- Joint application of multiple remote sensing equipment on the study of the relationship between regional air quality change and boundary layer structure
- Abstract：For the study on the relationship between regional air quality change and boundary layer structure, three months of simultaneously atmospheric boundary layer structure observation experiments were carried out in 3 sites of Foshan area using wind profile radar, laser radar, and microwave radiometer from October to December,2015. It was found that,the wind profile radar detection can continuously provide high vertical resolution wind observations, and from the vertical distribution of the derived average wind field,obvious vertical stratification structure of the wind field is observed in Foshan area; air pollution has a strong correlation with the thickness of the lower weak wind layer. The laser radar can detect the continuous variation of the vertical distribution of the extinction properties of particles. The extinction characteristics of particulate matter in Foshan area are closely related to the structure of atmospheric boundary layer, and the change of air quality index (AQI) is highly correlated with the retrieved boundary layer height, with a correlation coefficient of -0.58. The microwave radiometer can continuously detect the vertical distribution of temperature and relative humidity, and thus the statistic evolution the vertical structure of temperature and relative humidity can be obtained. The air pollution has a high correlation with the diurnal variation of the boundary layer inversion and relative humidity. Through the joint detection by multiple devices, the vertical distribution characteristics of the mean wind field, the evolution of the particle concentration, and the characteristics of the temperature inversion and the relative humidity distribution can be obtained simultaneously. Multi-equipment joint detection has an important role on the mechanism study of the relationship between regional air quality change and boundary layer structure, and also very useful for the regional air quality forecast study.