用L波段探空测风雷达评估风廓线雷达测风准确性

Accuracy Estimation of Wind Profile Radar by L-band Radar

在晴空和降水两种情况下,将L波段探空测风雷达数据对风廓线雷达四波束和五波束水平风计算方法所得到的水平风进行对比评估,得到较优的四波束计算方法,并对风廓线雷达在一天不同时段和一年不同季节与探空雷达数据进行对比分析,一定程度上得到风廓线雷达在一天中白天的测风准确性高于夜间,在一年中夏季的测风准确性最高,春秋两季次之,冬季最低的结论。

The horizontal wind speed data calculated from wind profile sounding by 4 beams and 5 beams method was compared with L-band radar sounding results under clear sky and precipitation conditions,respectively,an optimized 4 beams method was obtained.The wind profile radar sounding data of a year in different hours and seasons was compared and analyzed,results showed that the accuracy of wind profile radar was higher in daytime than that in nighttime,and the accuracy was higher in summer,followed by spring and autumn,the lowest in winter.