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Unveiling the changes in urban atmospheric CO(2) in the time of COVID-19 pandemic: A case study of Florence (Italy)

The outbreak of COVID-19 pandemic was accompanied by global mobility restrictions and slowdown in manufacturing activities. Accordingly, cities experienced a significant decrease of CO(2) emissions. In this study, continuous measurements of CO(2) fluxes, atmospheric CO(2) concentrations and δ(13)C-C...

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Autores principales: Venturi, Stefania, Randazzo, Antonio, Tassi, Franco, Gioli, Beniamino, Buccianti, Antonella, Gualtieri, Giovanni, Capecchiacci, Francesco, Cabassi, Jacopo, Brilli, Lorenzo, Carotenuto, Federico, Santi, Riccardo, Vagnoli, Carolina, Zaldei, Alessandro, Vaselli, Orlando
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Elsevier B.V. 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8254387/
https://www.ncbi.nlm.nih.gov/pubmed/34252774
http://dx.doi.org/10.1016/j.scitotenv.2021.148877
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author Venturi, Stefania
Randazzo, Antonio
Tassi, Franco
Gioli, Beniamino
Buccianti, Antonella
Gualtieri, Giovanni
Capecchiacci, Francesco
Cabassi, Jacopo
Brilli, Lorenzo
Carotenuto, Federico
Santi, Riccardo
Vagnoli, Carolina
Zaldei, Alessandro
Vaselli, Orlando
author_facet Venturi, Stefania
Randazzo, Antonio
Tassi, Franco
Gioli, Beniamino
Buccianti, Antonella
Gualtieri, Giovanni
Capecchiacci, Francesco
Cabassi, Jacopo
Brilli, Lorenzo
Carotenuto, Federico
Santi, Riccardo
Vagnoli, Carolina
Zaldei, Alessandro
Vaselli, Orlando
author_sort Venturi, Stefania
collection PubMed
description The outbreak of COVID-19 pandemic was accompanied by global mobility restrictions and slowdown in manufacturing activities. Accordingly, cities experienced a significant decrease of CO(2) emissions. In this study, continuous measurements of CO(2) fluxes, atmospheric CO(2) concentrations and δ(13)C-CO(2) values were performed in the historical center of Florence (Italy) before, during and after the almost two-month long national lockdown. The temporal trends of the analyzed parameters, combined with the variations in emitting source categories (from inventory data), evidenced a fast response of flux measurements to variations in the strength of the emitting sources. Similarly, the δ(13)C-CO(2) values recorded the change in the prevailing sources contributing to urban atmospheric CO(2), confirming the effectiveness of carbon isotopic data as geochemical tracers for identifying and quantifying the relative contributions of emitting sources. Although the direct impact of restriction measurements on CO(2) concentrations was less clear due to seasonal trends and background fluctuations, an in-depth analysis of the daily local CO(2) enhancement with respect to the background values revealed a progressive decrease throughout the lockdown phase at the end of the heating season (>10 ppm), followed by a net increase (ca. 5 ppm) with the resumption of traffic. Finally, the investigation of the shape of the frequency distribution of the analyzed variables revealed interesting aspects concerning the dynamics of the systems.
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spelling pubmed-82543872021-07-06 Unveiling the changes in urban atmospheric CO(2) in the time of COVID-19 pandemic: A case study of Florence (Italy) Venturi, Stefania Randazzo, Antonio Tassi, Franco Gioli, Beniamino Buccianti, Antonella Gualtieri, Giovanni Capecchiacci, Francesco Cabassi, Jacopo Brilli, Lorenzo Carotenuto, Federico Santi, Riccardo Vagnoli, Carolina Zaldei, Alessandro Vaselli, Orlando Sci Total Environ Article The outbreak of COVID-19 pandemic was accompanied by global mobility restrictions and slowdown in manufacturing activities. Accordingly, cities experienced a significant decrease of CO(2) emissions. In this study, continuous measurements of CO(2) fluxes, atmospheric CO(2) concentrations and δ(13)C-CO(2) values were performed in the historical center of Florence (Italy) before, during and after the almost two-month long national lockdown. The temporal trends of the analyzed parameters, combined with the variations in emitting source categories (from inventory data), evidenced a fast response of flux measurements to variations in the strength of the emitting sources. Similarly, the δ(13)C-CO(2) values recorded the change in the prevailing sources contributing to urban atmospheric CO(2), confirming the effectiveness of carbon isotopic data as geochemical tracers for identifying and quantifying the relative contributions of emitting sources. Although the direct impact of restriction measurements on CO(2) concentrations was less clear due to seasonal trends and background fluctuations, an in-depth analysis of the daily local CO(2) enhancement with respect to the background values revealed a progressive decrease throughout the lockdown phase at the end of the heating season (>10 ppm), followed by a net increase (ca. 5 ppm) with the resumption of traffic. Finally, the investigation of the shape of the frequency distribution of the analyzed variables revealed interesting aspects concerning the dynamics of the systems. Elsevier B.V. 2021-11-15 2021-07-03 /pmc/articles/PMC8254387/ /pubmed/34252774 http://dx.doi.org/10.1016/j.scitotenv.2021.148877 Text en © 2021 Elsevier B.V. All rights reserved. Since January 2020 Elsevier has created a COVID-19 resource centre with free information in English and Mandarin on the novel coronavirus COVID-19. The COVID-19 resource centre is hosted on Elsevier Connect, the company's public news and information website. Elsevier hereby grants permission to make all its COVID-19-related research that is available on the COVID-19 resource centre - including this research content - immediately available in PubMed Central and other publicly funded repositories, such as the WHO COVID database with rights for unrestricted research re-use and analyses in any form or by any means with acknowledgement of the original source. These permissions are granted for free by Elsevier for as long as the COVID-19 resource centre remains active.
spellingShingle Article
Venturi, Stefania
Randazzo, Antonio
Tassi, Franco
Gioli, Beniamino
Buccianti, Antonella
Gualtieri, Giovanni
Capecchiacci, Francesco
Cabassi, Jacopo
Brilli, Lorenzo
Carotenuto, Federico
Santi, Riccardo
Vagnoli, Carolina
Zaldei, Alessandro
Vaselli, Orlando
Unveiling the changes in urban atmospheric CO(2) in the time of COVID-19 pandemic: A case study of Florence (Italy)
title Unveiling the changes in urban atmospheric CO(2) in the time of COVID-19 pandemic: A case study of Florence (Italy)
title_full Unveiling the changes in urban atmospheric CO(2) in the time of COVID-19 pandemic: A case study of Florence (Italy)
title_fullStr Unveiling the changes in urban atmospheric CO(2) in the time of COVID-19 pandemic: A case study of Florence (Italy)
title_full_unstemmed Unveiling the changes in urban atmospheric CO(2) in the time of COVID-19 pandemic: A case study of Florence (Italy)
title_short Unveiling the changes in urban atmospheric CO(2) in the time of COVID-19 pandemic: A case study of Florence (Italy)
title_sort unveiling the changes in urban atmospheric co(2) in the time of covid-19 pandemic: a case study of florence (italy)
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8254387/
https://www.ncbi.nlm.nih.gov/pubmed/34252774
http://dx.doi.org/10.1016/j.scitotenv.2021.148877
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