A very benign environment

Pond and air temperatures this week

Pond and air temperatures this week

This graph tells an interesting story.

In the pond, its been an almost constant 3-4 C over the last week or so, despite the cold weather.

Outside in the open air its been freezing every night, altogether a much harsher world.

It hadn’t really dawned on me quite how surprisingly benign a place the pond was until somebody I was showing the graph to today pointed it out to me.

Its been generally much warmer than the surroundings, as well as more constant, despite the days of cold weather.

The vertical lines are set at midnight – usually, but not always, a little before the coldest part of the night.

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One Response to “A very benign environment”

  1. Cold weather looks set to continue « The Garden Pond Blog Says:

    […] Measurements last year showed just how benign the environment was in the pond, despite nightime temperatures dropping well below freezing. Possibly related posts: (automatically generated) […]

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