| 摘要: |
| 利用常规观测、地面自动气象站、FY-2E 卫星红外云图以及多普勒天气雷达资料等，对登陆珠江三角洲沿海的1713号台风“天鸽”和1822号台风“山竹”的大风过程进行对比及成因分析。结果表明：台风本身的强度、结构及其变化对台风的影响范围、出现时间和持续时间有密切关系；地面气压场的分布对台风大风的出现时间起到了重要作用，且气压梯度加大有助于增加大风影响范围和影响时间；“喇叭口”地形的狭管效应对风速有加强作用。卫星云图对预测台风大风的影响时间和影响范围有一定参考作用；当台风中心进入雷达的监测范围时，雷达产品可以有效估测风速大小、影响时间和影响范围。 |
| 关键词: 强台风；大风；地形；雷达回波；红外云图 |
| DOI： |
| 投稿时间：2019-05-10 |
| 基金项目:广东省科技厅社会发展科技协同创新体系建设专项（2019B020208015）：广东省龙卷风识别与预警关键技术研究 |
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| Comparion and Cause Analysis of High Wind Processes in NO.1713 Typhoon Hato and NO.1822 Typhoon Mangkhut |
| ZHI Jiangling,HUANG Xianxiang |
| (Foshan Meteorological Service,Foshan 528000 ,China ;Foshan Tornado Research Center,Foshan 528000 ,China) |
| Abstract: |
| Based on conventional observations data, surface automatic weather station, FY-2E satellite infrared cloud pictures, Doppler radar and so on, the gale processes of Typhoon Hato(1713) and Typhoon Mangkhut(1822) landing around Pearl River Delta are compared and the causes are analyzed. The results show that the intensity, structure and their changes are closely related to the influence range, appearance time and duration of the typhoon. The distribution of the ground pressure field plays an important role in the occurrence of typhoon and gale and the increase of pressure gradient helps to increase the scope of influence and impact time. The narrow tube effect of the "horn" terrain enhances the wind speed. The satellite cloud picture has a certain reference function for predicting the influence time and influence range of typhoon high wind.When the typhoon center enters the radar monitoring range, the radar products can effectively estimate the wind speed, influence time and influence range. |
| Key words: super typhoon；high wind；topography；radar echo；infrared cloud picture |
