| 高温干旱天气下长株潭地区PM_(2.5)的变化规律研究 |
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| 引用本文： | 周湘婷,蒋敏,罗岳平,田耘,甘杰,彭庆庆.高温干旱天气下长株潭地区PM_(2.5)的变化规律研究[J].四川环境,2014(4):42-46. |
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| 作者姓名： | 周湘婷 蒋敏 罗岳平 田耘 甘杰 彭庆庆 |
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| 作者单位： | 湖南省环境监测中心站;国家环境保护重金属污染监测重点实验室; |
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| 基金项目： | 湖南省社科基金重大招标项目:湖南省加强大气污染治理的思路与对策研究(14DA12) |
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| 摘 要： | 以湖南省长株潭地区24个环境空气质量监测国控点数据为基础,对2013年6月~8月持续高温干旱天气条件下,长株潭地区城市PM2.5浓度的日、月变化规律,以及点位差异性分布等进行分析。结果表明,进入夏季持续高温干旱天气后,PM2.5质量浓度较冬季显著下降。受人为活动影响,位于商业区的监测站点的PM2.5较其他站点高;不同城市PM2.5的日变化规律基本一致,呈双峰型;夏季PM2.5上午出现最高值的时间比冬季提前1 h左右,商业区站点的PM2.5最高值出现的时间较其他类型站点早1~2 h。非工作日PM2.5的峰值出现在夜间和凌晨,而工作日则出现在上午9~11点。
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| 关 键 词： | PM2.5 长株潭地区 变化规律 持续高温干旱天气 |
Study on the Variation of PM2.5 in Hot and Droughty Weather of Chang-Zhu-Tan Area |
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| Institution: | ZHOU Xiang-ting, JIANG Min, LUO Yue-ping, TIAN Yun, GAN Jie, PENG Qing-qing (1. Hunan Province Environmental Monitoring Center, Changsha , Hunan 410019, China; 2. State Environmental Protection Key Laboratory of Monitoring for Heavy Metal Pollution, Changsha, Hunan 410019, China) |
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| Abstract: | Based on the automatic data from 24 state-controlled ambient air quality monitoring sites in Chang-Zhu-Tan area of Hunan Province, this paper analyzed daily and monthly variation of PM2.5 concentration, and the variation in different sites distribution of urban Chang-Zhu-Tan from June to August in 2013. The results showed that the value of PM2.5 decreased significantly in sustained hot and droughty weather in summer than that in winter. Influenced by human activity, the value of PM2.5 of commercial sites was higher than that of other sites. The daily variation of the maximum value of PM2.5 was relatively consistent with that in different cities, which was double-peak type. The maximum value of PM/.5 in summer morning was about 1 h earlier comparing with that in winter. In addition, the maximum value of PM2.5 in commercial sites was i h - 2 h earlier than that in other sites. In non-work days, the maximum value of PM2.5 had reached at midnight or wee hours, while at 9am - 11am in working days. |
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| Keywords: | PM2 5 Chang-Zhu-Tan areas variation perpetually hot and droughty weather |
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