Birdwatch Note Rating
2024-11-28 14:27:44 UTC - NOT_HELPFUL
Rated by Participant: F53C84B42A45E2782F10482AEC89885EC3F17EF483150D4785A68886DED20B80
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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