July 13, 2013
James M. Taylor, J.D.
James M. Taylor is managing editor of Environment & Climate News, a national monthly...(read full bio)
United Nations Intergovernmental Panel on Climate Change lead author Hans von Storch told Der Spiegel that climate models are having a difficult time replicating the lack of global warming during the past 15 years.
“So far, no one has been able to provide a compelling answer to why climate change seems to be taking a break," said Storch.
Storch said the models say the planet should be warming much more than it has.
"According to most climate models, we should have seen temperatures rise by around 0.25 degrees Celsius (0.45 degrees Fahrenheit) over the past 10 years. That hasn't happened. In fact, the increase over the last 15 years was just 0.06 degrees Celsius (0.11 degrees Fahrenheit)-- a value very close to zero," Storch told Der Spiegel. "This is a serious scientific problem that the Intergovernmental Panel on Climate Change (IPCC) will have to confront when it presents its next Assessment Report late next year.