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Table 3
Summary of the thermochemical model results.
| Model | Kzz | yCH4 | C/H | yCO | O/H |
| cm2 s-1 | × 10-2 | × ⊙a | × 10-9 | × ⊙b | |
|
|
|||||
| Nominal | 108 | 1.6c | 18 | 2.1 | 501 |
| CH4-rich | 108 | 3.2d | 40 | 2.1 | 417 |
| low Kzz | 107 | 1.6 | 13 | 2.1 | 631 |
| high Kzz | 109 | 1.6 | 23 | 2.1 | 339 |
Notes.We obtained values so as to reach the 2.1 × 10-9 upper limit of Teanby & Irwin (2013) for the CO upper tropospheric mole fraction.
(a)
Solar C/H volume ratio: 2.69 × 10-4 (Asplund et al. 2009).
(b)
Solar O/H volume ratio: 4.90 × 10-4 (Asplund et al. 2009).
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