成都市臭氧污染特征及气象成因研究
发布时间：2019-01-19 09:33
【摘要】：为研究成都市臭氧(O3)污染特征及其气象成因,对2014—2016年成都市6个国控环境监测站和同期气象台站逐小时地面观测数据进行了研究分析.结果表明:近4年来成都市O3污染日趋严重,O3年均浓度不断上升,较2013年升高51.2μg·m-3.O3浓度存在明显的季节变化特征:春、夏季较高,秋、冬季则较低,且各季节O3浓度变化具有很强的长期持续性特征.O3浓度日变化特征呈明显的单峰型分布,8:00出现最低值,15:00—16:00出现峰值,超标时段主要出现在13:00—17:00.O3浓度变化与紫外辐射、气温呈正相关关系,与相对湿度、风速呈负相关关系,且当紫外辐射大于12 MJ·m-2、气温高于15℃、相对湿度低于65%、西风或偏东北风控制时,成都市容易发生高浓度O3污染.
[Abstract]:In order to study the characteristics of ozone (O3) pollution and its meteorological causes in Chengdu, the hourly ground observation data of 6 state-controlled environmental monitoring stations and meteorological stations in Chengdu from 2014 to 2016 were studied and analyzed. The results show that O 3 pollution in Chengdu is becoming more and more serious in the past four years, and the average annual concentration of O 3 is increasing continuously. The increase of 51.2 渭 g m-3.O3 concentration in spring, summer, autumn and winter is obvious seasonal variation characteristics, which are higher in spring, higher in summer, lower in autumn and lower in winter. The diurnal variation of O _ 3 concentration showed an obvious single-peak distribution, the lowest value appeared at 8:00, and the peak value appeared at 15: 00-1600, and the variation of O _ 3 concentration in each season had a strong long-term persistence, and the diurnal variation of O _ 3 concentration showed an obvious single-peak distribution. The 13:00-17:00.O3 concentration change was positively correlated with ultraviolet radiation and air temperature, and negatively correlated with relative humidity and wind speed. When UV radiation was more than 12 MJ m-2, the temperature was higher than 15 鈩，
本文编号：2411235
[Abstract]:In order to study the characteristics of ozone (O3) pollution and its meteorological causes in Chengdu, the hourly ground observation data of 6 state-controlled environmental monitoring stations and meteorological stations in Chengdu from 2014 to 2016 were studied and analyzed. The results show that O 3 pollution in Chengdu is becoming more and more serious in the past four years, and the average annual concentration of O 3 is increasing continuously. The increase of 51.2 渭 g m-3.O3 concentration in spring, summer, autumn and winter is obvious seasonal variation characteristics, which are higher in spring, higher in summer, lower in autumn and lower in winter. The diurnal variation of O _ 3 concentration showed an obvious single-peak distribution, the lowest value appeared at 8:00, and the peak value appeared at 15: 00-1600, and the variation of O _ 3 concentration in each season had a strong long-term persistence, and the diurnal variation of O _ 3 concentration showed an obvious single-peak distribution. The 13:00-17:00.O3 concentration change was positively correlated with ultraviolet radiation and air temperature, and negatively correlated with relative humidity and wind speed. When UV radiation was more than 12 MJ m-2, the temperature was higher than 15 鈩，
本文编号：2411235
本文链接：https://www.wllwen.com/shengtaihuanjingbaohulunwen/2411235.html
