Impact of lockdown measures during COVID-19 on air quality– A case study of India

Kumari, Pratima; Toshniwal, Durga

doi:10.1080/09603123.2020.1778646

Cited by 170 publications

(133 citation statements)

References 7 publications

Supporting

Mentioning

123

Contrasting

Unclassified

Order By: Relevance

“…In India, rural areas have different emission sources from that of urban areas and are less influenced by lock measures (Garaga et al, 2020). In megacities such as Delhi, the predicted concentrations of PM2.5 decline during the lockdown, which is consistent with previous results (Kumari and Toshniwal, 2020;Chauhan and Singh, 2020). For instance, over a 60% reduction of PM2.5 is estimated in Delhi and Ahmedabad.…”

Section: Changes In Air Quality From Pre-lockdown To Lockdown Periodssupporting

confidence: 90%

Impact of reduced anthropogenic emissions during COVID-19 on air quality in India

Zhang¹,

Katiyar²,

Zhu³

et al. 2020

Preprint

View full text Add to dashboard Cite

Abstract. To mitigate the impacts of the pandemic of coronavirus disease 2019 (COVID-19), the Indian government implemented lockdown measures on March 24, 2020, which prohibit unnecessary anthropogenic activities and thus leading to a significant reduction in emissions. To investigate the impacts of this lockdown measures on air quality in India, we used the Community Multi-Scale Air Quality (CMAQ) model to estimate the changes of key air pollutants. From pre-lockdown to lockdown periods, improved air quality is observed in India, indicated by the lower key pollutant levels such as PM2.5 (−26 %), maximum daily 8-h average ozone (MDA8 O3) (−11 %), NO2 (−50 %), and SO2 (−14 %). In addition, changes in these pollutants show distinct spatial variations with the more important decrease in northern and western India. During the lockdown, our results illustrate that such emission reductions play a positive role in the improvement of air quality. Significant reductions of PM2.5 and its major components are observed especially for secondary inorganic aerosols with the decreasing rates up to 92 %, 57 %, and 79 % for nitrate (NO3−), sulfate (SO42−), ammonium (NH4+), respectively. On average, the MDA8 O3 also decreases 15 % during the lockdown period although it increases sparsely in some urban locations, which is mainly due to the lower NOx and VOCs emissions. More aggressive and localized emissions control strategies should be implemented in India to mitigate air pollutions in the future.

show abstract

Section: Changes In Air Quality From Pre-lockdown To Lockdown Periodssupporting

confidence: 90%

Impact of reduced anthropogenic emissions during COVID-19 on air quality in India

Zhang¹,

Katiyar²,

Zhu³

et al. 2020

Preprint

View full text Add to dashboard Cite

show abstract

“…There were 2 studies located in India and all showed decreased SO 2 concentrations during lockdown. Research in Delhi India shows a 19% decrease in SO 2 when compared to pre-lockdown data (16). In addition, an effort to reduce SO 2 concentrations can be done by expanding green open space.…”

Section: The Effect Of Lockdown On the Covid19 Pandemic Period On Sulmentioning

confidence: 99%

“…This research is in line with research conducted in Delhi, India. The lockdown policy (March 25 -April 15, 2020) can cause a reduction in PM 10 concentration by 55% when compared to pre-lockdown (March 01 -March 24, 2020) (16). Meanwhile, there are other studies whose data were analyzed in the same period in different years from research in Delhi India, PM 10 concentrations decreased by 60%.…”

Section: The Effect Of Lockdown On the Covid19 Pandemic Period On Parmentioning

confidence: 99%

“…This research is in line with research conducted in Delhi, India. The lockdown policy (March 25 -April 15, 2020) can cause a reduction in NO 2 concentration by 60% when compared to pre-lockdown (March 01 -March 24, 2020) (16).This happened due to the effect of the lockdown policy so that had made activity and mobilization of the community was stopped. The increase in NO 2 concentration is directly correlated to the number of vehicles (22).…”

