| 杭州主城区O3与前体物浓度变化特征 |
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| 引用本文： | 洪盛茂,焦荔,何曦,孙鸿良,徐鸿,杨乐,何纪平.杭州主城区O3与前体物浓度变化特征[J].气候与环境研究,2009,14(6):657-664. |
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| 作者姓名： | 洪盛茂 焦荔 何曦 孙鸿良 徐鸿 杨乐 何纪平 |
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| 作者单位： | 杭州市环境监测中心站,杭州,310007 |
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| 基金项目： | 杭州市科技局重点项目20092113A05 |
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| 摘 要： | 利用2004～2006年杭州主城区环境空气监测资料,研究了O_3、NO_2和CO浓度的分布特征和时间变化规律,结果表明,杭州主城区3年的O_3、NO_2、CO的年均浓度都不大,分别为40、60、1400μg·m~(-3).四季中O_3、NO_2和CO浓度相差较大,O_3是夏季高冬季低,NO_2和CO则是秋季较高,夏季较低.O_3、NO_2和CO浓度日变化也很明显,其中O_3是单峰形态,NO_2和CO为双峰形态.不同天气条件下O_3与烃类的关系研究表明,晴天时烃类浓度减少,O_3浓度明显增加;阴天时O_3浓度较低,烃类浓度较高,它们的变化不大.白天和夜晚不同风速时O_3、C_2-C_(12)的浓度变化不同,白天风速增大时C_2-C_(12)浓度减小,O_3浓度增加;晚上无此变化.
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| 关 键 词： | 前体物 天气条件 |
Characteristics of O3 and Precursors Concentrations in Hangzhou Urban Areas |
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| HONG Shengmao,JIAO Li,HE Xi,SUN Hongliang,XU Hong,YANG Le and HE Jiping.Characteristics of O3 and Precursors Concentrations in Hangzhou Urban Areas[J].Climatic and Environmental Research,2009,14(6):657-664. |
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| Authors: | HONG Shengmao JIAO Li HE Xi SUN Hongliang XU Hong YANG Le and HE Jiping |
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| Abstract: | Based on the air monitoring data in Hangzhou urban areas from 2004 to 2006, the concentrations of O_3 , NO_2 , CO, and their temporal variation characteristics were analyzed.The results showed that all the annual mean concentrations of O_3 , NO_2, and CO were low in the three years, which were 40, 60, and 1400 μg · m~(-3) , respec-tively. The concentrations of O_3 , NO_2 , and CO were different among seasons, O_3 concentration was the highest in summer and the lowest in winter, while both NO_2 and CO concentrations were higher in winter and lower m summer. The diurnal variations of the concentrations of O_3 , NO_2 , and CO were obvious, the diurnal variations of O_3 concentrations showed one peak, while the others had two peaks.The relationship between O_3 and hydrocarbons concentration in different weather conditions showed that O_3 concentration increased significantly and hydrocarbons reduced during cloudless days, but during cloudy days O_3 concentration was lower and hydrocarbons concentrations were higher, and their concentrations changed little In the daytime and nighttime, O_3 and C_2-C_(12) hydrocarbons concentrations changed with different wind velocity. In the daytime, the C_2-C_(12) hydrocarbons concentrations reduced with the increase of wind speed, and O_3 was exactly opposite.The similar situation was not found in the nighttime. |
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| Keywords: | C_2-C_(12) precursor C_2- C_(12) hydrocarbons weather condition |
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