Laser Technology, Volume. 49, Issue 3, 437(2025)
Application of wind LiDAR in wind turning forecast at Lhasa Gongga Airport
Lhasa Gonggar Airport is located in the Yarlung Zangbo River Valley. Due to the combined effects of topography and underlying surface, the wind field environment here is complex. In order to verify the wind field detection capability of wind light detection and ranging (LiDAR) on the high plateau and summarize the experience of wind change forecast, FC-Ⅲ wind LiDAR was used. Combined with aircraft air reports and ground observation data, the wind shear monitoring capability and wind change process LiDAR product characteristics were analyzed. The results show that the high temporal and spatial density monitoring capability of wind LiDAR can better capture the wind shear on the approach route within a range of 4000 m; can The conduction of the mid-level outflow ranging from 1000 m to 2000 m and the advancement of the near-ground strong wind area which below 1000 m caused by convective clouds in advance can be tracked by the LiDAR product of the wind change process in the rainy season. The refined wind change time of the runway based on factors such as maximum wind speed and distance were further calculated; during the dry season, the triggering height of southerly component is 1000 m to 1500 m, there are characteristics such as mid-level momentum loss, vertical airflow and divergence mutation after ground wind turning, 20 min before turning to the west wind, the westerly component ranging from 1000 m to 2000 m has increased to more than 10 m/s, the middle-level and high-level westerly component are maintained after ground wind turning, and the relationship between the inflow area advancement position and the wind transition node can be statistically analyzed as an accumulation index for refined forecasting. This study has important reference value for broadening the application scenarios of wind LiDAR in high plateaus and improving the level of refined ground wind forecasting.
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WANG Kang, ZHOU Li, LU Xuebei, DING Meili, Qimeiwangzhen. Application of wind LiDAR in wind turning forecast at Lhasa Gongga Airport[J]. Laser Technology, 2025, 49(3): 437
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Received: May. 14, 2024
Accepted: Jul. 11, 2025
Published Online: Jul. 11, 2025
The Author Email: WANG Kang (402724215@qq.com)