Table 1.
Rossby mode fit parameters for the GONG++ vorticity power spectrum from 2001 to 2019.
| m | ω0/2π | Γ/2π | S | N | S/N |
|---|---|---|---|---|---|
| [nHz] | [nHz] | [10−2] | [10−2] | ||
| 3 | −242.8 ± 3.1 |
 |
 |
 |
16.5 |
| 4 | −197.7 ± 2.7 |
 |
 |
 |
19.3 |
| 5 | −153.2 ± 3.7 |
 |
 |
 |
7.4 |
| 6 | −122.1 ± 4.4 |
 |
 |
 |
10.4 |
| 7 | −110.4 ± 2.7 |
 |
 |
 |
32.7 |
| 8 | −91.7 ± 2.7 |
 |
 |
 |
44.0 |
| 9 | −84.0 ± 3.2 |
 |
 |
 |
22.6 |
| 10 | −74.8 ± 3.0 |
 |
 |
 |
17.1 |
| 11 | −55.6 ± 4.0 |
 |
 |
 |
8.5 |
| 12 | −60.0 ± 3.2 |
 |
 |
 |
9.8 |
| 13 | −54.9 ± 4.8 |
 |
 |
 |
6.7 |
| 14 | −51.6 ± 4.9 |
 |
 |
 |
4.5 |
| 15 | −43.0 ± 4.5 |
 |
 |
 |
7.6 |
Notes. The fit for each mode m was performed in a frequency interval of size 600 nHz, which was stable for our chosen fitting method, centered on the reference frequency −2Ωeq/(m + 1)/2π. The 68% confidence intervals are included for each fit parameter. The mode frequencies are measured in the co-rotating frame (rotation rate 453.1 nHz). Negative frequencies indicate retrograde propagation.
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