The [IPCC] reports have documented a steadily increasing certainty among climate scientists that global warming is a human-made problem. Yet some public scepticism has persisted, especially in the United States."
Although climate models have been predicting increasing average global temperatures over the next century or so, the past decade has not shown as much warming as most scientists had expected. The year 2012 was no warmer than 2002. The IPCC draft report acknowledges a "global warming hiatus,"
according to media reports.
Global warming skeptics have seized on the news of a potential pause. The skeptical blog Jammie Wearing Fools wrote, "Fifteen years, no warming, yet we've endured nonstop hysteria in that time, with skeptics derisively called deniers, among other pejoratives. We'll be waiting even longer for the apologies."
He's certainly right about the last point. Gavin Schmidt, a climate scientist with NASA's Goddard Institute for Space Studies,
told National Geographic that focus on a global warming pause over the past 15 years is a "misplaced" distraction that misses the big picture. He said, "The IPCC and the issue of climate change is not about the weather next year or the next five years; it's about the long-term climate change that we are engendering."
Schmidt, who has not directly contributed to the IPCC report, added, "We know we're changing the climate. We're very confident in that, and not just temperature, but also pressure, rainfall, ice changes, shrinking of glaciers, and many other factors.