Article Type:
Research Article

An Integrating Velocity–Azimuth Process Single-Doppler Radar Wind Retrieval Method

Xudong Liang Laboratory of Typhoon Forecast Technique, Shanghai Typhoon Institute, China Meteorological Administration, Shanghai, China

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Print Publication:
01 Apr 2007
DOI:
https://doi.org/10.1175/JTECH2047.1
Page(s):
658–665
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Abstract

Among the single-Doppler radar wind analysis methods, the velocity–azimuth display (VAD), velocity–azimuth process (VAP), and uniform-wind (UW) methods are widely used because of their simplicity. This paper shows that the VAD, VAP, and UW methods can all be derived from the same relationship based on the azimuthal uniform-wind assumption. Using this assumption, an integrating VAP (IVAP) method is developed that can provide a smoother wind field than the VAP and UW methods and a higher resolution than the VAD method. Using the IVAP technique, the wind fields associated with a heavy rainfall case in Shanghai, China, are retrieved and compared with those from surface observations and wind-profiler data.

Corresponding author address: Xudong Liang, Shanghai Typhoon Institute, 166 Puxi Road, Shanghai, 200030, China. Email: liangxd@mail.typhoon.gov.cn

Abstract

Among the single-Doppler radar wind analysis methods, the velocity–azimuth display (VAD), velocity–azimuth process (VAP), and uniform-wind (UW) methods are widely used because of their simplicity. This paper shows that the VAD, VAP, and UW methods can all be derived from the same relationship based on the azimuthal uniform-wind assumption. Using this assumption, an integrating VAP (IVAP) method is developed that can provide a smoother wind field than the VAP and UW methods and a higher resolution than the VAD method. Using the IVAP technique, the wind fields associated with a heavy rainfall case in Shanghai, China, are retrieved and compared with those from surface observations and wind-profiler data.

Corresponding author address: Xudong Liang, Shanghai Typhoon Institute, 166 Puxi Road, Shanghai, 200030, China. Email: liangxd@mail.typhoon.gov.cn

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Journal of Atmospheric and Oceanic Technology

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