违反了 PRIMARY KEY 约束 'PK_t_counter'。不能在对象 'dbo.t_counter' 中插入重复键。 语句已终止。 一次重雾霾天气成因及湿清除特征分析<sub>*</sub>-Characteristic Analysis of a Muti-day Pollution Event and Wet Removal of Aerosols
doi:  10.3878/j.issn.1006-9585.2017.16187
一次重雾霾天气成因及湿清除特征分析*

Characteristic Analysis of a Muti-day Pollution Event and Wet Removal of Aerosols
摘要点击 272  全文点击 105  投稿时间:2016-10-13  修订日期:2017-01-11
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基金:  国家重点研发计划(2016YFA0601704、2016YFC0203304),湖北省气象局科技发展基金(2016Y02,2016Q10)
中文关键词:  雾霾天气,稳定层结,长距离输送,清除率,碰并系数
英文关键词:  Fog and haze  Stable atmospheric stratification  Remote transport  Washout rate  Average scavenging coefficient E
              
作者中文名作者英文名单位
唐仁茂Tang Renmao武汉市气象局
李德俊Li Dejun湖北省气象服务中心
柳草武汉中心气象台;武汉中心气象台
熊洁湖北省气象服务中心
江鸿武汉市气象局
引用:唐仁茂,李德俊,柳草,熊洁,江鸿.2017.一次重雾霾天气成因及湿清除特征分析*[J].气候与环境研究
Citation:Tang Renmao,Li Dejun.2017.Characteristic Analysis of a Muti-day Pollution Event and Wet Removal of Aerosols[J].Climatic and Environmental Research(in Chinese)
中文摘要:
      为了深入了解发生在武汉地区一次重雾霾天气过程的气象条件、污染源和污染物的湿清除特征,本文利用空气质量监测资料、地面观测资料和遥感火点监测资料和实测雨滴谱资料,详细分析了这次过程。结果表明:此次持续10天的重雾霾天气过程发生在高压天气系统和静风条件下,辐射降温形成的稳定逆温边界层结构有利于污染气溶胶的积累和雾霾的形成和发展, 尤其是来自南方持续不断的湿平流使雾霾天气得以长时间持续和发展,整个雾霾天气期间能见度均小于2 km, 最低能见度不足50 m。23日至24日降水过程对此类污染物出现明显的清除效果,清除率最高的是PM颗粒污染物,NO2、SO2和CO次之,最差的是O3,通过与Scott(1982)按平均碰并系数E(E=0.65)得到的清除率和雨强的关系比较,武汉地区稳定性降水对气溶胶的平均碰并系数可取0.25-0.35。
Abstract:
      Based on the air pollution index, conventional pollution observations, surface meteorological observations and satellite remote sensing data, the relationships of air pollution, large-scale circumfluence and boundary layer meteorology of this event were comprehensively analyzed. Additionally, characteristic of wet removal during precipitation event were investigated by Laser Precipitation Monitor data. The results showed:: (1) Stable atmospheric stratification and slight wind caused by steady uniform high-pressure field contributed to the occurrence , development, maintainability and reinforcement of the pollution event. The remote transport of pollutants had a significant impact on ambient air quality of Wuhan Area. (2) Wet removal aerosols appeared during the precipitation event, for example, the washout rate of particle pollutants was the highest, following by NO2, SO2 and CO, the worst is O3. By compare the parameterization of the washout rate with the average scavenging coefficient E between of SCOTT and of Wuhan, the E of Wuhan Area was 0.25 to 0.35.
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