Based on Pydda inversion algorithm,cubic interpolation method and typical correlation analysis method,the wind field data are fused from Doppler radial velocity inversion wind field,ERA5-Land reanalysis wind field and automatic station wind field,and the characteristics of the fused wind field before and after the landfall of the super Typhoon"Lekima"(1909)are analyzed.The results show that the fused wind field with unique advantage of each wind source overcomes the deficiency of the lack of observational data at high altitudes,which performs well both for the large wind speed areas in the low-level atmosphere and the north-dipping vertical structure of the super Typhoon"Lekima"(1909).The fusion wind field can provide some indications of the windy area on the ground at the next time step through analyzing the low-level wind field at current time step,and further predict approximate extent of heavy precipitation after combining the topography information which can be used to identify the impacting areas of wind and rain disasters.
关键词
多源数据/风场反演/风场融合/台风风场/风速识别
Key words
multi-source data/wind field inversion/wind field fusion/typhoon wind field/wind speed identification
维普
万方数据