Articles | Volume 21, issue 21
Atmos. Chem. Phys., 21, 16237–16256, 2021
https://doi.org/10.5194/acp-21-16237-2021
Atmos. Chem. Phys., 21, 16237–16256, 2021
https://doi.org/10.5194/acp-21-16237-2021
Research article
05 Nov 2021
Research article | 05 Nov 2021

The effects of the COVID-19 lockdowns on the composition of the troposphere as seen by In-service Aircraft for a Global Observing System (IAGOS) at Frankfurt

Hannah Clark et al.

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Latest update: 26 Jun 2022
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Short summary
We examined 27 years of IAGOS (In-service Aircraft for a Global Observing System) profiles at Frankfurt to see if there were unusual features during the spring of 2020 related to COVID-19 lockdowns in Europe. Increased ozone near the surface was partly linked to the reduction in emissions. Carbon monoxide decreased near the surface, but the impact of the lockdowns was offset by polluted air masses from elsewhere. There were small reductions in ozone and carbon monoxide in the free troposphere.
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