参考答案(飞行员应答)
Weather radar has several limitations. First, it only detects precipitation, not turbulence directly. Turbulence is inferred from precipitation intensity. Second, radar shadowing occurs when a strong storm blocks the radar beam, hiding weather behind it. Third, attenuation happens in heavy rain, reducing the radar's ability to see beyond the storm. Fourth, the radar cannot detect dry turbulence, clear air turbulence, or volcanic ash. Fifth, the tilt setting must be adjusted correctly; if set too low, it may show ground returns instead of weather. Finally, storms can develop faster than the radar can update. Therefore, pilots should never rely solely on weather radar. They should also use ATC weather reports, onboard lightning sensors, and visual observation. Safety requires multiple sources of information.
气象雷达有若干局限性。第一,它只探测降水,不能直接探测颠簸 —— 颠簸是通过降水强度推断的。第二,当强雷暴阻挡雷达波束时会产生雷达阴影,遮蔽后方的天气。第三,强降雨中会发生信号衰减,降低雷达穿透雷雨后的探测能力。第四,雷达无法探测干性颠簸、晴空颠簸或火山灰。第五,必须正确调整俯仰角设置,如果设得过低,可能显示地面回波而非天气。最后,雷暴的发展速度可能快于雷达的更新速度。因此,飞行员绝不能仅依赖气象雷达,还应结合空管天气报告、机载雷电传感器和目视观察。安全需要多种信息来源。