SuperDARN observations of daytime MSTIDs in the auroral and mid‐latitudes: Possibility of long‐distance propagation

The propagation parameters of daytime medium‐scale traveling ionospheric disturbances (MSTIDs) are investigated for the first time using near‐simultaneous SuperDARN radar data obtained at auroral and middle latitudes. The observations suggest that MSTIDs can propagate from auroral to mid‐latitudes with persistent propagation parameters if the dominant propagation direction is approximately equatorward. However, statistical analysis implies that a portion of MSTIDs with higher horizontal phase velocity are unable to reach the mid‐latitude due to enhanced dissipation and the reduction of the ion‐drag effect.