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Comment by cjr | Hacker News Reader

3.93 megatons of CO2 is roughly equivalent to:

  • About 149,714 short-haul flights, or
  • About 37,429 long-haul flights.

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so what I am hearing is that short-haul flights are ~24% as far as long-haul flights.

Weird use of segmented flight lengths as a comparator

Short haul flights use proportionally more fuel per mile flown because taking off is very fuel intensive. That said, no idea what average value the GP comment is basing their numbers off of.

Take off, climb and circles before landng time use considerably more fuel than that of cruising time, so that needs to be considered. Also, as short haul fights generally don't climb as high, they lose the benefits of high altitude cruising.

Are those figures the wrong way around?

So a couple of days' worth?

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