小时气象要素对PM_(2.5)浓度的影响
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摘要
本文基于武汉气象站点和空气质量监测点的小时数据,分析有无降水、风对PM_(2.5)浓度的影响。结果表明:武汉各区PM_(2.5)污染物浓度空间分布不均。中心城区PM_(2.5)污染最严重,新洲区空气质量最好,其余各区PM_(2.5)平均浓度值较接近;PM_(2.5)平均浓度值日变化趋势呈单峰型。降水对PM_(2.5)有清理作用。武汉重污染天气多为输入性污染,输入路径包括偏北路径和偏东路径。
Based on the hourly data of Wuhan meteorological stations and air quality monitoring points, this paper analyzes the effects of precipitation and wind on PM_(2.5) concentration. The results show that the spatial distribution of PM_(2.5) pollutants in various districts of Wuhan is uneven. The PM_(2.5) pollution in the central city is the most serious. The air quality in Xinzhou District is the best. The average concentration of PM_(2.5) in the other districts is close to each other; the daily variation trend of the average concentration value of PM_(2.5) is unimodal. Precipitation has a cleansing effect on PM_(2.5). Most of the heavily polluted weather in Wuhan is imported pollution, and the input path includes the northerly route and the eastward path.
Based on the hourly data of Wuhan meteorological stations and air quality monitoring points, this paper analyzes the effects of precipitation and wind on PM_(2.5) concentration. The results show that the spatial distribution of PM_(2.5) pollutants in various districts of Wuhan is uneven. The PM_(2.5) pollution in the central city is the most serious. The air quality in Xinzhou District is the best. The average concentration of PM_(2.5) in the other districts is close to each other; the daily variation trend of the average concentration value of PM_(2.5) is unimodal. Precipitation has a cleansing effect on PM_(2.5). Most of the heavily polluted weather in Wuhan is imported pollution, and the input path includes the northerly route and the eastward path.
引文
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[2]李芳,董倩,任兆鹏等.鲁西南一次持续空气污染过程的气象条件分析[J].山东气象,2016,36(147):36-41.
[3]段莹,吴战平,张东海等.贵阳市降水对PM2.5污染物湿清除作用[J].气象科技,2016,44(3):458-473.
[4]崔宜少.威海PM2.5浓度与气象要素的相关分析[J].山东气象,2015,35(143):17-22.
[2]李芳,董倩,任兆鹏等.鲁西南一次持续空气污染过程的气象条件分析[J].山东气象,2016,36(147):36-41.
[3]段莹,吴战平,张东海等.贵阳市降水对PM2.5污染物湿清除作用[J].气象科技,2016,44(3):458-473.
[4]崔宜少.威海PM2.5浓度与气象要素的相关分析[J].山东气象,2015,35(143):17-22.