文献类型：期刊文献

中文题名：台风“利奇马”快速增强过程中的海洋响应

英文题名：Analysis of Ocean Response During Rapid Intensification of Typhoon Lekima

作者：陈鹏[1,2];万凌峰[3];常舒捷[1]

机构：[1]广东海洋大学海洋与气象学院,广东湛江524088;[2]中国气象科学研究院,北京100081;[3]中国海洋大学海洋高等研究院,山东青岛266100

年份：2022

卷号：42

期号：4

起止页码：72

中文期刊名：广东海洋大学学报

外文期刊名：Journal of Guangdong Ocean University

收录：CSTPCD、、北大核心、北大核心2020

基金：广东海洋大学科研启动经费资助项目(060302032107);国家自然科学基金青年基金项目(42005063)。

语种：中文

中文关键词：台风“利奇马”;海洋响应;WRF模式;数值模拟

外文关键词：Typhoon Lekima;ocean response;WRF model;numerical simulation

中文摘要：【目的】研究超强台风“利奇马”快速增强过程中的海洋响应。【方法】利用中尺度WRF(The Weather Research and Forecasting)模式模拟超强台风“利奇马”,结合中国气象局热带气旋最佳路径数据集和欧洲哥白尼全球海洋物理再分析资料,分析台风在快速增强过程中的海洋响应。【结果】在台风“利奇马”快速增强过程中,海表面温度呈下降趋势,约-1.3℃/d,且降温范围向周围扩大;热带气旋路径区域海平面高度呈负异常;台风内核热带气旋热势(Tropical Cyclone Heat Potential,TCHP)显著降低,而在远离台风路径的地区TCHP会增加;海表盐度呈下降趋势,在快速增强结束时达到最低;台风中心附近出现正负速度中心交替现象,呈弧形分布向周围传播,最终消散。【结论】海表面温度和海平面高度负异常会减弱热带气旋快速增强;热带气旋快速增强过程导致的TCHP负异常也会抑制台风增强过程的发展;热带气旋快速增强前后台风内核、外围海域TCHP下降率不一致,外围的下降率在快速增强前大于内核;海表盐度的下降与台风带来的强降雨和强风有关。快速增强期间内核TCHP下降率达到最大,与海表温度、盐度以及海表面风场有良好的对应关系。

外文摘要：【Objective】 To study the Ocean Response during the rapid intensification of super typhoon Lichma. 【Methods】 We simulated Super Typhoon Lekima mainly by using the mesoscale WRF(The Weather Research and Forecasting) model, and analyzed the ocean response during the rapid intensification(RI) of the typhoon by combining the best path data set of tropical cyclone from China Meteorological Administration and the European Copernicus Global Ocean Physical Reanalysis.【Results】 During the rapid intensification of typhoon Lichma, the sea level temperature decreased about 1.3 ℃/d and the cooling range expands to the surrounding area;The negative sea surface height anomaly occurred in the tropical cyclone track region;A significant decrease in TCHP(Tropical Cyclone Heat Potential)occurred within the typhoon, while TCHP increased in areas far from the typhoon path;Sea surface salinity showed a decreasing trend and reached a minimum at the end of the rapid intensification;The alternating positive and negative velocity centers appeared near the center of the typhoon, spreading in an arc to the surrounding area and eventually dissipating. 【Conclusion】 The negative sea surface temperature and sea surface height anomaly can weaken the rapid intensification of tropical cyclones;The negative TCHP anomaly due to the rapid intensification of tropical cyclones also can inhibit the typhoon intensification process;The decline rates of TCHP in the inner and outer seas near the typhoon are not consistent before and after the rapid intensification of the typhoon. The decline rate of TCHP in the outer seas before the rapid intensification is faster than that in the inner seas;Decline in sea surface salinity results from heavy rainfall and strong winds from typhoons. The decline rate of TCHP in the inner seas reaches the maximum during the rapid intensification, which corresponds well with the sea surface temperature, salinity and sea surface wind field.