Table of Contents
ISRN Meteorology
Volume 2013 (2013), Article ID 605210, 14 pages
http://dx.doi.org/10.1155/2013/605210
Research Article

Main Characteristics of Mexico City Local Wind Events during the MILAGRO 2006 Campaign within a Meso-β Scale Lattice Wind Modeling Approach

1División de Energías Alternas, Instituto de Investigaciones Eléctricas, Reforma 113, Palmira, 62490 Cuernavaca, MOR, Mexico
2División de Matemáticas e Ingeniería, Programa de Matemáticas Aplicadas y Computación, Facultad de Estudios Superiores Acatlán, Universidad Nacional Autónoma de México, Avenida San Juan Totoltepec s/n, Santa Cruz Acatlán, 53150 Naucalpan, MEX, Mexico
3International Institute for Learning México S.A. de C.V., Prado Sur 240-303, Lomas de Chapultepec, Miguel Hidalgo, 11000 Mexico City, DF, Mexico
4Centro de Ciencias de la Atmósfera, Universidad Nacional Autónoma de México, Circuito Exterior, Ciudad Universitaria, 04510 Mexico City, DF, Mexico
5Istituto di Biometeorologia, Consiglio Nazionale delle Ricerche (IBIMET-CNR), Via Gobetti 101, 40129 Bologna, Italy

Received 29 November 2012; Accepted 17 December 2012

Academic Editors: N. A. Mazzeo and D. Moreira

Copyright © 2013 Ana-Teresa Celada-Murillo et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

A characterization of local wind events in Mexico City, which occurred during MILAGRO campaign, was carried out within the framework of a lattice wind modeling approach at a meso-β scale. Mexico City was modeled as a 2D lattice domain with a given number of identical cells. Local wind conditions at any cell were described by a state variable defined by the spatial averages of wind attributes such as speed, direction, divergence, and vorticity. Full and partial densities of wind states were discussed under different conditions using two simple lattice wind models. We focus on the results obtained with the 1-cell lattice wind model and provide brief comments about preliminary results obtained with the 4-cell model. The 1-cell model allowed identifying the main patterns of the wind circulation in Mexico City throughout the study period (anabatic and katabatic winds, winds induced by the urban heat island, and winds with high possibilities for exchanging pollutants between Mexico City and the neighboring settlements, among others). The model showed that Mexico City wind divergence and vorticity disclose superposed oscillations whose most important periods were 24 and 12 hours, suggesting strong connections with the diurnal cycle of incoming solar radiation and the urban heat island.