Figure 8.12: An uncertainty
ratio for 10-degree latitude bands; (a) control simulations; (b) difference between
the control and doubled greenhouse gas simulations. E is evaporation, P is precipitation,
Tscr is screen temperature, cld is the percentage cloud cover and Sn is the net
short-wave radiation at the surface. The units on the Y-axis are dimensionless.
An asterisk means the value is statistically significant at 95% and a diamond
at 90% (see Crossley et al., 2000).