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Comment Re:Straight to the pointless debate (Score 1) 136

Depends if you are navigating by magnetic north or true north.
If you were using magnetic bearings with your GPS then you will be just as lost as relying on the compass with GPS bearings.

If some dope seriously compromised the thermometer's accuracy, say buy putting it near a radiative surface, then accuracy is lost and you have to throw the data out.
You can't average out the error and just subtract it from all the numbers. The data is useless - you cannot repair inaccurate data.

But they aren't 'correcting' for a simple cases like what you gave anyway. They are correcting whole areas not individual thermometers.

Comment Re:Straight to the pointless debate (Score 1) 136

But the temperature isn't 2 degrees cooler, it is exactly what the thermometer measured.

Yes cities are heat islands. But a heat island isn't a magical thing that makes thermometers read higher than reality.
You can't 'correct' the accurate measurement. It was that temperature at that location.

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