Researchers - Continued Climate Breakdown Promises Substantial Changes In UV Exposure By 2100 - AFP

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Climate change will disrupt Earth's precious ozone layer, boosting ultraviolet (UV) radiation in the deep southern hemisphere and reducing UV in far northern latitudes, a study warned on Sunday.

By century's end, UV levels in Antarctica could rise by up to 20 percent at seasonal peaks while average exposure in northern Scandinavia, Siberia and northern Canada could fall by almost a tenth.

The shift could have worrying impacts on human health, as high exposure to UV is linked to cancer, cataracts and crop damage just as low exposure causes vitamin D insufficiency. "Our study is showing that there is a new threat to the ozone layer, and this is climate change, which will either increase or decrease UV depending on the region," said atmospheric physicist Michaela Hegglin of Canada's University of Toronto.

EDIT

Above 60 degrees latitude north, a line roughly giving the location of Stockholm, Helsinki, Saint Petersburg and Anchorage, Alaska, clear-sky levels of UV will fall by 9.1 percent by 2095 compared with 1965 levels. In the northern mid-latitudes, there will be a fall of 3.6 percent. In the tropics, UV exposure will rise by 3.8 percent. The southern mid-latitudes will be unchanged. Below 60 degrees latitude south -- essentially Antarctica -- there will be a UV increase of an average 3.2 percent, although this figure masks huge swings.

EDIT

http://www.terradaily.com/reports/Ozone_Climate_change_boosts_ultraviolet_risk_for_high_latitudes_999.html