主办单位:中国气象局沈阳大气环境研究所
国际刊号:ISSN 1673-503X
国内刊号:CN 21-1531/P

气象与环境学报 ›› 2017, Vol. 33 ›› Issue (1): 58-65.doi: 10.3969/j.issn.1673-503X.2017.01.008

• 论文 • 上一篇    下一篇

本溪市大气颗粒物变化特征及其与气象要素的关系

李杨1, 赵胡笳2, 马雁军2, 朱轶明3, 李潇潇4   

  1. 1. 中国气象局气象探测中心, 北京 100081;
    2. 中国气象局沈阳大气环境研究所, 辽宁 沈阳 110166;
    3. 辽宁省人工影响天气办公室, 辽宁 沈阳 110166;
    4. 大连市气象台, 辽宁 大连 116001
  • 收稿日期:2015-12-15 修回日期:2016-06-08 出版日期:2017-02-28 发布日期:2017-02-28
  • 作者简介:李杨,女,1977年生,高级工程师,主要从事大气成分研究,E-mail:liyang@cma.gov.cn。
  • 基金资助:
    辽宁省气象局博士科研业务费专项“东北区域城市和背景区大气气溶胶化学特性及典型城市群气溶胶光学特性研究”(D201501)和国家自然科学基金面上项目(41475124)共同资助。

Variation characteristics of particulate matter and its correlations with meteorological elements over Benxi

LI Yang1, ZHAO Hu-jia2, MA Yan-jun2, ZHU Yi-ming3, LI Xiao-xiao4   

  1. 1. CMA Meteorological Observation Centre, Beijing 100081, China;
    2. Institute of Atmospheric Environment, China Meteorological Administration, Shenyang 110166, China;
    3. Weather Modification Office in Liaoning Province, Shenyang 110166, China;
    4. Dalian Municipal Meteorological Observatory, Dalian 116001, China
  • Received:2015-12-15 Revised:2016-06-08 Online:2017-02-28 Published:2017-02-28

摘要: 利用 2014年本溪市大气颗粒物质量浓度监测资料和风速、气温、相对湿度、气压等常规地面气象要素观测资料,分析了本溪地区大气颗粒物质量浓度的月、季变化特征及其与气象要素的相关性。结果表明:2014年7月和10月本溪市大气颗粒物质量浓度较高,5月和9月大气颗粒物质量浓度较低,6月和11月大气颗粒物质量浓度比值较高。夏季PM10质量浓度较低,平均浓度为115.1 μg·m-3;冬季PM2.5和PM1.0质量浓度较高,平均浓度分别为99.5 μg·m-3和86.1 μg·m-3。春季和冬季平均风速与大气颗粒物质量浓度的相关性最好,夏季和冬季相对湿度与大气颗粒物质量浓度的相关性最好。当ρ(PM2.5)≥200.0 μg·m-3时,ρ(PM2.5)与平均气温呈显著的正相关关系,相关系数为0.5288,ρ(PM2.5)与相对湿度的相关系数也高达0.6981,高温、高湿和小风等气象条件是本溪地区大气颗粒物高质量浓度事件发生的有利气象条件。

关键词: 大气颗粒物, 时间变化, 气象要素, 相关性

Abstract: Data of the particulate matter mass concentrations and surface meteorological elements (i.e.wind speed,air temperature,relative humidity and atmospheric pressure) throughout 2014 in Benxi were used to evaluate the monthly and seasonally variations of particulate matters and their correlations with meteorological elements.The results show that the particulate matter concentrations are relatively high in July and October,while relatively low in May and September.Moreover,the concentration ratios of particulate matters in June and November are high.The concentrations of PM10 are lower with the average value of 115.1 μg·m-3,whereas those of PM2.5 and PM1.0 are higher,with the average values of 99.5 μg·m-3 and 86.1 μg·m-3,respectively.The correlations between particulate matter mass concentrations and wind speeds appear the most significant in spring and winter,and those between particulate matter mass concentrations and relative humidity appear the most significant in summer and winter.The mass concentrations of PM2.5 and average temperatures show significantly positive correlations in case that they are below 200 μg·m-3 with the coefficient of 0.5288,and that of the mass concentrations of PM2.5 and relative humidities are as high as 0.6981.Higher temperature and humidity,as well as lower wind speed,are the active meteorological conditions leading to pollution events with high particulate matter concentrations over Benxi.

Key words: Particulate matter, Temporal variation, Meteorological elements, Correlation

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