Water-Vapor Climate Feedback Study Suggests End of Life As We Know It. By Joseph Romm, ClimateProgress, October 26, 2008. "A new study in Geophysical Research Letters (subs. req'd), Water-vapor climate feedback inferred from climate fluctuations, 2003-2008 analyzed recent variations in surface temperature and 'the response of tropospheric water vapor to these variations.' They concluded that the 'water-vapor feedback implied by these observations is strongly positive' and 'similar to that simulated by climate models.' The analysis concludes: 'The existence of a strong and positive water-vapor feedback means that projected business-as-usual greenhouse-gas emissions over the next century are virtually guaranteed to produce warming of several degrees Celsius. The only way that will not happen is if a strong, negative, and currently unknown feedback is discovered somewhere in our climate system.' A 'warming of several degrees Celsius' = the end of life as we know it (see Is 450 ppm politically possible? Part 0: The alternative is humanity's self-destruction)."
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