Alessia Sannino1, Mariagrazia D’Emilio2, Pasquale Castellano3, Salvatore Amoruso1,4, Antonella Boselli This email address is being protected from spambots. You need JavaScript enabled to view it.2,3 

1 Dipartimento di Fisica “Ettore Pancini”, Complesso Universitario di Monte S. Angelo, I-80126 Napoli, Italy
2 Istituto di Metodologie per l’Analisi Ambientale, Consiglio Nazionale delle Ricerche, I-85050 Tito Scalo-Potenza, Italy
3 ALA Advanced Lidar Applications s.r.l. Corso Meridionale 39, I-80143 Napoli, Italy
4 CNR-SPIN, UOS Napoli, Complesso Universitario di Monte S. Angelo, I-80126 Napoli, Italy


Received: July 7, 2020
Revised: October 2, 2020
Accepted: October 6, 2020

 Copyright The Author(s). This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are cited.


Download Citation: ||https://doi.org/10.4209/aaqr.2020.07.0381  

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Cite this article:

Sannino, A., D’Emilio, M., Castellano, P., Amoruso, S. and Boselli, A. (2020). Analysis of Air Quality during the COVID-19 Pandemic Lockdown in Naples (Italy). Aerosol Air Qual. Res. https://doi.org/10.4209/aaqr.2020.07.0381


HIGHLIGHTS

  • The influence of the lockdown measures on the air quality in Naples was reported.
  • Ground level and remote sensing measures were used to study the effects of lockdown.
  • A drastic reduction of the pollution due to NO2, SO2 and CO was observed.
  • Aerosol properties, derived by remote sensing, change during lockdown period.
 

ABSTRACT


Lockdown measures applied in the aftermath of the COVID-19 pandemic spread to Italy in the period March 13th–May 4th strongly limited the social and industrial activities with consequent effects on the air pollution. Here we report a study on the influence of the lockdown measures on the air quality in the city of Naples (Italy). The comparison of the levels of various gaseous pollutants (C6H6, CO, NO2 and SO2) and particulate matter (PM10, PM2.5, PM1) at ground level as well as of atmospheric aerosol properties registered by remote sensing techniques during the lockdown period with the values observed in the earlier months and during the same period of the previous year is used to gain interesting information on the environmental impact of the human activities. Our findings show a rather significant reduction of the pollution due to NO2 (49-62%) in urban as well as in green suburban area, while CO and SO2 showed a more important reduction in urban or industrial districts of the city (50-58% and 70%, respectively). Particulate matter at ground level is also affected but to a more limited extent (29-49%). Nevertheless, characterization of atmospheric aerosol columnar properties suggests an interesting variation of its composition. The observed features have been associated to the strong meteorological interference from Saharan Dust in the Mediterranean area also affecting the city of Naples.


Keywords: COVID-19; Air quality; Atmospheric aerosols; Particulate matter; Remote sensing.



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