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| Titel |
A more comprehensive view of air pollution in the Mexico City Metropolitan Area using ground-based visible spectroscopy measurements of nitrogen dioxide |
| VerfasserIn |
M. L. Melamed, S. Emeis, R. Basaldud, L. G. Ruíz-Suárez, R. Steinbrecher, M. Grutter |
| Konferenz |
EGU General Assembly 2009
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 11 (2009) |
| Datensatznummer |
250028515
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| Zusammenfassung |
| The Mexico City Metropolitan Area (MCMA) is a megacity of primary interest in regards to
urban air pollution due to its location in the subtopics (19Ë N and 99Ë W), its altitude of 2240
m above sea level, and its estimated population of 20 million. Due to its location within a flat
basin surrounded by mountains on three sides, air pollution throughout the MCMA is variable
and complex. Here, a comprehensive view of air pollution transport events during
MILAGRO 2006 at the Tenango del Aire research site, located to the southeast of
Mexico City, is presented. Vertical column densities of nitrogen dioxide (NO(2)) from
ground-based differential optical absorption spectroscopy (DOAS) measurements are
used in conjunction with surface meteorological measurements, surface mixing
ratios of nitrogen oxides (NO(x) and NO(y)) and ceilometer mixing layer height
measurements. This rich data set provides insight into the development and extent of mixing
of the mixing layer and can be used to observe pollution sources that may reside
above the mixing layer, such as lightning produced NO(2). This work represents an
important step in unraveling the complexity of urban air pollution in the MCMA. |
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