Fig. 4
From: Non-monotonic growth and motion of the South Atlantic Anomaly
SAA characterization vs. time for the period 1840–2020. Dark lines denote the mean model of COV-OBS.x1, light envelopes denote the 100 realizations of the ensemble. a Minimum intensity (purple) and the relative minimum intensity \(|{\vec{B}}|_{\mathrm{min}}^{\mathrm{rel}}\) (turquoise). b Area based on S0 (yellow) and S1 (turquoise). c Longitude of center based on Min (purple), CM0 (yellow) and CM1 (turquoise). d Latitude of center based on Min (purple), CM0 (yellow) and CM1 (turquoise). Vertical dashed lines highlight special events of SAA area decrease (b), SAA center eastward drift (c) and SAA center rapid southward drift (d)