Precision Variation of Wind Profiler Measurements withHeight in Different Weather Conditions in Summer
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Abstract:
Based on the data of the TWP8L wind profiler in Shenyang, the uniformity of the atmosphere and the detection accuracy of the wind profile radar are estimated. Meanwhile, the observational data of radiosondes are also compared to get the situation that the detection accuracy of wind profiler varies with height in clear day and different precipitation conditions. The results show that the detection accuracy of the wind profile radar is relatively high below 1000 m. In a clear day and the detection range in the uniform precipitation condition, wind profilers have a higher detection accuracy in horizontal winds because the atmosphere is uniform and steady, and the symmetry of the eastwest and southnorth radial winds is better, the average deviations of〖WTBX〗 U〖WTBZ〗W-〖WTBX〗U〖WTBZ〗E and 〖WTBX〗V〖WTBZ〗S-〖WTBX〗V〖WTBZ〗N and the standard deviation are small. The wind speed accuracy of GTS1 is less than 29 m/s, with the correlation being better, and the wind profiler also has higher detection accuracy in horizontal winds. In the precipitation condition with a nouniform detection range, the symmetry of the eastwest and southnorth radial wind is poor, and the vertical velocity varies greatly; the average deviations of 〖WTBX〗U〖WTBZ〗W-〖WTBX〗U〖WTBZ〗E and 〖WTBX〗V〖WTBZ〗S-〖WTBX〗V〖WTBZ〗N and the standard deviation are big, and the wind speed accuracy of GTS1 is more than 20 m/s with the correlation being poor; the wind profiler also has a low detection accuracy in horizontal winds, so the algorithm should be amended to improve data quality and detection performance.
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Supported by:Beijing E-Tiller Technology Development Co., Ltd.
Supported by:Beijing E-Tiller Technology Development Co., Ltd.