The solar cycle effect on the atmosphere as a scintillator for meteor observations

摘要: We discuss using high solar cycle atmospheric conditions as sensors for observing meteors and their properties. High altitude meteor trails (HAMTs) have sometimes been observed with HPLA (High Power Large Aperture) radars. At other times they are not seen. In the absence of systematic studies on this topic, we surmise that reason might be differing during observations. EISCAT HAMTs were in 1990 1991. Very Israeli L-band radars 1998, 1999 2001. Through Leonid activity, around latest perihelion passage comet Tempel-Tuttle, optical 200 km reported. This was partly due to new better methods. However, all reported periods seem correlate maximum. The enhanced ionospheric densities extend meteoroid interaction range atmosphere along its path, offering a possibility distinguish differential ablation various meteoric constituents. should studied next maximum, within few years.