Abstract：A haze event in Nanjing during October 2012 was intensively measured with micro pulse lidar (MPL). By combining the MPL-measurements with the observations of meteorology, PM10 and PM2.5, we analyzed the variations of PM-concentrations, meteorological elements, vertical aerosol profiles with the optical property and mixing layer height (MLH) and their relations. The differences of extinction coefficients and MLH between the haze event and the non-haze period of November 11-12, 2012 were also comapared. The analysis show that the diurnal changes of PM-concentrations and extinction coefficients were in the relatively similar pattern with the high values in night and the low values in afternoon during the haze event. The peak of MLH lagged 2hours behind the peak of air temperature. There was a negative correlation between MLH and PM2.5 during the haze event, correlation coefficient was -0.57. Compared to the non-haze period, the MLH was much lower during the haze event and most of the extinction coefficients exceeded 1.0km-1, which was much higher than the extinction coefficients from 0.1 to 0.25 km-1during the non-haze period.
严国梁, 韩永翔, 张祥志, 汤莉莉, 赵天良, 王瑾. 南京地区一次灰霾天气的微脉冲激光雷达观测分析[J]. 中国环境科学, 2014, 34(7): 1667-1672.
YAN Guo-Liang, HAN Yong-Xiang, ZHANG Xiang-Zhi, TANG Li-Li, ZHAO Tian-Liang, WANG Jin. Analysis of a haze event in Nanjing with micro-pulse lidar measurements. CHINA ENVIRONMENTAL SCIENCECE, 2014, 34(7): 1667-1672.
