Bullshit. If I have a glass half full of boiling water, and a glass half full of ice water, the two glasses have an average temperature of around 50 degrees C. If I pour one into the other, the hot water will cool, and the ice water will warm; but the average temperature is still 50 degrees.
The heat was redistributed, but the average temperature hasn't changed.
This is exactly what ocean currents do; redistribute heat on the earth. A high El Nino/La Nina year like 1997, while it may warm the Arctic, cools the tropics at the same time, keeping the average temperature the same. Despite the "climate change chicken dancer's" claims, a high El Nino/La Nina year cannot affect the average temperature of the earth to any significant extent. Since, considering 1997, it appears to do so, then our method for measuring the average temperature of the earth is badly flawed. We obviously have more temperature measuring locations in spots that are warmed by El Nino than spots
And before you say these currents are carrying this heat to the bottom of the oceans, remember that study last year that analyzed ocean temperature data from 2005 to 2013, and found the oceans didn't measurably warm during that period. That was the entire time period they analyzed data for.
Despite the climate change proponents claims, the peak global average temperature of 1997 was not, and could not, be caused by ocean currents. And, despite the majority of the northern hemisphere having the coldest year in decades in 2014, in some cases breaking winter cold temperature records that were a century old or more, and a summer that saw people with quilts and comforters on beds, rather than the single sheet or nothing at all that summer sleeping usually requires, the global warming proponents are still saying that 2014 was the warmest year on record. Really? Was the south pole on fire? Because unless it was, the southern hemisphere certainly wasn't warm enough to counteract the 6-10 degrees C cooler than average that the northern hemisphere saw. Sure, Australia had a heat wave at the beginning of 2014, with temperatures a measly 4 degrees higher than normal for a few weeks. Hardly enough to counteract the 9 months of significantly colder than average temperatures that the north saw.