With so much going on I am sorry you choose to see a conspiracy of evil in something as innocuous as water vapor... and what is also interesting is the fact we had this same discussion 2 or 3 years ago.
1: All jets leave a trail of water vapor. If the upper air (30=40K) is relatively dry, the water vapor evaporates quickly and the jet's contrail will be short in length and short in duration - or might not form at all.
2: If the upper air is relatively moist, the contrails will not easily evaporate (actually sublimate since contrails quickly freeze) and can easily extend for hundreds of miles.
3: Upper winds which often exceed 100 knots can spread contrails and create the look of cirrus clouds.]
4: You said "Skies at 30k feet dont change that much. The air doesnt change much at that alt." I have no idea why you would make that definite statement or why you would believe that. It is categorically false. The ride at altitude is usually smooth but can also be dangerously rough. You might see a jet climbing to altitude where it briefly leaves a visible contrail that appears and disappear. That jet likely climbed through a relatively moist layer of upper air.
You said "Why try so hard to discredit?" Discredit what? or who? You?
This phenomenon was observed and proven long before you or I was even born. Maybe you might want to ask yourself how something that has existed since airplanes started to fly high, has only recently (realtively) become the source of such suspicion.
You guys tried to discredit this airforce whistle blower and say the Florida law is just to give the conspiracy guys some assurance... So there's that. I look up in the sky right now over Orlando and there isnt a cloud nor contrail in the sky. Does that mean no planes are flying at all today? Its 30 degrees outside therefore any plane flying should leave a large contrail at 30k given the temps. Secondly, there are contrails that dissipate a mile or less behind some planes, and in the same sky, a plane with a trail for 70 miles +. Whats the difference? Altitude? Meh.. it shouldn't make that large of a difference. When you are that high, there isnt enough air to create such a trail naturally without it quickly dissipating as ice is heavy and drops to melt. This is not the same as evaporation and condensation that leaks from an air molecule as it shrinks to produce clouds.
Also, explain my picture of Portland that I took myself out of my car window after a full day of contrail spraying. Are you saying thats just natural? Are you saying that these contrail have no impact on the airspace and that my picture doesn't infact prove that these contrails have any effect what so ever?
Btw, I've been recording many pictures of contrails, what I posted are just a couple of examples.
This is what a natural contrail looks like as I took this picture as im typing. So id love to see the real scientific understanding of why today, at 30 degrees outside, a longer contrail isnt forming?
Btw, science was my best subject and I got an A in Weather and Climate with a lab on top of taking major level biology with the hardest teacher ever. So I do know a little bit about science. Weather and Climate was one of my all time favorite classes.
