| 摘要: |
| 为提高岳阳市空气质量预报的准确度，为大气污染防治提供技术支撑和决策参考，本文利用2015～2016年岳阳市区空气质量AQI数据和同期的常规气象资料，采用统计分析方法对该市的AQI时空分布特征进行了分析，采用综合指标法和逐步回归法建立岳阳市区AQI预报模型。结果表明：岳阳市区冬季空气质量最差，夏季空气质量最好，城市北部空气质量差于南部、工业区空气质量差于水库景区。重度污染及严重污染日基本出现在空气质量较差的冬季，工业区发生频率比较高。岳阳市城市工业布局方向与年主导风向一致，使得市区广大区域处于工业气流的下游，导致空气污染加剧。选取气温、降水量、低云量、相对湿度、风速等因子建立的岳阳市区AQI预报模型模拟效果较好。 |
| 关键词: 空气质量;AQI指数;气象因素;相关分析 |
| DOI： |
| 投稿时间：2017-10-19修订日期：2017-12-22 |
| 基金项目: |
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| The Relationship between Conventional Meteorological Condition and the Characteristic of Yueyang City`s AQI Index |
| chenjiaorong |
| (Yueyang Meteorological Bureau of Hunan Province) |
| Abstract: |
| To improve the accuracy of Yueyang’s air quality forecast, to provide technical support and reference for decision making of air pollution prevention. By using the AQI and conventional meteorological data of Yueyang city from 2015 to2016, we loaded a statistical analysis with Yueyang`s AQI time—space distribution features and establish the AQI forecast model by comprehensive indexes method and stepwise regression method. The result indicates that: for the air quality of Yueyang, winter is the worst, and summer is the best, the north is worse than the south, the industrial park is worse than the lake region. Heavy pollution and severe pollution days usually appear in winter, especially the industrial park. The direction of the industrial layout in Yueyang City is consistent with the predominant wind direction of the year, which made the city area located in the downstream of the industrial gas flow and intensify the air pollution. We could get a better result by using temperature, amount of precipitation, low cloud cover, relative humidity and wind speed to establish the AQI forecast model of Yueyang. |
| Key words: air quality；AQI；meteorological factors；correlation analysis |
