Why is the IPCC so wrong regarding their methane projections?

One of the indisputable facts in the field of global climate change is that the atmospheric build-up of methane (CH4) has been, over the past few decades, occurring much more slowly than all predictions as to its behaviour (see Figure 1 in the report). Since methane is a particularly potent greenhouse gas (thought... show more One of the indisputable facts in the field of global climate change is that the atmospheric build-up of methane (CH4) has been, over the past few decades, occurring much more slowly than all predictions as to its behaviour (see Figure 1 in the report). Since methane is a particularly potent greenhouse gas (thought to have about 25 times the warming power of CO2), emissions scenarios which fail to track methane will struggle to well-replicate the total climate forcing, likely erring on the high side—and feeding too much forcing into climate models leads to too much global warming coming out of them....

Full report here
http://www.worldclimatereport.com/index....
Update: Anybody can see that some of you as usual missed the point of the study. The data clearly shows that the IPPC projected methane concentration range is as usual out by a massive amount. "This behaviour is quite perplexing. And while we are not sure what processes are behind it, we do know one thing for... show more Anybody can see that some of you as usual missed the point of the study. The data clearly shows that the IPPC projected methane concentration range is as usual out by a massive amount.

"This behaviour is quite perplexing. And while we are not sure what processes are behind it, we do know one thing for certain—the slow growth of methane concentrations is an extremely cold bucket of water dumped on the overheated claims that global warming is leading to a thawing of the Arctic permafrost and the release of untold mega-quantities of methane (which, of course, will lead to more warming, more thawing, more methane, etc., and, of course, to runaway catastrophe).

To some, the blip upwards in methane growth in 2007 (Figure 2) was a sure sign that the methane beast was awakening from its unexpected slumber. Climate disaster was just around the corner (just ask Joe Romm)...."
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