Birdwatch Note Rating
2024-11-07 17:45:02 UTC - HELPFUL
Rated by Participant: E1B8FFE3656E289C22EEA763842FE6DDF08E798B42E962F97418C0DE56306F97
Participant Details
Original Note:
In supersaturated air, ice crystals in an aircraft’s contrail can't sublimate back into vapour. Instead, they grow as excess moisture condenses onto them, causing the contrail to persist and even expand, forming a visible trail that lasts much longer than in drier air. https://www.metlink.org/fieldwork-resource/contrails/ https://www.globe.gov/web/s-cool/home/observation-and-reporting/contrails/persistent-contrails https://scied.ucar.edu/image/persistent-spreading-contrails
All Note Details