Record low ozone values over the Arctic in boreal spring 2020

• Published in: Atmospheric Chemistry and Physics
• Main Authors: Dameris, Martin, Loyola, Diego, Nützel, Matthias, Coldewey-Egbers, Melanie, Lerot, Christophe, Romahn, Fabian, Van Roozendael, Michel
• Format: Article in Journal/Newspaper
• Language: English
• Published: Copernicus Publications 2021
• Subjects: Dynamik der Atmosphäre; Atmosphärenprozessoren; Antarctic; Arctic; The Sentinel; Antarc*
• Online Access: https://elib.dlr.de/140554/; https://elib.dlr.de/140554/1/Dameris_et_al_2021.pdf; https://doi.org/10.5194/acp-21-617-2021

. Ozone data derived from the Tropospheric Monitoring Instrument (TROPOMI) sensor on board the Sentinel- 5 Precursor satellite show exceptionally low total ozone columns in the polar region of the Northern Hemisphere (Arctic) in spring 2020. Minimum total ozone column values around or below 220 Dobson units (DU) were seen over the Arctic for 5 weeks in March and early April 2020. Usually the persistence of such low total ozone column values in spring is only observed in the polar Southern Hemisphere (Antarctic) and not over the Arctic.