摘要
为探究抚顺市大气污染特征,该项研究应用气象模式WRF耦合空气质量模式CMAQ对抚顺市2016年大气细颗粒物的时空分布特征及主要来源进行分析。建立了抚顺市3×3 km网格化污染源清单,清单显示抚顺市的大气污染物排放以工业为主,SO_2、NO_x、TSP排放量分别达到2.14×10~4t、1.97×10~4t、3.29×10~4t,排放高值网格集中在市区内。数值模拟结果显示,抚顺市PM_(2.5)污染总体呈现"西高东低"的趋势,高值区出现在以新抚区、望花区、东洲区、顺城区为中心的城区地带。1月抚顺市的PM_(2.5)污染最重,高值区浓度在60μg/m^3以上。1月ρ(PM_(2.5))贡献最大的源为居民源(21.6%)与供暖源(20.7%);4月贡献最大的源为居民源(25.0%),钢铁源(16.5%)与移动源(11.7%)占比其次;7月钢铁源与移动源对抚顺市ρ(PM_(2.5))贡献分别为17.8%与15.1%;10~月居民源的贡献达到33.4%,远超过其它源类的贡献。
In this research,with the aims at investigating the air pollution characteristics in Fushun City,Weather Research and Forecasting Model(WRF)in combination with Congestion Mitigation and Air Quality Model(CMAQ)was used to analyze the spatial distribution characteristics and the main contributed pollutant sources of atmospheric fine particles in Fushun for the year of 2016.A 3 x3km grid list of the pollution sources in Fushun City was established,showing that the air pollutants emission was mainly from the industries.The emission amount of SO2,N0rc and TSP were 2.14 x104 tons,1.97 x 104 tons,and 3.29 x 104 tons respectively,with the high value grid concentrated in the urban areas.The numerical simulation results showed that spatial distribution of PM2.5 in the west area of Fushun was higher than that in the east area,and the high value areas appeared in the urban areas centered in Xinfu District,Wanghua District,Dongzhou District,and Shuncheng District.In January,the pollution of PM2.5 in Fushun was the heaviest and the concentration in the high value areas was above 60 pg/m3.The main contribution sources of PM2.5 in January were resident source(21.6%)and heating source(20.7%).In April,the main contribution sources of PM2.5 were resident source(25.0%),steel source(16.5%)and mobile source(11.7%)in a descending order.In July,steel source and mobile source contributed 17.8%and 15.1%respectively.In October,contribution of resident sources reached to 33.4%,far exceeding the contribution of other sources.
作者
秦思达
Qin Sida(Liaoning Academy of Environmental Sciences,Shenyang 110161,China)
出处
《环境保护科学》
CAS
2018年第3期80-84,109,共6页
Environmental Protection Science
基金
国家重点研发计划重点专项(2017YFC212500)
辽宁省中央引导地方科技发展专项
关键词
CMAQ
PM2.5
源解析
大气数值模拟
CMAQ
PM2 5
Source Apportionment
Atmospheric Numerical Simulation
作者简介
秦思达(1989-),男,硕士研究生、助理工程师。研究方向:大气环境科学。E-mail:qinsida46@163.com。
