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Table 1
Variable definitions and units.
| Symbol | Description | Unit |
|---|---|---|
| z | Vertical coordinate | cm |
| n⟨H⟩ | Hydrogen nuclei density | cm−3 |
| ρ = μH n⟨H⟩ | Gas mass density | g cm−3 |
| T | Gas temperature | K |
| a | Cloud particle radius | cm |
 |
Volume of a cloud particle | cm3 |
| Vs | Volume occupied by material s | cm3 |
| Vℓ | Minimum volume of a cloud particle | cm3 |
| f(V) | Size distribution function | cm−6 |
| ρLj | Cloud particle moments | cmj−3 |
| Lj | jth moment | cmj g−1 |
| J⋆ | Nucleation rate | cm−3 s−1 |
| χ | Net growth speed | cm/s |
| ρd | Mean cloud particle material density | g cm−3 |
| ϕ | Diffusive flux | cm−2 s−1 |
| Dd | Cloud particle diffusion coefficient | cm2 s−1 |
| Dgas | Gas diffusion coefficient | cm2 s−1 |
| s | Index for different solid materials | 1... S |
| r | Index for the surface reactions | 1... R |
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