Monitoring and Prediction of Low Level Windshear and Turbulence at the Hong Kong International Airport
Pak Wai Chan
Hong Kong Observatory
腾讯会议ID：543 921 413
Low level windshear and turbulence could be hazardous to the departing and arriving aircraft at the airport. At the Hong Kong International Airport, the major kind of windshear is due to terrain disruption of the airflow. This report focuses on the effort of the Hong Kong Observatory in the monitoring and prediction of low level windshear and turbulence. Since the windshear mostly occurs in clear air conditions, the Observatory introduced the world’s first Light Detection And Ranging (LIDAR) system to the airport in 2002 for operational alerting purpose. The LIDAR reveals many interesting features of wind changes at the airport, including mountain wake flow, mountain wave, tiny vortices, etc. The predictability of such features is also studied by running Weather Research and Forecasting (WRF) model at large eddy simulation model with a spatial resolution down to 40 m. Some recent results of the modelling of windshear features as well as turbulence intensity would be covered in the talk.
Mr. P.W. Chan is an Assistant Director of the Hong Kong Observatory responsible for weather forecasting and warning services for the public. Before that position, Mr. Chan has been working at the Hong Kong International Airport for over 20 years, with research and operational efforts in airport meteorological instrumentation, low level windshear and turbulence alerting, and high resolution numerical weather prediction. He is a visiting professor of a number of universities in mainland China and an adjunct associate professor of the University of Hong Kong. He is a fellow of the Royal Meteorological Society and a Chartered Meteorologist. He has published more than 260 papers in SCI journals, with a significant portion of the papers focusing on the applications at the airport. He is a vice chair of the Expert Team of Upper Air Measurement at World Meteorological Organization and a chair of a working group of International Civil Aviation Organization in Asian region.