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Terminal Doppler Weather Radar

As the name suggests, the Terminal Doppler Weather Radar (TDWR) was purposely built to serve the terminal area of the airport. Its mission is to detect windshear and microburst associated with convective storms, so as to enhance the safety of aircraft landing and taking off from the Hong Kong International Airport. The radar is strategically located at Tai Lam Chung, about 12 kilometres northeast of Chek Lap Kok so that it has a clear view of the runways, airport approach and departure zones. 

The TDWR is specially designed to operate in a high clutter environment normally present in the vicinity of airports. It makes use of a variety of methods to minimize clutter and to eliminate the influence of such moving targets as birds, aircraft and automobiles. In this way the TDWR can accurately measure the radial wind speed and its fluctuation from which low level windshear can be computed. Equipped with sophisticated computer programs, the TDWR is able to automatically detect thunderstorm-induced windshear phenomena.

Example of thunderstorm-induced windshear phenomenon
 
 

About the locations and further details of the meteorological equipment, please refer to Meteorological Stations for the Airport.

TDWR at Tai Lam Chung

TDWR at Tai Lam Chung

Closer view of TDWR

Closer view of TDWR

Last revision date: <31 Jan 2013>