江西省空氣負(fù)離子濃度特征與氣象因子相關(guān)分析

doi:10.12306/2021jms.0043

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江西省空氣負(fù)離子濃度特征與氣象因子相關(guān)分析
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                        10.12306/2021jms.0043
                    
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中圖分類號(hào):P49
基金項(xiàng)目:國(guó)家重點(diǎn)研發(fā)計(jì)劃項(xiàng)目(2018YFC1506606);中國(guó)氣象局氣候變化專項(xiàng)(CCSF201928)

Correlation analysis of negative air ion concentration and meteorological factors in Jiangxi

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摘要:

利用2019年江西省靖安森林試驗(yàn)基地觀測(cè)資料,分析了靖安森林站空氣負(fù)離子濃度不同時(shí)間尺度的變化特征及其與氣象因子的相關(guān)性,以及不同天氣條件對(duì)其的影響。結(jié)果表明,靖安市年平均空氣負(fù)離子濃度為2 187個(gè)/cm³,其中夏季濃度最高為2 910個(gè)/cm³,秋季最低為1 756個(gè)/cm³。此外,濃度日變化特征也存在明顯的季節(jié)差異性,其中春夏秋冬四季峰值分別出現(xiàn)在10時(shí)(北京時(shí),下同)、06時(shí)、09時(shí)、13時(shí)左右。日尺度上濃度與氣溫、降水、相對(duì)濕度均呈顯著的正相關(guān),月尺度上其與降水呈顯著正相關(guān)。雨天的濃度高于晴天,四個(gè)季節(jié)雨天峰值分別出現(xiàn)在開始降水的7~9 h、7~15 h、9 h、9~11 h后。當(dāng)降水量在0~10 mm時(shí),降水對(duì)空氣負(fù)離子濃度沒有明顯作用,隨后濃度隨降水量增加而上升,當(dāng)出現(xiàn)暴雨天氣的時(shí)候,濃度反而呈現(xiàn)下降趨勢(shì)。

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Using the observational data of Jing'an Forest Experimental Base in 2019, the characteristics of negative air ion concentration variation at different time scales were analyzed in this paper. Besides, the correlation between the concentration and meteorological factors, as well as the influence of different weather conditions on it were also provided. The results showed that the annual average concentration of negative air ions in Jing'an was 2 187個(gè)/cm³, of which the highest concentration was 2 910個(gè)/cm³ in summer, and the lowest was 1 756個(gè)/cm³ in autumn. In addition, seasonal differences of concentrations can be seen in the characteristics of diurnal variation, with the peak of spring, summer, autumn and winter appeared at around 10:00 BST, 06:00 BST, 09:00 BST and 13:00 BST, respectively. On the daily scale, significant positive correlation can be seen between the negative air ion concentration and the temperature, precipitation and relative humidity, while on the monthly scale, the concentration is only significantly positively correlated with the precipitation. The concentration of negative air ions in rainy days was higher than that in sunny days. The peak concentrations in spring, summer, autumn and winter appeared at 7-9 h, 7-15 h, 9 h and 9-11 h after the onset of rainfall, respectively. When the precipitation was 0-10 mm, it had no obvious effect on the concentration of negative air ions, and then the concentration of negative air ions increased with the gradual increase of precipitation. The concentration of negative air ions showed a downward trend during rainstorm.

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方硯秋,張方敏,陳龍,李柏貞,王懷清.江西省空氣負(fù)離子濃度特征與氣象因子相關(guān)分析.氣象科學(xué),2022,42(2):254-260 FANG Yanqiu, ZHANG Fangmin, CHEN Long, LI Bozhen, WANG Huaiqing. Correlation analysis of negative air ion concentration and meteorological factors in Jiangxi. Journal of the Meteorological Sciences,2022,42(2):254-260

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收稿日期:2021-01-30
最后修改日期:2021-04-28
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在線發(fā)布日期: 2022-05-31
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