| 北京南郊观象台2008—2018年PM10质量浓度特征及其与主要气象因子的关系 |
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| 引用本文： | 于丽萍,张晓春,孟磊,等..北京南郊观象台2008—2018年PM10质量浓度特征及其与主要气象因子的关系[J].气象与环境科学,2022,45(1):73-80. |
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| 作者姓名： | 于丽萍 张晓春 孟磊 等. |
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| 作者单位： | 北京市气象探测中心（北京市观象台）;中国气象局气象探测中心;北京丰台区气象局;青海瓦里关区域大气本底站 |
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| 基金项目： | 国家重点研发计划(2016YFA0600303);公益性行业(气象)科研专项(GYHY201206037);中国气象局气象关键技术集成与应用项目(CMAGJ2013Z14);中央级公益性科研院所基金项目(IUMKY201736)。 |
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| 摘 要： | 利用北京市观象台2008年3月2019年2月PM10质量浓度数据,通过均值、偏差、Daniel趋势检验相关分析及显著性检验等统计方法,结合主要气象因子,分析PM10质量浓度变化特征。结果显示:2008-2018年PM10质量浓度年均值总体呈显著下降趋势,但均未达到国家二级限值标准;春季的质量浓度最大,其次为秋、冬季的,夏季的最小;月均值呈“M”形变化特征。PM10质量浓度总体呈周末的高于工作日的周末效应。PM10质量浓度日变化呈早上及夜间的双峰形特征,各季节峰值出现时间略有差异。PM10质量浓度随着风速的增大呈现先上升后下降的变化,在3.4 m·s-1时最高,为269.1μg·m-3。风向为偏东、北或偏南时,PM10质量浓度超过二级限值标准的频次较高。PM10质量浓度与降雪的相关性高于与同等级降水的相关性。
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| 关 键 词： | 北京 PM10 质量浓度 变化特征 影响因子 |
Characteristic of PM10 Mass Concentration and Its Correlation with Major Meteorological Factors at Beijing Nanjiao Observatory During 20082018 |
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| Yu Liping,Zhang Xiaochun,Meng Lei,Li Lin,Wei Tao,Li Dong,Liu Haiyue,Li Delin.Characteristic of PM10 Mass Concentration and Its Correlation with Major Meteorological Factors at Beijing Nanjiao Observatory During 20082018[J].Meteorological and Environmental Sciences,2022,45(1):73-80. |
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| Authors: | Yu Liping Zhang Xiaochun Meng Lei Li Lin Wei Tao Li Dong Liu Haiyue Li Delin |
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| Institution: | (Beijing Meteorological Observation Center, Beijing 100176, China;Meteorological Observation Center, CMA, Beijing 100081, China;Beijing Fengtai District Weather Station, Beijing 100071, China;Qinghai Waliguan Regional Background Atmosphere Station, Qinghai 810012, China) |
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| Abstract: | Using the PM10mass concentration data from Beijing Observatory in March 2008 and February 2019,combined with major meteorological factors,this paper analyzes the characteristics of PM10mass concentration by means of statistical methods such as mean values,deviations,Daniel trend test correlation analysis,and significance test.The results show that the annual mean PM10mass concentration from 2008 to 2018 showed a significant declining trend,and did not meet the national second-level annual limit standard.The seasonal variation of PM10mass concentration is the highest in spring,followed by autumn and winter,and the lowest is in summer.Its monthly mean has an“M”-type variation.The weekend effect of PM10mass concentration is higher than on weekdays.The diurnal variation shows the double peaks in the morning and at night.The seasonal peak times of PM10mass concentration are slightly different.The PM10mass concentration increases along with the increase of wind speed,showing the variation of rising first and then declining.The highest PM10mass concentration is 269.1μg·m-3 at the wind speed of 3.4 m·s-1.The frequency of PM10mass concentration exceeding the second-level limit is higher when it blows easterly,northerly or southerly winds.The correlation between PM10mass concentration and snowfall is higher than the correlation with the same-grade precipitation. |
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| Keywords: | Beijing PM10 mass concentration variation characteristics influence factors |
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