期刊名称：International Journal of Innovative Research in Science, Engineering and Technology
印刷版ISSN：2347-6710
电子版ISSN：2319-8753
出版年度：2014
卷号：3
期号：3
页码：9995
出版社：S&S Publications
摘要：Local topography plays a very important role in the dispersal of pollutants. It is worth mentioninghere that a coastal station, Visakhapatnam recorded very high concentrations in April in spite of higher mixing,which is because of its basin-like topographical structure confined by two ranges of hills. In this article an attempt ismade to calculate the morning (minimum) mixing heights for winter, pre-monsoon, monsoon and post-monsoonseasons. In this study a comparison is made within the pollutants (SPM, SO2, and NOx) concentrations. Februaryrecorded peak concentration and April recorded minimum value. If a comparison is made as season wise winterseason recorded maximum concentrations and followed by post monsoon season, summer season respectively. Inthis article we observed that the maximum concentrations are occurring within a distance of 100 m.
