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Thermometer Exposure


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  • Location: Lincoln, Lincolnshire
  • Weather Preferences: Sunshine, convective precipitation, snow, thunderstorms, "episodic" months.
  • Location: Lincoln, Lincolnshire

    My earlier weather records were mostly taken with a thermometer dangling out of the window (one of those Oregon Scientific ones that has a wire that dangles outside, and records the temperature; I'd have it halfway down the windowside).

    These days I have an AWS, with a thermometer inside a double-louvred Stevenson screen (I got the second set of louvres in mid-November) and have been very pleased with the readings I've been getting, and have been comparing with the old thermometer I dangled out of the window, to help 'homogenise' my weather records table in Excel where I've been interpolating my earlier records. (I haven't modified the originals; this is a separate Excel file)

    So far, I've been getting very little difference with a temp above 5C, but a sliding scale down to around -1C, when the screened thermometer is reliably about 1C lower than the one out of the window.

    Does anyone have more knowledge than me as to what the main differences would be, re. having a thermometer placed by a windowside?

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  • Location: Aviemore
  • Location: Aviemore

    Not sure what you're exactly looking for on this one Ian, but from what you're saying it all makes sense - you would expect residual heat from your house to affect the temp more at lower temperatures than at higher ones.

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