海洋气象学报2025，Vol.45Issue(1)：104-114,11.DOI:10.19513/j.cnki.hyqxxb.20250102002
2024年秋季海洋天气评述
Autumn 2024 marine weather review
摘要
Abstract
In the Northern Hemisphere,the main atmospheric circulation in the autumn(from September to November)of 2024 is characterized by a dipole type of polar vortex and 5-wave circulation in the middle and high latitudes.In Eurasia,the circulation pattern of the westerly wind belt is flat without significant ridges and troughs.The troughs and ridges system are weaker than the historical average,and the cold air activities affecting China are not strong.There are 14 gale events above Beaufort wind force scale 8 over offshore areas of China,including 4 produced merely by tropical cyclones,7 jointly by cold air and tropical cyclones,two jointly by cold air and extratropical cyclones and one merely by cold air.The influence of cold air is weak.A total of 15 typhoons are generated in western North Pacific and the South China Sea,3.6 more than the multi-year(from 1949 to 2022)average.In addition,22 tropical cyclones are named in the world's other oceans,and in comparison with the historical average,there are 5.3 more in the North Atlantic,2.0 fewer in the Northeast Pacific,0.4 more in the North Indian Ocean and 0.5 fewer in the Southern Hemisphere.There are 18 rough sea wave events with wave height higher than 2.0 m over offshore areas of China,and the number of rough sea wave days accounts for about 84％of the total number of days in this autumn.The sea surface temperature(SST)over offshore areas of China is higher than the historical average,the maximum SST anomaly occurs in the Yellow Sea and the north of the East China Sea in September,4.0℃higher than the historical average,and the minimum SST anomaly occurs in the north of Bohai Sea in October,0.5-2.0 ℃ lower than the historical average.关键词
大气环流/大风/浪高/海面温度/热带气旋Key words
atmospheric circulation/gale/wave height/sea surface temperature/tropical cyclone分类
海洋科学引用本文复制引用
郭乙莹,张增海,刘涛,曹越男,万纬祺,张浩,张成宝..2024年秋季海洋天气评述[J].海洋气象学报,2025,45(1):104-114,11.基金项目
国家重点研发计划项目(2022YFC3004200) （2022YFC3004200）
