Global warming appears to have shifted into a faster gear. After removing the effects of El Niño, volcanic eruptions, and solar cycles, researchers found that the planet has warmed at roughly 0.35°C per decade over the past ten years, compared with just under 0.2°C per decade from 1970 to 2015. The acceleration, which becomes visible around 2013 to 2015, appeared across five major global temperature datasets with more than 98% statistical certainty.
They have been using the minimum estimate for CO2 impact on heating since the 1970s. The level of pollution in the air has been hiding the true impact and as the various causes of pollution are removed the earth energy balance is changing such that it turns out that the highest end of the CO2 impact is actually correct, which doubles the heating effect. There has been about a third of climate scientists who have been warning about this but they have consistently been called the extremists or the doomers and they have been right all along. They were always right, the evidence was based on actual experiments of the impact of CO2 and not by measuring the planet.