两部近距离风廓线雷达资料的对比分析

Comparative Analysis of Two Adjacent Wind Profile Radars Data

在不同天气条件下,对大连市金州区固定式风廓线雷达和大连市新机场车载移动式风廓线雷达资料进行对比分析,研究结果表明:1)随着数据的可信程度越高,两组探测风速的相关性越好,标准差越小,两种风廓线雷达资料质量可信的风速数据,相关系数达到了0.92,标准差为4.31 m/s。2)质量可信的两组风速数据,绝对误差小于3 m/s的累计概率达到了92%。3)随着高度的增加,两部风廓线雷达探测的风速偏差增大,在1 km以下偏差增大的幅度较大,3 km以上增加的幅度较小。在1 km以下随着高度的增加,两组探测风速的相关系数明显的增大。4)在探测数据完整度和可信度高的情况下,在大风天气、气旋系统、强冷空气天气过程中,两部风廓线雷达的探测风速,均表现出了较高的一致性,随着高度的增加,这种一致性表现出减小的趋势,多表现在4 km以上一致性较差。

Under different weather conditions,the comparative analyses of fixed wind profiler radar of Jinzhou district in Dalian city and car mobile wind profiler radar of Dalian new airport were discussed in this study.1)As two sets of detected wind speeds presented higher confidence,the correlation between them was better,and the standard deviation of which was smaller.The correlation coefficient reached 0.92 and the standard deviation was 4.31 m/s.2)The cumulative probability reached 92%with the absolute error of two sets of wind speed data less than 3 m/s.3)The wind speed deviation detected by the two wind profile radars increased as the altitude rose.The increased amplitude of the wind speed deviation was larger below 1 000 m while smaller above 3 000 m.The correlation coefficient between the two groups of detected wind speeds increased significantly as the height increased below 1 000 m.4)The two sets of wind speeds showed high consistency under strong wind weather,cyclone system,or strong cold air weather.The consistency presented negetive trend as the height increased,especially above 4 000 m.