High–resolution pollutant transport in the San Pedro Bay of California

Developmental Biology

Donald Dabdub²  Jun Wu¹  Alexander Cohan² 

[1]Program in Public Health and Department of Epidemiology, College of Health Sciences, University of California, Irvine, USA$$

[2]Department of Mechanical and Aerospace Engineering, University of California, Irvine, USA$$

关键词: AERMOD;    PM2.5;    NOX;    Air pollution;    Dispersion modeling;   

DOI  :  10.5094/APR.2011.030

学科分类：农业科学（综合）

来源: Dokuz Eylul Universitesi * Department of Environmental Engineering

【 摘 要 】

The combined sea port of Los Angeles and Long Beach in California constitutes the second busiest port in the United States by shipping volume. Communities near the ports face environmental justice concerns from a variety of sources including roadway and port related activities. This study examines the transport and diffusion of PM_2.5 and NO_X in port communities using the high–resolution plume model AERMOD, incorporating surface and aloft observed meteorology and local topography. Pollution impacts of roadway related emissions, direct port activity of cargo handling equipment and commercial shipping vessels are modeled for representative cold and hot months in 2005. Predictions from roadway emissions are compared with the same episode modeled with CALINE4 line dispersion model. Results show high spatial variability as well as increased transport during cold months. In addition, research also shows that while the port activity significantly impacts in–port air pollution, the effects of port activity is limited to within 2–6 km of the ports. Port adjacent communities are most sensitive to roadway related emissions. AERMOD PM_2.5 and NO_X predictions show a peak correlation coefficient of 43% and 50% compared with observations, respectively.

【 授权许可】

Unknown   

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