Birdwatch Note Rating
2024-11-28 14:05:36 UTC - HELPFUL
Rated by Participant: 462B2BD928F96190B6F58D9909D3820ACE234FB4F01448F03ABAEB2E7E291550
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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