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| 冷锋天气大气边界层内臭氧及氮氧化物的观测研究 | |
| 引用本文： | 刘毅,刘小红,李家伦,洪钟祥. 冷锋天气大气边界层内臭氧及氮氧化物的观测研究[J]. 大气科学, 2000, 24(2): 165-172. DOI: 10.3878/j.issn.1006-9895.2000.02.04 |
| 作者姓名： | 刘毅 刘小红 李家伦 洪钟祥 |
| 作者单位： | 中国科学院大气物理研究所大气边界层物理和大气化学国家重点实验室,北京 10002 |
| 基金项目： | 中国科学院“百人计划”大气化学项目和中国科学院重大项目（KZ951-A1-403-02）资助 |
| 摘 要： | 利用北京325 m气象塔作为高空平台，于1997年10月观测到一次冷锋过程大气边界层内O3及NOx体积分数的变化，研究了O3及NOx体积分数与气象要素之间的关系，着重讨论了冷锋过境前后O3及NOx的体积分数变化及其与输送过程的关系。研究表明:北京大气边界层中下层存在明显的O3体积分数垂直梯度，O3的垂直输送与风速及温度梯度密切相关。冷锋过程有利于高层O3向低层输送，使O3体积分数垂直梯度明显减小，并使NOx体积分数显著降低。 |
| 关 键 词： | 臭氧 氮氧化物 大气边界层 冷锋过程 |
Measusements of O3 and NOx in Urban Atmospheric BoundaryLayer of Beijing during a Passage of Cold Front |
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| Liu Yi,Liu Xiaohong,Li Jialun and Hong Zhongxiang. Measusements of O3 and NOx in Urban Atmospheric BoundaryLayer of Beijing during a Passage of Cold Front[J]. Chinese Journal of Atmospheric Sciences, 2000, 24(2): 165-172. DOI: 10.3878/j.issn.1006-9895.2000.02.04 | |
| Authors: | Liu Yi Liu Xiaohong Li Jialun Hong Zhongxiang |
| Abstract: | Based on the Beijing 325 m meteorological tower, O 3 and NO x concentrations in urban atmospheric boundary layer were measured from October 22, 1997 to October 31, 1997 during a cold front passage The relations between O 3, NO x and meteorological parameters were studied, and the variations of O 3 and NO x during the passage of cold front were discussed Our results indicate that there is a downward O 3 flux in urban atmospheric boundary layer of Beijing, the vertical transportation of O 3 has a close relation with wind speed and the vertical temperature gradient During the passage of cold front, the vertical gradient of O 3 and NO x concentrations decreased remarkably |
| Keywords: | ozone nitrogen oxides cold front atmospheric boundary layer |
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