Fig. 1. Measured [A₂] versus [A₁] for the four bases at various concentrations^[59]. (a) NH₃; (b) MA; (c) DMA; (d) TMA

Fig. 2. Comparison of ambient and CLOUD particle formation rates against sulfuric acid monomer concentration^[34,66,71]

Fig. 3. Molecules and clusters measured during atmospheric acid-base new particle formation events from sulfuric acid and amines^[100]

Fig. 4. Gibbs free energy barrier of H₂SO₄ clusters with various base molecules^[100]