| 东海黑潮暖舌对热带气旋“派比安”(1807)强度的影响 |
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| 作者姓名： | 赵振驰 许士斌 黄菲 董茹月 陈文聪 樊婷婷 |
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| 作者单位： | 中国海洋大学海洋与大气学院,山东 青岛 266100;中国海洋大学海洋与大气学院,山东 青岛 266100 ；中国海洋大学物理海洋教育部重点实验室,山东 青岛 266100 ；中国海洋大学海洋高等研究院,山东 青岛 266100;国家海洋局北海环境监测中心,山东 青岛 266061;中国气象科学研究院人工智能气象应用研究所,北京 100081;青岛科技大学数理学院,山东 青岛 266061 |
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| 基金项目： | 国家自然科学基金面上项目(41975061) |
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| 摘 要： | 通过使用天气研究与预报(Weather Research and Forecasting,WRF)模式对热带气旋(Tropical Cyclone,TC)个例“派比安”(1807)进行了一组数值试验,分析了东海黑潮暖舌对“派比安”强度的影响。研究结果表明,东海黑潮暖舌高海面温度(以下简称“海温”)导致TC区域内海气界面热通量显著增加,并造成TC边界层不稳定特征发展,形成了有利于垂直对流发展的边界层环境。因此TC内特别是TC眼墙处对流更为活跃,TC强度显著提高,同时黑潮暖舌对TC的局部加热还会引起TC内部对流活动的非对称分布。根据数值试验的结果,黑潮暖舌为“派比安”整体动能增加做出约24.7%的贡献,中心气压变化对东海黑潮暖舌高海温特征的响应时间约为10 h。此外,在黑潮暖舌作用下,“派比安”7级风圈半径扩张16.3%,最大风速半径收缩10.7%。
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| 关 键 词： | 热带气旋 东海黑潮 海气相互作用 热带气旋边界层 |
| 收稿时间： | 2022/11/6 0:00:00 |
| 修稿时间： | 2023/1/4 0:00:00 |
Impact of Kuroshio warm tongue in the East China Sea on intensity of Tropical Cyclone Prapiroon (1807) |
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| Authors: | ZHAO Zhenchi XU Shibin HUANG Fei DONG Ruyue CHEN Wencong FAN Tingting |
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| Abstract: | The impact of Kuroshio warm tongue in the East China Sea on the intensity of Tropical Cyclone (TC) Prapiroon (1807) is analyzed by performing a set of numerical experiments using the Weather Research and Forecasting (WRF) model. The results suggest that the high sea surface temperature of the Kuroshio warm tongue leads to the significant increase of heat flux at the air-sea interface under the TC, and causes the development of instability characteristics in the TC boundary layer, forming a boundary layer environment conducive to the development of vertical convection. Therefore, the convection in the TC, especially in the TC eyewall, is more active, and the TC intensity is significantly increased. The local heating of TC by Kuroshio warm tongue also causes the asymmetric distribution of convections in the TC. According to the results of numerical experiments, the Kuroshio warm tongue contributes about 24.7% to the total kinetic energy of Prapiroon, and the response time of central pressure change to the high sea surface temperature of Kuroshio warm tongue is about 10 h. In addition, under the effect of Kuroshio warm tongue, the radius of moderate gale of Prapiroon expands by 16.3%, and the radius of maximum wind shrinks by 10.7%. |
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