Articles | Volume 15, issue 5
https://doi.org/10.5194/amt-15-1415-2022
https://doi.org/10.5194/amt-15-1415-2022
Research article
 | 
16 Mar 2022
Research article |  | 16 Mar 2022

Improved monitoring of shipping NO2 with TROPOMI: decreasing NOx emissions in European seas during the COVID-19 pandemic

Tobias Christoph Valentin Werner Riess, Klaas Folkert Boersma, Jasper van Vliet, Wouter Peters, Maarten Sneep, Henk Eskes, and Jos van Geffen

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Peer review completion

AR: Author's response | RR: Referee report | ED: Editor decision | EF: Editorial file upload
AR by Christoph Rieß on behalf of the Authors (14 Jan 2022)  Author's response   Author's tracked changes   Manuscript 
ED: Referee Nomination & Report Request started (20 Jan 2022) by Natalya Kramarova
RR by Anonymous Referee #2 (31 Jan 2022)
RR by Anonymous Referee #1 (04 Feb 2022)
ED: Publish as is (10 Feb 2022) by Natalya Kramarova
AR by Christoph Rieß on behalf of the Authors (16 Feb 2022)  Manuscript 
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Short summary
This paper reports on improved monitoring of ship nitrogen oxide emissions by TROPOMI. With its fantastic resolution we can identify lanes of ship nitrogen dioxide (NO2) pollution not detected from space before. The quality of TROPOMI NO2 data over sea is improved further by recent upgrades in cloud retrievals and the use of sun glint scenes. Lastly, we study the impact of COVID-19 on ship NO2 in European seas and compare the found reductions to emission estimates gained from ship-specific data.