The High-Latitude Dawn-Dusk Asymmetry of Ionospheric Plasma Distribution in the Northern Hemisphere

摘要

The high-latitude dawn-dusk asymmetrical distribution of the Mean Total Electron Content (MTEC) in the northern hemisphere was statistically investigated using Global Navigation Satellite System (GNSS) vertical TEC data in 2014. In the geomagnetic latitude (MLAT)/geomagnetic local time (MLT) coordinate system, the local time of 0 hr ≤ MLT 0 in summer, the DMTEC and DDR are larger when IMF By 0, especially in spring and winter.