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by readthenotes1 254 days ago
There's some anecdata from 9/11

https://globalnews.ca/news/2934513/empty-skies-after-911-set...
1 comments
dylan604 254 days ago
The NASA image does make contrails look much larger than say from the ground, but even in the same image true cloud cover is clearly more complete than all of the contrails combined from the same image
link