Articles | Volume 13, issue 1
https://doi.org/10.5194/amt-13-205-2020
https://doi.org/10.5194/amt-13-205-2020
Research article
 | 
16 Jan 2020
Research article |  | 16 Jan 2020

Comparison of TROPOMI/Sentinel-5 Precursor NO2 observations with ground-based measurements in Helsinki

Iolanda Ialongo, Henrik Virta, Henk Eskes, Jari Hovila, and John Douros

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AR by Iolanda Ialongo on behalf of the Authors (29 Nov 2019)  Author's response    Manuscript
ED: Publish as is (10 Dec 2019) by Ben Veihelmann
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Short summary
New satellite-based nitrogen dioxide (NO2) data from TROPOMI/Sentinel 5P are used to monitor air pollution levels at the urban site of Helsinki, Finland. NO2 is a polluting gas produced by fossil fuel combustion. TROPOMI NO2 data agree with ground-based reference measurements within 10 % and show similar day-to-day and weekly variability. The results confirm that satellite-based observations can bring additional information to traditional in situ measurements for urban air quality monitoring.