center for Environmental Research and Training, National Institute of Ecology, Mexico, DF, Mexico
  • 11Department of Chemistry and Biochemistry, University of California at San Diego, San Diego, CA, USA

Abstract. Exploratory field measurements in the Mexico City Metropolitan Area (MCMA) in February 2002 set the stage for a major air quality field measurement campaign in the spring of 2003 (MCMA-2003). Involving over 100 scientists from more than 30 institutions in Mexico, the United States and Europe, MCMA-2003 revealed important new insights into the meteorology, primary pollutant emissions, ambient secondary pollutant precursor concentrations, photochemical oxidant production and secondary aerosol particle formation in North America's most populated and polluted megacity. A description of meteorological and atmospheric chemistry and aerosol microphysics measurements performed during MCMA-2003 is presented. More than 40 published or submitted MCMA-2003 research papers are reviewed and key discoveries pertinent to understanding and improving air quality in Mexico City and similar megacities in the developing world are summarized.

Final-revised paper