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a CONDENSATION trail is formed usually at the edge of a wingtip or other relative sharp area's of a plane and lasts for approximately FIFTEEN SECONDS....
ATR turboprop flight. Interesting spirals of vapour from the blade tips on takeoff as the compression of the air forces the humidity condensing from vapour into liquid phase.
CHEMICAL trails come from the engine turbines of a plane....
.... and form clouds which can en mass entirely cover a portion of the sky.
I should add there are uncountable amounts of rainwater data that show abnormal amounts of barium
Future NASA Aerosol Studies NASA's ongoing Atmospheric Effects of Aviation Project (AEAP) has measured emissions from the engines of several commercial and research aircraft. Jet engine emissions have been shown to affect the concentrations of atmospheric water vapor and aerosols, and they may affect how clouds form and the concentrations of atmospheric ozone. Few actual measurements of their effects have been made, however. In the spring of 1996, the Subsonic Aircraft Contrail and Cloud Effects Special Study (SUCCESS) focused on subsonic aircraft contrails and the impact of the aerosols in those contrails on cirrus clouds and atmospheric chemistry. Researchers have determined that aircraft contrails can prolong the presence of high altitude cirrus clouds while also decreasing the size of the ice crystals that make up the clouds.Studies like SUCCESS and AEAP will be ongoing as scientists continue to try to understand how aerosols affect our atmosphere and climate.
You can prove that contrails exist; You can prove that contrails spread out and form clouds; You can prove that industry pollutes barium into the ground, water, and air.
You can prove that contrails exist
You can prove that contrails spread out and form clouds
You can prove that industry pollutes barium into the ground, water, and air.
Originally posted by Essan
Originally posted by MathiasAndrew
reply to post by Essan
Chemtrails are what we call contrails or manmade cirrus - and they are formed by aircraft flying in the troposphere.
But by all means show me a photograph showing a chemtrail that can be proven not to be in the troposphere (excluding pictures of space shuttles etc)
I didn't have my video camera with me but when I came home this morning from London via DC in our Lear 55, we definitely made a contrail above the tropopause when cruising at 51,000' over Labrador. (I looked when we turned leaving the North Atlantic Track) The troposphere ends at the tropopause which is defined as the altitude where the lapse rate falls below (and stays below) 2 degrees C/km. The trop changes by day and night and by latitude. It varies from around 36,000' in the polar regions to upwards of 58,000 at the equator. See graph