If I had to guess, I would say I started noticing the lines aprox 20 years ago, perhaps 25.
As a child, neighborhood friends would lay in the grass, often, and try to make shapes out of the passing clouds. Skies were always a bright blue, bright white clouds. Today, the skies are never a bright blue, they always have a white haze, even on the days without the lines. If you look at your horizon, even on a clear day, you will see the haze in the air.
You point out photos of persistent contrails from 1950's. That my friend would be an example of a plane dropping fuel in a risky landing situation where the plane was having flight complications. Those did not happen on a daily basis. There may be photos from the 50's but those were rare situations and cannot be used to explain every day occurrences.
You point out photos of persistent contrails from 1950's
Oh boy. I didn't think you were one of these people fren. Really? You did not even bother to ask me to show you the picture before jumping in with "That my friend would be an example of a plane dropping fuel in a risky landing situation where the plane was having flight complications".
Does this look like a plane making a risky landing? How many times did it make a risky landing? Or rather how many planed did this risky landing ?
If I had to guess, I would say I started noticing the lines aprox 20 years ago, perhaps 25.
As a child, neighborhood friends would lay in the grass, often, and try to make shapes out of the passing clouds. Skies were always a bright blue, bright white clouds. Today, the skies are never a bright blue, they always have a white haze, even on the days without the lines. If you look at your horizon, even on a clear day, you will see the haze in the air.
You point out photos of persistent contrails from 1950's. That my friend would be an example of a plane dropping fuel in a risky landing situation where the plane was having flight complications. Those did not happen on a daily basis. There may be photos from the 50's but those were rare situations and cannot be used to explain every day occurrences.
Oh boy. I didn't think you were one of these people fren. Really? You did not even bother to ask me to show you the picture before jumping in with "That my friend would be an example of a plane dropping fuel in a risky landing situation where the plane was having flight complications".
Does this look like a plane making a risky landing? How many times did it make a risky landing? Or rather how many planed did this risky landing ?
https://imgur.com/a/tY6NuTK
From the book Cloud studies in colour