Section: The Effect Of Lockdown On the Covid19 Pandemic Period On Nitmentioning

confidence: 99%

See 1 more Smart Citation

Study Literature Review : The Effect of Lockdown on the Covid19 Pandemic Period on Air Quality

Zahro

2020

JKL

View full text Add to dashboard Cite

Introduction: Covid19 is an infectious disease caused by the corona virus. This virus was first detected in Wuhan China. Covid19 has been defined as pandemic by the World Health Organization (WHO) since March 11, 2020. So there needs to be a policy to overcome the pandemic by implementing lockdown. The effect on the health sector one of which is environmental health includes air quality. The purpose of this literature review study is to determine the effect of the lockdown policy during the Covid19 pandemic on air quality parameters. Discussion: This research used a narrative literature review method. Selected journals that match the topic and inclusion criteria. The results of data analysis show that there is an effect of the lockdown policy during the Covid19 pandemic, namely an increase in AQI and O3 . Meanwhile, decreased concentration occurs in the PM10; PM2.5; NO2 ; CO; and SO2 parameters. Conclusion: Lockdown policy provided a big influence on the air quality in Sale City Marocco and Sao Paulo Brazil. Lockdown policies during the Covid19 period strongly influenced the concentration of NO2 .6

show abstract

“…For instance, NO 2 is one of the harmful air pollutant gases which might be responsible for causing chronic obstructive pulmonary disease (COPD) (Abbey et al 1993;Euler et al 1988), (Shin et al 2020), heart diseases (Gan et al 2012;Mann et al 2002), diabetes (Shin et al 2020), lung injuries (Bowatte et al 2017), and even death in humans, which can make them susceptible to various respiratory viruses or syndromes. In the current pandemic situation, many studies are carried out to analyse that NO 2 could be one of the responsible factors for COVID-19 fatality (Baldasano 2020;Dutheil et al 2020;Frontera et al 2020;Kumari and Toshniwal 2020;Nakada and Urban 2020;Ogen 2020;Pansini and Fornacca 2020;Ranjan et al 2020;Zoran et al 2020).…”

Section: Google Earth Enginementioning

confidence: 99%

Review of Geospatial Technology for Infectious Disease Surveillance: Use Case on COVID-19

Saran

Singh

Kumar

et al. 2020

J Indian Soc Remote Sens

View full text Add to dashboard Cite

This paper discusses on the increasing relevancy of geospatial technologies such as geographic information system (GIS) in the public health domain, particularly for the infectious disease surveillance and modelling strategies. Traditionally, the disease mapping tasks have faced many challenges-(1) authors rarely documented the evidence that were used to create map, (2) before evolution of GIS, many errors aroused in mapping tasks which were expanded extremely at global scales, and (3) there were no fidelity assessment of maps which resulted in inaccurate precision. This study on infectious diseases geo-surveillance is divided into four broad sections with emphasis on handling geographical and temporal issues to help in public health decision-making and planning policies: (1) geospatial mapping of diseases using its spatial and temporal information to understand their behaviour across geography; (2) the citizen's involvement as volunteers in giving health and disease data to assess the critical situation for disease's spread and prevention in neighbourhood effect; (3) scientific analysis of health-related behaviour using mathematical epidemiological and geo-statistical approaches with (4) capacity building program. To illustrate each theme, recent case studies are cited and case studies are performed on COVID-19 to demonstrate selected models.

show abstract

Impact of lockdown measures during COVID-19 on air quality– A case study of India

Cited by 170 publications

References 7 publications

Impact of reduced anthropogenic emissions during COVID-19 on air quality in India

Impact of reduced anthropogenic emissions during COVID-19 on air quality in India

Study Literature Review : The Effect of Lockdown on the Covid19 Pandemic Period on Air Quality

Review of Geospatial Technology for Infectious Disease Surveillance: Use Case on COVID-19

Contact Info

Product

Resources

About