The photic zone is above 200m. The aphotic zone is below 200m, where photic references the presence of light. What the article showed that was disturbing was different temperatures in these layers, suggesting the lower ocean has been absorbing an unusual amount of heat these last couple decades. By eye, it looks like convection, that mixes the layers, is associated with storms (El nino/la nina).
Now I suppose if you express the energy as percentages, it would be like a 0.000000000001 percent change.
Economics article says we will always have coal, oil, gas because some remaining fraction wont be worth extracting. Point taken but thinking about it there are renewable sources of fuel so we will probably burn some kind of fuel forever. This means that someday we may discover what change in the amount of CO2 is the real amount needed to cause global warming.
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