Unexpected warming in Antarctica

By Jonathan Fildes
BBC News science reporter

Winter air temperatures over Antarctica have risen by more than 2C in the last 30 years, a new study shows.

Research published in the US journal Science says the warming is seen across the whole of the continent and much of the Southern Ocean.

The study questions the reliability of current climate models that fail to simulate the temperature rise.

In addition, the scientists from the British Antarctic Survey (BAS) say the cause of the warming is not clear.