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The greenhouse gases are typically in the earth's stratosphere at an altitude of seven to thirteen kilometers. This suggests that the particle seeding should be done at an altitude on the order of 10 kilometers. The particles may be seeded by dispersal from seeding aircraft; one exemplary technique may be via the jet fuel as suggested by prior work regarding the metallic particles. Once the tiny particles have been dispersed into the atmosphere, the particles may remain in suspension for up to one year.
Originally posted by dplum517
Via the Jet Fuel.
Could explain why some trails look to be coming directly from the engine.
Originally posted by Aloysius the Gaul
Edit: Actually I'm a little confused by what the OP is actually asking - surely what is in the trail is important to how it will be visible and how it will react with the environment??edit on 2-2-2012 by Aloysius the Gaul because: (no reason given)
The increased amount of sulfur and other elements in the exhaust are sufficient CCN (cloud condensation nuclei) to create the persistent spreading contrail or AKA chemtrail.
Originally posted by MathiasAndrew
All that is required to create a chemtrail are the right conditions for contrails and a dirty (increased fuel consumption settings) jet exhaust.
(2)(A) The terms ‘‘weapon’’ and ‘‘weapons system’’ mean a device capable of any of the following:
(i) Damaging or destroying an object (whether in outer space, in the atmosphere, or on earth) by—
(II) through the use of land-based, sea-based, or space-based systems using radiation, electromagnetic, psychotronic, sonic, laser, or other energies directed at individual persons or targeted populations for the purpose of information war, mood management, or mind control of such persons or populations; or
(III) by expelling chemical or biological agents in the vicinity of a person.
(B) Such terms include exotic weapons systems such as—
(i) electronic, psychotronic, or information weapons;
(iii) high altitude ultra low frequency weapons systems;
Originally posted by Uncinus
"Consider a 777, at 30 gallons of fuel burned per minute, say that was 1% "metallic particles", that's about 2 pounds of metallic particles per minute, at 500 mph, that's 8 miles/minute, or 42,000 feet per minute, so 2 pound of particles every 42,000 feet, or a density of 0.02 grams per foot.).
Compare that with water vapor, of which the fuel is essentially 130% (adding oxygen), and that growth from ice supersaturation means that's that's only about 1% of the eventual spread contrail.
Meaning a persistent contrail would have about 10,000x the mass of a 1% metallic particle fuel mix.
Now you've see persistent contrails, and how big they can be. How could metallic particles in the fuel look ANYTHING like something that weighs 10,000 times as much".
maximum at the
temperature of delivery
(vi) strategic, theater, tactical, or extraterrestrial weapons