2018年3月中旬福建一次暴雨过程分析及服务措施

Process Analysis and Service Measures of a Rainstorm in Fujian in Mid-March 2018

本文选用福建省常规气象观测资料、地面观测资料等,着重从暴雨实况、天气形势、物理量诊断等角度重点分析了2018年3月19-20日发生在福建省的一次大范围暴雨天气过程,结果表明:持续的水汽输送、不稳定能量、低层切变的辐合上升运动等有利于暴雨天气过程的产生与发展;对流层上层辐散,下层辐合的高低空配置有利于上升运动的增强,进而导致降水强度有所增强;上干下湿的对流不稳定条件为不稳定能量的释放创造了有利条件,最终引发暴雨过程。基于此,又提出几点气象服务措施,仅供参考。

In this paper,conventional meteorological observation data and ground observation data of Fujian province were se⁃lected to analyze the process of a large-scale rainstorm that occurred in Fujian province on March 19-20,2018 from the per⁃spectives of actual rainstorm,weather situation,physical quantity diagnosis,etc.The results show that continuous water vapor transport,unstable energy,convergence and rising motion of low-level shear are beneficial to the generation and development of rainstorm weather process.Based on this,some meteorological service measures are put forward for reference only.