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If it were, it'd be insignificant.
There is a reason why sai has always been presented as using balloons with hoses connected in order to pump the stuff up there.
Why do you think that is?
It's because that's the only practical way to get the volume of material needed to do the job, up there.
I'm not so sure about that.
"The researchers report that the 'diurnal temperature range was statistically significantly reduced at outbreak stations versus non-outbreak stations.' In the South, this amounted to about a 6 degree Fahrenheit reduction in daily temperature range, while in the Midwest, there was about a 5 degree Fahrenheit reduction."
Jet contrails affect surface temperatures
news.psu.eduUNIVERSITY PARK, Pa. -- High in the sky where the cirrus ice crystal clouds form, jet contrails draw their crisscross patterns. Now researchers have found that these elevated ice cloud trails can influence temperatures on the ground and affect local climate, according to a team of...
criticalunity.org
Any additive in the fuel would necessarily need to combust, otherwise it would reduce their range.
If I replace 10% of the gas in your car's tank with a non combustible poison that I want spraying out your exhaust pipe, will your car not get 10% less fuel economy out of a tank of gas?
The same thing applies to jet fuel.
Perhaps all it is, is that some particular additive simply produces better nucleation points?
Think about the Thunderbirds or the Blue Angels, how much does the smoke they use reduce their range? I agree that it does, but you don't need a lot of nuclei for condensation to form. We have documentation that contrails (artificial cirrus) do lower daytime surface temperatures via reduced solar radiation. I'm not claiming it's a plot. But, in fact, I don't know that it isn't.
Just to back track and review why this conversation about "chemtrails" exists. Starting in the 1990s, many people claim they witnessed more prolific, and longer-lasting contrails appear. Whether it's real or imagined, I also recall noticing more
contrails around that time. What are the possible reasons for this?
A. Air traffic increased, so more planes were in the air.
B. Airlines were in the process of phasing out turbojet engines in favor of turbofan engines.
C. A new fuel additive was put into Jet A-1.
D. All of the above.
E. Something else.
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