Fig. 2From: Correlation analysis of field-aligned currents from the magnetic measurements of GRACE follow-on missionProfile of FACs derived from GF1 (black) and GF2 (red) for an event on 31 October 2019 when the mission crossed the southern auroral latitudes. The upper panel shows the time series, while the lower two panels show the variations over MLAT, of (middle) the original 1-Hz resolution and (bottom) low-pass filtered (cutoff period of 20 s) dataBack to article page