Would love to see if you kept a journal of photos, videos, weather conditions etc. Otherwise, not very useful for the discussion since contrails can linger for a long time based on atmospheric conditions.
They can but persistent trails used to be rarer than non-persistent. Now they are much more common than non-persistent. I understand non-persistent to mean dissipates within 90 seconds and usually less.
Sorry, I'm not making it clear. There are both persistent and non-persistent contrails known to exist. One of them dissipates in about a minute. The other lasts indefinitely. Any guesses as to which is which?
Would love to see if you kept a journal of photos, videos, weather conditions etc. Otherwise, not very useful for the discussion since contrails can linger for a long time based on atmospheric conditions.
They can but persistent trails used to be rarer than non-persistent. Now they are much more common than non-persistent. I understand non-persistent to mean dissipates within 90 seconds and usually less.
That understanding is wrong, even according to cloud books from as long back as 1957. They can last for hours and sometimes even become clouds.
https://www.youtube.com/watch?v=8D0kX3O0anY
Sorry, I'm not making it clear. There are both persistent and non-persistent contrails known to exist. One of them dissipates in about a minute. The other lasts indefinitely. Any guesses as to which is which?
If you claim there are two different kinds of contrails, go ahead and tell me which is which.