scholarly journals The impact of COVID-19 lockdown on the air quality of Eastern Province, Saudi Arabia

2020 ◽  
Vol 14 (1) ◽  
pp. 117-128 ◽  
Author(s):  
Ismail Anil ◽  
Omar Alagha
2022 ◽  
Vol 9 ◽  
Author(s):  
Bhupendra Pratap Singh ◽  
Gaber E. Eldesoky ◽  
Pramod Kumar ◽  
Prakash Chandra ◽  
Md Ataul Islam ◽  
...  

Novel Coronavirus disease (COVID-19), after being identified in late December 2019 in Wuhan city of China, spread very fast and has affected all the countries in the world. The impact of lockdowns on particulate matter during the lockdown period needs attention to explore the correlation between anthropogenic and natural emissions. The current study has demonstrated the changes in fine particulate matter PM2.5, PM10 and their effect on air quality during the lockdown. The air quality before the lockdown was low in New Delhi (India) and Riyadh (Saudi Arabia), among major cities worldwide. The air quality of India is influenced by dust and sand from the desert and surrounding areas. Thus, the current study becomes important to analyse changes in the air quality of the Indian sub-continent as impacted by dust storms from long distances. The result indicated a significant reduction of PM2.5 and PM10 from 93.24 to 37.89 μg/m3 and from 176.55 to 98.87 μg/m3 during the lockdown period as compared to pre lockdown period, respectively. The study shows that average concentrations of PM10 and PM2.5 have declined by -44% and -59% during the lockdown period in Delhi. The average value of median PM10 was calculated at 33.71 μg/m3 for Riyadh, which was lower than that value for New Delhi during the same period. The values of PM10 were different for pre and during the lockdown periods in Riyadh, indicating the considerable influence on air quality, especially the concentration of PM10, from both the natural (sand and dust storms) and the anthropogenic sources during the lockdown periods. However, relatively smaller gains in the improvement of air quality in Riyadh were correlated to the imposition of milder lockdown and the predominance of natural factors over the anthropogenic factors there. The Air Quality Index (AQI) data for Delhi showed the air quality to be ‘satisfactory’ and in the green category during the lockdown period. This study attempts to better understand the impact of particulate matter on the short- and long-term air quality in Delhi during the lockdown. This study has the scope of being scaled up nationwide, and this might be helpful in formulation air pollution reduction and sustainable management policies in the future.


Author(s):  
Khaled Alghamdi ◽  
Feras Aljohani ◽  
Ala Alrehaili ◽  
Ahmed Alhusayni ◽  
Turki Alrehaili ◽  
...  

Atmosphere ◽  
2021 ◽  
Vol 12 (12) ◽  
pp. 1603
Author(s):  
Ana R. Gamarra ◽  
Yolanda Lechón ◽  
Marta G. Vivanco ◽  
Mark Richard Theobald ◽  
Carmen Lago ◽  
...  

This paper assesses the health impact, in terms of the reduction of premature deaths associated with changes in air pollutant exposure, resulting from double-aim strategies for reducing emissions of greenhouse gases and air pollutants from the transport sector for the year 2030 in Spain. The impact on air quality of selected measures for reducing emissions from the transport sector (increased penetration of biofuel and electric car use) was assessed by air quality modeling. The estimation of population exposure to NO2, particulate matter (PM) and O3 allows for estimation of associated mortality and external costs in comparison with the baseline scenario with no measures. The results show that the penetration of the electric vehicle provided the largest benefits, even when the emissions due to the additional electricity demand were considered.


2020 ◽  
Vol 28 (12) ◽  
pp. 1514-1519
Author(s):  
Diena M. Almasri ◽  
Ahmad O. Noor ◽  
Ragia H. Ghoneim ◽  
Alaa A. Bagalagel ◽  
Mansour Almetwazi ◽  
...  

2013 ◽  
Vol 185 (9) ◽  
pp. 7309-7325 ◽  
Author(s):  
Venkata Swamy Yerramsetti ◽  
Anu Rani Sharma ◽  
Nikhil Gauravarapu Navlur ◽  
Venkanna Rapolu ◽  
N. S. K. Chitanya Dhulipala ◽  
...  

2016 ◽  
Vol 89-90 ◽  
pp. 138-146 ◽  
Author(s):  
Zheming Tong ◽  
Yujiao Chen ◽  
Ali Malkawi ◽  
Gary Adamkiewicz ◽  
John D. Spengler

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