isn't antarctica cooling? 'no'

From the Copenhagen Diagnosis:

"Isn’t Antarctica cooling and Antarctic sea ice increasing?

Antarctica is not cooling: it has warmed overall over at least the past 50 years. Although the weather station at the South Pole shows cooling over this period, this single weather station is not representative. For example, there is a warming trend at Vostok, the only other long-term monitoring station in the interior of the continent. Several independent analyses (Chapman and Walsh 2008; Monaghan et al. 2008; Goosse et al. 2009; Steig et al. 2009) show that on average, Antarctica has warmed by about 0.5°C since wide-scale measurements began in the 1957 International Geophysical Year, with particularly rapid warming around the Antarctic Peninsula region and over the West Antarctic Ice Sheet (Figure 14 shows the mean trend from 1957-2006). Furthermore, there is direct evidence from borehole measurements that warming in West Antarctica began no later than the 1930s (Barrett et al. 2009).

Since the development of the Antarctic ozone hole in the late 1970s, there has been a strengthening of the circumpolar winds around Antarctica, which tends to reduce the amount of warmer air reaching the interior of the continent. The stronger winds are due to cooling in the upper atmosphere, which are in turn a result of ozone depletion caused by chlorofluorocarbons. As a consequence, much of East Antarctica has cooled in the summer and autumn seasons since the late 1970s. Ironically, human emissions of CFCs are thus helping to partly offset interior Antarctic warming, analogous to the global dimming due to sulphate aerosols. As the ozone hole gradually repairs over the coming century, the cooling offset is likely to diminish.

The factors that determine sea ice extent around Antarctica are very different from those in the Arctic, because Antarctica is a continent sited around the pole and surrounded by water, just the opposite of the Arctic geography. The extent of sea ice around Antarctica is strongly determined by the circumpolar winds which spread the ice out from the continent, and by the position of the polar front where the ice encounters warmer ocean waters. Sea ice cover in Antarctica shows a slight upward trend, consistent with the increase in circumpolar winds mentioned above. In West Antarctica, where the temperature increases are the greatest, sea ice has declined at a statistically significant rate since at least the 1970s."