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石家庄市空气颗粒物污染与气象条件的关系
引用本文:韩军彩,陈静,钤伟妙,岳阳,高祺.石家庄市空气颗粒物污染与气象条件的关系[J].中国环境监测,2016,32(2):31-37.
作者姓名:韩军彩  陈静  钤伟妙  岳阳  高祺
作者单位:河北省石家庄市气象局, 河北 石家庄 050081,河北省石家庄市气象局, 河北 石家庄 050081,河北省石家庄市气象局, 河北 石家庄 050081,河北省定州市气象局, 河北 定州 071000,河北省石家庄市气象局, 河北 石家庄 050081
基金项目:河北省气象局科研开发项目(14ky22)
摘    要:利用2013—2014年石家庄市环境监测中心PM_(2.5)、PM_(10)逐时监测资料、同期的石家庄市地面气象观测站常规观测资料以及环境监测梯度站2013年1月各层PM_(2.5)和PM_(10)逐时观测资料,分析了PM_(2.5)、PM_(10)质量浓度的时空分布特征及与气象要素的相关关系。结果表明:石家庄市PM_(2.5)与PM_(10)的质量浓度及两者的比值均为冬季和秋季较高;在水平分布上,PM_(2.5)与PM_(10)的平均质量浓度为市区西部高于东部;在垂直分布上,随着高度的增加,PM_(2.5)和PM_(10)平均质量浓度先上升后下降;PM_(2.5)与PM_(10)的质量浓度与相对湿度呈正相关,其中PM_(2.5)的质量浓度与相对湿度相关性更高;PM_(2.5)与PM_(10)的质量浓度与风速呈负相关,随着风速的增大,PM_(2.5)与PM_(10)的平均质量浓度呈下降的趋势,但当风速大于5 m/s时,PM_(10)的质量浓度随着风速增大而上升,出现扬尘污染,总体来讲,刮西北风时PM_(2.5)与PM_(10)的质量浓度较高,刮东南风时PM_(2.5)与PM_(10)的质量浓度较低,这与风向和风速的日变化有关;PM_(2.5)与PM_(10)的质量浓度与降水呈负相关,随着降水的增加,PM_(2.5)与PM_(10)的平均质量浓度呈下降的趋势。

关 键 词:颗粒物  时空分布  气象要素  相关关系
收稿时间:2015/4/20 0:00:00
修稿时间:2015/6/17 0:00:00

The Research on Relationship between Meteorological Condition and Atmospheric Particles in Shijiazhuang
HAN Juncai,CHEN Jing,QIAN Weimiao,YUE Yang and GAO Qi.The Research on Relationship between Meteorological Condition and Atmospheric Particles in Shijiazhuang[J].Environmental Monitoring in China,2016,32(2):31-37.
Authors:HAN Juncai  CHEN Jing  QIAN Weimiao  YUE Yang and GAO Qi
Institution:Shijiazhuang Meteorological Bureau, Shijiazhuang 050081, China,Shijiazhuang Meteorological Bureau, Shijiazhuang 050081, China,Shijiazhuang Meteorological Bureau, Shijiazhuang 050081, China,Dingzhou Meteorological Bureau, Dingzhou 071000, China and Shijiazhuang Meteorological Bureau, Shijiazhuang 050081, China
Abstract:The temporal and spatial distribution of PM2.5 and PM10 concentrations and the relationship between the two atmospheric particles and meteorological condition are analyzed using multiple observations. The data comprises hourly concentrations of PM2.5 and PM10 from Shijiazhang Enviromental Monitoring Center and hourly ground meteorological data offered by Shijiazhuang Weather Station in the periods of 2013-2014. Besides, the vertical concentrations observed hourly by the Enviromental Monitoring Gradient Station in January 2013 are used. The results indicate:the concentrations of PM2.5 and PM10 and the PM2.5 to PM10 ratio are higher in winter and autumn. On the horizontal pattern, the PM2.5 and PM10 concentrations are higher in the western part of city than in the eastern part. On the vertical pattern, the average concentrations of PM2.5 and PM10 rise at first and decrease latter with the height increment. The PM2.5 and PM10 concentrations are on positive proportion to relative humidity, the correlation coefficient of PM2.5 and relative humidity is higher than PM10. The PM2.5 and PM10 concentrations are inversely related to wind speed. Generally, as the wind speed increasing, the mass concentrations of PM2.5 and PM10 go down. However, when the hourly wind speed is greater than 5 m/s, the PM10 mass concentration dose not decrease but increase, then dust pollution occurs. The annual average concentrations of PM2.5 and PM10 are higher when the wind direction is northwest, while they are lower as the wind direction is southeast. It correlates with the diurnal variation of wind direction and wind speed. The PM2.5 and PM10 concentrations are inversely related to precipitation. Generally, as the precipitation increasing, the mass concentrations of PM2.5 and PM10 go down.
Keywords:particles  temporal and spatial distribution  meteorological factors  correlation coefficient
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