Comparison of maps of nitrogen dioxide concentration, dust, wind and vegetation in Shiraz and Mashhad cities

Subject Areas : Journal of Radar and Optical Remote Sensing and GIS

Sajed Rezazadeh ¹ , Mahmood Hashemi ² , Hossein Hatefi ³ , Abbas Moradi ⁴

1 - Geography, Literature and Human Sciences, Islamic Azad, Yazd Branch, Yazd, Iran
2 - Geography, Literature and Human Sciences, Islamic Azad, Yazd Branch, Yazd, Iran
3 - Geography, Literature and Human Sciences, Islamic Azad, Yazd Branch, Yazd, Iran
4 - Geography, Literature and Human Sciences, Azad Islamic, Yazd Branch, Yazd, Iran

Received: 2022-10-30 Accepted : 2023-01-27 Published : 2023-03-01

Keywords: Shiraz, Mashhad, Dust map, nitrogen dioxide concentration map,

Abstract :

Today, various pollutants enter the air due to human actions, biological activities and natural factors and endanger human life. Among the nitrogen oxides in the air, (NO2) is one of the most important pollutants, and dust is one of the most important harmful climate phenomena. In this regard, the aim of this research is to investigate the dust map and nitrogen dioxide concentration map in Mashhad and Shiraz regions and their effects in these regions. This study investigates and compares the dust volume and nitrogen dioxide concentration in Mashhad and Shiraz regions. And their relationship with land use, wind intensity and vegetation has been analyzed using satellite images and model maps through Google Earth Engine, a specialized web-based remote sensing system. The results show that the concentration of nitrogen dioxide is related to the land use of the cities in such a way that in industrial areas and urban centers that are mostly commercial and administrative, and it causes population density and increased transportation in these areas, the increase in the concentration of nitrogen dioxide In addition, there is an indirect relationship between wind intensity and nitrogen dioxide concentration. Also, dust, vegetation and wind intensity are related to each other, so that wind intensity is directly related to the amount of dust and increases its effects. Also, there is less dust in areas with more vegetation.