@Article{acp-21-16237-2021,
AUTHOR = {Clark, H. and Bennouna, Y. and Tsivlidou, M. and Wolff, P. and Sauvage, B. and Barret, B. and Le Flochmo\"en, E. and Blot, R. and Boulanger, D. and Cousin, J.-M. and N\'ed\'elec, P. and Petzold, A. and Thouret, V.},
TITLE = {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},
JOURNAL = {Atmospheric Chemistry and Physics},
VOLUME = {21},
YEAR = {2021},
NUMBER = {21},
PAGES = {16237--16256},
URL = {https://acp.copernicus.org/articles/21/16237/2021/},
DOI = {10.5194/acp-21-16237-2021}
}