Spatial Analysis of Air Pollutants Carbon Monoxide in Mashhad

Document Type : Original Article

Authors

1 PhD in Climatology, Deputy of Environment and Urban Services of Mashhad Municipality Mashhad, Iran

2 Master of Environmental Science, Department of the Environment Khorasan Razavi Province,Mashhad, Iran

10.22034/eiap.2022.158590

Abstract

In this study, carbon monoxide pollutants in the air of Mashhad in the 6 years (from 2014 to 2020) have been analyzed by spatial analysis. For this purpose, the monthly average for each station is calculated based on the daily concentration, and using the interpolation function, 72 monthly distribution maps with cells in the dimensions of 500 * 500 meters (1247 cells in the city of Mashhad) were drawn. Finally, combination of monthly maps for each year, a six-year average map was obtained. To spatial analysis, geographical distribution, pattern analysis, and cluster analysis have been used. The results showed that the spatial distribution of CO in Mashhad has a cluster pattern. The results of local Moran index analysis showed two hot spots separately from each other in Mashhad, that both of them are located in the direction on the Vakilabad and Khayyam boulevards. The characteristics of statistical components of traffic and transportation in hot spots are significantly different from other parts of the city (cold spots). The total length of the transportation network is 53%, private cars 73%, motorcycles 83%, and buses and trucks 75% more in the identified hot spots, which can explain the reason for the formation of these hot spots.

Keywords

References

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Environmental Researches
Volume 13, Issue 25
Recerches
September 2022
Pages 249-266

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