Birdwatch Archive

Birdwatch Note Rating

2024-05-06 12:01:48 UTC - HELPFUL

Rated by Participant: 53D557F48B5F76F3317D92DAA0CFA3A269DCBA871B8E138F7CD66628410E3039
Participant Details

Original Note:

The temperature at the height where contrails form is typically below -40 degrees Celsius. Contrails will persist for as long as the surrounding air is ice supersaturated, that is, the humidity via greater than 100% relative to ice, or about 60-70% relative to water. https://scool.larc.nasa.gov/pdf/Contrail_ID_Chart_English_2013_v18_copy.pdf

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All Information

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