HR: 14:25h
AN: A13I-04    [Abstracts]
TI: Air quality modeling in the Valley of Mexico: meteorology, emissions and forecasting
AU: * Garcia-Reynoso, A
EM: agustin@atmosfera.unam.mx
AF: Centro de Ciencias de la Atmosfera, Circuito exterior s/n Ciudad Universitaria Coyoacan, Mexico, DF 04510, Mexico
AU: Jazcilevich, A D
EM: jazcilev@servidor.unam.mx
AF: Centro de Ciencias de la Atmosfera, Circuito exterior s/n Ciudad Universitaria Coyoacan, Mexico, DF 04510, Mexico
AU: Diaz-Nigenda, E
EM: enigenda@atmosfera.unam.mx
AF: Centro de Ciencias de la Atmosfera, Circuito exterior s/n Ciudad Universitaria Coyoacan, Mexico, DF 04510, Mexico
AU: Vazquez-Morales, W
EM: williams@atmosfera.unam.mx
AF: Centro de Ciencias de la Atmosfera, Circuito exterior s/n Ciudad Universitaria Coyoacan, Mexico, DF 04510, Mexico
AU: Torres-Jardon, R
EM: rtorres@atmosfera.unam.mx
AF: Centro de Ciencias de la Atmosfera, Circuito exterior s/n Ciudad Universitaria Coyoacan, Mexico, DF 04510, Mexico
AU: Ruiz-Suarez, G
EM: ruizs@servidor.unam.mx
AF: Centro de Ciencias de la Atmosfera, Circuito exterior s/n Ciudad Universitaria Coyoacan, Mexico, DF 04510, Mexico
AU: Tatarko, J
EM: jt@weru.ksu.edu
AF: USDA-Agricultural Research Service, 1515 College Avenue, Manhattan, KS 66502, United States
AU: Bornstein, R
EM: pblmodel@hotmail.com
AF: San Jose State university, One Washington Square, San Jose, CA 95192-0104, United States
AB: The Valley of Mexico presents important challenges for air quality modeling: complex terrain, a great variety of anthropogenic and natural emissions sources, and high altitude and low latitude increasing the amount of radiation flux. The modeling group at the CCA-UNAM is using and merging state of the art models to study the different aspects that influence the air quality phenomenon in the Valley of Mexico. The air quality model MCCM that uses MM5 as its meteorological input has been a valuable tool to study important features of the complex and intricate atmospheric flows on the valley, such as local confluences and vertical fumigation. Air quality modeling has allowed studying the interaction between the atmospheres of the valleys surrounding the Valley of Mexico, prompting the location of measurement stations during the MILAGRO campaign. These measurements confirmed the modeling results and expanded our knowledge of the transport of pollutants between the Valleys of Cuernavaca, Puebla and Mexico. The urban landscape of Mexico City complicates meteorological modeling. Urban-MM5, a model that explicitly takes into account the influence of buildings, houses, streets, parks and anthropogenic heat, is being implemented. Preliminary results of urban-MM5 on a small area of the city have been obtained. The current emissions inventory uses traffic database that includes hourly vehicular activity in more than 11,000 street segments, includes 23 area emissions categories, more than 1,000 industrial sources and biogenic emissions. To improve mobile sources emissions a system consisting of a traffic model and a car simulator is underway. This system will allow for high time and space resolution and takes into account motor stress due to different driving regimes. An important source of emissions in the Valley of Mexico is erosion dust. The erosion model WEPS has been integrated with MM5 and preliminary results showing dust episodes over Mexico City have been obtained. A real time Ozone forecast model is being implemented for the Valley of Mexico whose performance is being evaluated.
DE: 0340 Middle atmosphere: composition and chemistry
DE: 0345 Pollution: urban and regional (0305, 0478, 4251)
DE: 0545 Modeling (4255)
SC: Atmospheric Sciences [A]
MN: 2007 Fall Meeting