1700 years of Temperature from Proxy Data

Figure 33.12

Texas Tech University
Katharine Hayhoe

This figure appears in chapter 33 of the Climate Change Impacts in the United States: The Third National Climate Assessment report.

http://nca2014.globalchange.gov/report/appendices/climate-science-supplement/graphics/1700-years-temperature-change-proxy-data

Changes in the temperature of the Northern Hemisphere from surface observations (in red) and from proxies (in black; uncertainty range represented by shading) relative to 1961-1990 average temperature. These analyses suggest that current temperatures are higher than seen globally in at least the last 1700 years, and that the last decade (2001 to 2010) was the warmest decade on record. (Figure source: adapted from Mann et al. 2008ade3fd09-603e-4fae-b252-1a4142392ea0).

When citing this figure, please reference adapted from Mann et al. 2008ade3fd09-603e-4fae-b252-1a4142392ea0.

Copyright protected. Obtain permission from the original figure source.

This figure was created on October 23, 2013.

References :

• Proxy-based reconstructions of hemispheric and global surface temperature variations over the past two millennia (ade3fd09)

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