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TROUBLE IN THE SWEET SEAS:THE SAGA OF GREAT LAKES POLLUTION       Chicago,   Jan. 23, 2013        James P. (Jim) Bruce, O....
Lake Erie                                                                          Lake Huron                             ...
Tens of thousands of dead fish rotting on Lake Erie shore                                Toronto Star   4 September 2012
August 2010          ⁰C above          Temps near                        normal            Surface ⁰CSuperior             ...
James Bruce, O.C., FRSC
James Bruce, O.C., FRSC
James Bruce, O.C., FRSC
James Bruce, O.C., FRSC
James Bruce, O.C., FRSC
James Bruce, O.C., FRSC
James Bruce, O.C., FRSC
James Bruce, O.C., FRSC
James Bruce, O.C., FRSC
James Bruce, O.C., FRSC
James Bruce, O.C., FRSC
James Bruce, O.C., FRSC
James Bruce, O.C., FRSC
James Bruce, O.C., FRSC
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James Bruce, O.C., FRSC

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James Bruce, O.C., FRSC

  1. 1. TROUBLE IN THE SWEET SEAS:THE SAGA OF GREAT LAKES POLLUTION Chicago,   Jan. 23, 2013 James P. (Jim) Bruce, O.C., FRSC
  2. 2. Lake Erie Lake Huron Lake Superior Seasonal Average Ice Cover (%)Seasonal Average Ice Cover (%) Seasonal Average Ice Cover (%) 60 60 60 50 50 50 40 40 40 30 30 30 20 20 20 10 10 10 0 0 0 1970 1980 1990 2000 2010 1970 1980 1990 2000 2010 1970 1980 1990 2000 2010 Winters 1973 -2008 Winters 1973 -2008 Winters 1973 -2008 Lake St. Clair Lake Michigan Linear TrendsSeasonal Average Ice Cover (%) Seasonal Average Ice Cover (%) Seasonal Average Ice Cover (%) 60 60 5-year moving average 50 50 50 St. Clair 40 40 40 Erie 30 30 30 Huron 20 20 20 10 10 10 Michigan 0 0 0 Superior 1970 1980 1990 2000 2010 1970 1980 1990 2000 2010 1970 1980 1990 2000 2010 Winters 1973 -2008 Winters 1973 -2008 Winters 1973 -2008
  3. 3. Tens of thousands of dead fish rotting on Lake Erie shore Toronto Star   4 September 2012
  4. 4. August 2010 ⁰C above  Temps near  normal Surface ⁰CSuperior 8 21Michigan 4Erie 27Ontario 24 (Austin, 2010, U. of Minn. Duluth)

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