Global Weather and Tropical Cyclone Rainstorm Distribution Characteristics from September to November 2022
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.
国家科技期刊平台
NSTL
万方数据
