“Environment Research Letters” has just published an intriguing assessment of the harm which high-flying aircraft inflict on the earth’s heat budget – and how a simple rerouting of long distance aircraft, laterally or vertically, could preclude this effect almost entirely. An essential read. For a simple assessment of this paper see our “Lay Version“.
http://iopscience.iop.org/1748-9326/9/6/064021/article