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气象:2024,50(5):577-590
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毫米波雷达在台风外围云系研究中的应用
朱怡杰,李泓,骆婧瑶
(中国气象局上海台风研究所,上海 200030; 中国气象局台风数值预报重点实验室,上海 200030)
Application of Millimeter-Wave Radar in the Study of Typhoon Outer Rainbands
ZHU Yijie,LI Hong,LUO Jingyao
(Shanghai Typhoon Institute, CMA, Shanghai 200030; Key Laboratory of Numerical Modeling for Tropical Cyclones, CMA, Shanghai 200030)
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投稿时间:2022-11-20    修订日期:2024-03-01
中文摘要: 为评估台风条件下毫米波雷达的探测表现,利用上海2018年和2019年4个台风影响期间的毫米波雷达数据,结合雨滴谱仪、静止卫星、S波段天气雷达等资料,探讨了利用毫米波雷达研究台风外围云系的可能性。结果表明:毫米波雷达探测台风外围区域具有良好的性能,对于云降水结构的垂直探测具有一定应用潜力;在降水强度低于5mm·h-1时雷达对于云顶高度的探测较为准确;提出一种融化层亮带判别方法,亮带识别结果与探空观测一致。对比毫米波雷达与S波段天气雷达降水强度反演,结果显示利用毫米波雷达衰减特征能够实现降水强度廓线的反演,但需要对存在显著雨滴碰并增长的降水进行识别并订正,可为毫米波雷达探测台风外围云系提供参考依据。
Abstract:In order to evaluate the performance of millimeter-wave radar in the case of typhoon, the millimeter-wave cloud radar data of Shanghai during the four typhoons in 2018 and 2019, and the data of disdrometer, satellite and S-band weather radar are studied to explore the feasibility of using the millimeter-wave radar to study the outer rainbands of typhoon. It is shown that the millimeter-wave radar has a good detection performance, and has certain application potential for detecting vertical structure of cloud and precipitation. Determination of cloud top height is more accurate when the 〖JP2〗rainfall rate is lower than 5 mm·〖JP〗h-1. A method for bright band determination is proposed, and the results of application are found to be in good agreement with the sounding. Comparison of the retrieval of rainfall intensity by millimeter-wave radar and S-band radar shows feasibility of retrieving rainfall rate profile by taking advantage of the millimeter-wave radar attenuation. In the situation of significant growth of raindrops, it is necessary to revise the retrieval algorithm. This research could provide a reference for millimeter-wave radar detection of typhoon outer rainbands.
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基金项目:国家重点研发计划(2021YFC3000800)、上海市“科技创新行动计划”优秀学术/技术带头人计划 (21XD1404500)、国家自然科学基金面上项目(41575107)和上海市气象局台风科技创新团队共同资助
引用文本:
朱怡杰,李泓,骆婧瑶,2024.毫米波雷达在台风外围云系研究中的应用[J].气象,50(5):577-590.
ZHU Yijie,LI Hong,LUO Jingyao,2024.Application of Millimeter-Wave Radar in the Study of Typhoon Outer Rainbands[J].Meteor Mon,50(5):577-590.