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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Li, Z., Xiangde, X., Guoan, D. et al. Diurnal variations of air pollution and atmospheric boundary layer structure in Beijing during winter 2000/2001. Adv. Atmos. Sci. 22, 126–132 (2005). https://doi.org/10.1007/BF02930876
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DOI: https://doi.org/10.1007/BF02930876