Based on the three-dimensional variation method,we investigated the effects of water vapor flux from land surface in the initial condition on the precipitation simulation during the landfall of typhoon"Lionrock",by assimilating dense in-situ ground data and X-band radar data.The results showed that the assimilating dense in-situ ground data could evidently improve the thermodynamic field in the boundary layer of the environment at the initial condition,improve precipitation simulation in the coastal region by weakening the thermal difference between land and ocean,and weaken water vapor flux in the boundary layer from northeast in land region to the landfalling typhoon.Assimilating X-band radar data could improve precipitation simulation by enhancing the water vapor flux in the boundary layer within the radar detection range in the initial condition.
关键词
登陆台风/水汽通量/加密地面资料/X波段雷达观测/资料同化
Key words
landfall typhoon/water vapor flux/dense ground data/X band radar data/data assimilation
维普
万方数据