Our report includes a factor called radiative forcing, which helps explain why air travel makes up so much of our emissions:
​“Radiative forcing helps organisations account for the wider climate effects of aviation, including water vapour and indirect GHGs. This is an area of active research, which seeks to express the relationship between emissions and climate warming effects of aviation.” - Ekos
We elected to include radiative forcing in our report. This means we apply a multiplier of 1.9 to our air travel emissions.