[Admin: tread split off and retitled from http://metabunk.org/showthread.php?p=25705#post25705 ]
I don't know you training or education but mine is not geophysical science; I have been researching contrails for over two years and find it confusing, obscure, and difficult to pin down precise explanations detailing the interactions and dynamics of contrail formation, persistence and cirrus cloud formation and propagation and the precise way it effects micro and macro climates . . . the early research regarding the simple Appleman Chart is no longer adequate with the new engine efficiencies and effects of increased air traffic . . . effects of global warming, etc.