Table 1
Main model characteristics.
| Gas phase | |||
|---|---|---|---|
| p-T profile | Moses et al. (2005), μ = 2.31 amu, [He]/[H2] = 0.1577. | ||
| CH4 abundance profile | Moses et al. (2005); Sánchez-López et al. (2022) | ||
| NH3 abundance profile | Blain et al. (2018) | ||
| PH3 abundance profile | Nixon et al. (2007); Cavalié et al. (2023) (a) | ||
| collision-induced | H2−H2 | Tgas ≤ 200 K | Abel et al. (2011) |
| absorption | Tgas > 200 K | Orton et al. (2007) | |
| H2−He | Abel et al. (2012) | ||
| Ices | |||||
|---|---|---|---|---|---|
| vertical distributions (b) | Cross sections (c) | ||||
| plow | pup | λ | κabs | κsca | |
| ––––––––[bar]–––––––– | [μm] | − [cm2g−1] − | |||
| water ice | 0.760 | 6.008 | 112 | 92.0 | 0.015 |
| 159 | 32.9 | 0.003 | |||
| ammonia ice | 0.265 | 0.585 | 112 | 19.2 | 0.010 |
| 159 | 12.0 | 0.004 | |||
Notes. (a)Tropospheric deep volume-mixing ratio 6 × 10−7, knee pressure 500 mbar, and fractional scale height 0.2 (from Cavalié et al. 2023, for details see text). (b)Zuchowski et al. (2009), normal scenario (two times solar deep-water abundance). Pressure levels indicate lower and higher boundary for ices. (c)Warren (1984) for water ice, Martonchik et al. (1984) for ammonia ice. Mean effective radius for both is ⟨aeff⟩ = 0.5 μm. In the best-fit model, ice cross-sections are scaled with a factor 2 (for details, see section 5.2).
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