Birdwatch Note Rating
2024-11-30 16:30:01 UTC - HELPFUL
Rated by Participant: 4F9491C8A2322303E56FF648F7918AE438F7628043D05B8F2E8FBA8F999CDD30
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 may last for hours. https://www.faa.gov/sites/faa.gov/files/regulations_policies/policy_guidance/envir_policy/contrails.pdf Persistent contrail photos through history: https://contrailscience.com/contrail-photos-through-history/
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