Table 3. Summary of the quality metrics for the Standard Model (Section 3.1) for all model coefficients given in the geographic frame. Also shown in parenthesis are the metrics calculated for the 
and 
coefficients in the Solar Magnetic (SM) frame. The metrics in the geographic frame show good recovery of the magnetospheric signal, especially for the order zero coefficients. In the SM frame, the metrics remain good for 
and mostly for 
except for the minimum coherence.
and 
coefficients in the Solar Magnetic (SM) frame. The metrics in the geographic frame show good recovery of the magnetospheric signal, especially for the order zero coefficients. In the SM frame, the metrics remain good for 
and mostly for 
except for the minimum coherence.From: Rapid modelling of the large-scale magnetospheric field from Swarm satellite data
Spherical Harmonic Coefficient | ||||||
|---|---|---|---|---|---|---|
|
|
|
|
|
| |
RMS misfit (nT) | 3.53 (1.10) | 1.60 | 1.72 | 1.08 | 0.67 (0.72) | 0.70 |
Squared correlation | 0.99 (0.99) | 0.90 | 0.90 | 0.98 | 0.90 (0.89) | 0.88 |
Min. coherence (>2dys) | 0.99 (0.99) | 0.69 | 0.66 | 0.76 | 0.66 (0.33) | 0.63 |
Best-fit gradient | 1.01 (1.01) | 1.08 | 1.07 | 1.09 | 1.20 (1.16) | 1.18 |
Best-fit y-intercept (nT) | −3.10 (−3.85) | −0.28 | 0.42 | 0.03 | 0.00 (−0.06) | −0.01 |
(SM)
(SM)