Climate Letter #276

November 13, 2014

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Climate science:  About melting Antarctic ice from below.  “The penetration of warm water to Antarctic ice shelves appears to be responsible for their dramatic decline.”  This new study explains how it happens, and how the process was discovered.  This will again affect sea level forecasts—upward.
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Live longer? Save the planet? Better diet could nail both.  A very worthwhile read, said to be based on a synthesis of validated scientific analyses.  The benefits may look too good to be true, but I think they are not far off.  So—how will we ever find out?
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More complete numbers on fossil fuel subsidies.  The recently reported figure of $88bn (CL#274) only covered exploration subsidies.  The all-in global total is $548bn according to the IEA.  That compares with $121bn for renewables.  (The cost of damage to health and the environment, an indirect subsidy borne by society as a whole, is not included in these numbers.)  There is much more analysis in the report, showing how counter-productive these subsidies are.
If you have further interest in how fossil fuels are generously treated, take a look at this recent IMF working paper that deals with the “external costs” of CO2 emissions, expressed in terms of the projected costs and benefits of their elimination.  This is looked at narowly, in a way that excludes any benefits to global climate outcomes.
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How hurricanes affect ocean water temperatures.  They apparently have a truly substantial cooling effect.  This ought to raise further questions about just how the cooling is produced and where that heat from the surface is taken.  I suspect that intensified vaporization carries heat to the upper atmosphere, where the vapor is soon condensed into extraordinary amounts of rainwater, which will release heat, but where does the heat go from there?  Any idea?
Carl

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