海洋气象学报2025，Vol.45Issue(1)：79-89,11.DOI:10.19513/j.cnki.hyqxxb.20240107001
1953-2022年南海地区强热带气旋破坏力的时空分布特征和成因
Spatio-temporal distribution characteristics and causes of STCs'destructive forces in the South China Sea from 1953 to 2022
摘要
Abstract
To understand the spatio-temporal distribution characteristics of the destructive forces of the severe tropical cyclones(STCs;tropical cyclones with intensities equal to or higher than typhoon)to various targets in the South China Sea(SCS;105°-120° E,3°-25°N),the China Meteorological Administration(CMA)Tropical Cyclone Best Track Dataset is used to calculate the power dissipation indices(PDIs)of the tropical cyclones reaching the level of STC.Thereafter,the PDIs are assigned to different spatial locations to analyze the spatio-temporal distribution characteristics of the STCs'destructive forces in the SCS from 1953 to 2022.The results are listed below.(1)The STCs'destructive forces in the SCS exhibit high values in the northeastern part and low values in the southwestern and southern parts.That is,the waters around the Dongsha Islands(116°-120°E,17°-21°N)have the highest PDI,and as it is far away from the Dongsha Islands,the PDI decreases towards the west and the south.(2)The spatial extent of high-destructive-force areas first expands,then narrows,and expands again over the time.(3)The temporal variation of the STCs'destructive forces at different latitudes shows an increasing-decreasing-increasing trend,while the forces in different periods first increase and then decrease from north to south.Moreover,the centroids of the PDIs are generally seen moving southward.Further analysis indicates that the changes in the numbers and duration of the STCs,which are produced in the western Pacific and then enter the SCS,are the most important factor for the spatio-temporal variations of the STCs'destructive forces in the SCS.关键词
南海/台风/能量耗散指数(PDI)/破坏力/时空分布Key words
the South China Sea/typhoon/power dissipation index(PDI)/destructive force/spatio-temporal distribution分类
海洋科学引用本文复制引用
覃梦云,王子权,黄荣永,余克服..1953-2022年南海地区强热带气旋破坏力的时空分布特征和成因[J].海洋气象学报,2025,45(1):79-89,11.基金项目
国家自然科学基金项目(42090041) （42090041）
海南省科技专项(ZDYF2024SHFZ086) （ZDYF2024SHFZ086）
广西自然科学基金项目(2020GXNSFAA297245) （2020GXNSFAA297245）
广西南海珊瑚礁研究重点实验室自主课题项目(GXLSCRSCS2021102) （GXLSCRSCS2021102）
