摘要
为探明海岛型城市的污染成因,采用MM5/CALPUFF模型定量测算区域传输对舟山群岛大气环境的影响.结果显示,舟山在冬季主要受西北方向大陆上空高浓度污染物传输影响,上海对其外来影响最大,SO2和NO2的贡献率在71%～79%和72%～83%之间;而在夏季受偏南气流影响,浙江省对其影响最大,SO2和NO2贡献率在52%～63%和49%～55%之间.舟山群岛在高频率、高风速的持续性西北风和偏北风作用下,易形成重污染天气,各监测点NO2最大小时浓度在122～194μg/m3之间,区域传输的贡献率在98%以上.开展区域联防联控工作,才能根本改善舟山群岛环境空气质量.
To investigate the pollution formation and causes of island city, the MM5/CALPUFF modeling system was applied to quantificationally calculate the effects of air transportation on air quality in Zhoushan islands. The results show that Shanghai had the biggest contribution for the air pollution in Zhoushan which mainly due to the transmission of pollutants in upper northwest atmosphere in winter, with SO2 71%～79% and NO2 72%～83%; and Zhejiang had dramatical influence on the condition of south wind, with SO2 52%～63% and NO2 49%～55% in summer, respectively. Heavy air pollutions were continually emerged, which considered relevant weather conditions such as frequent and high-speed northwest or northerly wind, the highest concentration of all monitoring sites were 122～194 μg/m3per hour and 98% of contribution from regional transportation. A suggestion was presented that air quality improvement in Zhoushan islands should be jointed prevention and control with other cities.
出处
《中国环境科学》
EI
CAS
CSCD
北大核心
2014年第6期1410-1419,共10页
China Environmental Science
基金
环保公益性行业科研专项(201209043-02)
