Birdwatch Note Rating
2025-02-24 16:37:59 UTC - HELPFUL
Rated by Participant: EB047EBC8B747BB43BD68D0C51957ECACBCA2BA47814A7CCEF8A37A44A54A617
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Original Note:
These are jet engine contrails which have existed since the 1940's when bombers flew over European cities. Contrails will persist if the air is supersaturated and will spread with wind https://www.worldwarphotos.info/gallery/usa/aircrafts-2-3/b-17/384th-bomb-group-b-17-bombers-leaving-contrails-in-sky-on-mission/ FAA Factsheet https://www.epa.gov/sites/default/files/2016-10/documents/afd-051013-001.pdf Scientific study: https://journals.ametsoc.org/view/journals/apme/36/12/1520-0450_1997_036_1725_coacfc_2.0.co_2.xml Flight Tests Conducted on contrail formation: https://www.sciencedirect.com/science/article/abs/pii/S1270963800010622?fbclid=IwY2xjawG1gZtleHRuA2FlbQIxMAABHaLfp_10HANwfCtX-3aNZtMgh-g-1fIYbti-djNgw3PD1D4qUtZbggMiWg_aem_683U9KE70SOEFGjQu_1lAw
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