Image:GlobwarmNH.png

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GlobwarmNH.png‎ (300 × 230 pixel, file size: 24 KB, MIME type: image/png)

This is meant to be a better version of

This graph is published above the GFDL:


GFDL

Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts.
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Empirical data are from [source ] Climate Change 2001: Working Group I: The Scientific Basis (International Panel on Climate Change)

The data are for the Northern Hemisphere.

50 year averaged data are shown for 1000-1950, in blue, with upper limit to 95% confidence limit estimated from the IPCC annual data as 0.5/sqrt(50.0) up to 1600, and 0.3/sqrt(50.0) after 1600

10 year averaged data for 1950-2000 are shown, in red, with upper limit to 95% confidence limit estimated from the IPCC annual data as 0.15/sqrt(10.0)

Boud 22:24, 9 Jan 2004 (UTC)

The error bars on here appear to be significantly misleading. The original IPCC graph at the source page [1], contains a much larger 95% confidence limit (the grey region) than the graph prepared here. The shrinking of those error bars makes the historical data appear artificially more accurate than it is actually believed to be. — Cortonin | Talk 04:50, 11 Feb 2005 (UTC)

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