沈阳冬季一次颗粒物污染过程的气象条件研究  

Analysis of Meteorological Conditions of a Particulate Matter Pollution Process during Winter in Shenyang

作　　者：李典[1,2] 崔景琳 班伟龙 侯婉婷 鲁杨 Li Dian;Cui Jinglin;Ban Weilong;Hou Wanting;Lu Yang(Shenyang Meteorological Bureau of Liaoning Province,Shenyang 110168,China;The Institute of Atmospheric Environment,China Meteorological Administration,Shenyang 110166,China)

机构地区：[1]沈阳市气象局,辽宁沈阳110168 [2]中国气象局大气环境研究所,辽宁沈阳110166

出　　处：《环境科学与管理》2023年第9期38-41,70,共5页Environmental Science and Management

基　　金：中国气象局沈阳大气环境研究所开放基金(2018 SYIAE04)。

摘　　要：利用常规气象观测资料、大气污染物监测资料、ERA-Interim气候再分析数据和风廓线雷达资料,对沈阳2017年11月1-3日污染过程的气象要素变化、天气形势和污染物传输路径等特征进行分析。结果表明:此次过程高低空均受偏西气流影响,有利于大气增湿。地面为弱气压场,且逆温层长时间维持,为污染天气形成提供有利的环流形势。混合层高度在1000 hPa上下,大气环境容量小,有利于污染物浓度增长。过程期间,污染物浓度出现两个峰值,但峰值前的气象要素特征和峰值时的污染物输送路径均不同。Based on the data from conventional observation data,atmospheric pollutant monitoring data,ERA-Interim climate reanalysis data and wind profiler radar data,the pollution process in Shenyang from November 1st to 3st in 2017 were analyzed from the characteristic of the meteorological element changes,the atmospheric circulation and external transport.The results show that the upper and lower levels are westerly airflow,which is conducive to atmospheric humidification.Equalizing field and maintain a long temperature inversion layer are conducive to generation of pollutants.In addition,the height of the mixing layer is about 1,000 hPa and the atmospheric environment capacity is small.There are two peaks in pollutant concentration.The characteristics of meteorological elements and the transport paths are different.

关 键 词：污染天气 气象条件 逆温层 

分 类 号：X513[环境科学与工程—环境工程]