| Diurnal Variations of Air Pollution and Atmospheric Boundary Layer Structure in Beijing During Winter 2000／2001 |
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| 作者姓名： | ZHOU Li XU Xiangde DING Guoan ZHOU Mingyu CHENG Xinghong |
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| 作者单位： | [1]ChineseAcademyofMeteorologicalScience,Beijing100081／NanjingInstituteofMeteorology,Nanjing210044 [2]ChineseAcademyofMeteorologicalScience,Beijing100081 [3]NationalMarineEnvironmentalForecastingCenter,Beijing100081 |
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| 基金项目： | G1999045700) |
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| 摘 要： | The diurnal variations of gaseous pollutants and the dynamical and thermodynamic structures of the atmospheric boundary layer (ABE) in the Beijing area from January to March 2001 are analyzed in this study using data from the Beijing City Air Pollution Observation Field Experiment (BECAPEX). A heavy pollution day (22 February) and a good air quality day (24 February) are selected and individually analyzed and compared to reveal the relationships between gaseous pollutants and the diurnal variations of the ABL. The results show that gaseous pollutant concentrations exhibit a double-peak-double-valley-type diurnal variation and have similar trends but with different magnitudes at different sites in Beijing. The diurnal variation of the gaseous pollutant concentrations is closely related to (with a 1-2 hour delay of) changes in the atmospheric stability and the mean kinetic energy in the ABL.
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| 关 键 词： | 北京 大气污染 昼夜变化 边界层 热力结构 |
| 收稿时间： | 22 January 2008 |
Diurnal variations of air pollution and atmospheric boundary layer structure in Beijing during winter 2000/2001 |
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| ZHOU Li,XU Xiangde,DING Guoan,ZHOU Mingyu,CHENG Xinghong.Diurnal variations of air pollution and atmospheric boundary layer structure in Beijing during winter 2000/2001[J].Advances in Atmospheric Sciences,2005,22(1):126-132. |
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| Authors: | Zhou Li Xu Xiangde Ding Guoan Zhou Mingyu Cheng Xinghong |
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| Institution: | Chinese Academy of Meteorological Science, Beijing 100081;Nanjing Institute of Meteorology, Nanjing 210044,Chinese Academy of Meteorological Science, Beijing 100081,Chinese Academy of Meteorological Science, Beijing 100081,National Marine Environmental Forecasting Center, Beijing 100081,Chinese Academy of Meteorological Science, Beijing 100081 |
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| Abstract: | The diurnal variations of gaseous pollutants and the dynamical and thermodynamic structures of the atmospheric boundary layer (ABL) in the Beijing area from January to March 2001 are analyzed in this study using data from the Beijing City Air Pollution Observation Field Experiment (BECAPEX). A heavy pollution day (22 February) and a good air quality day (24 February) are selected and individually analyzed and compared to reveal the relationships between gaseous pollutants and the diurnal variations of the ABL. The results show that gaseous pollutant concentrations exhibit a double-peak-double-valley-type diurnal variation and have similar trends but with different magnitudes at different sites in Beijing. The diurnal variation of the gaseous pollutant concentrations is closely related to (with a 1-2 hour delay of)changes in the atmospheric stability and the mean kinetic energy in the ABL. |
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| Keywords: | Beijing air pollutant diurnal variation atmospheric boundary layer |
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