Why such short term graphs? One of them only goes back 1991, and the longest term only goes back to 1946.

rsynnott 7 hours ago | parent | next [-]

I’d assume lack of quality high resolution data. Weather stations all over the place, with records preserved indefinitely, is a relatively recent phenomenon.

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realo 8 hours ago | parent | prev [-]

Yes... why!!

Let's go back... ah, I see mile-high glaciers over London.

Global warming did occur in the past as well.

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graemep 8 hours ago | parent [-]

How is that a reason to exclude it from the graph? Surely including it in the charts would strengthen the case for regarding it as a long term problem?

Excluding it subtly suggests that global warming is a short term phenomenon.

	▲	tasuki 7 hours ago \| parent \| next [-]
		I agree with you that it's a long term problem. I won't stop until London is under a mile-high glacier!
	▲	hdgvhicv 5 hours ago \| parent \| prev [-]
		There you go https://xkcd.com/1732/ 20,000 years enough?