Birdwatch Note Rating
2024-11-29 13:08:01 UTC - NOT_HELPFUL
Rated by Participant: B4436F533B3DA5BA5B61574EC8A43E660E4A3CB5EB638318015D88646629CE58
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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