Ecology, Environment and Conservation Paper

Vol 20, Issue 2, 2014; Page No.(771-776)

STATUS AND PREDICTION OF OZONE AS AN AIR POLLUTANT IN TEHRAN, IRAN

Masoud Masoudi, F. Behzadi and M. Sakhaei

Abstract

In the current research air quality analyses for Tehran, Capital of Iran, are conducted for ozone (O3), with the measurements taken from 2007 and 2008. Measurements were taken from three different locations in the city to make average data for the city. Some relations between the air pollutant and some meteorological parameters have been found statistically by using the daily average data. The wind data (velocity, direction), relative humidity, temperature, sunshine hours, evaporation, dew point and rainfall are considered as independent variables. The level relationships between concentration of pollutant and meteorological parameters are expressed by multiple linear and nonlinear regression equations for both annual and seasonal conditions using the software of SPSS. Then the concentration averages were calculated for every 24 hours, each month and each season for the city. Results show the highest concentration of ozone occurs generally in the afternoon while the least concentration occurs in the mid-night. Monthly concentrations of the ozone show highest value in September and the least value in January. The seasonal concentrations show the least amounts in winter while the highest amounts in summer.

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