alt Hacker NewsThey don’t cause net warming, it’s transient. If we stopped flying tomorrow it would go away quickly. But we keep flying.
But even with that the amount of warming this continuous effect creates is quite small and negligible compared to greenhouse gas warming and isn’t really worth talking about.
I think this link hit HN in part due to the new Simon Clark video on contrails which mentioned it. Simon discusses the claim that contrails can be avoided for a small fuel penalty, reducing the overall effect on climate change a given flight would have. Apparently some airlines are already exploring this and Google includes contrail impact estimates on their flight search. So maybe it is worth talking about.
https://youtu.be/QoOVqQ5sa08