The second LIDAR installed
The Observatory installed the second LIDAR at the airport in November 2006, which greatly enhances the reliability of the LIDAR windshear alerting system.
Since most of the aircraft land at the north runway and windshear has greater effect on the arriving flights, the second LIDAR is installed on the rooftop of the northern fire station to command a good view of that runway. It performs more frequent scanning over the arrival runway corridors, strengthening the monitoring of windshear.
The second LIDAR strengthens the monitoring of windshear over the north runway.