Impact of the Second Landfall Fujian Typhoon on the Precipitation in Taizhou
By using the CMA-STI best track data,precipitation data from medium-scale automatic meteorological stations in Taizhou and the ERA5 reanalysis data,the precipitation in Taizhou of the first landing in Taiwan and the second landing in Fujian typhoons was analyzed.According to the precipitation in Taizhou,the typhoons were divided into three categories:heavy precipitation type,moderate precipitation type,and weak precipitation type.The distribution patterns of precipitation of different types were relatively consistent,but the magnitudes were significantly different.Comparing the characteristics of the three types,found that the heavy precipitation typhoons were first,that the average intensity of landing on Taiwan was the strongest,the average intensity loss across Taiwan Island was the largest,and the average intensity of the second landing on Fujian was the strongest.Under the influence of typhoon circulation,there was strong warm advection along the coast,the east or southeast wind jet lasting more than 48 hours and larger than 25 m/s in Taizhou with the deep water vapor conditions from bottom layer to 200 hPa,the low-level convergence and the middle or high level dispersion conditions,the strong vertical upward movement conditions in the middle layer,and the strong water vapor flux convergence center in the lower layer,that would produce strong precipitation.In addition,the topography had an increasing effect on precipitation,and the precipitation in the mountainous areas of Taizhou under the heavy precipitation type was 1.5-3.0 times that of the plain area.
second landfallFujianstrength lossTaizhouprecipitation
NETL
NSTL
万方数据
维普
