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John Wheeler, WDAY, Published September 26 2013

Weather: Southern sea ice increases while Arctic ice diminishes

The reduction in Arctic sea ice over the past 30 years is well documented. What is not generally knows is that Antarctic sea ice has been increasing over this same time.

To be sure, the increase in southern sea ice is not nearly as great as the decrease in northern sea ice, but the southern increase is real nonetheless.

Several studies published in recent months have concluded that the increased atmospheric and oceanic circulation around Antarctica has actually made the southernmost continent colder even as globally average temperatures have warmed. In addition, southern ocean currents are causing areas of ice to converge, which is opening up more water to freeze in the cold temperatures.

The so-called ozone hole over Antarctica may also be partly responsible for some of the temperature decrease.


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