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Changes in the Average Date of Spring Runoff Pulse Onset
United States Global Change Research Program
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The correlation between percentage of ice cover over Lake Superior (spatially and temporally averaged over the entire lake during the period from December to the end of May) and the date when the stratified season starts.
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Austin, JA and Colman, SM. “Lake Superior summer water temperatures are increasing more rapidly than
regional air temperatures: A positive ice-albedo feedback.” Geophysical Research Letters 34 (2007): L06604. Image data provided by NOAA. |
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The lake's ice cover decline over the last three decades. Images courtesy of Dr. Jay Austin, University of Minnesota.
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Austin, JA and Colman, SM.
“A century of temperature variability in Lake Superior.” Limnology and Oceanography 53 (2008): 2724-2730. Image data provided by NOAA. |