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Wilfrid Laurier University Leaf
July 6, 2015

Canadian Excellence

Photo Gallery

Simon Kiss

Global Warming Plateau

Dec 4/12

This is a graph generated by data at site provides a trend calculator. The data in this graph are from the Climate Resarch Unit's HADCRUT4 dataset. It's included in the context of a debate about the existence of a "plateau" in global warming and by a post made by Phil Plait at Slate Magazine. While the central values for land and sea temperature measurements are increasing, once you include uncertainty measurements, the warming trend disappears.

To put this in context, I put an equivalent graph from 1900 to 2012. You can see the plateau at the end of the graph; it's true that it pales in comparison to the length of the plateau in temperatures mid-century, but it's there.


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