摘要
应用NCEP/NCAR和ERA5再分析资料,对2022年9—11月全球天气以及典型热带气旋暴雨分布特征进行分析,结果表明:副热带高压强度显著偏强,极涡位置、形状和强度逐月变化明显。北半球秋季中前期(9月—10月中旬),东亚东南部和北美洲中西部等地呈现罕见的大范围持续性高温少雨天气,欧洲多地最高气温创下了10月的历史纪录。11月北半球冷空气势力总体偏强,亚洲北部、北美洲大部分地区的最低气温较常年同期偏低,中亚东部、东亚以及西伯利亚等地出现极端寒潮天气。在陆地上,西半球大部分地区降水量较常年同期偏少,而东半球大部分地区降水量接近常年同期或略偏多。全球共有35个热带气旋生成,较常年同期平均偏多5个,其中北半球登陆的热带气旋达到17个。
This study uses NCEP/NCAR and ERA5 reanalysis data to analyze the distribution characteristics of global weather and typical tropical cyclone rainstorms from September to November 2022.The results show that the intensity of the subtropical high was unusually strong,and the position,shape,and intensity of the polar vortex varied significantly on a monthly basis.During early to mid-autumn in the Northern Hemisphere(September to mid-October),southeastern East Asia and western North America experienced widespread,sustained high temperatures with little rainfall,which was historically rare.Additionally,in October,the maximum temperature in many areas of Europe exceeded historical records.In November,strong cold air swept through the Northern Hemisphere,with minimum temperatures in northern Asia and most of North America dropping below the historical average for the same period.Extreme cold wave events occurred in the eastern parts of Central Asia,East Asia,and Siberia.Regarding precipitation,most areas of the Western Hemisphere saw rainfall below the normal levels for this time of year,while most areas in the Eastern Hemisphere had near-normal or slightly above-normal precipitation.A total of 35 tropical cyclones were generated globally,which is five more than the average for this period.Of these,17 tropical cyclones made landfall in the Northern Hemisphere.
作者
刘晓波
马杰
杨舒楠
王皘
LIU Xiaobo;MA Jie;YANG Shunan;WANG Qian(National Meteorological Center,Beijing 100081,China)
出处
《沙漠与绿洲气象》
2025年第1期77-87,共11页
Desert and Oasis Meteorology
基金
联合基金项目(U2142207)
气象能力提升联合研究专项(22NLTSZ002)
创新发展专项(CXFZ2023J010)。
关键词
大气环流
极涡
热带气旋
高温
暴雨
atmospheric circulation
polar vortex
tropical cyclone
high temperature
rainstorm
