Climate Change 2001:
Working Group I: The Scientific Basis
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Figure 2.4: Tests of bias adjustments to sea surface temperature (SST) using a climate model (Folland et al., 2001). Black line - annual mean observed land surface air temperature (SAT) anomaly (°C) from a 1946 to 1965 average (Jones, 1994), a period before major anthropogenic warming. Red line - annual averages of four simulations of SAT anomalies using uncorrected SST data, 1872 to 1941, and an average of six simulations for 1941 to 1998. Blue line - average of six simulations of SAT, forced with SST data corrected up to 1941.

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