AccScience Publishing / AJWEP / Volume 15 / Issue 2 / DOI: 10.3233/AJW-180020
RESEARCH ARTICLE

Air Pollution Effects on Climate and Air Temperature of Tehran City Using Remote Sensing Data

Seyyed Sadeq Raouf1 Hamid Goharnejad1* Mahmoud Zakeri Niri1
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1 Department of Civil Engineering, Environmental Sciences Research Center, Islamshahr Branch Islamic Azad University, Islamshahr, Iran
AJWEP 2018, 15(2), 79–87; https://doi.org/10.3233/AJW-180020
Submitted: 10 August 2017 | Revised: 19 January 2018 | Accepted: 19 January 2018 | Published: 11 May 2018
© 2018 by the Author(s). This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution -Noncommercial 4.0 International License (CC-by the license) ( https://creativecommons.org/licenses/by-nc/4.0/ )
Abstract

It is difficult to demonstrate air pollution spatial distribution as it is related to weather conditions,  location, topography, and the area. Air pollution is studied by remote sensing techniques less than other techniques  due to lack of sensors capable of detecting emissions, and hence, Aerosol Optical Depth (AOD) method is used  for investigation. Aerosol optical depth is a measure of the extinction of the solar beam by dust and haze. In this  study, the linear regression analysis was used to develop a relationship between AOD measures by MODIS and  daily air pollution (CO, O3, NO2, SO2 and PM2.5) in six consecutive years (2011-2016) at 22 stations in Tehran.  Matrix correlation between AOD values and air pollution parameters indicated a significant relationship for O3 and NO2 with regression squared from 0.631 to 0.764, respectively. Linear regression between AOD and the  parameters was separately developed and pollution maps were produced for CO, O3, NO2 and PM2.5 parameters  within 2011-2016. Spatial distribution map of the aforementioned gases revealed that NO2 and CO were higher  than the regular standards in the studied region during 2011-2016; PM2.5 was desirable in the northern areas;  however, its concentration was larger than the standard level in southern and central regions. Comparison of  pollution maps and land surface temperature (LST), picked up by MODIS satellite, indicated that the correlation  between PM2.5 and temperature is R = 0.55; in addition, it largely influences higher air pollution increases in  Tehran comparing other gases.

Keywords
S satellite
PM2.5
Conflict of interest
The authors declare they have no competing interests.
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Asian Journal of Water, Environment and Pollution, Electronic ISSN: 1875-8568 Print ISSN: 0972-9860, Published by AccScience Publishing