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Nitrogen dioxide decline and rebound observed by GOME-2 and TROPOMI during COVID-19 pandemic

Liu, Song and Valks, Pieter and Beirle, Steffen and Loyola, Diego (2021) Nitrogen dioxide decline and rebound observed by GOME-2 and TROPOMI during COVID-19 pandemic. Air Quality, Atmosphere and Health, 14, pp. 1737-1755. Springer. doi: 10.1007/s11869-021-01046-2. ISSN 1873-9318.

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Official URL: https://link.springer.com/article/10.1007/s11869-021-01046-2


Since its first confirmed case in December 2019, coronavirus disease 2019 (COVID-19) has become a worldwide pandemic with more than 90 million confirmed cases by January 2021. Countries around the world have enforced lockdown measures to prevent the spread of the virus, introducing a temporal change of air pollutants such as nitrogen dioxide (NO2) that are strongly related to transportation, industry, and energy. In this study, NO2 variations over regions with strong responses to COVID-19 are analysed using datasets from the Global Ozone Monitoring Experiment-2 (GOME-2) sensor aboard the EUMETSAT Metop satellites and TROPOspheric Monitoring Instrument (TROPOMI) aboard the EU/ESA Sentinel-5 Precursor satellite. The global GOME-2 and TROPOMI NO2 datasets are generated at the German Aerospace Center (DLR) using harmonized retrieval algorithms; potential influences of the long-term trend and seasonal cycle, as well as the short-term meteorological variation, are taken into account statistically. We present the application of the GOME-2 data to analyze the lockdown-related NO2 variations for morning conditions. Consistent NO2 variations are observed for the GOME-2 measurements and the early afternoon TROPOMI data: regions with strong social responses to COVID-19 in Asia, Europe, North America, and South America show strong NO2 reductions of 30–50% on average due to restriction of social and economic activities, followed by a gradual rebound with lifted restriction measures.

Item URL in elib:https://elib.dlr.de/143767/
Document Type:Article
Title:Nitrogen dioxide decline and rebound observed by GOME-2 and TROPOMI during COVID-19 pandemic
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Liu, SongSong.Liu (at) dlr.deUNSPECIFIED
Valks, PieterPieter.Valks (at) dlr.deUNSPECIFIED
Beirle, Steffensteffen.beirle (at) mpic.deUNSPECIFIED
Loyola, DiegoDiego.Loyola (at) dlr.dehttps://orcid.org/0000-0002-8547-9350
Date:28 August 2021
Journal or Publication Title:Air Quality, Atmosphere and Health
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:Yes
DOI :10.1007/s11869-021-01046-2
Page Range:pp. 1737-1755
Keywords:COVID-19, Tropospheric NO2, GOME-2, TROPOMI, Harmonized retrieval
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Earth Observation
DLR - Research area:Raumfahrt
DLR - Program:R EO - Earth Observation
DLR - Research theme (Project):R - Atmospheric and climate research
Location: Oberpfaffenhofen
Institutes and Institutions:Remote Sensing Technology Institute > Atmospheric Processors
Deposited By: Valks, Dr. Pieter
Deposited On:14 Sep 2021 12:40
Last Modified:30 Nov 2021 17:38

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