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FIGURE 14.55 Reconstructed total solar irradiance from 1610 to 1995 using an 11-year solar cycle plus a longer term component of variability (adapted from Lean et al., 1995a).

FIGURE 14.54 Annual average number of sunspots from 1880 to 2000, showing the 11-year cycle (adapted from Cliver et al., 1998).

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