Birdwatch Note Rating
2024-11-28 14:15:36 UTC - NOT_HELPFUL
Rated by Participant: 77EA25C64059C74742D321932264CD8156B3005FA1BFEC66061B313018011FAA
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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