This report details a study on whether countries should use certified emission reductions – or CERs – to achieve post-2020 targets under the Paris Agreement. The Clean Development Mechanism is the world’s largest greenhouse gas crediting mechanism and will continue to issue CERs until 2020.
Anthropogenic climate change is expected to strengthen the vertical wind shears at aircraft cruising altitudes within the atmospheric jet streams. Such a strengthening would increase the prevalence of the shear instabilities that generate clear-air turbulence. Climate modelling studies have indicated that the amount of moderate-or-greater clear-air turbulence on transatlantic flight routes in winter will increase significantly in future as the climate changes.