Relationship between NO2 Concentration and Meteorological Factors in the Urban Area of Wanzhou District

• 作者: Ma Huiyan Mao Xiaozhen Qian Ruozhi Xiang Yingchun Zhang Liying
• 来源期刊: 气象与环境研究：英文版
• 学科: 地球科学
• 关键词: 二氧化氮浓度 NO2 万州区 气象因子 市区 多元线性回归方程 多元线性回归模型 相对湿度
• 年，卷（期）: 2014,（3）
• 页码范围: 22-25
• 页数: 4页
• 分类号: P457

摘要

Firstly,the daily variations of NO2 concentration in the urban area of Wanzhou in 2012 were analyzed,and then the relationship between NO2 concentration and meteorological factors( precipitation,atmospheric pressure,wind speed,temperature,relative humidity and sunshine hours) was discussed. Finally,the multiple linear regression equation was established to predict NO2 concentration. The results showed that NO2 concentration in the urban area of Wanzhou did not exceed 80 μg /m3in most days from January 1 to December 31 in 2012. Among the six meteorological factors,NO2 concentration correlated significantly with three meteorological factors,that is,NO2 concentration correlated negatively with atmospheric pressure and wind speed but positively with relative humidity. NO2 concentration in the urban area of Wanzhou could be predicted using the multiple linear regression model. According to the rose diagram of wind directions,the wind blowing from the NNW was dominant in the urban area of Wanzhou.