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。 山西夏季气溶胶散射特征的飞机观测研究-Aircraft Measurements of the Scattering Properties ofAerosols in Shanxi Province in summer
山西夏季气溶胶散射特征的飞机观测研究

Aircraft Measurements of the Scattering Properties ofAerosols in Shanxi Province in summer
摘要点击 102  全文点击 51  投稿时间:2018-01-30  修订日期:2018-03-22
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基金:  
中文关键词:  气溶胶 散射特性 飞机观测 山西
英文关键词:  aerosols, scattering  properties, aircraft measurements, Shanxi
                    
作者中文名作者英文名单位
封秋娟Feng Qiu-Juan南京信息工程大学
牛生杰山西省人工降雨防雹办公室;南京信息工程大学
李培仁山西省人工降雨防雹办公室
申东东山西省人工降雨防雹办公室
杨俊梅山西省人工降雨防雹办公室
李义宇山西省人工降雨防雹办公室
范秀萍山西省气象信息中心;山西省气象信息中心
引用:封秋娟,牛生杰,李培仁,申东东,杨俊梅,李义宇,范秀萍..山西夏季气溶胶散射特征的飞机观测研究[J].气候与环境研究
Citation:Feng Qiu-Juan..Aircraft Measurements of the Scattering Properties ofAerosols in Shanxi Province in summer[J].Climatic and Environmental Research(in Chinese)
中文摘要:
      利用三个架次的积分浊度仪和PCASP-100X机载观测资料,分析了2013年山西夏季空中有云、无云和少云三种不同条件下气溶胶散射系数的分布特征,讨论了气溶胶散射系数垂直变化与气溶胶数浓度、气象条件的关系,并结合HYSPLIT后向轨迹模型研究气溶胶的运动轨迹和可能的污染来源。结果表明:山西夏季空中气溶胶总散射系数变化范围为0-499Mm-1,晴空气溶胶数浓度和总散射系数明显大于有云和少云时。气溶胶总散射系数一般随高度的增加而递减。造成气溶胶总散射系数、数浓度偏高的原因有下垫面污染源多、风速小、相对湿度高以及逆温层的存在。550nm波段气溶胶后向散射比大于0.1,粒径0.1-0.5μm的气溶胶粒子对散射影响最大,说明山西空中细粒子污染比较严重。气溶胶总散射系数与数浓度有一定的相关性。引起气溶胶总散射系数、数浓度较高的气团传输路径主要为西南路径,局地排放的气溶胶大于远距离传输的气溶胶对散射系数的贡献。
Abstract:
      The aerosol total scattering coefficient and its relation to aerosol number concentration and meteorological conditions under three different conditions with clouds,sunny and cloudless were analyzed by using the integrating nephelometer and PCASP-100X of three flights in Shanxi Province in summer,2013.Movement tracks and possible sources of pollution of aerosols were discussed by using Hysplit model. The results showed that the range of total scattering coefficient varied from 0 to 499Mm-1. Scattering coefficient and number concentration on sunny days were significantly higher than those on cloudy and cloudless days. Aerosol total Aerosol total scattering coefficient decreased with altitude. Due to multiple pollution sources in the underlying surface, small wind speed, high relative humidity and the existence of temperature inversion layer,the total aerosol scattering coefficient and number concentration are high.The ratios of backscattering coefficient of 550nm wavelength was larger than 0.1. The total scattering coefficient was mainly influenced by the aerosol in particle size of 0.1-0.5μm,indicating that a significant fraction of the particular matter in Shanxi was attributed to fine mode particles. It is further found that the air pathways,which caused the high aerosol total scattering coefficient and number concentration are mainly from southwest. Contribution to scattering coefficient,local near-surface sources is greater than long-distance transmission.
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