浙江省空气负离子浓度分布特征
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浙江省气象科技计划项目(2017ZD13)、浙江省政府投资项目(ZJQX2017166)、中国气象局小型建设项目(ZJDL20180703)资助


Concentration Distribution Characteristics of Negative Oxygen Ions over Zhejiang Province
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    摘要:

    利用2016年浙江省53个站的负氧离子监测结果,制定了负氧离子数据质量控制方法,从年均值、最大值、日最大最小值、各等级浓度占比、清新度等多个指标评价了负氧离子资源,全面分析了全省负氧离子时空分布特征及地区差异。结果表明:浙南和浙西山区空气负氧离子含量高、浙北平原含量相对较低。浙江省负氧离子浓度具有明显日、月变化特征,午后(13:00—16:00)浓度低,夜间和早晨(22:00—07:00)浓度高;4—9月浓度高,冬季浓度低,高山林区站的月变化最显著。高山林区负氧离子浓度基本保持在“清新”级别;浅山景区站“清新”、“一般”、“不清新”级别各约1/3;平原公园站的“不清新”级别占到一半。高山林区的“清新”空气日平均小时数多在20 h以上,“非常清新”空气也多在16 h以上。在浅山和平原地区的风景区、林区、水体型公园等,“清新”空气时间也在10 h以上。

    Abstract:

    Using the negative oxygen ion data of 53 stations over Zhejiang Province in 2016, a data quality control method for negative oxygen ions is developed. Then negative oxygen ion resources are evaluated from several indexes, including annual mean and maximum values, daily maximum and minimum values, the proportion of concentration in each grade, and fresh degree, the spatial and temporal distribution characteristics and regional differences of negative oxygen ions in the province are analyzed comprehensively. The results show that the content of negative oxygen ions is higher in southern and western mountains of Zhejiang, and that in the northern plain is lower relatively. The concentration of negative oxygen ions has obvious daily and monthly variation characteristics in Zhejiang Province:the concentration is low in the afternoon (13:00 to 16:00) and high in the evening and morning (22:00 to 07:00). The concentration is high from April to September, and low in winter. The monthly change in mountain and forest stations are the most remarkable. The concentration of negative oxygen ions in mountain and forest regions is kept at the fresh level basically. The levels of fresh, general, not fresh is about onethird each over the shallow hill regions. The not clean level is account for half in plain and scenic regions. The average number of fresh air hours in mountain and forest areas is more than 20 per day; very fresh air is also more than 16 hours. In scenic spots, forest areas, water parks of shallow hills and plains, the fresh air is also over 10 hours per day.

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姚益平,郁珍艳,李正泉,王阔,樊高峰,毛裕定.浙江省空气负离子浓度分布特征[J].气象科技,2019,47(6):1006~1013

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历史
  • 收稿日期:2018-12-14
  • 定稿日期:2019-04-29
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  • 在线发布日期: 2019-12-16
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