The so-called warming pause or hiatus since 1998 has generated quite a bit of heat recently.
The Intergovernmental Panel on Climate Change has addressed it, as has two of the most-prominent names in the climate-change community, NASA’s Jim Hansen and Penn State’s Michael Mann.
Since 1998, the year that a record El Nino cooked the atmosphere over the tropical Pacific, data show that the rate of global warming has lost some steam. Dare we call it global lukewarming?
If it is not properly a “pause” or a “hiatus” – it is at least a slowing. Hansen and Mann attribute it to a combination of natural variability and changes in “external” forcing and insist it won’t last.