摘要
利用逐小时的气溶胶、探空、ERA5气象数据,分析了2020年年底济南地区3次严重霾污染天气过程,结果表明:2020年年底的3次霾污染过程中AQI的变化趋势与PM_(2.5)、PM_(10)和NO_(2)基本一致,说明PM和NO_(2)是造成济南地区冬季霾污染天气的主要污染物,而CO、SO_(2)和O_(3)不是济南地区霾污染天气的主要污染物,其中PM与O_(3)呈明显的错峰趋势;1000 hPa风场特征:a过程,在12月8日前后,济南地区受高压反气旋影响,风力微弱以晴好天气为主,不利于污染物的沉降和扩散,11日开始受西北冷空气影响,雾霾过程结束。b过程,12月26日前后济南地区受东南暖湿气流影响,到27日达到最强,然后减弱,使得这次短暂的霾污染过程减弱。c过程,1月20日前后济南地区受东南暖湿气流影响,23日开始减弱,使得AQI下降,然后在27日受东北风影响,此次长达8 d的霾污染天气结束。济南地区几次霾污染过程均出现逆温层,贴地逆温和脱地逆温均影响了霾的形成。
Based on hourly aerosol,radiosonde and ERA5 meteorological data,three severe haze pollution weather processes in Jinan area at the end of 2020 are analyzed.The results show that:The variation trend of AQI in the three haze pollution processes at the end of 2020 was basically consistent with PM_(2.5),PM_(10) and NO_(2),indicating that PM and NO_(2) are the main pollutants causing haze pollution weather in Winter in Jinan,while CO,SO_(2) and O_(3) were not the main pollutants causing haze pollution weather in Jinan,among which PM and O_(3) show an obvious off-peak trend.1000 hPa wind field features:Process A:Before and after December 8,Jinan area was affected by high pressure anticyclone,with weak wind and mainly sunny weather,which was not conducive to the settlement and diffusion of pollutants.On December 11,it was affected by cold air from northwest,and the haze process ended.Process B:Around December 26,Jinan area was affected by the warm and humid air flow from the southeast,which reached the strongest on December 27 and then weakened,weakening the brief haze pollution process.In process C,jinan area was affected by the warm and humid air flow from the southeast around January 20th,and began to weaken on January 23rd,making AQI decline.Then,it was affected by the northeast wind on January 27th,and the 8-d haze pollution weather came to an end.The inversion layer appeared in several haze pollution processes in Jinan area,and both ground-to-ground inversion and off-ground inversion affected the formation of haze.
作者
孙伟佳
郭海涛
陈庆亮
张玉洁
马传成
李恒昶
SUN Weijia(Atmospheric Sounding Technology Support Center,Shandong Meteorological Administration,Jinan,Shandong 250031)
出处
《农业灾害研究》
2022年第7期60-62,共3页
Journal of Agricultural Catastrophology
关键词
气溶胶
逆温
霾
Aerosol
Inversion
Haze
作者简介
孙伟佳(1995—),女,山东青岛人,助理工程师,主要从事气象专用设备保障工作;通信作者:郭海涛(1979—),男,辽宁锦州人,主要从事气象专用设备保障工作,E-mail:17424104@qq.com。
