I mean it’s slightly better. The worst effect is still by cloud seeding at flight height. That doesn’t go away with hydrogen.
But to my understanding could even be turned into a beneficial effect otf you changed the flight height of planes, seeding clouds further down. But that makes them less efficient, which isn’t great for hydrogen.
So a better strategy might be to mandate lower flight height and e/bio fuels.
I mean it’s slightly better. The worst effect is still by cloud seeding at flight height. That doesn’t go away with hydrogen.
But to my understanding could even be turned into a beneficial effect otf you changed the flight height of planes, seeding clouds further down. But that makes them less efficient, which isn’t great for hydrogen.
So a better strategy might be to mandate lower flight height and e/bio fuels.
This is a great point and something I don’t think many people are aware of. I believe I’ve heard a stat that states that only 50% the impact of planes on climate change is due to burning fossil fuels, whilst the other 50% is due to cloud seeding. (Source: https://www.bbc.com/future/article/20210525-how-aviation-is-reducing-its-climate-emissions).