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That strategy seems to be useful only for flights in the afternoon/evening (depending on how long the contrails persist) and night to avoid trapping radiation b
by almostnormal 3y ago
That strategy seems to be useful only for flights in the afternoon/evening (depending on how long the contrails persist) and night to avoid trapping radiation back to space. But during the day contrails should reflect back to the sun. Optimize routing to create them (only early during the day, so they disappear before it gets dark).
- morsch 3y agoIt's hard to find hard statements on this, but it appears to me that even during the day, the net effect of contrails is warming rather than cooling. E.g. https://phys.org/news/2022-12-airlines-contrails-environmental-problem.html https://phys.org/news/2022-12-airlines-contrails-environment... A small percentage of flights are happening at night, but those are creating the most contrails," Chen said. "And that's the worst time for it to happen." Even contrails during the day are bad, though clouds may be acting to block some sunlight from reaching the surface, Chen said.