Warmist Kevin Trenberth, struggling mightily to explain the lack of global warming: Hey, did we mention that a "prominent source of natural variability in the Earth’s energy imbalance is changes in the sun itself"?

Has Global Warming Stalled? | Royal Meteorological Society

[Trenberth] "Warming" really means heating, and so it can be manifested in many ways. Rising surface temperatures are just one manifestation. Melting Arctic sea ice is another. So is melting of glaciers and other land ice that contribute to rising sea levels. Increasing the water cycle and invigorating storms is yet another...Another prominent source of natural variability in the Earth’s energy imbalance is changes in the sun itself, seen most clearly as the sunspot cycle. From 2005 to 2010 the sun went into a quiet phase and the warming energy imbalance is estimated to have dropped by about 10 to 15%.
...Human induced global warming really kicked in during the 1970s, and warming has been pretty steady since then...Focusing on the wiggles and ignoring the bigger picture of unabated warming is foolhardy, but one promoted by climate change deniers. Global sea level keeps marching up at a rate of over 30 cm per century since 1992 (when global measurements via altimetry on satellites were made possible), and that is perhaps a better indicator that global warming continues unabated.

Kevin Trenberth’s REAL travesty | Climate Sanity

[Trenberth 2009] The fact is that we can’t account for the lack of warming at the moment and it is a travesty that we can’t.