Table 2
Global circulation models.
| Model 1 | Red. χ2 | ||||
|---|---|---|---|---|---|
| Pure zonal (solid-body) | Vz,0 cos λ | Zonal amplitude | Vz,0 |  |
6.14 |
| + κ | Offset | κ |  |
||
| Model 2 | |||||
| Zonal (solid-body) | Vz,0 cos λ | Zonal amplitude | Vz,0 |  |
3.31 |
| and Meridional | + Vm,0 | sin λ| | Meridional | Vm,0 |  |
|
| + κ | Offset | κ |  |
||
| Model 3 | |||||
| Zonal (solid-body), | Vz,0 cos λ | Zonal amplitude | Vz,0 |  |
2.90 |
| Noon zonal variation | − Vz,1 sin ϕ | Departure to zonal | Vz,1 |  |
|
| and Meridional | + Vm,0 | sin λ| | Meridional | Vm,0 |  |
|
| + κ | Offset | κ |  |
||
| Model 4 | |||||
| Zonal (solid-body), | Vz,0 cos λ | SB zonal amplitude | Vz,0 |  |
1.42 |
| Equatorial noon zonal variation |  |
Departure to zonal | Vz,1 |  |
|
| Sigma of the Gaussian | σz,1 |  |
|||
| and Meridional | + Vm,0 | sin λ| | Meridional | Vm,0 |  |
|
| + κ | Offset | κ |  |
||
| Model 5 | |||||
| Zonal (solid-body), | Vz,0 cos λ | SB zonal amplitude | Vz,0 |  |
1.41 |
| Equatorial decentered zonal variation |  |
Departure to zonal | Vz,1,sin |  |
|
 |
Departure to zonal | Vz,1,cos |  |
||
| Sigma of the Gaussian | σz,1 |  |
|||
| and Meridional | + Vm,0 | sin λ| | Meridional | Vm,0 |  |
|
| + κ | Offset | κ |  |
||
| Model 6 | |||||
| Zonal (solid-body), | Vz,0 cos λ | SB zonal amplitude | Vz,0 |  |
1.51 |
| Equatorial noon zonal variation, |  |
Departure to zonal | Vz,1 |  |
|
| Sigma of the Gaussian | σz,1 |  |
|||
| and Meridional including | + Vm,0 | sin λ| | Meridional | Vm,0 |  |
|
| longitudinal variation (noon centered) | + Vm,1 sin ϕ | Departure to meridional | Vm,1 |  |
|
| + κ | Offset | κ |  |
||
| Model 7 | |||||
| Zonal (solid-body), | Vz,0 cos λ | SB zonal amplitude | Vz,0 |  |
1.08 |
| Equatorial noon zonal variation |  |
Departure to zonal | Vz,1 |  |
|
| Sigma of the Gaussian | σz,1 |  |
|||
| N-S zonal asymmetry | − Vz,2 cos λ sin (2λ) | Amplitude NS asymmetry | Vz,2 |  |
|
| and Meridional | + Vm,0 | sin λ| | Meridional | Vm,0 |  |
|
| + κ | Offset | κ |  |
||
Notes. The value Vz,0 is the amplitude of zonal winds along the equator, Vz,1 is the amplitude of the solid-body (SB) zonal component for models that have longitudinal variations of the zonal circulation (models 4 to 7), Vm,0 is the amplitude of meridional winds at latitude λ = 45°, and κ is a global RV offset. Model 3: Vz,1 (“noon zonal” component) is the amplitude of departure to solid body rotation which is minimum at noon. Models 4, 6, and 7: Vz,1 is the amplitude of the equatorial noon-centered zonal component. Model 5: Vz,1,sin and Vz,1,cos are the amplitudes of the equatorial decentered zonal components for the sine and cosine, respectively. Model 6: Vz,1 is the amplitude of the noon-centered meridional component. All terms are in m s−1 except σz,1, which is in degrees.
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