One of these studies, in which Meehl et al. showed that models could not reproduce recent warming without including anthropogenic influences, was featured in a 2004 review of climate science by the George W. Bush administration.
[9] His research has also shown that record high temperatures in the continental United States were more than twice as common as record lows in the 2000s,[10][11] that it may soon be possible to predict heat waves three weeks in advance (rather than 10 days, which is the best current forecasts can do),[7][12] and that the global warming hiatus observed over the last 15 years or so may be caused by more heat accumulating in the deep ocean.
[13][14][15] When Meehl joined Matthew England to publish one such study in Nature Climate Change in 2014,[16] Meehl said that this study "...makes the case that, though other factors could contribute somewhat to the early-2000s hiatus, the Pacific is a major driving force in producing naturally-occurring climate variability that can overwhelm the warming from ever-increasing greenhouse gases to produce the hiatus."
[17] In September 2014, Meehl et al. published another study on this topic, in which they attempted to simulate the hiatus with currently available climate models.
They found that these models were able to simulate the hiatus, and concluded that it was largely caused by natural variability.