Articles | Volume 22, issue 6
Atmos. Chem. Phys., 22, 4201–4236, 2022
https://doi.org/10.5194/acp-22-4201-2022
Atmos. Chem. Phys., 22, 4201–4236, 2022
https://doi.org/10.5194/acp-22-4201-2022
Research article
31 Mar 2022
Research article | 31 Mar 2022

Quantifying urban, industrial, and background changes in NO2 during the COVID-19 lockdown period based on TROPOMI satellite observations

Vitali Fioletov et al.

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Interactive discussion

Status: closed

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on acp-2021-536', Anonymous Referee #1, 30 Jul 2021
  • RC2: 'New EPA tool of interest to this work', Maria-Elissavet Koukouli, 30 Jul 2021
    • AC1: 'Thank you!', Vitali Fioletov, 13 Jan 2022
  • RC3: 'Comment on acp-2021-536', Anonymous Referee #2, 30 Sep 2021

Peer review completion

AR: Author's response | RR: Referee report | ED: Editor decision
AR by Vitali Fioletov on behalf of the Authors (13 Jan 2022)  Author's response    Author's tracked changes    Manuscript
ED: Referee Nomination & Report Request started (17 Jan 2022) by Tanja Schuck
RR by Anonymous Referee #2 (07 Feb 2022)
RR by Anonymous Referee #1 (08 Feb 2022)
ED: Publish subject to minor revisions (review by editor) (11 Feb 2022) by Tanja Schuck
AR by Vitali Fioletov on behalf of the Authors (18 Feb 2022)  Author's response    Author's tracked changes    Manuscript
ED: Publish as is (28 Feb 2022) by Tanja Schuck
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Short summary
The COVID-19 lockdown had a large impact on anthropogenic emissions and particularly on nitrogen dioxide (NO2). A new method of isolation of background, urban, and industrial components in NO2 is applied to estimate the lockdown impact on each of them. From 16 March to 15 June 2020, urban NO2 declined by −18 % to −28 % in most regions of the world, while background NO2 typically declined by less than −10 %.
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