株洲市臭氧污染状况及相关气象因子分析

采用2013年1～12月空气质量自动监测数据对株洲市臭氧污染现状及相关气象因子进行分析。结果表明:监测期间全年臭氧日最大8 h平均浓度一级标准值达标率达到71.8%,全年超标率为1.6%,超标主要出现在季节变换时期。臭氧日最大8 h平均浓度的月均值变化呈"M"型,浓度高值持续时间长。日变化规律较强,且不同季节变化特征略有差别。臭氧浓度与气温有正相关性,相关系数为0.612;与湿度和云量有负相关性,且臭氧与湿度负相关性较明显,相关系数为0.731。

Analyzing Ozone Pollution Status and Related Weather Factors in Zhuzhou City

The monitoring data from Jan. to Dee. 2013 were analyzed to investigate the ozone pollution degree and its relative weather factors in Zhuzhou city. The results showed the A standard rate of daily maximum-8 hour mean concentration reached 71.8%, and over standard rate was only 1.6%. The exceeding standard mainly occurred in transitional period between seasons. The monthly change of ozone daily maximum-8 hour mean concentration was ＂M＂ type. Daily variation presented regularity, and showed slightly different variation in different seasons. Ozone concentration has positive correlation with temperature, and the correlation coefficient is 0.612. But it has negative correlation with humidity and cloud amount. The negative correlation of ozone and humidity is obvious, and the correlation coefficient is 0.731.