东北典型沿海城市臭氧区域传输贡献研究——以丹东市为例

Study on the Regional Ozone Transmission Contribution of the Typical Coastal City in Northeast China--Taking Dandong City as an Example

选取丹东市作为东北典型沿海城市,基于后向轨迹模型,通过后向轨迹聚类分析、污染物潜在源贡献因子分析、污染物浓度权重分析,定性和定量模拟了丹东市O_(3)高浓度时段的气团来源及不同区域对丹东市臭氧传输贡献结果。模拟结果表明:山东东北部及东部海域、江苏东部海域、辽宁中北部及南部地区的区域输送对丹东市O_(3)浓度贡献较大。

Dandong city is selected as a typical coastal city in northeast China,based on the backward trajectory model,through backward trajectory clustering analysis,pollutant potential source contribution factor analysis and concentration-weighted trajectory analysis.The air mass source and contribution results of different regions to ozone transmission in Dandong city during the period of high ozone concentration are qualitatively and quantitatively simulated.The simulation results show that the regional transport in the northeast and east sea of Shandong province,east sea of Jiangsu province,north central and south regions of Liaoning province contribute greatly to the ozone concentration of Dandong city.