Birdwatch Note Rating
2024-11-29 02:07:23 UTC - NOT_HELPFUL
Rated by Participant: A432819F3D07EA5D611A3726341BF23F4D94F2F162DA80500B408135143F0D91
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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