The Loon arrived on April 9, to find that there were only a few openings in the ice. He seemed anxious to get back home after his winter vacation. Even though the lake was ice-covered fewer than normal days, he still beat the thaw!
But he was right. On April 12. 2009 the lake was ice-free. It had been frozen for 126 days, slightly less than the average of 131.
See the graph below for more information, or visit my website for the lists of dates and other information.
[ http://dougdelamatter.com/website/science/environment/greenlake/greenlake.html ]
In this small land-locked lake, we can see a modest pattern of freeze & thaw that is consistent with Global Warming. In the past 25 years, the distance between the two trend lines is growing, showing that our summers are longer, but it is certainly not a consistent effect. That said, the three shortest winters have been since 1995.
(Click and pull the graph left to see the last years)
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