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Zapping Contrails With Microwave Emitters
An anonymous reader writes "Dissipation of contrails with a powerful microwave beam aligned behind aircraft engines is being touted as a possible solution to help address air transport's effects on the climate. 'The remote heating of condensation nuclei could be achieved by applying electromagnetic radiation, such as microwaves,' says Cranfield University's Frank Noppel. 'Depending on assumptions made, calculation shows that the power required for such a device could be as little as 0.1% of the engine power.'"
No it isn't. Studies have shown that temperatures rose significantly across the US right after 9/11 when all planes where grounded for several days, because of clearer skies.
See here.