摘要
大连市酸雨的来源受外来地区输送的影响较大, 利用CMAQ模型对大连市酸性物质的沉降进行定量模拟分析.结果表明, 大连市本地源排放对空气质量的影响较大, 但对酸性物质的沉降影响较小, 对硫和氮的湿沉降的贡献仅在10%-20%之间.外来源中, 山东污染物排放对大连市湿沉降的贡献占30%-40%, 而辽宁其他区域的贡献仅10%左右.另外, 在雨季5-8月, 日本、朝鲜和韩国等境外污染物排放对大连市和周边地区湿沉降的贡献也不容忽视.
Acid rain in Dalian was significantly affected by external sources via transportation.Deposition of acidic material in Dalian was quantitatively simulated using CMAQ model in this article.The results showed that air quality of Dalian was mainly affected by emissions from local sources,while their influence on deposition of acidic material was small and only contributed to 10%~20%of wet deposition of sulfur and nitrogen.Among all external sources,emissions from Shandong were very important for wet deposition in Dalian(accounting for 30%~40%),while other regions in Liaoning only accounted for about 10%.Furthermore,in the rainy season(from May to August),effect of emission in neighbor countries(such as Japan,North Korea and South Korea) on wet deposition in Dalian and surrounding area should not be neglected.
出处
《中国环境管理干部学院学报》
CAS
2016年第3期51-55,共5页
Journal of Environmental Management College of China
关键词
酸雨
来源
CMAQ模型
模拟
湿沉降
acid rain
source
CMAQ model
simulation
wet deposition
