摘要
2022年7月至12月,全球共生成55个热带气旋,其中北半球生成51个,较常年同期偏少0.5个;南半球生成4个,较常年同期偏少1.9个。西北太平洋热带气旋平均生成位置(20.6°N,136.5°E)较常年平均(16.1°N,136.3°E)偏北4.5个纬距。9月至10月,飓风“伊恩”重创美国、“罗斯林”严重影响墨西哥,台风“轩岚诺”、“梅花”、“南玛都”、“尼格”与“奥鹿”侵袭西北太平洋沿岸多国。西北太平洋9月至10月热带气旋多发,较常年偏多3.5个。9月至10月西北太平洋17°N~28°N、130°E~145°E附近大气低层受气旋式辐合环流控制,且气旋式辐合较常年偏强,海温较气候平均偏高0.5~1.0℃,为西北太平洋热带气旋多发创造了有利条件。
From July to December 2022,a total of 55 tropical cyclones were generated over the global oceans,of which 51 tropical cyclones were generated in the Northern Hemisphere(0.5 less than the climatology for the same period),and 4 were generated in the Southern Hemisphere(1.9 less than the climatology for the same period).The average generated position(20.6°N,136.5°E)of tropical cyclones is 4.5 latitudes northward from the climatology(16.1°N,136.3°E)over the western North Pacific.In September and October,hurricane IAN severely hit the United States,hurricane ROSLYN seriously affected Mexico.Typhoons HINNAMNOR,MUIFA,NANMADOL NORU,and NALGAE affected many countries along the coast of the western North Pacific.Besides,tropical cyclones frequently occurred in the western North Pacific,with 3.5 more than usual from September to October.The lower layers of the atmosphere near 17~28°N,130~145°E in the western North Pacific were controlled by cyclonic convergence circulation in September With a positive bias than usual and the SST was 0.5~1.0°C higher than the climatology,which created favorable conditions for the frequent occurrence of tropical cyclones in the western North Pacific.
作者
宋佳凝
王皘
钱奇峰
董林
史达伟
Song Jianing;Wang Qian;Qian Qifeng;Dong Lin;Shi Dawei(National Meteorological Center,Beijing 100081,China;Lianyungang Meteorological Bureau,Jiangsu Lianyungang 222006,China)
出处
《气象研究与应用》
2023年第2期1-7,共7页
Journal of Meteorological Research and Application
基金
国家自然科学基金项目“南海弱台风引发我国强降水的机理研究”(42175007)
国家重点研发计划项目“台风强度/结构变化的关键动力-热力过程及预报理论研究”(2017YFC1501604)
关键词
热带气旋
全球
高影响
西北太平洋
tropical cyclones
global
high-impact
western North Pacific
作者简介
宋佳凝,女,硕士,助理工程师,主要从事台风及海洋气象预报工作。E-mail:songjn@cma.gov.cn;通讯作者:王皘,女,硕士,高级工程师,主要从事台风及海洋气象预报工作。E-mail:qianwang@cma.gov.cn
