3차원 레이더 바람장을 이용한 공항 급변풍 탐지

Abstract

A wind shear detection system using WISSDOM (WInd Synthesis System using DOppler Measurements) a 1 km resolution analysis field incorporating radar radial velocities through 3D-VAR was developed and evaluated to detect wind shear along aircraft glide paths at domestic airports. This system addresses limitations of existing LLWAS, which detects low-level wind shear only within a narrow area near runways at altitudes below 30 m. Vertical and horizontal wind shear detection techniques were applied in parallel, with performance verified using LLWAS alarm data and IATA aircraft observations from Incheon, Jeju, and Yangyang airports. Wind shear values from the system were generally lower than the ICAO standard (5 kt/100 ft). Optimal thresholds maximizing TSS were derived: vertical 1.0~1.5 kt/100 ft and horizontal 1.6~2.4 kt/km. Performance was highest at Incheon (horizontal wind shear PODY 0.82, AUC 0.71), followed by Jeju, and lower at Yangyang. Case analyses using AMDAR data showed spatial similarity between observed and detected wind shear events, supporting the system’s operational capability. Despite resolution limits for sub-kilometer phenomena, the system effectively detects mesoscale wind shear and offers a practical means to enhance aviation safety and operational efficiency.