Photos of contrail clouds formed over Three Forks, Montana, February 27, 2005.

Three Forks Contrails
Looking south-southeast. This shows the spread of contrails based on the time they've been in the sky. It is interesting, as in this photo, that contrails, as they expand from their original narrow line to broad swaths across the sky, seem to either hold the same density, or increase in density. What is in this exhaust that, when mixed with the atmosphere, expands so readily, refuses to dissipate, and exhibits such properties of increasing density?
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Three Forks Contrails
A different angle of the same sky seen in the previous photo. These contrails are remaining long, spreading, and creating an artificial, unnatural cloud cover in what otherwise would be a perfectly clear, blue-sky Montana day. Is this possibly someone's attempt to mitigate "global warming"? Or possibly to make it worse?
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Three Forks Contrails
(See comments at bottom)
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Three Forks Contrails
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Three Forks Contrails
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Three Forks Contrails
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Three Forks Contrails
The above five photos show different stages of contrail cloud formation, from the new, to the intermediate time, probably an hour or so, to the long term of up to six to eight hours. The higher, widespread contrail film-like clouds are quite common in these skies, and are sometimes much less evident than these, being seen only on close inspection, but when observed often covering the entire sky and unquestionably cutting down on the intensity of the sun's rays reaching the earth. What's really going on here?
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