An experimental dual-polarization X-band weather radar was installed near the Hong Kong International Airport in 2012 for detection of microbursts and windshear associated with thunderstorms. The detection software was developed based on a conceptual model of thunderstorm-induced microbursts. In order to improve data quality, a distinctive scanning strategy was designed to achieve higher update frequency and reduce catastrophic errors. During a series of thunderstorm episodes in early 2013, the system detected a number of microburst and windshear events bearing similarity with those detected by a C-band Terminal Doppler Weather Radar that had been in operation since 1997. An attempt was made to compare the use of velocity from vertical polarization (Vv) and horizontal polarization (Vh) together with specific differential phase shift (KDP) to address attenuation problems associated with heavy precipitation. This paper reports findings of the experiment and discusses about limitations of X-band weather radar in microburst and windshear detection.
- Indicates paper has been withdrawn from meeting
- Indicates an Award Winner