[1]谭斐,丘平珠,俸玉端.桂林市大气气溶胶质量浓度变化特征分析[J].气象研究与应用,2019,40(04):81-85.
 Tan Fei,QiuPingzhu,Feng Yuduan.Variation characteristics of atmospheric aerosol mass concentration in Guilin[J].Journal of Meteorological Research and Application,2019,40(04):81-85.
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桂林市大气气溶胶质量浓度变化特征分析()
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气象研究与应用[ISSN:1673-8411/CN:45-1356/P]

卷:
第40卷
期数:
2019年04期
页码:
81-85
栏目:
大气监测与装备技术
出版日期:
2019-12-30

文章信息/Info

Title:
Variation characteristics of atmospheric aerosol mass concentration in Guilin
作者:
谭斐 丘平珠 俸玉端
广西区气象信息中心, 南宁 530022
Author(s):
Tan Fei QiuPingzhu Feng Yuduan
Guangxi Meteorological Information Center, Nanning Guangxi 530022
关键词:
桂林大气成分气溶胶质量浓度
Keywords:
Guilinatmospheric compositionaerosolmass concentration
分类号:
P49
摘要:
利用2009-2018年桂林大气成分站的大气气溶胶质量浓度观测资料,分析了PM10、PM2.5、PM1统计值的变化规律,结果表明:(1)2009-2018年桂林ρ(PM10)、ρ(PM2.5)、ρ(PM1)年平均值变化趋势基本相同,2012-2014年,年平均值相对较高,自2015年后有下降的趋势。一年中月变化基本呈冬高夏低的正V字型分布,月平均峰值出现在1月,谷值出现在7月。质量浓度小时平均值从数值上呈现出冬 > 春 > 秋 > 夏的趋势,并呈现明显的双峰分布特征。ρ(PM2.5)/ρ(PM10)、ρ(PM1)/ρ(PM10)、ρ(PM1)/ρ(PM102.5)介于60%-93%之间,说明全年可吸入颗粒物中细粒子占大多数。桂林大气气溶胶质量浓度月平均分布规律可能与天气气候特点有密切关系,日变化主要受到气象条件和污染物排放的影响。(2)桂林ρ(PM10)、ρ(PM2.5)和ρ(PM1)与日均气温、日均湿度、日降水量、日均风速显著负相关,与日均气压显著正相关。中雨及大雨、暴雨可明显稀释污染物的浓度,细颗粒物易被雨水冲刷清除。2级以上的风力对于污染物有一定的驱散作用,尤其粗颗粒物下降的程度较明显。
Abstract:
Based on the observation data of aerosol mass concentration in Guilin atmospheric composition station from 2009 to 2018, the variation rules of PM10, PM2.5 and PM1 statistical values were analyzed. The results showed that:(1) from 2009 to 2018, the annual average values of ρ(PM10), ρ(PM2.5) and ρ(PM1) in Guilin had basically the same trend. From 2012 to 2014, the annual average values were relatively high, and there was a downward trend since 2015. The monthly variation basically showed a positive V-shaped distribution of high in winter and low in summer. The monthly average peak value appeared in January, and the valley value appeared in July. The hourly mean value of mass concentration showed the trend of winter > spring > autumn > summer, and showed obvious double peak distribution characteristics. ρ(PM2.5)/ρ(PM10), ρ(PM1)/ρ(PM10), and ρ(PM1)/ρ(PM102.5) were between 60%-93%, indicating that fine particles accounted for the majority of the annual inhalable particles. The monthly average distribution of aerosol mass concentration in Guilin could be closely related to the weather and climate characteristics, and the daily variation was mainly affected by meteorological conditions and pollutant emissions. (2) In Guilin, ρ(PM10), ρ(PM2.5) and ρ(PM1) were negatively correlated with daily average temperature, daily average humidity, daily average precipitation and daily average wind speed, and positively correlated with daily average pressure. Moderate rain, heavy rain and rainstorm could obviously dilute the concentration of pollutants, and fine particles were easy to be washed away by rain. The wind above level 2 can disperse the pollutants, especially the coarse particles.

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备注/Memo

备注/Memo:
收稿日期:2018-12-23。
基金项目:气象信息化实践中业务集约化和数据标准化研究([2017]第M05号)
作者简介:谭斐(1984-),女,工程师,主要从事气象观测数据质量控制相关工作。E-mail:20953423@qq.com
更新日期/Last Update: 1900-01-01