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Fig. 5

image

Gaussian cloud particle size distribution material and optical effects (atmosphere of Teff = 1800 K, log (g) = 3.0). Top left: Gaussian distribution mean cloud particle size (solid black). Green contours show particle sizes 1 σ, 3 σ,  and 5 σ from the mean size (left axis). Top left: cloud particle number density nd [cm−3] (dashed blue line, right axis). Below this we reproduce material property plots to facilitate comparison. These are identical tothose shown in Fig. 1. Bottom left: nucleation rates (left axis) for individual species Ji [cm3 s−1] i = TiO2 [s] (blue), SiO[s] (brown), and the total J* = ΣiJi (red). Bottom left: ratio of the cloud particle mass density and gas mass density ρdρ scaled by a factor of 10−3 (black dashed line, right axis). Top right: single-scattering albedo (AS(λ)) for monodisperse cloud particles ⟨ a ⟩ [μm] (solid) and Gaussian size distribution (dotted) at wavelengths λ = 0.1, 0.25, 0.64, 1.63, 4.13, 10.48, 26.56, 67.34, 170.74, and 432.88 μm. Bottom right: ratio of the single-scattering albedo for a Gaussian and monodisperse size distribution (), i.e. a value of > 1 indicates an increase in the albedo when a particle size distribution is included. The wavelengths are the same as for top right plot.

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