Investigating the Spatial and Temporal Variation of NO2 Pollutant Obtained from Sentinel 5P Satellite in Cities of Yazd Province-Iran
محورهای موضوعی : Environment
Samaneh Mozaffari
1
,
Sadegh Mokhtarisabet
2
1 - Department of Environment,, Yazd Branch, Islamic Azad University, Yazd, Iran
2 - Islamic Azad University, Yazd, Iran
کلید واژه: Air Pollution Nitrogen Dioxide (NO2) Remote Sensing Sentinel-5P Yazd Province,
چکیده مقاله :
Background and objective: Nitrogen dioxide (NO2) is a significant air pollutant prevalent in industrialized and densely populated regions, including Yazd province. This study aims to assess the temporal and spatial variations in NO2 concentrations in Yazd and its surrounding areas. Materials and methods: Utilizing the advanced remote sensing capabilities of the Sentinel-5P satellite, we compiled monthly and seasonal distribution maps of NO2 concentrations for Yazd province over a one-year period, spanning from April 1401 to March 1402. The Google Earth Engine (GEE) platform facilitated the processing and visualization of satellite data. Additionally, the influence of wind patterns and precipitation on the dispersion and concentration of NO2 was systematically investigated. Results and conclusion: The findings revealed that the highest concentrations of NO2 occurred in spring, particularly in Yazd, while the lowest levels were recorded in winter, specifically in Bahabad city. It was observed that wind speed and direction had a limited impact on the distribution of NO2 across the province. In contrast, rainfall demonstrated a significant relationship with NO2 concentrations; increased rainfall correlated with reduced pollutant levels. Overall, the study highlights the necessity for continuous monitoring of air quality and the implications of meteorological factors on pollutant dispersion in Yazd province.
Background and objective: Nitrogen dioxide (NO2) is a significant air pollutant prevalent in industrialized and densely populated regions, including Yazd province. This study aims to assess the temporal and spatial variations in NO2 concentrations in Yazd and its surrounding areas. Materials and methods: Utilizing the advanced remote sensing capabilities of the Sentinel-5P satellite, we compiled monthly and seasonal distribution maps of NO2 concentrations for Yazd province over a one-year period, spanning from April 1401 to March 1402. The Google Earth Engine (GEE) platform facilitated the processing and visualization of satellite data. Additionally, the influence of wind patterns and precipitation on the dispersion and concentration of NO2 was systematically investigated. Results and conclusion: The findings revealed that the highest concentrations of NO2 occurred in spring, particularly in Yazd, while the lowest levels were recorded in winter, specifically in Bahabad city. It was observed that wind speed and direction had a limited impact on the distribution of NO2 across the province. In contrast, rainfall demonstrated a significant relationship with NO2 concentrations; increased rainfall correlated with reduced pollutant levels. Overall, the study highlights the necessity for continuous monitoring of air quality and the implications of meteorological factors on pollutant dispersion in Yazd province.
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