Birdwatch Note Rating
2024-11-28 14:10:27 UTC - HELPFUL
Rated by Participant: 4505B3C54D70EC4BC20D81257238D524918A4F4882FFE18AE958B842742BB079
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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