2017年通辽市一次重度霾天气过程气象特征分析  

Analysis of the meteorological characteristics of a heavy haze weather process in Tongliao City in 2017

作　　者：万宇 Wan Yu(Tongliao Meteorological Bureau,Tongliao 028000)

机构地区：[1]通辽市气象台,通辽028000

出　　处：《气象水文海洋仪器》2024年第3期10-12,18,共4页Meteorological,Hydrological and Marine Instruments

基　　金：通辽市科技项目“基于序列重建的通辽市大范围持续性霾过程气象条件分析”(201706)资助。

摘　　要：为了提高气象服务工作水平,综合分析2017-11-06-2017-11-07通辽地区重度霾天气的气象资料及PM_(2.5)浓度资料,结果表明:此次霾过程期间,高空无明显冷空气,地面为弱气压场,大气层结稳定、风速小、逆温频率高且强度大;同时,污染物的排放量增加,大兴安岭的阻挡及高浓度PM_(2.5)的消光作用,造成此次重度霾天气过程的发生。研究结果为提高通辽市霾天气的防范能力提供支持。In order to improve the level of meteorological services,a comprehensive analysis was conducted on the meteorological data and PM_(2.5)concentration data of heavy haze weather in the Tongliao area from November 6th,2017 to November 7th,2017.The results show that during this haze process,there was no obvious cold air in the high altitude,and the ground was a weak atmospheric pressure field.The atmospheric structure was stable,the wind speed was low,the inversion frequency was high,and the intensity was high.At the same time,the increase in pollutant emissions,the obstruction of the Greater Khingan Mountains,and the extinction effect of high concentrations of PM_(2.5)have caused the occurrence of this severe haze weather process.The research results provide support for improving the prevention ability of haze weather in Tongliao City.

关 键 词：霾 重污染 气象条件 污染物输送 

分 类 号：X513[环境科学与工程—环境工程]