Theres two modes of formation as far as I know. Nucleation from droplets of water from a jet engines exhaust and formation of vapour within vortices forming around propellers (photo above) ailerons etc. Ones formed, they are just ordinary cirrus clouds. They hang around because they are ice crystals, not water droplets (oversimplification). The physics makes sense.
We get them in New Zealand, but with much less air traffic, its usually just one or two at a time. They can hang around a long time.
As Camacho said, doesn't disprove the existence of chemtrails, just saying long lasting contrails are viable.
We get them in New Zealand, but with much less air traffic, its usually just one or two at a time. They can hang around a long time.
As Camacho said, doesn't disprove the existence of chemtrails, just saying long lasting contrails are viable.
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