Birdwatch Note Rating
2024-10-15 12:52:29 UTC - HELPFUL
Rated by Participant: 4DA348B32C418096EBB987247A63055C91A7B6C65C3127ABAC4CF89B40ADB827
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Original Note:
This often posted Air Canada flight shows an aerodynamic contrail. It forms at a precise combination of pressure/temp/RH. The conditions change gradually, but there is an exact point where the formation will cease. https://opensky.ucar.edu/islandora/object/articles:16921 https://www.researchgate.net/publication/225001396_Aerodynamic_Contrails_Phenomenology_and_Flow_Physics http://ui.adsabs.harvard.edu/abs/2013ACP....1310847G/abstract
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