Figure 3
Effect of ageing on CCN activation potential. Measurement of the critical supersaturation for monodisperse particles of Ddry = 50 nm. Results for NaCl are illustrated in (a) and for sea salt in (b). The blue lines show CCN activation at the initial state of the experiments (fresh NaCl and SSA), while the red lines illustrate CCN activation after 3 hours of ageing in the presence of \(\hbox {O}_3\) and UV lights (aged NaCl and SSA).
