一次区域性强雷暴对黔中城市群地面高浓度臭氧的影响分析

The influence of a regional severe thunderstorm on the highconcentration of ground ozone in the cities of central Guizhou Province

在强对流天气下,区域性强雷暴闪电会产生臭氧,而在近期贵州省城市臭氧调查研究中发现,城市夜间臭氧浓度的上升(无光化学机制贡献及人为排放干扰)以及区域性高浓度臭氧的出现通常都与区域性强雷暴闪电存在时空关联。本文对贵州省2020年3月黔中城市群的8个环境空气质量自动监测站的监测数据进行了统计分析,并结合ADTD闪电定位系统探测到的贵州及周边省市的雷电资料,初步探明了2020年3月22日出现在贵州省黔中地区的一次区域性臭氧污染个例的污染过程及成因。

Under strong convective weather,regional strong thunderstorms and lightning will produce ozone.Recent survey in Guizhou Province found that the increase of ozone concentration at night in the city(without the contribution of photochemical mechanism and human emission interference)and the regional high concentration of ozone are usually in time and space related to the regional strong thunderstorms and lightning.This paper analyzes the monitoring data of 8 automatic ambient air quality monitoring stations in the cities of Guizhou in March 2020,combines the lightning data of Guizhou and surrounding provinces and cities detected by the ADTD lightning positioning system,and make preliminary findings on the pollution process and causes of a case of regional ozone pollution in a central area of Guizhou Province on March 22,2020.