Free Access
Table 2
Main parameters for the 3D simulations.
| Earth-like planet | Tidally locked planet | Units | |
|---|---|---|---|
| OASIS model parameters | |||
| Grid horizontal resolution | 1 | 1 | degrees |
| Number of vertical layers | 39 | 39 | # |
| Time step | 100 | 50 | s |
| Bulk planet parameters | |||
| Planetary radius, Rplanet | 6.371 × 106 | 6.371 × 106 | m |
| Planetary rotation rate, Ω | 7.292 × 10−5 | 1.212 × 10−5 | s−1 |
| Surface gravity, g | 9.8 | 9.8 | m s−2 |
| Top of the atmospheric domain, ztop | 36 | 36 | km |
| Specific heat of background gas at constant pressure, cp | 1004.6 | 1004.6 | J kg−1 K−1 |
| Background gas constant, Rd | 287.04 | 287.04 | J kg−1 K−1 |
| Reference pressure, p00 | 105 | 105 | Pa |
| Planetary obliquity, ϵ | 0 | 0 | degrees |
| Orbital eccentricity, α | 0 | 0 | – |
| Large-scale condensation | |||
| Ratio of gas constant for dry air to that for vapour, ϵ | 0.622 | 0.622 | – |
| Control temperature for qsat calculation, T0 | 273.16 | 273.16 | K |
Saturation vapour pressure at T0,  |
610.78 | 610.78 | Pa |
| Latent heat at T0, L | 2.5 × 106 | 2.5 × 106 | J kg−1 |
| Gas constant for water vapour, Rq | 2.5 × 106 | 2.5 × 106 | J kg−1K−1 |
| Water density, ρq | 1000 | 1000 | kg m−3 |
| Surface conditions | |||
| Equator-to-pole difference, ΔT | 29 | 100 | K |
| SST at the pole, Tmin | 271 | 230 | K |
| Width parameter for sea surface temperature, Δl | 26 | 35 | degrees |
| Surface fluxes | |||
| Bulk transfer coefficients for sensible heat, CH | 0.0044 | 0.0044 | – |
| Bulk transfer coefficients for water vapour, CE | 0.0044 | 0.0044 | – |
| Constants for drag coefficient, Cd0 | – | 0.0007 | – |
| Constants for drag coefficient, Cd1 | – | 0.000065 | – |
| E-folding time for the Rayleigh friction, 1/kf | 1 | – | Earth day−1 |
| Threshold sigma level for the Rayleigh friction, σb | 0.7 | – | – |
| Top of the boundary layer, ppbl | 850 | – | hPa |
| Vertical mixing gradient parameter, pstrato | 100 | 100 | hPa |
| Radiation | |||
Equator-pole temperature difference,  |
65 | 40 | K |
Vertical temperature gradient parameter,  |
10 | 40 | K |
| Maximum equilibrium temperature, TEquator | 294 | 254 | K |
| E-folding time parameter #1 for temperature relaxation, 1/ka | 40 | 20 | Earth day−1 |
| E-folding time parameter #2 for temperature relaxation, 1/ks | 4 | – | Earth day−1 |
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.