Table 9 Statistics of the misfit between CHAOS-7 predictions and independent validation data, that was not used in the CHAOS-7 model construction
From: The CHAOS-7 geomagnetic field model and observed changes in the South Atlantic Anomaly
Validation dataset | CHAOS-7 dataset | |||||
|---|---|---|---|---|---|---|
N | Mean | rms | Mean | rms | ||
Ground Obs RMM SV | ||||||
\(\text {d}B_r/\text {d}t\) (nT/year) | 909 | 0.01 | 3.95 | 0.13 | 4.30 | |
\(\text {d}B_\theta /\text {d}t\) (nT/year) | 909 | − 0.35 | 3.79 | − 0.24 | 4.17 | |
\(\text {d}B_\phi /\text {d}t\) (nT/year) | 909 | 0.09 | 3.31 | 0.04 | 3.93 | |
Swarm scalar | ||||||
F (nT) | 5989 | − 1.37 | 5.76 | 0.19 | 4.18 | |
\(F_{\text{polar}}\) (nT) | 3771 | − 1.67 | 6.49 | 0.61 | 6.62 | |
\(F_{\text{non-polar}}\) (nT) | 2127 | − 0.84 | 4.16 | − 0.04 | 1.96 | |