Significant change in air quality parameters during the year 2020 over 1st smart city of India: Bhubaneswar

Sahu, Saroj Kumar; Tyagi, Bhishma; Beig, Gufran; Mangaraj, Poonam; Pradhan, Chinmay; Khuntia, Shilpa; Singh, Vikas

doi:10.1007/s42452-020-03831-7

Cited by 15 publications

(13 citation statements)

References 29 publications

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“…For the percentage change in AOD during lockdown, most of India show a decrease in AOD (∼25%); however, the western (Maharashtra), central (Chhattisgarh and Madhya Pradesh) and eastern regions (Odisha, West Bengal, and Jharkhand) show increased values (between 25 and 50%). Similar findings of no reduction in PM 2.5 and PM 10 values during COVID-19 over an eastern India station Bhubaneswar have been reported by Sahu et al. (2020) .…”

Section: Resultssupporting

confidence: 84%

Changing air pollution scenario during COVID-19: Redefining the hotspot regions over India

Tyagi

Choudhury

Vissa

et al. 2021

Environmental Pollution

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Section: Resultssupporting

confidence: 84%

Changing air pollution scenario during COVID-19: Redefining the hotspot regions over India

Tyagi

Choudhury

Vissa

et al. 2021

Environmental Pollution

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“…An increment of 3% in O3 concentration was also found during the 22nd March-14th April 2020 over the past weeks (1st -21st Mar 2020) at Bhubaneswar [18]. Similarly, an 12% increment in O3 concentration was reported during Mar-May 2020 over 2019 [37]. O3 concentration enhancement is also observed at the commercial (Teynampat) and residential (Velachery) sites of Chennai by 48 and 5% respectively [29] Discomfort in breathing for older people having a co-morbid system such as asthma, lung disease, heart disease.…”

Section: Ozone (O3)mentioning

confidence: 65%

“…Studies over western India during the lockdown revealed a plummet of $21% and 25% over Pune and Gujrat respectively, during 2020 in comparison to the same period during 2019, while no significant change is observed at Mumbai [38,62]. Over Bhubaneswar, the eastern coastal city showed a reduction of $14% in CO concentration during complete lockdown period compared to the earlier lockdown period (1st Mar-23rd Mar 2020) whereas it showed a diminution of 11.1% during March-May 2020 compared to the previous year of the same time [18,37]. A lower reduction of CO compared to the early phase of lockdown might be attributed to its long residence time in the atmosphere.…”

Section: Carbon Monoxide (Co)mentioning

confidence: 83%

“…A significant plummet in average NOx concentration is also observed on the eastern coast of India. Studies over Bhubaneswar revealed that average NOx concentration decreased by $67% during quarantine days (24th Mar-31st May 2020) compared to pre-lockdown (1st -23rd Mar 2020) whereas 12.3% during Mar-May 2020 in comparison to 2019 of the same period [18,37]. Similarly, NO and NO2 reduced by $55 and 59% respectively, over Gadanki during lockdown with respect to 2019 [36].…”

Section: Nitrogen Oxides (Nox)mentioning

confidence: 97%

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COVID-19 Lockdown and the Aerosphere in India: Lessons Learned on How to Reduce Air Pollution

Panda¹,

Satpathy²,

Das³

et al. 2022

Biotechnology to Combat COVID-19

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The giant increase in COVID-19 infection across India forced the government to impose strict lockdown in order to curb the pandemic. Although the stringent restrictions crippled India’s economy and poor people’s livelihood, it significantly improved the air quality of most of the polluted cities of India and rejuvenated the atmosphere. Thus, the major objective of this study is to provide a comprehensive overview of lockdown on pollutants prevailing in the atmosphere. A prominent decline in primary pollutants such as Particulate matter (PM), Black carbon (BC), Oxides of nitrogen (NOx), Carbon monoxide (CO) is observed across the country. However, lockdown had a trifling impact on Sulphur dioxide (SO2) concentration over some parts of India due to the constant operation of coal-fired thermal plants as a part of essential service. Furthermore, the sudden decline in NOx concentration disturbed the complex atmospheric chemistry and lead to an enhancement of surface ozone (O3) (secondary pollutant) in many cities of India. Thus, lockdown emerged as a unique opportunity for the atmospheric researchers, policymakers as well as stakeholders to collect baseline data of pollutants and their major sources. This will help to set new targets of air quality standards and to develop various mitigation processes to combat air pollution.

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“…The year 2020 encountered the unfortunate pandemic situation of COVID-19 spread world-wide, with a halt to industrial and transportation sectors due to lockdown for preventing the virus spread and unexpected recovery of air quality globally [14]. The Pollutants 2021, 1 128 Indian region also benefits from improved air quality [15][16][17], though different regions show improvement in various pollutants by a different magnitude. The pandemic hit year also presents a unique opportunity to understand the background values of various pollutants over different regions in real scenarios [18] and understand the changing patterns of transported pollution over heavily polluted areas in Delhi.…”

Section: Introductionmentioning

confidence: 99%

Reviewing the Crop Residual Burning and Aerosol Variations during the COVID-19 Pandemic Hit Year 2020 over North India

et al. 2021

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The north Indian states of Haryana and Punjab are believed to be the key sources of air pollution in the National Capital Region due to massive agricultural waste burning in crop harvesting seasons. However, with the pandemic COVID-19 hitting the country, the usual practices were disrupted. COVID-19 preventive lockdown led to restricted vehicular and industrial emissions and caused the labours to leave the agricultural business in Haryana and Punjab. With the changed scenario of 2020, the present study investigates the variations in air quality over the Haryana and Punjab, and their relative impact on the air quality of Delhi. The work attempts to understand the change in agricultural waste burning during 2020 and its implication on the local air quality over both the states and the transported pollution on the national capital Delhi. The study utilises in-situ data for the year 2019–2020 with satellite observations of MODIS aqua/terra for fire counts, aerosol optical depth (AOD) and back-trajectories run by the hybrid single-particle Lagrangian integrated trajectory model (HYSPLIT).

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Significant change in air quality parameters during the year 2020 over 1st smart city of India: Bhubaneswar

Cited by 15 publications

References 29 publications

Changing air pollution scenario during COVID-19: Redefining the hotspot regions over India

Changing air pollution scenario during COVID-19: Redefining the hotspot regions over India

COVID-19 Lockdown and the Aerosphere in India: Lessons Learned on How to Reduce Air Pollution

Reviewing the Crop Residual Burning and Aerosol Variations during the COVID-19 Pandemic Hit Year 2020 over North India

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