Xavier Fageda from the Department of Economic Policy of the Universitat de Barcelona and I, Achim I. Czerny from the Department of Logistics and Maritime Studies of The Hong Kong Polytechnic University, discuss a set of Xavier's recent studies assessing the role of the EU ETS for airline behavior in terms of passengers served, frequencies offered, and technology diffusion. These are the details of two of the four studies presented by Xavier (please contact him directly if you are interested in receiving the working-paper versions of the other two studies which are work-in-progress):

"Pricing carbon in the aviation sector: Evidence from the European emissions trading system," joint with J. J. Teixidó: https://doi.org/10.1016/j.jeem.2021.102591

"The impact of carbon pricing on tourist destinations: Shifts in demand, supply and emissions in the European aviation market," joint paper with Katrin Oesingmann: https://doi.org/10.1016/j.ecotra.2025.100414