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Abstract
There are a number of ground-based remote sensing equipment operating at or near the Hong Kong International Airport (HKIA), including two wind profilers, a sonic radar and a multi-wavelength microwave radiometer. The wind profilers and sonic radar are able to measure the three components of wind, whilst the microwave radiometer provides the temperature profile of the troposphere continuously. In August 2008, during the period when Typhoon Nuri made landfall in Hong Kong, these equipment provided continuous data for close monitoring of the variation of thermodynamic parameters of the atmosphere. When the eye of Nuri approached HKIA, a subsidence zone with downward motion of up to 6 m/s within the eye was captured by the wind profiler and sonic radar while rise of temperature of 6 deg C together with a temperature inversion at the lower atmosphere were indicated by the microwave radiometer. This paper analyses the remote sensing data mentioned above.