The antarctic is fundamentally different from the Arctic (it is the Arctic that is the canary in the coalmine for global warming). It is surrounded by >30 degrees of latitude of water, and the Coriolis effect ensures that winds blow without the interference of land around the globe between the roaring forties and screaming sixties. This insulates the antarctic and is the main reason it is colder than the Arctic - there is little heat transfer from warmer latitudes. In contrast, the Arctic is all about heat transfer and global warming simulations show it will warm much faster than the antarctic.

Reference: http://www.livescience.com/40125-climate-change-affecting-ar...