Ocean circulation is key to climate change predictions

In a new study from the University of Copenhagen, researchers have found that atmospheric changes are not the biggest contributor to the uncertainty that arises in global climate change projections. The experts report that such uncertainties are primarily associated with changes to ocean circulation in the North Atlantic. There are 30 state-of-the-art IPCC climate models that predict dramatically different climates for the Northern Hemisphere, especially Europe. Variables such as atmospheric pressure, cloud cover, and ocean surface temperatures interact differently in each model.  An international team of researchers …