Fig. 1: Overview of the plasma lunar tide observation in Earth–Moon space.
From: Evidence for lunar tide effects in Earth’s plasmasphere
a, A plasmaspheric image taken by the IMAGE EUV imager at 14:14 UT on 26 June 2000 viewed above the Earth’s North Pole. b, A plasmaspheric image captured by the Chang’e-3 (CE-3) EUV camera at 13:01 UT on 21 April 2014 viewed from the Moon. The EUV emission intensity (in Rayleigh; 1 Rayleigh = 106 photons cm−2 s−1 sr−1) is indicated by the colour bars at the right of the panels. A sharp drop in the emission intensity represents the plasmapause as denoted by the white curves. The white arrows indicate the direction of the Sun. The black circles indicate the apparent size of the Earth. c, Variations of ∆LPP versus MLT at LP = 0 (full Moon). d), Variations of ∆LPP versus MLT at LP = 6 (third quarter Moon). e, Variations of ∆LPP versus MLT at LP = 12 (new Moon). f, Variations of ∆LPP versus MLT at LP = 18 (first quarter Moon). ∆LPP is plasmapause perturbation data in units of RE (1 RE = 6,371 km). The high tide peaks are marked by the red dashed lines. The vertical error bars in panels c–f denote the 95% confidence intervals.
