Contrails (not to be confused with chemtrails) and nitrogen oxides (NOₓ) account for the majority of the climate impacts of aviation.
Global aviation contrail climate effects from 2019 to 2021
Abstract. The current best-estimate of the global annual mean radiative forcing (RF) attributable to contrail cirrus is thought to be 3 times larger than the RF from aviation's cumulative CO2 emission...
