Birdwatch Note Rating
2024-10-18 13:47:23 UTC - HELPFUL
Rated by Participant: DB058E679FED2DCD9FF09B44836E7BEBDC7D679796A0F44A7C5FD61D1B5059D3
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Original Note:
At 30-40k feet air temperatures range from −40 to −70F (−40 to −57C) https://www.britannica.com/science/temperature-stress When the humidity of the atmosphere is high, the contrail ice particles continue to grow by taking up water from the surrounding atmosphere. These contrails 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
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