Wednesday, February 03, 2010

The sun is rising!

Up north the sun is beginning to make itself seen again.

To wit, here's the forecast for Pond Inlet, latitude 72'42"N:

Today: Clear. Temperature steady near minus 25.
Tonight: Clear. Low minus 30.
Thursday: Sunny. High minus 24.

I bolded the interesting parts: that today it will be clear, whereas tomorrow it will be sunny. The forecast production software decides, based on some algorithm, which word will be used. Today's sunset is slated for 10:44 and sunset 14:07, for a total of 3 hours and 23 minutes of daylight.

(Interestingly, the same sort of thing happens in the summer, where northerly regions get "sunny" as a forecast in the tonight period.)

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