Fig. 2: Hydroxyl radical relative change.

a–d The percentage change of OH concentrations between four scenarios and the BASE run relative to the maxima at each height level averaged for daily distribution for the whole year 2016. The scenario abbreviations EXCX stands for E = emission, C = chemistry, X = temperature increase in the related module(s) and S stands for the scenario where only the first reaction of the reactions of terpenes with OH, NO3 and O3 were increased by 6 K. The percentage changes for the height interval 0 m–3 km are indicated as inline numbers.