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Annual Average Global Surface Temperature Anomalies 1880-2006

This diagram shows global mean surface temperature anomalies over land and ocean from 1880 to 2006. The anomalies are in comparison to the 1901-2000 mean. From the late 1800s to the late 1930s, temperatures were below the long-term mean. Between the late 1930s and late 1970s temperatures ranged above and below the long-term mean. Since 1980 temperatures have been well above the long-term mean.

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