2020年10月21—22日济南一次沙尘天气过程分析

Analysis of A Sandstorm Weather Process in Jinan from October 21 to 22,2020

主要采取气象探测资料对2020年10月21—22日济南一次沙尘天气过程进行分析。结果表明:此次出现在济南的沙尘天气是由蒙古国中南部沙尘气溶胶持续南下造成的。此次沙尘天气发生的主要影响系统是冷锋,地面冷锋过境,源于蒙古国南部一带的沙尘不断朝着东部和南部发展,途经区域PM_(10)浓度值大幅升高。由后向轨迹模式进行分析获悉,此次沙尘天气期间传输通道以西北路为主,并且后向轨迹模拟不同高度的气团传输路径和实况天气形势大体上一致。

Used meteorological observation data to analyze a sandstorm weather process in Jinan from October 21 to 22,2020.The results indicated that the sandstorm weather in Jinan was caused by the continuous southward movement of sandstorms and aerosols in central and southern Mongolia.The main impact system of this sandstorm weather was the cold front,which passes through the ground.The sandstorms originating from the southern region of Mongolia continue to develop towards the east and south,and the PM_(10) concentration value in the route area increases significantly.According to the analysis of the backward trajectory model,the transmission channel during this sandstorm weather was mainly the Northwest Road,and the backward trajectory simulation of air mass transmission paths at different heights was generally consistent with the actual weather situation.