Spatio-Temporal Modeling of Ozone Distribution in Tehran, Iran Based on Neural Network and Geographical Information System

Leila  Sherafati; Hossein  Aghamohammadi Zanjirabad; Saeed  Behzadi

doi:10.18502/ijph.v51i1.8312

Leila Sherafati Department of Remote Sensing and GIS, Faculty of Natural resources and Environment, Science and Research Branch, Islamic Azad University, Tehran, Iran
Hossein Aghamohammadi Zanjirabad Department of Remote Sensing and GIS, Faculty of Natural resources and Environment, Science and Research Branch, Islamic Azad University, Tehran, Iran
Saeed Behzadi Department of Surveying Engineering, Faculty of Civil Engineering, Shahid Rajaee Teacher Training University, Tehran, Iran

DOI: https://doi.org/10.18502/ijph.v51i1.8312

Keywords: Spatial analysis; Neural networks, Computer; Geographic information systems (GIS); Ozone

Abstract

Background: Air pollution is one of the most important causes of respiratory diseases that people face in big cities today. Suspended particulates, carbon monoxide, sulfur dioxide, ozone, and nitrogen dioxide are the five major pollutants of air that pose many problems to human health. We aimed to provide an approach for modeling and analyzing the spatiotemporal model of ozone distribution based on Geographical Information System (GIS).

Methods: In the first step, by considering the accuracy of different interpolation methods, the Inverse distance weighted (IDW) method was selected as the best interpolation method for mapping the concentration of ozone in Tehran, Iran. In the next step, according to the daily data of Ozone pollutants, the daily, monthly, and annual mean concentrations maps were prepared for the years 2015, 2016, and 2017.

Results: Spatial and temporal analysis of the distribution of ozone pollutants in Tehran was performed. The highest concentrations of O₃ are found in the southwest and parts of the central part of the city. Finally, a neural network was developed to predict the amount of ozone pollutants according to meteorological parameters.

Conclusion: The results show that meteorological parameters such as temperature, velocity and direction of the wind, and precipitation are influential on O₃ concentration.