Sudden changes in nitrogen dioxide emissions over Greece due to lockdown after the outbreak of COVID-19

Koukouli, Maria-Elissavet; Skoulidou, Ioanna; Karavias, Andreas; Parcharidis, Isaak; Balis, Dimitris; Manders, Astrid; Segers, Arjo; Eskes, Henk; van Geffen, Jos

doi:https://doi.org/10.5194/acp-21-1759-2021

Articles | Volume 21, issue 3

https://doi.org/10.5194/acp-21-1759-2021

© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/acp-21-1759-2021

© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 21, issue 3

Research article

|

09 Feb 2021

Research article |

| 09 Feb 2021

Sudden changes in nitrogen dioxide emissions over Greece due to lockdown after the outbreak of COVID-19

Maria-Elissavet Koukouli, Ioanna Skoulidou, Andreas Karavias, Isaak Parcharidis, Dimitris Balis, Astrid Manders, Arjo Segers, Henk Eskes, and Jos van Geffen

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Final revised paper (published on 09 Feb 2021)
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Preprint (discussion started on 27 Jul 2020)
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Interactive discussion

Status: closed

AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment

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RC1: 'Review on Koukouli et al.', Anonymous Referee #1, 24 Aug 2020
- AC1: 'Reply on RC1', Maria-Elissavet Koukouli, 29 Dec 2020
RC2: 'Review on 'Sudden changes...' by Koukouli et al. (2020)', Anonymous Referee #2, 19 Oct 2020
- AC2: 'Reply on RC2', Maria-Elissavet Koukouli, 29 Dec 2020

Peer-review completion

AR: Author's response | RR: Referee report | ED: Editor decision

AR by Maria-Elissavet Koukouli on behalf of the Authors (29 Dec 2020)

ED: Publish as is (31 Dec 2020) by Stelios Kazadzis

AR by Maria-Elissavet Koukouli on behalf of the Authors (03 Jan 2021) Manuscript

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Short summary

In recent years, satellite observations have contributed to monitoring air quality. During the first COVID-19 lockdown, lower levels of nitrogen dioxide were observed over Greece by S5P/TROPOMI for March and April 2020 (than the preceding year) due to decreased transport emissions. Taking meteorology into account, using LOTOS-EUROS CTM simulations, the resulting decline due to the lockdown was estimated to range between 0 % and −37 % for the five largest Greek cities, with an average of ~ −10 %.