Jesus Christ! Contrails dissipate in a few seconds, they don't stay up there all day and turn into silk patterns....
Pedal Power, nothing short of hiring a weather balloon, going up there and taking samples yourself, and spending thousands to have them analyzed in a lab will satisfy these people. And even if you did they would find a way to discredit your findings.
Millions of people observe this and there are hundreds, maybe thousands of websites on this subject, all because of the imaginations of nitwits. Lab findings don't mean anything, because you can't believ the internet. Only when something is on FoxNews is it real. It doesn't matter that these trails didn't happen 20 years ago. Sometime between then and now our atmosphere has changed. Somehow water vapor turns into reflective aluminum oxide particles and a host of pathogens these days.....
Don't even waste any more of your time and energy on these ignoramuses....