Measurements of ozone using ultraviolet differential absorption lidar in low troposphere

Ultraviolet differential absorption lidar (UV DIAL) is a powerful instrument for measuring O3 vertical distribution in the troposphere. Using self-manufactured AML-2, O3 concentration distribution in the low troposphere in southern suburb of Beijing was surveyed in November, 2009. Partial results were compared with those from a radiosonde balloon, and they show the same distribution trend. Experiment data during fine weather were selected and analyzed in detail. The results indicate that, O3 concentration decreases while the height increases in the low troposphere; the average O3 concentration has obvious diurnal variations from ground level 500 meters to 1.5 kilometers; the maximum appears at about 2 p.m. and is less than 410-8 with a maximum variance of 3.210-9.