台风“玲玲”对黑龙江暴雨影响分析

选取2019年9月7-8日NCEP/NCAR(1°×1°)再分析资料,分析了降水实况、卫星云图、环流形势、物理量场。结果表明:此次暴雨过程主要受台风登陆后减弱的热带风暴影响,副热带高压的维持为水汽的输送与台风的北进起到了促进作用,台风外围水汽成为此次降水的主要水汽来源,高低空急流耦合加强了动力条件,暴雨落区与高空急流的右侧、低空急流的左侧、垂直运动强上升区及水汽通量散度辐合区有较高的吻合度。

Analysis of the influence of typhoon"Lingling"on rainstorm in Heilongjiang province

The NCEP/NCAR (1°×1°) reanalysis data from September 7 to 8, 2019 are selected to analyze the actual precipitation, satellite cloud map, circulation situation and physical quantity field. The results show that the storm process was mainly affected by the weakened tropical storm after the typhoon landed. The maintenance of the subtropical high pressure promoted the transport of water vapor and the northward advance of the typhoon,The water vapor around the typhoon became the main water vapor source of this precipitation, and the coupling of high and low level jet strengthened the dynamic conditions, there is a good agreement between the rainfall area and the right side of the upper jet, the left side of the lower jet, the strong ascending area of vertical motion and the supplementary area of water vapor flux dispersion.