The U.K. Met Office recently released data showing that there has been no statistically significant global warming for almost 16 years. During this period, according to the U.S. National Oceanic and Atmospheric Administration (NOAA), carbon dioxide (CO2) concentrations rose by nearly 9% to now constitute 0.039% of the atmosphere. Global warming that has not occurred cannot have caused the extreme weather of the past few years. Whether, when and how atmospheric warming will resume is unknown. The science is unclear. Some scientists point out that near-term natural cooling, linked to variations in solar output, is also a distinct possibility.There are 134 signatories to this letter, most of whom appear to have doctorates.
There is no consensus. And the lack of warming over the last decade should have made changers at least question their theory. In as much as it has not had this effect, tossing around the label "denier" is misdirected.