Birdwatch Note Rating
2024-11-28 21:34:31 UTC - NOT_HELPFUL
Rated by Participant: B6FF1D611B88BDA77FEF8B3B039AA5261963145D68CBB71832B7E1454F78757E
Participant Details
Original Note:
Persistent contrails occur when the humidity of the atmosphere is high and the contrail ice particles continue to grow by taking up water from the surrounding atmosphere. These can extend for large distances and last for hours. https://www.faa.gov/sites/faa.gov/files/regulations_policies/policy_guidance/envir_policy/contrails.pdf Persistent contrail photos from 1991-1940: https://contrailscience.com/contrail-photos-through-history/
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