Leonids meteor rates, 1999–2001 Original Research Article

A SkiYmet all-sky meteor radar has been operating at Cachoeira Paulista (22°S, 46°W), Brazil, since March 1999. The total numbers of meteor detections ascribable to the Leonids stream were 21 on November 18, 1999, 74 on November 17, 2000, 63 on November 18, 2000 and 115 on November 18, 2001. All the detections clearly associated with the Leonids were for heights above 95 km, except for 2001, when 27 detections were for heights between 90 and 95 km. The detected Leonids fluxes represent 6%, 13%, 11% and 23%, respectively, of the total daily meteor detections from above 95 km, implying that they make a significant contribution to the total input of meteoric material in the relevant height range.