A new paper in Nature communications explains why some climate processes are more effective than others at warming/cooling the Earth. By accounting for these differences we can more accurately determine the most important drivers of climate change in sensitive regions like the Arctic.

Observations from the last fifty years have shown that the nights have been warming much faster than the days. Analysis of the causes of this more rapid warming at night shows that this is likely to continue in the coming decades.

Scenarios with freshwater leading to sluggish currents and less heat being transported to northern high latitudes have been seen as a potential cause for rapid climate changes. In two recent studies we show that while this scenario is plausible in the North Atlantic, the ocean response in the Arctic is quite the opposite.

Recent summer temperatures in Europe are likely the warmest of the last two millennia, a new study shows. 

Will carbon uptake increase or decrease due to global warming? A new model experiment shows that uncertainties in modelled biological production makes the answer unclear.