I used the same page :)
The key is it's per ton per km transported.
For reference, Shanghai to Rotterdam route (a bit of a worst case I guess) is just shy of 20000 km[1].
The key is it's per ton per km transported.
For reference, Shanghai to Rotterdam route (a bit of a worst case I guess) is just shy of 20000 km[1].
Airfreight is 500g /tonne/km so 10 tonnes of co2 / tonne of freight.
Guess that's why co2 calculators always ask about flying.
Air freight is not clean indeed. Which leads to a kind of ironic situation here in Norway. Salmon export is hailed as one of the primary income sources once the oil is gone, yet significant portion of the salmon is exported via air to Asian markets. Not exactly a very green change...