ISSN 1000-0526
CN 11-2282/P
CN 11-2282/P
Archive > Volume 51 Issue 5 > 2025,51(5):517-528. DOI:10.7519/j.issn.1000-0526.2025.033101 Prev Next
Speed Comparison and Analysis of Wind Lidar and Doppler Weather Radar
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Abstract:
This study presents a comparative analysis of wind observations between a Doppler weather radar and a wind lidar. By integrating high-resolution vertical profiles of horizontal/vertical wind speeds and directions from the wind lidar, the radial velocities of the wind profiles relative to the Doppler weather radar are derived, and the consistency of these velocities with radial velocities from nighttime clear-air echoes observed by the weather radar is analyzed. This method was applied to evaluate the May 2023 data from the CINRAD/SA Doppler weather radar and a co-located wind lidar in Daxing, Beijing. The results indicate that there is a mean radial velocity difference of 0.37 m·s-1 between the two systems with a monthly standard deviation of 3.66 m·s-1. Daily assessments suggest that the average differences of radial velocities in 23 days between the two systems are within ±1 m·s-1, while their standard deviations in 25 days are below 4 m·s-1. The analysis demonstrates that the radial velocity of weather radar can be analyzed day by day and month by month based on wind lidar data combined with weather radar clear-air echo, supporting early detection of biases caused by equipment malfunctions or inadequate maintenance. Furthermore, the results confirm that the clear-air echo of weather radar is mainly generated by meteorological factors, and the radial velocity of clear-air echo of weather radar at night can represent the atmospheric wind field velocity. The nighttime clear-air echoes observed by the weather radar can predominantly reflect meteorological characteristics, with their radial velocities accurately representing atmospheric wind field.
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Clc Number:
P412，P414
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