Birdwatch Note Rating
2024-11-26 14:15:19 UTC - HELPFUL
Rated by Participant: FD251FAD72B18CDA0653F27E62622209EA65FA3908FECF0264005701A6C1FB0D
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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