Figure 4

Mean global land surface and continental averages (1981–2012) of various statistics for P, ET, E_t, E_s and E_i.

(a) Mean annual values (mm year⁻¹). (b) Variance or covariance of annual values (mm² year⁻²). (c) Trend (mm year⁻²). Error bars are s.d. obtained from PML simulations 1 and 2. The symbol ** indicates significance level 1–α = 99% (p < 0.01); the symbol * indicates significance level 1–α = 95% (p < 0.05); the symbol ‘n’ is not significant (p > 0.05). In each figure sub-part for each geographic area the numbers presented are ordered equivalently to the sub-part legend. Note that scaling is applied to the Var (P) on part (b).