Abstract Kilometric Continuum (KC) is a non‐thermal radio emission with a kilometer‐scale wavelength, but its global distribution in the magnetosphere has remained understudied. Using Van Allen Probes data from 30 August 2012 to 14 October 2019, we investigate KC's spatial characteristics for the first time. Our analysis shows that KC emissions are predominantly observed in the range of magnetic local time (MLT) = 00–12, with significantly fewer detections in the range of MLT = 12–24, suggesting a dawn‐dusk asymmetry associated with plasmapause formation and propagation. Additionally, more KC samples occur in the northern hemisphere during MLT = 00–06 and in the southern hemisphere during MLT = 06–12, revealing evident hemispheric asymmetry. High occurrence rate of KC stays at lower ‐shells and/or high index conditions. These results improve our understanding of KC emissions and offer insights for studying similar radio emissions in other planetary magnetospheres.
Zhang et al. (Wed,) studied this question.