Read here. Based on satellite observations, the sea ice extant has been increasing at a rate close to 1% per year. Researchers speculate that ozone has caused increase but a climate model suggests growth is within natural climate variability. The CO2-AGW theory predicts that Antarctica should be warming and the sea ice pack should be shrinking.
"The only thing we can conclude at this point in time, therefore, is that for some still-unproven reason, and in spite of the supposedly unprecedented increases in mean global air temperature and CO2 concentration that the planet has experienced since the late 1970s, Antarctica sea ice extent has stubbornly continued to just keep on growing."
