Freezing temperatures

As the outside air temperatures plummet (-16 C in Oxfordshire yesterday), the old pond has slowly been cooling over the last few days.

The continuous monitoring probe went back in on Sunday – here are the results so far.

Its still a safe 1.2 C under the ice and snow – and the pond here is only 15-20 cm deep.

[Click the image to see a higher resolution version of the graph]

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