Table 3
ExoRad results: Effect of magnetic drag on WASP-18 b’s climate state characteristics.
| Properties | No drag | Uniform drag | Active drag | Anisotropic drag |
|---|---|---|---|---|
| Max wind speed at 10−3 bar | 10971 m/s | 6089 m/s | 8532 m/s | 7008 m/s |
| Jet widtha at 10−1 bar | 54◦ | – | 39◦ | 54◦ |
| Jet widtha at 10−3 bar | 56◦ | – | 52◦ | 56◦ |
| Tgas,max at 10−1 bar | 3201 K | 3255 K | 3197 K | 3218 K |
| Tgas,max location at 10−1 bar | 12.5◦ east | 2.5◦ east | 7.5◦ east, 20◦ south | 7.5◦ east, 16◦ north/ 20◦ south |
| Tgas,max at 10−3 bar | 3085 K | 3090 K | 3084 K | 3088 K |
| Tgas,max location at 10−3 bar | 27.5◦ east, 32◦ north/ south | 2.5◦ east | 2.5◦ east, 24◦ south | 7.5◦ east, 16◦ north/ south |
| Day-night differenceb (relative) at 10−1 bar | 1208 K (0.46) | 1393 K (0.51) | 1338 K (0.5) | 1375 K (0.52) |
| Day-night differenceb (relative) at 10−3 bar | 1832 K (0.60) | 1726 K (0.57) | 1934 K (0.65) | 1971 K (0.66) |
| Evening-morning differencec (relative) at 10−1 bar | 455 K (0.23) | 42 K (0.02) | 438 K (0.23) | 498 K (0.27) |
| Evening-morning differencec (relative) at 10−3 bar | 328 K (0.15) | 3 K (0.002) | 145 K (0.07) | 110 K (0.05) |
Notes. The table shows the modeling results for different climate state characteristics: maximum wind speed, equatorial jet width, day-night gas temperature difference, evening-morning gas temperature difference, and the maximum (or hotspot) gas temperature, Tgas,max, and its geographic location. (a)The jet width was calculated with the full width at half maximum for the total atmosphere and is given in degrees of latitude. (b)Difference between the day (Tday) and nightside (Tnight) averaged temperatures. Their relative difference was calculated by (Tgas,day − Tgas,night)/Tgas,day. (c)The difference between the evening (Tgas,evening) and morning terminator (Tgas,morning) averaged temperatures. Their relative difference was calculated by (Tgas,evening − Tgas,morning)/Tgas,evening.
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