银川河东国际机场弱压场背景下地面风的预报

The Forecast of Ground Wind under the Weak Pressure Field of Yinchuan Hedong International Airport

摘要: 复杂下垫面下地面弱压场尤其是风向的准确预报对于飞机跑道的选取，避免飞机在进近过程中由于顺风过大复飞有积极意义。本文利用气象局自动站5 mins风场资料、激光雷达、风廓线雷达、以及多普勒天气雷达资料，选取2023年8月9日一次典型弱压场天气背景的风场进行分析讨论，得出：气象局自动站、激光雷达、风廓线、多普勒天气雷达资料在风场预报中各有千秋；对于地面弱压场下风向的预报，多普勒雷达0.5˚仰角速度资料优势明显；在实际业务中需要综合利用以上资料来获得更准确的预报。

Abstract: The accurate prediction of complex underlying surface weak pressure fields, especially wind direc-tions, is particularly significant for selecting aircraft runways and avoiding aircraft go-around due to excessive tailwind during approach. In this study, the 5-minute wind field data from the meteorological bureau’s automatic stations, as well as the data from the laser radar, wind profiler, and Dop-pler weather radar, were used to analyze and discuss a typical weak pressure field weather back-ground wind field on August 9, 2023. The findings indicate that each of the meteorological bureau’s automatic stations, laser radar, wind profiler, and Doppler weather radar data have their own ad-vantages in wind field prediction. For predicting wind direction under weak pressure fields at the ground level, the Doppler radar data at a 0.5˚ elevation angle showed a significant advantage. It is necessary to comprehensively utilize the aforementioned data in practical operations to obtain more accurate forecasts.