Impact of Covid-19 lockdown on PM10, SO2 and NO2 concentrations in Salé City (Morocco)

Otmani, Anas; Benchrif, Abdelfettah; Tahri, Mounia; Bounakhla, M.; Chakir, E.; Bouch, Mohammed El; Krombi, M'hamed

doi:10.1016/j.scitotenv.2020.139541

Cited by 315 publications

(235 citation statements)

References 14 publications

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“…Their results reveal that levels of polluting gases fell by about 45% after two weeks. Similar findings are reported in Thailand ( Stratoulias and Nuthammachot, 2020 ), China and Japan ( Ma and Kang, 2020 ; Zhang et al, 2020 ), Ecuador ( Zalakeviciute et al, 2020 ), Iran ( Broomandi et al, 2020 ), Milan, Italy ( Collivignarelli et al, 2020 ) and Morocco ( Otmani et al, 2020 ). Siciliano et al (2020) and Zhao et al (2020) , in turn, identified noteworthy increases in ozone concentrations (O 3 ) during the measures of social distancing adopted respectively by Brazil and China.…”

Section: Resultssupporting

confidence: 82%

Analysis of the scientific production of the effect of COVID-19 on the environment: A bibliometric study

Casado‐Aranda

Sánchez‐Fernández

Viedma-del-Jesús

2021

Environmental Research

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The fight against COVID-19 since January 2020 has become the top priority of more than 200 countries. In order to offer solutions to eradicate this global pandemic, the scientific community has published hundreds of articles covering a wide range of areas of knowledge. With the aim of synthesizing these publications, academics are resorting to bibliometric analyses from the perspectives of the disciplines such as biology, medicine, socioeconomics and tourism. Yet no bibliometric analysis has explored the diffuse and little-known growth of COVID-19 scientific publications in the field of environmental studies. The current study is the first of this type to fill this research gap. It has resorted to SciMAT software to evaluate the main topics, authors and journals of publications on the subject of COVID-19 combined with environmental studies spanning the period between 1 December 2019 and 6 September 2020. The search yielded a collection of 440 articles published in scientific journals indexed on by Web of Science and Scopus databases. These publications can be broken down into six main themes: (i) a sharp reduction in air pollution and an improvement of the level of water pollution; (ii) the relationship of wind speed (positive), ultraviolet radiation (positive) and humidity (negative) with the rate of infections; (iii) the effect of the pandemic on the food supply chain and waste habits; (iv) wastewater monitoring offers a great potential as an early warning sign of COVID-19 transmission; (v) artificial intelligence and smart devices can be of great use in monitoring citizen mobilization; and (vi) the lessons gleaned from the pandemic that help define actions to mitigate climate change. The results of the current study therefore offer an agenda for future research and constitute a starting point for academics in the field of environmental studies to evaluate the effects of COVID-19.

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Section: Resultssupporting

confidence: 82%

Analysis of the scientific production of the effect of COVID-19 on the environment: A bibliometric study

Casado‐Aranda

Sánchez‐Fernández

Viedma-del-Jesús

2021

Environmental Research

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“…Even in Wuhan City, China 30% reduction of NO 2 was also found in 2020 than 2019 (He et al 2020b). in Salé City, Morocco, the concentration of PM10, NO 2 and SO 2 were decreased respectively, by 75%, 96% and 49% within few days after implementation of COVID-19 lockdown (Otmani et al 2020).…”

Section: Discussionmentioning

confidence: 90%

Impacts on Air Quality Index in the Industrial town of Asansol (West Bengal, India) due to COVID-19 lockdown

Ghosh¹

2020

Preprint

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The lockdown phase associated with COVID-19 pandemic initiated in full swing on and from 25th March, 2020 as preventive measures against the spreading of Corona virus. The objective of this study is to analyse the status of air quality of before and after lockdown in Asansol city which is second largest city of West Bengal, India and also known as “coal mining city”. Secondary data of five parameters like CO, SO2, NO2, PM2.5 and PM10 have been collected from Central Pollution Control Board, India. The result shows significant decrease of five parameters from 42.4 % (CO) to 63.4 % (NO2) due to close down of all industrial and transport activities during lockdown period. Based on different investigation a green belt development plan for this polluted city has been suggested for sustainable air quality management.

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“…In India, AOD reductions of up to 50% were perceived in New Delhi [5]. Otmani et al [53] found reductions of 75%, 49% and 96% for PM 10 , SO 2 and NO 2 in Salé City (Morocco). Also, emissions of NO 2 have been reduced up to 40% in Iraq compared to the pre-lockdown [54].…”

Section: Correlation Sars-cov-2 Infections With Meteorological and Aimentioning

confidence: 99%

Spread of COVID-19, Meteorological Conditions and Air Quality in the City of Buenos Aires, Argentina: Two Facets Observed during Its Pandemic Lockdown

et al. 2020

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This work studied the spread of COVID-19, the meteorological conditions and the air quality in a megacity from two viewpoints: (1) the correlation between meteorological and air quality (PM10 and NO2) variables with infections and deaths due COVID-19, and (2) the improvement in air quality. Both analyses were performed for the pandemic lockdown due to COVID-19 in the City of Buenos Aires (CABA), the capital and the largest city in Argentina. Daily data from temperature, rainfall, average relative humidity, wind speed, PM10, NO2, new cases and deaths due COVID-19 were analyzed. Our findings showed a significant correlation of meteorological and air quality variables with COVID-19 cases. The highest temperature correlation occurred before the confirmation day of new cases. PM10 presented the highest correlation within 13 to 15 days lag, while NO2 within 3 to 6 days lag. Also, reductions in PM10 and NO2 were observed. This study shows that exposure to air pollution was significantly correlated with an increased risk of becoming infected and dying due to COVID-19. Thus, these results show that the NO2 and PM10 levels in CABA can serve as one of the indicators to assess vulnerability to COVID-19. In addition, decision-makers can use this information to adopt strategies to restrict human mobility during the COVID-19 pandemic and future outbreaks of similar diseases in CABA.

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Impact of Covid-19 lockdown on PM10, SO2 and NO2 concentrations in Salé City (Morocco)

Cited by 315 publications

References 14 publications

Analysis of the scientific production of the effect of COVID-19 on the environment: A bibliometric study

Analysis of the scientific production of the effect of COVID-19 on the environment: A bibliometric study

Impacts on Air Quality Index in the Industrial town of Asansol (West Bengal, India) due to COVID-19 lockdown

Spread of COVID-19, Meteorological Conditions and Air Quality in the City of Buenos Aires, Argentina: Two Facets Observed during Its Pandemic Lockdown

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