Re:French lawmakers approve a ban on short domestic flights
by antman on Sunday April 11, 2021 @08:59PM
(#26775116)
If also air distance calculated as the crow flies vs actual car km the numbers will be more air travel favirable
Re:French lawmakers approve a ban on short domestic flights
by lovasoa on Sunday April 11, 2021 @08:09PM
(#26774787)
I think you are comparing unrelated things. The average car ride is thousands of times shorter than the average flight, and transports more than one person. You cannot just compare the average emissions of cars and planes and make the conclusion that it makes sense to choose a plane over a car to reduce your carbon footprint.
And even when you make this comparison with sensible data, the car still wins: https://ourworldindata.org/travel-carbon-footprint
Re:French lawmakers approve a ban on short domestic flights
by lumost on Sunday April 11, 2021 @09:06PM
(#26775150)
when comparing driving to flying between destinations, it's highly likely that the flight will have a shorter duration.
The big wrinkle in this comparison is that planes burn most of their energy in the ascent to cruising speed/altitude. Energy consumption per mile is likely to be much higher on a short hop flight where cruising altitude is never reached than a 12 hour transoceanic flight.
Re:French lawmakers approve a ban on short domestic flights
by asdfasgasdgasdg on Sunday April 11, 2021 @09:25PM
(#26775272)
On the other hand short-haul flights don't climb to as high of altitudes. They only climb about 2/3rds as high. But then again the air is thicker so cruising is less efficient. Oh gosh, for want of data.
> in 2018, CO2 emissions averaged 88 grams of CO2 per revenue passenger per km.
https://en.m.wikipedia.org/wiki/Environmental_impact_of_tran...
> In Europe, the European Commission enforced that from 2015 all new cars registered shall not emit more than an average of 0.130 kg of CO2 per kilometre (kg CO2/km). The target is that by 2021 the average emissions for all new cars is 0.095 kg of CO2 per kilometre.
0.088 < 0.095
That said, the 88 grams figure might not be accurate for short flights. But we'd still be in the same order of magnitude as a car