It’s been a busy year for climate scientists, who have been trying to explain why there has been no global warming for nearly two decades.
The Daily Caller News Foundation reported in February there were eight mainstream explanations for the pause, but there are now a whopping 52 explanations for why there has been no warming trend for the last 215 months.
Explanations for the pause in global warming range from ocean oscillation cycles to Chinese coal plant emissions, volcanic activity to some scientists even saying there is no hiatus in warming.
One recent study found that the warming hiatus is due to “heat transported to deeper layers in the Atlantic and the southern oceans, initiated by a recurrent salinity anomaly in the subpolar North Atlantic.”
This oceanic cooling cycle “associated with the latter deeper heat-sequestration mechanism historically lasted 20 to 35 years,” according to Professor Ka-Kit Tung from the University of Washington.
So what’s the latest explanation for why the Earth stopped warming? Europe’s Joint Research Center (JRC) says the hiatus in warming since 2001 is due to “a combination of a natural cooling phase, known as multidecadal variability (MDV), and a downturn of the secular warming trend.”
European Union scientists don’t know the exact what caused the “downturn of the secular warming trend,” but say “ the Earth hasn’t warmed at the same pace during the 20th century.” JRC researchers analyzed surface temperature records going back to 1850 to “separate natural variations from secular” ones.