Global warming/hockey stick

one version of the hockey stick, from the IPCC 3rd Assessment Report in 2001

a 2013 version of the hockey stick, with data going back further

another 2013 version, this time showing CO₂ levels going back ~420ky

About

The "hockey stick" is a well-known shape often found in charts showing global temperatures, where the time-span shown is at least a century or two and ends in the present.

Pages

• /deception: global warming skeptics often claim that the hockey stick is a deception of some sort and does not represent a real phenomenon

Links

Reference

• Wikipedia

More Images

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  global temperatures and atmospheric CO₂ for the past 2000 years

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  Annual-mean global-mean anomalies, 1880-2007