This Landsat 7 thermal image shows the thermal bar along the shore of Lake Ontario
Apr 21, 2005Monitoring lake inventories and health

Contributor: John Schott, Rochester Institute of Technology As snow begins to melt at the close of winter, large lakes receive warm spring river run-off carrying pollutants that are potentially harmful to phytoplankton and the fish that feed on them. The warmer water initially stays near the shoreline, not mixing with the cold winter lake water. […]