From: Reducing the environmental impact of trials: a comparison of the carbon footprint of the CRASH-1 and CRASH-2 clinical trials
Total short-haul distance
travelled (km/yr)
Uplift factor
(%)
Emissions for short-haul flights
CO2 emitted
(t/yr)
30,249 X
109 X
0.098 kgC02/pass.km=
0.001gCH4/pass.km=
0.004 gN20/pass.km=
3.2 +
3.3 × 10-5 +
1.3 × 105
Total = 3.3