Nitrogen dioxide reductions from satellite and surface observations during COVID-19 mitigation in Rome (Italy).

ABSTRACT: Lockdown restrictions were implemented in Italy from 10 March 2020 to contain the COVID-19 pandemic. Our study aims to evaluate air pollution changes, with focus on nitrogen dioxide (NO₂), before and during the lockdown in Rome and in the surroundings. Significant NO₂ declines were observed during the COVID-19 pandemic with reductions of - 50%, - 34%, and - 20% at urban traffic, urban background, and rural background stations, respectively. Tropospheric NO₂ vertical column density (VCD) from the TROPOspheric Monitoring Instrument (TROPOMI) was used to evaluate the spatial-temporal variations of the NO₂ before and during the lockdown for the entire area where the surface stations are located. The evaluation is concerned with the pixels including o

SUBMITTER: Bassani C 

PROVIDER: S-EPMC7801795 | biostudies-literature | 2021 May

REPOSITORIES: biostudies-literature