Figure 5.

Contributions to variance from the sensitivity forcings/parametrizations applied (Table 1), for the same regions shown in Figure 3. For clarity only those which contribute at least 1% to the variance are shown. NO_x = NO_x emissions; CH₄ = CH₄ concentrations; CO = CO+NMVOC emissions; ELEV = the number of vertical model levels that NO_x, CO and NMVOC emissions are prescribed on. HNO₃ the rate of HNO₃ washout. Joint interactions, indicated by e.g. NO_x.CH₄ are also indicated where these contribute at least 1% to the variance.