Table 1
Description of the parameters retrieved by ARCiS using the different 3D setups in this study, as described in the text.
| Name | Description | Priors |
|---|---|---|
| Parameters included in all setups | ||
| Rp | Planet radius | 0.94–1.13 Rj |
| fday | Proportion of incoming stellar flux absorbed by the planet’s dayside atmosphere. fday = 1 – Ab(a) | 0 (no flux absorbed) to 1 (all flux absorbed) |
| fred | Heat redistribution factor. Integrated energy on the nightside divided by integrated energy on the dayside | 0 (no heat redistributed from day to night) to 1 (all heat redistributed from day to night) |
| log(fv) | Base-10 logarithm of the ratio of equatorial wind speed VΛ over horizontal diffusion parameter KΛΦ (b) | -1 for negligible winds to 8 for strong winds |
| nϕ | Exponent determining the latitudinal extent of equatorial winds, given by  Φ |
3 for far-reaching winds to 10 for a narrow band of wind |
| Tint | Temperature at an optical depth  as caused by internal heat from the planet |
10-3000K |
| log(γ) | Base-10 logarithm of the ratio between optical and IR opacities i.e.  |
–2 to 2 |
| log(κIR) | Base-10 logarithm of the mean IR opacity | κIR varies from 10−4 to 104 cm2 g−1 |
| log(gp) | Base-10 logarithm of the planet surface gravity(c) | 3.56–3.83 (with g given in cgs units) |
| Parameters only included in setups with clouds | ||
| log(Pcloud) | Cloud top pressure (function of phase) | Pcloud = 10−3 bar for high-altitude clouds to 103 bar for deep-atmosphere clouds |
| log(κcloud) | A measure of cloud opacity (function of phase) | κcloud = 10−7 cm2 g−1 for transparent clouds to 102 cm2 g−1 for very opaque clouds |
| Acloud | A measure of cloud albedo (function of phase) | 0–1 |
| Parameters only in cluded in free molecular retrieval setups | ||
| log(VMR(H2O)) | Base-10 logarithm of VMR of H2O as a function of phase | 10−12 for negligible to 1 for very abundant |
| log(VMR(CO)) | Base-10 logarithm of VMR of CO as a function of phase | 10−12 for negligible to 1 for very abundant |
| log(VMR(CO2)) | Base-10 logarithm of VMR of CO2 as a function of phase | 10−12 for negligible to 1 for very abundant |
| log(VMR(CH4)) | Base-10 logarithm of VMR of CH4 as a function of phase | 10−12 for negligible to 1 for very abundant |
| log(VMR(NH3)) | Base-10 logarithm of VMR of NH3 as a function of phase | 10−12 for negligible to 1 for very abundant |
| log(VMR(AlO)) | Base-10 logarithm of VMR of AlO as a function of phase | 10−12 for negligible to 1 for very abundant |
| Parameters only in cluded in equilibrium chemistry retrieval setups | ||
| C/O | Atmospheric carbon-to-oxygen ratio (global) | 0.1 (sub-solar) to 1.5 (super-solar) |
| [Z] | Atmospheric metallicity (global) | –3 (sub-solar) to 3 (super-solar) dex |
Notes. (a)Ab is the bond albedo. (b)The value of KΛΦ is adjusted until the given value of fred is reached. (c)We use a Gaussian prior on the mass based on radial velocity measurements of WASP-43b (Gillon et al. 2012). We compute the mass based on Rp and log(gp) and then place the prior on this derived parameter.
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