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

Clark, Hannah; Bennouna, Yasmine; Tsivlidou, Maria; Wolff, Pawel; Sauvage, Bastien; Barret, Brice; Le Flochmoën, Eric; Blot, Romain; Boulanger, Damien; Cousin, Jean-Marc; Nédélec, Philippe; Petzold, Andreas; Thouret, Valérie

doi:https://doi.org/10.5194/acp-21-16237-2021

Articles | Volume 21, issue 21

https://doi.org/10.5194/acp-21-16237-2021

© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/acp-21-16237-2021

© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 21, issue 21

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, Yasmine Bennouna, Maria Tsivlidou, Pawel Wolff, Bastien Sauvage, Brice Barret, Eric Le Flochmoën, Romain Blot, Damien Boulanger, Jean-Marc Cousin, Philippe Nédélec, Andreas Petzold, and Valérie Thouret

Data sets

IAGOS Data Protal D. Boulanger, V. Thouret, and A. Petzold https://doi.org/10.25326/20

IAGOS Time Series D. Boulanger, U. Bundke, and B. Sauvage https://doi.org/10.25326/06

IAGOS ancillary data (L4) - CO contributions to the aircraft measurements B. Sauvage, P. Nédélec, and D. Boulanger https://doi.org/10.25326/3

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.