Birdwatch Note Rating
2024-11-29 04:23:38 UTC - NOT_HELPFUL
Rated by Participant: 4FB97661F5771B85090954C594D961286112C7B4D608DB0CA8474D6841056781
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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