Figure 2.11: Time-series
for 1948 to 1998 of ocean heat content anomalies in the upper 300 m for the two
hemispheres and the global ocean. Note that 1.5 x 1022 J equals 1 watt-year-m-2
averaged over the entire surface of the earth. Vertical lines through each yearly
estimate are ± one standard error (Levitus et al., 2000b).
