Table 1
Constituents of the reference atmosphere, their volume mixing ratios, and the studies from which these measurements come from.
| Gas | Volume mixing ratio | References |
|
|
||
| N2 | 0.9839 | Normalisation |
| CH4 | 0.0148 | Niemann et al. (2010) |
|
1.71 × 10-4 | Nixon et al. (2012) |
| CH3D | 9.4 × 10-6 | Nixon et al. (2012) |
| H2O | 1.4 × 10-10 | Cottini et al. (2012) |
| H2 | 1.01 × 10-3 | Niemann et al. (2010) |
| *C2N2 | 2.0 × 10-10 | Teanby et al. (2009a) |
| *C3H4 | 1.2 × 10-8 | Teanby et al. (2009a) |
| *C4H2 | 2.0 × 10-9 | Teanby et al. (2009a) |
| CO2 | 1.6 × 10-8 | Coustenis et al. (2016) |
| HCN | 7.0 × 10-8 | Molter et al. (2016) |
| HC3N | 5.0 × 10-10 | Coustenis et al. (2016) |
| C2H2 | 3.0 × 10-6 | Coustenis et al. (2016) |
| C2H4 | 1.0 × 10-7 | Coustenis et al. (2016) |
| C2H6 | 1.0 × 10-5 | Coustenis et al. (2016) |
| C3H8 | 1.5 × 10-6 | Coustenis et al. (2016) |
| CO | 4.6 × 10-5 | Maltagliati et al. (2015) |
| C6H6 | 4.0 × 10-10 | Coustenis et al. (2016) |
Notes. N2 abundance has been normalised so that the total sum of the volume mixing ratios of all the gases of our reference atmosphere is equal to 1. Asterisks denote the gases for which the abundances are retrieved. Their volume mixing ratios are a priori values.
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