Armando Retama

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The Mexico City metropolitan area (MCMA) is a region that continues to grow in population and vehicular traffic as well as being the largest source of short-lived climate pollutants (SLCP) in Latin America. The local city government has made significant progress in controlling some of these pollutants, i.e., ozone (O3) and carbon monoxide (CO), but(More)
We assessed the contributions of particulate matter with aerodynamic diameters < or =10 and < or =2.5 microm (PM2.5 and PM10) and ozone (O3) to peak expiratory flow (PEF) and respiratory symptoms in 40 schoolchildren 8-11 years of age for 59 days during three periods in 1991 at a school in southwest Mexico City. We measured peak expiratory flow in the(More)
Study question: We examined whether methods for measuring exposure to airborne particles less than 10 μm in aerodynamic diameter (PM10) in the Mexico City metropolitan area give different estimates of PM10 levels, and the nature of these differences, and developed a model for estimating missing PM10 data for one measurement method. Methods: Government PM10(More)
Surface pollutant concentrations in M ´ exico City show a distinct pattern of weekly variations similar to that observed in many other cities of the world. Measurements of the concentrations of carbon monoxide (CO), nitrogen oxides (NO x =NO+NO 2), particulate matter smaller than 10 µm (PM 10), and ozone (O 3) collected hourly over 22 5 years (1986–2007) at(More)
Isao Kanda 1,2,*, Roberto Basaldud 3, Miguel Magaña 3, Armando Retama 4, Ryushi Kubo 5 and Shinji Wakamatsu 1 1 Faculty of Agriculture, Ehime University, 3-5-7 Tarumi, Matsuyama, Ehime 7908566, Japan; wakamatu@agr.ehime-u.ac.jp 2 Japan Meteorological Corporation, 2-7-6 Saiwaicho, Naniwa, Osaka, Osaka 5650021, Japan 3 National Institute of Ecology and(More)
This article describes the High-Elective Resolution Modelling Emission System for Mexico (HERMES-Mex) model, an emission processing tool developed to transform the official Mexico City Metropolitan Area (MCMA) emission inventory into hourly, gridded (up to 1km2) and speciated emissions used to drive mesoscale air quality simulations with the Community(More)
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