Climate models can be good tools for predicting future sea ice levels — unless, of course, they are completely wrong.

In the case of Antarctica, the climate models were dead wrong, according to a new study by Chinese scientists published in the journal Cryosphere. The study found that most climate models predicted Antarctic sea ice coverage would shrink as the world warmed and greenhouse gas levels increased.

The opposite happened. Most climate models analyzed in the study predicted Antarctica would shrink between 1979 and 2005, but instead south pole sea ice levels increased during that time. Going a step further, sea ice levels have only increased since 2006, hitting all-time highs for sea ice coverage in September of last year.