摘要
应用中尺度气象模式(MM5)与区域多尺度空气质量模型(CAMx)的耦合模型系统,模拟研究了2005年采暖期间近北京地区电厂源排放对北京市空气质量的影响;采用SO2贡献来源识别技术筛选了对北京市空气质量影响大的区域电厂源.结果表明:近北京地区电厂源对北京市ρ(SO2)的影响从南到北呈递减趋势,其对北京城区、北京全市ρ(SO2)月均贡献值分别为6.97和6.40μg/m3;影响北京城区ρ(SO2)的电厂排放源主要来自张家口、唐山、天津、石家庄、廊坊和衡水等地区,占ρ(SO2)总贡献值的83.2%;为缓解北京采暖期间SO2污染压力,应首先控制和削减张家口、天津、唐山、石家庄地区SO2排放量大的电厂源.
An integrated MM5-CAMx modeling system was applied to study the effects of regional power plant emissions on the SO2 air quality in Beijing during the heating season. The SO2 source apportionment technology was used to investigate the influence of these regions on air quality in Beijing. Results indicated that SO2 concentration in Beijing decreased from south to north, and the monthly concentrations were 6.97 and 6.40μg/m^3 for the urban only and entire area of Beijing, respectively. The SO2 source apportionment study showed that regional power plant emissions from Zhangjiakou, Tangshan, Tianjin, Shijiazhuang, Langfang and Hengshui account for 83.2% of the SO2 contribution in urban Beijing. Comprehensive analysis indicated that for the purpose of mitigating air pollution and improving air quality in Beijing, it is critical to control and reduce power plant emissions in Zhangjiakou, Tianjin, Tangshan and Shijiazhuang, which had greater emission amounts and higher contributions.
出处
《环境科学研究》
EI
CAS
CSCD
北大核心
2009年第5期567-573,共7页
Research of Environmental Sciences
基金
国家重点基础研究发展计划(973)项目(2005CB724201)
国家自然科学基金项目(50878006)
关键词
电厂
大气污染
数值模拟
二氧化硫
power plant
air pollution
numerical simulation
sulfur dioxide
