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Ultrafine Particles in Mexico City Metropolitan Area: a review

Cardenas, Beatriz; Alberto, Aguilar; Benitez, Sandy; González, Eder Herget; Jaimes, Monica; Retama, Armando

Abstract:
Mexico City Metropolitan Area (MCMA), once identified as the most polluted city in the world few decades ago is now a history of success in terms of air quality. As a result of a series of air quality actions implemented over the last 25 years, air quality has improved considerable. Based on a robust air monitoring and health databases, a recent study have shown that reductions in PM2.5 in this period, avoided 22,500 premature deaths approximately. Still, there is more way to go since quality standards are not attained yet for ozone and particulate matter (PM2.5 annual average concentrations in 2017 were 23 μg/m3 and 30 μg/m3, in Mexico City and Metropolitan area monitoring sites, respectively). Existing data either from emissions inventories, continuous monitoring and field campaigns have shown the contribution of the different emissions sources, highlighting the important role of transportation in emissions and formation of ultrafine particles in MCMA. Few pilot studies have shown the high level of ultrafine particles emissions of the existing heavy duty diesel fleet (Euro II and III). In addition, results of ultrafine particles emissions of gasoline light vehicles measured at the inspection and maintenance test shown that old vehicles among other characteristics are also high emitters. ... mehr

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Volltext §
DOI: 10.5445/IR/1000096776
Veröffentlicht am 23.07.2019
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Meteorologie und Klimaforschung - Atmosphärische Aerosolforschung (IMK-AAF)
KIT-Zentrum Klima und Umwelt (ZKU)
Publikationstyp Vortrag
Publikationsdatum 15.05.2019
Sprache Englisch
Identifikator KITopen-ID: 1000096776
HGF-Programm 12.03.03 (POF III, LK 01) Gas to particle conversion
Veranstaltung 7th International Symposium on Ultrafine Particles, Air Quality and Climate (2019), Brüssel, Belgien, 15.05.2019 – 16.05.2019
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