【作者】 姚青； 刘爱霞； 张小玲； 孙玫玲； 张长春； 韩素芹； 朱玉强；

【Author】 Yao Qing1,Liu Aixia1,Zhang Xiaoling2,Sun Meiling1,Zhang Changchun1,Han Suqin1,Zhu Yuqiang1(1.Tianjin Institute of Meteorology,Tianjin 300061;2.Institute of Urban Meteorology,China Meteorological Administration,Beijing 100089)

【机构】 天津市气象科学研究所； 中国气象局北京城市气象研究所；

【摘要】 利用2006年秋季天津市区近地面大气O3、NOX和气象因素等观测数据,研究了O3浓度的分布特征及时间变化规律,分析了O3与NO、NO2和NOX等前体物及气温、风速等气象条件的相关性,并对污染物之间的相互关系进行了拟合。结果表明,天津市区秋季O3和NOX污染基本控制在国家二级标准以内,观测期间各污染物浓度在一日内变化明显,O3浓度与气温、风速呈较好的正相关关系,NOX与NO、NOX与NO2均具有较好的线性关系。根据以上分析结果,可为今后开展光化学污染的潜势预报提供依据和预报思路。更多还原

【Abstract】 Based on the observational data of near surface O3,NO,NO2 and meteorological factors in the urban area of Tianjin during autumn 2006,the O3 concentrations and their temporal variation characteristics were studied.The correlation between O3 and its precursors(NO,NO2)and related meteorological factors(temperature,wind speed)was analyzed.The frequency of ozone concentration less than 200μg/m3 is 99.0 %.The ozone concentration has an obvious diurnal variation.The ozone concentration in the afternoon is higher than in the morning and in the evening.Air temperature and wind speed have significantly positive correlation with O3 concentration.Fitting analysis finds that the relation between NOX concentration and NO2 or NO ratio is linear.All these results will provide a physical basis for accurately predicting photochemical pollution in extensive,further research.更多还原