«Combining the ground and satellite measurements provides the most comprehensive view of how lake temperatures are changing around the world,» he said. (sciencedaily.com)
If volcanoes or some other form of geothermal heat affected lake temperature, this would be seen in the depth - temperature thermal profiles. (wattsupwiththat.com)
Global warming is leading to later freeze - up of the Great Lakes and warmer lake temperatures. (climaterealityproject.org)