Great Lakes ice cover shrinks, with big toll

Categories: News
Published on: January 27, 2021

Toronto Star / Max Martin / 26 January 2021

Ice coverage on the Great Lakes hit record lows in January and is well below the seasonal average, prompting concerns from experts about the environmental impact caused by a lack of ice.

As of Jan. 25, 7.7 per cent of the Great Lakes have frozen over, based on data from the National Oceanic and Atmospheric Administration, a U.S. science agency.

Ice levels were as low as 1.8 per cent on Jan. 15, a record-low for the mid-January period.

The abnormally low levels in 2021 reflect a longstanding trend of Great Lakes ice coverage declining by about 5 per cent per decade since the 1970s.

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