showed a trendP < 0.01
In addition, the aerosol extinction coefficients in the lower lidar layer showed a trend similar to the PM 2.5 concentration at Xiasha (R = 0.68, P < 0.01).
In addition, the aerosol extinction coefficients in the lower lidar layer showed a trend similar to the PM 2.5 concentration at Xiasha (R = 0.68, P < 0.01).
Then, within ~1000–1800 m, the O 3 concentrations generally exhibited a decreasing trend.