Source | Coordinate | \(\ell_{\text{max}}\) | SH decomposition |
---|---|---|---|
Core \(g_{\text{c}}\) | GEO | 20 | Standard |
Lithospheric \(g_{\text{l}}\) | GEO | 76 | Standard |
Remote magnetospheric \(g_{\text{rm}}\) | GSM | 1 | Zonal |
Close magnetospheric \(g_{\text{m}}\) | SM | 15 | Zonal |
Fluctuating magnetospheric \(g_{\text{fm}}\) | SM | 15 | Zonal iso |
Residual ionospheric/ induced \(g_{\text{ii}}\) | MAG | 50 | Zonal iso |
Field-aligned currents \(g_{\text{fac}}\) | SM | 15 | Zonal iso |