The US-China direct flights in mid-2023 were only 7 percent of those available in mid-2019. This quasi-experiment informs the debate on air transport de-carbonization. An estimated structural model shows that re-establishing the pre-pandemic direct connectivity could increase passengers by 387...

An AirSensEUR sensor system equipped with a prototype CO2 low-cost sensor (LCS), model K96 Senseair, has been tested at the Joint Research Centre (JRC) observatory station between December 2021 and September 2022 in order to evaluate whether its expanded measurement uncertainty could meet a Data...