寧波九峰山大氣負氧離子濃度特征及與環(huán)境因素的關系

doi:10.12306/2022jms.0047

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寧波九峰山大氣負氧離子濃度特征及與環(huán)境因素的關系
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                        10.12306/2022jms.0047
                    
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中圖分類號:P49
基金項目:寧波市自然科學基金一般資助項目(2023J235)

Characteristics of air negative oxygen ions and Its relationship with environmental factors in Jiufeng Mountain of Ningbo

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基于2010年1月—2016年6月九峰山負氧離子濃度和氣象資料,統(tǒng)計分析大氣負氧離子濃度特征及主要影響因子,結果表明,九峰山負氧離子濃度年變化呈單峰單谷型特征,負氧離子濃度7—10月較低,其中9月濃度最低(520個/cm³);4—6月較高,其中6月濃度最高為1 227個/cm³;日變化上呈白天濃度低、夜間濃度高的時間分布特征,即07時(北京時,下同)后濃度明顯下降,至12時最低,之后再逐漸上升。4~8級負氧離子濃度占總數(shù)80.2%,四季的占比分別為97.2%、67.1%、75.5%、87.6%,冬季變化幅度較小,夏季最大。負氧離子濃度與風速、日照、PM_2.5濃度等氣象環(huán)境因子呈負相關,與降水呈正相關。中雨及以上量級時的負氧離子濃度上升明顯,其負氧離子濃度均超出1 000個/cm³;雷雨時負氧離子濃度高于輕霧和霾天。

Abstract:

Based on the negative ion concentration and meteorological data from January 2010 to June 2016 in Jiufeng Mountain, the characteristics of atmospheric negative ion concentration and its main influencing factors were statistically analyzed. The results show the annual variation of negative ion concentration in Jiufeng Mountain has a single peak and single valley feature, with lower concentrations from July to October, and the lowest concentration (520 per·cm^-3) in September, with higher concentrations from April to June, and the highest concentration(1 227 per·cm^-3) in June. The daily concentration is low in the day and high at night, with an obvious decrease after 07∶00 BST, the lowest point at 12∶00, and then gradually increasing. The negative ion concentrations of grade 4-8 accounted for 80.2% of the total, with respective proportions of 97.2%, 67.1%, 75.5%, and 87.6% in each season, with minor changes during winter and maximum changes during summer. The negative ion concentration was negatively correlated with wind speed, sunshine duration, and PM_2.5 concentration, positively correlated with precipitation. The negative ion concentration significantly increased with moderate rainfall and above, with a concentration exceeding 1 000 per·cm^-3, and is higher in thunderstorms than in light fog and haze days.

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胡曉,陳磊,史學凡,徐璐.寧波九峰山大氣負氧離子濃度特征及與環(huán)境因素的關系.氣象科學,2025,45(2):191-195 HU Xiao, CHEN Lei, SHI Xuefan, XU Lu. Characteristics of air negative oxygen ions and Its relationship with environmental factors in Jiufeng Mountain of Ningbo. Journal of the Meteorological Sciences,2025,45(2):191-195

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收稿日期:2020-12-30
最后修改日期:2022-06-22
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在線發(fā)布日期: 2025-07-03
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