Impact of COVID-19 related shutdown on atmospheric carbon dioxide level in the city of Kolkata

Abhijit Mitra, Tanmay Ray Chaudhuri, Ankita Mitra, Prosenjit Pramanick, Sufia Zaman

2020Zenodo (CERN European Organization for Nuclear Research)80 citationsDOI Open Access PDF

Abstract

We studied the atmospheric CO2 levels at 12 sites in the city of Kolkata during April, 2019 (pre-COVID-19 phase) and April, 2020 (lockdown phase due to COVID-19). Significant temporal variation of CO2 level was observed (p < 0.01), but no statistically significant variation was observed between sites. The interpretation of the results can be substantiated with the lockdown effect due to COVID-19 in the city on account of complete closure of industries, transports, markets, shopping malls, recreation units, construction works etc. which are the main sources of CO2 emission. The patchy vegetation in some pockets of the city (like Deshbandhu Park and Tala Park) did not allow the atmospheric CO2 level to have a deep dip as the previous CO2 level in these sites were not very high due to carbon storage potential of the floral species.

Topics & Concepts

Coronavirus disease 2019 (COVID-19)ShutdownCarbon dioxideCarbon dioxide in Earth's atmosphereSevere acute respiratory syndrome coronavirus 2 (SARS-CoV-2)2019-20 coronavirus outbreakEnvironmental scienceAtmospheric sciencesMeteorologyMedicineGeographyNuclear engineeringEngineeringChemistryVirologyInternal medicinePhysicsOrganic chemistryDiseaseOutbreakInfectious disease (medical specialty)COVID-19 impact on air quality