Table 1 Overview of parcel model input parameters and output variables for bulk Köhler (BK) and compressed film (CF) models

 Aitken mode number concentration N₁ [cm⁻³]

226

1110

2000

 Acc. mode number concentration N₂ [cm⁻³]

134

540

30

 Aitken mode geometric mean radius R₁ [nm]

19.7

22.7

11.5

 Acc. mode geometric mean radius R₂ [nm]

69.5

82.2

100

 Geom. standard deviation of Aitken mode σ_g,1

1.71

1.75

1.71

 Geom. standard deviation of accumulation mode σ_g,2

1.70

1.62

1.70

 Organic fraction in Aitken mode F_org,1

0.2

0.67

0.52

 Organic fraction in accumulation mode F_org,2

0.2

0.67

0.30

 Updraft velocity w [m s⁻¹]

0.32

0.32

0.32

 Minimum surface film thickness δ_min [nm]

0.2

0.2

0.2

 Surface tension of organic γ_org [mN m⁻¹]

40

40

40

 Cloud droplet number conc. CDNC_BK [cm⁻³]

147

417

68

 Cloud droplet number conc. CDNC_CF [cm⁻³]

166

513

165

 CDNC enhancement Δ_CDNC [%]

13

23

145

 Maximum supersaturation \(s_{{\mathrm{max}}}^{{\mathrm{BK}}}\) [%]

0.272

0.183

0.407

 Maximum supersaturation \(s_{{\mathrm{max}}}^{{\mathrm{CF}}}\) [%]

0.250

0.138

0.319

 Smallest activated dry radius \(\left( {r_{1,{\mathrm{BK}},}^ \ast r_{2,{\mathrm{BK}}}^ \ast } \right)\) [nm]

37.3, 32.8

65.6,61.2

34.8, 29.9

 Smallest activated dry radius \(\left( {r_{1,{\mathrm{CF}},}^ \ast r_{2,{\mathrm{CF}}}^ \ast } \right)\) [nm]

31.7, 28.9

52.1, 52.1

25.5, 27.0

 Cloud optical thickness τ_BK

5.6

7.9

4.3

 Cloud optical thickness τ_CF

5.8

8.4

5.8

 Cloud-top albedo α_BK

0.294

0.372

0.243

 Cloud-top albedo α_CF

0.303

0.386

0.304